add diagonal infinite scrolling card mosaic background

Reviewed-on: #13

.claude/settings.local.json

@@ -0,0 +1,15 @@
+{
+  "permissions": {
+    "allow": [
+      "mcp__supabase__apply_migration",
+      "mcp__supabase__list_tables",
+      "mcp__supabase__execute_sql",
+      "Bash(npm run build:*)",
+      "mcp__supabase__get_advisors"
+    ]
+  },
+  "enableAllProjectMcpServers": true,
+  "enabledMcpjsonServers": [
+    "supabase"
+  ]
+}

.dockerignore

@@ -0,0 +1,21 @@
+node_modules
+dist
+.git
+.gitignore
+.env
+.env.*
+!.env.example
+*.md
+!DOCKER.md
+.vscode
+.idea
+*.log
+npm-debug.log*
+.DS_Store
+Thumbs.db
+coverage
+.nyc_output
+*.test.ts
+*.test.tsx
+*.spec.ts
+*.spec.tsx

.env.example

@@ -0,0 +1,98 @@
+# =====================================================
+# DECKERR DOCKER CONFIGURATION
+# =====================================================
+# Copy this file to .env and configure your settings
+#
+# Two deployment modes available:
+#   1. External Supabase: Use docker-compose.yml (simpler)
+#   2. Self-hosted Supabase: Use docker-compose.selfhosted.yml (full stack)
+# =====================================================
+
+# =====================================================
+# MODE 1: EXTERNAL SUPABASE (docker-compose.yml)
+# =====================================================
+# Use this if you have:
+# - A Supabase cloud account (supabase.com)
+# - A separately self-hosted Supabase instance
+# - Access to a paid hosted Supabase service
+
+# Your Supabase project URL
+VITE_SUPABASE_URL=https://your-project.supabase.co
+
+# Your Supabase anonymous/public key
+VITE_SUPABASE_ANON_KEY=your-anon-key-here
+
+# Port to run Deckerr on (default: 3000)
+PORT=3000
+
+
+# =====================================================
+# MODE 2: SELF-HOSTED SUPABASE (docker-compose.selfhosted.yml)
+# =====================================================
+# Use this to run everything locally, including Supabase
+
+# --- Site Configuration ---
+# Your domain or IP address (used for redirects)
+SITE_URL=http://localhost:3000
+
+# External API URL (Kong gateway)
+API_EXTERNAL_URL=http://localhost:8000
+
+# --- Port Configuration ---
+DECKERR_PORT=3000
+KONG_HTTP_PORT=8000
+KONG_HTTPS_PORT=8443
+POSTGRES_PORT=5432
+
+# --- Security Keys ---
+# IMPORTANT: Generate secure random values for production!
+# You can use: openssl rand -base64 32
+
+# PostgreSQL password
+POSTGRES_PASSWORD=your-super-secret-postgres-password
+
+# JWT Secret (must be at least 32 characters)
+# Generate with: openssl rand -base64 32
+JWT_SECRET=your-super-secret-jwt-token-with-at-least-32-characters
+
+# JWT Expiry in seconds (default: 3600 = 1 hour)
+JWT_EXPIRY=3600
+
+# Supabase Anonymous Key
+# Generate at: https://supabase.com/docs/guides/self-hosting#api-keys
+# Or use: npx @supabase/cli@latest gen key --type anon --jwt-secret "YOUR_JWT_SECRET"
+ANON_KEY=your-anon-key
+
+# Supabase Service Role Key (admin access)
+# Generate at: https://supabase.com/docs/guides/self-hosting#api-keys
+# Or use: npx @supabase/cli@latest gen key --type service_role --jwt-secret "YOUR_JWT_SECRET"
+SERVICE_ROLE_KEY=your-service-role-key
+
+# --- Email Configuration (Optional) ---
+# Required for email verification and password reset
+SMTP_HOST=smtp.example.com
+SMTP_PORT=587
+SMTP_USER=your-email@example.com
+SMTP_PASS=your-email-password
+SMTP_ADMIN_EMAIL=admin@example.com
+SMTP_SENDER_NAME=Deckerr
+
+# Enable email auto-confirm (set to true to skip email verification)
+ENABLE_EMAIL_AUTOCONFIRM=true
+
+# --- Feature Flags ---
+# Disable new user signups
+DISABLE_SIGNUP=false
+
+# Enable email signup
+ENABLE_EMAIL_SIGNUP=true
+
+# Enable anonymous users
+ENABLE_ANONYMOUS_USERS=false
+
+# --- Advanced ---
+# Additional redirect URLs (comma-separated)
+ADDITIONAL_REDIRECT_URLS=
+
+# PostgREST schemas
+PGRST_DB_SCHEMAS=public,graphql_public

.mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "supabase": {
+      "type": "http",
+      "url": "https://mcp.supabase.com/mcp?project_ref=yedghjrpyxhxesnbtbip"
+    }
+  }
+}

DOCKER.md

@@ -0,0 +1,191 @@
+# Deckerr Docker Deployment
+
+Self-host Deckerr with two deployment options:
+
+## Deployment Options
+
+| Option | Use Case | Complexity |
+|--------|----------|------------|
+| **External Supabase** | Use hosted Supabase (cloud or paid) | Simple |
+| **Self-hosted Supabase** | Run everything locally | Advanced |
+
+---
+
+## Option 1: External Supabase (Recommended)
+
+Use your own Supabase instance (cloud, paid hosted, or separately self-hosted).
+
+### Quick Start
+
+```bash
+# 1. Copy environment template
+cp .env.example .env
+
+# 2. Edit .env with your Supabase credentials
+VITE_SUPABASE_URL=https://your-project.supabase.co
+VITE_SUPABASE_ANON_KEY=your-anon-key
+PORT=3000
+
+# 3. Run database migrations on your Supabase
+# Go to Supabase Dashboard > SQL Editor and run:
+# Contents of supabase/migrations/20250131132458_black_frost.sql
+
+# 4. Start Deckerr
+docker-compose up -d
+
+# 5. Access at http://localhost:3000
+```
+
+### Using Hosted Supabase (Paid Service)
+
+Contact the Deckerr team for access credentials to use the hosted backend.
+
+---
+
+## Option 2: Self-Hosted Supabase (Full Stack)
+
+Run Deckerr with a complete self-hosted Supabase stack.
+
+### Prerequisites
+
+- Docker & Docker Compose
+- 2GB+ RAM
+- Ports: 3000, 5432, 8000
+
+### Quick Start
+
+```bash
+# 1. Copy environment template
+cp .env.example .env
+
+# 2. Generate secure keys
+# JWT Secret (required)
+openssl rand -base64 32
+
+# Generate Supabase API keys
+# Option A: Use online generator at https://supabase.com/docs/guides/self-hosting#api-keys
+# Option B: Use Supabase CLI
+npx @supabase/cli@latest gen key --type anon --jwt-secret "YOUR_JWT_SECRET"
+npx @supabase/cli@latest gen key --type service_role --jwt-secret "YOUR_JWT_SECRET"
+
+# 3. Update .env with your generated values
+POSTGRES_PASSWORD=<generated-password>
+JWT_SECRET=<generated-jwt-secret>
+ANON_KEY=<generated-anon-key>
+SERVICE_ROLE_KEY=<generated-service-key>
+
+# 4. Start all services
+docker-compose -f docker-compose.selfhosted.yml up -d
+
+# 5. Access Deckerr at http://localhost:3000
+# API available at http://localhost:8000
+```
+
+### Generate Keys Script
+
+```bash
+#!/bin/bash
+JWT_SECRET=$(openssl rand -base64 32)
+echo "JWT_SECRET=$JWT_SECRET"
+echo ""
+echo "Now generate API keys at:"
+echo "https://supabase.com/docs/guides/self-hosting#api-keys"
+echo "Use this JWT secret: $JWT_SECRET"
+```
+
+### Self-Hosted Services
+
+| Service | Port | Description |
+|---------|------|-------------|
+| Deckerr | 3000 | Frontend app |
+| Kong | 8000 | API Gateway |
+| PostgreSQL | 5432 | Database |
+| Auth | 9999 | Authentication (internal) |
+| REST | 3000 | PostgREST API (internal) |
+| Realtime | 4000 | WebSocket (internal) |
+
+---
+
+## Environment Variables
+
+### External Supabase Mode
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `VITE_SUPABASE_URL` | Yes | Supabase project URL |
+| `VITE_SUPABASE_ANON_KEY` | Yes | Supabase anonymous key |
+| `PORT` | No | App port (default: 3000) |
+
+### Self-Hosted Mode
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `POSTGRES_PASSWORD` | Yes | PostgreSQL password |
+| `JWT_SECRET` | Yes | JWT signing secret (32+ chars) |
+| `ANON_KEY` | Yes | Supabase anonymous key |
+| `SERVICE_ROLE_KEY` | Yes | Supabase service role key |
+| `SITE_URL` | No | Your domain (default: localhost) |
+| `SMTP_*` | No | Email configuration |
+
+---
+
+## Commands
+
+```bash
+# Start (external Supabase)
+docker-compose up -d
+
+# Start (self-hosted)
+docker-compose -f docker-compose.selfhosted.yml up -d
+
+# Stop
+docker-compose down
+
+# View logs
+docker-compose logs -f
+
+# Rebuild after code changes
+docker-compose build --no-cache
+docker-compose up -d
+
+# Reset database (self-hosted only)
+docker-compose -f docker-compose.selfhosted.yml down -v
+docker-compose -f docker-compose.selfhosted.yml up -d
+```
+
+---
+
+## Production Checklist
+
+- [ ] Use strong passwords (generate with `openssl rand -base64 32`)
+- [ ] Configure HTTPS with reverse proxy (nginx, Traefik, Caddy)
+- [ ] Set up email (SMTP) for password reset
+- [ ] Configure firewall rules
+- [ ] Set up backups for PostgreSQL volume
+- [ ] Consider rate limiting at reverse proxy level
+
+---
+
+## Troubleshooting
+
+### Container won't start
+```bash
+docker-compose logs <service-name>
+```
+
+### Database connection issues
+```bash
+# Check if database is healthy
+docker-compose exec db pg_isready -U postgres
+```
+
+### Reset everything
+```bash
+docker-compose down -v
+docker-compose up -d --build
+```
+
+### Check service health
+```bash
+docker-compose ps
+```

Dockerfile

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+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build arguments for Supabase configuration
+ARG VITE_SUPABASE_URL
+ARG VITE_SUPABASE_ANON_KEY
+
+# Set environment variables for build
+ENV VITE_SUPABASE_URL=$VITE_SUPABASE_URL
+ENV VITE_SUPABASE_ANON_KEY=$VITE_SUPABASE_ANON_KEY
+
+# Build the application
+RUN npm run build
+
+# Production stage
+FROM nginx:alpine
+
+# Copy custom nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Copy built assets from builder
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+# Expose port 80
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]

PROJECT_STRUCTURE.md

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+# Deckerr
+
+A modern Magic: The Gathering deck builder and collection manager built with React, TypeScript, and Supabase.
+
+## Overview
+
+Deckerr is a web application that allows Magic: The Gathering players to build and manage their decks, track their card collections, search for cards, and use a life counter during games. The application provides a clean, animated interface with user authentication and persistent storage.
+
+## Features
+
+- **Deck Management**: Create, edit, and organize your Magic: The Gathering decks
+- **Collection Tracking**: Keep track of your card collection with quantity management
+- **Card Search**: Search and browse Magic cards to add to your decks or collection
+- **Life Counter**: Track player life totals during games
+- **User Profiles**: Personalized user profiles with theme customization
+- **Authentication**: Secure user authentication powered by Supabase
+- **Format Support**: Support for different Magic formats (Commander, Standard, etc.)
+
+## Technology Stack
+
+- **Frontend**: React 18 with TypeScript
+- **Build Tool**: Vite
+- **Styling**: Tailwind CSS with custom animations
+- **Backend/Database**: Supabase (PostgreSQL)
+- **Authentication**: Supabase Auth
+- **Icons**: Lucide React
+- **Linting**: ESLint with TypeScript support
+
+## Project Structure
+
+```
+deckerr/
+├── src/
+│   ├── components/          # React components
+│   │   ├── CardCarousel.tsx    # Card carousel display
+│   │   ├── CardSearch.tsx      # Card search interface
+│   │   ├── Collection.tsx      # Collection management
+│   │   ├── DeckBuilder.tsx     # Deck building interface
+│   │   ├── DeckCard.tsx        # Deck card component
+│   │   ├── DeckEditor.tsx      # Deck editing interface
+│   │   ├── DeckList.tsx        # List of user decks
+│   │   ├── DeckManager.tsx     # Deck management
+│   │   ├── LifeCounter.tsx     # Game life counter
+│   │   ├── LoginForm.tsx       # User authentication form
+│   │   ├── MagicCard.tsx       # Magic card display component
+│   │   ├── ManaIcons.tsx       # Mana symbol icons
+│   │   ├── Navigation.tsx      # App navigation
+│   │   └── Profile.tsx         # User profile page
+│   │
+│   ├── contexts/            # React contexts
+│   │   └── AuthContext.tsx     # Authentication context
+│   │
+│   ├── lib/                 # Library code
+│   │   ├── Entities.ts         # Supabase database types
+│   │   └── supabase.ts         # Supabase client configuration
+│   │
+│   ├── services/            # API and service layers
+│   │   └── api.ts              # API service functions
+│   │
+│   ├── types/               # TypeScript type definitions
+│   │   └── index.ts            # Shared types
+│   │
+│   ├── utils/               # Utility functions
+│   │   ├── deckValidation.ts   # Deck validation logic
+│   │   └── theme.ts            # Theme utilities
+│   │
+│   ├── App.tsx              # Main application component
+│   ├── main.tsx             # Application entry point
+│   ├── main.js              # JavaScript entry
+│   ├── index.css            # Global styles
+│   └── vite-env.d.ts        # Vite type definitions
+│
+├── public/                  # Static assets (if any)
+│
+├── index.html               # HTML entry point
+├── package.json             # Project dependencies
+├── vite.config.ts           # Vite configuration
+├── tsconfig.json            # TypeScript configuration
+├── tsconfig.app.json        # App-specific TS config
+├── tsconfig.node.json       # Node-specific TS config
+├── tailwind.config.js       # Tailwind CSS configuration
+├── postcss.config.js        # PostCSS configuration
+├── eslint.config.js         # ESLint configuration
+├── LICENSE                  # Project license
+└── README.md                # This file
+```
+
+## Database Schema
+
+The application uses Supabase with the following main tables:
+
+- **profiles**: User profiles with username and theme preferences
+- **decks**: User decks with name, format, and timestamps
+- **deck_cards**: Cards in decks with quantity and commander status
+- **collections**: User card collections with quantities
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js (v18 or higher)
+- npm or pnpm
+- Supabase account and project
+
+### Installation
+
+1. Clone the repository:
+   ```bash
+   git clone <repository-url>
+   cd deckerr
+   ```
+
+2. Install dependencies:
+   ```bash
+   npm install
+   # or
+   pnpm install
+   ```
+
+3. Set up environment variables:
+   Create a `.env` file with your Supabase credentials:
+   ```
+   VITE_SUPABASE_URL=your_supabase_url
+   VITE_SUPABASE_ANON_KEY=your_supabase_anon_key
+   ```
+
+4. Run the development server:
+   ```bash
+   npm run dev
+   ```
+
+5. Open your browser to `http://localhost:5173`
+
+## Available Scripts
+
+- `npm run dev` - Start development server
+- `npm run build` - Build for production
+- `npm run preview` - Preview production build
+- `npm run lint` - Run ESLint
+
+## Features in Detail
+
+### Deck Builder
+Build and customize your Magic decks with support for different formats. The deck editor validates your deck composition according to format rules.
+
+### Collection Manager
+Track which cards you own and their quantities, making it easy to see what cards you have available when building decks.
+
+### Card Search
+Search through Magic cards using various filters and criteria to find exactly what you need for your deck.
+
+### Life Counter
+A built-in life counter for tracking player life totals during games, with an animated interface.
+
+## License
+
+See the LICENSE file for details.

dev-dist/registerSW.js

@@ -0,0 +1 @@
+if('serviceWorker' in navigator) navigator.serviceWorker.register('/dev-sw.js?dev-sw', { scope: '/', type: 'classic' })

dev-dist/sw.js

@@ -0,0 +1,110 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// If the loader is already loaded, just stop.
+if (!self.define) {
+  let registry = {};
+
+  // Used for `eval` and `importScripts` where we can't get script URL by other means.
+  // In both cases, it's safe to use a global var because those functions are synchronous.
+  let nextDefineUri;
+
+  const singleRequire = (uri, parentUri) => {
+    uri = new URL(uri + ".js", parentUri).href;
+    return registry[uri] || (
+      
+        new Promise(resolve => {
+          if ("document" in self) {
+            const script = document.createElement("script");
+            script.src = uri;
+            script.onload = resolve;
+            document.head.appendChild(script);
+          } else {
+            nextDefineUri = uri;
+            importScripts(uri);
+            resolve();
+          }
+        })
+      
+      .then(() => {
+        let promise = registry[uri];
+        if (!promise) {
+          throw new Error(`Module ${uri} didn’t register its module`);
+        }
+        return promise;
+      })
+    );
+  };
+
+  self.define = (depsNames, factory) => {
+    const uri = nextDefineUri || ("document" in self ? document.currentScript.src : "") || location.href;
+    if (registry[uri]) {
+      // Module is already loading or loaded.
+      return;
+    }
+    let exports = {};
+    const require = depUri => singleRequire(depUri, uri);
+    const specialDeps = {
+      module: { uri },
+      exports,
+      require
+    };
+    registry[uri] = Promise.all(depsNames.map(
+      depName => specialDeps[depName] || require(depName)
+    )).then(deps => {
+      factory(...deps);
+      return exports;
+    });
+  };
+}
+define(['./workbox-ca84f546'], (function (workbox) { 'use strict';
+
+  self.skipWaiting();
+  workbox.clientsClaim();
+
+  /**
+   * The precacheAndRoute() method efficiently caches and responds to
+   * requests for URLs in the manifest.
+   * See https://goo.gl/S9QRab
+   */
+  workbox.precacheAndRoute([{
+    "url": "registerSW.js",
+    "revision": "3ca0b8505b4bec776b69afdba2768812"
+  }, {
+    "url": "index.html",
+    "revision": "0.vigoqq958cg"
+  }], {});
+  workbox.cleanupOutdatedCaches();
+  workbox.registerRoute(new workbox.NavigationRoute(workbox.createHandlerBoundToURL("index.html"), {
+    allowlist: [/^\/$/]
+  }));
+  workbox.registerRoute(/^https:\/\/api\.scryfall\.com\/.*/i, new workbox.CacheFirst({
+    "cacheName": "scryfall-cache",
+    plugins: [new workbox.ExpirationPlugin({
+      maxEntries: 500,
+      maxAgeSeconds: 604800
+    }), new workbox.CacheableResponsePlugin({
+      statuses: [0, 200]
+    })]
+  }), 'GET');
+  workbox.registerRoute(/^https:\/\/cards\.scryfall\.io\/.*/i, new workbox.CacheFirst({
+    "cacheName": "card-images-cache",
+    plugins: [new workbox.ExpirationPlugin({
+      maxEntries: 1000,
+      maxAgeSeconds: 2592000
+    }), new workbox.CacheableResponsePlugin({
+      statuses: [0, 200]
+    })]
+  }), 'GET');
+
+}));

docker-compose.selfhosted.yml

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+version: '3.8'
+
+# Full self-hosted deployment with Supabase included
+# This includes PostgreSQL, Auth, REST API, and the Deckerr frontend
+
+services:
+  # ============================================
+  # DECKERR FRONTEND
+  # ============================================
+  deckerr:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        - VITE_SUPABASE_URL=http://${SITE_URL:-localhost}:${KONG_HTTP_PORT:-8000}
+        - VITE_SUPABASE_ANON_KEY=${ANON_KEY}
+    container_name: deckerr
+    ports:
+      - "${DECKERR_PORT:-3000}:80"
+    restart: unless-stopped
+    depends_on:
+      kong:
+        condition: service_healthy
+
+  # ============================================
+  # SUPABASE SERVICES
+  # ============================================
+
+  # PostgreSQL Database
+  db:
+    image: supabase/postgres:15.1.1.78
+    container_name: supabase-db
+    healthcheck:
+      test: pg_isready -U postgres -h localhost
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    ports:
+      - "${POSTGRES_PORT:-5432}:5432"
+    environment:
+      POSTGRES_HOST: /var/run/postgresql
+      PGPORT: 5432
+      POSTGRES_PORT: 5432
+      PGPASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      PGDATABASE: postgres
+      POSTGRES_DB: postgres
+    volumes:
+      - supabase-db-data:/var/lib/postgresql/data
+      - ./supabase/migrations:/docker-entrypoint-initdb.d/migrations
+    restart: unless-stopped
+
+  # Supabase Kong API Gateway
+  kong:
+    image: kong:2.8.1
+    container_name: supabase-kong
+    restart: unless-stopped
+    ports:
+      - "${KONG_HTTP_PORT:-8000}:8000/tcp"
+      - "${KONG_HTTPS_PORT:-8443}:8443/tcp"
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      KONG_DATABASE: "off"
+      KONG_DECLARATIVE_CONFIG: /home/kong/kong.yml
+      KONG_DNS_ORDER: LAST,A,CNAME
+      KONG_PLUGINS: request-transformer,cors,key-auth,acl,basic-auth
+      KONG_NGINX_PROXY_PROXY_BUFFER_SIZE: 160k
+      KONG_NGINX_PROXY_PROXY_BUFFERS: 64 160k
+      SUPABASE_ANON_KEY: ${ANON_KEY}
+      SUPABASE_SERVICE_KEY: ${SERVICE_ROLE_KEY}
+    volumes:
+      - ./docker/kong.yml:/home/kong/kong.yml:ro
+    healthcheck:
+      test: ["CMD", "kong", "health"]
+      interval: 10s
+      timeout: 10s
+      retries: 5
+
+  # Supabase Auth (GoTrue)
+  auth:
+    image: supabase/gotrue:v2.143.0
+    container_name: supabase-auth
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:9999/health"]
+      interval: 5s
+      timeout: 5s
+      retries: 3
+    restart: unless-stopped
+    environment:
+      GOTRUE_API_HOST: 0.0.0.0
+      GOTRUE_API_PORT: 9999
+      API_EXTERNAL_URL: ${API_EXTERNAL_URL:-http://localhost:8000}
+
+      GOTRUE_DB_DRIVER: postgres
+      GOTRUE_DB_DATABASE_URL: postgres://supabase_auth_admin:${POSTGRES_PASSWORD}@db:5432/postgres
+
+      GOTRUE_SITE_URL: ${SITE_URL:-http://localhost:3000}
+      GOTRUE_URI_ALLOW_LIST: ${ADDITIONAL_REDIRECT_URLS:-}
+      GOTRUE_DISABLE_SIGNUP: ${DISABLE_SIGNUP:-false}
+
+      GOTRUE_JWT_ADMIN_ROLES: service_role
+      GOTRUE_JWT_AUD: authenticated
+      GOTRUE_JWT_DEFAULT_GROUP_NAME: authenticated
+      GOTRUE_JWT_EXP: ${JWT_EXPIRY:-3600}
+      GOTRUE_JWT_SECRET: ${JWT_SECRET}
+
+      GOTRUE_EXTERNAL_EMAIL_ENABLED: ${ENABLE_EMAIL_SIGNUP:-true}
+      GOTRUE_EXTERNAL_ANONYMOUS_USERS_ENABLED: ${ENABLE_ANONYMOUS_USERS:-false}
+      GOTRUE_MAILER_AUTOCONFIRM: ${ENABLE_EMAIL_AUTOCONFIRM:-false}
+
+      GOTRUE_SMTP_HOST: ${SMTP_HOST:-}
+      GOTRUE_SMTP_PORT: ${SMTP_PORT:-587}
+      GOTRUE_SMTP_USER: ${SMTP_USER:-}
+      GOTRUE_SMTP_PASS: ${SMTP_PASS:-}
+      GOTRUE_SMTP_ADMIN_EMAIL: ${SMTP_ADMIN_EMAIL:-}
+      GOTRUE_SMTP_SENDER_NAME: ${SMTP_SENDER_NAME:-Deckerr}
+      GOTRUE_MAILER_URLPATHS_INVITE: /auth/v1/verify
+      GOTRUE_MAILER_URLPATHS_CONFIRMATION: /auth/v1/verify
+      GOTRUE_MAILER_URLPATHS_RECOVERY: /auth/v1/verify
+      GOTRUE_MAILER_URLPATHS_EMAIL_CHANGE: /auth/v1/verify
+
+  # Supabase REST API (PostgREST)
+  rest:
+    image: postgrest/postgrest:v12.0.1
+    container_name: supabase-rest
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: unless-stopped
+    environment:
+      PGRST_DB_URI: postgres://authenticator:${POSTGRES_PASSWORD}@db:5432/postgres
+      PGRST_DB_SCHEMAS: ${PGRST_DB_SCHEMAS:-public,graphql_public}
+      PGRST_DB_ANON_ROLE: anon
+      PGRST_JWT_SECRET: ${JWT_SECRET}
+      PGRST_DB_USE_LEGACY_GUCS: "false"
+      PGRST_APP_SETTINGS_JWT_SECRET: ${JWT_SECRET}
+      PGRST_APP_SETTINGS_JWT_EXP: ${JWT_EXPIRY:-3600}
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:3000/ready || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+
+  # Supabase Realtime
+  realtime:
+    image: supabase/realtime:v2.28.32
+    container_name: supabase-realtime
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "curl", "-sSfL", "--head", "-o", "/dev/null", "-H", "Authorization: Bearer ${ANON_KEY}", "http://localhost:4000/api/tenants/realtime-dev/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+    restart: unless-stopped
+    environment:
+      PORT: 4000
+      DB_HOST: db
+      DB_PORT: 5432
+      DB_USER: supabase_admin
+      DB_PASSWORD: ${POSTGRES_PASSWORD}
+      DB_NAME: postgres
+      DB_AFTER_CONNECT_QUERY: 'SET search_path TO _realtime'
+      DB_ENC_KEY: supabaserealtime
+      API_JWT_SECRET: ${JWT_SECRET}
+      SECRET_KEY_BASE: ${SECRET_KEY_BASE:-UpNVntn3cDxHJpq99YMc1T1AQgQpc8kfYTuRgBiYa15BLrx8etQoXz3gZv1/u2oq}
+      ERL_AFLAGS: -proto_dist inet_tcp
+      DNS_NODES: "''"
+      RLIMIT_NOFILE: "10000"
+      APP_NAME: realtime
+      SEED_SELF_HOST: true
+      REPLICATION_MODE: RLS
+      REPLICATION_POLL_INTERVAL: 100
+      SECURE_CHANNELS: "true"
+      SLOT_NAME: supabase_realtime_rls
+      TEMPORARY_SLOT: "true"
+
+  # Supabase Meta (for Studio - optional)
+  meta:
+    image: supabase/postgres-meta:v0.80.0
+    container_name: supabase-meta
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: unless-stopped
+    environment:
+      PG_META_PORT: 8080
+      PG_META_DB_HOST: db
+      PG_META_DB_PORT: 5432
+      PG_META_DB_NAME: postgres
+      PG_META_DB_USER: supabase_admin
+      PG_META_DB_PASSWORD: ${POSTGRES_PASSWORD}
+
+volumes:
+  supabase-db-data:

docker-compose.yml

@@ -0,0 +1,22 @@
+version: '3.8'
+
+# Simple deployment - Uses external Supabase (hosted or self-hosted separately)
+# For full self-hosted setup with Supabase included, use docker-compose.selfhosted.yml
+
+services:
+  deckerr:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        - VITE_SUPABASE_URL=${VITE_SUPABASE_URL}
+        - VITE_SUPABASE_ANON_KEY=${VITE_SUPABASE_ANON_KEY}
+    container_name: deckerr
+    ports:
+      - "${PORT:-3000}:80"
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:80"]
+      interval: 30s
+      timeout: 10s
+      retries: 3

docker/kong.yml

@@ -0,0 +1,138 @@
+_format_version: "2.1"
+_transform: true
+
+###
+### Consumers / Users
+###
+consumers:
+  - username: DASHBOARD
+  - username: anon
+    keyauth_credentials:
+      - key: ${SUPABASE_ANON_KEY}
+  - username: service_role
+    keyauth_credentials:
+      - key: ${SUPABASE_SERVICE_KEY}
+
+###
+### Access Control Lists
+###
+acls:
+  - consumer: anon
+    group: anon
+  - consumer: service_role
+    group: admin
+
+###
+### API Routes
+###
+services:
+  ## Open Auth routes
+  - name: auth-v1-open
+    url: http://auth:9999/verify
+    routes:
+      - name: auth-v1-open
+        strip_path: true
+        paths:
+          - /auth/v1/verify
+    plugins:
+      - name: cors
+  - name: auth-v1-open-callback
+    url: http://auth:9999/callback
+    routes:
+      - name: auth-v1-open-callback
+        strip_path: true
+        paths:
+          - /auth/v1/callback
+    plugins:
+      - name: cors
+  - name: auth-v1-open-authorize
+    url: http://auth:9999/authorize
+    routes:
+      - name: auth-v1-open-authorize
+        strip_path: true
+        paths:
+          - /auth/v1/authorize
+    plugins:
+      - name: cors
+
+  ## Secure Auth routes
+  - name: auth-v1
+    _comment: "GoTrue: /auth/v1/* -> http://auth:9999/*"
+    url: http://auth:9999/
+    routes:
+      - name: auth-v1-all
+        strip_path: true
+        paths:
+          - /auth/v1/
+    plugins:
+      - name: cors
+      - name: key-auth
+        config:
+          hide_credentials: false
+      - name: acl
+        config:
+          hide_groups_header: true
+          allow:
+            - admin
+            - anon
+
+  ## Secure REST routes
+  - name: rest-v1
+    _comment: "PostgREST: /rest/v1/* -> http://rest:3000/*"
+    url: http://rest:3000/
+    routes:
+      - name: rest-v1-all
+        strip_path: true
+        paths:
+          - /rest/v1/
+    plugins:
+      - name: cors
+      - name: key-auth
+        config:
+          hide_credentials: false
+      - name: acl
+        config:
+          hide_groups_header: true
+          allow:
+            - admin
+            - anon
+
+  ## Realtime routes
+  - name: realtime-v1
+    _comment: "Realtime: /realtime/v1/* -> ws://realtime:4000/socket/*"
+    url: http://realtime:4000/socket/
+    routes:
+      - name: realtime-v1-all
+        strip_path: true
+        paths:
+          - /realtime/v1/
+    plugins:
+      - name: cors
+      - name: key-auth
+        config:
+          hide_credentials: false
+      - name: acl
+        config:
+          hide_groups_header: true
+          allow:
+            - admin
+            - anon
+
+  ## Meta routes (for Supabase Studio)
+  - name: meta
+    _comment: "pg-meta: /pg/* -> http://meta:8080/*"
+    url: http://meta:8080/
+    routes:
+      - name: meta-all
+        strip_path: true
+        paths:
+          - /pg/
+    plugins:
+      - name: key-auth
+        config:
+          hide_credentials: false
+      - name: acl
+        config:
+          hide_groups_header: true
+          allow:
+            - admin

index.html

@@ -2,9 +2,28 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Vite + React + TS</title>
+    <link rel="icon" type="image/svg+xml" href="/icon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
+
+    <!-- Primary Meta Tags -->
+    <title>Deckerr - Card Deck Manager</title>
+    <meta name="title" content="Deckerr - Card Deck Manager" />
+    <meta name="description" content="Manage your trading card game decks on the go. Build, organize, and track your card collection." />
+
+    <!-- PWA Meta Tags -->
+    <meta name="theme-color" content="#0f172a" />
+    <meta name="mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+    <meta name="apple-mobile-web-app-title" content="Deckerr" />
+
+    <!-- Apple Touch Icons -->
+    <link rel="apple-touch-icon" href="/icon.svg" />
+    <link rel="apple-touch-icon" sizes="180x180" href="/icon.svg" />
+
+    <!-- MS Application -->
+    <meta name="msapplication-TileColor" content="#0f172a" />
+    <meta name="msapplication-config" content="/browserconfig.xml" />
   </head>
   <body>
     <div id="root"></div>

nginx.conf

@@ -0,0 +1,29 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Gzip compression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_proxied expired no-cache no-store private auth;
+    gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml application/javascript application/json;
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Handle SPA routing - serve index.html for all routes
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+}

package.json

@@ -1,7 +1,7 @@
 {
-  "name": "vite-react-typescript-starter",
+  "name": "deckerr",
   "private": true,
-  "version": "0.0.0",
+  "version": "1.0.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
@@ -29,6 +29,7 @@
     "tailwindcss": "^3.4.1",
     "typescript": "^5.5.3",
     "typescript-eslint": "^8.3.0",
-    "vite": "^5.4.2"
+    "vite": "^5.4.2",
+    "vite-plugin-pwa": "^1.1.0"
   }
 }

public/browserconfig.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+  <msapplication>
+    <tile>
+      <square150x150logo src="/icon.svg"/>
+      <TileColor>#0f172a</TileColor>
+    </tile>
+  </msapplication>
+</browserconfig>

public/icon.svg

@@ -0,0 +1,23 @@
+<svg width="512" height="512" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg">
+  <!-- Background -->
+  <rect width="512" height="512" fill="#0f172a" rx="128"/>
+
+  <!-- Card stack effect - back card -->
+  <rect x="120" y="130" width="240" height="320" rx="16" fill="#1e293b" transform="rotate(-8 240 290)"/>
+
+  <!-- Card stack effect - middle card -->
+  <rect x="120" y="130" width="240" height="320" rx="16" fill="#334155" transform="rotate(-4 240 290)"/>
+
+  <!-- Front card -->
+  <rect x="120" y="130" width="240" height="320" rx="16" fill="#475569"/>
+  <rect x="135" y="145" width="210" height="290" rx="12" fill="#1e293b"/>
+
+  <!-- Card details/design -->
+  <circle cx="240" cy="200" r="40" fill="#3b82f6" opacity="0.6"/>
+  <rect x="160" y="280" width="160" height="12" rx="6" fill="#3b82f6" opacity="0.8"/>
+  <rect x="160" y="310" width="120" height="12" rx="6" fill="#3b82f6" opacity="0.6"/>
+  <rect x="160" y="340" width="140" height="12" rx="6" fill="#3b82f6" opacity="0.4"/>
+
+  <!-- "D" Letter overlay -->
+  <text x="256" y="310" font-family="Arial, sans-serif" font-size="160" font-weight="bold" fill="#3b82f6" text-anchor="middle" opacity="0.15">D</text>
+</svg>

public/manifest.json

@@ -0,0 +1,111 @@
+{
+  "name": "Deckerr - Card Deck Manager",
+  "short_name": "Deckerr",
+  "description": "Manage your trading card game decks on the go",
+  "theme_color": "#0f172a",
+  "background_color": "#0f172a",
+  "display": "standalone",
+  "orientation": "portrait",
+  "scope": "/",
+  "start_url": "/",
+  "icons": [
+    {
+      "src": "/icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-128x128.png",
+      "sizes": "128x128",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-152x152.png",
+      "sizes": "152x152",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-384x384.png",
+      "sizes": "384x384",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-maskable-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/icon-maskable-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
+    }
+  ],
+  "screenshots": [
+    {
+      "src": "/screenshot-mobile-1.png",
+      "sizes": "540x720",
+      "type": "image/png",
+      "form_factor": "narrow"
+    },
+    {
+      "src": "/screenshot-desktop-1.png",
+      "sizes": "1280x720",
+      "type": "image/png",
+      "form_factor": "wide"
+    }
+  ],
+  "categories": ["games", "utilities"],
+  "shortcuts": [
+    {
+      "name": "My Decks",
+      "short_name": "Decks",
+      "description": "View your deck collection",
+      "url": "/?page=home",
+      "icons": [{ "src": "/icon-192x192.png", "sizes": "192x192" }]
+    },
+    {
+      "name": "Search Cards",
+      "short_name": "Search",
+      "description": "Search for cards",
+      "url": "/?page=search",
+      "icons": [{ "src": "/icon-192x192.png", "sizes": "192x192" }]
+    },
+    {
+      "name": "Life Counter",
+      "short_name": "Life",
+      "description": "Track life totals",
+      "url": "/?page=life-counter",
+      "icons": [{ "src": "/icon-192x192.png", "sizes": "192x192" }]
+    }
+  ]
+}

src/App.tsx

@@ -5,12 +5,15 @@ import React, { useState } from 'react';
 import Navigation from './components/Navigation';
 import Collection from './components/Collection';
 import DeckEditor from './components/DeckEditor';
-    import Profile from './components/Profile';
 import CardSearch from './components/CardSearch';
 import LifeCounter from './components/LifeCounter';
+import Community from './components/Community';
+import PWAInstallPrompt from './components/PWAInstallPrompt';
 import { AuthProvider, useAuth } from './contexts/AuthContext';
+import { ToastProvider } from './contexts/ToastContext';
+import CardMosaicBackground from "./components/CardMosaicBackground.tsx";
 
-    type Page = 'home' | 'deck' | 'login' | 'collection' | 'edit-deck' | 'profile' | 'search' | 'life-counter';
+type Page = 'home' | 'deck' | 'login' | 'collection' | 'edit-deck' | 'search' | 'life-counter' | 'community';
 
 function AppContent() {
   const [currentPage, setCurrentPage] = useState<Page>('home');
@@ -38,10 +41,13 @@ import React, { useState } from 'react';
     switch (currentPage) {
       case 'home':
         return (
-              <div className="min-h-screen bg-gray-900 text-white p-6 animate-fade-in">
+          <div className="relative  text-white p-3 sm:p-6 animate-fade-in md:min-h-screen">
             <div className="max-w-7xl mx-auto">
-                  <h1 className="text-3xl font-bold mb-6 animate-slide-in-left">My Decks</h1>
-                  <DeckList onDeckEdit={handleDeckEdit} />
+              <h1 className="text-2xl md:text-3xl font-bold mb-4 md:mb-6 animate-slide-in-left">My Decks</h1>
+              <DeckList
+                onDeckEdit={handleDeckEdit}
+                onCreateDeck={() => setCurrentPage('deck')}
+              />
             </div>
           </div>
         );
@@ -59,12 +65,12 @@ import React, { useState } from 'react';
         ) : null;
       case 'collection':
         return <Collection />;
-          case 'profile':
-            return <Profile />;
       case 'search':
         return <CardSearch />;
       case 'life-counter':
         return <LifeCounter />;
+      case 'community':
+        return <Community />;
       case 'login':
         return <LoginForm />;
       default:
@@ -73,17 +79,27 @@ import React, { useState } from 'react';
   };
 
   return (
-        <div className="min-h-screen bg-gray-900">
+    <div className="min-h-screen bg-gray-900 flex flex-col relative">
+      {/* Animated card mosaic overlay */}
+      <CardMosaicBackground />
+
       <Navigation currentPage={currentPage} setCurrentPage={setCurrentPage} />
+      <main className="relative flex-1 overflow-y-auto z-20">
+        <div className="relative min-h-full md:min-h-0 pt-0 md:pt-16 pb-20 md:pb-0">
           {renderPage()}
         </div>
+      </main>
+      <PWAInstallPrompt />
+    </div>
   );
 }
 
 function App() {
   return (
     <AuthProvider>
+      <ToastProvider>
         <AppContent />
+      </ToastProvider>
     </AuthProvider>
   );
 }

src/components/CardMosaicBackground.tsx

@@ -0,0 +1,155 @@
+import React, { useEffect, useState, useRef } from 'react';
+import { getRandomCards } from '../services/api';
+import { Card } from '../types';
+
+export default function CardMosaicBackground() {
+  const [cards, setCards] = useState<Card[]>([]);
+  const [offset, setOffset] = useState({ x: 0, y: 0 });
+  const animationRef = useRef<number>();
+
+  // Grid configuration - large grid to cover entire screen
+  const cardsPerRow = 18;
+  const cardsPerCol = 15;
+  // Spacing adjusted for card transforms: w-64 = 256px
+  // With rotateZ(15deg) and rotateX(60deg), cards need more space
+  const cardWidth = 130; // Horizontal spacing to avoid overlap
+  const cardHeight = 85; // Vertical spacing to avoid overlap
+  const gridWidth = cardsPerRow * cardWidth;
+  const gridHeight = cardsPerCol * cardHeight;
+
+  useEffect(() => {
+    const fetchCards = async () => {
+      try {
+        // Fetch enough cards for one grid
+        const totalCards = cardsPerRow * cardsPerCol;
+        const randomCards = await getRandomCards(totalCards);
+        setCards(randomCards);
+      } catch (error) {
+        console.error('Error fetching background cards:', error);
+      }
+    };
+
+    fetchCards();
+  }, []);
+
+  // Diagonal infinite scroll animation
+  useEffect(() => {
+    if (cards.length === 0) return;
+
+    const speed = 0.5; // Pixels per frame (diagonal speed)
+    let lastTime = Date.now();
+
+    const animate = () => {
+      const now = Date.now();
+      const delta = now - lastTime;
+      lastTime = now;
+
+      setOffset((prev) => {
+        // Move diagonally: right and up
+        let newX = prev.x + (speed * delta) / 16;
+        let newY = prev.y - (speed * delta) / 16;
+
+        // Loop seamlessly when we've moved one full grid
+        if (newX >= gridWidth) newX = newX % gridWidth;
+        if (newY <= -gridHeight) newY = newY % gridHeight;
+
+        return { x: newX, y: newY };
+      });
+
+      animationRef.current = requestAnimationFrame(animate);
+    };
+
+    animationRef.current = requestAnimationFrame(animate);
+
+    return () => {
+      if (animationRef.current) {
+        cancelAnimationFrame(animationRef.current);
+      }
+    };
+  }, [cards.length, gridWidth, gridHeight]);
+
+  if (cards.length === 0) return null;
+
+  // Render the card grid (will be duplicated 4 times for infinite effect)
+  const renderGrid = (offsetX: number, offsetY: number, key: string) => (
+    <div
+      key={key}
+      className="absolute"
+      style={{
+        left: `${offsetX}px`,
+        top: `${offsetY}px`,
+        width: `${gridWidth}px`,
+        height: `${gridHeight}px`,
+        perspective: '2000px', // Apply perspective to parent for uniform card sizes
+        transformStyle: 'preserve-3d',
+      }}
+    >
+      {cards.map((card, index) => {
+        const col = index % cardsPerRow;
+        const row = Math.floor(index / cardsPerRow);
+
+        return (
+          <div
+            key={`${key}-${card.id}-${index}`}
+            className="absolute"
+            style={{
+              left: `${col * cardWidth}px`,
+              top: `${row * cardHeight}px`,
+              transform: `
+                perspective(1000px)
+                rotateX(60deg)
+                rotateY(5deg)
+                rotateZ(15deg)
+              `,
+              opacity: 1.0, // Full opacity - gradient overlay handles the fade
+            }}
+          >
+            <img
+              src={card.image_uris?.normal || card.image_uris?.large}
+              alt=""
+              className="w-64 h-auto rounded-lg shadow-2xl"
+              draggable={false}
+            />
+          </div>
+        );
+      })}
+    </div>
+  );
+
+  return (
+    <div className="fixed inset-0 overflow-hidden pointer-events-none z-10">
+      {/* Scrolling grid container */}
+      <div
+        className="absolute"
+        style={{
+          transform: `translate(${offset.x}px, ${offset.y}px)`,
+          willChange: 'transform',
+        }}
+      >
+        {/* Duplicate grids in 2x2 pattern for seamless infinite scroll */}
+        {/* Position grids to cover entire viewport and beyond */}
+        {renderGrid(-gridWidth, window.innerHeight - gridHeight / 2, 'grid-tl')}
+        {renderGrid(0, window.innerHeight - gridHeight / 2, 'grid-tr')}
+        {renderGrid(-gridWidth, window.innerHeight - gridHeight / 2 + gridHeight, 'grid-bl')}
+        {renderGrid(0, window.innerHeight - gridHeight / 2 + gridHeight, 'grid-br')}
+      </div>
+
+      {/* Fixed gradient overlay - cards pass UNDER and fade naturally */}
+      <div
+        className="absolute inset-0 pointer-events-none z-10"
+        style={{
+          background: `
+            linear-gradient(to top,
+              transparent 0%,
+              transparent 25%,
+              rgba(3, 7, 18, 0.3) 40%,
+              rgba(3, 7, 18, 0.6) 55%,
+              rgba(3, 7, 18, 0.85) 70%,
+              rgb(3, 7, 18) 85%
+            )
+          `
+        }}
+      />
+    </div>
+  );
+}

src/components/CardSearch.tsx

@@ -1,9 +1,13 @@
-import React, { useState } from 'react';
-import { searchCards } from '../services/api';
+import React, { useState, useEffect } from 'react';
+import { RefreshCw, PackagePlus, Loader2, CheckCircle, XCircle, Trash2 } from 'lucide-react';
+import { searchCards, getUserCollection, addCardToCollection } from '../services/api';
 import { Card } from '../types';
+import { useAuth } from '../contexts/AuthContext';
 import MagicCard from './MagicCard';
+import { getManaIconPath } from './ManaCost';
 
 const CardSearch = () => {
+  const { user } = useAuth();
   const [cardName, setCardName] = useState('');
   const [text, setText] = useState('');
   const [rulesText, setRulesText] = useState('');
@@ -40,6 +44,93 @@ const CardSearch = () => {
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
+  // Collection state
+  const [userCollection, setUserCollection] = useState<Map<string, number>>(new Map());
+  const [addingCardId, setAddingCardId] = useState<string | null>(null);
+  const [cardFaceIndex, setCardFaceIndex] = useState<Map<string, number>>(new Map());
+  const [snackbar, setSnackbar] = useState<{ message: string; type: 'success' | 'error' } | null>(null);
+
+  // Load user collection
+  useEffect(() => {
+    const loadUserCollection = async () => {
+      if (!user) return;
+      try {
+        const collection = await getUserCollection(user.id);
+        setUserCollection(collection);
+      } catch (error) {
+        console.error('Error loading user collection:', error);
+      }
+    };
+    loadUserCollection();
+  }, [user]);
+
+  // Helper function to check if a card has an actual back face
+  const isDoubleFaced = (card: Card) => {
+    const backFaceLayouts = ['transform', 'modal_dfc', 'double_faced_token', 'reversible_card'];
+    return card.card_faces && card.card_faces.length > 1 && backFaceLayouts.includes(card.layout);
+  };
+
+  // Get current face index for a card
+  const getCurrentFaceIndex = (cardId: string) => {
+    return cardFaceIndex.get(cardId) || 0;
+  };
+
+  // Toggle card face
+  const toggleCardFace = (cardId: string, totalFaces: number) => {
+    setCardFaceIndex(prev => {
+      const newMap = new Map(prev);
+      const currentIndex = prev.get(cardId) || 0;
+      const nextIndex = (currentIndex + 1) % totalFaces;
+      newMap.set(cardId, nextIndex);
+      return newMap;
+    });
+  };
+
+  // Get card image for current face
+  const getCardImageUri = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.normal || card.card_faces[faceIndex]?.image_uris?.small;
+    }
+    return card.image_uris?.normal || card.image_uris?.small || card.card_faces?.[0]?.image_uris?.normal;
+  };
+
+  // Get card art crop for current face
+  const getCardArtCrop = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.art_crop || card.card_faces[faceIndex]?.image_uris?.normal;
+    }
+    return card.image_uris?.art_crop || card.image_uris?.normal || card.card_faces?.[0]?.image_uris?.art_crop;
+  };
+
+  // Add card to collection
+  const handleAddCardToCollection = async (cardId: string) => {
+    if (!user) {
+      setSnackbar({ message: 'Please log in to add cards to your collection', type: 'error' });
+      setTimeout(() => setSnackbar(null), 3000);
+      return;
+    }
+
+    try {
+      setAddingCardId(cardId);
+      await addCardToCollection(user.id, cardId, 1);
+
+      setUserCollection(prev => {
+        const newMap = new Map(prev);
+        const currentQty = newMap.get(cardId) || 0;
+        newMap.set(cardId, currentQty + 1);
+        return newMap;
+      });
+
+      setSnackbar({ message: 'Card added to collection!', type: 'success' });
+    } catch (error) {
+      console.error('Error adding card to collection:', error);
+      setSnackbar({ message: 'Failed to add card to collection', type: 'error' });
+    } finally {
+      setAddingCardId(null);
+      setTimeout(() => setSnackbar(null), 3000);
+    }
+  };
+
   const handleSearch = async (e: React.FormEvent) => {
     e.preventDefault();
     setLoading(true);
@@ -110,9 +201,9 @@ const CardSearch = () => {
   };
 
   return (
-    <div className="min-h-screen bg-gray-900 text-white p-6">
+    <div className="relative text-white p-3 sm:p-6 md:min-h-screen">
       <div className="max-w-7xl mx-auto">
-        <h1 className="text-3xl font-bold mb-6">Card Search</h1>
+        <h1 className="text-2xl md:text-3xl font-bold mb-4 md:mb-6">Card Search</h1>
         <form onSubmit={handleSearch} className="mb-8 space-y-4">
           {/* Card Details */}
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
@@ -137,7 +228,7 @@ const CardSearch = () => {
               className="w-full px-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
               placeholder="Rules Text (~ for card name)"
             />
-            <div className="flex gap-2">
+            <div className="flex flex-col sm:flex-row gap-2">
               <input
                 type="text"
                 value={typeLine}
@@ -177,9 +268,11 @@ const CardSearch = () => {
                       onChange={() => setColors({ ...colors, [color]: !active })}
                       className="rounded border-gray-700 focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                     />
-                    <span style={{ fontSize: '1.5em' }}>
-                      {color === 'W' ? '⚪' : color === 'U' ? '🔵' : color === 'B' ? '⚫' : color === 'R' ? '🔴' : color === 'G' ? '🟢' : '🟤'}
-                    </span>
+                    {getManaIconPath(color) ? (
+                      <img src={getManaIconPath(color)!} alt={color} className="w-6 h-6" />
+                    ) : (
+                      <span className="w-6 h-6 flex items-center justify-center bg-gray-500 text-white font-bold rounded-full text-sm">{color}</span>
+                    )}
                   </label>
                 ))}
               </div>
@@ -203,9 +296,11 @@ const CardSearch = () => {
                       onChange={() => setCommanderColors({ ...commanderColors, [color]: !active })}
                       className="rounded border-gray-700 focus:ring-2 focus:ring-blue-500 focus:border-transparent"
                     />
-                    <span style={{ fontSize: '1.5em' }}>
-                      {color === 'W' ? '⚪' : color === 'U' ? '🔵' : color === 'B' ? '⚫' : color === 'R' ? '🔴' : color === 'G' ? '🟢' : '🟤'}
-                    </span>
+                    {getManaIconPath(color) ? (
+                      <img src={getManaIconPath(color)!} alt={color} className="w-6 h-6" />
+                    ) : (
+                      <span className="w-6 h-6 flex items-center justify-center bg-gray-500 text-white font-bold rounded-full text-sm">{color}</span>
+                    )}
                   </label>
                 ))}
               </div>
@@ -213,25 +308,32 @@ const CardSearch = () => {
           </div>
 
           {/* Mana Cost */}
-          <div className="grid grid-cols-3 md:grid-cols-6 gap-2">
-            {Object.entries(manaCost).map(([color, count]) => (
+          <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-6 gap-2">
+            {Object.entries(manaCost).map(([color, count]) => {
+              const iconPath = getManaIconPath(color);
+              return (
                 <div key={color} className="flex items-center space-x-2">
-                <span style={{ fontSize: '1.5em' }}>
-                  {color === 'W' ? '⚪' : color === 'U' ? '🔵' : color === 'B' ? '⚫' : color === 'R' ? '🔴' : color === 'G' ? '🟢' : '🟤'}
+                  {iconPath ? (
+                    <img src={iconPath} alt={color} className="w-6 h-6 md:w-8 md:h-8" />
+                  ) : (
+                    <span className="w-6 h-6 md:w-8 md:h-8 flex items-center justify-center bg-gray-500 text-white font-bold rounded-full text-sm">
+                      {color}
                     </span>
+                  )}
                   <input
                     type="number"
                     value={count}
                     onChange={(e) => setManaCost({ ...manaCost, [color]: parseInt(e.target.value) })}
-                  className="w-16 px-2 py-1 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
+                    className="w-14 sm:w-16 px-2 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
                     min="0"
                   />
                 </div>
-            ))}
+              );
+            })}
           </div>
 
           {/* Stats */}
-          <div className="flex gap-2">
+          <div className="flex flex-col sm:flex-row gap-2">
             <select
               value={manaValueComparison}
               onChange={(e) => setManaValueComparison(e.target.value)}
@@ -272,7 +374,7 @@ const CardSearch = () => {
           </div>
 
           {/* Formats */}
-          <div className="flex gap-2">
+          <div className="flex flex-col sm:flex-row gap-2">
             <select
               value={format}
               onChange={(e) => setFormat(e.target.value)}
@@ -314,7 +416,7 @@ const CardSearch = () => {
           </div>
 
           {/* Sets */}
-          <div className="flex gap-2">
+          <div className="flex flex-col sm:flex-row gap-2">
             <input
               type="text"
               value={set}
@@ -350,7 +452,7 @@ const CardSearch = () => {
           </div>
 
           {/* Criteria */}
-          <div className="flex gap-2">
+          <div className="flex flex-col sm:flex-row gap-2">
             <input
               type="text"
               value={criteria}
@@ -377,7 +479,7 @@ const CardSearch = () => {
           </div>
 
           {/* Prices */}
-          <div className="flex gap-2">
+          <div className="flex flex-col sm:flex-row gap-2">
             <select
               value={currency}
               onChange={(e) => setCurrency(e.target.value)}
@@ -504,7 +606,7 @@ const CardSearch = () => {
 
           <button
             type="submit"
-            className="mt-4 px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg"
+            className="mt-4 w-full sm:w-auto min-h-[44px] px-6 py-3 bg-blue-600 hover:bg-blue-700 rounded-lg font-medium text-base"
           >
             Search
           </button>
@@ -523,19 +625,172 @@ const CardSearch = () => {
         )}
 
         {searchResults && searchResults.length > 0 && (
-          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
-            {searchResults.map((card) => (
-              <div key={card.id} className="bg-gray-800 rounded-lg overflow-hidden">
-                <MagicCard card={card} />
-                <div className="p-4">
-                  <h3 className="font-bold mb-2">{card.name}</h3>
-                  <p className="text-gray-400 text-sm">{card.type_line}</p>
-                </div>
-              </div>
-            ))}
-          </div>
+          <>
+            {/* Mobile: Horizontal list layout */}
+            <div className="flex flex-col gap-2 sm:hidden">
+              {searchResults.map((card) => {
+                const currentFaceIndex = getCurrentFaceIndex(card.id);
+                const isMultiFaced = isDoubleFaced(card);
+                const inCollection = userCollection.get(card.id) || 0;
+                const isAddingThisCard = addingCardId === card.id;
+
+                const displayName = isMultiFaced && card.card_faces
+                  ? card.card_faces[currentFaceIndex]?.name || card.name
+                  : card.name;
+
+                return (
+                  <div key={card.id} className="flex bg-gray-800 rounded-lg overflow-hidden">
+                    {/* Card art crop */}
+                    <div className="relative w-16 h-16 flex-shrink-0">
+                      <img
+                        src={getCardArtCrop(card, currentFaceIndex)}
+                        alt={displayName}
+                        className="w-full h-full object-cover rounded-l-lg"
+                      />
+                      {isMultiFaced && (
+                        <button
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            toggleCardFace(card.id, card.card_faces!.length);
+                          }}
+                          className="absolute bottom-0.5 right-0.5 bg-purple-600 text-white p-0.5 rounded-full"
+                        >
+                          <RefreshCw size={10} />
+                        </button>
                       )}
                     </div>
+                    {/* Info */}
+                    <div className="flex-1 p-2 flex flex-col justify-center min-w-0">
+                      <h3 className="font-bold text-sm truncate">{displayName}</h3>
+                      <div className="flex items-center gap-2 text-xs text-gray-400">
+                        {card.prices?.usd && <span>${card.prices.usd}</span>}
+                        {inCollection > 0 && (
+                          <span className="text-green-400 flex items-center gap-0.5">
+                            <CheckCircle size={10} />
+                            x{inCollection}
+                          </span>
+                        )}
+                      </div>
+                    </div>
+                    {/* Action button */}
+                    <div className="flex items-center p-2">
+                      <button
+                        onClick={() => handleAddCardToCollection(card.id)}
+                        disabled={isAddingThisCard}
+                        className="p-2.5 bg-green-600 active:bg-green-700 disabled:bg-gray-600 rounded-lg"
+                        title="Add to collection"
+                      >
+                        {isAddingThisCard ? (
+                          <Loader2 className="animate-spin" size={18} />
+                        ) : (
+                          <PackagePlus size={18} />
+                        )}
+                      </button>
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+
+            {/* Desktop: Grid layout */}
+            <div className="hidden sm:grid sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6 gap-3">
+              {searchResults.map((card) => {
+                const currentFaceIndex = getCurrentFaceIndex(card.id);
+                const isMultiFaced = isDoubleFaced(card);
+                const inCollection = userCollection.get(card.id) || 0;
+                const isAddingThisCard = addingCardId === card.id;
+
+                const displayName = isMultiFaced && card.card_faces
+                  ? card.card_faces[currentFaceIndex]?.name || card.name
+                  : card.name;
+
+                return (
+                  <div key={card.id} className="bg-gray-800 rounded-lg overflow-hidden hover:ring-2 hover:ring-blue-500 transition-all">
+                    <div className="relative">
+                      {getCardImageUri(card, currentFaceIndex) ? (
+                        <img
+                          src={getCardImageUri(card, currentFaceIndex)}
+                          alt={displayName}
+                          className="w-full h-auto"
+                        />
+                      ) : (
+                        <MagicCard card={card} />
+                      )}
+                      {isMultiFaced && (
+                        <button
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            toggleCardFace(card.id, card.card_faces!.length);
+                          }}
+                          className="absolute bottom-2 right-2 bg-purple-600 hover:bg-purple-700 text-white p-2 rounded-full shadow-lg transition-all"
+                          title="Flip card"
+                        >
+                          <RefreshCw size={16} />
+                        </button>
+                      )}
+                      {inCollection > 0 && (
+                        <span className="absolute top-1 right-1 text-xs bg-green-600 px-2 py-0.5 rounded-full flex items-center gap-1">
+                          <CheckCircle size={12} />
+                          x{inCollection}
+                        </span>
+                      )}
+                    </div>
+                    <div className="p-3">
+                      <h3 className="font-bold text-sm truncate mb-1">{displayName}</h3>
+                      <p className="text-gray-400 text-xs truncate mb-2">
+                        {isMultiFaced && card.card_faces
+                          ? card.card_faces[currentFaceIndex]?.type_line || card.type_line
+                          : card.type_line}
+                      </p>
+                      {card.prices?.usd && (
+                        <div className="text-xs text-gray-400 mb-2">${card.prices.usd}</div>
+                      )}
+                      <button
+                        onClick={() => handleAddCardToCollection(card.id)}
+                        disabled={isAddingThisCard}
+                        className="w-full px-3 py-2 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center justify-center gap-2 text-sm"
+                        title="Add to collection"
+                      >
+                        {isAddingThisCard ? (
+                          <Loader2 className="animate-spin" size={16} />
+                        ) : (
+                          <>
+                            <PackagePlus size={16} />
+                            Add
+                          </>
+                        )}
+                      </button>
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+          </>
+        )}
+      </div>
+
+      {/* Snackbar */}
+      {snackbar && (
+        <div
+          className={`fixed bottom-4 right-4 p-4 rounded-lg shadow-lg transition-all duration-300 ${
+            snackbar.type === 'success' ? 'bg-green-500' : 'bg-red-500'
+          } text-white z-[140]`}
+        >
+          <div className="flex items-center justify-between">
+            <div className="flex items-center">
+              {snackbar.type === 'success' ? (
+                <CheckCircle className="mr-2" size={20} />
+              ) : (
+                <XCircle className="mr-2" size={20} />
+              )}
+              <span>{snackbar.message}</span>
+            </div>
+            <button onClick={() => setSnackbar(null)} className="ml-4 text-gray-200 hover:text-white focus:outline-none">
+              <Trash2 size={16} />
+            </button>
+          </div>
+        </div>
+      )}
     </div>
   );
 };

src/components/CardSearchModal.tsx

@@ -1,136 +0,0 @@
-import React, { useState } from 'react';
-import { X, Search } from 'lucide-react';
-import { searchCards } from '../services/api';
-import { Card } from '../types';
-
-interface CardSearchModalProps {
-  isOpen: boolean;
-  onClose: () => void;
-  onSelectCard: (card: Card) => void;
-}
-
-export default function CardSearchModal({ isOpen, onClose, onSelectCard }: CardSearchModalProps) {
-  const [searchQuery, setSearchQuery] = useState('');
-  const [searchResults, setSearchResults] = useState<Card[]>([]);
-  const [loading, setLoading] = useState(false);
-  const [error, setError] = useState<string | null>(null);
-
-  const handleSearch = async (e: React.FormEvent) => {
-    e.preventDefault();
-    if (!searchQuery.trim()) return;
-
-    setLoading(true);
-    setError(null);
-
-    try {
-      const cards = await searchCards(`name:${searchQuery}`);
-      setSearchResults(cards || []);
-    } catch (err) {
-      setError('Failed to fetch cards. Please try again.');
-      console.error('Error fetching cards:', err);
-    } finally {
-      setLoading(false);
-    }
-  };
-
-  const handleSelectCard = (card: Card) => {
-    onSelectCard(card);
-    onClose();
-    setSearchQuery('');
-    setSearchResults([]);
-  };
-
-  if (!isOpen) return null;
-
-  return (
-    <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center p-4 z-50">
-      <div className="bg-gray-800 rounded-lg max-w-4xl w-full max-h-[90vh] flex flex-col">
-        {/* Header */}
-        <div className="flex items-center justify-between p-4 border-b border-gray-700">
-          <h2 className="text-xl font-bold text-white">Search Card for Background</h2>
-          <button
-            onClick={onClose}
-            className="text-gray-400 hover:text-white transition-colors"
-          >
-            <X size={24} />
-          </button>
-        </div>
-
-        {/* Search Form */}
-        <div className="p-4 border-b border-gray-700">
-          <form onSubmit={handleSearch} className="flex gap-2">
-            <input
-              type="text"
-              value={searchQuery}
-              onChange={(e) => setSearchQuery(e.target.value)}
-              className="flex-1 px-4 py-2 bg-gray-900 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
-              placeholder="Search for a card by name..."
-              autoFocus
-            />
-            <button
-              type="submit"
-              className="px-6 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg text-white flex items-center gap-2 transition-colors"
-            >
-              <Search size={20} />
-              Search
-            </button>
-          </form>
-        </div>
-
-        {/* Results */}
-        <div className="flex-1 overflow-y-auto p-4">
-          {loading && (
-            <div className="flex items-center justify-center h-32">
-              <div className="animate-spin rounded-full h-16 w-16 border-t-2 border-b-2 border-blue-500"></div>
-            </div>
-          )}
-
-          {error && (
-            <div className="bg-red-500/10 border border-red-500 rounded-lg p-4 text-red-400">
-              {error}
-            </div>
-          )}
-
-          {!loading && !error && searchResults.length === 0 && searchQuery && (
-            <div className="text-center text-gray-400 py-8">
-              No cards found. Try a different search term.
-            </div>
-          )}
-
-          {!loading && !error && searchResults.length === 0 && !searchQuery && (
-            <div className="text-center text-gray-400 py-8">
-              Search for a card to use as background
-            </div>
-          )}
-
-          {searchResults.length > 0 && (
-            <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-4">
-              {searchResults.map((card) => (
-                <button
-                  key={card.id}
-                  onClick={() => handleSelectCard(card)}
-                  className="bg-gray-700 rounded-lg overflow-hidden hover:ring-2 hover:ring-blue-500 transition-all transform hover:scale-105"
-                >
-                  {card.image_uris?.art_crop ? (
-                    <img
-                      src={card.image_uris.art_crop}
-                      alt={card.name}
-                      className="w-full h-32 object-cover"
-                    />
-                  ) : (
-                    <div className="w-full h-32 bg-gray-600 flex items-center justify-center">
-                      <span className="text-gray-400 text-xs text-center px-2">No Image</span>
-                    </div>
-                  )}
-                  <div className="p-2">
-                    <p className="text-white text-sm font-medium truncate">{card.name}</p>
-                  </div>
-                </button>
-              ))}
-            </div>
-          )}
-        </div>
-      </div>
-    </div>
-  );
-}

src/components/Collection.tsx

@@ -1,121 +1,679 @@
-import React, { useState } from 'react';
-import { Search, Plus } from 'lucide-react';
+import React, { useState, useEffect, useRef, useCallback } from 'react';
+import { Search, Loader2, Trash2, CheckCircle, XCircle, RefreshCw, Plus, Minus, X } from 'lucide-react';
 import { Card } from '../types';
-import { searchCards } from '../services/api';
+import { getUserCollectionPaginated, getCardsByIds, addCardToCollection, getCollectionTotalValue } from '../services/api';
+import { useAuth } from '../contexts/AuthContext';
+import { supabase } from '../lib/supabase';
+import ConfirmModal from './ConfirmModal';
+
+const PAGE_SIZE = 50;
 
 export default function Collection() {
+  const { user } = useAuth();
   const [searchQuery, setSearchQuery] = useState('');
-  const [searchResults, setSearchResults] = useState<Card[]>([]);
   const [collection, setCollection] = useState<{ card: Card; quantity: number }[]>([]);
+  const [filteredCollection, setFilteredCollection] = useState<{ card: Card; quantity: number }[]>([]);
+  const [isLoadingCollection, setIsLoadingCollection] = useState(true);
+  const [isLoadingMore, setIsLoadingMore] = useState(false);
+  const [hasMore, setHasMore] = useState(false);
+  const [offset, setOffset] = useState(0);
+  const [totalCount, setTotalCount] = useState(0);
+  const [totalCollectionValue, setTotalCollectionValue] = useState<number>(0);
+  const [isLoadingTotalValue, setIsLoadingTotalValue] = useState(true);
+  const [hoveredCard, setHoveredCard] = useState<Card | null>(null);
+  const [selectedCard, setSelectedCard] = useState<{ card: Card; quantity: number } | null>(null);
+  const [cardFaceIndex, setCardFaceIndex] = useState<Map<string, number>>(new Map());
+  const [snackbar, setSnackbar] = useState<{ message: string; type: 'success' | 'error' } | null>(null);
+  const [isUpdating, setIsUpdating] = useState(false);
+  const [confirmModal, setConfirmModal] = useState<{
+    isOpen: boolean;
+    cardId: string;
+    cardName: string;
+  }>({ isOpen: false, cardId: '', cardName: '' });
+  const observerTarget = useRef<HTMLDivElement>(null);
 
-  const handleSearch = async (e: React.FormEvent) => {
-    e.preventDefault();
-    if (!searchQuery.trim()) return;
-    
-    try {
-      const cards = await searchCards(searchQuery);
-      setSearchResults(cards);
-    } catch (error) {
-      console.error('Failed to search cards:', error);
-    }
+  // Helper function to check if a card has an actual back face (not adventure/split/etc)
+  const isDoubleFaced = (card: Card) => {
+    // Only show flip for cards with physical back sides
+    const backFaceLayouts = ['transform', 'modal_dfc', 'double_faced_token', 'reversible_card'];
+    return card.card_faces && card.card_faces.length > 1 && backFaceLayouts.includes(card.layout);
   };
 
-  const addToCollection = (card: Card) => {
-    setCollection(prev => {
-      const existing = prev.find(c => c.card.id === card.id);
-      if (existing) {
-        return prev.map(c => 
-          c.card.id === card.id 
-            ? { ...c, quantity: c.quantity + 1 }
-            : c
-        );
+  // Helper function to get the current face index for a card
+  const getCurrentFaceIndex = (cardId: string) => {
+    return cardFaceIndex.get(cardId) || 0;
+  };
+
+  // Helper function to get the image URI for a card (handling both single and double-faced)
+  const getCardImageUri = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.normal || card.card_faces[faceIndex]?.image_uris?.small;
     }
-      return [...prev, { card, quantity: 1 }];
+    return card.image_uris?.normal || card.image_uris?.small;
+  };
+
+  // Helper function to get the large image URI for hover preview
+  const getCardLargeImageUri = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.large || card.card_faces[faceIndex]?.image_uris?.normal;
+    }
+    return card.image_uris?.large || card.image_uris?.normal;
+  };
+
+  // Toggle card face
+  const toggleCardFace = (cardId: string, totalFaces: number) => {
+    setCardFaceIndex(prev => {
+      const newMap = new Map(prev);
+      const currentIndex = prev.get(cardId) || 0;
+      const nextIndex = (currentIndex + 1) % totalFaces;
+      newMap.set(cardId, nextIndex);
+      return newMap;
     });
   };
 
-  return (
-    <div className="min-h-screen bg-gray-900 text-white p-6">
-      <div className="max-w-7xl mx-auto">
-        <h1 className="text-3xl font-bold mb-6">My Collection</h1>
+  // Calculate total collection value (lightweight query from database)
+  useEffect(() => {
+    const calculateTotalValue = async () => {
+      if (!user) {
+        setIsLoadingTotalValue(false);
+        return;
+      }
 
-        {/* Search */}
-        <form onSubmit={handleSearch} className="flex gap-2 mb-8">
-          <div className="relative flex-1">
+      try {
+        setIsLoadingTotalValue(true);
+        // Get total value directly from database (no need to fetch all cards!)
+        const totalValue = await getCollectionTotalValue(user.id);
+        setTotalCollectionValue(totalValue);
+      } catch (error) {
+        console.error('Error calculating total collection value:', error);
+        setTotalCollectionValue(0);
+      } finally {
+        setIsLoadingTotalValue(false);
+      }
+    };
+
+    calculateTotalValue();
+  }, [user]);
+
+  // Subscribe to realtime updates for collection total value
+  useEffect(() => {
+    if (!user) return;
+
+    const profileChannel = supabase
+      .channel('profile-total-value-changes')
+      .on(
+        'postgres_changes',
+        {
+          event: 'UPDATE',
+          schema: 'public',
+          table: 'profiles',
+          filter: `id=eq.${user.id}`,
+        },
+        (payload: any) => {
+          if (payload.new?.collection_total_value !== undefined) {
+            console.log('Collection total value updated:', payload.new.collection_total_value);
+            setTotalCollectionValue(payload.new.collection_total_value);
+          }
+        }
+      )
+      .subscribe();
+
+    return () => {
+      supabase.removeChannel(profileChannel);
+    };
+  }, [user]);
+
+  // Load user's collection from Supabase on mount
+  useEffect(() => {
+    const loadCollection = async () => {
+      if (!user) {
+        setIsLoadingCollection(false);
+        return;
+      }
+
+      try {
+        setIsLoadingCollection(true);
+        setOffset(0);
+        setCollection([]);
+
+        // Get paginated collection from Supabase
+        const result = await getUserCollectionPaginated(user.id, PAGE_SIZE, 0);
+        setTotalCount(result.totalCount);
+        setHasMore(result.hasMore);
+
+        if (result.items.size === 0) {
+          setCollection([]);
+          setFilteredCollection([]);
+          return;
+        }
+
+        // Get the actual card data from Scryfall for all cards in this page
+        const cardIds = Array.from(result.items.keys());
+        const cards = await getCardsByIds(cardIds);
+
+        // Combine card data with quantities
+        const collectionWithCards = cards.map(card => ({
+          card,
+          quantity: result.items.get(card.id) || 0,
+        }));
+
+        setCollection(collectionWithCards);
+        setFilteredCollection(collectionWithCards);
+        setOffset(PAGE_SIZE);
+      } catch (error) {
+        console.error('Error loading collection:', error);
+        setSnackbar({ message: 'Failed to load collection', type: 'error' });
+      } finally {
+        setIsLoadingCollection(false);
+      }
+    };
+
+    loadCollection();
+  }, [user]);
+
+  // Load more cards for infinite scroll
+  const loadMoreCards = useCallback(async () => {
+    if (!user || isLoadingMore || !hasMore) return;
+
+    try {
+      setIsLoadingMore(true);
+
+      // Get next page of collection
+      const result = await getUserCollectionPaginated(user.id, PAGE_SIZE, offset);
+      setHasMore(result.hasMore);
+
+      if (result.items.size === 0) {
+        return;
+      }
+
+      // Get card data from Scryfall
+      const cardIds = Array.from(result.items.keys());
+      const cards = await getCardsByIds(cardIds);
+
+      // Combine card data with quantities
+      const newCards = cards.map(card => ({
+        card,
+        quantity: result.items.get(card.id) || 0,
+      }));
+
+      // Deduplicate: only add cards that aren't already in the collection
+      setCollection(prev => {
+        const existingIds = new Set(prev.map(item => item.card.id));
+        const uniqueNewCards = newCards.filter(item => !existingIds.has(item.card.id));
+        return [...prev, ...uniqueNewCards];
+      });
+
+      setOffset(prev => prev + PAGE_SIZE);
+    } catch (error) {
+      console.error('Error loading more cards:', error);
+      setSnackbar({ message: 'Failed to load more cards', type: 'error' });
+    } finally {
+      setIsLoadingMore(false);
+    }
+  }, [user, offset, hasMore, isLoadingMore]);
+
+  // Intersection Observer for infinite scroll
+  useEffect(() => {
+    const observer = new IntersectionObserver(
+      (entries) => {
+        if (entries[0].isIntersecting && hasMore && !isLoadingMore) {
+          loadMoreCards();
+        }
+      },
+      { threshold: 0.1 }
+    );
+
+    const currentTarget = observerTarget.current;
+    if (currentTarget) {
+      observer.observe(currentTarget);
+    }
+
+    return () => {
+      if (currentTarget) {
+        observer.unobserve(currentTarget);
+      }
+    };
+  }, [hasMore, isLoadingMore, loadMoreCards]);
+
+  // Filter collection based on search query
+  useEffect(() => {
+    if (!searchQuery.trim()) {
+      setFilteredCollection(collection);
+      return;
+    }
+
+    const query = searchQuery.toLowerCase();
+    const filtered = collection.filter(({ card }) => {
+      return (
+        card.name.toLowerCase().includes(query) ||
+        card.type_line?.toLowerCase().includes(query) ||
+        card.oracle_text?.toLowerCase().includes(query) ||
+        card.colors?.some(color => color.toLowerCase().includes(query))
+      );
+    });
+
+    setFilteredCollection(filtered);
+  }, [searchQuery, collection]);
+
+  // Update card quantity in collection
+  const updateCardQuantity = async (cardId: string, newQuantity: number) => {
+    if (!user || newQuantity < 0) return;
+
+    try {
+      setIsUpdating(true);
+
+      if (newQuantity === 0) {
+        // Remove card from collection
+        const { error } = await supabase
+          .from('collections')
+          .delete()
+          .eq('user_id', user.id)
+          .eq('card_id', cardId);
+
+        if (error) throw error;
+
+        // Update local state
+        setCollection(prev => prev.filter(item => item.card.id !== cardId));
+        setSelectedCard(null);
+        setSnackbar({ message: 'Card removed from collection', type: 'success' });
+      } else {
+        // Update quantity
+        const { error } = await supabase
+          .from('collections')
+          .update({ quantity: newQuantity, updated_at: new Date().toISOString() })
+          .eq('user_id', user.id)
+          .eq('card_id', cardId);
+
+        if (error) throw error;
+
+        // Update local state
+        setCollection(prev =>
+          prev.map(item =>
+            item.card.id === cardId ? { ...item, quantity: newQuantity } : item
+          )
+        );
+
+        if (selectedCard && selectedCard.card.id === cardId) {
+          setSelectedCard({ ...selectedCard, quantity: newQuantity });
+        }
+
+        setSnackbar({ message: 'Quantity updated', type: 'success' });
+      }
+    } catch (error) {
+      console.error('Error updating card quantity:', error);
+      setSnackbar({ message: 'Failed to update quantity', type: 'error' });
+    } finally {
+      setIsUpdating(false);
+      setTimeout(() => setSnackbar(null), 3000);
+    }
+  };
+
+  // Add one to quantity
+  const incrementQuantity = async (cardId: string, currentQuantity: number) => {
+    await updateCardQuantity(cardId, currentQuantity + 1);
+  };
+
+  // Remove one from quantity
+  const decrementQuantity = async (cardId: string, currentQuantity: number) => {
+    if (currentQuantity > 0) {
+      await updateCardQuantity(cardId, currentQuantity - 1);
+    }
+  };
+
+  return (
+    <div className="relative text-white p-3 sm:p-6 md:min-h-screen">
+      <div className="max-w-7xl mx-auto">
+        <h1 className="text-2xl md:text-3xl font-bold mb-4 md:mb-6">My Collection</h1>
+
+        {/* Search within collection */}
+        <div className="mb-8">
+          <div className="relative">
             <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
             <input
               type="text"
               value={searchQuery}
               onChange={(e) => setSearchQuery(e.target.value)}
               className="w-full pl-10 pr-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent"
-              placeholder="Search cards to add..."
+              placeholder="Search your collection by name, type, or text..."
             />
           </div>
-          <button
-            type="submit"
-            className="px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center gap-2"
-          >
-            <Search size={20} />
-            Search
-          </button>
-        </form>
-
-        {/* Search Results */}
-        {searchResults.length > 0 && (
-          <div className="mb-8">
-            <h2 className="text-xl font-semibold mb-4">Search Results</h2>
-            <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
-              {searchResults.map(card => (
-                <div key={card.id} className="bg-gray-800 rounded-lg overflow-hidden">
-                  {card.image_uris?.normal && (
-                    <img
-                      src={card.image_uris.normal}
-                      alt={card.name}
-                      className="w-full h-auto"
-                    />
-                  )}
-                  <div className="p-4">
-                    <h3 className="font-bold mb-2">{card.name}</h3>
-                    <button
-                      onClick={() => addToCollection(card)}
-                      className="w-full px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center justify-center gap-2"
-                    >
-                      <Plus size={20} />
-                      Add to Collection
-                    </button>
         </div>
-                </div>
-              ))}
-            </div>
-          </div>
-        )}
 
         {/* Collection */}
         <div>
-          <h2 className="text-xl font-semibold mb-4">My Cards</h2>
-          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
-            {collection.map(({ card, quantity }) => (
-              <div key={card.id} className="bg-gray-800 rounded-lg overflow-hidden">
-                {card.image_uris?.normal && (
+          <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-2 mb-4">
+            <h2 className="text-xl font-semibold">
+              {searchQuery ? `Found ${filteredCollection.length} card(s)` : `My Cards (${collection.length} unique, ${collection.reduce((acc, c) => acc + c.quantity, 0)} total)`}
+            </h2>
+            {/* Collection Value Summary */}
+            <div className="bg-gray-800 border border-gray-700 rounded-lg px-4 py-2">
+              <div className="text-xs text-gray-400 mb-0.5">
+                {searchQuery ? 'Filtered Value' : 'Total Collection Value'}
+              </div>
+              <div className="text-lg font-bold text-green-400">
+                {isLoadingTotalValue ? (
+                  <Loader2 className="animate-spin" size={20} />
+                ) : searchQuery ? (
+                  // For search results, calculate from filtered collection
+                  `$${filteredCollection.reduce((total, { card, quantity }) => {
+                    const price = card.prices?.usd ? parseFloat(card.prices.usd) : 0;
+                    return total + (price * quantity);
+                  }, 0).toFixed(2)}`
+                ) : (
+                  // For full collection, use pre-calculated total
+                  `$${totalCollectionValue.toFixed(2)}`
+                )}
+              </div>
+            </div>
+          </div>
+
+          {isLoadingCollection ? (
+            <div className="flex items-center justify-center py-12">
+              <Loader2 className="animate-spin text-blue-500" size={48} />
+            </div>
+          ) : collection.length === 0 ? (
+            <div className="text-center py-12 text-gray-400">
+              <p className="text-lg mb-2">Your collection is empty</p>
+              <p className="text-sm">Add cards from the Deck Manager to build your collection</p>
+            </div>
+          ) : filteredCollection.length === 0 ? (
+            <div className="text-center py-12 text-gray-400">
+              <p className="text-lg mb-2">No cards found</p>
+              <p className="text-sm">Try a different search term</p>
+            </div>
+          ) : (
+            <div className="grid grid-cols-3 sm:grid-cols-4 md:grid-cols-6 lg:grid-cols-8 xl:grid-cols-10 gap-1.5 sm:gap-2">
+              {filteredCollection.map(({ card, quantity }) => {
+                const currentFaceIndex = getCurrentFaceIndex(card.id);
+                const isMultiFaced = isDoubleFaced(card);
+                const displayName = isMultiFaced && card.card_faces
+                  ? card.card_faces[currentFaceIndex]?.name || card.name
+                  : card.name;
+
+                return (
+                  <div
+                    key={card.id}
+                    className="relative group cursor-pointer"
+                    onMouseEnter={() => setHoveredCard(card)}
+                    onMouseLeave={() => setHoveredCard(null)}
+                    onClick={() => setSelectedCard({ card, quantity })}
+                  >
+                    {/* Small card thumbnail */}
+                    <div className="relative rounded-lg overflow-hidden shadow-lg transition-all group-hover:ring-2 group-hover:ring-blue-500">
                       <img
-                    src={card.image_uris.normal}
-                    alt={card.name}
+                        src={getCardImageUri(card, currentFaceIndex)}
+                        alt={displayName}
                         className="w-full h-auto"
                       />
-                )}
-                <div className="p-4">
-                  <div className="flex justify-between items-center mb-2">
-                    <h3 className="font-bold">{card.name}</h3>
-                    <span className="text-sm bg-blue-600 px-2 py-1 rounded">
+                      {/* Quantity badge */}
+                      <div className="absolute top-1 right-1 bg-blue-600 text-white text-xs sm:text-sm font-bold px-2 py-1 rounded-full shadow-lg">
                         x{quantity}
-                    </span>
+                      </div>
+                      {/* Price badge */}
+                      {card.prices?.usd && (
+                        <div className="absolute bottom-1 left-1 bg-green-600 text-white text-[10px] sm:text-xs font-bold px-1.5 py-0.5 rounded shadow-lg">
+                          ${card.prices.usd}
+                        </div>
+                      )}
+                      {/* Flip button for double-faced cards */}
+                      {isMultiFaced && (
+                        <button
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            toggleCardFace(card.id, card.card_faces!.length);
+                          }}
+                          className="absolute bottom-1 right-1 bg-purple-600 hover:bg-purple-700 text-white p-1 rounded-full shadow-lg transition-all"
+                          title="Flip card"
+                        >
+                          <RefreshCw size={12} />
+                        </button>
+                      )}
+                    </div>
+
+                    {/* Card name below thumbnail */}
+                    <div className="mt-1 text-xs text-center truncate px-1">
+                      {displayName}
                     </div>
                   </div>
+                );
+              })}
             </div>
-            ))}
+          )}
+
+          {/* Infinite scroll loading indicator */}
+          {!searchQuery && isLoadingMore && (
+            <div className="flex justify-center py-8">
+              <Loader2 className="animate-spin text-blue-500" size={32} />
             </div>
+          )}
+
+          {/* Observer target for infinite scroll */}
+          {!searchQuery && hasMore && !isLoadingMore && (
+            <div ref={observerTarget} className="h-20" />
+          )}
+
+          {/* End of collection indicator */}
+          {!searchQuery && !hasMore && collection.length > 0 && (
+            <div className="text-center py-8 text-gray-500 text-sm">
+              End of collection • {totalCount} total cards
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Hover Card Preview - only show if no card is selected */}
+      {hoveredCard && !selectedCard && (() => {
+        const currentFaceIndex = getCurrentFaceIndex(hoveredCard.id);
+        const isMultiFaced = isDoubleFaced(hoveredCard);
+        const currentFace = isMultiFaced && hoveredCard.card_faces
+          ? hoveredCard.card_faces[currentFaceIndex]
+          : null;
+
+        const displayName = currentFace?.name || hoveredCard.name;
+        const displayTypeLine = currentFace?.type_line || hoveredCard.type_line;
+        const displayOracleText = currentFace?.oracle_text || hoveredCard.oracle_text;
+
+        return (
+          <div className="hidden lg:block fixed top-1/2 right-8 transform -translate-y-1/2 z-30 pointer-events-none">
+            <div className="bg-gray-800 rounded-lg shadow-2xl p-4 max-w-md">
+              <div className="relative">
+                <img
+                  src={getCardLargeImageUri(hoveredCard, currentFaceIndex)}
+                  alt={displayName}
+                  className="w-full h-auto rounded-lg shadow-lg"
+                />
+                {isMultiFaced && (
+                  <div className="absolute top-2 right-2 bg-purple-600 text-white text-xs font-bold px-2 py-1 rounded-full shadow-lg">
+                    Face {currentFaceIndex + 1}/{hoveredCard.card_faces!.length}
+                  </div>
+                )}
+              </div>
+              <div className="mt-3 space-y-2">
+                <h3 className="text-xl font-bold">{displayName}</h3>
+                <p className="text-sm text-gray-400">{displayTypeLine}</p>
+                {displayOracleText && (
+                  <p className="text-sm text-gray-300 border-t border-gray-700 pt-2">
+                    {displayOracleText}
+                  </p>
+                )}
+                {hoveredCard.prices?.usd && (
+                  <div className="text-sm text-green-400 font-semibold border-t border-gray-700 pt-2">
+                    ${hoveredCard.prices.usd}
+                  </div>
+                )}
               </div>
             </div>
           </div>
         );
+      })()}
+
+      {/* Card Detail Panel - slides in from right */}
+      {selectedCard && (() => {
+        const currentFaceIndex = getCurrentFaceIndex(selectedCard.card.id);
+        const isMultiFaced = isDoubleFaced(selectedCard.card);
+        const currentFace = isMultiFaced && selectedCard.card.card_faces
+          ? selectedCard.card.card_faces[currentFaceIndex]
+          : null;
+
+        const displayName = currentFace?.name || selectedCard.card.name;
+        const displayTypeLine = currentFace?.type_line || selectedCard.card.type_line;
+        const displayOracleText = currentFace?.oracle_text || selectedCard.card.oracle_text;
+
+        return (
+          <>
+            {/* Backdrop */}
+            <div
+              className="fixed inset-0 bg-black bg-opacity-50 z-[110] transition-opacity duration-300"
+              onClick={() => setSelectedCard(null)}
+            />
+
+            {/* Sliding Panel */}
+            <div className="fixed top-0 right-0 h-full w-full md:w-96 bg-gray-800 shadow-2xl z-[120] overflow-y-auto animate-slide-in-right">
+              {/* Close button - fixed position, stays visible when scrolling */}
+              <button
+                onClick={() => setSelectedCard(null)}
+                className="fixed top-4 right-4 bg-gray-700 hover:bg-gray-600 text-white p-2 md:p-1.5 rounded-full transition-colors z-[130] shadow-lg"
+                aria-label="Close"
+              >
+                <X size={24} className="md:w-5 md:h-5" />
+              </button>
+
+              <div className="p-4 sm:p-6">
+
+                {/* Card Image */}
+                <div className="relative mb-4 max-w-sm mx-auto">
+                  <img
+                    src={getCardLargeImageUri(selectedCard.card, currentFaceIndex)}
+                    alt={displayName}
+                    className="w-full h-auto rounded-lg shadow-lg"
+                  />
+                  {isMultiFaced && (
+                    <>
+                      <div className="absolute top-2 right-2 bg-purple-600 text-white text-xs font-bold px-2 py-1 rounded-full shadow-lg">
+                        Face {currentFaceIndex + 1}/{selectedCard.card.card_faces!.length}
+                      </div>
+                      <button
+                        onClick={() => toggleCardFace(selectedCard.card.id, selectedCard.card.card_faces!.length)}
+                        className="absolute bottom-2 right-2 bg-purple-600 hover:bg-purple-700 text-white p-2 rounded-full shadow-lg transition-all"
+                        title="Flip card"
+                      >
+                        <RefreshCw size={20} />
+                      </button>
+                    </>
+                  )}
+                </div>
+
+                {/* Card Info */}
+                <div className="space-y-4">
+                  <div>
+                    <h2 className="text-xl md:text-2xl font-bold text-white mb-2">{displayName}</h2>
+                    <p className="text-xs sm:text-sm text-gray-400">{displayTypeLine}</p>
+                  </div>
+
+                  {displayOracleText && (
+                    <div className="border-t border-gray-700 pt-3">
+                      <p className="text-sm text-gray-300">{displayOracleText}</p>
+                    </div>
+                  )}
+
+                  {selectedCard.card.prices?.usd && (
+                    <div className="border-t border-gray-700 pt-3">
+                      <div className="text-lg text-green-400 font-semibold">
+                        ${selectedCard.card.prices.usd} each
+                      </div>
+                      <div className="text-sm text-gray-400">
+                        Total value: ${(parseFloat(selectedCard.card.prices.usd) * selectedCard.quantity).toFixed(2)}
+                      </div>
+                    </div>
+                  )}
+
+                  {/* Quantity Management */}
+                  <div className="border-t border-gray-700 pt-3">
+                    <h3 className="text-lg font-semibold mb-3">Quantity in Collection</h3>
+                    <div className="flex items-center justify-between bg-gray-900 rounded-lg p-4">
+                      <button
+                        onClick={() => decrementQuantity(selectedCard.card.id, selectedCard.quantity)}
+                        disabled={isUpdating || selectedCard.quantity === 0}
+                        className="bg-red-600 hover:bg-red-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white p-2 rounded-lg transition-colors"
+                      >
+                        <Minus size={20} />
+                      </button>
+
+                      <div className="text-center">
+                        <div className="text-3xl font-bold">{selectedCard.quantity}</div>
+                        <div className="text-xs text-gray-400">copies</div>
+                      </div>
+
+                      <button
+                        onClick={() => incrementQuantity(selectedCard.card.id, selectedCard.quantity)}
+                        disabled={isUpdating}
+                        className="bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white p-2 rounded-lg transition-colors"
+                      >
+                        <Plus size={20} />
+                      </button>
+                    </div>
+
+                    {/* Remove from collection button */}
+                    <button
+                      onClick={() => {
+                        setConfirmModal({
+                          isOpen: true,
+                          cardId: selectedCard.card.id,
+                          cardName: displayName,
+                        });
+                      }}
+                      disabled={isUpdating}
+                      className="w-full mt-3 min-h-[44px] px-4 py-2 bg-red-600 hover:bg-red-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white rounded-lg flex items-center justify-center gap-2 transition-colors"
+                    >
+                      <Trash2 size={20} />
+                      Remove from Collection
+                    </button>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </>
+        );
+      })()}
+
+      {/* Confirm Modal */}
+      <ConfirmModal
+        isOpen={confirmModal.isOpen}
+        onClose={() => setConfirmModal({ isOpen: false, cardId: '', cardName: '' })}
+        onConfirm={() => {
+          updateCardQuantity(confirmModal.cardId, 0);
+          setConfirmModal({ isOpen: false, cardId: '', cardName: '' });
+        }}
+        title="Remove from Collection"
+        message={`Are you sure you want to remove "${confirmModal.cardName}" from your collection? This action cannot be undone.`}
+        confirmText="Remove"
+        cancelText="Cancel"
+        variant="danger"
+        isLoading={isUpdating}
+      />
+
+      {/* Snackbar */}
+      {snackbar && (
+        <div
+          className={`fixed bottom-4 right-4 p-4 rounded-lg shadow-lg transition-all duration-300 ${
+            snackbar.type === 'success' ? 'bg-green-500' : 'bg-red-500'
+          } text-white z-[140]`}
+        >
+          <div className="flex items-center justify-between">
+            <div className="flex items-center">
+              {snackbar.type === 'success' ? (
+                <CheckCircle className="mr-2" size={20} />
+              ) : (
+                <XCircle className="mr-2" size={20} />
+              )}
+              <span>{snackbar.message}</span>
+            </div>
+            <button onClick={() => setSnackbar(null)} className="ml-4 text-gray-200 hover:text-white focus:outline-none">
+              <Trash2 size={16} />
+            </button>
+          </div>
+        </div>
+      )}
+    </div>
+  );
 }

src/components/ConfirmModal.tsx

@@ -0,0 +1,105 @@
+import React from 'react';
+import { AlertCircle, CheckCircle, Trash2, AlertTriangle } from 'lucide-react';
+import Modal from './Modal';
+
+interface ConfirmModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+  title: string;
+  message: string;
+  confirmText?: string;
+  cancelText?: string;
+  variant?: 'danger' | 'warning' | 'info' | 'success';
+  isLoading?: boolean;
+}
+
+export default function ConfirmModal({
+  isOpen,
+  onClose,
+  onConfirm,
+  title,
+  message,
+  confirmText = 'Confirm',
+  cancelText = 'Cancel',
+  variant = 'danger',
+  isLoading = false,
+}: ConfirmModalProps) {
+  const handleConfirm = () => {
+    onConfirm();
+    if (!isLoading) {
+      onClose();
+    }
+  };
+
+  const variantConfig = {
+    danger: {
+      icon: Trash2,
+      iconColor: 'text-red-500',
+      iconBg: 'bg-red-500/10',
+      buttonColor: 'bg-red-600 hover:bg-red-700',
+    },
+    warning: {
+      icon: AlertTriangle,
+      iconColor: 'text-yellow-500',
+      iconBg: 'bg-yellow-500/10',
+      buttonColor: 'bg-yellow-600 hover:bg-yellow-700',
+    },
+    info: {
+      icon: AlertCircle,
+      iconColor: 'text-blue-500',
+      iconBg: 'bg-blue-500/10',
+      buttonColor: 'bg-blue-600 hover:bg-blue-700',
+    },
+    success: {
+      icon: CheckCircle,
+      iconColor: 'text-green-500',
+      iconBg: 'bg-green-500/10',
+      buttonColor: 'bg-green-600 hover:bg-green-700',
+    },
+  };
+
+  const config = variantConfig[variant];
+  const Icon = config.icon;
+
+  return (
+    <Modal isOpen={isOpen} onClose={onClose} size="sm" showCloseButton={false}>
+      <div className="p-6">
+        {/* Icon */}
+        <div className="flex items-center justify-center mb-4">
+          <div className={`${config.iconBg} p-3 rounded-full`}>
+            <Icon className={config.iconColor} size={32} />
+          </div>
+        </div>
+
+        {/* Title */}
+        <h2 className="text-xl font-bold text-white text-center mb-2">
+          {title}
+        </h2>
+
+        {/* Message */}
+        <p className="text-gray-400 text-center mb-6">
+          {message}
+        </p>
+
+        {/* Buttons */}
+        <div className="flex gap-3">
+          <button
+            onClick={onClose}
+            disabled={isLoading}
+            className="flex-1 px-4 py-2 bg-gray-700 hover:bg-gray-600 disabled:bg-gray-600 disabled:cursor-not-allowed text-white rounded-lg transition-colors"
+          >
+            {cancelText}
+          </button>
+          <button
+            onClick={handleConfirm}
+            disabled={isLoading}
+            className={`flex-1 px-4 py-2 ${config.buttonColor} disabled:bg-gray-600 disabled:cursor-not-allowed text-white rounded-lg transition-colors`}
+          >
+            {isLoading ? 'Loading...' : confirmText}
+          </button>
+        </div>
+      </div>
+    </Modal>
+  );
+}

src/components/DeckBuilder.tsx

@@ -31,7 +31,7 @@ export default function DeckBuilder({
                 initial={{ x: "100%" }}
                 animate={{ x: isOpen ? "0%" : "100%" }}
                 transition={{ type: "spring", stiffness: 300, damping: 30 }}
-                className="fixed top-0 right-0 w-4/5 h-full bg-gray-800 p-6 shadow-lg md:static md:w-full md:h-auto md:p-6 md:shadow-none z-50"
+                className="fixed top-0 right-0 w-4/5 h-full bg-gray-800 p-6 shadow-lg md:static md:w-full md:h-auto md:p-6 md:shadow-none z-[110]"
             >
                 {/* Bouton de fermeture */}
                 <button

src/components/DeckCard.tsx

@@ -1,7 +1,6 @@
 import React from 'react';
 import { AlertTriangle, Check, Edit } from 'lucide-react';
 import { Deck } from '../types';
-import { validateDeck } from '../utils/deckValidation';
 
 interface DeckCardProps {
   deck: Deck;
@@ -9,55 +8,53 @@ interface DeckCardProps {
 }
 
 export default function DeckCard({ deck, onEdit }: DeckCardProps) {
+  // Use pre-calculated validation data
+  const isValid = deck.isValid ?? true;
+  const validationErrors = deck.validationErrors || [];
 
-  if(deck.id === "410ed539-a8f4-4bc4-91f1-6c113b9b7e25"){
-    console.log("deck", deck.name);
-    console.log("cardEntities", deck.cards);
-  }
-
-  const validation = validateDeck(deck);
-  const commander = deck.format === 'commander' ? deck.cards.find(card => 
-    card.is_commander
-  )?.card : null;
+  // Use cover card (already loaded)
+  const coverImage = deck.coverCard?.image_uris?.normal;
 
   return (
     <div
-      className="bg-gray-800 rounded-xl overflow-hidden shadow-lg card-hover cursor-pointer animate-scale-in"
+      className="bg-gray-800 rounded-lg overflow-hidden shadow-lg hover:shadow-xl transition-all cursor-pointer group"
       onClick={() => onEdit?.(deck.id)}
     >
-      <div className="relative h-48 overflow-hidden">
+      {/* Full Card Art */}
+      <div className="relative aspect-[5/7] overflow-hidden">
+        {coverImage ? (
           <img
-          src={commander?.image_uris?.normal || deck.cards[0]?.card.image_uris?.normal}
-          alt={commander?.name || deck.cards[0]?.card.name}
-          className="w-full object-cover object-top transform translate-y-[-12%]"
+            src={coverImage}
+            alt={deck.coverCard?.name || deck.name}
+            className="w-full h-full object-cover group-hover:scale-105 transition-transform duration-300"
           />
-        <div className="absolute inset-0 bg-gradient-to-t from-gray-900 to-transparent" />
-      </div>
-      
-      <div className="p-4">
-        <div className="flex items-center justify-between mb-2">
-          <h3 className="text-xl font-bold text-white">{deck.name}</h3>
-          {validation.isValid ? (
-            <div className="flex items-center text-green-400">
-              <Check size={16} className="mr-1" />
-              <span className="text-sm">Legal</span>
-            </div>
         ) : (
-            <div className="flex items-center text-yellow-400" title={validation.errors.join(', ')}>
-              <AlertTriangle size={16} className="mr-1" />
-              <span className="text-sm">Issues</span>
+          <div className="w-full h-full bg-gray-700 flex items-center justify-center text-gray-500">
+            No Cover
           </div>
         )}
+        {/* Overlay for text readability */}
+        <div className="absolute inset-0 bg-gradient-to-t from-gray-900 via-gray-900/60 to-transparent" />
+
+        {/* Deck info overlay */}
+        <div className="absolute bottom-0 left-0 right-0 p-3">
+          <div className="flex items-start justify-between mb-1">
+            <h3 className="text-base sm:text-lg font-bold text-white line-clamp-2 flex-1">{deck.name}</h3>
+            {isValid ? (
+              <Check size={16} className="text-green-400 ml-2 flex-shrink-0" />
+            ) : (
+              <AlertTriangle size={16} className="text-yellow-400 ml-2 flex-shrink-0" title={validationErrors.join(', ')} />
+            )}
           </div>
 
-        <div className="flex items-center justify-between text-sm text-gray-400">
+          <div className="flex items-center justify-between text-xs text-gray-300 mb-2">
             <span className="capitalize">{deck.format}</span>
-          <span>{deck.cards.reduce((acc, curr) => acc + curr.quantity, 0)} cards</span>
+            <span>{deck.cardCount || 0} cards</span>
           </div>
 
-        {commander && (
-          <div className="mt-2 text-sm text-gray-300">
-            <span className="text-blue-400">Commander:</span> {commander.name}
+          {deck.format === 'commander' && deck.coverCard && (
+            <div className="text-xs text-blue-300 mb-2 truncate">
+              <span className="font-semibold">Commander:</span> {deck.coverCard.name}
             </div>
           )}
 
@@ -66,12 +63,13 @@ export default function DeckCard({ deck, onEdit }: DeckCardProps) {
               e.stopPropagation();
               onEdit?.(deck.id);
             }}
-          className="mt-4 w-full px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center justify-center gap-2 text-white btn-ripple transition-smooth glow-on-hover"
+            className="w-full min-h-[36px] px-3 py-2 bg-blue-600/90 hover:bg-blue-600 rounded-md flex items-center justify-center gap-2 text-white text-sm font-medium transition-colors backdrop-blur-sm"
           >
-          <Edit size={20} />
-          Edit Deck
+            <Edit size={16} />
+            <span>Edit</span>
           </button>
         </div>
       </div>
+    </div>
   );
 }

src/components/DeckEditor.tsx

@@ -42,6 +42,7 @@ export default function DeckEditor({ deckId, onClose }: DeckEditorProps) {
         const cards = cardEntities.map(entity => ({
           card: scryfallCards.find(c => c.id === entity.card_id) as Card,
           quantity: entity.quantity,
+          is_commander: entity.is_commander,
         }));
 
         setDeck({
@@ -62,7 +63,7 @@ export default function DeckEditor({ deckId, onClose }: DeckEditorProps) {
 
   if (loading) {
     return (
-      <div className="min-h-screen bg-gray-900 text-white p-6 flex items-center justify-center">
+      <div className="relative md:min-h-screen bg-gray-900 text-white p-6 flex items-center justify-center">
         <div className="animate-spin rounded-full h-32 w-32 border-t-2 border-b-2 border-blue-500"></div>
       </div>
     );
@@ -70,7 +71,7 @@ export default function DeckEditor({ deckId, onClose }: DeckEditorProps) {
 
   if (!deck) {
     return (
-      <div className="min-h-screen bg-gray-900 text-white p-6">
+      <div className="relative md:min-h-screen bg-gray-900 text-white p-6">
         <div className="max-w-7xl mx-auto">
           <div className="bg-red-500/10 border border-red-500 rounded-lg p-4">
             <h2 className="text-xl font-bold text-red-500">Error</h2>

src/components/DeckList.tsx

@@ -3,12 +3,15 @@ import { getCardById, getCardsByIds } from '../services/api';
 import { Deck } from '../types';
 import { supabase } from "../lib/supabase";
 import DeckCard from "./DeckCard";
+import { PlusCircle } from 'lucide-react';
+import MigrateDeckButton from "./MigrateDeckButton.tsx";
 
 interface DeckListProps {
   onDeckEdit?: (deckId: string) => void;
+  onCreateDeck?: () => void;
 }
 
-const DeckList = ({ onDeckEdit }: DeckListProps) => {
+const DeckList = ({ onDeckEdit, onCreateDeck }: DeckListProps) => {
   const [decks, setDecks] = useState<Deck[]>([]);
   const [loading, setLoading] = useState(true);
 
@@ -21,58 +24,36 @@ const DeckList = ({ onDeckEdit }: DeckListProps) => {
         return;
       }
 
-      const decksWithCards = await Promise.all(decksData.map(async (deck) => {
-        const { data: cardEntities, error: cardsError } = await supabase
-          .from('deck_cards')
-          .select('*')
-          .eq('deck_id', deck.id);
+      // Get all unique cover card IDs
+      const coverCardIds = decksData
+        .map(deck => deck.cover_card_id)
+        .filter(Boolean);
 
+      // Fetch only cover cards (much lighter!)
+      const coverCards = coverCardIds.length > 0
+        ? await getCardsByIds(coverCardIds)
+        : [];
 
-
-        if (cardsError) {
-          console.error(`Error fetching cards for deck ${deck.id}:`, cardsError);
-          return { ...deck, cards: [] };
-        }
-
-        const cardIds = cardEntities.map((entity) => entity.card_id);
-        const uniqueCardIds = [...new Set(cardIds)];
-
-        if(deck.id === "410ed539-a8f4-4bc4-91f1-6c113b9b7e25"){
-          console.log("uniqueCardIds", uniqueCardIds);
-        }
-
-
-
-        try {
-          const scryfallCards = await getCardsByIds(uniqueCardIds);
-
-          if (!scryfallCards) {
-            console.error("scryfallCards is undefined after getCardsByIds");
-            return { ...deck, cards: [] };
-          }
-
-          const cards = cardEntities.map((entity) => {
-            const card = scryfallCards.find((c) => c.id === entity.card_id);
-            return {
-              card,
-              quantity: entity.quantity,
-              is_commander: entity.is_commander,
-            };
-          });
+      // Map decks with their cover cards
+      const decksWithCoverCards = decksData.map(deck => {
+        const coverCard = deck.cover_card_id
+          ? coverCards.find(c => c.id === deck.cover_card_id)
+          : null;
 
         return {
           ...deck,
-            cards,
+          cards: [], // Empty array, we don't load all cards here
+          coverCard: coverCard || null,
           createdAt: new Date(deck.created_at),
           updatedAt: new Date(deck.updated_at),
+          validationErrors: deck.validation_errors || [],
+          isValid: deck.is_valid ?? true,
+          cardCount: deck.card_count || 0,
+          coverCardId: deck.cover_card_id,
         };
-        } catch (error) {
-          console.error("Error fetching cards from Scryfall:", error);
-          return { ...deck, cards: [] };
-        }
-      }));
+      });
 
-      setDecks(decksWithCards);
+      setDecks(decksWithCoverCards);
       setLoading(false);
     };
 
@@ -88,10 +69,26 @@ const DeckList = ({ onDeckEdit }: DeckListProps) => {
   }
 
   return (
-    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+    <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6 gap-3 sm:gap-4">
       {decks.map((deck) => (
         <DeckCard key={deck.id} deck={deck} onEdit={onDeckEdit} />
       ))}
+
+      {/* Create New Deck Card */}
+      <button
+        onClick={onCreateDeck}
+        className="rounded-lg overflow-hidden shadow-lg hover:shadow-xl border-2 border-dashed border-gray-600 hover:border-blue-500 transition-all duration-300 hover:scale-105 cursor-pointer group aspect-[5/7] flex flex-col items-center justify-center gap-3 p-4"
+      >
+        <PlusCircle size={48} className="text-gray-600 group-hover:text-blue-500 transition-colors" />
+        <div className="text-center">
+          <h3 className="text-sm sm:text-base font-bold text-gray-400 group-hover:text-blue-400 transition-colors">
+            Create New Deck
+          </h3>
+          <p className="text-xs text-gray-500 mt-1 hidden sm:block">
+            Start building
+          </p>
+        </div>
+      </button>
     </div>
   );
 };

src/components/DeckManager.tsx

@@ -1,49 +1,46 @@
 import React, { useState, useEffect } from 'react';
-import { Plus, Search, Save, Trash2, Upload, Loader2, CheckCircle, XCircle } from 'lucide-react';
+import { Plus, Minus, Search, Save, Trash2, Loader2, CheckCircle, XCircle, AlertCircle, PackagePlus, RefreshCw, X } from 'lucide-react';
 import { Card, Deck } from '../types';
-import { searchCards } from '../services/api';
+import { searchCards, getUserCollection, addCardToCollection, addMultipleCardsToCollection } from '../services/api';
 import { useAuth } from '../contexts/AuthContext';
 import { supabase } from '../lib/supabase';
 import { validateDeck } from '../utils/deckValidation';
 import MagicCard from './MagicCard';
+import { ManaCost, ManaSymbol } from './ManaCost';
 
 interface DeckManagerProps {
   initialDeck?: Deck;
   onSave?: () => void;
 }
 
-const calculateManaCurve = (cards: { card; quantity: number }[]) => {
-  const manaValues = cards.map(({ card }) => {
-    if (!card.mana_cost) return 0;
-    // Basic heuristic: count mana symbols
-    return (card.mana_cost.match(/\{WUBRG0-9]\}/g) || []).length;
-  });
+// const calculateManaCurve = (cards: { card; quantity: number }[]) => {
+//   const manaValues = cards.map(({ card }) => {
+//     if (!card.mana_cost) return 0;
+//     // Basic heuristic: count mana symbols
+//     return (card.mana_cost.match(/\{WUBRG0-9]\}/g) || []).length;
+//   });
 
-  const averageManaValue = manaValues.reduce((a, b) => a + b, 0) / manaValues.length;
-  return averageManaValue;
-};
+//   const averageManaValue = manaValues.reduce((a, b) => a + b, 0) / manaValues.length;
+//   return averageManaValue;
+// };
 
 const suggestLandCountAndDistribution = (
   cards: { card; quantity: number }[],
-  format: string
+  format: string,
+  commanderColors: string[] = []
 ) => {
   const formatRules = {
-    standard: { minCards: 60, targetLands: 24.5 },
-    modern: { minCards: 60, targetLands: 24.5 },
-    commander: { minCards: 100, targetLands: 36.5 },
-    legacy: { minCards: 60, targetLands: 24.5 },
-    vintage: { minCards: 60, targetLands: 24.5 },
-    pauper: { minCards: 60, targetLands: 24.5 },
+    standard: { minCards: 60 },
+    modern: { minCards: 60 },
+    commander: { minCards: 100 },
+    legacy: { minCards: 60 },
+    vintage: { minCards: 60 },
+    pauper: { minCards: 60 },
   };
 
-  const { minCards, targetLands } =
+  const { minCards } =
     formatRules[format as keyof typeof formatRules] || formatRules.standard;
   const deckSize = cards.reduce((acc, { quantity }) => acc + quantity, 0);
-  const nonLandCards = cards.reduce(
-    (acc, { card, quantity }) =>
-      card.type_line?.toLowerCase().includes('land') ? acc : acc + quantity,
-    0
-  );
   const landsToAdd = Math.max(0, minCards - deckSize);
 
   const colorCounts = { W: 0, U: 0, B: 0, R: 0, G: 0 };
@@ -68,6 +65,16 @@ const suggestLandCountAndDistribution = (
     }
   });
 
+  // For commander, filter out colors not in commander's color identity
+  if (format === 'commander' && commanderColors.length > 0) {
+    for (const color in colorCounts) {
+      if (!commanderColors.includes(color)) {
+        totalColorSymbols -= colorCounts[color as keyof typeof colorCounts];
+        colorCounts[color as keyof typeof colorCounts] = 0;
+      }
+    }
+  }
+
   const landDistribution: { [key: string]: number } = {};
   for (const color in colorCounts) {
     const proportion =
@@ -77,7 +84,7 @@ const suggestLandCountAndDistribution = (
     landDistribution[color] = Math.round(landsToAdd * proportion);
   }
 
-  let totalDistributed = Object.values(landDistribution).reduce(
+  const totalDistributed = Object.values(landDistribution).reduce(
     (acc, count) => acc + count,
     0
   );
@@ -100,9 +107,25 @@ const suggestLandCountAndDistribution = (
   return { landCount: landsToAdd, landDistribution };
 };
 
+// Get commander color identity
+const getCommanderColors = (commander: Card | null): string[] => {
+  if (!commander) return [];
+  return commander.colors || [];
+};
+
+// Check if a card's colors are valid for the commander
+const isCardValidForCommander = (card: Card, commanderColors: string[]): boolean => {
+  if (commanderColors.length === 0) return true; // No commander restriction
+  const cardColors = card.colors || [];
+  // Every color in the card must be in the commander's colors
+  return cardColors.every(color => commanderColors.includes(color));
+};
+
 export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
+  const [currentDeckId, setCurrentDeckId] = useState<string | null>(initialDeck?.id || null);
   const [searchQuery, setSearchQuery] = useState('');
   const [searchResults, setSearchResults] = useState<Card[]>([]);
+  const [isSearching, setIsSearching] = useState(false);
   const [selectedCards, setSelectedCards] = useState<{
     card: Card;
     quantity: number;
@@ -120,15 +143,171 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
   const [isSaving, setIsSaving] = useState(false);
   const [snackbar, setSnackbar] = useState<{ message: string; type: 'success' | 'error' } | null>(null);
 
+  // Collection management state
+  const [userCollection, setUserCollection] = useState<Map<string, number>>(new Map());
+  const [isLoadingCollection, setIsLoadingCollection] = useState(true);
+  const [addingCardId, setAddingCardId] = useState<string | null>(null);
+  const [isAddingAll, setIsAddingAll] = useState(false);
+  const [cardFaceIndex, setCardFaceIndex] = useState<Map<string, number>>(new Map());
+  const [hoveredCard, setHoveredCard] = useState<Card | null>(null);
+  const [hoverSource, setHoverSource] = useState<'search' | 'deck' | null>(null);
+  const [selectedCard, setSelectedCard] = useState<Card | null>(null);
+
+  // Load user collection on component mount
+  useEffect(() => {
+    const loadUserCollection = async () => {
+      if (!user) return;
+
+      try {
+        setIsLoadingCollection(true);
+        const collection = await getUserCollection(user.id);
+        setUserCollection(collection);
+      } catch (error) {
+        console.error('Error loading user collection:', error);
+        setSnackbar({ message: 'Failed to load collection', type: 'error' });
+      } finally {
+        setIsLoadingCollection(false);
+      }
+    };
+
+    loadUserCollection();
+  }, [user]);
+
+  // Helper functions for double-faced cards
+  const isDoubleFaced = (card: Card) => {
+    const backFaceLayouts = ['transform', 'modal_dfc', 'double_faced_token', 'reversible_card'];
+    return card.card_faces && card.card_faces.length > 1 && backFaceLayouts.includes(card.layout);
+  };
+
+  const getCurrentFaceIndex = (cardId: string) => {
+    return cardFaceIndex.get(cardId) || 0;
+  };
+
+  const toggleCardFace = (cardId: string, totalFaces: number) => {
+    setCardFaceIndex(prev => {
+      const newMap = new Map(prev);
+      const currentIndex = prev.get(cardId) || 0;
+      const nextIndex = (currentIndex + 1) % totalFaces;
+      newMap.set(cardId, nextIndex);
+      return newMap;
+    });
+  };
+
+  const getCardImageUri = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.normal || card.card_faces[faceIndex]?.image_uris?.small;
+    }
+    return card.image_uris?.normal || card.image_uris?.small || card.card_faces?.[0]?.image_uris?.normal;
+  };
+
+  const getCardLargeImageUri = (card: Card, faceIndex: number = 0) => {
+    if (isDoubleFaced(card) && card.card_faces) {
+      return card.card_faces[faceIndex]?.image_uris?.large || card.card_faces[faceIndex]?.image_uris?.normal;
+    }
+    return card.image_uris?.large || card.image_uris?.normal;
+  };
+
+  // Helper function to check if a card is in the collection
+  const isCardInCollection = (cardId: string, requiredQuantity: number = 1): boolean => {
+    const ownedQuantity = userCollection.get(cardId) || 0;
+    return ownedQuantity >= requiredQuantity;
+  };
+
+  // Helper function to get missing cards
+  const getMissingCards = () => {
+    return selectedCards.filter(({ card, quantity }) => {
+      return !isCardInCollection(card.id, quantity);
+    });
+  };
+
+  // Add single card to collection
+  const handleAddCardToCollection = async (cardId: string, quantity: number) => {
+    if (!user) return;
+
+    try {
+      setAddingCardId(cardId);
+      await addCardToCollection(user.id, cardId, quantity);
+
+      // Update local collection state
+      setUserCollection(prev => {
+        const newMap = new Map(prev);
+        const currentQty = newMap.get(cardId) || 0;
+        newMap.set(cardId, currentQty + quantity);
+        return newMap;
+      });
+
+      setSnackbar({ message: 'Card added to collection!', type: 'success' });
+    } catch (error) {
+      console.error('Error adding card to collection:', error);
+      setSnackbar({ message: 'Failed to add card to collection', type: 'error' });
+    } finally {
+      setAddingCardId(null);
+      setTimeout(() => setSnackbar(null), 3000);
+    }
+  };
+
+  // Add all missing cards to collection
+  const handleAddAllMissingCards = async () => {
+    if (!user) return;
+
+    const missingCards = getMissingCards();
+    if (missingCards.length === 0) {
+      setSnackbar({ message: 'All cards are already in your collection!', type: 'success' });
+      setTimeout(() => setSnackbar(null), 3000);
+      return;
+    }
+
+    try {
+      setIsAddingAll(true);
+
+      const cardsToAdd = missingCards.map(({ card, quantity }) => {
+        const ownedQuantity = userCollection.get(card.id) || 0;
+        const neededQuantity = Math.max(0, quantity - ownedQuantity);
+        return {
+          cardId: card.id,
+          quantity: neededQuantity,
+        };
+      }).filter(c => c.quantity > 0);
+
+      await addMultipleCardsToCollection(user.id, cardsToAdd);
+
+      // Update local collection state
+      setUserCollection(prev => {
+        const newMap = new Map(prev);
+        cardsToAdd.forEach(({ cardId, quantity }) => {
+          const currentQty = newMap.get(cardId) || 0;
+          newMap.set(cardId, currentQty + quantity);
+        });
+        return newMap;
+      });
+
+      setSnackbar({
+        message: `Successfully added ${cardsToAdd.length} card(s) to collection!`,
+        type: 'success'
+      });
+    } catch (error) {
+      console.error('Error adding cards to collection:', error);
+      setSnackbar({ message: 'Failed to add cards to collection', type: 'error' });
+    } finally {
+      setIsAddingAll(false);
+      setTimeout(() => setSnackbar(null), 3000);
+    }
+  };
+
   const handleSearch = async (e: React.FormEvent) => {
     e.preventDefault();
     if (!searchQuery.trim()) return;
 
+    setIsSearching(true);
     try {
       const cards = await searchCards(searchQuery);
-      setSearchResults(cards);
+      setSearchResults(cards || []);
     } catch (error) {
       console.error('Failed to search cards:', error);
+      setSearchResults([]);
+      setSnackbar({ message: 'Failed to search cards', type: 'error' });
+    } finally {
+      setIsSearching(false);
     }
   };
 
@@ -162,12 +341,6 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
     setSelectedCards(prev => {
       return prev.map(c => {
         if (c.card.id === cardId) {
-          const isBasicLand =
-            c.card.name === 'Plains' ||
-            c.card.name === 'Island' ||
-            c.card.name === 'Swamp' ||
-            c.card.name === 'Mountain' ||
-            c.card.name === 'Forest';
           return { ...c, quantity: quantity };
         }
         return c;
@@ -180,8 +353,9 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
 
     setIsSaving(true);
     try {
+      const deckId = currentDeckId || crypto.randomUUID();
       const deckToSave: Deck = {
-        id: initialDeck?.id || crypto.randomUUID(),
+        id: deckId,
         name: deckName,
         format: deckFormat,
         cards: selectedCards,
@@ -190,8 +364,17 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
         updatedAt: new Date(),
       };
 
+      // Calculate validation for storage
       const validation = validateDeck(deckToSave);
 
+      // Determine cover card (commander or first card)
+      const commanderCard = deckFormat === 'commander' ? selectedCards.find(c => c.card.id === commander?.id) : null;
+      const coverCard = commanderCard?.card || selectedCards[0]?.card;
+      const coverCardId = coverCard?.id || null;
+
+      // Calculate total card count
+      const totalCardCount = selectedCards.reduce((acc, curr) => acc + curr.quantity, 0);
+
       const deckData = {
         id: deckToSave.id,
         name: deckToSave.name,
@@ -199,6 +382,10 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
         user_id: deckToSave.userId,
         created_at: deckToSave.createdAt,
         updated_at: deckToSave.updatedAt,
+        cover_card_id: coverCardId,
+        validation_errors: validation.errors,
+        is_valid: validation.isValid,
+        card_count: totalCardCount,
       };
 
       // Save or update the deck
@@ -209,9 +396,14 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
 
       if (deckError) throw deckError;
 
+      // Update current deck ID if this was a new deck
+      if (!currentDeckId) {
+        setCurrentDeckId(deckId);
+      }
+
       // Delete existing cards if updating
-      if (initialDeck) {
-        await supabase.from('deck_cards').delete().eq('deck_id', initialDeck.id);
+      if (currentDeckId) {
+        await supabase.from('deck_cards').delete().eq('deck_id', currentDeckId);
       }
 
       // Save the deck cards
@@ -251,11 +443,14 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
 
   const validation = validateDeck(currentDeck);
 
+  // Commander color identity validation (for land suggestions)
+  const commanderColors = deckFormat === 'commander' ? getCommanderColors(commander) : [];
+
   const deckSize = selectedCards.reduce((acc, curr) => acc + curr.quantity, 0);
   const {
     landCount: suggestedLandCountValue,
     landDistribution: suggestedLands,
-  } = suggestLandCountAndDistribution(selectedCards, deckFormat);
+  } = suggestLandCountAndDistribution(selectedCards, deckFormat, commanderColors);
 
   const totalPrice = selectedCards.reduce((acc, { card, quantity }) => {
     const isBasicLand =
@@ -328,11 +523,11 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
               cardsToAdd.push({ card, quantity });
             } else {
               console.warn(`Card not found: ${cardName}`);
-              alert(`Card not found: ${cardName}`);
+              setSnackbar({ message: `Card not found: ${cardName}`, type: 'error' });
             }
           } catch (error) {
             console.error(`Failed to search card ${cardName}:`, error);
-            alert(`Failed to search card ${cardName}: ${error}`);
+            setSnackbar({ message: `Failed to import card: ${cardName}`, type: 'error' });
           }
         }
 
@@ -362,53 +557,188 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
   };
 
   return (
-    <div className="min-h-screen bg-gray-900 text-white p-6">
+    <div className="relative bg-gray-900 text-white p-3 sm:p-6 pt-6 pb-44 md:pt-20 md:pb-6 md:min-h-screen">
       <div className="max-w-7xl mx-auto">
-        <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
+        <div className="grid grid-cols-1 lg:grid-cols-3 gap-4 sm:gap-6">
           {/* Card Search Section */}
           <div className="lg:col-span-2 space-y-6">
-            <form onSubmit={handleSearch} className="flex gap-2">
-              <div className="relative flex-1">
-                <Search
-                  className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400"
-                  size={20}
-                />
+            {/* Mobile-First Search Bar */}
+            <form onSubmit={handleSearch} className="relative">
+              <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" size={20} />
               <input
                 type="text"
                 value={searchQuery}
                 onChange={e => setSearchQuery(e.target.value)}
-                  className="w-full pl-10 pr-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
-                  placeholder="Search for cards..."
+                className="w-full pl-10 pr-24 py-3 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 text-white"
+                placeholder="Rechercher une carte..."
               />
-              </div>
+              {searchQuery && (
+                <button
+                  type="button"
+                  onClick={() => {
+                    setSearchQuery('');
+                    setSearchResults([]);
+                  }}
+                  className="absolute right-14 top-1/2 transform -translate-y-1/2 text-gray-400 hover:text-white"
+                >
+                  <XCircle size={20} />
+                </button>
+              )}
               <button
                 type="submit"
-                className="px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center gap-2"
+                className="absolute right-2 top-1/2 transform -translate-y-1/2 p-2 bg-blue-600 hover:bg-blue-700 rounded-md"
               >
                 <Search size={20} />
-                Search
               </button>
             </form>
 
-            <div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
-              {searchResults.map(card => (
+            {/* Vertical Card List for Mobile */}
+            <div className="space-y-2">
+              {isSearching ? (
+                <div className="flex items-center justify-center py-12">
+                  <Loader2 className="animate-spin text-blue-500" size={48} />
+                </div>
+              ) : searchResults.length === 0 && searchQuery ? (
+                <div className="text-center py-12 text-gray-400">
+                  <p className="text-lg mb-2">No cards found</p>
+                  <p className="text-sm">Try a different search term</p>
+                </div>
+              ) : (
+                searchResults.map(card => {
+                const currentFaceIndex = getCurrentFaceIndex(card.id);
+                const isMultiFaced = isDoubleFaced(card);
+                const inCollection = userCollection.get(card.id) || 0;
+                const isAddingThisCard = addingCardId === card.id;
+                const cardInDeck = selectedCards.find(c => c.card.id === card.id);
+                const quantityInDeck = cardInDeck?.quantity || 0;
+
+                const displayName = isMultiFaced && card.card_faces
+                  ? card.card_faces[currentFaceIndex]?.name || card.name
+                  : card.name;
+
+                const isValidForCommander = deckFormat !== 'commander' || !commander || isCardValidForCommander(card, commanderColors);
+
+                return (
                   <div
                     key={card.id}
-                  className="bg-gray-800 rounded-lg overflow-hidden hover:ring-2 hover:ring-blue-500 transition-all"
+                    className={`bg-gray-800 rounded-lg p-3 flex items-center gap-3 hover:bg-gray-750 transition-colors cursor-pointer ${
+                      !isValidForCommander ? 'border border-yellow-500/50' : ''
+                    }`}
+                    onMouseEnter={() => {
+                      setHoveredCard(card);
+                      setHoverSource('search');
+                    }}
+                    onMouseLeave={() => {
+                      setHoveredCard(null);
+                      setHoverSource(null);
+                    }}
+                    onClick={() => setSelectedCard(card)}
                   >
-                  <MagicCard card={card} />
-                  <div className="p-4">
-                    <h3 className="font-bold mb-2">{card.name}</h3>
+                    {/* Card Thumbnail */}
+                    <div className="relative flex-shrink-0 w-16 h-22 rounded overflow-hidden"
+                         onClick={(e) => e.stopPropagation()}>
+                      {getCardImageUri(card, currentFaceIndex) ? (
+                        <img
+                          src={getCardImageUri(card, currentFaceIndex)}
+                          alt={displayName}
+                          className="w-full h-full object-cover"
+                        />
+                      ) : (
+                        <div className="w-full h-full bg-gray-700" />
+                      )}
+                      {isMultiFaced && (
+                        <button
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            toggleCardFace(card.id, card.card_faces!.length);
+                          }}
+                          className="absolute bottom-0 right-0 bg-purple-600 text-white p-1 rounded-tl"
+                        >
+                          <RefreshCw size={10} />
+                        </button>
+                      )}
+                    </div>
+
+                    {/* Card Info */}
+                    <div className="flex-1 min-w-0">
+                      <h3 className="font-medium text-sm truncate">{displayName}</h3>
+                      <div className="flex items-center gap-2 mt-1">
+                        {card.mana_cost && (
+                          <ManaCost cost={card.mana_cost} size={14} />
+                        )}
+                        {card.prices?.usd && (
+                          <div className="text-xs text-gray-400">${card.prices.usd}</div>
+                        )}
+                      </div>
+                      {inCollection > 0 && (
+                        <div className="text-xs text-green-400 mt-1">
+                          <CheckCircle size={12} className="inline mr-1" />
+                          x{inCollection} in collection
+                        </div>
+                      )}
+                      {!isValidForCommander && (
+                        <div className="text-xs text-yellow-400 mt-1 flex items-center gap-1">
+                          <AlertCircle size={12} />
+                          Not in commander colors
+                        </div>
+                      )}
+                    </div>
+
+                    {/* Add/Quantity Controls */}
+                    {quantityInDeck > 0 ? (
+                      <div className="flex-shrink-0 flex items-center gap-1" onClick={(e) => e.stopPropagation()}>
+                        <button
+                          onClick={() => {
+                            if (quantityInDeck === 1) {
+                              removeCardFromDeck(card.id);
+                            } else {
+                              updateCardQuantity(card.id, quantityInDeck - 1);
+                            }
+                          }}
+                          className="w-8 h-8 bg-red-600 hover:bg-red-700 rounded-full flex items-center justify-center transition-colors"
+                        >
+                          <Minus size={16} />
+                        </button>
+                        <span className="w-6 text-center text-sm font-medium">{quantityInDeck}</span>
                         <button
                           onClick={() => addCardToDeck(card)}
-                      className="w-full px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center justify-center gap-2"
+                          className="w-8 h-8 bg-blue-600 hover:bg-blue-700 rounded-full flex items-center justify-center transition-colors"
                         >
-                      <Plus size={20} />
-                      Add to Deck
+                          <Plus size={16} />
                         </button>
                       </div>
+                    ) : (
+                      <button
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          addCardToDeck(card);
+                        }}
+                        className="flex-shrink-0 w-10 h-10 bg-blue-600 hover:bg-blue-700 rounded-full flex items-center justify-center transition-colors"
+                      >
+                        <Plus size={20} />
+                      </button>
+                    )}
+
+                    {/* Add to Collection Button (hidden on mobile by default) */}
+                    <button
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleAddCardToCollection(card.id, 1);
+                      }}
+                      disabled={isAddingThisCard}
+                      className="hidden sm:flex flex-shrink-0 w-10 h-10 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-full items-center justify-center transition-colors"
+                      title="Add to collection"
+                    >
+                      {isAddingThisCard ? (
+                        <Loader2 className="animate-spin" size={20} />
+                      ) : (
+                        <PackagePlus size={20} />
+                      )}
+                    </button>
                   </div>
-              ))}
+                );
+              })
+              )}
             </div>
           </div>
 
@@ -437,6 +767,7 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
               </select>
 
               {deckFormat === 'commander' && (
+                <div className="space-y-2">
                   <select
                     value={commander?.id || ''}
                     onChange={e => {
@@ -458,6 +789,17 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
                         </option>
                       ))}
                   </select>
+                  {commander && commanderColors.length > 0 && (
+                    <div className="bg-gray-700 rounded px-3 py-2 flex items-center gap-2">
+                      <span className="text-xs text-gray-400">Commander Colors:</span>
+                      <div className="flex items-center gap-1">
+                        {commanderColors.map(color => (
+                          <ManaSymbol key={color} symbol={color} size={18} />
+                        ))}
+                      </div>
+                    </div>
+                  )}
+                </div>
               )}
 
               <div className="relative">
@@ -492,25 +834,49 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
               )}
 
               <div className="space-y-2">
-                <h3 className="font-bold text-xl mb-4">
+                <div className="flex items-center justify-between mb-4">
+                  <h3 className="font-bold text-xl">
                     Cards ({selectedCards.reduce((acc, curr) => acc + curr.quantity, 0)})
                   </h3>
-                {selectedCards.map(({ card, quantity }) => (
+                </div>
+
+                {selectedCards.map(({ card, quantity }) => {
+                  const isValidForCommander = deckFormat !== 'commander' || !commander || isCardValidForCommander(card, commanderColors);
+
+                  return (
                     <div
                       key={card.id}
-                    className="flex items-center gap-4 bg-gray-700 p-2 rounded-lg"
+                      className={`flex items-center gap-3 p-2 rounded-lg bg-gray-700 cursor-pointer hover:bg-gray-650 transition-colors ${
+                        !isValidForCommander ? 'border border-yellow-500/50' : ''
+                      }`}
+                      onMouseEnter={() => {
+                        setHoveredCard(card);
+                        setHoverSource('deck');
+                      }}
+                      onMouseLeave={() => {
+                        setHoveredCard(null);
+                        setHoverSource(null);
+                      }}
+                      onClick={() => setSelectedCard(card)}
                     >
                       <img
                         src={card.image_uris?.art_crop}
                         alt={card.name}
-                      className="w-12 h-12 rounded"
+                        className="w-10 h-10 rounded"
                       />
-                    <div className="flex-1">
-                      <h4 className="font-medium">{card.name}</h4>
+                      <div className="flex-1 min-w-0">
+                        <h4 className="font-medium text-sm truncate">{card.name}</h4>
                         {card.prices?.usd && (
-                        <div className="text-sm text-gray-400">${card.prices.usd}</div>
+                          <div className="text-xs text-gray-400">${card.prices.usd}</div>
+                        )}
+                        {!isValidForCommander && (
+                          <div className="text-xs text-yellow-400 flex items-center gap-1 mt-0.5">
+                            <AlertCircle size={10} />
+                            <span>Not in commander colors</span>
+                          </div>
                         )}
                       </div>
+                      <div className="flex items-center gap-2" onClick={(e) => e.stopPropagation()}>
                         <input
                           type="number"
                           value={quantity}
@@ -518,69 +884,282 @@ export default function DeckManager({ initialDeck, onSave }: DeckManagerProps) {
                             updateCardQuantity(card.id, parseInt(e.target.value))
                           }
                           min="1"
-                      className="w-16 px-2 py-1 bg-gray-600 border border-gray-500 rounded text-center"
+                          className="w-14 px-2 py-1 bg-gray-600 border border-gray-500 rounded text-center text-sm"
                         />
                         <button
                           onClick={() => removeCardFromDeck(card.id)}
                           className="text-red-500 hover:text-red-400"
                         >
-                      <Trash2 size={20} />
+                          <Trash2 size={18} />
                         </button>
                       </div>
-                ))}
+                    </div>
+                  );
+                })}
               </div>
 
-              <div className="font-bold text-xl">
-                Total Price: ${totalPrice.toFixed(2)}
+              {deckSize > 0 && suggestedLandCountValue > 0 && (
+                <div className="bg-gray-700 rounded-lg p-3">
+                  <div className="flex items-center justify-between mb-2">
+                    <span className="text-sm font-semibold text-gray-300">Suggested Lands</span>
+                    <span className="text-xs text-gray-400">{suggestedLandCountValue} total</span>
                   </div>
-
-              {deckSize > 0 && (
-                <div className="text-gray-400">
-                  Suggested Land Count: {suggestedLandCountValue}
-                  {Object.entries(suggestedLands).map(([landType, count]) => (
-                    <div key={landType}>
-                      {landType}: {count}
-                    </div>
-                  ))}
+                  <div className="flex items-center gap-3 flex-wrap">
+                    {Object.entries(suggestedLands).map(([landType, count]) =>
+                      count > 0 ? (
+                        <div key={landType} className="flex items-center gap-1.5 bg-gray-800 px-2 py-1 rounded">
+                          <ManaSymbol symbol={landType} size={20} />
+                          <span className="text-sm font-medium text-white">{count}</span>
                         </div>
+                      ) : null
                     )}
-
-              {deckSize > 0 && (
+                  </div>
                   <button
                     onClick={addSuggestedLandsToDeck}
-                  className="w-full px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center justify-center gap-2"
+                    className="w-full mt-3 px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg flex items-center justify-center gap-2 transition-colors"
                   >
                     <Plus size={20} />
                     Add Suggested Lands
                   </button>
+                </div>
               )}
 
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* Fixed Footer with Price and Actions - Mobile First */}
+      <div className="fixed bottom-16 left-0 right-0 md:left-auto md:right-4 md:bottom-4 md:w-80 z-20 bg-gray-800 border-t border-gray-700 md:border md:rounded-lg shadow-2xl">
+        <div className="p-3 space-y-3">
+          {/* Total Price */}
+          <div className="flex items-center justify-between">
+            <span className="text-sm font-semibold text-gray-300">Total Price</span>
+            <span className="text-xl font-bold text-green-400">${totalPrice.toFixed(2)}</span>
+          </div>
+
+          {/* Action Buttons */}
+          <div className="flex gap-2">
+            {!isLoadingCollection && getMissingCards().length > 0 && (
+              <button
+                onClick={handleAddAllMissingCards}
+                disabled={isAddingAll}
+                className="flex-1 px-3 py-2 bg-yellow-600 hover:bg-yellow-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center justify-center gap-2 text-sm font-medium transition-colors"
+                title="Add missing cards to collection"
+              >
+                {isAddingAll ? (
+                  <Loader2 className="animate-spin" size={18} />
+                ) : (
+                  <>
+                    <PackagePlus size={18} />
+                    <span className="hidden sm:inline">Add Missing</span>
+                  </>
+                )}
+              </button>
+            )}
             <button
               onClick={saveDeck}
               disabled={
                 !deckName.trim() || selectedCards.length === 0 || isSaving
               }
-                className="w-full px-4 py-2 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center justify-center gap-2 relative"
+              className="flex-1 px-3 py-2 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center justify-center gap-2 text-sm font-medium relative transition-colors"
             >
               {isSaving ? (
                 <>
-                    <Loader2 className="animate-spin text-white absolute left-2 top-1/2 -translate-y-1/2" size={20} />
-                    <span className="opacity-0">Save Deck</span>
+                  <Loader2 className="animate-spin text-white" size={18} />
+                  <span>Saving...</span>
                 </>
               ) : (
                 <>
-                    <Save size={20} />
-                    <span>{initialDeck ? 'Update Deck' : 'Save Deck'}</span>
+                  <Save size={18} />
+                  <span>{initialDeck ? 'Update' : 'Save'}</span>
                 </>
               )}
             </button>
           </div>
         </div>
       </div>
+
+      {/* Hover Card Preview - only show if no card is selected */}
+      {hoveredCard && !selectedCard && (() => {
+        const currentFaceIndex = getCurrentFaceIndex(hoveredCard.id);
+        const isMultiFaced = isDoubleFaced(hoveredCard);
+        const currentFace = isMultiFaced && hoveredCard.card_faces
+          ? hoveredCard.card_faces[currentFaceIndex]
+          : null;
+
+        const displayName = currentFace?.name || hoveredCard.name;
+        const displayTypeLine = currentFace?.type_line || hoveredCard.type_line;
+        const displayOracleText = currentFace?.oracle_text || hoveredCard.oracle_text;
+
+        // Position preview based on hover source
+        const positionClass = hoverSource === 'deck' ? 'left-8' : 'right-8';
+
+        return (
+          <div className={`hidden lg:block fixed top-1/2 ${positionClass} transform -translate-y-1/2 z-30 pointer-events-none`}>
+            <div className="bg-gray-800 rounded-lg shadow-2xl p-4 max-w-md">
+              <div className="relative">
+                <img
+                  src={getCardLargeImageUri(hoveredCard, currentFaceIndex)}
+                  alt={displayName}
+                  className="w-full h-auto rounded-lg shadow-lg"
+                />
+                {isMultiFaced && (
+                  <div className="absolute top-2 right-2 bg-purple-600 text-white text-xs font-bold px-2 py-1 rounded-full shadow-lg">
+                    Face {currentFaceIndex + 1}/{hoveredCard.card_faces!.length}
                   </div>
+                )}
+              </div>
+              <div className="mt-3 space-y-2">
+                <h3 className="text-xl font-bold">{displayName}</h3>
+                <p className="text-sm text-gray-400">{displayTypeLine}</p>
+                {displayOracleText && (
+                  <p className="text-sm text-gray-300 border-t border-gray-700 pt-2">
+                    {displayOracleText}
+                  </p>
+                )}
+                {hoveredCard.prices?.usd && (
+                  <div className="text-sm text-green-400 font-semibold border-t border-gray-700 pt-2">
+                    ${hoveredCard.prices.usd}
+                  </div>
+                )}
+              </div>
+            </div>
+          </div>
+        );
+      })()}
+
+      {/* Card Detail Panel - slides in from right */}
+      {selectedCard && (() => {
+        const currentFaceIndex = getCurrentFaceIndex(selectedCard.id);
+        const isMultiFaced = isDoubleFaced(selectedCard);
+        const currentFace = isMultiFaced && selectedCard.card_faces
+          ? selectedCard.card_faces[currentFaceIndex]
+          : null;
+
+        const displayName = currentFace?.name || selectedCard.name;
+        const displayTypeLine = currentFace?.type_line || selectedCard.type_line;
+        const displayOracleText = currentFace?.oracle_text || selectedCard.oracle_text;
+
+        return (
+          <>
+            {/* Backdrop */}
+            <div
+              className="fixed inset-0 bg-black bg-opacity-50 z-[110] transition-opacity duration-300"
+              onClick={() => setSelectedCard(null)}
+            />
+
+            {/* Sliding Panel */}
+            <div className="fixed top-0 right-0 h-full w-full md:w-96 bg-gray-800 shadow-2xl z-[120] overflow-y-auto animate-slide-in-right">
+              {/* Close button */}
+              <button
+                onClick={() => setSelectedCard(null)}
+                className="fixed top-4 right-4 bg-gray-700 hover:bg-gray-600 text-white p-2 md:p-1.5 rounded-full transition-colors z-[130] shadow-lg"
+                aria-label="Close"
+              >
+                <X size={24} className="md:w-5 md:h-5" />
+              </button>
+
+              <div className="p-4 sm:p-6">
+                {/* Card Image */}
+                <div className="relative mb-4 max-w-sm mx-auto">
+                  <img
+                    src={getCardLargeImageUri(selectedCard, currentFaceIndex)}
+                    alt={displayName}
+                    className="w-full h-auto rounded-lg shadow-lg"
+                  />
+                  {isMultiFaced && (
+                    <>
+                      <div className="absolute top-2 right-2 bg-purple-600 text-white text-xs font-bold px-2 py-1 rounded-full shadow-lg">
+                        Face {currentFaceIndex + 1}/{selectedCard.card_faces!.length}
+                      </div>
+                      <button
+                        onClick={() => toggleCardFace(selectedCard.id, selectedCard.card_faces!.length)}
+                        className="absolute bottom-2 right-2 bg-purple-600 hover:bg-purple-700 text-white p-2 rounded-full shadow-lg transition-all"
+                        title="Flip card"
+                      >
+                        <RefreshCw size={20} />
+                      </button>
+                    </>
+                  )}
+                </div>
+
+                {/* Card Info */}
+                <div className="space-y-4">
+                  <div>
+                    <h2 className="text-xl md:text-2xl font-bold text-white mb-2">{displayName}</h2>
+                    <p className="text-xs sm:text-sm text-gray-400">{displayTypeLine}</p>
+                  </div>
+
+                  {displayOracleText && (
+                    <div className="border-t border-gray-700 pt-3">
+                      <p className="text-sm text-gray-300">{displayOracleText}</p>
+                    </div>
+                  )}
+
+                  {selectedCard.prices?.usd && (
+                    <div className="border-t border-gray-700 pt-3">
+                      <div className="text-lg text-green-400 font-semibold">
+                        ${selectedCard.prices.usd} each
+                      </div>
+                    </div>
+                  )}
+
+                  {/* Collection Status */}
+                  {userCollection.has(selectedCard.id) && (
+                    <div className="border-t border-gray-700 pt-3">
+                      <div className="text-sm text-green-400">
+                        <CheckCircle size={16} className="inline mr-1" />
+                        x{userCollection.get(selectedCard.id)} in your collection
+                      </div>
+                    </div>
+                  )}
+
+                  {/* Deck Quantity Management */}
+                  <div className="border-t border-gray-700 pt-3">
+                    <h3 className="text-lg font-semibold mb-3">Quantity in Deck</h3>
+                    <div className="flex items-center justify-between bg-gray-900 rounded-lg p-4">
+                      <button
+                        onClick={() => {
+                          const cardInDeck = selectedCards.find(c => c.card.id === selectedCard.id);
+                          const currentQuantity = cardInDeck?.quantity || 0;
+                          if (currentQuantity === 1) {
+                            removeCardFromDeck(selectedCard.id);
+                          } else if (currentQuantity > 1) {
+                            updateCardQuantity(selectedCard.id, currentQuantity - 1);
+                          }
+                        }}
+                        disabled={!selectedCards.find(c => c.card.id === selectedCard.id)}
+                        className="bg-red-600 hover:bg-red-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white p-2 rounded-lg transition-colors"
+                      >
+                        <Minus size={20} />
+                      </button>
+
+                      <div className="text-center">
+                        <div className="text-3xl font-bold">
+                          {selectedCards.find(c => c.card.id === selectedCard.id)?.quantity || 0}
+                        </div>
+                        <div className="text-xs text-gray-400">copies</div>
+                      </div>
+
+                      <button
+                        onClick={() => addCardToDeck(selectedCard)}
+                        className="bg-green-600 hover:bg-green-700 text-white p-2 rounded-lg transition-colors"
+                      >
+                        <Plus size={20} />
+                      </button>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </>
+        );
+      })()}
+
       {snackbar && (
         <div
-          className={`fixed bottom-4 right-4 bg-green-500 text-white p-4 rounded-lg shadow-lg transition-all duration-300 ${
+          className={`fixed bottom-4 right-4 text-white p-4 rounded-lg shadow-lg transition-all duration-300 z-[140] ${
             snackbar.type === 'success' ? 'bg-green-500' : 'bg-red-500'
           }`}
         >

src/components/LifeCounter.tsx

@@ -1,208 +1,167 @@
-import React, { useState } from 'react';
-import { Users, RotateCcw, Settings } from 'lucide-react';
-import PlayerLifeCounter from './PlayerLifeCounter';
-import CardSearchModal from './CardSearchModal';
-import { Card } from '../types';
+import React, { useState, useEffect } from 'react';
+    import { Plus, Minus } from 'lucide-react';
 
     interface Player {
       id: number;
       name: string;
       life: number;
-  backgroundImage?: string;
+      color: string;
     }
 
-const DEFAULT_STARTING_LIFE = 20;
+    const COLORS = ['white', 'blue', 'black', 'red', 'green'];
 
     export default function LifeCounter() {
-  const [players, setPlayers] = useState<Player[]>([
-    { id: 1, name: 'Player 1', life: DEFAULT_STARTING_LIFE },
-    { id: 2, name: 'Player 2', life: DEFAULT_STARTING_LIFE },
-  ]);
-  const [isCardSearchOpen, setIsCardSearchOpen] = useState(false);
-  const [selectedPlayerId, setSelectedPlayerId] = useState<number | null>(null);
-  const [showSettings, setShowSettings] = useState(false);
-  const [startingLife, setStartingLife] = useState(DEFAULT_STARTING_LIFE);
+      const [numPlayers, setNumPlayers] = useState<number | null>(null);
+      const [playerNames, setPlayerNames] = useState<string[]>([]);
+      const [players, setPlayers] = useState<Player[]>([]);
+      const [setupComplete, setSetupComplete] = useState(false);
+
+      useEffect(() => {
+        if (numPlayers !== null) {
+          setPlayers(
+            Array.from({ length: numPlayers }, (_, i) => ({
+              id: i + 1,
+              name: playerNames[i] || `Player ${i + 1}`,
+              life: 20,
+              color: COLORS[i % COLORS.length],
+            }))
+          );
+        }
+      }, [numPlayers, playerNames]);
+
+      const handleNumPlayersChange = (e: React.ChangeEvent<HTMLSelectElement>) => {
+        const newNumPlayers = parseInt(e.target.value, 10);
+        setNumPlayers(newNumPlayers);
+        setPlayerNames(Array(newNumPlayers).fill(''));
+      };
+
+      const handleNameChange = (index: number, newName: string) => {
+        const updatedNames = [...playerNames];
+        updatedNames[index] = newName;
+        setPlayerNames(updatedNames);
+      };
 
       const updateLife = (playerId: number, change: number) => {
         setPlayers((prevPlayers) =>
           prevPlayers.map((player) =>
-        player.id === playerId ? { ...player, life: Math.max(0, player.life + change) } : player
+            player.id === playerId ? { ...player, life: player.life + change } : player
           )
         );
       };
 
-  const changePlayerName = (playerId: number) => {
-    const player = players.find((p) => p.id === playerId);
-    if (!player) return;
-
-    const newName = prompt('Enter new player name:', player.name);
-    if (newName && newName.trim()) {
-      setPlayers((prevPlayers) =>
-        prevPlayers.map((p) => (p.id === playerId ? { ...p, name: newName.trim() } : p))
-      );
-    }
+      const handleSubmit = (e: React.FormEvent) => {
+        e.preventDefault();
+        setSetupComplete(true);
       };
 
-  const openBackgroundSelector = (playerId: number) => {
-    setSelectedPlayerId(playerId);
-    setIsCardSearchOpen(true);
-  };
-
-  const handleCardSelect = (card: Card) => {
-    if (selectedPlayerId !== null && card.image_uris?.art_crop) {
-      setPlayers((prevPlayers) =>
-        prevPlayers.map((p) =>
-          p.id === selectedPlayerId ? { ...p, backgroundImage: card.image_uris!.art_crop } : p
-        )
-      );
-    }
-    setSelectedPlayerId(null);
-  };
-
-  const changePlayerCount = (count: number) => {
-    const currentCount = players.length;
-
-    if (count > currentCount) {
-      // Add players
-      const newPlayers = Array.from({ length: count - currentCount }, (_, i) => ({
-        id: currentCount + i + 1,
-        name: `Player ${currentCount + i + 1}`,
-        life: startingLife,
-      }));
-      setPlayers([...players, ...newPlayers]);
-    } else if (count < currentCount) {
-      // Remove players
-      setPlayers(players.slice(0, count));
-    }
-  };
-
-  const resetAllLife = () => {
-    if (confirm(`Reset all players to ${startingLife} life?`)) {
-      setPlayers((prevPlayers) =>
-        prevPlayers.map((p) => ({ ...p, life: startingLife }))
-      );
-    }
-  };
-
-  const getGridClass = () => {
-    const count = players.length;
-    if (count === 1) return 'grid-cols-1';
-    if (count === 2) return 'grid-cols-1 md:grid-cols-2';
-    if (count === 3) return 'grid-cols-1 sm:grid-cols-2 lg:grid-cols-3';
-    if (count === 4) return 'grid-cols-2 lg:grid-cols-2';
-    if (count === 5) return 'grid-cols-2 lg:grid-cols-3';
-    if (count === 6) return 'grid-cols-2 lg:grid-cols-3';
-    if (count === 7 || count === 8) return 'grid-cols-2 lg:grid-cols-4';
-    return 'grid-cols-2 lg:grid-cols-4';
-  };
-
-  return (
-    <div className="min-h-screen bg-gray-900 text-white flex flex-col">
-      {/* Header */}
-      <div className="bg-gray-800 border-b border-gray-700 px-4 py-3 flex items-center justify-between">
-        <h1 className="text-xl md:text-2xl font-bold">Life Counter</h1>
-        <div className="flex items-center gap-2">
-          <button
-            onClick={resetAllLife}
-            className="bg-gray-700 hover:bg-gray-600 text-white rounded-lg px-3 py-2 text-sm flex items-center gap-2 transition-colors"
-          >
-            <RotateCcw size={18} />
-            <span className="hidden sm:inline">Reset</span>
-          </button>
-          <button
-            onClick={() => setShowSettings(!showSettings)}
-            className="bg-blue-600 hover:bg-blue-700 text-white rounded-lg px-3 py-2 text-sm flex items-center gap-2 transition-colors"
-          >
-            <Settings size={18} />
-            <span className="hidden sm:inline">Settings</span>
-          </button>
-        </div>
-      </div>
-
-      {/* Settings Panel */}
-      {showSettings && (
-        <div className="bg-gray-800 border-b border-gray-700 px-4 py-4 animate-fade-in">
-          <div className="max-w-4xl mx-auto grid grid-cols-1 md:grid-cols-2 gap-4">
-            {/* Player Count */}
+      const renderSetupForm = () => (
+        <div className="max-w-md mx-auto">
+          <h2 className="text-2xl font-bold mb-6">Setup Players</h2>
+          <form onSubmit={handleSubmit} className="space-y-4">
             <div>
               <label className="block text-sm font-medium text-gray-300 mb-2">
-                <Users size={16} className="inline mr-2" />
                 Number of Players
               </label>
-              <div className="grid grid-cols-4 gap-2">
-                {[2, 3, 4, 5, 6, 7, 8].map((count) => (
-                  <button
-                    key={count}
-                    onClick={() => changePlayerCount(count)}
-                    className={`py-2 rounded-lg font-medium transition-colors ${
-                      players.length === count
-                        ? 'bg-blue-600 text-white'
-                        : 'bg-gray-700 text-gray-300 hover:bg-gray-600'
-                    }`}
+              <select
+                value={numPlayers || ''}
+                onChange={handleNumPlayersChange}
+                className="w-full px-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
+                required
               >
-                    {count}
-                  </button>
+                <option value="" disabled>Select Number of Players</option>
+                {[2, 3, 4, 5, 6].map((num) => (
+                  <option key={num} value={num}>
+                    {num}
+                  </option>
                 ))}
-              </div>
+              </select>
             </div>
 
-            {/* Starting Life */}
-            <div>
+            {numPlayers !== null &&
+              Array.from({ length: numPlayers }, (_, i) => (
+                <div key={i}>
                   <label className="block text-sm font-medium text-gray-300 mb-2">
-                Starting Life Total
+                    Player {i + 1} Name
                   </label>
-              <div className="grid grid-cols-4 gap-2">
-                {[20, 30, 40].map((life) => (
+                  <input
+                    type="text"
+                    value={playerNames[i] || ''}
+                    onChange={(e) => handleNameChange(i, e.target.value)}
+                    className="w-full px-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-white"
+                    placeholder={`Player ${i + 1} Name`}
+                  />
+                </div>
+              ))}
+
+            {numPlayers !== null && (
               <button
-                    key={life}
-                    onClick={() => {
-                      setStartingLife(life);
-                      if (confirm(`Change starting life to ${life}? This will reset all players.`)) {
-                        setPlayers((prevPlayers) =>
-                          prevPlayers.map((p) => ({ ...p, life }))
-                        );
-                      }
-                    }}
-                    className={`py-2 rounded-lg font-medium transition-colors ${
-                      startingLife === life
-                        ? 'bg-green-600 text-white'
-                        : 'bg-gray-700 text-gray-300 hover:bg-gray-600'
-                    }`}
+                type="submit"
+                className="w-full px-4 py-2 bg-blue-600 hover:bg-blue-700 rounded-lg"
               >
-                    {life}
+                Start Game
               </button>
-                ))}
-              </div>
-            </div>
-          </div>
-        </div>
             )}
-
-      {/* Life Counter Grid */}
-      <div className={`flex-1 grid ${getGridClass()} gap-2 md:gap-4 p-2 md:p-4`}>
-        {players.map((player) => (
-          <PlayerLifeCounter
-            key={player.id}
-            id={player.id}
-            name={player.name}
-            life={player.life}
-            backgroundImage={player.backgroundImage}
-            onLifeChange={(change) => updateLife(player.id, change)}
-            onChangeName={() => changePlayerName(player.id)}
-            onChangeBackground={() => openBackgroundSelector(player.id)}
-          />
-        ))}
+          </form>
         </div>
+      );
 
-      {/* Card Search Modal */}
-      <CardSearchModal
-        isOpen={isCardSearchOpen}
-        onClose={() => {
-          setIsCardSearchOpen(false);
-          setSelectedPlayerId(null);
+      const renderLifeCounters = () => (
+        <div className="flex flex-col items-center justify-center min-h-screen">
+          <div className="relative w-full h-full">
+            {players.map((player, index) => {
+              const angle = (index / players.length) * 360;
+              const rotation = 360 - angle;
+              const x = 50 + 40 * Math.cos((angle - 90) * Math.PI / 180);
+              const y = 50 + 40 * Math.sin((angle - 90) * Math.PI / 180);
+
+              return (
+                <div
+                  key={player.id}
+                  className="absolute transform -translate-x-1/2 -translate-y-1/2"
+                  style={{
+                    top: `${y}%`,
+                    left: `${x}%`,
+                    transform: `translate(-50%, -50%) rotate(${rotation}deg)`,
                   }}
-        onSelectCard={handleCardSelect}
-      />
+                >
+                  <div
+                    className="rounded-lg p-4 flex flex-col items-center"
+                    style={{
+                      backgroundColor: `var(--color-${player.color}-primary)`,
+                      color: 'white',
+                      transform: `rotate(${-rotation}deg)`,
+                    }}
+                  >
+                    <h2 className="text-xl font-bold mb-4">{player.name}</h2>
+                    <div className="text-4xl font-bold mb-4">{player.life}</div>
+                    <div className="flex gap-4">
+                      <button
+                        onClick={() => updateLife(player.id, 1)}
+                        className="bg-green-600 hover:bg-green-700 rounded-full p-2"
+                      >
+                        <Plus size={24} />
+                      </button>
+                      <button
+                        onClick={() => updateLife(player.id, -1)}
+                        className="bg-red-600 hover:bg-red-700 rounded-full p-2"
+                      >
+                        <Minus size={24} />
+                      </button>
+                    </div>
+                  </div>
+                </div>
+              );
+            })}
+          </div>
+        </div>
+      );
+
+      return (
+        <div className="relative md:min-h-screen bg-gray-900 text-white p-6">
+          <div className="max-w-7xl mx-auto">
+            <h1 className="text-3xl font-bold mb-6">Life Counter</h1>
+            {!setupComplete ? renderSetupForm() : renderLifeCounters()}
+          </div>
         </div>
       );
     }

src/components/MagicCard.tsx

@@ -6,11 +6,14 @@ interface MagicCardProps {
 }
 
 const MagicCard = ({ card }: MagicCardProps) => {
+  // Handle both regular cards and double-faced cards (transform, modal_dfc, etc)
+  const imageUri = card.image_uris?.normal || card.card_faces?.[0]?.image_uris?.normal;
+
   return (
     <div className="relative card-hover animate-fade-in">
-      {card.image_uris?.normal ? (
+      {imageUri ? (
         <img
-          src={card.image_uris.normal}
+          src={imageUri}
           alt={card.name}
           className="w-full h-auto rounded-lg transition-smooth"
         />

src/components/ManaCost.tsx

@@ -0,0 +1,71 @@
+import React from 'react';
+
+// Map mana symbols to their icon paths
+const MANA_ICONS: Record<string, string> = {
+  W: '/mana-color/plains.png',
+  U: '/mana-color/island.png',
+  B: '/mana-color/swamp.png',
+  R: '/mana-color/moutain.png', // Note: filename has typo "moutain"
+  G: '/mana-color/forest.png',
+};
+
+interface ManaSymbolProps {
+  symbol: string;
+  size?: number;
+}
+
+// Renders a single mana symbol (either as an icon or as text for numbers/other)
+export function ManaSymbol({ symbol, size = 16 }: ManaSymbolProps) {
+  const iconPath = MANA_ICONS[symbol];
+
+  if (iconPath) {
+    return (
+      <img
+        src={iconPath}
+        alt={symbol}
+        className="inline-block"
+        style={{ width: size, height: size }}
+      />
+    );
+  }
+
+  // For numbers and other symbols, show as a circle with the symbol
+  return (
+    <span
+      className="inline-flex items-center justify-center bg-gray-500 text-white font-bold rounded-full"
+      style={{ width: size, height: size, fontSize: size * 0.6 }}
+    >
+      {symbol}
+    </span>
+  );
+}
+
+interface ManaCostProps {
+  cost: string;
+  size?: number;
+}
+
+// Parses and renders a full mana cost string like "{2}{W}{U}"
+export function ManaCost({ cost, size = 16 }: ManaCostProps) {
+  if (!cost) return null;
+
+  // Parse mana cost string: {2}{W}{U} -> ['2', 'W', 'U']
+  const symbols = cost.match(/\{([^}]+)\}/g)?.map(s => s.slice(1, -1)) || [];
+
+  if (symbols.length === 0) return null;
+
+  return (
+    <span className="inline-flex items-center gap-0.5">
+      {symbols.map((symbol, index) => (
+        <ManaSymbol key={index} symbol={symbol} size={size} />
+      ))}
+    </span>
+  );
+}
+
+// Helper to get icon path for a color (for use in filters, etc.)
+export function getManaIconPath(color: string): string | null {
+  return MANA_ICONS[color] || null;
+}
+
+export default ManaCost;

src/components/MigrateDeckButton.tsx

@@ -0,0 +1,64 @@
+import React, { useState } from 'react';
+import { Database, Loader2 } from 'lucide-react';
+import { migrateExistingDecks } from '../utils/migrateDeckData';
+
+export default function MigrateDeckButton() {
+  const [isMigrating, setIsMigrating] = useState(false);
+  const [result, setResult] = useState<string | null>(null);
+
+  const handleMigrate = async () => {
+    if (!confirm('This will update all existing decks with optimization data. Continue?')) {
+      return;
+    }
+
+    setIsMigrating(true);
+    setResult(null);
+
+    try {
+      await migrateExistingDecks();
+      setResult('Migration completed successfully!');
+    } catch (error) {
+      console.error('Migration error:', error);
+      setResult('Migration failed. Check console for details.');
+    } finally {
+      setIsMigrating(false);
+    }
+  };
+
+  return (
+    <div className="bg-gray-800 rounded-lg p-4 border border-gray-700">
+      <h3 className="text-lg font-semibold mb-2 flex items-center gap-2">
+        <Database size={20} />
+        Deck Migration Tool
+      </h3>
+      <p className="text-sm text-gray-400 mb-4">
+        Update existing decks with optimization fields (cover image, validation cache, card count).
+        Run this once after the database migration.
+      </p>
+
+      <button
+        onClick={handleMigrate}
+        disabled={isMigrating}
+        className="px-4 py-2 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white rounded-lg flex items-center gap-2 transition-colors"
+      >
+        {isMigrating ? (
+          <>
+            <Loader2 className="animate-spin" size={20} />
+            Migrating...
+          </>
+        ) : (
+          <>
+            <Database size={20} />
+            Migrate Decks
+          </>
+        )}
+      </button>
+
+      {result && (
+        <p className={`mt-3 text-sm ${result.includes('success') ? 'text-green-400' : 'text-red-400'}`}>
+          {result}
+        </p>
+      )}
+    </div>
+  );
+}

src/components/Modal.tsx

@@ -0,0 +1,80 @@
+import React, { useEffect } from 'react';
+import { X } from 'lucide-react';
+
+interface ModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  children: React.ReactNode;
+  size?: 'sm' | 'md' | 'lg';
+  showCloseButton?: boolean;
+}
+
+export default function Modal({
+  isOpen,
+  onClose,
+  children,
+  size = 'md',
+  showCloseButton = true
+}: ModalProps) {
+  // Close modal on ESC key
+  useEffect(() => {
+    const handleEscape = (e: KeyboardEvent) => {
+      if (e.key === 'Escape' && isOpen) {
+        onClose();
+      }
+    };
+
+    document.addEventListener('keydown', handleEscape);
+    return () => document.removeEventListener('keydown', handleEscape);
+  }, [isOpen, onClose]);
+
+  // Prevent body scroll when modal is open
+  useEffect(() => {
+    if (isOpen) {
+      document.body.style.overflow = 'hidden';
+    } else {
+      document.body.style.overflow = 'unset';
+    }
+
+    return () => {
+      document.body.style.overflow = 'unset';
+    };
+  }, [isOpen]);
+
+  if (!isOpen) return null;
+
+  const sizeClasses = {
+    sm: 'max-w-md',
+    md: 'max-w-lg',
+    lg: 'max-w-2xl',
+  };
+
+  return (
+    <>
+      {/* Backdrop */}
+      <div
+        className="fixed inset-0 bg-black bg-opacity-50 z-[110] transition-opacity duration-300 animate-fade-in"
+        onClick={onClose}
+      />
+
+      {/* Modal */}
+      <div className="fixed inset-0 z-[120] flex items-center justify-center p-4 pointer-events-none">
+        <div
+          className={`${sizeClasses[size]} w-full bg-gray-800 rounded-lg shadow-2xl pointer-events-auto animate-scale-in`}
+          onClick={(e) => e.stopPropagation()}
+        >
+          {showCloseButton && (
+            <button
+              onClick={onClose}
+              className="absolute top-4 right-4 text-gray-400 hover:text-white transition-colors z-10"
+            >
+              <X size={24} />
+            </button>
+          )}
+
+          {children}
+        </div>
+      </div>
+    </>
+  );
+}

src/components/Navigation.tsx

@@ -1,9 +1,9 @@
 import React, { useState, useRef, useEffect } from 'react';
-    import { Home, PlusSquare, Library, LogOut, Settings, ChevronDown, Search, Heart, Menu } from 'lucide-react';
+import { Library, LogOut, ChevronDown, Search, Heart, Users } from 'lucide-react';
 import { useAuth } from '../contexts/AuthContext';
 import { supabase } from '../lib/supabase';
 
-    type Page = 'home' | 'deck' | 'login' | 'collection' | 'profile' | 'search' | 'life-counter';
+type Page = 'home' | 'deck' | 'login' | 'collection' | 'search' | 'life-counter' | 'community';
 
 interface NavigationProps {
   currentPage: Page;
@@ -13,9 +13,7 @@ import React, { useState, useRef, useEffect } from 'react';
 export default function Navigation({ currentPage, setCurrentPage }: NavigationProps) {
   const { user, signOut } = useAuth();
   const [showDropdown, setShowDropdown] = useState(false);
-      const [showMobileMenu, setShowMobileMenu] = useState(false);
   const dropdownRef = useRef<HTMLDivElement>(null);
-      const mobileMenuRef = useRef<HTMLDivElement>(null);
   const [username, setUsername] = useState<string | null>(null);
 
   useEffect(() => {
@@ -41,9 +39,6 @@ import React, { useState, useRef, useEffect } from 'react';
       if (dropdownRef.current && !dropdownRef.current.contains(event.target as Node)) {
         setShowDropdown(false);
       }
-          if (mobileMenuRef.current && !mobileMenuRef.current.contains(event.target as Node)) {
-            setShowMobileMenu(false);
-          }
     };
 
     document.addEventListener('mousedown', handleClickOutside);
@@ -51,11 +46,11 @@ import React, { useState, useRef, useEffect } from 'react';
   }, []);
 
   const navItems = [
-        { id: 'home' as const, label: 'Home', icon: Home },
-        { id: 'deck' as const, label: 'New Deck', icon: PlusSquare },
+    { id: 'home' as const, label: 'Decks', icon: Library },
     { id: 'collection' as const, label: 'Collection', icon: Library },
+    { id: 'community' as const, label: 'Community', icon: Users },
     { id: 'search' as const, label: 'Search', icon: Search },
-        { id: 'life-counter' as const, label: 'Life Counter', icon: Heart },
+    { id: 'life-counter' as const, label: 'Life', icon: Heart },
   ];
 
   const handleSignOut = async () => {
@@ -74,7 +69,7 @@ import React, { useState, useRef, useEffect } from 'react';
   return (
     <>
       {/* Desktop Navigation - Top */}
-          <nav className="hidden md:block fixed top-0 left-0 right-0 bg-gray-800 border-b border-gray-700 z-50 animate-slide-in-left">
+      <nav className="hidden md:block fixed top-0 left-0 right-0 bg-gray-800 border-b border-gray-700 z-[100] animate-slide-in-left">
         <div className="max-w-7xl mx-auto px-4">
           <div className="flex items-center justify-between h-16">
             <div className="flex items-center space-x-8">
@@ -112,17 +107,7 @@ import React, { useState, useRef, useEffect } from 'react';
                   </button>
 
                   {showDropdown && (
-                        <div className="absolute right-0 mt-2 w-48 bg-gray-800 rounded-md shadow-lg py-1 border border-gray-700 animate-scale-in glass-effect">
-                          <button
-                            onClick={() => {
-                              setCurrentPage('profile');
-                              setShowDropdown(false);
-                            }}
-                            className="flex items-center space-x-2 w-full px-4 py-2 text-sm text-gray-300 hover:bg-gray-700 transition-smooth"
-                          >
-                            <Settings size={16} />
-                            <span>Profile Settings</span>
-                          </button>
+                    <div className="absolute right-0 mt-2 w-48 bg-gray-800 rounded-md shadow-lg py-1 border border-gray-700 animate-scale-in glass-effect z-[110]">
                       <button
                         onClick={handleSignOut}
                         className="flex items-center space-x-2 w-full px-4 py-2 text-sm text-gray-300 hover:bg-gray-700 transition-smooth"
@@ -140,60 +125,33 @@ import React, { useState, useRef, useEffect } from 'react';
       </nav>
 
       {/* Mobile Navigation - Bottom */}
-          <nav className="md:hidden fixed bottom-0 left-0 right-0 bg-gray-800 border-t border-gray-700 z-50 animate-slide-in-right">
-            <div className="flex justify-between items-center h-16 px-4">
-              <span className="text-2xl font-bold text-orange-500 animate-bounce-in">Deckerr</span>
-              <div className="relative" ref={mobileMenuRef}>
-                <button
-                  onClick={() => setShowMobileMenu(!showMobileMenu)}
-                  className="text-gray-300 hover:text-white"
-                >
-                  <Menu size={24} />
-                </button>
-                {showMobileMenu && (
-                  <div className="absolute right-0 bottom-16 w-48 bg-gray-800 rounded-md shadow-lg py-1 border border-gray-700 animate-scale-in glass-effect">
+      <nav className="md:hidden fixed bottom-0 left-0 right-0 bg-gray-800 border-t border-gray-700 z-50 safe-area-bottom">
+        <div className="flex justify-around items-center h-16 px-2">
           {navItems.map((item) => (
             <button
               key={item.id}
-                        onClick={() => {
-                          setCurrentPage(item.id);
-                          setShowMobileMenu(false);
-                        }}
-                        className="flex items-center space-x-2 w-full px-4 py-2 text-sm text-gray-300 hover:bg-gray-700 transition-smooth"
+              onClick={() => setCurrentPage(item.id)}
+              className={`flex flex-col items-center justify-center flex-1 h-full transition-colors ${
+                currentPage === item.id
+                  ? 'text-blue-500'
+                  : 'text-gray-400 hover:text-gray-200'
+              }`}
             >
-                        <item.icon size={16} />
-                        <span>{item.label}</span>
+              <item.icon size={20} />
+              <span className="text-xs mt-1">{item.label}</span>
             </button>
           ))}
-                    {user && (
-                      <>
-                        <button
-                          onClick={() => {
-                            setCurrentPage('profile');
-                            setShowMobileMenu(false);
-                          }}
-                          className="flex items-center space-x-2 w-full px-4 py-2 text-sm text-gray-300 hover:bg-gray-700 transition-smooth"
-                        >
-                          <Settings size={16} />
-                          <span>Profile Settings</span>
-                        </button>
+
+          {/* Sign Out button for mobile */}
           <button
             onClick={handleSignOut}
-                          className="flex items-center space-x-2 w-full px-4 py-2 text-sm text-gray-300 hover:bg-gray-700 transition-smooth"
+            className="flex flex-col items-center justify-center flex-1 h-full text-gray-400 hover:text-gray-200 transition-colors"
           >
-                          <LogOut size={16} />
-                          <span>Sign Out</span>
+            <LogOut size={20} />
+            <span className="text-xs mt-1">Logout</span>
           </button>
-                      </>
-                    )}
-                  </div>
-                )}
-              </div>
         </div>
       </nav>
-
-          {/* Content Padding */}
-          <div className="md:pt-16 pb-16 md:pb-0" />
     </>
   );
 }

src/components/PWAInstallPrompt.tsx

@@ -0,0 +1,128 @@
+import React, { useEffect, useState } from 'react';
+import { Download, X } from 'lucide-react';
+
+interface BeforeInstallPromptEvent extends Event {
+  prompt: () => Promise<void>;
+  userChoice: Promise<{ outcome: 'accepted' | 'dismissed' }>;
+}
+
+export default function PWAInstallPrompt() {
+  const [deferredPrompt, setDeferredPrompt] = useState<BeforeInstallPromptEvent | null>(null);
+  const [showPrompt, setShowPrompt] = useState(false);
+  const [isInstalled, setIsInstalled] = useState(false);
+
+  useEffect(() => {
+    // Check if already installed
+    const isStandalone = window.matchMedia('(display-mode: standalone)').matches;
+    if (isStandalone || (window.navigator as any).standalone) {
+      setIsInstalled(true);
+      return;
+    }
+
+    // Check if user dismissed the prompt before
+    const dismissed = localStorage.getItem('pwa-install-dismissed');
+    const dismissedTime = dismissed ? parseInt(dismissed) : 0;
+    const daysSinceDismissed = (Date.now() - dismissedTime) / (1000 * 60 * 60 * 24);
+
+    // Show prompt again after 7 days
+    if (daysSinceDismissed > 7) {
+      localStorage.removeItem('pwa-install-dismissed');
+    }
+
+    const handler = (e: Event) => {
+      e.preventDefault();
+      const promptEvent = e as BeforeInstallPromptEvent;
+      setDeferredPrompt(promptEvent);
+
+      // Show prompt if not dismissed recently
+      if (!dismissed || daysSinceDismissed > 7) {
+        setShowPrompt(true);
+      }
+    };
+
+    window.addEventListener('beforeinstallprompt', handler);
+
+    // Detect if app was installed
+    window.addEventListener('appinstalled', () => {
+      setIsInstalled(true);
+      setShowPrompt(false);
+      setDeferredPrompt(null);
+    });
+
+    return () => {
+      window.removeEventListener('beforeinstallprompt', handler);
+    };
+  }, []);
+
+  const handleInstallClick = async () => {
+    if (!deferredPrompt) return;
+
+    try {
+      await deferredPrompt.prompt();
+      const choiceResult = await deferredPrompt.userChoice;
+
+      if (choiceResult.outcome === 'accepted') {
+        console.log('User accepted the install prompt');
+        setShowPrompt(false);
+      } else {
+        console.log('User dismissed the install prompt');
+        handleDismiss();
+      }
+    } catch (error) {
+      console.error('Error during installation:', error);
+    } finally {
+      setDeferredPrompt(null);
+    }
+  };
+
+  const handleDismiss = () => {
+    setShowPrompt(false);
+    localStorage.setItem('pwa-install-dismissed', Date.now().toString());
+  };
+
+  if (isInstalled || !showPrompt) {
+    return null;
+  }
+
+  return (
+    <div className="fixed bottom-20 md:bottom-4 left-4 right-4 md:left-auto md:right-4 md:max-w-sm z-[105] animate-slide-in-bottom">
+      <div className="bg-gradient-to-r from-blue-600 to-purple-600 rounded-lg shadow-2xl p-4 text-white">
+        <button
+          onClick={handleDismiss}
+          className="absolute top-2 right-2 text-white/80 hover:text-white transition-colors"
+          aria-label="Dismiss"
+        >
+          <X size={20} />
+        </button>
+
+        <div className="flex items-start gap-3 pr-6">
+          <div className="bg-white/20 rounded-lg p-2 flex-shrink-0">
+            <Download size={24} />
+          </div>
+
+          <div className="flex-1">
+            <h3 className="font-bold text-lg mb-1">Install Deckerr</h3>
+            <p className="text-sm text-white/90 mb-3">
+              Install our app for quick access and offline support!
+            </p>
+
+            <div className="flex gap-2">
+              <button
+                onClick={handleInstallClick}
+                className="flex-1 bg-white text-blue-600 font-semibold py-2 px-4 rounded-lg hover:bg-blue-50 transition-colors min-h-[44px]"
+              >
+                Install
+              </button>
+              <button
+                onClick={handleDismiss}
+                className="flex-1 bg-white/20 font-semibold py-2 px-4 rounded-lg hover:bg-white/30 transition-colors min-h-[44px]"
+              >
+                Not Now
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

src/components/PlayerLifeCounter.tsx

@@ -1,85 +0,0 @@
-import React from 'react';
-import { Plus, Minus, Image as ImageIcon } from 'lucide-react';
-
-interface PlayerLifeCounterProps {
-  id: number;
-  name: string;
-  life: number;
-  backgroundImage?: string;
-  onLifeChange: (change: number) => void;
-  onChangeName: () => void;
-  onChangeBackground: () => void;
-}
-
-export default function PlayerLifeCounter({
-  name,
-  life,
-  backgroundImage,
-  onLifeChange,
-  onChangeName,
-  onChangeBackground,
-}: PlayerLifeCounterProps) {
-  return (
-    <div className="relative h-full rounded-lg overflow-hidden shadow-lg">
-      {/* Background Image */}
-      {backgroundImage ? (
-        <div
-          className="absolute inset-0 bg-cover bg-center"
-          style={{ backgroundImage: `url(${backgroundImage})` }}
-        >
-          <div className="absolute inset-0 bg-gradient-to-b from-black/60 via-black/50 to-black/70"></div>
-        </div>
-      ) : (
-        <div className="absolute inset-0 bg-gradient-to-br from-gray-700 via-gray-800 to-gray-900"></div>
-      )}
-
-      {/* Content */}
-      <div className="relative h-full flex flex-col items-center justify-between p-4 md:p-6">
-        {/* Player Name */}
-        <button
-          onClick={onChangeName}
-          className="text-white font-bold text-lg md:text-xl hover:text-blue-300 transition-colors px-4 py-2 rounded-lg hover:bg-white/10"
-        >
-          {name}
-        </button>
-
-        {/* Life Total */}
-        <div className="flex flex-col items-center justify-center flex-1">
-          <div className="text-6xl sm:text-7xl md:text-8xl lg:text-9xl font-bold text-white drop-shadow-2xl">
-            {life}
-          </div>
-        </div>
-
-        {/* Controls */}
-        <div className="flex flex-col gap-3 w-full">
-          {/* Life Buttons */}
-          <div className="flex gap-3 w-full">
-            <button
-              onClick={() => onLifeChange(-1)}
-              className="flex-1 bg-red-600 hover:bg-red-700 text-white rounded-lg py-3 md:py-4 px-4 font-bold text-xl transition-colors active:scale-95 flex items-center justify-center gap-2"
-            >
-              <Minus size={24} />
-              <span className="hidden sm:inline">-1</span>
-            </button>
-            <button
-              onClick={() => onLifeChange(1)}
-              className="flex-1 bg-green-600 hover:bg-green-700 text-white rounded-lg py-3 md:py-4 px-4 font-bold text-xl transition-colors active:scale-95 flex items-center justify-center gap-2"
-            >
-              <Plus size={24} />
-              <span className="hidden sm:inline">+1</span>
-            </button>
-          </div>
-
-          {/* Background Button */}
-          <button
-            onClick={onChangeBackground}
-            className="w-full bg-blue-600 hover:bg-blue-700 text-white rounded-lg py-2 px-4 text-sm transition-colors flex items-center justify-center gap-2"
-          >
-            <ImageIcon size={16} />
-            Change Background
-          </button>
-        </div>
-      </div>
-    </div>
-  );
-}

src/components/Profile.tsx

@@ -1,128 +0,0 @@
-import React, { useState, useEffect } from 'react';
-import { Save } from 'lucide-react';
-import { useAuth } from '../contexts/AuthContext';
-import { supabase } from '../lib/supabase';
-
-const THEME_COLORS = ['red', 'green', 'blue', 'yellow', 'grey', 'purple'];
-
-export default function Profile() {
-  const { user } = useAuth();
-  const [username, setUsername] = useState('');
-  const [themeColor, setThemeColor] = useState('blue');
-  const [loading, setLoading] = useState(true);
-  const [saving, setSaving] = useState(false);
-
-  useEffect(() => {
-    const loadProfile = async () => {
-      if (user) {
-        const { data, error } = await supabase
-          .from('profiles')
-          .select('username, theme_color')
-          .eq('id', user.id)
-          .single();
-
-        if (data) {
-          setUsername(data.username || '');
-          setThemeColor(data.theme_color || 'blue');
-        }
-        setLoading(false);
-      }
-    };
-
-    loadProfile();
-  }, [user]);
-
-  const handleSubmit = async (e: React.FormEvent) => {
-    e.preventDefault();
-    if (!user) return;
-
-    setSaving(true);
-    try {
-      const { error } = await supabase
-        .from('profiles')
-        .upsert({
-          id: user.id,
-          username,
-          theme_color: themeColor,
-          updated_at: new Date()
-        });
-
-      if (error) throw error;
-      alert('Profile updated successfully!');
-    } catch (error) {
-      console.error('Error updating profile:', error);
-      alert('Failed to update profile');
-    } finally {
-      setSaving(false);
-    }
-  };
-
-  if (loading) {
-    return (
-      <div className="min-h-screen bg-gray-900 flex items-center justify-center">
-        <div className="animate-spin rounded-full h-32 w-32 border-t-2 border-b-2 border-blue-500"></div>
-      </div>
-    );
-  }
-
-  return (
-    <div className="min-h-screen bg-gray-900 text-white p-6">
-      <div className="max-w-2xl mx-auto">
-        <h1 className="text-3xl font-bold mb-8">Profile Settings</h1>
-        
-        <form onSubmit={handleSubmit} className="space-y-6">
-          <div>
-            <label className="block text-sm font-medium text-gray-300 mb-2">
-              Username
-            </label>
-            <input
-              type="text"
-              value={username}
-              onChange={(e) => setUsername(e.target.value)}
-              className="w-full px-4 py-2 bg-gray-800 border border-gray-700 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent"
-              placeholder="Enter your username"
-            />
-          </div>
-
-          <div>
-            <label className="block text-sm font-medium text-gray-300 mb-2">
-              Theme Color
-            </label>
-            <div className="grid grid-cols-3 gap-4">
-              {THEME_COLORS.map((color) => (
-                <button
-                  key={color}
-                  type="button"
-                  onClick={() => setThemeColor(color)}
-                  className={`h-12 rounded-lg border-2 transition-all capitalize
-                    ${themeColor === color
-                      ? 'border-white scale-105'
-                      : 'border-transparent hover:border-gray-600'
-                    }`}
-                  style={{ backgroundColor: `var(--color-${color}-primary)` }}
-                >
-                  {color}
-                </button>
-              ))}
-            </div>
-          </div>
-
-          <button
-            type="submit"
-            disabled={saving}
-            className="w-full flex items-center justify-center gap-2 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 text-white font-semibold py-2 px-4 rounded-lg transition duration-200"
-          >
-            {saving ? (
-              <div className="animate-spin rounded-full h-5 w-5 border-t-2 border-b-2 border-white"></div>
-            ) : (
-              <>
-                <Save size={20} />
-                Save Changes
-              </>
-            )}
-          </button>
-        </form>
-      </div>
-    </div>
-  );
-}

src/components/TradeCreator.tsx

@@ -0,0 +1,754 @@
+import React, { useState, useEffect } from 'react';
+import { X, ArrowLeftRight, ArrowRight, ArrowLeft, Minus, Send, Gift, Loader2, Search } from 'lucide-react';
+import { useAuth } from '../contexts/AuthContext';
+import { useToast } from '../contexts/ToastContext';
+import { getUserCollection, getCardsByIds } from '../services/api';
+import { createTrade, updateTrade } from '../services/tradesService';
+import { Card } from '../types';
+
+interface CollectionItem {
+  card: Card;
+  quantity: number;
+}
+
+interface SelectedCard {
+  card: Card;
+  quantity: number;
+  maxQuantity: number;
+}
+
+// ============ MOVED OUTSIDE TO PREVENT RE-RENDER ============
+
+interface CollectionGridProps {
+  items: CollectionItem[];
+  selectedCards: Map<string, SelectedCard>;
+  onAdd: (card: Card, maxQty: number) => void;
+  onRemove: (cardId: string) => void;
+  emptyMessage: string;
+  selectionColor: 'green' | 'blue';
+  searchValue: string;
+  onSearchChange: (value: string) => void;
+  searchPlaceholder: string;
+}
+
+function CollectionGrid({
+  items,
+  selectedCards,
+  onAdd,
+  onRemove,
+  emptyMessage,
+  selectionColor,
+  searchValue,
+  onSearchChange,
+  searchPlaceholder,
+}: CollectionGridProps) {
+  const ringColor = selectionColor === 'green' ? 'ring-green-500' : 'ring-blue-500';
+  const badgeColor = selectionColor === 'green' ? 'bg-green-600' : 'bg-blue-500';
+
+  const filteredItems = items.filter(({ card }) =>
+    card.name.toLowerCase().includes(searchValue.toLowerCase())
+  );
+
+  return (
+    <div className="space-y-3">
+      <div className="relative">
+        <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-gray-400" size={16} />
+        <input
+          type="text"
+          value={searchValue}
+          onChange={(e) => onSearchChange(e.target.value)}
+          placeholder={searchPlaceholder}
+          className="w-full pl-9 pr-8 py-2 bg-gray-700 border border-gray-600 rounded-lg text-sm focus:ring-2 focus:ring-blue-500 focus:border-transparent"
+        />
+        {searchValue && (
+          <button
+            onClick={() => onSearchChange('')}
+            className="absolute right-2 top-1/2 -translate-y-1/2 text-gray-400 hover:text-white"
+          >
+            <X size={16} />
+          </button>
+        )}
+      </div>
+
+      {items.length === 0 ? (
+        <p className="text-gray-400 text-center py-8">{emptyMessage}</p>
+      ) : filteredItems.length === 0 ? (
+        <p className="text-gray-400 text-center py-8">No cards match "{searchValue}"</p>
+      ) : (
+        <div className="grid grid-cols-3 sm:grid-cols-4 md:grid-cols-5 gap-2">
+          {filteredItems.map(({ card, quantity }) => {
+            const selected = selectedCards.get(card.id);
+            const remainingQty = quantity - (selected?.quantity || 0);
+            return (
+              <div
+                key={card.id}
+                className={`relative cursor-pointer rounded-lg overflow-hidden transition active:scale-95 ${
+                  selected ? `ring-2 ${ringColor}` : 'active:ring-2 active:ring-gray-500'
+                }`}
+                onClick={() => remainingQty > 0 && onAdd(card, quantity)}
+              >
+                <img
+                  src={card.image_uris?.small || card.image_uris?.normal}
+                  alt={card.name}
+                  className={`w-full h-auto ${remainingQty === 0 ? 'opacity-50' : ''}`}
+                />
+                <div className="absolute top-1 right-1 bg-gray-900/80 text-white text-[10px] px-1 py-0.5 rounded">
+                  {remainingQty}/{quantity}
+                </div>
+                {card.prices?.usd && (
+                  <div className="absolute top-1 left-1 bg-gray-900/80 text-green-400 text-[10px] px-1 py-0.5 rounded font-semibold">
+                    ${card.prices.usd}
+                  </div>
+                )}
+                {selected && (
+                  <button
+                    onClick={(e) => {
+                      e.stopPropagation();
+                      onRemove(card.id);
+                    }}
+                    className={`absolute bottom-1 left-1 ${badgeColor} text-white text-[10px] px-1.5 py-0.5 rounded flex items-center gap-0.5`}
+                  >
+                    +{selected.quantity}
+                    <Minus size={10} />
+                  </button>
+                )}
+              </div>
+            );
+          })}
+        </div>
+      )}
+    </div>
+  );
+}
+
+interface SelectedCardsSummaryProps {
+  cards: Map<string, SelectedCard>;
+  onRemove: (cardId: string) => void;
+  label: string;
+  emptyLabel: string;
+  color: 'green' | 'blue';
+}
+
+function SelectedCardsSummary({ cards, onRemove, label, emptyLabel, color }: SelectedCardsSummaryProps) {
+  const bgColor = color === 'green' ? 'bg-green-900/50' : 'bg-blue-900/50';
+  const textColor = color === 'green' ? 'text-green-400' : 'text-blue-400';
+
+  // Calculate total price
+  const totalPrice = Array.from(cards.values()).reduce((total, item) => {
+    const price = item.card.prices?.usd ? parseFloat(item.card.prices.usd) : 0;
+    return total + (price * item.quantity);
+  }, 0);
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-1">
+        <h4 className={`text-xs font-semibold ${textColor}`}>{label}:</h4>
+        {cards.size > 0 && (
+          <span className={`text-xs font-semibold ${textColor}`}>
+            ${totalPrice.toFixed(2)}
+          </span>
+        )}
+      </div>
+      {cards.size === 0 ? (
+        <p className="text-gray-500 text-xs">{emptyLabel}</p>
+      ) : (
+        <div className="flex flex-wrap gap-1">
+          {Array.from(cards.values()).map((item) => (
+            <div
+              key={item.card.id}
+              className={`flex items-center gap-1 ${bgColor} px-1.5 py-0.5 rounded text-xs`}
+            >
+              <span className="truncate max-w-[80px]">{item.card.name}</span>
+              <span className={textColor}>x{item.quantity}</span>
+              <button
+                onClick={() => onRemove(item.card.id)}
+                className="text-red-400 active:text-red-300"
+              >
+                <Minus size={12} />
+              </button>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
+
+// ============ MAIN COMPONENT ============
+
+interface TradeCreatorProps {
+  receiverId: string;
+  receiverUsername: string;
+  receiverCollection: CollectionItem[];
+  onClose: () => void;
+  onTradeCreated: () => void;
+  editMode?: boolean;
+  existingTradeId?: string;
+  initialSenderCards?: Card[];
+  initialReceiverCards?: Card[];
+  initialMessage?: string;
+}
+
+type MobileStep = 'want' | 'give' | 'review';
+
+export default function TradeCreator({
+  receiverId,
+  receiverUsername,
+  receiverCollection,
+  onClose,
+  onTradeCreated,
+  editMode = false,
+  existingTradeId,
+  initialSenderCards = [],
+  initialReceiverCards = [],
+  initialMessage = '',
+}: TradeCreatorProps) {
+  const { user } = useAuth();
+  const toast = useToast();
+  const [myCollection, setMyCollection] = useState<CollectionItem[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [submitting, setSubmitting] = useState(false);
+  const [message, setMessage] = useState(initialMessage);
+
+  const [isGiftMode, setIsGiftMode] = useState(false);
+  const [mobileStep, setMobileStep] = useState<MobileStep>('want');
+
+  const [myOfferedCards, setMyOfferedCards] = useState<Map<string, SelectedCard>>(new Map());
+  const [wantedCards, setWantedCards] = useState<Map<string, SelectedCard>>(new Map());
+
+  const [myCollectionSearch, setMyCollectionSearch] = useState('');
+  const [theirCollectionSearch, setTheirCollectionSearch] = useState('');
+
+  useEffect(() => {
+    loadMyCollection();
+  }, [user]);
+
+  useEffect(() => {
+    if (isGiftMode) {
+      setWantedCards(new Map());
+      setMobileStep('give');
+    } else {
+      setMobileStep('want');
+    }
+  }, [isGiftMode]);
+
+  // Pre-populate cards in edit mode
+  useEffect(() => {
+    if (!editMode || !myCollection.length || !receiverCollection.length) return;
+    if (initialSenderCards.length === 0 && initialReceiverCards.length === 0) return;
+
+    console.log('Pre-populating cards', {
+      initialSenderCards: initialSenderCards.length,
+      initialReceiverCards: initialReceiverCards.length,
+      myCollection: myCollection.length,
+      receiverCollection: receiverCollection.length
+    });
+
+    // Pre-populate sender cards with their quantities
+    const senderMap = new Map<string, SelectedCard>();
+    initialSenderCards.forEach(card => {
+      const collectionItem = myCollection.find(c => c.card.id === card.id);
+      if (collectionItem) {
+        // Find the quantity from trade items if card has quantity property
+        const quantity = (card as any).quantity || 1;
+        console.log('Adding sender card:', card.name, 'qty:', quantity);
+        senderMap.set(card.id, {
+          card: card,
+          quantity: quantity,
+          maxQuantity: collectionItem.quantity,
+        });
+      } else {
+        console.log('Card not found in my collection:', card.name, card.id);
+      }
+    });
+    setMyOfferedCards(senderMap);
+
+    // Pre-populate receiver cards with their quantities
+    const receiverMap = new Map<string, SelectedCard>();
+    initialReceiverCards.forEach(card => {
+      const collectionItem = receiverCollection.find(c => c.card.id === card.id);
+      if (collectionItem) {
+        // Find the quantity from trade items if card has quantity property
+        const quantity = (card as any).quantity || 1;
+        console.log('Adding receiver card:', card.name, 'qty:', quantity);
+        receiverMap.set(card.id, {
+          card: card,
+          quantity: quantity,
+          maxQuantity: collectionItem.quantity,
+        });
+      } else {
+        console.log('Card not found in their collection:', card.name, card.id);
+      }
+    });
+    setWantedCards(receiverMap);
+  }, [editMode, myCollection, receiverCollection, initialSenderCards, initialReceiverCards]);
+
+  const loadMyCollection = async () => {
+    if (!user) return;
+    setLoading(true);
+    try {
+      const collectionMap = await getUserCollection(user.id);
+      if (collectionMap.size === 0) {
+        setMyCollection([]);
+        return;
+      }
+
+      const cardIds = Array.from(collectionMap.keys());
+      const cards = await getCardsByIds(cardIds);
+
+      const collectionWithCards = cards.map((card) => ({
+        card,
+        quantity: collectionMap.get(card.id) || 0,
+      }));
+
+      setMyCollection(collectionWithCards);
+    } catch (error) {
+      console.error('Error loading my collection:', error);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const addToOffer = (card: Card, maxQuantity: number) => {
+    setMyOfferedCards((prev) => {
+      const newMap = new Map(prev);
+      const existing = newMap.get(card.id);
+      if (existing) {
+        if (existing.quantity < existing.maxQuantity) {
+          newMap.set(card.id, { ...existing, quantity: existing.quantity + 1 });
+        }
+      } else {
+        newMap.set(card.id, { card, quantity: 1, maxQuantity });
+      }
+      return newMap;
+    });
+  };
+
+  const removeFromOffer = (cardId: string) => {
+    setMyOfferedCards((prev) => {
+      const newMap = new Map(prev);
+      const existing = newMap.get(cardId);
+      if (existing && existing.quantity > 1) {
+        newMap.set(cardId, { ...existing, quantity: existing.quantity - 1 });
+      } else {
+        newMap.delete(cardId);
+      }
+      return newMap;
+    });
+  };
+
+  const addToWanted = (card: Card, maxQuantity: number) => {
+    setWantedCards((prev) => {
+      const newMap = new Map(prev);
+      const existing = newMap.get(card.id);
+      if (existing) {
+        if (existing.quantity < existing.maxQuantity) {
+          newMap.set(card.id, { ...existing, quantity: existing.quantity + 1 });
+        }
+      } else {
+        newMap.set(card.id, { card, quantity: 1, maxQuantity });
+      }
+      return newMap;
+    });
+  };
+
+  const removeFromWanted = (cardId: string) => {
+    setWantedCards((prev) => {
+      const newMap = new Map(prev);
+      const existing = newMap.get(cardId);
+      if (existing && existing.quantity > 1) {
+        newMap.set(cardId, { ...existing, quantity: existing.quantity - 1 });
+      } else {
+        newMap.delete(cardId);
+      }
+      return newMap;
+    });
+  };
+
+  const handleSubmit = async () => {
+    if (!user) return;
+
+    if (myOfferedCards.size === 0 && wantedCards.size === 0) {
+      toast.warning('Please select at least one card to trade or gift');
+      return;
+    }
+
+    setSubmitting(true);
+    try {
+      const myCards = Array.from(myOfferedCards.values()).map((item) => ({
+        cardId: item.card.id,
+        quantity: item.quantity,
+      }));
+
+      const theirCards = Array.from(wantedCards.values()).map((item) => ({
+        cardId: item.card.id,
+        quantity: item.quantity,
+      }));
+
+      if (editMode && existingTradeId) {
+        // Update existing trade
+        await updateTrade({
+          tradeId: existingTradeId,
+          editorId: user.id,
+          message: message || undefined,
+          myCards,
+          theirCards,
+        });
+        toast.success('Trade updated!');
+      } else {
+        // Create new trade
+        await createTrade({
+          user1Id: user.id,
+          user2Id: receiverId,
+          message: message || undefined,
+          user1Cards: myCards,
+          user2Cards: theirCards,
+        });
+        toast.success('Trade offer sent!');
+      }
+
+      onTradeCreated();
+    } catch (error) {
+      console.error('Error with trade:', error);
+      toast.error(editMode ? 'Failed to update trade' : 'Failed to create trade');
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  const isGift = myOfferedCards.size > 0 && wantedCards.size === 0;
+  const isRequest = myOfferedCards.size === 0 && wantedCards.size > 0;
+
+  const goToNextStep = () => {
+    if (mobileStep === 'want') setMobileStep('give');
+    else if (mobileStep === 'give') setMobileStep('review');
+  };
+
+  const goToPrevStep = () => {
+    if (mobileStep === 'review') setMobileStep('give');
+    else if (mobileStep === 'give' && !isGiftMode) setMobileStep('want');
+  };
+
+  const canSubmit = myOfferedCards.size > 0 || wantedCards.size > 0;
+
+  if (loading) {
+    return (
+      <div className="fixed inset-0 bg-black/80 z-[110] flex items-center justify-center">
+        <Loader2 className="animate-spin text-blue-500" size={48} />
+      </div>
+    );
+  }
+
+  return (
+    <div className="fixed inset-0 bg-black/80 z-[110] flex items-center justify-center p-0 md:p-4">
+      <div className="bg-gray-800 w-full h-full md:rounded-lg md:w-full md:max-w-6xl md:max-h-[90vh] overflow-hidden flex flex-col">
+
+        {/* ============ MOBILE VIEW ============ */}
+        <div className="flex flex-col h-full md:hidden">
+          <div className="flex items-center justify-between p-3 border-b border-gray-700">
+            <div className="flex items-center gap-2 min-w-0">
+              <ArrowLeftRight size={20} className="text-blue-400 flex-shrink-0" />
+              <h2 className="font-bold truncate">Trade with {receiverUsername}</h2>
+            </div>
+            <button onClick={onClose} className="p-2 -mr-2 active:bg-gray-700 rounded-lg">
+              <X size={20} />
+            </button>
+          </div>
+
+          <div className="p-3 border-b border-gray-700">
+            <label className="flex items-center gap-3 cursor-pointer">
+              <div
+                className={`relative w-12 h-6 rounded-full transition-colors ${
+                  isGiftMode ? 'bg-purple-600' : 'bg-gray-600'
+                }`}
+                onClick={() => setIsGiftMode(!isGiftMode)}
+              >
+                <div
+                  className={`absolute top-1 w-4 h-4 bg-white rounded-full transition-transform ${
+                    isGiftMode ? 'translate-x-7' : 'translate-x-1'
+                  }`}
+                />
+              </div>
+              <div className="flex items-center gap-2">
+                <Gift size={18} className={isGiftMode ? 'text-purple-400' : 'text-gray-400'} />
+                <span className={`text-sm ${isGiftMode ? 'text-purple-400' : 'text-gray-400'}`}>
+                  Gift (I don't want anything back)
+                </span>
+              </div>
+            </label>
+          </div>
+
+          <div className="flex items-center justify-center gap-2 p-2 bg-gray-900/50">
+            {!isGiftMode && (
+              <>
+                <div className={`w-2 h-2 rounded-full ${mobileStep === 'want' ? 'bg-blue-500' : 'bg-gray-600'}`} />
+                <span className={`text-xs ${mobileStep === 'want' ? 'text-blue-400' : 'text-gray-500'}`}>I Want</span>
+                <ArrowRight size={14} className="text-gray-500" />
+              </>
+            )}
+            <div className={`w-2 h-2 rounded-full ${mobileStep === 'give' ? 'bg-green-500' : 'bg-gray-600'}`} />
+            <span className={`text-xs ${mobileStep === 'give' ? 'text-green-400' : 'text-gray-500'}`}>I Give</span>
+            <ArrowRight size={14} className="text-gray-500" />
+            <div className={`w-2 h-2 rounded-full ${mobileStep === 'review' ? 'bg-purple-500' : 'bg-gray-600'}`} />
+            <span className={`text-xs ${mobileStep === 'review' ? 'text-purple-400' : 'text-gray-500'}`}>Review</span>
+          </div>
+
+          <div className="flex-1 overflow-y-auto p-3">
+            {mobileStep === 'want' && !isGiftMode && (
+              <div>
+                <h3 className="text-sm font-semibold text-blue-400 mb-3">
+                  Select cards from {receiverUsername}'s collection
+                </h3>
+                <CollectionGrid
+                  items={receiverCollection}
+                  selectedCards={wantedCards}
+                  onAdd={addToWanted}
+                  onRemove={removeFromWanted}
+                  emptyMessage="Their collection is empty"
+                  selectionColor="blue"
+                  searchValue={theirCollectionSearch}
+                  onSearchChange={setTheirCollectionSearch}
+                  searchPlaceholder="Search their cards..."
+                />
+              </div>
+            )}
+
+            {mobileStep === 'give' && (
+              <div>
+                <h3 className="text-sm font-semibold text-green-400 mb-3">
+                  Select cards to {isGiftMode ? 'gift' : 'offer'}
+                </h3>
+                <CollectionGrid
+                  items={myCollection}
+                  selectedCards={myOfferedCards}
+                  onAdd={addToOffer}
+                  onRemove={removeFromOffer}
+                  emptyMessage="Your collection is empty"
+                  selectionColor="green"
+                  searchValue={myCollectionSearch}
+                  onSearchChange={setMyCollectionSearch}
+                  searchPlaceholder="Search my cards..."
+                />
+              </div>
+            )}
+
+            {mobileStep === 'review' && (
+              <div className="space-y-4">
+                <h3 className="text-sm font-semibold text-purple-400">Review Trade</h3>
+                <div className="bg-gray-900/50 rounded-lg p-3 space-y-3">
+                  <SelectedCardsSummary
+                    cards={myOfferedCards}
+                    onRemove={removeFromOffer}
+                    label="I Give"
+                    emptyLabel="Nothing (requesting cards)"
+                    color="green"
+                  />
+                  {!isGiftMode && (
+                    <SelectedCardsSummary
+                      cards={wantedCards}
+                      onRemove={removeFromWanted}
+                      label="I Want"
+                      emptyLabel="Nothing (sending gift)"
+                      color="blue"
+                    />
+                  )}
+                </div>
+                <div>
+                  <label className="text-xs text-gray-400 mb-1 block">Message (optional)</label>
+                  <input
+                    type="text"
+                    value={message}
+                    onChange={(e) => setMessage(e.target.value)}
+                    placeholder="Add a message..."
+                    className="w-full px-3 py-2 bg-gray-700 border border-gray-600 rounded-lg text-sm focus:ring-2 focus:ring-blue-500 focus:border-transparent"
+                  />
+                </div>
+              </div>
+            )}
+          </div>
+
+          <div className="border-t border-gray-700 p-3 flex gap-2">
+            {(mobileStep !== 'want' && !isGiftMode) || (mobileStep !== 'give' && isGiftMode) ? (
+              <button
+                onClick={goToPrevStep}
+                disabled={mobileStep === 'give' && isGiftMode}
+                className="flex items-center justify-center gap-1 px-4 py-2.5 bg-gray-700 active:bg-gray-600 disabled:opacity-50 rounded-lg flex-1"
+              >
+                <ArrowLeft size={18} />
+                Back
+              </button>
+            ) : (
+              <button
+                onClick={onClose}
+                className="flex items-center justify-center gap-1 px-4 py-2.5 bg-gray-700 active:bg-gray-600 rounded-lg flex-1"
+              >
+                Cancel
+              </button>
+            )}
+
+            {mobileStep === 'review' ? (
+              <button
+                onClick={handleSubmit}
+                disabled={submitting || !canSubmit}
+                className="flex items-center justify-center gap-2 px-4 py-2.5 bg-blue-600 active:bg-blue-700 disabled:bg-gray-600 rounded-lg flex-1"
+              >
+                {submitting ? (
+                  <Loader2 className="animate-spin" size={18} />
+                ) : isGift ? (
+                  <>
+                    <Gift size={18} />
+                    Send Gift
+                  </>
+                ) : isRequest ? (
+                  <>
+                    <Send size={18} />
+                    Request
+                  </>
+                ) : (
+                  <>
+                    <Send size={18} />
+                    Send Trade
+                  </>
+                )}
+              </button>
+            ) : (
+              <button
+                onClick={goToNextStep}
+                className="flex items-center justify-center gap-1 px-4 py-2.5 bg-blue-600 active:bg-blue-700 rounded-lg flex-1"
+              >
+                Next
+                <ArrowRight size={18} />
+              </button>
+            )}
+          </div>
+        </div>
+
+        {/* ============ DESKTOP VIEW ============ */}
+        <div className="hidden md:flex md:flex-col h-full">
+          <div className="flex items-center justify-between p-4 border-b border-gray-700">
+            <div className="flex items-center gap-3">
+              <ArrowLeftRight size={24} className="text-blue-400" />
+              <h2 className="text-xl font-bold">{editMode ? 'Edit Trade' : `Trade with ${receiverUsername}`}</h2>
+              <label className="flex items-center gap-2 ml-4 cursor-pointer">
+                <div
+                  className={`relative w-10 h-5 rounded-full transition-colors ${
+                    isGiftMode ? 'bg-purple-600' : 'bg-gray-600'
+                  }`}
+                  onClick={() => setIsGiftMode(!isGiftMode)}
+                >
+                  <div
+                    className={`absolute top-0.5 w-4 h-4 bg-white rounded-full transition-transform ${
+                      isGiftMode ? 'translate-x-5' : 'translate-x-0.5'
+                    }`}
+                  />
+                </div>
+                <Gift size={16} className={isGiftMode ? 'text-purple-400' : 'text-gray-400'} />
+                <span className={`text-sm ${isGiftMode ? 'text-purple-400' : 'text-gray-400'}`}>Gift mode</span>
+              </label>
+            </div>
+            <button onClick={onClose} className="p-2 hover:bg-gray-700 rounded-lg transition">
+              <X size={24} />
+            </button>
+          </div>
+
+          <div className="flex-1 overflow-hidden flex">
+            <div className="flex-1 p-4 border-r border-gray-700 overflow-y-auto">
+              <h3 className="text-lg font-semibold mb-3 text-green-400">My Collection (I give)</h3>
+              <CollectionGrid
+                items={myCollection}
+                selectedCards={myOfferedCards}
+                onAdd={addToOffer}
+                onRemove={removeFromOffer}
+                emptyMessage="Your collection is empty"
+                selectionColor="green"
+                searchValue={myCollectionSearch}
+                onSearchChange={setMyCollectionSearch}
+                searchPlaceholder="Search my cards..."
+              />
+            </div>
+
+            {!isGiftMode && (
+              <div className="flex-1 p-4 overflow-y-auto">
+                <h3 className="text-lg font-semibold mb-3 text-blue-400">
+                  {receiverUsername}'s Collection (I want)
+                </h3>
+                <CollectionGrid
+                  items={receiverCollection}
+                  selectedCards={wantedCards}
+                  onAdd={addToWanted}
+                  onRemove={removeFromWanted}
+                  emptyMessage="Their collection is empty"
+                  selectionColor="blue"
+                  searchValue={theirCollectionSearch}
+                  onSearchChange={setTheirCollectionSearch}
+                  searchPlaceholder="Search their cards..."
+                />
+              </div>
+            )}
+          </div>
+
+          <div className="border-t border-gray-700 p-4">
+            <div className="flex gap-6 mb-4">
+              <SelectedCardsSummary
+                cards={myOfferedCards}
+                onRemove={removeFromOffer}
+                label="I Give"
+                emptyLabel="Nothing selected (gift request)"
+                color="green"
+              />
+              {!isGiftMode && (
+                <SelectedCardsSummary
+                  cards={wantedCards}
+                  onRemove={removeFromWanted}
+                  label="I Want"
+                  emptyLabel="Nothing selected (gift)"
+                  color="blue"
+                />
+              )}
+            </div>
+
+            <div className="flex items-center gap-4 mb-4">
+              <input
+                type="text"
+                value={message}
+                onChange={(e) => setMessage(e.target.value)}
+                placeholder="Add a message (optional)"
+                className="flex-1 px-4 py-2 bg-gray-700 border border-gray-600 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent"
+              />
+              <button
+                onClick={onClose}
+                className="px-4 py-2 bg-gray-700 hover:bg-gray-600 rounded-lg transition"
+              >
+                Cancel
+              </button>
+              <button
+                onClick={handleSubmit}
+                disabled={submitting || !canSubmit}
+                className="flex items-center gap-2 px-6 py-2 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 rounded-lg transition"
+              >
+                {submitting ? (
+                  <Loader2 className="animate-spin" size={20} />
+                ) : isGift ? (
+                  <>
+                    <Gift size={20} />
+                    Send Gift
+                  </>
+                ) : isRequest ? (
+                  <>
+                    <Send size={20} />
+                    Request Cards
+                  </>
+                ) : (
+                  <>
+                    <Send size={20} />
+                    Propose Trade
+                  </>
+                )}
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

src/components/TradeDetail.tsx

@@ -0,0 +1,486 @@
+import React, { useState, useEffect } from 'react';
+import { X, Check, ArrowLeftRight, DollarSign, Loader2, Edit, RefreshCcw, History, AlertTriangle } from 'lucide-react';
+import { useAuth } from '../contexts/AuthContext';
+import { useToast } from '../contexts/ToastContext';
+import { Trade, TradeHistoryEntry, getTradeVersionHistory } from '../services/tradesService';
+import { getUserCollection, getCardsByIds } from '../services/api';
+import { Card } from '../types';
+import TradeCreator from './TradeCreator';
+
+interface TradeDetailProps {
+  trade: Trade;
+  onClose: () => void;
+  onAccept: (tradeId: string) => Promise<void>;
+  onDecline: (tradeId: string) => Promise<void>;
+  onTradeUpdated: () => void;
+}
+
+interface TradeCardItem {
+  card: Card;
+  quantity: number;
+}
+
+interface CollectionItem {
+  card: Card;
+  quantity: number;
+}
+
+function calculateTotalPrice(items: TradeCardItem[]): number {
+  return items.reduce((total, { card, quantity }) => {
+    const price = card.prices?.usd ? parseFloat(card.prices.usd) : 0;
+    return total + (price * quantity);
+  }, 0);
+}
+
+export default function TradeDetail({
+  trade,
+  onClose,
+  onAccept,
+  onDecline,
+  onTradeUpdated,
+}: TradeDetailProps) {
+  const { user } = useAuth();
+  const toast = useToast();
+  const [loading, setLoading] = useState(true);
+  const [processing, setProcessing] = useState(false);
+  const [senderCards, setSenderCards] = useState<TradeCardItem[]>([]);
+  const [receiverCards, setReceiverCards] = useState<TradeCardItem[]>([]);
+  const [showHistory, setShowHistory] = useState(false);
+  const [history, setHistory] = useState<TradeHistoryEntry[]>([]);
+  const [showEditMode, setShowEditMode] = useState(false);
+  const [editReceiverCollection, setEditReceiverCollection] = useState<CollectionItem[]>([]);
+
+  const isUser1 = trade.user1_id === user?.id;
+  const isUser2 = trade.user2_id === user?.id;
+  const otherUser = isUser1 ? trade.user2 : trade.user1;
+  const myUserId = user?.id || '';
+  const otherUserId = isUser1 ? trade.user2_id : trade.user1_id;
+
+  useEffect(() => {
+    loadTradeCards();
+    loadTradeHistory();
+  }, [trade]);
+
+  const loadTradeCards = async () => {
+    setLoading(true);
+    try {
+      const allCardIds = trade.items?.map(item => item.card_id) || [];
+      if (allCardIds.length === 0) {
+        setSenderCards([]);
+        setReceiverCards([]);
+        return;
+      }
+
+      const cards = await getCardsByIds(allCardIds);
+      const cardMap = new Map<string, Card>();
+      cards.forEach(card => cardMap.set(card.id, card));
+
+      const myItems: TradeCardItem[] = [];
+      const theirItems: TradeCardItem[] = [];
+
+      trade.items?.forEach(item => {
+        const card = cardMap.get(item.card_id);
+        if (!card) return;
+
+        if (item.owner_id === myUserId) {
+          myItems.push({ card, quantity: item.quantity });
+        } else {
+          theirItems.push({ card, quantity: item.quantity });
+        }
+      });
+
+      setSenderCards(myItems);
+      setReceiverCards(theirItems);
+    } catch (error) {
+      console.error('Error loading trade cards:', error);
+      toast.error('Failed to load trade details');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loadTradeHistory = async () => {
+    try {
+      const historyData = await getTradeVersionHistory(trade.id);
+      setHistory(historyData);
+    } catch (error) {
+      console.error('Error loading trade history:', error);
+    }
+  };
+
+  const handleAccept = async () => {
+    setProcessing(true);
+    try {
+      await onAccept(trade.id);
+      onClose();
+    } catch (error) {
+      console.error('Error accepting trade:', error);
+    } finally {
+      setProcessing(false);
+    }
+  };
+
+  const handleDecline = async () => {
+    setProcessing(true);
+    try {
+      await onDecline(trade.id);
+      onClose();
+    } catch (error) {
+      console.error('Error declining trade:', error);
+    } finally {
+      setProcessing(false);
+    }
+  };
+
+  const handleEdit = async () => {
+    try {
+      // Load the other user's collection for editing
+      const collectionMap = await getUserCollection(otherUserId);
+      const cardIds = Array.from(collectionMap.keys());
+      const cards = await getCardsByIds(cardIds);
+      const collection = cards.map((card) => ({
+        card,
+        quantity: collectionMap.get(card.id) || 0,
+      }));
+
+      setEditReceiverCollection(collection);
+      setShowEditMode(true);
+    } catch (error) {
+      console.error('Error loading collection for edit:', error);
+      toast.error('Failed to load collection');
+    }
+  };
+
+  // In the symmetric model, counter-offer is the same as edit
+  const handleCounterOffer = handleEdit;
+
+  // senderCards = myCards, receiverCards = theirCards (already calculated correctly)
+  const yourCards = senderCards;
+  const theirCards = receiverCards;
+  const yourPrice = calculateTotalPrice(yourCards);
+  const theirPrice = calculateTotalPrice(theirCards);
+
+  // For edit mode, pre-populate with current cards
+  // In the symmetric model, both edit and counter-offer use the same perspective:
+  // - Your cards (what you're offering)
+  // - Their cards (what you want)
+  // Include quantity in the card object so TradeCreator can preserve it
+  const editInitialSenderCards = yourCards.map(c => ({ ...c.card, quantity: c.quantity }));
+  const editInitialReceiverCards = theirCards.map(c => ({ ...c.card, quantity: c.quantity }));
+
+  if (showEditMode) {
+    return (
+      <TradeCreator
+        receiverId={otherUserId}
+        receiverUsername={otherUser?.username || 'User'}
+        receiverCollection={editReceiverCollection}
+        onClose={() => {
+          setShowEditMode(false);
+          onClose();
+        }}
+        onTradeCreated={() => {
+          setShowEditMode(false);
+          onTradeUpdated();
+          onClose();
+        }}
+        editMode={true}
+        existingTradeId={trade.id}
+        initialSenderCards={editInitialSenderCards}
+        initialReceiverCards={editInitialReceiverCards}
+        initialMessage={trade.message || ''}
+      />
+    );
+  }
+
+  return (
+    <div className="fixed inset-0 bg-black/80 backdrop-blur-sm z-50 flex items-end md:items-center justify-center p-0 md:p-4">
+      <div className="bg-gray-900 w-full md:max-w-4xl md:rounded-2xl flex flex-col max-h-screen md:max-h-[90vh]">
+        {/* Header */}
+        <div className="flex items-center justify-between p-4 border-b border-gray-800">
+          <div className="flex items-center gap-2">
+            <ArrowLeftRight size={20} className="text-blue-400" />
+            <div>
+              <h2 className="text-lg font-bold">Trade Details {trade.version > 1 && `(v${trade.version})`}</h2>
+              <p className="text-sm text-gray-400">
+                With: {otherUser?.username}
+              </p>
+            </div>
+          </div>
+          <button
+            onClick={onClose}
+            className="p-2 hover:bg-gray-800 rounded-lg transition"
+          >
+            <X size={20} />
+          </button>
+        </div>
+
+        {/* Content */}
+        <div className="flex-1 overflow-y-auto p-4">
+          {loading ? (
+            <div className="flex items-center justify-center py-12">
+              <Loader2 className="animate-spin text-blue-500" size={48} />
+            </div>
+          ) : (
+            <div className="space-y-4">
+              {/* Invalid Trade Warning */}
+              {trade.status === 'pending' && !trade.is_valid && (
+                <div className="bg-red-900/30 border border-red-600 rounded-lg p-3 flex items-start gap-2">
+                  <AlertTriangle size={20} className="text-red-400 flex-shrink-0 mt-0.5" />
+                  <div>
+                    <h4 className="font-semibold text-red-400 text-sm">Trade No Longer Valid</h4>
+                    <p className="text-red-200 text-xs mt-1">
+                      One or more cards in this trade are no longer available in the required quantities. This trade cannot be accepted until it is updated.
+                    </p>
+                  </div>
+                </div>
+              )}
+              <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
+                {/* Your Side */}
+                <div className="space-y-3">
+                  <div className="flex items-center justify-between">
+                    <h3 className="font-semibold text-green-400">
+                      You Give
+                    </h3>
+                    <div className="flex items-center gap-1 text-green-400 text-sm">
+                      <DollarSign size={14} />
+                      {yourPrice.toFixed(2)}
+                    </div>
+                  </div>
+
+                  {yourCards.length === 0 ? (
+                    <p className="text-gray-500 text-center py-8">Gift (no cards)</p>
+                  ) : (
+                    <div className="grid grid-cols-3 sm:grid-cols-4 gap-2">
+                      {yourCards.map((item, idx) => (
+                        <div key={idx} className="relative rounded-lg overflow-hidden">
+                          <img
+                            src={item.card.image_uris?.small || item.card.image_uris?.normal}
+                            alt={item.card.name}
+                            className="w-full h-auto"
+                          />
+                          {item.quantity > 1 && (
+                            <div className="absolute top-1 right-1 bg-green-600 text-white text-xs px-1.5 py-0.5 rounded font-semibold">
+                              x{item.quantity}
+                            </div>
+                          )}
+                          {item.card.prices?.usd && (
+                            <div className="absolute bottom-1 left-1 bg-gray-900/90 text-white text-[10px] px-1 py-0.5 rounded">
+                              ${item.card.prices.usd}
+                            </div>
+                          )}
+                        </div>
+                      ))}
+                    </div>
+                  )}
+                </div>
+
+                {/* Their Side */}
+                <div className="space-y-3">
+                  <div className="flex items-center justify-between">
+                    <h3 className="font-semibold text-blue-400">
+                      You Receive
+                    </h3>
+                    <div className="flex items-center gap-1 text-blue-400 text-sm">
+                      <DollarSign size={14} />
+                      {theirPrice.toFixed(2)}
+                    </div>
+                  </div>
+
+                  {theirCards.length === 0 ? (
+                    <p className="text-gray-500 text-center py-8">Gift (no cards)</p>
+                  ) : (
+                    <div className="grid grid-cols-3 sm:grid-cols-4 gap-2">
+                      {theirCards.map((item, idx) => (
+                        <div key={idx} className="relative rounded-lg overflow-hidden">
+                          <img
+                            src={item.card.image_uris?.small || item.card.image_uris?.normal}
+                            alt={item.card.name}
+                            className="w-full h-auto"
+                          />
+                          {item.quantity > 1 && (
+                            <div className="absolute top-1 right-1 bg-blue-600 text-white text-xs px-1.5 py-0.5 rounded font-semibold">
+                              x{item.quantity}
+                            </div>
+                          )}
+                          {item.card.prices?.usd && (
+                            <div className="absolute bottom-1 left-1 bg-gray-900/90 text-white text-[10px] px-1 py-0.5 rounded">
+                              ${item.card.prices.usd}
+                            </div>
+                          )}
+                        </div>
+                      ))}
+                    </div>
+                  )}
+                </div>
+              </div>
+
+              {/* Message */}
+              {trade.message && (
+                <div className="p-3 bg-gray-800 rounded-lg">
+                  <p className="text-sm text-gray-400 mb-1">Message:</p>
+                  <p className="text-sm">{trade.message}</p>
+                </div>
+              )}
+
+              {/* Price Difference */}
+              {!loading && (yourPrice > 0 || theirPrice > 0) && (
+                <div className="p-3 bg-gray-800 rounded-lg">
+                  <div className="flex items-center justify-between text-sm">
+                    <span className="text-gray-400">Value Difference:</span>
+                    <span className={Math.abs(yourPrice - theirPrice) > 5 ? 'text-yellow-400' : 'text-gray-300'}>
+                      ${Math.abs(yourPrice - theirPrice).toFixed(2)}
+                      {yourPrice > theirPrice ? ' in your favor' : yourPrice < theirPrice ? ' in their favor' : ' (balanced)'}
+                    </span>
+                  </div>
+                </div>
+              )}
+
+              {/* History */}
+              {history.length > 0 && (
+                <div>
+                  <button
+                    onClick={() => setShowHistory(!showHistory)}
+                    className="flex items-center gap-2 text-sm text-blue-400 hover:text-blue-300"
+                  >
+                    <History size={16} />
+                    {showHistory ? 'Hide' : 'Show'} History ({history.length} {history.length === 1 ? 'version' : 'versions'})
+                  </button>
+
+                  {showHistory && (
+                    <div className="mt-3 space-y-2">
+                      {history.map((entry) => (
+                        <div key={entry.id} className="p-3 bg-gray-800 rounded-lg text-sm">
+                          <div className="flex items-center justify-between mb-2">
+                            <span className="font-semibold text-purple-400">Version {entry.version}</span>
+                            <span className="text-gray-400 text-xs">
+                              Edited by {entry.editor?.username} • {new Date(entry.created_at).toLocaleDateString()}
+                            </span>
+                          </div>
+                          {entry.message && (
+                            <p className="text-gray-300 text-xs">{entry.message}</p>
+                          )}
+                        </div>
+                      ))}
+                    </div>
+                  )}
+                </div>
+              )}
+            </div>
+          )}
+        </div>
+
+        {/* Actions - Only for pending trades */}
+        {trade.status === 'pending' && !loading && (
+          <div className="border-t border-gray-800 p-4 space-y-2">
+            {/* Only the user who DIDN'T make the last edit can respond */}
+            {trade.editor_id && trade.editor_id !== user?.id ? (
+              /* User receives the last edit - can accept/decline/counter */
+              <>
+                <div className="flex gap-2">
+                  <button
+                    onClick={handleAccept}
+                    disabled={processing || !trade.is_valid}
+                    className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg font-medium transition"
+                    title={!trade.is_valid ? 'This trade is no longer valid' : ''}
+                  >
+                    {processing ? (
+                      <Loader2 className="animate-spin" size={18} />
+                    ) : (
+                      <>
+                        <Check size={18} />
+                        Accept Trade
+                      </>
+                    )}
+                  </button>
+                  <button
+                    onClick={handleDecline}
+                    disabled={processing}
+                    className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-red-600 hover:bg-red-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                  >
+                    <X size={18} />
+                    Decline
+                  </button>
+                </div>
+                <button
+                  onClick={handleCounterOffer}
+                  disabled={processing}
+                  className="w-full flex items-center justify-center gap-2 px-4 py-3 bg-purple-600 hover:bg-purple-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                >
+                  <RefreshCcw size={18} />
+                  Make Counter Offer
+                </button>
+              </>
+            ) : trade.editor_id === user?.id ? (
+              /* User made the last edit - can still edit while waiting for response */
+              <>
+                <p className="text-center text-gray-400 text-sm py-2">
+                  Waiting for {otherUser?.username} to respond...
+                </p>
+                <button
+                  onClick={handleEdit}
+                  disabled={processing}
+                  className="w-full flex items-center justify-center gap-2 px-4 py-3 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                >
+                  <Edit size={18} />
+                  Modify Your Offer
+                </button>
+              </>
+            ) : (
+              /* No editor yet (initial trade) */
+              <>
+                {isUser1 ? (
+                  /* User1 (initiator) can edit their initial offer */
+                  <button
+                    onClick={handleEdit}
+                    disabled={processing}
+                    className="w-full flex items-center justify-center gap-2 px-4 py-3 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                  >
+                    <Edit size={18} />
+                    Edit Trade Offer
+                  </button>
+                ) : (
+                  /* User2 (partner) can accept/decline/counter */
+                  <>
+                    <div className="flex gap-2">
+                      <button
+                        onClick={handleAccept}
+                        disabled={processing || !trade.is_valid}
+                        className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg font-medium transition"
+                        title={!trade.is_valid ? 'This trade is no longer valid' : ''}
+                      >
+                        {processing ? (
+                          <Loader2 className="animate-spin" size={18} />
+                        ) : (
+                          <>
+                            <Check size={18} />
+                            Accept Trade
+                          </>
+                        )}
+                      </button>
+                      <button
+                        onClick={handleDecline}
+                        disabled={processing}
+                        className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-red-600 hover:bg-red-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                      >
+                        <X size={18} />
+                        Decline
+                      </button>
+                    </div>
+                    <button
+                      onClick={handleCounterOffer}
+                      disabled={processing}
+                      className="w-full flex items-center justify-center gap-2 px-4 py-3 bg-purple-600 hover:bg-purple-700 disabled:bg-gray-600 rounded-lg font-medium transition"
+                    >
+                      <RefreshCcw size={18} />
+                      Make Counter Offer
+                    </button>
+                  </>
+                )}
+              </>
+            )}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

src/contexts/AuthContext.tsx

@@ -35,8 +35,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
             .from('profiles')
             .upsert(
               {
-                id: session.user.id,
-                theme_color: 'blue' // Default theme color
+                id: session.user.id
               },
               { onConflict: 'id' }
             );
@@ -65,8 +64,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
         const { error: profileError } = await supabase
           .from('profiles')
           .insert({
-            id: data.user!.id,
-            theme_color: 'blue' // Default theme color
+            id: data.user!.id
           });
 
         if (profileError) {

src/contexts/ToastContext.tsx

@@ -0,0 +1,100 @@
+import React, { createContext, useContext, useState, useCallback } from 'react';
+import { CheckCircle, XCircle, AlertCircle, Info, X } from 'lucide-react';
+
+type ToastType = 'success' | 'error' | 'warning' | 'info';
+
+interface Toast {
+  id: string;
+  message: string;
+  type: ToastType;
+}
+
+interface ToastContextType {
+  showToast: (message: string, type?: ToastType) => void;
+  success: (message: string) => void;
+  error: (message: string) => void;
+  warning: (message: string) => void;
+  info: (message: string) => void;
+}
+
+const ToastContext = createContext<ToastContextType | undefined>(undefined);
+
+export function useToast() {
+  const context = useContext(ToastContext);
+  if (!context) {
+    throw new Error('useToast must be used within a ToastProvider');
+  }
+  return context;
+}
+
+export function ToastProvider({ children }: { children: React.ReactNode }) {
+  const [toasts, setToasts] = useState<Toast[]>([]);
+
+  const removeToast = useCallback((id: string) => {
+    setToasts((prev) => prev.filter((t) => t.id !== id));
+  }, []);
+
+  const showToast = useCallback((message: string, type: ToastType = 'info') => {
+    const id = Math.random().toString(36).substring(7);
+    setToasts((prev) => [...prev, { id, message, type }]);
+
+    // Auto remove after 4 seconds
+    setTimeout(() => removeToast(id), 4000);
+  }, [removeToast]);
+
+  const success = useCallback((message: string) => showToast(message, 'success'), [showToast]);
+  const error = useCallback((message: string) => showToast(message, 'error'), [showToast]);
+  const warning = useCallback((message: string) => showToast(message, 'warning'), [showToast]);
+  const info = useCallback((message: string) => showToast(message, 'info'), [showToast]);
+
+  const getIcon = (type: ToastType) => {
+    switch (type) {
+      case 'success':
+        return <CheckCircle size={20} />;
+      case 'error':
+        return <XCircle size={20} />;
+      case 'warning':
+        return <AlertCircle size={20} />;
+      case 'info':
+        return <Info size={20} />;
+    }
+  };
+
+  const getStyles = (type: ToastType) => {
+    switch (type) {
+      case 'success':
+        return 'bg-green-600';
+      case 'error':
+        return 'bg-red-600';
+      case 'warning':
+        return 'bg-yellow-600';
+      case 'info':
+        return 'bg-blue-600';
+    }
+  };
+
+  return (
+    <ToastContext.Provider value={{ showToast, success, error, warning, info }}>
+      {children}
+
+      {/* Toast Container */}
+      <div className="fixed bottom-4 right-4 z-[100] flex flex-col gap-2">
+        {toasts.map((toast) => (
+          <div
+            key={toast.id}
+            className={`${getStyles(toast.type)} text-white px-4 py-3 rounded-lg shadow-lg flex items-center gap-3 min-w-[280px] animate-slide-in-right`}
+          >
+            {getIcon(toast.type)}
+            <span className="flex-1">{toast.message}</span>
+            <button
+              onClick={() => removeToast(toast.id)}
+              className="text-white/80 hover:text-white"
+            >
+              <X size={18} />
+            </button>
+          </div>
+        ))}
+      </div>
+    </ToastContext.Provider>
+  );
+}

src/examples/CollectionIntegrationExample.tsx

@@ -0,0 +1,412 @@
+/**
+ * EXAMPLE FILE - Collection Integration Examples
+ *
+ * This file demonstrates how to integrate the collection service
+ * into your components. These are complete, working examples that
+ * can be used as templates for implementing the collection features.
+ *
+ * DO NOT DELETE - Reference for frontend integration
+ */
+
+import React, { useState, useEffect } from 'react';
+import { useCollection } from '../hooks/useCollection';
+import { CardOwnershipInfo, MissingCardInfo } from '../services/collectionService';
+import { Card } from '../types';
+import { Plus, CheckCircle, AlertCircle } from 'lucide-react';
+
+/**
+ * Example 1: Display Missing Cards Badge
+ * Shows a badge indicating how many cards are missing from collection
+ */
+export function MissingCardsBadge({ deckId }: { deckId: string }) {
+  const { getMissingCards, loading } = useCollection();
+  const [missingCount, setMissingCount] = useState(0);
+
+  useEffect(() => {
+    const fetchMissing = async () => {
+      const missing = await getMissingCards(deckId);
+      if (missing) {
+        setMissingCount(missing.length);
+      }
+    };
+    fetchMissing();
+  }, [deckId, getMissingCards]);
+
+  if (loading) return <span className="text-gray-400">...</span>;
+
+  return missingCount > 0 ? (
+    <span className="bg-red-500 text-white px-2 py-1 rounded text-sm">
+      {missingCount} cards missing
+    </span>
+  ) : (
+    <span className="bg-green-500 text-white px-2 py-1 rounded text-sm flex items-center gap-1">
+      <CheckCircle size={16} />
+      Complete
+    </span>
+  );
+}
+
+/**
+ * Example 2: Card Ownership Indicator
+ * Shows whether a specific card is owned and in what quantity
+ */
+interface CardOwnershipIndicatorProps {
+  cardId: string;
+  quantityNeeded: number;
+}
+
+export function CardOwnershipIndicator({ cardId, quantityNeeded }: CardOwnershipIndicatorProps) {
+  const { checkCardOwnership } = useCollection();
+  const [owned, setOwned] = useState(0);
+
+  useEffect(() => {
+    const check = async () => {
+      const card = await checkCardOwnership(cardId);
+      setOwned(card?.quantity || 0);
+    };
+    check();
+  }, [cardId, checkCardOwnership]);
+
+  const hasEnough = owned >= quantityNeeded;
+
+  return (
+    <div className={`flex items-center gap-2 ${hasEnough ? 'text-green-500' : 'text-red-500'}`}>
+      {hasEnough ? <CheckCircle size={16} /> : <AlertCircle size={16} />}
+      <span>
+        {owned} / {quantityNeeded} owned
+      </span>
+    </div>
+  );
+}
+
+/**
+ * Example 3: Add Single Card Button
+ * Button to add a specific card to collection
+ */
+interface AddCardButtonProps {
+  cardId: string;
+  cardName: string;
+  quantity?: number;
+  onSuccess?: () => void;
+}
+
+export function AddCardButton({ cardId, cardName, quantity = 1, onSuccess }: AddCardButtonProps) {
+  const { addCard, loading, error, clearError } = useCollection();
+
+  const handleAdd = async () => {
+    clearError();
+    const success = await addCard(cardId, quantity);
+    if (success) {
+      alert(`Added ${quantity}x ${cardName} to collection!`);
+      onSuccess?.();
+    }
+  };
+
+  return (
+    <div>
+      <button
+        onClick={handleAdd}
+        disabled={loading}
+        className="px-4 py-2 bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center gap-2"
+      >
+        <Plus size={16} />
+        {loading ? 'Adding...' : `Add ${quantity > 1 ? `${quantity}x ` : ''}to Collection`}
+      </button>
+      {error && <p className="text-red-500 text-sm mt-1">{error}</p>}
+    </div>
+  );
+}
+
+/**
+ * Example 4: Add All Missing Cards Button
+ * Button to add all missing cards from a deck to collection
+ */
+export function AddAllMissingCardsButton({ deckId, onSuccess }: { deckId: string; onSuccess?: () => void }) {
+  const { addMissingDeckCards, loading, error, clearError } = useCollection();
+  const [lastResult, setLastResult] = useState<string | null>(null);
+
+  const handleAddAll = async () => {
+    clearError();
+    setLastResult(null);
+
+    const results = await addMissingDeckCards(deckId);
+
+    if (results) {
+      const successCount = results.filter(r => r.success).length;
+      const failCount = results.filter(r => !r.success).length;
+
+      let message = `Added ${successCount} cards to collection`;
+      if (failCount > 0) {
+        message += `, ${failCount} failed`;
+      }
+
+      setLastResult(message);
+
+      if (successCount > 0) {
+        onSuccess?.();
+      }
+    }
+  };
+
+  return (
+    <div>
+      <button
+        onClick={handleAddAll}
+        disabled={loading}
+        className="px-6 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg flex items-center gap-2 font-semibold"
+      >
+        {loading ? 'Adding Cards...' : 'Add All Missing Cards to Collection'}
+      </button>
+      {lastResult && <p className="text-green-400 text-sm mt-2">{lastResult}</p>}
+      {error && <p className="text-red-500 text-sm mt-2">{error}</p>}
+    </div>
+  );
+}
+
+/**
+ * Example 5: Deck Card List with Collection Status
+ * Shows all cards in a deck with their collection status
+ */
+interface DeckCardWithStatusProps {
+  deckId: string;
+  cards: Array<{ card: Card; quantity: number }>;
+}
+
+export function DeckCardListWithStatus({ deckId, cards }: DeckCardWithStatusProps) {
+  const { getDeckOwnership, loading } = useCollection();
+  const [ownership, setOwnership] = useState<CardOwnershipInfo[]>([]);
+
+  useEffect(() => {
+    const fetchOwnership = async () => {
+      const data = await getDeckOwnership(deckId);
+      if (data) setOwnership(data);
+    };
+    fetchOwnership();
+  }, [deckId, getDeckOwnership]);
+
+  if (loading) {
+    return <div className="text-gray-400">Loading collection status...</div>;
+  }
+
+  const ownershipMap = new Map(ownership.map(o => [o.card_id, o]));
+
+  return (
+    <div className="space-y-2">
+      {cards.map(({ card, quantity }) => {
+        const status = ownershipMap.get(card.id);
+        const isOwned = status?.owned || false;
+        const quantityOwned = status?.quantity_in_collection || 0;
+        const quantityNeeded = status?.quantity_needed || 0;
+
+        return (
+          <div key={card.id} className="flex items-center gap-4 bg-gray-800 p-4 rounded-lg">
+            <img
+              src={card.image_uris?.art_crop}
+              alt={card.name}
+              className="w-16 h-16 rounded object-cover"
+            />
+
+            <div className="flex-1">
+              <h3 className="font-semibold">{card.name}</h3>
+              <p className="text-sm text-gray-400">
+                Need: {quantity} | Owned: {quantityOwned}
+              </p>
+            </div>
+
+            <div className="flex items-center gap-2">
+              {isOwned ? (
+                <span className="text-green-500 flex items-center gap-1">
+                  <CheckCircle size={20} />
+                  Complete
+                </span>
+              ) : (
+                <>
+                  <span className="text-red-500 flex items-center gap-1">
+                    <AlertCircle size={20} />
+                    Need {quantityNeeded} more
+                  </span>
+                  <AddCardButton
+                    cardId={card.id}
+                    cardName={card.name}
+                    quantity={quantityNeeded}
+                  />
+                </>
+              )}
+            </div>
+          </div>
+        );
+      })}
+    </div>
+  );
+}
+
+/**
+ * Example 6: Bulk Add with Preview
+ * Shows missing cards and allows bulk add with preview
+ */
+export function BulkAddWithPreview({ deckId }: { deckId: string }) {
+  const { getMissingCards, addCardsBulk, loading, error } = useCollection();
+  const [missingCards, setMissingCards] = useState<MissingCardInfo[]>([]);
+  const [showPreview, setShowPreview] = useState(false);
+
+  useEffect(() => {
+    const fetchMissing = async () => {
+      const missing = await getMissingCards(deckId);
+      if (missing) setMissingCards(missing);
+    };
+    fetchMissing();
+  }, [deckId, getMissingCards]);
+
+  const handleBulkAdd = async () => {
+    const cardsToAdd = missingCards.map(card => ({
+      card_id: card.card_id,
+      quantity: card.quantity_needed,
+    }));
+
+    const results = await addCardsBulk(cardsToAdd);
+
+    if (results) {
+      const successCount = results.filter(r => r.success).length;
+      alert(`Successfully added ${successCount} cards to collection!`);
+      setMissingCards([]);
+      setShowPreview(false);
+    }
+  };
+
+  if (missingCards.length === 0) {
+    return (
+      <div className="bg-green-500/10 border border-green-500 rounded-lg p-4 text-green-400">
+        All cards from this deck are in your collection!
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center justify-between">
+        <h3 className="text-xl font-bold">Missing Cards: {missingCards.length}</h3>
+        <button
+          onClick={() => setShowPreview(!showPreview)}
+          className="text-blue-400 hover:text-blue-300"
+        >
+          {showPreview ? 'Hide' : 'Show'} Preview
+        </button>
+      </div>
+
+      {showPreview && (
+        <div className="bg-gray-800 rounded-lg p-4 space-y-2">
+          {missingCards.map(card => (
+            <div key={card.card_id} className="flex justify-between text-sm">
+              <span>{card.card_id}</span>
+              <span className="text-gray-400">
+                Need {card.quantity_needed} (have {card.quantity_in_collection})
+              </span>
+            </div>
+          ))}
+        </div>
+      )}
+
+      <button
+        onClick={handleBulkAdd}
+        disabled={loading}
+        className="w-full px-6 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed rounded-lg font-semibold"
+      >
+        {loading ? 'Adding...' : `Add All ${missingCards.length} Missing Cards`}
+      </button>
+
+      {error && (
+        <div className="bg-red-500/10 border border-red-500 rounded-lg p-4 text-red-400">
+          {error}
+        </div>
+      )}
+    </div>
+  );
+}
+
+/**
+ * Example 7: Complete Deck Editor Integration
+ * Full example of a deck editor with collection integration
+ */
+interface CompleteDeckEditorExampleProps {
+  deckId: string;
+  deckName: string;
+  cards: Array<{ card: Card; quantity: number }>;
+}
+
+export function CompleteDeckEditorExample({ deckId, deckName, cards }: CompleteDeckEditorExampleProps) {
+  const { getDeckOwnership, addMissingDeckCards, loading } = useCollection();
+  const [ownership, setOwnership] = useState<CardOwnershipInfo[]>([]);
+  const [refreshKey, setRefreshKey] = useState(0);
+
+  useEffect(() => {
+    const fetchOwnership = async () => {
+      const data = await getDeckOwnership(deckId);
+      if (data) setOwnership(data);
+    };
+    fetchOwnership();
+  }, [deckId, getDeckOwnership, refreshKey]);
+
+  const handleRefresh = () => setRefreshKey(prev => prev + 1);
+
+  const missingCount = ownership.filter(o => !o.owned).length;
+  const totalCards = cards.length;
+  const ownedCount = totalCards - missingCount;
+  const completionPercent = totalCards > 0 ? Math.round((ownedCount / totalCards) * 100) : 0;
+
+  return (
+    <div className="max-w-4xl mx-auto p-6 space-y-6">
+      {/* Header with stats */}
+      <div className="bg-gray-800 rounded-lg p-6">
+        <h1 className="text-3xl font-bold mb-4">{deckName}</h1>
+
+        <div className="grid grid-cols-3 gap-4 mb-4">
+          <div className="bg-gray-700 rounded p-3">
+            <div className="text-sm text-gray-400">Total Cards</div>
+            <div className="text-2xl font-bold">{totalCards}</div>
+          </div>
+          <div className="bg-gray-700 rounded p-3">
+            <div className="text-sm text-gray-400">Owned</div>
+            <div className="text-2xl font-bold text-green-500">{ownedCount}</div>
+          </div>
+          <div className="bg-gray-700 rounded p-3">
+            <div className="text-sm text-gray-400">Missing</div>
+            <div className="text-2xl font-bold text-red-500">{missingCount}</div>
+          </div>
+        </div>
+
+        {/* Progress bar */}
+        <div className="w-full bg-gray-700 rounded-full h-4 mb-4">
+          <div
+            className="bg-green-500 h-4 rounded-full transition-all"
+            style={{ width: `${completionPercent}%` }}
+          />
+        </div>
+
+        {/* Action buttons */}
+        <div className="flex gap-4">
+          {missingCount > 0 && (
+            <button
+              onClick={async () => {
+                await addMissingDeckCards(deckId);
+                handleRefresh();
+              }}
+              disabled={loading}
+              className="flex-1 px-6 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 rounded-lg font-semibold"
+            >
+              {loading ? 'Adding...' : `Add All ${missingCount} Missing Cards`}
+            </button>
+          )}
+          <button
+            onClick={handleRefresh}
+            className="px-6 py-3 bg-gray-700 hover:bg-gray-600 rounded-lg"
+          >
+            Refresh
+          </button>
+        </div>
+      </div>
+
+      {/* Card list */}
+      <DeckCardListWithStatus deckId={deckId} cards={cards} />
+    </div>
+  );
+}

src/hooks/useCollection.ts

@@ -0,0 +1,233 @@
+import { useState, useCallback } from 'react';
+import {
+  getUserCollection,
+  getCardInCollection,
+  checkCardsOwnership,
+  getDeckCardOwnership,
+  getMissingCardsFromDeck,
+  addCardToCollection,
+  addCardsToCollectionBulk,
+  addMissingDeckCardsToCollection,
+  removeCardFromCollection,
+  CollectionCard,
+  CardOwnershipInfo,
+  MissingCardInfo,
+} from '../services/collectionService';
+
+/**
+ * Custom React hook for managing card collections
+ * Provides state management and loading/error handling for collection operations
+ */
+export const useCollection = () => {
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  /**
+   * Clear any existing error
+   */
+  const clearError = useCallback(() => {
+    setError(null);
+  }, []);
+
+  /**
+   * Get user's entire collection
+   */
+  const getCollection = useCallback(async (): Promise<CollectionCard[] | null> => {
+    setLoading(true);
+    setError(null);
+    try {
+      const collection = await getUserCollection();
+      return collection;
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : 'Failed to fetch collection';
+      setError(errorMessage);
+      return null;
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  /**
+   * Check if a single card is in the collection
+   */
+  const checkCardOwnership = useCallback(async (cardId: string): Promise<CollectionCard | null> => {
+    setLoading(true);
+    setError(null);
+    try {
+      const card = await getCardInCollection(cardId);
+      return card;
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : 'Failed to check card ownership';
+      setError(errorMessage);
+      return null;
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  /**
+   * Check ownership for multiple cards
+   */
+  const checkMultipleCardsOwnership = useCallback(
+    async (cardIds: string[]): Promise<Map<string, number> | null> => {
+      setLoading(true);
+      setError(null);
+      try {
+        const ownershipMap = await checkCardsOwnership(cardIds);
+        return ownershipMap;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to check cards ownership';
+        setError(errorMessage);
+        return null;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Get detailed ownership info for all cards in a deck
+   */
+  const getDeckOwnership = useCallback(
+    async (deckId: string): Promise<CardOwnershipInfo[] | null> => {
+      setLoading(true);
+      setError(null);
+      try {
+        const ownershipInfo = await getDeckCardOwnership(deckId);
+        return ownershipInfo;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to get deck ownership info';
+        setError(errorMessage);
+        return null;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Get list of missing cards from a deck
+   */
+  const getMissingCards = useCallback(
+    async (deckId: string): Promise<MissingCardInfo[] | null> => {
+      setLoading(true);
+      setError(null);
+      try {
+        const missingCards = await getMissingCardsFromDeck(deckId);
+        return missingCards;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to get missing cards';
+        setError(errorMessage);
+        return null;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Add a single card to collection
+   */
+  const addCard = useCallback(
+    async (cardId: string, quantity: number = 1): Promise<boolean> => {
+      setLoading(true);
+      setError(null);
+      try {
+        await addCardToCollection(cardId, quantity);
+        return true;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to add card to collection';
+        setError(errorMessage);
+        return false;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Add multiple cards to collection in bulk
+   */
+  const addCardsBulk = useCallback(
+    async (
+      cards: Array<{ card_id: string; quantity: number }>
+    ): Promise<Array<{ card_id: string; success: boolean; error?: string }> | null> => {
+      setLoading(true);
+      setError(null);
+      try {
+        const results = await addCardsToCollectionBulk(cards);
+        return results;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to add cards to collection';
+        setError(errorMessage);
+        return null;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Add all missing cards from a deck to collection
+   */
+  const addMissingDeckCards = useCallback(
+    async (
+      deckId: string
+    ): Promise<Array<{ card_id: string; success: boolean; error?: string }> | null> => {
+      setLoading(true);
+      setError(null);
+      try {
+        const results = await addMissingDeckCardsToCollection(deckId);
+        return results;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to add missing cards';
+        setError(errorMessage);
+        return null;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  /**
+   * Remove a card from collection
+   */
+  const removeCard = useCallback(
+    async (cardId: string, quantity?: number): Promise<boolean> => {
+      setLoading(true);
+      setError(null);
+      try {
+        await removeCardFromCollection(cardId, quantity);
+        return true;
+      } catch (err) {
+        const errorMessage = err instanceof Error ? err.message : 'Failed to remove card from collection';
+        setError(errorMessage);
+        return false;
+      } finally {
+        setLoading(false);
+      }
+    },
+    []
+  );
+
+  return {
+    loading,
+    error,
+    clearError,
+    getCollection,
+    checkCardOwnership,
+    checkMultipleCardsOwnership,
+    getDeckOwnership,
+    getMissingCards,
+    addCard,
+    addCardsBulk,
+    addMissingDeckCards,
+    removeCard,
+  };
+};

src/index.css

@@ -167,6 +167,34 @@
   animation: float 3s ease-in-out infinite;
 }
 
+/* Diagonal Carousel - Cards flow from bottom-left to top-right diagonally and loop */
+@keyframes flowDiagonal {
+  0% {
+    translate: 0 0;
+    opacity: 1;
+  }
+  60% {
+    translate: 600px -600px;
+    opacity: 1;
+  }
+  75% {
+    translate: 900px -900px;
+    opacity: 0.6;
+  }
+  85% {
+    translate: 1100px -1100px;
+    opacity: 0.3;
+  }
+  100% {
+    translate: 1400px -1400px;
+    opacity: 0;
+  }
+}
+
+.animate-flow-right {
+  animation: flowDiagonal 40s linear infinite;
+}
+
 /* Gradient Animation */
 @keyframes gradientShift {
   0% {

src/lib/Entities.ts

@@ -140,26 +140,168 @@ export type Database = {
                 Row: {
                     created_at: string | null
                     id: string
-                    theme_color: string | null
                     updated_at: string | null
                     username: string | null
+                    collection_visibility: 'public' | 'friends' | 'private' | null
                 }
                 Insert: {
                     created_at?: string | null
                     id: string
-                    theme_color?: string | null
                     updated_at?: string | null
                     username?: string | null
+                    collection_visibility?: 'public' | 'friends' | 'private' | null
                 }
                 Update: {
                     created_at?: string | null
                     id?: string
-                    theme_color?: string | null
                     updated_at?: string | null
                     username?: string | null
+                    collection_visibility?: 'public' | 'friends' | 'private' | null
                 }
                 Relationships: []
             }
+            friendships: {
+                Row: {
+                    id: string
+                    requester_id: string
+                    addressee_id: string
+                    status: 'pending' | 'accepted' | 'declined'
+                    created_at: string | null
+                    updated_at: string | null
+                }
+                Insert: {
+                    id?: string
+                    requester_id: string
+                    addressee_id: string
+                    status?: 'pending' | 'accepted' | 'declined'
+                    created_at?: string | null
+                    updated_at?: string | null
+                }
+                Update: {
+                    id?: string
+                    requester_id?: string
+                    addressee_id?: string
+                    status?: 'pending' | 'accepted' | 'declined'
+                    created_at?: string | null
+                    updated_at?: string | null
+                }
+                Relationships: [
+                    {
+                        foreignKeyName: "friendships_requester_id_fkey"
+                        columns: ["requester_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    },
+                    {
+                        foreignKeyName: "friendships_addressee_id_fkey"
+                        columns: ["addressee_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    }
+                ]
+            }
+            trades: {
+                Row: {
+                    id: string
+                    user1_id: string
+                    user2_id: string
+                    status: 'pending' | 'accepted' | 'declined' | 'cancelled'
+                    message: string | null
+                    created_at: string | null
+                    updated_at: string | null
+                    version: number
+                    editor_id: string | null
+                }
+                Insert: {
+                    id?: string
+                    user1_id: string
+                    user2_id: string
+                    status?: 'pending' | 'accepted' | 'declined' | 'cancelled'
+                    message?: string | null
+                    created_at?: string | null
+                    updated_at?: string | null
+                    version?: number
+                    editor_id?: string | null
+                }
+                Update: {
+                    id?: string
+                    user1_id?: string
+                    user2_id?: string
+                    status?: 'pending' | 'accepted' | 'declined' | 'cancelled'
+                    message?: string | null
+                    created_at?: string | null
+                    updated_at?: string | null
+                    version?: number
+                    editor_id?: string | null
+                }
+                Relationships: [
+                    {
+                        foreignKeyName: "trades_user1_id_fkey"
+                        columns: ["user1_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    },
+                    {
+                        foreignKeyName: "trades_user2_id_fkey"
+                        columns: ["user2_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    },
+                    {
+                        foreignKeyName: "trades_editor_id_fkey"
+                        columns: ["editor_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    }
+                ]
+            }
+            trade_items: {
+                Row: {
+                    id: string
+                    trade_id: string
+                    owner_id: string
+                    card_id: string
+                    quantity: number
+                    created_at: string | null
+                }
+                Insert: {
+                    id?: string
+                    trade_id: string
+                    owner_id: string
+                    card_id: string
+                    quantity?: number
+                    created_at?: string | null
+                }
+                Update: {
+                    id?: string
+                    trade_id?: string
+                    owner_id?: string
+                    card_id?: string
+                    quantity?: number
+                    created_at?: string | null
+                }
+                Relationships: [
+                    {
+                        foreignKeyName: "trade_items_trade_id_fkey"
+                        columns: ["trade_id"]
+                        isOneToOne: false
+                        referencedRelation: "trades"
+                        referencedColumns: ["id"]
+                    },
+                    {
+                        foreignKeyName: "trade_items_owner_id_fkey"
+                        columns: ["owner_id"]
+                        isOneToOne: false
+                        referencedRelation: "profiles"
+                        referencedColumns: ["id"]
+                    }
+                ]
+            }
         }
         Views: {
             [_ in never]: never

src/services/api.ts

@@ -1,4 +1,5 @@
 import { Card } from '../types';
+import { supabase } from '../lib/supabase';
 
 const SCRYFALL_API = 'https://api.scryfall.com';
 
@@ -52,3 +53,201 @@ export const getCardsByIds = async (cardIds: string[]): Promise<Card[]> => {
 
   return allCards;
 };
+
+// Collection API functions
+export const getUserCollection = async (userId: string): Promise<Map<string, number>> => {
+  const { data, error } = await supabase
+    .from('collections')
+    .select('card_id, quantity')
+    .eq('user_id', userId);
+
+  if (error) {
+    console.error('Error fetching user collection:', error);
+    throw error;
+  }
+
+  // Create a map of card_id to quantity for easy lookup
+  const collectionMap = new Map<string, number>();
+  data?.forEach((item) => {
+    collectionMap.set(item.card_id, item.quantity);
+  });
+
+  return collectionMap;
+};
+
+// Paginated collection API
+export interface PaginatedCollectionResult {
+  items: Map<string, number>; // card_id -> quantity
+  totalCount: number;
+  hasMore: boolean;
+}
+
+// Get total collection value from user profile (pre-calculated by triggers)
+export const getCollectionTotalValue = async (userId: string): Promise<number> => {
+  const { data, error } = await supabase
+    .from('profiles')
+    .select('collection_total_value')
+    .eq('id', userId)
+    .single();
+
+  if (error) {
+    console.error('Error fetching collection total value:', error);
+    return 0;
+  }
+
+  return data?.collection_total_value || 0;
+};
+
+export const getUserCollectionPaginated = async (
+  userId: string,
+  pageSize: number = 50,
+  offset: number = 0
+): Promise<PaginatedCollectionResult> => {
+  // First, get the total count
+  const { count: totalCount, error: countError } = await supabase
+    .from('collections')
+    .select('*', { count: 'exact', head: true })
+    .eq('user_id', userId);
+
+  if (countError) {
+    console.error('Error counting user collection:', countError);
+    throw countError;
+  }
+
+  // Then get the paginated data
+  const { data, error } = await supabase
+    .from('collections')
+    .select('card_id, quantity')
+    .eq('user_id', userId)
+    .order('created_at', { ascending: false })
+    .range(offset, offset + pageSize - 1);
+
+  if (error) {
+    console.error('Error fetching user collection:', error);
+    throw error;
+  }
+
+  // Create a map of card_id to quantity for easy lookup
+  const collectionMap = new Map<string, number>();
+  data?.forEach((item) => {
+    collectionMap.set(item.card_id, item.quantity);
+  });
+
+  return {
+    items: collectionMap,
+    totalCount: totalCount || 0,
+    hasMore: offset + pageSize < (totalCount || 0),
+  };
+};
+
+export const addCardToCollection = async (
+  userId: string,
+  cardId: string,
+  quantity: number = 1,
+  priceUsd: number = 0
+): Promise<void> => {
+  // Check if card already exists in collection
+  const { data: existing, error: fetchError } = await supabase
+    .from('collections')
+    .select('id, quantity')
+    .eq('user_id', userId)
+    .eq('card_id', cardId)
+    .single();
+
+  if (fetchError && fetchError.code !== 'PGRST116') {
+    // PGRST116 is "not found" error, which is expected for new cards
+    throw fetchError;
+  }
+
+  if (existing) {
+    // Update existing card quantity and price
+    const { error: updateError } = await supabase
+      .from('collections')
+      .update({
+        quantity: existing.quantity + quantity,
+        price_usd: priceUsd,
+        updated_at: new Date().toISOString()
+      })
+      .eq('id', existing.id);
+
+    if (updateError) throw updateError;
+  } else {
+    // Insert new card
+    const { error: insertError } = await supabase
+      .from('collections')
+      .insert({
+        user_id: userId,
+        card_id: cardId,
+        quantity: quantity,
+        price_usd: priceUsd,
+      });
+
+    if (insertError) throw insertError;
+  }
+};
+
+export const addMultipleCardsToCollection = async (
+  userId: string,
+  cards: { cardId: string; quantity: number; priceUsd?: number }[]
+): Promise<void> => {
+  // Fetch existing cards in collection
+  const cardIds = cards.map(c => c.cardId);
+  const { data: existingCards, error: fetchError } = await supabase
+    .from('collections')
+    .select('card_id, quantity, id')
+    .eq('user_id', userId)
+    .in('card_id', cardIds);
+
+  if (fetchError) throw fetchError;
+
+  const existingMap = new Map<string, { id: string; quantity: number }>();
+  existingCards?.forEach((item) => {
+    existingMap.set(item.card_id, { id: item.id, quantity: item.quantity });
+  });
+
+  const toInsert = [];
+  const toUpdate = [];
+
+  for (const card of cards) {
+    const existing = existingMap.get(card.cardId);
+    if (existing) {
+      toUpdate.push({
+        id: existing.id,
+        quantity: existing.quantity + card.quantity,
+        price_usd: card.priceUsd || 0,
+        updated_at: new Date().toISOString(),
+      });
+    } else {
+      toInsert.push({
+        user_id: userId,
+        card_id: card.cardId,
+        quantity: card.quantity,
+        price_usd: card.priceUsd || 0,
+      });
+    }
+  }
+
+  // Perform bulk operations
+  if (toInsert.length > 0) {
+    const { error: insertError } = await supabase
+      .from('collections')
+      .insert(toInsert);
+
+    if (insertError) throw insertError;
+  }
+
+  if (toUpdate.length > 0) {
+    for (const update of toUpdate) {
+      const { error: updateError } = await supabase
+        .from('collections')
+        .update({
+          quantity: update.quantity,
+          price_usd: update.price_usd,
+          updated_at: update.updated_at
+        })
+        .eq('id', update.id);
+
+      if (updateError) throw updateError;
+    }
+  }
+};

src/services/collectionService.ts

@@ -0,0 +1,546 @@
+import { supabase } from '../lib/supabase';
+
+/**
+ * Collection Service
+ * Handles all backend operations related to user card collections
+ */
+
+export interface CollectionCard {
+  id: string;
+  user_id: string;
+  card_id: string;
+  quantity: number;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface MissingCardInfo {
+  card_id: string;
+  quantity_needed: number;
+  quantity_in_collection: number;
+}
+
+export interface CardOwnershipInfo {
+  card_id: string;
+  owned: boolean;
+  quantity_in_collection: number;
+  quantity_in_deck: number;
+  quantity_needed: number;
+}
+
+/**
+ * Get the current authenticated user's ID
+ * @throws Error if user is not authenticated
+ */
+const getCurrentUserId = async (): Promise<string> => {
+  const { data: { user }, error } = await supabase.auth.getUser();
+
+  if (error || !user) {
+    throw new Error('User not authenticated');
+  }
+
+  return user.id;
+};
+
+/**
+ * Get all cards in the user's collection
+ * @returns Array of collection cards with user's ownership info
+ */
+export const getUserCollection = async (): Promise<CollectionCard[]> => {
+  try {
+    const userId = await getCurrentUserId();
+
+    const { data, error } = await supabase
+      .from('collections')
+      .select('*')
+      .eq('user_id', userId);
+
+    if (error) {
+      throw new Error(`Failed to fetch collection: ${error.message}`);
+    }
+
+    return data || [];
+  } catch (error) {
+    console.error('Error in getUserCollection:', error);
+    throw error;
+  }
+};
+
+/**
+ * Check if a single card exists in the user's collection
+ * @param cardId - The Scryfall card ID
+ * @returns CollectionCard or null if not found
+ */
+export const getCardInCollection = async (cardId: string): Promise<CollectionCard | null> => {
+  try {
+    const userId = await getCurrentUserId();
+
+    const { data, error } = await supabase
+      .from('collections')
+      .select('*')
+      .eq('user_id', userId)
+      .eq('card_id', cardId)
+      .maybeSingle();
+
+    if (error) {
+      throw new Error(`Failed to check card ownership: ${error.message}`);
+    }
+
+    return data;
+  } catch (error) {
+    console.error('Error in getCardInCollection:', error);
+    throw error;
+  }
+};
+
+/**
+ * Check ownership status for multiple cards
+ * @param cardIds - Array of Scryfall card IDs
+ * @returns Map of card_id to quantity owned
+ */
+export const checkCardsOwnership = async (
+  cardIds: string[]
+): Promise<Map<string, number>> => {
+  try {
+    const userId = await getCurrentUserId();
+
+    // Remove duplicates
+    const uniqueCardIds = [...new Set(cardIds)];
+
+    if (uniqueCardIds.length === 0) {
+      return new Map();
+    }
+
+    const { data, error } = await supabase
+      .from('collections')
+      .select('card_id, quantity')
+      .eq('user_id', userId)
+      .in('card_id', uniqueCardIds);
+
+    if (error) {
+      throw new Error(`Failed to check cards ownership: ${error.message}`);
+    }
+
+    const ownershipMap = new Map<string, number>();
+
+    if (data) {
+      data.forEach(item => {
+        ownershipMap.set(item.card_id, item.quantity || 0);
+      });
+    }
+
+    return ownershipMap;
+  } catch (error) {
+    console.error('Error in checkCardsOwnership:', error);
+    throw error;
+  }
+};
+
+/**
+ * Get detailed card ownership information for a deck
+ * @param deckId - The deck ID to check
+ * @returns Array of CardOwnershipInfo for each card in the deck
+ */
+export const getDeckCardOwnership = async (
+  deckId: string
+): Promise<CardOwnershipInfo[]> => {
+  try {
+    const userId = await getCurrentUserId();
+
+    // First verify the user owns this deck
+    const { data: deck, error: deckError } = await supabase
+      .from('decks')
+      .select('id, user_id')
+      .eq('id', deckId)
+      .eq('user_id', userId)
+      .single();
+
+    if (deckError || !deck) {
+      throw new Error('Deck not found or access denied');
+    }
+
+    // Get all cards in the deck
+    const { data: deckCards, error: deckCardsError } = await supabase
+      .from('deck_cards')
+      .select('card_id, quantity')
+      .eq('deck_id', deckId);
+
+    if (deckCardsError) {
+      throw new Error(`Failed to fetch deck cards: ${deckCardsError.message}`);
+    }
+
+    if (!deckCards || deckCards.length === 0) {
+      return [];
+    }
+
+    // Create a map of card quantities in deck
+    const deckCardMap = new Map<string, number>();
+    deckCards.forEach(card => {
+      const currentQty = deckCardMap.get(card.card_id) || 0;
+      deckCardMap.set(card.card_id, currentQty + (card.quantity || 1));
+    });
+
+    // Get ownership info for all cards
+    const cardIds = Array.from(deckCardMap.keys());
+    const ownershipMap = await checkCardsOwnership(cardIds);
+
+    // Build the result
+    const ownershipInfo: CardOwnershipInfo[] = [];
+
+    deckCardMap.forEach((quantityInDeck, cardId) => {
+      const quantityInCollection = ownershipMap.get(cardId) || 0;
+      const quantityNeeded = Math.max(0, quantityInDeck - quantityInCollection);
+
+      ownershipInfo.push({
+        card_id: cardId,
+        owned: quantityInCollection >= quantityInDeck,
+        quantity_in_collection: quantityInCollection,
+        quantity_in_deck: quantityInDeck,
+        quantity_needed: quantityNeeded,
+      });
+    });
+
+    return ownershipInfo;
+  } catch (error) {
+    console.error('Error in getDeckCardOwnership:', error);
+    throw error;
+  }
+};
+
+/**
+ * Get list of missing cards from a deck
+ * @param deckId - The deck ID to check
+ * @returns Array of missing cards with quantity needed
+ */
+export const getMissingCardsFromDeck = async (
+  deckId: string
+): Promise<MissingCardInfo[]> => {
+  try {
+    const ownershipInfo = await getDeckCardOwnership(deckId);
+
+    return ownershipInfo
+      .filter(info => !info.owned)
+      .map(info => ({
+        card_id: info.card_id,
+        quantity_needed: info.quantity_needed,
+        quantity_in_collection: info.quantity_in_collection,
+      }));
+  } catch (error) {
+    console.error('Error in getMissingCardsFromDeck:', error);
+    throw error;
+  }
+};
+
+/**
+ * Add a single card to the user's collection
+ * If the card already exists, increment its quantity
+ * @param cardId - The Scryfall card ID
+ * @param quantity - The quantity to add (default: 1)
+ * @returns The updated or created collection card
+ */
+export const addCardToCollection = async (
+  cardId: string,
+  quantity: number = 1
+): Promise<CollectionCard> => {
+  try {
+    if (!cardId || cardId.trim() === '') {
+      throw new Error('Invalid card ID');
+    }
+
+    if (quantity < 1) {
+      throw new Error('Quantity must be at least 1');
+    }
+
+    const userId = await getCurrentUserId();
+
+    // Check if card already exists in collection
+    const existingCard = await getCardInCollection(cardId);
+
+    if (existingCard) {
+      // Update existing card quantity
+      const newQuantity = existingCard.quantity + quantity;
+
+      const { data, error } = await supabase
+        .from('collections')
+        .update({
+          quantity: newQuantity,
+          updated_at: new Date().toISOString(),
+        })
+        .eq('id', existingCard.id)
+        .select()
+        .single();
+
+      if (error) {
+        throw new Error(`Failed to update card quantity: ${error.message}`);
+      }
+
+      return data;
+    } else {
+      // Insert new card
+      const { data, error } = await supabase
+        .from('collections')
+        .insert({
+          user_id: userId,
+          card_id: cardId,
+          quantity: quantity,
+        })
+        .select()
+        .single();
+
+      if (error) {
+        throw new Error(`Failed to add card to collection: ${error.message}`);
+      }
+
+      return data;
+    }
+  } catch (error) {
+    console.error('Error in addCardToCollection:', error);
+    throw error;
+  }
+};
+
+/**
+ * Add multiple cards to the user's collection in bulk
+ * @param cards - Array of {card_id, quantity} objects
+ * @returns Array of results with success/failure status for each card
+ */
+export const addCardsToCollectionBulk = async (
+  cards: Array<{ card_id: string; quantity: number }>
+): Promise<Array<{ card_id: string; success: boolean; error?: string }>> => {
+  try {
+    if (!cards || cards.length === 0) {
+      throw new Error('No cards provided');
+    }
+
+    // Validate all cards first
+    const validationErrors: string[] = [];
+    cards.forEach((card, index) => {
+      if (!card.card_id || card.card_id.trim() === '') {
+        validationErrors.push(`Card at index ${index} has invalid ID`);
+      }
+      if (card.quantity < 1) {
+        validationErrors.push(`Card at index ${index} has invalid quantity`);
+      }
+    });
+
+    if (validationErrors.length > 0) {
+      throw new Error(`Validation failed: ${validationErrors.join(', ')}`);
+    }
+
+    const userId = await getCurrentUserId();
+
+    // Get current collection state for all cards
+    const cardIds = cards.map(c => c.card_id);
+
+    // Prepare updates and inserts
+    const toUpdate: Array<{ id: string; card_id: string; quantity: number }> = [];
+    const toInsert: Array<{ user_id: string; card_id: string; quantity: number }> = [];
+
+    // First, get existing collection entries for update
+    const { data: existingCards, error: fetchError } = await supabase
+      .from('collections')
+      .select('id, card_id, quantity')
+      .eq('user_id', userId)
+      .in('card_id', cardIds);
+
+    if (fetchError) {
+      throw new Error(`Failed to fetch existing cards: ${fetchError.message}`);
+    }
+
+    const existingCardsMap = new Map(
+      (existingCards || []).map(card => [card.card_id, card])
+    );
+
+    // Categorize cards for update or insert
+    cards.forEach(card => {
+      const existing = existingCardsMap.get(card.card_id);
+
+      if (existing) {
+        toUpdate.push({
+          id: existing.id,
+          card_id: card.card_id,
+          quantity: existing.quantity + card.quantity,
+        });
+      } else {
+        toInsert.push({
+          user_id: userId,
+          card_id: card.card_id,
+          quantity: card.quantity,
+        });
+      }
+    });
+
+    const results: Array<{ card_id: string; success: boolean; error?: string }> = [];
+
+    // Process updates
+    for (const updateCard of toUpdate) {
+      try {
+        const { error } = await supabase
+          .from('collections')
+          .update({
+            quantity: updateCard.quantity,
+            updated_at: new Date().toISOString(),
+          })
+          .eq('id', updateCard.id);
+
+        if (error) {
+          results.push({
+            card_id: updateCard.card_id,
+            success: false,
+            error: error.message,
+          });
+        } else {
+          results.push({
+            card_id: updateCard.card_id,
+            success: true,
+          });
+        }
+      } catch (err) {
+        results.push({
+          card_id: updateCard.card_id,
+          success: false,
+          error: err instanceof Error ? err.message : 'Unknown error',
+        });
+      }
+    }
+
+    // Process inserts in batches (Supabase recommends batches of 1000)
+    const batchSize = 1000;
+    for (let i = 0; i < toInsert.length; i += batchSize) {
+      const batch = toInsert.slice(i, i + batchSize);
+
+      try {
+        const { error } = await supabase
+          .from('collections')
+          .insert(batch);
+
+        if (error) {
+          // If batch fails, mark all as failed
+          batch.forEach(card => {
+            results.push({
+              card_id: card.card_id,
+              success: false,
+              error: error.message,
+            });
+          });
+        } else {
+          // Mark all as success
+          batch.forEach(card => {
+            results.push({
+              card_id: card.card_id,
+              success: true,
+            });
+          });
+        }
+      } catch (err) {
+        // If batch fails with exception, mark all as failed
+        batch.forEach(card => {
+          results.push({
+            card_id: card.card_id,
+            success: false,
+            error: err instanceof Error ? err.message : 'Unknown error',
+          });
+        });
+      }
+    }
+
+    return results;
+  } catch (error) {
+    console.error('Error in addCardsToCollectionBulk:', error);
+    throw error;
+  }
+};
+
+/**
+ * Add all missing cards from a deck to the user's collection
+ * @param deckId - The deck ID
+ * @returns Array of results with success/failure status for each card
+ */
+export const addMissingDeckCardsToCollection = async (
+  deckId: string
+): Promise<Array<{ card_id: string; success: boolean; error?: string }>> => {
+  try {
+    const userId = await getCurrentUserId();
+
+    // Verify deck ownership
+    const { data: deck, error: deckError } = await supabase
+      .from('decks')
+      .select('id')
+      .eq('id', deckId)
+      .eq('user_id', userId)
+      .single();
+
+    if (deckError || !deck) {
+      throw new Error('Deck not found or access denied');
+    }
+
+    // Get missing cards
+    const missingCards = await getMissingCardsFromDeck(deckId);
+
+    if (missingCards.length === 0) {
+      return [];
+    }
+
+    // Convert to format for bulk add
+    const cardsToAdd = missingCards.map(card => ({
+      card_id: card.card_id,
+      quantity: card.quantity_needed,
+    }));
+
+    return await addCardsToCollectionBulk(cardsToAdd);
+  } catch (error) {
+    console.error('Error in addMissingDeckCardsToCollection:', error);
+    throw error;
+  }
+};
+
+/**
+ * Remove a card from the user's collection
+ * @param cardId - The Scryfall card ID
+ * @param quantity - The quantity to remove (default: all)
+ * @returns true if successful
+ */
+export const removeCardFromCollection = async (
+  cardId: string,
+  quantity?: number
+): Promise<boolean> => {
+  try {
+    const existingCard = await getCardInCollection(cardId);
+
+    if (!existingCard) {
+      throw new Error('Card not found in collection');
+    }
+
+    // If no quantity specified or quantity >= existing, delete the entry
+    if (!quantity || quantity >= existingCard.quantity) {
+      const { error } = await supabase
+        .from('collections')
+        .delete()
+        .eq('id', existingCard.id);
+
+      if (error) {
+        throw new Error(`Failed to remove card: ${error.message}`);
+      }
+    } else {
+      // Otherwise, decrease the quantity
+      const newQuantity = existingCard.quantity - quantity;
+
+      const { error } = await supabase
+        .from('collections')
+        .update({
+          quantity: newQuantity,
+          updated_at: new Date().toISOString(),
+        })
+        .eq('id', existingCard.id);
+
+      if (error) {
+        throw new Error(`Failed to update card quantity: ${error.message}`);
+      }
+    }
+
+    return true;
+  } catch (error) {
+    console.error('Error in removeCardFromCollection:', error);
+    throw error;
+  }
+};

src/services/friendsService.ts

@@ -0,0 +1,202 @@
+import { supabase } from '../lib/supabase';
+
+export interface Friend {
+  id: string;
+  odship_id: string;
+  username: string | null;
+  status: 'pending' | 'accepted' | 'declined';
+  isRequester: boolean;
+  created_at: string | null;
+}
+
+export interface FriendshipWithProfile {
+  id: string;
+  requester_id: string;
+  addressee_id: string;
+  status: 'pending' | 'accepted' | 'declined';
+  created_at: string | null;
+  requester: { username: string | null };
+  addressee: { username: string | null };
+}
+
+// Get all friends (accepted friendships)
+export async function getFriends(userId: string): Promise<Friend[]> {
+  const { data, error } = await supabase
+    .from('friendships')
+    .select(`
+      id,
+      requester_id,
+      addressee_id,
+      status,
+      created_at,
+      requester:profiles!friendships_requester_id_fkey(username),
+      addressee:profiles!friendships_addressee_id_fkey(username)
+    `)
+    .eq('status', 'accepted')
+    .or(`requester_id.eq.${userId},addressee_id.eq.${userId}`);
+
+  if (error) throw error;
+
+  return (data as unknown as FriendshipWithProfile[]).map((f) => {
+    const isRequester = f.requester_id === userId;
+    return {
+      id: isRequester ? f.addressee_id : f.requester_id,
+      friendshipId: f.id,
+      username: isRequester ? f.addressee?.username : f.requester?.username,
+      status: f.status,
+      isRequester,
+      created_at: f.created_at,
+    };
+  });
+}
+
+// Get pending friend requests (received)
+export async function getPendingRequests(userId: string): Promise<Friend[]> {
+  const { data, error } = await supabase
+    .from('friendships')
+    .select(`
+      id,
+      requester_id,
+      addressee_id,
+      status,
+      created_at,
+      requester:profiles!friendships_requester_id_fkey(username)
+    `)
+    .eq('status', 'pending')
+    .eq('addressee_id', userId);
+
+  if (error) throw error;
+
+  return (data as any[]).map((f) => ({
+    id: f.requester_id,
+    friendshipId: f.id,
+    username: f.requester?.username,
+    status: f.status,
+    isRequester: false,
+    created_at: f.created_at,
+  }));
+}
+
+// Get sent friend requests (pending)
+export async function getSentRequests(userId: string): Promise<Friend[]> {
+  const { data, error } = await supabase
+    .from('friendships')
+    .select(`
+      id,
+      requester_id,
+      addressee_id,
+      status,
+      created_at,
+      addressee:profiles!friendships_addressee_id_fkey(username)
+    `)
+    .eq('status', 'pending')
+    .eq('requester_id', userId);
+
+  if (error) throw error;
+
+  return (data as any[]).map((f) => ({
+    id: f.addressee_id,
+    friendshipId: f.id,
+    username: f.addressee?.username,
+    status: f.status,
+    isRequester: true,
+    created_at: f.created_at,
+  }));
+}
+
+// Search users by username
+export async function searchUsers(query: string, currentUserId: string) {
+  const { data, error } = await supabase
+    .from('profiles')
+    .select('id, username')
+    .ilike('username', `%${query}%`)
+    .neq('id', currentUserId)
+    .limit(10);
+
+  if (error) throw error;
+  return data;
+}
+
+// Send friend request
+export async function sendFriendRequest(requesterId: string, addresseeId: string) {
+  const { data, error } = await supabase
+    .from('friendships')
+    .insert({
+      requester_id: requesterId,
+      addressee_id: addresseeId,
+      status: 'pending',
+    })
+    .select()
+    .single();
+
+  if (error) throw error;
+  return data;
+}
+
+// Accept friend request
+export async function acceptFriendRequest(friendshipId: string) {
+  const { data, error } = await supabase
+    .from('friendships')
+    .update({ status: 'accepted', updated_at: new Date().toISOString() })
+    .eq('id', friendshipId)
+    .select()
+    .single();
+
+  if (error) throw error;
+  return data;
+}
+
+// Decline friend request
+export async function declineFriendRequest(friendshipId: string) {
+  const { data, error } = await supabase
+    .from('friendships')
+    .update({ status: 'declined', updated_at: new Date().toISOString() })
+    .eq('id', friendshipId)
+    .select()
+    .single();
+
+  if (error) throw error;
+  return data;
+}
+
+// Remove friend (delete friendship)
+export async function removeFriend(friendshipId: string) {
+  const { error } = await supabase
+    .from('friendships')
+    .delete()
+    .eq('id', friendshipId);
+
+  if (error) throw error;
+}
+
+// Check if two users are friends
+export async function areFriends(userId1: string, userId2: string): Promise<boolean> {
+  const { data, error } = await supabase
+    .from('friendships')
+    .select('id')
+    .eq('status', 'accepted')
+    .or(`and(requester_id.eq.${userId1},addressee_id.eq.${userId2}),and(requester_id.eq.${userId2},addressee_id.eq.${userId1})`)
+    .maybeSingle();
+
+  if (error) throw error;
+  return data !== null;
+}
+
+// Get friendship status between two users
+export async function getFriendshipStatus(userId1: string, userId2: string) {
+  const { data, error } = await supabase
+    .from('friendships')
+    .select('id, status, requester_id')
+    .or(`and(requester_id.eq.${userId1},addressee_id.eq.${userId2}),and(requester_id.eq.${userId2},addressee_id.eq.${userId1})`)
+    .maybeSingle();
+
+  if (error) throw error;
+
+  if (!data) return { status: 'none' as const, friendshipId: null, isRequester: false };
+
+  return {
+    status: data.status as 'pending' | 'accepted' | 'declined',
+    friendshipId: data.id,
+    isRequester: data.requester_id === userId1,
+  };
+}

src/services/tradesService.ts

@@ -0,0 +1,347 @@
+import { supabase } from '../lib/supabase';
+
+export interface TradeItem {
+  id: string;
+  trade_id: string;
+  owner_id: string;
+  card_id: string;
+  quantity: number;
+}
+
+export interface Trade {
+  id: string;
+  user1_id: string;
+  user2_id: string;
+  status: 'pending' | 'accepted' | 'declined' | 'cancelled';
+  message: string | null;
+  created_at: string | null;
+  updated_at: string | null;
+  version: number;
+  editor_id: string | null;
+  is_valid: boolean;
+  user1?: { username: string | null };
+  user2?: { username: string | null };
+  items?: TradeItem[];
+}
+
+export interface TradeHistoryEntry {
+  id: string;
+  trade_id: string;
+  version: number;
+  editor_id: string;
+  message: string | null;
+  created_at: string;
+  editor?: { username: string | null };
+  items?: TradeHistoryItem[];
+}
+
+export interface TradeHistoryItem {
+  id: string;
+  history_id: string;
+  owner_id: string;
+  card_id: string;
+  quantity: number;
+}
+
+export interface CreateTradeParams {
+  user1Id: string;
+  user2Id: string;
+  message?: string;
+  user1Cards: { cardId: string; quantity: number }[];
+  user2Cards: { cardId: string; quantity: number }[];
+}
+
+export interface UpdateTradeParams {
+  tradeId: string;
+  editorId: string;
+  message?: string;
+  myCards: { cardId: string; quantity: number }[];
+  theirCards: { cardId: string; quantity: number }[];
+}
+
+// Get all trades for a user
+export async function getTrades(userId: string): Promise<Trade[]> {
+  const { data, error } = await supabase
+    .from('trades')
+    .select(`
+      *,
+      user1:profiles!trades_user1_id_fkey(username),
+      user2:profiles!trades_user2_id_fkey(username),
+      items:trade_items(*)
+    `)
+    .or(`user1_id.eq.${userId},user2_id.eq.${userId}`)
+    .order('created_at', { ascending: false });
+
+  if (error) throw error;
+  return data as Trade[];
+}
+
+// Get pending trades for a user
+export async function getPendingTrades(userId: string): Promise<Trade[]> {
+  const { data, error } = await supabase
+    .from('trades')
+    .select(`
+      *,
+      user1:profiles!trades_user1_id_fkey(username),
+      user2:profiles!trades_user2_id_fkey(username),
+      items:trade_items(*)
+    `)
+    .eq('status', 'pending')
+    .or(`user1_id.eq.${userId},user2_id.eq.${userId}`)
+    .order('created_at', { ascending: false });
+
+  if (error) throw error;
+  return data as Trade[];
+}
+
+// Get trade by ID
+export async function getTradeById(tradeId: string): Promise<Trade | null> {
+  const { data, error } = await supabase
+    .from('trades')
+    .select(`
+      *,
+      user1:profiles!trades_user1_id_fkey(username),
+      user2:profiles!trades_user2_id_fkey(username),
+      items:trade_items(*)
+    `)
+    .eq('id', tradeId)
+    .single();
+
+  if (error) throw error;
+  return data as Trade;
+}
+
+// Create a new trade with items
+export async function createTrade(params: CreateTradeParams): Promise<Trade> {
+  const { user1Id, user2Id, message, user1Cards, user2Cards } = params;
+
+  // Create the trade
+  const { data: trade, error: tradeError } = await supabase
+    .from('trades')
+    .insert({
+      user1_id: user1Id,
+      user2_id: user2Id,
+      message,
+      status: 'pending',
+      // editor_id starts as null - gets set when someone edits the trade
+    })
+    .select()
+    .single();
+
+  if (tradeError) throw tradeError;
+
+  // Add user1's cards
+  const user1Items = user1Cards.map((card) => ({
+    trade_id: trade.id,
+    owner_id: user1Id,
+    card_id: card.cardId,
+    quantity: card.quantity,
+  }));
+
+  // Add user2's cards
+  const user2Items = user2Cards.map((card) => ({
+    trade_id: trade.id,
+    owner_id: user2Id,
+    card_id: card.cardId,
+    quantity: card.quantity,
+  }));
+
+  const allItems = [...user1Items, ...user2Items];
+
+  if (allItems.length > 0) {
+    const { error: itemsError } = await supabase
+      .from('trade_items')
+      .insert(allItems);
+
+    if (itemsError) throw itemsError;
+  }
+
+  return trade;
+}
+
+// Accept a trade (executes the card transfer)
+export async function acceptTrade(tradeId: string): Promise<boolean> {
+  // First check if the trade is valid
+  const { data: trade, error: tradeError } = await supabase
+    .from('trades')
+    .select('is_valid, status')
+    .eq('id', tradeId)
+    .single();
+
+  if (tradeError) throw tradeError;
+
+  // Prevent accepting invalid trades
+  if (!trade.is_valid) {
+    throw new Error('This trade is no longer valid. One or more cards are no longer available in the required quantities.');
+  }
+
+  // Prevent accepting non-pending trades
+  if (trade.status !== 'pending') {
+    throw new Error('This trade has already been processed.');
+  }
+
+  const { data, error } = await supabase.rpc('execute_trade', {
+    trade_id: tradeId,
+  });
+
+  if (error) throw error;
+  return data as boolean;
+}
+
+// Decline a trade
+export async function declineTrade(tradeId: string): Promise<Trade> {
+  const { data, error } = await supabase
+    .from('trades')
+    .update({ status: 'declined', updated_at: new Date().toISOString() })
+    .eq('id', tradeId)
+    .select()
+    .single();
+
+  if (error) throw error;
+  return data;
+}
+
+// Cancel a trade (sender only)
+export async function cancelTrade(tradeId: string): Promise<Trade> {
+  const { data, error } = await supabase
+    .from('trades')
+    .update({ status: 'cancelled', updated_at: new Date().toISOString() })
+    .eq('id', tradeId)
+    .select()
+    .single();
+
+  if (error) throw error;
+  return data;
+}
+
+// Get trade history (completed/cancelled/declined trades)
+export async function getTradeHistory(userId: string): Promise<Trade[]> {
+  const { data, error } = await supabase
+    .from('trades')
+    .select(`
+      *,
+      user1:profiles!trades_user1_id_fkey(username),
+      user2:profiles!trades_user2_id_fkey(username),
+      items:trade_items(*)
+    `)
+    .or(`user1_id.eq.${userId},user2_id.eq.${userId}`)
+    .in('status', ['accepted', 'declined', 'cancelled'])
+    .order('updated_at', { ascending: false })
+    .limit(50);
+
+  if (error) throw error;
+  return data as Trade[];
+}
+
+// Update an existing trade (for edits and counter-offers)
+export async function updateTrade(params: UpdateTradeParams): Promise<Trade> {
+  const { tradeId, editorId, message, myCards, theirCards } = params;
+
+  // Get current trade info
+  const { data: currentTrade, error: tradeError } = await supabase
+    .from('trades')
+    .select('version, user1_id, user2_id')
+    .eq('id', tradeId)
+    .single();
+
+  if (tradeError) throw tradeError;
+
+  const newVersion = (currentTrade.version || 1) + 1;
+
+  // Determine the other user's ID
+  const otherUserId = currentTrade.user1_id === editorId
+    ? currentTrade.user2_id
+    : currentTrade.user1_id;
+
+  // Save current state to history before updating
+  const { data: historyEntry, error: historyError } = await supabase
+    .from('trade_history')
+    .insert({
+      trade_id: tradeId,
+      version: currentTrade.version || 1,
+      editor_id: editorId,
+      message: message || null,
+    })
+    .select()
+    .single();
+
+  if (historyError) throw historyError;
+
+  // Save current items to history
+  const { data: currentItems } = await supabase
+    .from('trade_items')
+    .select('*')
+    .eq('trade_id', tradeId);
+
+  if (currentItems && currentItems.length > 0) {
+    const historyItems = currentItems.map(item => ({
+      history_id: historyEntry.id,
+      owner_id: item.owner_id,
+      card_id: item.card_id,
+      quantity: item.quantity,
+    }));
+
+    await supabase.from('trade_history_items').insert(historyItems);
+  }
+
+  // Update the trade
+  const { data: updatedTrade, error: updateError } = await supabase
+    .from('trades')
+    .update({
+      message,
+      version: newVersion,
+      editor_id: editorId,
+      updated_at: new Date().toISOString(),
+    })
+    .eq('id', tradeId)
+    .select()
+    .single();
+
+  if (updateError) throw updateError;
+
+  // Delete existing items
+  await supabase.from('trade_items').delete().eq('trade_id', tradeId);
+
+  // Add new items (myCards belong to editor, theirCards belong to other user)
+  const myItems = myCards.map((card) => ({
+    trade_id: tradeId,
+    owner_id: editorId,
+    card_id: card.cardId,
+    quantity: card.quantity,
+  }));
+
+  const theirItems = theirCards.map((card) => ({
+    trade_id: tradeId,
+    owner_id: otherUserId,
+    card_id: card.cardId,
+    quantity: card.quantity,
+  }));
+
+  const allItems = [...myItems, ...theirItems];
+
+  if (allItems.length > 0) {
+    const { error: itemsError } = await supabase
+      .from('trade_items')
+      .insert(allItems);
+
+    if (itemsError) throw itemsError;
+  }
+
+  return updatedTrade;
+}
+
+// Get version history for a trade
+export async function getTradeVersionHistory(tradeId: string): Promise<TradeHistoryEntry[]> {
+  const { data, error } = await supabase
+    .from('trade_history')
+    .select(`
+      *,
+      editor:profiles!trade_history_editor_id_fkey(username),
+      items:trade_history_items(*)
+    `)
+    .eq('trade_id', tradeId)
+    .order('version', { ascending: true });
+
+  if (error) throw error;
+  return data as TradeHistoryEntry[];
+}

src/types/index.ts

@@ -5,17 +5,46 @@ export interface User {
   themeColor: 'red' | 'green' | 'blue' | 'yellow' | 'grey' | 'purple';
 }
 
+export interface CardImageUris {
+  small?: string;
+  normal?: string;
+  large?: string;
+  art_crop?: string;
+  border_crop?: string;
+  png?: string;
+}
+
+export interface CardFace {
+  name?: string;
+  mana_cost?: string;
+  type_line?: string;
+  oracle_text?: string;
+  image_uris?: CardImageUris;
+}
+
 export interface Card {
   id: string;
   name: string;
-  image_uris?: {
-    normal: string;
-    art_crop: string;
-  };
+  image_uris?: CardImageUris;
+  card_faces?: CardFace[];
   mana_cost?: string;
   type_line?: string;
   oracle_text?: string;
   colors?: string[];
+  prices?: {
+    usd?: string;
+    usd_foil?: string;
+    eur?: string;
+  };
+}
+
+export interface Collection {
+  id: string;
+  user_id: string;
+  card_id: string;
+  quantity: number;
+  created_at: string;
+  updated_at: string;
 }
 
 export interface Deck {
@@ -26,6 +55,11 @@ export interface Deck {
   userId: string;
   createdAt: Date;
   updatedAt: Date;
+  coverCardId?: string;
+  coverCard?: Card | null;
+  validationErrors?: string[];
+  isValid?: boolean;
+  cardCount?: number;
 }
 
 export interface CardEntity {

src/utils/deckValidation.ts

@@ -1,10 +1,23 @@
-import { Deck } from '../types';
+import { Card, Deck } from '../types';
 
 interface DeckValidation {
   isValid: boolean;
   errors: string[];
 }
 
+// Helper function to get commander color identity
+function getCommanderColors(commander: Card | null): string[] {
+  if (!commander) return [];
+  return commander.colors || [];
+}
+
+// Helper function to check if a card's colors are valid for the commander
+function isCardValidForCommander(card: Card, commanderColors: string[]): boolean {
+  if (commanderColors.length === 0) return true;
+  const cardColors = card.colors || [];
+  return cardColors.every(color => commanderColors.includes(color));
+}
+
 const FORMAT_RULES = {
   standard: {
     minCards: 60,
@@ -74,6 +87,25 @@ export function validateDeck(deck: Deck): DeckValidation {
     }
   });
 
+  // Commander-specific validations
+  if (deck.format === 'commander') {
+    const commander = deck.cards.find(card => card.is_commander)?.card;
+
+    if (!commander) {
+      errors.push('Commander deck must have a commander');
+    } else {
+      // Check commander color identity
+      const commanderColors = getCommanderColors(commander);
+      const invalidCards = deck.cards.filter(({ card, is_commander }) =>
+        !is_commander && !isCardValidForCommander(card, commanderColors)
+      );
+
+      if (invalidCards.length > 0) {
+        errors.push(`Some cards don't match commander's color identity`);
+      }
+    }
+  }
+
   return {
     isValid: errors.length === 0,
     errors,

src/utils/migrateDeckData.ts

@@ -0,0 +1,116 @@
+import { supabase } from '../lib/supabase';
+import { getCardsByIds } from '../services/api';
+import { validateDeck } from './deckValidation';
+import { Deck } from '../types';
+
+/**
+ * Migrate existing decks to include optimization fields
+ * This should be run once to update all existing decks
+ */
+export async function migrateExistingDecks() {
+  console.log('Starting deck migration...');
+
+  // Get all decks
+  const { data: decksData, error: decksError } = await supabase
+    .from('decks')
+    .select('*');
+
+  if (decksError) {
+    console.error('Error fetching decks:', decksError);
+    return;
+  }
+
+  console.log(`Found ${decksData.length} decks to migrate`);
+
+  for (const deck of decksData) {
+    // Skip if already migrated
+    if (deck.cover_card_id && deck.card_count !== null) {
+      console.log(`Deck ${deck.name} already migrated, skipping`);
+      continue;
+    }
+
+    console.log(`Migrating deck: ${deck.name}`);
+
+    // Get deck cards
+    const { data: cardEntities, error: cardsError } = await supabase
+      .from('deck_cards')
+      .select('*')
+      .eq('deck_id', deck.id);
+
+    if (cardsError || !cardEntities || cardEntities.length === 0) {
+      console.error(`Error fetching cards for deck ${deck.id}:`, cardsError);
+      continue;
+    }
+
+    const cardIds = cardEntities.map(entity => entity.card_id);
+    const uniqueCardIds = [...new Set(cardIds)];
+
+    try {
+      // Fetch cards from Scryfall
+      const scryfallCards = await getCardsByIds(uniqueCardIds);
+
+      if (!scryfallCards) {
+        console.error(`Failed to fetch cards for deck ${deck.id}`);
+        continue;
+      }
+
+      const cards = cardEntities.map(entity => {
+        const card = scryfallCards.find(c => c.id === entity.card_id);
+        return {
+          card,
+          quantity: entity.quantity,
+          is_commander: entity.is_commander,
+        };
+      });
+
+      // Create deck object for validation
+      const deckToValidate: Deck = {
+        id: deck.id,
+        name: deck.name,
+        format: deck.format,
+        cards,
+        userId: deck.user_id,
+        createdAt: new Date(deck.created_at),
+        updatedAt: new Date(deck.updated_at),
+      };
+
+      // Calculate validation
+      const validation = validateDeck(deckToValidate);
+
+      // Determine cover card (commander or first card)
+      const commanderCard = deck.format === 'commander'
+        ? cardEntities.find(c => c.is_commander)
+        : null;
+      const coverCardId = commanderCard
+        ? commanderCard.card_id
+        : cardEntities[0]?.card_id || null;
+
+      // Calculate total card count
+      const totalCardCount = cardEntities.reduce((acc, curr) => acc + curr.quantity, 0);
+
+      // Update deck with optimization fields
+      const { error: updateError } = await supabase
+        .from('decks')
+        .update({
+          cover_card_id: coverCardId,
+          validation_errors: validation.errors,
+          is_valid: validation.isValid,
+          card_count: totalCardCount,
+        })
+        .eq('id', deck.id);
+
+      if (updateError) {
+        console.error(`Error updating deck ${deck.id}:`, updateError);
+      } else {
+        console.log(`✓ Migrated deck: ${deck.name}`);
+      }
+
+      // Small delay to avoid rate limiting
+      await new Promise(resolve => setTimeout(resolve, 100));
+    } catch (error) {
+      console.error(`Error processing deck ${deck.id}:`, error);
+    }
+  }
+
+  console.log('Migration complete!');
+}

supabase/migrations/20250124000000_friends_trades_visibility.sql

@@ -0,0 +1,273 @@
+/*
+  # Friends, Trades, and Collection Visibility
+
+  1. Changes to profiles
+    - Add `collection_visibility` column (public, friends, private)
+
+  2. New Tables
+    - `friendships` - Friend relationships between users
+    - `trades` - Trade offers between users
+    - `trade_items` - Cards included in trades
+
+  3. Security
+    - RLS policies for all new tables
+    - Updated collection policies for visibility
+*/
+
+-- Add collection visibility to profiles
+ALTER TABLE public.profiles
+ADD COLUMN collection_visibility text DEFAULT 'private'
+CHECK (collection_visibility IN ('public', 'friends', 'private'));
+
+-- =============================================
+-- FRIENDSHIPS TABLE
+-- =============================================
+CREATE TABLE public.friendships (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  requester_id uuid REFERENCES public.profiles(id) ON DELETE CASCADE NOT NULL,
+  addressee_id uuid REFERENCES public.profiles(id) ON DELETE CASCADE NOT NULL,
+  status text DEFAULT 'pending' CHECK (status IN ('pending', 'accepted', 'declined')),
+  created_at timestamptz DEFAULT now(),
+  updated_at timestamptz DEFAULT now(),
+  UNIQUE(requester_id, addressee_id),
+  CHECK (requester_id != addressee_id)
+);
+
+ALTER TABLE public.friendships ENABLE ROW LEVEL SECURITY;
+
+-- Users can see friendships they're involved in
+CREATE POLICY "Users can view their friendships"
+  ON public.friendships
+  FOR SELECT
+  TO authenticated
+  USING (requester_id = auth.uid() OR addressee_id = auth.uid());
+
+-- Users can create friend requests
+CREATE POLICY "Users can send friend requests"
+  ON public.friendships
+  FOR INSERT
+  TO authenticated
+  WITH CHECK (requester_id = auth.uid());
+
+-- Users can update friendships they received (accept/decline)
+CREATE POLICY "Users can respond to friend requests"
+  ON public.friendships
+  FOR UPDATE
+  TO authenticated
+  USING (addressee_id = auth.uid());
+
+-- Users can delete their own friendships
+CREATE POLICY "Users can delete their friendships"
+  ON public.friendships
+  FOR DELETE
+  TO authenticated
+  USING (requester_id = auth.uid() OR addressee_id = auth.uid());
+
+-- =============================================
+-- TRADES TABLE
+-- =============================================
+CREATE TABLE public.trades (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  sender_id uuid REFERENCES public.profiles(id) ON DELETE CASCADE NOT NULL,
+  receiver_id uuid REFERENCES public.profiles(id) ON DELETE CASCADE NOT NULL,
+  status text DEFAULT 'pending' CHECK (status IN ('pending', 'accepted', 'declined', 'cancelled')),
+  message text,
+  created_at timestamptz DEFAULT now(),
+  updated_at timestamptz DEFAULT now(),
+  CHECK (sender_id != receiver_id)
+);
+
+ALTER TABLE public.trades ENABLE ROW LEVEL SECURITY;
+
+-- Users can see trades they're involved in
+CREATE POLICY "Users can view their trades"
+  ON public.trades
+  FOR SELECT
+  TO authenticated
+  USING (sender_id = auth.uid() OR receiver_id = auth.uid());
+
+-- Users can create trades
+CREATE POLICY "Users can create trades"
+  ON public.trades
+  FOR INSERT
+  TO authenticated
+  WITH CHECK (sender_id = auth.uid());
+
+-- Sender can cancel, receiver can accept/decline
+CREATE POLICY "Users can update their trades"
+  ON public.trades
+  FOR UPDATE
+  TO authenticated
+  USING (sender_id = auth.uid() OR receiver_id = auth.uid());
+
+-- =============================================
+-- TRADE ITEMS TABLE
+-- =============================================
+CREATE TABLE public.trade_items (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  trade_id uuid REFERENCES public.trades(id) ON DELETE CASCADE NOT NULL,
+  owner_id uuid REFERENCES public.profiles(id) ON DELETE CASCADE NOT NULL,
+  card_id text NOT NULL,
+  quantity integer DEFAULT 1 CHECK (quantity > 0),
+  created_at timestamptz DEFAULT now()
+);
+
+ALTER TABLE public.trade_items ENABLE ROW LEVEL SECURITY;
+
+-- Users can see items in their trades
+CREATE POLICY "Users can view trade items"
+  ON public.trade_items
+  FOR SELECT
+  TO authenticated
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.trades
+      WHERE trades.id = trade_items.trade_id
+      AND (trades.sender_id = auth.uid() OR trades.receiver_id = auth.uid())
+    )
+  );
+
+-- Users can add items to trades they created
+CREATE POLICY "Users can add trade items"
+  ON public.trade_items
+  FOR INSERT
+  TO authenticated
+  WITH CHECK (
+    EXISTS (
+      SELECT 1 FROM public.trades
+      WHERE trades.id = trade_items.trade_id
+      AND trades.sender_id = auth.uid()
+      AND trades.status = 'pending'
+    )
+  );
+
+-- =============================================
+-- UPDATE COLLECTION POLICIES FOR VISIBILITY
+-- =============================================
+
+-- Drop old restrictive policy
+DROP POLICY IF EXISTS "Users can view their own collection" ON public.collections;
+
+-- New policy: view own collection OR public collections OR friend's collections (if friends visibility)
+CREATE POLICY "Users can view collections based on visibility"
+  ON public.collections
+  FOR SELECT
+  TO authenticated
+  USING (
+    user_id = auth.uid()
+    OR EXISTS (
+      SELECT 1 FROM public.profiles
+      WHERE profiles.id = collections.user_id
+      AND profiles.collection_visibility = 'public'
+    )
+    OR EXISTS (
+      SELECT 1 FROM public.profiles p
+      JOIN public.friendships f ON (
+        (f.requester_id = p.id AND f.addressee_id = auth.uid())
+        OR (f.addressee_id = p.id AND f.requester_id = auth.uid())
+      )
+      WHERE p.id = collections.user_id
+      AND p.collection_visibility = 'friends'
+      AND f.status = 'accepted'
+    )
+  );
+
+-- =============================================
+-- UPDATE PROFILES POLICY FOR PUBLIC VIEWING
+-- =============================================
+
+-- Drop old restrictive policy
+DROP POLICY IF EXISTS "Users can view their own profile" ON public.profiles;
+
+-- New policy: users can view all profiles (needed for friend search and public collections)
+CREATE POLICY "Users can view profiles"
+  ON public.profiles
+  FOR SELECT
+  TO authenticated
+  USING (true);
+
+-- =============================================
+-- FUNCTION: Execute trade (transfer cards)
+-- =============================================
+CREATE OR REPLACE FUNCTION public.execute_trade(trade_id uuid)
+RETURNS boolean
+LANGUAGE plpgsql
+SECURITY DEFINER
+AS $$
+DECLARE
+  v_trade RECORD;
+  v_item RECORD;
+BEGIN
+  -- Get the trade
+  SELECT * INTO v_trade FROM public.trades WHERE id = trade_id;
+
+  -- Check trade exists and is pending
+  IF v_trade IS NULL OR v_trade.status != 'pending' THEN
+    RETURN false;
+  END IF;
+
+  -- Check caller is the receiver
+  IF v_trade.receiver_id != auth.uid() THEN
+    RETURN false;
+  END IF;
+
+  -- Process each trade item
+  FOR v_item IN SELECT * FROM public.trade_items WHERE trade_items.trade_id = execute_trade.trade_id
+  LOOP
+    -- Determine new owner
+    DECLARE
+      v_new_owner uuid;
+    BEGIN
+      IF v_item.owner_id = v_trade.sender_id THEN
+        v_new_owner := v_trade.receiver_id;
+      ELSE
+        v_new_owner := v_trade.sender_id;
+      END IF;
+
+      -- Remove from old owner's collection
+      UPDATE public.collections
+      SET quantity = quantity - v_item.quantity,
+          updated_at = now()
+      WHERE user_id = v_item.owner_id
+      AND card_id = v_item.card_id;
+
+      -- Delete if quantity is 0 or less
+      DELETE FROM public.collections
+      WHERE user_id = v_item.owner_id
+      AND card_id = v_item.card_id
+      AND quantity <= 0;
+
+      -- Add to new owner's collection
+      INSERT INTO public.collections (user_id, card_id, quantity)
+      VALUES (v_new_owner, v_item.card_id, v_item.quantity)
+      ON CONFLICT (user_id, card_id)
+      DO UPDATE SET
+        quantity = collections.quantity + v_item.quantity,
+        updated_at = now();
+    END;
+  END LOOP;
+
+  -- Mark trade as accepted
+  UPDATE public.trades
+  SET status = 'accepted', updated_at = now()
+  WHERE id = trade_id;
+
+  RETURN true;
+END;
+$$;
+
+-- Add unique constraint on collections for upsert
+ALTER TABLE public.collections
+ADD CONSTRAINT collections_user_card_unique UNIQUE (user_id, card_id);
+
+-- =============================================
+-- INDEXES FOR PERFORMANCE
+-- =============================================
+CREATE INDEX idx_friendships_requester ON public.friendships(requester_id);
+CREATE INDEX idx_friendships_addressee ON public.friendships(addressee_id);
+CREATE INDEX idx_friendships_status ON public.friendships(status);
+CREATE INDEX idx_trades_sender ON public.trades(sender_id);
+CREATE INDEX idx_trades_receiver ON public.trades(receiver_id);
+CREATE INDEX idx_trades_status ON public.trades(status);
+CREATE INDEX idx_trade_items_trade ON public.trade_items(trade_id);
+CREATE INDEX idx_profiles_visibility ON public.profiles(collection_visibility);

supabase/migrations/20250126000000_trade_history.sql

@@ -0,0 +1,78 @@
+-- Create trade_history table to track all versions of a trade
+CREATE TABLE IF NOT EXISTS public.trade_history (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  trade_id uuid REFERENCES public.trades(id) ON DELETE CASCADE NOT NULL,
+  version integer NOT NULL,
+  editor_id uuid REFERENCES public.profiles(id) NOT NULL,
+  message text,
+  created_at timestamptz DEFAULT now(),
+  UNIQUE(trade_id, version)
+);
+
+-- Create trade_history_items table to store cards for each version
+CREATE TABLE IF NOT EXISTS public.trade_history_items (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  history_id uuid REFERENCES public.trade_history(id) ON DELETE CASCADE NOT NULL,
+  owner_id uuid REFERENCES public.profiles(id) NOT NULL,
+  card_id text NOT NULL,
+  quantity integer DEFAULT 1,
+  created_at timestamptz DEFAULT now()
+);
+
+-- Add version column to trades table to track current version
+ALTER TABLE public.trades ADD COLUMN IF NOT EXISTS version integer DEFAULT 1;
+
+-- Add editor_id to track who last edited the trade
+ALTER TABLE public.trades ADD COLUMN IF NOT EXISTS editor_id uuid REFERENCES public.profiles(id);
+
+-- Create indexes for better performance
+CREATE INDEX IF NOT EXISTS idx_trade_history_trade_id ON public.trade_history(trade_id);
+CREATE INDEX IF NOT EXISTS idx_trade_history_items_history_id ON public.trade_history_items(history_id);
+
+-- Enable RLS
+ALTER TABLE public.trade_history ENABLE ROW LEVEL SECURITY;
+ALTER TABLE public.trade_history_items ENABLE ROW LEVEL SECURITY;
+
+-- RLS policies for trade_history
+CREATE POLICY "Users can view history of their trades"
+  ON public.trade_history FOR SELECT
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.trades
+      WHERE trades.id = trade_history.trade_id
+      AND (trades.sender_id = auth.uid() OR trades.receiver_id = auth.uid())
+    )
+  );
+
+CREATE POLICY "Users can create history for their trades"
+  ON public.trade_history FOR INSERT
+  WITH CHECK (
+    EXISTS (
+      SELECT 1 FROM public.trades
+      WHERE trades.id = trade_history.trade_id
+      AND (trades.sender_id = auth.uid() OR trades.receiver_id = auth.uid())
+    )
+  );
+
+-- RLS policies for trade_history_items
+CREATE POLICY "Users can view history items of their trades"
+  ON public.trade_history_items FOR SELECT
+  USING (
+    EXISTS (
+      SELECT 1 FROM public.trade_history th
+      JOIN public.trades t ON t.id = th.trade_id
+      WHERE th.id = trade_history_items.history_id
+      AND (t.sender_id = auth.uid() OR t.receiver_id = auth.uid())
+    )
+  );
+
+CREATE POLICY "Users can create history items for their trades"
+  ON public.trade_history_items FOR INSERT
+  WITH CHECK (
+    EXISTS (
+      SELECT 1 FROM public.trade_history th
+      JOIN public.trades t ON t.id = th.trade_id
+      WHERE th.id = trade_history_items.history_id
+      AND (t.sender_id = auth.uid() OR t.receiver_id = auth.uid())
+    )
+  );

supabase/migrations/20250127000000_add_price_to_collections.sql

@@ -0,0 +1,9 @@
+-- Add price_usd column to collections table
+ALTER TABLE collections
+ADD COLUMN IF NOT EXISTS price_usd DECIMAL(10, 2) DEFAULT 0;
+
+-- Create index for faster price calculations
+CREATE INDEX IF NOT EXISTS idx_collections_price ON collections(price_usd);
+
+-- Add comment
+COMMENT ON COLUMN collections.price_usd IS 'USD price of the card at time of addition/update';

supabase/migrations/20250127000001_add_trade_validation.sql

@@ -0,0 +1,101 @@
+-- Add is_valid column to trades table
+ALTER TABLE public.trades
+ADD COLUMN IF NOT EXISTS is_valid BOOLEAN DEFAULT true;
+
+-- Create index for filtering by validity
+CREATE INDEX IF NOT EXISTS idx_trades_is_valid ON public.trades(is_valid);
+
+-- Function to validate if a trade can still be executed based on current collections
+CREATE OR REPLACE FUNCTION public.validate_trade(p_trade_id uuid)
+RETURNS boolean
+LANGUAGE plpgsql
+SECURITY DEFINER
+AS $$
+DECLARE
+  v_item RECORD;
+  v_collection_quantity integer;
+BEGIN
+  -- Check each item in the trade
+  FOR v_item IN
+    SELECT owner_id, card_id, quantity
+    FROM public.trade_items
+    WHERE trade_id = p_trade_id
+  LOOP
+    -- Get the quantity of this card in the owner's collection
+    SELECT COALESCE(quantity, 0) INTO v_collection_quantity
+    FROM public.collections
+    WHERE user_id = v_item.owner_id
+    AND card_id = v_item.card_id;
+
+    -- If owner doesn't have enough of this card, trade is invalid
+    IF v_collection_quantity < v_item.quantity THEN
+      RETURN false;
+    END IF;
+  END LOOP;
+
+  -- All items are available, trade is valid
+  RETURN true;
+END;
+$$;
+
+-- Function to check and update validity of affected trades when collections change
+CREATE OR REPLACE FUNCTION public.update_affected_trades_validity()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+SECURITY DEFINER
+AS $$
+DECLARE
+  v_user_id uuid;
+  v_card_id text;
+  v_trade RECORD;
+  v_is_valid boolean;
+BEGIN
+  -- Get the user_id and card_id from the changed row
+  IF (TG_OP = 'DELETE') THEN
+    v_user_id := OLD.user_id;
+    v_card_id := OLD.card_id;
+  ELSE
+    v_user_id := NEW.user_id;
+    v_card_id := NEW.card_id;
+  END IF;
+
+  -- Find all pending trades that involve this card from this user
+  FOR v_trade IN
+    SELECT DISTINCT t.id
+    FROM public.trades t
+    JOIN public.trade_items ti ON ti.trade_id = t.id
+    WHERE t.status = 'pending'
+    AND ti.owner_id = v_user_id
+    AND ti.card_id = v_card_id
+  LOOP
+    -- Validate the trade
+    v_is_valid := public.validate_trade(v_trade.id);
+
+    -- Update the trade's validity
+    UPDATE public.trades
+    SET is_valid = v_is_valid,
+        updated_at = now()
+    WHERE id = v_trade.id;
+  END LOOP;
+
+  IF (TG_OP = 'DELETE') THEN
+    RETURN OLD;
+  ELSE
+    RETURN NEW;
+  END IF;
+END;
+$$;
+
+-- Create trigger to auto-update trade validity when collections change
+CREATE TRIGGER update_trades_on_collection_change
+AFTER UPDATE OR DELETE ON public.collections
+FOR EACH ROW
+EXECUTE FUNCTION public.update_affected_trades_validity();
+
+-- Add comment
+COMMENT ON COLUMN public.trades.is_valid IS 'Indicates if the trade can still be executed based on current collections. Auto-updated when collections change.';
+
+-- Initial validation: set is_valid for all existing pending trades
+UPDATE public.trades
+SET is_valid = public.validate_trade(id)
+WHERE status = 'pending';

vite.config.ts

@@ -1,9 +1,98 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import { VitePWA } from 'vite-plugin-pwa';
 
 // https://vitejs.dev/config/
 export default defineConfig({
-  plugins: [react()],
+  plugins: [
+    react(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      includeAssets: ['icon.svg'],
+      manifest: {
+        name: 'Deckerr - Card Deck Manager',
+        short_name: 'Deckerr',
+        description: 'Manage your trading card game decks on the go',
+        theme_color: '#0f172a',
+        background_color: '#0f172a',
+        display: 'standalone',
+        orientation: 'portrait',
+        scope: '/',
+        start_url: '/',
+        icons: [
+          {
+            src: 'icon.svg',
+            sizes: '512x512',
+            type: 'image/svg+xml',
+            purpose: 'any'
+          },
+          {
+            src: 'icon.svg',
+            sizes: '512x512',
+            type: 'image/svg+xml',
+            purpose: 'maskable'
+          }
+        ],
+        categories: ['games', 'utilities'],
+        shortcuts: [
+          {
+            name: 'My Decks',
+            short_name: 'Decks',
+            description: 'View your deck collection',
+            url: '/?page=home'
+          },
+          {
+            name: 'Search Cards',
+            short_name: 'Search',
+            description: 'Search for cards',
+            url: '/?page=search'
+          },
+          {
+            name: 'Life Counter',
+            short_name: 'Life',
+            description: 'Track life totals',
+            url: '/?page=life-counter'
+          }
+        ]
+      },
+      workbox: {
+        globPatterns: ['**/*.{js,css,html,ico,png,svg,woff,woff2}'],
+        runtimeCaching: [
+          {
+            urlPattern: /^https:\/\/api\.scryfall\.com\/.*/i,
+            handler: 'CacheFirst',
+            options: {
+              cacheName: 'scryfall-cache',
+              expiration: {
+                maxEntries: 500,
+                maxAgeSeconds: 60 * 60 * 24 * 7 // 7 days
+              },
+              cacheableResponse: {
+                statuses: [0, 200]
+              }
+            }
+          },
+          {
+            urlPattern: /^https:\/\/cards\.scryfall\.io\/.*/i,
+            handler: 'CacheFirst',
+            options: {
+              cacheName: 'card-images-cache',
+              expiration: {
+                maxEntries: 1000,
+                maxAgeSeconds: 60 * 60 * 24 * 30 // 30 days
+              },
+              cacheableResponse: {
+                statuses: [0, 200]
+              }
+            }
+          }
+        ]
+      },
+      devOptions: {
+        enabled: true
+      }
+    })
+  ],
   optimizeDeps: {
     exclude: ['lucide-react'],
   },