Add complete dockerized amigos app with React frontend and MongoDB backend

.dockerignore

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+node_modules
+backend/node_modules
+dist
+.git
+.gitignore
+*.md
+.env
+.env.local
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.DS_Store
+*.log

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

Dockerfile

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+# Build stage for React app
+FROM node:18-alpine AS frontend-build
+
+WORKDIR /app
+
+# Copy frontend package files
+COPY package*.json ./
+RUN npm ci
+
+# Copy frontend source
+COPY index.html vite.config.js ./
+COPY src ./src
+
+# Build React app
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy backend files
+COPY backend/package*.json ./backend/
+WORKDIR /app/backend
+RUN npm ci --only=production
+
+# Copy backend source files
+COPY backend/server-prod.js ./
+
+# Copy built React app from build stage
+COPY --from=frontend-build /app/dist /app/dist
+
+# Go back to app directory
+WORKDIR /app
+
+# Expose port
+EXPOSE 3001
+
+# Start the backend server
+CMD ["node", "backend/server-prod.js"]

README.md

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+# React + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and [`typescript-eslint`](https://typescript-eslint.io) in your project.

backend/package.json

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+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^5.1.0",
+    "mongodb": "^6.19.0"
+  }
+}

backend/server-prod.js

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+const express = require('express');
+const { MongoClient } = require('mongodb');
+const cors = require('cors');
+const path = require('path');
+
+const app = express();
+const PORT = process.env.PORT || 3001;
+
+// Middleware
+app.use(cors());
+app.use(express.json());
+
+// Serve static files from React build
+app.use(express.static(path.join(__dirname, '..', 'dist')));
+
+// MongoDB connection - using host.docker.internal for Docker networking
+const mongoHost = process.env.MONGO_HOST || 'host.docker.internal';
+const uri = `mongodb://admin:MongoPass2024!@${mongoHost}:27017/?authSource=admin`;
+const client = new MongoClient(uri);
+
+let db;
+let amigosCollection;
+
+// Connect to MongoDB
+async function connectDB() {
+  try {
+    await client.connect();
+    console.log('Connected to MongoDB');
+    db = client.db('testdb');
+    amigosCollection = db.collection('amigos');
+  } catch (error) {
+    console.error('Error connecting to MongoDB:', error);
+    // Retry connection after 5 seconds
+    setTimeout(connectDB, 5000);
+  }
+}
+
+// API Routes
+// Get all amigos
+app.get('/api/amigos', async (req, res) => {
+  try {
+    if (!amigosCollection) {
+      return res.status(503).json({ error: 'Database not connected' });
+    }
+    const amigos = await amigosCollection.find({}).toArray();
+    res.json(amigos);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Add new amigo
+app.post('/api/amigos', async (req, res) => {
+  try {
+    if (!amigosCollection) {
+      return res.status(503).json({ error: 'Database not connected' });
+    }
+    
+    const { nombre } = req.body;
+    if (!nombre) {
+      return res.status(400).json({ error: 'Nombre es requerido' });
+    }
+    
+    const result = await amigosCollection.insertOne({ nombre });
+    res.status(201).json({ 
+      message: 'Amigo agregado exitosamente',
+      id: result.insertedId,
+      nombre 
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Health check endpoint
+app.get('/health', (req, res) => {
+  res.json({ 
+    status: 'ok', 
+    mongodb: amigosCollection ? 'connected' : 'disconnected' 
+  });
+});
+
+// Serve React app for all other routes
+app.use((req, res) => {
+  res.sendFile(path.join(__dirname, '..', 'dist', 'index.html'));
+});
+
+// Start server
+connectDB().then(() => {
+  app.listen(PORT, '0.0.0.0', () => {
+    console.log(`Server running on http://0.0.0.0:${PORT}`);
+    console.log(`MongoDB host: ${mongoHost}`);
+  });
+});

backend/server.js

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+const express = require('express');
+const { MongoClient } = require('mongodb');
+const cors = require('cors');
+
+const app = express();
+const PORT = 3001;
+
+// Middleware
+app.use(cors());
+app.use(express.json());
+
+// MongoDB connection
+const uri = 'mongodb://admin:MongoPass2024!@localhost:27017/?authSource=admin';
+const client = new MongoClient(uri);
+
+let db;
+let amigosCollection;
+
+// Connect to MongoDB
+async function connectDB() {
+  try {
+    await client.connect();
+    console.log('Connected to MongoDB');
+    db = client.db('testdb');
+    amigosCollection = db.collection('amigos');
+  } catch (error) {
+    console.error('Error connecting to MongoDB:', error);
+  }
+}
+
+// Routes
+// Get all amigos
+app.get('/api/amigos', async (req, res) => {
+  try {
+    const amigos = await amigosCollection.find({}).toArray();
+    res.json(amigos);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Add new amigo
+app.post('/api/amigos', async (req, res) => {
+  try {
+    const { nombre } = req.body;
+    if (!nombre) {
+      return res.status(400).json({ error: 'Nombre es requerido' });
+    }
+    
+    const result = await amigosCollection.insertOne({ nombre });
+    res.status(201).json({ 
+      message: 'Amigo agregado exitosamente',
+      id: result.insertedId,
+      nombre 
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Start server
+connectDB().then(() => {
+  app.listen(PORT, () => {
+    console.log(`Server running on http://localhost:${PORT}`);
+  });
+});

docker-compose.yml

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+version: '3.8'
+
+services:
+  amigos-app:
+    build: .
+    container_name: amigos-app
+    ports:
+      - "3001:3001"
+    environment:
+      - MONGO_HOST=mongodb-local
+      - PORT=3001
+    depends_on:
+      - mongodb
+    networks:
+      - amigos-network
+
+  mongodb:
+    image: mongo:latest
+    container_name: mongodb-local
+    ports:
+      - "27017:27017"
+    environment:
+      - MONGO_INITDB_ROOT_USERNAME=admin
+      - MONGO_INITDB_ROOT_PASSWORD=MongoPass2024!
+      - MONGO_INITDB_DATABASE=testdb
+    networks:
+      - amigos-network
+
+networks:
+  amigos-network:
+    driver: bridge

eslint.config.js

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+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{js,jsx}'],
+    extends: [
+      js.configs.recommended,
+      reactHooks.configs['recommended-latest'],
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        ecmaFeatures: { jsx: true },
+        sourceType: 'module',
+      },
+    },
+    rules: {
+      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
+    },
+  },
+])

index.html

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+<!doctype html>
+<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</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>

package.json

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+{
+  "name": "amigos-app",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "concurrently \"npm run server\" \"npm run client\"",
+    "client": "vite",
+    "server": "cd backend && node server.js",
+    "build": "vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.1.1",
+    "react-dom": "^19.1.1"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.33.0",
+    "@types/react": "^19.1.10",
+    "@types/react-dom": "^19.1.7",
+    "@vitejs/plugin-react": "^5.0.0",
+    "concurrently": "^9.2.1",
+    "eslint": "^9.33.0",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "eslint-plugin-react-refresh": "^0.4.20",
+    "globals": "^16.3.0",
+    "vite": "^7.1.2"
+  }
+}

public/vite.svg

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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

src/App.css

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+#root {
+  max-width: 600px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.App {
+  background: rgba(255, 255, 255, 0.95);
+  border-radius: 24px;
+  padding: 3rem 2rem;
+  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
+  backdrop-filter: blur(10px);
+  animation: fadeIn 0.5s ease-out;
+}
+
+.App h1 {
+  position: relative;
+  display: inline-block;
+  margin-bottom: 2.5rem;
+}
+
+.App h1::after {
+  content: '✨';
+  position: absolute;
+  right: -35px;
+  top: 50%;
+  transform: translateY(-50%);
+  font-size: 0.7em;
+  animation: float 3s ease-in-out infinite;
+}
+
+@keyframes float {
+  0%, 100% {
+    transform: translateY(-50%) translateX(0);
+  }
+  50% {
+    transform: translateY(-50%) translateX(5px);
+  }
+}
+
+.form-container {
+  background: linear-gradient(145deg, #f8f9ff 0%, #ffffff 100%);
+  padding: 2.5rem;
+  border-radius: 20px;
+  margin-bottom: 2rem;
+  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.08);
+  border: 1px solid rgba(102, 126, 234, 0.1);
+  animation: slideIn 0.6s ease-out 0.2s both;
+}
+
+.form-group {
+  margin-bottom: 1.8rem;
+  text-align: left;
+}
+
+.form-group label {
+  display: block;
+  margin-bottom: 0.7rem;
+  font-weight: 600;
+  color: #4a5568;
+  font-size: 0.95rem;
+  letter-spacing: 0.3px;
+  text-transform: uppercase;
+}
+
+.form-group input {
+  width: 100%;
+  padding: 1rem 1.2rem;
+  font-size: 1.05rem;
+  border: 2px solid #e2e8f0;
+  border-radius: 12px;
+  background: white;
+  transition: all 0.3s ease;
+  font-weight: 500;
+  color: #2d3748;
+}
+
+.form-group input:focus {
+  outline: none;
+  border-color: #667eea;
+  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+  transform: translateY(-1px);
+}
+
+.form-group input::placeholder {
+  color: #a0aec0;
+  font-weight: 400;
+}
+
+button[type="submit"] {
+  width: 100%;
+  margin-top: 0.5rem;
+}
+
+button[type="submit"]:disabled {
+  background: linear-gradient(135deg, #cbd5e0 0%, #a0aec0 100%);
+  cursor: not-allowed;
+  opacity: 0.7;
+  box-shadow: none;
+}
+
+.message {
+  padding: 1rem 1.5rem;
+  margin: 1.5rem 0;
+  border-radius: 12px;
+  font-weight: 600;
+  animation: fadeIn 0.3s ease-out;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.5rem;
+}
+
+.message.success {
+  background: linear-gradient(145deg, #f0fdf4 0%, #dcfce7 100%);
+  color: #166534;
+  border: 1px solid #86efac;
+  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.1);
+}
+
+.message.success::before {
+  content: '✓';
+  display: inline-block;
+  width: 24px;
+  height: 24px;
+  background: #22c55e;
+  color: white;
+  border-radius: 50%;
+  line-height: 24px;
+  text-align: center;
+}
+
+.message.error {
+  background: linear-gradient(145deg, #fef2f2 0%, #fee2e2 100%);
+  color: #991b1b;
+  border: 1px solid #fca5a5;
+  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.1);
+}
+
+.message.error::before {
+  content: '✕';
+  display: inline-block;
+  width: 24px;
+  height: 24px;
+  background: #ef4444;
+  color: white;
+  border-radius: 50%;
+  line-height: 22px;
+  text-align: center;
+}
+
+.amigos-list {
+  background: linear-gradient(145deg, #f8f9ff 0%, #ffffff 100%);
+  padding: 2.5rem;
+  border-radius: 20px;
+  margin-top: 2rem;
+  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.08);
+  border: 1px solid rgba(102, 126, 234, 0.1);
+  animation: slideIn 0.6s ease-out 0.4s both;
+}
+
+.amigos-list h2 {
+  margin-bottom: 1.5rem;
+  color: #4a5568;
+  font-size: 1.3rem;
+  font-weight: 700;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.5rem;
+}
+
+.amigos-list h2::before {
+  content: '👥';
+  font-size: 1.2em;
+}
+
+.amigos-list ul {
+  list-style: none;
+  padding: 0;
+  max-height: 400px;
+  overflow-y: auto;
+  display: grid;
+  gap: 0.75rem;
+}
+
+.amigos-list ul::-webkit-scrollbar {
+  width: 8px;
+}
+
+.amigos-list ul::-webkit-scrollbar-track {
+  background: #f1f5f9;
+  border-radius: 10px;
+}
+
+.amigos-list ul::-webkit-scrollbar-thumb {
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  border-radius: 10px;
+}
+
+.amigos-list ul::-webkit-scrollbar-thumb:hover {
+  background: linear-gradient(135deg, #5a67d8 0%, #6b3fa0 100%);
+}
+
+.amigos-list li {
+  background: white;
+  padding: 1rem 1.25rem;
+  border-radius: 12px;
+  border: 1px solid #e2e8f0;
+  text-align: left;
+  font-weight: 500;
+  color: #2d3748;
+  transition: all 0.3s ease;
+  cursor: default;
+  position: relative;
+  overflow: hidden;
+}
+
+.amigos-list li::before {
+  content: '👤';
+  margin-right: 0.75rem;
+  font-size: 1.1em;
+}
+
+.amigos-list li::after {
+  content: '';
+  position: absolute;
+  left: 0;
+  top: 0;
+  height: 100%;
+  width: 3px;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  transform: scaleY(0);
+  transition: transform 0.3s ease;
+}
+
+.amigos-list li:hover {
+  transform: translateX(8px);
+  border-color: #667eea;
+  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
+}
+
+.amigos-list li:hover::after {
+  transform: scaleY(1);
+}
+
+.amigos-list li:nth-child(even) {
+  animation: slideIn 0.5s ease-out;
+}
+
+.amigos-list li:nth-child(odd) {
+  animation: slideIn 0.5s ease-out 0.1s;
+}
+
+@media (max-width: 640px) {
+  #root {
+    padding: 1rem;
+  }
+  
+  .App {
+    padding: 2rem 1.5rem;
+  }
+  
+  .form-container,
+  .amigos-list {
+    padding: 1.75rem;
+  }
+  
+  h1 {
+    font-size: 2em;
+  }
+}

src/App.jsx

@@ -0,0 +1,101 @@
+import { useState, useEffect } from 'react'
+import './App.css'
+
+function App() {
+  const [nombre, setNombre] = useState('')
+  const [amigos, setAmigos] = useState([])
+  const [loading, setLoading] = useState(false)
+  const [message, setMessage] = useState('')
+
+  useEffect(() => {
+    fetchAmigos()
+  }, [])
+
+  const fetchAmigos = async () => {
+    try {
+      const response = await fetch('http://localhost:3001/api/amigos')
+      const data = await response.json()
+      setAmigos(data)
+    } catch (error) {
+      console.error('Error al cargar amigos:', error)
+    }
+  }
+
+  const handleSubmit = async (e) => {
+    e.preventDefault()
+    
+    if (!nombre.trim()) {
+      setMessage('Por favor ingresa un nombre')
+      return
+    }
+
+    setLoading(true)
+    setMessage('')
+
+    try {
+      const response = await fetch('http://localhost:3001/api/amigos', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ nombre: nombre.trim() })
+      })
+
+      const data = await response.json()
+
+      if (response.ok) {
+        setMessage(`¡${data.nombre} agregado exitosamente!`)
+        setNombre('')
+        fetchAmigos()
+      } else {
+        setMessage(data.error || 'Error al agregar amigo')
+      }
+    } catch (error) {
+      setMessage('Error de conexión con el servidor')
+      console.error('Error:', error)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div className="App">
+      <h1>Registro de Amigos</h1>
+      
+      <form onSubmit={handleSubmit} className="form-container">
+        <div className="form-group">
+          <label htmlFor="nombre">Nombre del amigo:</label>
+          <input
+            type="text"
+            id="nombre"
+            value={nombre}
+            onChange={(e) => setNombre(e.target.value)}
+            placeholder="Ingresa el nombre"
+            disabled={loading}
+          />
+        </div>
+        
+        <button type="submit" disabled={loading}>
+          {loading ? 'Enviando...' : 'Enviar'}
+        </button>
+      </form>
+
+      {message && (
+        <div className={`message ${message.includes('exitosamente') ? 'success' : 'error'}`}>
+          {message}
+        </div>
+      )}
+
+      <div className="amigos-list">
+        <h2>Lista de Amigos ({amigos.length})</h2>
+        <ul>
+          {amigos.map((amigo) => (
+            <li key={amigo._id}>{amigo.nombre}</li>
+          ))}
+        </ul>
+      </div>
+    </div>
+  )
+}
+
+export default App

src/assets/react.svg

@@ -0,0 +1 @@
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src/index.css

@@ -0,0 +1,117 @@
+:root {
+  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+  line-height: 1.6;
+  font-weight: 400;
+
+  color-scheme: light;
+  color: #2c3e50;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  min-height: 100vh;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+  position: relative;
+  overflow-x: hidden;
+}
+
+body::before {
+  content: '';
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  z-index: -1;
+}
+
+h1 {
+  font-size: 2.5em;
+  line-height: 1.2;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+  font-weight: 800;
+  margin-bottom: 1.5rem;
+  text-align: center;
+  letter-spacing: -0.02em;
+}
+
+button {
+  border-radius: 12px;
+  border: none;
+  padding: 0.8em 2em;
+  font-size: 1em;
+  font-weight: 600;
+  font-family: inherit;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  cursor: pointer;
+  transition: all 0.3s ease;
+  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+}
+
+button:hover:not(:disabled) {
+  transform: translateY(-2px);
+  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
+}
+
+button:active {
+  transform: translateY(0);
+}
+
+button:focus,
+button:focus-visible {
+  outline: 3px solid rgba(102, 126, 234, 0.5);
+  outline-offset: 2px;
+}
+
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes slideIn {
+  from {
+    opacity: 0;
+    transform: translateX(-20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateX(0);
+  }
+}

src/main.jsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.jsx'
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

vite.config.js

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+})