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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CodeGen AI - Your AI Coding Assistant</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        .gradient-bg {
            background: linear-gradient(135deg, #6e8efb, #a777e3);
        }
        .code-editor {
            background-color: #1e293b;
            border-radius: 0.5rem;
        }
        .tab-active {
            border-bottom: 3px solid #a777e3;
            color: #a777e3;
            font-weight: 600;
        }
        .response-area {
            min-height: 200px;
            transition: all 0.3s ease;
        }
        .loading-dots::after {
            content: '.';
            animation: dots 1.5s steps(5, end) infinite;
        }
        @keyframes dots {
            0%, 20% { content: '.'; }
            40% { content: '..'; }
            60% { content: '...'; }
            80%, 100% { content: ''; }
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
    </style>
</head>
<body class="bg-gray-50 min-h-screen font-sans">
    <!-- Header -->
    <header class="gradient-bg text-white shadow-lg">
        <div class="container mx-auto px-4 py-6">
            <div class="flex justify-between items-center">
                <div class="flex items-center space-x-2">
                    <i class="fas fa-code text-2xl"></i>
                    <h1 class="text-2xl font-bold">CodeGen AI</h1>
                </div>
                <nav class="hidden md:block">
                    <ul class="flex space-x-6">
                        <li><a href="#" class="hover:text-gray-200 transition">Features</a></li>
                        <li><a href="#" class="hover:text-gray-200 transition">Pricing</a></li>
                        <li><a href="#" class="hover:text-gray-200 transition">Docs</a></li>
                        <li><a href="#" class="hover:text-gray-200 transition">Contact</a></li>
                    </ul>
                </nav>
                <button class="md:hidden text-xl">
                    <i class="fas fa-bars"></i>
                </button>
            </div>
        </div>
    </header>

    <!-- Hero Section -->
    <section class="gradient-bg text-white py-16">
        <div class="container mx-auto px-4 text-center">
            <h2 class="text-4xl md:text-5xl font-bold mb-6">Your AI-Powered Coding Assistant</h2>
            <p class="text-xl mb-8 max-w-3xl mx-auto">Generate, refactor, debug, and document code with natural language. Supercharge your development workflow.</p>
            <div class="flex flex-col sm:flex-row justify-center gap-4">
                <button class="bg-white text-purple-700 px-6 py-3 rounded-lg font-semibold hover:bg-gray-100 transition shadow-lg">
                    Get Started - It's Free
                </button>
                <button class="bg-transparent border-2 border-white px-6 py-3 rounded-lg font-semibold hover:bg-white hover:text-purple-700 transition">
                    Watch Demo
                </button>
            </div>
        </div>
    </section>

    <!-- Main App Section -->
    <main class="container mx-auto px-4 py-12">
        <div class="grid grid-cols-1 lg:grid-cols-3 gap-8">
            <!-- Features Sidebar -->
            <div class="lg:col-span-1 bg-white rounded-xl shadow-md p-6 h-fit">
                <h3 class="text-xl font-bold mb-4 text-gray-800">Quick Actions</h3>
                <div class="space-y-3">
                    <button onclick="setActiveTab('generate')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-purple-100 p-2 rounded-lg text-purple-700">
                            <i class="fas fa-magic"></i>
                        </div>
                        <span>Generate Code</span>
                    </button>
                    <button onclick="setActiveTab('refactor')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-blue-100 p-2 rounded-lg text-blue-700">
                            <i class="fas fa-refresh"></i>
                        </div>
                        <span>Refactor Code</span>
                    </button>
                    <button onclick="setActiveTab('debug')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-red-100 p-2 rounded-lg text-red-700">
                            <i class="fas fa-bug"></i>
                        </div>
                        <span>Debug Code</span>
                    </button>
                    <button onclick="setActiveTab('document')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-green-100 p-2 rounded-lg text-green-700">
                            <i class="fas fa-file-alt"></i>
                        </div>
                        <span>Document Code</span>
                    </button>
                    <button onclick="setActiveTab('question')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-yellow-100 p-2 rounded-lg text-yellow-700">
                            <i class="fas fa-question-circle"></i>
                        </div>
                        <span>Ask Questions</span>
                    </button>
                    <button onclick="setActiveTab('automate')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-indigo-100 p-2 rounded-lg text-indigo-700">
                            <i class="fas fa-robot"></i>
                        </div>
                        <span>Automate Tasks</span>
                    </button>
                    <button onclick="setActiveTab('project')" class="w-full flex items-center space-x-3 p-3 rounded-lg hover:bg-gray-100 transition text-left">
                        <div class="bg-pink-100 p-2 rounded-lg text-pink-700">
                            <i class="fas fa-folder-plus"></i>
                        </div>
                        <span>New Project</span>
                    </button>
                </div>

                <div class="mt-8">
                    <h3 class="text-xl font-bold mb-4 text-gray-800">Recent Files</h3>
                    <div class="space-y-2">
                        <div class="flex items-center justify-between p-2 hover:bg-gray-100 rounded cursor-pointer">
                            <div class="flex items-center space-x-2">
                                <i class="fas fa-file-code text-blue-500"></i>
                                <span>app.js</span>
                            </div>
                            <span class="text-xs text-gray-500">2 min ago</span>
                        </div>
                        <div class="flex items-center justify-between p-2 hover:bg-gray-100 rounded cursor-pointer">
                            <div class="flex items-center space-x-2">
                                <i class="fas fa-file-code text-green-500"></i>
                                <span>styles.css</span>
                            </div>
                            <span class="text-xs text-gray-500">15 min ago</span>
                        </div>
                        <div class="flex items-center justify-between p-2 hover:bg-gray-100 rounded cursor-pointer">
                            <div class="flex items-center space-x-2">
                                <i class="fas fa-file-code text-purple-500"></i>
                                <span>index.html</span>
                            </div>
                            <span class="text-xs text-gray-500">1 hour ago</span>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Main Content Area -->
            <div class="lg:col-span-2 space-y-6">
                <!-- Tabs -->
                <div class="flex overflow-x-auto border-b border-gray-200">
                    <button onclick="setActiveTab('generate')" id="generate-tab" class="tab-active px-4 py-2 font-medium text-sm focus:outline-none">
                        Generate Code
                    </button>
                    <button onclick="setActiveTab('refactor')" id="refactor-tab" class="px-4 py-2 font-medium text-sm focus:outline-none">
                        Refactor
                    </button>
                    <button onclick="setActiveTab('debug')" id="debug-tab" class="px-4 py-2 font-medium text-sm focus:outline-none">
                        Debug
                    </button>
                    <button onclick="setActiveTab('document')" id="document-tab" class="px-4 py-2 font-medium text-sm focus:outline-none">
                        Document
                    </button>
                    <button onclick="setActiveTab('question')" id="question-tab" class="px-4 py-2 font-medium text-sm focus:outline-none">
                        Q&A
                    </button>
                </div>

                <!-- Input Area -->
                <div class="bg-white rounded-xl shadow-md overflow-hidden">
                    <div class="p-4 border-b border-gray-200">
                        <div class="flex items-center justify-between">
                            <h4 class="font-semibold">Describe what you want to generate</h4>
                            <div class="flex space-x-2">
                                <select class="bg-gray-100 border-0 rounded text-sm px-2 py-1 focus:ring-2 focus:ring-purple-500">
                                    <option>JavaScript</option>
                                    <option>Python</option>
                                    <option>HTML</option>
                                    <option>CSS</option>
                                    <option>TypeScript</option>
                                    <option>Java</option>
                                </select>
                            </div>
                        </div>
                    </div>
                    <div class="p-4">
                        <textarea id="prompt-input" class="w-full h-32 p-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-transparent" placeholder="Example: Create a React component that displays a list of products with images, names, and prices..."></textarea>
                        <div class="mt-4 flex justify-between items-center">
                            <div class="flex space-x-2">
                                <button class="bg-gray-100 hover:bg-gray-200 px-3 py-1 rounded text-sm">
                                    <i class="fas fa-lightbulb mr-1"></i> Examples
                                </button>
                                <button class="bg-gray-100 hover:bg-gray-200 px-3 py-1 rounded text-sm">
                                    <i class="fas fa-history mr-1"></i> History
                                </button>
                            </div>
                            <button onclick="generateCode()" class="gradient-bg text-white px-4 py-2 rounded-lg font-semibold hover:opacity-90 transition flex items-center">
                                <i class="fas fa-bolt mr-2"></i> Generate
                            </button>
                        </div>
                    </div>
                </div>

                <!-- Response Area -->
                <div class="bg-white rounded-xl shadow-md overflow-hidden">
                    <div class="p-4 border-b border-gray-200 flex justify-between items-center">
                        <h4 class="font-semibold">Generated Code</h4>
                        <div class="flex space-x-2">
                            <button class="text-gray-500 hover:text-purple-700">
                                <i class="fas fa-copy"></i>
                            </button>
                            <button class="text-gray-500 hover:text-purple-700">
                                <i class="fas fa-download"></i>
                            </button>
                            <button class="text-gray-500 hover:text-purple-700">
                                <i class="fas fa-expand"></i>
                            </button>
                        </div>
                    </div>
                    <div id="response-area" class="response-area p-4 code-editor text-gray-200">
                        <div id="loading-indicator" class="hidden text-center py-10">
                            <div class="loading-dots text-xl">Generating</div>
                        </div>
                        <pre id="code-output" class="hidden overflow-auto"><code id="generated-code"></code></pre>
                        <div id="empty-state" class="text-center py-10 text-gray-400">
                            <i class="fas fa-code text-4xl mb-3"></i>
                            <p>Your generated code will appear here</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>

    <!-- Features Section -->
    <section class="bg-gray-50 py-16">
        <div class="container mx-auto px-4">
            <h2 class="text-3xl font-bold text-center mb-12">Powerful Features for Developers</h2>
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-purple-600 mb-4">
                        <i class="fas fa-magic text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Code Generation</h3>
                    <p class="text-gray-600">Turn natural language descriptions into functional code across multiple programming languages.</p>
                </div>
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-blue-600 mb-4">
                        <i class="fas fa-refresh text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Smart Refactoring</h3>
                    <p class="text-gray-600">Improve your code quality with AI-powered refactoring suggestions and optimizations.</p>
                </div>
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-red-600 mb-4">
                        <i class="fas fa-bug text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Debugging Assistant</h3>
                    <p class="text-gray-600">Identify and fix bugs in your code with intelligent error detection and solutions.</p>
                </div>
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-green-600 mb-4">
                        <i class="fas fa-file-alt text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Documentation</h3>
                    <p class="text-gray-600">Automatically generate comprehensive documentation for your codebase.</p>
                </div>
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-yellow-600 mb-4">
                        <i class="fas fa-question-circle text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Code Q&A</h3>
                    <p class="text-gray-600">Get instant answers to questions about your codebase and programming concepts.</p>
                </div>
                <div class="feature-card bg-white rounded-xl shadow-md p-6 transition duration-300">
                    <div class="text-indigo-600 mb-4">
                        <i class="fas fa-robot text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Task Automation</h3>
                    <p class="text-gray-600">Automate repetitive coding tasks and boilerplate generation to save time.</p>
                </div>
            </div>
        </div>
    </section>

    <!-- Footer -->
    <footer class="bg-gray-800 text-white py-12">
        <div class="container mx-auto px-4">
            <div class="grid grid-cols-1 md:grid-cols-4 gap-8">
                <div>
                    <h3 class="text-xl font-bold mb-4">CodeGen AI</h3>
                    <p class="text-gray-400">Your AI-powered coding assistant for faster, better development.</p>
                </div>
                <div>
                    <h4 class="font-bold mb-4">Product</h4>
                    <ul class="space-y-2">
                        <li><a href="#" class="text-gray-400 hover:text-white transition">Features</a></li>
                        <li><a href="#" class="text-gray-400 hover:text-white transition">Pricing</a></li>
                        <li><a href="#" class
</html>