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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>VideoGen Pro V2 - Enhanced Video Generator</title>
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/tailwind.min.css" rel="stylesheet">
    <!-- Add React and other dependencies -->
    <script src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
    <script src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
    <!-- Lucide Icons -->
    <script src="https://unpkg.com/lucide@latest"></script>
    
    <style>
        body {
            margin: 0;
            padding: 0;
            font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: #f1f5f9;
        }
        
        .app-container {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            max-width: 100vw;
            overflow-x: hidden;
        }
        
        .header {
            background-color: white;
            border-bottom: 1px solid #e2e8f0;
            padding: 0.75rem 1rem;
            box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        
        .header-content {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo-container {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .main-container {
            flex: 1;
            display: flex;
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
        }
        
        .sidebar {
            width: 14rem;
            background-color: white;
            border-right: 1px solid #e2e8f0;
            padding: 1rem;
            overflow-y: auto;
            height: calc(100vh - 4rem);
            position: sticky;
            top: 4rem;
        }
        
        .main-content {
            flex: 1;
            padding: 1.5rem;
        }
        
        .tab-list {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 0.5rem;
            margin-bottom: 1rem;
            background-color: #f1f5f9;
            padding: 0.25rem;
            border-radius: 0.375rem;
        }
        
        .tab {
            padding: 0.5rem;
            text-align: center;
            border-radius: 0.25rem;
            font-weight: 500;
            cursor: pointer;
        }
        
        .tab.active {
            background-color: white;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
        }
        
        .nav-button {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            width: 100%;
            padding: 0.5rem 0.75rem;
            margin-bottom: 0.5rem;
            border-radius: 0.375rem;
            cursor: pointer;
            transition: background-color 0.15s;
            font-weight: 500;
        }
        
        .nav-button:hover {
            background-color: #f8fafc;
        }
        
        .nav-button.active {
            background-color: #3b82f6;
            color: white;
        }
        
        .blocks-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        
        .block-card {
            background-color: white;
            border-radius: 0.5rem;
            overflow: hidden;
            box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
            transition: transform 0.15s, box-shadow 0.15s;
        }
        
        .block-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        
        .block-preview {
            aspect-ratio: 16/9;
            position: relative;
        }
        
        .block-content {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 1rem;
            color: white;
        }
        
        .block-footer {
            background-color: white;
            padding: 0.75rem;
        }
        
        .preview-area {
            aspect-ratio: 16/9;
            background-color: #1a1a2e;
            border-radius: 0.5rem;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            margin-bottom: 1rem;
        }
        
        .preview-element {
            position: absolute;
            transition: opacity 0.3s;
        }
        
        .timeline {
            height: 4rem;
            background-color: #1a1a2e;
            border-radius: 0.5rem;
            position: relative;
            margin-top: 0.5rem;
            cursor: pointer;
        }
        
        .timeline-marker {
            position: absolute;
            top: 0;
            height: 100%;
            border-left: 1px solid rgba(255, 255, 255, 0.3);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.75rem;
            padding-left: 0.25rem;
            padding-top: 0.25rem;
        }
        
        .timeline-element {
            position: absolute;
            height: 1.25rem;
            top: 1.5rem;
            border-radius: 0.125rem;
        }
        
        .playhead {
            position: absolute;
            top: 0;
            height: 100%;
            width: 2px;
            background-color: #ef4444;
            z-index: 10;
        }
        
        .playhead::before {
            content: '';
            display: block;
            width: 0.75rem;
            height: 0.75rem;
            background-color: #ef4444;
            border-radius: 9999px;
            position: absolute;
            top: -0.375rem;
            left: -0.375rem;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 0.375rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s;
        }
        
        .btn-primary {
            background-color: #3b82f6;
            color: white;
        }
        
        .btn-primary:hover {
            background-color: #2563eb;
        }
        
        .btn-outline {
            background-color: white;
            border: 1px solid #d1d5db;
        }
        
        .btn-outline:hover {
            background-color: #f8fafc;
        }
        
        .content-table {
            width: 100%;
            background-color: white;
            border-radius: 0.5rem;
            overflow: hidden;
            box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
        }
        
        .table-header {
            background-color: #f8fafc;
            padding: 0.5rem 1rem;
            border-bottom: 1px solid #e2e8f0;
            display: grid;
            grid-template-columns: 1fr 1fr 2fr 2fr 1fr;
            gap: 1rem;
            font-weight: 500;
            color: #475569;
        }
        
        .table-row {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid #e2e8f0;
            display: grid;
            grid-template-columns: 1fr 1fr 2fr 2fr 1fr;
            gap: 1rem;
            align-items: center;
        }
        
        .table-row:last-child {
            border-bottom: none;
        }
        
        .table-input-row {
            padding: 0.75rem 1rem;
            background-color: #f8fafc;
            display: grid;
            grid-template-columns: 1fr 1fr 2fr 2fr 1fr;
            gap: 1rem;
            align-items: center;
        }
        
        .input {
            padding: 0.5rem;
            border: 1px solid #d1d5db;
            border-radius: 0.375rem;
            width: 100%;
        }
        
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.5rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        
        .badge-blue {
            background-color: #dbeafe;
            color: #1e40af;
        }
    </style>
</head>
<body>
    <div class="app-container">
        <!-- Header -->
        <header class="header">
            <div class="header-content">
                <div class="logo-container">
                    <i data-lucide="file-video" class="text-blue-600"></i>
                    <h1 class="text-xl font-bold">VideoGen Pro</h1>
                
                    <input type="text" class="ml-6 border border-gray-300 rounded px-3 py-1.5 w-60" value="Vocabulary Project">
                </div>
                
                <div class="flex gap-2">
                    <button class="btn btn-outline">
                        <i data-lucide="file-text"></i>
                        Project
                    </button>
                    
                    <button class="btn btn-outline">
                        <i data-lucide="download"></i>
                        Export
                    </button>
                    
                    <button class="btn btn-outline w-10 h-10 p-0 flex items-center justify-center">
                        <i data-lucide="settings"></i>
                    </button>
                </div>
            </div>
        </header>
        
        <!-- Main Content -->
        <div class="main-container">
            <!-- Sidebar -->
            <div class="sidebar">
                <div class="tab-list">
                    <div class="tab active">Blocks</div>
                    <div class="tab">Content</div>
                </div>
                
                <div class="flex flex-col space-y-2">
                    <button class="nav-button active">
                        <i data-lucide="layers"></i>
                        Blocks
                    </button>
                    
                    <button class="nav-button">
                        <i data-lucide="file-text"></i>
                        Content
                    </button>
                    
                    <button class="nav-button">
                        <i data-lucide="edit-3"></i>
                        Editor
                    </button>
                    
                    <button class="nav-button">
                        <i data-lucide="zap"></i>
                        Generate
                    </button>
                </div>
                
                <div class="mt-6 border-t pt-4">
                    <h3 class="text-sm font-medium text-gray-500 mb-2">Add Elements</h3>
                    <div class="grid grid-cols-3 gap-2">
                        <button class="p-1 border rounded">
                            <i data-lucide="file-text"></i>
                        </button>
                        <button class="p-1 border rounded">
                            <i data-lucide="layers"></i>
                        </button>
                        <button class="p-1 border rounded">
                            <i data-lucide="volume-2"></i>
                        </button>
                    </div>
                    
                    <h3 class="text-sm font-medium text-gray-500 mt-4 mb-2">Animation Style</h3>
                    <select class="input text-sm">
                        <option>Fade In</option>
                        <option>Slide In</option>
                        <option>Zoom In</option>
                        <option>Bounce In</option>
                        <option>Flip In</option>
                    </select>
                    
                    <div class="flex items-center justify-between mt-4">
                        <span class="text-sm">Auto-sync to Audio</span>
                        <label class="relative inline-flex items-center cursor-pointer">
                            <input type="checkbox" class="sr-only peer" checked>
                            <div class="w-9 h-5 bg-gray-200 peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-blue-300 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:bg-blue-600"></div>
                        </label>
                    </div>
                </div>
            </div>
            
            <!-- Main Content -->
            <div class="main-content">
                <div>
                    <div class="flex justify-between items-center mb-6">
                        <h2 class="text-2xl font-bold">Video Blocks</h2>
                        <button class="btn btn-outline">
                            <i data-lucide="plus"></i>
                            Import Block
                        </button>
                    </div>
                    
                    <div class="blocks-grid">
                        <!-- Block 1 - Active -->
                        <div class="block-card ring-2 ring-blue-500">
                            <div class="block-preview" style="background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%)">
                                <div class="absolute inset-0 flex items-center justify-center">
                                    <div class="w-24 h-24 rounded bg-white/10"></div>
                                </div>
                                <div class="block-content">
                                    <h3 class="text-lg font-medium">Vocabulary Block</h3>
                                    <p class="text-sm text-white/80">Standard vocabulary block with word and phrases</p>
                                </div>
                                <span class="badge badge-blue absolute top-2 right-2">15s</span>
                            </div>
                            <div class="block-footer">
                                <button class="btn btn-primary w-full">
                                    <i data-lucide="check"></i>
                                    Selected
                                </button>
                            </div>
                        </div>
                        
                        <!-- Block 2 -->
                        <div class="block-card">
                            <div class="block-preview" style="background: linear-gradient(135deg, #16213e 0%, #0f3460 100%)">
                                <div class="absolute inset-0 flex items-center justify-center">
                                    <div class="w-24 h-24 rounded bg-white/10"></div>
                                </div>
                                <div class="block-content">
                                    <h3 class="text-lg font-medium">Grammar Block</h3>
                                    <p class="text-sm text-white/80">Block for grammar explanations with examples</p>
                                </div>
                                <span class="badge badge-blue absolute top-2 right-2">20s</span>
                            </div>
                            <div class="block-footer">
                                <button class="btn btn-outline w-full">Select Block</button>
                            </div>
                        </div>
                        
                        <!-- Block 3 -->
                        <div class="block-card">
                            <div class="block-preview" style="background: linear-gradient(135deg, #0f3460 0%, #950740 100%)">
                                <div class="absolute inset-0 flex items-center justify-center">
                                    <div class="w-24 h-24 rounded bg-white/10"></div>
                                </div>
                                <div class="block-content">
                                    <h3 class="text-lg font-medium">Conversation Block</h3>
                                    <p class="text-sm text-white/80">Dialog-based block for conversation practice</p>
                                </div>
                                <span class="badge badge-blue absolute top-2 right-2">30s</span>
                            </div>
                            <div class="block-footer">
                                <button class="btn btn-outline w-full">Select Block</button>
                            </div>
                        </div>
                    </div>
                    
                    <!-- Content View (Hidden) -->
                    <div class="hidden">
                        <div class="flex justify-between items-center mb-6">
                            <h2 class="text-2xl font-bold">Content</h2>
                            <div class="flex gap-2">
                                <select class="input w-40">
                                    <option>Español</option>
                                    <option>Français</option>
                                    <option>Deutsch</option>
                                    <option>Italiano</option>
                                </select>
                                
                                <select class="input w-40">
                                    <option>English</option>
                                    <option>Español</option>
                                    <option>Français</option>
                                    <option>Deutsch</option>
                                </select>
                            </div>
                        </div>
                        
                        <div class="content-table mb-6">
                            <div class="table-header text-sm">
                                <div>Target Word</div>
                                <div>Native Word</div>
                                <div>Target Phrase 1</div>
                                <div>Native Phrase 1</div>
                                <div>Actions</div>
                            </div>
                            
                            <div class="table-row">
                                <div>médico</div>
                                <div>doctor</div>
                                <div>quiere ser médico</div>
                                <div>he wants to be a doctor</div>
                                <div class="flex gap-1">
                                    <button class="p-1 text-gray-500 hover:text-gray-700">
                                        <i data-lucide="eye"></i>
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                                    <button class="p-1 text-gray-500 hover:text-gray-700">
                                        <i data-lucide="trash-2"></i>
                                    </button>
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                            </div>
                            
                            <div class="table-row">
                                <div>abogado</div>
                                <div>lawyer</div>
                                <div>estudia para abogado</div>
                                <div>he studies to be a lawyer</div>
                                <div class="flex gap-1">
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                                        <i data-lucide="eye"></i>
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                                    <button class="p-1 text-gray-500 hover:text-gray-700">
                                        <i data-lucide="trash-2"></i>
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                            <div class="table-input-row">
                                <div>
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                                <div>
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                                <div>
                                    <input type="text" class="input" placeholder="Target Phrase 1">
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                                <div>
                                    <input type="text" class="input" placeholder="Native Phrase 1">
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                                <div>
                                    <button class="btn btn-primary">
                                        <i data-lucide="plus"></i>
                                        Add
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                            </div>
                        </div>
                        
                        <div class="flex justify-between">
                            <button class="btn btn-outline">
                                <i data-lucide="volume-2"></i>
                                Generate Audio
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                            <button class="btn btn-primary">
                                Continue to Editor
                                <i data-lucide="chevron-down" class="rotate-270"></i>
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                    <!-- Editor View (Hidden) -->
                    <div class="hidden">
                        <div class="flex justify-between items-center mb-6">
                            <h2 class="text-2xl font-bold">Block Editor</h2>
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                        <!-- Preview Area -->
                        <div class="preview-area">
                            <!-- Word Element -->
                            <div class="preview-element" style="left: 50%; top: 20%; transform: translate(-50%, -50%); color: white; font-size: 36px; font-weight: bold; text-shadow: 0 1px 2px rgba(0,0,0,0.5);">
                                médico
                            </div>
                            
                            <!-- Block Element -->
                            <div class="preview-element" style="left: 30%; top: 35%; transform: translate(-50%, -50%); width: 200px; height: 200px; border-radius: 8px; background: linear-gradient(45deg, #3490dc, #6574cd);">
                            </div>
                            
                            <!-- Example Phrase 1 -->
                            <div class="preview-element" style="left: 50%; top: 65%; transform: translate(-50%, -50%); color: white; font-size: 24px; text-shadow: 0 1px 2px rgba(0,0,0,0.5);">
                                quiere ser médico
                            </div>
                            
                            <!-- Example Phrase 2 -->
                            <div class="preview-element" style="left: 50%; top: 80%; transform: translate(-50%, -50%); color: white; font-size: 24px; text-shadow: 0 1px 2px rgba(0,0,0,0.5);">
                                su médico es bueno
                            </div>
                            
                            <!-- Controls -->
                            <div class="absolute bottom-4 left-1/2 transform -translate-x-1/2 flex space-x-2 bg-black/70 rounded-full p-2">
                                <button class="text-white px-2">
                                    <i data-lucide="arrow-left" class="w-4 h-4"></i>
                                </button>
                                <button class="text-white px-2">
                                    <i data-lucide="play" class="w-5 h-5"></i>
                                </button>
                                <button class="text-white px-2">
                                    <i data-lucide="arrow-right" class="w-4 h-4"></i>
                                </button>
                            </div>
                            
                            <!-- Timeline Progress -->
                            <div class="absolute bottom-0 left-0 right-0 h-1 bg-gray-700">
                                <div class="h-full bg-blue-500" style="width: 25%;"></div>
                            </div>
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                        <!-- Timeline -->
                        <div class="timeline">
                            <!-- Time Markers -->
                            <div class="timeline-marker" style="left: 0%">0s</div>
                            <div class="timeline-marker" style="left: 20%">3s</div>
                            <div class="timeline-marker" style="left: 40%">6s</div>
                            <div class="timeline-marker" style="left: 60%">9s</div>
                            <div class="timeline-marker" style="left: 80%">12s</div>
                            <div class="timeline-marker" style="left: 100%">15s</div>
                            
                            <!-- Timeline Elements -->
                            <div class="timeline-element" style="left: 0%; width: 20%; background-color: rgba(59, 130, 246, 0.7); top: 0px;">
                                <div class="truncate text-xs text-white px-1 py-0.5">Vocabulary Word</div>
                            </div>
                            
                            <div class="timeline-element" style="left: 3.33%; width: 80%; background-color: rgba(16, 185, 129, 0.7);">
                                <div class="truncate text-xs text-white px-1 py-0.5">Color Block</div>
                            </div>
                            
                            <div class="timeline-element" style="left: 26.67%; width: 20%; background-color: rgba(59, 130, 246, 0.7);">
                                <div class="truncate text-xs text-white px-1 py-0.5">Example Phrase 1</div>
                            </div>
                            
                            <div class="timeline-element" style="left: 53.33%; width: 20%; background-color: rgba(59, 130, 246, 0.7);">
                                <div class="truncate text-xs text-white px-1 py-0.5">Example Phrase 2</div>
                            </div>
                            
                            <div class="timeline-element" style="left: 0%; width: 100%; background-color: rgba(124, 58, 237, 0.7); top: 35px;">
                                <div class="truncate text-xs text-white px-1 py-0.5">audio</div>
                            </div>
                            
                            <!-- Playhead -->
                            <div class="playhead" style="left: 25%;"></div>
                        </div>
                        
                        <div class="flex justify-between mt-4">
                            <div class="flex gap-2">
                                <button class="btn btn-outline">
                                    <i data-lucide="arrow-left"></i>
                                    Previous
                                </button>
                                <button class="btn btn-outline">
                                    Next
                                    <i data-lucide="arrow-right"></i>
                                </button>
                                <div class="bg-gray-100 px-2 py-1 rounded text-sm flex items-center">
                                    Item 1 of 2
                                </div>
                            </div>
                            
                            <button class="btn btn-primary">
                                Continue to Generate
                                <i data-lucide="chevron-down" class="rotate-270"></i>
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    
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                    card.querySelector('.block-footer button').innerHTML = '<i data-lucide="check"></i> Selected';
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                    // Automatically move to content tab
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</body>
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