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<!DOCTYPE html>
<html lang="fr">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>EduVision - Plateforme Éducative Intelligente</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">
    <script>
        tailwind.config = {
            theme: {
                extend: {
                    colors: {
                        primary: {
                            50: '#f0f9ff',
                            100: '#e0f2fe',
                            200: '#bae6fd',
                            300: '#7dd3fc',
                            400: '#38bdf8',
                            500: '#0ea5e9',
                            600: '#0284c7',
                            700: '#0369a1',
                            800: '#075985',
                            900: '#0c4a6e',
                        },
                        secondary: {
                            50: '#f5f3ff',
                            100: '#ede9fe',
                            200: '#ddd6fe',
                            300: '#c4b5fd',
                            400: '#a78bfa',
                            500: '#8b5cf6',
                            600: '#7c3aed',
                            700: '#6d28d9',
                            800: '#5b21b6',
                            900: '#4c1d95',
                        },
                        dark: '#1e293b',
                        light: '#f8fafc',
                    },
                    animation: {
                        'float': 'float 6s ease-in-out infinite',
                        'float-reverse': 'float-reverse 5s ease-in-out infinite',
                        'pulse-slow': 'pulse 4s cubic-bezier(0.4, 0, 0.6, 1) infinite',
                        'wave': 'wave 12s linear infinite',
                        'gradient': 'gradient 8s ease infinite',
                    },
                    keyframes: {
                        float: {
                            '0%, 100%': { transform: 'translateY(0)' },
                            '50%': { transform: 'translateY(-20px)' },
                        },
                        'float-reverse': {
                            '0%, 100%': { transform: 'translateY(0)' },
                            '50%': { transform: 'translateY(20px)' },
                        },
                        wave: {
                            '0%': { transform: 'translateX(0)' },
                            '100%': { transform: 'translateX(-100%)' },
                        },
                        gradient: {
                            '0%, 100%': { 'background-position': '0% 50%' },
                            '50%': { 'background-position': '100% 50%' },
                        }
                    }
                }
            }
        }
    </script>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f8fafc;
            overflow-x: hidden;
        }
        
        .gradient-bg {
            background: linear-gradient(135deg, #0ea5e9, #8b5cf6);
            background-size: 200% 200%;
            animation: gradient 8s ease infinite;
        }
        
        .glass-effect {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        
        .card-hover {
            transition: all 0.3s ease;
        }
        
        .card-hover:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .ai-chat-bubble {
            border-radius: 24px 24px 24px 4px;
        }
        
        .user-chat-bubble {
            border-radius: 24px 24px 4px 24px;
        }
        
        .wave-shape {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            overflow: hidden;
            line-height: 0;
        }
        
        .wave-shape svg {
            position: relative;
            display: block;
            width: calc(100% + 1.3px);
            height: 150px;
        }
        
        .wave-shape .shape-fill {
            fill: #FFFFFF;
        }
        
        .feature-icon {
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin: 0 auto;
            font-size: 32px;
        }
        
        .course-card {
            perspective: 1000px;
        }
        
        .course-card-inner {
            transition: transform 0.6s;
            transform-style: preserve-3d;
        }
        
        .course-card:hover .course-card-inner {
            transform: rotateY(10deg) scale(1.03);
        }
        
        .progress-ring {
            transform: rotate(-90deg);
        }
        
        .progress-ring-circle {
            stroke-dasharray: 283;
            stroke-dashoffset: 283;
            transition: stroke-dashoffset 0.5s;
        }
        
        .typing-indicator span {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #8b5cf6;
            margin: 0 2px;
            opacity: 0.4;
        }
        
        .typing-indicator span:nth-child(1) {
            animation: typing-pulse 1s infinite;
        }
        
        .typing-indicator span:nth-child(2) {
            animation: typing-pulse 1s infinite 0.2s;
        }
        
        .typing-indicator span:nth-child(3) {
            animation: typing-pulse 1s infinite 0.4s;
        }
        
        @keyframes typing-pulse {
            0%, 100% { opacity: 0.4; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.2); }
        }
        
        .floating-shapes {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: -1;
            overflow: hidden;
        }
        
        .floating-shape {
            position: absolute;
            opacity: 0.1;
            border-radius: 50%;
            filter: blur(40px);
        }
        
        .floating-shape-1 {
            width: 300px;
            height: 300px;
            background: #0ea5e9;
            top: 10%;
            left: 10%;
            animation: float 8s ease-in-out infinite;
        }
        
        .floating-shape-2 {
            width: 400px;
            height: 400px;
            background: #8b5cf6;
            top: 60%;
            left: 70%;
            animation: float-reverse 10s ease-in-out infinite;
        }
        
        .floating-shape-3 {
            width: 200px;
            height: 200px;
            background: #ec4899;
            top: 30%;
            left: 50%;
            animation: float 7s ease-in-out infinite reverse;
        }
        
        .ai-response-loader {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .ai-response-loader div {
            width: 12px;
            height: 12px;
            margin: 0 4px;
            background-color: #8b5cf6;
            border-radius: 50%;
            display: inline-block;
            animation: bounce 1.4s infinite ease-in-out both;
        }
        
        .ai-response-loader div:nth-child(1) {
            animation-delay: -0.32s;
        }
        
        .ai-response-loader div:nth-child(2) {
            animation-delay: -0.16s;
        }
        
        @keyframes bounce {
            0%, 80%, 100% { 
                transform: scale(0);
            }
            40% { 
                transform: scale(1);
            }
        }
        
        .wave-animation {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 200%;
            height: 100%;
            background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23ffffff' opacity='.25'/%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60-48.47V0Z' fill='%23ffffff' opacity='.5'/%3E%3Cpath d='M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z' fill='%23ffffff'/%3E%3C/svg%3E") repeat-x;
            background-size: 50% 100%;
            animation: wave 12s linear infinite;
            transform-origin: bottom;
        }
        
        .knowledge-graph {
            position: relative;
            width: 100%;
            height: 400px;
            background: #f8fafc;
            border-radius: 16px;
            overflow: hidden;
        }
        
        .knowledge-node {
            position: absolute;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: white;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 2;
        }
        
        .knowledge-node:hover {
            transform: scale(1.1);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }
        
        .knowledge-connection {
            position: absolute;
            height: 2px;
            background: rgba(139, 92, 246, 0.3);
            transform-origin: 0 0;
            z-index: 1;
        }
        
        .dashboard-card {
            transition: all 0.3s ease;
            border-left: 4px solid transparent;
        }
        
        .dashboard-card:hover {
            transform: translateY(-5px);
            border-left-color: #8b5cf6;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        
        .learning-path {
            position: relative;
        }
        
        .learning-path::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: #e2e8f0;
            z-index: 1;
        }
        
        .learning-step {
            position: relative;
            z-index: 2;
        }
        
        .learning-step::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 24px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #8b5cf6;
            z-index: 3;
        }
        
        .interactive-3d {
            transform-style: preserve-3d;
            transition: transform 0.5s;
        }
        
        .interactive-3d:hover {
            transform: rotateX(5deg) rotateY(5deg) scale(1.02);
        }
        
        .parallax-bg {
            background-attachment: fixed;
            background-position: center;
            background-repeat: no-repeat;
            background-size: cover;
        }
        
        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 50px;
            border: 2px solid white;
            border-radius: 15px;
        }
        
        .scroll-indicator::before {
            content: '';
            position: absolute;
            top: 8px;
            left: 50%;
            width: 6px;
            height: 6px;
            background: white;
            border-radius: 50%;
            transform: translateX(-50%);
            animation: scroll 2s infinite;
        }
        
        @keyframes scroll {
            0% { transform: translate(-50%, 0); opacity: 1; }
            100% { transform: translate(-50%, 20px); opacity: 0; }
        }
        
        /* Dark mode toggle styles */
        .toggle-checkbox:checked {
            right: 0;
            border-color: #8b5cf6;
        }
        
        .toggle-checkbox:checked + .toggle-label {
            background-color: #8b5cf6;
        }
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            .knowledge-graph {
                height: 300px;
            }
            
            .wave-animation {
                animation: wave 20s linear infinite;
            }
        }
    </style>
</head>
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                        L'éducation <span class="text-primary-600">réinventée</span> par l'IA
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                    <div class="glass-effect rounded-3xl overflow-hidden shadow-2xl">
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                                <p class="font-semibold">Analyse intelligente</p>
                                <p class="text-sm text-gray-500">Vos progrès en temps réel</p>
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    </section>

    <!-- Features Section -->
    <section id="features" class="py-16 bg-white">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
            <div class="text-center mb-16">
                <span class="text-primary-600 font-semibold">FONCTIONNALITÉS INNOVANTES</span>
                <h2 class="text-3xl md:text-4xl font-bold mt-2 mb-4">Une expérience d'apprentissage révolutionnaire</h2>
                <p class="text-lg text-gray-600 max-w-3xl mx-auto">
                    Notre plateforme combine les dernières avancées en IA avec des méthodes pédagogiques éprouvées pour une expérience d'apprentissage personnalisée.
                </p>
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            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
                <!-- Feature 1 -->
                <div class="bg-white rounded-xl p-8 shadow-lg card-hover">
                    <div class="feature-icon bg-primary-100 text-primary-600 mb-6">
                        <i class="fas fa-user-astronaut"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Tuteur IA personnalisé</h3>
                    <p class="text-gray-600 mb-4">
                        Un assistant intelligent qui s'adapte à votre style d'apprentissage, répond à vos questions et vous guide à travers les concepts difficiles.
                    </p>
                    <div class="flex items-center text-primary-600 font-medium">
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                    </div>
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                <!-- Feature 2 -->
                <div class="bg-white rounded-xl p-8 shadow-lg card-hover">
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                    <h3 class="text-xl font-bold mb-3">Cartographie des connaissances</h3>
                    <p class="text-gray-600 mb-4">
                        Visualisez les relations entre les concepts et identifiez vos lacunes pour un apprentissage plus efficace et ciblé.
                    </p>
                    <div class="flex items-center text-secondary-600 font-medium">
                        <span>En savoir plus</span>
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                    </div>
                </div>
                
                <!-- Feature 3 -->
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                    <div class="feature-icon bg-yellow-100 text-yellow-600 mb-6">
                        <i class="fas fa-chart-line"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Analyse des progrès</h3>
                    <p class="text-gray-600 mb-4">
                        Des tableaux de bord intelligents qui suivent vos progrès et suggèrent des domaines à améliorer pour maximiser votre apprentissage.
                    </p>
                    <div class="flex items-center text-yellow-600 font-medium">
                        <span>En savoir plus</span>
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                    </div>
                </div>
                
                <!-- Feature 4 -->
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                    <div class="feature-icon bg-purple-100 text-purple-600 mb-6">
                        <i class="fas fa-vr-cardboard"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Expériences immersives</h3>
                    <p class="text-gray-600 mb-4">
                        Apprenez grâce à des simulations interactives et des environnements virtuels qui rendent les concepts abstraits tangibles.
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                        <span>En savoir plus</span>
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                    </div>
                </div>
                
                <!-- Feature 5 -->
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                    </div>
                    <h3 class="text-xl font-bold mb-3">Apprentissage collaboratif</h3>
                    <p class="text-gray-600 mb-4">
                        Travaillez avec d'autres apprenants dans des espaces virtuels, résolvez des problèmes ensemble et partagez vos connaissances.
                    </p>
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                        Notre système ajuste automatiquement la difficulté et le style de contenu en fonction de vos performances et préférences.
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    </section>

    <!-- Knowledge Graph Demo -->
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        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
            <div class="lg:grid lg:grid-cols-2 lg:gap-12 items-center">
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                    <span class="text-primary-600 font-semibold">APPRENTISSAGE CONNECTÉ</span>
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                    <p class="text-lg text-gray-600 mb-8">
                        Notre système crée une carte personnalisée de vos connaissances, mettant en évidence les relations entre les concepts et identifiant les domaines à renforcer.
                    </p>
                    <ul class="space-y-4">
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                                <i class="fas fa-check text-primary-600 text-sm"></i>
                            </div>
                            <div>
                                <h4 class="font-semibold">Visualisation des connexions</h4>
                                <p class="text-gray-600">Comprenez comment les concepts s'articulent entre eux pour une meilleure rétention.</p>
                            </div>
                        </li>
                        <li class="flex items-start">
                            <div class="bg-primary-100 p-2 rounded-full mr-4 mt-1">
                                <i class="fas fa-check text-primary-600 text-sm"></i>
                            </div>
                            <div>
                                <h4 class="font-semibold">Identification des lacunes</h4>
                                <p class="text-gray-600">L'IA détecte automatiquement les concepts mal maîtrisés pour un apprentissage ciblé.</p>
                            </div>
                        </li>
                        <li class="flex items-start">
                            <div class="bg-primary-100 p-2 rounded-full mr-4 mt-1">
                                <i class="fas fa-check text-primary-600 text-sm"></i>
                            </div>
                            <div>
                                <h4 class="font-semibold">Parcours personnalisé</h4>
                                <p class="text-gray-600">Un itinéraire d'apprentissage optimisé en fonction de vos objectifs et compétences.</p>
                            </div>
                        </li>
                    </ul>
                </div>
                <div class="relative">
                    <div class="knowledge-graph shadow-xl rounded-2xl overflow-hidden">
                        <!-- Knowledge nodes will be added dynamically with JavaScript -->
                    </div>
                    <div class="absolute bottom-4 left-4 bg-white px-4 py-2 rounded-lg shadow-md">
                        <p class="text-sm font-medium">Cliquez sur un nœud pour explorer</p>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- AI Tutor Section -->
    <section id="ai-tutor" class="py-16 bg-white">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
            <div class="text-center mb-16">
                <span class="text-primary-600 font-semibold">TUTEUR INTELLIGENT</span>
                <h2 class="text-3xl md:text-4xl font-bold mt-2 mb-4">Votre assistant pédagogique IA 24/7</h2>
                <p class="text-lg text-gray-600 max-w-3xl mx-auto">
                    Posez des questions, obtenez des explications détaillées et recevez un soutien personnalisé à tout moment.
                </p>
            </div>
            
            <div class="grid grid-cols-1 lg:grid-cols-3 gap-8">
                <div class="lg:col-span-2">
                    <div class="bg-gray-50 rounded-2xl shadow-lg overflow-hidden">
                        <div class="bg-gradient-to-r from-primary-500 to-secondary-500 p-4 text-white">
                            <div class="flex items-center">
                                <div class="bg-white/20 p-2 rounded-full mr-3">
                                    <i class="fas fa-robot"></i>
                                </div>
                                <div>
                                    <h3 class="font-semibold">Assistant EduVision</h3>
                                    <p class="text-sm opacity-80">Disponible pour vous aider</p>
                                </div>
                            </div>
                        </div>
                        <div class="p-6 h-96 overflow-y-auto" id="chat-container">
                            <!-- AI Tutor chat messages will be added here -->
                            <div class="flex mb-4">
                                <div class="flex-shrink-0 mr-3">
                                    <div class="bg-primary-100 text-primary-600 rounded-full w-10 h-10 flex items-center justify-center">
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                                    </div>
                                </div>
                                <div class="bg-gray-100 text-gray-800 p-4 rounded-2xl ai-chat-bubble max-w-xs md:max-w-md">
                                    <p>Bonjour ! Je suis votre assistant pédagogique IA. Comment puis-je vous aider aujourd'hui ?</p>
                                </div>
                            </div>
                        </div>
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                                    <h4 class="font-semibold mb-1">Explications claires</h4>
                                    <p class="text-gray-600 text-sm">Obtenez des explications adaptées à votre niveau de compréhension.</p>
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                                    <h4 class="font-semibold mb-1">Réponses instantanées</h4>
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                                    <h4 class="font-semibold mb-1">Connexions conceptuelles</h4>
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                                    <h4 class="font-semibold mb-1">Suivi des progrès</h4>
                                    <p class="text-gray-600 text-sm">Votre tuteur suit votre évolution et adapte ses explications.</p>
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                                    <p class="text-3xl font-bold">24.5 <span class="text-lg text-gray-500">h</span></p>
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                                <span>12% par rapport au mois dernier</span>
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                                    <p class="text-3xl font-bold">87 <span class="text-lg text-gray-500">/100</span></p>
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                                <span>8 nouveaux ce mois-ci</span>
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                                    <h3 class="text-gray-500 font-medium">Niveau actuel</h3>
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                                                <span class="text-gray-500 mr-3">Progression: 85%</span>
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                                                <span class="text-gray-500 mr-3">Progression: 42%</span>
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                                                <span class="text-gray-500 mr-3">Progression: 15%</span>
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                            <h3 class="text-xl font-bold mb-3">Fondamentaux du Machine Learning</h3>
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                            <h3 class="text-xl font-bold mb-3">Algèbre Linéaire Appliquée</h3>
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                                    <span class="font-medium">4.7</span>
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