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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>Quantum Tutor - AI Physics Learning Platform</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>
        /* Custom styles */
        .gradient-bg {
            background: linear-gradient(135deg, #6e8efb, #a777e3);
        }
        .topic-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .chat-message.ai {
            background-color: #f0f4ff;
            border-radius: 18px 18px 18px 4px;
        }
        .chat-message.user {
            background-color: #e3f2fd;
            border-radius: 18px 18px 4px 18px;
        }
        .simulation-window {
            min-height: 300px;
            background-color: #f8fafc;
            border: 1px solid #e2e8f0;
        }
        .tab-active {
            border-bottom: 3px solid #4f46e5;
            color: #4f46e5;
            font-weight: 600;
        }
        .formula-box {
            background-color: #f5f3ff;
            border-left: 4px solid #8b5cf6;
        }
        .progress-ring {
            transition: stroke-dashoffset 0.5s;
            transform: rotate(-90deg);
            transform-origin: 50% 50%;
        }
        .dark .gradient-bg {
            background: linear-gradient(135deg, #4b6cb7, #182848);
        }
        .dark .chat-message.ai {
            background-color: #1e293b;
        }
        .dark .chat-message.user {
            background-color: #334155;
        }
        .dark .formula-box {
            background-color: #1e1b4b;
            border-left: 4px solid #7c3aed;
        }
    </style>
</head>
<body class="bg-gray-50 text-gray-800 dark:bg-gray-900 dark:text-gray-200 transition-colors duration-200">
    <!-- Navigation -->
    <nav class="gradient-bg text-white shadow-lg">
        <div class="container mx-auto px-4 py-3 flex justify-between items-center">
            <div class="flex items-center space-x-2">
                <i class="fas fa-atom text-2xl"></i>
                <span class="text-xl font-bold">Quantum Tutor</span>
            </div>
            <div class="hidden md:flex space-x-6">
                <a href="#features" class="hover:text-gray-200 transition">Features</a>
                <a href="#tutor" class="hover:text-gray-200 transition">Tutor</a>
                <a href="#practice" class="hover:text-gray-200 transition">Practice</a>
                <a href="#progress" class="hover:text-gray-200 transition">Progress</a>
            </div>
            <div class="flex items-center space-x-4">
                <button id="theme-toggle" class="p-2 rounded-full hover:bg-white/10">
                    <i class="fas fa-moon hidden dark:block"></i>
                    <i class="fas fa-sun block dark:hidden"></i>
                </button>
                <button class="bg-white text-indigo-600 px-4 py-2 rounded-lg font-medium hover:bg-gray-100 transition">
                    Sign In
                </button>
                <button class="md:hidden" id="mobile-menu-button">
                    <i class="fas fa-bars text-xl"></i>
                </button>
            </div>
        </div>
        <!-- Mobile menu -->
        <div class="md:hidden hidden bg-indigo-700 px-4 py-2" id="mobile-menu">
            <div class="flex flex-col space-y-3">
                <a href="#features" class="text-white hover:text-gray-200 transition">Features</a>
                <a href="#tutor" class="text-white hover:text-gray-200 transition">Tutor</a>
                <a href="#practice" class="text-white hover:text-gray-200 transition">Practice</a>
                <a href="#progress" class="text-white hover:text-gray-200 transition">Progress</a>
            </div>
        </div>
    </nav>

    <!-- Hero Section -->
    <section class="gradient-bg text-white py-16">
        <div class="container mx-auto px-4 flex flex-col md:flex-row items-center">
            <div class="md:w-1/2 mb-8 md:mb-0">
                <h1 class="text-4xl md:text-5xl font-bold mb-4">Master Physics with AI</h1>
                <p class="text-xl mb-6">Your personalized AI tutor for all physics topics, from Newton's laws to quantum mechanics.</p>
                <div class="flex flex-col sm:flex-row space-y-3 sm:space-y-0 sm:space-x-4">
                    <button class="bg-white text-indigo-600 px-6 py-3 rounded-lg font-bold hover:bg-gray-100 transition">
                        Start Learning Now
                    </button>
                    <button class="border-2 border-white text-white px-6 py-3 rounded-lg font-bold hover:bg-white/10 transition">
                        Take a Tour
                    </button>
                </div>
            </div>
            <div class="md:w-1/2 flex justify-center">
                <div class="relative w-full max-w-md">
                    <div class="absolute -top-6 -left-6 w-32 h-32 bg-purple-300 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-blob"></div>
                    <div class="absolute -bottom-8 -right-8 w-32 h-32 bg-blue-300 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-blob animation-delay-2000"></div>
                    <div class="relative bg-white/10 backdrop-blur-md rounded-2xl p-6 shadow-xl">
                        <div class="flex items-center mb-4">
                            <div class="w-3 h-3 rounded-full bg-red-500 mr-2"></div>
                            <div class="w-3 h-3 rounded-full bg-yellow-500 mr-2"></div>
                            <div class="w-3 h-3 rounded-full bg-green-500 mr-2"></div>
                            <p class="text-sm ml-2">AI Physics Tutor</p>
                        </div>
                        <div class="chat-message ai mb-4 p-4">
                            <p>Hi! I'm your AI Physics Tutor. What would you like to learn today?</p>
                            <p class="text-xs text-gray-300 mt-1">Just now</p>
                        </div>
                        <div class="flex space-x-2">
                            <button class="bg-white/20 text-xs px-3 py-1 rounded-full hover:bg-white/30 transition">Newton's Laws</button>
                            <button class="bg-white/20 text-xs px-3 py-1 rounded-full hover:bg-white/30 transition">Quantum Physics</button>
                            <button class="bg-white/20 text-xs px-3 py-1 rounded-full hover:bg-white/30 transition">Electromagnetism</button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- Features Section -->
    <section id="features" class="py-16 bg-white dark:bg-gray-800">
        <div class="container mx-auto px-4">
            <h2 class="text-3xl font-bold text-center mb-12">Powerful Learning Tools</h2>
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
                <!-- Feature 1 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-indigo-100 dark:bg-indigo-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-robot text-indigo-600 dark:text-indigo-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Smart Teaching Engine</h3>
                    <p class="text-gray-600 dark:text-gray-300">Adapts to your learning style with visual, auditory, or hands-on explanations tailored just for you.</p>
                </div>
                <!-- Feature 2 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-blue-100 dark:bg-blue-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-comments text-blue-600 dark:text-blue-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Physics Chatbot</h3>
                    <p class="text-gray-600 dark:text-gray-300">Get instant answers to any physics question with clear explanations and relevant examples.</p>
                </div>
                <!-- Feature 3 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-purple-100 dark:bg-purple-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-tasks text-purple-600 dark:text-purple-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Practice Generator</h3>
                    <p class="text-gray-600 dark:text-gray-300">Customized practice problems with detailed solutions for every topic and difficulty level.</p>
                </div>
                <!-- Feature 4 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-green-100 dark:bg-green-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-book text-green-600 dark:text-green-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Note Maker</h3>
                    <p class="text-gray-600 dark:text-gray-300">Beautiful, organized notes with formulas, diagrams, and examples that you can export.</p>
                </div>
                <!-- Feature 5 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-yellow-100 dark:bg-yellow-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-layer-group text-yellow-600 dark:text-yellow-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Flashcards</h3>
                    <p class="text-gray-600 dark:text-gray-300">Smart flashcards with spaced repetition to help you memorize key concepts effectively.</p>
                </div>
                <!-- Feature 6 -->
                <div class="bg-gray-50 dark:bg-gray-700 p-6 rounded-xl shadow-md hover:shadow-lg transition">
                    <div class="w-12 h-12 bg-red-100 dark:bg-red-900 rounded-lg flex items-center justify-center mb-4">
                        <i class="fas fa-chart-line text-red-600 dark:text-red-300 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-2">Progress Tracking</h3>
                    <p class="text-gray-600 dark:text-gray-300">Detailed analytics and personalized study plans based on your strengths and weaknesses.</p>
                </div>
            </div>
        </div>
    </section>

    <!-- AI Tutor Section -->
    <section id="tutor" class="py-16 bg-gray-50 dark:bg-gray-900">
        <div class="container mx-auto px-4">
            <h2 class="text-3xl font-bold text-center mb-12">Interactive AI Physics Tutor</h2>
            <div class="flex flex-col lg:flex-row gap-8">
                <!-- Topics List -->
                <div class="lg:w-1/3">
                    <div class="bg-white dark:bg-gray-800 rounded-xl shadow-md p-6 sticky top-4">
                        <h3 class="text-xl font-semibold mb-4">Physics Topics</h3>
                        <div class="space-y-2">
                            <div class="accordion-group">
                                <button class="accordion-button flex justify-between items-center w-full py-2 font-medium text-left">
                                    <span>Classical Mechanics</span>
                                    <i class="fas fa-chevron-down transition-transform duration-300"></i>
                                </button>
                                <div class="accordion-content hidden pl-4 mt-2">
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Newton's Laws</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Work & Energy</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Momentum</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Rotational Motion</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Gravitation</a>
                                </div>
                            </div>
                            <div class="accordion-group">
                                <button class="accordion-button flex justify-between items-center w-full py-2 font-medium text-left">
                                    <span>Electromagnetism</span>
                                    <i class="fas fa-chevron-down transition-transform duration-300"></i>
                                </button>
                                <div class="accordion-content hidden pl-4 mt-2">
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Electric Fields</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Magnetism</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Circuits</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Electromagnetic Waves</a>
                                </div>
                            </div>
                            <div class="accordion-group">
                                <button class="accordion-button flex justify-between items-center w-full py-2 font-medium text-left">
                                    <span>Thermodynamics</span>
                                    <i class="fas fa-chevron-down transition-transform duration-300"></i>
                                </button>
                                <div class="accordion-content hidden pl-4 mt-2">
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Laws of Thermodynamics</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Heat Transfer</a>
                                    <a href="#" class="block py-1 hover:text-indigo-600 dark:hover:text-indigo-300">Entropy</a>
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                                <p class="text-xs opacity-80">Teaching: Newton's Laws of Motion</p>
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                                    <h4 class="font-bold mb-2">Newton's First Law (Law of Inertia)</h4>
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                                        <p class="font-mono">ΣF = 0 ⇒ a = 0</p>
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                                    <p class="mb-3">This means if the net force on an object is zero, its acceleration is zero, maintaining its current state of motion.</p>
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                                            <li>When moving at constant velocity (no acceleration), the block stays centered</li>
                                            <li>When the cart stops suddenly, the block continues moving forward due to inertia</li>
                                            <li>This demonstrates Newton's First Law in action</li>
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                                <i class="fas fa-check-circle text-green-500 mr-2"></i> Correct Answer: 0 N
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                            <h3>Newton's First Law (Law of Inertia)</h3>
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