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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>Clarity AI | Medical Analysis</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
    <style>
        * {
            font-family: 'Inter', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 100vh;
            overflow: hidden;
        }
        
        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            transition: all 0.2s ease;
        }
        
        .glass-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            transition: all 0.2s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        .user-message {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }

        .bot-message {
            background: rgba(248, 250, 252, 0.95);
            color: #334155;
            border: 1px solid rgba(226, 232, 240, 0.5);
        }

        .upload-zone {
            transition: all 0.2s ease;
            border: 2px dashed rgba(255, 255, 255, 0.4);
            background: rgba(255, 255, 255, 0.1);
        }

        .upload-zone:hover {
            border-color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.15);
            transform: scale(1.01);
        }

        .upload-zone.dragover {
            border-color: #ffd700;
            background: rgba(255, 215, 0, 0.1);
        }

        .chat-container {
            height: calc(100vh - 120px);
            display: flex;
            flex-direction: column;
        }

        .chat-messages {
            flex: 1;
            overflow-y: auto;
            min-height: 0;
        }

        .main-container {
            height: calc(100vh - 80px);
            overflow-y: auto;
        }

        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(102, 126, 234, 0.6);
            border-radius: 10px;
        }

        .fade-in {
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .glassmorphism-header {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }

        .progress-bar {
            background: linear-gradient(90deg, #667eea, #764ba2);
            transition: width 1s ease;
        }

        .typing-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #667eea;
            margin: 0 1px;
            animation: typing 1s infinite ease-in-out;
        }

        .typing-dot:nth-child(1) { animation-delay: 0s; }
        .typing-dot:nth-child(2) { animation-delay: 0.2s; }
        .typing-dot:nth-child(3) { animation-delay: 0.4s; }

        @keyframes typing {
            0%, 60%, 100% { transform: scale(0.8); opacity: 0.5; }
            30% { transform: scale(1); opacity: 1; }
        }
    </style>
</head>
<body class="antialiased text-gray-800">

    <!-- Header -->
    <header class="glassmorphism-header h-20 flex-shrink-0 z-50">
        <nav class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-full flex justify-between items-center">
            <div class="flex items-center space-x-3">
                <div class="bg-gradient-to-r from-white to-gray-100 p-2 rounded-xl shadow-lg">
                    <svg class="w-6 h-6 text-purple-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
                    </svg>
                </div>
                <div>
                    <h1 class="text-xl font-bold text-white">Clarity AI</h1>
                    <p class="text-xs text-white/80">Medical Analysis</p>
                </div>
            </div>
            <div class="flex items-center space-x-4">
                <!-- Public app: no auth controls -->
            </div>
        </nav>
    </header>

    <!-- Main Container -->
    <main class="main-container">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
            
            <!-- Upload Section -->
            <section class="glass-card p-6 mb-6 fade-in">
                <div class="flex items-center justify-between mb-6">
                    <h2 class="text-2xl font-bold text-gray-800">Medical Image Analysis</h2>
                    <div class="hidden sm:block text-sm text-gray-500 bg-gray-100 px-3 py-1 rounded-full">Step 1</div>
                </div>
                
                <form id="upload-form" class="grid grid-cols-1 lg:grid-cols-2 gap-6">
                    <!-- Model Selection -->
                    <div>
                        <label for="model-select" class="block text-lg font-semibold text-gray-700 mb-3">Choose Model</label>
                        <select id="model-select" name="model" class="w-full p-3 text-lg border-2 border-gray-200 focus:ring-2 focus:ring-purple-500 focus:border-purple-500 rounded-xl transition-all">
                            <option value="Brain Tumor">🧠 Brain Tumor</option>
                            <option value="Kvasir">🔬 Gastrointestinal</option>
                            <option value="Pneumonia">🫁 Pneumonia</option>
                            <option value="Skin Cancer">🩺 Skin Cancer</option>
                            <option value="Tuberculosis">🦠 Tuberculosis</option>
                        </select>
                    </div>
                    
                    <!-- Image Upload -->
                    <div>
                        <label class="block text-lg font-semibold text-gray-700 mb-3">Upload Image</label>
                        <div id="upload-container">
                            <!-- Image Preview -->
                            <div id="image-preview-container" class="hidden mb-4">
                                <div class="relative rounded-xl overflow-hidden shadow-lg">
                                    <img id="image-preview" src="#" alt="Preview" class="w-full h-40 object-cover">
                                    <button type="button" id="remove-image" class="absolute top-2 right-2 bg-red-500 text-white rounded-full w-8 h-8 flex items-center justify-center hover:bg-red-600 transition-colors">×</button>
                                </div>
                            </div>
                            
                            <!-- Upload Zone -->
                            <div id="upload-zone" class="upload-zone rounded-xl p-8 text-center cursor-pointer">
                                <svg class="mx-auto h-12 w-12 text-white/80 mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path>
                                </svg>
                                <p class="text-lg font-medium text-white mb-2">Drop image here or click</p>
                                <p class="text-white/70 text-sm">JPG, PNG, GIF up to 10MB</p>
                            </div>
                            <input id="file-upload-hidden" name="file" type="file" accept="image/*" class="hidden"/>
                        </div>

                        <!-- Examples Gallery -->
                        <div class="mt-6">
                            <div class="flex items-center justify-between mb-3">
                                <h3 class="text-lg font-semibold text-gray-700">Or pick an example</h3>
                                <button type="button" id="refresh-examples" class="text-sm text-indigo-700 hover:underline">Refresh</button>
                            </div>
                            <div id="examples-container" class="grid grid-cols-2 sm:grid-cols-3 gap-3"></div>
                            <p id="examples-empty" class="text-sm text-gray-500 hidden">No examples found.</p>
                        </div>
                    </div>
                    
                    <!-- Submit Button -->
                    <div class="lg:col-span-2">
                        <button type="submit" class="w-full btn-primary font-bold py-4 px-6 rounded-xl text-lg flex items-center justify-center">
                            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"></path>
                            </svg>
                            Analyze Image
                        </button>
                    </div>
                </form>
            </section>

            <!-- Results Section -->
            <section id="results-section" class="hidden">
                <div class="grid grid-cols-1 xl:grid-cols-3 gap-6">
                    
                    <!-- Results Panel -->
                    <div class="xl:col-span-2 glass-card p-6 fade-in">
                        <h2 class="text-xl font-bold text-gray-800 mb-4 flex items-center">
                            <svg class="w-5 h-5 mr-2 text-green-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 11-6 0 3 3 0 016 0z"></path>
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
                            </svg>
                            Analysis Results
                        </h2>
                        
                        <div id="results-content" class="space-y-6">
                            <div id="prediction-output"></div>
                            <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                <div>
                                    <h3 class="font-semibold mb-3 text-gray-700 text-center">Original Image</h3>
                                    <img id="original-image" src="" class="w-full h-auto rounded-lg shadow-md">
                                </div>
                                <div>
                                    <h3 class="font-semibold mb-3 text-gray-700 text-center">AI Focus Map</h3>
                                    <div id="gradcam-container">
                                        <img id="gradcam-image" src="" class="w-full h-auto rounded-lg shadow-md hidden">
                                        <div id="gradcam-placeholder" class="flex items-center justify-center h-32 bg-gray-100 rounded-lg text-gray-500">
                                            <div class="text-center">
                                                <svg class="w-8 h-8 mx-auto mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                                                </svg>
                                                <p class="text-sm">Not Available</p>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Chat Panel -->
                    <div id="chat-card" class="glass-card opacity-50 pointer-events-none transition-all duration-300 fade-in">
                        <div class="chat-container p-6">
                            <div class="flex items-center justify-between mb-4">
                                <h2 class="text-xl font-bold text-gray-800 flex items-center">
                                    <svg class="w-5 h-5 mr-2 text-purple-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z"></path>
                                    </svg>
                                    AI Assistant
                                </h2>
                                <div id="chat-status" class="bg-yellow-100 text-yellow-800 px-2 py-1 rounded-full text-xs">Waiting</div>
                            </div>
                            
                            <div class="chat-messages mb-4 p-3 bg-gray-50 rounded-xl border space-y-3">
                                <div id="chat-messages">
                                    <div class="bot-message p-3 rounded-xl max-w-[90%]">
                                        <div class="flex items-center mb-2">
                                            <div class="w-2 h-2 bg-yellow-400 rounded-full mr-2"></div>
                                            <span class="text-xs text-gray-500">SYSTEM</span>
                                        </div>
                                        Run an analysis to activate the AI assistant.
                                    </div>
                                </div>
                            </div>
                            
                            <div id="predefined-prompts-container" class="flex flex-wrap gap-2 mb-4 empty:hidden"></div>
                            
                            <form id="chat-form" class="flex bg-white rounded-xl shadow-sm overflow-hidden">
                                <input type="text" id="chat-input" class="flex-1 p-3 focus:outline-none" placeholder="Ask about results..." disabled>
                                <button type="submit" id="chat-submit" class="btn-primary px-4 flex items-center rounded-none" disabled>
                                    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 19l9 2-9-18-9 18 9-2zm0 0v-8"></path>
                                    </svg>
                                </button>
                            </form>
                        </div>
                    </div>
                </div>
            </section>
        </div>
    </main>

    <script>
        // Element references
        const uploadForm = document.getElementById('upload-form');
        const fileUploadHidden = document.getElementById('file-upload-hidden');
        const uploadZone = document.getElementById('upload-zone');
        const imagePreviewContainer = document.getElementById('image-preview-container');
        const imagePreview = document.getElementById('image-preview');
        const removeImageBtn = document.getElementById('remove-image');
        const resultsSection = document.getElementById('results-section');
        const predictionOutput = document.getElementById('prediction-output');
        const originalImage = document.getElementById('original-image');
        const gradcamImage = document.getElementById('gradcam-image');
        const gradcamPlaceholder = document.getElementById('gradcam-placeholder');
        const chatCard = document.getElementById('chat-card');
        const chatStatus = document.getElementById('chat-status');
        const chatMessages = document.getElementById('chat-messages');
        const chatInput = document.getElementById('chat-input');
        const chatSubmit = document.getElementById('chat-submit');
        const chatForm = document.getElementById('chat-form');
        const promptsContainer = document.getElementById('predefined-prompts-container');
        const modelSelect = document.getElementById('model-select');
        const examplesContainer = document.getElementById('examples-container');
        const examplesEmpty = document.getElementById('examples-empty');
        const refreshExamplesBtn = document.getElementById('refresh-examples');

        let predictionContext = null;
        let chatHistory = [];
        let cachedExamples = [];
        
        // File upload handling
        uploadZone.addEventListener('click', () => fileUploadHidden.click());
        
        uploadZone.addEventListener('dragover', (e) => {
            e.preventDefault();
            uploadZone.classList.add('dragover');
        });
        
        uploadZone.addEventListener('dragleave', () => {
            uploadZone.classList.remove('dragover');
        });
        
        uploadZone.addEventListener('drop', (e) => {
            e.preventDefault();
            uploadZone.classList.remove('dragover');
            const files = e.dataTransfer.files;
            if (files.length > 0) {
                fileUploadHidden.files = files;
                handleFileSelect(files[0]);
            }
        });

        fileUploadHidden.addEventListener('change', function() {
            if (this.files[0]) {
                handleFileSelect(this.files[0]);
            }
        });

        removeImageBtn.addEventListener('click', () => {
            imagePreviewContainer.classList.add('hidden');
            uploadZone.style.display = 'block';
            fileUploadHidden.value = '';
        });

        function handleFileSelect(file) {
            if (!file.type.startsWith('image/')) {
                alert('Please select an image file.');
                return;
            }
            if (file.size > 10 * 1024 * 1024) {
                alert('File size must be less than 10MB.');
                return;
            }
            
            const reader = new FileReader();
            reader.onload = (e) => {
                imagePreview.src = e.target.result;
                imagePreviewContainer.classList.remove('hidden');
                uploadZone.style.display = 'none';
            };
            reader.readAsDataURL(file);
        }

        uploadForm.addEventListener('submit', async (e) => {
            e.preventDefault();
            if (!fileUploadHidden.files[0]) {
                alert("Please select an image file first.");
                return;
            }
            
            const submitButton = uploadForm.querySelector('button[type="submit"]');
            const originalText = submitButton.innerHTML;
            submitButton.disabled = true;
            submitButton.innerHTML = `
                <div class="flex items-center">
                    <div class="flex space-x-1 mr-2">
                        <div class="typing-dot"></div>
                        <div class="typing-dot"></div>
                        <div class="typing-dot"></div>
                    </div>
                    Analyzing...
                </div>
            `;
            
            // Reset states
            resultsSection.classList.add('hidden');
            chatCard.classList.add('opacity-50', 'pointer-events-none');
            chatStatus.textContent = 'Analyzing';
            chatStatus.className = 'bg-blue-100 text-blue-800 px-2 py-1 rounded-full text-xs';
            chatInput.disabled = true;
            chatSubmit.disabled = true;
            
            chatMessages.innerHTML = `
                <div class="bot-message p-3 rounded-xl max-w-[90%]">
                    <div class="flex items-center mb-2">
                        <div class="flex space-x-1 mr-2">
                            <div class="typing-dot"></div>
                            <div class="typing-dot"></div>
                            <div class="typing-dot"></div>
                        </div>
                        <span class="text-xs text-gray-500">ANALYZING</span>
                    </div>
                    Processing your medical image...
                </div>
            `;
            
            predictionContext = null;
            chatHistory = [];
            promptsContainer.innerHTML = '';

            try {
                const formData = new FormData(uploadForm);
                const response = await fetch('/predict', { method: 'POST', body: formData });
                const data = await response.json();

                if (data.error) {
                    alert(`Error: ${data.error}`);
                    return;
                }
                
                predictionContext = data;
                resultsSection.classList.remove('hidden');
                
                predictionOutput.innerHTML = `
                    <div class="bg-gradient-to-r from-indigo-50 to-purple-50 p-6 rounded-xl border border-indigo-200">
                        <div class="flex items-center justify-between mb-4">
                            <span class="text-sm font-semibold text-indigo-600 bg-indigo-100 px-3 py-1 rounded-full">${data.model_used}</span>
                            <span class="text-2xl font-bold text-gray-900">${(data.confidence * 100).toFixed(1)}%</span>
                        </div>
                        <h3 class="text-2xl font-bold text-gray-900 mb-3">${data.prediction}</h3>
                        <div class="bg-gray-200 rounded-full h-3 overflow-hidden">
                            <div class="progress-bar h-3 rounded-full" style="width: ${(data.confidence * 100).toFixed(0)}%"></div>
                        </div>
                    </div>
                `;
                
                originalImage.src = `${data.original_image}?t=${new Date().getTime()}`;

                if (data.gradcam_image) {
                    gradcamImage.src = `${data.gradcam_image}?t=${new Date().getTime()}`;
                    gradcamImage.classList.remove('hidden');
                    gradcamPlaceholder.classList.add('hidden');
                } else {
                    gradcamImage.classList.add('hidden');
                    gradcamPlaceholder.classList.remove('hidden');
                }
                
                // Activate chat
                chatCard.classList.remove('opacity-50', 'pointer-events-none');
                chatStatus.textContent = 'Active';
                chatStatus.className = 'bg-green-100 text-green-800 px-2 py-1 rounded-full text-xs';
                
                chatMessages.innerHTML = '';
                addMessage("Analysis complete! Ask me anything about the results.", 'bot');
                chatInput.disabled = false;
                chatSubmit.disabled = false;
                
                if (data.predefined_prompts) {
                    data.predefined_prompts.forEach(prompt => {
                        const btn = document.createElement('button');
                        btn.textContent = prompt;
                        btn.className = 'bg-indigo-100 text-indigo-700 text-sm px-3 py-1 rounded-full hover:bg-indigo-200 transition-all';
                        btn.onclick = () => { 
                            chatInput.value = prompt; 
                            chatForm.requestSubmit(); 
                        };
                        promptsContainer.appendChild(btn);
                    });
                }

            } catch (error) {
                alert('An unexpected error occurred.');
                console.error("Prediction Error:", error);
            } finally {
                submitButton.disabled = false;
                submitButton.innerHTML = originalText;
            }
        });

        chatForm.addEventListener('submit', async (e) => {
            e.preventDefault();
            const message = chatInput.value.trim();
            if (!message || !predictionContext) return;

            addMessage(message, 'user');
            chatHistory.push({ role: 'user', parts: [message] });
            chatInput.value = '';
            promptsContainer.innerHTML = '';

            const thinkingMsg = addMessage('', 'bot');
            thinkingMsg.innerHTML = `
                <div class="flex items-center">
                    <div class="flex space-x-1 mr-2">
                        <div class="typing-dot"></div>
                        <div class="typing-dot"></div>
                        <div class="typing-dot"></div>
                    </div>
                    <span class="text-sm text-gray-500">Thinking...</span>
                </div>
            `;

            try {
                const response = await fetch('/chat', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ message, context: predictionContext, history: chatHistory })
                });
                const data = await response.json();
                
                thinkingMsg.remove();
                if (data.error) {
                    addMessage(`Error: ${data.error}`, 'bot');
                    chatHistory.pop();
                } else {
                    addMessage(data.response, 'bot');
                    chatHistory.push({ role: 'model', parts: [data.response] });
                }
            } catch (error) {
                thinkingMsg.remove();
                addMessage('Connection error. Please try again.', 'bot');
                chatHistory.pop();
                console.error("Chat Error:", error);
            }
        });

        function addMessage(text, type) {
            const msgDiv = document.createElement('div');
            msgDiv.className = `p-3 rounded-xl max-w-[90%] ${type}-message mb-3`;

            if (type === 'user') {
                msgDiv.classList.add('ml-auto', 'text-right');
                msgDiv.textContent = text;
            } else {
                msgDiv.classList.add('mr-auto');
                if (text) {
                    msgDiv.innerHTML = marked.parse(text);
                }
            }

            chatMessages.appendChild(msgDiv);
            chatMessages.scrollTop = chatMessages.scrollHeight;
            return msgDiv;
        }

        // Load example images when model changes
        async function loadExamples() {
            try {
                const res = await fetch('/example_images');
                const data = await res.json();
                cachedExamples = Array.isArray(data.images) ? data.images : [];
                renderExamples();
            } catch (e) {
                console.error('Failed to load examples', e);
                cachedExamples = [];
                renderExamples();
            }
        }

        function renderExamples() {
            examplesContainer.innerHTML = '';
            if (!cachedExamples.length) {
                examplesEmpty.classList.remove('hidden');
                return;
            }
            examplesEmpty.classList.add('hidden');
            // Show up to 9 examples
            cachedExamples.slice(0, 9).forEach((url) => {
                const card = document.createElement('button');
                card.type = 'button';
                card.className = 'relative group rounded-xl overflow-hidden shadow hover:shadow-lg transition focus:outline-none focus:ring-2 focus:ring-indigo-500 text-left';
                card.title = 'Use this example';
                card.onclick = () => selectExample(url);
                const name = decodeURIComponent(url.split('/').pop() || 'example');
                card.innerHTML = `
                    <img src="${url}" alt="${name}" class="w-full h-24 object-cover">
                    <div class="px-2 py-1 text-xs bg-white text-gray-700 truncate">${name}</div>
                `;
                examplesContainer.appendChild(card);
            });
        }

        async function selectExample(url) {
            try {
                const resp = await fetch(url);
                const blob = await resp.blob();
                const inferredName = url.split('/').pop() || 'example.png';
                const file = new File([blob], inferredName, { type: blob.type || 'image/png' });

                // Put into the hidden file input
                const dt = new DataTransfer();
                dt.items.add(file);
                fileUploadHidden.files = dt.files;

                // Reuse existing preview logic
                handleFileSelect(file);
            } catch (e) {
                console.error('Failed to select example', e);
                alert('Unable to load example image.');
            }
        }

        modelSelect.addEventListener('change', loadExamples);
        refreshExamplesBtn.addEventListener('click', loadExamples);

        // Initial load for default selection
        loadExamples();

        // Smooth scrolling
        document.documentElement.style.scrollBehavior = 'smooth';
    </script>
</body>
</html>