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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>Model Trainer | Hugging Face Space</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>
        .file-upload:hover {
            background-color: #f0f0f0;
            border-color: #d1d5db;
        }
        .progress-bar {
            transition: width 0.3s ease-in-out;
        }
        .model-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }
        .animate-pulse {
            animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }
    </style>
</head>
<body class="bg-gray-50 min-h-screen">
    <div class="container mx-auto px-4 py-8 max-w-6xl">
        <!-- Header -->
        <header class="flex items-center justify-between mb-8">
            <div class="flex items-center space-x-3">
                <div class="bg-purple-600 p-2 rounded-lg">
                    <i class="fas fa-robot text-white text-2xl"></i>
                </div>
                <h1 class="text-2xl font-bold text-gray-800">Model Trainer</h1>
            </div>
            <div class="flex items-center space-x-4">
                <button class="px-4 py-2 bg-gray-200 hover:bg-gray-300 rounded-lg text-gray-700 font-medium transition">
                    <i class="fas fa-question-circle mr-2"></i>Help
                </button>
                <button class="px-4 py-2 bg-purple-600 hover:bg-purple-700 rounded-lg text-white font-medium transition">
                    <i class="fas fa-user mr-2"></i>Sign In
                </button>
            </div>
        </header>

        <!-- Main Content -->
        <main class="bg-white rounded-xl shadow-md overflow-hidden">
            <!-- Model Selection Section -->
            <section class="p-6 border-b border-gray-200">
                <h2 class="text-xl font-semibold text-gray-800 mb-4">Select Model</h2>
                <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
                    <!-- Model Cards -->
                    <div class="model-card bg-gray-50 p-4 rounded-lg border border-gray-200 cursor-pointer transition hover:border-purple-400" onclick="selectModel('gpt-3.5-turbo')">
                        <div class="flex items-center mb-3">
                            <div class="bg-blue-100 p-2 rounded-full mr-3">
                                <i class="fas fa-brain text-blue-600"></i>
                            </div>
                            <h3 class="font-medium text-gray-800">GPT-3.5 Turbo</h3>
                        </div>
                        <p class="text-sm text-gray-600 mb-3">Most capable GPT-3.5 model optimized for chat at 1/10th the cost of text-davinci-003.</p>
                        <div class="flex justify-between text-xs text-gray-500">
                            <span><i class="fas fa-memory mr-1"></i> 175B params</span>
                            <span><i class="fas fa-calendar mr-1"></i> Jun 2021</span>
                        </div>
                    </div>

                    <div class="model-card bg-gray-50 p-4 rounded-lg border border-gray-200 cursor-pointer transition hover:border-purple-400" onclick="selectModel('llama-2-7b')">
                        <div class="flex items-center mb-3">
                            <div class="bg-green-100 p-2 rounded-full mr-3">
                                <i class="fas fa-hippo text-green-600"></i>
                            </div>
                            <h3 class="font-medium text-gray-800">LLaMA 2 7B</h3>
                        </div>
                        <p class="text-sm text-gray-600 mb-3">Open source model from Meta with 7 billion parameters, fine-tuned for chat.</p>
                        <div class="flex justify-between text-xs text-gray-500">
                            <span><i class="fas fa-memory mr-1"></i> 7B params</span>
                            <span><i class="fas fa-calendar mr-1"></i> Jul 2023</span>
                        </div>
                    </div>

                    <div class="model-card bg-gray-50 p-4 rounded-lg border border-gray-200 cursor-pointer transition hover:border-purple-400" onclick="selectModel('mistral-7b')">
                        <div class="flex items-center mb-3">
                            <div class="bg-orange-100 p-2 rounded-full mr-3">
                                <i class="fas fa-wind text-orange-600"></i>
                            </div>
                            <h3 class="font-medium text-gray-800">Mistral 7B</h3>
                        </div>
                        <p class="text-sm text-gray-600 mb-3">Most capable 7B model to date, outperforming larger models on many benchmarks.</p>
                        <div class="flex justify-between text-xs text-gray-500">
                            <span><i class="fas fa-memory mr-1"></i> 7B params</span>
                            <span><i class="fas fa-calendar mr-1"></i> Sep 2023</span>
                        </div>
                    </div>
                </div>

                <!-- Dropdown for additional models -->
                <div class="mt-4">
                    <label for="model-select" class="block text-sm font-medium text-gray-700 mb-1">Or select another model:</label>
                    <select id="model-select" class="w-full p-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500">
                        <option value="">-- Select a model --</option>
                        <option value="gpt-4">GPT-4</option>
                        <option value="claude-2">Claude 2</option>
                        <option value="palm-2">PaLM 2</option>
                        <option value="falcon-40b">Falcon 40B</option>
                        <option value="bloom-176b">BLOOM 176B</option>
                    </select>
                </div>
            </section>

            <!-- File Upload Section -->
            <section class="p-6 border-b border-gray-200">
                <h2 class="text-xl font-semibold text-gray-800 mb-4">Upload Training Data</h2>
                <div class="file-upload border-2 border-dashed border-gray-300 rounded-lg p-8 text-center cursor-pointer transition" id="drop-area">
                    <div class="flex flex-col items-center justify-center">
                        <i class="fas fa-cloud-upload-alt text-4xl text-gray-400 mb-3"></i>
                        <p class="text-gray-600 mb-1">Drag & drop files here or click to browse</p>
                        <p class="text-sm text-gray-500">Supported formats: PDF, TXT, DOCX, PPT, CSV (Max 10 files, 100MB total)</p>
                        <input type="file" id="file-input" class="hidden" multiple accept=".pdf,.txt,.docx,.ppt,.pptx,.csv,.xlsx">
                        <button id="browse-btn" class="mt-4 px-4 py-2 bg-purple-600 hover:bg-purple-700 rounded-lg text-white font-medium transition">
                            <i class="fas fa-folder-open mr-2"></i>Browse Files
                        </button>
                    </div>
                </div>

                <!-- Uploaded Files Preview -->
                <div id="file-preview" class="mt-6 hidden">
                    <h3 class="font-medium text-gray-700 mb-3">Selected Files:</h3>
                    <div id="file-list" class="space-y-2"></div>
                </div>
            </section>

            <!-- System Prompt Section -->
            <section class="p-6 border-b border-gray-200">
                <h2 class="text-xl font-semibold text-gray-800 mb-4">System Prompt</h2>
                <div class="mb-4">
                    <label for="system-prompt" class="block text-sm font-medium text-gray-700 mb-1">Customize the model's behavior:</label>
                    <textarea id="system-prompt" rows="4" class="w-full p-3 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500" placeholder="Example: You are a helpful assistant specialized in legal documents. Provide detailed answers with references to the uploaded materials."></textarea>
                </div>
                <div class="flex flex-wrap gap-2">
                    <button onclick="insertPrompt('legal')" class="px-3 py-1 bg-gray-100 hover:bg-gray-200 rounded-full text-sm text-gray-700 transition">
                        <i class="fas fa-gavel mr-1"></i>Legal
                    </button>
                    <button onclick="insertPrompt('technical')" class="px-3 py-1 bg-gray-100 hover:bg-gray-200 rounded-full text-sm text-gray-700 transition">
                        <i class="fas fa-code mr-1"></i>Technical
                    </button>
                    <button onclick="insertPrompt('creative')" class="px-3 py-1 bg-gray-100 hover:bg-gray-200 rounded-full text-sm text-gray-700 transition">
                        <i class="fas fa-paint-brush mr-1"></i>Creative
                    </button>
                    <button onclick="insertPrompt('medical')" class="px-3 py-1 bg-gray-100 hover:bg-gray-200 rounded-full text-sm text-gray-700 transition">
                        <i class="fas fa-heartbeat mr-1"></i>Medical
                    </button>
                    <button onclick="insertPrompt('neutral')" class="px-3 py-1 bg-gray-100 hover:bg-gray-200 rounded-full text-sm text-gray-700 transition">
                        <i class="fas fa-balance-scale mr-1"></i>Neutral
                    </button>
                </div>
            </section>

            <!-- Training Options Section -->
            <section class="p-6">
                <h2 class="text-xl font-semibold text-gray-800 mb-4">Training Options</h2>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Training Method:</label>
                        <select class="w-full p-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500">
                            <option>Fine-tuning</option>
                            <option>LoRA (Low-Rank Adaptation)</option>
                            <option>Prompt Tuning</option>
                            <option>Prefix Tuning</option>
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Epochs:</label>
                        <input type="number" min="1" max="10" value="3" class="w-full p-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Learning Rate:</label>
                        <input type="number" step="0.0001" min="0.0001" max="0.01" value="0.001" class="w-full p-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Batch Size:</label>
                        <select class="w-full p-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500">
                            <option>8</option>
                            <option selected>16</option>
                            <option>32</option>
                            <option>64</option>
                        </select>
                    </div>
                </div>

                <!-- Start Training Button -->
                <div class="mt-8">
                    <button id="train-btn" class="w-full py-3 bg-green-600 hover:bg-green-700 rounded-lg text-white font-bold text-lg transition flex items-center justify-center">
                        <i class="fas fa-play-circle mr-3"></i>Start Training
                    </button>
                </div>

                <!-- Training Progress -->
                <div id="training-progress" class="mt-6 hidden">
                    <div class="flex justify-between mb-1">
                        <span class="text-sm font-medium text-gray-700">Training Progress</span>
                        <span id="progress-percent" class="text-sm font-medium text-gray-700">0%</span>
                    </div>
                    <div class="w-full bg-gray-200 rounded-full h-2.5">
                        <div id="progress-bar" class="progress-bar bg-green-600 h-2.5 rounded-full" style="width: 0%"></div>
                    </div>
                    <div id="training-status" class="mt-2 text-sm text-gray-600">Preparing to train...</div>
                    
                    <div id="training-details" class="mt-4 hidden">
                        <div class="grid grid-cols-2 gap-4">
                            <div class="bg-gray-50 p-3 rounded-lg">
                                <div class="text-xs text-gray-500 mb-1">Current Epoch</div>
                                <div id="current-epoch" class="font-medium">1/3</div>
                            </div>
                            <div class="bg-gray-50 p-3 rounded-lg">
                                <div class="text-xs text-gray-500 mb-1">Loss</div>
                                <div id="current-loss" class="font-medium">0.00</div>
                            </div>
                        </div>
                    </div>
                </div>
            </section>
        </main>

        <!-- Footer -->
        <footer class="mt-8 text-center text-gray-500 text-sm">
            <p>© 2023 Model Trainer. Not affiliated with Hugging Face.</p>
            <p class="mt-1">This is a demo interface. Actual training would require backend integration.</p>
        </footer>
    </div>

    <script>
        // Selected model tracking
        let selectedModel = null;
        
        // DOM elements
        const dropArea = document.getElementById('drop-area');
        const fileInput = document.getElementById('file-input');
        const browseBtn = document.getElementById('browse-btn');
        const filePreview = document.getElementById('file-preview');
        const fileList = document.getElementById('file-list');
        const trainBtn = document.getElementById('train-btn');
        const trainingProgress = document.getElementById('training-progress');
        const progressBar = document.getElementById('progress-bar');
        const progressPercent = document.getElementById('progress-percent');
        const trainingStatus = document.getElementById('training-status');
        const trainingDetails = document.getElementById('training-details');
        const systemPrompt = document.getElementById('system-prompt');

        // Model selection
        function selectModel(model) {
            selectedModel = model;
            // Update UI to show selected model
            document.querySelectorAll('.model-card').forEach(card => {
                card.classList.remove('border-purple-500', 'ring-2', 'ring-purple-200');
            });
            
            const selectedCard = document.querySelector(`.model-card[onclick="selectModel('${model}')"]`);
            if (selectedCard) {
                selectedCard.classList.add('border-purple-500', 'ring-2', 'ring-purple-200');
            }
            
            // Also update dropdown if needed
            document.getElementById('model-select').value = model;
            
            console.log(`Selected model: ${model}`);
        }

        // File upload handling
        browseBtn.addEventListener('click', () => fileInput.click());

        fileInput.addEventListener('change', handleFiles);

        ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
            dropArea.addEventListener(eventName, preventDefaults, false);
        });

        function preventDefaults(e) {
            e.preventDefault();
            e.stopPropagation();
        }

        ['dragenter', 'dragover'].forEach(eventName => {
            dropArea.addEventListener(eventName, highlight, false);
        });

        ['dragleave', 'drop'].forEach(eventName => {
            dropArea.addEventListener(eventName, unhighlight, false);
        });

        function highlight() {
            dropArea.classList.add('border-purple-500', 'bg-purple-50');
        }

        function unhighlight() {
            dropArea.classList.remove('border-purple-500', 'bg-purple-50');
        }

        dropArea.addEventListener('drop', handleDrop, false);

        function handleDrop(e) {
            const dt = e.dataTransfer;
            const files = dt.files;
            handleFiles({ target: { files } });
        }

        function handleFiles(e) {
            const files = e.target.files;
            if (files.length === 0) return;
            
            fileList.innerHTML = '';
            
            for (let i = 0; i < files.length; i++) {
                const file = files[i];
                if (file.size > 100 * 1024 * 1024) { // 100MB limit
                    alert(`File ${file.name} is too large (max 100MB)`);
                    continue;
                }
                
                const fileItem = document.createElement('div');
                fileItem.className = 'flex items-center justify-between p-3 bg-gray-50 rounded-lg';
                fileItem.innerHTML = `
                    <div class="flex items-center">
                        <div class="mr-3 text-purple-600">
                            ${getFileIcon(file)}
                        </div>
                        <div>
                            <div class="text-sm font-medium text-gray-800">${file.name}</div>
                            <div class="text-xs text-gray-500">${formatFileSize(file.size)}</div>
                        </div>
                    </div>
                    <button onclick="removeFile(this)" class="text-gray-400 hover:text-red-500">
                        <i class="fas fa-times"></i>
                    </button>
                `;
                fileList.appendChild(fileItem);
            }
            
            filePreview.classList.remove('hidden');
        }

        function getFileIcon(file) {
            const extension = file.name.split('.').pop().toLowerCase();
            const icons = {
                pdf: 'file-pdf',
                txt: 'file-alt',
                docx: 'file-word',
                ppt: 'file-powerpoint',
                pptx: 'file-powerpoint',
                csv: 'file-csv',
                xlsx: 'file-excel'
            };
            
            const icon = icons[extension] || 'file';
            return `<i class="fas fa-${icon}"></i>`;
        }

        function formatFileSize(bytes) {
            if (bytes === 0) return '0 Bytes';
            const k = 1024;
            const sizes = ['Bytes', 'KB', 'MB', 'GB'];
            const i = Math.floor(Math.log(bytes) / Math.log(k));
            return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
        }

        function removeFile(button) {
            const fileItem = button.closest('div');
            fileItem.remove();
            
            if (fileList.children.length === 0) {
                filePreview.classList.add('hidden');
            }
        }

        // System prompt templates
        function insertPrompt(type) {
            const prompts = {
                legal: 'You are a legal expert assistant. Analyze legal documents precisely and provide accurate interpretations based on the relevant laws and precedents. Always cite your sources when possible.',
                technical: 'You are a technical expert assistant. Explain complex technical concepts clearly and provide accurate, detailed answers. When discussing code, use proper formatting and include examples when helpful.',
                creative: 'You are a creative writing assistant. Help brainstorm ideas, develop stories, and refine writing with a focus on creativity and originality. Provide suggestions that enhance the narrative and style.',
                medical: 'You are a medical information assistant. Provide accurate health information based on current medical knowledge. Always clarify that you are not a substitute for professional medical advice.',
                neutral: 'You are a helpful, harmless, and honest assistant. Provide balanced, factual information without bias. If you don\'t know something, say so rather than speculate.'
            };
            
            systemPrompt.value = prompts[type] || '';
        }

        // Training simulation
        trainBtn.addEventListener('click', startTraining);

        function startTraining() {
            if (!selectedModel) {
                alert('Please select a model first');
                return;
            }
            
            if (fileList.children.length === 0) {
                alert('Please upload at least one file');
                return;
            }
            
            if (!systemPrompt.value.trim()) {
                alert('Please provide a system prompt');
                return;
            }
            
            // Disable the button and show progress
            trainBtn.disabled = true;
            trainBtn.innerHTML = '<i class="fas fa-cog fa-spin mr-3"></i>Training in progress...';
            trainBtn.classList.remove('bg-green-600', 'hover:bg-green-700');
            trainBtn.classList.add('bg-gray-500');
            
            trainingProgress.classList.remove('hidden');
            trainingDetails.classList.remove('hidden');
            
            // Simulate training progress
            let progress = 0;
            let epochs = 3;
            let currentEpoch = 1;
            
            const interval = setInterval(() => {
                progress += Math.random() * 5;
                if (progress > 100) progress = 100;
                
                progressBar.style.width = `${progress}%`;
                progressPercent.textContent = `${Math.round(progress)}%`;
                
                // Update status messages
                if (progress < 30) {
                    trainingStatus.textContent = 'Processing training data...';
                } else if (progress < 60) {
                    trainingStatus.textContent = 'Training model parameters...';
                } else if (progress < 90) {
                    trainingStatus.textContent = 'Optimizing model performance...';
                } else {
                    trainingStatus.textContent = 'Finalizing training...';
                }
                
                // Update epoch and loss
                if (progress >= 33 && currentEpoch === 1) {
                    currentEpoch = 2;
                    document.getElementById('current-epoch').textContent = '2/3';
                    document.getElementById('current-loss').textContent = (0.5 + Math.random() * 0.3).toFixed(2);
                } else if (progress >= 66 && currentEpoch === 2) {
                    currentEpoch = 3;
                    document.getElementById('current-epoch').textContent = '3/3';
                    document.getElementById('current-loss').textContent = (0.2 + Math.random() * 0.2).toFixed(2);
                }
                
                // When complete
                if (progress === 100) {
                    clearInterval(interval);
                    trainingStatus.textContent = 'Training complete! Model is ready for use.';
                    trainBtn.innerHTML = '<i class="fas fa-check-circle mr-3"></i>Training Complete';
                    
                    // Show success message and model card
                    setTimeout(() => {
                        const successAlert = document.createElement('div');
                        successAlert.className = 'mt-4 p-4 bg-green-100 border border-green-400 text-green-700 rounded-lg';
                        successAlert.innerHTML = `
                            <div class="flex items-center">
                                <i class="fas fa-check-circle mr-2 text-green-600"></i>
                                <strong>Success!</strong> Model "${selectedModel}" has been successfully trained on your data.
                            </div>
                            <div class="mt-2 text-sm">
                                You can now use this model with your custom system prompt.
                            </div>
                        `;
                        trainingProgress.appendChild(successAlert);

                        // Create model card
                        const modelCard = document.createElement('div');
                        modelCard.className = 'mt-6 bg-white p-6 rounded-lg shadow border border-gray-200';
                        modelCard.innerHTML = `
                            <h3 class="text-lg font-bold mb-4">Model Card</h3>
                            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                                <div>
                                    <h4 class="font-semibold mb-2">Model Details</h4>
                                    <ul class="space-y-2 text-sm">
                                        <li><strong>Base Model:</strong> ${selectedModel}</li>
                                        <li><strong>Training Method:</strong> Fine-tuning</li>
                                        <li><strong>Epochs:</strong> 3</li>
                                        <li><strong>Learning Rate:</strong> 0.001</li>
                                        <li><strong>Final Loss:</strong> ${(0.1 + Math.random() * 0.1).toFixed(4)}</li>
                                    </ul>
                                </div>
                                <div>
                                    <h4 class="font-semibold mb-2">Training Data</h4>
                                    <ul class="space-y-2 text-sm">
                                        ${Array.from(fileList.children).map(item => 
                                            `<li>${item.querySelector('.text-gray-800').textContent}</li>`
                                        ).join('')}
                                    </ul>
                                </div>
                                <div class="md:col-span-2">
                                    <h4 class="font-semibold mb-2">System Prompt</h4>
                                    <div class="bg-gray-50 p-3 rounded text-sm">
                                        ${systemPrompt.value}
                                    </div>
                                </div>
                                <div class="md:col-span-2">
                                    <h4 class="font-semibold mb-2">Intended Use & Limitations</h4>
                                    <div class="text-sm space-y-2">
                                        <p>This model is specialized for: ${systemPrompt.value.substring(0, 50)}...</p>
                                        <p><strong>Limitations:</strong> Performance may vary based on training data quality. Not suitable for high-risk applications.</p>
                                    </div>
                                </div>
                            </div>
                            <div class="mt-6 flex justify-end">
                                <button onclick="saveModelToProfile()" class="px-4 py-2 bg-purple-600 hover:bg-purple-700 rounded-lg text-white font-medium transition">
                                    <i class="fas fa-save mr-2"></i>Save to Profile
                                </button>
                            </div>
                        `;
                        trainingProgress.appendChild(modelCard);
                    }, 500);
                }
            }, 300);
        }

        // Save model to profile
        function saveModelToProfile() {
            alert(`Model "${selectedModel}" has been saved to your profile with its model card.`);
            // In a real implementation, this would make an API call to save the model
        }

        // Initialize model select dropdown
        document.getElementById('model-select').addEventListener('change', function() {
            if (this.value) {
                selectModel(this.value);
            }
        });
    </script>
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