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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>Math Solver - Version Gratuite</title>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css" rel="stylesheet">
    <link href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/styles/atom-one-dark.min.css" rel="stylesheet">
    <style>
        :root {
            --primary-color: #4a6fa5;
            --secondary-color: #166088;
            --accent-color: #4fc3f7;
            --background-color: #f8f9fa;
            --text-color: #333;
            --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --code-bg: #2c323c;
            --output-bg: #f1f8f9;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            background-color: var(--background-color);
            color: var(--text-color);
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            text-align: center;
            padding: 20px 0;
            margin-bottom: 30px;
        }
        
        .logo {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        .subtitle {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        
        .content-box {
            background-color: white;
            border-radius: 10px;
            box-shadow: var(--box-shadow);
            padding: 30px;
            margin-bottom: 30px;
            text-align: center;
        }
        
        h1 {
            color: var(--primary-color);
            margin-top: 0;
        }
        
        .feature-list {
            list-style-type: none;
            padding: 0;
            margin: 30px 0;
            text-align: left;
        }
        
        .feature-list li {
            padding: 10px 0;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .feature-list i {
            color: var(--accent-color);
            margin-right: 10px;
            font-size: 1.2rem;
        }
        
        .cta-button {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 12px 25px;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
            margin: 20px 10px;
            border: none;
            cursor: pointer;
        }
        
        .cta-button:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        
        .upgrade-section {
            margin-top: 30px;
            padding: 20px;
            border-top: 1px solid #ddd;
        }
        
        footer {
            text-align: center;
            padding: 20px 0;
            color: #666;
            font-size: 0.9rem;
        }
        
        #solution {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            text-align: left;
            line-height: 1.8;
            font-size: 16px;
        }
        
        .code-section {
            margin: 20px 0;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
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        .code-header {
            background-color: #343a40;
            color: white;
            padding: 8px 15px;
            font-size: 14px;
            font-family: 'Courier New', monospace;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .code-content {
            margin: 0;
            padding: 15px;
            background-color: var(--code-bg);
            color: #e6e6e6;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            line-height: 1.5;
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        .output-section {
            background-color: var(--output-bg);
            padding: 15px;
            border-radius: 0 0 8px 8px;
            border-top: 1px solid #ddd;
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            font-family: 'Courier New', monospace;
            font-size: 14px;
            white-space: pre-wrap;
            overflow-x: auto;
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        .step-section {
            margin: 25px 0;
            padding: 15px;
            background-color: #f9f9f9;
            border-left: 4px solid var(--primary-color);
            border-radius: 0 8px 8px 0;
            overflow-x: auto; /* Pour les formules LaTeX larges */
        }
        
        .latex-display {
            overflow-x: auto;
            padding: 10px 0;
            margin: 15px 0;
            text-align: center;
        }
        
        .thinking-indicator, .executing-indicator, .answering-indicator {
            display: flex;
            align-items: center;
            padding: 10px;
            margin: 10px 0;
            border-radius: 8px;
            font-size: 0.9rem;
        }
        
        .thinking-indicator {
            background-color: #e3f2fd;
            color: #1565c0;
        }
        
        .executing-indicator {
            background-color: #ede7f6;
            color: #5e35b1;
        }
        
        .answering-indicator {
            background-color: #e8f5e9;
            color: #2e7d32;
        }
        
        .indicator-icon {
            margin-right: 10px;
            animation: pulse 1.5s infinite ease-in-out;
        }
        
        @keyframes pulse {
            0% { opacity: 0.6; }
            50% { opacity: 1; }
            100% { opacity: 0.6; }
        }
        
        /* Styles spécifiques à MathJax */
        .MathJax {
            overflow-x: auto !important;
            overflow-y: hidden !important;
            max-width: 100% !important;
        }
        
        .mjx-chtml {
            overflow-x: auto !important;
            overflow-y: hidden !important;
            max-width: 100% !important;
        }
        
        mjx-container {
            overflow-x: auto !important;
            overflow-y: hidden !important;
            max-width: 100% !important;
            min-width: 0 !important;
            padding: 2px 0;
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 15px;
            }
            
            .content-box {
                padding: 20px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <header>
            <div class="logo">Math Solver</div>
            <div class="subtitle">La solution intelligente pour vos problèmes mathématiques</div>
        </header>
        
        <div class="content-box">
            <h1>Version Gratuite</h1>
            <p>Vous utilisez actuellement la version gratuite de Math Solver qui vous permet de résoudre 3 problèmes par jour.</p>
            
            <div class="feature-list">
                <h2>Fonctionnalités disponibles :</h2>
                <ul class="feature-list">
                    <li><i class="fas fa-check-circle"></i> Résolution de problèmes mathématiques basiques</li>
                    <li><i class="fas fa-check-circle"></i> 3 résolutions gratuites par jour</li>
                    <li><i class="fas fa-check-circle"></i> Explication des étapes de résolution</li>
                    <li><i class="fas fa-times-circle"></i> <span style="color: #999;">Mode d'exécution de code avancé (version Pro)</span></li>
                    <li><i class="fas fa-times-circle"></i> <span style="color: #999;">Résolutions illimitées (version Pro)</span></li>
                    <li><i class="fas fa-times-circle"></i> <span style="color: #999;">Support prioritaire (version Pro)</span></li>
                </ul>
            </div>
            
            <div class="upload-section">
                <form id="imageForm" enctype="multipart/form-data">
                    <input type="file" id="imageInput" name="image" accept="image/*" style="display: none;">
                    <button type="button" id="uploadButton" class="cta-button" onclick="document.getElementById('imageInput').click()">
                        <i class="fas fa-upload"></i> Télécharger une image
                    </button>
                </form>
                
                <p id="uploadStatus"></p>
                <div id="imagePreview" style="display: none; margin: 20px auto; max-width: 500px;">
                    <img id="preview" style="width: 100%; border-radius: 8px; box-shadow: var(--box-shadow);">
                </div>
                
                <button id="solveButton" class="cta-button" style="display: none; background-color: var(--secondary-color);">
                    <i class="fas fa-calculator"></i> Résoudre ce problème
                </button>
            </div>
            
            <div id="solutionOutput" style="margin-top: 30px; text-align: left; display: none;">
                <h3>Solution :</h3>
                <div id="loadingIndicator" class="thinking-indicator" style="display: none;">
                    <i class="fas fa-brain indicator-icon"></i>
                    <span>Je réfléchis au problème...</span>
                </div>
                <div id="solution" style="background: #fff; padding: 20px; border-radius: 8px;"></div>
            </div>
            
            <div class="upgrade-section">
                <h2>Besoin de plus de puissance ?</h2>
                <p>Passez à la version Pro pour des fonctionnalités avancées et des résolutions illimitées.</p>
                <a href="#" class="cta-button">Passer à la version Pro</a>
            </div>
        </div>
        
        <footer>
            <p>&copy; 2025 Math Solver. Tous droits réservés.</p>
        </footer>
    </div>
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/languages/python.min.js"></script>
    
    <!-- MathJax Configuration -->
    <script>
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                inlineMath: [['$', '$'], ['\\(', '\\)']],
                displayMath: [['$$', '$$'], ['\\[', '\\]']],
                processEscapes: true,
                processEnvironments: true,
                packages: {'[+]': ['ams', 'noerrors', 'physics', 'cancel', 'color', 'mhchem', 'mathtools']}
            },
            options: {
                enableMenu: false,
                renderActions: {
                    addMenu: [], // Disable menu
                    checkLoading: []
                },
                ignoreHtmlClass: 'code-content',
                processHtmlClass: 'step-section|latex-display',
                skipHtmlTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']
            },
            startup: {
                pageReady: function() {
                    return MathJax.startup.defaultPageReady();
                }
            },
            loader: {
                load: ['[tex]/ams', '[tex]/noerrors', '[tex]/physics', '[tex]/cancel', '[tex]/color', '[tex]/mhchem', '[tex]/mathtools']
            },
            svg: {
                fontCache: 'global'
            }
        };
    </script>
    <script id="MathJax-script" async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-svg.js"></script>
    
    <script>
        // Variables to manage MathJax rendering state
        let mathJaxQueue = [];
        let isProcessingMathQueue = false;
        
        // Process MathJax queue with delay to avoid blocking UI
        async function processMathJaxQueue() {
            if (isProcessingMathQueue || mathJaxQueue.length === 0) return;
            
            isProcessingMathQueue = true;
            const element = mathJaxQueue.shift();
            
            try {
                await MathJax.typesetPromise([element]);
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                console.error('MathJax typesetting failed:', e);
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            isProcessingMathQueue = false;
            setTimeout(processMathJaxQueue, 100); // Small delay to allow UI updates
        }
        
        function addToMathJaxQueue(element) {
            mathJaxQueue.push(element);
            processMathJaxQueue();
        }
        
        document.getElementById('imageInput').addEventListener('change', function(event) {
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            if (file) {
                const reader = new FileReader();
                reader.onload = function(e) {
                    document.getElementById('preview').src = e.target.result;
                    document.getElementById('imagePreview').style.display = 'block';
                    document.getElementById('solveButton').style.display = 'inline-block';
                    document.getElementById('uploadStatus').textContent = `Image sélectionnée : ${file.name}`;
                }
                reader.readAsDataURL(file);
            }
        });
        
        document.getElementById('solveButton').addEventListener('click', function() {
            const formData = new FormData(document.getElementById('imageForm'));
            const solutionOutput = document.getElementById('solutionOutput');
            const loadingIndicator = document.getElementById('loadingIndicator');
            const solution = document.getElementById('solution');
            
            solutionOutput.style.display = 'block';
            loadingIndicator.style.display = 'flex';
            solution.innerHTML = '';
            
            // Reset MathJax queue
            mathJaxQueue = [];
            isProcessingMathQueue = false;
            
            fetch('/solved', {
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                body: formData
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                function processStream({ done, value }) {
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                        // Final MathJax render at the end
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                        } catch (e) {
                            console.error('Error in final MathJax rendering:', e);
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                    buffer += decoder.decode(value, { stream: true });
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                    buffer = lines.pop(); // Keep the incomplete chunk for next time
                    
                    for (const line of lines) {
                        if (line.startsWith('data: ')) {
                            try {
                                const data = JSON.parse(line.substr(6));
                                
                                if (data.mode === 'thinking') {
                                    loadingIndicator.className = 'thinking-indicator';
                                    loadingIndicator.innerHTML = '<i class="fas fa-brain indicator-icon"></i><span>Je réfléchis au problème...</span>';
                                } else if (data.mode === 'answering') {
                                    loadingIndicator.className = 'answering-indicator';
                                    loadingIndicator.innerHTML = '<i class="fas fa-pencil-alt indicator-icon"></i><span>Rédaction de la solution...</span>';
                                } else if (data.mode === 'executing_code') {
                                    loadingIndicator.className = 'executing-indicator';
                                    loadingIndicator.innerHTML = '<i class="fas fa-code indicator-icon"></i><span>Exécution de code pour la résolution...</span>';
                                } else if (data.mode === 'code_result') {
                                    loadingIndicator.className = 'executing-indicator';
                                    loadingIndicator.innerHTML = '<i class="fas fa-terminal indicator-icon"></i><span>Traitement des résultats...</span>';
                                }
                                
                                if (data.content) {
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                                    // Detect if this is code or output and format appropriately
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                                                <div class="code-header">
                                                    <span>Code Python</span>
                                                </div>
                                                <pre class="code-content"><code class="language-python">${p1}</code></pre>
                                            </div>`;
                                        });
                                        contentContainer.innerHTML = codeHtml;
                                        solution.appendChild(contentContainer);
                                        
                                        // Apply syntax highlighting
                                        contentContainer.querySelectorAll('pre code').forEach((block) => {
                                            hljs.highlightElement(block);
                                        });
                                    } 
                                    else if (content.includes('Résultat d\'exécution:')) {
                                        // This is code output
                                        const outputHtml = content.replace(/Résultat d'exécution:\n```\n([\s\S]*?)\n```/g, function(match, p1) {
                                            return `<div class="output-section">${p1}</div>`;
                                        });
                                        contentContainer.innerHTML = outputHtml;
                                        solution.appendChild(contentContainer);
                                    } 
                                    else {
                                        // Regular text, might contain LaTeX
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                                        // Add to MathJax rendering queue
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                    // Scroll to bottom automatically
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                solution.appendChild(errorDiv);
                loadingIndicator.style.display = 'none';
            });
        });
    </script>
</body>
</html>