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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: 0; /* Remove padding from the container */
            border-radius: 8px;
            text-align: left;
            line-height: 1.8;
            font-size: 16px;
            overflow: hidden; /* Clip child border-radius */
            box-shadow: var(--box-shadow); /* Add shadow to the main container */
        }

        .step-section, .code-section, .output-section {
            margin: 0; /* Remove vertical margins between blocks */
            padding: 15px 20px; /* Add padding inside each block, matching original #solution padding */
            border-radius: 0; /* Remove rounded corners between blocks */
            border-left: none; /* Remove default left border */
            overflow-x: auto;
            white-space: pre-wrap; /* Preserve white space and line breaks */
            background-color: transparent; /* Ensure consistent background */
        }

        .step-section {
            border-left: 4px solid var(--primary-color); /* Keep the left border as a visual cue */
            padding-left: calc(20px - 4px); /* Adjust padding to maintain alignment */
            background-color: #f9f9f9; /* Subtle background for text steps */
        }

        .code-section {
            /* Code section internal elements handle their own padding and background */
        }

        .code-header {
            background-color: #343a40;
            color: white;
            padding: 8px 20px; /* Match horizontal padding */
            font-size: 14px;
            font-family: 'Courier New', monospace;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top-left-radius: 8px;
            border-top-right-radius: 8px;
        }

        .code-content {
            margin: 0;
            padding: 15px 20px; /* Match horizontal padding */
            background-color: var(--code-bg);
            color: #e6e6e6;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            line-height: 1.5;
        }

        .output-section {
            background-color: var(--output-bg);
            padding: 15px 20px; /* Match horizontal padding */
            border-top: 1px solid #ddd;
            color: #333;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            white-space: pre-wrap;
            overflow-x: auto;
            border-bottom-left-radius: 8px;
            border-bottom-right-radius: 8px;
        }

        /* Apply border-radius to the very first and very last child inside #solution */
        #solution > div:first-child {
            border-top-left-radius: 8px;
            border-top-right-radius: 8px;
        }

         #solution > div:last-child {
            border-bottom-left-radius: 8px;
            border-bottom-right-radius: 8px;
        }

        /* Special case for first code header within the first child */
        #solution > .code-section:first-child .code-header {
             border-top-left-radius: 8px;
             border-top-right-radius: 8px;
        }

        /* Special case for last code content if it's the very last child and not followed by output */
         #solution > .code-section:last-child .code-content:last-child:not(+.output-section) {
             border-bottom-left-radius: 8px;
             border-bottom-right-radius: 8px;
         }

         /* MathJax rendering output styles */
        mjx-container {
            overflow-x: auto;
            overflow-y: hidden;
            display: block; /* Block math */
            margin: 1em 0; /* Vertical spacing for block math */
            text-align: initial;
            padding: 0 !important;
        }
         /* Inline math container */
        mjx-container[display="inline"] {
            display: inline-block; /* Inline math behaves like text */
            margin: 0 !important; /* No vertical margin for inline math */
        }

        mjx-assistive-mml {
             display: none !important;
        }

        .MathJax nobr,.MathJax .mjx-chtml{
            display: inline-block !important;
            white-space: normal !important;
        }
        .step-section span.MathJax_Preview {
            display: none !important;
        }

    </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"></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>© 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>

    <script>
        window.MathJax = {
            tex: {
                inlineMath: [['$', '$'], ['\\(', '\\)']],
                displayMath: [['$$', '$$'], ['\\[', '\\]']],
                processEscapes: true,
                processEnvironments: true,
                packages: {'[+]': ['ams', 'noerrors', 'physics', 'cancel', 'color', 'mhchem', 'mathtools']}
            },
            options: {
                enableMenu: false,
                ignoreHtmlClass: 'code-content',
                processHtmlClass: 'step-section', /* Process step-section for Math */
                skipHtmlTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']
            },
            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>
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            const file = event.target.files[0];
            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);
            }
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        document.getElementById('solveButton').addEventListener('click', function() {
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            solutionOutput.style.display = 'block';
            loadingIndicator.style.display = 'flex';
            solution.innerHTML = '';

            fetch('/solved', {
                method: 'POST',
                body: formData
            })
            .then(response => {
                const reader = response.body.getReader();
                const decoder = new TextDecoder();
                let buffer = '';

                function processStream({ done, value }) {
                    if (done) {
                        loadingIndicator.style.display = 'none';
                        return;
                    }

                    buffer += decoder.decode(value, { stream: true });
                    const lines = buffer.split('\n\n');
                    buffer = lines.pop();

                    for (const line of lines) {
                        if (line.startsWith('data: ')) {
                            try {
                                const data = JSON.parse(line.substr(6));

                                if (data.mode) {
                                    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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                                    const contentContainer = document.createElement('div');

                                    if (content.includes('```python')) {
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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>`;
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                                        contentContainer.innerHTML = codeHtml;
                                        solution.appendChild(contentContainer);
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