Update templates/index.html

templates/index.html

@@ -14,7 +14,7 @@
             --background-color: #f8f9fa;
             --text-color: #333;
             --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
-            --code-bg: #2c323c; /* Background for code blocks generated by marked+hljs */
+            --code-bg: #2c323c;
             --output-bg: #f1f8f9;
         }
 
@@ -72,101 +72,183 @@
             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); }
+        .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;
+        }
 
-        .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; }
+        .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;
+        }
 
-        /* --- Styles for Solution Area --- */
-        #solutionOutput {
+        .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;
-            text-align: left;
-            display: none;
+            padding: 20px;
+            border-top: 1px solid #ddd;
+        }
+
+        footer {
+            text-align: center;
+            padding: 20px 0;
+            color: #666;
+            font-size: 0.9rem;
         }
 
-        #solutionContainer {
+        #solution {
             background: #fff;
             padding: 20px;
             border-radius: 8px;
             text-align: left;
             line-height: 1.8;
             font-size: 16px;
-            box-shadow: var(--box-shadow);
-            overflow-x: hidden; /* Prevent container scroll, let content scroll if needed */
-            max-height: 70vh; /* Limit height and enable scrolling */
-            overflow-y: auto; /* Enable vertical scroll */
-            scroll-behavior: smooth;
+            /* Allow child divs to handle their own background */
+             background-color: transparent;
+             padding: 0; /* Remove padding if children manage it */
         }
 
-         /* Styles for elements generated by Marked.js */
-        #solutionContainer p { margin-bottom: 1em; }
-        #solutionContainer ul, #solutionContainer ol { margin-left: 2em; margin-bottom: 1em; }
-        #solutionContainer li { margin-bottom: 0.5em; }
-        #solutionContainer h1, #solutionContainer h2, #solutionContainer h3 { margin-top: 1.5em; margin-bottom: 0.8em; font-weight: bold; color: var(--primary-color); }
-        #solutionContainer h1 { font-size: 1.8em; }
-        #solutionContainer h2 { font-size: 1.5em; }
-        #solutionContainer h3 { font-size: 1.2em; }
-        #solutionContainer strong, #solutionContainer b { font-weight: bold; }
-        #solutionContainer em, #solutionContainer i { font-style: italic; }
-        #solutionContainer table { border-collapse: collapse; width: 100%; margin-bottom: 1rem; }
-        #solutionContainer th, #solutionContainer td { border: 1px solid #d1d5db; padding: 0.5rem; text-align: left; }
-        #solutionContainer th { background-color: #f3f4f6; font-weight: 600; }
-        #solutionContainer blockquote { border-left: 4px solid #ccc; margin-left: 0; padding-left: 1em; color: #666; }
-
-        /* Styles for Code Blocks (generated by Marked + Highlight.js) */
-        #solutionContainer pre {
-            margin: 1.5em 0;
-            border-radius: 8px;
-            overflow: hidden; /* Contains the code block */
-            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
+        .step-section, .code-section, .output-section {
+            margin: 0;
+            padding: 15px;
+            border-radius: 0;
+            border-left: none;
+            overflow-x: auto;
+            white-space: pre-wrap; /* Important for text formatting */
+             /* Common background or let specifics override */
+            background-color: #f9f9f9;
         }
-        #solutionContainer pre code.hljs {
-            display: block;
+
+        .step-section {
+             border-left: 4px solid var(--primary-color);
+             padding-left: calc(15px - 4px);
+             background-color: #f9f9f9; /* Specific background for steps */
+        }
+
+
+        .code-section {
+             /* Code section manages its background via children */
+             background-color: transparent;
+             padding: 0; /* No padding on the container itself */
+             border-left: none; /* Override general rule */
+        }
+
+        .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;
+             border-top-left-radius: 0px; /* Managed by first-child rule */
+             border-top-right-radius: 0px;
+         }
+
+        .code-content {
+            margin: 0;
             padding: 15px;
-            background-color: var(--code-bg); /* Use defined code background */
-            color: #e6e6e6; /* Default text color for atom-one-dark */
-            overflow-x: auto; /* Enable horizontal scroll for long code lines */
+            background-color: var(--code-bg);
+            color: #e6e6e6;
+            overflow-x: auto;
             font-family: 'Courier New', monospace;
             font-size: 14px;
             line-height: 1.5;
-            border-radius: 0 0 8px 8px; /* Bottom radius */
+            border-bottom-left-radius: 0px; /* Managed by last-child rule */
+            border-bottom-right-radius: 0px;
+        }
+
+        .output-section {
+            background-color: var(--output-bg);
+            padding: 15px;
+            border-top: 1px solid #ddd;
+            color: #333;
+            font-family: 'Courier New', monospace;
+            font-size: 14px;
+            white-space: pre-wrap;
+            overflow-x: auto;
+            border-left: none; /* Override general rule */
+            border-bottom-left-radius: 0px; /* Managed by last-child rule */
+            border-bottom-right-radius: 0px;
+        }
+
+        /* Add border-radius back to the very first and very last child inside #solution */
+        #solution > div:first-child,
+        #solution > div:first-child .code-header {
+             border-top-left-radius: 8px;
+             border-top-right-radius: 8px;
+        }
+
+        #solution > div:last-child,
+        #solution > div:last-child .code-content, /* If last element is code */
+        #solution > div:last-child.output-section /* If last element is output */
+         {
+             border-bottom-left-radius: 8px;
+             border-bottom-right-radius: 8px;
+        }
+         /* Ensure bottom radius on code content only if it IS the last element */
+         #solution > .code-section:last-child .code-content {
+            border-bottom-left-radius: 8px;
+            border-bottom-right-radius: 8px;
+         }
+         /* If output follows code, remove bottom radius from code content */
+         #solution > .code-section:not(:last-child) .code-content {
+             border-bottom-left-radius: 0;
+             border-bottom-right-radius: 0;
+         }
+
+
+        .latex-display {
+            overflow-x: auto;
+            padding: 10px 0;
+            margin: 15px 0;
+            text-align: center;
         }
-        /* Optional: Add a language header like in the previous code */
-        /* This would require modifying how marked generates the HTML or adding JS */
 
+        .thinking-indicator, .executing-indicator, .answering-indicator {
+            display: flex;
+            align-items: center;
+            padding: 10px;
+            margin: 10px 20px; /* Add margin to separate from content box */
+            border-radius: 8px;
+            font-size: 0.9rem;
+        }
 
-        /* Styles for Loading Indicators */
-        .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; } }
 
-        /* --- MathJax Specific Styles (from previous attempts, seem okay) --- */
-        mjx-container {
-            overflow-x: auto !important; /* Ensure horizontal scroll for wide math */
-            overflow-y: hidden;
-            display: block; /* Block math */
-            margin: 1em 0; /* Vertical spacing for block math */
-            text-align: initial;
-            padding: 2px 0 !important; /* Adjust padding */
-             min-width: 0 !important; /* Prevent excessive width */
-             max-width: 100% !important; /* Ensure it doesn't overflow container */
-        }
-        /* Inline math container */
-        mjx-container[display="inline"] {
-            display: inline-block !important; /* Inline math behaves like text */
-            margin: 0 !important; /* No vertical margin for inline math */
-             overflow-x: visible !important; /* Allow inline math to flow naturally */
-        }
+        mjx-container { overflow-x: auto; overflow-y: hidden; display: block; margin: 1em 0; text-align: initial; padding: 0 !important; }
         mjx-assistive-mml { display: none !important; }
         .MathJax nobr,.MathJax .mjx-chtml{ display: inline-block !important; white-space: normal !important; }
-        span.MathJax_Preview { display: none !important; }
+        .step-section span.MathJax_Preview { display: none !important; }
 
     </style>
 </head>
@@ -181,53 +263,52 @@
             <h1>Version Gratuite</h1>
             <p>Vous utilisez actuellement la version gratuite de Math Solver qui vous permet de résoudre 3 problèmes par jour.</p>
 
-            <!-- Feature list, Upload section remain the same -->
-             <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">
+            <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>
-                <!-- Single container for the entire solution -->
-                <div id="solutionContainer"></div>
+                 <!-- Container for the dynamically added content blocks -->
+                <div id="solution" style="background: #fff; border-radius: 8px; overflow: hidden;">
+                    <!-- Content will be added here by JS -->
+                </div>
             </div>
 
-            <!-- Upgrade section remains the same -->
             <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>
+                <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>
 
@@ -236,12 +317,9 @@
         </footer>
     </div>
 
-    <!-- Dependencies -->
     <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 src="https://cdn.jsdelivr.net/npm/[email protected]/marked.min.js"></script> <!-- Use marked 4.x -->
 
-    <!-- MathJax Configuration and Loading -->
     <script>
         window.MathJax = {
             tex: {
@@ -249,203 +327,168 @@
                 displayMath: [['$$', '$$'], ['\\[', '\\]']],
                 processEscapes: true,
                 processEnvironments: true,
-                packages: {'[+]': ['ams', 'noerrors', 'physics', 'cancel', 'color', 'mhchem', 'mathtools']}
+                packages: {'[+]': ['ams', 'noerrors', 'physics', 'cancel', 'color', 'mhchem', 'mathtools']} // "Full options" packages
             },
             options: {
                 enableMenu: false,
-                ignoreHtmlClass: 'no-mathjax', // Ignore specific classes if needed
-                processHtmlClass: 'mathjax-process', // Process only specific classes if needed
-                skipHtmlTags: ['script', 'noscript', 'style', 'textarea', 'pre'] // Skip pre for manual highlight control
+                ignoreHtmlClass: 'code-content', // Don't process code
+                processHtmlClass: 'step-section|latex-display', // Process text/latex sections
+                skipHtmlTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']
             },
             loader: {
                 load: ['[tex]/ams', '[tex]/noerrors', '[tex]/physics', '[tex]/cancel', '[tex]/color', '[tex]/mhchem', '[tex]/mathtools']
             },
-            startup: {
-                // Function to run once MathJax is ready
-                ready: () => {
-                    console.log('MathJax is ready');
-                    window.mathJaxReady = true; // Flag for our script
-                    MathJax.startup.defaultReady(); // Perform default startup actions
-                }
-            },
             svg: {
-                fontCache: 'global'
+                fontCache: 'global' // Good for performance
             }
         };
     </script>
     <script id="MathJax-script" async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-svg.js"></script>
 
-    <!-- Main Application Logic -->
     <script>
-        document.addEventListener('DOMContentLoaded', () => {
-            // DOM Elements
-            const imageInput = document.getElementById('imageInput');
-            const imagePreview = document.getElementById('imagePreview');
-            const previewImage = document.getElementById('preview');
-            const solveButton = document.getElementById('solveButton');
-            const uploadStatus = document.getElementById('uploadStatus');
-            const solutionOutput = document.getElementById('solutionOutput');
-            const loadingIndicator = document.getElementById('loadingIndicator');
-            const solutionContainer = document.getElementById('solutionContainer');
-            const imageForm = document.getElementById('imageForm');
-
-            // State Variables
-            let solutionBuffer = '';
-            let currentMode = null; // To potentially handle 'thinking' vs 'answering' differently if needed
-            let updateTimeout = null;
-
-            // Configure Marked and Highlight.js
-            marked.setOptions({
-                highlight: function(code, lang) {
-                    const language = hljs.getLanguage(lang) ? lang : 'plaintext';
-                    return hljs.highlight(code, { language }).value;
-                },
-                langPrefix: 'hljs language-', // CSS class prefix for hljs
-                gfm: true, // Enable GitHub Flavored Markdown
-                breaks: true // Convert single line breaks to <br>
-            });
-
-             // Function to update the display (debounced)
-            const updateDisplay = async () => {
-                if (!solutionContainer) return;
-
-                // Parse the entire buffer with Marked
-                solutionContainer.innerHTML = marked.parse(solutionBuffer);
-
-                 // Ensure MathJax is ready before typesetting
-                if (window.mathJaxReady) {
-                    try {
-                         // Tell MathJax to process the updated container
-                        await MathJax.typesetPromise([solutionContainer]);
-                        console.log("MathJax typesetting complete.");
-                    } catch (e) {
-                        console.error('MathJax typesetting failed:', e);
-                    }
-                } else {
-                    console.warn("MathJax not ready, typesetting skipped for this update.");
-                    // Optionally, queue this update or retry later
+        document.getElementById('imageInput').addEventListener('change', function(event) {
+            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);
+            }
+        });
 
-                // Highlight code blocks (already done by marked's highlight option)
-                // hljs.highlightAll(); // Not needed if using marked's highlight option
-
-                // Scroll to bottom
-                solutionContainer.scrollTop = solutionContainer.scrollHeight;
-                updateTimeout = null; // Clear the timeout flag
-            };
-
-            // Schedule display update (debouncing)
-            const scheduleUpdate = () => {
-                if (!updateTimeout) {
-                    updateTimeout = setTimeout(updateDisplay, 150); // Update slightly faster
+        document.getElementById('solveButton').addEventListener('click', function() {
+            const formData = new FormData(document.getElementById('imageForm'));
+            const solutionOutput = document.getElementById('solutionOutput');
+            const loadingIndicator = document.getElementById('loadingIndicator');
+            const solutionContainer = document.getElementById('solution'); // Target the inner container
+
+            solutionOutput.style.display = 'block';
+            loadingIndicator.style.display = 'flex';
+            solutionContainer.innerHTML = ''; // Clear previous solution
+
+            fetch('/solved', { // Ensure this endpoint exists and processes the image
+                method: 'POST',
+                body: formData
+            })
+            .then(response => {
+                if (!response.ok) {
+                    throw new Error(`Erreur serveur: ${response.statusText}`);
                 }
-            };
-
-            // Image selection handler
-            imageInput.addEventListener('change', function(event) {
-                const file = event.target.files[0];
-                if (file) {
-                    const reader = new FileReader();
-                    reader.onload = function(e) {
-                        previewImage.src = e.target.result;
-                        imagePreview.style.display = 'block';
-                        solveButton.style.display = 'inline-block';
-                        uploadStatus.textContent = `Image sélectionnée : ${file.name}`;
+                const reader = response.body.getReader();
+                const decoder = new TextDecoder();
+                let buffer = '';
+
+                function processStream({ done, value }) {
+                    if (done) {
+                        loadingIndicator.style.display = 'none';
+                        return;
                     }
-                    reader.readAsDataURL(file);
-                }
-            });
 
-            // Solve button handler
-            solveButton.addEventListener('click', function() {
-                const formData = new FormData(imageForm);
-
-                solutionOutput.style.display = 'block';
-                loadingIndicator.style.display = 'flex';
-                solutionContainer.innerHTML = ''; // Clear previous solution
-                solutionBuffer = ''; // Reset buffer
-                currentMode = null; // Reset mode
-
-                fetch('/solved', { // Ensure this endpoint matches your backend
-                    method: 'POST',
-                    body: formData
-                })
-                .then(response => {
-                    if (!response.ok) {
-                        throw new Error(`HTTP error! status: ${response.status}`);
-                    }
-                    const reader = response.body.getReader();
-                    const decoder = new TextDecoder();
-                    let streamBuffer = ''; // Buffer for incoming stream chunks
-
-                    function processStream({ done, value }) {
-                        if (done) {
-                            loadingIndicator.style.display = 'none';
-                            // Process any remaining data in streamBuffer (optional, depends on backend)
-                            if (streamBuffer && streamBuffer.startsWith('data: ')) {
-                                try {
-                                     const data = JSON.parse(streamBuffer.substr(6));
-                                     if (data.content) {
-                                         solutionBuffer += data.content; // Add final piece
+                    buffer += decoder.decode(value, { stream: true });
+                    // Split reliably by double newline, handling different line ending types
+                    const lines = buffer.split(/\r?\n\r?\n/);
+                    buffer = lines.pop(); // Keep potentially incomplete chunk
+
+                    for (const line of lines) {
+                        if (line.startsWith('data: ')) {
+                            try {
+                                const data = JSON.parse(line.substr(6));
+
+                                if (data.mode) {
+                                    // Update loading indicator (same as before)
+                                    if (data.mode === 'thinking') { /* ... */ }
+                                    else if (data.mode === 'answering') { /* ... */ }
+                                    /* ... other modes ... */
+
+                                     // Simpler indicator update
+                                     const modes = {
+                                         thinking: { icon: 'fa-brain', text: 'Je réfléchis...', class: 'thinking-indicator' },
+                                         answering: { icon: 'fa-pencil-alt', text: 'Rédaction...', class: 'answering-indicator' },
+                                         executing_code: { icon: 'fa-code', text: 'Exécution...', class: 'executing-indicator' },
+                                         code_result: { icon: 'fa-terminal', text: 'Résultats...', class: 'executing-indicator' }
+                                     };
+                                     const modeInfo = modes[data.mode];
+                                     if (modeInfo) {
+                                         loadingIndicator.className = modeInfo.class;
+                                         loadingIndicator.innerHTML = `<i class="fas ${modeInfo.icon} indicator-icon"></i><span>${modeInfo.text}</span>`;
                                      }
-                                } catch (e) {
-                                     console.error('Error parsing final chunk:', e, streamBuffer);
                                 }
-                            }
-                             // Final forced update
-                            clearTimeout(updateTimeout); // Cancel any scheduled update
-                            updateDisplay(); // Render everything received
-                            return;
-                        }
 
-                        streamBuffer += decoder.decode(value, { stream: true });
-                        const lines = streamBuffer.split('\n\n');
-                        streamBuffer = lines.pop(); // Keep incomplete chunk
-
-                        for (const line of lines) {
-                            if (line.startsWith('data: ')) {
-                                try {
-                                    const data = JSON.parse(line.substr(6));
-
-                                    if (data.mode) {
-                                        currentMode = data.mode; // Store current mode if backend provides it
-                                        // Update loading indicator based on mode (same as before)
-                                        if (data.mode === 'thinking') { loadingIndicator.className = 'thinking-indicator'; loadingIndicator.innerHTML = '<i class="fas fa-brain indicator-icon"></i><span>Je réfléchis...</span>'; }
-                                        else if (data.mode === 'answering') { loadingIndicator.className = 'answering-indicator'; loadingIndicator.innerHTML = '<i class="fas fa-pencil-alt indicator-icon"></i><span>Rédaction...</span>'; }
-                                        else if (data.mode === 'executing_code') { loadingIndicator.className = 'executing-indicator'; loadingIndicator.innerHTML = '<i class="fas fa-code indicator-icon"></i><span>Exécution...</span>'; }
-                                        else if (data.mode === 'code_result') { loadingIndicator.className = 'executing-indicator'; loadingIndicator.innerHTML = '<i class="fas fa-terminal indicator-icon"></i><span>Résultats...</span>'; }
+                                if (data.content) {
+                                    const content = data.content;
+                                    // Create a temporary div to parse the potential HTML structure from content
+                                    const tempDiv = document.createElement('div');
+                                    tempDiv.innerHTML = content; // Let browser parse potential HTML within content
+
+                                    // Check if content contains a code block structure
+                                    const codeSection = tempDiv.querySelector('.code-section');
+                                    const outputSection = tempDiv.querySelector('.output-section');
+
+                                    if (codeSection) {
+                                        // It's a code block, append it directly
+                                        solutionContainer.appendChild(codeSection);
+                                        // Highlight the code within the appended section
+                                        codeSection.querySelectorAll('pre code').forEach((block) => {
+                                            hljs.highlightElement(block);
+                                        });
+                                    } else if (outputSection) {
+                                         // It's an output block
+                                         solutionContainer.appendChild(outputSection);
                                     }
-
-                                    if (data.content) {
-                                        solutionBuffer += data.content; // Append content to buffer
-                                        scheduleUpdate(); // Schedule an update
+                                    else {
+                                        // Assume it's a regular text/LaTeX step section
+                                        const stepDiv = document.createElement('div');
+                                        stepDiv.className = 'step-section';
+                                        // Use innerHTML to correctly interpret potential entities from JSON string
+                                        stepDiv.innerHTML = content;
+                                        solutionContainer.appendChild(stepDiv);
+                                        // Typeset MathJax for this specific new section
+                                        MathJax.typesetPromise([stepDiv]).catch(e => console.error('MathJax typesetting error:', e));
                                     }
+                                }
 
-                                    if (data.error) {
-                                        // Display error prominently
-                                        solutionBuffer += `\n\n**Erreur:** ${data.error}\n\n`;
-                                        scheduleUpdate(); // Show the error
-                                        loadingIndicator.style.display = 'none';
-                                    }
-                                } catch (e) {
-                                    console.error('Error parsing JSON from stream:', e, line);
-                                    // Optionally display a parsing error message to the user
-                                    solutionBuffer += `\n\n**Erreur interne:** Impossible d'interpréter une partie de la réponse.\n\n`;
-                                    scheduleUpdate();
+
+                                if (data.error) {
+                                    const errorDiv = document.createElement('div');
+                                     errorDiv.className = 'step-section'; // Style like other steps
+                                     errorDiv.style.color = 'red';
+                                     errorDiv.style.backgroundColor = '#ffeeee';
+                                     errorDiv.style.borderColor = 'red';
+                                     errorDiv.textContent = `Erreur: ${data.error}`;
+                                    solutionContainer.appendChild(errorDiv);
+                                    loadingIndicator.style.display = 'none';
                                 }
+                            } catch (e) {
+                                console.error('Error parsing JSON or processing chunk:', e, line);
+                                // Optionally display a generic error message chunk
+                                const errorDiv = document.createElement('div');
+                                errorDiv.className = 'step-section'; errorDiv.style.color = 'orange';
+                                errorDiv.textContent = `Erreur traitement chunk: ${line.substring(0, 100)}...`;
+                                solutionContainer.appendChild(errorDiv);
                             }
                         }
-                        // Continue reading the stream
-                        return reader.read().then(processStream);
                     }
-                    // Start processing the stream
+
+                    window.scrollTo(0, document.body.scrollHeight);
                     return reader.read().then(processStream);
-                })
-                .catch(error => {
-                    console.error('Fetch error:', error);
-                    solutionContainer.innerHTML = `<p style="color: red; font-weight: bold;">Erreur de connexion ou du serveur: ${error.message}</p>`;
-                    loadingIndicator.style.display = 'none';
-                });
+                }
+
+                return reader.read().then(processStream);
+            })
+            .catch(error => {
+                const errorDiv = document.createElement('div');
+                errorDiv.className = 'step-section'; // Style like other steps
+                errorDiv.style.color = 'red';
+                errorDiv.style.backgroundColor = '#ffeeee';
+                errorDiv.style.borderColor = 'red';
+                errorDiv.textContent = `Erreur de connexion ou du serveur: ${error}`;
+                solutionContainer.appendChild(errorDiv); // Append error inside the solution area
+                loadingIndicator.style.display = 'none';
+                console.error('Fetch error:', error);
             });
         });
     </script>