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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>Mariam M-1 | Solution Mathématique</title>
  <!-- Tailwind CSS -->
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/tailwind.min.css" rel="stylesheet">

  <!-- SweetAlert2 -->
  <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>

  <!-- Highlight.js pour la coloration syntaxique -->
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/styles/github.min.css">
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  <style>
    @import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;700&display=swap');
    body { font-family: 'Space Grotesk', sans-serif; }

    .uploadArea {
      background: #f3f4f6;
      border: 2px dashed #d1d5db;
      transition: border-color 0.2s ease;
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    .uploadArea:hover { border-color: #3b82f6; }

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    .blue-button:hover:not(:disabled) { background: #2563eb; } /* Hover only when not disabled */
    .blue-button:disabled {
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    .loader {
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      height: 48px;
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      border-bottom-color: transparent;
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      display: inline-block;
      animation: rotation 1s linear infinite;
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    @keyframes rotation { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

    .thought-box {
      transition: max-height 0.3s ease-out;
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      overflow: hidden;
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    .thought-box.open { max-height: 500px; }

    #thoughtsContent, #answerContent {
      max-height: 500px;
      overflow-y: auto;
      scroll-behavior: smooth;
      white-space: pre-wrap;
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    .preview-image { max-width: 300px; max-height: 300px; object-fit: contain; }

    .timestamp { color: #3b82f6; font-size: 0.9em; margin-left: 8px; }

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    th { background-color: #f3f4f6; font-weight: 600; }
    .table-responsive { overflow-x: auto; }

    /* Style pour le bouton Sauvegarder afin de le mettre en évidence */
    #saveButton {
      background: #3b82f6;
      color: white;
      padding: 0.5rem 1rem;
      border-radius: 0.375rem;
      transition: background-color 0.2s ease;
    }
    #saveButton:hover { background: #2563eb; }

    /* Modal plein écran pour les sauvegardes */
    #savedModal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.5);
      z-index: 50;
    }
    #savedModal.active { display: block; }
    #savedModalContent {
      background: #fff;
      width: 100%;
      height: 100%;
      overflow-y: auto;
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    /* Styles spécifiques pour le code et son exécution */
    pre {
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      border-radius: 0.375rem;
      padding: 1rem;
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      font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
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    code {
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      margin: 0.5rem 0;
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    .content-image { margin: 1rem 0; text-align: center; }
    .content-image img { max-width: 100%; }

  </style>
</head>
<body class="p-4">
  <div class="max-w-4xl mx-auto">
    <header class="p-6 text-center mb-8">
      <h1 class="text-4xl font-bold text-blue-600">Mariam M-?</h1>
      <p class="text-gray-600">Solution Mathématique/Physique/Chimie Intelligente, avec intégration d'une calculatrice.</p>
      <p style="color: red;">Mode standard. Passez au premium pour de très hautes performances.</p>
      <div class="mt-4 flex justify-end">
        <button id="openSaved" class="blue-button px-4 py-2 text-white rounded">Sauvegardes</button>
      </div>
    </header>

    <main id="mainContent">
      <form id="problemForm" class="space-y-6" novalidate>
        <!-- Zone de dépôt / sélection d'image -->
        <div class="uploadArea p-8 text-center relative" aria-label="Zone de dépôt d'image">
          <input type="file" id="imageInput" name="image" accept="image/*" class="absolute inset-0 w-full h-full opacity-0 cursor-pointer" aria-label="Choisir une image">
          <div class="space-y-3">
            <div class="w-16 h-16 mx-auto border-2 border-blue-400 rounded-full flex items-center justify-center">
              <svg class="w-8 h-8 text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
                  d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z" />
              </svg>
            </div>
            <p class="text-gray-700 font-medium">Déposez votre image ici</p>
            <p class="text-gray-500 text-sm">ou cliquez pour sélectionner</p>
          </div>
        </div>
        <!-- Aperçu de l'image -->
        <div id="imagePreview" class="hidden text-center">
          <img id="previewImage" class="preview-image mx-auto" alt="Prévisualisation de l'image">
        </div>
        <!-- Le bouton de soumission -->
        <button type="submit" id="submitButton" class="blue-button w-full py-3 text-white font-medium rounded-lg">
          Résoudre le problème
        </button>
      </form>

      <!-- Loader -->
      <div id="loader" class="hidden mt-8 text-center">
        <span class="loader"></span>
        <p class="mt-4 text-gray-600">Analyse en cours...</p>
      </div>

      <!-- Zone d'affichage de la solution -->
      <section id="solution" class="hidden mt-8 space-y-6 relative">
        <div class="border-t pt-4">
          <button id="thoughtsToggle" type="button" class="w-full flex justify-between items-center p-2">
            <span class="font-medium text-gray-700">Processus de Réflexion</span>
            <span id="timestamp" class="timestamp"></span>
          </button>
          <div id="thoughtsBox" class="thought-box">
            <div id="thoughtsContent" class="p-4 text-gray-600"></div>
          </div>
        </div>
        <div class="border-t pt-6">
          <div class="flex justify-between items-center">
            <h3 class="text-xl font-bold text-gray-800 mb-4">Solution</h3>
            <!-- Bouton Sauvegarder mis en évidence -->
            <button id="saveButton">Sauvegarder</button>
          </div>
          <div id="answerContent" class="text-gray-700 table-responsive"></div>
        </div>
      </section>
    </main>
  </div>

  <!-- Modal plein écran pour les sauvegardes -->
  <div id="savedModal">
    <div id="savedModalContent" class="p-6">
      <header class="flex justify-between items-center border-b pb-4">
        <h2 class="text-2xl font-bold">Sauvegardes</h2>
        <button id="closeSaved" class="text-3xl text-gray-600">×</button>
      </header>
      <div id="savedListContainer" class="mt-4">
        <ul id="savedList" class="space-y-4">
          <!-- Liste des sauvegardes insérée dynamiquement -->
        </ul>
      </div>
      <div class="mt-6">
        <button id="newExercise" class="blue-button w-full py-3 text-white font-medium rounded-lg">
          Résoudre un nouvel exercice
        </button>
      </div>
    </div>
  </div>

  <script>
    document.addEventListener('DOMContentLoaded', () => {
      // Récupération des éléments
      const form = document.getElementById('problemForm');
      const imageInput = document.getElementById('imageInput');
      const submitButton = document.getElementById('submitButton'); // Get the submit button
      const loader = document.getElementById('loader');
      const solutionSection = document.getElementById('solution');
      const thoughtsContent = document.getElementById('thoughtsContent');
      const answerContent = document.getElementById('answerContent');
      const thoughtsToggle = document.getElementById('thoughtsToggle');
      const thoughtsBox = document.getElementById('thoughtsBox');
      const imagePreview = document.getElementById('imagePreview');
      const previewImage = document.getElementById('previewImage');
      const timestamp = document.getElementById('timestamp');
      const saveButton = document.getElementById('saveButton');
      const openSaved = document.getElementById('openSaved');
      const closeSaved = document.getElementById('closeSaved');
      const savedModal = document.getElementById('savedModal');
      const savedList = document.getElementById('savedList');
      const newExercise = document.getElementById('newExercise');
      const mainContent = document.getElementById('mainContent'); // This variable is not used in the original logic, keeping it but it could be removed.

      let startTime = null;
      let timerInterval = null;
      let thoughtsBuffer = '';
      let answerBuffer = '';
      let currentMode = null;
      let updateTimeout = null;

      // --- Délai de soumission local ---
      const COOLDOWN_DURATION = 3 * 60 * 1000; // 3 minutes en millisecondes
      const LAST_SUBMISSION_KEY = 'lastSubmissionTime';
      let cooldownTimer = null; // Pour l'intervalle de mise à jour du bouton

      // Fonction pour récupérer le timestamp de la dernière soumission depuis localStorage
      const getLastSubmissionTime = () => {
        const timestamp = localStorage.getItem(LAST_SUBMISSION_KEY);
        return timestamp ? parseInt(timestamp, 10) : null;
      };

      // Fonction pour enregistrer le timestamp de la soumission actuelle dans localStorage
      const setLastSubmissionTime = () => {
        localStorage.setItem(LAST_SUBMISSION_KEY, Date.now().toString());
      };

      // Fonction pour vérifier le délai et mettre à jour l'état du bouton
      const updateSubmitButtonState = () => {
        const lastSubmit = getLastSubmissionTime();
        const now = Date.now();

        if (lastSubmit && now - lastSubmit < COOLDOWN_DURATION) {
          const remainingTime = COOLDOWN_DURATION - (now - lastSubmit);
          const minutes = Math.floor(remainingTime / 60000);
          const seconds = Math.floor((remainingTime % 60000) / 1000);
          submitButton.disabled = true;
          submitButton.textContent = `Prochaine soumission dans ${minutes}:${seconds.toString().padStart(2, '0')}`;

          // Démarrer le timer si ce n'est pas déjà fait
          if (!cooldownTimer) {
            cooldownTimer = setInterval(updateSubmitButtonState, 1000);
          }
        } else {
          // Le délai est terminé ou il n'y a pas de soumission précédente
          submitButton.disabled = false;
          submitButton.textContent = 'Résoudre le problème';
          // Arrêter le timer s'il était en cours
          if (cooldownTimer) {
            clearInterval(cooldownTimer);
            cooldownTimer = null;
          }
        }
      };

      // Appeler la fonction au chargement de la page pour initialiser l'état du bouton
      updateSubmitButtonState();
      // --- Fin Délai de soumission local ---


      // Mise à jour du temps écoulé (pour l'analyse en cours)
      const updateTimestamp = () => {
        if (startTime) {
          const seconds = Math.floor((Date.now() - startTime) / 1000);
          timestamp.textContent = `${seconds}s`;
        }
      };
      const startTimer = () => { startTime = Date.now(); timerInterval = setInterval(updateTimestamp, 1000); updateTimestamp(); };
      const stopTimer = () => { clearInterval(timerInterval); startTime = null; timestamp.textContent = ''; };

      // Affichage de l'image sélectionnée
      const handleFileSelect = file => {
        if (!file) return;
        const reader = new FileReader();
        reader.onload = e => {
          previewImage.src = e.target.result;
          imagePreview.classList.remove('hidden');
        };
        reader.readAsDataURL(file);
      };

      thoughtsToggle.addEventListener('click', () => { thoughtsBox.classList.toggle('open'); });
      imageInput.addEventListener('change', e => handleFileSelect(e.target.files[0]));

      // Gestion du glisser-déposer
      const dropZone = document.querySelector('.uploadArea');
      dropZone.addEventListener('dragover', e => { e.preventDefault(); dropZone.classList.add('border-blue-400'); });
      dropZone.addEventListener('dragleave', e => { e.preventDefault(); dropZone.classList.remove('border-blue-400'); });
      dropZone.addEventListener('drop', e => { e.preventDefault(); dropZone.classList.remove('border-blue-400'); handleFileSelect(e.dataTransfer.files[0]); });

      // Fonction pour appliquer la coloration syntaxique
      const applyHighlighting = () => {
        document.querySelectorAll('pre code').forEach((block) => {
          hljs.highlightBlock(block);
        });
      };

      // Rendu MathJax et mise à jour de l'affichage
      const typesetAnswerIfReady = async () => {
        if (window.mathJaxReady) {
          // Target specific elements for MathJax typesetting if needed, or document.body
          // Targeting answerContent and thoughtsContent is safer for performance
          MathJax.startup.document.elements = [document.getElementById('answerContent'), document.getElementById('thoughtsContent')];
          await MathJax.typesetPromise();
          applyHighlighting(); // Apply highlighting after MathJax
          // Keep scrolling behavior only for the main answer content maybe
          // answerContent.scrollTop = answerContent.scrollHeight; // Auto-scroll might be jumpy with streaming
        } else { setTimeout(typesetAnswerIfReady, 200); }
      };

      const updateDisplay = async () => {
        // Use innerHTML = marked.parse(...) for streaming updates
        thoughtsContent.innerHTML = marked.parse(thoughtsBuffer);
        answerContent.innerHTML = marked.parse(answerBuffer);

        // Trigger MathJax typesetting and highlighting *after* updating innerHTML
        await typesetAnswerIfReady();

        // Optional: auto-scroll only the answer content if it's the active stream
        if (currentMode === 'answering') {
             answerContent.scrollTop = answerContent.scrollHeight;
        } else if (currentMode === 'thinking') {
             thoughtsContent.scrollTop = thoughtsContent.scrollHeight;
        }

        updateTimeout = null;
      };

      const scheduleUpdate = () => { if (!updateTimeout) updateTimeout = setTimeout(updateDisplay, 200); };

      marked.setOptions({
        gfm: true,
        breaks: true,
        highlight: function(code, lang) {
          if (lang && hljs.getLanguage(lang)) {
            try {
              return hljs.highlight(code, { language: lang }).value;
            } catch (error) {
               console.error("Highlighting error:", error);
               return code; // Return original code on error
            }
          }
          // Default highlighting for unrecognised languages or no language specified
          try {
              return hljs.highlightAuto(code).value;
          } catch (error) {
              console.error("Auto highlighting error:", error);
              return code; // Return original code on error
          }
        }
      });


      // Envoi de l'image pour résolution
      form.addEventListener('submit', async e => {
        e.preventDefault(); // Empêcher la soumission par défaut pour gérer le délai

        // --- Vérification du délai ---
        const lastSubmit = getLastSubmissionTime();
        const now = Date.now();

        if (lastSubmit && now - lastSubmit < COOLDOWN_DURATION) {
            const remainingTime = COOLDOWN_DURATION - (now - lastSubmit);
            const minutes = Math.floor(remainingTime / 60000);
            const seconds = Math.floor((remainingTime % 60000) / 1000);
            Swal.fire({
                icon: 'warning',
                title: 'Veuillez patienter',
                text: `Vous devez attendre ${minutes} minute(s) et ${seconds.toString().padStart(2, '0')} seconde(s) avant de soumettre à nouveau.`
            });
            // Mettre à jour l'état du bouton immédiatement après le message d'erreur
            updateSubmitButtonState();
            return; // Arrêter le processus de soumission
        }
        // --- Fin Vérification du délai ---


        const file = imageInput.files[0];
        if (!file) {
          Swal.fire({
            icon: 'error',
            title: 'Image manquante',
            text: 'Veuillez sélectionner une image.'
          });
          // Re-vérifier et potentiellement réactiver le bouton si aucune image n'est sélectionnée
          updateSubmitButtonState();
          return;
        }

        // --- Le délai est passé ou n'existait pas, on procède ---
        setLastSubmissionTime(); // Enregistrer le nouveau timestamp *avant* de commencer
        updateSubmitButtonState(); // Désactiver et mettre à jour le bouton


        startTimer();
        loader.classList.remove('hidden');
        solutionSection.classList.add('hidden');
        thoughtsContent.innerHTML = ''; // Vider le contenu précédent
        answerContent.innerHTML = '';   // Vider le contenu précédent
        thoughtsBuffer = ''; // Vider les buffers
        answerBuffer = '';
        currentMode = null; // Reset mode

        // thoughtsBox starts open by default, keep it open during processing
        thoughtsBox.classList.add('open');

        const formData = new FormData();
        formData.append('image', file);

        try {
          // Hardcode the endpoint to /solved
          const response = await fetch('/solved', { method: 'POST', body: formData });

          if (!response.ok) {
             // Handle HTTP errors
             const errorText = await response.text();
             throw new Error(`HTTP error! status: ${response.status}, body: ${errorText}`);
          }

          if (!response.body) {
              throw new Error('Response body is not available (e.g., not a streaming response)');
          }

          const reader = response.body.getReader();
          const decoder = new TextDecoder();
          let buffer = '';

          const processChunk = async chunk => {
            buffer += decoder.decode(chunk, { stream: true });
            const lines = buffer.split('\n\n');
            buffer = lines.pop(); // Keep the last potentially incomplete line in buffer

            for (const line of lines) {
              if (!line.startsWith('data:')) {
                  // console.warn('Skipping non-data line:', line); // Log non-data lines
                  continue;
              }
              try {
                  const data = JSON.parse(line.slice(5));

                  if (data.mode) {
                    currentMode = data.mode;
                    // Hide loader and show solution section once streaming starts
                    loader.classList.add('hidden');
                    solutionSection.classList.remove('hidden');
                  }

                  // Process content based on currentMode and data type
                  if (data.content !== undefined) { // Check for undefined to allow empty strings
                    if (currentMode === 'thinking') {
                      thoughtsBuffer += data.content;
                    } else if (currentMode === 'answering') {
                      // Handle different types within answering mode
                      switch(data.type) {
                        case 'code':
                          // Use markdown code block syntax
                          answerBuffer += "\n```\n" + data.content + "\n```\n";
                          break;
                        case 'result':
                           // Format results clearly, handling multiple lines
                           const formattedResult = data.content.split('\n').map(line => `> ${line}`).join('\n');
                           answerBuffer += "\n" + formattedResult + "\n";
                           break;
                        case 'image':
                          // Include images as markdown images
                          answerBuffer += `\n![Résultat](data:image/png;base64,${data.content})\n`;
                          break;
                        case 'text': // Explicitly handle text within answering mode
                        default: // Default behavior is to append text
                          answerBuffer += data.content;
                          break;
                      }
                    }
                  }

                  if (data.error) {
                    // Append error to the relevant buffer or main answer buffer
                    if (currentMode === 'thinking') {
                        thoughtsBuffer += `\n**Erreur pendant la réflexion:** ${data.error}\n`;
                    } else { // Assume error relates to the answer process
                        answerBuffer += `\n**Erreur:** ${data.error}\n`;
                    }
                  }

                } catch (e) {
                   console.error('Error parsing JSON data:', line.slice(5), e);
                   // Append a parsing error message to the output
                   if (currentMode === 'thinking') { thoughtsBuffer += `\n[Erreur de traitement du flux]`; }
                   else { answerBuffer += `\n[Erreur de traitement du flux]`; }
                }
            }
            scheduleUpdate(); // Schedule display update after processing a batch of lines
          };

          // Start processing the stream
          while (true) {
            const { done, value } = await reader.read();
            if (done) {
               // Process any remaining buffer
               if (buffer.length > 0) { // Process any data left in the buffer
                   // Even if it's not a full line, decode and append what's left
                   // Note: This might result in incomplete markdown being displayed
                    if (currentMode === 'thinking') {
                        thoughtsBuffer += decoder.decode(buffer, { stream: true });
                    } else if (currentMode === 'answering') {
                         answerBuffer += decoder.decode(buffer, { stream: true });
                    }
                    buffer = ''; // Clear buffer after processing
               }
              scheduleUpdate(); // Final display update to render last buffer content
              break; // Exit loop
            }
            // Process the received chunk
            await processChunk(value);
          }

        } catch (error) {
          console.error('Erreur de Fetch ou du Stream:', error);
           // Append a user-friendly error message to the answer area if nothing is there, or append to existing content
          if(answerContent.innerHTML === '' && answerBuffer === '') { // If solution area is empty
             answerContent.innerHTML = `<div class="text-red-500">Une erreur est survenue lors du traitement de votre demande: ${error.message}</div>`;
          } else { // If some output exists, append the error
             answerBuffer += `\n\n<div class="text-red-500">Une erreur est survenue: ${error.message}</div>`;
             scheduleUpdate(); // Update display with the appended error
          }
          Swal.fire({
            icon: 'error',
            title: 'Erreur de connexion ou de traitement',
            text: `Une erreur est survenue lors du traitement de votre demande. Détails: ${error.message}`
          });
        } finally {
          // Code qui s'exécute après try/catch, qu'il y ait eu une erreur ou non
          stopTimer(); // Arrêter le timer de l'analyse
          loader.classList.add('hidden'); // Cacher le loader
          solutionSection.classList.remove('hidden'); // S'assurer que la section solution est visible

          // --- Mise à jour finale de l'état du bouton ---
          updateSubmitButtonState(); // Vérifier si le délai est terminé et mettre à jour le bouton
          // --- Fin Mise à jour finale ---
        }
      });


      // Sauvegarde de la solution avec SweetAlert2
      saveButton.addEventListener('click', () => {
        Swal.fire({
          title: 'Sauvegarder la solution',
          input: 'text',
          inputLabel: 'Nom de la sauvegarde',
          inputPlaceholder: 'Entrez un nom pour cette sauvegarde',
          showCancelButton: true,
          confirmButtonText: 'Sauvegarder',
          cancelButtonText: 'Annuler',
          inputValidator: (value) => {
             if (!value) {
               return 'Veuillez donner un nom à votre sauvegarde !';
             }
          }
        }).then((result) => {
          if (result.isConfirmed && result.value) {
            const saveName = result.value;
            const savedExercises = JSON.parse(localStorage.getItem('savedExercises') || '{}');

            if (savedExercises[saveName]) {
                 // Ask if user wants to overwrite
                 Swal.fire({
                    title: `Sauvegarde "${saveName}" existe déjà. Écraser ?`,
                    icon: 'warning',
                    showCancelButton: true,
                    confirmButtonColor: '#3085d6',
                    cancelButtonColor: '#d33',
                    confirmButtonText: 'Oui, écraser',
                    cancelButtonText: 'Annuler'
                 }).then((overwriteResult) => {
                    if (overwriteResult.isConfirmed) {
                        saveCurrentSolution(saveName, savedExercises);
                    }
                 });
            } else {
                 saveCurrentSolution(saveName, savedExercises);
            }
          }
        });
      });

      const saveCurrentSolution = (saveName, existingSaves) => {
           const saveData = {
              answer: answerContent.innerHTML, // Save the rendered HTML
              thinking: thoughtsContent.innerHTML, // Save the rendered HTML
              date: new Date().toLocaleString()
            };
            existingSaves[saveName] = saveData;
            localStorage.setItem('savedExercises', JSON.stringify(existingSaves));
            Swal.fire({
              icon: 'success',
              title: 'Sauvegarde réussie',
              text: 'Votre solution a bien été sauvegardée !',
              timer: 2000,
              showConfirmButton: false
            });
      };


      // Chargement des sauvegardes dans le modal
      const loadSavedList = () => {
        savedList.innerHTML = '';
        const savedExercises = JSON.parse(localStorage.getItem('savedExercises') || '{}');

        if (Object.keys(savedExercises).length === 0) {
          savedList.innerHTML = '<li class="text-gray-500 text-center py-8">Aucune sauvegarde disponible</li>';
          return;
        }

        // Sort by date, newest first (optional but nice)
        const sortedEntries = Object.entries(savedExercises).sort(([,a], [,b]) => new Date(b.date) - new Date(a.date));


        for (const [name, data] of sortedEntries) {
          const li = document.createElement('li');
          li.className = 'border-b pb-2';
          li.innerHTML = `
            <div class="flex justify-between items-center">
              <button class="text-left text-blue-600 hover:underline" data-save="${encodeURIComponent(name)}">
                ${name} <span class="text-gray-500 text-xs">(${data.date})</span>
              </button>
              <button class="text-red-500 hover:text-red-700" data-delete="${encodeURIComponent(name)}">
                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor">
                  <path fill-rule="evenodd" d="M9 2a1 1 0 00-.894.553L7.382 4H4a1 1 0 000 2v10a2 2 0 002 2h8a2 2 0 002-2V6a1 1 0 100-2h-3.382l-.724-1.447A1 1 0 0011 2H9zM7 8a1 1 0 012 0v6a1 1 0 11-2 0V8zm5-1a1 1 0 00-1 1v6a1 1 0 102 0V8a1 1 0 00-1-1z" clip-rule="evenodd" />
                </svg>
              </button>
            </div>
          `;
          savedList.appendChild(li);
        }
      };

      // Gestion des clics sur les sauvegardes
      savedList.addEventListener('click', (e) => {
        // Chargement d'une sauvegarde
        if (e.target && e.target.dataset.save) {
          const saveName = decodeURIComponent(e.target.dataset.save);
          const savedExercises = JSON.parse(localStorage.getItem('savedExercises') || '{}');
          const data = savedExercises[saveName];
          if (data) {
            // Hide the form and loader, show the solution section
            form.classList.add('hidden');
            loader.classList.add('hidden');
            solutionSection.classList.remove('hidden');

            // Load the saved HTML content
            thoughtsContent.innerHTML = data.thinking;
            answerContent.innerHTML = data.answer;

            // Close the modal
            savedModal.classList.remove('active');

            // Re-render MathJax and apply highlighting to the loaded HTML
            // Use MathJax.typesetPromise() on the specific elements
             if (window.mathJaxReady) {
                MathJax.startup.document.elements = [thoughtsContent, answerContent]; // Target both potentially
                MathJax.typesetPromise().then(() => {
                   applyHighlighting(); // Apply highlighting after MathJax
                }).catch((err) => console.error("MathJax typesetting failed:", err));
             } else {
                console.warn("MathJax not ready yet, cannot typeset saved content.");
             }

            // Ensure thoughts box is open when viewing a saved solution
            thoughtsBox.classList.add('open');

            // Reset buffers and timer as this is static content
            thoughtsBuffer = ''; // Buffers are for streaming, not needed for static load
            answerBuffer = ''; // Buffers are for streaming, not needed for static load
            currentMode = null; // Not streaming
            stopTimer(); // Stop the live timer
            timestamp.textContent = data.date; // Show saved date as timestamp
            submitButton.disabled = true; // Disable submit button while viewing a save
            submitButton.textContent = `Vue de la sauvegarde: ${saveName}`;
          }
        }

        // Suppression d'une sauvegarde
        if (e.target && (e.target.dataset.delete || e.target.closest('[data-delete]'))) {
          const deleteName = decodeURIComponent(e.target.dataset.delete || e.target.closest('[data-delete]').dataset.delete);

          Swal.fire({
            title: 'Êtes-vous sûr ?',
            text: "Cette sauvegarde sera définitivement supprimée.",
            icon: 'warning',
            showCancelButton: true,
            confirmButtonColor: '#3085d6',
            cancelButtonColor: '#d33',
            confirmButtonText: 'Oui, supprimer',
            cancelButtonText: 'Annuler'
          }).then((result) => {
            if (result.isConfirmed) {
              const savedExercises = JSON.parse(localStorage.getItem('savedExercises') || '{}');
              delete savedExercises[deleteName];
              localStorage.setItem('savedExercises', JSON.stringify(savedExercises));

              Swal.fire(
                'Supprimé !',
                'La sauvegarde a été supprimée.',
                'success'
              );

              loadSavedList(); // Refresh the list in the modal
              // If the deleted save was being viewed, reset the view
              if (submitButton.textContent.includes(`Vue de la sauvegarde: ${deleteName}`)) {
                 resetToNewExerciseState();
              }
            }
          });
        }
      });

      // Ouverture / fermeture du modal de sauvegardes
      openSaved.addEventListener('click', () => { loadSavedList(); savedModal.classList.add('active'); });
      closeSaved.addEventListener('click', () => { savedModal.classList.remove('active'); });

      // Fonction pour réinitialiser l'état pour un nouvel exercice
      const resetToNewExerciseState = () => {
         // Reset form and hide solution
        form.reset();
        form.classList.remove('hidden');
        solutionSection.classList.add('hidden');
        imagePreview.classList.add('hidden'); // Hide image preview
        previewImage.src = ''; // Clear image source

        // Clear content areas and buffers
        thoughtsContent.innerHTML = '';
        answerContent.innerHTML = '';
        thoughtsBuffer = '';
        answerBuffer = '';
        currentMode = null; // Reset mode

        // Stop timer and clear timestamp
        stopTimer();
        timestamp.textContent = '';

        // Ensure thoughts box is collapsed for a new exercise
        thoughtsBox.classList.remove('open');

        // Update button state based on cooldown
        updateSubmitButtonState(); // This will enable/disable based on the 3-min rule

         // Close the modal if open
        savedModal.classList.remove('active');
      };


      // Bouton présent uniquement dans le modal pour lancer un nouvel exercice
      newExercise.addEventListener('click', resetToNewExerciseState);


      // Initial check for cooldown on page load
      updateSubmitButtonState();

    });
  </script>
</body>
</html>