Update templates/index.html

templates/index.html

@@ -21,58 +21,15 @@
         extend: {
           fontFamily: {
             sans: ['Inter', 'system-ui', 'sans-serif'],
-            mono: ['"JetBrains Mono"', 'monospace'],
+            mono: ['"JetBrains Mono"', 'monospace']
           },
           colors: {
-            primary: {
-              50: '#f0f9ff',
-              100: '#e0f2fe',
-              200: '#bae6fd',
-              300: '#7dd3fc',
-              400: '#38bdf8',
-              500: '#0ea5e9',
-              600: '#0284c7',
-              700: '#0369a1',
-              800: '#075985',
-              900: '#0c4a6e',
-            },
-            secondary: {
-              50: '#f8fafc',
-              100: '#f1f5f9',
-              200: '#e2e8f0',
-              300: '#cbd5e1',
-              400: '#94a3b8',
-              500: '#64748b',
-              600: '#475569',
-              700: '#334155',
-              800: '#1e293b',
-              900: '#0f172a',
-            },
-            accent: {
-              50: '#fdf4ff',
-              100: '#fae8ff',
-              200: '#f5d0fe',
-              300: '#f0abfc',
-              400: '#e879f9',
-              500: '#d946ef',
-              600: '#c026d3',
-              700: '#a21caf',
-              800: '#86198f',
-              900: '#701a75',
-            }
-          },
-          animation: {
-            'bounce-slow': 'bounce 2s infinite',
-            'pulse-slow': 'pulse 3s infinite',
-            'typing': 'typing 1.2s steps(3) infinite',
+            primary: { 50: '#f0f9ff', 100: '#e0f2fe', 200: '#bae6fd', 300: '#7dd3fc', 400: '#38bdf8', 500: '#0ea5e9', 600: '#0284c7', 700: '#0369a1', 800: '#075985', 900: '#0c4a6e' },
+            secondary: { 50: '#f8fafc', 100: '#f1f5f9', 200: '#e2e8f0', 300: '#cbd5e1', 400: '#94a3b8', 500: '#64748b', 600: '#475569', 700: '#334155', 800: '#1e293b', 900: '#0f172a' },
+            accent: { 50: '#fdf4ff', 100: '#fae8ff', 200: '#f5d0fe', 300: '#f0abfc', 400: '#e879f9', 500: '#d946ef', 600: '#c026d3', 700: '#a21caf', 800: '#86198f', 900: '#701a75' }
           },
-          keyframes: {
-            typing: {
-              '0%': { width: '0.15em' },
-              '50%': { width: '0.7em' },
-              '100%': { width: '0.15em' },
-            }
-          }
+          animation: { 'bounce-slow': 'bounce 2s infinite', 'pulse-slow': 'pulse 3s infinite', 'typing': 'typing 1.2s steps(3) infinite' },
+          keyframes: { typing: { '0%': { width: '0.15em' }, '50%': { width: '0.7em' }, '100%': { width: '0.15em' } } }
         }
       }
     }
@@ -80,25 +37,38 @@
   <style>
     html {
       scroll-behavior: smooth;
+      overflow-x: hidden; /* Empêche le scroll horizontal global */
     }
     body {
       font-family: 'Inter', sans-serif;
       transition: background-color 0.3s ease, color 0.3s ease;
+      overflow-x: hidden; /* Empêche le scroll horizontal du body */
     }
     .chat-layout {
       min-height: calc(100vh - 64px);
       display: grid;
       grid-template-rows: 1fr auto;
     }
-    ::-webkit-scrollbar { width: 5px; height: 5px; }
-    ::-webkit-scrollbar-track { background: transparent; }
+    ::-webkit-scrollbar {
+      width: 5px;
+      height: 5px;
+    }
+    ::-webkit-scrollbar-track {
+      background: transparent;
+    }
     ::-webkit-scrollbar-thumb {
       background: #cbd5e1;
       border-radius: 5px;
     }
-    .dark ::-webkit-scrollbar-thumb { background: #475569; }
-    ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }
-    .dark ::-webkit-scrollbar-thumb:hover { background: #64748b; }
+    .dark ::-webkit-scrollbar-thumb {
+      background: #475569;
+    }
+    ::-webkit-scrollbar-thumb:hover {
+      background: #94a3b8;
+    }
+    .dark ::-webkit-scrollbar-thumb:hover {
+      background: #64748b;
+    }
     .message-bubble {
       position: relative;
       max-width: 85%;
@@ -133,27 +103,6 @@
       color: #e2e8f0;
       border-color: #334155;
     }
-    .user-message::after {
-      content: '';
-      position: absolute;
-      bottom: -0.5rem;
-      right: 0.125rem;
-      width: 0.75rem;
-      height: 0.75rem;
-      background: #2563eb;
-      clip-path: polygon(0 0, 100% 0, 100% 100%);
-    }
-    .assistant-message::after {
-      content: '';
-      position: absolute;
-      bottom: -0.5rem;
-      left: 0.125rem;
-      width: 0.75rem;
-      height: 0.75rem;
-      background: #f8fafc;
-      clip-path: polygon(0 0, 100% 0, 0 100%);
-    }
-    .dark .assistant-message::after { background: #1e293b; }
     @keyframes message-fade-in {
       from { opacity: 0; transform: translateY(10px); }
       to { opacity: 1; transform: translateY(0); }
@@ -182,7 +131,9 @@
       background-color: #0f172a;
       color: #e2e8f0;
     }
-    .tooltip { position: relative; }
+    .tooltip {
+      position: relative;
+    }
     .tooltip .tooltip-text {
       visibility: hidden;
       width: max-content;
@@ -203,7 +154,10 @@
       box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
       pointer-events: none;
     }
-    .dark .tooltip .tooltip-text { background-color: #475569; color: #f1f5f9; }
+    .dark .tooltip .tooltip-text {
+      background-color: #475569;
+      color: #f1f5f9;
+    }
     .tooltip .tooltip-text::after {
       content: "";
       position: absolute;
@@ -214,8 +168,13 @@
       border-style: solid;
       border-color: #1e293b transparent transparent transparent;
     }
-    .dark .tooltip .tooltip-text::after { border-color: #475569 transparent transparent transparent; }
-    .tooltip:hover .tooltip-text { visibility: visible; opacity: 1; }
+    .dark .tooltip .tooltip-text::after {
+      border-color: #475569 transparent transparent transparent;
+    }
+    .tooltip:hover .tooltip-text {
+      visibility: visible;
+      opacity: 1;
+    }
     .copy-btn {
       position: absolute;
       top: 0.5rem;
@@ -224,7 +183,9 @@
       transition: opacity 0.2s ease, background-color 0.2s ease;
       z-index: 2;
     }
-    .message-bubble:hover .copy-btn { opacity: 1; }
+    .message-bubble:hover .copy-btn {
+      opacity: 1;
+    }
     .file-preview {
       max-width: 300px;
       margin: 0.5rem auto;
@@ -233,7 +194,9 @@
       border-radius: 0.5rem;
       transition: transform 0.2s ease;
     }
-    .file-preview:hover { transform: scale(1.02); }
+    .file-preview:hover {
+      transform: scale(1.02);
+    }
     .file-preview img {
       width: 100%;
       height: auto;
@@ -259,14 +222,21 @@
       transition: opacity 0.2s ease;
     }
     .chip .chip-close:hover { opacity: 1; }
-    .dark .chip { background: #0c4a6e; color: #7dd3fc; }
+    .dark .chip {
+      background: #0c4a6e;
+      color: #7dd3fc;
+    }
     .toggle-switch {
       position: relative;
       display: inline-block;
       width: 2.5rem;
       height: 1.25rem;
     }
-    .toggle-switch input { opacity: 0; width: 0; height: 0; }
+    .toggle-switch input {
+      opacity: 0;
+      width: 0;
+      height: 0;
+    }
     .toggle-slider {
       position: absolute;
       cursor: pointer;
@@ -289,11 +259,21 @@
       transition: .4s;
       border-radius: 50%;
     }
-    input:checked + .toggle-slider { background-color: #0ea5e9; }
-    input:focus + .toggle-slider { box-shadow: 0 0 1px #0ea5e9; }
-    input:checked + .toggle-slider:before { transform: translateX(1.125rem); }
-    .dark .toggle-slider { background-color: #475569; }
-    .dark input:checked + .toggle-slider { background-color: #38bdf8; }
+    input:checked + .toggle-slider {
+      background-color: #0ea5e9;
+    }
+    input:focus + .toggle-slider {
+      box-shadow: 0 0 1px #0ea5e9;
+    }
+    input:checked + .toggle-slider:before {
+      transform: translateX(1.125rem);
+    }
+    .dark .toggle-slider {
+      background-color: #475569;
+    }
+    .dark input:checked + .toggle-slider {
+      background-color: #38bdf8;
+    }
     .chat-input {
       transition: all 0.3s ease;
       border-color: #e2e8f0;
@@ -319,7 +299,10 @@
       padding: 1.25rem 1rem;
       overflow-x: auto;
     }
-    .dark pre { background-color: #1e293b; color: #e2e8f0; }
+    .dark pre {
+      background-color: #1e293b;
+      color: #e2e8f0;
+    }
     code {
       font-family: 'JetBrains Mono', monospace;
       font-size: 0.875rem;
@@ -331,91 +314,122 @@
       opacity: 0;
       transition: opacity 0.2s ease;
     }
-    pre:hover .code-copy-btn { opacity: 0.7; }
-    pre:hover .code-copy-btn:hover { opacity: 1; }
-
+    pre:hover .code-copy-btn {
+      opacity: 0.7;
+    }
     /* Styles pour améliorer les tableaux Markdown */
+    .prose {
+      overflow-wrap: break-word;
+      word-break: break-word;
+    }
+    .table-wrapper {
+      overflow-x: auto;
+      margin: 1rem 0;
+      border: 1px solid #e2e8f0;
+      border-radius: 0.5rem;
+    }
+    .dark .table-wrapper {
+      border-color: #334155;
+    }
     .prose table {
       width: 100%;
+      min-width: 500px;
       border-collapse: collapse;
-      margin: 1rem 0;
-      overflow-x: auto;
-      display: block;
+      margin: 0;
     }
-    
     .prose table th,
     .prose table td {
       border: 1px solid #e2e8f0;
       padding: 0.5rem 0.75rem;
       text-align: left;
+      border-top: none;
+      border-left: none;
+      border-right: none;
+    }
+    .prose table th {
+      border-bottom-width: 2px;
     }
-    
     .dark .prose table th,
     .dark .prose table td {
       border-color: #334155;
     }
-    
     .prose table thead {
       background-color: #f8fafc;
       font-weight: 600;
     }
-    
     .dark .prose table thead {
       background-color: #1e293b;
     }
-    
     .prose table tbody tr:nth-child(even) {
       background-color: #f8fafc;
     }
-    
     .dark .prose table tbody tr:nth-child(even) {
       background-color: #1e293b;
     }
-
     /* Pour le textarea qui s'adapte au contenu */
     .chat-textarea {
       resize: none;
-      min-height: 40px;
+      min-height: 44px;
       max-height: 200px;
       overflow-y: auto;
       line-height: 1.5;
       width: 100%;
       border-radius: 9999px;
-      padding-top: 0.75rem;
-      padding-bottom: 0.75rem;
+      padding-top: 0.625rem;
+      padding-bottom: 0.625rem;
+      padding-left: 1rem;
+      padding-right: 3rem;
+      box-sizing: border-box;
     }
-
     /* Ajustements pour le responsive */
     @media (max-width: 640px) {
       .message-bubble {
         max-width: 90%;
         padding: 0.75rem 0.875rem;
       }
-      
       .chat-textarea {
         max-height: 120px;
         font-size: 0.95rem;
-        padding-top: 0.625rem;
-        padding-bottom: 0.625rem;
+        min-height: 40px;
+        padding-top: 0.5rem;
+        padding-bottom: 0.5rem;
       }
-
       .prose table {
+        min-width: 0;
         font-size: 0.85rem;
       }
-      
       .prose table th,
       .prose table td {
         padding: 0.375rem 0.5rem;
       }
-      
       .send-button-wrapper {
-        top: 0;
-        right: 0;
-        height: 100%;
-        display: flex;
+        padding-right: 0.25rem;
+      }
+      .chat-textarea {
+        padding-right: 2.75rem;
+      }
+      #send-button {
+        width: 32px;
+        height: 32px;
+        padding: 0;
+        display: inline-flex;
         align-items: center;
-        padding-right: 0.5rem;
+        justify-content: center;
       }
+      #send-button i {
+        font-size: 0.9rem;
+      }
+    }
+    /* Container pour le textarea et le bouton pour un meilleur contrôle */
+    .input-wrapper {
+      position: relative;
+      display: flex;
+      align-items: flex-end;
+    }
+    .send-button-wrapper {
+      position: absolute;
+      right: 0.5rem;
+      bottom: 0.5rem;
     }
   </style>
 </head>
@@ -461,7 +475,7 @@
       </div>
       <!-- Indicateur de chargement pour les réponses -->
       <div id="loading-indicator" class="flex items-start space-x-2 hidden">
-        <div class="w-8 h-8 rounded-full bg-primary-100 flex items-center justify-center dark:bg-primary-900/50">
+        <div class="w-8 h-8 rounded-full bg-primary-100 flex items-center justify-center flex-shrink-0 dark:bg-primary-900/50">
           <span class="text-lg">✨</span>
         </div>
         <div class="message-bubble assistant-message bg-secondary-50 text-secondary-900 border border-secondary-200 flex items-center">
@@ -479,15 +493,9 @@
       <!-- Zone d'erreur -->
       <div id="error-message" class="bg-red-100 border-l-4 border-red-500 text-red-700 p-4 dark:bg-red-900/30 dark:text-red-300 dark:border-red-600 hidden" role="alert">
         <div class="flex">
-          <div class="flex-shrink-0">
-            <i class="fa-solid fa-circle-exclamation"></i>
-          </div>
-          <div class="ml-3">
-            <p class="text-sm font-medium" id="error-text">Le message d'erreur détaillé ira ici.</p>
-          </div>
-          <button class="ml-auto" id="dismiss-error">
-            <i class="fa-solid fa-xmark"></i>
-          </button>
+          <div class="flex-shrink-0"><i class="fa-solid fa-circle-exclamation"></i></div>
+          <div class="ml-3"><p class="text-sm font-medium" id="error-text">Le message d'erreur détaillé ira ici.</p></div>
+          <button class="ml-auto" id="dismiss-error"><i class="fa-solid fa-xmark"></i></button>
         </div>
       </div>
       <!-- Zone de prévisualisation -->
@@ -495,68 +503,73 @@
         <div id="file-preview" class="hidden"></div>
       </div>
       <!-- Barre d'options -->
-      <div class="flex items-center justify-between px-4 py-2 bg-gray-100 dark:bg-gray-800/80 text-sm text-gray-600 dark:text-gray-300">
-        <div class="flex items-center space-x-4">
-          <label class="flex items-center cursor-pointer tooltip">
-            <span class="mr-2 text-xs sm:text-sm font-medium">
-              <i class="fa-solid fa-globe mr-1.5"></i>
-              <span class="hidden sm:inline">Recherche Web</span>
-            </span>
-            <span class="toggle-switch">
-              <input type="checkbox" id="web_search_toggle" name="web_search" value="true">
-              <span class="toggle-slider"></span>
-            </span>
-            <span class="tooltip-text">Activer la recherche web pour Mariam</span>
-          </label>
-          <label class="flex items-center cursor-pointer tooltip">
-            <span class="mr-2 text-xs sm:text-sm font-medium text-accent-700 dark:text-accent-300">
-              <i class="fa-solid fa-brain mr-1.5"></i>
-              <span class="hidden sm:inline">Avancé</span>
-              <span id="advanced-cooldown-timer" class="text-xs ml-1 hidden"></span>
-            </span>
-            <span class="toggle-switch">
-              <input type="checkbox" id="advanced_reasoning_toggle" name="advanced_reasoning" value="true">
-              <span class="toggle-slider"></span>
-            </span>
-            <span class="tooltip-text">Activer le raisonnement avancé (1 fois/min)</span>
-          </label>
-        </div>
-        <div>
-          <label for="file_upload" class="cursor-pointer flex items-center text-primary-600 hover:text-primary-700 dark:text-primary-400 dark:hover:text-primary-300 tooltip">
-            <i class="fa-solid fa-paperclip"></i>
-            <span class="ml-1.5 hidden sm:inline">Fichier</span>
-            <input type="file" id="file_upload" name="file" class="hidden" accept=".txt,.pdf,.png,.jpg,.jpeg">
-            <span class="tooltip-text">Joindre un fichier (txt, pdf, image)</span>
-          </label>
-          <div id="file-chip" class="chip mt-2 hidden">
-            <i class="fa-solid fa-file chip-icon"></i>
-            <span id="file-name" class="truncate max-w-[120px]"></span>
-            <i id="clear-file" class="fa-solid fa-xmark chip-close"></i>
-          </div>
-        </div>
+      <div class="flex items-center justify-between flex-wrap gap-y-2 px-4 py-2 bg-gray-100 dark:bg-gray-800/80 text-sm text-gray-600 dark:text-gray-300">
+         <!-- Ajout du flex-wrap -->
+         <div class="flex items-center space-x-4 flex-wrap gap-y-2">
+           <label class="flex items-center cursor-pointer tooltip">
+             <span class="mr-2 text-xs sm:text-sm font-medium"><i class="fa-solid fa-globe mr-1.5"></i><span class="hidden sm:inline">Recherche Web</span></span>
+             <span class="toggle-switch">
+               <input type="checkbox" id="web_search_toggle" name="web_search" value="true">
+               <span class="toggle-slider"></span>
+             </span>
+             <span class="tooltip-text">Activer la recherche web</span>
+           </label>
+           <label class="flex items-center cursor-pointer tooltip">
+             <span class="mr-2 text-xs sm:text-sm font-medium text-accent-700 dark:text-accent-300">
+               <i class="fa-solid fa-brain mr-1.5"></i>
+               <span class="hidden sm:inline">Avancé</span>
+               <span id="advanced-cooldown-timer" class="text-xs ml-1 hidden"></span>
+             </span>
+             <span class="toggle-switch">
+               <input type="checkbox" id="advanced_reasoning_toggle" name="advanced_reasoning" value="true">
+               <span class="toggle-slider"></span>
+             </span>
+             <span class="tooltip-text">Raisonnement avancé (1 fois/min)</span>
+           </label>
+         </div>
+         <!-- Conteneur pour le fichier -->
+         <div class="flex items-center space-x-2">
+           <label for="file_upload" class="cursor-pointer flex items-center text-primary-600 hover:text-primary-700 dark:text-primary-400 dark:hover:text-primary-300 tooltip">
+             <i class="fa-solid fa-paperclip"></i>
+             <span class="ml-1.5 hidden sm:inline">Fichier</span>
+             <input type="file" id="file_upload" name="file" class="hidden" accept=".txt,.pdf,.png,.jpg,.jpeg">
+             <span class="tooltip-text">Joindre (txt, pdf, image)</span>
+           </label>
+           <div id="file-chip" class="chip hidden">
+             <i class="fa-solid fa-file chip-icon"></i>
+             <span id="file-name" class="truncate max-w-[100px] sm:max-w-[120px]"></span>
+             <i id="clear-file" class="fa-solid fa-xmark chip-close"></i>
+           </div>
+         </div>
       </div>
-      <!-- Formulaire de chat avec textarea au lieu d'input -->
+      <!-- Formulaire de chat -->
       <form id="chat-form" class="p-3 sm:p-4 bg-white dark:bg-gray-900">
-        <div class="relative">
-          <textarea 
-            id="prompt" 
-            name="prompt" 
-            class="chat-input chat-textarea w-full pl-4 pr-12 py-3 rounded-full border focus:outline-none text-sm sm:text-base" 
-            placeholder="Posez votre question à Mariam..." 
+        <div class="input-wrapper">
+          <textarea
+            id="prompt"
+            name="prompt"
+            class="chat-input chat-textarea w-full border focus:outline-none text-sm sm:text-base"
+            placeholder="Posez votre question à Mariam..."
             autocomplete="off"
             rows="1"></textarea>
-          <div class="send-button-wrapper absolute right-2 top-1/2 transform -translate-y-1/2">
-            <button 
-              type="submit" 
-              id="send-button" 
-              class="bg-primary-500 hover:bg-primary-600 disabled:bg-primary-300 text-white rounded-full p-2 transition focus:outline-none focus:ring-2 focus:ring-primary-400"
+          <div class="send-button-wrapper">
+            <button
+              type="submit"
+              id="send-button"
+              class="bg-primary-500 hover:bg-primary-600 disabled:bg-primary-300 text-white rounded-full p-2 transition focus:outline-none focus:ring-2 focus:ring-primary-400 flex items-center justify-center"
               title="Envoyer le message">
-              <i class="fa-solid fa-paper-plane"></i>
+              <i class="fa-solid fa-paper-plane text-sm"></i>
             </button>
           </div>
         </div>
         <div class="text-xs text-center mt-2 text-gray-400 dark:text-gray-500">
-          Appuyez sur <kbd class="px-1.5 py-0.5 bg-gray-100 dark:bg-gray-800 rounded border border-gray-300 dark:border-gray-700">Entrée</kbd> pour envoyer • <kbd class="px-1.5 py-0.5 bg-gray-100 dark:bg-gray-800 rounded border border-gray-300 dark:border-gray-700">Shift+Entrée</kbd> pour une nouvelle ligne
+          Appuyez sur <kbd class="px-1.5 py-0.5 bg-gray-100 dark:bg-gray-800 rounded border border-gray-300 dark:border-gray-700">Entrée</kbd>
+          <span class="hidden sm:inline"> pour envoyer</span>
+          <span class="sm:hidden"> pour une nouvelle ligne</span>
+          •
+          <kbd class="px-1.5 py-0.5 bg-gray-100 dark:bg-gray-800 rounded border border-gray-300 dark:border-gray-700">Shift+Entrée</kbd>
+          <span class="hidden sm:inline"> pour une nouvelle ligne</span>
+          <span class="sm:hidden"> pour envoyer</span>
         </div>
       </form>
     </div>
@@ -564,7 +577,7 @@
   <!-- Scripts -->
   <script>
     document.addEventListener('DOMContentLoaded', () => {
-      // Sélection des éléments et initialisation des variables
+      // Sélection des éléments
       const chatForm = document.getElementById('chat-form');
       const promptInput = document.getElementById('prompt');
       const chatMessages = document.getElementById('chat-messages');
@@ -589,9 +602,10 @@
       const API_HISTORY_ENDPOINT = '/api/history';
       const CLEAR_ENDPOINT = '/clear';
       const COOLDOWN_DURATION = 60 * 1000;
+      const MOBILE_BREAKPOINT = 640;
       let advancedToggleCooldownEndTime = 0;
       let isComposing = false;
-      
+
       // Gestion du thème
       function initializeTheme() {
         if (localStorage.theme === 'dark' || (!('theme' in localStorage) && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
@@ -611,32 +625,24 @@
       }
       themeToggleBtn.addEventListener('click', toggleTheme);
       initializeTheme();
-      
-      // Fonction pour ajuster la hauteur du textarea
+
+      // Ajuster la hauteur du textarea
       function adjustTextareaHeight(textarea) {
         textarea.style.height = 'auto';
-        const newHeight = Math.min(200, textarea.scrollHeight);
+        const style = window.getComputedStyle(textarea);
+        const maxHeight = parseInt(style.maxHeight, 10);
+        const newHeight = Math.min(maxHeight || 200, textarea.scrollHeight);
         textarea.style.height = newHeight + 'px';
-        
-        // Ajuste la position du bouton d'envoi
-        const sendButtonWrapper = document.querySelector('.send-button-wrapper');
-        if (sendButtonWrapper) {
-          if (window.innerWidth <= 640) {
-            sendButtonWrapper.style.top = '';
-          } else {
-            sendButtonWrapper.style.top = (newHeight / 2) + 'px';
-          }
-        }
       }
-      
+
       // Défilement vers le bas
       function scrollToBottom(smooth = true) {
         setTimeout(() => {
           chatMessages.scrollTo({ top: chatMessages.scrollHeight, behavior: smooth ? 'smooth' : 'auto' });
         }, 50);
       }
-      
-      // Affichage du chargement
+
+      // Affichage de l'indicateur de chargement
       function showLoading(show) {
         if (show) {
           loadingIndicator.classList.remove('hidden');
@@ -648,40 +654,51 @@
         sendButton.disabled = show;
         promptInput.disabled = show;
         fileUpload.disabled = show;
-        clearFileButton.disabled = show;
+        if (show) {
+          clearFileButton.style.pointerEvents = 'none';
+          clearFileButton.style.opacity = '0.5';
+        } else {
+          clearFileButton.style.pointerEvents = 'auto';
+          clearFileButton.style.opacity = '0.7';
+        }
       }
-      
+
       // Affichage des erreurs
       function displayError(message) {
         errorTextP.textContent = message || "Une erreur inconnue est survenue.";
         errorMessageDiv.classList.remove('hidden');
-        errorMessageDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
       }
       dismissErrorBtn.addEventListener('click', () => { errorMessageDiv.classList.add('hidden'); });
-      
+
       // Ajout d'un message dans le chat
       function addMessageToChat(role, content, isHtml = false) {
         errorMessageDiv.classList.add('hidden');
         const messageWrapper = document.createElement('div');
-        messageWrapper.classList.add('flex', role === 'user' ? 'justify-end' : 'justify-start');
-        let html = '';
+        messageWrapper.classList.add('flex', 'w-full', role === 'user' ? 'justify-end' : 'justify-start');
+
+        let messageContentHtml = '';
+        if (isHtml) {
+          messageContentHtml = content;
+        } else {
+          messageContentHtml = `<p class="text-sm sm:text-base whitespace-pre-wrap">${escapeHtml(content)}</p>`;
+        }
+
+        let bubbleHtml = '';
         if (role === 'user') {
-          html = `
-            <div class="flex items-start space-x-2 max-w-[85%]">
-              <div class="message-bubble user-message">
-                <p class="text-sm sm:text-base whitespace-pre-wrap break-words">${escapeHtml(content)}</p>
-              </div>
+          bubbleHtml = `
+            <div class="message-bubble user-message">
+              ${messageContentHtml}
             </div>
           `;
         } else {
-          html = `
+          bubbleHtml = `
             <div class="flex items-start space-x-2 max-w-[85%]">
               <div class="w-8 h-8 rounded-full bg-primary-100 flex items-center justify-center flex-shrink-0 dark:bg-primary-900/50">
                 <span class="text-lg">✨</span>
               </div>
               <div class="message-bubble assistant-message bg-secondary-50 text-secondary-900 border border-secondary-200 relative">
                 <div class="prose prose-sm sm:prose-base max-w-none dark:prose-invert">
-                  ${isHtml ? content : escapeHtml(content)}
+                  ${messageContentHtml}
                 </div>
                 <button class="copy-btn text-xs bg-white/90 dark:bg-gray-800/90 hover:bg-gray-100 dark:hover:bg-gray-700 py-1 px-2 rounded text-gray-600 dark:text-gray-300 flex items-center">
                   <i class="fa-regular fa-copy mr-1"></i> Copier
@@ -690,39 +707,70 @@
             </div>
           `;
         }
-        messageWrapper.innerHTML = html;
-        
-        // Activer les boutons de copie sur les nouveaux messages
+        messageWrapper.innerHTML = bubbleHtml;
+
+        // Activation du bouton de copie
         const copyBtns = messageWrapper.querySelectorAll('.copy-btn');
         copyBtns.forEach(btn => {
           btn.addEventListener('click', function() {
-            const textToCopy = this.closest('.message-bubble').querySelector('.prose').innerText;
+            const textToCopy = this.closest('.message-bubble').querySelector('.prose').innerText || this.closest('.message-bubble').innerText;
             navigator.clipboard.writeText(textToCopy).then(() => {
               const originalText = this.innerHTML;
               this.innerHTML = '<i class="fa-solid fa-check mr-1"></i> Copié';
+              setTimeout(() => { this.innerHTML = originalText; }, 2000);
+            }).catch(err => console.error('Copy failed:', err));
+          });
+        });
+
+        // Activation de la copie pour les blocs de code
+        const codeBlocks = messageWrapper.querySelectorAll('pre');
+        codeBlocks.forEach(pre => {
+          const code = pre.querySelector('code');
+          if (!code) return;
+          if (pre.querySelector('.code-copy-btn')) return;
+          const copyButton = document.createElement('button');
+          copyButton.innerHTML = '<i class="fa-regular fa-copy"></i>';
+          copyButton.className = 'code-copy-btn p-1.5 bg-gray-200/50 dark:bg-gray-700/50 rounded text-gray-600 dark:text-gray-300 hover:bg-gray-300/70 dark:hover:bg-gray-600/70 tooltip';
+          copyButton.setAttribute('aria-label', 'Copier le code');
+          const tooltipText = document.createElement('span');
+          tooltipText.className = 'tooltip-text !text-xs';
+          tooltipText.textContent = 'Copier le code';
+          copyButton.appendChild(tooltipText);
+          copyButton.addEventListener('click', () => {
+            navigator.clipboard.writeText(code.innerText).then(() => {
+              tooltipText.textContent = 'Copié!';
+              copyButton.innerHTML = '<i class="fa-solid fa-check"></i>';
               setTimeout(() => {
-                this.innerHTML = originalText;
+                copyButton.innerHTML = '<i class="fa-regular fa-copy"></i>';
+                copyButton.appendChild(tooltipText);
+                tooltipText.textContent = 'Copier le code';
               }, 2000);
+            }).catch(err => {
+              tooltipText.textContent = 'Erreur copie';
+              console.error('Failed to copy code: ', err);
+              setTimeout(() => { tooltipText.textContent = 'Copier le code'; }, 2000);
             });
           });
+          pre.appendChild(copyButton);
         });
-        
+
         chatMessages.insertBefore(messageWrapper, loadingIndicator);
         scrollToBottom();
       }
       function escapeHtml(unsafe) {
-        return unsafe.replace(/&/g, "&amp;")
-                     .replace(/</g, "&lt;")
-                     .replace(/>/g, "&gt;")
-                     .replace(/"/g, "&quot;")
-                     .replace(/'/g, "&#039;");
+        return unsafe
+          .replace(/&/g, "&amp;")
+          .replace(/</g, "&lt;")
+          .replace(/>/g, "&gt;")
+          .replace(/"/g, "&quot;")
+          .replace(/'/g, "&#039;");
       }
-      
-      // Gestion du cooldown du mode avancé
+
+      // Gestion du cooldown pour le raisonnement avancé
       function startAdvancedCooldownTimer() {
         advancedToggle.disabled = true;
         advancedToggleCooldownEndTime = Date.now() + COOLDOWN_DURATION;
-        const updateTimer = () => {
+        const intervalId = setInterval(() => {
           const now = Date.now();
           if (now >= advancedToggleCooldownEndTime) {
             clearInterval(intervalId);
@@ -734,26 +782,30 @@
             advancedCooldownTimerSpan.textContent = `(${remainingSeconds}s)`;
             advancedCooldownTimerSpan.classList.remove('hidden');
           }
-        };
-        const intervalId = setInterval(updateTimer, 1000);
-        updateTimer();
+        }, 1000);
+        const remainingSeconds = Math.ceil((advancedToggleCooldownEndTime - Date.now()) / 1000);
+        advancedCooldownTimerSpan.textContent = `(${remainingSeconds}s)`;
+        advancedCooldownTimerSpan.classList.remove('hidden');
       }
-      
+
       // Chargement de l'historique du chat
       async function loadChatHistory() {
-        historyLoadingIndicator.style.display = 'block';
+        historyLoadingIndicator.style.display = 'flex';
         try {
           const response = await fetch(API_HISTORY_ENDPOINT);
           if (!response.ok) {
             let errorMsg = `Erreur serveur (${response.status})`;
-            try { const errData = await response.json(); errorMsg = errData.error || errorMsg; } catch (e) {}
+            try {
+              const errData = await response.json();
+              errorMsg = errData.error || errorMsg;
+            } catch (e) {}
             throw new Error(errorMsg);
           }
           const data = await response.json();
+          const messagesToRemove = chatMessages.querySelectorAll(':scope > *:not(#loading-indicator)');
+          messagesToRemove.forEach(el => el.remove());
+          loadingIndicator.classList.add('hidden');
           if (data.success && Array.isArray(data.history)) {
-            chatMessages.innerHTML = '';
-            chatMessages.appendChild(loadingIndicator);
-            loadingIndicator.classList.add('hidden');
             if (data.history.length === 0) {
               addMessageToChat('assistant', "Bonjour ! Je suis Mariam, votre assistant IA. Comment puis-je vous aider aujourd'hui ?", true);
             } else {
@@ -764,26 +816,29 @@
             }
             scrollToBottom(false);
           } else {
-            throw new Error(data.error || "Format de réponse invalide.");
+            throw new Error(data.error || "Format de réponse invalide pour l'historique.");
           }
         } catch (error) {
-          chatMessages.innerHTML = '';
-          chatMessages.appendChild(loadingIndicator);
-          loadingIndicator.classList.add('hidden');
           displayError(`Impossible de charger l'historique: ${error.message}`);
+          if (chatMessages.querySelectorAll(':scope > *:not(#loading-indicator):not(#history-loading)').length === 0) {
+            addMessageToChat('assistant', "Bonjour ! Je suis Mariam. Je n'ai pas pu charger notre conversation précédente. Comment puis-je vous aider ?", true);
+          }
         } finally {
           historyLoadingIndicator.remove();
           promptInput.focus();
+          adjustTextareaHeight(promptInput);
         }
       }
-      
+
       // Gestion des fichiers
       function clearFileInput() {
         fileUpload.value = '';
         fileChip.classList.add('hidden');
+        fileNameSpan.textContent = '';
+        fileNameSpan.title = '';
+        filePreview.innerHTML = '';
         filePreview.classList.add('hidden');
         previewArea.classList.add('hidden');
-        filePreview.innerHTML = '';
       }
       fileUpload.addEventListener('change', () => {
         if (fileUpload.files.length > 0) {
@@ -792,27 +847,31 @@
           fileNameSpan.textContent = name;
           fileNameSpan.title = name;
           fileChip.classList.remove('hidden');
+          filePreview.innerHTML = '';
           if (file.type.startsWith('image/')) {
             const reader = new FileReader();
             reader.onload = (e) => {
               filePreview.innerHTML = `
                 <div class="file-preview">
-                  <img src="${e.target.result}" alt="Prévisualisation de l'image">
-                </div>
-              `;
+                  <img src="${e.target.result}" alt="Prévisualisation: ${escapeHtml(name)}">
+                </div>`;
+              filePreview.classList.remove('hidden');
+              previewArea.classList.remove('hidden');
+            };
+            reader.onerror = () => {
+              filePreview.innerHTML = `<p class="text-red-500 text-xs text-center p-2">Erreur lecture image</p>`;
               filePreview.classList.remove('hidden');
               previewArea.classList.remove('hidden');
             };
             reader.readAsDataURL(file);
           } else {
             filePreview.innerHTML = `
-              <div class="flex items-center justify-center py-4">
-                <div class="bg-gray-100 dark:bg-gray-800 p-4 rounded-lg text-center">
-                  <i class="fa-solid ${getFileIcon(file.type)} text-3xl text-gray-600 dark:text-gray-300 mb-2"></i>
-                  <p class="text-sm text-gray-500 dark:text-gray-400">${formatFileSize(file.size)}</p>
+              <div class="flex items-center justify-center p-3">
+                <div class="bg-gray-100 dark:bg-gray-800 p-3 rounded-lg text-center">
+                  <i class="fa-solid ${getFileIcon(file.type)} text-3xl text-gray-500 dark:text-gray-400 mb-2"></i>
+                  <p class="text-xs text-gray-500 dark:text-gray-400">${formatFileSize(file.size)}</p>
                 </div>
-              </div>
-            `;
+              </div>`;
             filePreview.classList.remove('hidden');
             previewArea.classList.remove('hidden');
           }
@@ -821,36 +880,53 @@
         }
       });
       function getFileIcon(fileType) {
+        if (!fileType) return 'fa-file';
         if (fileType.includes('pdf')) return 'fa-file-pdf';
         if (fileType.includes('text')) return 'fa-file-lines';
         return 'fa-file';
       }
       function formatFileSize(bytes) {
-        if (bytes < 1024) return bytes + ' octets';
-        if (bytes < 1048576) return (bytes / 1024).toFixed(1) + ' Ko';
-        return (bytes / 1048576).toFixed(1) + ' Mo';
+        if (bytes === 0) return '0 octets';
+        const k = 1024;
+        const sizes = ['octets', 'Ko', 'Mo', 'Go', 'To'];
+        const i = Math.floor(Math.log(bytes) / Math.log(k));
+        return parseFloat((bytes / Math.pow(k, i)).toFixed(1)) + ' ' + sizes[i];
       }
       clearFileButton.addEventListener('click', clearFileInput);
-      
+
       // Événements pour le textarea
-      promptInput.addEventListener('input', function() {
-        adjustTextareaHeight(this);
+      promptInput.addEventListener('input', () => {
+        adjustTextareaHeight(promptInput);
       });
-      
       promptInput.addEventListener('keydown', (e) => {
         if (isComposing) return;
-        if (e.key === 'Enter' && !e.shiftKey) {
-          e.preventDefault();
-          if (!sendButton.disabled) chatForm.dispatchEvent(new Event('submit'));
-        } else if (e.key === 'Enter' && e.shiftKey) {
-          // Laisser le comportement par défaut (nouvelle ligne)
-          setTimeout(() => adjustTextareaHeight(promptInput), 0);
+        const isMobile = window.innerWidth < MOBILE_BREAKPOINT;
+        if (e.key === 'Enter') {
+          if (isMobile && !e.shiftKey) {
+            setTimeout(() => adjustTextareaHeight(promptInput), 0);
+          } else if (!isMobile && !e.shiftKey) {
+            e.preventDefault();
+            if (!sendButton.disabled && (promptInput.value.trim() || fileUpload.files.length > 0)) {
+              chatForm.dispatchEvent(new Event('submit', { bubbles: true, cancelable: true }));
+            }
+          } else if (e.shiftKey) {
+            setTimeout(() => adjustTextareaHeight(promptInput), 0);
+            if (isMobile) {
+              e.preventDefault();
+              if (!sendButton.disabled && (promptInput.value.trim() || fileUpload.files.length > 0)) {
+                chatForm.dispatchEvent(new Event('submit', { bubbles: true, cancelable: true }));
+              }
+            }
+          }
         }
       });
-      
       promptInput.addEventListener('compositionstart', () => { isComposing = true; });
-      promptInput.addEventListener('compositionend', () => { isComposing = false; });
-      
+      promptInput.addEventListener('compositionend', () => {
+        isComposing = false;
+        setTimeout(() => adjustTextareaHeight(promptInput), 0);
+      });
+      adjustTextareaHeight(promptInput);
+
       // Soumission du formulaire
       chatForm.addEventListener('submit', async (e) => {
         e.preventDefault();
@@ -858,15 +934,15 @@
         const file = fileUpload.files[0];
         const useWebSearch = webSearchToggle.checked;
         const useAdvanced = advancedToggle.checked;
+        if (sendButton.disabled) return;
         if (!prompt && !file) {
-          displayError("Veuillez entrer un message ou sélectionner un fichier.");
           promptInput.focus();
           return;
         }
         errorMessageDiv.classList.add('hidden');
         if (useAdvanced) {
           const now = Date.now();
-          if (now < advancedToggleCooldownEndTime) {
+          if (advancedToggleCooldownEndTime > 0 && now < advancedToggleCooldownEndTime) {
             const remainingSeconds = Math.ceil((advancedToggleCooldownEndTime - now) / 1000);
             displayError(`Le raisonnement avancé est disponible dans ${remainingSeconds} seconde(s).`);
             return;
@@ -874,129 +950,143 @@
         }
         let userMessageText = prompt;
         if (file && file.name) {
-          userMessageText = prompt ? `${prompt}` : `[Fichier joint: ${file.name}]`;
+          userMessageText = prompt ? `${prompt}\n[Fichier: ${file.name}]` : `[Fichier joint: ${file.name}]`;
         }
         addMessageToChat('user', userMessageText);
         const formData = new FormData();
         formData.append('prompt', prompt);
         formData.append('web_search', useWebSearch);
-        if (file) { formData.append('file', file); }
         formData.append('advanced_reasoning', useAdvanced);
-        showLoading(true);
+        if (file) {
+          formData.append('file', file);
+        }
         promptInput.value = '';
-        promptInput.style.height = 'auto'; // Réinitialiser la hauteur du textarea
+        adjustTextareaHeight(promptInput);
         clearFileInput();
-        advancedToggle.checked = false;
-        if (useAdvanced) startAdvancedCooldownTimer();
+        if (useAdvanced) {
+          startAdvancedCooldownTimer();
+          advancedToggle.checked = false;
+        }
+        webSearchToggle.checked = false;
+        showLoading(true);
         try {
           const response = await fetch(API_CHAT_ENDPOINT, { method: 'POST', body: formData });
           const data = await response.json();
-          if (!response.ok) throw new Error(data.error || `Erreur serveur: ${response.status}`);
+          if (!response.ok) {
+            throw new Error(data.error || `Erreur serveur: ${response.status} ${response.statusText}`);
+          }
           if (data.success && data.message) {
             addMessageToChat('assistant', data.message, true);
           } else {
-            throw new Error(data.error || "Réponse invalide du serveur.");
+            throw new Error(data.error || "Réponse invalide ou vide du serveur.");
           }
         } catch (error) {
-          displayError(error.message);
+          console.error("Chat Error:", error);
+          addMessageToChat('assistant', `<p class="text-red-600 dark:text-red-400">Désolé, une erreur est survenue :<br>${escapeHtml(error.message)}</p>`, true);
         } finally {
           showLoading(false);
           promptInput.focus();
         }
       });
-      
+
       // Effacement de la conversation
       clearForm.addEventListener('submit', async (e) => {
         e.preventDefault();
         const confirmDialog = document.createElement('div');
-        confirmDialog.className = 'fixed inset-0 bg-black/50 flex items-center justify-center z-50';
+        confirmDialog.className = 'fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4';
         confirmDialog.innerHTML = `
-          <div class="bg-white dark:bg-gray-800 p-6 rounded-lg shadow-xl max-w-sm mx-4 animate-[message-fade-in_0.2s_ease-out]">
+          <div class="bg-white dark:bg-gray-800 p-6 rounded-lg shadow-xl max-w-sm w-full animate-[message-fade-in_0.2s_ease-out]">
             <h3 class="text-lg font-semibold mb-3 text-gray-900 dark:text-gray-100">Confirmer l'effacement</h3>
-            <p class="text-gray-600 dark:text-gray-300 mb-4">Êtes-vous sûr de vouloir effacer toute la conversation ?</p>
+            <p class="text-sm text-gray-600 dark:text-gray-300 mb-5">Êtes-vous sûr de vouloir effacer toute la conversation ? Cette action est irréversible.</p>
             <div class="flex justify-end space-x-3">
-              <button id="cancel-clear" class="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-700 rounded hover:bg-gray-200 dark:hover:bg-gray-600 transition-colors">
+              <button type="button" id="cancel-clear" class="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-700 rounded hover:bg-gray-200 dark:hover:bg-gray-600 transition-colors focus:outline-none focus:ring-2 focus:ring-gray-400">
                 Annuler
               </button>
-              <button id="confirm-clear" class="px-4 py-2 text-sm font-medium text-white bg-red-500 rounded hover:bg-red-600 transition-colors">
+              <button type="button" id="confirm-clear" class="px-4 py-2 text-sm font-medium text-white bg-red-600 rounded hover:bg-red-700 transition-colors focus:outline-none focus:ring-2 focus:ring-red-500">
                 Effacer
               </button>
             </div>
           </div>
         `;
-        document.body.appendChild(confirmDialog);
-        document.body.classList.add('overflow-hidden');
-        document.getElementById('cancel-clear').addEventListener('click', () => {
-          document.body.removeChild(confirmDialog);
-          document.body.classList.remove('overflow-hidden');
-        });
-        document.getElementById('confirm-clear').addEventListener('click', async () => {
-          document.body.removeChild(confirmDialog);
-          document.body.classList.remove('overflow-hidden');
-          const originalButtonText = e.target.querySelector('button').innerHTML;
-          e.target.querySelector('button').innerHTML = '<i class="fa-solid fa-spinner fa-spin"></i>';
-          e.target.querySelector('button').disabled = true;
+        const closeModal = () => {
+          if (document.body.contains(confirmDialog)) {
+            document.body.removeChild(confirmDialog);
+            document.body.style.overflow = '';
+          }
+        };
+        confirmDialog.querySelector('#cancel-clear').addEventListener('click', closeModal);
+        confirmDialog.querySelector('#confirm-clear').addEventListener('click', async () => {
+          closeModal();
+          const clearButton = e.target.querySelector('button[type="submit"]');
+          const originalButtonContent = clearButton.innerHTML;
+          clearButton.disabled = true;
+          clearButton.innerHTML = '<i class="fa-solid fa-spinner fa-spin mr-1.5"></i><span class="hidden sm:inline">Effacement...</span>';
           try {
-            const response = await fetch(CLEAR_ENDPOINT, { method: 'POST', headers: { 'X-Requested-With': 'XMLHttpRequest' } });
+            const response = await fetch(CLEAR_ENDPOINT, { method: 'POST' });
             const data = await response.json();
             if (response.ok && data.success) {
-              chatMessages.innerHTML = '';
-              chatMessages.appendChild(loadingIndicator);
-              loadingIndicator.classList.add('hidden');
-              addMessageToChat('assistant', "Conversation effacée. Comment puis-je vous aider ?", true);
+              const messagesToRemove = chatMessages.querySelectorAll(':scope > *:not(#loading-indicator)');
+              messagesToRemove.forEach(el => el.remove());
+              addMessageToChat('assistant', "Conversation effacée. Comment puis-je vous aider maintenant ?", true);
               errorMessageDiv.classList.add('hidden');
             } else {
               throw new Error(data.error || "Impossible d'effacer la conversation.");
             }
           } catch (error) {
+            console.error("Clear Error:", error);
             displayError(`Erreur lors de l'effacement: ${error.message}`);
           } finally {
-            e.target.querySelector('button').innerHTML = originalButtonText;
-            e.target.querySelector('button').disabled = false;
+            clearButton.innerHTML = originalButtonContent;
+            clearButton.disabled = false;
             promptInput.focus();
           }
         });
+        document.body.appendChild(confirmDialog);
+        document.body.style.overflow = 'hidden';
+        confirmDialog.querySelector('#cancel-clear').focus();
       });
-      
-      // Init
+
+      // Initialisation
       loadChatHistory();
-      adjustTextareaHeight(promptInput);
-      
-      // Gérer les changements de taille de l'écran
-      window.addEventListener('resize', () => {
-        adjustTextareaHeight(promptInput);
-      });
-      
-      // Observer pour les tableaux Markdown et ajouter une classe spéciale si nécessaire
+
+      // Observer pour les tableaux Markdown
       const observeMarkdownTables = () => {
         const observer = new MutationObserver(mutations => {
           mutations.forEach(mutation => {
-            if (mutation.type === 'childList') {
-              const tables = document.querySelectorAll('.prose table:not(.markdown-enhanced)');
-              tables.forEach(table => {
-                table.classList.add('markdown-enhanced');
-                const wrapper = document.createElement('div');
-                wrapper.className = 'overflow-x-auto';
-                table.parentNode.insertBefore(wrapper, table);
-                wrapper.appendChild(table);
+            if (mutation.addedNodes.length) {
+              mutation.addedNodes.forEach(node => {
+                if (node.nodeType === 1) {
+                  const tables = node.matches('.prose table') ? [node] : node.querySelectorAll('.prose table');
+                  tables.forEach(table => {
+                    if (!table.closest('.table-wrapper')) {
+                      const wrapper = document.createElement('div');
+                      wrapper.className = 'table-wrapper';
+                      table.parentNode.insertBefore(wrapper, table);
+                      wrapper.appendChild(table);
+                    }
+                  });
+                }
               });
             }
           });
         });
-        
         observer.observe(chatMessages, { childList: true, subtree: true });
       };
-      
       observeMarkdownTables();
-      
+
+      // Gestion du changement de thème selon le système
       const prefersDarkScheme = window.matchMedia('(prefers-color-scheme: dark)');
-      prefersDarkScheme.addEventListener('change', (e) => {
-        if (!localStorage.theme) {
-          if (e.matches) { document.documentElement.classList.add('dark'); }
-          else { document.documentElement.classList.remove('dark'); }
+      const handleSchemeChange = (e) => {
+        if (!localStorage.getItem('theme')) {
+          if (e.matches) {
+            document.documentElement.classList.add('dark');
+          } else {
+            document.documentElement.classList.remove('dark');
+          }
         }
-      });
+      };
+      prefersDarkScheme.addEventListener('change', handleSchemeChange);
     });
   </script>
 </body>
-</html>
+</html>