/* modern-chat.css - Version Mobile Responsive */
:root {
  /* Couleurs principales */
  --primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-light: #667eea;
  --primary-dark: #764ba2;
  --secondary: #f8fafc;
  --accent: #3b82f6;
  
  /* Couleurs de texte */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  
  /* Couleurs de fond */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #e2e8f0;
  
  /* Messages */
  --msg-bot: #ffffff;
  --msg-user: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --msg-user-text: #ffffff;
  
  /* Réactions */
  --reaction-like: rgba(34, 197, 94, 0.1);
  --reaction-like-border: rgba(34, 197, 94, 0.3);
  --reaction-dislike: rgba(239, 68, 68, 0.1);
  --reaction-dislike-border: rgba(239, 68, 68, 0.3);
  
  /* Bordures et ombres */
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Rayons de bordure */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 50%;
  
  /* Transitions */
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;
  
  /* Espacements adaptatifs */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--text-primary);
  height: 100vh;
  height: 100dvh; /* Hauteur dynamique pour mobile */
  display: flex;
  justify-content: center;
  align-items: center;
  line-height: 1.6;
  font-weight: 400;
  overflow: hidden;
  padding: 0;
  margin: 0;
}

/* Container principal - Responsive */
.chat-container {
  width: 100%;
  max-width: 1000px;
  height: 100vh;
  height: 100dvh; /* Hauteur dynamique */
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  margin: 0;
}

/* Header moderne - Responsive */
.chat-header {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}

.chat-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 0;
  flex: 1;
}

.bot-avatar-container {
  position: relative;
  flex-shrink: 0;
}

.bot-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--primary-light);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.bot-avatar:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.status-indicator {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
}

.status-indicator.online {
  background: #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.bot-info {
  min-width: 0;
  flex: 1;
}

.bot-info h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bot-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.text-green {
  color: #22c55e;
  font-size: 0.5rem;
}

.user-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  flex-shrink: 0;
}

.logout-button {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.logout-button:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Bouton de partage */
.share-button {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  border: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.share-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, #128c7e 0%, #25d366 100%);
}

.share-button i {
  font-size: 0.9rem;
}

/* Zone des messages - Responsive */
.chat-messages {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  overflow-y: auto;
  overflow-x: hidden;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  position: relative;
  -webkit-overflow-scrolling: touch; /* Smooth scrolling sur iOS */
}

.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* Message de bienvenue - Responsive */
.welcome-message {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  padding: 0 var(--spacing-sm);
}

.welcome-card {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 400px;
}

.welcome-card i {
  font-size: 2rem;
  color: var(--primary-light);
  margin-bottom: var(--spacing-md);
}

.welcome-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.welcome-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Messages - Responsive */
.message {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  animation: messageSlideIn 0.4s ease-out;
  max-width: 100%;
}

@keyframes messageSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.user {
  flex-direction: row-reverse;
  justify-content: flex-start;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.message-content {
  max-width: 85%;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.message.user .message-content {
  align-items: flex-end;
}

.message-bubble {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-xl);
  position: relative;
  word-wrap: break-word;
  word-break: break-word;
  transition: var(--transition-slow);
  box-shadow: var(--shadow-sm);
  line-height: 1.5;
  max-width: 100%;
  overflow-wrap: break-word;
}

.message.bot .message-bubble {
  background: var(--msg-bot);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-xl) var(--radius-sm);
  color: var(--text-primary);
}

.message.user .message-bubble {
  background: var(--msg-user);
  color: var(--msg-user-text);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-sm) var(--radius-xl);
}

.message-bubble:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Formatage du contenu des messages */
.message-bubble p {
  margin: 0 0 0.5rem 0;
}

.message-bubble p:last-child {
  margin-bottom: 0;
}

.message-bubble strong {
  font-weight: 600;
}

.message-bubble em {
  font-style: italic;
}

.message-bubble br {
  line-height: 1.8;
}

.message-bubble .highlight {
  background: rgba(255, 235, 59, 0.3);
  padding: 0.1rem 0.2rem;
  border-radius: 0.2rem;
}

/* Réactions - Responsive */
.message-reactions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  justify-content: flex-start;
  flex-wrap: wrap;
}

.message.user .message-reactions {
  justify-content: flex-end;
}

.reaction-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px 8px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  min-height: 28px;
}

.reaction-btn:hover {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.reaction-btn.liked {
  background: var(--reaction-like);
  border-color: var(--reaction-like-border);
  color: #15803d;
}

.reaction-btn.disliked {
  background: var(--reaction-dislike);
  border-color: var(--reaction-dislike-border);
  color: #dc2626;
}

/* Bouton de partage spécial dans les réactions */
.reaction-btn.share-reaction-btn {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  border-color: rgba(37, 211, 102, 0.3);
  color: white;
  font-weight: 500;
}

.reaction-btn.share-reaction-btn:hover {
  background: linear-gradient(135deg, #128c7e 0%, #25d366 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

/* Couleurs des bulles selon les réactions */
.message-bubble.liked {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.05) 0%, rgba(34, 197, 94, 0.1) 100%);
  border-color: var(--reaction-like-border);
}

.message.user .message-bubble.liked {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.8) 0%, rgba(34, 197, 94, 0.9) 100%);
}

.message-bubble.disliked {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.1) 100%);
  border-color: var(--reaction-dislike-border);
}

.message.user .message-bubble.disliked {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.8) 0%, rgba(239, 68, 68, 0.9) 100%);
}

/* Timestamp */
.message-time {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: var(--spacing-xs);
  white-space: nowrap;
}

/* Footer moderne - Responsive */
.chat-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-primary);
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
  /* Ajustement pour les claviers virtuels sur mobile */
  padding-bottom: env(safe-area-inset-bottom, var(--spacing-md));
  /* Positionnement adaptatif pour éviter le recouvrement par le clavier */
  position: relative;
  z-index: 100;
}

/* Ajustement automatique pour le clavier virtuel */
@supports (height: 100dvh) {
  .chat-container {
    height: 100dvh;
  }
}

/* Détection du clavier virtuel */
@media (max-height: 500px) and (max-width: 768px) {
  .chat-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 2px solid var(--border);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
  }
  
  .chat-messages {
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
  }
  
  .input-container {
    max-width: 100vw;
  }
}

.input-container {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-md);
}

.textarea-wrapper {
  flex: 1;
  position: relative;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  transition: var(--transition);
  min-width: 0;
}

.textarea-wrapper:focus-within {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#message-to-send {
  width: 100%;
  min-height: 44px;
  max-height: 120px;
  padding: var(--spacing-md) var(--spacing-lg);
  padding-right: 60px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  outline: none;
  color: var(--text-primary);
  overflow-y: auto;
}

#message-to-send::placeholder {
  color: var(--text-light);
}

.char-counter {
  position: absolute;
  bottom: 8px;
  right: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--text-light);
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 1;
}

.send-btn {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.send-btn:not(:disabled):hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-lg);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--text-light);
  transform: none;
}

.send-btn i {
  font-size: 1.1rem;
}

/* Typing indicator - Responsive */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-md);
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--text-light);
  animation: typingPulse 1.4s ease-in-out infinite;
}

.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingPulse {
  0%, 60%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  30% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: var(--transition-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-content {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-xl);
  margin: var(--spacing-md);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top: 4px solid var(--primary-light);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Modal de partage */
.share-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-slow);
  padding: var(--spacing-md);
}

.share-modal.hidden {
  opacity: 0;
  pointer-events: none;
}

.share-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.share-modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  position: relative;
  z-index: 1;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.share-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--border-light);
}

.share-modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.close-modal-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.close-modal-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.share-modal-body {
  padding: var(--spacing-xl);
  overflow-y: auto;
  max-height: calc(80vh - 80px);
}

.share-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.share-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-md);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  background: var(--bg-secondary);
}

.share-option:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.share-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.share-icon.whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
}

.share-icon.telegram {
  background: linear-gradient(135deg, #0088cc 0%, #229ed9 100%);
}

.share-icon.facebook {
  background: linear-gradient(135deg, #1877f2 0%, #42a5f5 100%);
}

.share-icon.twitter {
  background: linear-gradient(135deg, #1da1f2 0%, #0d8bd9 100%);
}

.share-icon.linkedin {
  background: linear-gradient(135deg, #0077b5 0%, #00a0dc 100%);
}

.share-icon.email {
  background: linear-gradient(135deg, #ea4335 0%, #fbbc04 100%);
}

.share-icon.copy {
  background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
}

.share-icon.sms {
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.share-option span {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
}

.share-preview {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
}

.share-preview h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.share-preview-text {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-height: 150px;
  overflow-y: auto;
  white-space: pre-wrap;
  line-height: 1.4;
}

.share-options-toggle {
  margin-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toggle-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.toggle-option input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  position: relative;
  transition: var(--transition);
  background: var(--bg-primary);
}

.toggle-option input[type="checkbox"]:checked + .checkmark {
  background: var(--primary-light);
  border-color: var(--primary-light);
}

.toggle-option input[type="checkbox"]:checked + .checkmark::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
  :root {
    --spacing-sm: 0.375rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  .chat-container {
    border-radius: 0;
    box-shadow: none;
    border: none;
  }

  .chat-header {
    padding: var(--spacing-md);
  }

  .bot-avatar {
    width: 40px;
    height: 40px;
  }

  .bot-info h2 {
    font-size: 1.1rem;
  }

  .bot-info p {
    font-size: 0.8rem;
  }

  .user-name {
    display: none;
  }

  .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .logout-button {
    width: 36px;
    height: 36px;
  }

  .chat-messages {
    padding: var(--spacing-md);
  }

  .welcome-card {
    padding: var(--spacing-lg);
    margin: 0 var(--spacing-sm);
  }

  .message {
    margin-bottom: var(--spacing-md);
  }

  .message-content {
    max-width: 90%;
  }

  .message-avatar {
    width: 28px;
    height: 28px;
  }

  .message-bubble {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.95rem;
    max-width: 100%;
  }

  .chat-footer {
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom, 0px));
  }

  .input-container {
    gap: var(--spacing-sm);
  }

  #message-to-send {
    font-size: 1rem;
    padding: var(--spacing-md);
    padding-right: 50px;
    min-height: 44px;
  }

  .char-counter {
    bottom: 10px;
    right: var(--spacing-sm);
    font-size: 0.7rem;
  }

  .send-btn {
    width: 44px;
    height: 44px;
  }

  .send-btn i {
    font-size: 1rem;
  }

  .reaction-btn {
    font-size: 0.7rem;
    padding: 3px 6px;
    min-height: 26px;
  }

  /* Modal de partage responsive */
  .share-modal {
    padding: var(--spacing-sm);
  }

  .share-modal-content {
    max-height: 90vh;
  }

  .share-modal-header {
    padding: var(--spacing-md);
  }

  .share-modal-header h3 {
    font-size: 1.1rem;
  }

  .share-modal-body {
    padding: var(--spacing-md);
  }

  .share-options {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
  }

  .share-option {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .share-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }

  .share-option span {
    font-size: 0.8rem;
  }

  .share-button {
    width: 36px;
    height: 36px;
  }

  /* Menu de partage rapide sur mobile */
  .quick-share-options {
    gap: 4px;
    padding: 4px;
  }

  .quick-share-btn {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  .reaction-btn.share-reaction-btn {
    font-size: 0.7rem;
    padding: 3px 6px;
  }
}

@media screen and (max-width: 480px) {
  :root {
    --spacing-xs: 0.2rem;
    --spacing-sm: 0.3rem;
    --spacing-md: 0.6rem;
    --spacing-lg: 0.9rem;
    --spacing-xl: 1.2rem;
  }

  .header-left {
    gap: var(--spacing-sm);
  }

  .bot-info h2 {
    font-size: 1rem;
  }

  .welcome-card {
    padding: var(--spacing-md);
  }

  .welcome-card i {
    font-size: 1.5rem;
  }

  .welcome-card h3 {
    font-size: 1.1rem;
  }

  .message-content {
    max-width: 95%;
  }

  .message-bubble {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  #message-to-send {
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 45px;
  }

  .send-btn {
    width: 40px;
    height: 40px;
  }

  /* Modal de partage pour très petits écrans */
  .share-options {
    grid-template-columns: repeat(2, 1fr);
  }

  .share-option {
    padding: var(--spacing-sm);
  }

  .share-icon {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }

  .share-option span {
    font-size: 0.75rem;
  }

  .share-preview-text {
    max-height: 120px;
    font-size: 0.8rem;
  }
}

/* Support pour les appareils avec encoche (iPhone X+) */
@supports (padding: max(0px)) {
  .chat-footer {
    padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
  }
}

/* Classes pour la gestion du clavier virtuel */
body.keyboard-open {
  overflow: hidden;
}

body.keyboard-open .chat-container {
  height: 100vh;
  height: 100dvh;
}

body.keyboard-open .chat-messages {
  padding-bottom: 120px;
  scroll-behavior: smooth;
}

body.keyboard-open .chat-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-primary);
  border-top: 2px solid var(--primary-light);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(10px);
}

/* Animation fluide pour l'ouverture/fermeture du clavier */
.chat-footer {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chat-messages {
  transition: padding-bottom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Amélioration du scroll sur mobile quand le clavier est ouvert */
@media (max-width: 768px) {
  body.keyboard-open .chat-messages {
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  body.keyboard-open .message:last-child {
    margin-bottom: var(--spacing-xl);
  }
}

/* Menu de partage rapide */
.quick-share-menu {
  margin-top: var(--spacing-sm);
  animation: quickShareSlideIn 0.3s ease-out;
}

@keyframes quickShareSlideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.quick-share-options {
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.quick-share-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
  color: white;
  position: relative;
}

.quick-share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quick-share-btn.whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
}

.quick-share-btn.telegram {
  background: linear-gradient(135deg, #0088cc 0%, #229ed9 100%);
}

.quick-share-btn.email {
  background: linear-gradient(135deg, #ea4335 0%, #fbbc04 100%);
}

.quick-share-btn.copy {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

/* Tooltip pour les boutons de partage rapide */
.quick-share-btn::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  margin-bottom: 4px;
}

.quick-share-btn:hover::before {
  opacity: 1;
}

/* Animations d'entrée */
.fade-in {
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}