/**
 * Styles pour les composants de la messagerie
 * Version améliorée avec design moderne, animations fluides et effets visuels
 */

/* ============================================
   RESET ET BASE - MOBILE FIRST
   ============================================ */
html {
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important;
  overflow-y: auto;
  box-sizing: border-box;
  position: relative;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  touch-action: pan-y;
}

body {
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important;
  overflow-y: auto;
  box-sizing: border-box;
  position: relative;
  overscroll-behavior-x: none;
  touch-action: pan-y;
}

*, *::before, *::after {
  box-sizing: border-box;
}

/* Force tous les éléments à respecter les limites */
img, video, iframe, embed, object {
  max-width: 100%;
  height: auto;
}

/* Utilitaires accessibilité - lecteurs d'écran (WCAG 2.1) */
.sr-only,
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.sr-only:focus,
.visually-hidden:focus {
  width: auto !important;
  height: auto !important;
  padding: inherit !important;
  margin: inherit !important;
  overflow: visible !important;
  clip: auto !important;
  clip-path: none !important;
  white-space: normal !important;
}

/* Règle stricte pour empêcher tout débordement */
.messages-container,
.messages-container *,
.messages-container *::before,
.messages-container *::after {
  max-width: 100%;
  box-sizing: border-box;
}

/* Empêche spécifiquement le débordement horizontal - RÈGLES ULTRA STRICTES */
@media (max-width: 768px) {
  html {
    overflow-x: hidden !important;
    position: relative;
    width: 100% !important;
    max-width: 100vw !important;
  }
  
  body {
    overflow-x: hidden !important;
    position: relative;
    width: 100% !important;
    max-width: 100vw !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  
  body > * {
    max-width: 100vw !important;
    overflow-x: hidden !important;
  }
  
  .messages-container {
    width: 100% !important;
    max-width: 100vw !important;
    overflow-x: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  
  .messages-container * {
    max-width: 100% !important;
    overflow-x: hidden !important;
    box-sizing: border-box !important;
  }
  
  .messages-container .chat {
    width: 100% !important;
    max-width: 100vw !important;
    overflow-x: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  
  .chat-form {
    width: 100% !important;
    max-width: 100vw !important;
    overflow-x: hidden !important;
    overflow-y: visible !important;
    margin: 0 !important;
    padding: var(--msg-spacing-xs) var(--msg-spacing-xs) !important;
    box-sizing: border-box !important;
    display: flex !important;
    align-items: center !important;
    gap: 4px !important;
    min-height: auto !important;
    position: relative !important;
  }
  
  .chat-form > * {
    box-sizing: border-box !important;
  }
  
  .chat-form > *:not(textarea) {
    flex-shrink: 0 !important;
  }
  
  .chat-form textarea {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    max-width: calc(100vw - 120px) !important; /* Réserver de l'espace pour les boutons */
    width: 0 !important; /* Force flex à calculer la largeur */
    overflow-x: hidden !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    padding: 8px 12px !important;
    font-size: 0.875rem !important;
    min-height: 36px !important;
    max-height: 100px !important;
    border-radius: 18px !important;
  }
  
  .chat-form button,
  .chat-form .more-actions-wrapper {
    flex-shrink: 0 !important;
    width: 36px !important;
    min-width: 36px !important;
    max-width: 36px !important;
    height: 36px !important;
    min-height: 36px !important;
    box-sizing: border-box !important;
    padding: 0 !important;
    margin: 0 !important;
    border-radius: 50% !important;
    cursor: pointer !important;
    pointer-events: auto !important;
    touch-action: manipulation !important;
    -webkit-tap-highlight-color: rgba(74, 85, 104, 0.3) !important;
    position: relative !important;
    z-index: 100 !important;
    background: var(--msg-primary-gradient) !important;
    border: none !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }
  
  .chat-form button:active,
  .chat-form .more-actions-wrapper button:active {
    transform: scale(0.95) !important;
    opacity: 0.8 !important;
  }
  
  .chat-form button i,
  .chat-form .more-actions-wrapper button i {
    width: 18px !important;
    height: 18px !important;
    font-size: 18px !important;
    pointer-events: none !important;
    color: var(--msg-text-primary) !important;
  }
  
  #emojiButton,
  #moreActionsBtn {
    z-index: 101 !important;
  }
  
  .chat-messages {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: hidden !important;
    padding-left: var(--msg-spacing-sm) !important;
    padding-right: var(--msg-spacing-sm) !important;
    box-sizing: border-box !important;
  }
  
  .chat-messages * {
    max-width: 100% !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
  }
  
  .toast {
    max-width: calc(100vw - 24px) !important;
    left: 50% !important;
    right: auto !important;
    transform: translateX(-50%) !important;
    margin: 0 var(--msg-spacing-md) !important;
  }
  
  #incomingCallModal {
    max-width: calc(100vw - 32px) !important;
    left: 50% !important;
    right: auto !important;
    transform: translateX(-50%) !important;
    margin: 0 var(--msg-spacing-md) !important;
  }
}

/* ============================================
   VARIABLES CSS AMÉLIORÉES
   ============================================ */
:root {
  /* Couleurs principales - THÈME SOMBRE GRIS/NOIR */
  --msg-primary: #4a5568;
  --msg-primary-dark: #2d3748;
  --msg-primary-light: #718096;
  --msg-primary-gradient: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
  --msg-primary-glow: 0 0 20px rgba(74, 85, 104, 0.3);
  --msg-secondary: #718096;
  --msg-accent: #a0aec0;
  --msg-accent-glow: 0 0 15px rgba(160, 174, 192, 0.2);
  
  /* Couleurs de fond - THÈME SOMBRE GRIS/NOIR */
  --msg-bg-dark: #1a202c;
  --msg-bg-darker: #171923;
  --msg-bg-darkest: #0d1117;
  --msg-bg-message: #2d3748;
  --msg-bg-glass: rgba(26, 32, 44, 0.9);
  --msg-bg-glass-light: rgba(26, 32, 44, 0.7);
  --msg-bg-overlay: rgba(0, 0, 0, 0.95);
  --msg-bg-overlay-light: rgba(0, 0, 0, 0.85);
  --msg-bg-gradient: linear-gradient(135deg, #171923 0%, #1a202c 100%);
  
  /* Couleurs de texte */
  --msg-text-primary: #f7fafc;
  --msg-text-secondary: rgba(247, 250, 252, 0.8);
  --msg-text-muted: rgba(247, 250, 252, 0.6);
  --msg-text-glow: 0 0 10px rgba(74, 85, 104, 0.2);
  
  /* Bordures avec effets */
  --msg-border: rgba(74, 85, 104, 0.3);
  --msg-border-color: rgba(74, 85, 104, 0.3);
  --msg-border-light: rgba(74, 85, 104, 0.15);
  --msg-border-glow: rgba(74, 85, 104, 0.4);
  
  /* Alias pour compatibilité */
  --msg-darker-bg: var(--msg-bg-darker);
  
  /* Ombres améliorées - PLUS SOMBRES */
  --msg-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --msg-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.6);
  --msg-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.7);
  --msg-shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.8);
  --msg-shadow-glow: 0 0 20px rgba(74, 85, 104, 0.2);
  --msg-shadow-glow-strong: 0 0 30px rgba(74, 85, 104, 0.3);
  --msg-shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.4);
  
  /* Transitions améliorées */
  --msg-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --msg-transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --msg-transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --msg-transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Espacements */
  --msg-spacing-xs: 4px;
  --msg-spacing-sm: 8px;
  --msg-spacing-md: 12px;
  --msg-spacing-lg: 16px;
  --msg-spacing-xl: 24px;
  --msg-spacing-2xl: 32px;
  
  /* Tailles tactiles optimales pour mobile */
  --msg-touch-target: 44px;
  --msg-touch-target-large: 56px;
  --msg-touch-target-small: 36px; /* Pour les boutons dans le formulaire */
  
  /* Rayons de bordure */
  --msg-radius-sm: 6px;
  --msg-radius-md: 10px;
  --msg-radius-lg: 16px;
  --msg-radius-xl: 20px;
  --msg-radius-full: 999px;
  
  /* Z-index */
  --msg-z-modal: 9999;
  --msg-z-overlay: 1200;
  --msg-z-toast: 999;
  --msg-z-header: 10;
  
  /* Focus ring visible - contraste AA */
  --msg-focus-ring: 3px solid #a0aec0;
  --msg-focus-ring-offset: 3px;
  
  /* Backdrop blur */
  --msg-blur-sm: blur(4px);
  --msg-blur-md: blur(8px);
  --msg-blur-lg: blur(16px);
}

/* ============================================
   ANIMATIONS GLOBALES
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* ============================================
   MODAL D'APPEL ENTRANT - DESIGN HORIZONTAL FIN ET MODERNE
   ============================================ */
#incomingCallModal {
  display: none;
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  background: rgba(13, 17, 23, 0.98);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  padding: 0;
  border-radius: 20px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  z-index: var(--msg-z-modal);
  min-width: 320px;
  max-width: calc(100vw - 32px);
  width: auto;
  animation: slideUpModal 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(74, 85, 104, 0.2);
  box-sizing: border-box;
  margin: 0 var(--msg-spacing-md);
}

#incomingCallModal::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 32, 44, 0.6) 0%, rgba(13, 17, 23, 0.8) 100%);
  pointer-events: none;
  z-index: 0;
}

@keyframes slideUpModal {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(100px) scale(0.9);
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
    filter: blur(0);
  }
}

#incomingCallModal .caller-info {
  display: flex;
  align-items: center;
  gap: var(--msg-spacing-lg);
  padding: var(--msg-spacing-lg) var(--msg-spacing-xl);
  position: relative;
  z-index: 1;
  width: 100%;
}

#incomingCallModal .caller-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(74, 85, 104, 0.4);
  box-shadow: 
    0 4px 16px rgba(0, 0, 0, 0.4),
    0 0 0 3px rgba(74, 85, 104, 0.1);
  object-fit: cover;
  background: var(--msg-primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--msg-text-primary);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  animation: subtlePulse 3s ease-in-out infinite;
}

#incomingCallModal .caller-avatar::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  padding: 2px;
  background: linear-gradient(45deg, rgba(74, 85, 104, 0.5), rgba(160, 174, 192, 0.2));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0.6;
  z-index: -1;
}

#incomingCallModal .caller-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  position: relative;
  z-index: 1;
}

@keyframes subtlePulse {
  0%, 100% {
    box-shadow: 
      0 4px 16px rgba(0, 0, 0, 0.4),
      0 0 0 3px rgba(74, 85, 104, 0.1);
  }
  50% {
    box-shadow: 
      0 6px 20px rgba(74, 85, 104, 0.3),
      0 0 0 4px rgba(74, 85, 104, 0.15);
  }
}

#incomingCallModal .caller-details {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#incomingCallModal #callerName {
  font-size: 1.1em;
  color: var(--msg-text-primary);
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.2px;
}

#incomingCallModal .caller-status {
  font-size: 0.85em;
  color: var(--msg-text-secondary);
  font-weight: 400;
  margin: 0;
  opacity: 0.7;
  white-space: nowrap;
}

#incomingCallModal .caller-emoji {
  display: none;
}

#incomingCallModal .call-buttons {
  display: flex;
  gap: var(--msg-spacing-md);
  align-items: center;
  padding: 0 var(--msg-spacing-xl) var(--msg-spacing-lg) var(--msg-spacing-xl);
  position: relative;
  z-index: 1;
  justify-content: flex-end;
}

#incomingCallModal .call-button {
  padding: 10px 20px;
  color: var(--msg-text-primary);
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 100px;
  min-height: 44px;
  font-size: 0.9rem;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  position: relative;
  overflow: hidden;
  text-transform: none;
  letter-spacing: 0.2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  flex-shrink: 0;
}

#incomingCallModal .call-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  transform: translate(-50%, -50%);
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#incomingCallModal .call-button:hover::before,
#incomingCallModal .call-button:active::before {
  width: 300px;
  height: 300px;
}

#incomingCallModal .call-button:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 4px;
}

#incomingCallModal .call-button-accept {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 
    0 4px 12px rgba(16, 185, 129, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

#incomingCallModal .call-button-accept:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  transform: translateY(-2px);
  box-shadow: 
    0 6px 16px rgba(16, 185, 129, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

#incomingCallModal .call-button-accept:active,
#incomingCallModal .call-button-accept-audio:active,
#incomingCallModal .call-button-reject:active {
  transform: translateY(0) scale(0.98);
}

#incomingCallModal .call-button-accept-audio {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}
#incomingCallModal .call-button-accept-audio:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  transform: translateY(-2px);
}

#incomingCallModal .call-button-reject {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 
    0 4px 12px rgba(239, 68, 68, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

#incomingCallModal .call-button-reject:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  transform: translateY(-2px);
  box-shadow: 
    0 6px 16px rgba(239, 68, 68, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

#incomingCallModal .call-button-reject:active {
  transform: translateY(0);
}

/* ============================================
   BANDEAU D'APPEL
   ============================================ */
#callStatusBanner {
  display: none;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--msg-bg-gradient);
  -webkit-backdrop-filter: var(--msg-blur-sm);
  backdrop-filter: var(--msg-blur-sm);
  color: var(--msg-text-primary);
  padding: var(--msg-spacing-md);
  text-align: center;
  border-bottom: 1px solid var(--msg-border);
  font-weight: 500;
  box-shadow: var(--msg-shadow-md);
  animation: slideInRight 0.3s ease;
}
#callStatusBanner .call-duration {
  margin-left: 8px;
  font-variant-numeric: tabular-nums;
  color: var(--msg-text-secondary, #a29bfe);
  font-size: 0.95em;
}
.call-quality {
  margin-left: 4px;
  font-size: 1em;
  opacity: 0.9;
}
.call-quality.poor { opacity: 1; }
.call-quality.good { opacity: 1; }
.call-quality.excellent { opacity: 1; }

/* Prévisualisation appel entrant */
.caller-preview-video {
  width: 120px;
  height: 160px;
  border-radius: 12px;
  overflow: hidden;
  margin: 0 auto 12px;
  border: 2px solid rgba(255,255,255,0.2);
}
.caller-preview-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.caller-preview-label {
  display: block;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.6);
  text-align: center;
  margin-top: 4px;
}

/* Messages pendant appel */
.call-chat-panel {
  position: fixed;
  bottom: 100px;
  right: 16px;
  width: 280px;
  max-height: 300px;
  background: rgba(0,0,0,0.9);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.15);
  z-index: 130;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.call-chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-weight: 600;
}
.call-chat-header button {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0 4px;
}
.call-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  font-size: 0.9rem;
  max-height: 160px;
}
.call-chat-messages .call-msg {
  margin-bottom: 8px;
  padding: 6px 10px;
  border-radius: 10px;
  word-break: break-word;
}
.call-chat-messages .call-msg.from-me { background: rgba(108,92,231,0.4); margin-left: 20px; }
.call-chat-messages .call-msg.from-other { background: rgba(255,255,255,0.1); margin-right: 20px; }
.call-chat-form {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.call-chat-form input {
  flex: 1;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 0.9rem;
}
.call-chat-form button {
  padding: 8px 14px;
  border-radius: 10px;
  border: none;
  background: #6c5ce7;
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
}
.call-chat-toggle, .call-minimize-btn {
  position: fixed;
  bottom: 90px;
  right: 16px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  z-index: 115;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.call-minimize-btn { right: 72px; }

.call-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--msg-spacing-lg);
  justify-content: center;
  align-items: center;
}
.call-reactions-bar-inline {
  display: flex;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(0,0,0,0.3);
  border-radius: 20px;
  align-items: center;
}
.call-reactions-bar-inline .call-reaction-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  font-size: 1.1rem;
  min-width: 36px;
  min-height: 36px;
}

/* Réactions en direct (legacy, conservé pour overlay) */
.call-reactions-bar {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(0,0,0,0.6);
  border-radius: 24px;
  z-index: 115;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.call-reaction-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.15);
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 0.2s;
}
.call-reaction-btn:hover { transform: scale(1.15); }
.call-reaction-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  font-size: 4rem;
  animation: reactionPop 1.5s ease forwards;
  pointer-events: none;
  z-index: 50;
}
@keyframes reactionPop {
  0% { opacity: 1; transform: translate(-50%,-50%) scale(0.5); }
  70% { opacity: 1; transform: translate(-50%,-50%) scale(1.3); }
  100% { opacity: 0; transform: translate(-50%,-50%) scale(1.5); }
}

.call-minimized #minimizedVideo { width: 100%; height: 60px; object-fit: cover; }
.call-minimized .call-minimized-info { padding: 4px 8px; font-size: 0.75rem; color: #fff; display: flex; justify-content: space-between; }
.call-minimized #expandCallBtn { position: absolute; top: 4px; right: 4px; width: 24px; height: 24px; border: none; background: rgba(255,255,255,0.2); color: #fff; border-radius: 50%; cursor: pointer; font-size: 0.8rem; }

.tab-panel-header { display: flex; align-items: center; gap: 8px; }
.call-history-btn:hover { color: var(--msg-primary); }

/* ============================================
   CONTENEUR D'APPEL VIDÉO - DESIGN ULTRA MODERNE
   ============================================ */
#videoCallContainer {
  animation: fadeInCallModern var(--msg-transition-slow) ease forwards;
  opacity: 0;
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 17, 23, 0.98) 0%, rgba(23, 25, 35, 0.95) 100%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  z-index: 9999;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

@keyframes fadeInCallModern {
  from {
    opacity: 0;
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
  }
  to {
    opacity: 1;
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    backdrop-filter: blur(30px) saturate(180%);
  }
}

#videoCallContainer.show {
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
}

/* Animation de fin d'appel */
#videoCallContainer.ending {
  animation: fadeOutCall 0.6s ease forwards;
}

/* Mode appel audio : afficher avatar au lieu de vidéo */
#videoCallContainer.call-audio-mode .video-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
#videoCallContainer.call-audio-mode #localVideo,
#videoCallContainer.call-audio-mode #remoteVideo {
  display: none !important;
}
#videoCallContainer.call-audio-mode .call-audio-avatar {
  display: flex !important;
}
.call-audio-avatar {
  display: none;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: white;
  font-weight: 600;
  box-shadow: 0 8px 32px rgba(108, 92, 231, 0.4);
}

/* Dropdown choix type d'appel */
.call-header-wrapper {
  position: relative;
  display: inline-flex;
  overflow: visible;
}
.call-type-dropdown {
  position: fixed;
  margin-top: 0;
  background: var(--msg-darker-bg, #1a1a1a);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  border: 1px solid var(--msg-border-color, #333);
  padding: 8px;
  min-width: 160px;
  z-index: 10001;
  display: none;
}
.call-type-dropdown.open {
  display: flex !important;
  flex-direction: column;
  gap: 4px;
}
.call-type-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: none;
  border: none;
  border-radius: 8px;
  color: #fff;
  cursor: pointer;
  font-size: 0.95rem;
  text-align: left;
  transition: background 0.2s;
}
.call-type-option:hover {
  background: rgba(108, 92, 231, 0.2);
}
.call-type-option i {
  width: 20px;
  height: 20px;
  color: #4caf50;
}

.call-type-option:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 2px;
}

/* Bouton d'appel dans le header - zone tactile minimale */
#callHeaderBtn {
  min-width: var(--msg-touch-target);
  min-height: var(--msg-touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@keyframes fadeOutCall {
  from {
    opacity: 1;
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    backdrop-filter: blur(30px) saturate(180%);
    transform: scale(1);
  }
  to {
    opacity: 0;
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
    transform: scale(0.95);
  }
}

/* ============================================
   OVERLAY D'ATTENTE PENDANT L'APPEL
   ============================================ */
.call-waiting-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 17, 23, 0.95) 0%, rgba(23, 25, 35, 0.92) 100%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.call-waiting-overlay.show {
  opacity: 1;
  visibility: visible;
  animation: fadeInWaiting 0.4s ease forwards;
}

@keyframes fadeInWaiting {
  from {
    opacity: 0;
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
  }
  to {
    opacity: 1;
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    backdrop-filter: blur(20px) saturate(150%);
  }
}

.waiting-content {
  text-align: center;
  color: var(--msg-text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--msg-spacing-lg);
}

.waiting-spinner {
  width: 80px;
  height: 80px;
  border: 4px solid rgba(74, 85, 104, 0.3);
  border-top-color: var(--msg-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  position: relative;
}

.waiting-spinner::after {
  content: '';
  position: absolute;
  inset: -4px;
  border: 4px solid transparent;
  border-top-color: var(--msg-primary-light);
  border-radius: 50%;
  animation: spin 1.5s linear infinite reverse;
  opacity: 0.5;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.waiting-text {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--msg-text-primary);
  margin: 0;
  letter-spacing: 0.5px;
  animation: pulseText 2s ease-in-out infinite;
}

.waiting-subtext {
  font-size: 1rem;
  color: var(--msg-text-secondary);
  margin: 0;
  opacity: 0.7;
}

@keyframes pulseText {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.02);
  }
}

/* ============================================
   OVERLAY DE FIN D'APPEL
   ============================================ */
.call-end-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 17, 23, 0.98) 0%, rgba(23, 25, 35, 0.95) 100%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
}

.call-end-overlay.show {
  opacity: 1;
  visibility: visible;
  animation: fadeInEnd 0.3s ease forwards;
}

@keyframes fadeInEnd {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.end-content {
  text-align: center;
  color: var(--msg-text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--msg-spacing-md);
}

.end-icon {
  font-size: 4rem;
  animation: endIconAnimation 0.6s ease forwards;
  transform: scale(0);
}

@keyframes endIconAnimation {
  0% {
    transform: scale(0) rotate(-180deg);
    opacity: 0;
  }
  50% {
    transform: scale(1.2) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

.end-text {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--msg-text-primary);
  margin: 0;
  letter-spacing: 0.5px;
  animation: fadeInUp 0.5s ease 0.2s forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#videoCallContainer.show .video-container {
  opacity: 1 !important;
  visibility: visible !important;
}

#videoCallContainer.show #localVideo,
#videoCallContainer.show #remoteVideo {
  opacity: 1 !important;
  visibility: visible !important;
  display: block !important;
}

@keyframes fadeInCall {
  from {
    opacity: 0;
    transform: scale(0.95);
    -webkit-backdrop-filter: blur(0);
    backdrop-filter: blur(0);
  }
  to {
    opacity: 1;
    transform: scale(1);
    -webkit-backdrop-filter: var(--msg-blur-lg);
    backdrop-filter: var(--msg-blur-lg);
  }
}

.video-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: scaleInModern 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
}

@keyframes scaleInModern {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Vidéo principale (plein écran) - Style Snapchat */
#localVideo.main-video,
#remoteVideo.main-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  border-radius: 0;
  box-shadow: none;
  background: #000;
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
  display: block;
  visibility: visible;
  opacity: 1;
}

/* Vidéo en overlay (petite) - Style Snapchat */
#localVideo.overlay-video,
#remoteVideo.overlay-video {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 180px;
  height: 240px;
  border-radius: 16px;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.25);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(0, 0, 0, 0.5);
  background: #000;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 10;
  overflow: hidden;
  display: block;
  visibility: visible;
  opacity: 1;
}

#localVideo.overlay-video:hover,
#remoteVideo.overlay-video:hover {
  transform: scale(1.08);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(255, 255, 255, 0.2) inset,
    0 0 30px rgba(0, 0, 0, 0.6);
}

#localVideo.overlay-video:active,
#remoteVideo.overlay-video:active {
  transform: scale(1.05);
}

/* Label pour la vidéo overlay */
#localVideo.overlay-video::after {
  content: 'Vous';
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.75);
  color: var(--msg-text-primary);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  pointer-events: none;
}

#remoteVideo.overlay-video::after {
  content: 'Appelant';
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.75);
  color: var(--msg-text-primary);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  pointer-events: none;
}

/* Animation de basculement */
@keyframes videoSwitch {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(0.95);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.video-switching {
  animation: videoSwitch 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.call-controls {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  animation: fadeInControls 0.8s ease 0.4s both;
  padding: var(--msg-spacing-lg);
  background: rgba(0, 0, 0, 0.35);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  z-index: 110; /* inférieur aux filtres (z-index 120) pour que le menu filtres soit au-dessus */
  max-width: min(90%, calc(100vw - 24px));
  width: max-content;
  min-height: 60px;
  box-sizing: border-box;
}

@keyframes fadeInControls {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

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

.call-controls button,
.call-ctrl-btn {
  padding: 14px 24px;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  font-size: 0.95em;
  color: var(--msg-text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-weight: 600;
  min-width: 140px;
  min-height: 52px;
  justify-content: center;
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  position: relative;
  overflow: hidden;
  text-transform: none;
  letter-spacing: 0.3px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.call-ctrl-icon {
  font-size: 1.15em;
  line-height: 1;
}

.call-ctrl-label {
  white-space: nowrap;
}

#addParticipantBtn {
  background: linear-gradient(135deg, #6c5ce7 0%, #5a4fcf 100%);
  display: inline-flex;
  visibility: visible;
  opacity: 1;
}

#addParticipantBtn:hover {
  background: linear-gradient(135deg, #5a4fcf 0%, #4a3fbf 100%);
  transform: translateY(-2px);
  box-shadow: 
    0 12px 32px rgba(108, 92, 231, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}

#addParticipantBtn:active {
  transform: translateY(0);
}

#filtersBtn {
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4);
}

#filtersBtn:hover {
  background: linear-gradient(135deg, #5a4fcf 0%, #8b7cf0 100%);
  transform: translateY(-2px);
}

#filtersBtn.active {
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.5);
}

#flipCameraBtn {
  background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
}

#flipCameraBtn:hover:not(:disabled) {
  background: linear-gradient(135deg, #5a6578 0%, #3d4a5c 100%);
}

#flipCameraBtn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#screenShareBtn.active {
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.5);
}

#screenShareBtn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Barre de filtres - AU-DESSUS des boutons d'appel (z-index supérieur pour rester cliquable) */
.call-filters-bar {
  position: fixed;
  bottom: 160px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  z-index: 120;
  animation: slideUpFilters 0.3s ease;
  box-sizing: border-box;
  max-width: min(360px, calc(100vw - 24px));
  width: max-content;
}

@keyframes slideUpFilters {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

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

.call-filters-hint {
  margin: 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  max-width: 240px;
}

.call-filters-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 6px 4px;
  max-width: 100%;
  flex-wrap: nowrap;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y pinch-zoom;
}

.call-filters-scroll:focus {
  outline: 2px solid #a29bfe;
  outline-offset: 2px;
}

.call-filters-scroll::-webkit-scrollbar {
  display: none;
}

.call-filter-item {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  border: 3px solid transparent;
  background: rgba(255, 255, 255, 0.12);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.call-filter-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.call-filter-item:focus-visible {
  outline: 2px solid #a29bfe;
  outline-offset: 2px;
}

.call-filter-item.active {
  border-color: #a29bfe;
  background: rgba(108, 92, 231, 0.35);
  box-shadow: 0 0 12px rgba(108, 92, 231, 0.4);
}

.call-filters-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  justify-content: center;
}

.call-filter-nav {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(108, 92, 231, 0.35);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.call-filter-nav:hover {
  background: rgba(108, 92, 231, 0.6);
  transform: scale(1.05);
}

.call-filter-nav:focus-visible {
  outline: 2px solid #a29bfe;
  outline-offset: 2px;
}

.call-filter-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  min-width: 80px;
  text-align: center;
}

.call-filters-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.call-filters-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

.call-filters-close:focus-visible {
  outline: 2px solid #a29bfe;
  outline-offset: 2px;
}

@media (max-width: 768px) {
  /* Barre contrôles compacte sur tablette/mobile */
  .call-controls {
    animation: fadeInControlsMobile 0.8s ease 0.4s both;
    bottom: max(16px, env(safe-area-inset-bottom));
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    transform: none;
    margin: 0 auto;
    width: auto;
    max-width: calc(100vw - 24px);
    padding: 10px 14px;
    gap: 8px;
    min-height: 0;
    border-radius: 20px;
  }
  .call-controls button,
  .call-ctrl-btn {
    min-width: 0;
    padding: 10px 16px;
    min-height: 44px;
    font-size: 0.9em;
  }
  .call-filters-bar {
    bottom: 100px;
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    transform: none;
    width: auto;
    max-width: calc(100vw - 24px);
    padding: 12px 14px;
    animation: slideUpFiltersMobile 0.3s ease;
  }
  .call-filters-hint {
    font-size: 0.7rem;
  }
  .call-filter-item {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.25rem;
  }
  .call-filter-nav {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
  }
}

@media (max-width: 480px) {
  /* Smartphone : barre ultra-compacte, icônes seules, dans l'écran */
  .call-controls {
    animation: fadeInControlsMobile 0.8s ease 0.4s both;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    transform: none;
    margin: 0 auto;
    width: auto;
    max-width: calc(100vw - 24px);
    padding: 8px 12px;
    gap: 6px;
    flex-wrap: wrap;
    min-height: 0;
    border-radius: 28px;
  }
  .call-controls button,
  .call-ctrl-btn {
    min-width: 48px;
    min-height: 48px;
    width: 48px;
    padding: 0;
    border-radius: 50%;
  }
  .call-ctrl-label {
    display: none;
  }
  .call-ctrl-icon {
    font-size: 1.35em;
    margin: 0;
  }
  #endCallBtn {
    min-width: 52px;
    width: 52px;
    min-height: 52px;
    height: 52px;
    background: linear-gradient(135deg, #e53935, #c62828) !important;
    flex-shrink: 0;
  }
  .call-filters-bar {
    bottom: 88px;
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    transform: none;
    width: auto;
    max-width: calc(100vw - 24px);
    padding: 10px 12px;
    animation: slideUpFiltersMobile 0.3s ease;
  }
  .call-filters-hint {
    font-size: 0.65rem;
    max-width: 180px;
  }
  .call-filters-scroll {
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
  }
  .call-filter-item {
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
    font-size: 1.2rem;
  }
}

.call-controls button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.call-controls button:hover::before {
  width: 350px;
  height: 350px;
}

.call-controls button::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
}

.call-controls button:hover::after {
  opacity: 1;
}

.call-controls button:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 4px;
}

.call-controls button:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 
    0 12px 32px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}

.call-controls button:active {
  transform: translateY(-2px) scale(1.05);
}

#endCallBtn {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 
    0 8px 24px rgba(239, 68, 68, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(239, 68, 68, 0.2);
}

#endCallBtn:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 
    0 12px 32px rgba(239, 68, 68, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 30px rgba(239, 68, 68, 0.3);
}

#endCallBtn:hover {
  background: linear-gradient(135deg, #d32f2f, #b71c1c);
  box-shadow: 0 8px 25px rgba(244, 67, 54, 0.6);
}

#toggleAudioBtn,
#toggleVideoBtn {
  background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(74, 85, 104, 0.2);
}

#toggleAudioBtn:hover,
#toggleVideoBtn:hover {
  background: linear-gradient(135deg, #5a6578 0%, #3d4758 100%);
  box-shadow: 
    0 12px 32px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 30px rgba(74, 85, 104, 0.3);
}

#toggleAudioBtn.muted {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 
    0 8px 24px rgba(239, 68, 68, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(239, 68, 68, 0.2);
}

#toggleAudioBtn.muted:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 
    0 12px 32px rgba(239, 68, 68, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 30px rgba(239, 68, 68, 0.3);
}

#toggleVideoBtn.disabled {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 
    0 8px 24px rgba(239, 68, 68, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(239, 68, 68, 0.2);
}

#toggleVideoBtn.disabled:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 
    0 12px 32px rgba(239, 68, 68, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 30px rgba(239, 68, 68, 0.3);
}

#toggleScreenBtn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 
    0 8px 24px rgba(59, 130, 246, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 20px rgba(59, 130, 246, 0.2);
}

#toggleScreenBtn:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  box-shadow: 
    0 12px 32px rgba(59, 130, 246, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 30px rgba(59, 130, 246, 0.3);
}

.call-controls button i {
  font-size: 1.3em;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4));
  transition: transform 0.3s;
}

.call-controls button:hover i {
  transform: scale(1.1);
}

/* ============================================
   IMAGES LAZY LOADED - EFFETS MODERNES
   ============================================ */
.message-image {
  max-width: 200px;
  max-height: 240px;
  width: auto;
  height: auto;
  object-fit: cover;
  border-radius: var(--msg-radius-lg);
  cursor: pointer;
  opacity: 0;
  transition: var(--msg-transition-base);
  box-shadow: var(--msg-shadow-md);
  border: 2px solid var(--msg-border);
}

.message-image.loaded {
  opacity: 1;
  animation: scaleIn 0.4s ease;
}

.message-image:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: var(--msg-shadow-lg), var(--msg-primary-glow);
  border-color: var(--msg-primary);
}

.message-image[data-src] {
  background: linear-gradient(135deg, var(--msg-bg-message), var(--msg-bg-darker));
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.message-image[data-src]::before {
  content: '📷';
  font-size: 2.5rem;
  opacity: 0.4;
  animation: pulse 2s ease-in-out infinite;
}

.message-image[data-src]::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 2s infinite;
}

/* ============================================
   MODAL D'IMAGE - GLASSMORPHISM
   ============================================ */
.image-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--msg-bg-overlay);
  -webkit-backdrop-filter: var(--msg-blur-lg);
  backdrop-filter: var(--msg-blur-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--msg-z-overlay);
  cursor: pointer;
  animation: fadeIn 0.3s ease;
}

.image-modal-close {
  position: absolute;
  top: var(--msg-spacing-xl);
  right: var(--msg-spacing-xl);
  background: var(--msg-bg-glass);
  -webkit-backdrop-filter: var(--msg-blur-md);
  backdrop-filter: var(--msg-blur-md);
  color: var(--msg-text-primary);
  border: 2px solid var(--msg-border);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--msg-transition-bounce);
  z-index: 1;
  box-shadow: var(--msg-shadow-md);
}

.image-modal-close:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 3px;
}

.image-modal-close:hover {
  background: var(--msg-primary);
  transform: rotate(90deg) scale(1.15);
  box-shadow: var(--msg-shadow-lg), var(--msg-primary-glow);
  border-color: var(--msg-primary);
}

.image-modal-close:active {
  transform: rotate(90deg) scale(1.05);
}

/* ============================================
   TOASTS - DESIGN PREMIUM
   ============================================ */
.toast {
  position: fixed;
  bottom: var(--msg-spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--msg-spacing-md) var(--msg-spacing-xl);
  border-radius: var(--msg-radius-xl);
  opacity: 0;
  transition: var(--msg-transition-bounce);
  z-index: var(--msg-z-toast);
  box-shadow: var(--msg-shadow-xl);
  border: 2px solid var(--msg-border);
  color: var(--msg-text-primary);
  font-weight: 600;
  max-width: calc(100vw - 32px);
  width: auto;
  min-width: 200px;
  text-align: center;
  pointer-events: none;
  -webkit-backdrop-filter: var(--msg-blur-md);
  backdrop-filter: var(--msg-blur-md);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  margin: 0 var(--msg-spacing-md);
}

.toast::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.toast.show::before {
  left: 100%;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-15px) scale(1.02);
  pointer-events: auto;
  animation: float 3s ease-in-out infinite;
}

/* Correction mobile pour les toasts */
@media (max-width: 768px) {
  .toast {
    max-width: calc(100vw - 24px);
    margin: 0 var(--msg-spacing-md);
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    font-size: 0.9rem;
    bottom: var(--msg-spacing-lg);
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }
  
  .toast.show {
    transform: translateX(-50%) translateY(-10px) scale(1);
  }
}

@media (max-width: 480px) {
  .toast {
    max-width: calc(100vw - 16px);
    margin: 0 var(--msg-spacing-sm);
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    font-size: 0.85rem;
    bottom: var(--msg-spacing-md);
  }
}

.toast-success {
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.9), rgba(69, 160, 73, 0.9));
  border-color: rgba(76, 175, 80, 0.5);
  box-shadow: var(--msg-shadow-xl), 0 0 20px rgba(76, 175, 80, 0.4);
}

.toast-error {
  background: linear-gradient(135deg, rgba(244, 67, 54, 0.9), rgba(211, 47, 47, 0.9));
  border-color: rgba(244, 67, 54, 0.5);
  box-shadow: var(--msg-shadow-xl), 0 0 20px rgba(244, 67, 54, 0.4);
}

.toast-info {
  background: var(--msg-primary-gradient);
  border-color: var(--msg-primary);
  box-shadow: var(--msg-shadow-xl), var(--msg-primary-glow);
}

/* ============================================
   ÉTATS DE CHARGEMENT - ANIMATIONS
   ============================================ */
.loading-overlay {
  position: absolute;
  inset: 0;
  background: var(--msg-bg-overlay-light);
  -webkit-backdrop-filter: var(--msg-blur-sm);
  backdrop-filter: var(--msg-blur-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--msg-radius-md);
  z-index: var(--msg-z-header);
  animation: fadeIn 0.3s ease;
}

.spinning {
  animation: spin 1s linear infinite;
  filter: drop-shadow(0 0 8px rgba(108, 92, 231, 0.6));
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   ACCESSIBILITÉ AMÉLIORÉE
   ============================================ */
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
a:focus-visible,
[role="button"]:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 3px;
  border-radius: var(--msg-radius-sm);
  box-shadow: var(--msg-accent-glow);
}

/* Masquer les outlines au clic (souris) */
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

/* Contraste amélioré pour le texte - WCAG AA */
.chat-message .message-text,
.message-content {
  color: var(--msg-text-primary);
  line-height: 1.5;
}

/* Préserver le ratio de contraste sur les images */
.message-image {
  vertical-align: middle;
}
.message-image[alt] {
  font-size: 0.85em;
}

/* Contraste élevé pour utilisateurs sensibles */
@media (prefers-contrast: more) {
  .chat-message {
    border: 1px solid var(--msg-border);
  }
  button:focus-visible,
  input:focus-visible,
  .call-button:focus-visible {
    outline-width: 4px;
    outline-offset: 4px;
  }
}

/* Zone de focus visible pour les messages (double-clic copie) */
.chat-message:focus-visible {
  outline: 2px solid var(--msg-accent);
  outline-offset: 2px;
  border-radius: var(--msg-radius-md);
}

/* Réduire les animations pour les utilisateurs qui préfèrent */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .messages-container {
    scroll-behavior: auto;
  }
  
  .chat-messages {
    scroll-behavior: auto;
  }
}

/* Optimisations de performance pour mobile */
@media (max-width: 768px) {
  /* Utiliser GPU pour les animations - will-change uniquement sur éléments animés */
  #incomingCallModal,
  .video-container,
  .call-controls {
    transform: translateZ(0);
  }
  .chat-message {
    transform: translateZ(0);
  }
  
  /* Optimiser le scroll sur mobile */
  .messages-container .conversations,
  .chat-messages {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    scroll-behavior: smooth;
  }
  
  /* Réduire les effets de blur sur mobile pour les performances */
  #incomingCallModal {
    -webkit-backdrop-filter: blur(15px) saturate(150%);
    backdrop-filter: blur(15px) saturate(150%);
  }
  
  .chat-header {
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
  }
  
  .chat-form {
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
  }
  
  /* Améliorer la lisibilité sur petits écrans */
  .chat-message {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  /* Espacement optimal pour le tactile */
  .conversations li,
  .chat-message,
  button,
  input,
  textarea {
    min-height: 44px;
  }
  
  /* Améliorer les zones de touch */
  button,
  .conversations li,
  .chat-message {
    padding: 16px 20px;
  }
}

/* ============================================
   APERÇU D'IMAGE - DESIGN MODERNE
   ============================================ */
.image-preview-container {
  display: none;
  padding: var(--msg-spacing-md) var(--msg-spacing-lg);
  background: var(--msg-bg-glass);
  -webkit-backdrop-filter: var(--msg-blur-sm);
  backdrop-filter: var(--msg-blur-sm);
  border-top: 1px solid var(--msg-border);
  border-bottom: 1px solid var(--msg-border);
  align-items: center;
  gap: var(--msg-spacing-md);
  position: relative;
  animation: slideInRight 0.3s ease;
}

.image-preview-img {
  max-height: 80px;
  border-radius: var(--msg-radius-md);
  object-fit: cover;
  box-shadow: var(--msg-shadow-md);
  border: 2px solid var(--msg-border);
  transition: var(--msg-transition-base);
}

.image-preview-img:hover {
  transform: scale(1.1);
  box-shadow: var(--msg-shadow-lg);
  border-color: var(--msg-primary);
}

.image-preview-cancel {
  background: var(--msg-bg-glass);
  -webkit-backdrop-filter: var(--msg-blur-sm);
  backdrop-filter: var(--msg-blur-sm);
  border: 2px solid var(--msg-border);
  color: var(--msg-text-primary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: var(--msg-spacing-xs) var(--msg-spacing-sm);
  border-radius: var(--msg-radius-full);
  transition: var(--msg-transition-bounce);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  box-shadow: var(--msg-shadow-sm);
}

.image-preview-cancel:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 3px;
}

.image-preview-cancel:hover {
  background: var(--msg-primary);
  transform: rotate(90deg) scale(1.15);
  box-shadow: var(--msg-shadow-md), var(--msg-primary-glow);
  border-color: var(--msg-primary);
}

.image-preview-cancel:active {
  transform: rotate(90deg) scale(1.05);
}

/* ============================================
   BOUTONS DE CONVERSATION - EFFETS PREMIUM
   ============================================ */
.conversation-name-container {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation-buttons {
  display: flex;
  gap: var(--msg-spacing-sm);
  flex-shrink: 0;
  margin-left: var(--msg-spacing-sm);
}

.call-btn {
  padding: var(--msg-spacing-xs) var(--msg-spacing-md);
  font-size: 0.75em;
  background: var(--msg-primary-gradient);
  border: none;
  border-radius: var(--msg-radius-md);
  color: var(--msg-text-primary);
  cursor: pointer;
  transition: var(--msg-transition-bounce);
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 600;
  box-shadow: var(--msg-shadow-sm);
  position: relative;
  overflow: hidden;
}

.call-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.call-btn:hover::before {
  width: 200px;
  height: 200px;
}

.call-btn:focus-visible {
  outline: 2px solid var(--msg-accent);
  outline-offset: 2px;
}

.call-btn:hover {
  background: var(--msg-primary-dark);
  transform: translateY(-2px) scale(1.1);
  box-shadow: var(--msg-shadow-md), var(--msg-primary-glow);
}

.call-btn:active {
  transform: translateY(0) scale(1.05);
}

/* ============================================
   MENU PLUS D'ACTIONS - DESIGN MODERNE
   ============================================ */
.more-action-btn {
  width: 100%;
  justify-content: flex-start;
  border-radius: var(--msg-radius-md);
  padding: var(--msg-spacing-md) var(--msg-spacing-lg);
  background: transparent;
  box-shadow: none;
  font-size: 0.9rem;
  border: none;
  color: var(--msg-text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--msg-spacing-md);
  transition: var(--msg-transition-base);
  position: relative;
  overflow: hidden;
}

.more-action-btn::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--msg-primary-gradient);
  transform: scaleY(0);
  transition: var(--msg-transition-base);
}

.more-action-btn:focus-visible {
  outline: 2px solid var(--msg-accent);
  outline-offset: 2px;
}

.more-action-btn:hover {
  background: var(--msg-bg-glass);
  transform: translateX(8px);
  box-shadow: var(--msg-shadow-sm);
}

.more-action-btn:hover::before {
  transform: scaleY(1);
}

.more-action-btn:active {
  transform: translateX(4px);
}

/* ============================================
   RESPONSIVE DESIGN ULTRA OPTIMISÉ MOBILE
   ============================================ */
@media (max-width: 768px) {
  /* Amélioration des performances sur mobile */
  * {
    -webkit-tap-highlight-color: rgba(74, 85, 104, 0.2);
    -webkit-touch-callout: none;
  }
  
  html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
    position: relative;
  }
  
  .messages-container {
    flex-direction: column;
    height: 100vh;
    height: 100dvh; /* Support viewport dynamique */
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden !important;
    overflow-y: auto;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    position: relative;
    overscroll-behavior-x: none;
    touch-action: pan-y;
  }
  
  .messages-container .chat {
    width: 100%;
    max-width: 100vw;
    min-width: 0;
    overflow-x: hidden !important;
    overflow-y: auto;
    box-sizing: border-box;
    position: relative;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    overscroll-behavior-x: none;
    touch-action: pan-y;
  }
  
  .messages-container .chat > * {
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden !important;
    touch-action: pan-y;
  }
  
  .chat-form {
    touch-action: pan-y pinch-zoom;
    overflow: visible !important;
    overflow-x: hidden !important;
    overflow-y: visible !important;
  }
  
  .messages-container .conversations {
    position: fixed;
    left: -100%;
    top: 0;
    width: 100%;
    max-width: 320px;
    z-index: 1000;
    height: 100vh;
    height: 100dvh;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    -webkit-overflow-scrolling: touch;
  }
  
  .messages-container .conversations.open {
    transform: translateX(100%);
  }
  
  .messages-container .chat {
    width: 100%;
    min-height: 0;
  }
  
  .chat-header {
    padding: 0.875rem 1rem !important;
    font-size: 0.95rem !important;
    min-height: var(--msg-touch-target);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    background: rgba(26, 32, 44, 0.95);
  }
  
  .chat-header-avatar {
    width: 40px !important;
    height: 40px !important;
    font-size: 0.9rem !important;
    flex-shrink: 0;
  }
  
  .conversation-avatar-container {
    width: 40px !important;
    height: 40px !important;
    font-size: 0.9rem !important;
  }
  
  .burger {
    min-width: var(--msg-touch-target) !important;
    min-height: var(--msg-touch-target) !important;
    padding: 10px !important;
  }
  
  #incomingCallModal {
    bottom: max(20px, env(safe-area-inset-bottom));
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    min-width: calc(100vw - 32px);
    max-width: calc(100vw - 32px);
    width: calc(100vw - 32px);
    border-radius: 18px;
    will-change: transform, opacity;
    box-sizing: border-box;
    margin: 0 var(--msg-spacing-md);
  }

  #incomingCallModal .caller-info {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    gap: var(--msg-spacing-md);
  }

  #incomingCallModal .caller-avatar {
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
  }
  
  #incomingCallModal #callerName {
    font-size: 1em;
  }
  
  #incomingCallModal .caller-status {
    font-size: 0.8em;
  }

  #incomingCallModal .call-button {
    min-width: 90px;
    min-height: var(--msg-touch-target);
    padding: 10px 18px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 12px;
  }
  
  #incomingCallModal .call-buttons {
    padding: 0 var(--msg-spacing-lg) var(--msg-spacing-md) var(--msg-spacing-lg);
    gap: var(--msg-spacing-md);
    flex-wrap: wrap;
    justify-content: center;
  }

  #incomingCallModal .call-button,
  #incomingCallModal .call-button-accept,
  #incomingCallModal .call-button-accept-audio,
  #incomingCallModal .call-button-reject {
    min-width: 120px;
    min-height: var(--msg-touch-target-large);
    padding: 14px 24px;
    font-size: 0.95rem;
    flex: 1;
    flex-basis: 140px;
  }

  /* Dropdown type d'appel - mobile */
  .call-header-wrapper {
    min-width: var(--msg-touch-target);
    min-height: var(--msg-touch-target);
  }

  #callHeaderBtn {
    min-width: var(--msg-touch-target-large);
    min-height: var(--msg-touch-target-large);
    padding: 10px;
  }

  .call-type-dropdown {
    min-width: 280px;
    max-width: calc(100vw - 32px);
    padding: 12px;
    border-radius: 16px;
    left: 50% !important;
    transform: translateX(-50%);
    margin-left: 0;
  }

  .call-type-option {
    min-height: var(--msg-touch-target-large);
    padding: 16px 20px;
    font-size: 1rem;
    gap: 14px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .call-type-option i {
    width: 24px;
    height: 24px;
  }

  .call-type-option:active {
    background: rgba(108, 92, 231, 0.35);
  }

  /* Contrôles d'appel - safe area */
  .call-controls {
    bottom: max(20px, env(safe-area-inset-bottom));
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    gap: var(--msg-spacing-md);
  }

  /* Vidéo overlay sur mobile */
  #localVideo.overlay-video,
  #remoteVideo.overlay-video {
    top: 16px;
    right: 16px;
    width: 140px;
    height: 190px;
    border-width: 2px;
  }
  
  #localVideo.overlay-video::after,
  #remoteVideo.overlay-video::after {
    font-size: 0.65rem;
    padding: 3px 8px;
    bottom: 6px;
  }

  .call-controls {
    bottom: 20px;
    gap: var(--msg-spacing-md);
    padding: var(--msg-spacing-md);
    border-radius: 20px;
    max-width: 95%;
  }
  
  /* Vidéo overlay sur tablette */
  #localVideo.overlay-video,
  #remoteVideo.overlay-video {
    top: 16px;
    right: 16px;
    width: 150px;
    height: 200px;
    border-width: 2px;
  }

  .call-controls button {
    min-width: 140px;
    min-height: var(--msg-touch-target);
    padding: 14px 24px;
    font-size: 0.95rem;
    border-radius: 18px;
    font-weight: 600;
  }

  .call-controls button:hover {
    transform: translateY(-2px) scale(1.02);
  }

  .call-controls button:active {
    transform: translateY(0) scale(0.98);
  }

  .toast {
    bottom: var(--msg-spacing-lg);
    padding: var(--msg-spacing-md) var(--msg-spacing-xl);
    font-size: 0.95rem;
    border-radius: var(--msg-radius-lg);
    left: 50%;
    transform: translateX(-50%);
    max-width: 92%;
    min-height: var(--msg-touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .image-modal-close {
    top: var(--msg-spacing-lg);
    right: var(--msg-spacing-lg);
    width: var(--msg-touch-target);
    height: var(--msg-touch-target);
    font-size: 22px;
    border-radius: 50%;
  }

  .message-image {
    max-width: 180px;
    max-height: 200px;
    border-radius: 16px;
  }
  
  .chat-form {
    padding: var(--msg-spacing-xs) var(--msg-spacing-xs) !important;
    gap: 4px !important;
    position: sticky !important;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    background: rgba(26, 32, 44, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(74, 85, 104, 0.3);
    z-index: 50;
    box-sizing: border-box;
    margin: 0;
    flex-shrink: 0;
    display: flex !important;
    align-items: center !important;
    overflow-x: hidden !important;
    overflow-y: visible !important;
    min-height: auto !important;
  }
  
  .chat-form textarea {
    font-size: 0.875rem !important;
    padding: 8px 12px !important;
    min-height: 36px !important;
    max-height: 100px !important;
    border-radius: 18px !important;
    resize: none;
    flex: 1 1 auto !important;
    min-width: 0 !important;
    max-width: none !important;
    width: 0 !important; /* Force flex à calculer la largeur */
    box-sizing: border-box;
    overflow-x: hidden !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
  }
  
  .chat-form button,
  .chat-form .more-actions-wrapper {
    min-width: var(--msg-touch-target-small) !important;
    min-height: var(--msg-touch-target-small) !important;
    width: var(--msg-touch-target-small) !important;
    height: var(--msg-touch-target-small) !important;
    max-width: var(--msg-touch-target-small) !important;
    border-radius: 50% !important;
    flex-shrink: 0 !important;
    flex-grow: 0 !important;
    box-sizing: border-box !important;
    padding: 0 !important;
    margin: 0 !important;
  }
  
  .chat-form button i,
  .chat-form .more-actions-wrapper button i {
    width: 18px !important;
    height: 18px !important;
    font-size: 18px !important;
  }
  
  .chat-form .more-actions-wrapper {
    position: relative;
    display: inline-flex;
    flex-shrink: 0 !important;
    width: 36px !important;
    min-width: 36px !important;
    max-width: 36px !important;
    height: 36px !important;
    box-sizing: border-box !important;
    z-index: 101 !important;
  }
  
  .chat-form .more-actions-wrapper button {
    width: 100% !important;
    height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    pointer-events: auto !important;
    touch-action: manipulation !important;
  }
  
  .more-actions-wrapper {
    position: relative !important;
    z-index: 1000 !important;
  }
  
  .more-actions-menu {
    z-index: 10000 !important;
    box-sizing: border-box !important;
    position: fixed !important;
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    background: var(--msg-darker-bg) !important;
    border-radius: 12px !important;
    box-shadow: var(--msg-shadow-xl) !important;
    border: 1px solid var(--msg-border-color) !important;
    padding: 10px !important;
    flex-direction: column !important;
    gap: 6px !important;
    min-width: 200px !important;
    width: auto !important;
    overflow: visible !important;
    white-space: nowrap !important;
  }
  
  .more-actions-menu .more-action-btn {
    width: 100% !important;
    min-width: 100% !important;
    padding: 12px 14px !important;
    box-sizing: border-box !important;
    white-space: nowrap !important;
    overflow: visible !important;
    text-overflow: ellipsis !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: 10px !important;
    font-size: 0.95rem !important;
  }
  
  .more-actions-menu.open {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .emoji-picker {
    z-index: 10000 !important;
    position: fixed !important;
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    background: var(--msg-darker-bg) !important;
    border-radius: 12px !important;
    box-shadow: var(--msg-shadow-xl) !important;
    border: 1px solid var(--msg-border-color) !important;
  }
  
  .emoji-picker.show {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .chat-form {
    position: relative !important;
    overflow: visible !important;
    overflow-x: hidden !important;
    overflow-y: visible !important;
  }
  
  .more-actions-wrapper {
    position: relative !important;
    overflow: visible !important;
    z-index: 1000 !important;
  }
  
  #emojiButton {
    position: relative !important;
    z-index: 1000 !important;
  }
  
  .chat-messages {
    padding: 1rem var(--msg-spacing-sm) !important;
    padding-bottom: calc(1rem + 80px) !important; /* Espace pour le formulaire */
    gap: 20px !important;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden !important;
    overflow-y: auto;
    position: relative;
  }
  
  .chat-messages > * {
    max-width: 100%;
    box-sizing: border-box;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  
  .chat-message {
    max-width: 92% !important;
    padding: 16px 20px !important;
    font-size: 0.98rem !important;
    line-height: 1.5 !important;
    margin-bottom: 0 !important;
  }
  
  .conversations li {
    min-height: var(--msg-touch-target);
    padding: 12px 16px !important;
    margin-bottom: 0 !important;
  }
  
  .new-message input {
    min-height: var(--msg-touch-target);
    padding: 12px 16px !important;
    font-size: 0.95rem !important;
  }
  
  .new-message button {
    min-width: var(--msg-touch-target) !important;
    min-height: var(--msg-touch-target) !important;
    padding: 12px 20px !important;
  }
}

@media (max-width: 480px) {
  /* Optimisations pour très petits écrans */
  html, body {
    overflow-x: hidden !important;
    width: 100%;
    max-width: 100vw;
  }
  
  .messages-container {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden !important;
    overflow-y: auto;
  }
  
  .messages-container .conversations {
    max-width: 100%;
    padding: 0;
    overflow-x: hidden !important;
  }
  
  .messages-container .chat {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden !important;
    overflow-y: auto;
  }
  
  .chat-header {
    padding: 0.75rem var(--msg-spacing-sm) !important;
    font-size: 0.9rem !important;
    gap: 0.75rem !important;
    min-height: var(--msg-touch-target);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden !important;
  }
  
  .chat-form {
    padding: var(--msg-spacing-sm) !important;
    gap: var(--msg-spacing-xs) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden !important;
  }
  
  .chat-form textarea {
    max-width: calc(100% - var(--msg-touch-target) - var(--msg-spacing-xs) * 2) !important;
    font-size: 0.875rem !important;
    padding: 10px 12px !important;
  }
  
  .chat-messages {
    padding: 0.875rem var(--msg-spacing-xs) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden !important;
  }
  
  .chat-header-avatar {
    width: 36px !important;
    height: 36px !important;
    font-size: 0.85rem !important;
  }
  
  .conversation-avatar-container {
    width: 36px !important;
    height: 36px !important;
    font-size: 0.85rem !important;
  }
  
  .conversations-title {
    font-size: 1.15rem !important;
    margin-bottom: 1rem !important;
  }
  
  .section-title {
    font-size: 1rem !important;
    margin-top: 1.5rem !important;
  }
  
  .burger {
    width: var(--msg-touch-target) !important;
    height: var(--msg-touch-target) !important;
    padding: 10px !important;
  }
  
  #incomingCallModal {
    bottom: max(16px, env(safe-area-inset-bottom));
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    min-width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    width: calc(100vw - 24px);
    border-radius: 16px;
    box-sizing: border-box;
    margin: 0 var(--msg-spacing-sm);
  }

  #incomingCallModal .caller-info {
    padding: var(--msg-spacing-md);
    gap: var(--msg-spacing-sm);
  }

  #incomingCallModal .caller-avatar {
    width: 52px;
    height: 52px;
    font-size: 1.4rem;
  }
  
  #incomingCallModal #callerName {
    font-size: 0.95em;
  }
  
  #incomingCallModal .caller-status {
    font-size: 0.75em;
  }
  
  #incomingCallModal .call-button {
    min-width: 85px;
    min-height: var(--msg-touch-target);
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 12px;
  }
  
  #incomingCallModal .call-buttons {
    padding: 0 var(--msg-spacing-md) var(--msg-spacing-md) var(--msg-spacing-md);
    gap: var(--msg-spacing-md);
    flex-wrap: wrap;
    justify-content: center;
  }

  #incomingCallModal .call-button,
  #incomingCallModal .call-button-accept,
  #incomingCallModal .call-button-accept-audio,
  #incomingCallModal .call-button-reject {
    min-width: 100%;
    min-height: var(--msg-touch-target-large);
    padding: 16px 24px;
    font-size: 1rem;
  }

  .call-type-dropdown {
    min-width: calc(100vw - 48px);
    max-width: 320px;
    left: 50% !important;
    transform: translateX(-50%);
    padding: 16px;
    border-radius: 20px;
  }

  .call-type-option {
    min-height: 56px;
    padding: 18px 24px;
    font-size: 1.05rem;
  }

  .call-controls {
    bottom: max(16px, env(safe-area-inset-bottom));
    padding: var(--msg-spacing-md);
    gap: var(--msg-spacing-sm);
  }

  .call-controls button {
    min-height: var(--msg-touch-target-large);
    padding: 18px 24px;
  }

  .video-container {
    gap: var(--msg-spacing-lg);
    padding: var(--msg-spacing-md);
    width: 100%;
  }

  #localVideo {
    width: 180px;
    height: 135px;
    border-radius: 16px;
    border-width: 2px;
  }
  
  #localVideo::after {
    font-size: 0.65rem;
    padding: 2px 8px;
    bottom: 5px;
  }

  #remoteVideo {
    max-height: 55vh;
    border-radius: 20px;
    border-width: 2px;
  }

  .call-controls {
    bottom: 16px;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: var(--msg-spacing-sm);
    padding: var(--msg-spacing-md);
    border-radius: 18px;
    max-width: 98%;
  }
  
  /* Vidéo overlay sur mobile */
  #localVideo.overlay-video,
  #remoteVideo.overlay-video {
    top: 12px;
    right: 12px;
    width: 120px;
    height: 160px;
    border-width: 2px;
    border-radius: 14px;
  }
  
  #localVideo.overlay-video::after,
  #remoteVideo.overlay-video::after {
    font-size: 0.6rem;
    padding: 2px 6px;
    bottom: 5px;
  }

  .call-controls button,
  .call-ctrl-btn {
    min-width: 48px;
    min-height: 48px;
    width: 48px;
    padding: 0;
    font-size: 0.95rem;
    border-radius: 50%;
    font-weight: 600;
  }

  .toast {
    font-size: 0.9rem;
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    border-radius: var(--msg-radius-lg);
    max-width: 94%;
    min-height: var(--msg-touch-target);
  }
  
  .chat-form {
    padding: 0.875rem var(--msg-spacing-sm) !important;
    gap: var(--msg-spacing-sm) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .chat-form textarea {
    max-width: 100%;
    box-sizing: border-box;
    font-size: 0.9rem !important;
    padding: 12px 14px !important;
    min-height: 48px;
    border-radius: 18px;
  }
  
  .chat-form button {
    min-width: var(--msg-touch-target) !important;
    min-height: var(--msg-touch-target) !important;
    width: var(--msg-touch-target) !important;
    height: var(--msg-touch-target) !important;
  }
  
  .chat-messages {
    padding: 0.875rem var(--msg-spacing-sm) !important;
    padding-bottom: calc(0.875rem + 90px) !important;
    gap: 20px !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
  }
  
  .chat-message {
    max-width: 90% !important;
    padding: 14px 18px !important;
    font-size: 0.95rem !important;
    line-height: 1.5 !important;
    margin-bottom: 0 !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
    box-sizing: border-box;
  }
  
  .message-text {
    font-size: 0.95rem !important;
    line-height: 1.5 !important;
  }
  
  .conversations li {
    min-height: var(--msg-touch-target);
    padding: 11px 14px !important;
    margin-bottom: var(--msg-spacing-xs) !important;
  }
  
  .new-message input {
    min-height: var(--msg-touch-target);
    padding: 12px 14px !important;
    font-size: 0.9rem !important;
  }
  
  .new-message button {
    min-width: var(--msg-touch-target) !important;
    min-height: var(--msg-touch-target) !important;
    padding: 12px 18px !important;
    font-size: 0.9rem !important;
  }
  
  .image-modal-close {
    width: var(--msg-touch-target) !important;
    height: var(--msg-touch-target) !important;
    font-size: 20px !important;
  }
  
  .message-image {
    max-width: min(160px, 75%);
    max-height: 180px;
    border-radius: 14px;
  }
}

/* Support pour les très petits écrans (iPhone SE, etc.) */
@media (max-width: 375px) {
  html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
  }
  
  .messages-container {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }
  
  .messages-container .chat {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }
  
  #incomingCallModal {
    min-width: calc(100vw - 32px);
    max-width: calc(100vw - 32px);
    width: calc(100vw - 32px);
    padding: var(--msg-spacing-lg);
    left: 50%;
    right: auto;
    box-sizing: border-box;
    margin: 0 var(--msg-spacing-md);
  }
  
  #incomingCallModal .call-buttons {
    flex-direction: column;
    gap: var(--msg-spacing-md);
    padding: 0 var(--msg-spacing-md) max(var(--msg-spacing-lg), env(safe-area-inset-bottom));
  }

  #incomingCallModal .call-button,
  #incomingCallModal .call-button-accept,
  #incomingCallModal .call-button-accept-audio,
  #incomingCallModal .call-button-reject {
    width: 100%;
    min-height: 56px;
    font-size: 1rem;
  }

  .call-controls {
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100vw - 24px);
    width: max-content;
  }

  #callStatusBanner {
    padding: max(var(--msg-spacing-md), env(safe-area-inset-top)) var(--msg-spacing-sm) var(--msg-spacing-md);
    font-size: 0.9rem;
  }
  
  #incomingCallModal .caller-avatar {
    width: 90px;
    height: 90px;
    font-size: 2.25rem;
  }
  
  #incomingCallModal .caller-emoji {
    font-size: 3rem;
  }
  
  #incomingCallModal #callerName {
    font-size: 1.3em;
  }
  
  .chat-header {
    padding: 0.625rem var(--msg-spacing-sm) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .chat-form {
    padding: var(--msg-spacing-xs) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .chat-messages {
    padding: 0.75rem var(--msg-spacing-xs) !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .chat-message {
    max-width: 92% !important;
    padding: 14px 18px !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
    box-sizing: border-box;
  }

  .message-image {
    max-width: min(140px, 70%);
    max-height: 160px;
  }
}

/* Support pour l'orientation paysage sur mobile */
@media (max-width: 768px) and (orientation: landscape) {
  #incomingCallModal {
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--msg-spacing-lg);
  }
  
  #incomingCallModal .caller-avatar {
    width: 80px;
    height: 80px;
    font-size: 2rem;
    margin-bottom: var(--msg-spacing-md);
  }
  
  #incomingCallModal .caller-emoji {
    font-size: 3rem;
    margin-bottom: var(--msg-spacing-sm);
  }
  
  #incomingCallModal #callerName {
    font-size: 1.3em;
    margin-bottom: var(--msg-spacing-xs);
  }
  
  #incomingCallModal .caller-status {
    margin-bottom: var(--msg-spacing-md);
  }
  
  .video-container {
    flex-direction: row;
    gap: var(--msg-spacing-md);
  }
  
  #localVideo {
    width: 180px;
    height: 135px;
  }
  
  #remoteVideo {
    max-height: 70vh;
  }
  
  .call-controls {
    flex-direction: row;
    flex-wrap: wrap;
    padding: var(--msg-spacing-md);
  }
  
  .call-controls button {
    min-width: 120px;
  }
}

/* ============================================
   IMPRESSION
   ============================================ */
@media print {
  #incomingCallModal,
  #videoCallContainer,
  .toast,
  .loading-overlay {
    display: none !important;
  }
}

/* ============================================
   EFFETS SPÉCIAUX
   ============================================ */

/* Effet de brillance sur les boutons */
@keyframes shine {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

.call-button,
.call-controls button,
.call-btn {
  background-size: 200% auto;
  position: relative;
}

.call-button:hover,
.call-controls button:hover,
.call-btn:hover {
  background-position: right center;
  animation: shine 0.6s ease;
}

/* Effet de particules pour les modals */
#incomingCallModal::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(108, 92, 231, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(162, 155, 254, 0.1) 0%, transparent 50%);
  pointer-events: none;
  border-radius: var(--msg-radius-xl);
}

/* Amélioration des scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--msg-bg-darker);
  border-radius: var(--msg-radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--msg-primary-gradient);
  border-radius: var(--msg-radius-full);
  border: 2px solid var(--msg-bg-darker);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--msg-primary-light);
  box-shadow: var(--msg-primary-glow);
}

/* Espacement entre les messages */
.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Bulles message : aucun scroll interne, tout le contenu visible */
.chat-message,
.chat-message .message-content,
.chat-message .message-text {
  overflow-y: visible !important;
  max-height: none !important;
  overflow-x: hidden;
}

.chat-message {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.chat-message .message-content {
  max-width: 100%;
  min-width: 0;
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: break-word;
}

.chat-message .message-text {
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

/* Effet de profondeur pour les messages */
.chat-message {
  position: relative;
  margin-bottom: 0;
  max-width: 92%;
  min-width: 0;
  padding: 16px 20px;
  font-size: 0.98rem;
}

.chat-message::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: var(--msg-transition-base);
}

.chat-message:hover::after {
  opacity: 1;
}

/* Respect du mode préféré reduced-motion sur les effets de survol */
@media (prefers-reduced-motion: reduce) {
  .chat-message::after {
    transition: none;
  }
  .chat-message:hover::after {
    opacity: 0;
  }
}

/* ============================================
   MENU SIDEBAR MODERNE AVEC ONGLETS (STYLE SNAPCHAT ULTRA FIN)
   ============================================ */

/* Header du sidebar - Design ultra fin */
.sidebar-header {
  padding: var(--msg-spacing-lg) var(--msg-spacing-xl) var(--msg-spacing-md);
  border-bottom: 1px solid var(--msg-border-light);
  background: linear-gradient(180deg, var(--msg-bg-dark) 0%, var(--msg-bg-darker) 100%);
  position: sticky;
  top: 0;
  z-index: 10;
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  margin: 0;
}

.conversations-title {
  display: flex;
  align-items: center;
  gap: var(--msg-spacing-sm);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--msg-text-primary);
  margin: 0;
  letter-spacing: -0.8px;
  line-height: 1.2;
}

.conversations-title i {
  width: 22px;
  height: 22px;
  color: var(--msg-primary-light);
  opacity: 0.9;
  transition: var(--msg-transition-base);
}

.conversations-title:hover i {
  opacity: 1;
  transform: scale(1.05);
}

/* Système d'onglets style Snapchat - Ultra fin */
.sidebar-tabs {
  display: flex;
  position: relative;
  background: var(--msg-bg-darker);
  border-bottom: 1px solid var(--msg-border-light);
  padding: 0;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  margin: 0;
}

.sidebar-tabs::-webkit-scrollbar {
  display: none;
}

.sidebar-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--msg-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  min-width: 0;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  letter-spacing: 0.2px;
}

.sidebar-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(74, 85, 104, 0.05);
  opacity: 0;
  transition: opacity 0.2s ease;
  border-radius: var(--msg-radius-sm);
}

.sidebar-tab:hover::before {
  opacity: 1;
}

.sidebar-tab i {
  width: 18px;
  height: 18px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  stroke-width: 2;
}

.sidebar-tab:hover {
  color: var(--msg-text-secondary);
}

.sidebar-tab:hover i {
  transform: translateY(-1px);
}

.sidebar-tab.active {
  color: var(--msg-text-primary);
  font-weight: 700;
}

.sidebar-tab.active i {
  color: var(--msg-primary-light);
  transform: scale(1.08);
  filter: drop-shadow(0 0 4px rgba(74, 85, 104, 0.4));
}

.sidebar-tab.active::before {
  opacity: 0;
}

/* Indicateur animé ultra fin sous l'onglet actif */
.tab-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--msg-primary-light) 0%, var(--msg-primary) 50%, var(--msg-primary-light) 100%);
  border-radius: var(--msg-radius-full) var(--msg-radius-full) 0 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 
    0 0 8px rgba(74, 85, 104, 0.6),
    0 0 12px rgba(74, 85, 104, 0.3);
  will-change: width, left;
}

/* Contenu des onglets */
.sidebar-content {
  position: relative;
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--msg-bg-dark);
}

.tab-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  animation: fadeInTab 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: var(--msg-spacing-md) var(--msg-spacing-lg);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--msg-primary) var(--msg-bg-darker);
}

.tab-panel::-webkit-scrollbar {
  width: 4px;
}

.tab-panel::-webkit-scrollbar-track {
  background: transparent;
}

.tab-panel::-webkit-scrollbar-thumb {
  background: var(--msg-primary);
  border-radius: var(--msg-radius-full);
  opacity: 0.5;
}

.tab-panel::-webkit-scrollbar-thumb:hover {
  opacity: 0.8;
}

.tab-panel.active {
  display: flex;
  flex-direction: column;
}

@keyframes fadeInTab {
  from {
    opacity: 0;
    transform: translateX(8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.tab-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--msg-spacing-lg);
  padding-bottom: var(--msg-spacing-sm);
  border-bottom: 1px solid var(--msg-border-light);
}

.tab-panel-header .section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--msg-text-primary);
  margin: 0;
  letter-spacing: -0.3px;
}

.tab-panel-header .section-title i {
  width: 18px;
  height: 18px;
  color: var(--msg-primary-light);
  opacity: 0.8;
}

/* Liste des conversations - Design ultra fin */
.conversations-list {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--msg-primary) var(--msg-bg-darker);
}

.conversations-list::-webkit-scrollbar {
  width: 4px;
}

.conversations-list::-webkit-scrollbar-track {
  background: transparent;
}

.conversations-list::-webkit-scrollbar-thumb {
  background: var(--msg-primary);
  border-radius: var(--msg-radius-full);
  opacity: 0.5;
}

.conversations-list::-webkit-scrollbar-thumb:hover {
  opacity: 0.8;
}

/* Amis list - Design ultra fin */
.friends-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: calc(100vh - 300px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--msg-primary) var(--msg-bg-darker);
  -webkit-overflow-scrolling: touch;
}

.friends-list::-webkit-scrollbar {
  width: 4px;
}

.friends-list::-webkit-scrollbar-track {
  background: transparent;
}

.friends-list::-webkit-scrollbar-thumb {
  background: var(--msg-primary);
  border-radius: var(--msg-radius-full);
  opacity: 0.5;
}

.friends-list::-webkit-scrollbar-thumb:hover {
  opacity: 0.8;
}

/* Nouveau message amélioré - Ultra fin */
.new-message {
  display: flex;
  gap: var(--msg-spacing-sm);
  padding: var(--msg-spacing-sm) var(--msg-spacing-md);
  background: var(--msg-bg-glass);
  border-radius: var(--msg-radius-lg);
  margin-top: var(--msg-spacing-lg);
  border: 1px solid var(--msg-border-light);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: var(--msg-transition-base);
}

.new-message:focus-within {
  border-color: var(--msg-primary);
  box-shadow: 0 0 0 2px rgba(74, 85, 104, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
}

.new-message input {
  flex: 1;
  padding: 10px 14px;
  background: var(--msg-bg-darker);
  border: 1px solid var(--msg-border);
  border-radius: var(--msg-radius-md);
  color: var(--msg-text-primary);
  font-size: 0.875rem;
  transition: var(--msg-transition-base);
  font-weight: 400;
  letter-spacing: 0.1px;
}

.new-message input::placeholder {
  color: var(--msg-text-muted);
  opacity: 0.6;
}

.new-message input:focus {
  border-color: var(--msg-primary);
  background: var(--msg-bg-dark);
  box-shadow: 0 0 0 3px rgba(74, 85, 104, 0.15);
}

.new-message input:focus-visible {
  outline: 3px solid var(--msg-accent);
  outline-offset: 2px;
}

.new-message-btn {
  padding: 10px 18px;
  background: var(--msg-primary-gradient);
  border: none;
  border-radius: var(--msg-radius-md);
  color: var(--msg-text-primary);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  letter-spacing: 0.2px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.new-message-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.new-message-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.new-message-btn:hover::before {
  opacity: 1;
}

.new-message-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.new-message-btn i {
  width: 16px;
  height: 16px;
  transition: transform 0.25s;
}

.new-message-btn:hover i {
  transform: rotate(90deg) scale(1.1);
}

/* Section IA améliorée - Ultra fin */
.ai-assistant-section {
  padding: 0;
}

.ai-contact {
  display: flex;
  align-items: center;
  gap: var(--msg-spacing-md);
  padding: var(--msg-spacing-md) var(--msg-spacing-lg);
  background: var(--msg-bg-glass);
  border-radius: var(--msg-radius-lg);
  border: 1px solid var(--msg-border-light);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.ai-contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
  opacity: 0;
  transition: opacity 0.3s;
}

.ai-contact:hover {
  background: var(--msg-bg-message);
  transform: translateX(2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  border-color: var(--msg-border);
}

.ai-contact:hover::before {
  opacity: 1;
}

.ai-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: 
    0 4px 12px rgba(102, 126, 234, 0.4),
    0 0 0 2px rgba(102, 126, 234, 0.2);
  transition: var(--msg-transition-base);
  position: relative;
  z-index: 1;
}

.ai-contact:hover .ai-avatar {
  transform: scale(1.05);
  box-shadow: 
    0 6px 16px rgba(102, 126, 234, 0.5),
    0 0 0 3px rgba(102, 126, 234, 0.3);
}

.ai-info {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.ai-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--msg-text-primary);
  margin-bottom: 3px;
  letter-spacing: -0.2px;
}

.ai-status {
  font-size: 0.8rem;
  color: var(--msg-text-secondary);
  opacity: 0.8;
}

.ai-actions {
  display: flex;
  align-items: center;
  gap: var(--msg-spacing-sm);
  position: relative;
  z-index: 1;
}

.ai-customize-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--msg-bg-darker);
  border: 1px solid var(--msg-border);
  color: var(--msg-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0.7;
}

.ai-customize-btn:hover {
  background: var(--msg-primary);
  color: var(--msg-text-primary);
  transform: rotate(90deg) scale(1.1);
  opacity: 1;
  border-color: var(--msg-primary);
}

.ai-customize-btn i {
  width: 16px;
  height: 16px;
}

.ai-badge {
  padding: 3px 8px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: var(--msg-radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 6px rgba(102, 126, 234, 0.4);
}

/* Responsive pour les onglets - Ultra optimisé */
@media (max-width: 768px) {
  .sidebar-header {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg) var(--msg-spacing-sm);
  }
  
  .conversations-title {
    font-size: 1.2rem;
    gap: 8px;
    letter-spacing: -0.6px;
  }
  
  .conversations-title i {
    width: 20px;
    height: 20px;
  }
  
  .sidebar-tabs {
    padding: 0;
  }
  
  .sidebar-tab {
    padding: 12px 10px;
    font-size: 0.8rem;
    gap: 4px;
    min-width: 60px;
  }
  
  .sidebar-tab span {
    display: none;
  }
  
  .sidebar-tab i {
    width: 20px;
    height: 20px;
  }
  
  .tab-indicator {
    height: 2px;
  }
  
  .tab-panel {
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
  }
  
  .tab-panel-header {
    margin-bottom: var(--msg-spacing-md);
    padding-bottom: var(--msg-spacing-xs);
  }
  
  .tab-panel-header .section-title {
    font-size: 0.95rem;
    gap: 6px;
  }
  
  .tab-panel-header .section-title i {
    width: 16px;
    height: 16px;
  }
  
  .new-message {
    padding: var(--msg-spacing-sm);
    margin-top: var(--msg-spacing-md);
    gap: var(--msg-spacing-xs);
  }
  
  .new-message input {
    padding: 10px 12px;
    font-size: 0.85rem;
  }
  
  .new-message-btn {
    padding: 10px 12px;
    font-size: 0.8rem;
    gap: 4px;
  }
  
  .new-message-btn span {
    display: none;
  }
  
  .new-message-btn i {
    width: 18px;
    height: 18px;
  }
  
  .ai-contact {
    padding: var(--msg-spacing-md);
    gap: var(--msg-spacing-sm);
  }
  
  .ai-avatar {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
  
  .ai-name {
    font-size: 0.9rem;
  }
  
  .ai-status {
    font-size: 0.75rem;
  }
  
  .ai-customize-btn {
    width: 28px;
    height: 28px;
  }
  
  .ai-customize-btn i {
    width: 14px;
    height: 14px;
  }
  
  .ai-badge {
    font-size: 0.65rem;
    padding: 2px 6px;
  }
}

/* Desktop - Améliorations ultra fines */
@media (min-width: 769px) {
  .sidebar-header {
    padding: var(--msg-spacing-xl) var(--msg-spacing-2xl) var(--msg-spacing-lg);
  }
  
  .conversations-title {
    font-size: 1.5rem;
    letter-spacing: -1px;
  }
  
  .conversations-title i {
    width: 24px;
    height: 24px;
  }
  
  .sidebar-tab {
    padding: 16px 24px;
    font-size: 0.9rem;
    gap: 8px;
  }
  
  .sidebar-tab i {
    width: 19px;
    height: 19px;
  }
  
  .tab-panel {
    padding: var(--msg-spacing-lg) var(--msg-spacing-2xl);
  }
  
  .tab-panel-header {
    margin-bottom: var(--msg-spacing-xl);
  }
  
  .tab-panel-header .section-title {
    font-size: 1.05rem;
    gap: 10px;
  }
  
  .tab-panel-header .section-title i {
    width: 19px;
    height: 19px;
  }
  
  .new-message {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    margin-top: var(--msg-spacing-xl);
  }
  
  .new-message input {
    padding: 12px 16px;
    font-size: 0.9rem;
  }
  
  .new-message-btn {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  
  .ai-contact {
    padding: var(--msg-spacing-lg) var(--msg-spacing-xl);
    gap: var(--msg-spacing-lg);
  }
  
  .ai-avatar {
    width: 52px;
    height: 52px;
    font-size: 1.4rem;
  }
  
  .ai-name {
    font-size: 1rem;
  }
  
  .ai-status {
    font-size: 0.85rem;
  }
  
  .ai-customize-btn {
    width: 36px;
    height: 36px;
  }
  
  .ai-customize-btn i {
    width: 18px;
    height: 18px;
  }
}

/* Tablette - Optimisations intermédiaires */
@media (min-width: 481px) and (max-width: 768px) {
  .sidebar-header {
    padding: var(--msg-spacing-lg) var(--msg-spacing-xl) var(--msg-spacing-md);
  }
  
  .conversations-title {
    font-size: 1.3rem;
  }
  
  .sidebar-tab {
    padding: 14px 16px;
    font-size: 0.85rem;
  }
  
  .sidebar-tab span {
    display: inline;
  }
  
  .tab-panel {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
  }
  
  .new-message-btn span {
    display: inline;
  }
}

/* Très petits écrans */
@media (max-width: 375px) {
  .sidebar-header {
    padding: var(--msg-spacing-sm) var(--msg-spacing-md) var(--msg-spacing-xs);
  }
  
  .conversations-title {
    font-size: 1.1rem;
  }
  
  .sidebar-tab {
    padding: 10px 8px;
    min-width: 50px;
  }
  
  .tab-panel {
    padding: var(--msg-spacing-xs) var(--msg-spacing-sm);
  }
  
  .new-message {
    flex-direction: column;
    gap: var(--msg-spacing-xs);
  }
  
  .new-message-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Mode VR/Cardboard : texte plus grand pour lisibilité dans le casque */
body.vr-mode .messages-container,
body.vr-mode .chat,
body.vr-mode .msg-bubble,
body.vr-mode .msg-text,
body.vr-mode .conversations-title,
body.vr-mode .sidebar-tab,
body.vr-mode .conv-item,
body.vr-mode .new-message-input,
body.vr-mode button,
body.vr-mode .close-btn {
  font-size: 1.15em !important;
}
body.vr-mode .msg-bubble { padding: 14px 18px !important; min-height: 48px !important; }
body.vr-mode .conv-item { padding: 16px 20px !important; min-height: 56px !important; }
body.vr-mode .sidebar-tab { padding: 14px 16px !important; min-height: 48px !important; }
body.vr-mode button { min-height: 48px !important; padding: 12px 20px !important; }
body.vr-mode .new-message-input { min-height: 52px !important; font-size: 1.1em !important; }