/**
 * Liquid Glass Theme - Glassmorphism Effects
 * Style inspiré de macOS Big Sur et suivants
 * Utilise backdrop-filter pour des effets de flou et transparence
 */

/* ========================================
   CLASSES DE BASE GLASS
   ======================================== */

/* Panel glass standard (fond clair) */
.glass-panel {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 8px 32px 0 rgba(31, 38, 135, 0.15),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

/* Panel glass pour fond sombre */
.glass-panel-dark {
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 8px 32px 0 rgba(0, 0, 0, 0.37),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
}

/* Variantes d'intensité */
.glass-subtle {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-medium {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(15px) saturate(170%);
  -webkit-backdrop-filter: blur(15px) saturate(170%);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.glass-strong {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* ========================================
   BOUTONS GLASS
   ======================================== */

.glass-button {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.glass-button:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.glass-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.glass-button:disabled {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Bouton glass primary (avec couleur d'accent) */
.glass-button-primary {
  background: rgba(102, 126, 234, 0.3);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  border: 1px solid rgba(102, 126, 234, 0.5);
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.glass-button-primary:hover {
  background: rgba(102, 126, 234, 0.4);
  border-color: rgba(102, 126, 234, 0.6);
}

/* ========================================
   INPUTS GLASS
   ======================================== */

.glass-input {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.3s ease;
}

.glass-input:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(102, 126, 234, 0.5);
  outline: none;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.glass-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   CARTES GLASS
   ======================================== */

.glass-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(15px) saturate(170%);
  -webkit-backdrop-filter: blur(15px) saturate(170%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* ========================================
   SLIDER GLASS (pour volume control)
   ======================================== */

.glass-slider {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 8px;
  height: 8px;
  outline: none;
  transition: all 0.3s ease;
}

.glass-slider:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Thumb Webkit (Chrome, Safari) */
.glass-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.2s ease;
}

.glass-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow:
    0 6px 16px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.glass-slider::-webkit-slider-thumb:active {
  transform: scale(1.1);
}

/* Thumb Mozilla */
.glass-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.2s ease;
}

.glass-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

/* ========================================
   OVERLAY GLASS (pour CurrentTrack)
   ======================================== */

.glass-overlay {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
}

.glass-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(0, 0, 0, 0.3) 100%);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: backdrop-filter 0.3s ease;
  pointer-events: none;
}

.glass-overlay:hover::before {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ========================================
   UTILITAIRES
   ======================================== */

/* Backdrop blur seul */
.glass-blur {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.glass-blur-sm {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.glass-blur-lg {
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
}

/* Saturation */
.glass-saturate {
  backdrop-filter: saturate(180%);
  -webkit-backdrop-filter: saturate(180%);
}

/* Bordures glass */
.glass-border {
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.glass-border-subtle {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-border-strong {
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Shadow glass */
.glass-shadow {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.glass-shadow-lg {
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2);
}

/* Inset shadow (lumière interne) */
.glass-inset-light {
  box-shadow: inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

/* ========================================
   THÈME SOMBRE (prefers-color-scheme)
   ======================================== */

@media (prefers-color-scheme: dark) {
  .glass-panel {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.12);
  }

  .glass-subtle {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.08);
  }

  .glass-medium {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
  }

  .glass-strong {
    background: rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
  }

  .glass-button {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
  }

  .glass-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.25);
  }

  .glass-card {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .glass-card:hover {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
  }
}

/* ========================================
   FALLBACK (pas de backdrop-filter)
   ======================================== */

@supports not (backdrop-filter: blur(20px)) {
  .glass-panel,
  .glass-panel-dark,
  .glass-subtle,
  .glass-medium,
  .glass-strong {
    background: rgba(255, 255, 255, 0.95);
  }

  @media (prefers-color-scheme: dark) {
    .glass-panel,
    .glass-panel-dark,
    .glass-subtle,
    .glass-medium,
    .glass-strong {
      background: rgba(0, 0, 0, 0.95);
    }
  }

  .glass-button,
  .glass-button-primary {
    background: rgba(255, 255, 255, 0.9);
  }

  .glass-card {
    background: rgba(255, 255, 255, 0.98);
  }

  .glass-slider {
    background: rgba(200, 200, 200, 0.8);
  }
}

/* ========================================
   ANIMATIONS
   ======================================== */

/* Respecte prefers-reduced-motion */
@media (prefers-reduced-motion: no-preference) {
  @keyframes glassShimmer {
    0% {
      background-position: -200% center;
    }
    100% {
      background-position: 200% center;
    }
  }

  .glass-shimmer {
    background: linear-gradient(
      90deg,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.1) 50%,
      rgba(255, 255, 255, 0) 100%
    );
    background-size: 200% 100%;
    animation: glassShimmer 2s ease-in-out infinite;
  }
}

/* ========================================
   PERFORMANCE
   ======================================== */

/* GPU acceleration pour les éléments glass animés */
.glass-panel,
.glass-button,
.glass-card,
.glass-slider {
  transform: translateZ(0);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

/* Réduire l'animation sur préférence système */
@media (prefers-reduced-motion: reduce) {
  .glass-button,
  .glass-card,
  .glass-slider::-webkit-slider-thumb,
  .glass-slider::-moz-range-thumb {
    transition: none;
  }

  .glass-shimmer {
    animation: none;
  }
}