/* ─────────────────────────────────────────────────────────────────────────────
   MEDIA-PLAYER.CSS — Audio/Video Player Styling
   
   Features:
   - Loading spinner
   - Playback controls (play/pause, seek, volume)
   - Error fallback panel
   - Responsive sizing
   ───────────────────────────────────────────────────────────────────────────── */

/* ─── Media Player Container ────────────────────────────────────────────────── */

.media-player-container {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  margin-top: var(--space-lg);
}

.media-player-container:empty {
  display: none;
}

/* ─── Audio and Video Elements ──────────────────────────────────────────────── */

audio,
video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  display: block;
  background-color: var(--color-neutral-900);
}

video {
  background-color: #000;
}

audio {
  background-color: var(--color-neutral-100);
}

/* ─── Loading Spinner ──────────────────────────────────────────────────────── */

.spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 100px;
  margin: var(--space-lg) auto;
}

.spinner::after {
  content: '';
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-neutral-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ─── Player Controls ──────────────────────────────────────────────────────── */

.media-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-md);
  width: 100%;
}

/* Control buttons row */
.control-buttons {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
  width: 100%;
}

.play-pause-btn,
.control-btn {
  padding: var(--space-md);
  min-height: 44px;
  min-width: 44px;
  background-color: var(--color-primary);
  color: white;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.play-pause-btn:hover,
.control-btn:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.play-pause-btn:focus,
.control-btn:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.play-pause-btn:focus-visible,
.control-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.play-pause-btn:active,
.control-btn:active {
  transform: scale(0.95);
}

/* Time display */
.time-display {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  min-width: 120px;
  text-align: center;
  font-family: var(--font-family-mono);
  flex-shrink: 0;
}

/* ─── Seek Bar ────────────────────────────────────────────────────────────── */

.seek-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  width: 100%;
  margin-bottom: var(--space-md);
}

.seek-bar {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-md);
  background-color: var(--color-neutral-300);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  /* Ensure minimum 44px interactive height */
  padding: 19px 0;
  -webkit-padding-before: 19px;
  -webkit-padding-after: 19px;
}

/* Webkit browsers (Chrome, Safari) */
.seek-bar::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  border: 2px solid white;
}

.seek-bar::-webkit-slider-thumb:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.seek-bar::-webkit-slider-thumb:focus {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2), var(--shadow-md);
}

/* Firefox */
.seek-bar::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: var(--shadow-md);
}

.seek-bar::-moz-range-thumb:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.seek-bar::-moz-range-thumb:focus {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2), var(--shadow-md);
}

.seek-bar:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.time-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-family: var(--font-family-mono);
}

/* ─── Volume Control ──────────────────────────────────────────────────────– */

.volume-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: 44px;
  flex-wrap: wrap;
}

.volume-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.volume-slider {
  flex: 0 0 140px;
  height: 6px;
  border-radius: var(--radius-md);
  background-color: var(--color-neutral-300);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  /* Ensure minimum 44px interactive height */
  padding: 19px 0;
  -webkit-padding-before: 19px;
  -webkit-padding-after: 19px;
  min-height: 44px;
}

.volume-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  border: 2px solid white;
}

.volume-slider::-webkit-slider-thumb:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
}

.volume-slider::-webkit-slider-thumb:focus {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2), var(--shadow-md);
}

.volume-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: var(--shadow-md);
}

.volume-slider::-moz-range-thumb:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
}

.volume-slider::-moz-range-thumb:focus {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2), var(--shadow-md);
}

.volume-slider:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.volume-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  min-width: 40px;
  text-align: right;
  font-family: var(--font-family-mono);
}

/* ─── Error and Fallback Panel ────────────────────────────────────────────── */

.player-error,
[role="alert"] {
  padding: var(--space-lg);
  background-color: #fef2f2;
  border: 2px solid var(--color-danger);
  border-radius: var(--radius-md);
  color: #7f1d1d;
}

.player-error h3,
[role="alert"] h3 {
  color: #991b1b;
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-size: var(--font-size-lg);
}

.player-error p,
[role="alert"] p {
  margin-bottom: var(--space-md);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
}

.player-error a,
[role="alert"] a {
  color: #991b1b;
  font-weight: var(--font-weight-semibold);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.player-error a:hover,
[role="alert"] a:hover {
  color: #7f1d1d;
  text-decoration-thickness: 2px;
}

.player-error a:focus,
[role="alert"] a:focus {
  outline: 3px solid var(--color-danger);
  outline-offset: 2px;
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-danger);
  color: white;
  text-decoration: none;
  border: 2px solid var(--color-danger);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
}

.download-link:hover {
  background-color: #b91c1c;
  border-color: #991b1b;
  box-shadow: var(--shadow-md);
}

.download-link:focus {
  outline: 3px solid white;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px var(--color-danger);
}

.download-link:active {
  transform: scale(0.98);
}

/* ─── Mobile Adjustments ────────────────────────────────────────────────────── */

@media (max-width: 767px) {
  .media-player-container {
    padding: var(--space-md);
  }

  .control-buttons {
    flex-wrap: wrap;
  }

  .time-display {
    flex: 1;
    order: 3;
  }

  .play-pause-btn {
    flex: 0 0 auto;
    order: 1;
  }

  .volume-container {
    flex: 1;
    order: 2;
  }

  .seek-container {
    order: 4;
    width: 100%;
  }
}

/* ─── Tablet Adjustments ────────────────────────────────────────────────────── */

@media (min-width: 768px) {
  .media-controls {
    gap: var(--space-lg);
  }

  .control-buttons {
    gap: var(--space-lg);
    align-items: center;
  }
}

/* ─── High Contrast Mode ────────────────────────────────────────────────────– */

@media (prefers-contrast: more) {
  .play-pause-btn,
  .control-btn,
  .seek-bar,
  .volume-slider {
    border: 2px solid currentColor;
  }

  .player-error,
  [role="alert"] {
    border: 3px solid currentColor;
  }
}

/* ─── Reduced Motion ────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .spinner,
  .play-pause-btn,
  .control-btn,
  .download-link {
    animation: none;
    transition: none;
  }
}