/**
 * player.css - Music Player Component Styles
 * Persistent audio player with controls and visualizations
 */

/* ==========================================================================
   PLAYER CONTAINER
   ========================================================================== */

.music-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--player-height);
  background: var(--player-bg);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-primary);
  z-index: var(--z-player);
  transition: var(--transition-transform);
  display: flex;
  flex-direction: column;
}

.music-player.minimized {
  transform: translateY(calc(var(--player-height) - var(--player-collapsed-height)));
}

/* Player Handle for Minimize/Maximize */
.player-handle {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 20px;
  background: var(--player-bg);
  border: 1px solid var(--border-primary);
  border-bottom: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-colors);
}

.player-handle:hover {
  background: var(--bg-hover);
}

.player-handle .handle-icon {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  transition: transform var(--duration-fast);
}

.music-player.minimized .handle-icon {
  transform: rotate(180deg);
}

/* ==========================================================================
   PLAYER CONTENT LAYOUT
   ========================================================================== */

.player-content {
  display: grid;
  grid-template-columns: 300px 1fr 300px;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-6);
  height: 100%;
  align-items: center;
}

/* ==========================================================================
   SONG INFO SECTION
   ========================================================================== */

.player-song-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0; /* Allow text truncation */
}

.player-album-art {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-tertiary);
  flex-shrink: 0;
  position: relative;
}

.player-album-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.album-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: var(--text-tertiary);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

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

.player-track-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: var(--space-1);
}

.player-track-artist {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   CONTROLS SECTION
   ========================================================================== */

.player-controls-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

/* Main Control Buttons */
.player-main-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.player-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-all);
  position: relative;
}

.player-btn:hover {
  background: var(--bg-hover);
  transform: scale(1.05);
}

.player-btn:active {
  transform: scale(0.95);
}

.player-btn.active {
  color: var(--color-primary);
}

/* Play/Pause Button - Larger */
.player-play-btn {
  width: 48px;
  height: 48px;
  background: var(--button-primary-bg);
  color: var(--text-inverse);
}

.player-play-btn:hover {
  background: var(--button-primary-bg);
  box-shadow: var(--shadow-primary);
  transform: scale(1.1);
}

/* Repeat Badge */
.repeat-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   PROGRESS BAR
   ========================================================================== */

.player-progress-section {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  max-width: 600px;
}

.player-time {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  min-width: 45px;
  text-align: center;
}

.player-progress-container {
  flex: 1;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  overflow: hidden;
}

.player-progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.1s linear;
  position: relative;
}

.player-progress-handle {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border: 2px solid var(--bg-primary);
  border-radius: var(--radius-full);
  cursor: grab;
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.player-progress-container:hover .player-progress-handle {
  opacity: 1;
}

.player-progress-handle:active {
  cursor: grabbing;
  transform: translate(-50%, -50%) scale(1.2);
}

/* ==========================================================================
   EXTRA CONTROLS
   ========================================================================== */

.player-extra-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

/* Volume Section */
.player-volume-section {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.player-volume-slider {
  width: 100px;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.player-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-transform);
}

.player-volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.player-volume-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  transition: var(--transition-transform);
}

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

/* Queue Section */
.player-queue-section {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.queue-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-secondary);
  color: var(--text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

.playback-rate-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   QUEUE PANEL
   ========================================================================== */

.player-queue-panel {
  position: absolute;
  bottom: 100%;
  right: var(--space-6);
  width: 350px;
  max-height: 400px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.queue-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  background: var(--bg-secondary);
}

.queue-header h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.queue-close-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition-colors);
}

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

.queue-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2);
}

.queue-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-colors);
}

.queue-item:hover {
  background: var(--bg-hover);
}

.queue-item.active {
  background: var(--bg-active);
  border-left: 3px solid var(--color-primary);
}

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

.queue-item-title {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.queue-item-artist {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.queue-item-remove {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: var(--transition-all);
}

.queue-item:hover .queue-item-remove {
  opacity: 1;
}

.queue-item-remove:hover {
  background: var(--bg-active);
  color: var(--color-secondary);
}

/* ==========================================================================
   LOADING STATE
   ========================================================================== */

.player-loading {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-primary);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: var(--animation-spin);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .player-content {
    grid-template-columns: 250px 1fr 200px;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
  }
  
  .player-progress-section {
    max-width: 400px;
  }
  
  .player-volume-slider {
    width: 80px;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .music-player {
    height: 140px;
  }
  
  .player-content {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    gap: var(--space-3);
    padding: var(--space-3);
  }
  
  .player-song-info {
    order: 1;
  }
  
  .player-controls-section {
    order: 2;
  }
  
  .player-extra-controls {
    order: 3;
    justify-content: center;
  }
  
  .player-progress-section {
    max-width: 100%;
  }
  
  .player-queue-panel {
    width: 100%;
    right: 0;
    left: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
  
  .player-handle {
    display: none;
  }
  
  .music-player.minimized {
    transform: translateY(136px);
  }
}

/* Small Mobile */
@media (max-width: 475px) {
  .player-main-controls {
    gap: var(--space-2);
  }
  
  .player-btn {
    width: 36px;
    height: 36px;
  }
  
  .player-play-btn {
    width: 44px;
    height: 44px;
  }
  
  .player-volume-section {
    display: none;
  }
  
  .playback-rate-text {
    display: none;
  }
}

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

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

/* Visualizer Animation */
@keyframes visualizer-pulse {
  0%, 100% { transform: scaleY(0.3); }
  50% { transform: scaleY(1); }
}

.visualizer-bar {
  animation: visualizer-pulse 1s ease-in-out infinite;
  animation-delay: calc(var(--bar-index) * 0.1s);
  transform-origin: bottom;
}