/* Track Info Section */
.track-info {
  text-align: center;
  margin: var(--spacing-xl) 0;
}

.album-art-container {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-lg);
}

.album-art {
  width: 180px;
  height: 180px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  position: relative;
}

.album-art::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0.1;
  border-radius: var(--radius-xl);
}

.album-art-placeholder {
  z-index: 1;
}

/* Playing Indicator */
.playing-indicator {
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 3px;
  padding: 6px 12px;
  background: var(--accent-purple);
  border-radius: 12px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.playing-indicator.active {
  opacity: 1;
}

.playing-indicator span {
  width: 3px;
  height: 12px;
  background: white;
  border-radius: 2px;
  animation: soundBar 0.5s ease-in-out infinite;
}

.playing-indicator span:nth-child(1) { animation-delay: 0s; }
.playing-indicator span:nth-child(2) { animation-delay: 0.1s; }
.playing-indicator span:nth-child(3) { animation-delay: 0.2s; }

@keyframes soundBar {
  0%, 100% { transform: scaleY(0.5); }
  50% { transform: scaleY(1); }
}

/* Track Details */
.track-details {
  max-width: 400px;
  margin: 0 auto;
}

.track-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-artist {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-meta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

.listeners-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.listeners-icon {
  font-size: 0.875rem;
}

/* Controls Container */
.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* Mini Player (Fixed Bottom) */
.mini-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  z-index: 100;
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.mini-player.visible {
  transform: translateY(0);
}

.mini-player-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.mini-art {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

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

.mini-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.mini-play-btn {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border: none;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.mini-play-btn:hover {
  transform: scale(1.1);
}

.mini-progress {
  height: 3px;
  background: var(--bg-card);
  position: relative;
}

.mini-progress-bar {
  height: 100%;
  background: var(--accent-cyan);
  width: 0%;
  transition: width 0.5s linear;
}

/* Library Styles */
.library-header {
  margin-bottom: var(--spacing-lg);
}

.library-header h2 {
  margin-bottom: var(--spacing-md);
}

.library-filters {
  display: flex;
  gap: var(--spacing-sm);
}

.track-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.track-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.track-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent-purple);
  transform: translateX(4px);
}

.track-item-art {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

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

.track-item-title {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-item-artist {
  font-size: 0.875rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-item-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.track-item-play {
  width: 36px;
  height: 36px;
  background: var(--accent-purple);
  border: none;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.track-item:hover .track-item-play {
  opacity: 1;
}

.track-item-play:hover {
  transform: scale(1.1);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-hint {
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
  opacity: 0.7;
}

/* Responsive Player */
@media (min-width: 640px) {
  .album-art {
    width: 220px;
    height: 220px;
    font-size: 5rem;
  }
  
  .track-title {
    font-size: 2rem;
  }
  
  .track-artist {
    font-size: 1.125rem;
  }
  
  .controls {
    gap: var(--spacing-xl);
  }
  
  .control-btn {
    width: 56px;
    height: 56px;
  }
  
  .play-btn {
    width: 72px;
    height: 72px;
  }
}