/* ==================== DJ Set Builder ==================== */

.dj-builder {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--sp-4);
}

/* Header */
.dj-header {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--clr-surface-2);
}

.dj-back {
  background: none;
  border: none;
  color: var(--clr-text-muted);
  cursor: pointer;
  font-size: 0.875rem;
  padding: var(--sp-2);
}

.dj-back:hover {
  color: var(--clr-text);
}

.dj-title-wrap {
  flex: 1;
}

.dj-title-input {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--clr-text);
  font-size: 1.5rem;
  font-weight: 700;
  width: 100%;
  padding: var(--sp-1) 0;
}

.dj-title-input:focus {
  outline: none;
  border-bottom-color: var(--clr-cyan);
}

.dj-stats {
  display: flex;
  gap: var(--sp-4);
}

.dj-stat {
  color: var(--clr-text-muted);
  font-size: 0.875rem;
}

/* Controls */
.dj-controls {
  display: flex;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
  flex-wrap: wrap;
}

.dj-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--clr-surface-1);
  border: 1px solid var(--clr-surface-2);
  border-radius: var(--radius);
  color: var(--clr-text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--dur-fast);
}

.dj-btn:hover:not(:disabled) {
  background: var(--clr-surface-2);
  border-color: var(--clr-cyan);
}

.dj-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.dj-btn-primary {
  background: var(--clr-cyan);
  border-color: var(--clr-cyan);
  color: var(--clr-void);
}

.dj-btn-primary:hover {
  background: var(--clr-cyan);
  filter: brightness(1.1);
}

.dj-crossfade {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-left: auto;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}

.dj-crossfade select {
  background: var(--clr-surface-1);
  border: 1px solid var(--clr-surface-2);
  border-radius: var(--radius);
  padding: var(--sp-1) var(--sp-2);
  color: var(--clr-text);
}

/* Track List */
.dj-tracklist {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.dj-empty {
  text-align: center;
  padding: var(--sp-12);
  color: var(--clr-text-muted);
}

.dj-empty-icon {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
}

.dj-empty h3 {
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
}

/* Track Item */
.dj-track {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3);
  background: var(--clr-surface-1);
  border-radius: var(--radius);
  border: 1px solid transparent;
  position: relative;
  transition: all var(--dur-fast);
}

.dj-track:hover {
  background: var(--clr-surface-2);
}

.dj-track.is-dragging {
  opacity: 0.5;
}

.dj-track.drop-above::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--clr-cyan);
  border-radius: 2px;
}

.dj-track.drop-below::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--clr-cyan);
  border-radius: 2px;
}

.dj-track-handle {
  cursor: grab;
  color: var(--clr-text-muted);
  padding: var(--sp-1);
  user-select: none;
}

.dj-track-handle:active {
  cursor: grabbing;
}

.dj-track-num {
  width: 24px;
  text-align: center;
  color: var(--clr-text-muted);
  font-size: 0.875rem;
}

.dj-track-art {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.dj-track-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

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

.dj-track-title {
  font-weight: 500;
  color: var(--clr-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.dj-track-meta {
  display: flex;
  gap: var(--sp-2);
}

.dj-track-bpm,
.dj-track-key {
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--clr-surface-2);
}

.dj-track-bpm.bpm-match { background: rgba(52, 211, 153, 0.2); color: var(--clr-green); }
.dj-track-bpm.bpm-close { background: rgba(250, 204, 21, 0.2); color: var(--clr-yellow); }
.dj-track-bpm.bpm-far { background: rgba(244, 114, 182, 0.2); color: var(--clr-pink); }

.dj-track-play,
.dj-track-remove {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--clr-surface-2);
  color: var(--clr-text);
  cursor: pointer;
  font-size: 0.875rem;
  opacity: 0;
  transition: all var(--dur-fast);
}

.dj-track:hover .dj-track-play,
.dj-track:hover .dj-track-remove {
  opacity: 1;
}

.dj-track-play:hover {
  background: var(--clr-cyan);
  color: var(--clr-void);
}

.dj-track-remove:hover {
  background: var(--clr-pink);
}

/* Transition Indicator */
.dj-transition {
  position: absolute;
  left: 50%;
  bottom: -20px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.7rem;
  color: var(--clr-text-muted);
  z-index: 1;
}

.dj-transition .transition-icon {
  color: var(--clr-cyan);
}

.dj-transition .bpm-diff {
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 0.65rem;
}

.dj-transition .bpm-diff.bpm-match { color: var(--clr-green); }
.dj-transition .bpm-diff.bpm-close { color: var(--clr-yellow); }
.dj-transition .bpm-diff.bpm-far { color: var(--clr-pink); }

/* Spacing for transition indicators */
.dj-track:not(:last-child) {
  margin-bottom: var(--sp-6);
}

/* Footer */
.dj-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--clr-surface-2);
}

/* Library Picker Modal */
.library-picker-modal .modal-content {
  max-width: 640px;
}

.picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-2);
  max-height: 400px;
  overflow-y: auto;
}

.picker-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2);
  background: var(--clr-surface-1);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--dur-fast);
}

.picker-item:hover:not(.is-added) {
  background: var(--clr-surface-2);
}

.picker-item.is-added {
  opacity: 0.6;
  cursor: default;
}

.picker-item img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 4px;
}

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

.picker-item-title {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.picker-item-artist {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
}

.picker-item-bpm {
  font-size: 0.7rem;
  background: var(--clr-surface-2);
  padding: 2px 4px;
  border-radius: 3px;
}

.picker-item-status {
  font-size: 1.25rem;
  color: var(--clr-cyan);
}

.picker-empty {
  text-align: center;
  padding: var(--sp-8);
  color: var(--clr-text-muted);
}

/* Responsive */
@media (max-width: 640px) {
  .dj-header {
    flex-wrap: wrap;
  }
  
  .dj-title-wrap {
    order: 2;
    width: 100%;
  }
  
  .dj-controls {
    flex-direction: column;
  }
  
  .dj-crossfade {
    margin-left: 0;
    width: 100%;
    justify-content: space-between;
  }
  
  .dj-track-meta {
    display: none;
  }
}