/* ==================== Lab Zone MVP Styles ==================== */
/* Deep purple aesthetic - Technical workshop feel */
/* The Lab: Where raw audio becomes usable material */

:root {
  /* Lab Zone Color Palette */
  --lab-bg-deep: #1a0a2e;
  --lab-bg-panel: #251240;
  --lab-bg-card: #2d1650;
  --lab-primary: #a855f7;      /* Electric purple */
  --lab-secondary: #c084fc;    /* Light purple */
  --lab-accent: #e879f9;       /* Pink/magenta accent */
  --lab-cyan: #22d3ee;         /* Cyan highlights */
  --lab-success: #22c55e;      /* Green for complete */
  --lab-border: rgba(168, 85, 247, 0.3);
  --lab-glow: rgba(168, 85, 247, 0.4);
}

/* ==================== Lab Zone Container ==================== */
.lab-zone {
  min-height: 100%;
  padding: 20px;
  background: 
    radial-gradient(ellipse at 50% 0%, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(232, 121, 249, 0.1) 0%, transparent 40%),
    var(--lab-bg-deep);
  position: relative;
  overflow-y: auto;
}

/* Grid background effect - REMOVED (Jobs audit: decorative) */

/* ==================== Lab Header ==================== */
.lab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  margin-bottom: 24px;
  background: #4a2870 !important;
  border: 2px solid #a855f7 !important;
  border-radius: 16px;
  position: relative;
  z-index: 1;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* Scanning line effect - REMOVED (Jobs audit: decorative) */

.lab-branding {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lab-icon {
  font-size: 42px;
  filter: drop-shadow(0 0 8px var(--lab-glow));
  /* Animation removed (Jobs audit: ambient movement) */
}

.lab-titles {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lab-title {
  font-family: var(--font-mono, monospace);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--lab-primary);
  text-shadow: 0 0 20px var(--lab-glow);
  margin: 0;
}

.lab-subtitle {
  font-size: 12px;
  color: var(--lab-secondary);
  letter-spacing: 1px;
  opacity: 0.8;
}

.lab-queue-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid var(--lab-border);
  border-radius: 20px;
}

.lab-queue-badge .queue-icon {
  font-size: 16px;
  /* Spin animation kept - functional progress indicator */
  animation: spin 2s linear infinite;
}

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

.lab-queue-badge .queue-count {
  font-size: 18px;
  font-weight: 700;
  color: var(--lab-primary);
}

.lab-queue-badge .queue-label {
  font-size: 12px;
  color: var(--lab-secondary);
}

/* ==================== Lab Content ==================== */
.lab-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  z-index: 1;
}

/* ==================== Lab Sections ==================== */
.lab-section {
  background: #3d2060 !important;
  border: 2px solid #c084fc !important;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* ==================== Track Loader ==================== */
.track-loader {
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.loader-dropzone {
  width: 100%;
  max-width: 500px;
  padding: 60px 40px;
  border: 4px solid #e879f9 !important;
  border-radius: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  background: #4a2870 !important;
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.4), 0 4px 24px rgba(0, 0, 0, 0.5);
}

.loader-dropzone:hover,
.loader-dropzone.dragover {
  border-color: var(--lab-primary);
  background: rgba(168, 85, 247, 0.1);
  transform: scale(1.02);
}

.loader-dropzone.dragover {
  box-shadow: 0 0 40px var(--lab-glow);
}

.dropzone-visual {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}

.dropzone-icon {
  font-size: 64px;
  position: relative;
  z-index: 1;
}

/* Dropzone pulse animation - REMOVED (Jobs audit: decorative) */
.dropzone-pulse {
  display: none;
}

.dropzone-text h3 {
  font-size: 22px;
  color: #ffffff !important;
  margin: 0 0 12px 0;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.dropzone-text p {
  font-size: 15px;
  color: #c4b5fd !important;
  margin: 0;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.loader-or {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 500px;
}

.loader-or::before,
.loader-or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(168, 85, 247, 0.4);
}

.loader-or span {
  font-size: 12px;
  color: #a78bfa !important;
  text-transform: uppercase;
  letter-spacing: 3px;
}

.loader-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 500px;
}

.loader-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, #7c3aed, #a855f7) !important;
  border: none !important;
  border-radius: 12px;
  color: #ffffff !important;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}

.loader-btn:hover {
  background: linear-gradient(135deg, #8b5cf6, #c084fc) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.5);
}

.loader-btn .btn-icon {
  font-size: 20px;
}

.loader-url {
  display: flex;
  width: 100%;
  gap: 8px;
}

.loader-url input {
  flex: 1;
  padding: 14px 18px;
  background: var(--lab-bg-deep);
  border: 1px solid var(--lab-border);
  border-radius: 10px;
  color: var(--text, #fff);
  font-size: 14px;
}

.loader-url input::placeholder {
  color: rgba(192, 132, 252, 0.5);
}

.loader-url input:focus {
  outline: none;
  border-color: var(--lab-primary);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
}

.url-go-btn {
  padding: 14px 18px;
  background: var(--lab-primary);
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.2s;
}

.url-go-btn:hover {
  background: var(--lab-accent);
  transform: scale(1.05);
}

.loader-recent {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.recent-label {
  font-size: 12px;
  color: var(--lab-secondary);
}

.recent-track {
  padding: 6px 12px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid var(--lab-border);
  border-radius: 16px;
  color: var(--lab-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.recent-track:hover {
  background: rgba(168, 85, 247, 0.3);
  border-color: var(--lab-primary);
  color: var(--lab-primary);
}

/* ==================== Loaded Track ==================== */
.loaded-track {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 20px;
  padding: 24px;
  align-items: center;
  position: relative;
}

.track-visual {
  position: relative;
  width: 120px;
  height: 120px;
}

.track-artwork {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid var(--lab-border);
}

.track-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 32px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}

.track-visual:hover .track-play-btn {
  opacity: 1;
}

.track-waveform-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.track-waveform {
  height: 80px;
  background: rgba(168, 85, 247, 0.1);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
}

.waveform-bars {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 2px;
  padding: 0 10px;
}

.wf-bar {
  flex: 1;
  background: linear-gradient(0deg, var(--lab-primary) 0%, var(--lab-accent) 100%);
  border-radius: 2px;
  min-width: 2px;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.track-waveform:hover .wf-bar {
  opacity: 1;
}

.waveform-time {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-family: var(--font-mono, monospace);
  color: var(--lab-secondary);
}

.track-info {
  text-align: right;
}

.track-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text, #fff);
  margin: 0 0 4px 0;
}

.track-artist {
  font-size: 14px;
  color: var(--lab-secondary);
  margin: 0 0 12px 0;
}

.track-meta {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.meta-tag {
  padding: 4px 10px;
  background: rgba(168, 85, 247, 0.2);
  border-radius: 12px;
  font-size: 11px;
  font-family: var(--font-mono, monospace);
  color: var(--lab-secondary);
}

.meta-tag.bpm { color: var(--lab-cyan); }
.meta-tag.key { color: var(--lab-accent); }

.track-clear-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: var(--lab-secondary);
  font-size: 16px;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.2s;
}

.track-clear-btn:hover {
  opacity: 1;
  background: rgba(255, 100, 100, 0.3);
  color: #ff6b6b;
}

/* ==================== Stem Panel ==================== */
.stem-panel {
  padding: 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text, #fff);
  margin: 0;
}

.panel-icon {
  font-size: 24px;
}

/* Stem Checkboxes */
.stem-checkboxes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stem-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--lab-bg-deep);
  border: 2px solid var(--lab-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.stem-checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.stem-checkbox:hover {
  border-color: var(--stem-color, var(--lab-primary));
  background: rgba(168, 85, 247, 0.1);
}

.stem-checkbox.checked {
  border-color: var(--stem-color, var(--lab-primary));
  background: rgba(168, 85, 247, 0.15);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
}

.stem-icon {
  font-size: 28px;
}

.stem-label {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--text, #fff);
}

.stem-check {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--stem-color, var(--lab-primary));
  border-radius: 50%;
  font-size: 14px;
  color: white;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s;
}

.stem-checkbox.checked .stem-check {
  opacity: 1;
  transform: scale(1);
}

/* Quality Selector */
.quality-selector {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding: 16px;
  background: rgba(168, 85, 247, 0.05);
  border-radius: 12px;
}

.quality-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--lab-secondary);
}

.quality-options {
  display: flex;
  gap: 8px;
  flex: 1;
}

.quality-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px;
  background: var(--lab-bg-deep);
  border: 1px solid var(--lab-border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.quality-btn:hover {
  border-color: var(--lab-primary);
}

.quality-btn.active {
  border-color: var(--lab-primary);
  background: rgba(168, 85, 247, 0.2);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
}

.quality-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text, #fff);
}

.quality-time {
  font-size: 11px;
  color: var(--lab-secondary);
}

/* Panel Footer */
.panel-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.cost-display {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: rgba(168, 85, 247, 0.1);
  border-radius: 20px;
}

.cost-icon {
  font-size: 20px;
}

.cost-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--lab-primary);
}

.cost-label {
  font-size: 12px;
  color: var(--lab-secondary);
}

.split-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--lab-primary) 0%, var(--lab-accent) 100%);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4);
}

.split-btn:hover:not(.disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(168, 85, 247, 0.5);
}

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

.split-btn .btn-icon {
  font-size: 20px;
}

.panel-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--lab-secondary);
}

.info-icon {
  font-size: 14px;
}

/* ==================== Queue Panel ==================== */
.queue-panel {
  padding: 24px;
}

.queue-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.queue-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  background: var(--lab-bg-deep);
  border: 1px solid var(--lab-border);
  border-radius: 12px;
}

.queue-item.processing {
  border-color: var(--lab-primary);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
}

.queue-item-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.queue-item-icon {
  font-size: 24px;
  /* Bob animation removed (Jobs audit: ambient movement) */
}

.queue-item-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.queue-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text, #fff);
}

.queue-item-stems {
  font-size: 12px;
  color: var(--lab-secondary);
}

.queue-item-progress {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-bar {
  height: 6px;
  background: var(--lab-bg-panel);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--lab-primary), var(--lab-accent));
  border-radius: 3px;
  transition: width 0.3s ease;
  position: relative;
}

/* Shimmer animation - REMOVED (Jobs audit: decorative) */

.progress-text {
  font-size: 12px;
  color: var(--lab-secondary);
}

.queue-item-waiting {
  font-size: 12px;
  color: var(--lab-secondary);
  font-style: italic;
}

/* ==================== Completed Panel ==================== */
.completed-panel {
  padding: 24px;
}

.view-all-btn {
  padding: 6px 12px;
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid var(--lab-border);
  border-radius: 16px;
  color: var(--lab-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.view-all-btn:hover {
  background: rgba(168, 85, 247, 0.3);
  border-color: var(--lab-primary);
}

.completed-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.completed-item {
  background: var(--lab-bg-deep);
  border: 1px solid var(--lab-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.completed-item.expanded {
  border-color: var(--lab-success);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
}

.completed-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

.completed-item-header:hover {
  background: rgba(168, 85, 247, 0.05);
}

.completed-item-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.completed-icon {
  font-size: 24px;
}

.completed-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.completed-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text, #fff);
}

.completed-time {
  font-size: 11px;
  color: var(--lab-secondary);
}

.expand-arrow {
  font-size: 12px;
  color: var(--lab-secondary);
  transition: transform 0.2s;
}

.completed-item.expanded .expand-arrow {
  color: var(--lab-success);
}

/* Expanded Stem Cards */
.completed-item-stems {
  padding: 0 16px 16px 16px;
  border-top: 1px solid var(--lab-border);
}

.stem-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  padding: 16px 0;
}

.stem-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  background: var(--lab-bg-panel);
  border: 1px solid var(--lab-border);
  border-radius: 12px;
  transition: all 0.2s;
}

.stem-card:hover {
  border-color: var(--stem-color, var(--lab-primary));
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.15);
}

.stem-card-icon {
  font-size: 32px;
}

.stem-card-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text, #fff);
}

.stem-card-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.stem-preview-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--stem-color, var(--lab-primary));
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.stem-preview-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 15px var(--stem-color, var(--lab-glow));
}

.stem-select {
  width: 20px;
  height: 20px;
  accent-color: var(--lab-primary);
  cursor: pointer;
}

/* ==================== Stem Mixer ==================== */
.stem-mixer {
  background: rgba(20, 10, 40, 0.8);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
}

.mixer-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(168, 85, 247, 0.2);
}

.mixer-icon {
  font-size: 24px;
}

.mixer-title {
  font-size: 14px;
  font-weight: 600;
  color: #c4b5fd;
  flex: 1;
}

.mixer-play-all {
  padding: 8px 16px;
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.mixer-play-all:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(168, 85, 247, 0.4);
}

.mixer-play-all.playing {
  background: linear-gradient(135deg, #dc2626, #ef4444);
}

.mixer-tracks {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mixer-track {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(30, 15, 50, 0.6);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: 8px;
  border-left: 3px solid var(--stem-color, #a855f7);
}

.mixer-track-info {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 100px;
}

.mixer-track-icon {
  font-size: 18px;
}

.mixer-track-name {
  font-size: 13px;
  font-weight: 500;
  color: #e9d5ff;
}

.mixer-track-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.mixer-solo,
.mixer-mute {
  width: 28px;
  height: 28px;
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 6px;
  background: rgba(168, 85, 247, 0.1);
  color: #a78bfa;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.mixer-solo:hover,
.mixer-mute:hover {
  background: rgba(168, 85, 247, 0.2);
  border-color: #a855f7;
}

.mixer-solo.active {
  background: #eab308;
  border-color: #eab308;
  color: #000;
}

.mixer-mute.active {
  background: #ef4444;
  border-color: #ef4444;
  color: #fff;
}

.mixer-volume {
  flex: 1;
  max-width: 120px;
  height: 6px;
  -webkit-appearance: none;
  background: rgba(168, 85, 247, 0.2);
  border-radius: 3px;
  outline: none;
}

.mixer-volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: #a855f7;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
}

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

.mixer-preview {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 50%;
  background: rgba(168, 85, 247, 0.1);
  color: #c4b5fd;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.mixer-preview:hover {
  background: rgba(168, 85, 247, 0.3);
  border-color: #a855f7;
  transform: scale(1.1);
}

/* Voice Transform Button */
.mixer-transform {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(232, 121, 249, 0.4);
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(232, 121, 249, 0.15), rgba(168, 85, 247, 0.1));
  color: #e879f9;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s;
  position: relative;
}

.mixer-transform::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e879f9, #a855f7);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.25s;
}

.mixer-transform:hover {
  background: linear-gradient(135deg, rgba(232, 121, 249, 0.3), rgba(168, 85, 247, 0.2));
  border-color: #e879f9;
  transform: scale(1.15);
  box-shadow: 0 0 20px rgba(232, 121, 249, 0.4);
}

.mixer-transform:hover::after {
  opacity: 0.3;
}

/* Rhythm Chop Button */
.mixer-chop {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(6, 182, 212, 0.1));
  color: #22d3ee;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s;
}

.mixer-chop:hover {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.3), rgba(6, 182, 212, 0.2));
  border-color: #22d3ee;
  transform: scale(1.15);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.4);
}

.mixer-track .stem-select {
  margin-left: auto;
  width: 18px;
  height: 18px;
  accent-color: #a855f7;
}

/* Action Buttons */
.completed-item-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid var(--lab-border);
  border-radius: 10px;
  color: var(--text, #fff);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn:hover {
  background: rgba(168, 85, 247, 0.25);
  border-color: var(--lab-primary);
  transform: translateY(-2px);
}

.action-btn.save-crates:hover {
  background: rgba(255, 140, 66, 0.2);
  border-color: #ff8c42;
}

.action-btn.publish-vault:hover {
  background: rgba(255, 215, 0, 0.2);
  border-color: #ffd700;
}

.action-btn .btn-icon {
  font-size: 16px;
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .lab-zone {
    padding: 12px;
  }
  
  .lab-header {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 16px;
  }
  
  .loaded-track {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }
  
  .track-visual {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
    height: auto;
    aspect-ratio: 1;
  }
  
  .track-info {
    text-align: center;
  }
  
  .track-meta {
    justify-content: center;
  }
  
  .stem-checkboxes {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .quality-selector {
    flex-direction: column;
    align-items: stretch;
  }
  
  .panel-footer {
    flex-direction: column;
  }
  
  .split-btn {
    width: 100%;
    justify-content: center;
  }
  
  .stem-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .completed-item-actions {
    flex-direction: column;
  }
  
  .action-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ==================== Animations ==================== */
/* Simplified fade (Jobs audit: kept but simplified, no stagger) */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lab-section {
  animation: fadeIn 0.15s ease-out;
}

/* ==================== Lab Zone Scroll Fix ==================== */

/* Allow dig-space to scroll in Lab zone */
.zone-lab .dig-space,
.zone-lab #dig-space {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

/* Allow scrolling in card-space when Lab is active */
.zone-lab #card-space,
.zone-lab .card-space {
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  inset: auto;
  height: auto;
  min-height: 100%;
  padding: 20px;
  padding-bottom: 120px; /* Space for bottom nav */
}

/* Hide bleed-through elements in Lab zone */
.zone-lab .dig-empty,
.zone-lab #dig-empty,
.zone-lab .discover-header,
.zone-lab .discover-tabs,
.zone-lab .discover-filters,
.zone-lab .collection-header,
.zone-lab #dig-loading {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Ensure lab-zone takes full space and scrolls */
.zone-lab .lab-zone {
  min-height: auto;
  padding-bottom: 40px;
}

/* ==================== Quick Pack Builder (Inline) ==================== */
.quick-pack-builder {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.1), rgba(168, 85, 247, 0.15));
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 12px;
  padding: 16px;
  margin-top: 12px;
}

.quick-pack-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--lab-cyan);
}

.quick-pack-icon {
  font-size: 1.2em;
}

.quick-pack-title {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.quick-pack-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quick-pack-name {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--lab-border);
  border-radius: 8px;
  padding: 10px 12px;
  color: white;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.quick-pack-name:focus {
  border-color: var(--lab-cyan);
}

.quick-pack-price-row {
  display: flex;
  gap: 8px;
}

.price-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--lab-border);
  border-radius: 8px;
  padding: 0 12px;
}

.price-symbol {
  color: var(--lab-success);
  font-weight: 600;
  margin-right: 4px;
}

.quick-pack-price {
  flex: 1;
  background: transparent;
  border: none;
  color: white;
  font-size: 0.95rem;
  font-family: inherit;
  padding: 10px 0;
  outline: none;
  width: 60px;
}

.quick-pack-price::-webkit-inner-spin-button,
.quick-pack-price::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.free-toggle {
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--lab-border);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.free-toggle:hover {
  border-color: var(--lab-success);
  color: var(--lab-success);
}

.free-toggle.active {
  background: rgba(34, 197, 94, 0.2);
  border-color: var(--lab-success);
  color: var(--lab-success);
}

.price-hint {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: -4px;
  padding-left: 4px;
}

.quick-pack-cover {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 8px auto;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--lab-border);
}

.cover-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.regenerate-cover-btn {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.regenerate-cover-btn:hover {
  background: rgba(0, 0, 0, 0.9);
  border-color: var(--lab-cyan);
  transform: rotate(180deg);
}

.quick-pack-genre {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--lab-border);
  border-radius: 8px;
  padding: 10px 12px;
  color: white;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

.quick-pack-genre option {
  background: var(--lab-bg-panel);
  color: white;
}

.quick-pack-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.quick-pack-meta .meta-tag {
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.3);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--lab-secondary);
}

.quick-publish-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--lab-cyan), var(--lab-primary));
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 4px;
}

.quick-publish-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(34, 211, 238, 0.3);
}

.quick-publish-btn:active {
  transform: translateY(0);
}

.quick-publish-btn .btn-icon {
  font-size: 1.1em;
}

/* Secondary actions row */
.completed-item-actions.secondary {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.completed-item-actions.secondary .action-btn {
  flex: 1;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
}

.completed-item-actions.secondary .action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}