/* ==========================================================================
   Practice Mode — Web Audio Multi-Stem & Synced Tablature Engine
   The Shady River Bard Portal
   ========================================================================== */

:root {
  --bg-dark: #0a0807;
  --bg-panel: #14110e;
  --bg-card: #1c1814;
  --bg-card-hover: #26211c;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-amber: rgba(245, 158, 11, 0.4);
  
  --stem-vocal: #f59e0b;
  --stem-drums: #ef4444;
  --stem-bass: #a855f7;
  --stem-other: #10b981;
}

/* Custom Scrollbars */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(12, 10, 9, 0.6);
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: #292524;
  border-radius: 9999px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: #44403c;
}

/* Slider Track Customization */
input[type="range"].stem-slider {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
input[type="range"].stem-slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 9999px;
  background: #26211c;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
input[type="range"].stem-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 16px;
  width: 16px;
  border-radius: 50%;
  margin-top: -5px;
  border: 2px solid #0c0a09;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
input[type="range"].stem-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Stem Thumb Colors */
input[type="range"].vocal-slider::-webkit-slider-thumb {
  background: var(--stem-vocal);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}
input[type="range"].drums-slider::-webkit-slider-thumb {
  background: var(--stem-drums);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}
input[type="range"].bass-slider::-webkit-slider-thumb {
  background: var(--stem-bass);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
}
input[type="range"].other-slider::-webkit-slider-thumb {
  background: var(--stem-other);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}
input[type="range"].master-slider::-webkit-slider-thumb {
  background: #f59e0b;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.6);
}

/* Real-Time VU Meter Bars */
.vu-meter-bg {
  position: relative;
  background: #171412;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.vu-meter-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  border-radius: 3px;
  transition: width 0.05s ease-out;
  background: linear-gradient(90deg, #10b981 0%, #10b981 60%, #f59e0b 80%, #ef4444 95%);
}

/* Tablature & Chords Typography */
.tab-monospace {
  font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  font-variant-ligatures: none;
}

/* Interactive Chord Tokens */
.chord-token {
  position: relative;
  display: inline-block;
  cursor: pointer;
  padding: 0.1rem 0.25rem;
  border-radius: 4px;
  font-weight: 700;
  transition: all 0.15s ease-in-out;
  user-select: none;
}
.chord-token:hover {
  background: rgba(245, 158, 11, 0.25);
  color: #fef08a;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.chord-token.chord-active {
  background: #f59e0b !important;
  color: #0c0a09 !important;
  font-weight: 800;
  box-shadow: 0 0 14px rgba(245, 158, 11, 0.8), 0 0 2px #fff;
  transform: scale(1.08);
  animation: chordPulse 0.8s ease-in-out infinite alternate;
}

@keyframes chordPulse {
  0% { transform: scale(1.05); box-shadow: 0 0 10px rgba(245, 158, 11, 0.7); }
  100% { transform: scale(1.12); box-shadow: 0 0 18px rgba(245, 158, 11, 1); }
}

/* Tab Row Highlight */
.tab-row {
  border-left: 3px solid transparent;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  padding-left: 0.75rem;
}
.tab-row:hover {
  background: rgba(255, 255, 255, 0.02);
}
.tab-row.row-active {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0.03) 80%, transparent 100%);
  border-left-color: #f59e0b;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 0 20px -5px rgba(245, 158, 11, 0.2);
}
.tab-row.row-active .tab-lyric {
  color: #ffffff;
  font-weight: 500;
}

/* Section Header Badges */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: rgba(120, 53, 15, 0.3);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* Mute / Solo Button Toggle States */
.btn-mute.active {
  background: #dc2626 !important;
  color: #ffffff !important;
  border-color: #ef4444 !important;
  box-shadow: 0 0 10px rgba(220, 38, 38, 0.5);
}
.btn-solo.active {
  background: #d97706 !important;
  color: #0c0a09 !important;
  border-color: #f59e0b !important;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
  font-weight: 800;
}

/* Teleprompter HUD */
.hud-card {
  background: rgba(20, 17, 14, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(245, 158, 11, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* TV MODE OVERRIDES (Cast to Google TV) */
body.tv-mode {
  background: #000000 !important;
  color: #ffffff !important;
}
body.tv-mode .portal-header,
body.tv-mode .footer-section {
  display: none !important;
}
body.tv-mode #tv-mode-controls {
  display: flex !important;
}

body.tv-mode .mixer-container {
  padding: 0.75rem 1rem !important;
}
body.tv-mode .mixer-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
}
body.tv-mode .mixer-grid > div {
  padding: 0.5rem 0.75rem !important;
}
body.tv-mode #tab-container {
  max-height: 58vh !important;
}
body.tv-mode .tab-monospace {
  font-size: 1.45rem !important;
  line-height: 2.2 !important;
}
body.tv-mode .chord-token {
  font-size: 1.55rem !important;
  padding: 0.15rem 0.4rem;
}
body.tv-mode .tab-lyric {
  font-size: 1.6rem !important;
  line-height: 2 !important;
  color: #ffffff !important;
}
body.tv-mode .tab-row.row-active {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  border-left-width: 6px;
}
body.tv-mode .hud-current-chord {
  font-size: 3.5rem !important;
}
body.tv-mode .hud-next-chord {
  font-size: 2rem !important;
}
body.tv-mode .hud-lyric-preview {
  font-size: 1.75rem !important;
}

/* Floating Looper Loop In / Out Markers on Seekbar */
.seekbar-container {
  position: relative;
}
.loop-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3px;
  background: #38bdf8;
  pointer-events: none;
  z-index: 10;
}
.loop-marker::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #38bdf8;
}
.loop-region {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(56, 189, 248, 0.15);
  pointer-events: none;
  z-index: 5;
}