/* ==========================================================================
   CYBER DEMO MUSIC - MODERN CYBERPUNK & DEMOSCENE STYLESHEET
   ========================================================================== */

:root {
  --bg-primary: #060810;
  --bg-secondary: #0c101d;
  --bg-panel: rgba(12, 17, 32, 0.78);
  --bg-panel-hover: rgba(18, 25, 48, 0.85);
  --bg-glass: rgba(10, 15, 30, 0.65);
  
  --cyber-cyan: #00f3ff;
  --cyber-cyan-glow: rgba(0, 243, 255, 0.35);
  --cyber-magenta: #ff0055;
  --cyber-magenta-glow: rgba(255, 0, 85, 0.35);
  --cyber-yellow: #ffe600;
  --cyber-yellow-glow: rgba(255, 230, 0, 0.3);
  --cyber-green: #00ff66;
  --cyber-green-glow: rgba(0, 255, 102, 0.3);
  --cyber-purple: #9d00ff;
  --cyber-orange: #ff7700;
  
  --text-main: #e2f1ff;
  --text-dim: #7e9bb5;
  --text-muted: #4a637d;
  --border-cyber: rgba(0, 243, 255, 0.25);
  --border-bright: rgba(0, 243, 255, 0.7);
  --border-magenta: rgba(255, 0, 85, 0.4);
  
  --font-cyber: 'Rajdhani', 'Orbitron', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', Courier, monospace;
  --font-display: 'Orbitron', 'Rajdhani', sans-serif;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Safe Area Insets & Display Rounded Corner Offsets */
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  
  --corner-pad-top: max(8px, calc(env(safe-area-inset-top, 0px) + 4px));
  --corner-pad-bottom: max(10px, calc(env(safe-area-inset-bottom, 0px) + 6px));
  --corner-pad-left: max(14px, calc(env(safe-area-inset-left, 0px) + 8px));
  --corner-pad-right: max(14px, calc(env(safe-area-inset-right, 0px) + 8px));
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-cyber);
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

/* Background 3D Canvas */
#scene-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: auto;
  transform: translateZ(0);
  will-change: transform;
}

#scene-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#master-scope-canvas,
.ch-scope-canvas {
  transform: translateZ(0);
  image-rendering: -webkit-optimize-contrast;
}

/* CRT Scanline & Retro Phosphor Screen Overlay */
.scanlines-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  background: 
    linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.42) 50%),
    linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.04)),
    radial-gradient(circle at center, transparent 60%, rgba(0, 0, 0, 0.55) 100%);
  background-size: 100% 4px, 6px 100%, 100% 100%;
}

.scanlines-overlay.crt-flicker,
.scanlines-overlay.crt-active {
  opacity: 1;
  visibility: visible;
  animation: crtScanlineScroll 16s linear infinite, crtSubtleFlicker 0.15s infinite;
}

@keyframes crtScanlineScroll {
  0% { background-position: 0 0, 0 0, 0 0; }
  100% { background-position: 0 100%, 0 0, 0 0; }
}

@keyframes crtSubtleFlicker {
  0% { opacity: 0.98; }
  50% { opacity: 0.90; }
  100% { opacity: 0.96; }
}

.vignette-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 60%, rgba(3, 5, 12, 0.85) 100%);
}

/* App Layout Grid */
#app {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr 390px;
  grid-template-areas:
    "header header"
    "main playlist"
    "footer footer";
  width: 100vw;
  height: 100vh;
  backdrop-filter: blur(2px);
}

/* Fullscreen Stage Mode */
#app.fullscreen-visualizer {
  grid-template-columns: 1fr 0px;
}
#app.fullscreen-visualizer #playlist-sidebar {
  display: none;
}

/* HEADER HUD */
#header-hud {
  grid-area: header;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(8px, calc(env(safe-area-inset-top, 0px) + 4px)) max(18px, calc(env(safe-area-inset-right, 0px) + 14px)) 8px max(18px, calc(env(safe-area-inset-left, 0px) + 14px));
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-cyber);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 1px 0 var(--cyber-cyan-glow);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-glitch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 0 10px var(--cyber-cyan);
}

.logo-badge {
  background: linear-gradient(135deg, var(--cyber-magenta), var(--cyber-purple));
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: 1px;
  font-weight: bold;
  text-transform: uppercase;
  box-shadow: 0 0 10px var(--cyber-magenta-glow);
}

.hud-sys-status {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.hud-stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 243, 255, 0.05);
  padding: 4px 10px;
  border: 1px solid rgba(0, 243, 255, 0.15);
  border-radius: var(--radius-sm);
}

.hud-stat-item .stat-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.hud-stat-item .stat-val {
  color: var(--cyber-cyan);
  font-weight: bold;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--cyber-green);
  box-shadow: 0 0 8px var(--cyber-green);
  animation: pulseDot 1.5s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cyber-btn {
  background: rgba(0, 243, 255, 0.08);
  border: 1px solid var(--border-cyber);
  color: var(--text-main);
  padding: 6px 12px;
  font-family: var(--font-cyber);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.cyber-btn:hover {
  background: rgba(0, 243, 255, 0.2);
  border-color: var(--cyber-cyan);
  color: #fff;
  box-shadow: 0 0 12px var(--cyber-cyan-glow);
  transform: translateY(-1px);
}

.cyber-btn:active {
  transform: translateY(1px);
}

.cyber-btn.active {
  background: rgba(0, 243, 255, 0.25);
  border-color: var(--cyber-cyan);
  color: var(--cyber-cyan);
  box-shadow: 0 0 15px var(--cyber-cyan-glow);
}

#btn-crt-toggle.active {
  background: rgba(0, 255, 136, 0.25);
  border-color: #00ff88;
  color: #00ff88;
  box-shadow: 0 0 16px rgba(0, 255, 136, 0.5);
  text-shadow: 0 0 8px rgba(0, 255, 136, 0.8);
}

.cyber-btn.btn-magenta {
  background: rgba(255, 0, 85, 0.1);
  border-color: var(--border-magenta);
}
.cyber-btn.btn-magenta:hover {
  background: rgba(255, 0, 85, 0.25);
  border-color: var(--cyber-magenta);
  box-shadow: 0 0 12px var(--cyber-magenta-glow);
}

.cyber-btn.btn-small {
  padding: 3px 8px;
  font-size: 0.75rem;
}

/* MAIN VISUALIZER STAGE */
#main-stage {
  grid-area: main;
  display: flex;
  flex-direction: column;
  padding: 12px 14px 12px max(18px, calc(env(safe-area-inset-left, 0px) + 12px));
  gap: 12px;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  box-sizing: border-box;
}

/* Top Stage HUD & Now Playing Bar */
.stage-hud-bar {
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  flex-shrink: 0;
  gap: 6px;
  min-width: 0;
  position: relative;
}

.stage-hud-row {
  display: flex;
  align-items: center;
  width: 100%;
  min-width: 0;
}

.stage-hud-top-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  flex-wrap: nowrap !important;
  gap: 10px !important;
  width: 100% !important;
  min-width: 0 !important;
  overflow: hidden !important;
}

.stage-title-wrap {
  display: flex !important;
  flex-direction: row !important;
  align-items: baseline !important;
  gap: 8px !important;
  min-width: 0 !important;
  flex: 1 1 auto !important;
  overflow: hidden !important;
  white-space: nowrap !important;
}

.format-badge-large {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: linear-gradient(135deg, rgba(0, 243, 255, 0.2), rgba(157, 0, 255, 0.2));
  border: 1px solid var(--cyber-cyan);
  color: var(--cyber-cyan);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.72rem !important;
  padding: 1px 6px !important;
  height: 20px !important;
  line-height: 1 !important;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  text-shadow: 0 0 6px var(--cyber-cyan);
  box-shadow: 0 0 8px var(--cyber-cyan-glow);
  flex-shrink: 0 !important;
  flex-grow: 0 !important;
  flex: 0 0 auto !important;
  width: auto !important;
  min-width: unset !important;
  max-width: fit-content !important;
  white-space: nowrap !important;
  box-sizing: border-box !important;
}

.format-badge-large[data-format="MOD"] { border-color: var(--cyber-yellow); color: var(--cyber-yellow); text-shadow: 0 0 6px var(--cyber-yellow); }
.format-badge-large[data-format="XM"] { border-color: var(--cyber-cyan); color: var(--cyber-cyan); }
.format-badge-large[data-format="S3M"] { border-color: var(--cyber-green); color: var(--cyber-green); text-shadow: 0 0 6px var(--cyber-green); }
.format-badge-large[data-format="IT"] { border-color: var(--cyber-magenta); color: var(--cyber-magenta); text-shadow: 0 0 6px var(--cyber-magenta); }
.format-badge-large[data-format="OGG"] { border-color: var(--cyber-purple); color: #c084fc; text-shadow: 0 0 6px #c084fc; }
.format-badge-large[data-format="V2M"] { border-color: #bf55ec; color: #d670fd; text-shadow: 0 0 6px rgba(191, 85, 236, 0.8); }
.track-format-tag[data-format="V2M"] { border-color: #bf55ec; color: #d670fd; background: rgba(191, 85, 236, 0.12); }

.track-title-live {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 0 1 auto;
  letter-spacing: 1px;
}

.track-artist-live {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--cyber-cyan);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 0 1 auto;
  opacity: 0.85;
}

.stage-hud-bottom-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 8px 12px;
  width: 100% !important;
  min-width: 0 !important;
  flex-wrap: wrap;
}

.stage-meta-actions {
  display: flex !important;
  align-items: center !important;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.group-tag {
  background: rgba(255, 0, 85, 0.15);
  border: 1px solid rgba(255, 0, 85, 0.4);
  color: #ff5588;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  white-space: nowrap;
  font-weight: 600;
}

.stage-scene-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.scene-select-hud {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: 2px;
  flex-shrink: 0;
}

.scene-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-cyber);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 7px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  white-space: nowrap;
}

.scene-btn:hover {
  color: #fff;
  background: rgba(0, 243, 255, 0.1);
}

.scene-btn.active {
  background: var(--cyber-cyan);
  color: #000;
  font-weight: bold;
  box-shadow: 0 0 10px var(--cyber-cyan-glow);
}

/* Master Scope & Pattern HUD Display (Fills vertical space down to channels) */
.master-visualizer-hud {
  flex: 1;
  min-height: 0;
  width: 100%;
  transition: all 0.25s ease;
}

#app.scope-hidden #master-visualizer-hud,
.master-visualizer-hud.scope-hidden {
  display: none !important;
}

#app.scope-hidden .channel-rack-section {
  margin-top: auto;
}

/* Compact Mode: Oscilloscope spans 100% width and 100% height with in-canvas HUD overlay */
.master-visualizer-hud.compact-hud-active {
  display: flex;
}

.master-visualizer-hud.compact-hud-active .master-scope-panel {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.master-visualizer-hud.compact-hud-active #tracker-pattern-container {
  display: none !important;
}

.master-visualizer-hud.compact-hud-active .compact-pattern-hud-overlay {
  display: flex !important;
}

/* Full Pattern Mode: Oscilloscope on left, Full Pattern on right (Side-by-Side), filling 100% vertical space */
.master-visualizer-hud.full-hud-active {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 12px;
  height: 100%;
  min-height: 0;
}

.master-visualizer-hud.full-hud-active .master-scope-panel {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.master-visualizer-hud.full-hud-active .compact-pattern-hud-overlay {
  display: none !important;
}

.master-visualizer-hud.full-hud-active #tracker-pattern-container {
  display: flex !important;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  width: 100%;
  overflow: hidden;
}

.master-scope-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-md);
  padding: 10px;
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.panel-header-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  border-bottom: 1px solid rgba(0, 243, 255, 0.1);
  padding-bottom: 4px;
}

.overlay-scope-toggle-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 4px;
  line-height: 1;
  transition: all 0.2s ease;
  border-radius: 2px;
}

.overlay-scope-toggle-btn:hover {
  color: var(--cyber-magenta) !important;
  text-shadow: 0 0 8px var(--cyber-magenta);
  transform: scale(1.15);
}

.scope-canvas-wrap {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 120px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

#master-scope-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ==========================================================================
   COMPACT PATTERN & ROW SYNC OVERLAY (Top-Right of Oscilloscope)
   ========================================================================== */
.compact-pattern-hud-overlay {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 10;
  background: rgba(6, 10, 20, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  min-width: 220px;
  max-width: 300px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6), inset 0 0 10px rgba(0, 243, 255, 0.05);
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  gap: 3px;
  pointer-events: auto;
  transition: all 0.25s ease;
}

.overlay-hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.7rem;
  border-bottom: 1px solid rgba(0, 243, 255, 0.15);
  padding-bottom: 3px;
}

.overlay-hud-badge {
  color: var(--cyber-cyan);
  font-weight: 800;
  font-size: 0.65rem;
}

.overlay-hud-ordpat {
  color: #fff;
  font-weight: 700;
  font-size: 0.7rem;
}

.overlay-expand-btn {
  background: rgba(0, 243, 255, 0.15);
  border: 1px solid var(--cyber-cyan);
  color: var(--cyber-cyan);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: bold;
  padding: 1px 5px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.overlay-expand-btn:hover {
  background: var(--cyber-cyan);
  color: #000;
  box-shadow: 0 0 8px var(--cyber-cyan-glow);
}

.overlay-hud-row {
  color: var(--cyber-yellow);
  font-size: 0.72rem;
  font-weight: bold;
}

.overlay-hud-footer {
  color: var(--text-muted);
  font-size: 0.62rem;
}

/* ==========================================================================
   FULL PATTERN MATRIX VIEW (FastTracker II Full Height)
   ========================================================================== */
.tracker-pattern-hud {
  background: var(--bg-panel);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-md);
  padding: 10px;
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}

.pattern-view-toggle {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: 1px;
  gap: 2px;
}

.pat-mode-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pat-mode-btn:hover {
  color: #fff;
  background: rgba(0, 243, 255, 0.1);
}

.pat-mode-btn.active {
  background: var(--cyber-cyan);
  color: #000;
  font-weight: bold;
  box-shadow: 0 0 6px var(--cyber-cyan-glow);
}

/* Full FastTracker II Matrix Canvas Container */
.pattern-matrix-wrap {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  background: #030712;
  border: 1px solid rgba(0, 243, 255, 0.25);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: inset 0 0 25px rgba(0, 0, 0, 0.95), 0 0 10px rgba(0, 243, 255, 0.08);
  display: flex;
}

#pattern-matrix-canvas {
  width: 100%;
  height: 100%;
  display: block;
  transform: translateZ(0);
  will-change: transform;
}

/* ==========================================================================
   PER-CHANNEL CYBER ANIMATION RACK
   ========================================================================== */
.channel-rack-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
  margin-top: auto;
}

.rack-title-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
}

/* Individual Cyber Channel Card */
.cyber-channel-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-md);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.cyber-channel-card:hover {
  border-color: var(--cyber-cyan);
  background: var(--bg-panel-hover);
  box-shadow: 0 0 15px var(--cyber-cyan-glow);
}

.cyber-channel-card.active-pulse {
  border-color: var(--cyber-cyan);
  box-shadow: 0 0 18px var(--cyber-cyan-glow);
}

.cyber-channel-card.muted {
  opacity: 0.35;
  filter: grayscale(0.9);
  border-color: rgba(255, 0, 85, 0.3);
}

.cyber-channel-card.soloed {
  border-color: var(--cyber-yellow);
  box-shadow: 0 0 16px rgba(255, 230, 0, 0.4);
}

.channel-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.ch-label {
  font-weight: bold;
  color: var(--cyber-cyan);
  text-shadow: 0 0 6px var(--cyber-cyan);
}

.ch-note-tag {
  background: rgba(0, 243, 255, 0.15);
  color: #fff;
  padding: 1px 4px;
  border-radius: 2px;
  font-weight: bold;
}

/* Channel Oscilloscope Screen */
.ch-scope-wrap {
  width: 100%;
  height: 48px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(0, 243, 255, 0.2);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.ch-scope-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Cyber Matrix stream */
.ch-matrix-code {
  position: absolute;
  top: 2px;
  right: 4px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: rgba(0, 255, 102, 0.5);
  pointer-events: none;
}

/* LED Multi-Segment VU Meter */
.ch-vu-meter-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 14px;
}

.vu-bar {
  flex: 1;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(0, 243, 255, 0.2);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.vu-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyber-green) 0%, var(--cyber-yellow) 70%, var(--cyber-magenta) 95%);
  transition: width 0.04s ease-out;
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.4);
}

.vu-peak {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 5px #fff;
  left: 0%;
}

/* Channel Controls */
.ch-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  margin-top: 2px;
}

.ch-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: bold;
  padding: 2px 5px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
}

.ch-btn:hover {
  background: rgba(0, 243, 255, 0.2);
  color: #fff;
}

.ch-btn.active-mute {
  background: var(--cyber-magenta);
  color: #fff;
  border-color: var(--cyber-magenta);
  box-shadow: 0 0 6px var(--cyber-magenta);
}

.ch-btn.active-solo {
  background: var(--cyber-yellow);
  color: #000;
  border-color: var(--cyber-yellow);
  box-shadow: 0 0 6px var(--cyber-yellow);
}

/* ==========================================================================
   PLAYLIST SIDEBAR
   ========================================================================== */
#playlist-sidebar {
  grid-area: playlist;
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-cyber);
  backdrop-filter: blur(14px);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.4);
  overflow: hidden;
}

.playlist-header {
  padding: 14px max(16px, calc(env(safe-area-inset-right, 0px) + 12px)) 10px 16px;
  border-bottom: 1px solid rgba(0, 243, 255, 0.15);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.playlist-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.playlist-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #fff;
}

.playlist-count-badge {
  background: rgba(0, 243, 255, 0.15);
  border: 1px solid var(--cyber-cyan);
  color: var(--cyber-cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: 10px;
}

.search-input-wrap {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-cyber);
  font-size: 0.85rem;
  padding: 6px 10px 6px 30px;
  outline: none;
  transition: all 0.2s;
}

.search-input:focus {
  border-color: var(--cyber-cyan);
  box-shadow: 0 0 10px var(--cyber-cyan-glow);
  background: rgba(0, 0, 0, 0.6);
}

.search-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  pointer-events: none;
}

/* Category Filters */
.filter-pills-row {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.filter-pills-row::-webkit-scrollbar {
  height: 3px;
}
.filter-pills-row::-webkit-scrollbar-thumb {
  background: var(--cyber-cyan);
}

.filter-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-dim);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.filter-pill:hover {
  background: rgba(0, 243, 255, 0.15);
  color: #fff;
}

.filter-pill.active {
  background: var(--cyber-cyan);
  color: #000;
  border-color: var(--cyber-cyan);
  font-weight: bold;
}

/* Track List Container */
.track-list-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px max(10px, calc(env(safe-area-inset-right, 0px) + 8px)) 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.track-list-scroll::-webkit-scrollbar {
  width: 5px;
}
.track-list-scroll::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.2);
}
.track-list-scroll::-webkit-scrollbar-thumb {
  background: rgba(0, 243, 255, 0.3);
  border-radius: 3px;
}
.track-list-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--cyber-cyan);
}

/* Track Item Row */
.track-item {
  display: grid;
  grid-template-columns: 26px 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.track-item:hover {
  background: rgba(0, 243, 255, 0.08);
  border-color: rgba(0, 243, 255, 0.25);
  transform: translateX(2px);
}

.track-item.playing {
  background: rgba(0, 243, 255, 0.16);
  border-color: var(--cyber-cyan);
  box-shadow: inset 0 0 10px rgba(0, 243, 255, 0.2);
}

.track-item.playing .track-item-title {
  color: var(--cyber-cyan);
  font-weight: bold;
  text-shadow: 0 0 6px var(--cyber-cyan);
}

.track-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

.track-item.playing .track-num {
  color: var(--cyber-cyan);
}

.track-item-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.track-item-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-item-artist {
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-format-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: bold;
  padding: 1px 5px;
  border-radius: 2px;
  border: 1px solid currentColor;
}

.track-rating-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cyber-yellow);
  background: rgba(255, 230, 0, 0.08);
  border: 1px solid rgba(255, 230, 0, 0.3);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.track-rating-badge:hover {
  background: rgba(255, 230, 0, 0.22);
  border-color: var(--cyber-yellow);
  box-shadow: 0 0 10px rgba(255, 230, 0, 0.4);
  transform: scale(1.05);
  color: #fff;
}

.track-rating-badge.active-fav {
  background: linear-gradient(135deg, rgba(255, 230, 0, 0.35), rgba(255, 119, 0, 0.3));
  border-color: var(--cyber-yellow);
  color: #fff;
  box-shadow: 0 0 12px rgba(255, 230, 0, 0.5);
  text-shadow: 0 0 6px var(--cyber-yellow);
}

.live-fav-badge {
  font-size: 0.8rem;
  padding: 3px 10px;
}

.track-actions-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}

.track-action-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-dim);
  cursor: pointer;
  min-width: 28px;
  height: 26px;
  padding: 2px 6px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.18s ease;
  font-size: 0.95rem;
  text-decoration: none;
  user-select: none;
}

.track-action-btn:hover {
  background: rgba(0, 243, 255, 0.2);
  border-color: var(--cyber-cyan);
  color: #fff;
  box-shadow: 0 0 8px var(--cyber-cyan-glow);
}

.track-action-btn.btn-fav {
  color: var(--text-muted);
}

.track-action-btn.btn-fav:hover {
  color: var(--cyber-yellow);
  border-color: var(--cyber-yellow);
  background: rgba(255, 230, 0, 0.15);
  box-shadow: 0 0 8px rgba(255, 230, 0, 0.4);
}

.track-action-btn.btn-fav.active-fav {
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 230, 0, 0.4), rgba(255, 0, 85, 0.3));
  border-color: var(--cyber-yellow);
  box-shadow: 0 0 10px rgba(255, 230, 0, 0.6);
}

.track-action-btn.btn-share:hover {
  color: var(--cyber-cyan);
  border-color: var(--cyber-cyan);
  background: rgba(0, 240, 255, 0.2);
  box-shadow: 0 0 8px var(--cyber-cyan-glow);
}

.live-share-badge:hover {
  background: rgba(0, 240, 255, 0.25) !important;
  color: #fff !important;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5) !important;
}

/* ==========================================================================
   FOOTER PLAYER CONTROLS
   ========================================================================== */
#player-footer {
  grid-area: footer;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-cyber);
  backdrop-filter: blur(14px);
  padding: 10px max(20px, calc(env(safe-area-inset-right, 0px) + 14px)) max(10px, calc(env(safe-area-inset-bottom, 0px) + 6px)) max(20px, calc(env(safe-area-inset-left, 0px) + 14px));
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

/* Progress Scrubber Bar */
.progress-container {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.time-display {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  min-width: 48px;
}

.progress-bar-wrap {
  flex: 1;
  height: 8px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(0, 243, 255, 0.2);
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyber-cyan), var(--cyber-magenta));
  border-radius: 4px;
  box-shadow: 0 0 10px var(--cyber-cyan-glow);
  position: relative;
}

/* Main Controls Row */
.player-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.playback-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.control-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #6d8ba6;
  opacity: 0.55;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  font-size: 1rem;
}

/* On desktop with mouse pointer, subtle hover for non-active buttons */
@media (hover: hover) and (pointer: fine) {
  .control-btn:not(.active-mode):not(.play-btn):hover {
    background: rgba(0, 243, 255, 0.12);
    border-color: rgba(0, 243, 255, 0.4);
    color: #fff;
    opacity: 0.85;
    box-shadow: 0 0 8px rgba(0, 243, 255, 0.25);
    transform: scale(1.05);
  }
}

/* Clear focus outline for touch */
.control-btn:focus,
.control-btn:focus-visible {
  outline: none;
}

/* Play/Pause Button */
.control-btn.play-btn {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(0, 243, 255, 0.35), rgba(255, 0, 85, 0.35));
  border: 1.5px solid var(--cyber-cyan);
  color: #fff;
  opacity: 1;
  box-shadow: 0 0 15px var(--cyber-cyan-glow);
}

.control-btn.play-btn:hover {
  box-shadow: 0 0 22px var(--cyber-cyan);
  transform: scale(1.08);
}

/* Active State (Shuffle ON or Loop All ON): High-contrast Neon Cyan */
.control-btn.active-mode {
  opacity: 1 !important;
  color: #00f3ff !important;
  background: linear-gradient(135deg, rgba(0, 243, 255, 0.32), rgba(0, 120, 255, 0.22)) !important;
  border: 1.5px solid var(--cyber-cyan) !important;
  box-shadow: 0 0 14px var(--cyber-cyan), inset 0 0 8px rgba(0, 243, 255, 0.4) !important;
  text-shadow: 0 0 8px var(--cyber-cyan);
}

.control-btn.active-mode::after {
  content: '';
  position: absolute;
  bottom: 2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyber-cyan);
  box-shadow: 0 0 6px var(--cyber-cyan);
}

/* Mode One (Repeat Single Track): Distinct Neon Magenta */
.control-btn.active-mode.mode-one {
  color: #ff007f !important;
  background: linear-gradient(135deg, rgba(255, 0, 127, 0.32), rgba(180, 0, 255, 0.22)) !important;
  border: 1.5px solid #ff007f !important;
  box-shadow: 0 0 14px rgba(255, 0, 127, 0.8), inset 0 0 8px rgba(255, 0, 127, 0.4) !important;
  text-shadow: 0 0 8px #ff007f;
}

.control-btn.active-mode.mode-one::after {
  background: #ff007f;
  box-shadow: 0 0 6px #ff007f;
}

/* Volume and Speed Controls */
.extra-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.volume-control-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.volume-slider {
  -webkit-appearance: none;
  width: 90px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  outline: none;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyber-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px var(--cyber-cyan);
}

/* MODAL DIALOG */
.cyber-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.cyber-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.cyber-modal-box {
  width: 90%;
  max-width: 600px;
  background: var(--bg-secondary);
  border: 1px solid var(--cyber-cyan);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 0 40px var(--cyber-cyan-glow);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.25s ease;
}

.cyber-modal-backdrop.open .cyber-modal-box {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.2rem;
  cursor: pointer;
}
.modal-close-btn:hover {
  color: var(--cyber-magenta);
}

/* VISUALIZER MODE SWITCHER */
.vis-mode-switch-row {
  display: inline-flex;
  background: rgba(10, 14, 26, 0.85);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}

.vis-mode-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-cyber);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.vis-mode-btn:hover {
  color: #fff;
  background: rgba(0, 243, 255, 0.15);
}

.vis-mode-btn.active {
  background: var(--cyber-cyan);
  color: #060912;
  box-shadow: 0 0 10px var(--cyber-cyan-glow);
  font-weight: 800;
}

/* ENGINE MODE SWITCHER (WASM vs STREAM) */
.engine-switch-wrap {
  display: flex;
  align-items: center;
}

.engine-mode-btn {
  background: rgba(10, 14, 26, 0.9);
  border: 1px solid var(--border-cyber);
  color: var(--cyber-cyan);
  font-family: var(--font-cyber);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  letter-spacing: 0.5px;
}

.engine-mode-btn:hover {
  border-color: var(--cyber-cyan);
  box-shadow: 0 0 12px var(--cyber-cyan-glow);
  color: #fff;
}

.engine-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyber-green);
  box-shadow: 0 0 8px var(--cyber-green);
  animation: pulseDot 1.5s infinite;
}

.engine-mode-btn.stream-mode {
  border-color: var(--border-magenta);
  color: var(--cyber-magenta);
}

.engine-mode-btn.stream-mode .engine-dot {
  background-color: var(--cyber-magenta);
  box-shadow: 0 0 8px var(--cyber-magenta);
}

/* SPECIAL FILTER PILLS */
.filter-pill[data-filter="xixit"] {
  border-color: rgba(255, 0, 85, 0.4);
  color: #ff5588;
}
.filter-pill[data-filter="xixit"]:hover,
.filter-pill[data-filter="xixit"].active {
  background: var(--cyber-magenta);
  color: #fff;
  box-shadow: 0 0 12px var(--cyber-magenta-glow);
}

.filter-pill[data-filter="minebombers"] {
  border-color: rgba(0, 255, 102, 0.4);
  color: #55ff88;
}
.filter-pill[data-filter="minebombers"]:hover,
.filter-pill[data-filter="minebombers"].active {
  background: var(--cyber-green);
  color: #060912;
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.5);
}

/* FULLSCREEN STAGE MODE */
#app.stage-fullscreen {
  grid-template-columns: 1fr !important;
  grid-template-rows: 1fr auto !important;
  grid-template-areas:
    "main"
    "footer" !important;
}

#app.stage-fullscreen #header-hud,
#app.stage-fullscreen #main-header,
#app.stage-fullscreen #playlist-sidebar,
#app.stage-fullscreen .mobile-nav-bar,
#app.stage-fullscreen #btn-donate-modal,
#app.stage-fullscreen .btn-donate,
#app.stage-fullscreen #btn-download-track,
#app.stage-fullscreen #live-share-btn,
#app.stage-fullscreen #btn-share-track,
#app.stage-fullscreen #btn-random-scene,
#app.stage-fullscreen .scene-select-hud {
  display: none !important;
}

#app.stage-fullscreen #main-stage {
  padding: 16px 24px;
  justify-content: flex-end;
  background: transparent;
  gap: 12px;
}

#app.stage-fullscreen .stage-hud-bar {
  background: rgba(6, 8, 16, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(0, 243, 255, 0.4);
  box-shadow: 0 0 35px rgba(0, 243, 255, 0.25);
  z-index: 20;
  padding: 10px 18px;
  gap: 8px;
}

#app.stage-fullscreen .format-badge-large {
  font-size: 0.75rem !important;
  padding: 2px 6px !important;
  letter-spacing: 1px !important;
  line-height: 1.15 !important;
  box-shadow: 0 0 8px var(--cyber-cyan-glow) !important;
}

#app.stage-fullscreen .track-title-live {
  font-size: 1.35rem;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.35);
}

#app.stage-fullscreen .track-artist-live {
  font-size: 1.05rem;
}

#app.stage-fullscreen .channel-rack-section {
  background: rgba(6, 8, 16, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ==========================================================================
   CHANNEL MUTE / SOLO CONTROLS (Always accessible)
   ========================================================================== */
.ch-controls-row {
  display: flex !important;
}

/* ==========================================================================
   TRACKER REAL-TIME BPM CONTROLLER
   ========================================================================== */
.tracker-bpm-control {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-family: var(--font-mono);
}

.bpm-label {
  color: var(--cyber-cyan);
  font-size: 0.7rem;
  font-weight: 700;
  margin-right: 2px;
}

.bpm-val {
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  min-width: 30px;
  text-align: center;
  text-shadow: 0 0 6px var(--cyber-cyan);
}

.bpm-btn {
  background: rgba(0, 243, 255, 0.1);
  border: 1px solid rgba(0, 243, 255, 0.25);
  color: var(--text-dim);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 1px 5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.bpm-btn:hover {
  background: var(--cyber-cyan);
  color: #000;
  border-color: var(--cyber-cyan);
  font-weight: bold;
}

.bpm-btn.btn-bpm-orig {
  color: var(--cyber-yellow);
  border-color: rgba(255, 230, 0, 0.3);
  font-size: 0.62rem;
  margin-left: 2px;
}

.bpm-btn.btn-bpm-orig:hover {
  background: var(--cyber-yellow);
  color: #000;
  border-color: var(--cyber-yellow);
}

/* Speed selector wrap */
.speed-select-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.cyber-select {
  background: #0c101d;
  color: var(--cyber-cyan);
  border: 1px solid var(--border-cyber);
  border-radius: 3px;
  padding: 2px 4px;
  font-family: var(--font-mono);
  outline: none;
}

/* ==========================================================================
   PLAYLIST HEADER & USER UPLOAD BUTTON
   ========================================================================== */
.playlist-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-cyan {
  background: rgba(0, 243, 255, 0.18) !important;
  border-color: var(--cyber-cyan) !important;
  color: var(--cyber-cyan) !important;
}

.btn-cyan:hover {
  background: var(--cyber-cyan) !important;
  color: #000 !important;
  box-shadow: 0 0 12px var(--cyber-cyan-glow) !important;
}

/* Filter pills for new scene groups */
.filter-pill[data-filter="fairlight"] { border-color: rgba(255, 200, 0, 0.4); color: #ffd700; }
.filter-pill[data-filter="paradox"] { border-color: rgba(180, 0, 255, 0.4); color: #c084fc; }
.filter-pill[data-filter="deviance"] { border-color: rgba(0, 243, 255, 0.4); color: #00f3ff; }
.filter-pill[data-filter="core"] { border-color: rgba(0, 255, 128, 0.4); color: #00ff88; }
.filter-pill[data-filter="blizzard"] { border-color: rgba(0, 180, 255, 0.4); color: #38bdf8; }
.filter-pill[data-filter="user"] { border-color: rgba(255, 0, 128, 0.4); color: #ff007f; }

/* ==========================================================================
   DRAG & DROP VISUAL OVERLAY & TOASTS
   ========================================================================== */
.drag-drop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 18, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.drag-drop-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.drag-drop-box {
  background: rgba(10, 15, 30, 0.95);
  border: 2px dashed var(--cyber-cyan);
  border-radius: var(--radius-lg);
  padding: 40px 60px;
  text-align: center;
  box-shadow: 0 0 50px var(--cyber-cyan-glow), inset 0 0 20px rgba(0, 243, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.drag-drop-icon {
  font-size: 2.8rem;
}

.drag-drop-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--cyber-cyan);
  letter-spacing: 2px;
  text-shadow: 0 0 10px var(--cyber-cyan);
}

.drag-drop-desc {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #fff;
}

.drag-drop-hash {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyber-yellow);
  background: rgba(255, 230, 0, 0.1);
  border: 1px solid rgba(255, 230, 0, 0.25);
  padding: 2px 8px;
  border-radius: 4px;
}

.cyber-toast-container {
  position: fixed;
  bottom: calc(85px + env(safe-area-inset-bottom, 0px));
  right: max(24px, calc(env(safe-area-inset-right, 0px) + 16px));
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.cyber-toast {
  background: rgba(10, 14, 26, 0.95);
  border: 1px solid var(--border-cyber);
  border-left: 4px solid var(--cyber-cyan);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7);
  pointer-events: auto;
  animation: toastSlideIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cyber-toast.warn {
  border-left-color: var(--cyber-yellow);
}

.cyber-toast.error {
  border-left-color: var(--cyber-magenta);
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   REALTIME ONLINE BADGE & LIVE LIKE NOTIFICATIONS
   ========================================================================== */
.online-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 255, 204, 0.08);
  border: 1px solid rgba(0, 255, 204, 0.35);
  color: #00ffcc;
  padding: 4px 10px;
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 0 12px rgba(0, 255, 204, 0.15);
  user-select: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
  height: 28px;
  box-sizing: border-box;
}

.online-badge:hover {
  background: rgba(0, 255, 204, 0.16);
  border-color: #00ffcc;
  box-shadow: 0 0 16px rgba(0, 255, 204, 0.35);
}

.online-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #00ffcc;
  box-shadow: 0 0 8px #00ffcc, 0 0 14px #00ffcc;
  animation: pulseOnline 2s infinite ease-in-out;
  flex-shrink: 0;
}

@keyframes pulseOnline {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 8px #00ffcc, 0 0 14px #00ffcc;
  }
  50% {
    opacity: 0.4;
    transform: scale(0.85);
    box-shadow: 0 0 3px #00ffcc;
  }
}

.online-count {
  color: #fff;
  font-weight: 800;
  min-width: 1ch;
  text-align: center;
  transition: color 0.3s ease;
}

.online-label {
  color: rgba(0, 255, 204, 0.85);
  font-size: 0.65rem;
  font-weight: 600;
}

/* Like Notification Cyber Toast */
.cyber-toast.toast-like-event {
  background: rgba(12, 16, 32, 0.97);
  border: 1px solid rgba(255, 0, 85, 0.5);
  border-left: 4px solid #ff0055;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.85), 0 0 20px rgba(255, 0, 85, 0.25);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  max-width: 380px;
  padding: 10px 14px;
}

.cyber-toast.toast-like-event:hover {
  transform: translateX(-4px) scale(1.02);
  border-color: #ff0055;
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.95), 0 0 28px rgba(255, 0, 85, 0.45);
}

.toast-like-body {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.toast-like-heart {
  font-size: 1.25rem;
  color: #ff0055;
  filter: drop-shadow(0 0 8px #ff0055);
  animation: heartPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  flex-shrink: 0;
}

@keyframes heartPop {
  0% { transform: scale(0.3); opacity: 0; }
  60% { transform: scale(1.3); }
  100% { transform: scale(1); opacity: 1; }
}

.toast-like-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.toast-like-caption {
  font-size: 0.68rem;
  color: var(--text-muted, #8899aa);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.toast-like-track {
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: underline;
  text-decoration-color: rgba(0, 255, 204, 0.5);
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}

.toast-like-track:hover {
  color: var(--cyber-cyan, #00ffcc);
  text-decoration-color: var(--cyber-cyan, #00ffcc);
}

.toast-like-artist {
  font-size: 0.72rem;
  color: var(--cyber-cyan, #00ffcc);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   CYBER MODALS (INFO & DONATE)
   ========================================================================== */
.cyber-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 18, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: max(16px, calc(env(safe-area-inset-top, 0px) + 12px)) max(16px, calc(env(safe-area-inset-right, 0px) + 12px)) max(16px, calc(env(safe-area-inset-bottom, 0px) + 12px)) max(16px, calc(env(safe-area-inset-left, 0px) + 12px));
  box-sizing: border-box;
}

.cyber-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.cyber-modal-box {
  background: rgba(10, 14, 26, 0.96);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 50px rgba(0, 243, 255, 0.25), 0 25px 60px rgba(0, 0, 0, 0.85);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
  box-sizing: border-box;
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-cyber);
  color: var(--text-dim);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--cyber-magenta);
  border-color: var(--cyber-magenta);
  color: #fff;
  box-shadow: 0 0 12px var(--cyber-magenta-glow);
  transform: scale(1.1);
}

/* Donate Button in Header */
.cyber-btn.btn-donate {
  background: linear-gradient(135deg, rgba(255, 0, 128, 0.2), rgba(255, 170, 0, 0.2));
  border: 1px solid rgba(255, 100, 180, 0.6);
  color: #ffb8df;
  font-weight: 700;
  box-shadow: 0 0 10px rgba(255, 0, 128, 0.3);
  letter-spacing: 0.5px;
}

.cyber-btn.btn-donate:hover {
  background: linear-gradient(135deg, rgba(255, 0, 128, 0.4), rgba(255, 170, 0, 0.4));
  border-color: #ff007f;
  color: #ffffff;
  box-shadow: 0 0 18px rgba(255, 0, 128, 0.6);
  transform: translateY(-1px);
}

/* Donate Modal Layout */
.donate-modal-box {
  max-width: 880px;
  padding: 28px 32px;
}

.donate-header-glow {
  margin-bottom: 20px;
  text-align: center;
}

.donate-tag-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 0, 128, 0.15);
  border: 1px solid rgba(255, 0, 128, 0.4);
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: #ff70b0;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.donate-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: 2px;
  margin: 0 0 6px 0;
  text-shadow: 0 0 15px rgba(0, 243, 255, 0.5);
}

.donate-subtitle {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0;
}

.donate-hero-banner {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--cyber-magenta);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.donate-hero-icon {
  font-size: 2.2rem;
  line-height: 1;
}

.donate-hero-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: #fff;
  margin: 0 0 6px 0;
}

.donate-hero-content p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin: 0;
}

/* 3 Cards Grid */
.donate-methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.donate-method-card {
  background: rgba(14, 20, 38, 0.85);
  border: 1px solid var(--border-cyber);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  position: relative;
}

.donate-method-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

.donate-method-card.yoomoney-card {
  border-color: rgba(138, 43, 226, 0.5);
}
.donate-method-card.yoomoney-card:hover {
  border-color: #a855f7;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.25);
}

.donate-method-card.boosty-card {
  border-color: rgba(249, 115, 22, 0.5);
}
.donate-method-card.boosty-card:hover {
  border-color: #f97316;
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.25);
}

.donate-method-card.tbank-card {
  border-color: rgba(234, 179, 8, 0.5);
}
.donate-method-card.tbank-card:hover {
  border-color: #eab308;
  box-shadow: 0 0 20px rgba(234, 179, 8, 0.25);
}

.donate-method-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.yoomoney-badge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
}

.boosty-badge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  background: linear-gradient(135deg, #ea580c, #f59e0b);
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
}

.tbank-badge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  background: linear-gradient(135deg, #eab308, #ca8a04);
  color: #1a1a1a;
  padding: 3px 8px;
  border-radius: 4px;
}

.donate-method-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--cyber-cyan);
  background: rgba(0, 243, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 243, 255, 0.2);
}

.donate-method-tag.boosty-tag {
  color: #fb923c;
  background: rgba(249, 115, 22, 0.1);
  border-color: rgba(249, 115, 22, 0.2);
}

.donate-method-tag.tbank-tag {
  color: #facc15;
  background: rgba(234, 179, 8, 0.1);
  border-color: rgba(234, 179, 8, 0.2);
}

.donate-method-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 6px 0;
}

.donate-method-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.45;
  margin: 0 0 12px 0;
  flex: 1;
}

/* Wallet Box */
.donate-wallet-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin-bottom: 12px;
}

.donate-wallet-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.donate-wallet-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.donate-wallet-field code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyber-cyan);
  background: transparent;
  word-break: break-all;
}

/* Quick Amount Chips */
.donate-quick-amounts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.quick-amount-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  width: 100%;
}

.donate-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: #fff;
  text-decoration: none;
  transition: all 0.2s ease;
}

.donate-chip:hover {
  background: rgba(0, 243, 255, 0.2);
  border-color: var(--cyber-cyan);
  color: var(--cyber-cyan);
  transform: translateY(-1px);
}

/* Action Button */
.btn-donate-action {
  width: 100%;
  justify-content: center;
  padding: 9px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  box-sizing: border-box;
}

.btn-donate-action.yoomoney-btn {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(236, 72, 153, 0.3));
  border-color: #a855f7;
  color: #fff;
}
.btn-donate-action.yoomoney-btn:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.5), rgba(236, 72, 153, 0.5));
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.5);
}

.btn-donate-action.boosty-btn {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.3), rgba(245, 158, 11, 0.3));
  border-color: #f97316;
  color: #fff;
}
.btn-donate-action.boosty-btn:hover {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.5), rgba(245, 158, 11, 0.5));
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.5);
}

.btn-donate-action.tbank-btn {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.3), rgba(202, 138, 4, 0.3));
  border-color: #eab308;
  color: #fff;
}
.btn-donate-action.tbank-btn:hover {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.5), rgba(202, 138, 4, 0.5));
  box-shadow: 0 0 16px rgba(234, 179, 8, 0.5);
}

.donate-ecosystem-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 243, 255, 0.04);
  border: 1px solid rgba(0, 243, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.4;
}

/* =========================================================================
   ECO / LITE MODE (CPU / GPU POWER SAVER)
   ========================================================================= */
#btn-eco-toggle.active {
  background: rgba(0, 255, 136, 0.25) !important;
  border-color: #00ff88 !important;
  color: #00ff88 !important;
  box-shadow: none !important;
  text-shadow: none !important;
}

body.eco-mode #scene-container {
  display: none !important;
}

body.eco-mode {
  background: #060810 !important;
}

body.eco-mode #app,
body.eco-mode #header-hud,
body.eco-mode #playlist-sidebar,
body.eco-mode #player-footer,
body.eco-mode .cyber-channel-card,
body.eco-mode .channel-card,
body.eco-mode .stage-hud-bar,
body.eco-mode .master-visualizer-hud,
body.eco-mode .modal-content,
body.eco-mode .compact-pattern-hud-overlay,
body.eco-mode .tracker-pattern-hud,
body.eco-mode .playlist-header,
body.eco-mode .panel-header-sub {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: none !important;
}

body.eco-mode .scanlines-overlay,
body.eco-mode .vignette-overlay {
  display: none !important;
}

body.eco-mode .ch-scope-canvas {
  display: none !important;
}

body.eco-mode .ch-scope-wrap {
  height: 24px !important;
  min-height: 24px !important;
  background: rgba(10, 14, 26, 0.6) !important;
}

body.eco-mode .brand-section .logo-glitch,
body.eco-mode .track-title-live,
body.eco-mode .cyber-btn,
body.eco-mode .stat-val,
body.eco-mode .track-title {
  text-shadow: none !important;
  box-shadow: none !important;
  animation: none !important;
}

body.eco-mode * {
  animation-duration: 0s !important;
  transition-duration: 0.05s !important;
}

/* =========================================================================
   MOBILE NAVIGATION TABS (Hidden on Desktop by default)
   ========================================================================= */
.mobile-nav-bar {
  display: none;
}
/* =========================================================================
   INTERMEDIATE DESKTOP & TABLET (900px - 1250px)
   Prevents stage HUD controls from overlapping track info
   ========================================================================= */
@media (max-width: 1250px) and (min-width: 900px) {
  .stage-hud-bottom-row {
    gap: 8px 12px;
  }
}

/* =========================================================================
   MOBILE & SMALL SCREEN OPTIMIZATION (max-width: 899px)
   Does NOT alter or affect the large desktop layout (>= 900px)
   ========================================================================= */
@media (max-width: 899px) {
  html, body {
    height: 100%;
    overflow: hidden;
  }

  /* 1. App Single-Column Layout */
  #app {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-template-areas: none;
    overflow: hidden;
  }

  /* 2. Mobile Navigation Tabs Bar */
  .mobile-nav-bar {
    display: flex !important;
    align-items: center;
    justify-content: space-around;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-cyber);
    padding: 6px max(10px, calc(env(safe-area-inset-right, 0px) + 8px)) 6px max(10px, calc(env(safe-area-inset-left, 0px) + 8px));
    gap: 6px;
    flex-shrink: 0;
    z-index: 15;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    touch-action: manipulation;
  }

  .mobile-nav-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(0, 243, 255, 0.06);
    border: 1px solid rgba(0, 243, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-dim);
    padding: 8px 6px;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 40px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-nav-btn:hover {
    color: #fff;
    background: rgba(0, 243, 255, 0.12);
  }

  .mobile-nav-btn.active {
    background: rgba(0, 243, 255, 0.22);
    border-color: var(--cyber-cyan);
    color: var(--cyber-cyan);
    box-shadow: 0 0 10px var(--cyber-cyan-glow);
  }

  .mob-tab-icon {
    font-size: 0.95rem;
  }

  /* 3. Header HUD Simplification */
  #header-hud {
    padding: max(8px, calc(env(safe-area-inset-top, 0px) + 4px)) max(12px, calc(env(safe-area-inset-right, 0px) + 10px)) 6px max(12px, calc(env(safe-area-inset-left, 0px) + 10px));
    gap: 8px;
    flex-shrink: 0;
  }

  .hud-sys-status {
    display: none !important;
  }

  .logo-glitch {
    font-size: 1.05rem;
    letter-spacing: 1px;
    gap: 5px;
  }

  .logo-badge {
    font-size: 0.62rem;
    padding: 1px 5px;
  }

  .header-actions {
    gap: 4px;
  }

  .header-actions #btn-fullscreen,
  .header-actions #btn-crt-toggle {
    display: none !important;
  }

  .cyber-btn.btn-small {
    padding: 4px 7px;
    font-size: 0.72rem;
    letter-spacing: 0.5px;
  }

  /* 4. Mobile Views Control (Player / Playlist / Channels) */
  /* Default: Player View */
  #app #main-stage {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 8px max(10px, calc(env(safe-area-inset-right, 0px) + 8px)) 8px max(10px, calc(env(safe-area-inset-left, 0px) + 8px));
    gap: 8px;
  }

  #app #playlist-sidebar {
    display: none !important;
  }

  /* Playlist View Active */
  #app.mobile-view-playlist #main-stage {
    display: none !important;
  }

  #app.mobile-view-playlist #playlist-sidebar {
    display: flex !important;
    flex-direction: column !important;
    flex: 1 1 0% !important;
    min-height: 0 !important;
    max-height: none !important;
    height: auto !important;
    width: 100% !important;
    border-left: none;
    box-shadow: none;
    overflow: hidden;
  }

  /* Channels View Active */
  #app.mobile-view-channels #main-stage {
    display: flex !important;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 8px max(10px, calc(env(safe-area-inset-right, 0px) + 8px)) 8px max(10px, calc(env(safe-area-inset-left, 0px) + 8px));
  }

  #app.mobile-view-channels #playlist-sidebar {
    display: none !important;
  }

  #app.mobile-view-channels .stage-hud-bar,
  #app.mobile-view-channels .master-visualizer-hud {
    display: none !important;
  }

  #app.mobile-view-channels .channel-rack-section {
    display: flex !important;
    flex: 1;
    margin-top: 0;
  }

  #app.mobile-view-channels .channel-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)) !important;
    gap: 8px !important;
  }

  /* In Player View: Show channels in a touch-friendly scrollable horizontal rack */
  #app.mobile-view-player .channel-rack-section {
    display: flex !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
  }

  #app.mobile-view-player .channel-grid {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 6px !important;
    min-width: min-content;
  }

  #app.mobile-view-player .cyber-channel-card {
    min-width: 120px !important;
    flex: 0 0 auto !important;
  }

  /* 5. Main Stage Component Refinements on Mobile */
  .stage-hud-bar {
    padding: 6px 10px;
    gap: 6px;
  }

  .stage-hud-top-row {
    gap: 8px;
  }

  .format-badge-large {
    font-size: 0.9rem;
    padding: 3px 8px;
    letter-spacing: 1px;
  }

  .track-title-live {
    font-size: 1.05rem;
  }

  .track-artist-live {
    font-size: 0.82rem;
  }

  .stage-hud-bottom-row {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .stage-meta-actions {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    gap: 6px;
    padding-bottom: 2px;
  }

  .live-fav-badge {
    font-size: 0.75rem;
    padding: 2px 7px;
  }

  .stage-scene-controls {
    overflow-x: auto;
    width: 100%;
    padding-bottom: 3px;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 6px;
  }

  .scene-btn {
    padding: 3px 6px;
    font-size: 0.68rem;
  }

  /* Master Scope Canvas Sizing on Mobile */
  .master-visualizer-hud {
    flex: 0 0 auto !important; /* Do not compress below minimum height on mobile */
    min-height: 160px !important;
    height: auto !important;
    display: flex !important;
    flex-direction: column;
    overflow: hidden !important;
  }

  .master-visualizer-hud.compact-hud-active,
  .master-visualizer-hud.full-hud-active {
    display: flex !important;
    flex-direction: column !important;
  }

  .master-visualizer-hud.full-hud-active #tracker-pattern-container {
    display: none !important;
  }

  .master-visualizer-hud.full-hud-active .compact-pattern-hud-overlay {
    display: flex !important;
  }

  .master-scope-panel {
    min-height: 160px !important;
    padding: 8px 10px !important;
    position: relative !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
    flex: 1 !important;
  }

  .panel-header-sub {
    font-size: 0.7rem !important;
    margin-bottom: 4px !important;
    padding-bottom: 2px !important;
    flex-shrink: 0 !important;
  }

  .scope-canvas-wrap {
    min-height: 115px !important;
    height: 100% !important;
    flex: 1 !important;
    position: relative !important;
    overflow: hidden !important;
    border-radius: var(--radius-sm) !important;
  }

  .compact-pattern-hud-overlay {
    top: 4px !important;
    right: 4px !important;
    min-width: 120px !important;
    max-width: 155px !important;
    max-height: calc(100% - 8px) !important;
    overflow: hidden !important;
    padding: 3px 6px !important;
    font-size: 0.60rem !important;
    gap: 2px !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
  }

  .overlay-expand-btn {
    display: none !important;
  }

  /* 6. Playlist Sidebar on Mobile */
  .playlist-header {
    padding: 8px max(10px, calc(env(safe-area-inset-right, 0px) + 10px)) 6px max(10px, calc(env(safe-area-inset-left, 0px) + 10px));
    gap: 8px;
  }

  .playlist-title {
    font-size: 0.9rem;
  }

  .search-input {
    font-size: 16px !important; /* Prevents auto-zoom in iOS Safari */
    padding: 8px 10px 8px 30px;
  }

  .filter-pills-row {
    padding-bottom: 4px;
    gap: 4px;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0;
  }

  .filter-pill {
    font-size: 0.72rem;
    padding: 4px 8px;
    min-height: 28px;
  }

  .track-list-scroll {
    flex: 1 1 0% !important;
    min-height: 0 !important;
    max-height: none !important;
    height: auto !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch;
    padding: 4px max(8px, calc(env(safe-area-inset-right, 0px) + 8px)) 4px max(8px, calc(env(safe-area-inset-left, 0px) + 8px));
    gap: 4px;
  }

  .track-item {
    grid-template-columns: 24px 1fr auto auto;
    padding: 8px 10px;
    min-height: 48px; /* Comfortable mobile touch target */
    gap: 8px;
  }

  .track-item-title {
    font-size: 0.88rem;
  }

  .track-item-artist {
    font-size: 0.75rem;
  }

  .track-action-btn {
    min-width: 32px;
    height: 30px;
    font-size: 1rem;
  }

  /* 7. Player Footer Controls on Mobile */
  #player-footer {
    padding: 8px max(14px, calc(env(safe-area-inset-right, 0px) + 10px)) max(12px, calc(env(safe-area-inset-bottom, 0px) + 8px)) max(14px, calc(env(safe-area-inset-left, 0px) + 10px));
    gap: 6px;
    flex-shrink: 0;
    margin-top: auto;
  }

  .progress-container {
    gap: 8px;
  }

  .progress-bar-wrap {
    height: 10px;
  }

  .time-display {
    font-size: 0.72rem;
    min-width: 38px;
  }

  .player-controls-row {
    justify-content: space-between;
    width: 100%;
  }

  .playback-buttons {
    gap: 6px;
    justify-content: center;
    flex: 1;
  }

  .control-btn {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
    touch-action: manipulation;
  }

  .control-btn.play-btn {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
}

/* Sub-query for Small Phones (< 600px) */
@media (max-width: 599px) {
  .volume-control-wrap {
    display: none !important; /* Phones use physical volume rocker buttons */
  }

  .tracker-bpm-control {
    display: none !important; /* Hide micro BPM buttons to prevent control row crowding */
  }

  .stage-scene-controls #btn-download-track {
    display: none !important; /* Download is available in playlist track items */
  }

  .extra-controls {
    gap: 6px;
  }

  .engine-mode-btn {
    padding: 4px 7px;
    font-size: 0.68rem;
  }

  .engine-mode-btn span:last-child {
    display: inline-block;
  }
}

/* =========================================================================
   LOW HEIGHT SCREENS (Height <= 720px, Mobile & Desktop)
   Significantly reduces channel card height to preserve vertical space
   ========================================================================= */
@media (max-height: 720px) {
  #main-stage {
    padding-top: 6px;
    padding-bottom: 6px;
    gap: 6px;
  }

  .stage-hud-bar {
    padding: 6px 10px;
    gap: 6px;
  }

  .channel-rack-section {
    gap: 3px !important;
  }

  .rack-title-hud {
    font-size: 0.72rem !important;
    letter-spacing: 0.5px !important;
  }

  .channel-grid {
    gap: 5px !important;
  }

  .cyber-channel-card {
    padding: 3px 5px !important;
    gap: 2px !important;
    border-radius: var(--radius-sm) !important;
  }

  .channel-top-bar {
    font-size: 0.62rem !important;
    line-height: 1.1 !important;
  }

  .ch-label {
    font-size: 0.64rem !important;
  }

  .ch-note-tag {
    padding: 0px 3px !important;
    font-size: 0.58rem !important;
  }

  .ch-scope-wrap {
    height: 24px !important; /* Compact oscilloscope height */
  }

  .ch-matrix-code {
    font-size: 0.5rem !important;
    top: 1px !important;
    right: 2px !important;
  }

  .ch-vu-meter-wrap {
    height: 6px !important; /* Compact LED VU meter */
    gap: 2px !important;
  }

  .ch-controls-row {
    margin-top: 1px !important;
    gap: 3px !important;
  }

  .ch-btn {
    padding: 1px 4px !important;
    font-size: 0.58rem !important;
    line-height: 1.1 !important;
    height: 16px !important;
  }
}

/* =========================================================================
   ULTRA-LOW HEIGHT SCREENS (Height <= 620px, Mobile Landscape & Small Displays)
   Channels in single compact row or ultra-dense cards with maximum stage room
   ========================================================================= */
@media (max-height: 620px) {
  #main-stage {
    padding: 4px 10px;
    gap: 4px;
  }

  .stage-hud-bar {
    padding: 4px 8px;
    gap: 4px;
  }

  .format-badge-large {
    font-size: 0.85rem;
    padding: 2px 6px;
  }

  .track-title-live {
    font-size: 0.95rem;
  }

  .scene-btn {
    padding: 2px 5px;
    font-size: 0.62rem;
  }

  .cyber-btn.btn-small {
    padding: 2px 5px;
    font-size: 0.62rem;
  }

  /* Force channel rack into strictly compact layout */
  .channel-rack-section {
    gap: 0 !important;
    margin-top: auto !important;
    flex-shrink: 0 !important;
  }

  .rack-title-hud {
    display: none !important; /* Hide title row to make the rack ultra-compact */
  }

  .channel-grid {
    gap: 4px !important;
    padding-bottom: 2px;
  }

  .cyber-channel-card {
    padding: 2px 4px !important;
    gap: 1px !important;
    border-radius: 3px !important;
  }

  .channel-top-bar {
    font-size: 0.58rem !important;
  }

  .ch-label {
    font-size: 0.6rem !important;
  }

  .ch-note-tag {
    padding: 0 2px !important;
    font-size: 0.55rem !important;
  }

  .ch-scope-wrap {
    height: 18px !important;
  }

  .ch-matrix-code {
    display: none !important;
  }

  .ch-vu-meter-wrap {
    height: 4px !important;
    gap: 1px !important;
  }

  .ch-controls-row {
    margin-top: 0px !important;
    gap: 2px !important;
  }

  .ch-btn {
    padding: 0px 3px !important;
    font-size: 0.55rem !important;
    line-height: 1.1 !important;
    height: 14px !important;
  }
}