/* ==========================================================================
   BOUNCE — Interactive Bouncing Ball Music Studio
   Modern, Playful & Lightweight Music App Design System
   ========================================================================== */

:root {
  /* Core Dark Obsidian Palette */
  --bg-deep: #090b12;
  --bg-surface: #101422;
  --bg-surface-elevated: #161c2e;
  --bg-glass: rgba(18, 24, 40, 0.72);
  --bg-glass-strong: rgba(22, 30, 50, 0.88);
  
  /* Luminous Accent Tones */
  --accent-violet: #8b5cf6;
  --accent-violet-glow: rgba(139, 92, 246, 0.35);
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.35);
  --accent-coral: #f43f5e;
  --accent-coral-glow: rgba(244, 63, 94, 0.35);
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.35);
  --accent-emerald: #10b981;
  
  /* Crisp Text Hierarchy */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-dim: #475569;
  
  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-active: rgba(139, 92, 246, 0.45);
  --border-highlight: rgba(255, 255, 255, 0.15);
  
  /* Radii & Elevation */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-full: 9999px;
  
  /* Canvas Background */
  --chalkboard-bg: #0c0f1a;
  
  /* Shadows & Neon Drops */
  --shadow-card: 0 16px 36px -12px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--border-subtle);
  --shadow-glass: 0 20px 40px -15px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --shadow-active: 0 0 24px -4px var(--accent-violet-glow);
}

/* Base Reset & Typography Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: 'Outfit', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  padding-bottom: 120px;
  background: var(--bg-deep);
}

/* Ambient Subtle Lighting Orbs */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.28;
}

.glow-violet {
  width: 550px;
  height: 550px;
  top: -100px;
  left: 15%;
  background: radial-gradient(circle, var(--accent-violet) 0%, transparent 70%);
}

.glow-cyan {
  width: 500px;
  height: 500px;
  top: 30%;
  right: -80px;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
}

.glow-coral {
  width: 600px;
  height: 600px;
  bottom: -150px;
  left: 25%;
  background: radial-gradient(circle, var(--accent-coral) 0%, transparent 70%);
}

/* App Outer Container */
.app-shell {
  position: relative;
  z-index: 1;
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ==========================================================================
   1. SLEEK TOP BRAND HEADER
   ========================================================================== */
.app-top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 4px 6px;
  flex-wrap: wrap;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.site-identity-wrapper {
  display: flex;
  align-items: center;
}

.site-title-identity {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 60%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
  line-height: 1.2;
}

.top-meta-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.meta-tagline {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

.nav-brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-badge-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(6, 182, 212, 0.2));
  border: 1px solid rgba(139, 92, 246, 0.4);
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
}

.brand-name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

/* Center Transport Controls Hub */
.nav-transport-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tempo-pill-control {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.tempo-label {
  font-family: 'Geist Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.tempo-pill-control input[type="number"] {
  width: 52px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: 'Geist Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  outline: none;
}

.tempo-pill-control input[type="number"]::-webkit-inner-spin-button {
  opacity: 0.4;
}

/* Action Transport Buttons */
.transport-action-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-transport {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
}

.btn-transport:hover {
  transform: translateY(-2px);
  border-color: var(--border-highlight);
}

.btn-transport:active {
  transform: translateY(1px) scale(0.97);
}

.btn-play {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-color: rgba(16, 185, 129, 0.5);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-play:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  border-color: #34d399;
}

.btn-stop {
  background: var(--bg-surface);
  color: var(--text-secondary);
}

.btn-stop:hover {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-coral);
  border-color: rgba(244, 63, 94, 0.4);
}

.btn-clear {
  background: var(--bg-surface);
  color: var(--text-muted);
}

.btn-clear:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.08);
}

.btn-demo {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(6, 182, 212, 0.25));
  border-color: rgba(139, 92, 246, 0.5);
  color: #ffffff;
}

.btn-demo:hover {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.45), rgba(6, 182, 212, 0.45));
  box-shadow: 0 0 16px var(--accent-violet-glow);
}

.btn-metronome {
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.btn-metronome:hover {
  color: var(--accent-amber);
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.1);
}

.btn-metronome.active {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
  border-color: #fbbf24;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.45);
}
.transport-icon {
  font-size: 11px;
}

/* Capsule Toggle Mode Switches */
.mode-switch-capsule {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 3px 6px;
  border-radius: var(--radius-full);
}

.capsule-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  padding-left: 4px;
}

.capsule-toggle-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.18s ease;
}

.mode-btn:hover {
  color: var(--text-primary);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--accent-violet) 0%, #7c3aed 100%);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.4);
}

/* Nav Status Badge */
.status-indicator-badge {
  font-family: 'Geist Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.status-indicator-badge.playing {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

/* ==========================================================================
   2. FLOATING BOTTOM PERSISTENT TRANSPORT DOCK
   ========================================================================== */
.floating-transport-dock {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: auto;
  max-width: calc(100vw - 24px);
  pointer-events: auto;
  animation: float-dock-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow-x: auto;
  scrollbar-width: none;
}

.floating-transport-dock::-webkit-scrollbar {
  display: none;
}

@keyframes float-dock-in {
  from { opacity: 0; transform: translate(-50%, 20px) scale(0.96); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

.dock-inner-glass {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(14, 18, 30, 0.94);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(139, 92, 246, 0.4);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.85), 0 0 24px var(--accent-violet-glow);
  flex-wrap: nowrap;
  white-space: nowrap;
}

/* ==========================================================================
   3. BENTO GRID WORKSPACE LAYOUT (GAPLESS INTERLOCKING)
   ========================================================================== */
.bento-workspace-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-flow: dense;
  gap: 20px;
  width: 100%;
}

.bento-card {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.bento-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.bento-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.header-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-violet);
  box-shadow: 0 0 10px var(--accent-violet-glow);
}

.section-indicator-dot.dot-cyan {
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
}

.section-indicator-dot.dot-coral {
  background: var(--accent-coral);
  box-shadow: 0 0 10px var(--accent-coral-glow);
}

.section-indicator-dot.dot-amber {
  background: var(--accent-amber);
  box-shadow: 0 0 10px var(--accent-amber-glow);
}

.bento-card-header h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.stage-info-pill, .helper-text-pill {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

/* Bento Sizing Grid Rules */
.bento-stage-card {
  grid-column: span 8;
}

.bento-palette-card {
  grid-column: span 4;
  grid-row: span 2;
}

.bento-editor-card {
  grid-column: span 8;
}

.bento-composer-card {
  grid-column: span 5;
}

.bento-templates-card {
  grid-column: span 7;
}

/* ==========================================================================
   4. STAGE CANVAS & PLAYFIELD AREA
   ========================================================================== */
.stage-canvas-outer {
  position: relative;
  width: 100%;
  background: var(--chalkboard-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: visible;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
}

.stage-canvas-outer canvas {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-lg);
  cursor: crosshair;
}

/* ==========================================================================
   5. CONTEXTUAL POPOVER NOTE EDITOR
   ========================================================================== */
.stage-note-popover {
  position: absolute;
  z-index: 100;
  background: var(--bg-surface-elevated);
  border: 1px solid rgba(139, 92, 246, 0.5);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.7), 0 0 20px var(--accent-violet-glow);
  padding: 12px 14px;
  width: 220px;
  animation: popover-fade 0.12s ease-out;
  pointer-events: auto;
}

@keyframes popover-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.stage-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 6px;
}

.stage-popover-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stage-popover-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
}

.stage-popover-close-btn:hover {
  color: var(--text-primary);
}

.stage-popover-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stage-popover-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stage-popover-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.stage-popover-select {
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  font-size: 12px;
  font-weight: 600;
  outline: none;
}

.stage-popover-acc-group {
  display: flex;
  gap: 4px;
}

.stage-popover-acc-btn {
  flex: 1;
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.stage-popover-acc-btn.active {
  background: var(--accent-violet);
  color: #ffffff;
  border-color: var(--accent-violet);
}

.stage-popover-btn-danger {
  width: 100%;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: var(--accent-coral);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.stage-popover-btn-danger:hover {
  background: var(--accent-coral);
  color: #ffffff;
}

/* ==========================================================================
   6. FUNCTIONAL NOTATION PALETTE (GUITAR PRO 8 STYLE)
   ========================================================================== */
.palette-sections-scroller {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  overflow-y: auto;
  padding-right: 6px;
}

.palette-sections-scroller::-webkit-scrollbar {
  width: 5px;
}

.palette-sections-scroller::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.palette-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.collapsible-section {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 6px 8px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.collapsible-section.open {
  border-color: rgba(139, 92, 246, 0.3);
}

.palette-collapse-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  padding: 4px 6px;
  cursor: pointer;
  color: var(--text-primary);
  user-select: none;
  outline: none;
}

.palette-collapse-toggle:hover .palette-subheading {
  color: var(--text-primary);
}

.collapse-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.collapse-chevron {
  font-family: 'Geist Mono', monospace;
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-cyan);
  display: inline-block;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: rotate(0deg);
}

.collapsible-section.open .collapse-chevron {
  transform: rotate(90deg);
}

.active-modifier-badge {
  font-family: 'Geist Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.palette-collapse-content {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.palette-block-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.palette-inline-hint {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.palette-subheading {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.action-tag-btn {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
}

.action-tag-btn:hover {
  background: var(--accent-cyan);
  color: #ffffff;
}

.palette-button-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.gp8-durations-row {
  grid-template-columns: repeat(4, 1fr);
}

.gp8-compound-row {
  grid-template-columns: repeat(2, 1fr);
}

.gp8-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 4px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.gp8-btn:hover {
  transform: translateY(-2px);
  border-color: var(--border-highlight);
  background: rgba(255, 255, 255, 0.08);
}

.gp8-btn:active {
  transform: scale(0.96);
}

.gp8-btn.active {
  background: linear-gradient(135deg, var(--accent-violet) 0%, #7c3aed 100%);
  color: #ffffff;
  border-color: var(--accent-violet);
  box-shadow: 0 4px 14px var(--accent-violet-glow);
}

.custom-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.gp8-custom-badge-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: var(--accent-cyan);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.gp8-custom-badge-chip.active {
  background: var(--accent-cyan);
  color: #000000;
  box-shadow: 0 2px 10px var(--accent-cyan-glow);
}

.gp8-custom-chip-del {
  font-size: 14px;
  line-height: 1;
  color: inherit;
  opacity: 0.7;
}

.gp8-custom-chip-del:hover {
  opacity: 1;
}

/* Palette Quick Insert Panel */
.palette-insert-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-surface-elevated);
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  margin-top: 6px;
}

.insert-select-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.insert-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.insert-pitch-dropdown {
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 600;
  outline: none;
}

.btn-insert-action {
  background: linear-gradient(135deg, var(--accent-violet) 0%, var(--accent-cyan) 100%);
  border: none;
  color: #ffffff;
  padding: 9px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 14px var(--accent-violet-glow);
}

.btn-insert-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-violet-glow);
}

.btn-insert-action:active {
  transform: scale(0.98);
}

/* ==========================================================================
   7. DETAIL PITCH GRID & STEP EDITOR
   ========================================================================== */
.editor-container {
  height: 200px;
}

/* ==========================================================================
   8. PRESET & TEXT COMPOSER CARD
   ========================================================================== */
.composer-body-split {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.composer-unit {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.composer-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.composer-input-row {
  display: flex;
  gap: 8px;
}

.composer-dropdown, .composer-text-input {
  flex: 1;
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  outline: none;
  transition: border-color 0.15s ease;
}

.composer-dropdown:focus, .composer-text-input:focus {
  border-color: var(--accent-violet);
}

.btn-composer-action {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-composer-action:hover {
  background: var(--accent-violet);
  border-color: var(--accent-violet);
  color: #ffffff;
}

.tool-feedback-tag {
  font-size: 11px;
  color: var(--accent-emerald);
  margin-top: 2px;
}

/* ==========================================================================
   9. RHYTHM TEMPLATE VAULT GRID
   ========================================================================== */
.shape-template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.shape-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.shape-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-violet);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4), 0 0 14px var(--accent-violet-glow);
}

.shape-card:active {
  transform: scale(0.96);
}

.shape-badge-num {
  font-family: 'Geist Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.shape-svg-wrapper {
  width: 100%;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 2px 0;
}

.shape-svg-wrapper svg {
  width: 76px;
  height: 50px;
  fill: #f8fafc;
  stroke: #f8fafc;
  display: block;
}

.shape-svg-wrapper svg text {
  fill: #f8fafc;
  stroke: none;
  font-weight: bold;
}

.shape-svg-wrapper svg polyline {
  fill: none;
  stroke: #f8fafc;
  stroke-width: 2;
}

.shape-name {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
}

.shape-duration {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
}

/* ==========================================================================
   10. RICH FLOATING DARK-NEON TOOLTIP
   ========================================================================== */
.gp8-floating-tooltip {
  position: fixed;
  z-index: 9999;
  background: rgba(14, 18, 30, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(139, 92, 246, 0.45);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  max-width: 270px;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.95) translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.8), 0 0 24px var(--accent-violet-glow);
}

.gp8-floating-tooltip.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.gp8-tooltip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 4px;
}

.gp8-tooltip-title {
  font-size: 13px;
  font-weight: 800;
  color: #ffffff;
}

.gp8-tooltip-badge {
  font-family: 'Geist Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  background: rgba(139, 92, 246, 0.25);
  color: #c4b5fd;
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

.gp8-tooltip-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* ==========================================================================
   11. CUSTOM RHYTHM BUILDER MODAL DIALOG
   ========================================================================== */
.custom-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(5, 7, 12, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: modal-bg-fade 0.2s ease;
}

@keyframes modal-bg-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.custom-modal-dialog {
  background: var(--bg-surface);
  border: 1px solid rgba(139, 92, 246, 0.4);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8), 0 0 30px var(--accent-violet-glow);
  width: 100%;
  max-width: 580px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  animation: modal-dialog-pop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modal-dialog-pop {
  from { opacity: 0; transform: scale(0.92) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.custom-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.custom-modal-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.custom-modal-badge {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  color: #ffffff;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.custom-modal-title h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
}

.custom-modal-subtitle {
  font-size: 11px;
  color: var(--text-muted);
}

.custom-modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.custom-modal-close:hover {
  color: var(--text-primary);
}

.custom-modal-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.slot-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.slot-meter-badge {
  font-family: 'Geist Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  background: rgba(139, 92, 246, 0.2);
  color: #c4b5fd;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.slots-container {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
}

.slot-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 4px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.slot-card.active {
  border-color: var(--accent-violet);
  background: rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 12px var(--accent-violet-glow);
}

.slot-card.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.slot-num {
  font-size: 9px;
  color: var(--text-muted);
  display: block;
}

.slot-val-display {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2px;
}

.slot-component-palette {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-surface-elevated);
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.palette-choice-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.palette-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.palette-choice-btn {
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.palette-choice-btn:hover {
  border-color: var(--accent-violet);
  color: var(--text-primary);
}

.custom-preview-box {
  background: var(--chalkboard-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  padding: 12px;
}

.custom-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.valid-badge {
  color: var(--accent-emerald);
}

.invalid-badge {
  color: var(--accent-coral);
}

.custom-canvas-wrap {
  display: flex;
  justify-content: center;
}

.custom-meta-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.custom-meta-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.custom-meta-input {
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  outline: none;
}

.custom-meta-input:focus {
  border-color: var(--accent-violet);
}

.custom-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

.btn-modal-secondary {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.btn-modal-secondary:hover {
  background: rgba(255, 255, 255, 0.06);
}

.btn-modal-primary {
  background: linear-gradient(135deg, var(--accent-violet) 0%, #7c3aed 100%);
  border: none;
  color: #ffffff;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-violet-glow);
  transition: all 0.2s ease;
}

.btn-modal-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-violet-glow);
}

.btn-modal-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ==========================================================================
   12. RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1200px) {
  .bento-stage-card {
    grid-column: span 12;
    grid-row: auto;
  }
  .bento-palette-card {
    grid-column: span 12;
    grid-row: auto;
  }
  .bento-editor-card {
    grid-column: span 12;
  }
  .bento-composer-card {
    grid-column: span 12;
  }
  .bento-templates-card {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .glass-navbar {
    flex-direction: column;
    align-items: stretch;
    border-radius: var(--radius-xl);
  }
  .nav-transport-controls {
    justify-content: center;
  }
  .palette-button-matrix {
    grid-template-columns: repeat(3, 1fr);
  }
  .slots-container {
    grid-template-columns: repeat(4, 1fr);
  }
}