/* Metronome - CRT/Digital Display Aesthetic */

:root {
  --metro-bg: #0c0c10;
  --metro-surface: #141418;
  --metro-surface-2: #1a1a20;
  --metro-accent: #00ffcc;
  --metro-accent-dim: #00aa88;
  --metro-accent-glow: rgba(0, 255, 204, 0.3);
  --metro-text: #c8d8c8;
  --metro-text-dim: #707878;
  --metro-border: rgba(255, 255, 255, 0.15);
  --metro-strong: #00ffcc;
  --metro-medium: #cc66ff;
  --metro-weak: #707878;
  --metro-mute: #3a3a44;
  --metro-poly: #ff66aa;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--metro-bg);
  color: var(--metro-text);
  font-family: 'Space Grotesk', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle scanlines */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.06) 2px,
    rgba(0, 0, 0, 0.06) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

body.viz-only .metronome-container > *:not(.viz-canvas) {
  opacity: 0;
  pointer-events: none;
}

/* Container */
.metronome-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 24px 40px;
  min-height: calc(100vh - 48px);
  transition: background 0.08s ease;
}

/* Desktop two-column layout wrapper */
.metronome-desktop-layout {
  display: contents;
}

/* Beat flash effect */
.metronome-container.beat-flash {
  background: rgba(0, 255, 204, 0.02);
}

/* Canvas */
.viz-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.viz-canvas.fullscreen {
  z-index: 50;
}

/* Count-in overlay */
.count-in-overlay {
  position: fixed;
  inset: 0;
  background: rgba(12, 12, 16, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.count-in-number {
  font-size: 200px;
  font-weight: 700;
  color: var(--metro-accent);
  text-shadow:
    0 0 20px rgba(0, 255, 204, 0.4);
  animation: countPulse 0.5s ease-out;
}

@keyframes countPulse {
  0% { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* Header */
.metronome-header {
  text-align: center;
  margin-bottom: 32px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 16px;
}

.metronome-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 4px;
  margin: 0;
  color: var(--metro-accent);
  text-shadow:
    0 0 8px rgba(0, 255, 204, 0.3);
}

.time-sig-display {
  font-family: 'Space Mono', monospace;
  font-size: 18px;
  color: var(--metro-text-dim);
  font-weight: 500;
  letter-spacing: 1px;
}

/* Tempo Display */
.tempo-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.tempo-adjust {
  background: var(--metro-surface);
  border: 2px solid var(--metro-border);
  color: var(--metro-text-dim);
  width: 44px;
  height: 36px;
  font-size: 13px;
  font-family: 'Space Mono', monospace;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.1s;
}

.tempo-adjust:hover {
  border-color: var(--metro-accent);
  color: var(--metro-text);
}

.tempo-adjust:active {
  background: var(--metro-accent);
  color: var(--metro-bg);
}

.tempo-value {
  text-align: center;
  min-width: 130px;
}

.bpm-number {
  font-size: 72px;
  font-weight: 700;
  font-family: 'Space Mono', monospace;
  color: var(--metro-text);
  line-height: 1;
  display: block;
}

.tempo-marking {
  font-size: 14px;
  color: var(--metro-accent-dim);
  letter-spacing: 2px;
  display: block;
  margin-top: 2px;
  font-style: italic;
}

.bpm-label {
  font-size: 12px;
  color: var(--metro-text-dim);
  letter-spacing: 2px;
  display: block;
  margin-top: 4px;
}

/* Tempo Slider */
.tempo-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--metro-surface-2);
  border-radius: 3px;
  margin-bottom: 28px;
  cursor: pointer;
}

.tempo-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--metro-accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 12px var(--metro-accent-glow);
}

.tempo-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--metro-accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 12px var(--metro-accent-glow);
}

/* Beat Indicators */
.beat-indicators {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.beat-dot {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--metro-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.08s ease;
  background: var(--metro-surface);
  position: relative;
}

.beat-dot .beat-number {
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
}

.beat-dot .accent-label {
  font-size: 9px;
  color: var(--metro-text-dim);
  margin-top: 1px;
}

.beat-dot.strong {
  border-color: var(--metro-strong);
  color: var(--metro-strong);
}

.beat-dot.medium {
  border-color: var(--metro-medium);
  color: var(--metro-medium);
}

.beat-dot.weak {
  border-color: var(--metro-weak);
  color: var(--metro-weak);
}

.beat-dot.mute {
  border-color: var(--metro-mute);
  color: var(--metro-mute);
  opacity: 0.5;
}

.beat-dot.active {
  transform: scale(1.2);
}

.beat-dot.active.strong {
  background: var(--metro-strong);
  color: var(--metro-bg);
  box-shadow: 0 0 24px rgba(0, 255, 204, 0.6), 0 0 48px rgba(0, 255, 204, 0.2);
}

.beat-dot.active.medium {
  background: var(--metro-medium);
  color: var(--metro-bg);
  box-shadow: 0 0 24px rgba(204, 102, 255, 0.6), 0 0 48px rgba(204, 102, 255, 0.2);
}

.beat-dot.active.weak {
  background: var(--metro-weak);
  color: var(--metro-bg);
  box-shadow: 0 0 12px rgba(112, 120, 120, 0.4);
}

.beat-dot:hover {
  border-color: var(--metro-accent);
}

/* Poly Indicators */
.poly-indicators {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.poly-label {
  font-size: 12px;
  color: var(--metro-poly);
  font-weight: 600;
  margin-right: 4px;
}

.poly-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--metro-poly);
  opacity: 0.4;
  transition: all 0.08s ease;
}

.poly-dot.active {
  background: var(--metro-poly);
  opacity: 1;
  transform: scale(1.25);
  box-shadow: 0 0 16px rgba(255, 102, 170, 0.6);
}

/* Play Controls */
.play-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 32px;
}

.play-controls-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 80px;
}

.tap-button {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--metro-surface);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.1s;
  letter-spacing: 1px;
}

.tap-button:hover {
  border-color: var(--metro-accent);
}

.tap-button:active {
  background: var(--metro-accent);
  border-color: var(--metro-accent);
  color: var(--metro-bg);
  transform: scale(0.93);
}

.play-button {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--metro-accent);
  border: none;
  color: var(--metro-bg);
  font-size: 36px;
  cursor: pointer;
  transition: all 0.12s;
  box-shadow: 0 0 30px var(--metro-accent-glow), 0 0 60px rgba(0, 255, 204, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.play-button:hover {
  transform: scale(1.06);
  box-shadow: 0 0 40px var(--metro-accent-glow), 0 0 80px rgba(0, 255, 204, 0.15);
}

.play-button.playing {
  background: #ff3333;
  box-shadow: 0 0 30px rgba(255, 51, 51, 0.5), 0 0 60px rgba(255, 51, 51, 0.15);
}

.keyboard-hint {
  font-size: 11px;
  color: var(--metro-text-dim);
  text-align: center;
  white-space: nowrap;
}

.keyboard-hint kbd {
  display: inline-block;
  padding: 1px 5px;
  background: var(--metro-surface);
  border: 1px solid var(--metro-border);
  border-radius: 2px;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  margin-right: 2px;
}

/* Panel Tabs */
.panel-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 0;
  border-bottom: 2px solid var(--metro-border);
}

.panel-tab {
  flex: 1;
  padding: 12px 0;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--metro-text-dim);
  font-size: 13px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.1s;
  margin-bottom: -2px;
}

.panel-tab:hover {
  color: var(--metro-text);
}

.panel-tab.active {
  color: var(--metro-accent);
  border-bottom-color: var(--metro-accent);
}

/* Control Panel */
.control-panel {
  background: var(--metro-surface);
  border: 2px solid var(--metro-border);
  border-top: none;
  border-radius: 0 0 4px 4px;
  padding: 20px;
}

.control-group {
  margin-bottom: 20px;
}

.control-group:last-child {
  margin-bottom: 0;
}

.control-group.half {
  flex: 1;
}

.control-row {
  display: flex;
  gap: 15px;
}

.control-label {
  display: block;
  font-size: 12px;
  color: var(--metro-text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.control-hint {
  font-size: 11px;
  color: var(--metro-text-dim);
  margin: 5px 0 0;
  opacity: 0.7;
}

/* Time Signature Grid */
.time-sig-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.time-sig-btn {
  padding: 10px 0;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 14px;
  font-family: 'Space Mono', monospace;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.1s;
}

.time-sig-btn:hover {
  border-color: var(--metro-accent);
}

.time-sig-btn.active {
  background: var(--metro-accent);
  border-color: var(--metro-accent);
  color: var(--metro-bg);
  box-shadow: 0 0 10px var(--metro-accent-glow);
}

.custom-time-sig {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 18px;
  color: var(--metro-text-dim);
}

.time-sig-input {
  width: 60px;
  padding: 8px;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 16px;
  font-family: 'Space Mono', monospace;
  text-align: center;
  border-radius: 2px;
}

.time-sig-select {
  padding: 8px 12px;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 16px;
  font-family: 'Space Mono', monospace;
  border-radius: 2px;
  cursor: pointer;
}

/* Subdivision Grid */
.subdivision-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.subdiv-btn {
  padding: 12px 0;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.1s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.subdiv-btn:hover {
  border-color: var(--metro-accent);
}

.subdiv-btn.active {
  background: var(--metro-accent);
  border-color: var(--metro-accent);
  color: var(--metro-bg);
  box-shadow: 0 0 10px var(--metro-accent-glow);
}

.subdiv-symbol {
  font-size: 18px;
}

.subdiv-name {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Slider */
.control-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--metro-surface-2);
  border-radius: 3px;
  cursor: pointer;
}

.control-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--metro-accent);
  border-radius: 50%;
  cursor: pointer;
}

.control-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--metro-accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* Select */
.control-select {
  width: 100%;
  padding: 10px 12px;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 14px;
  font-family: inherit;
  border-radius: 2px;
  cursor: pointer;
}

/* Input */
.control-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 14px;
  font-family: 'Space Mono', monospace;
  border-radius: 2px;
  text-align: center;
}

/* Toggle */
.toggle-control {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.toggle-control input {
  width: 20px;
  height: 20px;
  accent-color: var(--metro-accent);
  cursor: pointer;
}

.toggle-label {
  font-size: 14px;
  color: var(--metro-text);
}

/* Polyrhythm Grid */
.polyrhythm-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.poly-btn {
  padding: 10px 0;
  background: var(--metro-surface-2);
  border: 2px solid var(--metro-border);
  color: var(--metro-text);
  font-size: 13px;
  font-family: 'Space Mono', monospace;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.1s;
}

.poly-btn:hover {
  border-color: var(--metro-poly);
}

.poly-btn.active {
  background: var(--metro-poly);
  border-color: var(--metro-poly);
  color: var(--metro-bg);
  box-shadow: 0 0 10px rgba(255, 102, 170, 0.3);
}

/* Trainer Progress */
.trainer-progress {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 2px solid var(--metro-border);
}

.trainer-bar-display {
  font-size: 13px;
  color: var(--metro-text);
  margin-bottom: 8px;
  text-align: center;
}

.trainer-progress-bar {
  height: 8px;
  background: var(--metro-surface-2);
  border-radius: 4px;
  overflow: hidden;
}

.trainer-progress-fill {
  height: 100%;
  background: var(--metro-accent);
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--metro-accent-glow);
  border-radius: 4px;
}

/* Accent Tip */
.accent-tip {
  font-size: 12px;
  color: var(--metro-text-dim);
  padding: 12px;
  background: var(--metro-surface-2);
  border-radius: 4px;
  line-height: 1.6;
  border: 1px solid var(--metro-border);
}

.accent-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.legend-item {
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 11px;
}

.legend-item.strong { background: var(--metro-strong); color: var(--metro-bg); }
.legend-item.medium { background: var(--metro-medium); color: var(--metro-bg); }
.legend-item.weak { background: var(--metro-weak); color: var(--metro-bg); }
.legend-item.mute { background: var(--metro-mute); color: var(--metro-text-dim); }

/* Footer */
.metronome-footer {
  margin-top: 32px;
  text-align: center;
}

/* ===== Desktop Layout (>= 900px) ===== */
@media (min-width: 900px) {
  .metronome-container {
    max-width: 900px;
    padding: 24px 32px 24px;
  }

  .metronome-desktop-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
  }

  /* Left column: tempo display + beat indicators + play controls */
  .metronome-main-col {
    position: sticky;
    top: 48px;
  }

  .metronome-header {
    margin-bottom: 20px;
  }

  .metronome-title {
    font-size: 26px;
    letter-spacing: 5px;
  }

  .time-sig-display {
    font-size: 18px;
  }

  /* Bigger tempo display */
  .bpm-number {
    font-size: 80px;
  }

  .tempo-marking {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .bpm-label {
    font-size: 12px;
  }

  .tempo-adjust {
    width: 48px;
    height: 36px;
    font-size: 13px;
  }

  .tempo-display {
    gap: 12px;
    margin-bottom: 10px;
  }

  .tempo-slider {
    height: 6px;
    margin-bottom: 20px;
  }

  .tempo-slider::-webkit-slider-thumb {
    width: 20px;
    height: 20px;
  }

  .tempo-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
  }

  /* Larger beat indicators */
  .beat-indicators {
    gap: 10px;
    margin-bottom: 20px;
  }

  .beat-dot {
    width: 52px;
    height: 52px;
  }

  .beat-dot .beat-number {
    font-size: 16px;
  }

  .beat-dot .accent-label {
    font-size: 9px;
  }

  /* Bigger play controls */
  .play-controls {
    gap: 24px;
    margin-bottom: 0;
  }

  .play-button {
    width: 88px;
    height: 88px;
    font-size: 36px;
  }

  .tap-button {
    width: 60px;
    height: 60px;
    font-size: 13px;
  }

  .play-controls-side {
    min-width: 80px;
  }

  .keyboard-hint {
    font-size: 11px;
  }

  /* Poly indicators */
  .poly-indicators {
    gap: 8px;
    margin-bottom: 20px;
  }

  .poly-dot {
    width: 20px;
    height: 20px;
  }

  .poly-label {
    font-size: 12px;
  }

  /* Right column: control panels fill width */
  .metronome-controls-col .panel-tabs {
    margin-bottom: 0;
  }

  .metronome-controls-col .control-panel {
    padding: 18px;
  }

  .control-row {
    flex-direction: row;
    gap: 15px;
  }

  .time-sig-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .time-sig-btn {
    padding: 9px 0;
    font-size: 13px;
  }

  .subdivision-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .subdiv-btn {
    padding: 10px 0;
  }

  .subdiv-symbol {
    font-size: 18px;
  }

  .subdiv-name {
    font-size: 10px;
  }

  .polyrhythm-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .poly-btn {
    padding: 9px 0;
    font-size: 13px;
  }

  .control-label {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .control-select {
    padding: 10px 12px;
    font-size: 14px;
  }

  .toggle-label {
    font-size: 14px;
  }

  .control-hint {
    font-size: 11px;
  }

  /* Trainer progress */
  .trainer-bar-display {
    font-size: 13px;
  }

  .trainer-progress-bar {
    height: 8px;
  }

  .accent-tip {
    font-size: 12px;
    padding: 12px;
  }

  .control-group {
    margin-bottom: 16px;
  }
}

/* ===== Wide Desktop (>= 1200px) ===== */
@media (min-width: 1200px) {
  .metronome-container {
    max-width: 1040px;
    padding: 28px 48px 28px;
  }

  .metronome-desktop-layout {
    gap: 44px;
  }

  .bpm-number {
    font-size: 92px;
  }

  .beat-dot {
    width: 58px;
    height: 58px;
  }

  .beat-dot .beat-number {
    font-size: 18px;
  }

  .play-button {
    width: 96px;
    height: 96px;
    font-size: 40px;
  }
}

/* ===== Mobile (<=500px) ===== */
@media (max-width: 500px) {
  .metronome-container {
    padding: 15px 15px 20px;
  }

  .bpm-number {
    font-size: 56px;
  }

  .tempo-adjust {
    width: 38px;
    height: 32px;
    font-size: 11px;
  }

  .time-sig-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .time-sig-btn {
    padding: 8px 0;
    font-size: 12px;
  }

  .subdivision-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .subdiv-btn {
    padding: 10px 0;
  }

  .beat-dot {
    width: 40px;
    height: 40px;
  }

  .beat-dot .beat-number {
    font-size: 13px;
  }

  .play-button {
    width: 80px;
    height: 80px;
    font-size: 28px;
  }

  .tap-button {
    width: 56px;
    height: 56px;
    font-size: 12px;
  }

  .play-controls-side {
    min-width: 60px;
  }

  .polyrhythm-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .control-row {
    flex-direction: column;
    gap: 15px;
  }

  .metronome-header {
    gap: 10px;
  }

  .metronome-title {
    font-size: 22px;
    letter-spacing: 3px;
  }

  .time-sig-display {
    font-size: 15px;
  }

  /* Reduce scanlines on mobile */
  body::before {
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.05) 2px,
      rgba(0, 0, 0, 0.05) 4px
    );
  }
}