/* Tone Circle - Circle of Fifths Explorer - CRT Aesthetic */
:root {
  --tc-bg: #0c0c10;
  --tc-surface: #141418;
  --tc-border: rgba(255, 255, 255, 0.15);
  --tc-text: #c8d8c8;
  --tc-text-dim: #707878;
  --tc-accent: #00ffcc;
  --tc-accent-glow: rgba(0, 255, 204, 0.4);
  --tc-minor: #cc66ff;
  --tc-minor-glow: rgba(204, 102, 255, 0.4);
  --tc-fourth: #ff9933;
  --tc-fifth: #00cc88;
  --tc-recording: #ff3333;
  --tc-major-radius: 135px;
  --tc-minor-radius: 80px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--tc-bg);
  color: var(--tc-text);
  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 1px,
    rgba(0, 0, 0, 0.1) 1px,
    rgba(0, 0, 0, 0.1) 2px
  );
  pointer-events: none;
  z-index: 9999;
}

.tone-circle-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px 20px 100px;
  min-height: calc(100vh - 48px);
}

/* Desktop layout wrapper */
.tc-desktop-layout {
  display: contents;
}

/* Header */
.tone-header {
  text-align: center;
  margin-bottom: 20px;
}

.tone-title {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 8px;
  color: var(--tc-text);
  margin-bottom: 10px;
}

.key-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  min-height: 28px;
}

.current-key {
  font-size: 20px;
  font-weight: 600;
  color: var(--tc-accent);
  text-transform: capitalize;
}

.key-sig {
  font-size: 18px;
  color: var(--tc-text-dim);
  font-family: serif;
}

/* Circle Area */
.circle-area {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  margin: 0 auto 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Use a positioning container that doesn't need transform for centering */
.circle-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  transition: transform 0.5s ease;
  transform-origin: center center;
}

/* Circle Keys */
.circle-key {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  margin: -25px 0 0 -25px;
  border-radius: 50%;
  border: 2px solid var(--tc-border);
  background: var(--tc-surface);
  color: var(--tc-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s, box-shadow 0.1s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.circle-key:hover {
  border-color: var(--tc-accent);
  z-index: 20;
  box-shadow: 0 0 15px var(--tc-accent-glow);
}

.circle-key:focus {
  outline: none;
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 204, 0.2);
}

.circle-key.major {
  width: 52px;
  height: 52px;
  margin: -26px 0 0 -26px;
}

.circle-key.minor {
  width: 38px;
  height: 38px;
  margin: -19px 0 0 -19px;
  font-size: 11px;
  background: rgba(204, 102, 255, 0.1);
  border-color: rgba(204, 102, 255, 0.3);
}

.circle-key.minor:hover {
  border-color: var(--tc-minor);
  box-shadow: 0 0 15px var(--tc-minor-glow);
}

.circle-key.selected {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.15);
  box-shadow: 0 0 20px var(--tc-accent-glow);
}

.circle-key.minor.selected {
  border-color: var(--tc-minor);
  background: rgba(204, 102, 255, 0.2);
  box-shadow: 0 0 20px var(--tc-minor-glow);
}

.circle-key.playing {
  animation: pulse 0.3s ease;
  border-color: var(--tc-accent);
  box-shadow: 0 0 30px var(--tc-accent-glow);
}

.circle-key.minor.playing {
  border-color: var(--tc-minor);
  box-shadow: 0 0 30px var(--tc-minor-glow);
}

.circle-key.fourth {
  border-color: var(--tc-fourth);
  background: rgba(255, 153, 51, 0.1);
}

.circle-key.fourth:hover {
  box-shadow: 0 0 15px rgba(255, 153, 51, 0.4);
}

.circle-key.fifth {
  border-color: var(--tc-fifth);
  background: rgba(0, 204, 136, 0.1);
}

.circle-key.fifth:hover {
  box-shadow: 0 0 15px rgba(0, 204, 136, 0.4);
}

.circle-key.relative {
  border-color: var(--tc-minor);
  background: rgba(204, 102, 255, 0.15);
}

@keyframes pulse {
  0% { box-shadow: 0 0 15px var(--tc-accent-glow); }
  50% { box-shadow: 0 0 40px var(--tc-accent-glow), 0 0 60px var(--tc-accent-glow); }
  100% { box-shadow: 0 0 20px var(--tc-accent-glow); }
}

.key-name {
  line-height: 1;
}

.roman-numeral {
  font-size: 8px;
  color: var(--tc-text-dim);
  margin-top: 2px;
  opacity: 0.8;
}

.drone-indicator {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 14px;
  height: 14px;
  background: var(--tc-accent);
  border-radius: 2px;
  font-size: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tc-bg);
  animation: drone-pulse 1s infinite;
}

@keyframes drone-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

/* Center Display */
.circle-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--tc-surface);
  border: 2px solid var(--tc-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 5;
}

.center-key {
  font-size: 22px;
  font-weight: 700;
  color: var(--tc-accent);
  line-height: 1;
}

.center-mode {
  font-size: 10px;
  color: var(--tc-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}

.center-notes {
  font-size: 9px;
  color: var(--tc-text-dim);
  margin-top: 4px;
  max-width: 80px;
  line-height: 1.2;
}

.center-hint {
  font-size: 11px;
  color: var(--tc-text-dim);
}

/* Panel Tabs */
.panel-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 15px;
  padding: 4px;
  background: var(--tc-surface);
  border-radius: 4px;
  border: 1px solid var(--tc-border);
}

.panel-tab {
  flex: 1;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: var(--tc-text-dim);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.1s;
}

.panel-tab:hover {
  color: var(--tc-text);
  background: rgba(255, 255, 255, 0.03);
}

.panel-tab.active {
  background: var(--tc-bg);
  color: var(--tc-accent);
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.2);
}

/* Control Panel */
.control-panel {
  background: var(--tc-surface);
  border-radius: 4px;
  padding: 20px;
  margin-bottom: 20px;
  border: 2px solid var(--tc-border);
}

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

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

.control-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--tc-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.control-label .hint {
  font-size: 10px;
  text-transform: none;
  letter-spacing: 0;
  opacity: 0.6;
}

.control-row {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
}

.control-group.half {
  flex: 1;
  min-width: 0;
}

/* Inline toggle with optional slider (e.g., Arpeggiate) */
.control-row > .toggle-control {
  flex-shrink: 0;
}

.control-group.mini {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 0;
  flex: 1;
  min-width: 120px;
  padding: 8px 12px;
  background: var(--tc-bg);
  border-radius: 2px;
  border: 1px solid var(--tc-border);
}

.control-group.mini input[type="range"] {
  flex: 1;
  min-width: 60px;
}

.control-group.mini span {
  font-size: 11px;
  color: var(--tc-text-dim);
  min-width: 45px;
  text-align: right;
}

/* Chord Type Grid */
.chord-type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.chord-type-btn {
  padding: 10px 4px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  color: var(--tc-text);
  font-size: 11px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.chord-type-btn:hover {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.05);
}

.chord-type-btn.active {
  background: rgba(0, 255, 204, 0.15);
  border-color: var(--tc-accent);
  color: var(--tc-accent);
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.2);
}

/* Quick Chords */
.quick-chords {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.quick-chords button {
  padding: 8px 12px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  color: var(--tc-text);
  font-size: 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.quick-chords button:hover {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.1);
}

.quick-chords button:active {
  transform: scale(0.95);
}

/* Progression Grid */
.progression-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.progression-btn {
  padding: 10px 4px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  color: var(--tc-text);
  font-size: 11px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.progression-btn:hover {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.05);
}

.progression-btn.active {
  background: rgba(0, 255, 204, 0.15);
  border-color: var(--tc-accent);
  color: var(--tc-accent);
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.2);
}

/* Progression Chords Display */
.progression-chords {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.prog-chord {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 14px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
  min-width: 60px;
}

.prog-chord:hover {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.05);
}

.prog-chord:active {
  transform: scale(0.95);
}

.prog-chord.active {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.15);
  box-shadow: 0 0 15px var(--tc-accent-glow);
}

.prog-roman {
  font-size: 14px;
  font-weight: 600;
  color: var(--tc-accent);
}

.prog-name {
  font-size: 11px;
  color: var(--tc-text-dim);
  margin-top: 2px;
}

/* Play Progression Button */
.play-progression-btn {
  padding: 12px 24px;
  border: 2px solid var(--tc-accent);
  background: transparent;
  color: var(--tc-accent);
  font-size: 14px;
  font-weight: 600;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
  white-space: nowrap;
}

.play-progression-btn:hover:not(:disabled) {
  background: var(--tc-accent);
  color: var(--tc-bg);
  box-shadow: 0 0 15px var(--tc-accent-glow);
}

.play-progression-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.play-progression-btn.playing {
  background: var(--tc-accent);
  color: var(--tc-bg);
  box-shadow: 0 0 15px var(--tc-accent-glow);
}

/* Recording Controls */
.recording-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.record-btn,
.play-btn,
.clear-btn {
  padding: 10px 14px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  color: var(--tc-text);
  font-size: 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.record-btn:hover {
  border-color: var(--tc-recording);
  background: rgba(255, 51, 51, 0.05);
}

.record-btn.recording {
  border-color: var(--tc-recording);
  background: rgba(255, 51, 51, 0.15);
  color: var(--tc-recording);
  animation: recording-pulse 1s infinite;
}

@keyframes recording-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 51, 51, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(255, 51, 51, 0); }
}

.play-btn:hover:not(:disabled),
.clear-btn:hover:not(:disabled) {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.05);
}

.play-btn:disabled,
.clear-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.recorded-display {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px;
  background: var(--tc-bg);
  border-radius: 2px;
  border: 1px solid var(--tc-border);
  min-height: 44px;
}

.recorded-chord {
  padding: 4px 10px;
  background: rgba(0, 255, 204, 0.1);
  border-radius: 2px;
  font-size: 12px;
  color: var(--tc-accent);
}

/* Instrument Grid */
.instrument-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.instrument-btn {
  padding: 10px 4px;
  border: 2px solid var(--tc-border);
  background: var(--tc-bg);
  color: var(--tc-text);
  font-size: 11px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
  text-transform: capitalize;
}

.instrument-btn:hover {
  border-color: var(--tc-accent);
  background: rgba(0, 255, 204, 0.05);
}

.instrument-btn.active {
  background: rgba(0, 255, 204, 0.15);
  border-color: var(--tc-accent);
  color: var(--tc-accent);
  box-shadow: 0 0 10px rgba(0, 255, 204, 0.2);
}

/* Toggle Controls */
.toggle-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.toggle-control input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--tc-accent);
  cursor: pointer;
}

.toggle-label {
  font-size: 13px;
  color: var(--tc-text);
}

/* Sliders */
input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--tc-border);
  border-radius: 2px;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--tc-accent);
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.1s;
  box-shadow: 0 0 8px var(--tc-accent-glow);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--tc-accent);
  border-radius: 2px;
  cursor: pointer;
  border: none;
}

/* Drone Controls */
.drone-stop {
  padding: 8px 16px;
  border: 2px solid var(--tc-accent);
  background: rgba(0, 255, 204, 0.1);
  color: var(--tc-accent);
  font-size: 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.drone-stop:hover {
  background: var(--tc-accent);
  color: var(--tc-bg);
  box-shadow: 0 0 15px var(--tc-accent-glow);
}

.drone-hint {
  font-size: 12px;
  color: var(--tc-text-dim);
  font-style: italic;
}

/* Footer */
.tone-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 15px 20px;
  background: linear-gradient(to top, var(--tc-bg) 50%, transparent 100%);
  pointer-events: none;
}

.shortcuts {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  font-size: 11px;
  color: var(--tc-text-dim);
}

.shortcuts kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--tc-surface);
  border: 2px solid var(--tc-border);
  border-radius: 2px;
  font-family: inherit;
  font-size: 10px;
  margin-right: 4px;
}

/* ===== Desktop Layout (>= 900px) ===== */
@media (min-width: 900px) {
  .tone-circle-container {
    max-width: 960px;
    padding: 24px 32px 36px;
  }

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

  /* Left column: circle + header */
  .tc-circle-col {
    position: sticky;
    top: 48px;
  }

  .tone-header {
    margin-bottom: 16px;
  }

  .tone-title {
    font-size: 22px;
    letter-spacing: 8px;
    margin-bottom: 6px;
  }

  .current-key {
    font-size: 20px;
  }

  .key-sig {
    font-size: 18px;
  }

  /* Larger circle */
  :root {
    --tc-major-radius: 150px;
    --tc-minor-radius: 90px;
  }

  .circle-area {
    max-width: 420px;
    margin: 0 auto 12px;
  }

  .circle-key.major {
    width: 54px;
    height: 54px;
    margin: -27px 0 0 -27px;
    font-size: 14px;
  }

  .circle-key.minor {
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    font-size: 12px;
  }

  .circle-center {
    width: 95px;
    height: 95px;
  }

  .center-key {
    font-size: 24px;
  }

  .center-mode {
    font-size: 10px;
    letter-spacing: 1px;
  }

  .center-notes {
    font-size: 10px;
    max-width: 85px;
  }

  .roman-numeral {
    font-size: 8px;
  }

  .drone-indicator {
    width: 14px;
    height: 14px;
    font-size: 8px;
  }

  /* Right column: controls */
  .tc-controls-col .panel-tabs {
    margin-bottom: 12px;
  }

  .panel-tab {
    padding: 10px 12px;
    font-size: 13px;
  }

  .control-panel {
    padding: 18px;
  }

  .control-label {
    font-size: 11px;
    margin-bottom: 8px;
  }

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

  .chord-type-btn {
    padding: 9px 4px;
    font-size: 11px;
  }

  .quick-chords button {
    padding: 8px 12px;
    font-size: 12px;
  }

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

  .progression-btn {
    padding: 9px 4px;
    font-size: 11px;
  }

  .prog-chord {
    padding: 10px 14px;
    min-width: 60px;
  }

  .prog-roman {
    font-size: 14px;
  }

  .prog-name {
    font-size: 11px;
  }

  .play-progression-btn {
    padding: 12px 22px;
    font-size: 14px;
  }

  .instrument-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
  }

  .instrument-btn {
    padding: 9px 4px;
    font-size: 11px;
  }

  .toggle-label {
    font-size: 13px;
  }

  .recording-controls {
    gap: 8px;
  }

  .record-btn,
  .play-btn,
  .clear-btn {
    padding: 10px 14px;
    font-size: 12px;
  }

  .recorded-display {
    padding: 10px;
  }

  .recorded-chord {
    padding: 4px 10px;
    font-size: 12px;
  }

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

  /* Footer shortcuts */
  .tone-footer {
    padding: 15px 32px;
  }

  .shortcuts {
    gap: 16px;
    font-size: 11px;
  }
}

/* ===== Wide Desktop (>= 1200px) ===== */
@media (min-width: 1200px) {
  .tone-circle-container {
    max-width: 1100px;
    padding: 28px 48px 36px;
  }

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

  .tone-title {
    font-size: 26px;
  }

  /* Even larger circle */
  :root {
    --tc-major-radius: 170px;
    --tc-minor-radius: 102px;
  }

  .circle-area {
    max-width: 470px;
  }

  .circle-key.major {
    width: 60px;
    height: 60px;
    margin: -30px 0 0 -30px;
    font-size: 15px;
  }

  .circle-key.minor {
    width: 44px;
    height: 44px;
    margin: -22px 0 0 -22px;
    font-size: 13px;
  }

  .circle-center {
    width: 105px;
    height: 105px;
  }

  .center-key {
    font-size: 28px;
  }

  .center-notes {
    font-size: 11px;
    max-width: 95px;
  }
}

/* ===== Mobile (<=480px) ===== */
@media (max-width: 480px) {
  :root {
    --tc-major-radius: 115px;
    --tc-minor-radius: 68px;
  }

  .tone-circle-container {
    padding: 15px 15px 90px;
  }

  .tone-title {
    font-size: 16px;
    letter-spacing: 4px;
  }

  .circle-area {
    max-width: 320px;
  }

  .circle-key.major {
    width: 42px;
    height: 42px;
    margin: -21px 0 0 -21px;
    font-size: 12px;
  }

  .circle-key.minor {
    width: 32px;
    height: 32px;
    margin: -16px 0 0 -16px;
    font-size: 10px;
  }

  .circle-center {
    width: 70px;
    height: 70px;
  }

  .center-key {
    font-size: 18px;
  }

  .center-notes {
    display: none;
  }

  .chord-type-grid,
  .progression-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .instrument-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .control-panel {
    padding: 15px;
  }

  .shortcuts {
    gap: 8px;
    font-size: 10px;
  }

  .shortcuts span {
    display: none;
  }

  .shortcuts span:first-child {
    display: inline;
  }

  /* Reduce scanlines on mobile */
  body::before {
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.08) 2px,
      rgba(0, 0, 0, 0.08) 4px
    );
  }
}