:root {
  color-scheme: light dark;
  --bg: #faf8f5;
  --panel-bg: #ffffff;
  --text: #23201c;
  --muted-text: #6b6459;
  --accent: #b5502f;
  --border: #ddd4c8;
  --dot: #b5502f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1a17;
    --panel-bg: #262320;
    --text: #f2ede4;
    --muted-text: #b3a999;
    --accent: #e2825a;
    --border: #443e35;
    --dot: #e2825a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  padding: 24px 16px 48px;
}

.page {
  max-width: 900px;
  margin: 0 auto;
}

h1 {
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 4px;
}

.subtitle {
  text-align: center;
  color: var(--muted-text);
  margin-top: 0;
  margin-bottom: 4px;
}

.version-tag {
  text-align: center;
  color: var(--muted-text);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 0;
  margin-bottom: 28px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 12px;
}

.controls label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: var(--muted-text);
  gap: 4px;
}

.controls select {
  font-size: 1rem;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-bg);
  color: var(--text);
}

.chord-name {
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
  margin: 8px 0 28px;
  color: var(--accent);
}

.diagrams {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
}

.diagram-panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  width: 240px;
  text-align: center;
}

.diagram-panel h2 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}

.diagram-panel svg {
  display: block;
  margin: 0 auto;
}

.chord-nut {
  fill: var(--text);
}

.chord-fret-line,
.chord-string-line {
  stroke: var(--muted-text);
  stroke-width: 1.5;
}

.chord-barre {
  stroke: var(--dot);
  stroke-width: 14;
  stroke-linecap: round;
  opacity: 0.9;
}

.chord-dot {
  fill: var(--dot);
}

.chord-finger-label {
  fill: var(--panel-bg);
  font-size: 11px;
  font-weight: 700;
}

.chord-open-mute {
  fill: var(--text);
  font-size: 14px;
  font-weight: 600;
}

.chord-string-name {
  fill: var(--muted-text);
  font-size: 11px;
}

.chord-fret-label {
  fill: var(--muted-text);
  font-size: 12px;
}

.chord-missing {
  fill: var(--muted-text);
  font-size: 12px;
}

@media (max-width: 540px) {
  .diagrams {
    flex-direction: column;
    align-items: center;
  }
}