/**
 * Classic Wood — mahogany / oak luxury with carved-piece feel.
 */
[data-theme="classic_wood"] {
  --cp-bg: #2b1d14;
  --cp-fg: #f3e6d4;
  --cp-surface: #3d2a1c;
  --cp-border: #6b4a32;
  --cp-muted: #c4a484;
  --cp-accent: #d4a574;
  --cp-accent-soft: rgba(212, 165, 116, 0.22);
  --cp-input-bg: #24160f;
  --cp-square-light: #e8c39e;
  --cp-square-dark: #8b5a2b;
  --cp-board-shadow: 0 10px 28px rgba(20, 10, 4, 0.55);
  --cp-piece-filter: sepia(0.35) saturate(1.1);
}