:root {
  --color-bg: #f6fafa;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-text: #1a1d21;
  --color-muted: #5c6563;
  --color-border: #dfe8e6;
  --color-primary: #00c5b1;
  --color-primary-hover: #00a896;
  --color-primary-subtle: #e3f9f6;
  --color-tertiary: #b8860b;
  --color-tertiary-subtle: #faf5e8;
  --color-success: #2d6a4f;
  --shadow-sm: 0 1px 2px rgba(26, 29, 33, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 29, 33, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 29, 33, 0.12);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1100px;
  --nav-height: 64px;
}

[data-theme="dark"] {
  --color-bg: #000;
  --color-surface: #182220;
  --color-surface-elevated: #1f2b28;
  --color-text: #eef5f3;
  --color-muted: #94a8a3;
  --color-border: #2a3834;
  --color-primary: #33d4c4;
  --color-primary-hover: #5ce0d3;
  --color-primary-subtle: #14302c;
  --color-tertiary: #e0b84d;
  --color-tertiary-subtle: #2a2618;
  --color-success: #6bc49a;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #000;
    --color-surface: #182220;
    --color-surface-elevated: #1f2b28;
    --color-text: #eef5f3;
    --color-muted: #94a8a3;
    --color-border: #2a3834;
    --color-primary: #33d4c4;
    --color-primary-hover: #5ce0d3;
    --color-primary-subtle: #14302c;
    --color-tertiary: #e0b84d;
    --color-tertiary-subtle: #2a2618;
    --color-success: #6bc49a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
  }
}