:root {
  color-scheme: light dark;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.78rem;
  --font-size-sm: 0.9rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.6rem;
  --font-size-xxl: 3rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-10: 5rem;
  --space-12: 7rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --z-sticky: 10;
  --z-skip-link: 100;
  --shadow-sm: 0 12px 34px rgba(24, 38, 50, 0.08);
  --shadow-focus: 0 0 0 4px rgba(18, 119, 112, 0.22);
  --color-bg: #fbfcfd;
  --color-surface: #ffffff;
  --color-surface-alt: #eef5f4;
  --color-text: #17202a;
  --color-muted: #5e6b78;
  --color-border: #d8e2ea;
  --color-accent: #14756f;
  --color-accent-soft: #dff2ee;
  --color-accent-contrast: #ffffff;
  --color-info: #2f63a5;
  --color-warning: #a56514;
  --color-danger: #a94438;
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #101417;
  --color-surface: #171d21;
  --color-surface-alt: #1d292b;
  --color-text: #edf5f3;
  --color-muted: #a9b8bd;
  --color-border: #314147;
  --color-accent: #72d5ca;
  --color-accent-soft: #143b38;
  --color-accent-contrast: #092321;
  --shadow-sm: 0 12px 34px rgba(0, 0, 0, 0.3);
  --shadow-focus: 0 0 0 4px rgba(114, 213, 202, 0.28);
}

@media (prefers-color-scheme: dark) {
  [data-theme="system"] {
    color-scheme: dark;
    --color-bg: #101417;
    --color-surface: #171d21;
    --color-surface-alt: #1d292b;
    --color-text: #edf5f3;
    --color-muted: #a9b8bd;
    --color-border: #314147;
    --color-accent: #72d5ca;
    --color-accent-soft: #143b38;
    --color-accent-contrast: #092321;
    --shadow-sm: 0 12px 34px rgba(0, 0, 0, 0.3);
    --shadow-focus: 0 0 0 4px rgba(114, 213, 202, 0.28);
  }
}