:root,
[data-theme="dark"] {
  color-scheme: dark;
  --font-display: "Literata", Georgia, "Times New Roman", serif;
  --font-body: "Golos Text", Inter, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;
  --container-max: 1440px;
  --sidebar-width: 248px;
  --page-gutter: 16px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --border-hairline: 1px;
  --border-strong: 2px;
  --page-block-gap: 32px;
  --section-gap: 24px;
  --stack-copy: 12px;
  --stack-actions: 16px;
  --card-padding: 16px;
  --control-gap: 8px;
  --duration-fast: 160ms;
  --duration-base: 240ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --color-bg: oklch(18% 0.012 48);
  --color-surface: oklch(22% 0.014 48);
  --color-surface-raised: oklch(26% 0.016 48);
  --color-surface-selected: oklch(31% 0.045 48);
  --color-overlay: oklch(8% 0.008 48 / 72%);
  --color-text: oklch(94% 0.012 70);
  --color-text-muted: oklch(73% 0.018 65);
  --color-text-subtle: oklch(62% 0.018 65);
  --color-action: oklch(68% 0.17 48);
  --color-action-hover: oklch(73% 0.17 51);
  --color-action-active: oklch(62% 0.16 45);
  --color-on-action: oklch(18% 0.02 48);
  --color-border: oklch(36% 0.018 50);
  --color-border-strong: oklch(49% 0.025 50);
  --color-focus: oklch(78% 0.15 60);
  --color-success: oklch(72% 0.15 145);
  --color-warning: oklch(78% 0.15 82);
  --color-error: oklch(68% 0.2 25);
  --color-info: oklch(72% 0.12 235);
  --color-disabled: oklch(48% 0.012 55);
}

[data-theme="light"] {
  color-scheme: light;
  --color-bg: oklch(97% 0.012 70);
  --color-surface: oklch(99% 0.006 70);
  --color-surface-raised: oklch(95% 0.014 70);
  --color-surface-selected: oklch(92% 0.052 60);
  --color-overlay: oklch(20% 0.012 48 / 42%);
  --color-text: oklch(23% 0.018 48);
  --color-text-muted: oklch(46% 0.024 48);
  --color-text-subtle: oklch(54% 0.022 48);
  --color-action: oklch(59% 0.18 45);
  --color-action-hover: oklch(54% 0.18 43);
  --color-action-active: oklch(49% 0.17 41);
  --color-on-action: oklch(10% 0.01 48);
  --color-border: oklch(84% 0.02 65);
  --color-border-strong: oklch(66% 0.03 55);
  --color-focus: oklch(53% 0.2 45);
  --color-success: oklch(49% 0.14 145);
  --color-warning: oklch(52% 0.14 75);
  --color-error: oklch(51% 0.19 25);
  --color-info: oklch(48% 0.13 240);
  --color-disabled: oklch(72% 0.014 60);
}

@media (min-width: 768px) {
  :root { --page-gutter: 24px; }
}

@media (min-width: 1024px) {
  :root {
    --page-gutter: 32px;
    --page-block-gap: 48px;
    --section-gap: 32px;
    --stack-copy: 16px;
    --stack-actions: 24px;
    --card-padding: 24px;
  }
}

@media (min-width: 1440px) {
  :root { --page-gutter: 48px; }
}

@media (min-width: 1920px) {
  :root { --container-max: 1680px; }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-base: 0ms;
  }
}