:root {
  --ink: #171717;
  --paper: #f7f5f2;
  --surface: #ffffff;
  --muted: #68645f;
  --accent: #b42318;
  --accent-strong: #8f1d14;
  --rule: #d9d5cf;
  --link: #9b1c14;
  --on-accent: #ffffff;

  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
    serif;

  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --page-width: 70rem;
  --prose-width: 42rem;
  --header-height: 4.25rem;

  --text-body: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lead: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --text-h1: clamp(2rem, 1.4rem + 2.1vw, 3.15rem);
  --text-h2: clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem);
  --text-h3: 1.125rem;

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2.25rem;
  --space-7: clamp(3rem, 5vw, 5rem);
  --space-8: clamp(4rem, 8vw, 6.5rem);

  --shadow: 0 16px 40px rgb(23 23 23 / 0.08);
  --focus: 2px solid var(--accent);
  --radius: 0.35rem;
  --radius-full: 999px;
}

[data-theme="dark"] {
  --ink: #f2efe9;
  --paper: #14120f;
  --surface: #1c1a17;
  --muted: #a8a29a;
  --accent: #d24a3e;
  --accent-strong: #e36a5f;
  --rule: #35322c;
  --link: #e36a5f;
  --on-accent: #ffffff;
  --shadow: 0 16px 40px rgb(0 0 0 / 0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #f2efe9;
    --paper: #14120f;
    --surface: #1c1a17;
    --muted: #a8a29a;
    --accent: #d24a3e;
    --accent-strong: #e36a5f;
    --rule: #35322c;
    --link: #e36a5f;
    --on-accent: #ffffff;
    --shadow: 0 16px 40px rgb(0 0 0 / 0.35);
  }
}