@layer base {
  html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--space-s));
  }

  body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
  }

  h1,
  h2,
  h3,
  h4 {
    line-height: var(--leading-tight);
    font-weight: 700;
  }

  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
  h4 { font-size: var(--text-lg); }

  a {
    color: var(--color-accent);
    text-underline-offset: 0.2em;
  }

  a:hover {
    text-decoration-thickness: 2px;
  }

  :focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 3px;
  }

  main:focus {
    outline: none;
  }

  code,
  kbd,
  pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
  }

  hr {
    border: 0;
    border-top: 1px solid var(--color-border);
  }

  ::selection {
    background-color: var(--color-accent);
    color: var(--color-accent-contrast);
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }
}