/* Layout — workbench surface + container */

.skip-link {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  transform: translateY(-160%);
  transition: transform 200ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Fixed 1px dot grid at 32px — workbench surface.
   A single-dot radial gradient on a 32px tile reads as a field,
   not as a repeating pattern of tiles. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: var(--bg);
  background-image: radial-gradient(
    circle at center,
    color-mix(in srgb, var(--line) 55%, transparent) 0.6px,
    transparent 0.7px
  );
  background-size: 32px 32px;
  background-repeat: repeat;
  background-position: 0 0;
}

.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
}

main {
  flex: 1;
}

/* Empty section placeholders keep landmark structure ready */
main > section {
  min-height: 0;
  scroll-margin-top: calc(var(--header-h) + var(--space-4));
}

.site-footer {
  margin-top: auto;
  padding-block: var(--space-8);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

.site-footer__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.site-footer__links a {
  color: var(--ink-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.site-footer__links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent-dim);
}

.site-footer__note {
  margin-top: var(--space-4);
  color: var(--ink-muted);
}

.site-footer__note a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.site-footer__note a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}