/* Architecture page (architecture.html) only. site.css stays untouched.
   Tokens come from site.css :root. The diagrams draw at 1080 px or wider so no
   label falls under 14.5 px; on narrow screens the figure scrolls, the page does not. */

.arch-hero {
  padding: 6vh 0 3rem;
}

.arch-hero > * { max-width: var(--measure); }

.arch-hero h1 {
  margin: 0 0 1.2rem;
  font-family: Fraunces, serif;
  font-weight: 500;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.012em;
}

.arch-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.arch-legend li {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  max-width: 80ch;
}

.arch-legend span { color: var(--muted); }

.arch-legend strong { color: var(--ink); }

.swatch {
  display: block;
  margin-top: 0.15rem;
}

.key-pill {
  display: inline-block;
  justify-self: start;
  padding: 0.1rem 0.6rem;
  border: 2.5px solid var(--green);
  border-radius: 999px;
  color: var(--green);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.diagram {
  margin: 0 0 2rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.diagram svg {
  display: block;
  width: 100%;
  min-width: 1080px;
  height: auto;
}

.diagram figcaption {
  position: sticky;
  left: 0;
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 1rem;
  max-width: calc(100vw - 2.5rem);
}

.walk {
  max-width: 72ch;
  overflow-wrap: anywhere;
}

.walk h3 {
  margin: 2rem 0 0.6rem;
  font-size: 1.2rem;
}

.walk p { color: var(--muted); }

.walk ol,
.walk ul {
  margin: 0;
  padding-left: 1.6rem;
}

.walk li {
  margin: 0 0 0.75rem;
  padding-left: 0.3rem;
  color: var(--muted);
}

.walk li::marker {
  color: var(--ink);
  font-weight: 700;
}

.walk strong { color: var(--ink); }

.walk code,
.arch-legend code {
  font-family: Atkinson, sans-serif;
  font-size: 1em;
  font-weight: 700;
  color: var(--ink);
  background: var(--raise);
  padding: 0.02em 0.3em;
  border-radius: 3px;
}

@media (max-width: 800px) {
  .arch-legend li { grid-template-columns: minmax(0, 1fr); gap: 0.5rem; }
  .swatch { width: 48px; height: auto; }
}