/* Styling on top of Web Awesome: typography, code, and the landing layout.
   Web Awesome supplies the components and the colour tokens; everything here is
   about making long-form technical copy and code samples legible. */

:root {
  --ink: light-dark(#18181b, #ecedee);
  --ink-soft: light-dark(#52525b, #a1a1aa);
  --page: light-dark(#fbfbfc, #101012);
  --panel: light-dark(#ffffff, #18181b);
  --edge: light-dark(#e4e4e7, #27272a);
  --accent: light-dark(#1d4ed8, #7ea2ff);
  --code-bg: light-dark(#f5f5f7, #1c1c20);
  --measure: 46rem;
}

html { color-scheme: light dark; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: "Fira Sans", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

code, pre, kbd, .mono { font-family: "Fira Code", ui-monospace, monospace; }

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

/* ---------- chrome ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--edge);
  background: color-mix(in oklab, var(--page) 88%, transparent);
  backdrop-filter: blur(8px);
}

.masthead .wordmark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--ink);
}
.masthead .wordmark svg { width: 1.4rem; height: 1.4rem; color: var(--accent); }
.masthead .spacer { flex: 1 1 auto; }

.guides {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.9rem;
  font-size: 0.9rem;
}
.guides a { color: var(--ink-soft); text-decoration: none; }
.guides a:hover { color: var(--accent); }
.guides a[aria-current="page"] { color: var(--accent); font-weight: 600; }

main { padding: 0 clamp(1rem, 4vw, 3rem) 5rem; }

footer {
  border-top: 1px solid var(--edge);
  padding: 2rem clamp(1rem, 4vw, 3rem);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* ---------- landing ---------- */

.hero {
  max-width: 54rem;
  margin: clamp(2.5rem, 8vw, 5.5rem) auto clamp(2rem, 5vw, 3.5rem);
}
.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2.5rem, 7vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero .lede { font-size: clamp(1.1rem, 2.4vw, 1.35rem); color: var(--ink-soft); margin: 0 0 1.75rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

.split {
  max-width: 68rem;
  margin: 0 auto clamp(2.5rem, 6vw, 4rem);
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  align-items: start;
}

section.band { max-width: 68rem; margin: 0 auto clamp(3rem, 7vw, 4.5rem); }
section.band > h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); letter-spacing: -0.01em; margin: 0 0 0.5rem; }
section.band > p.sub { color: var(--ink-soft); margin: 0 0 1.5rem; max-width: var(--measure); }

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}
.cards h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.cards p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- prose ---------- */

.prose { max-width: var(--measure); margin: clamp(2rem, 5vw, 3rem) auto 0; }
.prose h1 { font-size: clamp(2rem, 5vw, 2.75rem); letter-spacing: -0.02em; margin: 0 0 1.5rem; }
.prose h2 {
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--edge);
  font-size: 1.45rem;
  letter-spacing: -0.01em;
}
.prose h3 { margin: 2rem 0 0.5rem; font-size: 1.15rem; }
.prose h4 { margin: 1.5rem 0 0.4rem; font-size: 1rem; color: var(--ink-soft); }
.prose p, .prose li { overflow-wrap: break-word; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li { margin: 0.35rem 0; }
.prose strong { font-weight: 600; }

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
}

/* Code: the centrepiece of these docs, so it gets room and never overflows. */
.prose :not(pre) > code,
.split :not(pre) > code {
  background: var(--code-bg);
  border: 1px solid var(--edge);
  border-radius: 0.3rem;
  padding: 0.1em 0.35em;
  font-size: 0.875em;
}

pre {
  margin: 1.25rem 0;
  padding: 1rem 1.1rem;
  background: var(--code-bg);
  border: 1px solid var(--edge);
  border-radius: 0.6rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
  tab-size: 2;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* Tables carry a lot of the meaning in these guides. */
.prose table, .band table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.94rem;
  display: block;
  overflow-x: auto;
}
.prose th, .prose td, .band th, .band td {
  border-bottom: 1px solid var(--edge);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
.prose th, .band th { font-weight: 600; white-space: nowrap; }

.guide-index { list-style: none; padding: 0; }
.guide-index li { margin: 0.6rem 0; }

.pagefoot {
  max-width: var(--measure);
  margin: 3.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--edge);
  font-size: 0.92rem;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}