/*
 * One stylesheet, no framework. The site is text and tables; a build step for
 * CSS would cost more than it saves.
 */

:root {
  --bg: #fbfbfa;
  --fg: #17181a;
  --muted: #5e636b;
  --line: #e2e3e0;
  --accent: #2f5bd0;
  --blocker: #b3261e;
  --high: #8a5300;
  --low: #5e636b;
  --ok: #1a6b3c;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15161a;
    --fg: #e8e9ea;
    --muted: #9aa0a8;
    --line: #2a2d33;
    --accent: #8db0ff;
    --blocker: #ff8a80;
    --high: #ffc46b;
    --low: #9aa0a8;
    --ok: #74d99f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    16px/1.6 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Inter,
    sans-serif;
}

.shell {
  max-width: 54rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.shell {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  flex-wrap: wrap;
}

.wordmark {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--fg);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

a {
  color: var(--accent);
}

h1 {
  font-size: 1.6rem;
  line-height: 1.25;
  margin: 2rem 0 0.5rem;
}

h2 {
  font-size: 1.1rem;
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

h3 {
  font-size: 1rem;
  margin: 1.5rem 0 0.4rem;
}

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

.lede {
  font-size: 1.05rem;
  color: var(--muted);
  margin-top: 0;
}

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

.small {
  font-size: 0.875rem;
}

/* A statement of what the page does not know. Deliberately not styled as an
   error: it is information, and hiding it would be the problem. */
.notice {
  border-left: 3px solid var(--line);
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0;
  font-size: 0.925rem;
}

.notice.warn {
  border-left-color: var(--high);
}

.notice.stop {
  border-left-color: var(--blocker);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.925rem;
  margin: 1rem 0;
}

th {
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.6rem 0.4rem 0;
  border-bottom: 1px solid var(--line);
}

td {
  padding: 0.45rem 0.6rem 0.45rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

ul.plain {
  list-style: none;
  padding: 0;
}

.sev {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.sev.blocker {
  color: var(--blocker);
}
.sev.high {
  color: var(--high);
}
.sev.low {
  color: var(--low);
}

blockquote.quote {
  margin: 0.5rem 0 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.release {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.release h3 {
  margin: 0;
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: 0.5rem 1.25rem;
  padding: 0;
  list-style: none;
}

footer.shell {
  margin-top: 4rem;
  padding: 1.5rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.stamp {
  font-family: var(--mono);
  font-size: 0.75rem;
}

.eol {
  color: var(--blocker);
}
.supported {
  color: var(--ok);
}