/* Trained On. A public record: ink on paper, colour only where it carries meaning. */

:root {
  --paper: #fbfaf7;
  --paper-2: #f3f1ec;
  --ink: #1b1a17;
  --ink-2: #57544d;
  --ink-3: #8a867c;
  --rule: #e2ded5;
  --accent: #1f4e79;
  --trains: #9a3412;
  --trains-bg: #fdf0e8;
  --safe: #166534;
  --safe-bg: #ecf6ee;
  --unclear-bg: #efeee9;
  --ins: #d9f0dc;
  --ins-ink: #14532d;
  --del: #fbe0dc;
  --del-ink: #7f1d1d;
  --draft: #a16207;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Charter, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --measure: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #151513;
    --paper-2: #1d1d1a;
    --ink: #ecebe6;
    --ink-2: #b5b2a9;
    --ink-3: #85827a;
    --rule: #2e2d29;
    --accent: #8ab4e0;
    --trains: #f0a37a;
    --trains-bg: #33211a;
    --safe: #86d19a;
    --safe-bg: #17291c;
    --unclear-bg: #26251f;
    --ins: #1b3a22;
    --ins-ink: #b9e8c3;
    --del: #43201c;
    --del-ink: #f6c3bb;
    --draft: #e0b45a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 var(--sans);
}
a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: 68rem; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: var(--measure); }

/* header and footer */
.site-head { border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 1.5rem; padding-block: 1rem; }
.brand { font: 600 1.15rem/1 var(--serif); color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
.brand small { font: 400 0.8rem var(--sans); color: var(--ink-3); margin-left: 0.5rem; }
.site-nav { display: flex; gap: 1.25rem; font-size: 0.93rem; }
.site-nav a { color: var(--ink-2); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--ink); text-decoration: underline; }
.site-foot { border-top: 1px solid var(--rule); margin-top: 4rem; padding-block: 2rem; color: var(--ink-3); font-size: 0.85rem; }
.site-foot p { max-width: var(--measure); margin: 0 0 0.5rem; }

main { padding-block: 2rem; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; letter-spacing: -0.005em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin: 0 0 0.75rem; }
h2 { font-size: 1.35rem; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.08rem; margin: 1.5rem 0 0.5rem; }
.lede { font-size: 1.1rem; color: var(--ink-2); max-width: var(--measure); margin: 0 0 1.5rem; }
.muted { color: var(--ink-3); }
.small { font-size: 0.85rem; }
.date { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* banners */
.banner { border: 1px solid var(--rule); background: var(--paper-2); padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1.5rem; font-size: 0.92rem; }
.banner--warn { border-color: var(--draft); }
.banner--preview { border-color: var(--draft); color: var(--draft); }
.draft-marker { display: inline-block; font: 600 0.68rem/1 var(--sans); text-transform: uppercase; letter-spacing: 0.06em; color: var(--draft); border: 1px solid var(--draft); border-radius: 3px; padding: 0.2em 0.35em; margin-left: 0.4rem; vertical-align: 0.15em; }

/* answer and kind badges */
.answer { display: inline-block; font-weight: 600; font-size: 0.9rem; padding: 0.15em 0.5em; border-radius: 4px; }
.answer--trains { color: var(--trains); background: var(--trains-bg); }
.answer--safe { color: var(--safe); background: var(--safe-bg); }
.answer--unclear { color: var(--ink-2); background: var(--unclear-bg); }
.kind { font: 600 0.72rem/1 var(--sans); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); }
.kind--position { color: var(--trains); }

/* the registry */
.registry { width: 100%; border-collapse: collapse; }
.registry th { text-align: left; font: 600 0.75rem var(--sans); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); padding: 0 0.75rem 0.5rem 0; border-bottom: 1px solid var(--ink); }
.registry td { vertical-align: top; padding: 1rem 0.75rem 1rem 0; border-bottom: 1px solid var(--rule); }
.registry .vendor-cell a { font-weight: 600; color: var(--ink); text-decoration: none; }
.registry .vendor-cell a:hover { text-decoration: underline; }
.registry .plan { display: block; color: var(--ink-2); font-size: 0.9rem; }
.registry .gap { display: block; font-size: 0.78rem; color: var(--ink-3); }
.registry .opt-out { display: block; margin-top: 0.35rem; font-size: 0.85rem; color: var(--ink-2); }
.registry .stale { color: var(--draft); }
.quote { font: 1rem/1.5 var(--serif); margin: 0; }
.quote .q::before { content: "\201C"; }
.quote .q::after { content: "\201D"; }
.quote cite { display: block; font: 0.8rem var(--sans); color: var(--ink-3); margin-top: 0.35rem; font-style: normal; }

@media (max-width: 760px) {
  .registry thead { display: none; }
  .registry tr { display: block; border-bottom: 1px solid var(--rule); padding: 1rem 0; }
  .registry td { display: block; border: 0; padding: 0.2rem 0; }
  .registry td[data-label]::before { content: attr(data-label) ": "; color: var(--ink-3); font-size: 0.8rem; }
  .registry td.quote-cell { margin: 0.5rem 0; }
}

/* change lists */
.changes { list-style: none; margin: 0; padding: 0; }
.changes li { display: grid; grid-template-columns: 7.5rem 1fr; gap: 0 1rem; padding: 0.9rem 0; border-bottom: 1px solid var(--rule); }
.changes .when { color: var(--ink-3); font-size: 0.9rem; padding-top: 0.1rem; }
.changes .what a { color: var(--ink); text-decoration: none; }
.changes .what a:hover { text-decoration: underline; }
.changes .who { display: block; font-size: 0.85rem; color: var(--ink-3); margin-top: 0.15rem; }
@media (max-width: 560px) { .changes li { grid-template-columns: 1fr; } }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; font-size: 0.9rem; margin-bottom: 1rem; }

/* change page */
.event-head { max-width: var(--measure); }
.event-head .headline { font: 1.25rem/1.45 var(--serif); margin: 0.5rem 0 1rem; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.25rem; font-size: 0.92rem; margin: 1.25rem 0; max-width: var(--measure); }
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; }
.diff { font: 1.02rem/1.7 var(--serif); white-space: pre-wrap; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 6px; padding: 1rem 1.25rem; max-width: var(--measure); overflow-wrap: anywhere; }
.diff ins { background: var(--ins); color: var(--ins-ink); text-decoration: none; border-radius: 2px; }
.diff del { background: var(--del); color: var(--del-ink); border-radius: 2px; }
.legend { font-size: 0.82rem; color: var(--ink-3); margin: 0.5rem 0 0; }
.legend ins { background: var(--ins); color: var(--ins-ink); text-decoration: none; padding: 0 0.2em; }
.legend del { background: var(--del); color: var(--del-ink); padding: 0 0.2em; }
.clause { font: 1rem/1.6 var(--serif); max-width: var(--measure); border-left: 3px solid var(--rule); padding-left: 1rem; }
.clause p { margin: 0 0 0.75rem; }
.two-up { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 860px) { .two-up { grid-template-columns: 1fr; } }
.note { max-width: var(--measure); font-size: 0.92rem; border-left: 3px solid var(--draft); padding: 0.25rem 0 0.25rem 1rem; color: var(--ink-2); }

/* vendor page */
.tiers { display: grid; grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.tier { border: 1px solid var(--rule); border-radius: 8px; padding: 1rem 1.1rem; background: var(--paper); }
.tier h3 { margin: 0 0 0.6rem; font-size: 1rem; font-family: var(--sans); }
.tier .quote { margin-top: 0.75rem; font-size: 0.95rem; }
.tier .meta { margin-top: 0.75rem; font-size: 0.8rem; color: var(--ink-3); }
details.version { border-bottom: 1px solid var(--rule); padding: 0.6rem 0; max-width: var(--measure); }
details.version summary { cursor: pointer; font-size: 0.93rem; }
details.version[open] summary { margin-bottom: 0.75rem; }
.lost { color: var(--draft); }

/* prose pages */
.prose { max-width: var(--measure); }
.prose p, .prose li { margin: 0 0 0.9rem; }
.prose ol, .prose ul { padding-left: 1.25rem; }
.prose code, pre { font: 0.85rem/1.5 var(--mono); }
pre { background: var(--paper-2); border: 1px solid var(--rule); border-radius: 6px; padding: 0.9rem 1rem; max-width: 100%; white-space: pre-wrap; overflow-wrap: anywhere; }
pre del { background: var(--del); color: var(--del-ink); }
pre ins { background: var(--ins); color: var(--ins-ink); text-decoration: none; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr)); gap: 1rem; margin: 1.5rem 0; max-width: var(--measure); }
.stat { border-top: 2px solid var(--ink); padding-top: 0.5rem; }
.stat b { display: block; font: 600 1.6rem/1.1 var(--serif); font-variant-numeric: tabular-nums; }
.stat span { font-size: 0.82rem; color: var(--ink-2); }
table.plain { border-collapse: collapse; font-size: 0.88rem; width: 100%; max-width: var(--measure); }
table.plain th, table.plain td { text-align: left; padding: 0.4rem 0.75rem 0.4rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.plain td.num, table.plain th.num { text-align: right; font-variant-numeric: tabular-nums; }
.scroll-x { overflow-x: auto; }

/* admin */
.admin-bar { background: var(--ink); color: var(--paper); font-size: 0.85rem; }
.admin-bar .wrap { display: flex; flex-wrap: wrap; gap: 1rem; padding-block: 0.5rem; align-items: center; }
.admin-bar a, .admin-bar button { color: var(--paper); background: none; border: 0; font: inherit; cursor: pointer; padding: 0; text-decoration: underline; }
.flash { padding: 0.6rem 1rem; border-radius: 6px; background: var(--safe-bg); color: var(--safe); margin-bottom: 1rem; }
.flash--alert { background: var(--trains-bg); color: var(--trains); }
.queue td, .queue th { font-size: 0.88rem; }
.review { display: grid; gap: 0.75rem; max-width: var(--measure); margin-top: 1.5rem; }
.review label { font-size: 0.82rem; color: var(--ink-2); display: block; margin-bottom: 0.2rem; }
.review select, .review textarea, .review input[type=text], .review input[type=password] { width: 100%; font: inherit; padding: 0.5rem; border: 1px solid var(--rule); border-radius: 4px; background: var(--paper); color: var(--ink); }
.review .buttons { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.btn { font: 600 0.9rem var(--sans); border: 1px solid var(--ink); background: var(--paper); color: var(--ink); padding: 0.5rem 0.9rem; border-radius: 5px; cursor: pointer; }
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--small { padding: 0.25rem 0.5rem; font-size: 0.8rem; }
.errors { color: var(--trains); }
.hit { font: 0.9rem/1.5 var(--serif); border-left: 3px solid var(--draft); padding-left: 0.75rem; margin: 0.5rem 0; }