/* Measures Taken: editorial, calm, mobile first. No web fonts, no animation. */

:root {
  --bg: #fbfaf7;
  --text: #1d1c1a;
  --muted: #5f5b54;
  --rule: #dcd8cf;
  --accent: #23445e;
  --tint: #f1eee7;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Charter, "Bitstream Charter", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --measure: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1918;
    --text: #e8e5df;
    --muted: #a9a49b;
    --rule: #3a3835;
    --accent: #9cc0dc;
    --tint: #242220;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.6;
}

@media (min-width: 48rem) { body { font-size: 1.125rem; } }

.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 1rem; }

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

h1, h2, h3 { font-weight: 600; line-height: 1.25; letter-spacing: -0.005em; }
h1 { font-size: 1.9rem; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; margin: 3rem 0 1rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
h3 { font-size: 1.05rem; margin: 1.75rem 0 0.5rem; }
p, ul, ol, dl, blockquote { margin: 0 0 1rem; }
code { font-family: var(--mono); font-size: 0.85em; }

.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: var(--bg); padding: 0.5rem; z-index: 1; }

/* Site chrome */
.site-header { border-bottom: 1px solid var(--rule); padding: 1.25rem 0; margin-bottom: 2.5rem; font-family: var(--sans); }
.site-header .wrap { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; align-items: baseline; justify-content: space-between; }
.site-name { font-family: var(--serif); font-size: 1.2rem; font-weight: 600; color: var(--text); text-decoration: none; }
.site-header nav { display: flex; gap: 1.25rem; font-size: 0.95rem; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover { color: var(--text); text-decoration: underline; }

.site-footer { margin-top: 5rem; padding: 2rem 0 3rem; border-top: 1px solid var(--rule); font-family: var(--sans); font-size: 0.9rem; color: var(--muted); }
.site-footer a { color: var(--muted); }

/* Shared text styles */
.eyebrow { font-family: var(--sans); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.25rem; }
.lede { font-size: 1.1em; color: var(--muted); }
.fine { font-family: var(--sans); font-size: 0.85rem; color: var(--muted); }
.empty { color: var(--muted); font-style: italic; }
.notice { font-family: var(--sans); font-size: 0.9rem; border-left: 3px solid var(--rule); padding-left: 0.75rem; }
.section-meta { font-family: var(--sans); font-size: 0.9rem; color: var(--muted); }
.plain-list { padding-left: 1.2rem; }
.plain-list li { margin-bottom: 0.5rem; }
.prose > :last-child { margin-bottom: 0; }

.placeholder {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--muted);
  border: 1px dashed var(--muted);
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
}
div.placeholder { padding: 0.75rem 1rem; margin: 0 0 1rem; }

/* Level: words and position first; colour is never the only signal */
.level { font-family: var(--sans); display: inline-flex; flex-wrap: wrap; gap: 0.15rem 0.5rem; align-items: baseline; }
.level-name { font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.level-steps { letter-spacing: 0.15em; color: var(--accent); }
.level-rank { font-size: 0.85em; color: var(--muted); }

.overdue {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1.5px solid currentColor;
  padding: 0 0.35rem;
  margin-left: 0.25rem;
}
.overdue[hidden] { display: none; }

/* Watch header */
.watch-head h1 { font-size: 2rem; }
.closed-notice { font-family: var(--sans); font-size: 0.95rem; background: var(--tint); padding: 0.75rem 1rem; }
.status-grid { display: grid; grid-template-columns: 1fr; gap: 0.9rem; margin: 1.5rem 0 1rem; padding: 1.25rem 0; border-top: 2px solid var(--text); border-bottom: 1px solid var(--rule); }
.status-grid dt, .meta dt, .source dt { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.status-grid dd, .meta dd, .source dd { margin: 0.1rem 0 0; }
.status-level dd { font-size: 1.2rem; }
@media (min-width: 36rem) {
  .status-grid { grid-template-columns: 1fr 1fr; }
  .status-level, .status-action { grid-column: 1 / -1; }
}

.toc { font-family: var(--sans); font-size: 0.9rem; margin: 2rem 0; }
.toc ol { padding-left: 1.2rem; color: var(--muted); }
@media (min-width: 36rem) { .toc ol { columns: 2; column-gap: 1.5rem; } }
.toc li { margin-bottom: 0.25rem; break-inside: avoid; }

/* Indicators */
.indicators { list-style: none; padding: 0; }
.indicator { padding: 0.75rem 0; border-bottom: 1px solid var(--rule); display: grid; gap: 0.2rem; }
.indicator-state { font-family: var(--sans); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.indicator--fired .indicator-state { color: var(--text); font-weight: 700; }
.indicator--fired .indicator-state::before { content: "● "; }
.indicator:not(.indicator--fired) .indicator-state::before { content: "○ "; }

/* Claims */
.claim { padding: 1.25rem 0 1.5rem; border-bottom: 1px solid var(--rule); scroll-margin-top: 1rem; }
.claim:target, .entry:target { background: var(--tint); box-shadow: 0 0 0 0.75rem var(--tint); }
.claim-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 1rem; font-family: var(--sans); font-size: 0.85rem; margin-bottom: 0.5rem; }
.permalink { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
.claim-status { font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.claim-text { font-size: 1.1em; }
.claim--retracted .claim-text del { text-decoration-thickness: 1.5px; color: var(--muted); }
.claim--superseded .claim-text { color: var(--muted); }
.claim-note { font-family: var(--sans); font-size: 0.9rem; border-left: 3px solid var(--text); padding-left: 0.75rem; }

.source { display: grid; grid-template-columns: 1fr; gap: 0.6rem 1.25rem; font-size: 0.95rem; margin-top: 1rem; }
@media (min-width: 36rem) {
  .source { grid-template-columns: 1fr 1fr; }
  .source .wide { grid-column: 1 / -1; }
}
.source blockquote { margin: 0.25rem 0 0; padding: 0.5rem 0.9rem; border-left: 2px solid var(--rule); background: var(--tint); overflow-wrap: anywhere; }
.status-history { padding-left: 1.2rem; margin: 0.25rem 0 0; font-family: var(--sans); font-size: 0.85rem; }

/* Timeline, corrections, change log */
.entries { list-style: none; padding: 0; }
.entry { padding: 0.9rem 0; border-bottom: 1px solid var(--rule); scroll-margin-top: 1rem; }
.entry p { margin-bottom: 0.4rem; }
.entry:last-child, .claim:last-child, .indicator:last-child { border-bottom: 0; }
.entry-meta, .entry-cites { font-family: var(--sans); font-size: 0.85rem; color: var(--muted); }

/* Lists of Watches */
.watch-card { padding: 1.25rem 0; border-bottom: 1px solid var(--rule); }
.watch-card h3 { font-size: 1.3rem; margin: 0 0 0.75rem; }
.watch-card h3 a { color: var(--text); text-decoration: none; }
.watch-card h3 a:hover { text-decoration: underline; }
.meta { display: grid; gap: 0.5rem; margin: 0; }
@media (min-width: 36rem) { .meta { grid-template-columns: repeat(3, auto); justify-content: start; gap: 0.5rem 2rem; } }

/* Signup */
.signup { margin-top: 4rem; padding: 1.5rem 1.25rem; background: var(--tint); }
.signup h2 { margin-top: 0; padding-top: 0; border-top: 0; }
.signup-form label { display: block; font-family: var(--sans); font-size: 0.9rem; margin-bottom: 0.35rem; }
.signup-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.signup-row input { flex: 1 1 14rem; font: inherit; font-family: var(--sans); padding: 0.55rem 0.7rem; border: 1px solid var(--muted); background: var(--bg); color: var(--text); border-radius: 2px; }
.signup-row button { font-family: var(--sans); font-size: 0.95rem; font-weight: 600; padding: 0.55rem 1.1rem; border: 1px solid var(--text); background: var(--text); color: var(--bg); border-radius: 2px; cursor: pointer; }

/* Long citations and checksums must fit narrow screens. */
.wrap, .source > div, .status-grid > div { min-width: 0; }
.claim, .entry, .source dd, .receipt { overflow-wrap: anywhere; }
.signup-row input { min-width: 0; max-width: 100%; }

/* Watch page: quiet link to the signup form */
.follow-link { font-family: var(--sans); font-size: 0.9rem; margin: 0.5rem 0 0; }

/* Watch header: at a glance */
.glance { display: grid; grid-template-columns: 1fr; gap: 0.85rem; margin: 1.25rem 0 1rem; padding: 1.1rem 0; border-top: 2px solid var(--text); border-bottom: 1px solid var(--rule); }
.glance > div { min-width: 0; }
.glance dt { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.glance dd { margin: 0.1rem 0 0; }
.glance-question dd { font-size: 1.15rem; font-weight: 600; line-height: 1.35; }
.glance-level dd { font-size: 1.1rem; }
.glance-sub { font-family: var(--sans); font-size: 0.8rem; color: var(--muted); white-space: nowrap; }
.glance-list { margin: 0.15rem 0 0; padding-left: 1.1rem; font-size: 0.92rem; line-height: 1.45; }
.glance-list li { margin-bottom: 0.15rem; }
.glance-dates dd { font-family: var(--sans); font-size: 0.9rem; }
@media (min-width: 36rem) {
  .glance { grid-template-columns: 1fr 1fr; gap: 1rem 1.5rem; }
  .glance-question, .glance-level, .glance-action, .glance-signup { grid-column: 1 / -1; }
}

/* Claims: evidence summary and labels. Labels are words first; border style is a second cue. */
.evidence-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem 1rem; margin: 0 0 0.75rem; font-family: var(--sans); }
.evidence-summary dt { font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.evidence-summary dd { margin: 0; font-size: 1.05rem; font-weight: 600; }
@media (min-width: 36rem) { .evidence-summary { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.evidence-key { font-family: var(--sans); font-size: 0.85rem; margin: 0 0 1rem; }
.evidence-key summary { cursor: pointer; color: var(--accent); }
.evidence-key dl { margin: 0.5rem 0 0; }
.evidence-key dt { font-weight: 600; margin-top: 0.5rem; }
.evidence-key dd { margin: 0; color: var(--muted); }
.evidence-tags { list-style: none; padding: 0; margin: 0 0 0.6rem; display: flex; flex-wrap: wrap; gap: 0.35rem; font-family: var(--sans); font-size: 0.75rem; }
.tag { border: 1px solid var(--muted); border-radius: 2px; padding: 0.05rem 0.4rem; line-height: 1.5; }
.tag a { color: inherit; }
.tag--verified { border: 2px solid var(--text); font-weight: 700; }
.tag--verified::before { content: "✓ "; }
.tag--intake { border-style: dashed; }
.tag--unrecorded, .tag--unmapped { border-style: dotted; color: var(--muted); }
.tag--class-official_claim { font-style: italic; }
.tag--class-analysis { font-style: italic; }
.tag--preserved { border-width: 2px; }
.tag--unpreserved { border-style: dashed; color: var(--muted); }
.gap-note { font-family: var(--sans); font-size: 0.82rem; color: var(--muted); margin: 0 0 0.6rem; }

/* Source lineage: nested lists with connector lines; readable without JavaScript */
.lineage { margin: 1.25rem 0 2rem; }
.lineage figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 1rem; font-family: var(--sans); font-weight: 600; }
.lineage-count { font-family: var(--sans); font-size: 0.95rem; margin: 0.4rem 0 0.75rem; }
.lineage-provisional { font-weight: 400; color: var(--muted); }
.lineage-tree, .lineage-children { list-style: none; margin: 0; padding: 0; }
.lineage-children { margin-left: 0.6rem; padding-left: 0.9rem; border-left: 2px solid var(--rule); }
.lineage-node { margin: 0.5rem 0; position: relative; }
.lineage-children > .lineage-node::before { content: ""; position: absolute; left: -0.9rem; top: 1.1rem; width: 0.7rem; border-top: 2px solid var(--rule); }
.lineage-node.is-uncertain > .lineage-card { border-style: dashed; }
.lineage-children > .lineage-node.is-uncertain::before { border-top-style: dashed; }
.lineage-card { display: grid; gap: 0.1rem; padding: 0.5rem 0.7rem; border: 1px solid var(--rule); background: var(--bg); font-family: var(--sans); font-size: 0.88rem; min-width: 0; overflow-wrap: anywhere; }
.lineage-node--original > .lineage-card { border: 2px solid var(--text); }
.lineage-role { font-size: 0.7rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.lineage-node--original > .lineage-card .lineage-role { color: var(--text); font-weight: 700; }
.lineage-pub { font-weight: 600; }
.lineage-meta, .lineage-flag { font-size: 0.8rem; color: var(--muted); }
.lineage-flag::before { content: "? "; font-weight: 700; }
.lineage-note { font-size: 0.82rem; margin: 0.25rem 0 0; }
.lineage-claims { font-family: var(--sans); font-size: 0.82rem; color: var(--muted); }

/* Change log: workflow entries collapsed */
.workflow-log { font-family: var(--sans); font-size: 0.85rem; margin-top: 1rem; color: var(--muted); }
.workflow-log summary { cursor: pointer; }

.glance-signup p { margin: 0 0 0.65rem; }
.glance-signup .fine { margin: 0.65rem 0 0; }
.original-claim { font-family: var(--sans); font-size: 0.85rem; margin-bottom: 0.75rem; }
.original-claim summary { cursor: pointer; color: var(--accent); }
.source-record { padding-bottom: 0.75rem; border-bottom: 1px solid var(--rule); }
.evidence-image { max-width: 100%; height: auto; }

/* Credibility pages: promise first, optional detail underneath. */
.site-header nav { flex-wrap: wrap; gap: .65rem 1rem; align-items: center; }
.site-header nav a { white-space: nowrap; }
.site-header nav .nav-cta { background: var(--text); color: var(--bg); padding: .35rem .7rem; border-radius: 2px; }
.method-principles { display: grid; grid-template-columns: 1fr; gap: 1.1rem; margin: 1.5rem 0; }
.method-principles h2 { margin: 0 0 .35rem; padding: 0; border: 0; font-size: 1.12rem; }
.method-principles p { margin: 0; }
@media (min-width: 36rem) { .method-principles { grid-template-columns: 1fr 1fr; gap: 1.4rem; } }
.method-details { border-top: 1px solid var(--rule); padding: 1rem 0; }
.method-details summary { cursor: pointer; font-family: var(--sans); font-size: .95rem; color: var(--accent); }
.method-details h2 { margin-top: 1.5rem; }
.credibility-signup { margin-top: 2.5rem; }