/* Where the Law Runs Out — capstone site stylesheet
   Design tokens per CAPSTONE_PLAN.md §5 (locked 2026-07-09). */

:root {
  --paper: #fcfcfa;
  --ink: #1a1a1e;
  --muted: #5f6368;
  --accent: #2b4c7e;
  --rule-flock: #2b4c7e;
  --rule-sandpile: #a07840;
  --rule-earthquake: #8c3b34;
  --hairline: #d8d8d4;
  --serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --body-w: 680px;
  --wide-w: 900px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* figure.wide sizes against 100vw, which includes the scrollbar gutter on
     Windows desktop; clip the few px of bleed instead of showing an h-scrollbar */
  overflow-x: hidden;
  overflow-x: clip;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

article {
  max-width: var(--body-w);
  margin: 0 auto;
  padding: 0 20px 96px;
}

p { margin: 0 0 1.1em; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  text-decoration-color: rgba(43, 76, 126, 0.35);
}
a:hover { text-decoration-color: var(--accent); }

strong { font-weight: 600; }

/* ---------- header ---------- */

header.masthead {
  padding-top: 72px;
  margin-bottom: 8px;
}

h1 {
  font-family: var(--sans);
  font-size: 34px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.dek {
  font-size: 21px;
  line-height: 1.45;
  color: var(--muted);
  margin: 0 0 20px;
}

.byline {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 6px;
}
.byline .name { color: var(--ink); font-weight: 600; }

.links-row {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 36px;
}
.links-row a { white-space: nowrap; }
.links-row .sep { margin: 0 7px; color: var(--hairline); }

/* ---------- sections ---------- */

section { margin-top: 72px; }

h2 {
  font-family: var(--sans);
  font-size: 27px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  padding-top: 18px;
  border-top: 3px solid var(--accent);
}
section.ch-flock h2 { border-top-color: var(--rule-flock); }
section.ch-sandpile h2 { border-top-color: var(--rule-sandpile); }
section.ch-earthquake h2 { border-top-color: var(--rule-earthquake); }

h3 {
  font-family: var(--sans);
  font-size: 21px;
  line-height: 1.3;
  font-weight: 600;
  margin: 2em 0 0.6em;
}

hr {
  border: none;
  width: 48px;
  border-top: 2px solid var(--accent);
  margin: 48px auto;
}

/* ---------- stat strip ---------- */

.stat-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 40px 0 8px;
  font-family: var(--sans);
}
.stat-strip .stat {
  flex: 1 1 auto;
  padding: 2px 18px;
  border-left: 1px solid var(--hairline);
}
.stat-strip .stat:first-child { border-left: none; padding-left: 0; }
.stat-strip .num {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.stat-strip .label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- at a glance ---------- */

#glance .stat-strip { margin: 26px 0 34px; }

.glance-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.glance-list li {
  margin: 22px 0;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--accent);
}
.glance-list li.g-flock { border-left-color: var(--rule-flock); }
.glance-list li.g-sandpile { border-left-color: var(--rule-sandpile); }
.glance-list li.g-earthquake { border-left-color: var(--rule-earthquake); }
.glance-list .g-head {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 4px;
}
.glance-list .g-head a { color: var(--ink); text-decoration: none; }
.glance-list .g-head a:hover { color: var(--accent); }
.glance-list .g-tag {
  color: var(--muted);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.glance-list li p:last-child { margin: 0; font-size: 16px; line-height: 1.6; }

/* ---------- figures ---------- */

figure {
  margin: 40px 0;
}
/* all figures sit flush with the text column (no outset) */
figure.wide {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}
figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}
figure img + img { margin-top: 14px; }
/* teaser hero: sit flush with the text column, not outset like chapter figures */
figure.teaser { width: 100%; margin-left: auto; margin-right: auto; }
figure.archive img {
  width: 100%;
  max-width: var(--body-w);
  margin-left: auto;
  margin-right: auto;
}
figcaption {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
  margin-top: 12px;
  max-width: var(--body-w);
  margin-left: auto;
  margin-right: auto;
}
figcaption .figno { color: var(--ink); font-weight: 600; }
figcaption strong { color: var(--ink); font-weight: 600; }

/* ---------- corrections table ---------- */

.table-wrap { overflow-x: auto; margin: 32px 0; }

table.corrections {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
}
table.corrections th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  padding: 8px 14px 8px 0;
  border-bottom: 1px solid var(--ink);
}
table.corrections td {
  vertical-align: top;
  padding: 9px 14px 9px 0;
  border-bottom: 1px solid var(--hairline);
}
table.corrections td:last-child, table.corrections th:last-child { padding-right: 0; }
table.corrections .fid { white-space: nowrap; color: var(--muted); }

/* ---------- colophon ---------- */

.colophon {
  font-size: 15px;
  color: var(--muted);
}
.colophon p { margin-bottom: 0.9em; }
.refs {
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  padding-left: 1.2em;
  margin: 0.5em 0 0;
}
.refs li { margin-bottom: 0.35em; }

/* ---------- TOC ---------- */

nav.toc { display: none; }

@media (min-width: 1360px) {
  nav.toc {
    display: block;
    position: fixed;
    top: 96px;
    /* right edge sits ~24px to the left of the text column */
    left: max(24px, calc((100vw - var(--body-w)) / 2 - 224px));
    width: 200px;
    font-family: var(--sans);
    font-size: 13px;
    line-height: 1.5;
  }
  nav.toc .toc-title {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
  }
  nav.toc ol {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  nav.toc li { margin: 0 0 7px; }
  nav.toc a {
    color: var(--muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 10px;
    display: block;
  }
  nav.toc a:hover { color: var(--ink); }
  nav.toc a.active {
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 600;
  }
}

/* ---------- small screens ---------- */

@media (max-width: 480px) {
  body { font-size: 16px; }
  h1 { font-size: 28px; }
  .dek { font-size: 18px; }
  h2 { font-size: 23px; }
  h3 { font-size: 19px; }
  header.masthead { padding-top: 44px; }
  .stat-strip .stat { padding: 2px 12px; }
  .stat-strip .num { font-size: 21px; }
}

/* ---------- large screens ---------- */

@media (min-width: 1600px) {
  :root { --body-w: 720px; --wide-w: 1060px; }
  body { font-size: 18px; }
  h1 { font-size: 40px; }
  .dek { font-size: 22px; }
  h2 { font-size: 29px; }
  h3 { font-size: 22px; }
  .stat-strip .num { font-size: 28px; }
  figcaption { font-size: 14.5px; }
  .glance-list li p:last-child { font-size: 17px; }
}

/* ---------- print ---------- */

@media print {
  nav.toc { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  article { max-width: 100%; padding: 0; }
  figure.wide { width: 100%; margin-left: 0; }
  figure, .table-wrap { break-inside: avoid; }
  h2 { break-after: avoid; }
  a { color: #000; text-decoration: none; }
  .links-row a { text-decoration: underline; }
}