/* ============================================================
   Tokens
   ============================================================ */
:root {
  --ink: #14171b;
  --ink-raised: #1b1f26;
  --paper: #ece7da;
  --muted: #938c7c;
  --rule: #2a2e35;
  --brass: #c2924f;
  --brass-dim: #8a6c42;
  --zanzibar: #7d6ca8;
  --editing: #a85d45;

  --serif: "Fraunces", ui-serif, Georgia, serif;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

/* ---------- Site navigation ---------- */
.navbar {
  border-bottom: 1px solid var(--rule);
  background: var(--ink);
}
.nav-container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-logo { font-weight: 600; text-decoration: none; color: var(--paper); white-space: nowrap; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a { color: var(--paper); text-decoration: none; }
.nav-links a:hover, .nav-links a:focus { color: var(--brass); }
.nav-toggle { display: none; border: 0; background: transparent; padding: .25rem; cursor: pointer; }
.nav-toggle .bar { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--paper); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brass);
  color: var(--ink);
  padding: 10px 16px;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- Masthead ---------- */
.masthead { border-bottom: 1px solid var(--rule); padding: 64px 24px 40px; }
.masthead-inner { max-width: var(--max); margin: 0 auto; }
.kicker { font-family: var(--sans); font-size: 13px; letter-spacing: 0.02em; color: var(--brass); margin: 0 0 14px; }
.masthead h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(42px, 7vw, 76px); line-height: 1.02; margin: 0 0 20px; letter-spacing: -0.01em; }
.tagline { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 19px; line-height: 1.5; color: var(--paper); max-width: 46ch; margin: 0 0 18px; }
.stats { font-size: 13px; color: var(--muted); margin: 0; font-variant-numeric: tabular-nums; }

/* ---------- Layout ---------- */
.layout { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 250px 1fr; gap: 48px; padding: 40px 24px 80px; align-items: start; }

/* ---------- Sidebar / TOC ---------- */
.toc { position: sticky; top: 24px; }
.search-box input { width: 100%; background: var(--ink-raised); border: 1px solid var(--rule); color: var(--paper); padding: 10px 12px; font-family: var(--sans); font-size: 14px; border-radius: 3px; }
.search-box input::placeholder { color: var(--muted); }
.search-box input:focus { border-color: var(--brass); }
.status-filter { display: flex; gap: 6px; margin-top: 12px; }
.status-btn { background: transparent; border: 1px solid var(--rule); color: var(--muted); padding: 6px 10px; font-size: 12.5px; border-radius: 3px; }
.status-btn.is-active { border-color: var(--brass); color: var(--brass); }
#toc-list { list-style: none; margin: 20px 0 0; padding: 12px 0 0; border-top: 1px solid var(--rule); }
#toc-list li a { display: flex; justify-content: space-between; gap: 8px; text-decoration: none; color: var(--muted); font-size: 13.5px; padding: 7px 2px; border-left: 2px solid transparent; padding-left: 10px; transition: color 0.15s, border-color 0.15s; }
#toc-list li a .n { font-variant-numeric: tabular-nums; color: var(--muted); opacity: 0.7; }
#toc-list li a:hover { color: var(--paper); }
#toc-list li a.is-active { color: var(--paper); border-left-color: var(--brass); }
.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; flex: none; }
.dot-default { background: var(--brass); }
.dot-zanzibar { background: var(--zanzibar); }

/* ---------- Main catalogue ---------- */
main { min-width: 0; }
.section { margin-bottom: 44px; scroll-margin-top: 20px; }
.section-head { display: flex; align-items: baseline; gap: 12px; border-bottom: 1px solid var(--rule); padding-bottom: 10px; margin-bottom: 4px; }
.section-head h2 { font-family: var(--serif); font-weight: 500; font-size: 24px; margin: 0; letter-spacing: -0.01em; }
.section-count { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.pen-tag { font-size: 12px; color: var(--muted); margin-left: auto; font-style: italic; font-family: var(--serif); }
.row { display: grid; grid-template-columns: 52px 1fr auto; align-items: baseline; gap: 16px; padding: 11px 2px; border-bottom: 1px solid var(--rule); text-decoration: none; color: var(--paper); }
a.row { cursor: pointer; }
a.row:hover .row-title { color: var(--brass); }
a.row:hover .row-arrow { opacity: 1; transform: translateX(2px); }
div.row .row-title { color: var(--paper); }
.row-code { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.row-main { min-width: 0; }
.row-title { font-family: var(--serif); font-size: 16.5px; transition: color 0.15s; }
.row-meta { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.row-meta .sep { margin: 0 6px; opacity: 0.5; }
.row-end { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.tag { padding: 2px 8px; border-radius: 20px; border: 1px solid currentColor; font-size: 11px; white-space: nowrap; }
.tag-ready { color: var(--brass); }
.tag-editing { color: var(--editing); }
.row-arrow { color: var(--brass); opacity: 0; transition: opacity 0.15s, transform 0.15s; }
.row-dash { color: var(--rule); }
.empty-state { color: var(--muted); padding: 40px 2px; font-family: var(--serif); font-style: italic; }
.hidden-row { display: none !important; }
.hidden-section { display: none !important; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding: 28px 24px 60px; }
.site-footer p { max-width: var(--max); margin: 0 auto; color: var(--muted); font-size: 13px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; gap: 24px; }
  .toc { position: static; }
  .toc-inner { display: flex; flex-direction: column; }
  #toc-list { display: flex; flex-wrap: wrap; gap: 4px 14px; border-top: 1px solid var(--rule); }
  #toc-list li a { border-left: none; padding-left: 0; border-bottom: 2px solid transparent; }
  #toc-list li a.is-active { border-left: none; border-bottom-color: var(--brass); }
  .row { grid-template-columns: 40px 1fr; }
  .row-end { grid-column: 2 / -1; margin-top: 4px; }
}

@media (max-width: 700px) {
  .nav-container { flex-wrap: wrap; }
  .nav-toggle { display: block; }
  .nav-links { display: none; width: 100%; flex-direction: column; gap: .75rem; padding-top: .75rem; }
  .nav-links.is-open { display: flex; }
}

@media (max-width: 520px) {
  .masthead { padding: 44px 18px 28px; }
  .layout { padding: 28px 18px 60px; }
}