/* Relaton Models — card catalog identity.
   Palette: cool archival paper, petrol ink, cataloguing-red punctuation.
   Type: Bodoni Moda (display) / Public Sans (body) / Fragment Mono (codes). */

:root {
  --paper: #f5f7f8;
  --card: #ffffff;
  --ink: #16262e;
  --mist: #5c6c74;
  --line: #d9e1e5;
  --oxford: #1f4e5f;
  --oxford-deep: #16404e;
  --red: #a72e2e;
  --radius: 3px;
  --wrap: 1180px;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.65 "Public Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

code {
  font-family: "Fragment Mono", ui-monospace, monospace;
  font-size: 0.86em;
  background: rgba(31, 78, 95, 0.07);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

a { color: var(--oxford); }
a:hover { color: var(--oxford-deep); }

:focus-visible {
  outline: 2px solid var(--oxford);
  outline-offset: 2px;
  border-radius: 2px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px; top: 0;
  background: var(--ink); color: #fff;
  padding: 10px 16px;
  z-index: 10;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ISBD punctuation — the cataloguing-red mark */
.punct { color: var(--red); font-weight: 600; }

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: baseline; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-stamp {
  font-family: "Fragment Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--card);
  background: var(--oxford);
  padding: 3px 7px 2px;
  border-radius: 2px;
}
.brand-title {
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
}
.brand-sub { font-style: italic; font-weight: 500; color: var(--mist); margin-left: 0.3em; }
.nav { display: flex; gap: 22px; }
.nav a { text-decoration: none; font-weight: 600; font-size: 0.92rem; color: var(--mist); }
.nav a:hover { color: var(--oxford); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--red); }

/* ---------- hero ---------- */
.hero { padding: 72px 24px 40px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
  gap: 48px;
  align-items: start;
}
.eyebrow {
  font-family: "Fragment Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 14px;
}
.hero-copy h1 {
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
}
.hero-copy h1 em { font-style: italic; font-weight: 500; color: var(--oxford); }
.hero-lead { max-width: 56ch; color: var(--mist); font-size: 1.06rem; margin: 0; }
.hero-isbd {
  margin: 26px 0 0;
  font-family: "Fragment Mono", monospace;
  font-size: 0.85rem;
  color: var(--ink);
}
.hero-isbd .seg, .hero-isbd .punct {
  display: inline-block;
  animation: stamp-in 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
}
.hero-isbd .punct:nth-of-type(1) { animation-delay: 0.35s; }
.hero-isbd .punct:nth-of-type(2) { animation-delay: 0.55s; }
.hero-isbd .punct:nth-of-type(3) { animation-delay: 0.75s; }
.hero-isbd .seg { animation-delay: 0.15s; }

@keyframes stamp-in {
  from { opacity: 0; transform: translateY(6px) scale(0.96); }
  to { opacity: 1; transform: none; }
}

/* the drawer — statistics side card */
.drawer {
  border: 1px solid var(--line);
  border-top: 3px solid var(--oxford);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(22, 38, 46, 0.04);
}
.drawer-head {
  font-family: "Fragment Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxford);
  padding: 14px 18px 10px;
  border-bottom: 1px dashed var(--line);
}
.drawer-list { margin: 0; padding: 8px 18px 12px; }
.drawer-list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}
.drawer-list > div:last-child { border-bottom: 0; }
.drawer-list dt { color: var(--mist); font-size: 0.9rem; }
.drawer-list dd {
  margin: 0;
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--ink);
}
.drawer-foot {
  padding: 10px 18px 14px;
  font-size: 0.82rem;
  color: var(--mist);
  border-top: 1px dashed var(--line);
}

/* ---------- reading rule ---------- */
.reading-rule {
  border-left: 3px solid var(--red);
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 8px 0 40px;
}
.reading-rule strong { display: block; margin-bottom: 4px; }
.reading-rule p { margin: 0; color: var(--mist); max-width: 78ch; }

/* ---------- toolbar ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font: 600 0.85rem/1 "Public Sans", sans-serif;
  color: var(--mist);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.chip:hover { border-color: var(--oxford); color: var(--oxford); }
.chip[aria-pressed="true"] {
  background: var(--oxford);
  border-color: var(--oxford);
  color: var(--card);
}
.module-select-label { margin-left: auto; }
.module-select {
  font: 400 0.9rem/1 "Public Sans", sans-serif;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  max-width: 220px;
}
.search {
  font: 400 0.9rem/1 "Public Sans", sans-serif;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 12px;
  width: 200px;
}

/* ---------- card grid — index cards ---------- */
.catalog-section { padding-bottom: 72px; }
.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 22px;
}
.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--oxford);
  box-shadow: 0 10px 24px -14px rgba(22, 38, 46, 0.35);
}
.card-rule {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(var(--card), rgba(31, 78, 95, 0.04));
}
.card-stamp {
  font-family: "Fragment Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--oxford);
}
.card-kind {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
}
.card[data-kind="base"] .card-kind { color: var(--red); }
.card-frame {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 22px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 22px 100%,
    #fbfcfd;
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}
.card-frame img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(0.15) contrast(1.03);
}
.card-body { padding: 13px 14px 15px; }
.card-title {
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: 1.08rem;
  line-height: 1.25;
  margin: 0 0 7px;
}
.card-meta { margin: 0; font-size: 0.84rem; color: var(--mist); }
.card-call {
  margin: 9px 0 0;
  font-family: "Fragment Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.empty-state {
  display: none;
  padding: 48px 0;
  text-align: center;
  color: var(--mist);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.empty-state[data-visible] { display: block; }

/* ---------- plate page ---------- */
.plate-page { padding: 44px 24px 72px; }
.plate-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 28px;
}
.crumb { font-size: 0.85rem; color: var(--mist); margin: 0 0 16px; }
.crumb a { color: var(--mist); text-decoration: none; border-bottom: 1px solid var(--line); }
.crumb a:hover { color: var(--oxford); }
.plate-page h1 {
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  line-height: 1.12;
  margin: 0 0 12px;
}
.plate-summary { color: var(--mist); margin: 0; max-width: 68ch; }
.side-stats { display: flex; gap: 12px; flex-shrink: 0; }
.stat {
  min-width: 92px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--oxford);
  background: var(--card);
  border-radius: var(--radius);
  padding: 10px 14px;
  text-align: center;
}
.stat b {
  display: block;
  font-size: 0.68rem;
    letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
  font-weight: 700;
}
.stat span {
  font-family: "Bodoni Moda", serif;
  font-weight: 600;
  font-size: 1.5rem;
}

.diagram-stage {
  margin: 0 0 30px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.diagram-stage img { width: 100%; height: auto; display: block; }

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 1fr);
  gap: 22px;
  margin-bottom: 40px;
}
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.panel h2 {
  font-family: "Fragment Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxford);
  margin: 0 0 12px;
}
.include-list, .entry-list { margin: 0; padding: 0; list-style: none; }
.include-list li {
  font-family: "Fragment Mono", monospace;
  font-size: 0.82rem;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  word-break: break-all;
}
.include-list li:last-child { border-bottom: 0; }
.entry-list > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.entry-list > div:last-child { border-bottom: 0; }
.entry-list dt { color: var(--mist); }
.entry-list dd { margin: 0; }
.note {
  border-left: 3px solid var(--red);
  background: rgba(167, 46, 46, 0.04);
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--mist);
  margin: 16px 0 0;
}
.plate-links { margin: 14px 0 0; font-size: 0.92rem; }

.pager {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.pager a { text-decoration: none; display: flex; flex-direction: column; gap: 2px; max-width: 46%; }
.pager a span {
  font-family: "Fragment Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--red);
}
.pager a { color: var(--ink); font-weight: 600; }
.pager a:hover { color: var(--oxford); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--card); }
.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--mist);
  font-size: 0.85rem;
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .panel-grid { grid-template-columns: 1fr; }
  .plate-head { flex-direction: column; align-items: flex-start; }
  .module-select-label { margin-left: 0; }
}
@media (max-width: 560px) {
  .nav { gap: 14px; }
  .search { width: 100%; }
  .toolbar > * { width: 100%; }
  .chip-row { width: 100%; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}