:root {
  --color-parchment: #f5f0e8;
  --color-parchment-dark: #ede6d6;
  --color-parchment-aged: #d9cfba;
  --color-ink: #1a1612;
  --color-ink-faded: #4a3f35;
  --color-ink-ghost: #8c7b6e;
  --color-accent-red: #8b2e2e;
  --color-accent-ochre: #b5813a;
  --color-accent-green: #3a5e3a;
  --color-corrupted: #2a1a2e;
  --color-corrupted-text: #c084fc;
  --font-display: "Playfair Display", "Libre Baskerville", Georgia, serif;
  --font-body: "EB Garamond", "Crimson Text", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;
  --font-ui: "Inter", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background:
    radial-gradient(circle at 20% 20%, rgba(139, 46, 46, 0.035), transparent 24rem),
    radial-gradient(circle at 80% 0%, rgba(181, 129, 58, 0.04), transparent 22rem),
    linear-gradient(rgba(26, 22, 18, 0.025) 1px, transparent 1px),
    var(--color-parchment);
  background-size: auto, auto, 9px 9px, auto;
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.7;
}

a {
  color: inherit;
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-ochre);
  z-index: 10;
}

/* ---- Archive recovery loader ---- */
.archive-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 38%, rgba(181, 129, 58, 0.07), transparent 58%),
    linear-gradient(rgba(26, 22, 18, 0.03) 1px, transparent 1px),
    var(--color-parchment);
  background-size: auto, 9px 9px, auto;
  animation: loaderExit 700ms ease 1650ms forwards;
}

.intro-seen .archive-loader {
  display: none;
}

@keyframes loaderExit {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

.loader-plate {
  position: relative;
  width: min(420px, 82vw);
  padding: 52px 40px 40px;
  text-align: center;
  border: 1px solid var(--color-parchment-aged);
  background: rgba(237, 230, 214, 0.55);
  overflow: hidden;
  animation: plateIn 600ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes plateIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.loader-corner {
  position: absolute;
  width: 13px;
  height: 13px;
  border: 2px solid var(--color-accent-red);
}
.loader-corner.tl { top: 9px; left: 9px; border-right: 0; border-bottom: 0; }
.loader-corner.tr { top: 9px; right: 9px; border-left: 0; border-bottom: 0; }
.loader-corner.bl { bottom: 9px; left: 9px; border-right: 0; border-top: 0; }
.loader-corner.br { bottom: 9px; right: 9px; border-left: 0; border-top: 0; }

.loader-scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent-ochre), transparent);
  box-shadow: 0 0 14px 2px rgba(181, 129, 58, 0.45);
  animation: scanSweep 1500ms cubic-bezier(0.5, 0, 0.5, 1) both;
}

@keyframes scanSweep {
  0% { top: 0; opacity: 0; }
  8% { opacity: 0.95; }
  90% { opacity: 0.95; }
  100% { top: 100%; opacity: 0; }
}

.loader-mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7vw, 44px);
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--color-ink);
  animation: markResolve 1300ms ease both;
}

@keyframes markResolve {
  0% {
    opacity: 0;
    letter-spacing: 0.5em;
    filter: blur(7px);
    color: var(--color-corrupted-text);
  }
  55% {
    opacity: 1;
    filter: blur(0);
    color: var(--color-accent-red);
  }
  100% {
    opacity: 1;
    letter-spacing: 0.12em;
    color: var(--color-ink);
  }
}

.loader-status {
  margin-top: 15px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-ink-ghost);
  animation: statusIn 600ms ease 450ms both;
}

@keyframes statusIn {
  from { opacity: 0; }
  to { opacity: 0.85; }
}

.loader-bar {
  width: 68%;
  height: 2px;
  margin: 20px auto 0;
  background: var(--color-parchment-aged);
  overflow: hidden;
}

.loader-bar span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--color-accent-red);
  animation: barFill 1520ms cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes barFill {
  from { width: 0; }
  to { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .archive-loader {
    animation: loaderExit 200ms ease 250ms forwards;
  }
  .loader-plate,
  .loader-mark,
  .loader-scan,
  .loader-bar span {
    animation: none;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 18px 48px;
  border-bottom: 1px solid var(--color-parchment-aged);
  background: rgba(245, 240, 232, 0.94);
  backdrop-filter: blur(8px);
  animation: headerReveal 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.header-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav a {
  color: var(--color-ink-ghost);
  border-bottom: 1px solid transparent;
  text-decoration: none;
  transition: color 150ms ease, border-color 150ms ease;
}

.nav a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent-ochre);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  padding: 96px 48px;
  border-bottom: 3px double var(--color-parchment-aged);
}

.hero-inner {
  max-width: 1100px;
  text-align: center;
}

.institution,
.eyebrow,
.classification,
.era,
.notice,
.site-footer,
.metadata-label dt,
.condition,
.classification-badge,
.filter-button,
.back-link,
.text-link {
  font-family: var(--font-ui);
}

.institution,
.eyebrow {
  margin: 0 0 16px;
  color: var(--color-accent-red);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(64px, 14vw, 148px);
  font-weight: 900;
  line-height: 0.9;
  animation: stamp 650ms cubic-bezier(0.16, 1, 0.3, 1);
}

.subtitle {
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--color-ink-faded);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
}

.notice {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 12px 18px;
  color: var(--color-accent-red);
  border: 1px solid var(--color-accent-red);
  background: var(--color-parchment-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section,
.page-header,
.artifact-page {
  width: min(1200px, calc(100% - 96px));
  margin: 0 auto;
}

.section {
  padding: 80px 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.15fr);
  gap: 64px;
  border-bottom: 1px solid var(--color-parchment-aged);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(36px, 6vw, 62px);
}

h3 {
  margin: 18px 0 10px;
  font-size: 29px;
}

.prose p {
  margin-top: 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--color-parchment-aged);
  padding-bottom: 18px;
}

.catalogue-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.artifact-card {
  min-height: 328px;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--color-parchment-aged);
  background: var(--color-parchment-dark);
  transition: background 200ms ease, border-color 200ms ease;
}

.artifact-card:hover {
  border-color: var(--color-ink-faded);
  background: var(--color-parchment);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.artifact-id {
  padding: 0;
  color: var(--color-accent-red);
  border: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-align: left;
  cursor: pointer;
}

.artifact-card h3 a {
  text-decoration: none;
}

.classification,
.era {
  margin: 0;
  color: var(--color-ink-ghost);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.45;
  text-transform: uppercase;
}

.artifact-card p:last-of-type {
  margin-bottom: 24px;
}

.text-link,
.back-link {
  margin-top: auto;
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.condition,
.classification-badge {
  display: inline-block;
  padding: 4px 7px;
  border: 1px solid currentColor;
  color: var(--color-ink-faded);
  font-size: 10px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.condition-well-documented {
  color: var(--color-accent-green);
  background: rgba(58, 94, 58, 0.08);
}

.condition-fragmentary {
  color: var(--color-accent-ochre);
  border-style: dashed;
}

.condition-corrupted {
  color: var(--color-corrupted-text);
  background: var(--color-corrupted);
  animation: pulse 3s infinite;
}

.page-header {
  padding: 96px 0 48px;
  border-bottom: 3px double var(--color-parchment-aged);
}

.page-header h1,
.artifact-header h1 {
  max-width: 950px;
  margin: 0;
  font-size: clamp(48px, 8vw, 96px);
}

.page-header p:last-child {
  max-width: 760px;
  color: var(--color-ink-faded);
  font-size: 24px;
  line-height: 1.45;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.filter-button {
  padding: 9px 12px;
  border: 1px solid var(--color-parchment-aged);
  background: transparent;
  color: var(--color-ink-faded);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.filter-button.active,
.filter-button:hover {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-parchment);
}

.artifact-page {
  max-width: 840px;
  padding: 72px 0;
}

.artifact-header {
  border-bottom: 3px double var(--color-parchment-aged);
  padding-bottom: 40px;
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
}

.metadata-label {
  padding: 18px;
  margin-bottom: 34px;
  border: 1px solid var(--color-parchment-aged);
  background: var(--color-parchment-dark);
}

.metadata-label dl {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
}

.metadata-label div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
}

.metadata-label dt {
  color: var(--color-ink-ghost);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metadata-label dd {
  margin: 0;
}

.artefact-visual {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  overflow: hidden;
  margin: 40px 0 0;
  border: 1px solid var(--color-parchment-aged);
  background:
    linear-gradient(90deg, rgba(26, 22, 18, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(26, 22, 18, 0.06) 1px, transparent 1px),
    var(--color-parchment-dark);
  background-size: 32px 32px;
}

.artefact-visual::before {
  content: "Property of the Netoric Studies Dept.";
  position: absolute;
  inset: 42% auto auto 50%;
  width: 100%;
  color: rgba(139, 46, 46, 0.18);
  font-family: var(--font-ui);
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -50%) rotate(-13deg);
}

.plate-mark {
  position: absolute;
  top: 18px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.sigil {
  width: 160px;
  height: 160px;
  display: grid;
  place-items: center;
  border: 2px solid var(--color-accent-red);
  color: var(--color-accent-red);
  font-family: var(--font-display);
  font-size: 96px;
  font-weight: 900;
  background: rgba(245, 240, 232, 0.62);
}

.artefact-visual figcaption {
  position: absolute;
  right: 18px;
  bottom: 14px;
  left: 18px;
  color: var(--color-ink-ghost);
  font-size: 14px;
  font-style: italic;
  text-align: right;
}

.visual-corrupted {
  background:
    repeating-linear-gradient(0deg, rgba(192, 132, 252, 0.08), rgba(192, 132, 252, 0.08) 1px, transparent 1px, transparent 4px),
    var(--color-corrupted);
}

.visual-corrupted .sigil,
.visual-corrupted figcaption,
.visual-corrupted .plate-mark {
  color: var(--color-corrupted-text);
  border-color: var(--color-corrupted-text);
}

.entry-section {
  padding: 42px 0 0;
}

.entry-section h2 {
  margin-bottom: 20px;
  font-size: 36px;
}

.entry-section p {
  margin: 0 0 20px;
}

.corrupt-token {
  color: var(--color-accent-red);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.references {
  border-top: 1px solid var(--color-parchment-aged);
  margin-top: 18px;
}

.references ol {
  padding-left: 24px;
  font-size: 16px;
}

.related-links {
  display: grid;
  gap: 10px;
}

.related-links a {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--color-parchment-aged);
  text-decoration: none;
}

.related-links span {
  color: var(--color-accent-red);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  padding: 32px 48px;
  border-top: 1px solid var(--color-parchment-aged);
  color: var(--color-ink-ghost);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.is-hidden {
  display: none;
}

.copy-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  padding: 10px 12px;
  border: 1px solid var(--color-ink);
  background: var(--color-parchment);
  font-family: var(--font-mono);
  font-size: 12px;
}

@keyframes stamp {
  from {
    opacity: 0;
    transform: scale(1.04);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes headerReveal {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.64;
  }
}

@media (max-width: 960px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 24px;
  }

  .nav {
    justify-content: flex-start;
  }

  .section,
  .page-header,
  .artifact-page {
    width: min(100% - 40px, 1200px);
  }

  .two-column {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .catalogue-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 20px;
  }

  .header-bar {
    justify-content: space-between;
    width: 100%;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 38px;
    padding: 9px;
    background: none;
    border: 1px solid var(--color-parchment-aged);
    border-radius: 4px;
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-ink);
    transition: transform 200ms ease, opacity 150ms ease;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin-top: 6px;
  }

  .site-header.nav-open .nav {
    display: flex;
  }

  .nav a {
    padding: 13px 2px;
    border-bottom: 1px solid var(--color-parchment-aged);
    font-size: 13px;
  }

  .nav a:hover {
    border-bottom-color: var(--color-parchment-aged);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 18px;
  }

  .hero {
    min-height: 72vh;
    padding: 72px 20px;
  }

  .notice {
    width: calc(100% - 40px);
  }

  .catalogue-grid {
    grid-template-columns: 1fr;
  }

  .metadata-label div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .artefact-visual {
    min-height: 280px;
  }

  .site-footer {
    padding: 28px 20px;
  }
}

@media print {
  .site-header,
  .scroll-progress,
  .filters {
    display: none;
  }

  body {
    background: var(--color-parchment);
  }
}