/* =========================================================================
   Ancient Medical KnowBridge — design system
   A parchment / burgundy / gold theme evoking Greek & Arabic manuscripts.
   ========================================================================= */

:root {
  /* Surfaces */
  --parchment:      #f6efdd;
  --parchment-2:    #f1e6cc;
  --parchment-deep: #ece0c2;
  --card-bg:        #fbf7ec;
  --card-bg-2:      #f8f1df;

  /* Ink */
  --ink:        #2c2a33;
  --ink-soft:   #514b44;
  --ink-faint:  #8a7f6c;

  /* Accents */
  --burgundy:       #7a1d2b;
  --burgundy-deep:  #5c1622;
  --burgundy-ink:   #f6e8d4;
  --gold:           #ad8230;
  --gold-soft:      #c9a85f;
  --gold-bright:    #d8bd7e;

  /* Lines & rules */
  --line:      rgba(173, 130, 48, 0.34);
  --line-soft: rgba(173, 130, 48, 0.18);
  --rule:      #d8c6a0;

  /* Type */
  --display: "Cormorant Garamond", "EB Garamond", Georgia, "Times New Roman", serif;
  --body:    "EB Garamond", Georgia, "Palatino Linotype", "Book Antiqua", serif;
  --greek:   "EB Garamond", "Gentium Book Plus", Georgia, serif;
  --arabic:  "Amiri", "Scheherazade New", "Times New Roman", serif;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(60, 40, 15, 0.10);
  --shadow:    0 6px 22px rgba(74, 45, 12, 0.13);
  --shadow-lg: 0 18px 48px rgba(74, 45, 12, 0.20);
  --radius:    10px;
  --radius-sm: 7px;

  --maxw: 1640px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink);
  background-color: var(--parchment);
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(255,251,238,0.9), rgba(255,251,238,0) 55%),
    radial-gradient(90% 60% at 100% 0%, rgba(214,189,126,0.12), rgba(214,189,126,0) 60%),
    radial-gradient(90% 60% at 0% 100%, rgba(122,29,43,0.05), rgba(122,29,43,0) 55%),
    url("assets/parchment.svg");
  background-attachment: fixed, fixed, fixed, fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--burgundy); text-decoration: none; }
a:hover { color: var(--burgundy-deep); text-decoration: underline; text-underline-offset: 2px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* =====================  Top bar / nav  ================================ */
.topbar {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(#fbf6e8, #f6efdd);
  position: sticky; top: 0; z-index: 40;
  box-shadow: 0 1px 0 rgba(255,255,255,0.6), var(--shadow-sm);
}
.topbar .wrap {
  display: flex; align-items: center; gap: 26px;
  height: 74px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand .medallion { width: 42px; height: 42px; flex: none; color: var(--gold); }
.brand .name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.3px;
  color: var(--ink);
  line-height: 1;
}
.nav { display: flex; align-items: center; gap: 30px; margin-left: 22px; }
.nav a {
  font-family: var(--display);
  font-size: 21px;
  color: var(--ink);
  position: relative;
  padding-bottom: 4px;
}
.nav a:hover { color: var(--burgundy); text-decoration: none; }
.nav a.active { color: var(--burgundy); }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.nav .has-menu { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.nav .caret { font-size: 13px; color: var(--gold); }

/* dropdown */
.menu { position: relative; }
.menu > .dropdown {
  position: absolute; top: 130%; left: -14px; min-width: 240px;
  background: var(--card-bg); border: 1px solid var(--line);
  border-radius: var(--radius-sm); box-shadow: var(--shadow);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all .16s ease; z-index: 50;
}
.menu:hover > .dropdown, .menu:focus-within > .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 8px 12px; border-radius: 6px; font-size: 18px;
  font-family: var(--body); color: var(--ink);
}
.dropdown a:hover { background: var(--parchment-2); color: var(--burgundy); text-decoration: none; }
.dropdown a small { display: block; color: var(--ink-faint); font-size: 13.5px; }

.topbar .spacer { flex: 1; }
.about-link { display: inline-flex; align-items: center; gap: 9px; color: var(--ink-soft); font-family: var(--display); font-size: 20px; }
.about-link svg { width: 22px; height: 22px; color: var(--gold); }
.about-link:hover { color: var(--burgundy); text-decoration: none; }
.topbar-btn {
  display: inline-flex; align-items: center; gap: 8px; margin-left: 20px;
  background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep));
  color: #fdf3e2; border: 1px solid var(--burgundy-deep); border-radius: 8px;
  padding: 9px 16px; font-family: var(--display); font-size: 18px; font-weight: 600;
  white-space: nowrap; box-shadow: var(--shadow-sm);
}
.topbar-btn:hover { color: #fff; text-decoration: none; filter: brightness(1.08); }
.topbar-btn svg { width: 17px; height: 17px; color: var(--gold-bright); }

/* =====================  Hero  ======================================== */
.hero { padding: 30px 0 8px; position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 230px 1fr 230px;
  gap: 26px;
  align-items: start;
}
.hero-center { text-align: center; }
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(44px, 6vw, 88px);
  line-height: 1.02;
  margin: 4px 0 6px;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.hero .subtitle {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(18px, 2.1vw, 27px);
  color: var(--ink-soft);
  margin: 0 0 16px;
}
.hero .lede { font-size: 19px; color: var(--ink-soft); max-width: 640px; margin: 0 auto 4px; }
.hero .lede strong { color: var(--burgundy); font-weight: 600; }

.flourish { color: var(--gold); text-align: center; font-size: 22px; letter-spacing: 6px; margin: 8px 0; }

/* Bridge illustration block */
.bridge-block { margin: 14px auto 4px; max-width: 560px; }
.bridge-block svg { width: 100%; height: auto; color: var(--gold); }
.bridge-caption {
  font-family: var(--display); color: var(--burgundy); font-weight: 600;
  font-size: 20px; text-align: center; margin-top: 2px;
}

/* Manuscript thumbnail (hero sides) */
.ms-thumb { text-align: center; }
.ms-thumb .frame {
  border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
  background: #efe3c4; box-shadow: var(--shadow-sm); padding: 6px;
}
.ms-thumb .frame .surface {
  border: 1px solid var(--line-soft); border-radius: 3px; overflow: hidden;
  aspect-ratio: 4 / 3; background: #e9dcbb;
}
.ms-thumb .cite { font-style: italic; font-size: 15.5px; color: var(--ink-soft); margin: 9px 2px 7px; font-family: var(--display); }
.ms-thumb .cite b { font-style: normal; font-weight: 600; color: var(--ink); }

/* meta chips */
.chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.chip {
  display: inline-flex; align-items: stretch; border: 1px solid var(--line);
  border-radius: 5px; overflow: hidden; font-size: 12.5px; background: var(--card-bg);
}
.chip .k { background: var(--parchment-deep); color: var(--ink-faint); padding: 3px 8px; border-right: 1px solid var(--line-soft); letter-spacing: .3px; }
.chip .v { padding: 3px 9px; color: var(--ink); font-weight: 600; }

/* =====================  Explorer (cards + detail)  =================== */
.explorer { padding: 22px 0 10px; }
.explorer-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 26px; align-items: start; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: linear-gradient(180deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  cursor: pointer;
  position: relative;
  transition: transform .14s ease, box-shadow .18s ease, border-color .18s ease;
  box-shadow: var(--shadow-sm);
  min-height: 150px;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--gold-soft); }
.card .icon { width: 46px; height: 46px; color: var(--gold); margin-bottom: 12px; }
.card h3 { font-family: var(--display); font-weight: 600; font-size: 24px; margin: 0 0 8px; color: var(--ink); line-height: 1.08; }
.card p { margin: 0; font-size: 15.5px; color: var(--ink-soft); line-height: 1.4; }
.card p.sub { color: var(--ink-faint); font-size: 14.5px; }
.card .badge { position: absolute; top: 14px; right: 14px; width: 26px; height: 26px; color: var(--gold-bright); opacity: 0; transition: opacity .15s; }
.card.wide { grid-column: 1 / -1; }

.card.active {
  background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep));
  border-color: var(--burgundy-deep);
  box-shadow: var(--shadow);
}
.card.active h3, .card.active p { color: var(--burgundy-ink); }
.card.active p.sub { color: #e7c9a8; }
.card.active .icon { color: var(--gold-bright); }
.card.active .badge { opacity: 1; }

/* Detail panel */
.detail {
  background: linear-gradient(180deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: sticky; top: 92px;
}
.detail-head {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 20px; border-bottom: 1px solid var(--line-soft);
}
.detail-head .seal {
  width: 52px; height: 52px; flex: none; border-radius: 9px;
  background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep));
  display: grid; place-items: center; box-shadow: var(--shadow-sm);
}
.detail-head .seal svg { width: 30px; height: 30px; color: var(--gold-bright); }
.detail-head h2 { font-family: var(--display); font-weight: 600; font-size: 34px; margin: 0; color: var(--ink); line-height: 1; }
.detail-head .tagline { font-size: 14.5px; color: var(--ink-faint); margin-top: 2px; }
.detail-head .close {
  margin-left: auto; width: 34px; height: 34px; border-radius: 50%;
  background: var(--burgundy); color: #fff; border: none; cursor: pointer;
  display: grid; place-items: center; font-size: 18px; line-height: 1; flex: none;
  transition: background .15s;
}
.detail-head .close:hover { background: var(--burgundy-deep); }

.detail-body { padding: 18px 20px 20px; }

/* Greek / Arabic example pair */
.examples { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.example { border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: #efe3c4; }
.example .label { font-family: var(--display); font-style: italic; text-align: center; font-size: 14.5px; color: var(--ink-soft); padding: 6px; border-bottom: 1px solid var(--line-soft); background: var(--card-bg); }
.example .surface { padding: 12px 13px; min-height: 132px; background:
    repeating-linear-gradient(0deg, rgba(122,29,43,0.05) 0 1px, transparent 1px 26px), #ece0c0; }
.example .surface.greek { font-family: var(--greek); font-size: 13.5px; line-height: 1.9; color: #4a3722; }
.example .surface.arabic { font-family: var(--arabic); font-size: 17px; line-height: 2.05; color: #4a3722; direction: rtl; text-align: right; }
.example .surface .red { color: var(--burgundy); }

/* properties table */
.props { border-top: 1px solid var(--line-soft); }
.prop-row { display: grid; grid-template-columns: 200px 1fr; gap: 14px; padding: 11px 2px; border-bottom: 1px solid var(--line-soft); align-items: baseline; }
.prop-row .k { display: flex; align-items: center; gap: 9px; color: var(--gold); font-family: var(--display); font-size: 18px; font-weight: 600; }
.prop-row .k svg { width: 19px; height: 19px; color: var(--gold); flex: none; }
.prop-row .v { color: var(--ink); font-size: 16.5px; }
.prop-row .v .gloss { color: var(--ink-faint); }

/* detail footer (source/date/tradition + button) */
.detail-foot {
  display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 16px; align-items: center;
  padding: 16px 20px; border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, transparent, rgba(173,130,48,0.05));
}
.foot-item { display: flex; align-items: center; gap: 10px; }
.foot-item svg { width: 24px; height: 24px; color: var(--gold); flex: none; }
.foot-item .ft-k { font-family: var(--display); font-weight: 600; font-size: 16px; color: var(--ink); }
.foot-item .ft-v { font-size: 13px; color: var(--ink-faint); }
.btn-source {
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap;
  background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep));
  color: #fdf3e2; border: none; border-radius: var(--radius-sm);
  padding: 12px 18px; font-family: var(--display); font-size: 17px; font-weight: 600;
  cursor: pointer; box-shadow: var(--shadow-sm); text-decoration: none;
}
.btn-source:hover { color: #fff; text-decoration: none; filter: brightness(1.07); }
.btn-source svg { width: 17px; height: 17px; }

/* =====================  Source cards (hero row)  ==================== */
.source-card {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 10px;
  align-items: center;
}

/* =====================  Banner ribbon  ============================== */
.ribbon {
  margin: 26px 0 22px;
  background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep));
  border-radius: 8px; box-shadow: var(--shadow);
  border: 1px solid var(--burgundy-deep);
  padding: 16px 24px; text-align: center; position: relative;
}
.ribbon p { margin: 0; font-family: var(--display); font-style: italic; font-size: clamp(22px, 3vw, 33px); color: var(--burgundy-ink); letter-spacing: .4px; }
.ribbon .orn { color: var(--gold-bright); margin: 0 16px; }

/* =====================  Footer  ===================================== */
.site-foot { border-top: 1px solid var(--line); margin-top: 20px; }
.site-foot .wrap { display: flex; align-items: center; gap: 24px; padding: 18px 28px; flex-wrap: wrap; }
.site-foot .lead { font-size: 15px; color: var(--ink-soft); max-width: 460px; }
.foot-tags { display: flex; gap: 22px; flex: 1; justify-content: center; flex-wrap: wrap; }
.foot-tags span { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; color: var(--ink-soft); font-family: var(--display); }
.foot-tags svg { width: 18px; height: 18px; color: var(--gold); }
.site-foot .right { text-align: right; font-size: 14px; color: var(--ink-faint); }
.site-foot .right b { color: var(--ink-soft); font-weight: 600; display: block; font-family: var(--display); font-size: 16px; }

.divider-rule { height: 1px; background: linear-gradient(90deg, transparent, var(--rule), transparent); border: 0; margin: 6px 0; }

/* =====================  Content pages (about / explore / etc)  ====== */
.page-head { text-align: center; padding: 40px 0 14px; }
.page-head .kicker { font-family: var(--display); letter-spacing: 4px; text-transform: uppercase; font-size: 14px; color: var(--gold); }
.page-head h1 { font-family: var(--display); font-weight: 600; font-size: clamp(38px, 5vw, 62px); margin: 6px 0 8px; color: var(--ink); }
.page-head p { max-width: 720px; margin: 0 auto; color: var(--ink-soft); font-size: 19px; }

.prose { max-width: 820px; margin: 0 auto; padding: 10px 0 40px; }
.prose h2 { font-family: var(--display); font-weight: 600; font-size: 32px; color: var(--burgundy); margin: 34px 0 10px; }
.prose h3 { font-family: var(--display); font-weight: 600; font-size: 24px; color: var(--ink); margin: 24px 0 8px; }
.prose p { margin: 0 0 14px; color: var(--ink-soft); }
.prose blockquote {
  margin: 18px 0; padding: 12px 20px; border-left: 3px solid var(--gold);
  background: var(--card-bg); border-radius: 0 6px 6px 0; color: var(--ink);
}
.prose blockquote .src { display: block; margin-top: 8px; font-size: 14px; color: var(--ink-faint); font-style: italic; }
.prose .greek { font-family: var(--greek); }

.card-panel {
  background: linear-gradient(180deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 22px 24px;
}

/* data tables */
table.data { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 16px; background: var(--card-bg); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); }
table.data th { background: linear-gradient(180deg, var(--burgundy), var(--burgundy-deep)); color: var(--burgundy-ink); font-family: var(--display); font-weight: 600; text-align: left; padding: 10px 14px; font-size: 17px; }
table.data td { padding: 10px 14px; border-bottom: 1px solid var(--line-soft); color: var(--ink-soft); vertical-align: top; }
table.data tr:last-child td { border-bottom: 0; }
table.data tr:nth-child(even) td { background: rgba(173,130,48,0.04); }

/* figure */
figure.fig { margin: 22px 0; text-align: center; }
figure.fig img { display: inline-block; border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 8px; box-shadow: var(--shadow-sm); max-height: 380px; }
figure.fig figcaption { font-size: 14.5px; color: var(--ink-faint); font-style: italic; margin-top: 8px; }

/* papyrus gallery cards */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; padding: 14px 0 40px; }
.papyrus {
  background: linear-gradient(180deg, var(--card-bg), var(--card-bg-2));
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .14s, box-shadow .18s; display: flex; flex-direction: column;
}
.papyrus:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.papyrus .pp-head { padding: 16px 18px 10px; border-bottom: 1px solid var(--line-soft); }
.papyrus .pp-id { font-family: var(--display); font-weight: 600; font-size: 22px; color: var(--burgundy); }
.papyrus .pp-topic { color: var(--ink); font-size: 17px; margin-top: 2px; }
.papyrus .pp-body { padding: 14px 18px; color: var(--ink-soft); font-size: 15.5px; flex: 1; }
.papyrus .pp-meta { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 18px 16px; }

/* tag pills row */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { font-size: 13px; padding: 3px 11px; border-radius: 20px; border: 1px solid var(--line); color: var(--ink-soft); background: var(--card-bg); }
.pill.solid { background: var(--burgundy); color: var(--burgundy-ink); border-color: var(--burgundy-deep); }

/* utility */
.center { text-align: center; }
.muted { color: var(--ink-faint); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* =====================  Papyrus text (Greek + translation)  ========= */
.gallery { align-items: start; }
.pp-text { border-top: 1px solid var(--line-soft); margin: 2px 18px 16px; }
.pp-text > summary {
  cursor: pointer; list-style: none; padding: 11px 2px;
  font-family: var(--display); font-weight: 600; font-size: 16.5px; color: var(--burgundy);
  display: flex; align-items: center; gap: 9px; user-select: none;
}
.pp-text > summary::-webkit-details-marker { display: none; }
.pp-text > summary::before { content: "\276F"; font-size: 12px; color: var(--gold); transition: transform .15s ease; }
.pp-text[open] > summary::before { transform: rotate(90deg); }
.pp-text-body { padding: 2px 2px 6px; }
.pp-sec-label {
  font-family: var(--display); font-weight: 600; color: var(--ink); font-size: 16px;
  margin: 14px 0 6px; padding-top: 10px; border-top: 1px dotted var(--line-soft);
}
.pp-text-body > .pp-sec-label:first-child { border-top: 0; padding-top: 0; margin-top: 2px; }
.pp-greek-label, .pp-trans-label {
  font-family: var(--display); font-style: italic; font-size: 13px; color: var(--ink-faint); margin: 9px 0 4px;
}
.pp-greek {
  font-family: "Cardo", "Gentium Book Plus", "New Athena Unicode", var(--greek); font-size: 13.5px; line-height: 1.95; color: #46331f;
  background: repeating-linear-gradient(0deg, rgba(122,29,43,0.05) 0 1px, transparent 1px 25px), #ece0c0;
  border: 1px solid var(--line-soft); border-radius: 6px; padding: 11px 13px; overflow-x: auto;
}
.pp-greek .ln { color: var(--ink-faint); font-size: 10px; margin-right: 8px; vertical-align: 1px; user-select: none; }
.pp-greek .paragraphos { display: inline-block; width: 44%; border-bottom: 1px solid var(--gold-soft); opacity: .6; margin: 4px 0; vertical-align: middle; }
.pp-trans { font-size: 15px; color: var(--ink-soft); line-height: 1.55; }
.pp-cite { font-size: 12.5px; color: var(--ink-faint); font-style: italic; margin-top: 9px; }
.pp-text-note { font-size: 14.5px; line-height: 1.5; padding: 4px 2px 8px; color: var(--ink-soft); }

/* =====================  Responsive  ================================ */
@media (max-width: 1200px) {
  .explorer-grid { grid-template-columns: 1fr; }
  .detail { position: static; }
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .ms-thumb { max-width: 360px; margin: 0 auto; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .site-foot .wrap { flex-direction: column; text-align: center; }
  .site-foot .right, .site-foot .lead { text-align: center; }
}
@media (max-width: 560px) {
  body { font-size: 17px; }
  .cards { grid-template-columns: 1fr; }
  .examples { grid-template-columns: 1fr; }
  .detail-foot { grid-template-columns: 1fr; }
  .topbar .wrap { height: auto; padding: 12px 20px; flex-wrap: wrap; }
}