/* ==========================================================================
   Divanu Lugati't-Turk map - styles
   Structure: tokens, base, layout, panels, map markers, card, dialogs, mobile.
   Colour is never the only carrier of meaning (letters and shapes are used too).
   ========================================================================== */

:root {
  --bg: #efe9d9;
  --surface: #ffffff;
  --text: #1a2030;
  --muted: #4a4f5c;
  --border: #d6ccb4;
  --accent: #8f2d20;
  --accent-text: #ffffff;
  --focus: #1d4ed8;
  --warn-bg: #fff4d6;
  --warn-text: #5c3b00;

  --c-place: #1b5e8c;
  --c-group: #8a4b00;
  --c-geography: #2e6b3c;
  --c-route: #6b3f8c;

  --topbar-h: 3.5rem;
  --sidebar-w: 17.5rem;
  --card-w: 20rem;
  --radius: 0.5rem;
}

body.hc {
  --bg: #ffffff;
  --text: #000000;
  --muted: #1a1a1a;
  --border: #000000;
  --accent: #000000;
  --focus: #0000ee;
  --c-place: #003f6b;
  --c-group: #5c3000;
  --c-geography: #004d1a;
  --c-route: #4a1d6b;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { font-size: 100%; }
body {
  margin: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5rem; }
h1 { font-size: 1.15rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 1rem; margin-top: 1rem; }
p { margin: 0 0 0.75rem; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.skip-link {
  position: absolute; left: 0.5rem; top: -4rem; z-index: 3000;
  background: var(--surface); color: var(--text); padding: 0.5rem 0.75rem; border: 2px solid var(--text);
}
.skip-link:focus { top: 0.5rem; }

/* ----- top bar ----- */
.topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem;
  padding: 0.5rem 1rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.topbar__title { margin-right: auto; }
.topbar__subtitle { margin: 0; font-size: 0.8rem; color: var(--muted); }
.topbar__actions, .topbar__settings { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* ----- buttons ----- */
.btn {
  font: inherit; font-size: 0.9rem; cursor: pointer;
  padding: 0.4rem 0.75rem; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  min-height: 2.5rem;
}
.btn:hover { border-color: var(--text); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn--icon { min-width: 2.5rem; }
.btn[aria-pressed="true"] { background: var(--text); color: var(--surface); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.icon-btn {
  font: inherit; font-size: 1.5rem; line-height: 1; cursor: pointer;
  width: 2.5rem; height: 2.5rem; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}

/* ----- banners ----- */
.banner { padding: 0.5rem 1rem; font-size: 0.9rem; }
.banner--demo { background: var(--warn-bg); color: var(--warn-text); border-bottom: 1px solid #e0c36a; }
.banner--status { background: #fde8e8; color: #6b1313; border-bottom: 1px solid #e5a3a3; }
body.hc .banner--demo, body.hc .banner--status { background: #fff; color: #000; border-bottom: 2px solid #000; }

/* ----- layout ----- */
.layout {
  flex: 1; min-height: 0;
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
}
.layout.has-card { grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--card-w); }

.sidebar {
  overflow-y: auto; padding: 0.75rem; background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 0.75rem;
}
.panel {
  margin: 0; padding: 0.75rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); min-width: 0;
}
.panel__title { display: block; padding: 0; font-weight: 700; font-size: 0.95rem; margin-bottom: 0.5rem; }
.hint { font-size: 0.82rem; color: var(--muted); margin: 0.4rem 0 0; }

.search-row { display: flex; gap: 0.4rem; }
.search-row input {
  flex: 1; min-width: 0; font: inherit; padding: 0.4rem 0.6rem;
  border: 1px solid var(--text); border-radius: var(--radius); background: var(--surface); color: var(--text);
}

.check { display: flex; align-items: flex-start; gap: 0.5rem; padding: 0.3rem 0; cursor: pointer; font-size: 0.92rem; }
.check input { width: 1.15rem; height: 1.15rem; margin-top: 0.15rem; flex: none; }
.check .swatch { margin-top: 0.1rem; }
.check--disabled { color: var(--muted); cursor: not-allowed; }

/* ----- results list ----- */
.results { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; max-height: 14rem; overflow-y: auto; }
.results__item {
  width: 100%; text-align: left; font: inherit; cursor: pointer;
  padding: 0.45rem 0.6rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text); display: flex; flex-direction: column; gap: 0.1rem;
}
.results__item[aria-current="true"] { border: 2px solid var(--text); background: #f1ebe2; }
body.hc .results__item[aria-current="true"] { background: #fff; border-width: 3px; }
.results__name { font-weight: 600; }
.results__meta { font-size: 0.8rem; color: var(--muted); }

/* ----- maps ----- */
.maps { position: relative; min-width: 0; min-height: 0; display: grid; gap: 2px; background: var(--border); }
.maps[data-mode="both"] { grid-template-columns: 1fr 1fr; }
.maps[data-mode="schematic"], .maps[data-mode="modern"] { grid-template-columns: 1fr; }

.map-pane { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--surface); }
.map-pane__title { margin: 0; padding: 0.35rem 0.75rem; font-size: 0.85rem; background: var(--surface); border-bottom: 1px solid var(--border); }
.map-canvas { flex: 1; min-height: 0; background: #dfe6ec; }
.leaflet-container { font: inherit; }

.map-toggle-sidebar { display: none; position: absolute; left: 0.6rem; bottom: 0.6rem; z-index: 1200; }

/* placeholder note for the original map */
.schematic-note-wrap { background: none; border: 0; }
.schematic-note {
  width: 340px; display: flex; flex-direction: column; gap: 0.15rem; text-align: center;
  padding: 0.5rem 0.75rem; background: rgba(255, 255, 255, 0.92); color: var(--text);
  border: 1px dashed var(--muted); border-radius: var(--radius); font-size: 0.85rem; line-height: 1.3;
}

/* ----- markers: shape = location certainty, letter + colour = category ----- */
.mk-wrap { background: none; border: 0; }
.mk {
  --c: var(--c-place);
  width: 30px; height: 30px; display: grid; place-items: center;
  background: var(--c); color: #fff; border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.55), 0 1px 4px rgba(0, 0, 0, 0.4);
  font: 700 14px/1 system-ui, sans-serif;
}
.mk--precise { border-radius: 50%; }
.mk--schematic { border-radius: 4px; }
.mk--approximate {
  border-radius: 50%; border: 3px dashed var(--c);
  background: color-mix(in srgb, var(--c) 18%, #fff); color: var(--c); box-shadow: none;
}
.mk--disputed { transform: rotate(45deg); border-radius: 3px; border: 3px dotted #fff; width: 26px; height: 26px; margin: 2px; }
.mk--disputed .mk__glyph { transform: rotate(-45deg); }
.mk.is-selected { outline: 4px solid var(--focus); outline-offset: 2px; }
.mk--sample { display: inline-grid; flex: none; }
.mk--sample.mk--disputed { margin: 2px; }

.swatch {
  display: inline-grid; place-items: center; width: 1.4rem; height: 1.4rem; border-radius: 0.25rem;
  background: var(--c); color: #fff; font: 700 0.8rem/1 system-ui, sans-serif; flex: none;
}

/* uncertainty areas on the modern map (Leaflet path classes) */
.area--place { stroke: var(--c-place); fill: var(--c-place); }
.area--group { stroke: var(--c-group); fill: var(--c-group); }
.area--geography { stroke: var(--c-geography); fill: var(--c-geography); }
.area--route { stroke: var(--c-route); fill: var(--c-route); }

/* ----- info card ----- */
.info-card {
  overflow-y: auto; padding: 0.9rem; background: var(--surface); border-left: 1px solid var(--border);
}
.card__head { display: flex; align-items: flex-start; gap: 0.5rem; justify-content: space-between; }
.card__head h2 { margin: 0; font-size: 1.25rem; }
.card__head h2:focus { outline: none; }
.card__kind { margin: 0 0 0.1rem; font-size: 0.8rem; color: var(--muted); text-transform: none; }
.card__demo { margin: 0.6rem 0; padding: 0.5rem 0.6rem; background: var(--warn-bg); color: var(--warn-text); border: 1px solid #e0c36a; border-radius: var(--radius); font-size: 0.88rem; }
body.hc .card__demo { background: #fff; color: #000; border: 2px solid #000; }
.card__badges { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.6rem 0; }
.badge { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.2rem 0.55rem; border: 1px solid var(--border); border-radius: 999px; font-size: 0.82rem; background: var(--surface); }
.card__facts { margin: 0.5rem 0; }
.card__facts dt { font-size: 0.78rem; color: var(--muted); margin-top: 0.5rem; }
.card__facts dd { margin: 0; }
.card__list { margin: 0.25rem 0 0.75rem; padding-left: 1.1rem; font-size: 0.9rem; }
.card__note { font-size: 0.88rem; color: var(--muted); }
.link-btn { font: inherit; background: none; border: 0; padding: 0; color: var(--focus); text-decoration: underline; cursor: pointer; }

/* ----- dialogs ----- */
dialog {
  width: min(40rem, calc(100vw - 2rem)); max-height: calc(100dvh - 2rem);
  border: 2px solid var(--text); border-radius: var(--radius); padding: 1rem 1.25rem;
  background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.5); }
.dialog__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.dialog__head h2 { margin: 0; }
.dialog__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: flex-end; margin-top: 1rem; }

.legend-list { list-style: none; padding: 0; margin: 0.5rem 0; display: flex; flex-direction: column; gap: 0.6rem; }
.legend-list li { display: flex; gap: 0.7rem; align-items: flex-start; }
.legend-list strong { display: block; }
.legend-list span { font-size: 0.88rem; color: var(--muted); }

/* quiz */
.quiz-q { border: 0; padding: 0; margin: 0 0 0.75rem; }
.quiz-q legend { font-weight: 700; margin-bottom: 0.5rem; padding: 0; }
.quiz-option { display: flex; gap: 0.6rem; align-items: flex-start; padding: 0.5rem 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 0.4rem; cursor: pointer; }
.quiz-option input { margin-top: 0.25rem; }
.quiz-option.is-correct { border: 2px solid #1c6b34; background: #e8f5ec; }
.quiz-option.is-wrong { border: 2px solid #8c1c1c; background: #fbe9e9; }
body.hc .quiz-option.is-correct, body.hc .quiz-option.is-wrong { background: #fff; border-width: 3px; }
.quiz-feedback { padding: 0.6rem; border-radius: var(--radius); border: 1px solid var(--border); margin: 0.5rem 0; }
.quiz-feedback:focus { outline: 3px solid var(--focus); }
.quiz-progress { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.5rem; }

/* sources */
.source { padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.source:target, .source.is-flash { background: #fff4d6; }
.source h4 { margin: 0 0 0.2rem; font-size: 1rem; }
.source p { margin: 0.1rem 0; font-size: 0.9rem; }

/* ----- small screens ----- */
@media (max-width: 860px) {
  .layout, .layout.has-card { grid-template-columns: minmax(0, 1fr); }
  .maps[data-mode="both"] { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }

  .sidebar {
    position: fixed; z-index: 1500; left: 0; top: 0; bottom: 0; width: min(88vw, 22rem);
    transform: translateX(-102%); transition: transform 0.2s ease; box-shadow: 2px 0 12px rgba(0, 0, 0, 0.3);
  }
  .sidebar.is-open { transform: none; }
  .map-toggle-sidebar { display: block; }

  /* The card is a bottom sheet limited in height so the map stays usable. */
  .info-card {
    position: fixed; z-index: 1400; left: 0; right: 0; bottom: 0; max-height: 42dvh;
    border-left: 0; border-top: 2px solid var(--text); box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.25);
  }
  .layout.has-card .map-toggle-sidebar { bottom: calc(42dvh + 0.6rem); }
  .topbar { padding: 0.4rem 0.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar { transition: none; }
}

.map-credit { margin: 0; padding: 0.25rem 0.75rem; font-size: 0.75rem; background: var(--surface); border-top: 1px solid var(--border); }

.glossary dt { font-weight: 700; margin-top: 0.75rem; }
.glossary dd { margin: 0.15rem 0 0; }

.banner--activity { background: var(--surface); border: 2px solid var(--c-place); display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; align-items: center; }
.banner--activity p { margin: 0; }

/* Classroom (presentation) mode: no sidebar, larger map area. Arrow keys step through records. */
body.presenting .layout, body.presenting .layout.has-card { grid-template-columns: minmax(0, 1fr); }
body.presenting .layout.has-card { grid-template-columns: minmax(0, 1fr) var(--card-w); }
body.presenting .sidebar { display: none; }
body.presenting .map-toggle-sidebar { display: none; }


/* ==========================================================================
   Institutional theme: ink navy, parchment, vermilion accent, serif headings.
   Appended last so it overrides the base rules; high contrast mode below still wins.
   Buttons are symbols with tooltips (data-tip) and accessible names (aria-label).
   ========================================================================== */
:root {
  --ink: #17202e;
  --ink-2: #222d40;
  --on-ink: #ece4cf;
  --gold: #c2a24e;
  --paper: #fffdf8;
  --border-strong: #b9ad8f;
  --accent-hover: #6e2017;
  --accent-soft: #f6e9e4;
  --accent-soft-text: #6e2017;
  --shadow-sm: 0 1px 2px rgba(23, 32, 46, 0.1);
  --shadow-lg: 0 12px 32px rgba(23, 32, 46, 0.28);
  --radius: 0.3rem;
  --serif: Georgia, "Times New Roman", "Noto Serif", serif;
}
body.hc { --ink: #000; --ink-2: #000; --on-ink: #fff; --gold: #fff; --paper: #fff; --border-strong: #000; --accent-hover: #000; --accent-soft: #fff; --accent-soft-text: #000; }

h1, h2, h3 { font-family: var(--serif); }

/* ----- top bar ----- */
.topbar { background: var(--ink); color: var(--on-ink); border-bottom: 3px solid var(--gold); padding: 0.5rem 1rem; gap: 0.5rem 1.25rem; position: relative; z-index: 500; }
.topbar__brand { display: flex; align-items: center; gap: 0.75rem; margin-right: auto; min-width: 0; }
.logo { display: inline-grid; place-items: center; width: 2.6rem; height: 2.6rem; color: var(--gold); border: 1.5px solid var(--gold); border-radius: 50%; flex: none; }
.topbar__title { margin: 0; min-width: 0; }
.topbar__title h1 { margin: 0; font-size: 1.05rem; font-weight: 700; letter-spacing: 0.02em; color: #fff; }
.topbar__subtitle { margin: 0; font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold); }
.topbar__actions, .topbar__settings { display: flex; gap: 0.15rem; align-items: center; flex-wrap: wrap; }
.topbar__settings { padding-left: 0.9rem; border-left: 1px solid rgba(236, 228, 207, 0.25); }
.topbar :focus-visible { outline-color: #f5d78e; }

/* ----- symbol buttons ----- */
.btn { border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--paper); font-weight: 500; transition: background-color 0.15s, border-color 0.15s, color 0.15s; }
.btn:hover { background: #f7f1e1; border-color: var(--ink); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--sq { width: 2.5rem; padding: 0; display: inline-grid; place-items: center; }
.btn--tool, .btn--tool-light, .btn--tool-dark { position: relative; display: inline-grid; place-items: center; width: 2.4rem; height: 2.4rem; min-height: 0; padding: 0; }
.btn--tool { background: transparent; border-color: transparent; color: var(--on-ink); }
.btn--tool:hover { background: rgba(236, 228, 207, 0.12); border-color: transparent; }
.btn--tool[aria-pressed="true"] { background: var(--gold); color: var(--ink); }
.btn--tool-light { color: var(--ink); }
.btn--tool-dark { background: transparent; color: var(--on-ink); border-color: rgba(236, 228, 207, 0.45); }
.btn--tool-dark:hover { background: rgba(236, 228, 207, 0.12); border-color: var(--on-ink); }
.ico { display: block; }

/* tooltips for symbol buttons */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip); position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  background: #000; color: #fff; font: 500 0.75rem/1.2 system-ui, sans-serif; white-space: nowrap;
  padding: 0.3rem 0.5rem; border-radius: 0.25rem; pointer-events: none; opacity: 0; z-index: 3000;
}
[data-tip]:hover::after, [data-tip]:focus-visible::after { opacity: 1; }
.topbar__settings [data-tip]:last-child::after, .topbar__settings [data-tip]:nth-last-child(2)::after { left: auto; right: 0; transform: none; }
.panel [data-tip]::after, .cover [data-tip]::after { top: auto; bottom: calc(100% + 6px); }

/* ----- banners ----- */
.banner--demo { background: #f6eed2; color: #5c4510; border-bottom: 1px solid var(--gold); font-size: 0.85rem; padding: 0.35rem 1rem; }
.banner--activity { background: var(--accent-soft); border: 0; border-bottom: 1px solid var(--accent); }
body.hc .banner--demo, body.hc .banner--activity { background: #fff; border-bottom: 2px solid #000; }

/* ----- panels ----- */
.sidebar { background: var(--bg); border-right: 0; padding: 0.75rem 0 0.75rem 0.75rem; gap: 0.6rem; }
.panel { background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 0.8rem; }
.panel__title { font-family: var(--serif); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.5rem; }
body.hc .panel__title { color: #000; }
.search-row input { border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 0.45rem 0.65rem; background: #fff; }
.search-row input:focus { outline: 2px solid var(--ink); outline-offset: 0; }
.check input { accent-color: var(--accent); }
.results__item { border-radius: var(--radius); border-color: var(--border); background: #fff; }
.results__item:hover { background: #f7f1e1; }
.results__item[aria-current="true"] { border: 1px solid var(--accent); background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.panel--footer { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.panel--footer .hint { margin: 0; }

/* ----- maps ----- */
.maps { background: var(--bg); padding: 0.75rem; gap: 0.75rem; }
.map-pane { border: 1px solid var(--border-strong); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.map-pane__title { font-family: var(--serif); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; background: var(--ink-2); color: var(--on-ink); padding: 0.4rem 0.8rem; border-bottom: 2px solid var(--gold); }
.map-credit { color: var(--muted); background: var(--paper); }
.map-canvas { background: #d8d2c0; }
.map-toggle-sidebar { left: 1.25rem; bottom: 1.25rem; box-shadow: var(--shadow-lg); height: 2.8rem; width: 2.8rem; }

/* ----- info card ----- */
.info-card { background: var(--paper); margin: 0.75rem 0.75rem 0.75rem 0; border: 1px solid var(--border-strong); border-top: 4px solid var(--accent); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 1rem 1.1rem; }
.card__head h2 { font-size: 1.2rem; }
.card__kind, .card__facts dt { text-transform: uppercase; letter-spacing: 0.09em; font-size: 0.7rem; font-weight: 700; color: var(--muted); }
.card__demo { background: #f6eed2; border: 1px solid var(--gold); color: #5c4510; }
.badge { background: #f7f1e1; border-color: var(--border-strong); }
.link-btn { color: var(--accent-hover); }
.icon-btn { border-color: var(--border-strong); background: var(--paper); border-radius: var(--radius); }
.icon-btn:hover { background: #f7f1e1; }

/* ----- dialogs ----- */
dialog { border: 0; border-top: 4px solid var(--accent); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 1.25rem 1.4rem; background: var(--paper); }
dialog::backdrop { background: rgba(23, 32, 46, 0.65); }
body.hc dialog { border: 3px solid #000; }
.dialog__head h2 { color: var(--ink); }
.quiz-option { border-color: var(--border-strong); background: #fff; }
.quiz-option:hover { background: #f7f1e1; }
.quiz-option input { accent-color: var(--accent); }

/* ----- cover (main title page) ----- */
dialog.cover {
  width: 100vw; max-width: none; height: 100dvh; max-height: none; margin: 0; padding: 0; border: 0; border-radius: 0;
  background: radial-gradient(ellipse at 75% 50%, #2a3850 0%, var(--ink) 62%); color: var(--on-ink); overflow-y: auto;
}
dialog.cover::backdrop { background: var(--ink); }
.cover__inner { min-height: 100%; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); align-items: center; gap: 2.5rem; max-width: 76rem; margin: 0 auto; padding: 3rem 2rem; }
.cover__eyebrow { margin: 0 0 1rem; font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.cover h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); line-height: 1.1; margin: 0; color: #fff; font-weight: 700; letter-spacing: 0.01em; }
.cover__rule { width: 5rem; height: 3px; background: var(--gold); margin: 1.4rem 0; }
.cover__lead { font-size: 1.1rem; line-height: 1.6; max-width: 34rem; color: #d9d1bb; }
.cover__legend { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; margin: 1.6rem 0 1rem; padding: 0; }
.cover__legend li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: var(--on-ink); }
.cover .mk--approximate { background: color-mix(in srgb, var(--c) 22%, #fff); }
.cover__note { max-width: 34rem; font-size: 0.85rem; line-height: 1.5; color: #b7ae96; border-left: 2px solid var(--gold); padding-left: 0.8rem; margin: 0 0 1.6rem; }
.cover__actions { display: flex; align-items: center; gap: 0.75rem; }
.btn--cover { display: inline-flex; align-items: center; gap: 0.6rem; background: var(--gold); border-color: var(--gold); color: var(--ink); font-weight: 700; font-size: 1rem; padding: 0.6rem 1.2rem; min-height: 2.9rem; letter-spacing: 0.02em; }
.btn--cover:hover { background: #d5b765; border-color: #d5b765; }
.cover__figure { margin: 0; text-align: center; }
.cover__figure img { width: min(100%, 30rem); height: auto; aspect-ratio: 1 / 1; object-fit: cover; object-position: 50% 50%; border-radius: 50%; border: 3px solid var(--gold); box-shadow: 0 0 0 10px rgba(194, 162, 78, 0.18), var(--shadow-lg); filter: saturate(0.92); }
.cover__figure figcaption { margin-top: 1.1rem; font-size: 0.75rem; color: #a79f88; }
body.hc dialog.cover { background: #000; }

@media (max-width: 1100px) {
  .topbar__subtitle { display: none; }
}
@media (max-width: 860px) {
  .info-card { margin: 0; border-radius: 0.75rem 0.75rem 0 0; border: 0; border-top: 4px solid var(--accent); }
  .sidebar { padding: 0.75rem; }
  .maps { padding: 0.5rem; gap: 0.5rem; }
  .topbar__settings { border-left: 0; padding-left: 0; }
  .cover__inner { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding: 1.5rem 1.25rem 2rem; }
  .cover__figure { order: -1; }
  .cover__figure img { width: min(48vw, 11rem); box-shadow: 0 0 0 6px rgba(194, 162, 78, 0.18); }
  .cover__figure figcaption { display: none; }
  .cover__eyebrow { margin-bottom: 0.6rem; }
  .cover__legend { margin: 1rem 0 0.8rem; }
  .cover h2 { font-size: 2rem; }
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

.leaflet-container { font-size: 0.8rem; }
.leaflet-control-attribution { font-size: 0.68rem; }

/* the sidebar toggle exists only on small screens (must come after .btn--sq) */
.map-toggle-sidebar { display: none; }
@media (max-width: 860px) { .map-toggle-sidebar { display: inline-grid; } }

/* findings table: modern equivalents */
dialog.dialog--wide { width: min(64rem, calc(100vw - 2rem)); }
.table-wrap { overflow-x: auto; margin-top: 0.75rem; }
.equiv-table { border-collapse: collapse; width: 100%; font-size: 0.88rem; min-width: 38rem; }
.equiv-table caption { text-align: left; font-family: var(--serif); font-weight: 700; padding-bottom: 0.4rem; }
.equiv-table th, .equiv-table td { text-align: left; vertical-align: top; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); }
.equiv-table thead th { background: var(--ink-2); color: var(--on-ink); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; }
.equiv-table tbody th { font-weight: 600; }
.status-legend { list-style: none; display: flex; flex-wrap: wrap; gap: 0.3rem 1.2rem; padding: 0; margin: 0.5rem 0; font-size: 0.82rem; }
.status-symbol { display: inline-block; min-width: 1.1em; color: var(--accent); }
.equiv-table .link-btn { text-align: left; }
.status-symbol { font-family: system-ui, sans-serif; }

/* ----- opening animation (school identity and team) ----- */
.intro {
  position: fixed; inset: 0; z-index: 2000; display: grid; place-items: center; padding: 1.5rem; overflow-y: auto;
  background: radial-gradient(ellipse at 50% 40%, #2a3850 0%, var(--ink) 66%); color: var(--on-ink);
  opacity: 1; transition: opacity 0.6s ease; cursor: pointer;
}
.intro.is-leaving { opacity: 0; pointer-events: none; }
.intro__stage { display: flex; flex-direction: column; align-items: center; text-align: center; max-width: 40rem; }
.intro__emblem { position: relative; width: clamp(9rem, 28vw, 12.5rem); aspect-ratio: 1 / 1; margin-bottom: 1.6rem; animation: intro-pop 1.1s cubic-bezier(.2,.8,.2,1) 0.2s both; }
.intro__emblem img { width: 100%; height: 100%; display: block; border-radius: 50%; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45); }
.intro__ring { position: absolute; inset: -9%; width: 118%; height: 118%; transform: rotate(-90deg); }
.intro__ring circle { fill: none; stroke: var(--gold); stroke-width: 2; stroke-linecap: round; stroke-dasharray: 654; stroke-dashoffset: 654; animation: intro-ring 1.9s ease-out 0.5s forwards; }
.intro__eyebrow { margin: 0 0 0.6rem; font-size: 0.75rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); animation: intro-rise 0.8s ease 1.5s both; }
.intro__school { margin: 0; font-family: var(--serif); font-size: clamp(1.9rem, 6vw, 3.2rem); line-height: 1.1; letter-spacing: 0.04em; color: #fff; animation: intro-rise 0.9s ease 1.8s both; }
.intro__rule { width: 5rem; height: 3px; background: var(--gold); margin: 1.3rem 0; transform-origin: center; animation: intro-rule 0.8s ease 2.4s both; }
.intro__project { margin: 0 0 1.8rem; font-size: clamp(0.95rem, 2.4vw, 1.15rem); line-height: 1.55; color: #d9d1bb; animation: intro-rise 0.9s ease 3s both; }
.intro__team { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 2.6rem; margin: 0; }
.intro__team div { animation: intro-rise 0.9s ease both; }
.intro__team div:nth-child(1) { animation-delay: 3.8s; }
.intro__team div:nth-child(2) { animation-delay: 4.6s; }
.intro__team dt { font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.25rem; }
.intro__team dd { margin: 0; font-size: 1.15rem; color: #fff; }
.intro__motto { margin: 2rem 0 0; padding-top: 1.4rem; border-top: 1px solid rgba(194, 162, 78, 0.45); font-family: var(--serif); font-style: italic; font-size: clamp(1rem, 2.6vw, 1.25rem); line-height: 1.6; color: #e6dec8; animation: intro-rise 1s ease 5.6s both; }
.intro__skip {
  position: absolute; right: 1.25rem; bottom: 1.25rem; font: inherit; font-size: 0.9rem; color: var(--on-ink); background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 999px; padding: 0.45rem 1.1rem; cursor: pointer; animation: intro-rise 0.6s ease 1s both;
}
.intro__skip:hover { background: rgba(255, 255, 255, 0.12); }
.intro__skip:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

@keyframes intro-pop { from { opacity: 0; transform: scale(0.82); } to { opacity: 1; transform: scale(1); } }
@keyframes intro-ring { to { stroke-dashoffset: 0; } }
@keyframes intro-rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
@keyframes intro-rule { from { opacity: 0; transform: scaleX(0); } to { opacity: 1; transform: scaleX(1); } }

/* Reduced motion: show everything at once, no movement. */
@media (prefers-reduced-motion: reduce) {
  .intro, .intro * { animation: none !important; transition: none !important; }
  .intro__ring circle { stroke-dashoffset: 0; }
}
.intro.is-static, .intro.is-static * { animation: none !important; }
.intro.is-static .intro__ring circle { stroke-dashoffset: 0; }