/* AGO Compendium — shared design system.
   "The Red Book": an illuminated-manuscript hierarchy built from two scribal
   tools — rubrication (red ink for headings) and gilding (gold for initials
   and rules) — on vellum. Linked by every page; page-specific rules live in
   each page's own <style>. */

:root {
  /* vellum ground */
  --parchment: #f1e7cf;
  --parchment-dark: #e7dabb;
  --panel: #fbf5e4;          /* card / raised surface */
  --row-alt: #ece0c4;
  /* ink */
  --ink: #28201a;
  --ink-soft: #6c5a42;
  /* rubric (red ink) — headings & interaction */
  --accent: #7c1d1d;
  --accent-soft: rgba(124, 29, 29, .10);
  /* gilt (gold leaf) — initials, rules, marks */
  --gold: #a6822f;
  --gold-leaf: #c4a04a;
  --gold-deep: #856425;
  /* structural lines */
  --line: #cbb98d;
  --line-dark: #ab9362;
  /* semantic, muted into the palette */
  --good: #3a6038;
  --bad: #8a2525;
  --serif: 'EB Garamond', Garamond, 'Palatino Linotype', 'Book Antiqua', serif;
  --display: Cinzel, 'Trajan Pro', 'Palatino Linotype', serif;
  --ctrlh: 49px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--parchment);
  background-image:
    radial-gradient(ellipse at top, rgba(255,252,240,.55), transparent 62%),
    radial-gradient(ellipse at bottom, rgba(120,90,40,.12), transparent 60%),
    repeating-linear-gradient(0deg, rgba(120,90,40,.022) 0 2px, transparent 2px 4px);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.4;
}

/* ----------------------------------------------------- illuminated masthead */
header {
  position: relative;
  text-align: center;
  padding: 30px 16px 16px;
  background: linear-gradient(var(--parchment-dark), var(--parchment));
  border-bottom: 1px solid var(--gold-deep);
  box-shadow: 0 1px 0 var(--gold-leaf), 0 3px 0 -1px var(--parchment), 0 4px 0 -1px var(--line-dark);
}
header h1 {
  position: relative;
  display: inline-block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: .14em;
  margin: 0;
  /* gold-leaf fill with an engraved edge */
  color: var(--gold-deep);
  background: linear-gradient(176deg, #d8b766 0%, var(--gold-leaf) 38%, var(--gold-deep) 70%, #b8923a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 1px 0 rgba(255,250,235,.4);
  filter: drop-shadow(0 1px 0 rgba(60,40,10,.25));
}
/* gold rules that draw themselves in on either side of the title */
header h1::before, header h1::after {
  content: "";
  position: absolute;
  top: 50%;
  width: clamp(20px, 9vw, 90px);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-leaf), var(--gold-deep));
  transform: scaleX(0);
  animation: ruleIn .9s ease .15s forwards;
}
header h1::before { right: 100%; margin-right: 22px; transform-origin: right center; }
header h1::after { left: 100%; margin-left: 22px; background: linear-gradient(90deg, var(--gold-deep), var(--gold-leaf), transparent); transform-origin: left center; }
@keyframes ruleIn { to { transform: scaleX(1); } }
header .sub {
  font-style: italic;
  color: var(--ink-soft);
  margin: 8px 0 0;
  font-size: 16.5px;
}

/* ------------------------------------------------------------------- navbar */
.sitenav {
  margin: 14px 0 0;
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px 4px;
}
.sitenav a {
  position: relative;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 4px 12px;
  border-radius: 3px;
  transition: color .18s ease, background .18s ease;
}
/* hover: a gilt underline draws in from the centre */
.sitenav a::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 1.5px;
  background: var(--gold-leaf);
  transform: scaleX(0);
  transition: transform .2s ease;
}
.sitenav a:hover { color: var(--accent); }
.sitenav a:hover::after { transform: scaleX(1); }
/* active page: an inked rubric stamp */
.sitenav a.active {
  color: #f6eeda;
  background: var(--accent);
  box-shadow: inset 0 1px 2px rgba(0,0,0,.35), 0 1px 0 rgba(255,250,235,.4);
}
.sitenav a.active::after { display: none; }

/* ------------------------------------------------------------ control strip */
.controls {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  background: var(--parchment-dark);
  border-bottom: 1px solid var(--gold-deep);
  box-shadow: 0 2px 7px rgba(60,40,10,.16);
}
.controls label {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.controls input[type=search], .controls select {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  padding: 5px 9px;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.controls input[type=search] { width: 230px; }
.controls input[type=search]:focus, .controls select:focus {
  outline: none;
  border-color: var(--gold-deep);
  box-shadow: 0 0 0 2px rgba(196,160,74,.35);
}
.catbtns { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line-dark); border-radius: 3px; overflow: hidden; }
.catbtns button {
  font-family: var(--display);
  font-size: 11.5px;
  letter-spacing: .05em;
  padding: 5px 11px;
  background: var(--panel);
  border: none;
  border-right: 1px solid var(--line);
  color: var(--ink-soft);
  cursor: pointer;
  transition: background .15s ease, color .15s ease, transform .06s ease;
}
.catbtns button:last-child { border-right: none; }
.catbtns button:hover { background: #f3e9cf; color: var(--accent); }
.catbtns button:active { transform: translateY(1px); }
/* selected filter: pressed inked stamp */
.catbtns button.active {
  background: var(--accent);
  color: #f6eeda;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.4);
}
.count { font-style: italic; color: var(--ink-soft); font-size: 14px; }

/* --------------------------------------------------------- shared fragments */
.dim { color: var(--ink-soft); font-size: 12.5px; }
.badge {
  display: inline-block;
  font-size: 10.5px;
  font-family: var(--display);
  letter-spacing: .04em;
  border: 1px solid var(--gold);
  color: var(--gold-deep);
  border-radius: 3px;
  padding: 0 3px;
  margin-left: 4px;
  vertical-align: 1px;
}
.badge.eop { border-color: var(--accent); color: var(--accent); }
.badge.upd { border-color: var(--gold-leaf); color: var(--gold-deep); background: rgba(196,160,74,.12); }

/* a rubricated section head: gilt pilcrow + red ink small caps */
.rubric {
  font-family: var(--display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
}
.rubric::before {
  content: "\00B6";
  color: var(--gold-leaf);
  margin-right: .5em;
  font-weight: 700;
}

/* a gilt drop-cap for the opening of a prose passage */
.dropcap::first-letter {
  font-family: var(--display);
  font-weight: 700;
  font-size: 3.1em;
  line-height: .82;
  float: left;
  margin: 6px 8px 0 0;
  color: var(--gold-deep);
  background: linear-gradient(170deg, var(--gold-leaf), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* a card / raised panel that lifts gently on hover */
.lift { transition: transform .16s ease, box-shadow .16s ease; }
.lift:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(60,40,10,.22); }

/* cross-page links */
a.x { color: var(--accent); text-decoration: none; border-bottom: 1px dotted var(--accent); }
a.x:hover { background: var(--accent-soft); }
a.bldlink { color: inherit; text-decoration: none; border-bottom: 1px dotted var(--line-dark); }
a.bldlink:hover { color: var(--accent); }

/* ------------------------------------------------------------------ footer */
footer {
  text-align: center;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 13.5px;
  padding: 16px 14px;
  margin-top: 10px;
  border-top: 1px solid var(--gold-deep);
  box-shadow: 0 -1px 0 var(--gold-leaf);
}
footer code { font-style: normal; font-family: Consolas, monospace; font-size: 12.5px; }
#lq { margin-top: 7px; max-width: 70ch; margin-left: auto; margin-right: auto; }

/* a gentle settle as each page's content arrives */
main { animation: pageIn .45s ease both; }
@keyframes pageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ----------------------------------------------------------- accessibility */
:focus-visible { outline: 2px solid var(--gold-deep); outline-offset: 2px; border-radius: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  header h1::before, header h1::after { transform: scaleX(1); }
}