/* Owner-directed late-Victorian collection atmosphere. Modern clinical content,
   original palette, source artwork and all learning-state behavior stay intact. */
:root {
  --museum-brass: var(--paper-3);
  --museum-brass-ink: #6b5136;
  --museum-panel: var(--maroon-900);
  --museum-gilt-line: rgba(205, 191, 159, .46);
  --museum-wall: radial-gradient(ellipse at 50% 0%, rgba(205,191,159,.10), transparent 65%),
    repeating-linear-gradient(90deg, transparent 0 119px, rgba(205,191,159,.035) 119px 121px),
    linear-gradient(115deg, var(--maroon-950), var(--maroon-800) 57%, var(--maroon-950));
  --museum-frame-shadow: 0 2px 0 rgba(242,234,217,.2), 0 14px 28px rgba(20,5,9,.28);
}
body { background: var(--paper); }
.pac-rail {
  background: var(--paper);
  min-height: 68px;
  border-block: 3px double rgba(81,71,62,.36);
}
.pac-mark { font-family: var(--serif); font-size: 1.15rem; letter-spacing: .09em; }
.chapter-context { font-size: .7rem; letter-spacing: .15em; }
.utility-nav a { min-height: 44px; display: inline-flex; align-items: center; }
.review-banner { border-bottom: 1px solid var(--museum-gilt-line); }
h1, h2, h3 { font-family: Baskerville, "Iowan Old Style", Georgia, serif; }
.credit { opacity: 1; font-size: .75rem; line-height: 1.55; }
.button { border-radius: 2px; letter-spacing: .07em; }
.button-primary { box-shadow: inset 0 0 0 3px var(--maroon-800), inset 0 0 0 4px rgba(205,191,159,.5); }
.button-primary:hover { box-shadow: inset 0 0 0 3px var(--maroon-700), inset 0 0 0 4px var(--paper-3); }
:focus-visible { outline: 3px solid var(--paper); outline-offset: 1px; box-shadow: 0 0 0 5px var(--maroon-800); }
.button:focus-visible, .text-action:focus-visible { outline-offset: 1px; box-shadow: 0 0 0 5px var(--maroon-800); }
.button-secondary { border: 1px solid var(--museum-brass-ink); box-shadow: inset 0 0 0 3px var(--paper), inset 0 0 0 4px rgba(81,71,62,.22); }

/* Entrance salon: architectural paneling surrounds the original object. */
#map .map-hero {
  position: relative;
  isolation: isolate;
  overflow: visible;
  min-height: 0;
  padding: 72px max(50px, calc((100vw - 1360px) / 2));
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.03fr);
  align-items: center;
  gap: clamp(48px, 7vw, 110px);
  background: var(--museum-wall);
  border-block: 8px ridge var(--maroon-700);
  box-shadow: inset 0 0 0 2px var(--maroon-950), inset 0 0 0 4px var(--museum-gilt-line);
}
#map .map-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 22px;
  border: 1px solid var(--museum-gilt-line);
  outline: 1px solid rgba(205,191,159,.12);
  outline-offset: 6px;
  pointer-events: none;
}
#map .map-copy { padding-block: 28px; }
#map .map-copy::before {
  content: "";
  display: block;
  width: 66px;
  height: 10px;
  border-block: 1px solid var(--paper-3);
  margin-bottom: 36px;
  background: linear-gradient(90deg, transparent 44%, var(--paper-3) 45% 55%, transparent 56%) center / 100% 4px no-repeat;
}
#map .map-copy .eyebrow { color: var(--paper-3); max-width: 32em; line-height: 1.65; font-size: .67rem; letter-spacing: .17em; }
#map h1 { font-size: clamp(3.15rem, 5.4vw, 6.3rem); line-height: 1.01; letter-spacing: -.025em; text-wrap: balance; }
#map .map-copy .lede { max-width: 32em; padding-top: 24px; border-top: 1px solid var(--museum-gilt-line); font-size: clamp(1.14rem, 1.5vw, 1.45rem); color: var(--paper-2); }
#map .orientation-object { display: block; width: 100%; min-width: 0; }
#map .orientation-stage {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
  padding: 20px;
  border: 8px ridge var(--maroon-700);
  outline: 1px solid var(--museum-gilt-line);
  background: var(--maroon-950);
  box-shadow: inset 0 0 0 1px var(--paper-3), 0 28px 38px rgba(0,0,0,.35);
  transform: rotate(-.65deg);
  transition: transform .3s ease, box-shadow .3s ease;
}
#map .orientation-stage::before { content: none; }
#map .orientation-stage img {
  width: 100%; height: auto; max-width: 100%;
  object-fit: contain; filter: none; transform: none;
  padding: 18px; transition: padding .3s ease;
}
#map .orientation-stage.is-close img { padding: 0; transform: none; }
#map .orientation-stage:focus-within {
  transform: translateY(-4px) rotate(0);
  box-shadow: inset 0 0 0 1px var(--paper-3), 0 34px 42px rgba(0,0,0,.42);
}
#map .film-status {
  position: static; order: -1; width: 100%;
  padding-bottom: 10px; border-bottom: 1px solid var(--museum-gilt-line);
  color: var(--paper-3); font-size: .61rem; letter-spacing: .09em; line-height: 1.6;
}
#map .look-control {
  position: static; align-self: flex-end;
  color: var(--paper); background: var(--maroon-800);
  border: 1px solid var(--paper-3); min-height: 44px;
  font-family: var(--serif); font-size: .95rem;
}
#map .orientation-object > .object-label {
  position: relative;
  width: 92%; margin: 30px auto 0; padding: 20px 24px;
  background: var(--paper); color: var(--ink);
  border: 1px solid var(--paper-3);
  outline: 1px solid rgba(27,23,19,.35); outline-offset: -6px;
  box-shadow: 0 10px 25px rgba(0,0,0,.2);
  font-size: .8rem;
}
#map .orientation-object .object-marker { color: var(--maroon-700); }
#map .orientation-object .credit { color: var(--ink-soft); }
#map .orientation-object .object-label h2 { font-size: 1.55rem; }
#map .orientation-object .object-label dl div { border-color: var(--line); }
#map .orientation-object .object-label p:last-child { margin-bottom: 0; }

/* A reading table and its catalog drawers carry the recommended sequence. */
#map .threshold { padding: 66px 40px; gap: 48px; }
#map .threshold h2 { font-size: clamp(2.3rem, 3.6vw, 4rem); line-height: 1.08; }
#map .threshold .eyebrow { color: var(--maroon-700); }
#map .exhibit-rail {
  max-width: none; padding: 66px max(40px, calc((100vw - 1360px) / 2)) 80px;
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px;
  background: linear-gradient(90deg, rgba(81,71,62,.045), transparent 15% 85%, rgba(81,71,62,.045)), var(--paper-2);
  border-block: 6px double rgba(81,71,62,.35);
}
#map .section-heading { grid-column: 1 / -1; display: block; margin-bottom: 10px; }
#map .section-heading .eyebrow { color: var(--maroon-700); }
#map .section-heading h2 { font-size: clamp(2rem, 3.5vw, 3.7rem); }
#map .exhibit-card {
  display: flex; flex-direction: column; gap: 30px;
  padding: 26px; color: var(--ink); background: var(--paper);
  border: 1px solid var(--museum-brass-ink); border-top: 6px solid var(--maroon-800);
  box-shadow: inset 0 0 0 5px var(--paper), inset 0 0 0 6px rgba(81,71,62,.24), 3px 5px 0 rgba(81,71,62,.12);
}
#map .exhibit-number {
  width: 74px; padding: 9px 0 6px; font-size: 2.4rem; text-align: center;
  border: 3px double var(--museum-brass-ink);
  background: linear-gradient(125deg, var(--paper), var(--paper-3));
  color: var(--maroon-900);
}
#map .exhibit-card > div:last-child { display: flex; flex-direction: column; gap: 16px; flex: 1; }
#map .exhibit-card .card-kicker { min-height: 2.8em; color: var(--maroon-700); font-size: .61rem; }
#map .exhibit-card h3 { font-size: clamp(1.75rem,2.5vw,2.5rem); line-height: 1.05; }
#map .exhibit-card p { font-size: .93rem; }
#map .exhibit-card .text-action { margin-top: auto; align-self: stretch; min-height: 44px; text-align: left; font-size: .68rem; }
.installation-guide {
  background: var(--museum-wall);
  border-block: 7px ridge var(--maroon-700);
  box-shadow: inset 0 0 0 1px var(--museum-gilt-line);
}
.installation-guide h2 { line-height: 1.08; }
.guide-status { border: 3px double var(--museum-brass); box-shadow: inset 0 0 0 7px var(--maroon-950); padding: 28px; background: var(--maroon-950); }
.guide-status .text-action { min-height: 44px; text-align: left; margin-top: 12px; }

/* Gallery lintels and the room index belong to the same building. */
#gallery :is(.foundation-arrival, .tools-arrival) {
  position: relative;
  background: var(--museum-wall);
  border-block: 6px ridge var(--maroon-700);
  box-shadow: inset 0 0 0 1px var(--museum-gilt-line);
}
#gallery :is(.foundation-arrival, .tools-arrival)::before {
  content: ""; position: absolute; inset: 14px;
  border: 1px solid var(--museum-gilt-line); pointer-events: none;
}
#gallery :is(.foundation-arrival, .tools-arrival) .eyebrow { color: var(--paper-3); }
#gallery :is(.foundation-arrival, .tools-arrival) :is(h1, h2) { line-height: 1.06; }
#gallery .foundation-rail {
  border-right: 3px double var(--paper-3);
  background: var(--paper-2);
  box-shadow: inset -5px 0 0 var(--paper);
}
#gallery .foundation-rail a.is-current { background: var(--paper); border-color: var(--maroon-800); }
#gallery .learning-passage { background: var(--paper-2); border-block: 4px double var(--paper-3); }
#gallery .learning-passage .eyebrow { color: var(--maroon-700); }

/* Numbered case folios: keep all diagnostic identities out of this hall. */
#cases .case-threshold {
  position: relative; background: var(--museum-wall);
  border-bottom: 8px ridge var(--maroon-700);
  box-shadow: inset 0 0 0 1px var(--museum-gilt-line);
  padding-block: 64px;
}
#cases .case-threshold h1 { font-size: clamp(3rem, 5.8vw, 6rem); line-height: 1.02; max-width: 1000px; }
#cases .case-threshold .eyebrow { color: var(--paper-3); }
#cases .case-door-hall {
  display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 32px;
  max-width: 1360px; margin: 0 auto; padding: 64px 40px 80px;
}
#cases .case-door {
  position: relative; display: grid; grid-template-columns: 66px minmax(0,1fr);
  gap: 22px; padding: 32px 30px 30px;
  border: 1px solid var(--paper-3); border-left: 16px solid var(--maroon-800);
  background: var(--paper-2);
  box-shadow: inset 4px 0 0 var(--paper-3), inset 8px 0 0 var(--maroon-800), 0 3px 0 var(--paper-3), 0 8px 0 var(--paper), 0 9px 0 var(--paper-3), 0 15px 24px rgba(27,23,19,.13);
  align-items: start;
}
#cases .case-door-number {
  font-size: 2.2rem; line-height: 1; letter-spacing: 0;
  padding: 10px 0; text-align: center;
  color: var(--maroon-900); border: 3px double var(--museum-brass-ink);
  background: linear-gradient(130deg,var(--paper),var(--paper-3));
}
#cases .case-door .eyebrow { color: var(--maroon-700); font-size: .63rem; }
#cases .case-door h2 { font-size: clamp(2.1rem,3.3vw,3.2rem); }
#cases .case-door .button { grid-column: 2; justify-self: stretch; text-align: left; font-size: .73rem; }
#cases .case-door p:not(.eyebrow) { font-size: .95rem; }
#cases .case-status { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 18px; color: var(--ink-soft); }
.exit-passage { border-block: 3px double var(--paper-3); background: var(--paper); }
.pac-footer { background: var(--maroon-950); color: var(--paper); border-top: 1px solid var(--museum-gilt-line); }

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  #map .orientation-stage:hover { transform: translateY(-4px) rotate(0); box-shadow: inset 0 0 0 1px var(--paper-3), 0 34px 42px rgba(0,0,0,.42); }
}
@media (max-width: 1024px) {
  #map .map-hero { padding: 58px 40px; gap: 40px; }
  #map h1 { font-size: clamp(3rem,5.6vw,4.5rem); }
  #map .threshold { grid-template-columns: 1fr; gap: 26px; }
  #map .exhibit-rail { gap: 20px; padding-inline: 32px; }
  #map .exhibit-card { padding: 22px; }
  #map .exhibit-card .card-kicker { min-height: 4.2em; }
  #cases .case-door-hall { gap: 24px; padding-inline: 28px; }
  #cases .case-door { padding: 26px 22px; grid-template-columns: 54px minmax(0,1fr); gap: 18px; }
}
@media (max-width: 820px) {
  #gallery .foundation-rail { border-right: 0; border-bottom: 3px double var(--paper-3); box-shadow: none; }
  #map .map-hero { grid-template-columns: minmax(0,1fr); padding: 44px 36px 52px; gap: 18px; }
  #map .map-copy { padding-block: 10px; }
  #map .map-copy::before { margin-bottom: 24px; }
  #map h1 { font-size: clamp(2.8rem,8vw,4.4rem); max-width: 680px; }
  #map .map-copy .lede { max-width: 36em; }
  #map .orientation-object { max-width: 540px; margin: 20px auto 0; }
  #map .exhibit-rail { grid-template-columns: minmax(0,1fr); }
  #map .exhibit-card { display: grid; grid-template-columns: 74px minmax(0,1fr); }
  #map .exhibit-card .card-kicker { min-height: 0; }
  #map .exhibit-card h3, #map .exhibit-card p, #map .exhibit-card .text-action { margin-bottom: 0; }
  #map .threshold { padding: 48px 28px; }
  #cases .case-threshold { padding: 46px 28px; }
  #cases .case-door-hall { grid-template-columns: minmax(0,1fr); max-width: 640px; }
}
@media (max-width: 520px) {
  .pac-rail { min-height: 62px; padding-inline: 16px; gap: 12px; }
  .pac-mark { font-size: .95rem; }
  .utility-nav { gap: 12px; }
  .utility-nav a { font-size: .73rem; }
  .review-banner { padding: 8px 16px; }
  #map .map-hero { padding: 36px 24px 44px; }
  #map .map-hero::before { inset: 10px; outline: none; }
  #map .map-copy .eyebrow { font-size: .6rem; }
  #map h1 { font-size: clamp(2.5rem,10.4vw,3.7rem); }
  #map h1 br { display: none; }
  #map .orientation-stage { padding: 12px; border-width: 6px; transform: none; }
  #map .orientation-stage img { padding: 10px; }
  #map .orientation-object > .object-label { width: 100%; padding: 20px; margin-top: 20px; }
  #map .threshold, #map .exhibit-rail { padding: 44px 24px; }
  #map .exhibit-card { display: flex; gap: 22px; padding: 24px; }
  #cases .case-threshold { padding: 40px 24px; }
  #cases .case-door-hall { padding: 40px 20px 56px; }
  #cases .case-door { grid-template-columns: 1fr; padding: 26px; }
  #cases .case-door-number { width: 66px; }
  #cases .case-door .button { grid-column: 1; }
  .installation-guide { padding-inline: 24px; }
  .guide-status { min-width: 0; padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  #map .orientation-stage, #map .orientation-stage img { transition: none; transform: none; }
  #map .orientation-stage:focus-within { transform: none; }
}
#cases .case-door-pending .button:disabled { opacity:1; color:#705e49; background:#e7dcc4; border-color:#b9a787; cursor:default; box-shadow:none; transform:none; }
#cases .case-door-pending .case-status { color:#725337; letter-spacing:.08em; }