:root {
  --ink: #17130e;
  --ink-soft: #2c261d;
  --paper: #efe6d3;
  --paper-aged: #e2d3b4;
  --paper-deep: #cdbb95;
  --rubric: #b5342a;
  --rubric-deep: #8c251c;
  --brass: #a8843c;
  --brass-soft: #c9a86a;
  --cool: #9fc4cf;
  --display: "Didot", "Bodoni 72", "Playfair Display", "Georgia", serif;
  --body: "Iowan Old Style", "Palatino Linotype", "Palatino", "Georgia", serif;
  --label: "Futura", "Avenir Next", "Century Gothic", "Trebuchet MS", sans-serif;
  --shadow-paper: 0 1px 0 rgba(255, 250, 235, 0.5) inset, 0 -1px 0 rgba(60, 45, 20, 0.25) inset, 0 6px 18px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  background: #0d0905;
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; }
button:focus-visible, input:focus-visible + span, label:focus-within {
  outline: 2px solid var(--rubric);
  outline-offset: 2px;
}

#gl { position: fixed; inset: 0; }
.glcanvas { display: block; width: 100%; height: 100%; touch-action: none; }

#vignette {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  background:
    radial-gradient(ellipse at 50% 46%, transparent 52%, rgba(8, 5, 2, 0.34) 88%, rgba(5, 3, 1, 0.62) 100%);
  mix-blend-mode: multiply;
}

#letterbox .lbar {
  position: fixed; left: 0; right: 0; height: 0; background: #050302;
  z-index: 3; transition: height 0.9s cubic-bezier(0.6, 0, 0.2, 1); pointer-events: none;
}
#letterbox .lbar.top { top: 0; }
#letterbox .lbar.bot { bottom: 0; }
body.touring #letterbox .lbar { height: clamp(28px, 6vh, 72px); }

/* ---------- masthead ---------- */
#masthead {
  position: fixed; top: 18px; left: 22px; z-index: 10;
  color: var(--paper);
  text-shadow: 0 1px 3px rgba(0,0,0,0.8);
  pointer-events: none;
  transition: opacity 0.6s;
}
.mast-kicker {
  font-family: var(--label);
  font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--brass-soft);
}
.mast-title {
  font-family: var(--display);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700; letter-spacing: 0.04em;
  line-height: 1;
  margin: 4px 0 5px;
}
.mast-title::first-letter { color: var(--rubric); }
.mast-sub {
  font-family: var(--label);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(239, 230, 211, 0.82);
  border-top: 1px solid rgba(201, 168, 106, 0.4);
  padding-top: 5px;
  max-width: 320px;
}

/* ---------- topbar ---------- */
#topbar { position: fixed; top: 16px; right: 18px; z-index: 12; display: flex; gap: 8px; }
.iconbtn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  color: var(--ink);
  background: linear-gradient(175deg, var(--paper), var(--paper-aged));
  border: 1px solid rgba(23, 19, 14, 0.55);
  border-radius: 4px;
  box-shadow: var(--shadow-paper);
  font-family: var(--label); font-size: 15px; font-weight: 700;
  transition: transform 0.15s;
}
.iconbtn:hover { transform: translateY(-1px); }
.iconbtn.off { color: rgba(23,19,14,0.4); }
.iconbtn.off .waves { opacity: 0.25; }

/* ---------- settings popover ---------- */
.popover {
  position: fixed; top: 62px; right: 18px; z-index: 14;
  width: 250px; padding: 14px 14px 10px;
  background: linear-gradient(178deg, var(--paper), var(--paper-aged));
  border: 1px solid rgba(23,19,14,0.6); border-radius: 4px;
  box-shadow: var(--shadow-paper);
}
.pop-title {
  font-family: var(--label); font-size: 10px; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--rubric-deep);
  border-bottom: 1px solid rgba(23,19,14,0.25);
  padding-bottom: 7px; margin-bottom: 8px;
}
.qopt { display: flex; gap: 9px; align-items: flex-start; padding: 7px 2px; cursor: pointer; }
.qopt input { margin-top: 3px; accent-color: var(--rubric); }
.qopt b { font-family: var(--display); font-size: 15px; display: block; }
.qopt i { font-style: normal; font-size: 11.5px; color: var(--ink-soft); }

/* ---------- era rail ---------- */
#rail {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%);
  z-index: 11; display: flex; gap: 6px; align-items: stretch;
  padding: 6px;
  background: rgba(14, 10, 6, 0.72);
  border: 1px solid rgba(201, 168, 106, 0.28);
  border-radius: 5px;
  backdrop-filter: blur(4px);
}
.era-tab {
  display: flex; flex-direction: column; align-items: flex-start; gap: 1px;
  padding: 7px 13px 6px;
  background: linear-gradient(180deg, #3a332a, #241f18 60%, #1a1610);
  border: 1px solid rgba(0,0,0,0.7);
  border-top-color: rgba(201,168,106,0.35);
  border-radius: 3px;
  color: var(--paper-deep);
  box-shadow: 0 2px 5px rgba(0,0,0,0.5), 0 1px 0 rgba(255,240,210,0.08) inset;
  transition: transform 0.18s, color 0.18s, background 0.3s;
}
.era-tab:hover { transform: translateY(-2px); color: var(--paper); }
.era-tab.active {
  background: linear-gradient(180deg, #6e2c22, #4a1c14 70%);
  color: var(--paper);
  border-top-color: rgba(255, 200, 170, 0.5);
}
.tab-year { font-family: var(--display); font-size: 16px; font-weight: 700; letter-spacing: 0.02em; }
.tab-title { font-family: var(--label); font-size: 8.5px; letter-spacing: 0.18em; text-transform: uppercase; opacity: 0.85; }
.tourbtn {
  align-self: center;
  margin-left: 6px; padding: 9px 15px;
  font-family: var(--label); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--paper);
  background: linear-gradient(180deg, var(--rubric), var(--rubric-deep));
  border: 1px solid rgba(0,0,0,0.6);
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5), 0 1px 0 rgba(255,220,200,0.25) inset;
  transition: transform 0.15s, filter 0.2s;
}
.tourbtn:hover { transform: translateY(-1px); filter: brightness(1.1); }

/* ---------- chips ---------- */
#chips {
  position: fixed; right: 20px; bottom: 86px; z-index: 11;
  display: flex; flex-direction: column; align-items: flex-end; gap: 8px;
}
.chip {
  padding: 10px 16px;
  font-family: var(--label); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink);
  background: linear-gradient(178deg, var(--paper), var(--paper-aged));
  border: 1px solid rgba(23,19,14,0.6);
  border-left: 4px solid var(--rubric);
  border-radius: 3px;
  box-shadow: var(--shadow-paper);
  transition: transform 0.15s, opacity 0.3s;
}
.chip:hover { transform: translateX(-3px); }
.chip.busy { opacity: 0.55; pointer-events: none; }

/* ---------- caption ---------- */
#caption {
  position: fixed; left: 50%; bottom: 92px; transform: translate(-50%, 14px);
  z-index: 10; width: min(680px, 86vw);
  opacity: 0; pointer-events: none;
  transition: opacity 0.7s, transform 0.7s;
}
#caption.show { opacity: 1; transform: translate(-50%, 0); }
#caption p {
  padding: 15px 24px 16px;
  font-family: var(--body);
  font-size: clamp(14.5px, 1.5vw, 17.5px);
  font-style: italic;
  line-height: 1.5;
  color: var(--ink);
  text-align: center;
  background: linear-gradient(178deg, rgba(239,230,211,0.96), rgba(226,211,180,0.96));
  border: 1px solid rgba(23,19,14,0.55);
  border-top: 3px double var(--rubric);
  border-radius: 3px;
  box-shadow: var(--shadow-paper);
}

/* ---------- hotspots ---------- */
#hotspots { position: fixed; inset: 0; z-index: 8; pointer-events: none; overflow: hidden; }
#hotspots.disabled .hotspot { display: none !important; }
.hotspot {
  position: absolute; left: 0; top: 0;
  width: 34px; height: 34px;
  pointer-events: auto;
  display: grid; place-items: center;
  background: radial-gradient(circle at 38% 32%, #f7efdd, var(--paper-aged) 68%);
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.55), 0 0 0 2px rgba(239,230,211,0.12);
  transition: opacity 0.3s;
  will-change: transform;
}
.hs-glyph {
  font-family: var(--display); font-size: 12.5px; font-weight: 700;
  color: var(--rubric-deep); line-height: 1;
}
.hs-ring {
  position: absolute; inset: -7px;
  border: 1px solid rgba(239,230,211,0.5);
  border-radius: 50%;
}
.hotspot:hover, .hotspot.hover { transform-origin: center; }
.hotspot:hover .hs-ring, .hotspot.active .hs-ring { border-color: var(--rubric); }
.hotspot.active { background: radial-gradient(circle at 38% 32%, #f2d9c8, #d9b09a 70%); }
.hotspot.pulse .hs-ring { animation: ringPulse 2.4s ease-out infinite; }
@keyframes ringPulse {
  0% { transform: scale(0.7); opacity: 0.9; }
  70% { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ---------- drawer ---------- */
#drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 13;
  width: min(390px, 92vw);
  padding: 66px 30px 30px 34px;
  overflow-y: auto;
  background:
    repeating-linear-gradient(0deg, rgba(120,95,55,0.045) 0 2px, transparent 2px 5px),
    linear-gradient(178deg, var(--paper) 0%, var(--paper-aged) 100%);
  border-left: 1px solid rgba(23,19,14,0.65);
  box-shadow: -14px 0 40px rgba(0,0,0,0.5);
  transform: translateX(105%);
  transition: transform 0.5s cubic-bezier(0.32, 0.72, 0.22, 1);
}
#drawer.open { transform: translateX(0); }
#drawerClose {
  position: absolute; top: 14px; right: 14px;
  width: 34px; height: 34px;
  font-size: 20px; line-height: 1;
  color: var(--ink);
  background: transparent;
  border: 1px solid rgba(23,19,14,0.45);
  border-radius: 3px;
}
#drawerClose:hover { background: rgba(181,52,42,0.12); }
.drawer-rule { height: 4px; border-top: 1px solid var(--ink); border-bottom: 3px double var(--rubric); margin-bottom: 22px; }
.drawer-glyph {
  float: left;
  width: 52px; height: 52px; margin: 2px 16px 6px 0;
  display: grid; place-items: center;
  font-family: var(--display); font-size: 24px; font-weight: 700;
  color: var(--paper);
  background: linear-gradient(165deg, var(--rubric), var(--rubric-deep));
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.35), 0 1px 0 rgba(255,220,200,0.3) inset;
}
#drawerTitle {
  font-family: var(--display);
  font-size: 24px; font-weight: 700; line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: 18px;
}
.drawer-sec { margin-top: 16px; }
.drawer-sec h3 {
  font-family: var(--label);
  font-size: 10px; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--rubric-deep);
  border-bottom: 1px solid rgba(23,19,14,0.3);
  padding-bottom: 5px; margin-bottom: 9px;
}
.drawer-sec p { font-size: 15px; line-height: 1.62; color: var(--ink-soft); }
.drawer-sec p::first-letter { font-family: var(--display); font-size: 1.35em; color: var(--rubric-deep); }

/* ---------- pause chip ---------- */
#pauseChip {
  position: fixed; left: 50%; top: 20px; transform: translateX(-50%); z-index: 15;
}
#btnResume {
  padding: 11px 22px;
  font-family: var(--label); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--paper);
  background: linear-gradient(180deg, #3a332a, #1f1a13);
  border: 1px solid rgba(201,168,106,0.45);
  border-radius: 4px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.6);
}
#btnResume:hover { filter: brightness(1.25); }

/* ---------- gate ---------- */
#gate {
  position: fixed; inset: 0; z-index: 30;
  display: grid; place-items: center;
  overflow-y: auto;
  background:
    repeating-linear-gradient(0deg, rgba(90, 70, 40, 0.045) 0 2px, transparent 2px 6px),
    repeating-linear-gradient(90deg, rgba(90, 70, 40, 0.028) 0 3px, transparent 3px 9px),
    #ecdfc2;
  transition: opacity 1.1s ease, visibility 1.1s;
}
#gate.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.gate-inner {
  max-width: 640px;
  margin: 24px;
  padding: 52px 58px 44px;
  text-align: center;
  border: 2px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 5px;
  background: rgba(239, 230, 211, 0.35);
  box-shadow: 0 24px 70px rgba(20, 12, 4, 0.35);
}
.gate-fleuron { font-size: 30px; color: var(--rubric); line-height: 1; margin-bottom: 14px; }
.gate-kicker {
  font-family: var(--label); font-size: 11px; letter-spacing: 0.32em;
  text-transform: uppercase; color: var(--ink-soft);
  margin-bottom: 16px;
}
.gate-title {
  font-family: var(--display);
  font-size: clamp(58px, 10vw, 96px);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 0.95;
  color: var(--ink);
  text-shadow: 0 1px 0 rgba(255,250,235,0.6), 0 -1px 1px rgba(60,40,10,0.4);
}
.gate-title::first-letter { color: var(--rubric); }
.gate-rule {
  width: 62%; height: 5px; margin: 20px auto 18px;
  border-top: 1px solid var(--ink);
  border-bottom: 3px double var(--rubric);
}
.gate-sub {
  font-size: clamp(15px, 1.7vw, 17.5px);
  font-style: italic; line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 26px;
}
.gate-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 22px; }
.btn-primary {
  padding: 14px 26px;
  font-family: var(--label); font-size: 12px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--paper);
  background: linear-gradient(180deg, var(--rubric), var(--rubric-deep));
  border: 1px solid var(--ink);
  border-radius: 3px;
  box-shadow: 0 3px 0 var(--ink), 0 8px 18px rgba(140, 37, 28, 0.35), 0 1px 0 rgba(255,220,200,0.3) inset;
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 0 var(--ink), 0 12px 22px rgba(140,37,28,0.4), 0 1px 0 rgba(255,220,200,0.3) inset; }
.btn-primary:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--ink); }
.btn-ghost {
  padding: 14px 24px;
  font-family: var(--label); font-size: 12px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  transition: background 0.2s;
}
.btn-ghost:hover { background: rgba(23,19,14,0.08); }
.gate-note {
  font-family: var(--label); font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: rgba(44,38,29,0.75);
  line-height: 1.8;
}

/* ---------- loading ---------- */
#loading {
  position: fixed; inset: 0; z-index: 40;
  display: grid; place-items: center;
  background: linear-gradient(172deg, #17130e, #0d0905);
  color: var(--paper);
  transition: opacity 0.6s;
}
#loading.hidden { opacity: 0; pointer-events: none; }
.loading-inner { text-align: center; width: min(340px, 80vw); }
.loading-fleuron { font-size: 26px; color: var(--rubric); margin-bottom: 10px; }
.loading-title { font-family: var(--display); font-size: 26px; letter-spacing: 0.06em; margin-bottom: 18px; }
.loading-bar {
  height: 8px; background: rgba(239,230,211,0.14);
  border: 1px solid rgba(201,168,106,0.4); border-radius: 2px; overflow: hidden;
}
#loadingFill {
  height: 100%; width: 4%;
  background: linear-gradient(90deg, var(--rubric-deep), var(--rubric));
  transition: width 0.35s ease;
}
#loadingStep {
  margin-top: 12px;
  font-family: var(--label); font-size: 10.5px; letter-spacing: 0.22em;
  text-transform: uppercase; color: rgba(239,230,211,0.66);
}

/* ---------- modals ---------- */
#helpModal, #contextLost {
  position: fixed; inset: 0; z-index: 50;
  display: grid; place-items: center;
  background: rgba(10, 7, 3, 0.66);
  backdrop-filter: blur(3px);
}
.modal-card {
  position: relative;
  width: min(520px, 90vw);
  max-height: 82vh; overflow-y: auto;
  padding: 34px 36px 30px;
  background: linear-gradient(178deg, var(--paper), var(--paper-aged));
  border: 1px solid rgba(23,19,14,0.65);
  border-top: 4px double var(--rubric);
  border-radius: 4px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}
.modal-card h2 { font-family: var(--display); font-size: 27px; margin-bottom: 16px; }
.modal-card dl { display: grid; grid-template-columns: auto 1fr; gap: 9px 18px; }
.modal-card dt { font-family: var(--label); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--rubric-deep); padding-top: 3px; white-space: nowrap; }
.modal-card dd { font-size: 14.5px; line-height: 1.55; color: var(--ink-soft); }
#helpClose {
  position: absolute; top: 12px; right: 12px;
  width: 32px; height: 32px; font-size: 19px;
  background: transparent; border: 1px solid rgba(23,19,14,0.45); border-radius: 3px;
}

/* ---------- fallback ---------- */
#fallback {
  position: fixed; inset: 0; z-index: 60; overflow-y: auto;
  background: linear-gradient(172deg, #f2e9d6, #dcc9a4);
}
.fallback-page {
  max-width: 660px; margin: 0 auto; padding: 64px 28px 90px;
}
.fallback-page h1 { font-family: var(--display); font-size: 56px; text-align: center; margin: 8px 0 20px; }
.fallback-page h1::first-letter { color: var(--rubric); }
.fb-lead { font-style: italic; font-size: 16.5px; line-height: 1.6; border-top: 1px solid var(--ink); border-bottom: 3px double var(--rubric); padding: 16px 0; margin-bottom: 26px; }
.fallback-page section { margin-bottom: 24px; }
.fallback-page h2 { font-family: var(--display); font-size: 22px; color: var(--rubric-deep); margin-bottom: 8px; }
.fallback-page p { font-size: 15.5px; line-height: 1.68; color: var(--ink-soft); }
.fb-end { margin-top: 30px; font-family: var(--label); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; text-align: center; }
#fallback .gate-fleuron { text-align: center; margin-bottom: 0; }

.hidden { display: none !important; }
#gate.hidden { display: grid !important; }

body.shop-dark #vignette {
  background: radial-gradient(ellipse at 50% 46%, transparent 40%, rgba(4, 3, 2, 0.5) 82%, rgba(2, 1, 0, 0.78) 100%);
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  #masthead { top: 12px; left: 16px; }
  .mast-kicker { display: none; }
  .mast-title { font-size: 22px; }
  .mast-sub { max-width: 200px; font-size: 9px; }
  #rail {
    left: 8px; right: 8px; transform: none;
    display: flex; flex-wrap: wrap; justify-content: center;
    bottom: 10px; gap: 4px; padding: 5px;
  }
  .era-tab { padding: 5px 9px 4px; flex: 0 0 auto; }
  .tab-year { font-size: 12.5px; }
  .tab-title { display: none; }
  .tourbtn { flex: 1 1 100%; margin-left: 0; padding: 8px 10px; }
  #chips { right: 10px; bottom: 104px; }
  .chip { padding: 9px 12px; font-size: 10px; }
  #caption { bottom: 108px; }
  #drawer { top: auto; left: 0; right: 0; width: 100%; max-height: 62vh; border-left: none; border-top: 1px solid rgba(23,19,14,0.65); transform: translateY(105%); }
  #drawer.open { transform: translateY(0); }
  .gate-inner { padding: 36px 24px 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .hotspot.pulse .hs-ring { animation: none; }
  #caption, #drawer, #gate { transition-duration: 0.01s; }
}