:root {
  color-scheme: dark;
  --charcoal: #171714;
  --charcoal-soft: #1e1e1a;
  --plaster: #e7e0d4;
  --limestone: #bdb4a4;
  --taupe: #8d8374;
  --bronze: #ae8761;
  --line: rgba(231, 224, 212, 0.16);
  --glass: rgba(24, 24, 21, 0.82);
  --serif: "Playfair Display", Georgia, serif;
  --sans: "DM Sans", system-ui, sans-serif;
  --mono: "DM Mono", monospace;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: var(--charcoal); }
body { color: var(--plaster); font-family: var(--sans); }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }

.skip-link {
  position: fixed; z-index: 100; left: 1rem; top: -4rem; padding: .7rem 1rem;
  background: var(--plaster); color: var(--charcoal); border-radius: 2px;
}
.skip-link:focus { top: 1rem; }
.visually-hidden {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important;
}

.atlas-world { position: relative; width: 100%; height: 100%; min-height: 100svh; isolation: isolate; }
#space-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; display: block;
  cursor: grab; touch-action: none; outline: none;
}
#space-canvas.is-dragging { cursor: grabbing; }

.atlas-header {
  position: absolute; z-index: 20; left: 0; right: 0; top: 0;
  height: 78px; padding: max(16px, env(safe-area-inset-top)) 24px 12px;
  display: grid; grid-template-columns: 1fr minmax(280px, 520px) 1fr; align-items: center; gap: 22px;
  pointer-events: none;
}
.atlas-header::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to bottom, rgba(23,23,20,.96), rgba(23,23,20,.62) 70%, transparent);
}
.atlas-header > * { pointer-events: auto; }
.wordmark { color: var(--plaster); text-decoration: none; display: flex; align-items: center; gap: 10px; width: max-content; font-size: 13px; letter-spacing: .02em; }
.wordmark-seal {
  width: 30px; height: 30px; border: 1px solid rgba(231,224,212,.35); display: grid; place-items: center;
  font-family: var(--serif); font-size: 11px; color: var(--limestone); transform: rotate(45deg);
}
.wordmark-seal::first-line { transform: rotate(-45deg); }

.search-shell { position: relative; }
.search-shell input {
  width: 100%; height: 44px; padding: 0 48px 0 43px; border: 1px solid rgba(231,224,212,.2);
  border-radius: 2px; outline: none; background: rgba(34,34,30,.78); color: var(--plaster);
  box-shadow: 0 14px 40px rgba(0,0,0,.2); backdrop-filter: blur(16px);
  transition: border-color .2s, background .2s;
}
.search-shell input::placeholder { color: rgba(231,224,212,.5); }
.search-shell input:focus { border-color: rgba(174,135,97,.76); background: rgba(39,38,33,.95); }
.search-glyph { position: absolute; z-index: 2; left: 17px; top: 14px; width: 14px; height: 14px; border: 1px solid var(--limestone); border-radius: 50%; opacity: .7; }
.search-glyph::after { content: ""; position: absolute; width: 6px; height: 1px; background: var(--limestone); transform: rotate(45deg); right: -5px; bottom: -2px; }
.search-shell kbd { position: absolute; right: 13px; top: 12px; color: var(--taupe); border: 1px solid rgba(231,224,212,.14); border-radius: 2px; padding: 2px 7px; font: 11px var(--mono); }
.search-results {
  display: none; position: absolute; left: 0; right: 0; top: calc(100% + 7px); max-height: min(62vh, 520px);
  overflow: auto; background: rgba(27,27,24,.97); border: 1px solid rgba(231,224,212,.18);
  box-shadow: 0 24px 70px rgba(0,0,0,.55); backdrop-filter: blur(20px);
}
.search-results.is-open { display: block; }
.search-result {
  width: 100%; text-align: left; border: 0; border-bottom: 1px solid rgba(231,224,212,.08);
  background: transparent; padding: 13px 16px; cursor: pointer; display: grid; gap: 3px;
}
.search-result:last-child { border-bottom: 0; }
.search-result:hover, .search-result:focus-visible { background: rgba(174,135,97,.12); outline: none; }
.search-result strong { font-size: 14px; font-weight: 500; }
.search-result span { color: var(--taupe); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
.search-empty { padding: 18px; color: var(--taupe); font-size: 13px; }

.header-links { justify-self: end; display: flex; gap: 20px; }
.header-links a { color: var(--limestone); text-decoration: none; font-size: 12px; letter-spacing: .04em; }
.header-links a:hover, .header-links a:focus-visible { color: var(--plaster); }

.scene-copy {
  position: absolute; z-index: 5; top: 105px; left: clamp(28px, 5vw, 78px);
  width: min(470px, calc(100vw - 56px)); pointer-events: none;
  transition: opacity .2s ease;
}
.eyebrow { margin: 0 0 10px; color: var(--bronze); font: 10px var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.scene-copy h1 { margin: 0; font: 500 clamp(40px, 5vw, 76px)/.95 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.scene-copy h1 em { font-weight: 500; color: var(--limestone); }
.scene-copy > p:last-of-type { max-width: 430px; margin: 18px 0 0; color: rgba(231,224,212,.64); font-size: 13px; line-height: 1.55; }
.depth-toggle {
  width: max-content; max-width: 100%; margin-top: 16px; padding: 8px 11px; pointer-events: auto;
  border: 1px solid rgba(174,135,97,.42); background: rgba(29,29,25,.72); color: var(--limestone);
  font: 9px var(--mono); letter-spacing: .08em; text-transform: uppercase; cursor: pointer;
}
.depth-toggle:hover, .depth-toggle:focus-visible { border-color: var(--bronze); color: var(--plaster); outline: none; }
.depth-toggle[hidden] { display: none; }

.breadcrumbs {
  position: absolute; z-index: 9; left: clamp(28px, 5vw, 78px); top: 82px; display: flex; align-items: center; gap: 7px;
}
.breadcrumbs button { border: 0; background: none; padding: 4px 0; color: rgba(231,224,212,.48); cursor: pointer; font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.breadcrumbs button:hover, .breadcrumbs button:focus-visible { color: var(--plaster); outline: none; }
.breadcrumbs span { color: rgba(231,224,212,.25); font-size: 11px; }

.system-dock {
  position: absolute; z-index: 12; left: 22px; bottom: 23px; width: 210px;
  border: 1px solid rgba(231,224,212,.14); background: var(--glass); backdrop-filter: blur(16px);
  box-shadow: 0 18px 55px rgba(0,0,0,.28);
}
.dock-toggle {
  width: 100%; height: 39px; border: 0; border-bottom: 1px solid rgba(231,224,212,.1);
  padding: 0 13px; display: flex; align-items: center; justify-content: space-between;
  background: transparent; font: 10px var(--mono); letter-spacing: .14em; text-transform: uppercase; cursor: pointer;
}
.dock-toggle i { width: 6px; height: 6px; border-right: 1px solid var(--taupe); border-bottom: 1px solid var(--taupe); transform: rotate(45deg) translateY(-2px); }
.system-list { max-height: min(44vh, 380px); overflow: auto; padding: 6px; }
.system-dock:not(.is-open) .system-list,
.system-dock:not(.is-open) .domain-list { display: none; }
.system-button {
  width: 100%; border: 0; padding: 8px 8px; display: grid; grid-template-columns: 8px 1fr auto; align-items: center; gap: 9px;
  text-align: left; background: transparent; color: var(--limestone); cursor: pointer; font-size: 11px;
}
.system-button i { width: 5px; height: 5px; border: 1px solid var(--subject-color); border-radius: 50%; box-shadow: 0 0 10px var(--subject-color); }
.system-button small { color: var(--taupe); font: 9px var(--mono); }
.system-button:hover, .system-button:focus-visible, .system-button.is-active { background: rgba(231,224,212,.07); color: var(--plaster); outline: none; }
.domain-list { max-height: min(31vh, 260px); overflow: auto; border-top: 1px solid rgba(231,224,212,.1); padding: 6px; }
.domain-list:empty { display: none; }
.domain-button { width: 100%; border: 0; padding: 7px 9px 7px 22px; background: transparent; color: var(--taupe); text-align: left; font-size: 10px; line-height: 1.3; cursor: pointer; }
.domain-button:hover, .domain-button:focus-visible, .domain-button.is-active { background: rgba(231,224,212,.06); color: var(--plaster); outline: none; }

.map-controls {
  position: absolute; z-index: 11; right: 24px; bottom: 24px; display: flex;
  border: 1px solid rgba(231,224,212,.14); background: var(--glass); backdrop-filter: blur(16px);
}
.map-controls button { width: 38px; height: 38px; border: 0; border-right: 1px solid rgba(231,224,212,.1); background: transparent; cursor: pointer; color: var(--limestone); font-size: 18px; }
.map-controls button:last-child { border-right: 0; }
.map-controls button:hover, .map-controls button:focus-visible { background: rgba(231,224,212,.08); color: var(--plaster); outline: none; }

.map-legend {
  position: absolute; z-index: 5; right: 24px; top: 94px; display: flex; gap: 17px;
  color: rgba(231,224,212,.5); font: 9px var(--mono); letter-spacing: .06em; text-transform: uppercase;
}
.map-legend span { display: flex; align-items: center; gap: 7px; }
.map-legend i { width: 22px; display: block; border-top: 1px solid var(--bronze); opacity: .8; }
.map-legend i.soft-line { border-top-style: dotted; opacity: .5; }

.direction-labels {
  display: none; position: absolute; z-index: 4; left: max(22px, 5vw); right: max(22px, 5vw); top: 47%; justify-content: space-between;
  color: rgba(231,224,212,.32); font: 9px var(--mono); letter-spacing: .14em; text-transform: uppercase; pointer-events: none;
}
.direction-labels.is-visible { display: flex; }
.map-status {
  position: absolute; z-index: 7; left: 50%; bottom: 26px; transform: translateX(-50%); margin: 0;
  color: rgba(231,224,212,.5); font: 9px var(--mono); letter-spacing: .08em; text-transform: uppercase; pointer-events: none; white-space: nowrap;
}

.onboarding {
  position: absolute; z-index: 30; left: 50%; bottom: 72px; transform: translateX(-50%); display: flex; gap: 18px; align-items: center;
  padding: 12px 12px 12px 16px; border: 1px solid rgba(174,135,97,.35); background: rgba(26,26,23,.94); box-shadow: 0 18px 60px rgba(0,0,0,.45);
}
.onboarding p { margin: 0; color: var(--limestone); font-size: 11px; white-space: nowrap; }
.onboarding strong { color: var(--plaster); font-weight: 500; margin-right: 8px; }
.onboarding button { border: 1px solid rgba(231,224,212,.18); background: transparent; padding: 6px 9px; color: var(--taupe); font-size: 10px; cursor: pointer; }
.onboarding.is-hidden { display: none; }

.dossier {
  position: absolute; z-index: 18; top: 88px; right: 22px; bottom: 76px; width: min(390px, calc(100vw - 44px));
  background: rgba(29,29,25,.95); border: 1px solid rgba(231,224,212,.16); box-shadow: 0 30px 90px rgba(0,0,0,.55);
  backdrop-filter: blur(20px); transform: translateX(calc(100% + 38px)); opacity: 0; pointer-events: none;
  transition: transform .38s cubic-bezier(.2,.8,.2,1), opacity .25s;
}
.dossier.is-open { transform: translateX(0); opacity: 1; pointer-events: auto; }
.dossier-close { position: absolute; z-index: 2; right: 12px; top: 10px; width: 34px; height: 34px; border: 0; background: transparent; color: var(--taupe); font-size: 25px; cursor: pointer; }
.dossier-close:hover, .dossier-close:focus-visible { color: var(--plaster); outline: none; }
.dossier-scroll { height: 100%; overflow: auto; padding: 31px 31px 38px; }
.dossier h2 { margin: 0; padding-right: 26px; font: 500 34px/1.04 var(--serif); letter-spacing: -.025em; text-wrap: balance; }
.topic-meta { display: flex; flex-wrap: wrap; gap: 6px; padding: 17px 0 22px; border-bottom: 1px solid rgba(231,224,212,.11); }
.topic-meta:empty { display: none; }
.topic-meta span { border: 1px solid rgba(231,224,212,.13); padding: 5px 7px; color: var(--taupe); font: 9px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.dossier h3 { margin: 0; font-size: 10px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; color: var(--bronze); }
.understanding-block, .evidence-block, .relation-block { padding-top: 22px; }
.understanding-block { display: grid; gap: 20px; }
.understanding-block > div { padding-left: 13px; border-left: 1px solid rgba(174,135,97,.42); }
.understanding-block p { margin: 8px 0 0; color: var(--limestone); font-size: 12px; line-height: 1.62; }
.evidence-block ul { margin: 13px 0 0; padding: 0; list-style: none; }
.evidence-block li { position: relative; margin: 0 0 8px; padding-left: 14px; color: rgba(231,224,212,.7); font-size: 11px; line-height: 1.55; }
.evidence-block li::before { content: ""; position: absolute; left: 0; top: .58em; width: 4px; height: 4px; background: var(--bronze); transform: rotate(45deg); }
.supporting-stages { margin: 13px 0 16px; padding-left: 20px; color: var(--plaster); font-size: 11px; line-height: 1.6; }
.supporting-stages:empty { display: none; }
.supporting-stages li { margin-bottom: 4px; padding-left: 3px; }
.relation-heading { display: flex; justify-content: space-between; align-items: center; }
.relation-heading span { color: var(--taupe); font: 9px var(--mono); }
.relation-tabs { display: grid; grid-template-columns: repeat(3,1fr); margin: 13px 0 8px; border: 1px solid rgba(231,224,212,.12); }
.relation-tabs button { height: 31px; border: 0; border-right: 1px solid rgba(231,224,212,.1); background: transparent; color: var(--taupe); font-size: 10px; cursor: pointer; }
.relation-tabs button:last-child { border-right: 0; }
.relation-tabs button.is-active { background: rgba(174,135,97,.16); color: var(--plaster); }
.relation-item { width: 100%; padding: 10px 4px; border: 0; border-bottom: 1px solid rgba(231,224,212,.08); background: transparent; text-align: left; cursor: pointer; }
.relation-item:hover, .relation-item:focus-visible { background: rgba(231,224,212,.04); outline: none; }
.relation-item strong { display: block; color: var(--plaster); font-size: 11px; font-weight: 500; }
.relation-item span { display: block; margin-top: 4px; color: var(--taupe); font-size: 10px; line-height: 1.4; }
.relation-item b { color: var(--bronze); font: 8px var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-right: 6px; }
.relation-empty { color: var(--taupe); font-size: 11px; }

.node-tooltip {
  position: fixed; z-index: 40; display: none; pointer-events: none; max-width: 250px;
  padding: 8px 10px; border: 1px solid rgba(231,224,212,.16); background: rgba(20,20,18,.96);
  color: var(--limestone); box-shadow: 0 12px 36px rgba(0,0,0,.4); font-size: 10px; line-height: 1.35;
}
.node-tooltip.is-visible { display: block; }
.node-tooltip strong { display: block; color: var(--plaster); font-size: 11px; font-weight: 500; margin-bottom: 2px; }

.loading-screen { position: absolute; inset: 0; z-index: 80; display: grid; place-content: center; gap: 17px; background: var(--charcoal); text-align: center; transition: opacity .6s; }
.loading-screen.is-hidden { opacity: 0; pointer-events: none; }
.loading-screen p { margin: 0; color: var(--taupe); font: 9px var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.loading-mark { width: 26px; height: 26px; margin: auto; border: 1px solid var(--bronze); transform: rotate(45deg); animation: breathe 1.8s ease-in-out infinite; }

@keyframes breathe { 50% { opacity: .3; transform: rotate(135deg) scale(.75); } }

@media (max-width: 760px) {
  .atlas-header { height: 70px; padding: max(13px, env(safe-area-inset-top)) 14px 9px; grid-template-columns: 35px 1fr auto; gap: 10px; }
  .wordmark > span:last-child { display: none; }
  .wordmark-seal { width: 27px; height: 27px; }
  .header-links a:first-child { display: none; }
  .header-links { gap: 0; }
  .header-links a { font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
  .search-shell input { height: 39px; padding-left: 38px; padding-right: 15px; font-size: 13px; }
  .search-glyph { left: 14px; top: 12px; }
  .search-shell kbd { display: none; }
  .scene-copy { top: 103px; left: 20px; width: calc(100vw - 40px); }
  .scene-copy h1 { font-size: 42px; }
  .scene-copy > p:last-of-type { font-size: 11px; max-width: 310px; margin-top: 12px; }
  .depth-toggle { margin-top: 12px; padding: 7px 9px; font-size: 8px; }
  .breadcrumbs { top: 74px; left: 20px; }
  .map-legend { display: none; }
  .system-dock { left: 12px; bottom: calc(14px + env(safe-area-inset-bottom)); width: 170px; }
  .system-list { max-height: 42vh; }
  .map-controls { right: 12px; bottom: calc(14px + env(safe-area-inset-bottom)); }
  .map-status { bottom: 65px; font-size: 8px; max-width: 80vw; overflow: hidden; text-overflow: ellipsis; }
  .onboarding { bottom: 67px; width: calc(100vw - 24px); }
  .onboarding p { white-space: normal; line-height: 1.4; }
  .onboarding strong { display: block; }
  .atlas-world.has-dossier .scene-copy,
  .atlas-world.has-dossier .breadcrumbs,
  .atlas-world.has-dossier .map-status { opacity: 0; visibility: hidden; }
  .dossier { top: auto; left: 0; right: 0; bottom: 0; width: 100%; height: min(58svh, 540px); border-width: 1px 0 0; transform: translateY(105%); }
  .dossier.is-open { transform: translateY(0); }
  .dossier-scroll { padding: 26px 22px calc(30px + env(safe-area-inset-bottom)); }
  .dossier h2 { font-size: 30px; }
  .direction-labels { top: 42%; left: 18px; right: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}