:root {
  --obsidian: #050505;
  --carbon: #11100D;
  --gold: #C9A227;
  --molten: #F5D76E;
  --parchment: #E8D9B5;
  --bronze: #6F5420;
  --oxblood: #2A0707;
  --hard-shadow: 18px 22px 0 rgba(0, 0, 0, .78);
  --font-display: "Archivo Black", Impact, Haettenschweiler, "Arial Black", sans-serif;
  --font-serif: "DM Serif Display", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", "Space Mono", "SFMono-Regular", Consolas, monospace;
  --font-text: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--obsidian);
  color: var(--parchment);
  font-family: var(--font-text);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 82% 12%, rgba(111, 84, 32, .28), transparent 28%),
    linear-gradient(135deg, rgba(42, 7, 7, .32), transparent 38%),
    repeating-linear-gradient(90deg, rgba(245, 215, 110, .025) 0 1px, transparent 1px 12px);
  pointer-events: none;
  z-index: -3;
}

body::after {
  content: "";
  position: fixed;
  inset: -15vh -10vw;
  z-index: -2;
  pointer-events: none;
  opacity: .2;
  background:
    repeating-radial-gradient(ellipse at 25% 30%, transparent 0 28px, rgba(201, 162, 39, .18) 29px 30px, transparent 31px 58px),
    repeating-radial-gradient(ellipse at 82% 74%, transparent 0 34px, rgba(111, 84, 32, .22) 35px 36px, transparent 37px 72px);
  transform: rotate(-8deg);
}

.grain-field {
  position: fixed;
  inset: 0;
  opacity: .22;
  pointer-events: none;
  z-index: 20;
  background-image:
    repeating-radial-gradient(circle at 12% 15%, rgba(232, 217, 181, .14) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(7deg, transparent 0 9px, rgba(201, 162, 39, .06) 10px 11px);
  mix-blend-mode: overlay;
}

.vault-stage { position: relative; isolation: isolate; }

.chamber {
  min-height: 100vh;
  position: relative;
  padding: 9vw 7vw 8vw 12vw;
  border-bottom: 1px solid rgba(201, 162, 39, .28);
}

.edge-nav {
  position: fixed;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: grid;
  gap: 8px;
}

.edge-nav a {
  width: 34px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--bronze);
  border: 1px solid var(--bronze);
  background: #050505;
  text-decoration: none;
  font: 700 12px/1 var(--font-mono);
  transition: transform .28s ease, color .28s ease, border-color .28s ease, background .28s ease;
}

.edge-nav a.active, .edge-nav a:hover {
  color: var(--molten);
  border-color: var(--gold);
  background: var(--carbon);
  transform: translateX(7px);
}

.brutal-plate {
  background: linear-gradient(145deg, #15130f, var(--carbon) 52%, #070706);
  border: 1px solid rgba(201, 162, 39, .55);
  box-shadow: var(--hard-shadow);
  position: relative;
  --scroll-lift: 0px;
  --depth-glow: 0;
  transform: translateY(var(--scroll-lift));
}

.brutal-plate::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(245, 215, 110, .08);
  pointer-events: none;
  box-shadow: inset 0 0 calc(42px * var(--depth-glow)) rgba(245, 215, 110, .1);
}

.hover-lift {
  transition: transform .34s cubic-bezier(.2,.8,.2,1), box-shadow .34s ease, border-color .34s ease;
  transform-style: preserve-3d;
}

.hover-lift::after {
  content: attr(data-month);
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -11px;
  height: 11px;
  color: var(--obsidian);
  background: linear-gradient(90deg, var(--bronze), var(--molten), var(--gold));
  font: 800 9px/11px var(--font-mono);
  letter-spacing: .2em;
  text-align: right;
  opacity: .22;
  transform: translateZ(-1px);
}

.hover-lift:hover, .hover-lift.is-lifted {
  transform: translate(-4px, -9px);
  box-shadow: 25px 34px 0 rgba(0, 0, 0, .88);
  border-color: var(--molten);
}

.return-mark.is-lifted { border-color: var(--molten); }
.closing-wave.is-lifted path { stroke: var(--molten); stroke-width: 8; }

.hover-lift:hover::after, .hover-lift.is-lifted::after { opacity: .94; }

.foil-edge { overflow: hidden; }
.foil-edge::before {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 34%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(245, 215, 110, .28), transparent);
  transform: skewX(-18deg);
  transition: left .75s ease;
  pointer-events: none;
}
.foil-edge:hover::before, .foil-edge.glint::before { left: 118%; }

.roman-label, .coordinate-stamp, .ledger-row, .tide-labels, .month-relic em, .archive-relic span, .seal-output {
  font-family: var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.gate-chamber {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 44vw);
  align-items: end;
  gap: 2vw;
  padding-top: 7vw;
  overflow: hidden;
}

.gate-chamber::after {
  content: "MMXXVI / ANNUAL ROUTE / BLACK VAULT";
  position: absolute;
  right: -120px;
  top: 22vh;
  color: rgba(201, 162, 39, .16);
  font: 900 clamp(42px, 7vw, 116px)/1 var(--font-display);
  letter-spacing: -.05em;
  transform: rotate(90deg);
  transform-origin: center;
  white-space: nowrap;
}

.coordinate-stamp {
  position: absolute;
  color: var(--bronze);
  font-size: 11px;
}
.top-left { top: 34px; left: 12vw; }
.bottom-right { right: 7vw; bottom: 36px; }

.orbit-rule {
  position: absolute;
  left: -9vw;
  top: 16vh;
  width: 112vw;
  height: 56vh;
  z-index: -1;
  opacity: .72;
  transform: rotate(-8deg);
}
.orbit-rule ellipse {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2;
  stroke-dasharray: 34 7 2 7;
}

.title-stack { min-width: 0; }
.title-stack .roman-label { color: var(--gold); margin: 0 0 18px; }
h1, h2, h3 { margin: 0; font-family: var(--font-display); text-transform: uppercase; }
h1 {
  color: var(--parchment);
  font-size: clamp(76px, 15vw, 236px);
  line-height: .76;
  letter-spacing: -.085em;
  margin-left: -1.4vw;
  max-width: 9ch;
  text-shadow: 8px 0 0 rgba(201, 162, 39, .18), 18px 18px 0 #000;
}
.serif-fragment, .serif-quote {
  font-family: var(--font-serif);
  color: var(--parchment);
  font-size: clamp(24px, 3vw, 48px);
  line-height: 1;
}
.serif-fragment { max-width: 560px; color: rgba(232, 217, 181, .78); }

.hero-wave {
  padding: 24px;
  align-self: center;
  min-height: 310px;
  margin-top: 20vh;
  z-index: 3;
}
.ledger-row {
  display: flex;
  justify-content: space-between;
  color: var(--gold);
  font-size: 12px;
  margin-bottom: 32px;
}
.gold-waveform path, .procession-wave path {
  fill: none;
  stroke: var(--gold);
  stroke-width: 6;
  stroke-linecap: square;
  filter: drop-shadow(0 0 10px rgba(201, 162, 39, .3));
  transition: stroke .3s ease, stroke-width .3s ease;
}
.gold-waveform .shadow-wave { stroke: var(--bronze); stroke-width: 2; opacity: .75; }
.hero-wave:hover .gold-waveform path, .gold-waveform.pulse path { stroke: var(--molten); stroke-width: 8; }
.tick-ruler {
  height: 42px;
  margin-top: 18px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 38px);
  border-top: 1px solid var(--bronze);
  opacity: .8;
}

.tick-ruler::after {
  content: "01 02 03 04 05 06 07 08 09 10 11 12";
  display: block;
  color: rgba(232, 217, 181, .42);
  font: 700 9px/42px var(--font-mono);
  letter-spacing: 1.72vw;
  padding-left: 4px;
  white-space: nowrap;
  overflow: hidden;
}
.gate-plinth {
  position: absolute;
  right: 13vw;
  bottom: 10vh;
  width: 330px;
  padding: 22px;
  z-index: 4;
}
.gate-plinth span { color: var(--bronze); font: 700 11px var(--font-mono); letter-spacing: .18em; }
.gate-plinth strong { display: block; margin-top: 10px; font-size: 20px; color: var(--molten); }

.signals-chamber { padding-top: 8vw; }
.section-heading { width: min(720px, 75vw); padding: 30px; margin-bottom: 40px; z-index: 3; }
.section-heading h2, .tide-map h2, .archive-title h2, .return-mark h2 { font-size: clamp(42px, 6.8vw, 108px); line-height: .86; color: var(--parchment); }
.wave-path-wrap { position: relative; min-height: 620px; }
.procession-wave { position: absolute; inset: 70px 0 auto -5vw; width: 94vw; height: 420px; opacity: .9; }
.procession-wave path { stroke-width: 3; stroke-dasharray: 18 10; }
.month-field { position: relative; min-height: 590px; }
.month-relic {
  position: absolute;
  width: 138px;
  min-height: 128px;
  padding: 16px;
  background: #0d0c0a;
  border: 1px solid rgba(201, 162, 39, .52);
  box-shadow: 12px 15px 0 rgba(0,0,0,.76);
  cursor: pointer;
}
.month-relic span { font: 900 54px/.78 var(--font-display); color: rgba(232,217,181,.16); }
.month-relic b { display: block; color: var(--gold); font: 900 22px var(--font-display); }
.month-relic em { display: block; color: var(--bronze); font-size: 9px; font-style: normal; margin-top: 10px; }
.month-relic.active { border-color: var(--molten); background: linear-gradient(145deg, #17130a, #090807); }
.month-relic.active b, .month-relic:hover b { color: var(--molten); }
.month-relic:nth-child(1) { left: 0%; top: 250px; } .month-relic:nth-child(2) { left: 8%; top: 116px; }
.month-relic:nth-child(3) { left: 17%; top: 72px; } .month-relic:nth-child(4) { left: 26%; top: 210px; }
.month-relic:nth-child(5) { left: 35%; top: 360px; } .month-relic:nth-child(6) { left: 44%; top: 304px; }
.month-relic:nth-child(7) { left: 52%; top: 130px; } .month-relic:nth-child(8) { left: 61%; top: 64px; }
.month-relic:nth-child(9) { left: 70%; top: 196px; } .month-relic:nth-child(10) { left: 78%; top: 352px; }
.month-relic:nth-child(11) { left: 86%; top: 300px; } .month-relic:nth-child(12) { left: 92%; top: 125px; }
.signal-readout { position: absolute; right: 8vw; bottom: 9vw; width: 350px; padding: 24px; background: rgba(42,7,7,.92); }
.signal-readout span { font: 900 86px/.8 var(--font-display); color: var(--molten); }
.signal-readout p { margin: 12px 0 0; color: var(--parchment); }

.tide-chamber { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 32vw); gap: 5vw; align-items: center; }
.tide-map { padding: 36px; min-height: 620px; }
.ridge-stack { position: relative; height: 290px; margin-top: 58px; overflow: hidden; border: 1px solid rgba(111,84,32,.55); background: #080807; }
.ridge-stack i {
  position: absolute;
  left: -5%;
  width: 110%;
  height: 82px;
  border-top: 2px solid rgba(201,162,39,.75);
  border-radius: 50%;
  transform: skewX(-14deg);
  transition: transform .5s ease, border-color .5s ease;
}
.ridge-stack i:nth-child(1){ top:28px; } .ridge-stack i:nth-child(2){ top:62px; } .ridge-stack i:nth-child(3){ top:96px; }
.ridge-stack i:nth-child(4){ top:130px; } .ridge-stack i:nth-child(5){ top:164px; } .ridge-stack i:nth-child(6){ top:198px; } .ridge-stack i:nth-child(7){ top:232px; }
.tide-map:hover .ridge-stack i { transform: translateX(22px) skewX(-14deg); border-color: var(--molten); }
.tide-labels { display: flex; justify-content: space-between; color: var(--bronze); font-size: 10px; margin-top: 18px; }
.serif-quote { border-left: 2px solid var(--gold); padding-left: 28px; color: var(--parchment); }

.archive-chamber { background: linear-gradient(180deg, transparent, rgba(42,7,7,.22)); }
.archive-title { max-width: 890px; margin-bottom: 54px; }
.archive-grid { display: grid; grid-template-columns: 1.1fr .9fr 1fr; grid-auto-rows: 210px; gap: 28px; max-width: 1050px; }
.archive-relic { padding: 26px; overflow: hidden; }
.archive-relic::after {
  content: "";
  position: absolute;
  right: -28px;
  bottom: -28px;
  width: 118px;
  height: 118px;
  border: 1px dashed rgba(201, 162, 39, .5);
  border-radius: 50%;
  box-shadow: inset 0 0 0 18px rgba(111, 84, 32, .08), inset 0 0 0 36px rgba(201, 162, 39, .05);
  opacity: .7;
}
.archive-relic span { color: var(--bronze); font-size: 11px; }
.archive-relic h3 { color: var(--gold); font-size: clamp(28px, 3vw, 48px); line-height: .88; margin-top: 18px; }
.archive-relic p { max-width: 260px; color: rgba(232,217,181,.72); }
.archive-relic.oxblood { background: linear-gradient(145deg, var(--oxblood), var(--carbon)); }
.archive-relic.tall { grid-row: span 2; }

.return-chamber { min-height: 92vh; display: grid; place-items: center; overflow: hidden; }
.return-mark { width: min(900px, 78vw); padding: clamp(32px, 6vw, 80px); text-align: left; }
.return-mark p { max-width: 650px; font-size: 18px; color: rgba(232,217,181,.78); }
.seal-button {
  margin-top: 26px;
  border: 1px solid var(--gold);
  background: var(--obsidian);
  color: var(--molten);
  padding: 18px 24px;
  font: 900 12px var(--font-mono);
  letter-spacing: .18em;
  cursor: pointer;
  box-shadow: 10px 10px 0 rgba(0,0,0,.8);
  transition: transform .25s ease, background .25s ease, color .25s ease;
}
.seal-button:hover { transform: translate(-3px, -5px); background: var(--gold); color: var(--obsidian); }
.seal-output { margin-top: 22px; color: var(--bronze); }
.seal-output.impressed { color: var(--molten); }
.closing-wave { position: absolute; left: 0; bottom: 8vh; width: 100vw; height: 170px; opacity: .55; }

@keyframes slow-dash {
  to { stroke-dashoffset: -180; }
}

.orbit-rule ellipse,
.procession-wave path,
.closing-wave path { animation: slow-dash 14s linear infinite; }

.procession-wave path,
.closing-wave path { stroke-dasharray: 24 12; }

.ledger-depth { background-image: linear-gradient(145deg, rgba(201,162,39,.08), transparent 38%), linear-gradient(145deg, #17140d, #070706); }

@media (max-width: 900px) {
  .chamber { padding-left: 70px; padding-right: 24px; }
  .gate-chamber, .tide-chamber { grid-template-columns: 1fr; }
  .hero-wave { margin-top: 0; }
  .gate-plinth, .signal-readout { position: relative; right: auto; bottom: auto; width: auto; margin-top: 24px; }
  .month-relic { position: relative; left: auto !important; top: auto !important; width: auto; }
  .month-field { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; min-height: 0; }
  .procession-wave { display: none; }
  .archive-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
}