:root {
  /* Design typography tokens: Space Grotesk** Grotesk* for concise story copy; IBM Plex Mono** Mono* for coordinates. */
  --cavern: #08050D;
  --violet: #17102B;
  --cream: #FFF4C7;
  --red: #FF315A;
  --cyan: #16F4D0;
  --amber: #FFB000;
  --leather: #7A3F24;
  --chartreuse: #C6FF00;
  --display: "Bungee Shade", Impact, fantasy;
  --mono-display: "Monoton", "Courier New", monospace;
  --body: "Space Grotesk", Inter, system-ui, sans-serif;
  --micro: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--cream);
  background: radial-gradient(circle at 22% 12%, rgba(122, 63, 36, .45), transparent 24%), radial-gradient(circle at 78% 8%, rgba(255, 49, 90, .2), transparent 18%), linear-gradient(160deg, var(--cavern), var(--violet) 52%, var(--cavern));
  font-family: var(--body);
  overflow-x: hidden;
}

button { font: inherit; color: inherit; cursor: pointer; }

.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .34;
  background-image: radial-gradient(circle at 20% 30%, rgba(255,244,199,.12) 0 1px, transparent 2px), radial-gradient(circle at 70% 60%, rgba(122,63,36,.22) 0 1px, transparent 2px), linear-gradient(90deg, transparent 48%, rgba(255,255,255,.035) 50%, transparent 52%);
  background-size: 23px 23px, 31px 31px, 9px 9px;
  mix-blend-mode: screen;
}

.rail-left {
  position: fixed;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 6px;
  z-index: 4;
  background: rgba(255, 244, 199, .08);
  border-left: 1px dashed rgba(255, 244, 199, .28);
  border-right: 1px dashed rgba(255, 244, 199, .28);
}

.rail-left span {
  display: block;
  width: 100%;
  height: 14%;
  background: linear-gradient(var(--cyan), var(--chartreuse));
  box-shadow: 0 0 22px var(--cyan);
  transform: translateY(var(--rail-progress, 0vh));
  transition: transform .8s cubic-bezier(.2,.8,.2,1);
}

.lift-nav {
  position: fixed;
  z-index: 8;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  gap: 10px;
  background: linear-gradient(145deg, #2a140d, var(--leather));
  border: 2px solid var(--cream);
  border-radius: 28px;
  padding: 12px 8px;
  box-shadow: inset 0 0 0 2px rgba(0,0,0,.25), 0 16px 40px rgba(0,0,0,.4);
}

.nav-dot {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--violet);
  background: var(--cavern);
  color: var(--cream);
  font-family: var(--micro);
  font-size: 11px;
  transition: transform .25s ease, background .25s ease, color .25s ease;
}

.nav-dot.active { background: var(--amber); color: var(--cavern); transform: scale(1.08); box-shadow: 0 0 0 4px var(--red), 0 0 24px var(--amber); }

.chamber {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: 7vw 9vw 7vw 10vw;
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 5px solid rgba(255, 244, 199, .12);
}

.chamber.locked { filter: saturate(.55) brightness(.62); }
.chamber.locked .hidden-copy, .chamber.locked .reveal-control { opacity: .42; }
.chamber.unlocked { animation: warmUnlock .8s ease both; }

@keyframes warmUnlock {
  from { box-shadow: inset 0 0 0 100vmax rgba(8,5,13,.38); }
  to { box-shadow: inset 0 0 0 0 rgba(8,5,13,0); }
}

.lobby { min-height: 100vh; place-items: center; text-align: center; }

.station-sign {
  position: relative;
  max-width: 1000px;
  padding: 28px 36px 42px;
  background: linear-gradient(160deg, rgba(23,16,43,.96), rgba(8,5,13,.86));
  border: 5px solid var(--cream);
  border-radius: 24px 24px 64px 24px;
  box-shadow: 16px 18px 0 var(--red), -18px 14px 0 var(--cyan), 0 0 60px rgba(255,176,0,.22);
}

.station-sign h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.8rem, 12vw, 11rem);
  line-height: .84;
  color: var(--cream);
  text-shadow: 7px 7px 0 var(--amber), 13px 13px 0 var(--violet);
}

.station-sign p { margin: 22px auto 0; max-width: 620px; font-size: clamp(1rem, 2vw, 1.35rem); }
.mono-mark, .route-label { font-family: var(--mono-display); color: var(--cyan); letter-spacing: .08em; text-shadow: 0 0 18px var(--cyan); }

.elevator-button {
  position: absolute;
  bottom: 9vh;
  right: 13vw;
  border: 3px solid var(--cream);
  border-radius: 26px;
  padding: 18px 24px;
  min-width: 180px;
  background: linear-gradient(145deg, #32170d, var(--leather));
  box-shadow: inset 0 0 18px rgba(0,0,0,.42), 10px 10px 0 var(--violet);
}

.elevator-button strong { display: block; font-family: var(--display); font-size: 2rem; color: var(--amber); }
.elevator-button small, .hatch-button { font-family: var(--micro); text-transform: uppercase; }
.button-light { display: inline-block; width: 18px; height: 18px; border-radius: 50%; background: var(--red); box-shadow: 0 0 16px var(--red); animation: blink 1.4s steps(2) infinite; }
@keyframes blink { 50% { opacity: .2; } }

.dormant-block { position: absolute; background: var(--violet); border: 3px solid var(--cream); opacity: .75; }
.block-a { width: 15vw; height: 18vh; left: 9vw; top: 13vh; border-radius: 0 40px 0 0; box-shadow: 12px 12px 0 var(--chartreuse); }
.block-b { width: 11vw; height: 30vh; right: 12vw; top: 17vh; box-shadow: -12px 12px 0 var(--red); }
.block-c { width: 26vw; height: 9vh; left: 17vw; bottom: 11vh; box-shadow: 12px -10px 0 var(--amber); }
.floor-track { position: absolute; left: 8vw; right: 8vw; bottom: 5vh; height: 10px; background: linear-gradient(90deg, transparent, var(--cyan), var(--chartreuse), transparent); box-shadow: 0 0 28px var(--cyan); }

.route-label { position: absolute; top: 8vh; left: 10vw; font-size: clamp(1.1rem, 2vw, 2rem); }
.module, .map-folds, .glyph-islands, .capsule-bank, .window-stack { width: min(900px, 80vw); min-height: 55vh; }

.gate { grid-template-columns: 1.1fr .6fr; gap: 4vw; background: radial-gradient(circle at 80% 30%, rgba(255,176,0,.14), transparent 24%); }
.gate-shell { position: relative; background: var(--violet); border: 6px solid var(--cream); border-radius: 18px 70px 18px 18px; box-shadow: 20px 20px 0 var(--leather), inset 0 0 0 12px var(--cavern); }
.hinge-door { position: absolute; inset: 22px 48% 22px 22px; transform-origin: left center; background: linear-gradient(135deg, var(--leather), #3a1a0e); border: 3px solid var(--cream); border-radius: 14px; transition: transform .7s cubic-bezier(.2,.9,.1,1), box-shadow .7s; }
.gate.revealed .hinge-door { transform: perspective(700px) rotateY(-62deg); box-shadow: 0 0 32px var(--amber); }
.stitch { position: absolute; inset: 12px; border: 2px dashed var(--amber); border-radius: 9px; }
.seal { position: absolute; right: 16px; bottom: 14px; font-family: var(--micro); color: var(--chartreuse); }
.glyph.arrow { position: absolute; right: 10%; top: 35%; width: 130px; height: 90px; background: var(--red); clip-path: polygon(0 30%, 62% 30%, 62% 0, 100% 50%, 62% 100%, 62% 70%, 0 70%); filter: drop-shadow(0 0 18px var(--red)); }
.hatch-button { align-self: end; justify-self: start; background: var(--red); border: 3px solid var(--cream); color: var(--cream); padding: 18px 22px; border-radius: 0 22px 22px 22px; box-shadow: 8px 8px 0 var(--cavern); }

.hidden-copy { opacity: 0; transform: translateY(24px) scale(.98); transition: opacity .55s ease, transform .55s ease; }
.revealed .hidden-copy, .hidden-copy.visible { opacity: 1; transform: translateY(0) scale(1); }
.hidden-copy h2 { font-family: var(--display); font-size: clamp(2.4rem, 6vw, 6rem); line-height: .9; margin: 0 0 20px; color: var(--cream); text-shadow: 5px 5px 0 var(--amber); }
.hidden-copy p { font-size: clamp(1rem, 1.6vw, 1.3rem); max-width: 560px; line-height: 1.55; }
.gate .hidden-copy { position: absolute; right: 7%; top: 19%; max-width: 45%; }

.mapskin { background: linear-gradient(120deg, rgba(122,63,36,.2), transparent 40%); grid-template-columns: 1fr .72fr; gap: 4vw; }
.leather, .fold { background-color: var(--leather); background-image: radial-gradient(circle at 20% 30%, rgba(255,244,199,.16) 0 1px, transparent 2px), radial-gradient(circle at 70% 70%, rgba(0,0,0,.25) 0 1px, transparent 2px), linear-gradient(145deg, rgba(255,176,0,.18), rgba(0,0,0,.25)); background-size: 12px 12px, 17px 17px, auto; }
.map-folds { display: grid; grid-template-columns: repeat(3, 1fr); min-height: 62vh; filter: drop-shadow(22px 20px 0 rgba(8,5,13,.7)); }
.fold { position: relative; border: 3px solid var(--cream); color: var(--cream); min-height: 55vh; transition: transform .55s ease, filter .55s ease; overflow: hidden; }
.fold span { position: absolute; top: 20px; left: 20px; font-family: var(--micro); color: var(--chartreuse); }
.fold:after { content: ""; position: absolute; inset: 14px; border: 2px dashed var(--amber); }
.fold-one { transform: rotate(-4deg); border-radius: 28px 0 0 60px; }
.fold-two { transform: translateY(22px); background-color: #5c2d19; }
.fold-three { transform: rotate(5deg); border-radius: 0 58px 28px 0; }
.mapskin.revealed .fold-one { transform: rotate(-16deg) translateX(-18px); }
.mapskin.revealed .fold-two { transform: translateY(-8px); filter: brightness(1.25); }
.mapskin.revealed .fold-three { transform: rotate(16deg) translateX(18px); }
.caption-tag { align-self: center; padding: 28px; border: 3px solid var(--cream); border-radius: 18px; background: rgba(8,5,13,.72); box-shadow: 12px 12px 0 var(--cyan); }

.signal { place-items: center; background: radial-gradient(circle at 50% 50%, rgba(22,244,208,.1), transparent 38%); }
.glyph-islands { position: relative; min-height: 58vh; }
.island { position: absolute; border: 4px solid var(--cream); background: var(--violet); box-shadow: 10px 10px 0 var(--red); font-family: var(--micro); text-transform: uppercase; transition: transform .7s cubic-bezier(.2,.8,.2,1), background .3s; }
.zig { left: 8%; top: 12%; width: 160px; height: 92px; border-radius: 45px 10px; color: var(--chartreuse); }
.dot { right: 18%; top: 4%; width: 130px; height: 130px; border-radius: 50%; background: var(--red); }
.chip { left: 28%; bottom: 10%; width: 190px; height: 100px; background: var(--amber); color: var(--cavern); border-radius: 12px; }
.ladder { right: 8%; bottom: 16%; width: 110px; height: 220px; background: repeating-linear-gradient(0deg, var(--cyan) 0 12px, var(--violet) 12px 28px); border-radius: 12px 55px 12px 12px; }
.signal.revealed .zig { transform: translate(150px, 90px) rotate(12deg); }
.signal.revealed .dot { transform: translate(-170px, 130px) scale(.8); }
.signal.revealed .chip { transform: translate(230px, -72px) rotate(-6deg); }
.signal.revealed .ladder { transform: translate(-250px, -62px) rotate(90deg); }
.signal.revealed .island { background: var(--chartreuse); color: var(--cavern); animation: bounceOnce .55s ease; }
@keyframes bounceOnce { 35% { scale: 1.12; } }
.signal-copy { position: absolute; left: 11vw; bottom: 8vh; }

.future { grid-template-columns: .85fr 1fr; gap: 6vw; background: linear-gradient(90deg, rgba(22,244,208,.1), transparent 56%); }
.capsule-bank { display: grid; gap: 22px; }
.capsule-window { position: relative; height: 145px; border: 5px solid var(--cyan); border-radius: 999px; background: linear-gradient(90deg, rgba(255,244,199,.18), rgba(22,244,208,.08)); box-shadow: inset 0 0 42px rgba(255,244,199,.26), 0 0 26px rgba(22,244,208,.4); overflow: hidden; }
.capsule-window:before { content: ""; position: absolute; inset: 0; background: rgba(255,244,199,.72); filter: blur(12px); transition: transform .65s ease, opacity .65s ease; }
.capsule-window span { position: absolute; left: 18%; top: 50%; width: 26px; height: 26px; border-radius: 50%; background: var(--amber); box-shadow: 190px 0 0 var(--red), 380px 0 0 var(--chartreuse), 0 0 20px var(--amber); }
.future.revealed .capsule-window:before { transform: translateX(110%); opacity: 0; }

.exit { place-items: center; background: radial-gradient(circle at 50% 25%, rgba(255,176,0,.2), transparent 32%); }
.window-stack { display: grid; place-items: center; gap: 18px; perspective: 900px; }
.warm-window { border: 4px solid var(--cream); background: linear-gradient(180deg, var(--cream), var(--amber)); color: var(--cavern); font-family: var(--display); box-shadow: 0 0 26px rgba(255,176,0,.55), 14px 14px 0 var(--leather); transition: transform .6s ease; }
.warm-window:nth-child(1) { width: 330px; height: 110px; border-radius: 70px 70px 18px 18px; transform: translateZ(-120px) translateY(45px); }
.warm-window:nth-child(2) { width: 460px; height: 130px; border-radius: 24px 80px 24px 80px; transform: translateZ(-50px); }
.warm-window:nth-child(3) { width: 620px; height: 150px; border-radius: 18px 18px 90px 90px; }
.exit.revealed .warm-window:nth-child(1) { transform: translateZ(0) translateY(0); }
.exit.revealed .warm-window:nth-child(2) { transform: translateZ(30px) translateX(-35px); }
.exit.revealed .warm-window:nth-child(3) { transform: translateZ(70px) translateX(35px); }
.exit-copy { position: absolute; right: 9vw; bottom: 7vh; background: rgba(8,5,13,.72); padding: 24px; border-left: 8px solid var(--chartreuse); }

@media (max-width: 850px) {
  .chamber { padding: 100px 28px 80px 58px; grid-template-columns: 1fr; }
  .lift-nav { right: 8px; transform: translateY(-50%) scale(.82); }
  .rail-left { left: 14px; }
  .station-sign { padding: 22px 18px 30px; }
  .elevator-button { position: relative; right: auto; bottom: auto; margin-top: 34px; }
  .gate .hidden-copy, .signal-copy, .exit-copy { position: relative; left: auto; right: auto; bottom: auto; top: auto; max-width: none; }
  .module, .map-folds, .glyph-islands, .capsule-bank, .window-stack { width: 100%; }
  .mapskin { grid-template-columns: 1fr; }
  .map-folds { grid-template-columns: 1fr; min-height: auto; }
  .fold { min-height: 170px; }
  .island { position: relative; inset: auto; margin: 12px; display: inline-block; }
  .glyph-islands { min-height: auto; }
  .warm-window:nth-child(n) { width: min(92vw, 430px); }
}