:root {
  --brass: #D8B35A;
  --pewter: #B8B0A2;
  --burgundy: #5A1025;
  --emerald: #0F6B55;
  --pearl: #F3E6C8;
  --cobalt: #2D5BFF;
  --black: #08070B;
  --limelight: Limelight, Cormorant, Georgia, serif;
  --cormorant: "Cormorant Garamond", Cormorant, Garamond, Georgia, serif;
  --commissioner: Commissioner, Inter, system-ui, sans-serif;
  --bebas: "Bebas Neue", Impact, Haettenschweiler, sans-serif;
  --mx: 50vw;
  --my: 50vh;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  color: var(--pearl);
  font-family: var(--commissioner);
  background:
    radial-gradient(circle at var(--mx) var(--my), rgba(216,179,90,.20), transparent 24rem),
    radial-gradient(circle at 75% 20%, rgba(45,91,255,.16), transparent 30rem),
    linear-gradient(125deg, var(--black), #12040a 36%, #050407 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: .26;
  background:
    repeating-linear-gradient(90deg, transparent 0 21px, rgba(216,179,90,.14) 22px 23px, transparent 24px 42px),
    radial-gradient(circle, rgba(243,230,200,.22) 1px, transparent 2px) 0 0 / 28px 28px;
  mix-blend-mode: screen;
}

button, a { color: inherit; font: inherit; }
button { cursor: pointer; }
.hotel-glow {
  position: fixed;
  left: var(--mx);
  top: var(--my);
  width: 34vw;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(243,230,200,.25), rgba(216,179,90,.11) 38%, transparent 70%);
  filter: blur(10px);
  z-index: 1;
  pointer-events: none;
}

.brass-tabs {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: grid;
  gap: 12px;
}
.tab {
  width: 54px;
  height: 42px;
  display: grid;
  place-items: center;
  text-decoration: none;
  color: var(--black);
  font: 700 14px/1 var(--bebas);
  letter-spacing: .12em;
  background: linear-gradient(145deg, #F3E6C8, var(--brass) 42%, #7d5a18);
  border: 1px solid rgba(243,230,200,.8);
  clip-path: polygon(14% 0, 100% 0, 86% 50%, 100% 100%, 14% 100%, 0 50%);
  box-shadow: 0 9px 24px rgba(0,0,0,.5), inset 0 0 8px rgba(255,255,255,.45);
  transition: transform .35s ease, filter .35s ease;
}
.tab.active { transform: translateX(-12px); filter: drop-shadow(0 0 12px rgba(216,179,90,.9)); }

.lift-register {
  position: fixed;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 25;
  width: 70px;
  padding: 12px 10px;
  border: 1px solid rgba(216,179,90,.7);
  background: linear-gradient(180deg, rgba(8,7,11,.92), rgba(90,16,37,.74));
  box-shadow: inset 0 0 22px rgba(216,179,90,.16), 0 20px 46px rgba(0,0,0,.45);
}
.register-track { height: 300px; margin: 10px auto; width: 8px; background: rgba(184,176,162,.25); position: relative; border-radius: 10px; }
.register-track span { position: absolute; left: -7px; top: 0; width: 22px; height: 22px; border-radius: 50%; background: var(--emerald); box-shadow: 0 0 18px var(--emerald), inset 0 0 0 4px var(--pearl); transition: top .25s ease; }
.lift-register p { margin: 0; writing-mode: vertical-rl; font: 700 13px var(--commissioner); letter-spacing: .25em; color: var(--brass); }

.deco-fan {
  background:
    radial-gradient(circle at 50% 100%, transparent 0 25%, rgba(216,179,90,.9) 26% 28%, transparent 29%),
    conic-gradient(from 220deg at 50% 100%, transparent 0 10deg, rgba(216,179,90,.75) 10deg 12deg, transparent 12deg 28deg, rgba(216,179,90,.75) 28deg 30deg, transparent 30deg 46deg, rgba(216,179,90,.75) 46deg 48deg, transparent 48deg 64deg, rgba(216,179,90,.75) 64deg 66deg, transparent 66deg 82deg, rgba(216,179,90,.75) 82deg 84deg, transparent 84deg 140deg);
}

.chamber {
  min-height: 100vh;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 5vw;
  padding: 7vh 9vw 7vh 10vw;
  isolation: isolate;
  overflow: hidden;
}
.chamber::after {
  content: "";
  position: absolute;
  inset: 5vh 6vw;
  z-index: -1;
  border: 1px solid rgba(216,179,90,.45);
  outline: 1px solid rgba(184,176,162,.16);
  outline-offset: -14px;
  background:
    linear-gradient(135deg, rgba(216,179,90,.08), transparent 26%, rgba(15,107,85,.11)),
    repeating-linear-gradient(45deg, rgba(243,230,200,.03) 0 12px, transparent 13px 26px);
  box-shadow: inset 0 0 80px rgba(0,0,0,.55), 0 50px 120px rgba(0,0,0,.35);
}
.chamber::before {
  content: attr(data-floor);
  position: absolute;
  right: 9vw;
  top: 8vh;
  font: 14vw/.8 var(--bebas);
  color: rgba(216,179,90,.07);
  z-index: -1;
}

.opening-chamber { grid-template-columns: 1.15fr .85fr; }
.arch-frame { position: relative; justify-self: center; width: min(640px, 86vw); height: min(760px, 82vh); display: grid; place-items: center; }
.arch-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 8px double var(--brass);
  border-radius: 48% 48% 20px 20px / 24% 24% 20px 20px;
  background: linear-gradient(180deg, rgba(90,16,37,.72), rgba(8,7,11,.96));
  box-shadow: inset 0 0 80px rgba(216,179,90,.16), 0 30px 80px rgba(0,0,0,.55);
}
.fan-top { position: absolute; top: 28px; width: 280px; height: 120px; opacity: .65; }
.elevator-stage { position: relative; width: 76%; height: 67%; border: 0; padding: 0; background: transparent; display: flex; overflow: hidden; box-shadow: 0 0 0 2px rgba(216,179,90,.62), inset 0 0 40px rgba(243,230,200,.12); }
.mirror-glow { position: absolute; inset: 0; background: radial-gradient(circle, rgba(243,230,200,.78), rgba(15,107,85,.38) 35%, transparent 62%); opacity: .08; transform: scale(.55); transition: opacity .75s ease, transform .75s ease; }
.enamel-door { position: relative; width: 50%; height: 100%; display: grid; place-items: center; background: linear-gradient(90deg, #030306, #161017 28%, var(--black) 55%, #2a0713); border: 1px solid rgba(216,179,90,.46); transition: transform 1s cubic-bezier(.2,.85,.2,1); }
.enamel-door::before { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(216,179,90,.32); background: linear-gradient(135deg, transparent 0 48%, rgba(216,179,90,.18) 49% 51%, transparent 52%); }
.left-door { transform-origin: left center; }
.right-door { transform-origin: right center; }
.brass-inlay { color: var(--brass); text-shadow: 0 0 1px #fff3bc, 0 0 18px rgba(216,179,90,.42); }
.p-mark { font: clamp(8rem, 15vw, 14rem)/1 var(--limelight); font-style: normal; z-index: 2; }
.wordmark { position: absolute; left: 50%; top: 50%; z-index: 4; transform: translate(-50%, -50%); display: flex; align-items: baseline; gap: .12em; font: clamp(3rem, 7vw, 7rem)/1 var(--limelight); letter-spacing: .04em; pointer-events: none; transition: opacity .5s ease; }
.wordmark em { font: 700 clamp(1rem, 2vw, 1.6rem) var(--commissioner); color: var(--pearl); }
body.opened .left-door { transform: translateX(-42%) rotateY(11deg); }
body.opened .right-door { transform: translateX(42%) rotateY(-11deg); }
body.opened .mirror-glow { opacity: .85; transform: scale(1); }
body.opened .wordmark { opacity: .18; }

.floor-dial { position: absolute; bottom: 12px; width: 300px; height: 154px; border-radius: 154px 154px 0 0; border: 4px double var(--brass); border-bottom: 0; background: radial-gradient(circle at 50% 100%, var(--black) 0 16%, rgba(15,107,85,.55) 17% 18%, rgba(8,7,11,.92) 19%); }
.floor-dial i { position: absolute; bottom: 20px; left: 50%; transform-origin: 0 112px; font: 700 13px var(--commissioner); color: var(--pearl); font-style: normal; }
.floor-dial i:nth-child(2) { transform: rotate(-62deg) translateY(-112px); }
.floor-dial i:nth-child(3) { transform: rotate(-31deg) translateY(-112px); }
.floor-dial i:nth-child(4) { transform: rotate(0deg) translateY(-112px); }
.floor-dial i:nth-child(5) { transform: rotate(31deg) translateY(-112px); }
.floor-dial i:nth-child(6) { transform: rotate(62deg) translateY(-112px); }
.dial-needle { position: absolute; left: 50%; bottom: 0; width: 4px; height: 118px; background: var(--emerald); transform-origin: 50% 100%; transform: rotate(var(--needle, -62deg)); box-shadow: 0 0 16px var(--emerald); transition: transform .45s ease; }

.plaque { position: relative; z-index: 3; max-width: 520px; padding: 30px 34px; color: var(--pearl); background: linear-gradient(145deg, rgba(8,7,11,.86), rgba(90,16,37,.76)); border: 1px solid rgba(216,179,90,.65); box-shadow: inset 0 0 24px rgba(216,179,90,.12), 0 26px 70px rgba(0,0,0,.45); }
.plaque::before { content: ""; position: absolute; inset: 10px; border: 1px solid rgba(184,176,162,.28); pointer-events: none; }
.floor-number { display: inline-block; margin-bottom: 10px; color: var(--brass); font: 700 1rem var(--commissioner); letter-spacing: .38em; }
h1, h2 { margin: 0 0 16px; font: clamp(3.1rem, 7vw, 7.4rem)/.86 var(--limelight); color: var(--brass); letter-spacing: .03em; }
p { margin: 0; font: clamp(1.1rem, 1.55vw, 1.45rem)/1.55 var(--cormorant); color: var(--pearl); }
small { display: block; margin-top: 22px; color: var(--pewter); font: 700 .78rem var(--commissioner); letter-spacing: .24em; text-transform: uppercase; }
.narrow { max-width: 430px; }

.dial-chamber { background: radial-gradient(circle at 70% 45%, rgba(45,91,255,.13), transparent 28rem); }
.zigzag-apparatus { position: relative; width: min(720px, 86vw); justify-self: center; }
.z-rails { width: 100%; overflow: visible; filter: drop-shadow(0 0 18px rgba(216,179,90,.55)); }
.rail { fill: none; stroke-width: 28; stroke-linecap: square; stroke-linejoin: bevel; stroke-dasharray: 1240; stroke-dashoffset: 1240; transition: stroke-dashoffset 1.3s ease; }
.rail-one { stroke: var(--brass); }
.rail-two { stroke: var(--burgundy); filter: drop-shadow(0 0 7px rgba(90,16,37,.9)); }
.chamber.active .rail, .zigzag-apparatus.awake .rail { stroke-dashoffset: 0; }
.lift-button { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 118px; height: 118px; border-radius: 50%; color: var(--pearl); background: radial-gradient(circle, var(--emerald), #073d31); border: 4px double var(--brass); font: 700 15px var(--commissioner); letter-spacing: .13em; box-shadow: 0 0 0 14px rgba(8,7,11,.8), 0 0 40px rgba(15,107,85,.7); }
.emerald-glass { position: absolute; right: 7%; bottom: 0; padding: 18px 22px; color: var(--pearl); background: linear-gradient(135deg, rgba(15,107,85,.88), rgba(243,230,200,.12)); border: 1px solid rgba(216,179,90,.7); transform: translateY(18px); opacity: .55; transition: opacity .4s ease, transform .4s ease; }
.zigzag-apparatus.awake .emerald-glass, .chamber.active .emerald-glass { opacity: 1; transform: translateY(0); }

.hall-chamber { grid-template-columns: 1fr .95fr; }
.velvet-runner { position: absolute; inset: 0 38%; background: linear-gradient(180deg, rgba(90,16,37,.08), rgba(90,16,37,.85), rgba(90,16,37,.08)); border-left: 1px solid rgba(216,179,90,.35); border-right: 1px solid rgba(216,179,90,.35); }
.fortress-arches { position: relative; z-index: 3; display: flex; align-items: end; gap: 18px; justify-self: center; }
.fortress-arches i { width: clamp(72px, 9vw, 130px); height: clamp(270px, 45vh, 470px); border: 3px solid rgba(216,179,90,.8); border-bottom: 12px solid rgba(216,179,90,.85); border-radius: 70px 70px 0 0; background: radial-gradient(ellipse at 50% 28%, rgba(243,230,200,.12), transparent 35%), linear-gradient(180deg, rgba(8,7,11,.5), rgba(15,107,85,.24)); box-shadow: inset 0 0 36px rgba(0,0,0,.55); }
.fortress-arches i:nth-child(even) { height: clamp(210px, 36vh, 380px); }
.velvet-keytag { position: absolute; z-index: 4; left: 25%; top: 22%; width: 132px; height: 190px; border-radius: 58px 58px 44px 44px; border: 2px solid rgba(216,179,90,.78); color: var(--pearl); background: linear-gradient(145deg, #761735, var(--burgundy) 60%, #21060f); box-shadow: 0 24px 50px rgba(0,0,0,.45), inset 0 0 24px rgba(216,179,90,.16); transition: transform .55s cubic-bezier(.2,1.4,.3,1); }
.velvet-keytag::before { content: ""; position: absolute; top: 18px; left: 50%; width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--brass); transform: translateX(-50%); }
.velvet-keytag span { display: block; margin-top: 42px; font: 4rem var(--limelight); color: var(--brass); }
.velvet-keytag b { font: 700 .72rem var(--commissioner); text-transform: uppercase; letter-spacing: .22em; }
.velvet-keytag.swing { transform: rotate(11deg) translateY(12px); }

.switch-chamber { grid-template-columns: 1.1fr .9fr; }
.gilded-switch { position: relative; z-index: 3; justify-self: center; width: min(620px, 86vw); height: 420px; border: 5px double var(--brass); background: linear-gradient(145deg, rgba(243,230,200,.12), rgba(8,7,11,.92)), var(--black); box-shadow: inset 0 0 60px rgba(216,179,90,.18), 0 35px 80px rgba(0,0,0,.48); }
.switch-plate { position: absolute; left: 50%; top: 30px; width: 280px; height: 125px; transform: translateX(-50%); opacity: .45; }
.switch-key { position: absolute; z-index: 3; width: 86px; height: 86px; border-radius: 50%; border: 3px solid var(--brass); color: var(--brass); background: radial-gradient(circle at 40% 30%, rgba(243,230,200,.18), rgba(90,16,37,.92)); font: 3rem var(--limelight); box-shadow: inset 0 0 18px rgba(0,0,0,.6); transition: transform .25s ease, background .25s ease, color .25s ease, box-shadow .25s ease; }
.switch-key:nth-of-type(1) { left: 80px; top: 88px; }
.switch-key:nth-of-type(2) { right: 80px; top: 88px; }
.switch-key:nth-of-type(3) { left: 80px; bottom: 66px; }
.switch-key:nth-of-type(4) { right: 80px; bottom: 66px; }
.switch-key.lit { color: var(--black); background: radial-gradient(circle, var(--pearl), var(--brass)); transform: scale(1.08); box-shadow: 0 0 26px rgba(216,179,90,.85); }
.switch-wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.switch-wires path { fill: none; stroke: var(--emerald); stroke-width: 6; stroke-linecap: round; stroke-dasharray: 700; stroke-dashoffset: 700; transition: stroke-dashoffset .85s ease; filter: drop-shadow(0 0 8px rgba(15,107,85,.8)); }
.gilded-switch.connected .switch-wires path { stroke-dashoffset: 0; }

.seal-chamber { grid-template-columns: 1fr; justify-items: center; text-align: center; }
.penthouse-seal { position: relative; z-index: 4; width: min(460px, 82vw); aspect-ratio: 1; border: 0; border-radius: 50%; background: radial-gradient(circle, rgba(243,230,200,.22), transparent 58%); display: grid; place-items: center; }
.penthouse-seal::before { content: ""; position: absolute; inset: 9%; clip-path: polygon(50% 0, 62% 22%, 86% 14%, 78% 38%, 100% 50%, 78% 62%, 86% 86%, 62% 78%, 50% 100%, 38% 78%, 14% 86%, 22% 62%, 0 50%, 22% 38%, 14% 14%, 38% 22%); background: linear-gradient(145deg, var(--pearl), var(--brass) 42%, #7c5a18); box-shadow: 0 0 44px rgba(216,179,90,.38); transition: transform .8s cubic-bezier(.2,1.3,.3,1); }
.seal-rays { position: absolute; inset: 0; border-radius: 50%; background: repeating-conic-gradient(from 0deg, rgba(216,179,90,.45) 0 3deg, transparent 3deg 12deg); opacity: .28; animation: turnSeal 18s linear infinite; }
.seal-word { position: relative; z-index: 2; display: flex; align-items: baseline; gap: 2px; font: clamp(4.5rem, 11vw, 9rem)/1 var(--limelight); color: var(--black); text-shadow: 0 1px 0 rgba(243,230,200,.7); }
.seal-word i { font-style: normal; display: inline-block; transform: translate(var(--x), var(--y)) rotate(var(--r)); transition: transform .7s cubic-bezier(.2,1.5,.3,1); }
.seal-word i:nth-child(1) { --x: -50px; --y: 28px; --r: -18deg; }
.seal-word i:nth-child(2) { --x: -18px; --y: -34px; --r: 14deg; }
.seal-word i:nth-child(3) { --x: 24px; --y: 32px; --r: -14deg; }
.seal-word i:nth-child(4) { --x: 54px; --y: -24px; --r: 18deg; }
.seal-word em { font: 700 1.45rem var(--commissioner); color: var(--burgundy); }
.penthouse-seal.clicked::before, .chamber.active .penthouse-seal::before { transform: rotate(45deg) scale(1.05); }
.penthouse-seal.clicked .seal-word i, .chamber.active .seal-word i { transform: translate(0,0) rotate(0); }
.center { max-width: 720px; }
@keyframes turnSeal { to { transform: rotate(360deg); } }

@media (max-width: 860px) {
  .chamber, .opening-chamber, .hall-chamber, .switch-chamber { grid-template-columns: 1fr; padding: 8vh 8vw 8vh 96px; }
  .brass-tabs { right: 10px; }
  .lift-register { left: 10px; }
  .arch-frame { height: 640px; }
  .velvet-keytag { left: 50%; top: 15%; }
  h1, h2 { font-size: clamp(2.6rem, 13vw, 5rem); }
}