@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;600;800&family=Libre+Caslon+Display&display=swap');

:root {
  --bg: #02070d;
  --ink: #edf4f5;
  --muted: #758991;
  --line: #173746;
  --cyan: #35d7f5;
  --gold: #ffc94e;
  --pink: #ff4ead;
  --violet: #9c68ff;
  --red: #ff6170;
  --paper: #e9e6dd;
  --sans: 'DM Sans', sans-serif;
  --serif: 'Libre Caslon Display', serif;
  --mono: 'DM Mono', monospace;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); margin: 0; }
.top { align-items: center; background: rgba(2,7,13,.82); border-bottom: 1px solid rgba(53,215,245,.13); display: flex; justify-content: space-between; position: fixed; top: 0; width: 100%; z-index: 20; }
.top-status { color: #40535d; font: 500 .52rem var(--mono); letter-spacing: .14em; padding-right: 24px; }
.kicker, .door-kicker { color: var(--gold); font: 600 .62rem var(--mono); letter-spacing: .16em; text-transform: uppercase; }

.door-scene {
  align-items: center;
  background: linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px), linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px), radial-gradient(circle at 50% 60%,rgba(156,104,255,.11),transparent 25%), #010409;
  background-size: 90px 90px,90px 90px,auto,auto;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: hidden;
  padding: clamp(88px,10vh,120px) 24px 40px;
  position: relative;
  text-align: center;
}
.door-scene::before, .door-scene::after { border: 1px solid rgba(53,215,245,.12); content: ''; height: 62%; position: absolute; top: 22%; width: 24%; }
.door-scene::before { border-right: 0; left: 2.5%; }
.door-scene::after { border-left: 0; right: 2.5%; }
.door-scene h1 { font: 700 clamp(3.1rem,7.5vw,7.8rem)/.88 var(--serif); letter-spacing: -.055em; margin: 12px 0 22px; max-width: 1060px; }
.knock-line { color: #71858e; font: 500 .56rem var(--mono); letter-spacing: .22em; margin: 0; }
.mouth-portal { height: min(51vw,480px); max-width: 760px; min-height: 330px; position: relative; width: min(88vw,760px); }
.neon-mouth { filter: drop-shadow(0 0 22px rgba(255,78,173,.22)); height: 100%; inset: 0; overflow: visible; position: absolute; width: 100%; }
.neon-mouth .lip { fill: rgba(255,78,173,.09); stroke: #ff5cae; stroke-width: 4; }
.neon-mouth .upper { fill: rgba(255,98,112,.14); stroke: #ff737f; }
.neon-mouth .lower { fill: rgba(156,104,255,.12); stroke: #c16cff; }
.neon-mouth .tongue { fill: rgba(255,55,132,.24); stroke: #ff4ead; stroke-width: 4; transform-box: fill-box; transform-origin: top; transition: filter .8s,transform 1s cubic-bezier(.2,.8,.2,1); }
.neon-mouth .tongue-line { fill: none; stroke: rgba(255,201,78,.76); stroke-width: 2; transition: stroke-width .8s; }
.trap-hatch { align-items: center; animation: breathe 5.8s ease-in-out infinite; appearance: none; background: #000; border: 1px solid #35515e; border-radius: 50%; box-shadow: 0 0 0 12px rgba(55,215,255,.03),0 0 60px rgba(156,104,255,.3); color: var(--cyan); cursor: pointer; display: flex; height: 138px; justify-content: center; left: 50%; position: absolute; top: 38%; transform: translate(-50%,-50%); transition: transform .9s cubic-bezier(.2,.8,.2,1),box-shadow .9s; width: 138px; z-index: 4; }
.trap-hatch::before { background: conic-gradient(from 40deg,var(--cyan),transparent 15%,transparent 47%,var(--pink),var(--gold),transparent 80%); border-radius: 50%; content: ''; inset: -6px; opacity: .85; position: absolute; }
.trap-hatch::after { background: #010409; border-radius: 50%; content: ''; inset: 2px; position: absolute; }
.trap-hatch span { font: 600 .62rem var(--mono); letter-spacing: .18em; z-index: 2; }
.trap-hatch i { font-size: 0; opacity: 0; position: absolute; z-index: 3; }
.pop-signal { bottom: 0; color: #536b76; font: 500 .5rem var(--mono); left: 50%; letter-spacing: .15em; position: absolute; transform: translateX(-50%); white-space: nowrap; }
.door-scene.is-open .trap-hatch { box-shadow: 0 0 0 20px rgba(55,215,255,.04),0 0 110px rgba(255,78,173,.42); transform: translate(-50%,-50%) perspective(800px) rotateX(62deg) scale(.78); }
.door-scene.is-open .trap-hatch span { opacity: 0; }
.door-scene.is-open .trap-hatch i { color: var(--gold); font-size: 3.8rem; opacity: 1; transform: rotateX(-62deg); transition: opacity .7s .25s; }
.door-scene.is-open .tongue { filter: drop-shadow(0 22px 28px rgba(255,78,173,.38)); transform: translateY(26px) scaleY(1.1); }
.door-scene.is-open .tongue-line { stroke-width: 4; }
.door-message { display: grid; gap: 6px; margin-top: -4px; max-height: 0; opacity: 0; overflow: hidden; transform: translateY(-18px); transition: max-height .7s,opacity .7s .15s,transform .7s; }
.door-scene.is-open .door-message { max-height: 220px; opacity: 1; transform: none; }
.door-message small { color: #607985; font: 500 .54rem var(--mono); letter-spacing: .12em; }
.door-message strong { font: 700 clamp(1.8rem,4vw,3.8rem) var(--serif); }
.door-message b { color: var(--gold); font: 600 .7rem var(--mono); letter-spacing: .24em; }
.door-message p { color: #677a82; font: .62rem var(--mono); margin: 2px 0; }
.skip-link { color: #445b66; font: 500 .5rem var(--mono); letter-spacing: .12em; margin-top: auto; padding: 28px 12px 4px; text-decoration: none; }
.skip-link:hover { color: var(--cyan); }

.threshold { background: radial-gradient(circle at 50% 27%,rgba(53,215,245,.08),transparent 25%),linear-gradient(150deg,#090d13,#121017 58%,#07121a); min-height: 100vh; overflow: hidden; padding: clamp(86px,10vw,150px) 6vw 0; position: relative; }
.threshold::before { background: repeating-linear-gradient(90deg,transparent 0 96px,rgba(55,215,255,.026) 97px); content: ''; inset: 0; pointer-events: none; position: absolute; }
.threshold-copy, .polaroid-triptych, .boundary-note, .return-zone { position: relative; z-index: 2; }
.threshold-copy { margin: 0 auto; max-width: 1160px; }
.threshold h2 { font: 700 clamp(3.3rem,7vw,7.5rem)/.89 var(--serif); letter-spacing: -.05em; margin: 18px 0 20px; }
.threshold h2 span { color: transparent; -webkit-text-stroke: 1.2px rgba(235,241,239,.9); text-shadow: 0 0 28px rgba(53,215,245,.14); }
.dek { color: #9bacb2; font-size: clamp(.98rem,1.4vw,1.22rem); line-height: 1.6; max-width: 760px; }

.polaroid-triptych { align-items: start; display: grid; gap: clamp(24px,4vw,64px); grid-template-columns: repeat(3,1fr); margin: clamp(75px,9vw,130px) auto 65px; max-width: 1260px; padding: 0 20px; }
.polaroid { background: var(--paper); box-shadow: 0 28px 55px rgba(0,0,0,.48),0 0 0 1px rgba(255,255,255,.38); color: #0a0e12; padding: 14px 14px 25px; position: relative; transform: rotate(-3.2deg); transition: transform .45s ease,box-shadow .45s ease; }
.polaroid:nth-child(2) { margin-top: -26px; transform: rotate(1.2deg); z-index: 2; }
.polaroid:nth-child(3) { margin-top: 16px; transform: rotate(3.6deg); }
.polaroid:hover { box-shadow: 0 38px 75px rgba(0,0,0,.6),0 0 28px rgba(53,215,245,.16); transform: rotate(0) translateY(-10px); z-index: 4; }
.tape { background: rgba(217,211,186,.72); box-shadow: 0 2px 5px rgba(0,0,0,.15); height: 24px; left: 50%; position: absolute; top: -14px; transform: translateX(-50%) rotate(2deg); width: 92px; z-index: 4; }
.polaroid:nth-child(2) .tape { background: rgba(255,201,78,.68); transform: translateX(-50%) rotate(-3deg); }
.polaroid-photo { aspect-ratio: .92; background: #090c11; overflow: hidden; position: relative; }
.low-photo { background: radial-gradient(ellipse at 48% 54%,rgba(255,255,255,.08),transparent 34%),#111216; }
.window-photo { background: radial-gradient(ellipse at 60% 37%,rgba(255,76,169,.62),transparent 26%),radial-gradient(ellipse at 36% 68%,rgba(62,112,255,.58),transparent 28%),#080812; }
.high-photo { background: radial-gradient(circle at 52% 48%,rgba(255,195,65,.55),transparent 14%),radial-gradient(ellipse at 65% 34%,rgba(255,72,108,.8),transparent 31%),radial-gradient(ellipse at 32% 72%,rgba(160,89,255,.72),transparent 30%),#0c0710; }
.orbit-sketch { inset: 12%; position: absolute; }
.orbit-sketch i { border: 1px solid rgba(236,242,242,.23); border-radius: 50%; height: 40%; left: 8%; position: absolute; top: 30%; transform: rotate(28deg); width: 84%; }
.orbit-sketch i:nth-child(2) { transform: rotate(-25deg); }
.orbit-sketch i:nth-child(3) { height: 66%; left: 24%; top: 17%; transform: rotate(56deg); width: 52%; }
.orbit-sketch i:nth-child(4) { height: 66%; left: 24%; top: 17%; transform: rotate(-54deg); width: 52%; }
.orbit-sketch b { background: #fff; border-radius: 50%; box-shadow: 0 0 22px white; height: 12px; left: calc(50% - 6px); opacity: .25; position: absolute; top: calc(50% - 6px); width: 12px; }
.window-photo .orbit-sketch i { border-color: rgba(53,215,245,.58); }
.window-photo .orbit-sketch b { opacity: 1; }
.high-photo .orbit-sketch { filter: blur(.4px); transform: scale(1.14); }
.high-photo .orbit-sketch i { border-color: rgba(255,97,112,.7); }
.map-seam { background: linear-gradient(90deg,var(--violet),var(--pink),var(--gold)); box-shadow: 0 0 16px rgba(255,78,173,.8); height: 5px; left: 8%; position: absolute; top: 52%; transform: rotate(-42deg); width: 84%; }
.false-gate { border: 3px solid var(--red); border-radius: 50%; box-shadow: 0 0 24px rgba(255,97,112,.65); height: 48%; left: 28%; position: absolute; top: 22%; width: 48%; }
.corner-mark { border-color: var(--cyan); border-style: solid; height: 34px; position: absolute; width: 34px; }
.corner-one { border-width: 3px 0 0 3px; left: 18px; top: 18px; }
.corner-two { border-width: 0 3px 3px 0; bottom: 18px; right: 18px; }
.high-photo .corner-mark { border-color: var(--red); }
.polaroid-caption { padding: 20px 8px 0; }
.polaroid-caption small { color: #707276; font: 500 .56rem var(--mono); letter-spacing: .12em; }
.polaroid-caption strong { display: block; font: 800 clamp(1.3rem,2vw,2rem) var(--sans); letter-spacing: -.04em; margin-top: 5px; }
.polaroid-low strong { color: #42484c; }
.polaroid-window strong { color: #169a82; }
.polaroid-high strong { color: #dc3f59; }
.polaroid-caption p { color: #555e62; font: .62rem/1.5 var(--mono); margin: 8px 0 0; }
.boundary-note { color: #61747c; font: 500 .54rem var(--mono); letter-spacing: .12em; margin: 0 auto 110px; max-width: 1160px; text-align: center; }

.return-zone { border-top: 1px solid rgba(53,215,245,.2); margin: 0 -6vw; padding: 90px 6vw 110px; }
.return-zone > .kicker, .return-zone > h2 { margin-left: auto; margin-right: auto; max-width: 1160px; }
.return-zone h2 { font: 700 clamp(2.8rem,6vw,6rem)/.92 var(--serif); letter-spacing: -.045em; margin-bottom: 58px; margin-top: 14px; }
.return-doors { display: grid; gap: 18px; grid-template-columns: repeat(3,1fr); margin: 0 auto; max-width: 1160px; }
.return-door { background: #070c12; border: 1px solid #29424e; color: var(--ink); display: flex; flex-direction: column; min-height: 270px; padding: 25px; position: relative; text-decoration: none; transition: background .35s,border-color .35s,transform .35s; }
.return-door::before { border: 1px solid rgba(255,255,255,.07); content: ''; inset: 12px; position: absolute; }
.return-door span { color: var(--gold); font: 500 .55rem var(--mono); letter-spacing: .14em; }
.return-door strong { font: 700 clamp(1.5rem,3vw,3rem) var(--serif); margin-top: auto; }
.return-door small { color: #71848c; font: .56rem var(--mono); margin-top: 8px; }
.return-door i { background: var(--gold); border-radius: 50%; box-shadow: 0 0 0 5px rgba(255,201,78,.06); height: 8px; position: absolute; right: 26px; top: 50%; width: 8px; }
.return-door:hover { border-color: var(--cyan); transform: translateY(-7px); }
.moon-door:hover { background: radial-gradient(circle at 72% 38%,rgba(239,245,255,.22),transparent 18%),#080d15; }
.source-door:hover { background: radial-gradient(circle at 50% 52%,rgba(53,215,245,.14),transparent 30%),#071016; }
.rainbow-door:hover { background: linear-gradient(145deg,rgba(156,104,255,.12),rgba(255,78,173,.11),rgba(255,201,78,.1)),#080b12; }

footer { border-top: 1px solid var(--line); color: #536b76; display: flex; font: 500 .52rem var(--mono); justify-content: space-between; padding: 22px 5vw; }
@keyframes breathe { 50% { filter: brightness(1.5); } }

@media (max-width: 820px) {
  .door-scene::before, .door-scene::after { display: none; }
  .mouth-portal { height: 70vw; }
  .polaroid-triptych, .return-doors { grid-template-columns: 1fr; }
  .polaroid { margin: 0 auto !important; max-width: 430px; transform: rotate(-1.5deg); width: 100%; }
  .polaroid:nth-child(2) { transform: rotate(1.5deg); }
  .polaroid:nth-child(3) { transform: rotate(-.5deg); }
  .return-door { min-height: 210px; }
}

@media (max-width: 560px) {
  .top-status { display: none; }
  .door-scene { padding-left: 18px; padding-right: 18px; }
  .door-scene h1 { font-size: clamp(3rem,15vw,5rem); }
  .mouth-portal { height: 84vw; min-height: 290px; }
  .trap-hatch { height: 104px; width: 104px; }
  .threshold { padding-left: 22px; padding-right: 22px; }
  .return-zone { margin-left: -22px; margin-right: -22px; padding-left: 22px; padding-right: 22px; }
  footer { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .trap-hatch { animation: none; }
  .trap-hatch, .door-message, .neon-mouth .tongue, .polaroid, .return-door { transition: none; }
}