:root {
  --oxidized-teal: #3F6F68;
  --old-brass: #B8924A;
  --warm-gold: #F0B45A;
  --aged-parchment: #E7D8B8;
  --urushi-black: #070508;
  --vermilion: #D6452F;
  --deep-plum: #2A142E;
  --display: "Cormorant Garamond", "Cormorant", Georgia, serif;
  --body: "Alegreya Sans", Inter, system-ui, sans-serif;
  --jp: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--urushi-black);
  color: var(--aged-parchment);
  font-family: var(--body);
  overflow-x: hidden;
}

.design-key {
  position: fixed;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

button { font: inherit; color: inherit; }

.grain, .mote-field {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

.grain {
  opacity: .18;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(240,180,90,.14) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(231,216,184,.08) 0 1px, transparent 1px),
    linear-gradient(115deg, transparent, rgba(255,255,255,.04), transparent);
  background-size: 31px 31px, 47px 47px, 100% 100%;
  mix-blend-mode: screen;
}

.mote {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(231,216,184,.62);
  box-shadow: 0 0 12px rgba(240,180,90,.5);
  transform: translate3d(var(--x), var(--y), 0);
  animation: drift var(--d) linear infinite;
}

@keyframes drift {
  from { translate: 0 10vh; opacity: 0; }
  20%, 80% { opacity: .65; }
  to { translate: 8vw -110vh; opacity: 0; }
}

.archive-spine {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: clamp(64px, 8vw, 112px);
  z-index: 15;
  background: linear-gradient(90deg, #050306, rgba(7,5,8,.88) 70%, transparent);
  border-right: 1px solid rgba(184,146,74,.45);
}

.spine-rule {
  position: absolute;
  left: 48%;
  top: 4vh;
  bottom: 4vh;
  width: 1px;
  background: linear-gradient(var(--old-brass), transparent 20%, var(--warm-gold), transparent 78%, var(--old-brass));
}

.spine-label {
  position: absolute;
  left: 14px;
  bottom: 8vh;
  writing-mode: vertical-rl;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: rgba(231,216,184,.68);
}

.room-index {
  position: absolute;
  top: 10vh;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  gap: 15px;
}

.index-mark {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(184,146,74,.55);
  background: rgba(42,20,46,.45);
  font-family: var(--mono);
  font-size: 10px;
  cursor: pointer;
  transition: background .35s ease, color .35s ease, transform .35s ease;
}

.index-mark.active {
  background: var(--old-brass);
  color: var(--urushi-black);
  transform: rotate(45deg);
}

.storehouse { position: relative; }

.room {
  position: relative;
  min-height: 100vh;
  padding: 8vh 7vw 8vh clamp(105px, 15vw, 210px);
  overflow: hidden;
  border-bottom: 1px solid rgba(184,146,74,.18);
  isolation: isolate;
}

.room::before {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(184,146,74,.28);
  clip-path: polygon(0 0, 21% 0, 21% 8px, 79% 8px, 79% 0, 100% 0, 100% 100%, 79% 100%, 79% calc(100% - 8px), 21% calc(100% - 8px), 21% 100%, 0 100%);
  pointer-events: none;
}

.sealed-door {
  display: grid;
  grid-template-columns: minmax(210px, 34vw) 1fr;
  gap: 6vw;
  align-items: center;
  background:
    radial-gradient(circle at 62% 45%, rgba(63,111,104,.22), transparent 34%),
    linear-gradient(120deg, #030204, var(--urushi-black) 48%, var(--deep-plum));
}

.lacquer-door {
  position: relative;
  height: 82vh;
  min-height: 520px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.07), transparent 15% 78%, rgba(240,180,90,.12)),
    radial-gradient(circle at 35% 28%, rgba(214,69,47,.17), transparent 25%),
    #09060a;
  border: 1px solid rgba(184,146,74,.58);
  box-shadow: inset 0 0 45px #000, 0 25px 80px rgba(0,0,0,.7);
  transition: transform .8s cubic-bezier(.2,.8,.2,1), filter .8s ease;
}

body.awake .lacquer-door { transform: translateX(-8%) scaleX(.92); filter: brightness(1.18); }

.keyhole {
  position: absolute;
  left: 50%;
  top: 48%;
  width: 18px;
  height: 58px;
  transform: translate(-50%, -50%);
  background: var(--warm-gold);
  clip-path: polygon(50% 0, 78% 16%, 70% 42%, 61% 42%, 75% 100%, 25% 100%, 39% 42%, 30% 42%, 22% 16%);
  box-shadow: 0 0 30px rgba(240,180,90,.8);
  transition: width .7s ease, height .7s ease, border-radius .7s ease;
}

body.awake .keyhole {
  width: min(42vw, 420px);
  height: 72vh;
  border-radius: 44% 44% 4px 4px;
  clip-path: polygon(50% 0, 88% 8%, 100% 100%, 0 100%, 12% 8%);
  background: radial-gradient(circle at 50% 45%, rgba(231,216,184,.75), rgba(240,180,90,.25) 30%, rgba(7,5,8,.2) 68%);
}

.vertical-title {
  position: absolute;
  right: 18px;
  top: 9%;
  writing-mode: vertical-rl;
  font-family: var(--jp);
  font-size: clamp(26px, 4vw, 56px);
  color: rgba(231,216,184,.42);
  letter-spacing: .22em;
}

.deco-corner { position: absolute; width: 84px; height: 84px; border-color: var(--old-brass); opacity: .75; }
.corner-a { left: 18px; top: 18px; border-left: 2px solid; border-top: 2px solid; }
.corner-b { right: 18px; bottom: 18px; border-right: 2px solid; border-bottom: 2px solid; }

.threshold-reveal { transform: translateX(-4vw); opacity: .2; transition: opacity .8s ease, transform .8s ease; }
body.awake .threshold-reveal { transform: translateX(0); opacity: 1; }

.parchment-label, .glow-paper, .ledger-page {
  background: linear-gradient(135deg, rgba(231,216,184,.96), rgba(231,216,184,.78));
  color: var(--deep-plum);
  border: 1px solid var(--old-brass);
  box-shadow: 0 24px 70px rgba(0,0,0,.45);
}

.parchment-label { max-width: 680px; padding: clamp(28px, 5vw, 72px); transform: rotate(-1.5deg); }

h1, h2 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: .08em;
  line-height: .92;
  margin: 0 0 24px;
}

h1 { font-size: clamp(58px, 11vw, 154px); color: var(--deep-plum); }
h2 { font-size: clamp(42px, 6.8vw, 96px); }
p { font-size: clamp(18px, 2vw, 25px); line-height: 1.45; }
.mono, .ledger-code { font-family: var(--mono); text-transform: uppercase; letter-spacing: .18em; font-size: 12px; }
.opening-instruction { position: absolute; right: 6vw; bottom: 6vh; font-family: var(--mono); color: rgba(231,216,184,.5); letter-spacing: .18em; }

.room-plate {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid rgba(184,146,74,.7);
  color: var(--warm-gold);
  font-family: var(--mono);
  letter-spacing: .16em;
  background: rgba(7,5,8,.62);
}

.room-plate span { color: var(--urushi-black); background: var(--old-brass); padding: 3px 6px; }

.ledger-hall { background: radial-gradient(circle at 75% 25%, rgba(184,146,74,.2), transparent 32%), linear-gradient(100deg, var(--deep-plum), var(--urushi-black)); }
.ledger-stack { position: relative; height: 70vh; margin-top: 7vh; transition: transform .2s linear; }
.ledger-page { position: absolute; padding: clamp(24px, 4vw, 58px); }
.page-one { left: 4vw; top: 2vh; width: min(720px, 58vw); transform: rotate(-4deg); }
.page-two { right: 4vw; bottom: 2vh; width: min(420px, 34vw); height: 56vh; transform: rotate(6deg); background: rgba(231,216,184,.88); }
.ruled-lines { height: 100%; background: repeating-linear-gradient(to bottom, transparent 0 27px, rgba(42,20,46,.28) 28px 29px); }
.jp-strip { position: absolute; right: 22px; top: 22px; writing-mode: vertical-rl; font-family: var(--jp); color: var(--vermilion); }
.fanburst { position: absolute; right: -8vw; top: -10vh; width: 42vw; aspect-ratio: 1; opacity: .35; background: conic-gradient(from 180deg, transparent 0 6deg, var(--old-brass) 7deg 9deg, transparent 10deg 16deg); border-radius: 50%; }

.cabinet-names { background: linear-gradient(145deg, #050306, #111015 45%, var(--oxidized-teal)); }
.cabinet-grid { margin-top: 8vh; display: grid; grid-template-columns: 1fr 1.35fr; gap: 18px; max-width: 980px; transform: perspective(900px) rotateY(-7deg); }
.drawer {
  min-height: 23vh;
  border: 1px solid rgba(184,146,74,.7);
  background: linear-gradient(180deg, #130c12, #050305);
  box-shadow: inset 0 0 30px rgba(240,180,90,.08), 0 18px 40px rgba(0,0,0,.38);
  cursor: pointer;
  position: relative;
  transition: transform .45s ease, box-shadow .45s ease;
}
.drawer.wide { grid-column: span 1; }
.drawer.open, .drawer:hover { transform: translateX(26px); box-shadow: inset 35px 0 60px rgba(240,180,90,.16), 0 22px 60px rgba(0,0,0,.5); }
.brass-pull { position: absolute; left: 50%; top: 45%; width: 90px; height: 24px; transform: translate(-50%, -50%); border: 2px solid var(--old-brass); border-radius: 50%; }
.drawer em { position: absolute; left: 20px; bottom: 18px; font-family: var(--mono); font-size: 12px; color: rgba(231,216,184,.68); }
.drawer-note { margin-top: 34px; color: var(--aged-parchment); font-family: var(--display); font-size: clamp(32px, 5vw, 76px); max-width: 820px; }

.velvet-shelf { background: radial-gradient(circle at 40% 70%, rgba(214,69,47,.18), transparent 35%), linear-gradient(110deg, var(--urushi-black), var(--deep-plum)); }
.shelf-track { position: relative; height: 42vh; margin-top: 10vh; border-bottom: 18px solid #1b0816; box-shadow: 0 20px 0 rgba(184,146,74,.55); transition: transform .2s linear; }
.scroll-tube { position: absolute; left: 8%; bottom: 38px; width: 46vw; height: 82px; border-radius: 50px; background: linear-gradient(90deg, #0b0808, var(--oxidized-teal), #0b0808); border: 1px solid var(--old-brass); }
.scroll-tube span { position: absolute; inset: 30px auto auto 42px; font-family: var(--mono); color: rgba(231,216,184,.7); letter-spacing: .16em; }
.washi-slip { position: absolute; padding: 22px 34px; background: var(--aged-parchment); color: var(--deep-plum); border: 1px solid var(--old-brass); font-family: var(--jp); box-shadow: 0 15px 35px rgba(0,0,0,.4); }
.slip-one { right: 20%; bottom: 98px; transform: rotate(8deg); }
.slip-two { right: 8%; bottom: 28px; transform: rotate(-5deg); }
.seal-stamp, .final-seal { display: grid; place-items: center; font-family: var(--jp); color: var(--vermilion); border: 5px solid var(--vermilion); }
.seal-stamp { position: absolute; right: 33%; bottom: 80px; width: 98px; height: 98px; font-size: 54px; opacity: 0; transform: scale(1.5) rotate(-15deg); transition: opacity .55s ease, transform .55s ease; }
.room.active .seal-stamp { opacity: .84; transform: scale(1) rotate(-10deg); }
.velvet-cushion { height: 34px; max-width: 70vw; margin: 0 auto; background: linear-gradient(90deg, transparent, #3a102b, #170711, transparent); filter: blur(8px); }
.velvet-shelf h2 { max-width: 980px; margin-top: 8vh; color: var(--aged-parchment); }

.open-drawer { min-height: 105vh; background: radial-gradient(circle at 55% 55%, rgba(240,180,90,.26), transparent 31%), linear-gradient(160deg, #020102, var(--urushi-black) 48%, #130914); }
.drawer-interior { margin: 10vh auto 0; max-width: 880px; padding: 28px; background: linear-gradient(180deg, rgba(184,146,74,.35), rgba(7,5,8,.9)); border: 1px solid var(--old-brass); box-shadow: inset 0 0 90px rgba(240,180,90,.18), 0 30px 90px #000; }
.glow-paper { padding: clamp(32px, 5vw, 70px); }
.seal-button { margin-top: 24px; padding: 14px 22px; background: var(--vermilion); border: 0; color: var(--aged-parchment); font-family: var(--mono); letter-spacing: .14em; cursor: pointer; }
.final-seal { position: absolute; right: 12vw; bottom: 10vh; width: 132px; height: 132px; font-size: 76px; opacity: 0; transform: scale(1.8) rotate(18deg); transition: opacity .5s ease, transform .5s ease; }
.final-seal.pressed { opacity: .9; transform: scale(1) rotate(-8deg); }

@media (max-width: 760px) {
  .sealed-door { grid-template-columns: 1fr; }
  .lacquer-door { min-height: 430px; height: 58vh; }
  .cabinet-grid { grid-template-columns: 1fr; transform: none; }
  .page-one, .page-two { position: relative; width: auto; left: auto; right: auto; top: auto; bottom: auto; margin: 22px 0; }
  .ledger-stack { height: auto; }
}