@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=Bodoni+Moda:opsz,wght@6..96,500;6..96,700&family=IBM+Plex+Sans+Condensed:wght@300;500&display=swap');

/* IBM Plex Sans Condensed** Condensed* Condense* from Google Fonts in light and medium weights */

:root {
  --obsidian: #050403;
  --leather: #17110B;
  --charcoal: #2B2721;
  --gold: #C8A24A;
  --brass: #7A5A22;
  --parchment: #F2E3B8;
  --display: 'Archivo Black', Impact, sans-serif;
  --accent: 'Bodoni Moda', Georgia, serif;
  --ui: 'IBM Plex Sans Condensed', 'Arial Narrow', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--obsidian); }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--parchment);
  background: var(--obsidian);
  font-family: var(--ui);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 4;
  background:
    radial-gradient(circle at 50% 45%, transparent 0 35%, rgba(5, 4, 3, 0.38) 66%, rgba(5, 4, 3, 0.9) 100%),
    linear-gradient(90deg, rgba(200, 162, 74, 0.04), transparent 18%, transparent 82%, rgba(200, 162, 74, 0.035));
  mix-blend-mode: screen;
}

.lacquer-field {
  position: fixed;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 18%, rgba(122, 90, 34, 0.18), transparent 28%),
    radial-gradient(circle at 78% 72%, rgba(43, 39, 33, 0.48), transparent 34%),
    linear-gradient(130deg, #050403 0%, #0a0705 48%, #17110B 100%);
  z-index: 0;
}

.leather-plane {
  position: absolute;
  inset: -15%;
  opacity: 0.65;
  will-change: transform;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(242, 227, 184, 0.08) 0 1px, transparent 2px 14px),
    radial-gradient(ellipse at 75% 60%, rgba(200, 162, 74, 0.08) 0 1px, transparent 2px 18px),
    repeating-radial-gradient(ellipse at 45% 54%, rgba(242, 227, 184, 0.045) 0 1px, transparent 2px 8px),
    repeating-linear-gradient(102deg, rgba(122, 90, 34, 0.08) 0 1px, transparent 1px 11px),
    linear-gradient(118deg, rgba(23, 17, 11, 0.94), rgba(5, 4, 3, 0.86));
  filter: contrast(145%) brightness(80%);
}

.leather-plane-a {
  clip-path: polygon(0 9%, 76% 0, 100% 37%, 91% 100%, 12% 85%);
  transform: translate3d(-2%, 0, 0) rotate(-5deg) scale(1.05);
}

.leather-plane-b {
  inset: 18% -20% -22% 36%;
  opacity: 0.42;
  clip-path: circle(42% at 48% 48%);
  transform: translate3d(0, 0, 0) rotate(12deg);
}

.dust-field {
  position: absolute;
  inset: 0;
  opacity: 0.75;
  will-change: transform;
}

.mote {
  position: fixed;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px rgba(200, 162, 74, 0.85);
  opacity: var(--o, 0.35);
  transform: translate3d(var(--x), var(--y), 0) scale(var(--s, 1));
  animation: floatMote var(--d, 16s) linear infinite;
}

@keyframes floatMote {
  from { margin-top: 8vh; filter: blur(0.5px); }
  to { margin-top: -28vh; filter: blur(1.5px); }
}

.hud-frame {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
  color: var(--gold);
}

.corner {
  position: absolute;
  width: clamp(36px, 6vw, 74px);
  height: clamp(36px, 6vw, 74px);
  opacity: 0.72;
}

.corner::before, .corner::after {
  content: '';
  position: absolute;
  background: var(--gold);
  box-shadow: 0 0 12px rgba(200, 162, 74, 0.18);
}

.corner::before { width: 100%; height: 1px; }
.corner::after { width: 1px; height: 100%; }
.corner-tl { left: 28px; top: 28px; }
.corner-tr { right: 28px; top: 28px; transform: rotate(90deg); }
.corner-bl { left: 28px; bottom: 28px; transform: rotate(-90deg); }
.corner-br { right: 28px; bottom: 28px; transform: rotate(180deg); }

.top-rule, .bottom-rule {
  position: absolute;
  left: 18vw;
  right: 18vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 162, 74, 0.42), transparent);
}

.top-rule { top: 38px; }
.bottom-rule { bottom: 38px; }

.coord {
  position: absolute;
  top: 50%;
  font: 300 11px/1 var(--ui);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(200, 162, 74, 0.62);
  white-space: nowrap;
}

.coord-left { left: 18px; transform: translateY(-50%) rotate(-90deg); transform-origin: left center; }
.coord-right { right: 18px; transform: translateY(-50%) rotate(90deg); transform-origin: right center; }

.side-stitches {
  position: absolute;
  top: 18vh;
  bottom: 18vh;
  left: 8.8vw;
  width: 1px;
  background: repeating-linear-gradient(to bottom, rgba(200, 162, 74, 0.42) 0 7px, transparent 7px 19px);
  opacity: 0.45;
}

.chapter-nav {
  position: fixed;
  right: 5.2vw;
  top: 50%;
  display: grid;
  gap: 22px;
  transform: translateY(-50%);
  pointer-events: auto;
}

.chapter-dot {
  position: relative;
  display: block;
  width: 11px;
  height: 11px;
  border: 1px solid rgba(200, 162, 74, 0.62);
  border-radius: 50%;
  text-decoration: none;
  color: var(--gold);
}

.chapter-dot span {
  position: absolute;
  right: 20px;
  top: -3px;
  font: 500 10px/1 var(--ui);
  letter-spacing: 0.2em;
  opacity: 0;
  transition: opacity 700ms ease, transform 700ms ease;
  transform: translateX(5px);
}

.chapter-dot.active { background: var(--gold); box-shadow: 0 0 18px rgba(200, 162, 74, 0.75); }
.chapter-dot.active span { opacity: 1; transform: translateX(0); }

.progress-rail {
  position: fixed;
  left: 5vw;
  top: 16vh;
  bottom: 16vh;
  width: 1px;
  background: rgba(122, 90, 34, 0.38);
}

.progress-rail span {
  display: block;
  width: 1px;
  height: var(--progress, 0%);
  background: linear-gradient(to bottom, var(--parchment), var(--gold), var(--brass));
  box-shadow: 0 0 18px rgba(200, 162, 74, 0.55);
}

.chambers { position: relative; z-index: 2; }

.chamber {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  isolation: isolate;
}

.chamber::after {
  content: '';
  position: absolute;
  inset: 10vh 12vw;
  border: 1px solid rgba(200, 162, 74, 0.08);
  pointer-events: none;
}

.threshold { display: grid; align-items: end; padding: 0 0 15vh 10vw; }

.wordmark-wrap { position: relative; will-change: transform; }

.micro-label {
  margin: 0 0 18px;
  font: 500 12px/1.4 var(--ui);
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: rgba(200, 162, 74, 0.66);
}

.wordmark {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4.4rem, 16vw, 18rem);
  line-height: 0.78;
  letter-spacing: -0.085em;
  text-transform: lowercase;
  color: var(--parchment);
  opacity: 0;
  filter: blur(18px) brightness(20%);
  text-shadow: 0 18px 0 rgba(23, 17, 11, 0.9), 0 0 40px rgba(200, 162, 74, 0.08);
  clip-path: inset(0 100% 0 0);
  transition: opacity 2600ms cubic-bezier(.16,1,.3,1), filter 2600ms cubic-bezier(.16,1,.3,1), clip-path 3200ms cubic-bezier(.16,1,.3,1);
}

.wordmark.revealed { opacity: 0.94; filter: blur(0) brightness(86%); clip-path: inset(0 0 0 0); }

.gold-caption, .final-caption {
  margin: 28px 0 0;
  max-width: 520px;
  font: 500 clamp(1.05rem, 2vw, 1.85rem)/1.15 var(--accent);
  color: var(--gold);
  letter-spacing: 0.03em;
  opacity: 0.78;
}

.baseline {
  position: absolute;
  left: 9vw;
  bottom: 14.2vh;
  width: 68vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 162, 74, 0.5), transparent);
  opacity: 0.42;
}

.drop-particle {
  position: fixed;
  top: -20px;
  left: 24vw;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--parchment);
  box-shadow: 0 0 22px var(--gold), 0 0 50px rgba(200, 162, 74, 0.7);
  opacity: 0;
  z-index: 6;
}

.drop-particle.fall { animation: ceremonialDrop 2800ms cubic-bezier(.68,0,.2,1) forwards 700ms; }

@keyframes ceremonialDrop {
  0% { transform: translateY(0); opacity: 0; }
  18% { opacity: 1; }
  82% { transform: translateY(73vh); opacity: 1; }
  100% { transform: translateY(73vh) scale(9, 0.35); opacity: 0; }
}

.grain { display: grid; place-items: center; }

.vertical-stroke {
  position: absolute;
  left: 33vw;
  top: 15vh;
  bottom: 12vh;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--gold), var(--brass), transparent);
  box-shadow: 0 0 24px rgba(200, 162, 74, 0.32);
}

.aperture {
  position: absolute;
  left: 14vw;
  top: 18vh;
  width: min(33vw, 430px);
  height: 64vh;
  overflow: hidden;
  border-left: 1px solid rgba(200, 162, 74, 0.5);
  border-right: 1px solid rgba(200, 162, 74, 0.16);
  box-shadow: inset 0 0 60px rgba(5, 4, 3, 0.72);
  will-change: transform;
}

.grain-surface {
  position: absolute;
  inset: -12%;
  background:
    radial-gradient(ellipse at 20% 12%, rgba(242, 227, 184, 0.18), transparent 16%),
    repeating-radial-gradient(ellipse at 56% 50%, rgba(200, 162, 74, 0.11) 0 1px, transparent 2px 13px),
    repeating-linear-gradient(86deg, rgba(242, 227, 184, 0.04) 0 1px, transparent 1px 8px),
    linear-gradient(150deg, #050403, #17110B 54%, #2B2721);
  animation: leatherBreath 12s ease-in-out infinite alternate;
}

@keyframes leatherBreath { to { transform: translate3d(-4%, 3%, 0) scale(1.06); filter: brightness(1.16); } }

.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  top: -12%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--parchment), var(--gold), transparent);
  box-shadow: 0 0 28px rgba(200, 162, 74, 0.88), 0 20px 60px rgba(200, 162, 74, 0.24);
  animation: scanLeather 8s cubic-bezier(.45,0,.2,1) infinite;
}

@keyframes scanLeather { 0%, 18% { top: -12%; opacity: 0; } 32%, 74% { opacity: 1; } 88%, 100% { top: 112%; opacity: 0; } }

.chamber-copy { position: absolute; max-width: 430px; }
.right-copy { right: 12vw; top: 30vh; }
.left-copy { left: 12vw; bottom: 18vh; }
.chamber-copy h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 11vw, 12rem);
  line-height: .8;
  letter-spacing: -0.07em;
  color: rgba(242, 227, 184, 0.88);
}
.chamber-copy p:last-child {
  margin: 22px 0 0;
  font: 300 1.05rem/1.8 var(--ui);
  letter-spacing: 0.08em;
  color: rgba(242, 227, 184, 0.62);
}

.breath { display: grid; place-items: center; }
.enso-stage { position: relative; width: min(58vw, 720px); height: min(58vw, 720px); will-change: transform; }
.enso-ring {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background:
    conic-gradient(from 20deg, transparent 0 14deg, rgba(200, 162, 74, 0.15) 20deg, rgba(242, 227, 184, 0.94) 54deg, rgba(122, 90, 34, 0.68) 120deg, transparent 190deg, rgba(200, 162, 74, 0.72) 268deg, transparent 326deg 360deg);
  -webkit-mask: radial-gradient(circle, transparent 0 56%, #000 57% 62%, transparent 64%);
  mask: radial-gradient(circle, transparent 0 56%, #000 57% 62%, transparent 64%);
  filter: blur(0.4px) drop-shadow(0 0 24px rgba(200, 162, 74, 0.35));
  opacity: 0.16;
  transform: rotate(-18deg) scale(0.84);
  transition: opacity 1800ms ease, transform 2200ms cubic-bezier(.16,1,.3,1);
}
.enso-ring.active { opacity: 0.78; transform: rotate(8deg) scale(1); }
.enso-ring::after {
  content: '';
  position: absolute;
  inset: -8%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 0%, rgba(242, 227, 184, 0.95) 0 2px, transparent 3px 100%);
  animation: ringDust 10s linear infinite;
}
@keyframes ringDust { to { transform: rotate(360deg); } }
.rake-curve {
  position: absolute;
  inset: 22% 12% 28% 12%;
  border-bottom: 1px solid rgba(200, 162, 74, 0.34);
  border-radius: 0 0 50% 50%;
  transform: rotate(-8deg);
}
.rake-curve::before, .rake-curve::after {
  content: '';
  position: absolute;
  left: 9%;
  right: 9%;
  bottom: 16px;
  border-bottom: 1px solid rgba(122, 90, 34, 0.42);
  border-radius: 0 0 50% 50%;
}
.rake-curve::after { left: 18%; right: 18%; bottom: 32px; opacity: .65; }

.seal { display: grid; place-items: center; }
.seal-box { text-align: center; will-change: transform; }
.stamp {
  display: inline-grid;
  place-items: center;
  min-width: min(72vw, 520px);
  min-height: 132px;
  padding: 28px 36px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-family: var(--display);
  font-size: clamp(2.4rem, 6.6vw, 6.8rem);
  line-height: .8;
  letter-spacing: -0.08em;
  text-transform: lowercase;
  background: radial-gradient(circle at 50% 0, rgba(200, 162, 74, 0.12), transparent 58%), rgba(5, 4, 3, 0.38);
  box-shadow: inset 0 0 0 6px rgba(5, 4, 3, 0.74), 0 0 42px rgba(200, 162, 74, 0.14);
}
.punched-dots {
  position: absolute;
  right: 15vw;
  bottom: 18vh;
  width: 150px;
  height: 150px;
  background-image: radial-gradient(circle, rgba(200, 162, 74, 0.9) 0 2px, transparent 3px);
  background-size: 24px 24px;
  opacity: 0.32;
  clip-path: circle(50%);
}

@media (max-width: 760px) {
  .coord, .side-stitches { display: none; }
  .threshold { padding-left: 8vw; }
  .aperture { left: 8vw; width: 38vw; }
  .right-copy { right: 8vw; max-width: 45vw; }
  .left-copy { left: 8vw; }
  .enso-stage { width: 86vw; height: 86vw; }
  .chapter-nav { right: 7vw; }
}