* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  overflow: hidden;
}
a { color: inherit; text-decoration: none; }

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: #070605;
}
.material, .material-light, .material-grain, .vignette {
  position: absolute;
  inset: 0;
}
.surface-layer {
  background-image: url("../../../assets/materials/surface-curtain.webp");
  background-size: cover;
  background-position: 42% 50%;
  opacity: 0.28;
  filter: saturate(0.75) contrast(0.88) brightness(0.76);
  transform: scale(1.08);
  animation: slowSurfaceOne 26s ease-in-out infinite alternate;
  mix-blend-mode: screen;
}
.room-layer {
  background-image: url("../../../assets/materials/surface-doorway.webp");
  background-size: cover;
  background-position: 62% 48%;
  opacity: 0.34;
  filter: contrast(0.95) brightness(0.72);
  transform: scale(1.08);
  animation: slowSurfaceTwo 34s ease-in-out infinite alternate;
  mix-blend-mode: screen;
}
.light-layer {
  background-image: url("../../../assets/materials/light-film-burn.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.08;
  filter: blur(14px) saturate(0.75) brightness(0.65);
  transform: scale(1.06);
  animation: lightBreath 22s ease-in-out infinite;
  mix-blend-mode: screen;
}
.grain-layer {
  inset: -15%;
  background-image: url("../../../assets/materials/grain-large.webp");
  background-size: 650px 650px;
  opacity: 0.04;
  mix-blend-mode: soft-light;
  animation: grainDrift 28s ease-in-out infinite alternate;
  will-change: transform;
}
.vignette-layer {
  background: radial-gradient(circle at center, transparent 18%, rgba(0,0,0,0.35) 55%, rgba(0,0,0,0.88) 100%);
}

.threshold {
  position: relative;
  z-index: 1;
  height: 100svh;
  min-height: 620px;
  display: grid;
  place-items: center;
  padding: 2rem;
}
.threshold-content {
  width: min(82vw, 760px);
  text-align: center;
  transform: translate(-5vw, -0.4rem);
}
.eyebrow {
  margin-bottom: 2.7rem;
  font-size: 0.66rem;
  font-weight: 300;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(245, 243, 238, 0.4);
}
.site-title {
  font-family: var(--font-serif);
  font-size: clamp(2.65rem, 5.4vw, 5.6rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;

  position: relative;
  left: -0.4rem;
  text-shadow:
    0 0 28px rgba(245, 243, 238, 0.13),
    0 0 120px rgba(245, 243, 238, 0.055);
}
.site-title span { display: block; }
.section-orbits {
  margin: 5.4rem auto 0;
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: center;
  gap: clamp(1.4rem, 4vw, 4.25rem);
}
.orbit-link {
  position: relative;
  font-size: var(--label-size);
  font-weight: 300;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(245, 243, 238, 0.64);
  transition: color 900ms var(--ease-soft), text-shadow 900ms var(--ease-soft), transform 900ms var(--ease-soft);
}
.orbit-link::before {
  content: "";
  position: absolute;
  top: -1.25rem;
  left: 50%;
  width: 0.42rem;
  height: 0.42rem;
  border: 1px solid rgba(245, 243, 238, 0.38);
  border-radius: 999px;
  transform: translateX(-50%);
  background: rgba(245, 243, 238, 0.08);
  transition: width 900ms var(--ease-soft), height 900ms var(--ease-soft), background 900ms var(--ease-soft), box-shadow 900ms var(--ease-soft);
}
.orbit-link:hover {
  color: rgba(245, 243, 238, 0.94);
  text-shadow: 0 0 28px rgba(245, 243, 238, 0.18);
  transform: translateY(-3px);
}
.orbit-link:hover::before {
  width: 0.72rem;
  height: 0.72rem;
  background: rgba(245, 243, 238, 0.5);
  box-shadow: 0 0 32px rgba(245, 243, 238, 0.3);
}
.archive-statement {
  margin-top: 5.7rem;
  font-family: var(--font-serif);
  font-size: var(--statement-size);
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(245, 243, 238, 0.82);
}
.reveal {
  opacity: 0;
  filter: blur(14px);
  transform: translateY(16px);
  transition: opacity var(--intro-duration) var(--ease-soft), filter var(--intro-duration) var(--ease-soft), transform var(--intro-duration) var(--ease-soft);
}
.reveal.is-visible {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0);
}

@keyframes slowSurfaceOne {
  0% { transform: scale(1.08) translate3d(-1.2%, -0.8%, 0); }
  100% { transform: scale(1.12) translate3d(1.2%, 0.8%, 0); }
}
@keyframes slowSurfaceTwo {
  0% { transform: scale(1.12) translate3d(1%, -0.8%, 0); }
  100% { transform: scale(1.16) translate3d(-1%, 1%, 0); }
}
@keyframes lightBreath {
  0%, 100% { opacity: 0.12; transform: scale(1.06); }
  50% { opacity: 0.24; transform: scale(1.11); }
}
@keyframes grainDrift {
   0%{
        transform:
            translate3d(-1.2%,-0.8%,0)
            scale(1.04);
    }

    50%{
        transform:
            translate3d(1%,1.5%,0)
            scale(1.05);
    }

    100%{
        transform:
            translate3d(-0.6%,2%,0)
            scale(1.04);
    }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    filter: none;
    transform: none;
    transition: none;
  }

  .room-layer,
  .surface-layer,
  .light-layer,
  .grain-layer {
    animation: none;
  }
}

@media (max-width: 760px) {
  :root { --title-size: clamp(3.1rem, 15vw, 5.4rem); }
  .threshold { min-height: 600px; }
  .site-title { letter-spacing: 0.15em; }
  .section-orbits {
    grid-template-columns: 1fr;
    gap: 2.2rem;
    margin-top: 4.5rem;
  }
  .orbit-link::before { top: -0.95rem; }
  .archive-statement { margin-top: 1.6rem; }
}