:root {
  --bg: #050609;
  --fg: #efe7db;
  --fg-soft: rgba(239, 231, 219, 0.72);
  --fg-faint: rgba(239, 231, 219, 0.22);
  --display-font: "Bodoni Moda", serif;
  --ui-font: "Sora", sans-serif;
  --header-height: 5rem;
  --page-pad: clamp(1rem, 2.4vw, 2.4rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
}

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  color: var(--fg);
  font-family: var(--ui-font);
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid rgba(255, 247, 236, 0.9);
  outline-offset: 0.24rem;
}

.site-ui {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--page-pad);
  pointer-events: none;
  mix-blend-mode: difference;
  color: #fff;
}

.brand,
.ui-status {
  pointer-events: auto;
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.brand {
  font-weight: 700;
}

.ui-status {
  display: grid;
  grid-auto-flow: column;
  gap: 1rem;
  align-items: center;
}

.experience,
.world-shell {
  position: relative;
}

.world-shell {
  min-height: 100svh;
}

.world-track {
  position: relative;
  margin-top: -100vh;
}

.scroll-phase {
  min-height: 100vh;
}

.world-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg);
}

.canvas-shell,
.poster-copy {
  position: absolute;
  inset: 0;
}

.canvas-shell {
  z-index: 1;
  pointer-events: none;
}

#sceneCanvas {
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

.poster-copy {
  z-index: 2;
  pointer-events: none;
}

.hero-lockup,
.phase-stack {
  position: absolute;
}

.hero-lockup {
  left: clamp(1rem, 4vw, 4rem);
  bottom: clamp(1.2rem, 5vh, 3.8rem);
  max-width: min(24rem, 36vw);
}

.hero-kicker,
.phase-kicker,
.phase-copy h2,
.reset-link {
  margin: 0;
}

.hero-kicker,
.phase-kicker {
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--fg-soft);
}

.hero-lockup h1 {
  margin: 0.6rem 0 0;
  font-family: var(--display-font);
  font-size: clamp(4.8rem, 10vw, 9rem);
  line-height: 0.82;
  letter-spacing: -0.08em;
  text-transform: lowercase;
}

.phase-stack {
  right: clamp(1rem, 4vw, 4rem);
  top: clamp(6rem, 12vh, 8rem);
  width: min(32rem, 42vw);
  text-align: right;
}

.phase-copy {
  position: absolute;
  inset: 0;
  opacity: var(--copy-alpha, 0);
  transform:
    translate3d(0, var(--copy-shift-y, 2rem), 0)
    scale(var(--copy-scale, 0.985));
  transition: opacity 0.24s linear;
}

.phase-copy h2 {
  margin-top: 0.8rem;
  font-family: var(--display-font);
  font-size: clamp(2.4rem, 4.8vw, 4.8rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
  text-transform: lowercase;
  color: var(--fg);
}

.reset-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.1rem;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  pointer-events: auto;
  color: var(--fg-soft);
}

.reset-link::before {
  content: "";
  width: 1.8rem;
  height: 1px;
  background: currentColor;
}

@media (max-width: 980px) {
  .phase-stack {
    width: min(26rem, 48vw);
  }

  .phase-copy h2 {
    font-size: clamp(2rem, 4.6vw, 3.8rem);
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 4rem;
  }

  .world-track {
    position: relative;
    margin-top: -100vh;
  }

  .world-shell {
    min-height: 100svh;
  }

  .scroll-phase {
    min-height: 100vh;
  }

  .site-ui {
    padding: 0 1rem;
  }

  .brand,
  .ui-status,
  .hero-kicker,
  .phase-kicker {
    font-size: 0.6rem;
    letter-spacing: 0.24em;
  }

  .hero-lockup {
    left: 1rem;
    right: 1rem;
    max-width: 100%;
    bottom: 1.2rem;
  }

  .hero-lockup h1 {
    font-size: clamp(4rem, 16vw, 5.6rem);
  }

  .phase-stack {
    left: 1rem;
    right: 1rem;
    top: 5.4rem;
    width: auto;
    text-align: left;
  }

  .phase-copy h2 {
    font-size: clamp(2rem, 9vw, 3rem);
    max-width: 12ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}