:root {
  --bg: #03050a;
  --ink: #f5fbff;
  --cyan: #6ee7ff;
  --blue: #2d7cff;
  --green: #a8ffdf;
  --progress: 0;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% 38%, rgba(110, 231, 255, 0.11), transparent 28rem),
    linear-gradient(180deg, #020307 0%, #07101a 48%, #020307 100%);
  font-family: "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

.site {
  min-height: 640svh;
}

#scene {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
}

.atmosphere {
  position: fixed;
  inset: -15%;
  z-index: 2;
  pointer-events: none;
  opacity: 0.38;
  background:
    radial-gradient(circle at calc(42% + var(--progress) * 18%) 42%, rgba(110, 231, 255, 0.16), transparent 24rem),
    radial-gradient(circle at 55% 62%, rgba(45, 124, 255, 0.09), transparent 26rem);
  filter: blur(34px);
  mix-blend-mode: screen;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  opacity: 0.1;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.07) 0 1px, transparent 1px 7px);
  mix-blend-mode: overlay;
}

.brand {
  position: fixed;
  left: clamp(1.1rem, 5vw, 4.5rem);
  top: clamp(1.2rem, 5.5svh, 4.2rem);
  z-index: 6;
  margin: 0;
  color: var(--ink);
  font-size: clamp(4.2rem, 12vw, 12rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 0.82;
  pointer-events: none;
  text-shadow:
    0 0 40px rgba(110, 231, 255, 0.18),
    0 0 88px rgba(45, 124, 255, 0.12);
  transform: translateY(calc(var(--progress) * -1.5rem));
}

.progress {
  position: fixed;
  right: clamp(0.8rem, 2vw, 1.35rem);
  top: 50%;
  z-index: 6;
  width: 1px;
  height: min(34svh, 16rem);
  transform: translateY(-50%);
  background: rgba(245, 251, 255, 0.14);
  pointer-events: none;
}

.progress span {
  position: absolute;
  inset: 0 0 auto;
  height: calc(var(--progress) * 100%);
  background: linear-gradient(180deg, var(--cyan), var(--green), var(--blue));
  box-shadow: 0 0 24px rgba(110, 231, 255, 0.5);
}

.scroll-space {
  height: 640svh;
}

.fallback-map {
  position: fixed;
  left: 50%;
  top: 57%;
  z-index: 0;
  width: min(78vw, 54rem);
  aspect-ratio: 1.7;
  border: 1px solid rgba(245, 251, 255, 0.16);
  border-radius: 1.5rem;
  transform:
    translate(-50%, -50%)
    perspective(900px)
    rotateX(64deg)
    rotateZ(calc(-10deg + var(--progress) * 22deg));
  background:
    radial-gradient(circle at 50% 50%, rgba(110, 231, 255, 0.18), transparent 36%),
    linear-gradient(145deg, rgba(245, 251, 255, 0.12), rgba(245, 251, 255, 0.025));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 42px 130px rgba(0, 0, 0, 0.65),
    0 0 100px rgba(110, 231, 255, 0.12);
  overflow: hidden;
}

.fallback-map::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 251, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 251, 255, 0.08) 1px, transparent 1px);
  background-size: 2.5rem 2.5rem;
  mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 84%);
}

.fallback-route {
  position: absolute;
  left: 10%;
  top: 34%;
  width: 80%;
  height: 42%;
  border-top: 0.34rem solid rgba(110, 231, 255, 0.9);
  border-right: 0.34rem solid rgba(110, 231, 255, 0.68);
  border-radius: 50%;
  filter: drop-shadow(0 0 22px rgba(110, 231, 255, 0.65));
  transform: rotate(-12deg) scale(calc(0.84 + var(--progress) * 0.24));
}

body.has-webgl .fallback-map {
  display: none;
}

@media (max-width: 720px) {
  .site,
  .scroll-space {
    min-height: 600svh;
    height: 600svh;
  }

  .brand {
    left: 1.1rem;
    top: max(2.15rem, calc(env(safe-area-inset-top) + 1.2rem));
    font-size: clamp(4rem, 22vw, 6.25rem);
  }

  .progress {
    right: 0.65rem;
    height: 24svh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site,
  .scroll-space {
    min-height: 100svh;
    height: 100svh;
  }

  .progress {
    display: none;
  }
}