:root {
  color-scheme: dark;
  --charcoal: #101316;
  --ivory: #f4f0e9;
  --red: #d63832;
  background: var(--charcoal);
  color: var(--ivory);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.scene {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto 1.35fr;
  justify-items: center;
  min-height: 100vh;
  min-height: 100svh;
  padding: 2rem clamp(0.5rem, 4vw, 2rem);
  isolation: isolate;
  background: var(--charcoal);
}

.landscape {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 10%, #20272c55, transparent 64%),
    var(--charcoal);
  animation: landscape-arrive 2s ease-out both;
}

.horizon {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 27% 1.5% at 50% 66%, #e28d6533, transparent 100%),
    radial-gradient(ellipse 45% 10% at 50% 66%, #b15f3d16, transparent 100%),
    radial-gradient(ellipse 75% 29% at 50% 66%, #8c3b2912, transparent 100%);
}

.ground {
  position: absolute;
  inset: 66% 0 0;
  background: linear-gradient(to bottom, #0b0e1000, #0b0e10 46%, #090c0e);
}

.road {
  position: absolute;
  top: 66%;
  bottom: -1px;
  left: 50%;
  width: min(100%, 90rem);
  transform: translateX(-50%);
}

.road__surface {
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0, 82% 100%, 18% 100%);
  background: linear-gradient(to bottom, #17171900, #17171966 20%, #16181b);
}

.road__edge {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, #d638321a, var(--red) 42%, #d6383273);
  opacity: 0.58;
}

.road__edge--left {
  clip-path: polygon(49.95% 0, 50% 0, 18.23% 100%, 18% 100%);
}

.road__edge--right {
  clip-path: polygon(50% 0, 50.05% 0, 82% 100%, 81.77% 100%);
}

.road__markings {
  position: absolute;
  inset: 0;
  opacity: 0.23;
}

.road__markings i {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, #b5aaa1, #b5aaa188);
  clip-path: polygon(35% 0, 65% 0, 100% 100%, 0 100%);
}

.road__markings i:nth-child(1) { top: 5%; width: 1px; height: 0.6%; --lane-delay: 0s; }
.road__markings i:nth-child(2) { top: 12%; width: 2px; height: 1.2%; --lane-delay: -1s; }
.road__markings i:nth-child(3) { top: 24%; width: 3px; height: 2.2%; --lane-delay: -2s; }
.road__markings i:nth-child(4) { top: 41%; width: 4px; height: 4%; --lane-delay: -3s; }
.road__markings i:nth-child(5) { top: 65%; width: 6px; height: 7%; --lane-delay: -4s; }
.road__markings i:nth-child(6) { top: 94%; width: 9px; height: 12%; --lane-delay: -5s; }

.wordmark {
  grid-row: 2;
  margin: 0;
  max-width: 100%;
  font-size: clamp(1.625rem, 14vw, 10rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.055em;
  text-align: center;
  overflow-wrap: anywhere;
  animation: wordmark-arrive 2s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes landscape-arrive {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes wordmark-arrive {
  from { opacity: 0; transform: translateY(0.12em); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes lane-forward {
  0% {
    opacity: 0;
    transform: translate(-50%, 0) scale(0.035);
  }
  10% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translate(-50%, 950%) scale(1.1);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .road__markings i:nth-child(n) {
    /* A 950% translation of this 12%-high dash clears the road before looping. */
    top: 0;
    width: 12px;
    height: 12%;
    transform-origin: 50% 0;
    animation: lane-forward 6s cubic-bezier(0.65, 0, 0.9, 0.4) infinite;
    animation-delay: var(--lane-delay);
  }
}

@media (prefers-reduced-motion: reduce) {
  .landscape,
  .wordmark,
  .road__markings i {
    animation: none;
  }
}