:root {
  color-scheme: light;
  background: #fbfaf6;
  color: #454740;
  font-family:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  padding: 24px;
  place-items: center;
}

.construction {
  display: flex;
  max-width: 100%;
  align-items: center;
  gap: 16px;
}

.construction-icon {
  display: block;
  position: relative;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.construction-icon::before {
  position: absolute;
  inset: 0;
  background: url("/assets/images/icon-green.png") center / contain no-repeat;
  content: "";
}

/* Load every frame before the first hover. */
.construction-icon::after {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  background-image:
    url("/assets/images/icon-state-1.png"),
    url("/assets/images/icon-state-2.png"),
    url("/assets/images/icon-state-3.png"),
    url("/assets/images/icon-state-4.png");
  content: "";
}

.construction-icon img {
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
}

.construction-icon:focus-visible {
  outline: 2px solid #214e35;
  outline-offset: 6px;
}

@media (prefers-reduced-motion: no-preference) {
  .construction-icon:hover::before,
  .construction-icon:focus-visible::before {
    animation: construction-icon-cycle 1125ms steps(1, end) infinite;
  }
}

@keyframes construction-icon-cycle {
  0% {
    background-image: url("/assets/images/icon-green.png");
    transform: translateY(0) rotate(0);
  }

  20% {
    background-image: url("/assets/images/icon-state-1.png");
    transform: translateY(0) rotate(0);
  }

  40% {
    background-image: url("/assets/images/icon-state-2.png");
    transform: translateY(-1px) rotate(-4deg);
  }

  60% {
    background-image: url("/assets/images/icon-state-3.png");
    transform: translateY(0) rotate(3deg);
  }

  80%,
  100% {
    background-image: url("/assets/images/icon-state-4.png");
    transform: translateY(-1px) rotate(0);
  }
}

.construction h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.01em;
}