:root {
  color-scheme: light;
  background: #ded2be;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

.video-screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  background: #000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.loop-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

body[data-screen="video"] .video-screen {
  opacity: 1;
}

body[data-screen="video"] .landscape {
  visibility: hidden;
}

body[data-screen="video"] .landscape__mountains,
body[data-screen="video"] .race-brand__logo,
body[data-screen="video"] .sponsors__grid img {
  animation-play-state: paused;
}

.start-playback {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  z-index: 20;
  transform: translateX(-50%);
  padding: 0.85rem 1.5rem;
  border: 1px solid #fff;
  border-radius: 999px;
  color: #fff;
  background: #403525;
  font: 600 1rem/1.3 system-ui, sans-serif;
  cursor: pointer;
}

.start-playback[hidden] {
  display: none;
}

.landscape {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

.landscape__background {
  position: absolute;
  inset: 0;
  z-index: -3;
  background: #ded2be url("./assets/fondo.png") center / cover no-repeat;
}

.landscape__mountains {
  position: absolute;
  z-index: -2;
  left: -24px;
  bottom: -24px;
  width: calc(100% + 48px);
  height: 80%;
  transform-origin: 50% 100%;
  animation: mountain-drift 22s ease-in-out infinite alternate;
  will-change: transform;
  pointer-events: none;
  user-select: none;
}

.landscape__mountains img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.race-brand {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(56vw, 78svh);
  transform: translate(-50%, -50%);
}

.race-brand__title {
  margin: 0;
  line-height: 0;
}

.race-brand__logo {
  display: block;
  width: 100%;
  height: auto;
  filter: brightness(0) invert(1)
    drop-shadow(0 2px 3px rgb(26 21 14 / 65%))
    drop-shadow(0 8px 24px rgb(26 21 14 / 30%));
  user-select: none;
  animation: logo-breathe 8s ease-in-out infinite;
  transform-origin: center;
}

.landscape::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgb(49 42 30 / 52%),
    rgb(41 35 26 / 44%) 50%,
    rgb(28 24 18 / 28%)
  );
  pointer-events: none;
}

.sponsors {
  position: absolute;
  inset: 3.5% 3.5%;
}

.sponsors__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: repeat(6, minmax(0, 1fr));
  gap: 2.2svh 1.3vw;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sponsors__grid li {
  display: flex;
  align-items: center;
  justify-content: center;
  grid-column: var(--column) / span 2;
  grid-row: var(--row);
  min-width: 0;
  min-height: 0;
}

.sponsors__grid img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 1px 2px rgb(26 21 14 / 70%))
    drop-shadow(0 3px 10px rgb(26 21 14 / 25%));
  user-select: none;
  animation: sponsor-float var(--float-duration, 7s) ease-in-out infinite;
  animation-delay: calc(var(--column) * -0.33s - var(--row) * 0.47s);
  transform-origin: center;
}

.sponsors__grid li:nth-child(3n + 2) {
  --float-duration: 8.3s;
}

.sponsors__grid li:nth-child(3n) {
  --float-duration: 9.1s;
}

@keyframes logo-breathe {
  0%, 100% {
    transform: scale(0.97);
  }
  50% {
    transform: scale(1);
  }
}

@keyframes sponsor-float {
  0%, 100% {
    transform: translate3d(0, 3px, 0) scale(0.98);
  }
  50% {
    transform: translate3d(0, -3px, 0) scale(1);
  }
}

@keyframes mountain-drift {
  from {
    transform: translate3d(-7px, 5px, 0) scale(1.015);
  }
  to {
    transform: translate3d(7px, -5px, 0) scale(1.035);
  }
}

@media (max-aspect-ratio: 4/5) {
  .landscape__mountains {
    height: 70%;
  }

  .race-brand {
    width: 48vw;
  }

  .sponsors {
    inset: 3% 3%;
  }

  .sponsors__grid {
    grid-template-rows: repeat(8, minmax(0, 1fr));
    gap: 1.5svh 1vw;
  }

  .sponsors__grid li {
    grid-column: var(--portrait-column) / span var(--portrait-span);
    grid-row: var(--portrait-row);
  }
}

@media (prefers-reduced-motion: reduce) {
  .video-screen {
    transition: none;
  }
  .landscape__mountains,
  .race-brand__logo,
  .sponsors__grid img {
    animation: none;
    transform: none;
    will-change: auto;
  }
}