:root {
  /* Sampled from first frame of background.mp4; adjust if the source video changes */
  --first-frame-color: #081c3a;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  background-color: var(--first-frame-color);
}

.bg-video {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 1s ease;
  pointer-events: none;
}

.bg-video.is-visible {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .bg-video {
    display: none;
  }
}