/* Ambient background glow + scroll-reveal. reveal.js toggles .is-visible
   once a .reveal element enters the viewport; this file owns the transition. */
@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-9px);
  }
}

.floaty {
  animation: floaty 6s ease-in-out infinite;
}
.floaty--delayed {
  animation-delay: 0.8s;
}

.ambient-glow {
  position: fixed;
  top: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  max-width: 200vw;
  height: 520px;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--color-accent) 22%, transparent), transparent);
  filter: blur(30px);
  pointer-events: none;
  z-index: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .floaty {
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}