landing_page/qdrant-landing/themes/qdrant-2024/assets/css/partials/_scroll-reveal.scss

// Scroll reveal animations
// Entry: CSS animation (slide-up + fade-in) — keeps translateY out of the
// static hidden state so removing .revealed never shifts layout and can't
// cause an intersection-observer feedback loop.
// Exit: opacity-only CSS transition — smooth fade, no position change.

@keyframes reveal-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

// Fallback: show content if JS hasn't loaded
[data-reveal] {
  opacity: 1;
  transform: none;
}

// Only apply hidden state when JS is ready
.js-loaded [data-reveal] {
  opacity: 0;
  transition: opacity 0.5s ease-out;
  will-change: opacity, transform;
}

.js-loaded [data-reveal].revealed {
  opacity: 1;
  animation: reveal-in 0.6s ease-out backwards;
}

// Stagger delays for grouped items
.js-loaded [data-reveal-delay="1"] { transition-delay: 0.1s; animation-delay: 0.1s; }
.js-loaded [data-reveal-delay="2"] { transition-delay: 0.2s; animation-delay: 0.2s; }
.js-loaded [data-reveal-delay="3"] { transition-delay: 0.3s; animation-delay: 0.3s; }
.js-loaded [data-reveal-delay="4"] { transition-delay: 0.4s; animation-delay: 0.4s; }

// Respect reduced motion preference
@media (prefers-reduced-motion: reduce) {
  .js-loaded [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
    animation: none;
  }
}