/**
 * Scroll reveal — card-style enter on viewport (site setting: scroll_reveal_*).
 * Targets are marked in JS; hero/menu/footer are excluded.
 */
:root {
  --scroll-reveal-duration: 560ms;
  --scroll-reveal-stagger: 80ms;
  --scroll-reveal-distance: 28px;
  --scroll-reveal-scale: 0.985;
  --scroll-reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --scroll-reveal-shimmer: rgba(255, 255, 255, 0.42);
}

html.js-scroll-reveal .scroll-reveal {
  opacity: 0;
  transform: translate3d(0, var(--scroll-reveal-distance), 0) scale(var(--scroll-reveal-scale));
  transition:
    opacity var(--scroll-reveal-duration) var(--scroll-reveal-ease),
    transform var(--scroll-reveal-duration) var(--scroll-reveal-ease);
  transition-delay: calc(var(--scroll-reveal-i, 0) * var(--scroll-reveal-stagger));
  will-change: opacity, transform;
}

html.js-scroll-reveal .scroll-reveal.is-scroll-revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  will-change: auto;
}

html.js-scroll-reveal .scroll-reveal--card:not(.is-scroll-revealed) {
  position: relative;
}

html.js-scroll-reveal .scroll-reveal--card:not(.is-scroll-revealed)::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
  opacity: 0.55;
  background: linear-gradient(
    105deg,
    transparent 0%,
    transparent 40%,
    var(--scroll-reveal-shimmer) 50%,
    transparent 60%,
    transparent 100%
  );
  background-size: 220% 100%;
  background-position: 120% 0;
  animation: scroll-reveal-shimmer 1.35s ease-in-out infinite;
}

html.js-scroll-reveal .scroll-reveal--card.is-scroll-revealed::after {
  opacity: 0;
  animation: none;
  transition: opacity 0.28s ease;
}

@keyframes scroll-reveal-shimmer {
  0% { background-position: 120% 0; }
  100% { background-position: -120% 0; }
}

@media (prefers-reduced-motion: reduce) {
  html.js-scroll-reveal .scroll-reveal {
    opacity: 1;
    transform: none;
    transition: none;
    will-change: auto;
  }

  html.js-scroll-reveal .scroll-reveal--card::after {
    display: none;
  }
}

/* Mobile WebKit: IntersectionObserver often misses grid cards — never hide content behind opacity:0. */
@media (max-width: 768px) {
  html.js-scroll-reveal .scroll-reveal:not(.is-scroll-revealed) {
    opacity: 1;
    transform: none;
    will-change: auto;
  }

  html.js-scroll-reveal .scroll-reveal--card:not(.is-scroll-revealed)::after {
    display: none;
  }
}