/*
 * Tech Sutro — Animations
 * Bold Tech / Dark Glass — subtle, GPU-friendly reveal-on-scroll
 * driven by animations.js (IntersectionObserver adds `.is-visible`
 * to every `.reveal` element). Transform + opacity only.
 */

/* ==================================================================
   BASE REVEAL STATE
   ================================================================== */

.reveal {
  opacity: 0;
  transform: translate3d(0, 28px, 0);

  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0s);

  will-change: opacity, transform;
}

/* Revealed state. */
.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* ==================================================================
   STAGGERED CHILDREN
   ================================================================== */

.reveal .reveal-child {
  opacity: 0;
  transform: translate3d(0, 16px, 0);

  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible .reveal-child {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Stagger delays. */
.reveal .reveal-child:nth-child(1) { transition-delay: 0.05s; }
.reveal .reveal-child:nth-child(2) { transition-delay: 0.1s; }
.reveal .reveal-child:nth-child(3) { transition-delay: 0.15s; }
.reveal .reveal-child:nth-child(4) { transition-delay: 0.2s; }
.reveal .reveal-child:nth-child(5) { transition-delay: 0.25s; }

/* ==================================================================
   REDUCED MOTION — show everything immediately
   ================================================================== */

@media (prefers-reduced-motion: reduce) {

  .reveal,
  .reveal .reveal-child {
    opacity: 1;
    transform: none;
    transition: none;
  }

}