/* ================================================
   PRSNQA — SCROLL ANIMATIONS
   animations.css
   Uses Intersection Observer — no library needed.
   Add class 'reveal' to any element to animate it in.
   ================================================ */

/* Base reveal state (hidden) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Visible state (added by JS) */
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal-stagger > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.19s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.26s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.33s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.40s; }
.reveal-stagger > *:nth-child(7) { transition-delay: 0.47s; }

/* Variant: fade only (no vertical movement) */
.reveal-fade {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-fade.visible { opacity: 1; }

/* Variant: slide from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Respect user's reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-fade,
  .reveal-left {
    opacity: 1;
    transform: none;
    transition: none;
  }
}