/* ══════════════════════════════════════════════════════════════════════
   SCROLL REVEAL
   ══════════════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--dur-reveal) var(--ease-out),
    transform var(--dur-reveal) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children within reveal containers */
.reveal .pain__card,
.reveal .pbr__card,
.reveal .proc__card,
.reveal .presets__card,
.reveal .masks__card,
.reveal .stats__item {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.reveal--visible .pain__card,
.reveal--visible .pbr__card,
.reveal--visible .proc__card,
.reveal--visible .presets__card,
.reveal--visible .masks__card,
.reveal--visible .stats__item {
  opacity: 1;
  transform: translateY(0);
}

/* Sequential stagger delays */
.reveal--visible > :nth-child(1) { transition-delay: 0ms; }
.reveal--visible > :nth-child(2) { transition-delay: 80ms; }
.reveal--visible > :nth-child(3) { transition-delay: 160ms; }
.reveal--visible > :nth-child(4) { transition-delay: 240ms; }
.reveal--visible > :nth-child(5) { transition-delay: 320ms; }
.reveal--visible > :nth-child(6) { transition-delay: 400ms; }
.reveal--visible > :nth-child(7) { transition-delay: 480ms; }
.reveal--visible > :nth-child(8) { transition-delay: 560ms; }

/* ══════════════════════════════════════════════════════════════════════
   REDUCED MOTION
   ══════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal .pain__card,
  .reveal .pbr__card,
  .reveal .proc__card,
  .reveal .presets__card,
  .reveal .masks__card,
  .reveal .stats__item {
    opacity: 1;
    transform: none;
    transition: none;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}