/* ==========================================================================
   Animations — scroll reveals, staggers, keyframes.
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Stagger children via --i index */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  transition-delay: calc(100ms * var(--i, 0));
}
.reveal-stagger.is-visible > * { opacity: 1; transform: none; }

.reveal-stagger > *:nth-child(1) { --i: 0; }
.reveal-stagger > *:nth-child(2) { --i: 1; }
.reveal-stagger > *:nth-child(3) { --i: 2; }
.reveal-stagger > *:nth-child(4) { --i: 3; }
.reveal-stagger > *:nth-child(5) { --i: 4; }
.reveal-stagger > *:nth-child(6) { --i: 5; }
.reveal-stagger > *:nth-child(7) { --i: 6; }
.reveal-stagger > *:nth-child(8) { --i: 7; }
.reveal-stagger > *:nth-child(9) { --i: 8; }
.reveal-stagger > *:nth-child(10) { --i: 9; }
.reveal-stagger > *:nth-child(11) { --i: 10; }
.reveal-stagger > *:nth-child(12) { --i: 11; }

/* Fade-in on load */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}

.hero__supertitle,
.hero__title,
.hero__lead,
.hero__cta-row {
  opacity: 0;
  animation: fadeUp var(--dur-xslow) var(--ease-out) forwards;
}
.hero__supertitle { animation-delay: 250ms; }
.hero__title { animation-delay: 400ms; }
.hero__lead { animation-delay: 650ms; }
.hero__cta-row { animation-delay: 850ms; }

.hero__gold-rule {
  transform: scaleX(0);
  transform-origin: left;
  animation: drawLeft var(--dur-xslow) var(--ease-out) 150ms forwards;
}
@keyframes drawLeft {
  to { transform: scaleX(1); }
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
  .hero__supertitle,
  .hero__title,
  .hero__lead,
  .hero__cta-row { opacity: 1; animation: none; }
  .hero__gold-rule { transform: scaleX(1); animation: none; }
  .hairline-draw { transform: scaleX(1); transition: none; }
}