/* ==========================================================================
   animations.css — Keyframes & Scroll Reveal
   All motion is subtle and disabled under prefers-reduced-motion.
   ========================================================================== */

/* ── Keyframes ────────────────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

/* ── Scroll reveal (driven by animations.js via IntersectionObserver) ─── */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 650ms var(--ease-out),
              transform 750ms cubic-bezier(0.16, 1, 0.3, 1);  /* soft settle */
  will-change: opacity, transform;
}

[data-reveal="fade"]  { transform: none; }
[data-reveal="left"]  { transform: translateX(-24px); }
[data-reveal="right"] { transform: translateX(24px); }
[data-reveal="scale"] { transform: scale(0.96); }

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered children */
[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
[data-reveal-stagger].is-visible > * {
  opacity: 1;
  transform: none;
}
[data-reveal-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-reveal-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-reveal-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-reveal-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-reveal-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }

/* ── Utility animation classes ────────────────────────────────────────── */
.animate-fade  { animation: fade-in var(--dur-slow) var(--ease-out) both; }
.animate-rise  { animation: rise var(--dur-slow) var(--ease-out) both; }
.animate-scale { animation: scale-in var(--dur-base) var(--ease-out) both; }

/* ── Reduced motion: neutralize all reveal transforms ─────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  [data-reveal-stagger] > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .animate-fade,
  .animate-rise,
  .animate-scale {
    animation: none !important;
  }
}