/* =========================================================
   SCROLL-REVEAL ANIMATIONS
   Elements start hidden via [data-reveal] and are flipped
   to .is-visible by IntersectionObserver in main.js.
   Falls back to fully visible if JS is disabled.
   ========================================================= */

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

[data-reveal="fade"] { transform: none; }
[data-reveal="scale"] { transform: scale(.94); }
[data-reveal="scale"].is-visible { transform: scale(1); }
[data-reveal="left"] { transform: translateX(-30px); }
[data-reveal="left"].is-visible { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(30px); }
[data-reveal="right"].is-visible { transform: translateX(0); }

/* stagger children of a group */
[data-reveal-group] > * { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
[data-reveal-group].is-visible > * { opacity: 1; transform: translateY(0); }
[data-reveal-group].is-visible > *:nth-child(1){ transition-delay: .03s; }
[data-reveal-group].is-visible > *:nth-child(2){ transition-delay: .09s; }
[data-reveal-group].is-visible > *:nth-child(3){ transition-delay: .15s; }
[data-reveal-group].is-visible > *:nth-child(4){ transition-delay: .21s; }
[data-reveal-group].is-visible > *:nth-child(5){ transition-delay: .27s; }
[data-reveal-group].is-visible > *:nth-child(6){ transition-delay: .33s; }
[data-reveal-group].is-visible > *:nth-child(7){ transition-delay: .39s; }
[data-reveal-group].is-visible > *:nth-child(8){ transition-delay: .45s; }
[data-reveal-group].is-visible > *:nth-child(9){ transition-delay: .51s; }
[data-reveal-group].is-visible > *:nth-child(10){ transition-delay: .57s; }

/* JS not yet run: no-js fallback keeps content visible */
.no-js [data-reveal], .no-js [data-reveal-group] > * { opacity: 1 !important; transform: none !important; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.fade-in { animation: fadeIn .5s var(--ease); }

@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,.35); border-top-color: #fff;
  animation: spin .7s linear infinite; display: inline-block;
}
.spinner-dark { border-color: rgba(20,20,20,.2); border-top-color: var(--dark); }

@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-group] > * { opacity: 1 !important; transform: none !important; transition: none !important; }
}