/* ==========================================================================
   ANIMATION.CSS — keyframes, transitions & reduced-motion guards
   ========================================================================== */

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fade {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

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

@media (prefers-reduced-motion: no-preference) {
  .orbit__spin { animation: spin 60s linear infinite; }
  .page.active { animation: fade .4s ease; }
  .marquee__track { animation: marquee-scroll var(--marquee-duration, 30s) linear infinite; }
  .marquee__track--reverse { animation-direction: reverse; }
  .marquee:hover .marquee__track { animation-play-state: paused; }
}

@media (prefers-reduced-motion: reduce) {
  .marquee__set:last-child { display: none; }
  .drop, .nav { transition: none !important; transform: none !important; }
}

/* ==========================================================================
   SCROLL REVEAL — applied by assets/js/scroll-reveal.js (IntersectionObserver)
   to a standard set of repeating components across every page. JS adds `.reveal`
   up front, then `.in-view` once the element scrolls into view; it never
   applies either class when the visitor prefers reduced motion.
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}

/* Light cascade/stagger for elements revealing together inside a grid */
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(1) { transition-delay: 0s; }
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(2) { transition-delay: .08s; }
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(3) { transition-delay: .16s; }
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(4) { transition-delay: .24s; }
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(5) { transition-delay: .32s; }
:is(.grid, .pgrid, .vm, .promise, .hero__stats, .footer__grid) > .reveal:nth-child(6) { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ==========================================================================
   PAGE LOADER — centred logo shown briefly on every page load, and again
   while page-transition.js waits for the next page after following a link.
   Two stacked copies of the logo: a dim greyscale base, and a full-colour
   copy whose mask sweeps left-to-right on a loop, revealing colour as it
   passes — a loading cue built from the brand mark instead of a generic
   spinner or a page-wide fade. Markup: includes/partials/page-loader.php.
   ========================================================================== */
.page-loader {
  position: fixed; inset: 0; z-index: 500;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 1; visibility: visible;
  transition: opacity .2s var(--ease-glass), visibility .2s;
}
.page-loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.page-loader__logo { position: relative; width: 150px; }
.page-loader__img { display: block; width: 100%; height: auto; }
.page-loader__img--base { filter: grayscale(1) opacity(.3); }
.page-loader__img--sweep {
  position: absolute; inset: 0;
  -webkit-mask-image: linear-gradient(100deg, transparent, #000 45%, #000 55%, transparent);
  mask-image: linear-gradient(100deg, transparent, #000 45%, #000 55%, transparent);
  -webkit-mask-size: 240% 100%; mask-size: 240% 100%;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-position: -140% 0; mask-position: -140% 0;
}

@keyframes page-loader-auto-hide {
  0%, 65% { opacity: 1; visibility: visible; }
  100%    { opacity: 0; visibility: hidden; }
}
@keyframes page-loader-sweep {
  from { -webkit-mask-position: -140% 0; mask-position: -140% 0; }
  to   { -webkit-mask-position: 140% 0; mask-position: 140% 0; }
}

@media (prefers-reduced-motion: no-preference) {
  /* No-JS safety net: auto-hides even if page-transition.js never runs.
     JS cancels this (sets animation: none) the moment it takes over, so
     the two never fight for control of opacity. */
  .page-loader { animation: page-loader-auto-hide .7s ease forwards; }
  .page-loader__img--sweep { animation: page-loader-sweep 1.3s ease-in-out infinite; }
}
@media (prefers-reduced-motion: reduce) {
  .page-loader__img--base { display: none; }
  .page-loader__img--sweep { position: static; -webkit-mask-image: none; mask-image: none; }
}

/* Shared hover/transition timings, referenced by component classes in style.css */
:root {
  --transition-fast: .2s;
  --transition-med: .25s;
  --transition-slow: .3s;
  /* Material "standard" easing — smooth accelerate-then-decelerate, used
     for anything appearing/moving on screen (dropdowns, mobile menu). */
  --ease-glass: cubic-bezier(.4, 0, .2, 1);
  /* Material "accelerate" easing — for things leaving the screen, so exits
     feel quicker/snappier than entrances. */
  --ease-glass-out: cubic-bezier(.4, 0, 1, 1);
}