/* ==========================================================================
   Gamosa — Animations
   All motion is defined here so it can be tuned (or disabled) in one place.
   Everything degrades gracefully under prefers-reduced-motion.
   ========================================================================== */

/* ---------------------------------------------- Keyframes ---------------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

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

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes shimmer {
  from { background-position: -420px 0; }
  to   { background-position: 420px 0; }
}

/* ------------------------------------- Page-load entrance (hero, heads) -- */
.page-enter > * {
  opacity: 0;
  animation: fadeUp 0.85s var(--ease) forwards;
}
.page-enter > *:nth-child(1) { animation-delay: 0.05s; }
.page-enter > *:nth-child(2) { animation-delay: 0.15s; }
.page-enter > *:nth-child(3) { animation-delay: 0.25s; }
.page-enter > *:nth-child(4) { animation-delay: 0.35s; }
.page-enter > *:nth-child(5) { animation-delay: 0.45s; }
.page-enter > *:nth-child(6) { animation-delay: 0.55s; }

/* Gentle drift on the hero collage */
.hero__collage figure:nth-child(1) { animation: floaty 9s ease-in-out infinite; }
.hero__collage figure:nth-child(2) { animation: floaty 11s ease-in-out 0.8s infinite; }
.hero__collage figure:nth-child(3) { animation: floaty 10s ease-in-out 1.6s infinite; }

/* ---------------------------------------------- Scroll reveal ------------ */
/* Elements marked [data-reveal] start hidden; main.js adds .is-visible via
   IntersectionObserver. If JS never runs, the no-js fallback below keeps
   everything readable. */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
[data-reveal="fade"] { transform: none; }
[data-reveal="left"]  { transform: translateX(-28px); }
[data-reveal="right"] { transform: translateX(28px); }

/* Stagger children of a revealed group */
[data-reveal-group] > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal-group].is-visible > * {
  opacity: 1;
  transform: none;
}
[data-reveal-group].is-visible > *:nth-child(1) { transition-delay: 0.04s; }
[data-reveal-group].is-visible > *:nth-child(2) { transition-delay: 0.10s; }
[data-reveal-group].is-visible > *:nth-child(3) { transition-delay: 0.16s; }
[data-reveal-group].is-visible > *:nth-child(4) { transition-delay: 0.22s; }
[data-reveal-group].is-visible > *:nth-child(5) { transition-delay: 0.28s; }
[data-reveal-group].is-visible > *:nth-child(6) { transition-delay: 0.34s; }
[data-reveal-group].is-visible > *:nth-child(7) { transition-delay: 0.40s; }
[data-reveal-group].is-visible > *:nth-child(8) { transition-delay: 0.46s; }

html.no-js [data-reveal],
html.no-js [data-reveal-group] > * {
  opacity: 1;
  transform: none;
}

/* ---------------------------------------------- Filter transitions ------- */
/* Cards are re-rendered on filter; this fades the new set in smoothly. */
.product-grid.is-filtering { opacity: 0.25; transform: translateY(6px); }
.product-grid {
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}
.product-grid > .product-card {
  animation: fadeUp 0.5s var(--ease) backwards;
}
.product-grid > .product-card:nth-child(1)  { animation-delay: 0.02s; }
.product-grid > .product-card:nth-child(2)  { animation-delay: 0.05s; }
.product-grid > .product-card:nth-child(3)  { animation-delay: 0.08s; }
.product-grid > .product-card:nth-child(4)  { animation-delay: 0.11s; }
.product-grid > .product-card:nth-child(5)  { animation-delay: 0.14s; }
.product-grid > .product-card:nth-child(6)  { animation-delay: 0.17s; }
.product-grid > .product-card:nth-child(7)  { animation-delay: 0.20s; }
.product-grid > .product-card:nth-child(8)  { animation-delay: 0.23s; }
.product-grid > .product-card:nth-child(n+9) { animation-delay: 0.26s; }

/* ---------------------------------------------- Loading skeleton --------- */
.skeleton {
  border-radius: var(--radius);
  background: linear-gradient(90deg,
    var(--surface-sunk) 0%,
    var(--line) 40%,
    var(--surface-sunk) 80%);
  background-size: 420px 100%;
  animation: shimmer 1.4s linear infinite;
}
.skeleton--card { aspect-ratio: 3 / 4; }

/* ---------------------------------------------- Reduced motion ----------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .page-enter > *,
  [data-reveal],
  [data-reveal-group] > * {
    opacity: 1 !important;
    transform: none !important;
  }

  .hero__collage figure { animation: none !important; }
  .product-card:hover { transform: none; }
  .product-card:hover .product-card__media img { transform: none; }
  .btn:hover { transform: none; }
}