/* ==========================================================================
   Animations — Keyframes, scroll fade-in, shimmer, reduced motion
   ========================================================================== */

/* --------------------------------------------------------------------------
   Keyframes
   -------------------------------------------------------------------------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: rotate(45deg) translateY(0);
  }
  40% {
    transform: rotate(45deg) translateY(-8px);
  }
  60% {
    transform: rotate(45deg) translateY(-4px);
  }
}

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

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

/* --------------------------------------------------------------------------
   Scroll Animation (data-animate)
   -------------------------------------------------------------------------- */

/* Initial hidden state (set in main.css):
   [data-animate] { opacity: 0; transform: translateY(24px); } */

/* Animated state — applied by JS IntersectionObserver */
[data-animate].animated {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Stagger children — optional: add data-animate-delay on parent */
[data-animate].animated:nth-child(2) {
  transition-delay: 0.1s;
}

[data-animate].animated:nth-child(3) {
  transition-delay: 0.2s;
}

[data-animate].animated:nth-child(4) {
  transition-delay: 0.3s;
}

/* --------------------------------------------------------------------------
   Gold Shimmer Utility
   -------------------------------------------------------------------------- */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--color-gold-dark) 0%,
    var(--color-gold-light) 50%,
    var(--color-gold-dark) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s linear infinite;
}

/* --------------------------------------------------------------------------
   Reduced Motion Override
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  @keyframes fadeUp { from, to { opacity: 1; transform: none; } }
  @keyframes shimmer { from, to { background-position: 0 center; } }
  @keyframes bounce { from, to { transform: rotate(45deg) translateY(0); } }
  @keyframes spin { from, to { transform: none; } }
  @keyframes fadeIn { from, to { opacity: 1; } }

  .js [data-animate] {
    opacity: 1;
    transform: none;
  }

  [data-animate].animated {
    transition: none;
  }

  .shimmer {
    animation: none;
  }
}