/* === SCROLL-TRIGGERED ANIMATIONS === */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}
.fade-in {
  opacity: 0;
  transition: opacity var(--duration-slower) var(--ease-out);
}
.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}
.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out);
}
/* Add is-visible class via IntersectionObserver to trigger animation */
.fade-up.is-visible,
.fade-in.is-visible,
.slide-in-left.is-visible,
.slide-in-right.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays */
.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 200ms; }
.stagger-4 { transition-delay: 300ms; }
.stagger-5 { transition-delay: 400ms; }

/* Gold shimmer on headings */
@keyframes goldShimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.shimmer-gold {
  background: linear-gradient(90deg, var(--color-gold) 0%, #F0D899 50%, var(--color-gold) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: goldShimmer 3s linear infinite;
}

/* Nav underline grow */
.nav-link::after {
  content: '';
  display: block;
  height: 2px;
  width: 0;
  background: var(--color-gold);
  border-radius: var(--radius-full);
  transition: width var(--duration-base) var(--ease-out);
  margin-top: 2px;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Reduced motion — disable all */
@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-in, .slide-in-left, .slide-in-right {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .shimmer-gold {
    animation: none;
    -webkit-text-fill-color: var(--color-gold);
  }
}

/* ─────────────────────────────────────────────────────────────────
   IMAGE ROTATOR — Two-layer A/B crossfade
   Driven by assets/js/image-rotator.js
   ───────────────────────────────────────────────────────────────── */

/*
 * JS prepends two .ir-layer divs as the first children inside each
 * bg container (.hero-bg, .final-cta-bg, .fw-hero, .asmnt-hero,
 * .shop-hero). Being first in DOM order means overlays and content
 * in subsequent siblings stack on top automatically — no z-index
 * juggling needed.
 */
.ir-layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  transition: opacity 1.6s ease-in-out;
  will-change: opacity;
  pointer-events: none; /* clicks pass through to content above */
}

@media (prefers-reduced-motion: reduce) {
  /* JS bails early on reduced-motion, but guard here too */
  .ir-layer { transition: none; }
}

/* Scroll to top button */
.scroll-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-navy);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
  z-index: var(--z-raised);
  cursor: pointer;
}
.scroll-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.scroll-to-top:hover {
  background: var(--color-gold);
  color: var(--color-navy);
}