/* ============================================================
   VARA RESORT — animations.css
   Keyframes, scroll-reveal, hover transitions
   ============================================================ */

/* ── Keyframes ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scrollLine {
  0%, 100% {
    opacity: 0.5;
    transform: scaleY(1);
    transform-origin: top;
  }
  50% {
    opacity: 1;
    transform: scaleY(0.6);
    transform-origin: top;
  }
}

@keyframes slowZoom {
  from { transform: scale(1.08); }
  to   { transform: scale(1); }
}

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

/* ── Scroll Reveal ─────────────────────────────────────────── */
/* Base hidden state — applied via JS data-animate attribute   */
[data-animate] {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.9s var(--ease-out),
    transform 0.9s var(--ease-out);
}

[data-animate="fade"] {
  transform: none;
}

[data-animate="left"] {
  transform: translateX(-32px);
}

[data-animate="right"] {
  transform: translateX(32px);
}

[data-animate="scale"] {
  transform: scale(0.96);
}

/* Visible state toggled by IntersectionObserver */
[data-animate].is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered children */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

[data-stagger].is-visible > *:nth-child(1)  { transition-delay: 0s;    }
[data-stagger].is-visible > *:nth-child(2)  { transition-delay: 0.12s; }
[data-stagger].is-visible > *:nth-child(3)  { transition-delay: 0.24s; }
[data-stagger].is-visible > *:nth-child(4)  { transition-delay: 0.36s; }
[data-stagger].is-visible > *:nth-child(5)  { transition-delay: 0.48s; }
[data-stagger].is-visible > *:nth-child(6)  { transition-delay: 0.6s;  }

[data-stagger].is-visible > * {
  opacity: 1;
  transform: none;
}

/* ── Image Hover ────────────────────────────────────────────── */
.img-hover {
  overflow: hidden;
}

.img-hover img {
  transition: transform 0.9s var(--ease-out);
}

.img-hover:hover img {
  transform: scale(1.04);
}

/* ── Link Underline ─────────────────────────────────────────── */
.link-underline {
  position: relative;
  display: inline-block;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--dur-fast) var(--ease-out);
}

.link-underline:hover::after {
  width: 100%;
}

/* ── Gold shimmer on loading ────────────────────────────────── */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--sand) 25%,
    var(--gold-light) 50%,
    var(--sand) 75%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

/* ── Parallax hint ──────────────────────────────────────────── */
.parallax-img {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* ── Page transitions ───────────────────────────────────────── */
.page-enter {
  animation: fadeIn 0.5s ease forwards;
}

/* ── Prefers reduced motion ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-animate],
  [data-stagger] > * {
    opacity: 1;
    transform: none;
  }
}