/* ========================================
   Animations — Scroll Reveal & Hover
   ======================================== */

/* --- Scroll Reveal base states --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal--left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal--right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal--scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Visible state */
.reveal--visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Staggered children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-stagger--visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger--visible > *:nth-child(2) { transition-delay: 0.15s; }
.reveal-stagger--visible > *:nth-child(3) { transition-delay: 0.25s; }
.reveal-stagger--visible > *:nth-child(4) { transition-delay: 0.35s; }
.reveal-stagger--visible > *:nth-child(5) { transition-delay: 0.45s; }
.reveal-stagger--visible > *:nth-child(6) { transition-delay: 0.55s; }

.reveal-stagger--visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --- Divider line animation --- */
.divider-line {
  width: 0;
  height: 1px;
  background: var(--gold);
  margin: 60px auto;
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.divider-line--visible {
  width: 120px;
}

/* --- Hero parallax (applied via JS) --- */
.hero__bg--parallax {
  will-change: transform;
}

/* --- Smooth image zoom on card hover --- */
.card__image,
.room-card__image,
.split__image {
  overflow: hidden;
}

.card__image img,
.room-card__image img,
.split__image img {
  transition: transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.card:hover .card__image img,
.room-card:hover .room-card__image img {
  transform: scale(1.06);
}

/* --- Button liquid wave animation --- */
.btn::before {
  will-change: bottom;
}

/* --- Nav link underline animation --- */
.header__nav a::after {
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Gold line accent on section headers --- */
.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 1.5rem auto 0;
  transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}

.section-header.reveal--visible h2::after {
  width: 60px;
}

/* --- Mobile menu transition --- */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--navy-dark);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.mobile-nav--open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--white);
  letter-spacing: 0.05em;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

.mobile-nav--open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav--open a:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav--open a:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav--open a:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav--open a:nth-child(4) { transition-delay: 0.25s; }
.mobile-nav--open a:nth-child(5) { transition-delay: 0.3s; }
.mobile-nav--open a:nth-child(6) { transition-delay: 0.35s; }
.mobile-nav--open a:nth-child(7) { transition-delay: 0.4s; }

.mobile-nav a:hover {
  color: var(--gold);
}

/* --- Burger animation --- */
.header__burger--open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.header__burger--open span:nth-child(2) {
  opacity: 0;
}

.header__burger--open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* --- Prefers reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--left,
  .reveal--right,
  .reveal--scale,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll-line {
    animation: none;
  }
}