/* ============================================================
   Animations & Scroll-Triggered Reveals
   ============================================================ */

/* ── Keyframes ── */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-28px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(28px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

/* ── Scroll-reveal base states ── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

/* ── Visible state (added by IntersectionObserver) ── */

.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* ── Stagger delays for child elements ── */

.stagger > *:nth-child(1) { transition-delay: 0ms; }
.stagger > *:nth-child(2) { transition-delay: 100ms; }
.stagger > *:nth-child(3) { transition-delay: 200ms; }
.stagger > *:nth-child(4) { transition-delay: 300ms; }
.stagger > *:nth-child(5) { transition-delay: 400ms; }
.stagger > *:nth-child(6) { transition-delay: 500ms; }

/* ── Hero content entrance ── */
.hero-content .hero-eyebrow {
  animation: fadeInDown 0.8s ease 0.2s both;
}

.hero-content .hero-names {
  animation: fadeInUp 0.9s ease 0.4s both;
}

.hero-content .hero-divider {
  animation: scaleIn 0.6s ease 0.7s both;
}

.hero-content .hero-date {
  animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-content .hero-intro {
  animation: fadeInUp 0.8s ease 1s both;
}

.hero-content .btn {
  animation: fadeInUp 0.8s ease 1.15s both;
}

.scroll-cue {
  animation: bounce 2.2s ease-in-out 1.5s infinite;
  opacity: 0;
  animation-fill-mode: both;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
}