/* ═══════════════════════════════════════════════════════
   ANIMATIONS — Keyframes & Scroll Entrance
   ═══════════════════════════════════════════════════════ */

/* ─── Keyframes ─── */

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

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

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

@keyframes slideLeft {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes drawLine {
  from { 
    transform: scaleY(0);
  }
  to { 
    transform: scaleY(1);
  }
}

@keyframes gentlePulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.7; }
}

@keyframes brandFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

@keyframes softReveal {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ─── Hero Entrance ─── */

.hero__stacked-wrapper > * {
  opacity: 0;
  animation: fadeUp var(--duration-slower) var(--ease-premium) forwards;
}

.hero__stacked-wrapper > *:nth-child(1) { animation-delay: 100ms; }
.hero__stacked-wrapper > *:nth-child(2) { animation-delay: 250ms; }
.hero__stacked-wrapper > *:nth-child(3) { animation-delay: 400ms; }

.hero__media-wrapper {
  opacity: 0;
  animation: softReveal var(--duration-slowest) var(--ease-premium) 400ms forwards;
}

.header__logo {
  animation: brandFloat 5.5s var(--ease-gentle) 900ms infinite;
}

/* ─── Scroll Entrance Classes ─── */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slower) var(--ease-premium),
              transform var(--duration-slower) var(--ease-premium);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-slide-right {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity var(--duration-slower) var(--ease-premium),
              transform var(--duration-slower) var(--ease-premium);
}

.animate-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-slide-left {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity var(--duration-slower) var(--ease-premium),
              transform var(--duration-slower) var(--ease-premium);
}

.animate-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity var(--duration-slower) var(--ease-premium),
              transform var(--duration-slower) var(--ease-premium);
}

.animate-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

.animate-fade {
  opacity: 0;
  transition: opacity var(--duration-slower) var(--ease-premium);
}

.animate-fade.is-visible {
  opacity: 1;
}

/* ─── Stagger Delays ─── */

[data-stagger] > .animate-on-scroll:nth-child(1),
[data-stagger] > .animate-slide-right:nth-child(1) { transition-delay: 0ms; }

[data-stagger] > .animate-on-scroll:nth-child(2),
[data-stagger] > .animate-slide-right:nth-child(2) { transition-delay: 120ms; }

[data-stagger] > .animate-on-scroll:nth-child(3),
[data-stagger] > .animate-slide-right:nth-child(3) { transition-delay: 240ms; }

[data-stagger] > .animate-on-scroll:nth-child(4),
[data-stagger] > .animate-slide-right:nth-child(4) { transition-delay: 360ms; }

[data-stagger] > .animate-on-scroll:nth-child(5),
[data-stagger] > .animate-slide-right:nth-child(5) { transition-delay: 480ms; }

[data-stagger] > .animate-on-scroll:nth-child(6),
[data-stagger] > .animate-slide-right:nth-child(6) { transition-delay: 600ms; }

[data-stagger] > .animate-on-scroll:nth-child(7),
[data-stagger] > .animate-slide-right:nth-child(7) { transition-delay: 720ms; }

[data-stagger] > .animate-on-scroll:nth-child(8),
[data-stagger] > .animate-slide-right:nth-child(8) { transition-delay: 840ms; }

/* Reset transition delay on exit so reverse animations trigger immediately when scrolling back up */
.animate-on-scroll:not(.is-visible),
.animate-slide-right:not(.is-visible),
.animate-slide-left:not(.is-visible),
.animate-scale:not(.is-visible),
.animate-fade:not(.is-visible),
.line-draw:not(.is-visible) {
  transition-delay: 0ms !important;
}

/* ─── Decorative Line Draw ─── */

.line-draw {
  transform-origin: top;
  transform: scaleY(0);
  transition: transform var(--duration-slowest) var(--ease-premium);
}

.line-draw.is-visible {
  transform: scaleY(1);
}

/* ─── Reduced Motion ─── */

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

  .animate-on-scroll,
  .animate-slide-right,
  .animate-slide-left,
  .animate-scale,
  .animate-fade {
    opacity: 1;
    transform: none;
  }

  .hero__stacked-wrapper > *,
  .hero__media-wrapper,
  .header__logo {
    opacity: 1;
    animation: none;
  }
}