/* ============================================================
   ANIMATIONS.CSS — Scroll-triggered fade/slide transitions
  Uses classes toggled by Intersection Observer in scripts/shared.js
   ============================================================ */

/* ---------- Base: hidden state for animated elements ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Directional variants ---------- */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  will-change: opacity, transform;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  will-change: opacity, transform;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- Scale variant ---------- */
.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.8s ease, transform 0.8s ease;
  will-change: opacity, transform;
}

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

/* ---------- Fade only (no movement) ---------- */
.reveal-fade {
  opacity: 0;
  transition: opacity 1s ease;
  will-change: opacity;
}

.reveal-fade.visible {
  opacity: 1;
}

/* ---------- Staggered children ---------- */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.5s; }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.6s; }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.7s; }

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

/* ---------- Hero-specific entrance ---------- */
.hero-enter {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s ease forwards;
}

.hero-enter-delay-1 { animation-delay: 0.3s; }
.hero-enter-delay-2 { animation-delay: 0.6s; }
.hero-enter-delay-3 { animation-delay: 0.9s; }
.hero-enter-delay-4 { animation-delay: 1.2s; }

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Parallax blobs (gentle sway) ---------- */
@keyframes blobSway1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -15px) scale(1.03); }
  66% { transform: translate(-15px, 10px) scale(0.97); }
}

@keyframes blobSway2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-25px, 20px) scale(1.05); }
  66% { transform: translate(10px, -10px) scale(0.95); }
}

@keyframes blobSway3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(15px, 15px); }
}

.hero-bg .wc-blob-1 { animation: blobSway1 20s ease-in-out infinite; }
.hero-bg .wc-blob-2 { animation: blobSway2 25s ease-in-out infinite; }
.hero-bg .wc-blob-3 { animation: blobSway3 18s ease-in-out infinite; }
.hero-bg .wc-blob-4 { animation: blobSway1 22s ease-in-out infinite reverse; }
.hero-bg .wc-blob-5 { animation: blobSway2 16s ease-in-out infinite; }

/* ---------- Fade-out on exit (applied via JS) ---------- */
.reveal-exit {
  transition: opacity 0.5s ease;
}

.reveal-exit.fading-out {
  opacity: 0.3;
}

/* ---------- Nav entrance ---------- */
@keyframes navSlideIn {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

/* ---------- Reduced motion preference ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .reveal-fade,
  .stagger-children > *,
  .hero-enter {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }

  .hero-bg .wc-blob {
    animation: none;
  }

  .floating-dot {
    animation: none;
  }
}