/* Reveal animations using Intersection Observer */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

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

.reveal--up {
  transform: translateY(40px);
}

.reveal--down {
  transform: translateY(-40px);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* Parallax for hero */
.hero[data-parallax="true"] .hero__gradient {
  transform: translateY(var(--parallax, 0));
  transition: transform 0.1s linear;
}

/* Magnetic buttons */
.btn[data-magnetic="true"] {
  transition: transform var(--duration-base) var(--ease-out);
}

/* Loader / shimmer for lazy images */
img[data-loading="true"] {
  background: linear-gradient(
    90deg,
    var(--ink-elevated) 0%,
    var(--ink-subtle) 50%,
    var(--ink-elevated) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite;
}

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

/* Floating orb decoration */
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-20px) translateX(10px); }
}

/* Nav reveal on scroll */
.nav {
  transform: translateY(0);
  transition: all var(--duration-base) var(--ease-out);
}

.nav[data-hidden="true"] {
  transform: translateY(-100%);
}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll {
    animation: none;
  }

  img[data-loading="true"] {
    animation: none;
  }
}