/* === Scroll Reveal Base States === */

.scroll-reveal {
  opacity: 0;
  transition:
    opacity var(--duration-slow) var(--ease-out-expo),
    transform var(--duration-slow) var(--ease-out-expo);
}

.scroll-reveal[data-anim="fade-up"] {
  transform: translateY(28px);
}

.scroll-reveal[data-anim="fade-left"] {
  transform: translateX(-40px);
}

.scroll-reveal[data-anim="fade-right"] {
  transform: translateX(40px);
}

.scroll-reveal[data-anim="scale-in"] {
  transform: scale(0.94);
}

.scroll-reveal[data-anim="bar-grow"] {
  transform: scaleY(0);
  transform-origin: bottom;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* === Hero Entry Animation === */

.hero-animate {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-enter) var(--ease-out-expo),
    transform var(--duration-enter) var(--ease-out-expo);
}

.hero-animate.is-loaded {
  opacity: 1;
  transform: none;
}

.hero-logo-animate {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity var(--duration-enter) var(--ease-out-expo),
    transform var(--duration-enter) var(--ease-out-expo);
}

.hero-logo-animate.is-loaded {
  opacity: 1;
  transform: scale(1);
}

/* === Keyframes === */

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* === Nav underline hover === */

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-blue);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

/* === Reduced motion override === */

@media (prefers-reduced-motion: reduce) {
  .scroll-reveal,
  .scroll-reveal.is-visible,
  .hero-animate,
  .hero-animate.is-loaded,
  .hero-logo-animate,
  .hero-logo-animate.is-loaded {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-indicator__dot {
    animation: none;
  }
}