/* =========================================================
   animations.css — scroll reveals, hover micro-interactions
   Driven by IntersectionObserver in animations.js.
   All effects are disabled under prefers-reduced-motion.
   ========================================================= */

/* Elements start hidden only once JS confirms it will animate them.
   The .js-ready class is added by main.js; without it (JS disabled
   or failed) content is always visible — see the base rule below. */
[data-reveal] {
  opacity: 1;
  transform: none;
}

.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 560ms var(--ease-out), transform 560ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.js-ready [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .js-ready [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Mobile nav panel */
.nav-links {
  transition: opacity var(--dur-base) var(--ease-standard);
}

@media (max-width: 767px) {
  .nav-links {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--color-bg);
    border-left: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5.5rem var(--space-lg) var(--space-lg);
    gap: var(--space-lg);
    overflow-y: auto;
    text-align: center;
    transform: translateX(100%);
    transition: transform var(--dur-base) var(--ease-standard);
    z-index: 90;
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: var(--fs-lg);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-close {
    display: inline-flex;
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
  }
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5, 9, 18, 0.6);
  z-index: 80;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-standard);
}

.nav-overlay.is-open {
  display: block;
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .nav-links,
  .nav-overlay {
    transition: none;
  }
}