/* ============================================================
   utilities.css — helpers, accessibility, motion preferences.
   Loaded last so its rules win the cascade.
   ============================================================ */

/* [hidden] must always win, even over display rules on components */
[hidden] {
  display: none !important;
}

/* Skip-to-content: visually hidden until keyboard-focused */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  border-radius: 0 0 8px 8px;
  transition: top 0.15s ease;
}

.skip-link:focus-visible {
  top: 0;
  text-decoration: none;
}

/* Screen-reader-only content */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Keyboard focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Scroll-reveal animation hooks (elements start hidden, JS adds
   .visible; IntersectionObserver fallback adds it immediately) */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Reduced motion: disable animations, reveal everything */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}