/* ============================================
   Utility Classes
   ============================================ */

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

/* Reveal base class (hidden state for JS-enhanced reveals) */
.js-enabled .reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: var(--transition-reveal);
}

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

.js-enabled .reveal--left {
  transform: translateX(-2rem);
}

.js-enabled .reveal--right {
  transform: translateX(2rem);
}

.js-enabled .reveal--scale {
  transform: scale(0.95);
}

.js-enabled .reveal--left.is-visible,
.js-enabled .reveal--right.is-visible,
.js-enabled .reveal--scale.is-visible {
  opacity: 1;
  transform: translateX(0) translateY(0) scale(1);
}

/* Text alignment */
.text-center { text-align: center; }

/* Spacing */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }