/* =============================================
   UTILITIES — Animation states, helpers
   ============================================= */

/* =============================================
   SCROLL ANIMATION BASE
   Hidden state is ONLY applied when JS adds .js-animations-enabled to <body>.
   Without JS (or on first paint before JS runs), all elements are fully visible.
   ============================================= */

.js-animations-enabled .animate-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js-animations-enabled .animate-fade-in {
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.js-animations-enabled .animate-slide-left {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js-animations-enabled .animate-slide-right {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

/* Stagger delays for grid children */
.js-animations-enabled .stagger-children > *:nth-child(1) { transition-delay: 0ms; }
.js-animations-enabled .stagger-children > *:nth-child(2) { transition-delay: 80ms; }
.js-animations-enabled .stagger-children > *:nth-child(3) { transition-delay: 160ms; }
.js-animations-enabled .stagger-children > *:nth-child(4) { transition-delay: 240ms; }
.js-animations-enabled .stagger-children > *:nth-child(5) { transition-delay: 320ms; }
.js-animations-enabled .stagger-children > *:nth-child(6) { transition-delay: 400ms; }

/* Stagger children start hidden */
.js-animations-enabled .stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

/* When .is-visible is added by JS, reveal the element */
.js-animations-enabled .animate-fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js-animations-enabled .animate-fade-in.is-visible {
  opacity: 1;
}

.js-animations-enabled .animate-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.js-animations-enabled .animate-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.js-animations-enabled .stagger-children.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   SPACING HELPERS
   ============================================= */
.mt-0  { margin-top: 0; }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }

/* =============================================
   VISIBILITY
   ============================================= */
.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;
}

/* =============================================
   DIVIDER
   ============================================= */
.divider {
  border: none;
  border-top: 1px solid var(--color-gray-light);
  margin: 0;
}

/* =============================================
   TEXT UTILITIES
   ============================================= */
.text-orange { color: var(--color-orange); }
.text-muted  { color: var(--color-gray-muted); }
.text-white  { color: var(--color-white); }
.text-dark   { color: var(--color-dark); }

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  .animate-fade-up,
  .animate-fade-in,
  .animate-slide-left,
  .animate-slide-right,
  .stagger-children > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
