/* ── Scroll-triggered animations ── */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.8s ease;
}
.fade-in.visible { opacity: 1; }

/* Stagger: children animate in sequence */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.15s; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.25s; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.35s; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(n+5) { transition-delay: 0.45s; opacity: 1; transform: none; }

/* Prevent animation for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-in, .stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}