.slide-in {
  opacity: 0;
  transform: translateX(250px);
  transition: transform 1s ease-out, opacity 1s ease-out;
}
 
/* Triggered state — added by JS when element enters viewport */
.slide-in.visible {
  opacity: 1;
  transform: translateX(0);
}
 
/* Variations */
 
.slide-in--fast {
  transition-duration: 0.6s;
}
 
.slide-in--slow {
  transition-duration: 1.8s;
}
 
/* More dramatic deceleration */
.slide-in--decelerate {
  transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
 
/* Staggered delays for lists of items */
.slide-in:nth-child(1) { transition-delay: 0s; }
.slide-in:nth-child(2) { transition-delay: 0.1s; }
.slide-in:nth-child(3) { transition-delay: 0.2s; }
.slide-in:nth-child(4) { transition-delay: 0.3s; }
.slide-in:nth-child(5) { transition-delay: 0.4s; }
 
/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .slide-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Show up */

.slide-up {
  opacity: 0;
  transform: translateY(120px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-up-top {
  opacity: 0;
  transform: translateY(120px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-up-top.is-visible {
  opacity: 1;
  transform: translateY(0);
}