/**
 * Scroll Animation Classes
 * 
 * Reusable CSS classes for scroll-triggered animations.
 * All animations respect prefers-reduced-motion.
 */

/* Base animation classes - Initial hidden state */
.scroll-animate--hidden {
  opacity: 0;
  visibility: hidden;
}

/* Fade In Animation */
.scroll-animate--fade-in {
  opacity: 0;
  transition: opacity 0.6s ease-out;
}

/* Combined selector for higher specificity - ensures animated state overrides hidden state */
.scroll-animate--fade-in.scroll-animate--fade-in--animated {
  opacity: 1 !important;
  visibility: visible !important;
}

/* Fallback: if only animated class is present (for progressive enhancement) */
.scroll-animate--fade-in--animated {
  opacity: 1;
  visibility: visible;
}

/* Slide Up Animation */
.scroll-animate--slide-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.scroll-animate--slide-up.scroll-animate--slide-up--animated {
  opacity: 1 !important;
  transform: translateY(0) !important;
  visibility: visible !important;
}

.scroll-animate--slide-up--animated {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

/* Slide In Left Animation */
.scroll-animate--slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.scroll-animate--slide-in-left.scroll-animate--slide-in-left--animated {
  opacity: 1 !important;
  transform: translateX(0) !important;
  visibility: visible !important;
}

.scroll-animate--slide-in-left--animated {
  opacity: 1;
  transform: translateX(0);
  visibility: visible;
}

/* Slide In Right Animation */
.scroll-animate--slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.scroll-animate--slide-in-right.scroll-animate--slide-in-right--animated {
  opacity: 1 !important;
  transform: translateX(0) !important;
  visibility: visible !important;
}

.scroll-animate--slide-in-right--animated {
  opacity: 1;
  transform: translateX(0);
  visibility: visible;
}

/* Scale In Animation */
.scroll-animate--scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate--scale-in.scroll-animate--scale-in--animated {
  opacity: 1 !important;
  transform: scale(1) !important;
  visibility: visible !important;
}

.scroll-animate--scale-in--animated {
  opacity: 1;
  transform: scale(1);
  visibility: visible;
}

/* Progressive Enhancement: Elements visible by default if JS fails */
/* Only hide elements if JavaScript successfully adds the base class */
.no-js .scroll-animate--fade-in,
.no-js .scroll-animate--slide-up,
.no-js .scroll-animate--slide-in-left,
.no-js .scroll-animate--slide-in-right,
.no-js .scroll-animate--scale-in {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .scroll-animate--fade-in,
  .scroll-animate--slide-up,
  .scroll-animate--slide-in-left,
  .scroll-animate--slide-in-right,
  .scroll-animate--scale-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    visibility: visible !important;
  }
}