/* ==========================================================================
   SCROLL ANIMATIONS
   Triggered by IntersectionObserver when elements enter viewport
   ========================================================================== */

/* Base scroll animation - hidden state */
.krx-scroll-animate {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

/* Visible state - applied by JavaScript */
.krx-scroll-animate.is-visible {
  opacity: 1;
  transform: translate(0, 0) scale(1) !important;
}

/* Animation variants - Initial states */

/* Fade up from bottom (default) */
.krx-scroll-animate--from-bottom {
  transform: translateY(40px);
}

/* Fade up from further below */
.krx-scroll-animate--from-bottom-far {
  transform: translateY(80px);
}

/* Fade in from left */
.krx-scroll-animate--from-left {
  transform: translateX(-60px);
}

/* Fade in from right */
.krx-scroll-animate--from-right {
  transform: translateX(60px);
}

/* Scale up (zoom in) */
.krx-scroll-animate--scale-up {
  transform: scale(0.9);
}

/* Scale down (zoom out) */
.krx-scroll-animate--scale-down {
  transform: scale(1.1);
}

/* Fade only (no movement) */
.krx-scroll-animate--fade {
  transform: none;
}

/* Blur in */
.krx-scroll-animate--blur {
  filter: blur(10px);
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.krx-scroll-animate--blur.is-visible {
  filter: blur(0);
}

/* Rotate in */
.krx-scroll-animate--rotate {
  transform: translateY(30px) rotate(-3deg);
}

/* ==========================================================================
   STAGGERED ANIMATIONS
   For grid/list items that should animate in sequence
   ========================================================================== */

/* Staggered container - children animate with delays */
.krx-stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.krx-stagger-children.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.krx-stagger-children.is-visible > *:nth-child(2) { transition-delay: 100ms; }
.krx-stagger-children.is-visible > *:nth-child(3) { transition-delay: 200ms; }
.krx-stagger-children.is-visible > *:nth-child(4) { transition-delay: 300ms; }
.krx-stagger-children.is-visible > *:nth-child(5) { transition-delay: 400ms; }
.krx-stagger-children.is-visible > *:nth-child(6) { transition-delay: 500ms; }
.krx-stagger-children.is-visible > *:nth-child(7) { transition-delay: 600ms; }
.krx-stagger-children.is-visible > *:nth-child(8) { transition-delay: 700ms; }

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

/* Stagger from left (for horizontal grids) */
.krx-stagger-children--from-left > * {
  transform: translateX(-40px);
}

.krx-stagger-children--from-left.is-visible > * {
  transform: translateX(0);
}

/* Stagger scale up */
.krx-stagger-children--scale > * {
  transform: scale(0.85);
}

.krx-stagger-children--scale.is-visible > * {
  transform: scale(1);
}

/* Faster stagger (50ms between items) */
.krx-stagger-children--fast.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(2) { transition-delay: 50ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(3) { transition-delay: 100ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(4) { transition-delay: 150ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(5) { transition-delay: 200ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(6) { transition-delay: 250ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(7) { transition-delay: 300ms; }
.krx-stagger-children--fast.is-visible > *:nth-child(8) { transition-delay: 350ms; }

/* Slower stagger (150ms between items) - more dramatic */
.krx-stagger-children--slow.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(2) { transition-delay: 150ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(3) { transition-delay: 300ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(4) { transition-delay: 450ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(5) { transition-delay: 600ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(6) { transition-delay: 750ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(7) { transition-delay: 900ms; }
.krx-stagger-children--slow.is-visible > *:nth-child(8) { transition-delay: 1050ms; }

/* ==========================================================================
   DURATION MODIFIERS
   ========================================================================== */

.krx-scroll-animate--fast {
  transition-duration: 0.4s;
}

.krx-scroll-animate--slow {
  transition-duration: 1.2s;
}

/* ==========================================================================
   RESPECT REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .krx-scroll-animate,
  .krx-stagger-children > * {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
    filter: none !important;
  }
}