/* ==========================================================================
   Animation Utilities
   Reused site-wide via classes. Controlled by assets/js/animations.js
   (IntersectionObserver toggles [data-in-view="true"]). Only `opacity` and
   `transform` are animated — never layout-triggering properties.
   ========================================================================== */

/* ---- Fade up (default scroll reveal) ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

[data-reveal][data-in-view="true"] {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger — apply data-reveal-group to parent, data-reveal to children;
   JS assigns incremental transition-delay via --stagger-index */
[data-reveal-group] [data-reveal] {
  transition-delay: calc(var(--stagger-index, 0) * 100ms);
}

/* ---- Image scale reveal ---- */
[data-reveal-scale] {
  opacity: 0;
  transform: scale(1.05);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

[data-reveal-scale][data-in-view="true"] {
  opacity: 1;
  transform: scale(1);
}

/* ---- Text mask reveal (clip-path) ---- */
[data-reveal-mask] {
  clip-path: inset(0 0 100% 0);
  transition: clip-path var(--duration-slow) var(--ease-standard);
}

[data-reveal-mask][data-in-view="true"] {
  clip-path: inset(0 0 0% 0);
}

/* ---- Word-by-word reveal ---- */
.word-reveal span {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.3em);
  transition: opacity var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
  transition-delay: calc(var(--word-index, 0) * 90ms);
}

.word-reveal[data-in-view="true"] span {
  opacity: 1;
  transform: translateY(0);
}

/* ---- One-time tilt-in (decorative elements, e.g. phone mockup) ---- */
[data-reveal-tilt] {
  opacity: 0;
  transform: rotate(0deg) translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

[data-reveal-tilt][data-in-view="true"] {
  opacity: 1;
  transform: rotate(var(--tilt-deg, -5deg)) translateY(0);
}

/* ---- Count-up number container (JS drives the digits, this just guards initial state) ---- */
[data-count-up] {
  font-variant-numeric: tabular-nums;
}

/* ---- Shimmer loading effect (images only, per spec 2.11) ---- */
.img-shimmer {
  position: relative;
  overflow: hidden;
  background: var(--color-mist);
}

.img-shimmer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 30%,
    rgba(255, 255, 255, 0.6) 50%,
    transparent 70%
  );
  transform: translateX(-100%);
  animation: shimmer 1.6s infinite;
}

.img-shimmer[data-loaded="true"]::before {
  display: none;
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* Respect reduced motion (also globally enforced in base.css) */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  [data-reveal-scale],
  [data-reveal-mask],
  [data-reveal-tilt],
  .word-reveal span,
  .statement__word {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    transition: none !important;
  }
}