:root {
  --motion-duration-fast: 0.45s;
  --motion-duration-base: 0.6s;
  --motion-duration-slow: 0.8s;
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);

  --motion-distance-xs: 10px;
  --motion-distance-sm: 16px;
  --motion-distance-md: 24px;
  --motion-distance-lg: 36px;

  --motion-scale-sm: 0.975;
  --motion-scale-xs: 0.99;
}

/* ---------- Base hidden state ---------- */

.motion-target {
  opacity: 0;
  transition:
    opacity var(--motion-duration-base) var(--motion-ease),
    transform var(--motion-duration-base) var(--motion-ease),
    clip-path var(--motion-duration-base) var(--motion-ease);
  will-change: opacity, transform, clip-path;
}

.motion-target.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Reveal variants ---------- */

.motion-target.reveal-up {
  transform: translate3d(0, var(--motion-distance-md), 0);
}

.motion-target.reveal-down {
  transform: translate3d(0, calc(var(--motion-distance-md) * -1), 0);
}

.motion-target.reveal-left {
  transform: translate3d(calc(var(--motion-distance-md) * -1), 0, 0);
}

.motion-target.reveal-right {
  transform: translate3d(var(--motion-distance-md), 0, 0);
}

.motion-target.reveal-scale {
  transform: scale(var(--motion-scale-sm));
}

.motion-target.reveal-soft {
  transform: translate3d(0, var(--motion-distance-sm), 0) scale(var(--motion-scale-xs));
}

.motion-target.reveal-fade {
  transform: none;
}

/* ---------- Blur aliases disabled intentionally ---------- */

.motion-target.reveal-blur,
.motion-target.reveal-blur-soft {
  transform: translate3d(0, var(--motion-distance-sm), 0);
}

/* ---------- Line reveal ---------- */

.motion-target.reveal-line {
  opacity: 1;
  clip-path: inset(0 100% 0 0);
  transition:
    clip-path var(--motion-duration-slow) var(--motion-ease),
    opacity var(--motion-duration-base) var(--motion-ease);
}

.motion-target.reveal-line.is-visible {
  clip-path: inset(0 0 0 0);
}

.motion-target.reveal-line-x {
  opacity: 1;
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform var(--motion-duration-slow) var(--motion-ease);
}

.motion-target.reveal-line-x.is-visible {
  transform: scaleX(1);
}

.motion-target.reveal-line-y {
  opacity: 1;
  transform-origin: center top;
  transform: scaleY(0);
  transition: transform var(--motion-duration-slow) var(--motion-ease);
}

.motion-target.reveal-line-y.is-visible {
  transform: scaleY(1);
}

/* ---------- Stagger groups ---------- */

.stagger-group.motion-target > *,
.stagger-left.motion-target > *,
.stagger-right.motion-target > * {
  opacity: 0;
  transition:
    opacity var(--motion-duration-base) var(--motion-ease),
    transform var(--motion-duration-base) var(--motion-ease);
}

.stagger-group.motion-target > * {
  transform: translate3d(0, var(--motion-distance-sm), 0);
}

.stagger-left.motion-target > * {
  transform: translate3d(calc(var(--motion-distance-sm) * -1), 0, 0);
}

.stagger-right.motion-target > * {
  transform: translate3d(var(--motion-distance-sm), 0, 0);
}

.stagger-group.motion-target.is-visible > *,
.stagger-left.motion-target.is-visible > *,
.stagger-right.motion-target.is-visible > * {
  opacity: 1;
  transform: none;
}

/* ---------- Parallax ---------- */

.parallax-soft {
  will-change: transform;
  transform: translate3d(0, 0, 0);
}

/* ---------- Delay helpers ---------- */

.delay-1 { transition-delay: 0.06s; }
.delay-2 { transition-delay: 0.12s; }
.delay-3 { transition-delay: 0.18s; }
.delay-4 { transition-delay: 0.24s; }
.delay-5 { transition-delay: 0.3s; }
.delay-6 { transition-delay: 0.36s; }

/* ---------- Duration helpers ---------- */

.duration-fast { transition-duration: var(--motion-duration-fast); }
.duration-base { transition-duration: var(--motion-duration-base); }
.duration-slow { transition-duration: var(--motion-duration-slow); }

/* ---------- Distance helpers ---------- */

.distance-xs { --motion-distance-md: var(--motion-distance-xs); }
.distance-sm { --motion-distance-md: var(--motion-distance-sm); }
.distance-lg { --motion-distance-md: var(--motion-distance-lg); }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .motion-target,
  .stagger-group.motion-target > *,
  .stagger-left.motion-target > *,
  .stagger-right.motion-target > *,
  .parallax-soft {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
    clip-path: inset(0 0 0 0) !important;
    will-change: auto !important;
  }
}