/* =========================================================================
   TheNorthCop — animation primitives + keyframes
   ------------------------------------------------------------------------- */

/* Reveal-on-scroll -------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity .9s var(--ease-out),
    transform .9s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal--left  { transform: translateX(-40px); }
.reveal--right { transform: translateX(40px); }
.reveal--left.is-visible, .reveal--right.is-visible { transform: none; }

.reveal--scale { transform: scale(.92); }
.reveal--scale.is-visible { transform: scale(1); }

/* Stagger groups */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.stagger.is-visible > * {
  opacity: 1;
  transform: none;
}
.stagger.is-visible > *:nth-child(1) { transition-delay: .05s; }
.stagger.is-visible > *:nth-child(2) { transition-delay: .12s; }
.stagger.is-visible > *:nth-child(3) { transition-delay: .19s; }
.stagger.is-visible > *:nth-child(4) { transition-delay: .26s; }
.stagger.is-visible > *:nth-child(5) { transition-delay: .33s; }
.stagger.is-visible > *:nth-child(6) { transition-delay: .40s; }
.stagger.is-visible > *:nth-child(7) { transition-delay: .47s; }
.stagger.is-visible > *:nth-child(8) { transition-delay: .54s; }

/* Parallax attribute hook (data-parallax="0.3") set inline by JS */
[data-parallax] { will-change: transform; }

/* Split-text lines (JS wraps content into .line > span) */
.split-line { display: block; overflow: hidden; }
.split-line > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform .9s var(--ease-spring);
}
.split-line.is-visible > span { transform: none; }

/* Animated underline for links */
.link-underline {
  position: relative;
  display: inline-flex;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .5s var(--ease-out);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left center; }

/* Keyframes ---------------------------------------------------------------*/

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

@keyframes heroIn {
  from { transform: translateY(120%); }
  to   { transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translate3d(0,0,0) scale(1); }
  33%      { transform: translate3d(4vmax, -3vmax, 0) scale(1.08); }
  66%      { transform: translate3d(-3vmax, 4vmax, 0) scale(.95); }
}

@keyframes rotateHue {
  from { --a: 0deg; }
  to   { --a: 360deg; }
}

/* Safari/Firefox fallback for --a via property */
@property --a {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes scrollCue {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes curtainDown {
  from { transform: scaleY(0); }
  to   { transform: scaleY(1); }
}
@keyframes curtainUp {
  from { transform: scaleY(1); }
  to   { transform: scaleY(0); }
}

@keyframes pulseRing {
  0%   { box-shadow: 0 0 0 0 rgba(255,45,85,.55); }
  100% { box-shadow: 0 0 0 12px rgba(255,45,85,0); }
}

/* Blob wobble used in hero ornament */
@keyframes wobble {
  0%, 100% { border-radius: 42% 58% 66% 34% / 54% 46% 54% 46%; }
  50%      { border-radius: 62% 38% 40% 60% / 40% 62% 38% 60%; }
}