/* =========================================================
   motion.css — initial states + animated decoration.
   Matches the reference site's IntersectionObserver pattern:
   elements start hidden, JS adds .is-revealed on intersect.
   ========================================================= */

/* ---------- Animated gradient signature ---------- */
.serif-italic-gradient {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(
    100deg,
    var(--grad-1) 0%,
    var(--grad-2) 25%,
    var(--grad-3) 50%,
    var(--grad-4) 75%,
    var(--grad-2) 100%
  );
  background-size: 220% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 9s linear infinite;
  letter-spacing: -0.01em;
  padding-inline: 0.04em;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 220% 50%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .serif-italic-gradient {
    animation: none;
    background-position: 0% 50%;
  }
}

/* ---------- Reveal initial states (set by JS toggling .is-revealed) ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-distance));
  transition:
    opacity var(--dur-3) var(--ease-out-quint),
    transform var(--dur-3) var(--ease-out-quint);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Direction variants */
[data-reveal="left"] {
  transform: translateX(calc(var(--reveal-distance) * -1.2));
}
[data-reveal="left"].is-revealed {
  transform: translateX(0);
}

[data-reveal="right"] {
  transform: translateX(calc(var(--reveal-distance) * 1.2));
}
[data-reveal="right"].is-revealed {
  transform: translateX(0);
}

[data-reveal="scale"] {
  transform: scale(0.94);
}
[data-reveal="scale"].is-revealed {
  transform: scale(1);
}

/* Stagger via inline --i custom prop, set by JS or HTML */
[data-reveal][style*="--i"] {
  transition-delay: calc(var(--i, 0) * 70ms);
}

/* Hero name chars — outer clip + inner slide-up.
   JS wraps each char in <span class="char"><span class="char-inner">X</span></span>
   and sets --i per char. .is-revealed on the h1 triggers the stagger. */
.hero__name .char {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
  /* small breathing room so descenders/diacritics aren't clipped */
  padding-bottom: 0.06em;
}

.hero__name .char-inner {
  display: inline-block;
  transform: translateY(105%);
  transition: transform var(--dur-4) var(--ease-out-expo);
  /* Stagger via per-char --i custom property (set by hero.js) */
  transition-delay: calc(var(--i, 0) * 45ms);
  will-change: transform;
}

.hero__name.is-revealed .char-inner {
  transform: translateY(0);
}

/* ---------- Marquee animation hooks ---------- */
.marquee__track[data-paused="true"] {
  animation-play-state: paused;
}

/* ---------- Reduced motion fallback ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .hero__name .char-inner {
    transform: none !important;
    transition: none !important;
  }
}