/* ==========================================================================
   Motion System
   - Tokens leben in tokens.css
   - Komponenten-Hover-States in components.css
   - Hier: globale Reveal-Logik, Loader, Hero-Entry, Reduced Motion
   ========================================================================== */

/* ---------- Reveal-on-Scroll (Vanilla, via IntersectionObserver in motion.js) ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(var(--offset-md));
  transition:
    opacity var(--duration-lg) var(--ease-standard),
    transform var(--duration-lg) var(--ease-standard);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal="fade"] {
  transform: none;
}

[data-reveal="slide-left"] {
  transform: translateX(calc(var(--offset-lg) * -1));
}

[data-reveal="slide-right"] {
  transform: translateX(var(--offset-lg));
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* Staggered children: parent has data-reveal-stagger, each child gets index-based delay via JS */

/* ---------- Hero Entry Sequence ---------- */
.hero [data-hero-anim] {
  opacity: 0;
  transform: translateY(var(--offset-sm));
  animation: hero-rise var(--duration-lg) var(--ease-precise) forwards;
  animation-delay: var(--hero-delay, 0ms);
}

@keyframes hero-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero [data-hero-anim="title"] {
  transform: translateY(var(--offset-md));
  animation-duration: 800ms;
}

/* ---------- Loading Screen ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  background-color: var(--color-anthracite);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-6);
  transition:
    opacity 600ms var(--ease-exit),
    visibility 0s linear 600ms;
}

.loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__signet {
  width: 64px;
  height: auto;
  opacity: 0;
  transform: translateY(8px);
  animation: loader-in 700ms var(--ease-precise) 100ms forwards;
}

/* Loader-Signet nutzt eigene Farben aus dem SVG (Brass auf Anthrazit) –
   passend zum neuen Brand-Logo mit quadratischem Container und Brass-M. */

.loader__bar {
  width: 80px;
  height: 1px;
  background-color: rgba(245, 241, 234, 0.15);
  overflow: hidden;
  position: relative;
}

.loader__bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--color-brass);
  transform: translateX(-100%);
  animation: loader-bar 1400ms var(--ease-standard) 200ms forwards;
}

.loader__label {
  font-size: 0.625rem;
  letter-spacing: 0.32em;
  color: var(--color-paper);
  opacity: 0;
  text-transform: uppercase;
  animation: loader-in 700ms var(--ease-precise) 200ms forwards;
}

@keyframes loader-in {
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

@keyframes loader-bar {
  to { transform: translateX(0); }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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

  .hero [data-hero-anim] {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .hero__bg img {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero__scroll-line { animation: none; }

  .loader { display: none; }
}