/**
 * Animationen für InovaTech Website
 * Keyframes, Scroll-Reveals (IntersectionObserver setzt .is-visible),
 * Reduced-Motion-Überschreibungen.
 */

/* ==================== KEYFRAMES ==================== */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scroll-hint {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(12px);
  }
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 24px rgba(230, 57, 70, 0.25);
  }
  50% {
    box-shadow: 0 0 56px rgba(230, 57, 70, 0.5);
  }
}

/* ==================== SCROLL-REVEALS ==================== */

/* Grundzustand: unsichtbar, leicht versetzt (JS setzt .is-visible) */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Gestaffelte Kinder (z. B. Karten im Grid) */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-stagger.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 70ms; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 140ms; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 210ms; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 280ms; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 350ms; }
.reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 420ms; }
.reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 490ms; }

/* Hero-Inhalt: sanfter Auftritt beim Laden */
.hero__content > * {
  animation: fade-up 1s var(--ease-out) both;
}

.hero__content > *:nth-child(1) { animation-delay: 100ms; }
.hero__content > *:nth-child(2) { animation-delay: 250ms; }
.hero__content > *:nth-child(3) { animation-delay: 400ms; }

/* ==================== REDUCED MOTION / NO-JS ==================== */

/* Ohne JS bzw. mit reduzierter Bewegung: alles sofort sichtbar */
.no-js .reveal,
.no-js .reveal-stagger > *,
.reduced-motion .reveal,
.reduced-motion .reveal-stagger > * {
  opacity: 1;
  transform: none;
  transition: none;
}

.no-js .hero__content > *,
.reduced-motion .hero__content > * {
  animation: none;
}

.reduced-motion .scroll-indicator::before {
  animation: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }

  .hero__content > * {
    animation: none;
  }
}