/* ============================================================
   atmosfere Animations
   Source: atmosfere Brand Guidelines §18.11
   ============================================================ */

/* ── Keyframes ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.8; }
}

/* ── Scroll-triggered animation classes ── */
@media (prefers-reduced-motion: no-preference) {
  .animate-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* Stagger delay helpers */
  .delay-100 { transition-delay: 100ms; }
  .delay-200 { transition-delay: 200ms; }
  .delay-300 { transition-delay: 300ms; }
  .delay-400 { transition-delay: 400ms; }

  /* Inline animation classes */
  .animate-fade-in {
    animation: fadeIn var(--ease-premium) forwards;
  }
  .animate-fade-in-up {
    animation: fadeInUp var(--ease-premium) forwards;
  }
  .animate-glow {
    animation: glowPulse 3s ease-in-out infinite;
  }

  /* Stagger children */
  .stagger > *:nth-child(1) { animation-delay: 0ms;   }
  .stagger > *:nth-child(2) { animation-delay: 80ms;  }
  .stagger > *:nth-child(3) { animation-delay: 160ms; }
  .stagger > *:nth-child(4) { animation-delay: 240ms; }
}

/* Reduced-motion: show everything immediately */
@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}