/* ============================================================

   animations.css · 动效系统

   ============================================================ */



@keyframes fadeInUp {

  from { opacity: 0; transform: translateY(10px); }

  to { opacity: 1; transform: translateY(0); }

}

.page-enter { animation: fadeInUp var(--duration-slow) var(--ease-out); }



.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out); }

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



.hover-lift { transition: box-shadow var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out); }

.hover-lift:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }



@keyframes lightPulse {

  0%, 100% { opacity: 0.3; }

  50% { opacity: 1; }

}

.light-dot { animation: lightPulse var(--duration-slower) infinite ease-in-out; }



@keyframes skeletonShimmer {

  0% { background-position: 200% 0; }

  100% { background-position: -200% 0; }

}



body, .site-header, .site-footer, .card {

  transition: background-color var(--duration-normal) var(--ease-in-out),

              color var(--duration-normal) var(--ease-in-out),

              border-color var(--duration-normal) var(--ease-in-out);

}



@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;

  }

  .light-dot { animation: none; opacity: 0.5; }

}