/* ============================================================
   Animations — ゲームライブラリ
   ============================================================ */

/* ---- Keyframes -------------------------------------------- */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.90);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-6px) rotate(-3deg); }
  66%       { transform: translateY(-3px) rotate(2deg); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.6; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ---- Utility classes -------------------------------------- */

/* Cards stagger in on page load.
   catalog.js sets --delay inline style per card (index * 60ms, max 600ms). */
.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
  animation-delay: var(--delay, 0ms);
}

.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.45s ease both;
}

/* Logo icon bobs gently forever */
.animate-float {
  animation: float 4s ease-in-out infinite;
  display: inline-block;
}

/* Empty state pops in */
.animate-scale-in {
  opacity: 0;
  animation: scaleIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* Pulsing placeholder text */
.animate-pulse {
  animation: pulse-soft 1.8s ease-in-out infinite;
}