/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

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

@keyframes loadProgress {
  0% { width: 0%; }
  30% { width: 40%; }
  70% { width: 75%; }
  100% { width: 100%; }
}

@keyframes reelSpin {
  0%, 100% { transform: translateY(0); }
  20% { transform: translateY(-56px); }
  40% { transform: translateY(-112px); }
  60% { transform: translateY(-56px); }
  80% { transform: translateY(0); }
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-20px) rotate(5deg); }
  50% { transform: translateY(-10px) rotate(-3deg); }
  75% { transform: translateY(-25px) rotate(3deg); }
}

@keyframes slideInToast {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutToast {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100px);
  }
}

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

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(212,175,55,0.2); }
  50% { box-shadow: 0 0 30px rgba(212,175,55,0.4); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroParticle {
  0% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100vh) translateX(50px);
    opacity: 0;
  }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }

/* Pulse animation for current level */
.level-node.pulse {
  animation: pulseGlow 2s ease-in-out infinite;
}

/* Hero particle animation */
.hero-particle {
  animation: heroParticle var(--duration) linear infinite;
  animation-delay: var(--delay);
}