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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-12px); }
  60% { transform: translateX(-50%) translateY(-6px); }
}

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

@keyframes borderPulse {
  0%, 100% { border-color: var(--primary); }
  50% { border-color: transparent; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px var(--shadow); }
  50% { box-shadow: 0 0 30px var(--shadow-lg), 0 0 60px var(--shadow); }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

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

@keyframes auroraFlow {
  0% { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(200%) skewX(-15deg); }
}

@keyframes confettiFall {
  0% { transform: translateY(-100vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes slideDown {
  from {
    max-height: 0;
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card, .pricing-card, .step, .stat-item {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn, .theme-toggle, .payment-method {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a::after {
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drop-zone {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal {
  animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-icon {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.pricing-card.popular {
  animation: glowPulse 2s ease-in-out infinite;
}

.nav-logo i {
  animation: pulse 2s ease-in-out infinite;
}

.scroll-indicator {
  animation: bounce 2s infinite;
}

.drop-zone.drag-over {
  animation: borderPulse 1s infinite;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

.drop-tooltip {
  animation: fadeIn 0.3s ease, fadeOut 0.3s ease 2.2s forwards;
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

/* Dock navbar entrance */
@keyframes dockSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}