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

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

@keyframes slideInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-slide-in-down {
  animation: slideInDown var(--transition-base) ease-out;
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-slide-in-up {
  animation: slideInUp var(--transition-base) ease-out;
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-slide-in-left {
  animation: slideInLeft var(--transition-base) ease-out;
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-base) ease-out;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-scale-in {
  animation: scaleIn var(--transition-base) ease-out;
}

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

.animate-bounce {
  animation: bounce 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.animate-shimmer {
  animation: shimmer 2s infinite;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
  background-size: 1000px 100%;
}

.hover-lift {
  transition: all var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow {
  transition: all var(--transition-base);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
}

.hover-primary {
  transition: all var(--transition-base);
  color: var(--color-text-secondary);
}

.hover-primary:hover {
  color: var(--color-primary);
}

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

.animate-spin {
  animation: spin 1s linear infinite;
}

@keyframes progress {
  0% { width: 0%; }
}

.progress-bar {
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  animation: progress 2s ease-in-out infinite;
}

.transition-all {
  transition: all var(--transition-base);
}

.transition-colors {
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.transition-transform {
  transition: transform var(--transition-base);
}

.transition-opacity {
  transition: opacity var(--transition-base);
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradient 3s ease infinite;
}

.list-item-stagger {
  animation: slideInUp var(--transition-base) ease-out backwards;
}

.list-item-stagger:nth-child(1) { animation-delay: 0ms; }
.list-item-stagger:nth-child(2) { animation-delay: 50ms; }
.list-item-stagger:nth-child(3) { animation-delay: 100ms; }
.list-item-stagger:nth-child(4) { animation-delay: 150ms; }
.list-item-stagger:nth-child(5) { animation-delay: 200ms; }

@keyframes ripple {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

.btn::after {
  content: '';
  position: absolute;
  width: 50%;
  height: 50%;
  background: rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-full);
  pointer-events: none;
  opacity: 0;
}

.btn:active::after {
  animation: ripple 0.6s ease-out;
}