/* Keyframes */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}
/* Animation Classes */
.fade-in {
  animation: fadeIn var(--transition-normal) forwards;
}
.slide-in {
  animation: slideIn var(--transition-normal) forwards;
}
.scale-in {
  animation: scaleIn var(--transition-normal) forwards;
}
/* Loading Spinner */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
}
.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}
/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg,
      var(--gray-200) 25%,
      var(--gray-300) 37%,
      var(--gray-200) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s infinite;
}
/* Notification System */
.notification-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2500;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.notification {
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-md);
  background: var(--white);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: slideIn var(--transition-normal);
  max-width: 300px;
}
.notification.success {
  border-left: 4px solid var(--success-color);
}
.notification.error {
  border-left: 4px solid var(--error-color);
}
.notification.info {
  border-left: 4px solid var(--primary-color);
}
/* Product Card Animations */
.product-card {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}
.product-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.product-card:hover {
  transform: translateY(-10px);
}
/* Button Hover Effects */
.button-modern {
  position: relative;
  overflow: hidden;
}
.button-modern::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right,
      transparent 0%,
      rgba(255, 255, 255, 0.2) 50%,
      transparent 100%);
  transition: left 0.5s;
}
.button-modern:hover::after {
  left: 100%;
}
/* Cart Button Animation */
@keyframes bounce {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}
.cart-button.bounce {
  animation: bounce 0.5s;
}
/* Form Input Focus Effects */
.input-modern:focus {
  transform: translateY(-2px);
}
/* Image Hover Effects */
.product-image {
  overflow: hidden;
}
.product-image img {
  transition: transform var(--transition-normal);
}
.product-image:hover img {
  transform: scale(1.1);
}
/* Modal Animations */
@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.modal.show .modal-content {
  animation: modalFadeIn var(--transition-normal);
}