/* === Skeleton Loading Animations === */
@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

@keyframes skeleton-shimmer {
  0% {
    background-position: -200px 0;
  }
  100% {
    background-position: calc(200px + 100%) 0;
  }
}

.skeleton-shimmer {
  background: linear-gradient(90deg, #f0f0f0 25%, rgba(255,255,255,0.8) 37%, #f0f0f0 63%);
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-pulse {
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

/* Dark mode skeleton */
.dark .skeleton-shimmer {
  background: linear-gradient(90deg, #374151 25%, rgba(255,255,255,0.1) 37%, #374151 63%);
  background-size: 400px 100%;
}

/* === Performance optimizations === */
.skeleton-shimmer,
.skeleton-pulse {
  will-change: transform, opacity;
}

/* === Skeleton components === */
.skeleton-card {
  background: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  overflow: hidden;
  border: 1px solid #f3f4f6;
}

.skeleton-text {
  height: 1rem;
  background: #e5e7eb;
  border-radius: 0.25rem;
  background: linear-gradient(90deg, #f0f0f0 25%, rgba(255,255,255,0.8) 37%, #f0f0f0 63%);
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-title {
  height: 1.5rem;
  background: #e5e7eb;
  border-radius: 0.25rem;
  background: linear-gradient(90deg, #f0f0f0 25%, rgba(255,255,255,0.8) 37%, #f0f0f0 63%);
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-avatar {
  background: #e5e7eb;
  border-radius: 50%;
  background: linear-gradient(90deg, #f0f0f0 25%, rgba(255,255,255,0.8) 37%, #f0f0f0 63%);
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-image {
  background: #e5e7eb;
  background: linear-gradient(90deg, #f0f0f0 25%, rgba(255,255,255,0.8) 37%, #f0f0f0 63%);
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
}

.skeleton-button {
  background: #e5e7eb;
  border-radius: 0.5rem;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

/* === Loading states === */
.loading-enter {
  opacity: 0;
  transform: translateY(10px);
}

.loading-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* === Content fade-in === */
.content-fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

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

/* === Responsive skeleton adjustments === */
@media (max-width: 768px) {
  .skeleton-shimmer {
    animation-duration: 1.2s;
  }
}

/* === Prefers reduced motion === */
@media (prefers-reduced-motion: reduce) {
  .skeleton-shimmer,
  .skeleton-pulse {
    animation: none;
  }
  
  .skeleton-shimmer {
    background: #f0f0f0;
  }
  
  .dark .skeleton-shimmer {
    background: #374151;
  }
}