/* =========================================== */
/* MOBILE SKELETON SCREENS */
/* Loading placeholders for better perceived performance */
/* =========================================== */

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 8px;
}

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

.skeleton-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.skeleton-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-text {
  height: 16px;
  margin: 12px 16px;
  border-radius: 4px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-text.medium {
  width: 80%;
}

.skeleton-title {
  height: 24px;
  margin: 16px 16px 12px;
  width: 70%;
  border-radius: 4px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-button {
  height: 44px;
  width: 120px;
  margin: 16px;
  border-radius: 8px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

/* Artwork card skeleton */
.skeleton-artwork-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.skeleton-artwork-image {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-artwork-title {
  height: 16px;
  margin: 12px 12px 8px;
  width: 60%;
  border-radius: 4px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-artwork-category {
  height: 12px;
  margin: 0 12px 12px;
  width: 40%;
  border-radius: 4px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

/* Gallery skeleton grid */
.skeleton-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  padding: 1rem;
}

@media (max-width: 768px) {
  .skeleton-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding: 0.75rem;
  }
}

/* Fade out skeleton when content loads */
.skeleton-fade-out {
  animation: skeleton-fade-out 0.3s ease-out forwards;
}

@keyframes skeleton-fade-out {
  to {
    opacity: 0;
    visibility: hidden;
  }
}