/* Tokyo Jet Lag — Skeleton Loading Animations
 * Dark theme skeleton shimmer UI for fast perceived performance
 */

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

@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/* Base skeleton class */
.skeleton {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 1rem;
}

/* Text skeleton — multiple lines */
.skeleton-text {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 0.875rem;
  margin-bottom: 0.75rem;
}

.skeleton-text:last-child {
  margin-bottom: 0;
}

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

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

.skeleton-text.long {
  width: 100%;
}

/* Image skeleton */
.skeleton-image {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.5rem;
  aspect-ratio: 16 / 9;
  width: 100%;
}

.skeleton-image.square {
  aspect-ratio: 1 / 1;
}

.skeleton-image.small {
  height: 150px;
  width: 150px;
}

/* Card skeleton — mimics venue card layout */
.skeleton-card {
  background-color: #09090b;
  border: 1px solid #27272a;
  border-radius: 0.5rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skeleton-card-image {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 200px;
  width: 100%;
}

.skeleton-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.skeleton-card-title {
  flex: 1;
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 1.25rem;
}

.skeleton-card-badge {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.25rem;
  height: 1.5rem;
  width: 60px;
  flex-shrink: 0;
}

.skeleton-card-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skeleton-card-text {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 0.875rem;
}

.skeleton-card-text.long {
  width: 100%;
}

.skeleton-card-text.short {
  width: 70%;
}

.skeleton-card-footer {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.skeleton-card-meta {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 0.75rem;
  flex: 1;
}

/* Avatar skeleton */
.skeleton-avatar {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 9999px;
  aspect-ratio: 1 / 1;
}

.skeleton-avatar.small {
  height: 32px;
  width: 32px;
}

.skeleton-avatar.medium {
  height: 48px;
  width: 48px;
}

.skeleton-avatar.large {
  height: 64px;
  width: 64px;
}

/* Title skeleton */
.skeleton-title {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 2rem;
  width: 50%;
  margin-bottom: 1.5rem;
}

/* Pulse animation variant */
.skeleton.pulse,
.skeleton-text.pulse,
.skeleton-image.pulse,
.skeleton-avatar.pulse,
.skeleton-title.pulse {
  animation: skeleton-pulse 2s ease-in-out infinite;
}

/* Grid layout for multiple skeletons */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.skeleton-grid .skeleton-card {
  min-height: 400px;
}

/* Skeleton list layout */
.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skeleton-list-item {
  background-color: #09090b;
  border: 1px solid #27272a;
  border-radius: 0.375rem;
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.skeleton-list-avatar {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 9999px;
  height: 48px;
  width: 48px;
  flex-shrink: 0;
}

.skeleton-list-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skeleton-list-title {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 1rem;
  width: 70%;
}

.skeleton-list-text {
  background: linear-gradient(
    90deg,
    #18181b 0%,
    #27272a 50%,
    #18181b 100%
  );
  background-size: 2000px 100%;
  animation: skeleton-shimmer 2s infinite;
  border-radius: 0.375rem;
  height: 0.75rem;
  width: 50%;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .skeleton-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }

  .skeleton-card {
    padding: 0.75rem;
  }

  .skeleton-title {
    height: 1.5rem;
    width: 70%;
  }
}

@media (max-width: 480px) {
  .skeleton-grid {
    grid-template-columns: 1fr;
  }

  .skeleton-card-image {
    height: 150px;
  }

  .skeleton-list-item {
    padding: 0.75rem;
  }
}