/* Skeleton Screen Styles for NFT Marketplace */

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

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

/* Base skeleton elements */
.skeleton-loading {
  pointer-events: none;
  user-select: none;
}

.skeleton-line,
.skeleton-image,
.skeleton-banner,
.skeleton-avatar,
.skeleton-cell {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: 4px;
}

[data-theme="dark"] .skeleton-line,
[data-theme="dark"] .skeleton-image,
[data-theme="dark"] .skeleton-banner,
[data-theme="dark"] .skeleton-avatar,
[data-theme="dark"] .skeleton-cell {
  background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
  background-size: 200px 100%;
}

/* Skeleton grid layouts */
.skeleton-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  padding: 1rem;
}

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

[data-theme="dark"] .skeleton-nft-card {
  background: #1a1a24;
}

.skeleton-nft-card .skeleton-image {
  width: 100%;
  height: 200px;
  border-radius: 0;
}

.skeleton-nft-card .skeleton-content {
  padding: 1rem;
}

.skeleton-nft-card .skeleton-title {
  height: 20px;
  margin-bottom: 0.5rem;
  width: 80%;
}

.skeleton-nft-card .skeleton-subtitle {
  height: 16px;
  margin-bottom: 0.5rem;
  width: 60%;
}

.skeleton-nft-card .skeleton-price {
  height: 18px;
  width: 40%;
}

/* Collection Card Skeleton */
.skeleton-collection-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: relative;
}

[data-theme="dark"] .skeleton-collection-card {
  background: #1a1a24;
}

.skeleton-collection-card .skeleton-banner {
  width: 100%;
  height: 120px;
  border-radius: 0;
}

.skeleton-collection-card .skeleton-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  position: absolute;
  top: 90px;
  left: 1rem;
  border: 3px solid white;
}

[data-theme="dark"] .skeleton-collection-card .skeleton-avatar {
  border-color: #1a1a24;
}

.skeleton-collection-card .skeleton-content {
  padding: 2rem 1rem 1rem;
  margin-top: 1rem;
}

.skeleton-collection-card .skeleton-title {
  height: 20px;
  margin-bottom: 0.5rem;
  width: 70%;
}

.skeleton-collection-card .skeleton-subtitle {
  height: 16px;
  width: 50%;
}

/* Search Results Skeleton */
.skeleton-search-results {
  padding: 0.5rem;
}

.skeleton-search-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  border-bottom: 1px solid #eee;
}

[data-theme="dark"] .skeleton-search-item {
  border-bottom-color: #333;
}

.skeleton-search-item:last-child {
  border-bottom: none;
}

.skeleton-search-image {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  flex-shrink: 0;
}

.skeleton-search-content {
  flex: 1;
}

.skeleton-search-title {
  height: 16px;
  margin-bottom: 0.5rem;
  width: 70%;
}

.skeleton-search-subtitle {
  height: 14px;
  width: 50%;
}

/* Table Skeleton */
.skeleton-table {
  width: 100%;
}

.skeleton-table-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid #eee;
}

[data-theme="dark"] .skeleton-table-row {
  border-bottom-color: #333;
}

.skeleton-table-row:last-child {
  border-bottom: none;
}

.skeleton-cell {
  height: 20px;
}

/* Default Skeleton */
.skeleton-default {
  padding: 1rem;
}

.skeleton-default .skeleton-title {
  height: 24px;
  margin-bottom: 1rem;
  width: 60%;
}

.skeleton-default .skeleton-subtitle {
  height: 20px;
  margin-bottom: 0.75rem;
  width: 80%;
}

.skeleton-default .skeleton-content {
  height: 16px;
  width: 90%;
}

/* Loading Overlay Styles */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.loading-overlay.show {
  opacity: 1;
}

.loading-overlay.hide {
  opacity: 0;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid #F7931A;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.loading-progress {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}

.progress-bar {
  height: 100%;
  background: #F7931A;
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 2px;
}

/* Mobile Responsive Skeleton Styles */
@media (max-width: 768px) {
  .skeleton-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    padding: 0.5rem;
  }
  
  .skeleton-nft-card .skeleton-image {
    height: 180px;
  }
  
  .skeleton-collection-card .skeleton-banner {
    height: 100px;
  }
  
  .skeleton-collection-card .skeleton-avatar {
    width: 50px;
    height: 50px;
    top: 75px;
  }
  
  .skeleton-table-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    padding: 0.75rem;
  }
  
  .loading-spinner {
    width: 50px;
    height: 50px;
  }
  
  .loading-progress {
    width: 150px;
  }
}

@media (max-width: 480px) {
  .skeleton-grid {
    grid-template-columns: 1fr;
  }
  
  .skeleton-search-item {
    gap: 0.75rem;
    padding: 0.5rem;
  }
  
  .skeleton-search-image {
    width: 40px;
    height: 40px;
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  .skeleton-line,
  .skeleton-image,
  .skeleton-banner,
  .skeleton-avatar,
  .skeleton-cell,
  .loading-spinner {
    animation: pulse 2s infinite;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .skeleton-line,
  .skeleton-image,
  .skeleton-banner,
  .skeleton-avatar,
  .skeleton-cell {
    background: #666;
  }
  
  .loading-spinner {
    border-color: #fff;
    border-top-color: #000;
  }
}

/* Newsletter Styles */
.newsletter-message {
    border-radius: 6px;
    padding: 8px 12px;
    margin-top: 8px;
    font-size: 0.875rem;
    line-height: 1.4;
    animation: slideDown 0.3s ease-out;
}

.newsletter-message.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.newsletter-message.alert-danger {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.newsletter-form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.newsletter-form button:disabled:hover {
    transform: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dark theme support for newsletter messages */
[data-theme="dark"] .newsletter-message.alert-success {
    background-color: rgba(40, 167, 69, 0.2);
    border-color: rgba(40, 167, 69, 0.3);
    color: #9fdf9f;
}

[data-theme="dark"] .newsletter-message.alert-danger {
    background-color: rgba(220, 53, 69, 0.2);
    border-color: rgba(220, 53, 69, 0.3);
    color: #f5b7b1;
}