/* =====================================
   Skeleton Loading Animations
   Better Perceived Performance
   ===================================== */

/* Base Skeleton Element */
.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #e0e0e0 50%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 4px;
    display: block;
    height: 100%;
    width: 100%;
}

/* Dark Mode Skeleton */
.dark-mode .skeleton {
    background: linear-gradient(
        90deg,
        #2a2a2a 0%,
        #3a3a3a 50%,
        #2a2a2a 100%
    );
    background-size: 200% 100%;
}

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

/* Skeleton Table Component */
.skeleton-table-component {
    width: 100%;
    padding: 1rem;
    background: #fff;
    border-radius: 0.375rem;
}

.dark-mode .skeleton-table-component {
    background: var(--bg-primary, #1a1d20);
}

.skeleton-table-header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
}

.skeleton-search-box {
    flex: 1;
    max-width: 300px;
}

.skeleton-search-box .skeleton-input {
    height: 38px;
}

.skeleton-actions {
    display: flex;
    gap: 0.5rem;
}

.skeleton-button {
    width: 120px;
    height: 38px;
}

.skeleton-button-sm {
    width: 36px;
    height: 36px;
}

/* Skeleton Table Content */
.skeleton-table-content-section {
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.dark-mode .skeleton-table-content-section {
    border-color: #495057;
}

.skeleton-table-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #dee2e6;
}

.dark-mode .skeleton-table-row {
    border-bottom-color: #495057;
}

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

.skeleton-header-row {
    background-color: #f8f9fa;
}

.dark-mode .skeleton-header-row {
    background-color: #1e2125;
}

.skeleton-table-cell-header {
    height: 20px;
}

.skeleton-table-cell-body {
    height: 16px;
}

/* Skeleton Table Footer */
.skeleton-table-footer-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
}

.skeleton-pagination {
    display: flex;
    gap: 0.25rem;
}

.skeleton-text {
    height: 20px;
}

/* Skeleton Stats Grid */
.skeleton-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.skeleton-stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: 0.5rem;
    border: 1px solid #dee2e6;
}

.dark-mode .skeleton-stat-card {
    background: var(--bg-primary, #1a1d20);
    border-color: #495057;
}

.skeleton-stat-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
}

.skeleton-circle {
    border-radius: 50%;
}

.skeleton-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.skeleton-title {
    height: 28px;
    margin-bottom: 0.5rem;
}

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

.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #fff;
    border-radius: 0.5rem;
    border: 1px solid #dee2e6;
}

.dark-mode .skeleton-list-item {
    background: var(--bg-primary, #1a1d20);
    border-color: #495057;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    flex-shrink: 0;
}

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

/* Skeleton Card */
.skeleton-card {
    padding: 1.5rem;
    background: #fff;
    border-radius: 0.5rem;
    border: 1px solid #dee2e6;
}

.dark-mode .skeleton-card {
    background: var(--bg-primary, #1a1d20);
    border-color: #495057;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .skeleton-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .skeleton-table-header-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .skeleton-search-box {
        max-width: 100%;
    }
    
    .skeleton-table-footer-section {
        flex-direction: column;
        gap: 1rem;
    }
    
    .skeleton-pagination {
        justify-content: center;
    }
}

/* Accessibility */
.skeleton[aria-hidden="true"] {
    pointer-events: none;
    user-select: none;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .skeleton {
        animation: none;
        background: #e0e0e0;
    }
    
    .dark-mode .skeleton {
        background: #3a3a3a;
    }
}