/* ========================================
   MVidarr Layout System
   Consistent page layouts and structure
======================================== */

/* Page Header Components */
.page-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--border-primary);
}

@media (min-width: 768px) {
    .page-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }
}

.page-title-section {
    flex: 1;
}

.page-title-section h1 {
    margin-bottom: var(--space-2);
}

.page-title-section p {
    margin-bottom: 0;
    font-size: var(--font-size-base);
    opacity: 0.8;
}

/* Secondary Actions Bar */
.secondary-actions {
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: var(--space-6);
}

.secondary-actions .action-group {
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 768px) {
    .secondary-actions .action-group {
        flex-direction: column;
        gap: var(--space-4);
        align-items: stretch;
    }
}

/* Selection Controls */
.selection-controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: relative;
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-bg);
}

.checkbox-label input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.checkbox-label input[type="checkbox"]:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 1px;
}

/* Advanced Search Panel */
.advanced-search-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: 0 2px 8px var(--shadow);
}

.search-header {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    margin-bottom: var(--space-6);
}

.search-input-container {
    flex: 1;
    position: relative;
}

.search-input-container input {
    width: 100%;
    padding: var(--space-3);
    font-size: var(--font-size-base);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.search-input-container input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--border-focus-shadow);
}

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    background-color: var(--bg-modal);
    border: 1px solid var(--border-primary);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: 0 4px 12px var(--shadow);
    max-height: 200px;
    overflow-y: auto;
}

/* Filter System */
.advanced-filters {
    display: grid;
    gap: var(--space-4);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.filter-group select,
.filter-group input {
    padding: var(--space-2);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--border-focus);
}

.filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    padding: 0 var(--space-1);
    margin-left: var(--space-1);
}

/* Search Results Info */
.search-results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Video Grid */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.video-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
    position: relative;
}

.video-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow);
    border-color: var(--border-hover);
}

.video-card:focus-within {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Bulk Actions Panel */
.bulk-actions-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: 0 2px 8px var(--shadow);
}

.bulk-actions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.bulk-actions-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.bulk-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-3);
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) 0;
    border-top: 1px solid var(--border-primary);
    margin-top: var(--space-8);
}

.pagination-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.page-input {
    width: 60px;
    padding: var(--space-1);
    text-align: center;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
}

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: var(--space-6);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .videos-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--space-4);
    }
}

@media (max-width: 768px) {
    .page-header {
        padding-bottom: var(--space-4);
        margin-bottom: var(--space-6);
    }
    
    .secondary-actions {
        padding: var(--space-3) 0;
        margin-bottom: var(--space-4);
    }
    
    .advanced-search-panel {
        padding: var(--space-4);
    }
    
    .search-header {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .filter-row {
        grid-template-columns: 1fr;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .pagination-container {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .selection-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .video-card,
    .advanced-search-panel,
    .bulk-actions-panel {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .video-card {
        transition: none;
    }
    
    .video-card:hover {
        transform: none;
    }
    
    .loading-spinner {
        animation: none;
    }
}