/**
 * Collapsible Filter Sections Styles
 * Enterprise-grade styling for accordion/collapsible filter groups
 */

.filter-accordion-container {
    width: 100%;
    margin-bottom: 20px;
}

.filter-accordion-section {
    margin-bottom: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: #fff;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}

.filter-accordion-section:hover {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.filter-accordion-section.expanded {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.filter-accordion-header {
    width: 100%;
    padding: 14px 16px;
    background: #f8f9fa;
    border: none;
    cursor: pointer;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color 0.2s ease;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    outline: none;
}

.filter-accordion-header:hover {
    background: #e9ecef;
}

.filter-accordion-header:focus {
    background: #e9ecef;
    box-shadow: inset 0 0 0 2px #007bff;
}

.filter-accordion-header[aria-expanded="true"] {
    background: #e7f3ff;
    border-bottom: 1px solid #cfe2ff;
}

.filter-accordion-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.filter-accordion-title {
    flex: 1;
    font-weight: 600;
    color: #333;
}

.filter-accordion-icon {
    font-size: 12px;
    color: #666;
    transition: transform 0.2s ease, color 0.2s ease;
    margin-left: 12px;
}

.filter-accordion-header[aria-expanded="true"] .filter-accordion-icon {
    color: #007bff;
}

.filter-accordion-content {
    padding: 16px;
    background: #fff;
    display: none;
    animation: slideDown 0.3s ease-out;
}

.filter-accordion-content[style*="block"] {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 1000px;
    }
}

.filter-accordion-content .filter-group {
    margin-bottom: 16px;
}

.filter-accordion-content .filter-group:last-child {
    margin-bottom: 0;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .filter-accordion-header {
        padding: 12px;
        font-size: 14px;
    }
    
    .filter-accordion-content {
        padding: 12px;
    }
    
    .filter-accordion-content .filter-group {
        margin-bottom: 12px;
    }
}

/* Accessibility - Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .filter-accordion-content {
        animation: none;
    }
    
    .filter-accordion-icon {
        transition: none;
    }
}

/* Dark mode support (if needed) */
@media (prefers-color-scheme: dark) {
    .filter-accordion-section {
        background: #2d2d2d;
        border-color: #444;
    }
    
    .filter-accordion-header {
        background: #3d3d3d;
        color: #fff;
    }
    
    .filter-accordion-header:hover {
        background: #4d4d4d;
    }
    
    .filter-accordion-header[aria-expanded="true"] {
        background: #1a3a5c;
        border-bottom-color: #2a4a6c;
    }
    
    .filter-accordion-content {
        background: #2d2d2d;
    }
    
    .filter-accordion-title {
        color: #fff;
    }
    
    .filter-accordion-icon {
        color: #ccc;
    }
}