/* Three Column Layout for OJS Journal */
@media (min-width: 992px) {
    .pkp_structure_main {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: 2rem;
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 1.5rem;
    }
    
    /* Left column (wide) for main content */
    .pkp_structure_main > .pkp_structure_content {
        grid-column: 1;
    }
    
    /* Right column (sidebar) */
    .pkp_structure_sidebar {
        grid-column: 2;
    }
    
    /* Create three columns within main content */
    .pkp_page_index .pkp_structure_content {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    
    /* Style adjustments for three-column layout */
    .page_index_journal .current_issue,
    .page_index_journal .announcements,
    .page_index_journal .upcoming_issue,
    .page_index_journal .custom_block {
        grid-column: span 1;
        margin-bottom: 0;
    }
    
    /* Full width header/footer */
    .pkp_structure_head,
    .pkp_structure_footer {
        grid-column: 1 / -1;
    }
}

/* Demo-inspired styling enhancements */
.page_index_journal {
    font-family: 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

/* Announcements styling */
.announcements h2,
.current_issue h2,
.upcoming_issue h2 {
    background: #2c3e50;
    color: white;
    padding: 12px 15px;
    margin: 0 0 15px 0;
    font-size: 1.2rem;
    border-radius: 4px;
}

/* Article cards styling */
.obj_issue_toc .article {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 20px;
    transition: box-shadow 0.3s;
}

.obj_issue_toc .article:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.obj_issue_toc .article .title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

/* Badges and metadata */
.obj_issue_toc .article .meta {
    color: #6c757d;
    font-size: 0.9rem;
    margin: 8px 0;
}

.badge {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-right: 5px;
}