/* Optional monthly context stays outside the default research-update feed. */
.blog-section-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.blog-section-tabs [role="tab"] {
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    border-bottom: 3px solid transparent;
    border-radius: 0.5rem 0.5rem 0 0;
    padding: 0.75rem 1rem;
    font-weight: 600;
}

.blog-section-tabs [aria-selected="true"] {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--border-color);
    border-bottom: 3px solid var(--accent-blue, #60a5fa);
}

.blog-section-tabs [role="tab"]:focus-visible,
.blog-monthly-card a:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 3px;
}

#blog-sections [role="tabpanel"][hidden] {
    display: none !important;
}

.blog-summary-note,
.blog-monthly-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.blog-monthly-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.blog-monthly-card {
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    min-width: 0;
}

.blog-monthly-card .blog-summary-month {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.blog-monthly-card h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.4;
}

.blog-monthly-card a {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

@media (max-width: 767px) {
    .blog-monthly-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .blog-section-tabs [role="tab"] {
        padding: 0.75rem;
    }
}