.seo-toc-container {
    padding: 20px;
    background: #fdfdfd;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
}

body.admin-bar .seo-toc-container {
    top: calc(100px + var(--wp-admin--admin-bar--height, 32px));
}

.seo-toc-header {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    border-bottom: 2px solid #eaeaea;
    padding-bottom: 8px;
}

.seo-toc-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.seo-toc-item {
    margin-bottom: 8px;
    line-height: 1.4;
}

.seo-toc-item.level-h2 { font-weight: 600; padding-left: 0; }
.seo-toc-item.level-h3 { font-weight: normal; padding-left: 12px; font-size: 0.95rem; }
.seo-toc-item.level-p { font-weight: normal; padding-left: 20px; font-size: 0.85rem; font-style: italic; }

.seo-toc-link {
    text-decoration: none;
    transition: color 0.2s ease;
}

.seo-toc-link:hover {
    text-decoration: underline;
}