/* TOC Styles */
.toc-nav {
    padding: 1rem 0;
    flex: 1;
    overflow-y: auto;
}

.toc-nav ul {
    list-style: none;
    padding-left: 0;
}

.toc-nav li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.toc-nav li::before {
    content: '#';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary-color);
    opacity: 0.5;
    font-size: 0.9em;
}

.toc-nav li.header-h1 {
    padding-left: 0;
    font-weight: 600;
    margin-bottom: 1rem;
}

.toc-nav li.header-h1::before {
    display: none;
}

.toc-nav li.header-h2 {
    padding-left: 1rem;
}

.toc-nav li.header-h3 {
    padding-left: 2rem;
    font-size: 0.9rem;
}

.toc-nav li.header-h4 {
    padding-left: 3rem;
    font-size: 0.85rem;
}

.toc-nav a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    padding: 0.25rem 0;
}

.toc-nav a:hover {
    color: var(--primary-color);
}

.toc-nav a.active {
    color: var(--primary-color);
    font-weight: 500;
}