html {
    scroll-behavior: smooth;
}

.ck-content h2, .ck-content h3 {
    scroll-margin-top: 70px; 
}

#toc-container {
    background: #f9f9f9;
    padding: 15px 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    width: 100%; 
    box-sizing: border-box; 
    margin: 20px 0;
}
.toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
    margin-bottom: 10px;
}
.toc-title {
    font-weight: bold;
    margin: 0;
    font-size: 1.1rem;
}
.toc-toggle-btn {
    background: none;
    border: 1px solid #ccc;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    color: #555;
}
.toc-toggle-btn:hover {
    background: #eee;
}
#table-of-contents ul {
    list-style-type: none;
    padding-left: 10px;
    margin: 0;
}
#table-of-contents li {
    margin: 8px 0;
}
#table-of-contents a {
    text-decoration: none;
    color: #0066cc;
}
#table-of-contents a:hover {
    text-decoration: underline;
}
#table-of-contents ul ul {
    padding-left: 20px;
}
/* Thuộc tính ẩn danh sách mục lục khi bấm nút */
.toc-hidden {
    display: none;
}