/* Container for the article directory */
.directory-container {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    z-index: 1000;
}

/* Directory toggle button */
.directory-toggle {
    position: absolute;
    right: 0;
    top: 0;
    height: 100vh; /* 高度设为视口高度 */
    background-color: #f0f0f0; /* 浅灰色填充背景 */
    color: #000000; /* 图标或文字为黑色 */
    padding: 0; /* 移除内边距，确保按钮占满高度 */
    display: flex;
    align-items: center;
    justify-content: center; /* 图标在垂直和水平方向居中 */
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1001;
}

/* Moved-left class to move the icon to the left side of the directory */
.directory-toggle.moved-left {
    right: 300px;  /* 移动到目录的左边 */
}

/* Icon size */
.iconify {
    font-size: 18px;
}

/* Article directory container */
.article-directory {
    background-color: rgba(255,255,255,0.8);
    width: 300px;
    height: 100%;
    box-shadow: -2px 0px 5px rgba(0,0,0,0.1);
    overflow-y: auto;
    position: absolute;
    top: 0;
    right: -300px;
    transition: right 0.3s ease;
    padding-top: 50px;
}

/* Expanded state */
.directory-expanded .article-directory {
    right: 0;
}

/* Directory icon styling when expanded */
.directory-expanded #toggle-icon {
    transform: rotate(180deg);
}

/* Directory link styles */
.article-directory a {
    text-decoration: none;
    color: #000;
    display: block;
    padding: 5px 10px;
    transition: background-color 0.3s, color 0.3s;
    width: auto;
}

/* Hover effect */
.article-directory a:hover {
    background-color: #f0f0f0;
    color: #7A9C96;
}

/* Clicked/active effect */
.article-directory a.active {
    color: red;
    font-weight: bold;
}

/* Active (current) heading link */
.article-directory a:active {
    color: red;
}

/* Main title styling */
.toc-main-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 18px;
    text-align: left;
    padding: 10px 0px;
    border-bottom: 2px solid #ddd;
}

/* 目录字样 */
.toc-label {
    font-size: 20px;
    color: #666;
    margin: 0 0 18px 0px;
}