/* Table of Contents (TOC) Styles */
.toc-container {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    max-width: 250px;
    max-height: 80vh;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 5px 10px;
    z-index: 1000;
    overflow-y: auto;
    font-size: 14px;
    line-height: 1.4;
}

.toc-header {
    font-weight: bold;
    margin-bottom: 0;
    padding: 8px 0;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease;
}

.toc-header:hover {
    color: #007acc;
}

.toc-list {
    list-style: none;
    margin: 6px 0 0 0;
    padding: 6px 0 0 0;
    border-top: 1px solid #e0e0e0;
}

.toc-item {
    margin: 4px 0;
    padding-left: 0;
}

/* 目录列表展开/折叠状态 */
.toc-container.collapsed .toc-list {
    display: none;
}

.toc-container:not(.collapsed) .toc-list {
    display: block;
}

.toc-link {
    color: #555;
    text-decoration: none;
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.toc-link:hover {
    background: #f0f0f0;
    color: #007acc;
}

/* 移除选中状态样式，只保留hover效果 */

/* 响应式设计 */
@media (max-width: 1200px) {
    .toc-container {
        left: 10px;
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .toc-container {
        max-width: 180px;
        padding: 3px 8px;
        font-size: 13px;
    }
}