/**
 * 桌面端TOC样式 - 右侧滑设计
 */

/* 桌面端TOC容器 */
.toc-desktop {
    position: fixed;
    top: var(--header-height, 60px);
    right: 0;
    bottom: 0;
    width: 280px;
    background: var(--sidebar-bg, #f8fafc);
    border-left: 1px solid var(--border-color, #e2e8f0);
    z-index: 40;
    overflow: hidden;
    transition: transform 0.3s ease;
    transform: translateX(0);
}

/* 隐藏状态 */
.toc-desktop.hidden {
    transform: translateX(100%);
}

/* 切换按钮 */
.toc-desktop-toggle {
    position: fixed;
    top: 50%;
    right: 280px;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
    background: var(--sidebar-bg, #f8fafc);
    border: 1px solid var(--border-color, #e2e8f0);
    border-right: none;
    border-radius: 8px 0 0 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 41;
    transition: all 0.3s ease;
    color: var(--text-light, #64748b);
}

.toc-desktop-toggle:hover {
    background: var(--bg-hover, #f1f5f9);
    color: var(--primary-color, #3eaf7c);
}

.toc-desktop.hidden + .toc-desktop-toggle {
    right: 0;
    border-radius: 8px 0 0 8px;
}

.toc-desktop-toggle-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.toc-desktop.hidden + .toc-desktop-toggle .toc-desktop-toggle-icon {
    transform: rotate(180deg);
}

/* TOC包装器 */
.toc-desktop-wrapper {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--sidebar-bg, #f8fafc);
}

/* TOC头部 */
.toc-desktop-header {
    padding: 1.5rem 1.25rem 1rem;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    background: var(--sidebar-header-bg, #ffffff);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.toc-desktop-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color, #2d3748);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.025em;
}

.toc-icon {
    color: var(--primary-color, #3eaf7c);
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* TOC导航 */
.toc-desktop-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
    background: var(--sidebar-bg, #f8fafc);
}

.toc-desktop-nav::-webkit-scrollbar {
    width: 6px;
}

.toc-desktop-nav::-webkit-scrollbar-track {
    background: var(--sidebar-bg, #f8fafc);
    border-radius: 3px;
}

.toc-desktop-nav::-webkit-scrollbar-thumb {
    background: var(--border-color, #e2e8f0);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.toc-desktop-nav::-webkit-scrollbar-thumb:hover {
    background: var(--text-light, #a0aec0);
}

/* TOC列表 */
.toc-desktop-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-desktop-item {
    margin: 0;
}

/* TOC链接 */
.toc-desktop-link {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--sidebar-text, #64748b);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 1.5;
    border-left: 3px solid transparent;
    transition: all 0.25s ease;
    word-break: break-word;
    position: relative;
    margin: 0.125rem 0;
}

.toc-desktop-link:hover {
    color: var(--primary-color, #3eaf7c);
    background: var(--sidebar-hover, #ffffff);
    border-left-color: var(--primary-color, #3eaf7c);
    transform: translateX(2px);
}

.toc-desktop-link.active {
    color: var(--primary-color, #3eaf7c);
    background: var(--sidebar-active, #ffffff);
    border-left-color: var(--primary-color, #3eaf7c);
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 不同级别的标题缩进 */
.toc-level-1 .toc-desktop-link {
    padding-left: 1.25rem;
    font-weight: 600;
    font-size: 0.9375rem;
}

.toc-level-2 .toc-desktop-link {
    padding-left: 1.75rem;
    font-weight: 500;
}

.toc-level-3 .toc-desktop-link {
    padding-left: 2.25rem;
    font-size: 0.8125rem;
    opacity: 0.9;
}

.toc-level-4 .toc-desktop-link {
    padding-left: 2.75rem;
    font-size: 0.8125rem;
    opacity: 0.85;
}

.toc-level-5 .toc-desktop-link {
    padding-left: 3.25rem;
    font-size: 0.75rem;
    opacity: 0.8;
}

.toc-level-6 .toc-desktop-link {
    padding-left: 3.75rem;
    font-size: 0.75rem;
    opacity: 0.75;
}

/* 响应式隐藏 */
@media (max-width: 1199px) {
    .toc-desktop {
        display: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .toc-desktop,
    .toc-desktop-toggle {
        --sidebar-bg: #1a202c;
        --sidebar-header-bg: #2d3748;
        --sidebar-hover: #2d3748;
        --sidebar-active: #2d3748;
        --sidebar-text: #a0aec0;
        --border-color: #4a5568;
        --text-color: #e2e8f0;
        --text-light: #a0aec0;
        --primary-color: #68d391;
        --bg-hover: #2d3748;
    }
}

/* 自定义深色模式类 */
.dark .toc-desktop,
.dark .toc-desktop-toggle,
.toc-desktop.dark-theme,
.toc-desktop-toggle.dark-theme {
    --sidebar-bg: #1a202c;
    --sidebar-header-bg: #2d3748;
    --sidebar-hover: #2d3748;
    --sidebar-active: #2d3748;
    --sidebar-text: #a0aec0;
    --border-color: #4a5568;
    --text-color: #e2e8f0;
    --text-light: #a0aec0;
    --primary-color: #68d391;
    --bg-hover: #2d3748;
}

/* data-theme="dark" 支持 */
[data-theme="dark"] .toc-desktop,
[data-theme="dark"] .toc-desktop-toggle {
    --sidebar-bg: #1a202c;
    --sidebar-header-bg: #2d3748;
    --sidebar-hover: #2d3748;
    --sidebar-active: #2d3748;
    --sidebar-text: #a0aec0;
    --border-color: #4a5568;
    --text-color: #e2e8f0;
    --text-light: #a0aec0;
    --primary-color: #68d391;
    --bg-hover: #2d3748;
}

/* 动画效果 */
.toc-desktop-link {
    position: relative;
    overflow: hidden;
}

.toc-desktop-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: var(--primary-color, #3eaf7c);
    opacity: 0.1;
    transition: width 0.3s ease;
}

.toc-desktop-link:hover::before,
.toc-desktop-link.active::before {
    width: 100%;
}

/* 空状态 */
.toc-desktop-empty {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--text-light, #64748b);
    font-size: 0.875rem;
}

/* 加载状态 */
.toc-desktop-loading {
    padding: 1rem;
    text-align: center;
}

.toc-desktop-loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color, #e2e8f0);
    border-top-color: var(--primary-color, #3eaf7c);
    border-radius: 50%;
    animation: toc-spin 1s linear infinite;
}

@keyframes toc-spin {
    to {
        transform: rotate(360deg);
    }
}