/* OneChat 文档教程页 — 与 styles.css 变量一致 */
.doc-page {
    padding-top: 88px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.doc-shell {
    flex: 1;
    display: flex;
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px 48px;
    gap: 28px;
    align-items: flex-start;
}

.doc-sidebar-wrap {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 100px);
    overflow: auto;
    padding: 20px 0 24px;
}

.doc-sidebar {
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 16px 12px;
}

.doc-sidebar-title {
    font-family: 'Poppins', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    padding: 8px 12px 12px;
}

.doc-nav-group {
    margin-bottom: 4px;
}

.doc-nav-group > button.doc-nav-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 12px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-family: 'Open Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-heading);
    cursor: pointer;
    text-align: left;
    transition: background 0.2s, color 0.2s;
}

.doc-nav-group > button.doc-nav-toggle:hover {
    background: rgba(8, 145, 178, 0.08);
    color: var(--primary-dark);
}

.doc-nav-group > button.doc-nav-toggle .fa-chevron-down {
    font-size: 0.65rem;
    opacity: 0.7;
    transition: transform 0.25s;
}

.doc-nav-group.is-open > button.doc-nav-toggle .fa-chevron-down {
    transform: rotate(180deg);
}

.doc-nav-children {
    list-style: none;
    padding: 4px 0 8px 4px;
}

.doc-nav-children a {
    display: block;
    padding: 8px 12px 8px 28px;
    font-size: 0.9rem;
    color: var(--text-body);
    text-decoration: none;
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.doc-nav-children a:hover {
    background: rgba(8, 145, 178, 0.06);
    color: var(--primary);
}

.doc-nav-children a.active {
    background: rgba(8, 145, 178, 0.1);
    color: var(--primary-dark);
    border-left-color: var(--primary);
    font-weight: 600;
}

.doc-main {
    flex: 1;
    min-width: 0;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px 48px 56px;
}

.doc-breadcrumb {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.doc-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.doc-breadcrumb a:hover {
    text-decoration: underline;
}

.doc-article h1 {
    font-size: 1.85rem;
    margin-bottom: 12px;
    line-height: 1.25;
}

.doc-lead {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.65;
}

.doc-article h2 {
    font-size: 1.35rem;
    margin: 40px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

.doc-article h2:first-of-type {
    margin-top: 0;
}

.doc-article h3 {
    font-size: 1.1rem;
    margin: 28px 0 12px;
}

.doc-article p,
.doc-article li {
    font-size: 0.95rem;
    line-height: 1.75;
}

.doc-article p {
    margin-bottom: 14px;
}

.doc-article ul,
.doc-article ol {
    margin: 12px 0 16px 1.25rem;
}

.doc-article li {
    margin-bottom: 8px;
}

.doc-steps {
    counter-reset: step;
    list-style: none;
    margin: 16px 0 24px !important;
    padding: 0;
}

.doc-steps li {
    position: relative;
    padding-left: 48px;
    margin-bottom: 20px !important;
    min-height: 36px;
}

.doc-steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(8, 145, 178, 0.3);
}

.doc-callout {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-section-alt);
    border: 1px solid var(--border-light);
    margin: 20px 0;
}

.doc-callout i {
    color: var(--primary);
    margin-top: 2px;
}

.doc-callout strong {
    color: var(--text-heading);
}

.doc-table-wrap {
    overflow-x: auto;
    margin: 16px 0 24px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.doc-table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.doc-table-wrap th,
.doc-table-wrap td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.doc-table-wrap th {
    background: rgba(8, 145, 178, 0.06);
    font-weight: 600;
    color: var(--text-heading);
}

.doc-table-wrap tr:last-child td {
    border-bottom: none;
}

.doc-mobile-toc {
    display: none;
    margin-bottom: 20px;
}

.doc-mobile-toc select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    background: var(--bg-body);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-body);
}

/* 右侧文章大纲 */
.doc-toc-wrap {
    width: 220px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 100px);
    overflow: auto;
    padding: 20px 0 24px;
}

.doc-toc {
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 14px 12px;
}

.doc-toc-title {
    font-family: 'Poppins', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    padding: 4px 8px 10px;
}

.doc-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-toc-list li {
    margin: 0;
}

.doc-toc-list a {
    display: block;
    padding: 5px 8px;
    font-size: 0.82rem;
    line-height: 1.45;
    color: var(--text-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.doc-toc-list a:hover {
    color: var(--primary);
    background: rgba(8, 145, 178, 0.04);
}

.doc-toc-list a.active {
    color: var(--primary-dark);
    border-left-color: var(--primary);
    font-weight: 600;
    background: rgba(8, 145, 178, 0.06);
}

.doc-toc-list .toc-h3 {
    padding-left: 20px;
    font-size: 0.78rem;
}

/* 上下页导航 */
.doc-page-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.doc-page-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    background: var(--bg-body);
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.doc-page-nav-btn:hover {
    background: rgba(8, 145, 178, 0.06);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.doc-page-nav-btn i {
    font-size: 0.75rem;
}

/* 左侧导航图标 */
.doc-nav-toggle .fas:not(.fa-chevron-down) {
    margin-right: 6px;
    font-size: 0.85rem;
    color: var(--primary);
    opacity: 0.7;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 1280px) {
    .doc-toc-wrap {
        display: none;
    }
}

/* 加载状态 */
.doc-loading {
    text-align: center;
    padding: 64px 0;
    color: var(--text-muted);
    font-size: 1rem;
}

.doc-loading i {
    margin-right: 8px;
    color: var(--primary);
}

/* Markdown 渲染兼容 — blockquote 已映射为 doc-callout */
.doc-article blockquote {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-section-alt);
    border: 1px solid var(--border-light);
    margin: 20px 0;
    border-left: none;
}

.doc-article code {
    background: rgba(8, 145, 178, 0.08);
    color: var(--primary-dark);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: 'Consolas', 'Monaco', monospace;
}

.doc-article pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 16px 0 24px;
    line-height: 1.6;
}

.doc-article pre code {
    background: none;
    color: inherit;
    padding: 0;
    border-radius: 0;
    font-size: 0.88rem;
}

.doc-article a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.doc-article a:hover {
    border-bottom-color: var(--primary);
}

.doc-article img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.doc-article hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: 32px 0;
}

@media (max-width: 1024px) {
    .doc-shell {
        flex-direction: column;
    }

    .doc-sidebar-wrap {
        display: none;
    }

    .doc-mobile-toc {
        display: block;
    }

    .doc-main {
        padding: 28px 20px 40px;
    }
}