/* ============================================================
   DeepVideo Manual — Layout & Components
   ============================================================ */

/* === Manual Layout === */
.manual-layout {
    display: flex;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* === Sidebar === */
.manual-sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
}

.manual-sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border-primary);
}

.manual-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.manual-brand-icon {
    width: 32px;
    height: 32px;
    background: var(--brand-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

/* 左上角换成真正的应用图标（2026-10-12 前是个写着 "D" 的渐变方块）：
   尺寸沿用上面，但不要那层渐变底与圆角——图标自带形状与留白。 */
img.manual-brand-icon {
    background: none;
    border-radius: 0;
    object-fit: contain;
}

.manual-brand-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
}

.manual-brand-sub {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
}

.manual-sidebar-tools {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-primary);
}

/* 语言快捷切换：2026-10-12 从左侧栏挪到内容区右上角（快捷切换的惯例位置）。
   注意侧栏在 ≤900px 会整块隐藏，放这儿也顺手让手机端仍能切语言。 */
.manual-topbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin: 0 0 8px;
}

.manual-tool-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    font-family: var(--font);
    text-decoration: none;
    transition: all 0.15s;
}

.manual-tool-btn:hover {
    background: var(--brand-light);
    color: var(--brand);
    border-color: var(--brand);
}

.manual-tool-btn svg {
    width: 14px;
    height: 14px;
}

/* === TOC === */
.manual-toc {
    padding: 12px 0;
    flex: 1;
}

.manual-toc-label {
    padding: 0 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.toc-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
    border-left: 3px solid transparent;
    transition: all 0.15s;
}

.toc-link:hover {
    background: var(--brand-light);
    color: var(--text-primary);
}

.toc-link.active {
    background: var(--brand-light);
    color: var(--brand);
    font-weight: 600;
    border-left-color: var(--brand);
}

.toc-num {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    flex-shrink: 0;
}

.toc-link.active .toc-num {
    background: var(--brand);
    color: white;
}

/* === Content === */
.manual-content {
    margin-left: 280px;
    flex: 1;
    padding: 40px 48px 60px;
    max-width: 900px;
    background: var(--bg-primary);
}

/* === Typography === */
.manual-content h1 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.2;
}

.manual-content h1 .chapter-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--brand);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.manual-content .chapter-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.manual-content h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-primary);
}

.manual-content h3 {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 28px;
    margin-bottom: 12px;
}

.manual-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 20px;
    margin-bottom: 8px;
}

.manual-content p {
    margin-bottom: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.manual-content ul, .manual-content ol {
    margin-bottom: 12px;
    padding-left: 24px;
    color: var(--text-secondary);
}

.manual-content li {
    margin-bottom: 6px;
    line-height: 1.6;
}

.manual-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.manual-content code:not(pre code) {
    font-family: var(--mono);
    font-size: 13px;
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    color: var(--brand-pressed);
}

.manual-content a {
    color: var(--brand);
    text-decoration: none;
}

.manual-content a:hover {
    text-decoration: underline;
}

/* === Tables === */
.manual-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 20px;
    font-size: 14px;
}

.manual-content th {
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    padding: 10px 14px;
    border-bottom: 2px solid var(--border-primary);
    background: var(--gray-50);
    font-size: 13px;
}

.manual-content td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-primary);
    color: var(--text-secondary);
}

.manual-content tr:last-child td {
    border-bottom: none;
}

/* === Screenshots === */
.screenshot {
    margin: 24px 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    break-inside: avoid;
}

.screenshot img {
    display: block;
    width: 100%;
    height: auto;
}

.screenshot figcaption {
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    font-style: italic;
}

/* === Code Blocks === */
.code-block {
    position: relative;
    margin: 16px 0 20px;
    break-inside: avoid;
}

.code-block pre {
    background: var(--gray-900);
    color: #e5e7eb;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.65;
}

.code-block code {
    font-family: var(--mono);
}

.code-block .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    font-size: 11px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-xs);
    color: #9ca3af;
    cursor: pointer;
    font-family: var(--font);
    transition: all 0.15s;
}

.code-block .copy-btn:hover {
    background: rgba(255,255,255,0.2);
    color: #e5e7eb;
}

/* === Callouts === */
.callout {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin: 20px 0;
    border-left: 4px solid;
    font-size: 14px;
    line-height: 1.6;
}

.callout-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.callout p {
    margin-bottom: 0;
}

.callout.info {
    background: var(--info-bg);
    border-color: var(--info);
    color: var(--text-primary);
}

.callout.info .callout-title {
    color: var(--info);
}

.callout.warning {
    background: var(--warning-bg);
    border-color: var(--warning);
    color: var(--text-primary);
}

.callout.warning .callout-title {
    color: var(--warning);
}

.callout.tip {
    background: var(--success-bg);
    border-color: var(--success);
    color: var(--text-primary);
}

.callout.tip .callout-title {
    color: var(--success);
}

/* === Prev/Next Navigation === */
.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-top: 32px;
    margin-top: 48px;
    border-top: 1px solid var(--border-primary);
}

.page-nav-link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 18px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    min-width: 200px;
    max-width: 45%;
    transition: all 0.15s;
}

.page-nav-link:hover {
    border-color: var(--brand);
    background: var(--brand-light);
    text-decoration: none;
}

.page-nav-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 500;
}

.page-nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--brand);
}

.page-nav-link.next {
    text-align: right;
    margin-left: auto;
}

/* === Search Overlay === */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 12vh;
}

.search-overlay.visible {
    display: flex;
}

.search-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 560px;
    max-height: 420px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-primary);
    gap: 10px;
}

.search-input-wrap svg {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 16px;
    font-family: var(--font);
    background: transparent;
    color: var(--text-primary);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-kbd {
    font-size: 11px;
    padding: 3px 8px;
    background: var(--gray-100);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xs);
    color: var(--text-muted);
    font-family: var(--mono);
}

.search-results {
    overflow-y: auto;
    max-height: 340px;
    padding: 8px;
}

.search-result {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-primary);
    transition: background 0.1s;
}

.search-result:hover, .search-result.focused {
    background: var(--brand-light);
}

.search-result-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.search-result-chapter {
    font-size: 12px;
    color: var(--text-muted);
}

.search-result-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-empty {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* === Landing Page === */
.landing-hero {
    text-align: center;
    padding: 60px 20px 40px;
}

.landing-hero h1 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 12px;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.landing-hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.landing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    padding: 20px 0 60px;
}

.landing-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.landing-card:hover {
    border-color: var(--brand);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.landing-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--brand-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    font-size: 18px;
    flex-shrink: 0;
}

.landing-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    border: none;
}

.landing-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.landing-card .card-num {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Endpoint Badge === */
.endpoint {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 13px;
}

.method-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-xs);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.method-badge.get { background: var(--info-bg); color: var(--info); }
.method-badge.post { background: var(--success-bg); color: var(--success); }
.method-badge.put { background: var(--warning-bg); color: var(--warning); }
.method-badge.delete { background: var(--error-bg); color: var(--error); }

/* === Inline Endpoint === */
.inline-endpoint {
    display: block;
    padding: 12px 16px;
    background: var(--gray-900);
    border-radius: var(--radius-md);
    font-family: var(--mono);
    font-size: 13px;
    color: #e5e7eb;
    margin: 8px 0 16px;
    overflow-x: auto;
}

.inline-endpoint .method { color: #34d399; font-weight: 600; }
.inline-endpoint .path { color: #93c5fd; }
.inline-endpoint .param { color: #fbbf24; }

/* === Print Styles === */
@media print {
    .manual-sidebar,
    .manual-sidebar-header,
    .manual-sidebar-tools,
    .manual-toc,
    .page-nav,
    .search-overlay,
    .code-block .copy-btn {
        display: none !important;
    }

    .manual-content {
        margin-left: 0;
        max-width: none;
        padding: 0;
        background: white;
    }

    .manual-content h1 {
        font-size: 24pt;
        color: black;
    }

    .manual-content h2 {
        font-size: 18pt;
        color: black;
        page-break-after: avoid;
    }

    .manual-content h3 {
        font-size: 14pt;
        page-break-after: avoid;
    }

    .screenshot,
    .code-block pre,
    .callout,
    table {
        break-inside: avoid;
    }

    .screenshot img {
        max-height: 300px;
    }

    .code-block pre {
        background: #f5f5f5;
        color: #333;
        border: 1px solid #ddd;
    }

    .manual-content a {
        color: black;
    }

    .manual-content a[href]::after {
        content: " (" attr(href) ")";
        font-size: 11px;
        color: #666;
    }

    .method-badge {
        border: 1px solid #999;
        background: white;
        color: black;
    }

    @page {
        margin: 2cm;
        size: A4;
    }
}

/* === Responsive === */
@media (max-width: 900px) {
    .manual-sidebar {
        display: none;
    }
    .manual-content {
        margin-left: 0;
        padding: 24px 20px 40px;
    }
    .landing-hero h1 {
        font-size: 28px;
    }
    .page-nav {
        gap: 10px;
    }
    .page-nav-link {
        max-width: 100%;
        flex: 1;
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 12px;
        min-width: 0;
    }
    .page-nav-label {
        font-size: 11px;
    }
    .page-nav-title {
        font-size: 13px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* 窄屏目录开关：旧版在 ≤900px 时直接把侧栏隐藏掉，读者只剩底部翻页可用。
   按钮由 manual.js 动态插入，所以 8 个页面不必各写一份标记。 */
.manual-toc-toggle {
    display: none;
    position: fixed;
    left: 12px;
    top: 12px;
    z-index: 60;
    padding: 8px 14px;
    border: 1px solid var(--border, #2a2a2a);
    border-radius: 8px;
    background: var(--surface, #fff);
    color: inherit;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
}
@media (max-width: 900px) {
    .manual-toc-toggle { display: inline-block; }
    body.toc-open .manual-sidebar { display: flex; z-index: 50; box-shadow: 0 0 0 100vmax rgba(0,0,0,.35); }
    body.toc-open .manual-content { pointer-events: none; }
}

/* === 配图：界面示意图（不是截图） === */
.mfig {
    margin: 22px 0;
    padding: 16px 18px 12px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}

.mfig-art {
    display: flex;
    gap: 8px;
    align-items: stretch;
    flex-wrap: wrap;
}

.mfig-box {
    flex: 1 1 120px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 13px;
    line-height: 1.5;
}

.mfig-box strong { display: block; margin-bottom: 2px; font-size: 12px; }
.mfig-box small { display: block; color: var(--text-secondary); font-size: 12px; }
.mfig-stop { border-color: var(--warning); background: var(--warning-bg); }
.mfig-run { border-color: var(--brand); background: var(--info-bg); }
.mfig-arrow { align-self: center; color: var(--text-secondary); font-size: 14px; }

/* 窗口/画面区示意图：一个外框 + 若干标注区域 */
.mfig-frame {
    position: relative;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    height: 210px;
    overflow: hidden;
    font-size: 12px;
}

.mfig-region {
    position: absolute;
    border: 1px dashed var(--brand-300);
    border-radius: var(--radius-xs);
    padding: 4px 6px;
    color: var(--text-secondary);
    background: var(--info-bg);
}

.mfig-corner {
    position: absolute;
    right: 10px;
    bottom: 10px;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    background: rgba(0, 0, 0, 0.55);
    color: #fff;
    font-size: 12px;
}

.mfig figcaption {
    margin-top: 10px;
    font-size: 12.5px;
    color: var(--text-secondary);
}

/* === 语言菜单 ==============================================================
   与营销页**同一套标记**，两边不能各搞一套：details 上挂 data-lang-menu，里面每个语言
   一项、是带 data-lang-toggle 的 a，href 指 ?lang= 加语言码。
   展开靠 details 原生行为、每项都是真链接，关掉 JS 也切得动（这是切语言唯一的人工入口）。
   summary 显示**当前**语言，不是对侧 —— 对侧这个概念在 3+ 语言下已经不成立。
   同样故意不写尖括号标记形状，理由同上：注释会把闸门的判据喂饱。 */
.lang-menu { position: relative; display: flex; }
.lang-menu > summary { list-style: none; }
.lang-menu > summary::-webkit-details-marker { display: none; }
.lang-menu > summary::after { content: " \25BE"; font-size: 10px; opacity: .7; }
.lang-menu[open] > summary { border-color: var(--brand); color: var(--brand); }
.lang-menu-list { position: absolute; right: 0; top: calc(100% + 6px); z-index: 70;
    min-width: 150px; margin: 0; padding: 5px; display: flex; flex-direction: column;
    background: var(--bg-primary); border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm); box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.lang-menu-item { display: block; padding: 7px 12px; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-family: var(--font); font-size: 13px;
    text-decoration: none; white-space: nowrap; }
.lang-menu-item:hover { background: var(--brand-light); color: var(--brand); }
.lang-menu-item[aria-current] { color: var(--brand); font-weight: 600; }