/*
 * NexoFlow KMS - Knowledge Base Styles
 * v2: CSS variable system + focus-visible (2026-08-17)
 * Brand-aligned: primary #2563EB, Inter font, 8px radius.
 */

.nexoflow-kms-docs {
    --nf-primary: var(--nfx-brand-color, #2563EB);
    --nf-text: #0F172A;
    --nf-text-heading: #0F172A;
    --nf-text-body: #475569;
    --nf-text-muted: #64748B;
    /* 2026-10-18 UI 审查：原 #94A3B8 压白仅 2.56:1（12px meta/占位文字远低于 AA 4.5:1）。
       「更浅一档」在 AA 下无解（白底可过 AA 的最浅灰约 #66788C），故收敛到 muted 同值，
       以可读性优先——层级差异交由字号/字重表达。 */
    --nf-text-faint: #64748B;
    --nf-border: rgba(14,35,80,.10);
    --nf-border-input: rgba(14,35,80,.14);
    --nf-surface: #FFFFFF;
    --nf-surface-2: #F8FAFC;
    --nf-surface-3: #F1F5F9;
    --nf-code-bg: #1E293B;
    --nf-code-text: #F8FAFC;
    --nf-danger: #cf202f;
    --nfx-radius: 6px;
    --nfx-radius-sm: 6px;
    --nfx-radius-xs: 4px;
    --nfx-radius-lg: 12px;
    --nf-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    --nf-transition: 0.15s ease;
    /* 白标派生量：focus 光晕 / 品牌渐变 / 淡底，全部引用 --nf-primary（= --nfx-brand-color），
       不出现硬编码 rgba(37,99,235,*) —— 否则白标切换主色时描边不跟随。 */
    --nf-grad: linear-gradient(135deg, var(--nf-primary) 0%, color-mix(in srgb, var(--nf-primary) 65%, #000) 100%);
    --nf-focus-ring: 0 0 0 3px rgba(37, 99, 235, 0.15); /* 旧浏览器回退 */
    --nf-focus-ring: 0 0 0 3px color-mix(in srgb, var(--nf-primary) 15%, transparent);
    --nf-soft-fill: color-mix(in srgb, var(--nf-primary) 8%, transparent);

    font-family: var(--nf-font);
    line-height: 1.6;
    color: var(--nf-text);
    -webkit-font-smoothing: antialiased;
}

.nexoflow-kms-tree {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nexoflow-kms-tree-item {
    margin: 4px 0;
}

.nexoflow-kms-tree-node {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border-radius: var(--nfx-radius-sm);
    transition: background var(--nf-transition);
}

.nexoflow-kms-tree-node:hover {
    background: var(--nf-surface-3);
}

.nexoflow-kms-tree-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 10px;
    color: var(--nf-text-muted);
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
    padding: 0;
}

.nexoflow-kms-tree-toggle[aria-expanded="true"] {
    transform: rotate(90deg);
}

.nexoflow-kms-tree-placeholder {
    width: 16px;
    display: inline-block;
}

.nexoflow-kms-tree-link {
    color: var(--nf-primary);
    text-decoration: none;
    font-size: 14px;
    flex: 1;
}

.nexoflow-kms-tree-link:hover {
    text-decoration: underline;
}

.nexoflow-kms-tree .nexoflow-kms-tree {
    padding-left: 20px;
    display: none;
}

.nexoflow-kms-tree .nexoflow-kms-tree.open {
    display: block;
}

.nexoflow-kms-empty {
    color: var(--nf-text-muted);
    font-size: 14px;
    padding: 12px 0;
}

.nexoflow-kms-error {
    color: var(--nf-danger);
    font-size: 14px;
    padding: 8px 0;
}

.nexoflow-kms-doc-single {
    max-width: 800px;
}

.nexoflow-kms-doc-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: var(--nf-text-heading);
}

.nexoflow-kms-doc-content {
    font-size: 15px;
    line-height: 1.8;
    color: var(--nf-text-body);
}

.nexoflow-kms-doc-content h1,
.nexoflow-kms-doc-content h2,
.nexoflow-kms-doc-content h3 {
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--nf-text-heading);
}

.nexoflow-kms-doc-content p {
    margin: 0 0 16px 0;
}

.nexoflow-kms-doc-content ul,
.nexoflow-kms-doc-content ol {
    margin: 0 0 16px 0;
    padding-left: 24px;
}

.nexoflow-kms-doc-content a {
    color: var(--nf-primary);
}

.nexoflow-kms-doc-content img {
    max-width: 100%;
    height: auto;
}

.nexoflow-kms-doc-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.nexoflow-kms-doc-content th,
.nexoflow-kms-doc-content td {
    border: 1px solid var(--nf-border);
    padding: 8px 12px;
    text-align: left;
}

.nexoflow-kms-doc-content th {
    background: var(--nf-surface-2);
    font-weight: 600;
}

.nexoflow-kms-doc-content code {
    background: var(--nf-surface-3);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
}

.nexoflow-kms-doc-content pre {
    background: var(--nf-code-bg);
    color: var(--nf-code-text);
    padding: 16px;
    border-radius: var(--nfx-radius-sm);
    overflow-x: auto;
    margin: 16px 0;
}

.nexoflow-kms-doc-content blockquote {
    border-left: 4px solid var(--nf-primary);
    padding-left: 16px;
    margin: 16px 0;
    color: var(--nf-text-body);
}

.nexoflow-kms-search {
    max-width: 600px;
}

.nexoflow-kms-search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--nf-border-input);
    border-radius: var(--nfx-radius);
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
    transition: border-color var(--nf-transition);
}

.nexoflow-kms-search-input:focus {
    border-color: var(--nf-primary);
    box-shadow: var(--nf-focus-ring);
}

.nexoflow-kms-search-results {
    margin-top: 12px;
}

.nexoflow-kms-search-item {
    padding: 12px 14px;
    border: 1px solid var(--nf-border);
    border-radius: var(--nfx-radius-lg);
    margin-bottom: 8px;
    background: var(--nf-surface);
}

.nexoflow-kms-search-item-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--nf-primary);
    margin-bottom: 4px;
}

.nexoflow-kms-search-item-title a {
    color: inherit;
    text-decoration: none;
}

.nexoflow-kms-search-item-title a:hover {
    text-decoration: underline;
}

.nexoflow-kms-search-item-excerpt {
    font-size: 13px;
    color: var(--nf-text-body);
    line-height: 1.5;
}

.nexoflow-kms-search-item-meta {
    font-size: 12px;
    color: var(--nf-text-faint);
    margin-top: 4px;
}

.nexoflow-kms-search-more {
    text-align: center;
    padding: 12px;
}

.nexoflow-kms-search-more a {
    color: var(--nf-primary);
    text-decoration: none;
    font-size: 14px;
}

.nexoflow-kms-search-more a:hover {
    text-decoration: underline;
}

.nexoflow-kms-loading {
    color: var(--nf-text-muted);
    font-size: 13px;
    padding: 8px 0;
}

.nexoflow-kms-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nexoflow-kms-list-item {
    padding: 12px 14px;
    border: 1px solid var(--nf-border);
    border-radius: var(--nfx-radius-lg);
    margin-bottom: 8px;
    background: var(--nf-surface);
    transition: border-color var(--nf-transition);
}

.nexoflow-kms-list-item:hover {
    border-color: var(--nf-primary);
}

.nexoflow-kms-list-link {
    color: var(--nf-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.nexoflow-kms-list-link:hover {
    text-decoration: underline;
}

.nexoflow-kms-list-excerpt {
    font-size: 13px;
    color: var(--nf-text-body);
    line-height: 1.5;
    margin: 4px 0 0 0;
}

.nexoflow-kms-tree-doc-content {
    padding: 12px 16px;
    margin: 4px 0 8px 22px;
    border-left: 2px solid var(--nf-primary);
    background: var(--nf-surface-2);
    border-radius: 0 var(--nfx-radius-sm) var(--nfx-radius-sm) 0;
}

.nexoflow-kms-tree-link-active {
    font-weight: 600;
    color: var(--nf-primary);
}

.nexoflow-kms-vitepress {
    font-family: var(--nf-font);
    line-height: 1.6;
    color: var(--nf-text);
}

.nexoflow-kms-vp-layout {
    display: flex;
    gap: 24px;
    min-height: 400px;
}

.nexoflow-kms-vp-sidebar {
    width: 260px;
    min-width: 220px;
    border-right: 1px solid var(--nf-border);
    padding-right: 20px;
    overflow-y: auto;
    max-height: 80vh;
    position: sticky;
    top: 20px;
}

.nexoflow-kms-vp-sidebar .nexoflow-kms-search {
    max-width: 100%;
    margin-bottom: 16px;
}

.nexoflow-kms-vp-nav-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--nf-text-muted);

    letter-spacing: 0.05em;
    margin: 12px 0 6px;
    padding: 0 8px;
}

.nexoflow-kms-vp-tree-nav .nexoflow-kms-tree {
    display: block;
}

.nexoflow-kms-vp-content {
    flex: 1;
    min-width: 0;
}

.nexoflow-kms-vp-doc-area {
    max-width: 800px;
}

.nexoflow-kms-vp-placeholder {
    color: var(--nf-text-faint);
    font-size: 15px;
    padding: 60px 20px;
    text-align: center;
}

.nexoflow-kms-cards {
    font-family: var(--nf-font);
    line-height: 1.6;
    color: var(--nf-text);
}

.nexoflow-kms-cards-search {
    margin-bottom: 20px;
}

.nexoflow-kms-cards-search .nexoflow-kms-search {
    max-width: 100%;
}

.nexoflow-kms-cards-categories {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.nexoflow-kms-cards-cat-btn {
    background: var(--nf-surface-3);
    border: 1px solid var(--nf-border-input);
    border-radius: var(--nfx-radius, 6px);
    padding: 9px 16px;
    font-size: 13px;
    cursor: pointer;
    color: var(--nf-text-body);
    transition: all var(--nf-transition);
}

.nexoflow-kms-cards-cat-btn:hover,
.nexoflow-kms-cards-cat-btn.active {
    background: var(--nf-primary);
    color: var(--nfx-bg-surface,#fff);
    border-color: var(--nf-primary);
}

.nexoflow-kms-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.nexoflow-kms-card {
    border: 1px solid var(--nf-border);
    border-radius: 10px;
    padding: 16px 18px;
    background: var(--nf-surface);
    transition: border-color var(--nf-transition), box-shadow var(--nf-transition);
}

.nexoflow-kms-card:hover {
    border-color: var(--nf-primary);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--nf-primary) 10%, transparent);
}

.nexoflow-kms-card-title {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 8px;
}

.nexoflow-kms-card-title a {
    color: var(--nf-primary);
    text-decoration: none;
}

.nexoflow-kms-card-title a:hover {
    text-decoration: underline;
}

.nexoflow-kms-card-excerpt {
    font-size: 13px;
    color: var(--nf-text-body);
    line-height: 1.5;
    margin: 0 0 8px;
}

.nexoflow-kms-card-category {
    font-size: 11px;
    color: var(--nf-text-muted);
    background: var(--nf-surface-3);
    padding: 2px 8px;
    border-radius: var(--nfx-radius-xs);
}

/* Focus visibility - keyboard accessibility (A-4) */
:where(.nexoflow-kms-docs a, .nexoflow-kms-docs button, .nexoflow-kms-docs input, .nexoflow-kms-docs select, .nexoflow-kms-docs textarea, .nexoflow-kms-docs [tabindex]:not([tabindex="-1"]),
.nexoflow-kms-vitepress a, .nexoflow-kms-vitepress button, .nexoflow-kms-vitepress input, .nexoflow-kms-vitepress [tabindex]:not([tabindex="-1"]),
.nexoflow-kms-cards a, .nexoflow-kms-cards button, .nexoflow-kms-cards input, .nexoflow-kms-cards [tabindex]:not([tabindex="-1"])):focus-visible {
    outline: 2px solid transparent;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--nf-primary) 30%, transparent);
    border-radius: var(--nfx-radius-sm);
}

@media (max-width: 768px) {
    .nexoflow-kms-vp-layout {
        flex-direction: column;
    }
    .nexoflow-kms-vp-sidebar {
        width: 100%;
        min-width: 0;
        border-right: none;
        border-bottom: 1px solid var(--nf-border);
        padding-right: 0;
        padding-bottom: 16px;
        max-height: none;
        position: static;
    }
    .nexoflow-kms-cards-grid {
        grid-template-columns: 1fr;
    }
    .nexoflow-kms-doc-title {
        font-size: 20px;
    }
    .nexoflow-kms-doc-content {
        font-size: 14px;
    }
    .nexoflow-kms-search-input {
        font-size: 16px;
    }
}

/* ============================================================
   单文档正文阶梯（对齐 .doc-body 口径）+ hero / 进度条 / 上下篇
   白标：全部引用 --nf-primary / --nf-soft-fill，无硬编码品牌色。
   ============================================================ */
.nexoflow-kms-doc-single {
    max-width: 800px;
}
.nexoflow-kms-doc-content {
    max-width: 680px;
    font-size: 15px;
    line-height: 1.85;
    color: var(--nf-text-body);
}
.nexoflow-kms-doc-content h2 {
    margin: 32px 0 0;
    padding-left: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--nf-text-heading);
    border-left: 3px solid transparent;
    border-image: linear-gradient(180deg, var(--nf-primary), color-mix(in srgb, var(--nf-primary) 55%, #fff)) 1;
}
.nexoflow-kms-doc-content h3 {
    margin: 26px 0 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--nf-text-heading);
}
.nexoflow-kms-doc-content h3::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 2px;
    background: var(--nf-primary);
    margin-right: 8px;
    vertical-align: 2px;
}
.nexoflow-kms-doc-content h4 {
    margin: 20px 0 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--nf-text-heading);
}
.nexoflow-kms-doc-content a {
    color: var(--nf-primary);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in srgb, var(--nf-primary) 35%, transparent);
    transition: border-color var(--nf-transition);
}
.nexoflow-kms-doc-content a:hover {
    border-bottom-color: var(--nf-primary);
}
.nexoflow-kms-doc-content blockquote {
    margin: 16px 0;
    padding: 14px 18px;
    border-left: 3px solid transparent;
    border-image: linear-gradient(180deg, var(--nf-primary), color-mix(in srgb, var(--nf-primary) 55%, #fff)) 1;
    background: var(--nf-soft-fill);
    border-radius: 0 var(--nfx-radius-sm) var(--nfx-radius-sm) 0;
    color: var(--nf-text-body);
}
.nexoflow-kms-doc-content :not(pre) > code {
    background: var(--nf-soft-fill);
    color: var(--nf-primary);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 13px;
    font-family: "JetBrains Mono", ui-monospace, Consolas, monospace;
}
.nexoflow-kms-doc-content tbody tr:nth-child(even) {
    background: color-mix(in srgb, var(--nf-primary) 3%, transparent);
}
.nexoflow-kms-doc-content tbody tr {
    transition: background var(--nf-transition);
}
.nexoflow-kms-doc-content tbody tr:hover {
    background: color-mix(in srgb, var(--nf-primary) 6%, transparent);
}

/* 阅读进度条 */
.nexoflow-kms-doc-progress {
    position: sticky;
    top: 0;
    z-index: 50;
    height: 3px;
    background: transparent;
}
.nexoflow-kms-doc-progress i {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--nf-primary), color-mix(in srgb, var(--nf-primary) 55%, #fff));
}

/* 单文档 hero */
.nexoflow-kms-doc-hero {
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
    padding: 24px 28px;
    border: 1px solid var(--nf-border);
    border-radius: var(--nfx-radius-lg);
    background: var(--nf-soft-fill);
}
.nexoflow-kms-doc-crumb {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--nf-text-muted);
}
.nexoflow-kms-doc-crumb a {
    color: var(--nf-text-muted);
    text-decoration: none;
}
.nexoflow-kms-doc-crumb a:hover {
    color: var(--nf-primary);
}
.nexoflow-kms-doc-crumb b {
    color: var(--nf-text-heading);
    font-weight: 600;
}
.nexoflow-kms-doc-hero h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.4px;
    line-height: 1.35;
    color: var(--nf-text-heading);
}
.nexoflow-kms-doc-hero .meta {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--nf-text-body);
}
.nexoflow-kms-doc-hero .tag-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.nexoflow-kms-doc-hero .tag-row span {
    padding: 3px 10px;
    border: 1px solid color-mix(in srgb, var(--nf-primary) 20%, transparent);
    border-radius: 4px;
    background: var(--nf-soft-fill);
    color: var(--nf-primary);
    font-size: 11px;
    font-weight: 500;
}

/* 上下篇 pager */
.nexoflow-kms-doc-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}
.nexoflow-kms-pager-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    border: 1px solid var(--nf-border);
    border-radius: var(--nfx-radius-lg);
    background: var(--nf-surface);
    cursor: pointer;
    text-decoration: none;
    transition: border-color var(--nf-transition), box-shadow var(--nf-transition);
}
.nexoflow-kms-pager-card:hover {
    border-color: color-mix(in srgb, var(--nf-primary) 40%, var(--nf-border));
    box-shadow: 0 2px 8px color-mix(in srgb, var(--nf-primary) 8%, transparent);
}
.nexoflow-kms-pager-card .pk {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--nf-text-faint);
}
.nexoflow-kms-pager-card .pt {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--nf-text-heading);
}
.nexoflow-kms-pager-card:hover .pt {
    color: var(--nf-primary);
}
.nexoflow-kms-pager-card.next {
    text-align: right;
}
@media (max-width: 680px) {
    .nexoflow-kms-doc-pager {
        grid-template-columns: 1fr;
    }
}

/* 动效守护 */
@media (prefers-reduced-motion: reduce) {
    .nexoflow-kms-doc-progress i,
    .nexoflow-kms-pager-card,
    .nexoflow-kms-card {
        transition: none;
    }
}

/* ---- 内容反馈按钮（feedback-component.js：.msg-feedback/.fb-btn/.fb-reasons/.fb-thanks）----
   2026-10-18 UI 审查：此前 KMS 前台无任何 .fb-btn 样式，Yes/No/原因按钮回落浏览器
   原生形态（≈19px 高、无圆角、无品牌色），与插件设计系统完全割裂。此处按自有 token 补齐，
   44px 触摸目标 + 6px 圆角（四端统一口径），focus 环跟随品牌色。
   挂载点：.nexoflow-kms-single-doc > .nexoflow-kms-doc-content（kms.js:29-55），
   位于短代码根 .nexoflow-kms-docs 内，故以其为作用域。 */
.nexoflow-kms-docs .msg-feedback {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--nf-border);
}
.nexoflow-kms-docs .fb-label {
    font-size: 13px;
    color: var(--nf-text-muted);
}
.nexoflow-kms-docs .fb-btn {
    min-height: 44px;
    padding: 0 16px;
    background: var(--nf-surface);
    border: 1px solid var(--nf-border);
    border-radius: var(--nfx-radius-sm);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--nf-font);
    color: var(--nf-text);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.nexoflow-kms-docs .fb-btn:hover {
    border-color: var(--nf-primary);
    color: var(--nf-primary);
    background: var(--nf-surface-3);
}
.nexoflow-kms-docs .fb-btn:focus-visible {
    outline: none;
    box-shadow: var(--nf-focus-ring);
}
.nexoflow-kms-docs .fb-reasons {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
}
.nexoflow-kms-docs .fb-thanks {
    font-size: 13px;
    font-weight: 500;
    color: var(--nf-primary);
}
.nexoflow-related-link {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--nf-border, #e2e8f0);
}
.nexoflow-related-link a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 500;
    color: var(--nf-primary);
    text-decoration: none;
}
.nexoflow-related-link a:hover {
    text-decoration: underline;
}