/* Public document pages — shared layout + Markdown typography.
   Dark theme, zero dependencies. Loaded by /docs* pages. */

:root {
    --bg: #0f1115;
    --card: #1a1e26;
    --card-2: #14171e;
    --border: #2a303a;
    --text: #e6e8eb;
    --muted: #9aa3ad;
    --accent: #4f8cff;
    --accent-dim: #2b4a7a;
    --code-bg: #0b0d12;
    --kw: #ff7b72;      /* keyword */
    --str: #a5d6ff;     /* string */
    --num: #79c0ff;     /* number */
    --com: #8b949e;     /* comment */
    --op: #ffa657;      /* operator */
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.75 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
          'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.doc-wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 32px 20px 80px;
}
/* Document view pages (md/txt/html/pdf) get a much wider column. The left
   sidebar still reserves 250px; the content fills the remaining space. */
.doc-wrap-wide {
    max-width: 1400px;
}

/* --- Header --- */
.doc-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
/* "Back to list" sits at the far right of the top nav */
.btn-back { margin-left: auto; }
.btn-home { margin-left: 12px; }
.doc-logo { font-size: 26px; }
.doc-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}
.doc-brand:hover { color: var(--accent); }
.doc-muted { color: var(--muted); font-size: 13px; }

/* --- Card / meta / actions --- */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    margin-top: 20px;
}
.card h1 { margin: 0 0 6px; font-size: 28px; line-height: 1.3; }
.doc-meta {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 20px;
}
.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 9px 16px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s;
}
.btn:hover { background: #3a7bf0; }
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: transparent; }
.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0; }

/* Public revision-history page */
.ver-link {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dashed var(--accent);
}
.ver-link:hover { color: #3a7bf0; }
.ver-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}
.ver-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg, #1e2433);
}
.ver-badge {
    flex: 0 0 auto;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 999px;
}
.ver-main { flex: 1; min-width: 0; }
.ver-title {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ver-sub {
    color: var(--muted, #8a93a8);
    font-size: 12px;
    margin-top: 2px;
}
.ver-cur-tag {
    display: inline-block;
    color: var(--success, #10b981);
    font-size: 11px;
    border: 1px solid currentColor;
    border-radius: 999px;
    padding: 0 7px;
    vertical-align: 1px;
}

/* Download button after the document body — centered, roomy */
.doc-actions {
    margin: 32px 0 6px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
}
.doc-actions .btn {
    font-size: 15px;
    padding: 11px 32px;
}

.tag {
    display: inline-block;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2px 10px;
    font-size: 12px;
    color: var(--muted);
    margin-right: 6px;
}

/* --- Archive list (public index page) --- */
.archive { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; }
.doc-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    text-decoration: none;
    color: var(--text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    transition: border-color .15s, transform .1s;
}
.doc-item:hover { border-color: var(--accent); transform: translateY(-1px); }
.doc-item-title { font-size: 16px; font-weight: 600; }
.doc-item-meta { color: var(--muted); font-size: 12.5px; margin-top: 3px; }
.doc-item-badge {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px 8px;
    font-size: 11.5px;
    color: var(--muted);
    white-space: nowrap;
}
.empty { color: var(--muted); text-align: center; padding: 40px 0; }

.viewer {
    width: 100%;
    height: 78vh;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-top: 16px;
}

.footer { color: var(--muted); font-size: 12px; text-align: center; margin-top: 48px; }

/* ============ Markdown body typography ============ */
.doc-body {
    line-height: 1.8;
    font-size: 15.5px;
    overflow-wrap: break-word;
}

.doc-body > :first-child { margin-top: 0; }

.doc-body h1, .doc-body h2, .doc-body h3,
.doc-body h4, .doc-body h5, .doc-body h6 {
    margin: 1.6em 0 0.6em;
    line-height: 1.35;
    font-weight: 650;
    color: #f2f4f7;
    scroll-margin-top: 16px;
}
.doc-body h1 { font-size: 1.75em; padding-bottom: .3em; border-bottom: 1px solid var(--border); }
.doc-body h2 { font-size: 1.4em; padding-bottom: .25em; border-bottom: 1px solid var(--border); }
.doc-body h3 { font-size: 1.18em; }
.doc-body h4 { font-size: 1.05em; }
.doc-body p { margin: 0.8em 0; }
.doc-body a { color: var(--accent); text-decoration: none; }
.doc-body a:hover { text-decoration: underline; }
.doc-body del { color: var(--muted); }

.doc-body ul, .doc-body ol {
    margin: 0.6em 0;
    padding-left: 1.7em;
}
.doc-body li { margin: 0.25em 0; }
.doc-body li > ul, .doc-body li > ol { margin: 0.2em 0; }
/* Task lists (pymdownx.tasklist) */
.doc-body .task-list { list-style: none; padding-left: 0.2em; }
.doc-body .task-list-item { display: flex; align-items: flex-start; gap: 8px; }
.doc-body .task-list-control {
    display: inline-flex;
    margin-top: 0.42em;
    position: relative;
}
.doc-body .task-list-control input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 15px;
    height: 15px;
    border: 1.5px solid var(--muted);
    border-radius: 4px;
    background: var(--code-bg);
    cursor: default;
    margin: 0;
    flex-shrink: 0;
}
.doc-body .task-list-control input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}
.doc-body .task-list-control input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
}

.doc-body blockquote {
    border-left: 3px solid var(--accent);
    background: var(--card-2);
    margin: 1em 0;
    padding: 0.6em 1em;
    color: var(--muted);
    border-radius: 0 8px 8px 0;
}

.doc-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2em 0;
}

.doc-body img {
    max-width: 100%;
    border-radius: 8px;
    display: block;
    margin: 0.6em auto;
    box-shadow: 0 2px 12px rgba(0,0,0,.35);
}

/* Inline code */
.doc-body code {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 1px 6px;
    font-size: 0.88em;
    font-family: 'SF Mono', 'JetBrains Mono', Monaco, Consolas, 'Courier New', monospace;
    color: #e3b341;
}
.doc-body pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--text);
    font-size: 13.5px;
    line-height: 1.65;
}

/* Code blocks (Pygments .codehilite) + copy button */
.doc-body .codehilite {
    position: relative;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    overflow: auto;
    margin: 1.1em 0;
    font-size: 13.5px;
}
.doc-body .codehilite pre {
    margin: 0;
    font-family: 'SF Mono', 'JetBrains Mono', Monaco, Consolas, 'Courier New', monospace;
    line-height: 1.65;
}
.code-copy {
    position: absolute;
    top: 8px;
    right: 10px;
    background: var(--card-2);
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 3px 10px;
    font-size: 11.5px;
    cursor: pointer;
    transition: color .15s, border-color .15s;
    z-index: 2;
}
.code-copy:hover { color: var(--accent); border-color: var(--accent); }

/* Tables */
.doc-body .table-wrap { overflow-x: auto; margin: 1.1em 0; border-radius: 8px; }
.doc-body table {
    border-collapse: collapse;
    width: 100%;
    min-width: 480px;
    font-size: 14px;
}
.doc-body th, .doc-body td {
    border: 1px solid var(--border);
    padding: 9px 14px;
    text-align: left;
}
.doc-body th {
    background: var(--code-bg);
    font-weight: 600;
    color: #f2f4f7;
}
.doc-body tbody tr:nth-child(even) { background: var(--card-2); }
.doc-body tbody tr:hover { background: #1f242e; }

/* ============ Two-column layout: sidebar TOC (left) + content ============ */
.doc-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
    margin-top: 20px;
}
.doc-sidebar {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}
.doc-sidebar::-webkit-scrollbar { width: 6px; }
.doc-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.doc-main { min-width: 0; }
.doc-main .card { margin-top: 0; }

/* Sidebar table of contents (generated by Python-Markdown toc extension) */
.toc-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 10px;
    font-size: 13.5px;
}
.toc-card::before {
    content: "📑 目录";
    display: block;
    font-weight: 600;
    color: var(--text);
    padding: 0 8px 8px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 10px;
}
.toc-card .toc { margin: 0; padding: 0; background: none; border: none; }
.toc-card ul { list-style: none; margin: 0; padding-left: 0; }
.toc-card ul ul { padding-left: 1.1em; }
.toc-card li { margin: 1px 0; }
.toc-card a {
    color: var(--muted);
    text-decoration: none;
    display: block;
    padding: 4px 8px;
    border-radius: 6px;
    border-left: 2px solid transparent;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color .12s, border-color .12s, background .12s;
}
.toc-card a:hover {
    color: var(--accent);
    background: var(--card-2);
    border-left-color: var(--accent);
}

/* Active heading highlight in sidebar (toggled by docs.js) */
.toc-card a.active {
    color: var(--accent);
    background: var(--card-2);
    border-left-color: var(--accent);
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.82);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    cursor: zoom-out;
    padding: 20px;
}
.lightbox.open { display: flex; }
.lightbox img {
    max-width: 100%;
    max-height: 92vh;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0,0,0,.6);
}

/* Print */
@media print {
    body { background: #fff; color: #000; }
    .doc-head, .doc-sidebar, .actions, .code-copy, .footer, .lightbox { display: none !important; }
    .doc-layout { display: block; }
    .card { border: none; padding: 0; }
    .doc-body .codehilite { background: #f6f8fa; border: 1px solid #d0d7de; }
    .doc-body th { background: #f6f8fa; }
    .doc-body tbody tr:nth-child(even) { background: #fafbfc; }
    .doc-body a { color: #000; }
}

/* Responsive: sidebar collapses to a collapsible top block on small screens */
@media (max-width: 900px) {
    .doc-layout { grid-template-columns: 1fr; gap: 0; }
    .doc-sidebar {
        position: static;
        max-height: 200px;
        overflow-y: auto;
        margin: 0 0 16px;
    }
}
@media (max-width: 640px) {
    .card { padding: 20px; }
    .doc-body { font-size: 15px; }
    .doc-wrap { padding: 20px 14px 60px; }
    .doc-body .codehilite { padding: 12px; }
}

/* ============ Pygments (Monokai) syntax theme ============ */
.doc-body .codehilite pre { line-height: 1.65; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.doc-body .codehilite .hll { background-color: #49483e }
.doc-body .codehilite { background: #272822; color: #F8F8F2 }
.doc-body .codehilite .c { color: #959077 } /* Comment */
.doc-body .codehilite .err { color: #ED007E; background-color: #1E0010 } /* Error */
.doc-body .codehilite .esc { color: #F8F8F2 } /* Escape */
.doc-body .codehilite .g { color: #F8F8F2 } /* Generic */
.doc-body .codehilite .k { color: #66D9EF } /* Keyword */
.doc-body .codehilite .l { color: #AE81FF } /* Literal */
.doc-body .codehilite .n { color: #F8F8F2 } /* Name */
.doc-body .codehilite .o { color: #FF4689 } /* Operator */
.doc-body .codehilite .x { color: #F8F8F2 } /* Other */
.doc-body .codehilite .p { color: #F8F8F2 } /* Punctuation */
.doc-body .codehilite .ch { color: #959077 } /* Comment.Hashbang */
.doc-body .codehilite .cm { color: #959077 } /* Comment.Multiline */
.doc-body .codehilite .cp { color: #959077 } /* Comment.Preproc */
.doc-body .codehilite .cpf { color: #959077 } /* Comment.PreprocFile */
.doc-body .codehilite .c1 { color: #959077 } /* Comment.Single */
.doc-body .codehilite .cs { color: #959077 } /* Comment.Special */
.doc-body .codehilite .gd { color: #FF4689 } /* Generic.Deleted */
.doc-body .codehilite .ge { color: #F8F8F2; font-style: italic } /* Generic.Emph */
.doc-body .codehilite .ges { color: #F8F8F2; font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.doc-body .codehilite .gr { color: #F8F8F2 } /* Generic.Error */
.doc-body .codehilite .gh { color: #F8F8F2 } /* Generic.Heading */
.doc-body .codehilite .gi { color: #A6E22E } /* Generic.Inserted */
.doc-body .codehilite .go { color: #66D9EF } /* Generic.Output */
.doc-body .codehilite .gp { color: #FF4689; font-weight: bold } /* Generic.Prompt */
.doc-body .codehilite .gs { color: #F8F8F2; font-weight: bold } /* Generic.Strong */
.doc-body .codehilite .gu { color: #959077 } /* Generic.Subheading */
.doc-body .codehilite .gt { color: #F8F8F2 } /* Generic.Traceback */
.doc-body .codehilite .kc { color: #66D9EF } /* Keyword.Constant */
.doc-body .codehilite .kd { color: #66D9EF } /* Keyword.Declaration */
.doc-body .codehilite .kn { color: #FF4689 } /* Keyword.Namespace */
.doc-body .codehilite .kp { color: #66D9EF } /* Keyword.Pseudo */
.doc-body .codehilite .kr { color: #66D9EF } /* Keyword.Reserved */
.doc-body .codehilite .kt { color: #66D9EF } /* Keyword.Type */
.doc-body .codehilite .ld { color: #E6DB74 } /* Literal.Date */
.doc-body .codehilite .m { color: #AE81FF } /* Literal.Number */
.doc-body .codehilite .s { color: #E6DB74 } /* Literal.String */
.doc-body .codehilite .na { color: #A6E22E } /* Name.Attribute */
.doc-body .codehilite .nb { color: #F8F8F2 } /* Name.Builtin */
.doc-body .codehilite .nc { color: #A6E22E } /* Name.Class */
.doc-body .codehilite .no { color: #66D9EF } /* Name.Constant */
.doc-body .codehilite .nd { color: #A6E22E } /* Name.Decorator */
.doc-body .codehilite .ni { color: #F8F8F2 } /* Name.Entity */
.doc-body .codehilite .ne { color: #A6E22E } /* Name.Exception */
.doc-body .codehilite .nf { color: #A6E22E } /* Name.Function */
.doc-body .codehilite .nl { color: #F8F8F2 } /* Name.Label */
.doc-body .codehilite .nn { color: #F8F8F2 } /* Name.Namespace */
.doc-body .codehilite .nx { color: #A6E22E } /* Name.Other */
.doc-body .codehilite .py { color: #F8F8F2 } /* Name.Property */
.doc-body .codehilite .nt { color: #FF4689 } /* Name.Tag */
.doc-body .codehilite .nv { color: #F8F8F2 } /* Name.Variable */
.doc-body .codehilite .ow { color: #FF4689 } /* Operator.Word */
.doc-body .codehilite .pm { color: #F8F8F2 } /* Punctuation.Marker */
.doc-body .codehilite .w { color: #F8F8F2 } /* Text.Whitespace */
.doc-body .codehilite .mb { color: #AE81FF } /* Literal.Number.Bin */
.doc-body .codehilite .mf { color: #AE81FF } /* Literal.Number.Float */
.doc-body .codehilite .mh { color: #AE81FF } /* Literal.Number.Hex */
.doc-body .codehilite .mi { color: #AE81FF } /* Literal.Number.Integer */
.doc-body .codehilite .mo { color: #AE81FF } /* Literal.Number.Oct */
.doc-body .codehilite .sa { color: #E6DB74 } /* Literal.String.Affix */
.doc-body .codehilite .sb { color: #E6DB74 } /* Literal.String.Backtick */
.doc-body .codehilite .sc { color: #E6DB74 } /* Literal.String.Char */
.doc-body .codehilite .dl { color: #E6DB74 } /* Literal.String.Delimiter */
.doc-body .codehilite .sd { color: #E6DB74 } /* Literal.String.Doc */
.doc-body .codehilite .s2 { color: #E6DB74 } /* Literal.String.Double */
.doc-body .codehilite .se { color: #AE81FF } /* Literal.String.Escape */
.doc-body .codehilite .sh { color: #E6DB74 } /* Literal.String.Heredoc */
.doc-body .codehilite .si { color: #E6DB74 } /* Literal.String.Interpol */
.doc-body .codehilite .sx { color: #E6DB74 } /* Literal.String.Other */
.doc-body .codehilite .sr { color: #E6DB74 } /* Literal.String.Regex */
.doc-body .codehilite .s1 { color: #E6DB74 } /* Literal.String.Single */
.doc-body .codehilite .ss { color: #E6DB74 } /* Literal.String.Symbol */
.doc-body .codehilite .bp { color: #F8F8F2 } /* Name.Builtin.Pseudo */
.doc-body .codehilite .fm { color: #A6E22E } /* Name.Function.Magic */
.doc-body .codehilite .vc { color: #F8F8F2 } /* Name.Variable.Class */
.doc-body .codehilite .vg { color: #F8F8F2 } /* Name.Variable.Global */
.doc-body .codehilite .vi { color: #F8F8F2 } /* Name.Variable.Instance */
.doc-body .codehilite .vm { color: #F8F8F2 } /* Name.Variable.Magic */
.doc-body .codehilite .il { color: #AE81FF } /* Literal.Number.Integer.Long */