/* ==========================================================================
   ANDROEQ+ 文档站样式
   风格参考：左侧固定目录 + 中间正文 + 右侧「本页目录」的三栏阅读布局，
   深色为默认主题，浅色由 [data-theme="light"] 覆盖。

   维护提示：
   - 所有颜色都走变量，加新组件时不要写死色值，否则浅色主题会出现
     「深色块漂在白底上」这种一眼假的效果。
   - 正文宽度用 max-width 控制而不是百分比：中文一行 40–50 字最好读，
     屏幕再宽也不要撑满。
   ========================================================================== */

:root {
  --topbar-h: 56px;
  --sidebar-w: 272px;
  --toc-w: 224px;
  --content-max: 812px;

  --bg: #0b0e13;
  --bg-soft: #0e1218;
  --panel: #11161d;
  --panel-2: #151b23;
  --border: #1d232c;
  --border-strong: #2a323d;
  --text: #e9edf4;
  --text-2: #c3ccdb;
  --muted: #7e8a9c;
  --accent: #5b93ff;
  --accent-2: #8fb6ff;
  --accent-soft: rgba(91, 147, 255, 0.12);
  --code-bg: #090c11;
  --code-bar: #0d1117;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --panel: #ffffff;
  --panel-2: #f3f5f8;
  --border: #e5e8ee;
  --border-strong: #d3d8e0;
  --text: #12161d;
  --text-2: #3c454f;
  --muted: #6b7482;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --accent-soft: rgba(37, 99, 235, 0.09);
  --code-bg: #f6f7f9;
  --code-bar: #eef1f5;
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(91, 147, 255, 0.3); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ------------------------------------------------------------------ 顶栏 */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(145deg, #5b93ff, #2f6bdc);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-text { display: flex; align-items: baseline; gap: 7px; font-size: 14.5px; }
.brand-sub {
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 500;
  padding-left: 7px;
  border-left: 1px solid var(--border-strong);
}

.search-trigger {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 9px;
  width: 268px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.search-trigger:hover { border-color: var(--border-strong); background: var(--panel-2); }
.search-trigger span { flex: 1; text-align: left; }
.search-trigger svg { width: 15px; height: 15px; flex: none; }

.topbar-right { display: flex; align-items: center; gap: 6px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
}
.icon-btn:hover { background: var(--panel-2); border-color: var(--border); }
.icon-btn svg { width: 18px; height: 18px; }

#themeToggle .i-moon { display: none; }
[data-theme="light"] #themeToggle .i-sun { display: none; }
[data-theme="light"] #themeToggle .i-moon { display: block; }

.hamburger { display: none; }

kbd {
  font-family: inherit;
  font-size: 10.5px;
  color: var(--muted);
  padding: 1px 5px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel-2);
  white-space: nowrap;
}

/* ------------------------------------------------------------------ 布局 */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  align-items: start;
}

/* ------------------------------------------------------------------ 侧边栏 */

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 22px 16px 18px 20px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 20px;
  scrollbar-width: thin;
}

.nav { flex: 1; }

.nav-group + .nav-group { margin-top: 22px; }

.nav-group-title {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0 8px 8px;
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 7px;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.5;
  transition: background 0.13s, color 0.13s;
}
.nav-link:hover { background: var(--panel-2); color: var(--text); text-decoration: none; }

.nav-link.is-active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

.nav-link.is-external { color: var(--muted); }
.nav-link.is-external svg { width: 11px; height: 11px; opacity: 0.75; }

.sidebar-foot { border-top: 1px solid var(--border); padding-top: 14px; }

.powered {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font-size: 11.5px;
}
.powered:hover { color: var(--text-2); text-decoration: none; border-color: var(--border-strong); }

.powered-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3fb950;
  box-shadow: 0 0 0 3px rgba(63, 185, 80, 0.16);
}

/* ------------------------------------------------------------------ 正文 */

.content { min-width: 0; }

.content-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px 32px 96px;
}

.doc-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}
.doc-title--slim { justify-content: flex-end; margin-bottom: 8px; }

.doc-title h1 {
  margin: 0;
  font-size: 2.35rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.022em;
}

.copy-page {
  flex: none;
  margin-top: 8px;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.copy-page:hover { color: var(--text); border-color: var(--border-strong); }

.doc > h1 { display: none; }

.doc h2 {
  margin: 2.4em 0 0.7em;
  font-size: 1.55rem;
  line-height: 1.35;
  font-weight: 650;
  letter-spacing: -0.014em;
  scroll-margin-top: calc(var(--topbar-h) + 18px);
}

.doc h3 {
  margin: 1.9em 0 0.6em;
  font-size: 1.1rem;
  font-weight: 650;
  scroll-margin-top: calc(var(--topbar-h) + 18px);
}

.doc h4 {
  margin: 1.6em 0 0.5em;
  font-size: 0.98rem;
  font-weight: 650;
  color: var(--text-2);
  scroll-margin-top: calc(var(--topbar-h) + 18px);
}

.doc p { margin: 0.95em 0; color: var(--text-2); }

.doc .lead { font-size: 1.02rem; color: var(--text-2); }

.anchor {
  margin-left: 0.32em;
  color: var(--muted);
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.13s;
}
h2:hover .anchor, h3:hover .anchor, h4:hover .anchor { opacity: 1; }
.anchor:hover { color: var(--accent); text-decoration: none; }

.doc ul, .doc ol { margin: 0.9em 0; padding-left: 1.4em; color: var(--text-2); }
.doc li { margin: 0.34em 0; }
.doc li::marker { color: var(--muted); }
.doc li > ul, .doc li > ol { margin: 0.3em 0; }

.doc strong { color: var(--text); font-weight: 600; }

.doc code {
  font-family: "JetBrains Mono", "Cascadia Code", ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 0.855em;
  padding: 0.12em 0.4em;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--panel-2);
  color: var(--text);
  word-break: break-word;
}

.doc hr {
  margin: 2.6em 0;
  border: 0;
  height: 1px;
  background: var(--border);
}

.callout {
  margin: 1.4em 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 0 9px 9px 0;
  background: var(--accent-soft);
  color: var(--text-2);
  font-size: 0.94rem;
}
.callout p { margin: 0.25em 0; }
.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }

/* 代码块 */

.code {
  margin: 1.3em 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--code-bg);
}

.code-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background: var(--code-bar);
  border-bottom: 1px solid var(--border);
}

.code-lang {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

.code-copy {
  margin-left: auto;
  padding: 2px 8px;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  font-family: inherit;
  cursor: pointer;
}
.code-copy:hover { color: var(--text); border-color: var(--border-strong); }
.code-copy.is-done { color: #3fb950; }

.code pre {
  margin: 0;
  padding: 15px 16px;
  overflow-x: auto;
  font-family: "JetBrains Mono", "Cascadia Code", ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 12.8px;
  line-height: 1.7;
  tab-size: 2;
}
.code pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: inherit;
  color: #d6deeb;
  white-space: pre;
}
[data-theme="light"] .code pre code { color: #24303f; }

/* 表格 */

.table-wrap {
  margin: 1.4em 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow-x: auto;
}

.md-table { width: 100%; border-collapse: collapse; font-size: 13.6px; }

.md-table th {
  padding: 9px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-2);
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.md-table td {
  padding: 9px 14px;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.md-table tr:last-child td { border-bottom: 0; }
.md-table tbody tr:hover td { background: var(--panel-2); }
.md-table code { font-size: 0.92em; }

/* 首页卡片 */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: 12px;
  margin: 1.8em 0 2.2em;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 17px 17px 15px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  color: inherit;
  transition: border-color 0.16s, transform 0.16s, background 0.16s;
}
.card:hover {
  border-color: var(--accent);
  background: var(--panel-2);
  transform: translateY(-2px);
  text-decoration: none;
}

.card-kicker {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.card-title { font-size: 14.5px; font-weight: 600; color: var(--text); line-height: 1.45; }

.card-text { margin: 0; font-size: 13px; line-height: 1.65; color: var(--muted); }

.card-arrow { margin-top: auto; padding-top: 8px; font-size: 12.5px; color: var(--accent); }

/* 页脚 */

.doc-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 64px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--muted);
}
.doc-foot a { color: var(--muted); }
.doc-foot a:hover { color: var(--accent); }
.doc-foot .dot { opacity: 0.5; }

/* ------------------------------------------------------------------ 本页目录 */

.toc {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 40px 20px 40px 8px;
  scrollbar-width: thin;
}

.toc-title {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.toc-list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }

.toc-list li { margin: 0; }

.toc-link {
  display: block;
  padding: 4px 0 4px 12px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--muted);
  font-size: 12.8px;
  line-height: 1.5;
  transition: color 0.13s, border-color 0.13s;
}
.toc-link:hover { color: var(--text-2); text-decoration: none; }
.toc-link.is-sub { padding-left: 24px; font-size: 12.3px; }
.toc-link.is-active { color: var(--accent); border-left-color: var(--accent); font-weight: 500; }

.toc-empty { color: var(--muted); font-size: 12.5px; }

/* ------------------------------------------------------------------ 搜索 */

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  padding: 12vh 18px 18px;
  background: rgba(4, 6, 10, 0.62);
  backdrop-filter: blur(3px);
  overflow-y: auto;
}
.search-overlay[hidden] { display: none; }

.search-panel {
  max-width: 620px;
  margin: 0 auto;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.search-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--border);
}
.search-row svg { width: 16px; height: 16px; color: var(--muted); flex: none; }

#searchInput {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}
#searchInput::placeholder { color: var(--muted); }

.search-results { max-height: 54vh; overflow-y: auto; padding: 6px; }

.result {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 9px 11px;
  border-radius: 8px;
  color: inherit;
  cursor: pointer;
}
.result:hover, .result.is-active { background: var(--accent-soft); text-decoration: none; }

.result-head { display: flex; align-items: center; gap: 8px; }
.result-title { font-size: 13.5px; font-weight: 600; color: var(--text); }
.result-page {
  font-size: 10.5px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 5px;
  white-space: nowrap;
}
.result-snippet {
  font-size: 12.3px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.result-snippet mark { background: rgba(91, 147, 255, 0.22); color: var(--text); border-radius: 2px; }

.search-empty { padding: 22px 14px; text-align: center; color: var(--muted); font-size: 13px; }

.search-hint {
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  font-size: 11.5px;
  color: var(--muted);
  background: var(--panel-2);
}

.scrim {
  position: fixed;
  inset: var(--topbar-h) 0 0;
  z-index: 45;
  background: rgba(4, 6, 10, 0.55);
}
.scrim[hidden] { display: none; }

/* 上一页 / 下一页 */

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 56px;
}

.pager-link {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  transition: border-color 0.15s, background 0.15s;
}
.pager-link:hover { border-color: var(--accent); background: var(--panel-2); text-decoration: none; }

.pager-label { font-size: 11px; color: var(--muted); }
.pager-title { font-size: 13.5px; font-weight: 600; color: var(--text); }

.pager-next { grid-column: 2; text-align: right; align-items: flex-end; }

/* ------------------------------------------------------------------ 响应式 */

@media (max-width: 1240px) {
  .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
}

@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }

  .hamburger { display: grid; }

  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    z-index: 50;
    width: 284px;
    background: var(--bg);
    transform: translateX(-102%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.is-open { transform: none; }

  .content-inner { padding: 28px 20px 72px; }
  .doc-title h1 { font-size: 1.8rem; }
  .search-trigger { width: auto; }
  .search-trigger span, .search-trigger kbd { display: none; }
}

@media (max-width: 520px) {
  .brand-sub { display: none; }
  .pager { grid-template-columns: 1fr; }
  .pager-next { grid-column: 1; }
  .doc-title h1 { font-size: 1.6rem; }
  .doc h2 { font-size: 1.35rem; }
  .cards { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 6px; border: 2px solid var(--bg); }
::-webkit-scrollbar-track { background: transparent; }

@media print {
  .topbar, .sidebar, .toc, .search-overlay, .copy-page, .code-copy { display: none !important; }
  .layout { display: block; }
  .content-inner { max-width: none; padding: 0; }
  body { background: #fff; color: #000; }
}