/* MDeX 介绍文档样式 —— 赛博深色（与主页统一，自包含、LTR/RTL） */
/* 自托管科幻展示字体（与主页同源） */
@font-face {
  font-family: "Orbitron";
  src: url("../../../assets/fonts/orbitron.woff2") format("woff2");
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #05060d;
  --bg-alt: #0a0c16;
  --surface: rgba(20, 24, 42, .55);
  --surface-solid: #121627;
  --text: #e6ecff;
  --text-soft: #aab3d6;
  --text-mute: #6f7aa0;
  --border: rgba(255, 255, 255, .08);
  --border-strong: rgba(255, 255, 255, .14);
  --border-neon: rgba(34, 211, 238, .35);
  --primary: #22d3ee;          /* 霓虹青 */
  --primary-600: #22d3ee;
  --accent: #a78bfa;           /* 霓虹紫 */
  --code-bg: #0b0e18;
  --cyan-glow: rgba(34, 211, 238, .5);
  --violet-glow: rgba(167, 139, 250, .5);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, .35);
  --shadow-md: 0 16px 36px -16px rgba(0, 0, 0, .6);
  --radius: 12px;
  --mono: "SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Roboto Mono", monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-color: var(--bg);
  background-image:
    radial-gradient(55% 45% at 12% -5%, rgba(34, 211, 238, .10), transparent 60%),
    radial-gradient(55% 45% at 100% 6%, rgba(167, 139, 250, .12), transparent 60%),
    linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 46px 46px, 46px 46px;
  background-attachment: fixed;
}
::selection { background: rgba(34, 211, 238, .28); color: #fff; }
a { color: var(--primary); }

/* ---------- 顶部栏：返回 + 语言切换（玻璃） ---------- */
.doc-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 10, 20, .55);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(34, 211, 238, .12);
}
.doc-header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.doc-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-soft);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}
.doc-back:hover { color: var(--primary); }

/* ---------- 语言切换器 ---------- */
.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .03);
  color: var(--text-soft);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s, color .15s, box-shadow .2s;
}
.lang-btn:hover { border-color: var(--border-neon); color: var(--primary); box-shadow: 0 0 0 1px rgba(34, 211, 238, .15); }
.lang-chev { transition: transform .15s; }
.lang-btn[aria-expanded="true"] .lang-chev { transform: rotate(180deg); }
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface-solid);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(34, 211, 238, .08);
  min-width: 160px;
  z-index: 60;
  display: grid;
  gap: 2px;
  max-height: min(70vh, 460px);
  overflow-y: auto;
}
.lang-menu[hidden] { display: none; }
.lang-opt {
  display: block;
  width: 100%;
  text-align: start;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: background .12s, color .12s;
}
.lang-opt:hover { background: rgba(34, 211, 238, .10); color: var(--text); }
.lang-opt.active { color: var(--primary); font-weight: 700; }

/* ---------- 正文 ---------- */
.md-doc {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 20px 96px;
}
.md-doc > *:first-child { margin-top: 0; }
.md-doc h1 {
  font-family: "Orbitron", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-size: 1.95rem;
  line-height: 1.25;
  letter-spacing: .03em;
  margin: 0 0 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-neon);
  background: linear-gradient(110deg, var(--primary), var(--accent) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.md-doc h2 {
  font-size: 1.4rem;
  margin: 2.2em 0 .6em;
  padding-bottom: .3em;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.md-doc h3 { font-size: 1.15rem; margin: 1.8em 0 .5em; color: var(--primary); }
.md-doc h4 { font-size: 1rem; margin: 1.5em 0 .4em; color: var(--text); }
.md-doc p { margin: .7em 0; }
.md-doc ul, .md-doc ol { padding-inline-start: 1.6em; }
.md-doc li { margin: .3em 0; }
.md-doc li::marker { color: var(--accent); }
.md-doc a { color: var(--primary); text-decoration: none; }
.md-doc a:hover { text-decoration: underline; text-underline-offset: 2px; }
.md-doc strong { color: var(--text); font-weight: 700; }
.md-doc blockquote {
  margin: 1em 0;
  padding: .5em 1em;
  border-inline-start: 3px solid var(--accent);
  background: rgba(167, 139, 250, .06);
  border-radius: 0 8px 8px 0;
  color: var(--text-soft);
}
[dir="rtl"] .md-doc blockquote { border-radius: 8px 0 0 8px; }
.md-doc hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
.md-doc code {
  font-family: var(--mono);
  font-size: .88em;
  background: rgba(34, 211, 238, .08);
  border: 1px solid var(--border);
  color: var(--primary);
  padding: .12em .4em;
  border-radius: 5px;
}
.md-doc pre {
  background: var(--code-bg);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  line-height: 1.55;
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, .04);
}
.md-doc pre code {
  background: transparent;
  border: 0;
  color: var(--text);
  padding: 0;
  font-size: .85em;
  border-radius: 0;
}
.md-doc table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
  font-size: .92em;
  display: block;
  overflow-x: auto;
}
.md-doc th, .md-doc td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: start;
}
.md-doc th { background: rgba(34, 211, 238, .08); color: var(--text); font-weight: 700; }
.md-doc img { max-width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--border); }
.md-doc ul.contains-task-list { list-style: none; padding-inline-start: 1.2em; }
.md-doc input[type="checkbox"] { margin-inline-end: .4em; accent-color: var(--primary); }