:root {
  color-scheme: dark;
  --bg: #1e1f22;
  --bg-alt: #26282c;
  --bg-soft: #222427;
  --text: #e4e6eb;
  --muted: #9aa0a6;
  --border: #3a3d42;
  --accent: #7cc4ff;
  --code-bg: #16171a;
  --sig-bg: #2a3441;
  --warn-bg: #3a2f18;
  --warn-border: #d4a017;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
body a { color: var(--accent); }

pre, code {
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.93em;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  overflow-x: auto;
  border-radius: 7px;
  padding: 0;
  line-height: 1.65;
}
code { background: var(--code-bg); padding: 1px 5px; border-radius: 3px; }
pre code { display:block; background:none; padding:12px 16px 14px 4.2em; counter-reset:code-line; white-space:pre; }
pre code .code-line { display:block; position:relative; min-height:1.65em; }
pre code .code-line::before { counter-increment:code-line; content:counter(code-line); position:absolute; right:calc(100% + 1.2em); width:2em; text-align:right; color:#6f7782; user-select:none; }

.sig {
  display: block;
  background: var(--sig-bg);
  border-left: 3px solid var(--accent);
  padding: 8px 12px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 14px;
  margin: 8px 0;
  white-space: pre;
  overflow-x: auto;
}
h1 { font-size: 22px; margin: 0 0 8px; }
h2 { font-size: 17px; margin: 18px 0 6px; }
p { margin: 6px 0; }
ul, ol { padding-left: 20px; margin: 6px 0; }
li { margin: 3px 0; }

table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
  font-size: 13px;
}
th, td {
  border: 1px solid var(--border);
  padding: 6px 9px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--bg-alt); }

.note, .warn {
  padding: 8px 12px;
  margin: 10px 0;
  border-radius: 4px;
  border-left: 3px solid;
  font-size: 13px;
}
.note { background: var(--sig-bg); border-color: var(--accent); }
.warn { background: var(--warn-bg); border-color: var(--warn-border); }
.crumb { font-size: 12px; color: var(--muted); margin: 0 0 10px; }
.toc {
  float: right;
  width: min(240px, 38%);
  margin: 0 0 16px 24px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-alt);
  font-size: 13px;
}
.toc ul { margin-bottom: 0; }
.toc a { color: var(--text); }
.toc a:hover { color: var(--accent); }
pre.code-block { position:relative; padding-top:0; }
.code-toolbar { height:36px; display:flex; align-items:center; justify-content:space-between; padding:0 8px 0 14px; background:#202329; border-bottom:1px solid var(--border); }
.code-language { color:var(--muted); font:600 10px/1 sans-serif; letter-spacing:.12em; }
.copy-code {
  padding: 4px 9px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-alt);
  color: var(--text);
  cursor: pointer;
}
.copy-code:hover { border-color: var(--accent); color: var(--accent); }
.tok-comment { color:#818b98; font-style:italic; }
.tok-string { color:#a8d38d; }
.tok-number { color:#d6a8ff; }
.tok-keyword { color:#d69adf; font-weight:600; }
.tok-library { color:#78c9c3; }
.tok-function { color:#82b8ff; }
.tok-operator { color:#e5a86e; }

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  grid-template-rows: 48px 1fr;
  height: 100vh;
}
.app header { grid-column: 1 / -1; border: 0; position: relative; }
.app iframe#nav { width: 100%; height: 100%; border: 0; background: var(--bg-alt); }
.app iframe#content { width: 100%; height: 100%; border: 0; background: var(--bg); }
.menu-toggle {
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  min-width: 32px;
  height: 32px;
  cursor: pointer;
}
.menu-toggle:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; position: absolute; left: 10px; top: 8px; z-index: 2; }
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; grid-template-rows: 48px 1fr; height: 100dvh; }
  .app iframe#nav { display: none; position: absolute; z-index: 5; top: 48px; left: 0; width: min(340px, 88vw); height: calc(100dvh - 48px); box-shadow: 12px 10px 28px #0008; }
  .app iframe#content { grid-column: 1; grid-row: 2; }
  body.nav-open .app iframe#nav { display: block; }
  .menu-toggle { display: block; }
  .app header iframe { padding-left: 52px; }
  .toc { float: none; width: 100%; margin: 12px 0 18px; }
}