/* RapidHub developer documentation — self-contained, no external assets. */
:root {
  --bg: #0f1115;
  --bg-elev: #151821;
  --bg-elev-2: #1b1f2a;
  --bg-code: #0b0d12;
  --border: #252a37;
  --border-strong: #343a4a;
  --text: #e6e8ee;
  --text-strong: #ffffff;
  --muted: #9aa3b2;
  --faint: #6b7385;
  --accent: #ff7a59;
  --accent-strong: #ff8f73;
  --accent-soft: rgba(255, 122, 89, 0.12);
  --link: #ff9a80;
  --note: #5aa9ff;
  --note-soft: rgba(90, 169, 255, 0.10);
  --warn: #f5b84b;
  --warn-soft: rgba(245, 184, 75, 0.10);
  --danger: #ff6b6b;
  --danger-soft: rgba(255, 107, 107, 0.10);
  --ok: #3ecf8e;
  --ok-soft: rgba(62, 207, 142, 0.10);
  --tok-key: #9cdcfe;
  --tok-str: #a5d6a7;
  --tok-num: #f7c37b;
  --tok-kw: #ff9a80;
  --tok-type: #c3a6ff;
  --tok-com: #6b7385;
  --tok-lit: #ffcb6b;
  --tok-fn: #82aaff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --header-h: 60px;
  --nav-w: 280px;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-elev: #f7f8fa;
  --bg-elev-2: #eef0f4;
  --bg-code: #f6f7f9;
  --border: #e3e6ec;
  --border-strong: #cfd4dd;
  --text: #1f2430;
  --text-strong: #0b0e14;
  --muted: #5b6475;
  --faint: #8a93a3;
  --accent: #e8572f;
  --accent-strong: #d0461f;
  --accent-soft: rgba(232, 87, 47, 0.09);
  --link: #c8441d;
  --note: #1f6fd1;
  --note-soft: rgba(31, 111, 209, 0.07);
  --warn: #a66a00;
  --warn-soft: rgba(214, 150, 20, 0.10);
  --danger: #c62f2f;
  --danger-soft: rgba(198, 47, 47, 0.07);
  --ok: #138a55;
  --ok-soft: rgba(19, 138, 85, 0.08);
  --tok-key: #0b5cad;
  --tok-str: #24792f;
  --tok-num: #a35200;
  --tok-kw: #c8441d;
  --tok-type: #6f42c1;
  --tok-com: #8a93a3;
  --tok-lit: #a35200;
  --tok-fn: #1f5fbf;
  --shadow: 0 10px 30px rgba(20, 30, 50, 0.12);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
::selection { background: var(--accent-soft); }

/* ---------------------------------------------------------------- header */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 50;
  display: flex; align-items: center; gap: 16px; padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text-strong); font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #ff4f7a); color: #fff; font-size: 15px; font-weight: 800;
}
.brand small { font-weight: 500; color: var(--muted); font-size: 14px; }
.top-links { display: flex; gap: 4px; margin-left: 8px; }
.top-links a { color: var(--muted); font-size: 14px; padding: 6px 10px; border-radius: 8px; white-space: nowrap; }
.top-links a:hover, .top-links a.active { color: var(--text-strong); background: var(--bg-elev-2); text-decoration: none; }
.top-spacer { flex: 1; }
.search { position: relative; width: min(340px, 40vw); }
.search input {
  width: 100%; height: 36px; padding: 0 64px 0 36px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text); font: inherit; font-size: 14px; outline: none;
}
.search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search .icon { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--faint); pointer-events: none; }
.search kbd {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font: 11px var(--mono); color: var(--faint); border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; background: var(--bg);
}
.search-results {
  position: absolute; top: 44px; left: 0; right: 0; max-height: min(70vh, 520px); overflow-y: auto;
  background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: 12px; box-shadow: var(--shadow); padding: 6px; display: none;
}
.search-results.open { display: block; }
.search-results a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--text); }
.search-results a:hover, .search-results a.sel { background: var(--accent-soft); text-decoration: none; }
.search-results .r-title { font-weight: 600; font-size: 14px; }
.search-results .r-group { color: var(--faint); font-size: 12px; margin-left: 6px; font-weight: 400; }
.search-results .r-snip { color: var(--muted); font-size: 13px; line-height: 1.45; margin-top: 2px; }
.search-results mark { background: none; color: var(--accent-strong); font-weight: 600; }
.search-results .empty { padding: 12px; color: var(--muted); font-size: 14px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--muted); cursor: pointer;
}
.icon-btn:hover { color: var(--text-strong); border-color: var(--border-strong); }
.menu-btn { display: none; }

/* ---------------------------------------------------------------- nav */
.sidenav {
  position: fixed; top: var(--header-h); bottom: 0; left: 0; width: var(--nav-w); overflow-y: auto; z-index: 40;
  padding: 22px 14px 40px 20px; border-right: 1px solid var(--border); background: var(--bg);
  scrollbar-width: thin;
}
.nav-group { margin-bottom: 22px; }
.nav-group h4 { margin: 0 0 6px 10px; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); font-weight: 700; }
.sidenav a {
  display: block; padding: 5px 10px; margin: 1px 0; border-radius: 7px; color: var(--muted); font-size: 14.5px; line-height: 1.4;
  border-left: 2px solid transparent;
}
.sidenav a:hover { color: var(--text-strong); background: var(--bg-elev); text-decoration: none; }
.sidenav a.active { color: var(--accent-strong); background: var(--accent-soft); font-weight: 600; }
.sidenav a.sub { padding-left: 22px; font-size: 13.5px; }
.nav-scrim { display: none; }

/* ---------------------------------------------------------------- content */
.main { margin-left: var(--nav-w); padding-top: var(--header-h); min-width: 0; }
.content { max-width: 900px; padding: 44px 56px 120px; margin: 0 auto 0 0; }
.hero { padding: 8px 0 20px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; }
h1 { font-size: 40px; line-height: 1.15; letter-spacing: -0.025em; margin: 10px 0 14px; color: var(--text-strong); }
.lead { font-size: 18.5px; color: var(--muted); max-width: 720px; margin: 0 0 22px; }
h2 {
  font-size: 28px; line-height: 1.25; letter-spacing: -0.02em; color: var(--text-strong);
  margin: 72px 0 14px; padding-top: 28px; border-top: 1px solid var(--border);
}
section > h2:first-child { }
h3 { font-size: 20px; line-height: 1.35; color: var(--text-strong); margin: 40px 0 10px; letter-spacing: -0.01em; }
h4 { font-size: 16px; color: var(--text-strong); margin: 26px 0 8px; }
h2, h3, h4 { position: relative; }
.anchor {
  position: absolute; left: -24px; top: auto; padding-right: 6px; color: var(--faint); opacity: 0; font-weight: 400; text-decoration: none !important;
}
h2 .anchor { top: 28px; }
h2:hover .anchor, h3:hover .anchor, h4:hover .anchor, .anchor:focus { opacity: 1; }
.anchor:hover { color: var(--accent); }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin: 4px 0; }
li > ul, li > ol { margin: 4px 0; }
strong { color: var(--text-strong); font-weight: 650; }
hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

code, kbd, pre { font-family: var(--mono); }
:not(pre) > code {
  font-size: 0.86em; padding: 2px 6px; border-radius: 6px; background: var(--bg-elev-2); color: var(--text-strong);
  border: 1px solid var(--border); white-space: break-spaces; word-break: break-word;
}
a > code { color: var(--link); }

/* cards / grids */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin: 22px 0 8px; }
.card {
  display: block; padding: 18px 18px 16px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}
a.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.card .c-title { font-weight: 650; color: var(--text-strong); margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.card .c-text { color: var(--muted); font-size: 14px; line-height: 1.5; }
.card .c-icon { width: 30px; height: 30px; border-radius: 8px; display: inline-grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-size: 15px; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 18px 0; }
.steps > li { position: relative; padding: 0 0 18px 46px; margin: 0; }
.steps > li::before {
  counter-increment: step; content: counter(step); position: absolute; left: 0; top: -1px; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; font-size: 14px; color: var(--accent); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.steps > li::after { content: ""; position: absolute; left: 15px; top: 34px; bottom: 4px; width: 1px; background: var(--border); }
.steps > li:last-child::after { display: none; }
.steps > li > strong:first-child { display: block; margin-bottom: 2px; }

/* callouts */
.callout { border: 1px solid var(--border); border-left: 3px solid var(--note); background: var(--note-soft); border-radius: 10px; padding: 14px 16px 2px; margin: 18px 0; }
.callout > .c-head { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--note); margin-bottom: 6px; font-size: 14.5px; }
.callout.warning { border-left-color: var(--warn); background: var(--warn-soft); }
.callout.warning > .c-head { color: var(--warn); }
.callout.danger { border-left-color: var(--danger); background: var(--danger-soft); }
.callout.danger > .c-head { color: var(--danger); }
.callout.tip { border-left-color: var(--ok); background: var(--ok-soft); }
.callout.tip > .c-head { color: var(--ok); }
.callout p, .callout ul { font-size: 15px; }

/* endpoint badge */
.endpoint {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg-elev); margin: 14px 0 18px; font-family: var(--mono); font-size: 14.5px;
}
.endpoint code { background: none !important; border: 0 !important; padding: 0 !important; font-size: 14.5px !important; word-break: break-all; }
.method { font: 700 12px var(--mono); letter-spacing: 0.04em; padding: 3px 8px; border-radius: 6px; color: #fff; }
.method.get { background: #2f8f5b; }
.method.post { background: #2b6fd6; }
.method.put { background: #b7791f; }
.method.ws { background: #8a4fd8; }
.endpoint .auth { margin-left: auto; font: 12px var(--font); color: var(--muted); }

/* tables */
.table-wrap { overflow-x: auto; margin: 14px 0 22px; border: 1px solid var(--border); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--bg-elev); color: var(--text-strong); font-weight: 650; font-size: 13px; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
td.wrap code, td .wrap { white-space: break-spaces; }
.type { color: var(--tok-type); font-family: var(--mono); font-size: 13px; white-space: nowrap; }
.req { color: var(--accent); font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin-left: 6px; }
.opt { color: var(--faint); font-size: 11.5px; margin-left: 6px; }
.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 999px; background: var(--bg-elev-2); border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.pill.yes { color: var(--ok); background: var(--ok-soft); border-color: transparent; }
.pill.no { color: var(--faint); }
.pill.v2 { color: var(--accent); background: var(--accent-soft); border-color: transparent; }

/* code blocks */
.code, .tabs {
  margin: 14px 0 22px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-code); overflow: hidden;
}
.code-head, .tab-bar {
  display: flex; align-items: center; gap: 2px; min-height: 40px; padding: 0 6px 0 12px; border-bottom: 1px solid var(--border); background: var(--bg-elev);
}
.code-head .label { font: 600 12px var(--font); color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.code-head .title { font: 12.5px var(--mono); color: var(--muted); margin-left: 8px; }
.tab-bar { padding-left: 4px; overflow-x: auto; scrollbar-width: none; }
.tab-bar::-webkit-scrollbar { display: none; }
.tab-bar button.tab {
  font: 600 13px var(--font); color: var(--muted); background: none; border: 0; padding: 11px 12px 10px; cursor: pointer; border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab-bar button.tab:hover { color: var(--text-strong); }
.tab-bar button.tab[aria-selected="true"] { color: var(--accent-strong); border-bottom-color: var(--accent); }
.copy {
  margin-left: auto; font: 600 12px var(--font); color: var(--muted); background: transparent; border: 1px solid var(--border); border-radius: 7px;
  padding: 4px 10px; cursor: pointer; white-space: nowrap; flex: none;
}
.copy:hover { color: var(--text-strong); border-color: var(--border-strong); }
.copy.done { color: var(--ok); border-color: var(--ok); }
.tab-panel[hidden] { display: none; }
pre {
  margin: 0; padding: 16px 18px; overflow: auto; font-size: 13.2px; line-height: 1.6; color: var(--text); tab-size: 2;
  max-height: 560px; scrollbar-width: thin;
}
pre.tall { max-height: 820px; }
pre code { font-size: inherit; }
.tok-key { color: var(--tok-key); }
.tok-str { color: var(--tok-str); }
.tok-num { color: var(--tok-num); }
.tok-kw { color: var(--tok-kw); }
.tok-type { color: var(--tok-type); }
.tok-com { color: var(--tok-com); font-style: italic; }
.tok-lit { color: var(--tok-lit); }
.tok-fn { color: var(--tok-fn); }
.tok-flag { color: var(--tok-type); }
.tok-punct { color: var(--muted); }

/* figures */
figure.diagram { margin: 18px 0 26px; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-elev); overflow-x: auto; }
figure.diagram svg { display: block; min-width: 640px; width: 100%; height: auto; }
figure.diagram figcaption { color: var(--muted); font-size: 13.5px; margin-top: 10px; }
.d-node rect { fill: var(--bg); stroke: var(--border-strong); stroke-width: 1.5; }
.d-node.accent rect { fill: var(--accent-soft); stroke: var(--accent); }
.d-node.terminal rect { stroke-dasharray: 0; fill: var(--bg-elev-2); }
.d-node.bad rect { fill: var(--danger-soft); stroke: var(--danger); }
.d-node text { fill: var(--text-strong); font: 600 14px var(--font); }
.d-node text.sub { fill: var(--muted); font: 12px var(--font); }
.d-edge { stroke: var(--faint); stroke-width: 1.6; fill: none; }
.d-edge.main { stroke: var(--accent); stroke-width: 2; }
.d-edge.soft { stroke-dasharray: 5 5; }
.d-edge.bad { stroke: var(--danger); stroke-dasharray: 5 5; }
.d-label { fill: var(--muted); font: 12px var(--font); }
.d-arrow { fill: var(--faint); }
.d-arrow.main { fill: var(--accent); }
.d-arrow.bad { fill: var(--danger); }
.d-box { fill: none; stroke: var(--border); stroke-dasharray: 4 4; }
.d-title { fill: var(--faint); font: 700 11px var(--font); letter-spacing: 0.08em; text-transform: uppercase; }

/* misc */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 14.5px; margin: 10px 0 18px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
details.more { border: 1px solid var(--border); border-radius: 10px; margin: 12px 0 18px; background: var(--bg-elev); }
details.more > summary { cursor: pointer; padding: 11px 14px; font-weight: 600; color: var(--text-strong); list-style: none; }
details.more > summary::-webkit-details-marker { display: none; }
details.more > summary::before { content: "▸"; display: inline-block; width: 18px; color: var(--accent); transition: transform 0.15s; }
details.more[open] > summary::before { transform: rotate(90deg); }
details.more > .inner { padding: 0 14px 4px; }
details.more > .inner > .code, details.more > .inner > .tabs { margin-top: 4px; }
.footer { margin-top: 90px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--faint); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer a { color: var(--muted); }
.check { list-style: none; padding: 0; }
.check li { padding-left: 30px; position: relative; margin: 8px 0; }
.check li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 6px; background: var(--ok-soft); color: var(--ok); font-size: 13px; font-weight: 800; display: grid; place-items: center; margin-top: 3px; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 4px; }
.badge-row .pill { font-size: 12.5px; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1180px) {
  .content { padding: 40px 40px 110px; }
  .top-links { display: none; }
}
@media (max-width: 960px) {
  .menu-btn { display: inline-grid; }
  .sidenav { transform: translateX(-100%); transition: transform 0.2s ease; width: min(86vw, 320px); box-shadow: var(--shadow); }
  body.nav-open .sidenav { transform: none; }
  body.nav-open .nav-scrim { display: block; position: fixed; inset: var(--header-h) 0 0 0; background: rgba(0, 0, 0, 0.45); z-index: 30; }
  .main { margin-left: 0; }
  .content { max-width: none; }
  .anchor { display: none; }
}
@media (max-width: 640px) {
  :root { --header-h: 56px; }
  body { font-size: 15.5px; }
  .topbar { padding: 0 12px; gap: 10px; }
  .brand small { display: none; }
  .search { width: auto; flex: 1; }
  .search kbd { display: none; }
  .search input { padding-right: 12px; }
  .content { padding: 28px 16px 90px; }
  h1 { font-size: 30px; }
  h2 { font-size: 23px; margin-top: 54px; }
  h3 { font-size: 18px; }
  .lead { font-size: 16.5px; }
  .two-col { grid-template-columns: 1fr; }
  pre { font-size: 12.5px; padding: 14px; }
  th, td { padding: 8px 10px; }
  .endpoint .auth { margin-left: 0; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .topbar, .sidenav, .copy, .nav-scrim { display: none !important; }
  .main { margin: 0; padding: 0; }
  pre { max-height: none; white-space: pre-wrap; }
}