:root {
  --bg: #070a12;
  --bg-raised: #101728;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-hover: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.93);
  --muted: rgba(255, 255, 255, 0.67);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #a58bff;
  --accent-soft: rgba(165, 139, 255, 0.16);
  --max-width: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: radial-gradient(1100px 720px at 10% 0%, #19264a 0%, transparent 62%), radial-gradient(900px 650px at 100% 10%, #2a1c43 0%, transparent 60%), var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); }

.vf-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  min-height: 58px;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 10, 18, 0.82);
  backdrop-filter: blur(14px);
}
.vf-topbarTitle { flex: 1; font-size: 15px; font-weight: 850; }
.vf-topbarTitle a { color: var(--text); text-decoration: none; }
.vf-menuButton {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  font-size: 18px;
}
.vf-externalLink { color: var(--muted); font-size: 13px; text-decoration: none; }
.vf-externalLink:hover { color: var(--text); }

.vf-sidenav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  width: min(340px, 86vw);
  padding: 14px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: #0b1020;
  box-shadow: 16px 0 44px rgba(0, 0, 0, 0.45);
  transform: translateX(-105%);
  transition: transform 160ms ease;
}
.vf-sidenav.is-open { transform: translateX(0); }
.vf-sidenavHead { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 2px 14px; }
.vf-brand { font-weight: 900; }
.vf-closeButton { border: 0; color: var(--muted); background: transparent; cursor: pointer; font-size: 20px; }
.vf-nav { display: grid; gap: 5px; }
.vf-navHeading { margin: 14px 8px 4px; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: 0.45px; text-transform: uppercase; }
.vf-nav a { padding: 10px 12px; border: 1px solid transparent; border-radius: 8px; color: var(--text); font-size: 14px; text-decoration: none; }
.vf-nav a:hover, .vf-nav a.is-active { border-color: rgba(165, 139, 255, 0.38); background: var(--accent-soft); }
.vf-backdrop { position: fixed; inset: 0; z-index: 25; background: rgba(0, 0, 0, 0.58); }

.vf-main { padding: 38px 18px 88px; }
.vf-container { width: min(100%, var(--max-width)); margin: 0 auto; }
.vf-docEyebrow { color: var(--accent); font-size: 13px; font-weight: 850; text-transform: uppercase; letter-spacing: 0.7px; }
.vf-h1 { max-width: 760px; margin: 8px 0 0; font-size: clamp(30px, 5vw, 50px); line-height: 1.04; letter-spacing: 0; }
.vf-h2 { margin: 0; font-size: 18px; }
.vf-h3 { margin: 20px 0 0; font-size: 15px; }
.vf-lede { max-width: 700px; color: var(--muted); font-size: 17px; line-height: 1.6; }
.vf-docGrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 26px; }
.vf-docCard, .vf-card { border: 1px solid var(--border); border-radius: 8px; background: var(--panel); }
.vf-docCard { display: grid; gap: 8px; min-height: 180px; padding: 18px; color: var(--text); text-decoration: none; }
.vf-docCard:hover { border-color: rgba(165, 139, 255, 0.5); background: var(--panel-hover); }
.vf-docCardKicker { color: var(--accent); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.55px; }
.vf-docCardTitle { font-size: 20px; font-weight: 900; }
.vf-docCardText { color: var(--muted); line-height: 1.45; }
.vf-docCallout, .vf-card { margin-top: 16px; padding: 18px; }
.vf-docCallout { border: 1px solid rgba(165, 139, 255, 0.35); border-radius: 8px; background: var(--accent-soft); }
.vf-docCallout p, .vf-card p, .vf-card li { color: var(--muted); line-height: 1.6; }
.vf-breadcrumb { display: inline-block; margin-bottom: 14px; color: var(--muted); font-size: 13px; text-decoration: none; }
.vf-breadcrumb:hover { color: var(--text); }
.vf-sectionList { margin: 12px 0 0; padding-left: 22px; }
.vf-linkGrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 14px; }
.vf-linkCard { display: block; padding: 15px; border: 1px solid var(--border); border-radius: 8px; color: var(--text); background: rgba(255, 255, 255, 0.035); text-decoration: none; }
.vf-linkCard:hover { border-color: rgba(165, 139, 255, 0.5); background: var(--panel-hover); }
.vf-linkCard strong { display: block; }
.vf-linkCard span { display: block; margin-top: 5px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.vf-tabs { display: flex; gap: 8px; margin-top: 18px; border-bottom: 1px solid var(--border); }
.vf-tab { padding: 9px 12px; border: 0; border-bottom: 2px solid transparent; color: var(--muted); background: transparent; cursor: pointer; font: inherit; font-weight: 800; }
.vf-tab[aria-selected="true"] { border-bottom-color: var(--accent); color: var(--text); }
.vf-tabPanel { padding-top: 14px; }
.vf-code { padding: 2px 5px; border: 1px solid var(--border); border-radius: 5px; background: rgba(255, 255, 255, 0.08); font-family: ui-monospace, Consolas, monospace; font-size: 0.9em; }
.vf-codeBlock { margin: 12px 0 0; padding: 14px; overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; background: rgba(0, 0, 0, 0.28); color: rgba(255, 255, 255, 0.88); font-family: ui-monospace, Consolas, monospace; font-size: 12px; line-height: 1.55; white-space: pre-wrap; }

@media (max-width: 760px) {
  .vf-docGrid, .vf-linkGrid { grid-template-columns: 1fr; }
  .vf-topbar { padding-inline: 12px; }
  .vf-externalLink { display: none; }
  .vf-main { padding: 28px 14px 70px; }
}