:root {
  --bg: #f5f6f8;
  --paper: #ffffff;
  --panel: #1c2535;
  --ink: #1a2030;
  --ink-soft: #5a6478;
  --line: #dde2eb;
  --accent: #2456c2;
  --accent-strong: #1c44a0;
  --gold: #b07a17;
  --code-bg: #f1f3f7;
  --shadow: 0 18px 48px rgba(28, 37, 53, .12);
  --content: 76rem;
  --sidebar: 18rem;
  --font-body: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-code: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-body);
  line-height: 1.6;
}

a { color: var(--accent-strong); text-underline-offset: .18em; }
a:hover { color: var(--accent); }

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

code, pre { font-family: var(--font-code); }

.skip-link {
  position: absolute; left: 1rem; top: -5rem; z-index: 20;
  padding: .7rem 1rem; color: var(--paper); background: var(--panel);
  border-radius: .45rem;
}
.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.page-shell {
  width: min(calc(100% - 1.5rem), var(--content));
  margin: 1.2rem auto;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

/* --- header --- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 1rem clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
}
.site-header--compact {
  position: sticky; top: 0; z-index: 5;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex; align-items: center; gap: .65rem;
  color: var(--ink); text-decoration: none; font-weight: 700;
}
.brand__name { font-size: 1.05rem; font-family: var(--font-code); }

.top-nav {
  display: flex; flex-wrap: wrap; gap: .3rem .85rem; font-weight: 600;
}
.top-nav a { color: var(--ink); text-decoration: none; }
.top-nav a:hover { color: var(--accent-strong); }

.eyebrow {
  margin: 0 0 .5rem; color: var(--gold); font-weight: 800;
  text-transform: uppercase; letter-spacing: .08em; font-size: .78rem;
}
.eyebrow a { color: inherit; text-decoration: none; }
.eyebrow a:hover { color: var(--accent-strong); }

/* --- home page (doc-page-style layout: sidebar + article) --- */
.home-layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  gap: 0;
}
@media (max-width: 60rem) {
  .home-layout { grid-template-columns: 1fr; }
}

.home-sidebar {
  padding: 1.2rem 1rem;
  border-right: 1px solid var(--line);
  background: #fafbfd;
  font-size: .92rem;
  max-height: calc(100vh - 1.2rem);
  overflow-y: auto;
  position: sticky; top: 0;
  align-self: start;
}
@media (max-width: 60rem) {
  .home-sidebar {
    position: static; border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

.home-main {
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem);
  min-width: 0;
}

.home-main__about { max-width: 56rem; }
.home-main__about > .prose { max-width: 56rem; }

/* --- hero band on homepage: dark, full page-shell width, centered --- */
.hero {
  background: var(--panel);
  color: #f1f4f9;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  text-align: center;
  border-bottom: 1px solid var(--line);
}

.hero__logo {
  display: block;
  width: clamp(72px, 12vw, 110px);
  height: auto;
}

.hero__title {
  margin: 0;
  font-family: var(--font-code);
  font-size: clamp(1.9rem, 4.8vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 700;
}

/* Site-wide Beta badge in the sticky header — small, sits between the
   brand link and the top-nav on every page. Hidden on phones to keep
   the header from wrapping awkwardly. */
.site-header__beta {
  display: inline-block;
  font-family: var(--font-code);
  font-weight: 900;
  font-size: .78rem;
  letter-spacing: .18em;
  color: #d54a3c;
  border: 2px solid #d54a3c;
  padding: .08rem .5rem .12rem;
  border-radius: .3rem;
  transform: rotate(-8deg);
  opacity: .85;
  text-transform: uppercase;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  text-shadow: 0 0 2px rgba(213, 74, 60, 0.18);
}
@media (max-width: 720px) {
  .site-header__beta { display: none; }
}

/* Rubber-stamp Beta badge — adapted from mod_botshield. Default size
   fits inline next to an H1; the .hero context override below makes it
   larger when it appears centered under the hero title. */
.hero__beta-stamp {
  display: inline-block;
  font-family: var(--font-code);
  font-weight: 900;
  font-size: clamp(.95rem, 1.7vw, 1.15rem);
  letter-spacing: 0.18em;
  color: #d54a3c;
  border: 2px solid #d54a3c;
  padding: 0.15rem 0.6rem 0.2rem;
  border-radius: 0.35rem;
  transform: rotate(-12deg);
  opacity: 0.85;
  text-transform: uppercase;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  text-shadow: 0 0 2px rgba(213, 74, 60, 0.18);
  vertical-align: middle;
}

.hero .hero__beta-stamp {
  font-size: clamp(1.15rem, 2.4vw, 1.65rem);
  border-width: 3px;
  padding: 0.25rem 0.85rem 0.3rem;
  opacity: 0.92;
}

/* --- group page --- */
.group-layout {
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem);
}
.group-header h1 {
  margin: 0 0 .4rem; font-size: clamp(1.8rem, 4vw, 2.6rem);
}
.group-header__summary {
  max-width: 55rem; margin: 0 0 .25rem; color: var(--ink-soft); font-size: 1.05rem;
}
.group-header__count {
  margin: 0 0 1.5rem; color: var(--ink-soft); font-size: .85rem;
  font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
}
.group-pages {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
  gap: .6rem;
}
.group-pages a {
  display: block; padding: .8rem 1rem;
  background: var(--paper); border: 1px solid var(--line);
  text-decoration: none; color: inherit;
}
.group-pages a:hover {
  border-color: var(--accent); background: #f8fafd;
}
.group-pages__title {
  display: block; color: var(--accent-strong); font-weight: 600;
}
.group-pages__slug {
  display: block; color: var(--ink-soft); font-size: .82rem; margin-top: .15rem;
  font-family: var(--font-code);
}

/* --- doc page --- */
.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  gap: 0;
}
@media (max-width: 60rem) {
  .docs-layout { grid-template-columns: 1fr; }
}

.docs-sidebar {
  padding: 1.2rem 1rem;
  border-right: 1px solid var(--line);
  background: #fafbfd;
  font-size: .92rem;
  max-height: calc(100vh - 1.2rem);
  overflow-y: auto;
  position: sticky; top: 0;
  align-self: start;
}
@media (max-width: 60rem) {
  .docs-sidebar { position: static; border-right: 0; border-bottom: 1px solid var(--line); }
}

.docs-sidebar__eyebrow {
  margin: 0 0 .6rem; color: var(--gold); font-weight: 800;
  text-transform: uppercase; letter-spacing: .08em; font-size: .72rem;
}

.docs-nav { display: block; }
.docs-nav__group {
  margin-bottom: 1rem;
}
.docs-nav__group-title {
  display: block; padding: .25rem 0;
  font-weight: 700; font-size: .82rem; color: var(--ink);
  text-transform: uppercase; letter-spacing: .05em;
  text-decoration: none;
}
.docs-nav__group-title.is-active { color: var(--accent-strong); }
.docs-nav__group-title:hover { color: var(--accent-strong); }

.docs-nav__list {
  list-style: none; padding: .25rem 0 0 .8rem; margin: 0;
  border-left: 1px solid var(--line);
}
.docs-nav__list li { margin: .1rem 0; }
.docs-nav__item {
  display: block; padding: .2rem .5rem;
  color: var(--ink-soft); text-decoration: none;
  font-size: .85rem; line-height: 1.35;
  border-radius: .25rem;
}
.docs-nav__item:hover {
  color: var(--accent-strong); background: var(--paper);
}
.docs-nav__item.is-active {
  color: var(--accent-strong); background: var(--paper); font-weight: 600;
}
.docs-nav__count {
  margin: .25rem 0 0 .8rem; color: var(--ink-soft);
  font-size: .78rem; font-style: italic;
}

.docs-article {
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem);
  min-width: 0;
}

.docs-article__header {
  border-bottom: 1px solid var(--line); padding-bottom: 1.4rem; margin-bottom: 1.5rem;
}
.docs-article__header h1 {
  margin: 0 0 .35rem; font-size: clamp(1.8rem, 4vw, 2.4rem); line-height: 1.15;
}
.docs-article__source {
  margin: 0; color: var(--ink-soft); font-size: .82rem;
}
.docs-article__source code {
  background: var(--code-bg); padding: .15rem .4rem; border-radius: .25rem;
  font-size: .82rem;
}

/* TOC */
.toc {
  margin: 0 0 2rem; padding: 1rem 1.2rem;
  border: 1px solid var(--line); background: #fafbfd;
}
.toc__heading {
  margin: 0 0 .5rem; font-size: .82rem; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: .06em; font-weight: 700;
}
.toc__list { list-style: none; padding: 0; margin: 0; }
.toc__item { padding: .12rem 0; }
.toc__item--level-3 { padding-left: 1rem; }
.toc__item--level-4 { padding-left: 2rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* prose styling */
.prose { max-width: 56rem; }
.prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
  scroll-margin-top: 5rem;
}
.prose h2 { font-size: 1.6rem; margin: 2rem 0 .8rem; padding-bottom: .3rem; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 1.3rem; margin: 1.6rem 0 .6rem; }
.prose h4 { font-size: 1.1rem; margin: 1.4rem 0 .5rem; }
.prose p { margin: 0 0 1rem; }
.prose ul, .prose ol { padding-left: 1.5rem; margin: 0 0 1rem; }
.prose li { margin: .25rem 0; }
.prose code {
  background: var(--code-bg); padding: .1rem .35rem; border-radius: .25rem;
  font-size: .92em;
}
.prose pre {
  background: var(--code-bg); padding: 1rem 1.2rem; overflow-x: auto;
  border: 1px solid var(--line); border-radius: .35rem;
  font-size: .92rem; line-height: 1.5;
}
.prose pre code { background: transparent; padding: 0; font-size: inherit; }
.prose blockquote {
  margin: 0 0 1rem; padding: .5rem 1rem;
  border-left: 4px solid var(--line); color: var(--ink-soft);
  background: #fafbfd;
}
.prose table {
  width: 100%; border-collapse: collapse; margin: 0 0 1rem;
  font-size: .94rem;
}
.prose th, .prose td {
  padding: .5rem .8rem; border-bottom: 1px solid var(--line);
  text-align: left; vertical-align: top;
}
.prose th { background: var(--code-bg); font-weight: 700; }
.prose img { max-width: 100%; height: auto; }
.prose hr {
  border: 0; border-top: 1px solid var(--line); margin: 2rem 0;
}
.prose a { font-weight: 500; }

/* footer */
.site-footer {
  padding: 1rem clamp(1rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
  color: var(--ink-soft); font-size: .85rem;
}
.site-footer p { margin: 0; }