/* PlutoPay docs — light/dark, sidebar layout. */
:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-code: #f4f5f7;
  --text: #1a1f2e;
  --text-soft: #5b6472;
  --border: #e6e8ec;
  --brand: #4f46e5;
  --brand-soft: #eef0ff;
  --accent: #0ea5a4;
  --radius: 10px;
  --sidebar-w: 268px;
  --topbar-h: 56px;
  --max: 820px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, system-ui, sans-serif;
}
:root[data-theme="dark"] {
  --bg: #0b0e16;
  --bg-soft: #11151f;
  --bg-code: #141924;
  --text: #e6e9ef;
  --text-soft: #9aa4b3;
  --border: #212636;
  --brand: #8b93ff;
  --brand-soft: #1a1f36;
  --accent: #2dd4bf;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #0b0e16; --bg-soft: #11151f; --bg-code: #141924; --text: #e6e9ef;
    --text-soft: #9aa4b3; --border: #212636; --brand: #8b93ff; --brand-soft: #1a1f36; --accent: #2dd4bf;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 15.5px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--brand); color: #fff; padding: 8px 12px; border-radius: 6px; z-index: 100; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 20; height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; background: var(--bg); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--brand); font-size: 20px; }
.brand-sub { color: var(--text-soft); font-weight: 500; }
.topbar-actions { display: flex; align-items: center; gap: 18px; }
.topbar-link { color: var(--text-soft); font-size: 14px; }
.theme-toggle { background: none; border: 1px solid var(--border); color: var(--text-soft); border-radius: 8px; width: 34px; height: 34px; cursor: pointer; font-size: 15px; }
.theme-toggle:hover { border-color: var(--brand); color: var(--brand); }

/* Layout */
.layout { display: flex; max-width: 1280px; margin: 0 auto; }
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0; padding: 24px 12px 60px 20px;
  position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h));
  overflow-y: auto; border-right: 1px solid var(--border);
}
.nav-group { margin-bottom: 22px; }
.nav-group-title { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-soft); font-weight: 700; margin: 0 0 8px 10px; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a {
  display: block; padding: 6px 10px; border-radius: 7px; color: var(--text-soft);
  font-size: 14px; line-height: 1.4;
}
.sidebar li a:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.sidebar li a.active { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.nav-reference { color: var(--accent) !important; font-weight: 600; }

.content { flex: 1; min-width: 0; padding: 40px 48px 80px; }
.prose { max-width: var(--max); }

/* Prose */
.prose h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
.prose h2 { font-size: 23px; margin: 44px 0 12px; letter-spacing: -0.01em; padding-top: 8px; }
.prose h3 { font-size: 18px; margin: 30px 0 8px; }
.prose h2 + p, .prose h1 + p { margin-top: 0; }
.prose p, .prose li { color: var(--text); }
.prose a .anchor, .anchor { color: var(--text-soft); opacity: 0; margin-left: -18px; padding-right: 6px; font-weight: 400; }
.prose h2:hover .anchor, .prose h3:hover .anchor { opacity: 0.5; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose strong { font-weight: 650; }
.prose blockquote {
  margin: 16px 0; padding: 12px 16px; border-left: 3px solid var(--brand);
  background: var(--bg-soft); border-radius: 0 8px 8px 0; color: var(--text-soft);
}
.prose blockquote p { margin: 4px 0; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }

/* Code */
.prose code { font-family: var(--mono); font-size: 0.86em; background: var(--bg-code); padding: 2px 6px; border-radius: 5px; border: 1px solid var(--border); }
.prose pre { background: var(--bg-code); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; margin: 16px 0; }
.prose pre code { background: none; border: none; padding: 0; font-size: 13px; line-height: 1.6; color: var(--text); }

/* Tables */
.prose table { border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-soft); font-weight: 650; }
.prose td code { white-space: nowrap; }

/* Landing tweaks */
.content.is-index .prose h1 { font-size: 38px; }
.page-footer { max-width: var(--max); margin-top: 60px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; gap: 20px; color: var(--text-soft); font-size: 13px; }
.page-footer a { color: var(--text-soft); }

/* Cards used on the landing (via raw HTML in markdown) */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 22px 0; }
.card { display: block; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; background: var(--bg); }
.card:hover { border-color: var(--brand); text-decoration: none; box-shadow: 0 2px 12px rgba(79,70,229,0.08); }
.card h3 { margin: 0 0 4px; font-size: 15.5px; color: var(--text); }
.card p { margin: 0; color: var(--text-soft); font-size: 13.5px; }

/* Responsive */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .content { padding: 28px 20px 60px; }
}