/* OpenMed documentation site
   Single stylesheet, no build step, no external fonts or CDNs.
   Light and dark themes driven by prefers-color-scheme. */

:root {
  --bg: #ffffff;
  --bg-subtle: #f7f8fa;
  --bg-inset: #eef0f4;
  --fg: #16181d;
  --fg-muted: #5a6069;
  --fg-faint: #868d97;
  --border: #e0e3e8;
  --border-strong: #c8cdd5;
  --accent: #1c5d99;
  --accent-fg: #ffffff;
  --accent-subtle: #eaf1f8;
  --warn-bg: #fdf6e7;
  --warn-border: #e8d9a8;
  --warn-fg: #6b5416;
  --code-bg: #f4f5f7;
  --radius: 6px;
  --maxw: 1180px;
  --sidebar: 236px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1116;
    --bg-subtle: #16191f;
    --bg-inset: #1c2028;
    --fg: #e6e8ec;
    --fg-muted: #a0a7b2;
    --fg-faint: #767d88;
    --border: #262b34;
    --border-strong: #363d48;
    --accent: #6aa6dd;
    --accent-fg: #0f1116;
    --accent-subtle: #16222e;
    --warn-bg: #241f14;
    --warn-border: #443a22;
    --warn-fg: #d6bd7e;
    --code-bg: #14171d;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.6) blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.brand {
  font-weight: 650;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}

.brand .mark {
  width: 20px; height: 20px;
  flex-shrink: 0;
}

.nav {
  display: flex;
  gap: 1.35rem;
  margin-left: auto;
  align-items: center;
}

.nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.2rem 0;
  border-bottom: 1.5px solid transparent;
  white-space: nowrap;
}

.nav a:hover { color: var(--fg); }
.nav a.active { color: var(--fg); border-bottom-color: var(--accent); }

.nav a.gh {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.28rem 0.7rem;
}
.nav a.gh:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- layout ---------- */

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 56px;
  padding: 2.5rem 0;
  max-height: calc(100vh - 56px);
  overflow-y: auto;
}

.sidebar h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg-faint);
  margin: 1.6rem 0 0.5rem;
  font-weight: 600;
}
.sidebar h4:first-child { margin-top: 0; }

.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin: 0; }

.sidebar a {
  display: block;
  padding: 0.28rem 0.65rem;
  margin-left: -0.65rem;
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.885rem;
  border-radius: 4px;
  border-left: 2px solid transparent;
}
.sidebar a:hover { color: var(--fg); background: var(--bg-subtle); }
.sidebar a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

main { padding: 2.5rem 0 5rem; min-width: 0; }

/* ---------- typography ---------- */

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.015em; font-weight: 640; }

h1 { font-size: 2.1rem; margin: 0 0 0.75rem; }
h2 {
  font-size: 1.4rem;
  margin: 3rem 0 0.9rem;
  padding-top: 0.4rem;
}
h3 { font-size: 1.08rem; margin: 2rem 0 0.6rem; }
h4 { font-size: 0.95rem; margin: 1.5rem 0 0.5rem; }

p { margin: 0 0 1rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

.lede {
  font-size: 1.12rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

ul, ol { margin: 0 0 1rem; padding-left: 1.35rem; }
li { margin: 0.28rem 0; }

hr { border: 0; border-top: 1px solid var(--border); margin: 2.5rem 0; }

code {
  font-family: var(--mono);
  font-size: 0.855em;
  background: var(--code-bg);
  padding: 0.14em 0.36em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.95rem 1.1rem;
  overflow-x: auto;
  font-size: 0.855rem;
  line-height: 1.6;
  margin: 0 0 1.25rem;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* ---------- hero ---------- */

.hero {
  padding: 4.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: 2.75rem;
  max-width: 20ch;
  margin-bottom: 1.1rem;
}
.hero .lede { max-width: 62ch; font-size: 1.2rem; }

.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.75rem; }

.btn {
  display: inline-block;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border-strong);
  color: var(--fg);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.btn.primary:hover { opacity: 0.9; color: var(--accent-fg); }

/* ---------- cards / grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  background: var(--bg-subtle);
}
.card h3 { margin: 0 0 0.4rem; font-size: 0.98rem; }
.card p { margin: 0; font-size: 0.9rem; color: var(--fg-muted); }
.card .num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-subtle);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  margin-bottom: 0.5rem;
}

.status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.12rem 0.45rem;
  border-radius: 3px;
  border: 1px solid var(--border-strong);
  color: var(--fg-faint);
  margin-left: 0.4rem;
  vertical-align: middle;
}
.status.built { color: var(--accent); border-color: var(--accent); }

/* ---------- tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}
th, td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-faint);
  border-bottom-color: var(--border-strong);
}
tbody tr:last-child td { border-bottom: 0; }

/* ---------- callout ---------- */

.note {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--bg-subtle);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}
.note.warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  border-left-color: var(--warn-fg);
  color: var(--warn-fg);
}
.note strong { font-weight: 640; }
.note p:last-child { margin-bottom: 0; }

/* ---------- steps ---------- */

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 2.4rem;
  margin: 0 0 1.5rem;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 0.05rem;
  width: 1.6rem; height: 1.6rem;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 3rem;
  font-size: 0.86rem;
  color: var(--fg-faint);
}
.site-footer .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}
.site-footer a { color: var(--fg-muted); }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .sidebar {
    position: static;
    max-height: none;
    padding: 1.5rem 0 0;
    border-bottom: 1px solid var(--border);
  }
  .sidebar h4 { margin-top: 1rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .hero h1 { font-size: 2.05rem; }
  .nav { gap: 0.9rem; }
  .nav a:not(.gh) { display: none; }
}