/* Niah Developer Docs — design system */
:root {
  --bg: #ffffff;
  --bg-subtle: #f7f8fa;
  --bg-code: #0e1116;
  --border: #e6e8ec;
  --text: #1a1d23;
  --text-muted: #5b6472;
  --text-faint: #8a93a2;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef0fe;
  --success: #0f9d58;
  --code-inline-bg: #f0f1f4;
  --sidebar-w: 264px;
  --topbar-h: 60px;
  --content-max: 820px;
  --radius: 10px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d10;
    --bg-subtle: #12151a;
    --bg-code: #05070a;
    --border: #23282f;
    --text: #e7eaf0;
    --text-muted: #a2abb9;
    --text-faint: #6b7482;
    --accent: #818cf8;
    --accent-hover: #a5b0ff;
    --accent-soft: #1a1d2e;
    --code-inline-bg: #1a1e24;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 16px); }

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

a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--accent-hover); }

/* ── Top bar ─────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.topbar .brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem; color: var(--text); letter-spacing: -0.01em;
}
.topbar .brand .logo {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 0.85rem;
}
.topbar .brand .sub { color: var(--text-faint); font-weight: 500; }
.topbar .spacer { flex: 1; }
.topbar nav { display: flex; gap: 20px; align-items: center; }
.topbar nav a { color: var(--text-muted); font-size: 0.92rem; font-weight: 500; }
.topbar nav a:hover, .topbar nav a.active { color: var(--text); }
.topbar .cta {
  padding: 7px 14px; border-radius: 8px; background: var(--accent); color: #fff !important;
  font-size: 0.9rem; font-weight: 600;
}
.topbar .cta:hover { background: var(--accent-hover); }

/* ── Layout ──────────────────────────────────────────── */
.layout { display: flex; padding-top: var(--topbar-h); }

.sidebar {
  position: fixed;
  top: var(--topbar-h); bottom: 0; left: 0;
  width: var(--sidebar-w);
  overflow-y: auto;
  padding: 28px 16px 60px 24px;
  border-right: 1px solid var(--border);
  background: var(--bg);
}
.sidebar .group { margin-bottom: 26px; }
.sidebar .group h4 {
  margin: 0 0 8px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-faint); font-weight: 700;
}
.sidebar a {
  display: block; padding: 6px 10px; border-radius: 7px; color: var(--text-muted);
  font-size: 0.92rem; font-weight: 500; margin-bottom: 1px;
}
.sidebar a:hover { background: var(--bg-subtle); color: var(--text); }
.sidebar a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  padding: 48px 48px 120px;
}
.content .inner { max-width: var(--content-max); margin: 0 auto; }

/* ── Typography ──────────────────────────────────────── */
h1 { font-size: 2.1rem; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 12px; line-height: 1.2; }
h2 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.01em; margin: 44px 0 14px; padding-top: 8px; }
h3 { font-size: 1.1rem; font-weight: 700; margin: 30px 0 10px; }
.lead { font-size: 1.15rem; color: var(--text-muted); margin: 0 0 8px; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 6px; }
hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }

/* ── Code ────────────────────────────────────────────── */
code {
  font-family: var(--font-mono); font-size: 0.86em;
  background: var(--code-inline-bg); padding: 0.12em 0.4em; border-radius: 5px;
  color: var(--text);
}
pre {
  background: var(--bg-code); color: #e6edf3; border-radius: var(--radius);
  padding: 18px 20px; overflow-x: auto; margin: 0 0 20px; font-size: 0.86rem; line-height: 1.6;
  border: 1px solid var(--border);
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.code-block { position: relative; }
.code-block .lang {
  position: absolute; top: 10px; right: 12px; font-size: 0.68rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-faint); font-family: var(--font-mono);
}

/* ── Tables ──────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; margin: 0 0 22px; font-size: 0.92rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 700; color: var(--text); background: var(--bg-subtle); }
td code { white-space: nowrap; }

/* ── Callouts ────────────────────────────────────────── */
.note {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 14px 18px; border-radius: 0 var(--radius) var(--radius) 0; margin: 0 0 22px;
  font-size: 0.94rem;
}
.note.warn { border-left-color: #e0a800; background: color-mix(in srgb, #e0a800 10%, var(--bg)); }
.note strong { color: var(--text); }

/* ── Method pills ────────────────────────────────────── */
.pill {
  display: inline-block; font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  padding: 2px 8px; border-radius: 6px; text-transform: uppercase; letter-spacing: 0.03em;
  vertical-align: middle;
}
.pill.get { background: #e3f2ff; color: #0369a1; }
.pill.post { background: #e6f6ec; color: #0f7a3d; }
.pill.put { background: #fff3e0; color: #b45309; }
.pill.delete { background: #fdecec; color: #c02626; }
.endpoint { font-family: var(--font-mono); font-size: 0.9rem; }

/* ── Cards ───────────────────────────────────────────── */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin: 24px 0; }
.card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
  background: var(--bg); transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  display: block; color: var(--text);
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); color: var(--text); }
.card h3 { margin: 0 0 6px; font-size: 1rem; }
.card p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

/* ── Hero ────────────────────────────────────────────── */
.hero { padding: 20px 0 12px; }
.hero h1 { font-size: 2.6rem; }
.hero .lead { font-size: 1.25rem; max-width: 640px; }
.hero .actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.btn {
  padding: 11px 20px; border-radius: 9px; font-weight: 600; font-size: 0.95rem;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); color: #fff; }
.btn.ghost { border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

.next {
  display: flex; justify-content: space-between; gap: 16px; margin-top: 56px;
  padding-top: 28px; border-top: 1px solid var(--border);
}
.next a { font-weight: 600; }
.next .label { display: block; font-size: 0.78rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; }

/* ── Mobile ──────────────────────────────────────────── */
.menu-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; font-size: 1.4rem; }
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.2s ease; z-index: 40; box-shadow: 0 0 40px rgba(0,0,0,0.2); }
  .sidebar.open { transform: translateX(0); }
  .content { margin-left: 0; padding: 32px 20px 100px; }
  .topbar nav { display: none; }
  .menu-toggle { display: block; }
}