:root {
  --bg: #030712;
  --bg-elev: #071428;
  --bg-card: rgba(10, 20, 42, 0.85);
  --ink: #f4f7ff;
  --muted: #94a8c9;
  --line: rgba(121, 157, 230, 0.18);
  --accent: #2d6fff;
  --accent-soft: #9fc0ff;
  --cyan: #22d3ee;
  --lime: #84cc16;
  --get: #4ade80;
  --post: #60a5fa;
  --put: #fbbf24;
  --patch: #c084fc;
  --delete: #f87171;
  --sidebar-w: 260px;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 15px;
}

a { color: var(--accent-soft); text-decoration: none; }
a:hover { color: #fff; }

.doc-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

.doc-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-elev), var(--bg));
  padding: 1.5rem 0 2rem;
}

.doc-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 1.25rem 1.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1rem;
}

.doc-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  box-shadow: 0 0 20px rgba(45, 111, 255, 0.35);
}

.doc-brand strong {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.doc-brand span {
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.doc-nav { padding: 0 0.75rem; }

.doc-nav-section {
  margin: 1rem 0 0.35rem;
  padding: 0 0.5rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.doc-nav a {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  transition: background 0.15s, color 0.15s;
}

.doc-nav a:hover,
.doc-nav a.is-active {
  background: rgba(45, 111, 255, 0.12);
  color: var(--ink);
}

.doc-nav a.is-active { font-weight: 600; }

.doc-main {
  padding: 2rem 2.5rem 4rem;
  max-width: 920px;
}

.doc-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
  position: sticky;
  top: 0;
  z-index: 20;
}

.doc-topbar button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  font-family: inherit;
  cursor: pointer;
}

.doc-hero h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.doc-hero .lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 58ch;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.doc-pill {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  font-size: 0.78rem;
  color: var(--muted);
}

.doc-pill strong { color: var(--ink); }

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.35rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}

h2:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }

h3 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.05rem;
  color: var(--accent-soft);
}

h4 {
  margin: 1.25rem 0 0.35rem;
  font-size: 0.9rem;
}

p { margin: 0 0 1rem; color: #c8d4ea; }

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
  color: #c8d4ea;
}

li { margin-bottom: 0.35rem; }

.callout {
  padding: 1rem 1.15rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.callout--info { border-color: rgba(45, 111, 255, 0.35); }
.callout--warn { border-color: rgba(251, 191, 36, 0.35); }

.endpoint {
  margin: 1.5rem 0;
  padding: 1.15rem 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg-card);
}

.endpoint-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.method {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  letter-spacing: 0.04em;
}

.method--get { background: rgba(74, 222, 128, 0.15); color: var(--get); }
.method--post { background: rgba(96, 165, 250, 0.15); color: var(--post); }
.method--put { background: rgba(251, 191, 36, 0.15); color: var(--put); }
.method--patch { background: rgba(192, 132, 252, 0.15); color: var(--patch); }

.endpoint-path {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink);
  word-break: break-all;
}

.perm {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--muted);
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.endpoint p { margin: 0; font-size: 0.88rem; color: var(--muted); }

.code-block {
  position: relative;
  margin: 1rem 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #020617;
  overflow: hidden;
}

.code-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.code-block button {
  background: transparent;
  border: 0;
  color: var(--accent-soft);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
}

.code-block pre {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: #e2e8f0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.86rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

td code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
}

.flow-diagram {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.45;
  padding: 1rem;
  background: #020617;
  border-radius: 12px;
  border: 1px solid var(--line);
  overflow-x: auto;
  color: #94a8c9;
  white-space: pre;
}

@media (max-width: 900px) {
  .doc-shell { grid-template-columns: 1fr; }
  .doc-topbar { display: flex; }
  .doc-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 30;
    width: min(280px, 88vw);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
  }
  .doc-sidebar.is-open { transform: translateX(0); }
  .doc-main { padding: 1.25rem 1rem 3rem; }
  .perm { margin-left: 0; }
}