:root {
  --bg: #f6f8fb;
  --ink: #111827;
  --muted: #64748b;
  --panel: #ffffff;
  --line: #e5e7eb;
  --brand: #0f766e;
  --dark: #0b1220;
  --code: #e2e8f0;
}

* { box-sizing: border-box; }

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

.hero {
  background: linear-gradient(135deg, #0f172a, #0f766e);
  color: #fff;
  padding: 48px 60px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 38px;
}

.hero p {
  max-width: 900px;
  color: #dbeafe;
}

.badge {
  display: inline-block;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
}

.layout {
  display: flex;
  max-width: 1440px;
  margin: 0 auto;
}

nav {
  width: 280px;
  flex: 0 0 280px;
  background: #fff;
  border-right: 1px solid var(--line);
  height: 100vh;
  position: sticky;
  top: 0;
  padding: 24px;
  overflow-y: auto;
}

nav h3 {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 13px;
}

nav a {
  display: block;
  color: #334155;
  text-decoration: none;
  padding: 7px 0;
}

nav a:hover,
nav a.active {
  color: var(--brand);
  font-weight: 700;
}

main {
  flex: 1;
  background: #fff;
  padding: 36px 52px;
}

section {
  margin-bottom: 46px;
}

h2 {
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

h3 {
  margin-top: 26px;
}

.endpoint {
  font-family: Consolas, Monaco, "Courier New", monospace;
  color: var(--brand);
  font-weight: 700;
}

.note {
  background: #ecfdf5;
  border-left: 4px solid var(--brand);
  padding: 14px 18px;
  margin: 18px 0;
}

code {
  font-family: Consolas, Monaco, "Courier New", monospace;
}

p code,
li code,
td code {
  background: #f1f5f9;
  padding: 2px 5px;
  border-radius: 4px;
}

pre {
  background: var(--dark);
  color: var(--code);
  padding: 20px;
  border-radius: 10px;
  overflow-x: auto;
  line-height: 1.55;
  border: 1px solid #1e293b;
  position: relative;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.code-wrap {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #111827;
  color: #cbd5e1;
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 5px 9px;
  cursor: pointer;
}

.copy-btn.copied {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
}

th, td {
  border: 1px solid var(--line);
  text-align: left;
  padding: 11px;
  vertical-align: top;
}

th {
  background: #f8fafc;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 30px;
}

@media (max-width: 900px) {
  .layout { flex-direction: column; }
  nav {
    width: auto;
    height: auto;
    position: relative;
    flex: auto;
  }
  main { padding: 24px; }
  .hero { padding: 32px 24px; }
}