:root {
  --brand: #F97316;
  --brand-dim: #C2570A;
  --brand-glow: rgba(249,115,22,0.12);
  --dark: #0A0A0B;
  --surface: #111113;
  --surface2: #18181B;
  --surface3: #222226;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --text: #F4F4F5;
  --muted: #A1A1AA;
  --muted2: #71717A;
  --green: #22C55E;
  --blue: #60A5FA;
  --purple: #A78BFA;
  --red: #F87171;
  --yellow: #FBBF24;
  --radius: 10px;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'DM Sans', sans-serif;
  --display: 'Syne', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--dark);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.logo-wrap {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.logo-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.logo-text {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.logo-badge {
  font-family: var(--mono);
  font-size: 10px;
  background: var(--brand-glow);
  color: var(--brand);
  border: 1px solid rgba(249,115,22,0.3);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
}

.nav-section {
  padding: 16px 12px 8px;
}

.nav-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted2);
  padding: 0 8px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 7px;
  text-decoration: none;
  color: var(--muted);
  font-size: 13.5px;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover { color: var(--text); background: var(--surface2); }
.nav-item.active { color: var(--brand); background: var(--brand-glow); }

.nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-get { background: var(--green); }
.dot-post { background: var(--blue); }
.dot-delete { background: var(--red); }
.dot-put { background: var(--yellow); }
.dot-info { background: var(--muted2); }

.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted2);
}

.sidebar-footer a { color: var(--brand); text-decoration: none; }

/* Main content */
.main {
  flex: 1;
  overflow-x: hidden;
  min-width: 0;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10,10,11,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 12px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
}

.topbar-sep { color: var(--muted2); }

.search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 7px 12px;
  width: 220px;
  color: var(--muted2);
  font-size: 13px;
}

.search-wrap svg { width: 14px; height: 14px; flex-shrink: 0; }

.topbar-right { display: flex; align-items: center; gap: 10px; }

.btn-sm {
  padding: 6px 14px;
  border-radius: 7px;
  font-size: 13px;
  font-family: var(--sans);
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border2); }
.btn-ghost:hover { color: var(--text); border-color: var(--brand); }
.btn-brand { background: var(--brand); color: white; font-weight: 500; }
.btn-brand:hover { background: var(--brand-dim); }

/* Content area */
.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* Hero section */
.hero { margin-bottom: 56px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--brand);
  background: var(--brand-glow);
  border: 1px solid rgba(249,115,22,0.25);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--display);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.hero h1 span { color: var(--brand); }

.hero p {
  font-size: 16px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-hero {
  padding: 11px 22px;
  border-radius: 9px;
  font-size: 14px;
  font-family: var(--sans);
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-hero-primary { background: var(--brand); color: white; }
.btn-hero-primary:hover { background: var(--brand-dim); transform: translateY(-1px); }
.btn-hero-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border2); }
.btn-hero-secondary:hover { border-color: var(--brand); }

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 56px;
}

.stat-cell {
  background: var(--surface);
  padding: 20px 24px;
  text-align: center;
}

.stat-num {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 700;
  color: var(--brand);
  display: block;
}

.stat-lbl {
  font-size: 12px;
  color: var(--muted2);
  margin-top: 2px;
  display: block;
}

/* Section headers */
.section {
  margin-bottom: 52px;
  scroll-margin-top: 72px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.section-icon {
  width: 34px;
  height: 34px;
  background: var(--brand-glow);
  border: 1px solid rgba(249,115,22,0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  flex-shrink: 0;
}

.section-icon svg { width: 16px; height: 16px; }

.section-title {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
}

.section-anchor {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted2);
  margin-left: auto;
}

/* Info blocks */
.info-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.info-block.warning {
  border-color: rgba(251,191,36,0.3);
  background: rgba(251,191,36,0.04);
}

.info-block.tip {
  border-color: rgba(34,197,94,0.3);
  background: rgba(34,197,94,0.04);
}

.info-block.info {
  border-color: rgba(96,165,250,0.3);
  background: rgba(96,165,250,0.04);
}

.info-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-block.warning .info-label { color: var(--yellow); }
.info-block.tip .info-label { color: var(--green); }
.info-block.info .info-label { color: var(--blue); }

.info-block p { color: var(--muted); font-size: 14px; }
.info-block code { font-family: var(--mono); font-size: 13px; color: var(--brand); background: var(--surface3); padding: 1px 5px; border-radius: 4px; }

/* Base URL display */
.base-url {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 14px;
}

.base-url-label {
  font-size: 11px;
  color: var(--muted2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.base-url-val { color: var(--text); flex: 1; }
.base-url-val span { color: var(--brand); }

.copy-btn {
  background: var(--surface3);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-family: var(--mono);
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}

.copy-btn:hover { color: var(--text); border-color: var(--border2); }

/* Auth key display */
.auth-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  align-items: start;
}

.auth-key {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--purple);
}

.auth-val { font-size: 13.5px; color: var(--muted); }
.auth-val strong { color: var(--text); font-weight: 500; }
.auth-val code { font-family: var(--mono); font-size: 12.5px; color: var(--brand); background: var(--surface3); padding: 2px 6px; border-radius: 4px; }

/* Endpoint card */
.endpoint {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.15s;
}

.endpoint:hover { border-color: var(--border2); }

.endpoint-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
}

.method-badge {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 5px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
  min-width: 52px;
  text-align: center;
}

.method-get    { background: rgba(34,197,94,0.12);  color: var(--green);  border: 1px solid rgba(34,197,94,0.2); }
.method-post   { background: rgba(96,165,250,0.12);  color: var(--blue);   border: 1px solid rgba(96,165,250,0.2); }
.method-delete { background: rgba(248,113,113,0.12); color: var(--red);    border: 1px solid rgba(248,113,113,0.2); }
.method-put    { background: rgba(251,191,36,0.12);  color: var(--yellow); border: 1px solid rgba(251,191,36,0.2); }

.endpoint-path { font-family: var(--mono); font-size: 13.5px; color: var(--text); flex: 1; }
.endpoint-path span { color: var(--brand); }

.endpoint-desc {
  font-size: 13px;
  color: var(--muted2);
  margin-left: auto;
  max-width: 240px;
  text-align: right;
}

.endpoint-arrow { color: var(--muted2); transition: transform 0.2s; flex-shrink: 0; }
.endpoint.open .endpoint-arrow { transform: rotate(180deg); }

.endpoint-body { display: none; border-top: 1px solid var(--border); padding: 0; }
.endpoint.open .endpoint-body { display: block; }

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  gap: 0;
}

.tab {
  font-family: var(--mono);
  font-size: 12px;
  padding: 10px 14px;
  cursor: pointer;
  color: var(--muted2);
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}

.tab:hover { color: var(--muted); }
.tab.active { color: var(--brand); border-bottom-color: var(--brand); }

.tab-content { display: none; padding: 20px; }
.tab-content.active { display: block; }

/* Code block */
.code-block {
  background: var(--dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 12px;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.code-lang {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted2);
  letter-spacing: 0.05em;
}

.code-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted2);
  background: none;
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.code-copy:hover { color: var(--text); }

pre {
  padding: 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

pre::-webkit-scrollbar { height: 4px; }
pre::-webkit-scrollbar-track { background: transparent; }
pre::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.t-key     { color: var(--purple); }
.t-str     { color: var(--green); }
.t-num     { color: var(--yellow); }
.t-comment { color: var(--muted2); font-style: italic; }
.t-brand   { color: var(--brand); }
.t-blue    { color: var(--blue); }
.t-red     { color: var(--red); }

/* Params table */
.params-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }

.params-table th {
  text-align: left;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted2);
  border-bottom: 1px solid var(--border);
}

.params-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: top;
}

.params-table tr:last-child td { border-bottom: none; }

.param-name { font-family: var(--mono); font-size: 13px; color: var(--text); }
.param-type { font-family: var(--mono); font-size: 11px; color: var(--blue); }
.param-req  { font-family: var(--mono); font-size: 11px; }
.param-req.req { color: var(--brand); }
.param-req.opt { color: var(--muted2); }
.param-desc { color: var(--muted); font-size: 13px; line-height: 1.5; }

/* Response block */
.response-block { margin-top: 0; }

.res-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.res-200 { background: rgba(34,197,94,0.1);  color: var(--green);  border: 1px solid rgba(34,197,94,0.2); }
.res-400 { background: rgba(248,113,113,0.1); color: var(--red);    border: 1px solid rgba(248,113,113,0.2); }
.res-401 { background: rgba(251,191,36,0.1);  color: var(--yellow); border: 1px solid rgba(251,191,36,0.2); }

/* Error codes table */
.errors-grid { display: grid; gap: 10px; margin-top: 4px; }

.error-row {
  display: grid;
  grid-template-columns: 70px 160px 1fr;
  gap: 16px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 13.5px;
}

.error-code { font-family: var(--mono); font-size: 13px; color: var(--red); }
.error-name { font-family: var(--mono); font-size: 12px; color: var(--muted2); }
.error-desc { color: var(--muted); }

/* Crypto list */
.crypto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 4px;
}

.crypto-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.crypto-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  flex-shrink: 0;
}

.crypto-info  { min-width: 0; }
.crypto-sym   { font-family: var(--display); font-size: 13px; font-weight: 600; color: var(--text); }
.crypto-name  { font-size: 11px; color: var(--muted2); }

.ic-btc  { background: rgba(247,147,26,0.15);  color: #F7931A; }
.ic-eth  { background: rgba(98,126,234,0.15);   color: #627EEA; }
.ic-usdt { background: rgba(38,161,123,0.15);   color: #26A17B; }
.ic-usdc { background: rgba(0,100,220,0.15);    color: #0064DC; }
.ic-bnb  { background: rgba(243,186,47,0.15);   color: #F3BA2F; }
.ic-ltc  { background: rgba(189,189,189,0.15);  color: #BFBBBB; }
.ic-trx  { background: rgba(235,0,27,0.15);     color: #EB001B; }
.ic-ton  { background: rgba(10,110,195,0.15);   color: #0A6EC3; }

/* Webhook section */
.webhook-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.wf-step   { background: var(--surface); padding: 20px; position: relative; }
.wf-num    { font-family: var(--mono); font-size: 11px; color: var(--brand); margin-bottom: 8px; }
.wf-title  { font-family: var(--display); font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.wf-desc   { font-size: 12.5px; color: var(--muted2); line-height: 1.5; }

/* SDK cards */
.sdk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.sdk-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sdk-card:hover { border-color: var(--brand); transform: translateY(-2px); }

.sdk-icon    { font-family: var(--mono); font-size: 22px; margin-bottom: 2px; }
.sdk-name    { font-family: var(--display); font-size: 15px; font-weight: 600; color: var(--text); }
.sdk-pkg     { font-family: var(--mono); font-size: 11px; color: var(--muted2); }
.sdk-install { font-family: var(--mono); font-size: 12px; color: var(--brand); background: var(--brand-glow); border-radius: 5px; padding: 6px 10px; margin-top: 4px; }

/* Divider */
.divider { border: none; border-top: 1px solid var(--border); margin: 36px 0; }

/* Inline code */
code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--brand);
  background: var(--surface3);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Scroll behavior */
html { scroll-behavior: smooth; }

/* HMAC section */
.hmac-steps { counter-reset: step; display: grid; gap: 12px; }

.hmac-step { display: flex; gap: 14px; align-items: start; }

.hmac-step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--brand-glow);
  border: 1px solid rgba(249,115,22,0.3);
  color: var(--brand);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 3px;
}

.hmac-step-content { flex: 1; font-size: 14px; color: var(--muted); line-height: 1.6; }
.hmac-step-content strong { color: var(--text); font-weight: 500; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { padding: 24px 20px 60px; }
  .topbar { padding: 12px 20px; }
  .stats-bar { grid-template-columns: repeat(2,1fr); }
  .sdk-grid { grid-template-columns: 1fr 1fr; }
  .webhook-flow { grid-template-columns: 1fr; }
  .auth-row { grid-template-columns: 1fr; }
  .error-row { grid-template-columns: 1fr; gap: 4px; }
}