:root {
  --bg: #0b0c10;
  --surface: #1a1d25;
  --surface2: #1f2433;
  --border: rgba(102,252,241,0.1);
  --primary: #66fcf1;
  --primary-dim: rgba(102,252,241,0.12);
  --primary-glow: rgba(102,252,241,0.3);
  --text: #c5c6c7;
  --text-muted: #6b7280;
  --text-heading: #ffffff;
  --orange: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  --sidebar-w: 260px;
  --font: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  background-image:
    linear-gradient(rgba(102,252,241,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102,252,241,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* Layout */
.layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  background: rgba(26,29,37,0.85);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px 20px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  border-bottom: 1px solid var(--border);
}

.logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.logo-sub { color: var(--text-muted); font-weight: 300; margin-left: 2px; }

nav { padding: 16px 0; flex: 1; }

.nav-section {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 12px 20px 4px;
}

.nav-item {
  display: block;
  padding: 8px 20px;
  color: var(--text);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 450;
  border-left: 2px solid transparent;
  transition: all 0.2s;
  cursor: pointer;
}

.nav-item:hover { color: var(--primary); background: var(--primary-dim); }
.nav-item.active { color: var(--primary); border-left-color: var(--primary); background: var(--primary-dim); }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.version-badge {
  font-size: 11px;
  font-family: var(--mono);
  background: var(--primary-dim);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.gh-link {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.gh-link:hover { color: var(--primary); }

/* Main content */
.content {
  margin-left: var(--sidebar-w);
  flex: 1;
  max-width: 900px;
  padding: 0 48px 80px;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  background: rgba(11,12,16,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

#search {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  width: 260px;
  outline: none;
  transition: border-color 0.2s;
}
#search:focus { border-color: var(--primary); }
#search::placeholder { color: var(--text-muted); }

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-family: var(--mono);
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
}

.pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}

/* Pages */
.page { display: none; animation: fadeIn 0.3s ease; }
.page.active { display: block; }

/* Typography */
h1 { font-size: 32px; font-weight: 700; color: var(--text-heading); margin-bottom: 16px; }
h2 { font-size: 20px; font-weight: 600; color: var(--text-heading); margin: 36px 0 12px; }
h3 { font-size: 16px; font-weight: 600; color: var(--text-heading); margin-bottom: 8px; }
p  { line-height: 1.7; margin-bottom: 16px; }
.lead { font-size: 16px; color: var(--text); line-height: 1.8; margin-bottom: 32px; }
a  { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 12.5px; background: var(--surface2); padding: 2px 6px; border-radius: 4px; color: var(--primary); }

/* Hero */
.hero { margin-bottom: 48px; }
.hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 20px;
}
.hero h1 { font-size: 40px; line-height: 1.2; margin-bottom: 16px; }
.hero-sub { font-size: 16px; color: var(--text); line-height: 1.8; max-width: 680px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 12px; }
.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #0b0c10;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); text-decoration: none; }
.btn-ghost {
  display: inline-block;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}
.card:hover { border-color: var(--primary-glow); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.4); }
.card:hover::before { opacity: 1; }
.card-icon { font-size: 24px; margin-bottom: 12px; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 13px; color: var(--text-muted); margin: 0; line-height: 1.6; }

/* Architecture diagram */
.arch-diagram { display: flex; flex-direction: column; gap: 12px; margin: 24px 0; }
.arch-layer { border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.rust-layer { border-color: rgba(251,146,60,0.3); }
.go-layer { border-color: rgba(96,165,250,0.3); }
.proto-layer { border-color: var(--border); }
.layer-label { font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 12px; }
.arch-boxes { display: flex; gap: 8px; flex-wrap: wrap; }
.arch-box { background: var(--surface2); border: 1px solid var(--border); border-radius: 6px; padding: 8px 14px; font-size: 13px; font-family: var(--mono); }
.layer-arrow { text-align: center; margin-top: 12px; font-size: 12px; color: var(--primary); font-family: var(--mono); }

/* Endpoint card */
.endpoint-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; margin-bottom: 32px; }
.endpoint-row { display: flex; align-items: center; gap: 12px; padding: 6px 0; }

/* Badges */
.badge { font-size: 10px; font-weight: 700; letter-spacing: 1px; padding: 3px 8px; border-radius: 4px; text-transform: uppercase; flex-shrink: 0; }
.badge-blue { background: rgba(96,165,250,0.15); color: #60a5fa; border: 1px solid rgba(96,165,250,0.3); }
.badge-teal { background: var(--primary-dim); color: var(--primary); border: 1px solid var(--border); }
.badge-orange { background: rgba(245,158,11,0.15); color: var(--orange); border: 1px solid rgba(245,158,11,0.3); }

/* Type grid */
.type-grid { display: flex; flex-direction: column; gap: 16px; margin: 24px 0; }
.type-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.type-name { padding: 12px 16px; font-family: var(--mono); font-size: 14px; font-weight: 600; color: var(--primary); border-bottom: 1px solid var(--border); }

/* Tables */
.field-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.field-table th { padding: 10px 16px; text-align: left; font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); border-bottom: 1px solid var(--border); background: var(--surface2); }
.field-table td { padding: 10px 16px; border-bottom: 1px solid rgba(255,255,255,0.04); vertical-align: top; line-height: 1.6; }
.field-table tr:last-child td { border-bottom: none; }
.wide-table { margin: 16px 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }

/* API method blocks */
.api-method { border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 24px; background: var(--surface); }
.method-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.method-name { font-family: var(--mono); font-size: 16px; font-weight: 600; color: var(--text-heading); }
.response-label { font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); margin: 16px 0 8px; }
.var-block { margin: 12px 0; }
.var-label { font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.curl-block { margin-top: 16px; }

/* Code blocks */
pre { border-radius: 8px; overflow-x: auto; margin: 12px 0; font-size: 13px; }
pre code { font-size: 13px !important; }
.hljs { background: #1a1d25 !important; border: 1px solid var(--border); border-radius: 8px; padding: 16px !important; }

/* Info / warning boxes */
.info-box { background: rgba(102,252,241,0.05); border: 1px solid var(--border); border-left: 3px solid var(--primary); border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 16px 0; }
.warning-box { background: rgba(245,158,11,0.07); border: 1px solid rgba(245,158,11,0.25); border-left: 3px solid var(--orange); border-radius: 0 8px 8px 0; padding: 14px 18px; margin-bottom: 24px; font-size: 14px; }
.info-box ul { margin: 12px 0 0 16px; }
.info-box li { margin-bottom: 6px; font-size: 13px; line-height: 1.6; }

/* Steps */
.steps { display: flex; flex-direction: column; gap: 0; margin: 24px 0; }
.step { display: flex; gap: 20px; padding-bottom: 32px; position: relative; }
.step:not(:last-child)::before { content: ''; position: absolute; left: 19px; top: 44px; bottom: 0; width: 1px; background: var(--border); }
.step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--primary-dim); border: 1px solid var(--primary); color: var(--primary); font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 15px; }
.step-body { flex: 1; padding-top: 8px; }
.step-body h3 { margin-bottom: 12px; }

/* Proto signing box */
.signing-box { background: var(--surface); border: 1px solid var(--primary-glow); border-radius: 10px; padding: 20px 24px; margin: 16px 0; }
.signing-title { font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--primary); margin-bottom: 12px; }
.signing-box ul { margin: 12px 0 0 16px; }
.signing-box li { margin-bottom: 8px; font-size: 13px; line-height: 1.6; }

/* Search highlight */
.highlight-match { background: rgba(102,252,241,0.25); border-radius: 2px; }

/* Animations */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(102,252,241,0.6); }
  70% { box-shadow: 0 0 0 8px rgba(102,252,241,0); }
  100% { box-shadow: 0 0 0 0 rgba(102,252,241,0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .content { margin-left: 0; padding: 0 20px 60px; }
  .card-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}