/* UCP Sites - v2 Design Pass */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #080b14;
  --bg-grad-1: #0d1224;
  --bg-grad-2: #0a0e1a;
  --bg-card: #11172a;
  --bg-card-hover: #161d33;
  --bg-elevated: #1a2138;
  --border: #1e2740;
  --border-bright: #2a3656;
  --text: #e2e6f0;
  --text-dim: #7a849f;
  --text-bright: #ffffff;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #1d4ed8;
  --accent-glow: rgba(59,130,246,0.15);
  --accent-glow-strong: rgba(59,130,246,0.3);
  --green: #22c55e;
  --green-glow: rgba(34,197,94,0.15);
  --amber: #f59e0b;
  --amber-glow: rgba(245,158,11,0.15);
  --red: #ef4444;
  --purple: #a855f7;
  --purple-glow: rgba(168,85,247,0.15);
  --cyan: #06b6d4;
  --cyan-glow: rgba(6,182,212,0.15);
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', Consolas, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --max-w: 900px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent-light); text-decoration: none; transition: all 0.2s; }
a:hover { color: var(--text-bright); }

/* ---------- Nav ---------- */
nav {
  background: rgba(8,11,20,0.85);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
nav .nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
nav .brand {
  font-weight: 800;
  font-size: 18px;
  color: var(--text-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
}
nav .brand span { 
  color: var(--accent-light); 
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
}
nav .nav-links { display: flex; gap: 6px; align-items: center; }
nav .nav-links a {
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
nav .nav-links a:hover { color: var(--text); background: var(--bg-card); }
nav .nav-links a.active { color: var(--accent-light); background: var(--accent-glow); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  text-align: center;
  padding: 100px 24px 80px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}
.hero > * { position: relative; z-index: 1; }

.hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
  box-shadow: 0 0 30px var(--accent-glow);
}
.hero .hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green-glow);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: 52px;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -2px;
  margin-bottom: 24px;
  line-height: 1.1;
  background: linear-gradient(180deg, #ffffff 0%, #a0aec0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .subtitle {
  font-size: 19px;
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.6;
}
.hero .badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero .badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-dim);
  transition: all 0.2s;
}
.hero .badge:hover { border-color: var(--border-bright); transform: translateY(-1px); }
.hero .badge strong { color: var(--text-bright); font-weight: 600; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: white;
  box-shadow: 0 6px 30px var(--accent-glow-strong), inset 0 1px 0 rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border-bright);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-bright);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- Layout ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 56px 24px; }
.container-wide { max-width: 1100px; margin: 0 auto; padding: 56px 24px; }

/* ---------- Sections ---------- */
section { padding: 40px 0; }
section h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 24px;
  letter-spacing: -0.8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
section h2::before {
  content: '';
  width: 4px;
  height: 28px;
  background: linear-gradient(180deg, var(--accent), var(--purple));
  border-radius: 2px;
  flex-shrink: 0;
}
section h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-bright);
  margin: 36px 0 14px;
}
section p { margin-bottom: 16px; color: var(--text); }
section ul, section ol { margin: 16px 0 16px 24px; }
section li { margin-bottom: 8px; color: var(--text); }

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-bright), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}
.card:hover {
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.card:hover::before { opacity: 1; }
.card h3 {
  color: var(--text-bright);
  font-size: 17px;
  margin-bottom: 12px;
  font-weight: 600;
}
.card p { color: var(--text-dim); font-size: 14px; line-height: 1.6; }
.card .card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-glow), var(--purple-glow));
  border: 1px solid var(--border-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.card .card-meta {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
}
.card a.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--accent-light);
  font-weight: 600;
  font-size: 14px;
  transition: gap 0.2s;
}
.card a.card-link:hover { gap: 10px; color: var(--text-bright); }

/* ---------- Code blocks ---------- */
pre {
  background: #0a0f1c;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  margin: 18px 0;
  position: relative;
}
pre::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--purple));
  border-radius: 3px 0 0 3px;
}
pre code {
  font-family: var(--mono);
  background: none;
  padding: 0;
  color: var(--text);
}
code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-card);
  padding: 2px 7px;
  border-radius: 5px;
  color: var(--accent-light);
  border: 1px solid var(--border);
}

/* ---------- Tables ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
th {
  background: var(--bg-card);
  color: var(--text-bright);
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-bright);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-card); }

/* ---------- Callouts ---------- */
.callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 24px 0;
  position: relative;
}
.callout.info { border-left-color: var(--accent); background: linear-gradient(90deg, var(--accent-glow), transparent 40%); }
.callout.warning { border-left-color: var(--amber); background: linear-gradient(90deg, var(--amber-glow), transparent 40%); }
.callout.success { border-left-color: var(--green); background: linear-gradient(90deg, var(--green-glow), transparent 40%); }
.callout.danger { border-left-color: var(--red); }
.callout .callout-title {
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 8px;
  font-size: 14px;
}
.callout p { margin-bottom: 0; color: var(--text-dim); font-size: 14px; }
.callout pre { margin: 12px 0 0; }

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.tag-blue { background: var(--accent-glow); color: var(--accent-light); border: 1px solid rgba(59,130,246,0.3); }
.tag-green { background: var(--green-glow); color: var(--green); border: 1px solid rgba(34,197,94,0.3); }
.tag-amber { background: var(--amber-glow); color: var(--amber); border: 1px solid rgba(245,158,11,0.3); }
.tag-purple { background: var(--purple-glow); color: var(--purple); border: 1px solid rgba(168,85,247,0.3); }

/* ---------- Spec notice ---------- */
.spec-notice {
  background: linear-gradient(90deg, var(--accent-glow), transparent 50%);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius);
  padding: 14px 22px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.spec-notice strong { color: var(--accent-light); }

/* ---------- Partner marquee ---------- */
.partners {
  padding: 48px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, var(--bg-grad-1), transparent);
}
.partners h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 28px;
  font-weight: 600;
}
.partners .partner-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}
.partners .partner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  transition: all 0.2s;
}
.partners .partner:hover {
  color: var(--text-bright);
  border-color: var(--border-bright);
  transform: translateY(-1px);
}

/* ---------- Stats row ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.stat {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.stat:hover { border-color: var(--border-bright); }
.stat .stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--accent-light), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat .stat-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 6px;
  font-weight: 500;
}

/* ---------- Footer ---------- */
footer {
  background: var(--bg-grad-1);
  border-top: 1px solid var(--border);
  padding: 48px 24px 32px;
  margin-top: 80px;
  position: relative;
}
footer::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
footer .footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}
footer .footer-brand {
  font-weight: 800;
  font-size: 16px;
  color: var(--text-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
}
footer .footer-brand span { 
  color: var(--accent-light); 
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
}
footer .footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
footer .footer-links a { color: var(--text-dim); font-size: 13px; }
footer .footer-links a:hover { color: var(--text-bright); }
footer .footer-meta {
  width: 100%;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
}
footer .ecosystem-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}
footer .ecosystem-links a {
  font-size: 12px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  transition: all 0.2s;
  font-weight: 500;
}
footer .ecosystem-links a:hover { border-color: var(--accent); color: var(--accent-light); background: var(--accent-glow); }

/* ---------- Docs sidebar layout ---------- */
.docs-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
}
.docs-sidebar {
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}
.docs-sidebar h4 {
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin: 24px 0 10px;
  font-weight: 700;
}
.docs-sidebar a {
  display: block;
  color: var(--text-dim);
  font-size: 14px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
  transition: all 0.15s;
  font-weight: 500;
}
.docs-sidebar a:hover { background: var(--bg-card); color: var(--text); }
.docs-sidebar a.active { background: var(--accent-glow); color: var(--accent-light); font-weight: 600; }
.docs-content { min-width: 0; }
.docs-content h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -1px;
  margin-bottom: 20px;
}

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item:hover { border-color: var(--border-bright); }
.faq-item[open] { border-color: var(--accent); background: var(--bg-card-hover); }
.faq-item summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-bright);
  font-size: 15px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--text-dim);
  font-size: 22px;
  font-weight: 300;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { content: '\2212'; color: var(--accent-light); }
.faq-item .faq-answer { padding: 0 24px 20px; color: var(--text-dim); }

/* ---------- Tutorial steps ---------- */
.step {
  display: flex;
  gap: 20px;
  margin: 32px 0;
}
.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 4px 15px var(--accent-glow);
}
.step-content { flex: 1; }
.step-content h3 { margin-top: 6px; }

/* ---------- Flow diagram ---------- */
.flow-diagram {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 36px 0;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.flow-step {
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  min-width: 100px;
}
.flow-step.active {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent-light);
}
.flow-arrow {
  color: var(--text-dim);
  font-size: 20px;
  margin: 0 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero h1 { font-size: 34px; }
  .hero .subtitle { font-size: 17px; }
  nav .nav-links { display: none; }
  .docs-layout { grid-template-columns: 1fr; gap: 24px; }
  .docs-sidebar { position: static; max-height: none; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .flow-diagram { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
  section h2 { font-size: 24px; }
  .docs-content h1 { font-size: 28px; }
}