/* TLL OS Developer Hub — Global Styles */
:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --bg-hover: #1e1e2a;
  --border: #2a2a3a;
  --border-light: #3a3a4a;
  --text: #e8e8f0;
  --text-muted: #8888a0;
  --text-dim: #5a5a70;
  --accent: #6c8cff;
  --accent-hover: #8aa4ff;
  --accent-glow: rgba(108, 140, 255, 0.15);
  --green: #4ade80;
  --green-glow: rgba(74, 222, 128, 0.15);
  --orange: #fb923c;
  --red: #f87171;
  --purple: #c084fc;
  --cyan: #22d3ee;
  --radius: 8px;
  --radius-lg: 12px;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

code, pre { font-family: var(--font-mono); }
code {
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
  color: var(--cyan);
}
pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.7;
}
pre code { background: none; padding: 0; color: var(--text); }

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.nav-brand .logo {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 800; color: #fff;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 7px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
}
.nav-cta:hover { background: var(--accent-hover); }

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  position: relative;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--green);
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  position: relative;
  letter-spacing: -0.02em;
}
.hero h1 .gradient {
  background: linear-gradient(135deg, var(--accent), var(--purple), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 36px;
  position: relative;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  position: relative;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--border-light); }
.btn-agent {
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid rgba(74, 222, 128, 0.3);
}
.btn-agent:hover { background: rgba(74, 222, 128, 0.2); }

/* ===== Sections ===== */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 40px;
  max-width: 600px;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.25s;
}
.card:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
  transform: translateY(-2px);
}
.card-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.card-icon.blue { background: var(--accent-glow); color: var(--accent); }
.card-icon.green { background: var(--green-glow); color: var(--green); }
.card-icon.purple { background: rgba(192, 132, 252, 0.15); color: var(--purple); }
.card-icon.orange { background: rgba(251, 146, 60, 0.15); color: var(--orange); }
.card-icon.cyan { background: rgba(34, 211, 238, 0.15); color: var(--cyan); }
.card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 0.92rem; }

/* ===== Code Block with label ===== */
.code-block {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 20px 0;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.code-header .dots { display: flex; gap: 6px; }
.code-header .dots span {
  width: 10px; height: 10px; border-radius: 50%;
}
.code-header .dots span:nth-child(1) { background: #ff5f57; }
.code-header .dots span:nth-child(2) { background: #febc2e; }
.code-header .dots span:nth-child(3) { background: #28c840; }
.code-block pre { border: none; border-radius: 0; margin: 0; }

/* ===== Feature comparison ===== */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 30px 0;
}
.comparison-col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.comparison-col h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.comparison-col.old h4 { color: var(--text-dim); }
.comparison-col.new h4 { color: var(--green); }
.comparison-col ul { list-style: none; }
.comparison-col li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.comparison-col li:last-child { border-bottom: none; }
.comparison-col.old li::before { content: '✕'; color: var(--red); font-weight: 700; }
.comparison-col.new li::before { content: '✓'; color: var(--green); font-weight: 700; }

/* ===== Agent section ===== */
.agent-section {
  background: linear-gradient(180deg, var(--green-glow) 0%, transparent 100%);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin: 40px 0;
}
.agent-section h3 {
  color: var(--green);
  font-size: 1.4rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.agent-section p { color: var(--text-muted); margin-bottom: 20px; }
.agent-endpoints {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.agent-endpoint {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  transition: all 0.2s;
}
.agent-endpoint:hover {
  border-color: var(--green);
  background: var(--green-glow);
}
.agent-endpoint .method {
  color: var(--green);
  font-weight: 700;
  margin-right: 8px;
}
.agent-endpoint .path { color: var(--text); }
.agent-endpoint .desc { color: var(--text-dim); font-size: 0.75rem; margin-top: 4px; font-family: var(--font-sans); }

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.stat {
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat .label { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  margin-top: 60px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: 0.9rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; }
.footer-links a:hover { color: var(--text); }

/* ===== Docs layout ===== */
.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}
.docs-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}
.docs-sidebar h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 12px;
  margin-top: 20px;
}
.docs-sidebar h4:first-child { margin-top: 0; }
.docs-sidebar a {
  display: block;
  padding: 6px 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
  border-radius: 6px;
  transition: all 0.15s;
}
.docs-sidebar a:hover { background: var(--bg-hover); color: var(--text); }
.docs-sidebar a.active { background: var(--accent-glow); color: var(--accent); }
.docs-content { min-width: 0; }
.docs-content h1 { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.docs-content .doc-meta { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 32px; }
.docs-content h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.docs-content h3 { font-size: 1.1rem; font-weight: 600; margin: 24px 0 10px; }
.docs-content p { color: var(--text-muted); margin-bottom: 14px; }
.docs-content ul, .docs-content ol { margin: 12px 0 16px 24px; color: var(--text-muted); }
.docs-content li { margin-bottom: 6px; }
.docs-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.88rem;
}
.docs-content th, .docs-content td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.docs-content th { color: var(--text); font-weight: 600; background: var(--bg-card); }
.docs-content td { color: var(--text-muted); }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}
.badge.stable { background: var(--green-glow); color: var(--green); }
.badge.beta { background: rgba(251, 146, 60, 0.15); color: var(--orange); }
.badge.draft { background: var(--accent-glow); color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .comparison { grid-template-columns: 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { display: none; }
  .section-title { font-size: 1.5rem; }
}