:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --primary-dark: #172554;
  --accent: #06b6d4;
  --accent-hover: #0891b2;
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --card-bg: rgba(255, 255, 255, 0.95);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --border: #e2e8f0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--surface-alt);
  line-height: 1.6;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
}

/* Header & Nav */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: #cbd5e1;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--text-light);
}

.btn-nav {
  background: var(--accent);
  color: #0f172a;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.btn-nav:hover {
  background: var(--accent-hover);
  color: #ffffff;
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  background: var(--bg-gradient);
  color: var(--text-light);
  padding: 5rem 1.5rem 6rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
  transform: translateX(-50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #93c5fd;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.hero h1 span {
  background: linear-gradient(135deg, #60a5fa, #22d3ee);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: #94a3b8;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #0284c7);
  color: #ffffff;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
  transition: all 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Features Grid */
.section {
  padding: 5rem 1.5rem;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: #eff6ff;
  color: #2563eb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Privacy Callout */
.privacy-banner {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: var(--text-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.privacy-banner h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #38bdf8;
}

.privacy-banner p {
  color: #cbd5e1;
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Documentation Layout */
.docs-layout {
  display: flex;
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  gap: 3rem;
}

.docs-sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  top: 5rem;
  align-self: flex-start;
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.docs-sidebar h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.docs-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.docs-nav a {
  display: block;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  color: #475569;
  font-size: 0.95rem;
  font-weight: 500;
}

.docs-nav a:hover {
  background: #eff6ff;
  color: var(--primary-light);
}

.docs-content {
  flex-grow: 1;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 3rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.docs-content h1 {
  font-size: 2.25rem;
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

.docs-content h2 {
  font-size: 1.6rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #f1f5f9;
  color: var(--text-main);
}

.docs-content h3 {
  font-size: 1.25rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.docs-content p, .docs-content ul, .docs-content ol {
  margin-bottom: 1.25rem;
  color: #334155;
  line-height: 1.7;
}

.docs-content ul, .docs-content ol {
  padding-left: 1.5rem;
}

.docs-content code {
  background: #f1f5f9;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.alert-box {
  background: #eff6ff;
  border-left: 4px solid var(--primary-light);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: #1e3a8a;
}

/* Footer */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 4rem 1.5rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--text-light);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }
  .docs-layout {
    flex-direction: column;
  }
  .docs-sidebar {
    width: 100%;
    position: static;
  }
}