:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #121826;
  --bg-card: #1a2236;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --border: #26324b;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-btn {
  background: var(--bg-card);
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 9999px;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  line-height: 1.2;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #030712;
}

.btn-primary:hover {
  background: #7dd3fc;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: var(--bg-card);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Grid & Cards */
.grid {
  display: grid;
  gap: 24px;
}

.cards-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.4);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Code box */
.code-box {
  max-width: 720px;
  margin: 0 auto;
  background: #05080e;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: #0f172a;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.code-tag {
  background: #1e293b;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

pre {
  padding: 20px;
  overflow-x: auto;
  font-family: "JetBrains Mono", Consolas, Monaco, monospace;
  font-size: 0.9rem;
  color: #38bdf8;
  line-height: 1.5;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  text-align: center;
}

.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 20px;
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 6px;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-right a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-right a:hover {
  color: var(--accent);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
}

/* Error page */
.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.error-box {
  text-align: center;
  padding: 40px;
}

.error-code {
  font-size: 6rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-box h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.error-box p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}