:root {
  --color-bg: #0a0a0b;
  --color-surface: #111113;
  --color-surface-elevated: #18181b;
  --color-border: #27272a;
  --color-text: #fafafa;
  --color-text-muted: #a1a1aa;
  --color-primary: #ef4444;
  --color-primary-hover: #dc2626;
  --color-accent: #f97316;
  --color-success: #22c55e;
  --color-code-bg: #18181b;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --container-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
}

.btn-outline:hover {
  background: var(--color-surface-elevated);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(239, 68, 68, 0.15) 0%, transparent 50%),
    var(--color-bg);
}

.hero-content {
  max-width: 800px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
}

.hero-code {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 32px;
  display: inline-block;
}

.hero-code pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  text-align: left;
}

/* Section styling */
section {
  padding: 120px 0;
}

section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 64px;
}

/* Features */
.features {
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

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

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

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

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Comparison Table */
.comparison {
  background: var(--color-bg);
}

.table-wrapper {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-surface-elevated);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.comparison-table th.highlight {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-primary);
}

.comparison-table td.highlight {
  background: rgba(239, 68, 68, 0.05);
}

.comparison-table .yes {
  color: var(--color-success);
  font-weight: 600;
}

.comparison-table .no {
  color: var(--color-text-muted);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* Code Examples */
.code-examples {
  background: var(--color-surface);
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.code-block {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.code-header {
  padding: 12px 20px;
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
}

.code-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.code-block pre {
  padding: 20px;
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Syntax highlighting */
.comment { color: #6b7280; }
.keyword { color: #f472b6; }
.class { color: #38bdf8; }
.method { color: #a78bfa; }
.string { color: #34d399; }
.symbol { color: #fb923c; }
.number { color: #fbbf24; }
.tag { color: #f472b6; }

/* CTA */
.cta {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(239, 68, 68, 0.15) 0%, transparent 50%),
    var(--color-bg);
  text-align: center;
  padding: 120px 0;
}

.cta h2 {
  margin-bottom: 16px;
}

.cta p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  justify-content: center;
}

/* Footer */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.footer p a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer p a:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

/* Customization Section */
.customization {
  background: var(--color-bg);
}

.code-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.variable { color: #60a5fa; }

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-code {
    width: 100%;
  }

  section {
    padding: 80px 0;
  }

  section h2 {
    font-size: 2rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .code-grid,
  .code-grid-2 {
    grid-template-columns: 1fr;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 16px;
    font-size: 0.85rem;
  }
}