:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-secondary: #0f172a;
  --color-accent: #06b6d4;
  --color-success: #10b981;
  --color-bg: #000000;
  --color-bg-alt: #0a0a0f;
  --color-surface: #111118;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: #1e293b;
  --font-sans: 'Inter', -apple-system, sans-serif;
  --max-width: 1200px;
  --gradient: linear-gradient(135deg, #6366f1, #06b6d4);
}

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

html { scroll-behavior: smooth; }

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

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

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.logo .accent {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.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-primary, .btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  border: none;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Code Block */
.code-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-title {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.code-block pre {
  padding: 1.5rem;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.7;
}

.code-block code {
  font-family: 'JetBrains Mono', monospace;
}

.code-block .kw { color: #c792ea; }
.code-block .str { color: #c3e88d; }
.code-block .comment { color: #546e7a; }

/* Features */
.features {
  padding: 6rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.2s;
}

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

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* API Section */
.api-section {
  padding: 6rem 2rem;
  background: var(--color-bg-alt);
}

.api-section .section-header {
  max-width: var(--max-width);
  margin: 0 auto 4rem;
}

.api-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.api-request, .api-response {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.api-request h4, .api-response h4 {
  padding: 1rem 1.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 600;
}

.api-request pre, .api-response pre {
  padding: 1.5rem;
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
}

.api-cta {
  text-align: center;
  margin-top: 3rem;
}

/* CTA Section */
.cta-section {
  padding: 6rem 2rem;
  text-align: center;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

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

/* Footer */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 4rem;
}

.footer-brand p {
  color: var(--color-text-muted);
  margin-top: 1rem;
  font-size: 0.9rem;
}

.footer-brand .patent {
  font-size: 0.8rem;
  color: var(--color-primary);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 3rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 968px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 6rem;
  }

  .hero-subtitle {
    margin: 0 auto 2rem;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

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

  .api-demo {
    grid-template-columns: 1fr;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .nav-links a:not(.btn-primary):not(.btn-outline) {
    display: none;
  }
}