:root {
  --primary: #4f46e5;
  --secondary: #0ea5e9;
  --bg: #0f172a;
  --text: #e2e8f0;
  --card: #1e293b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  background: rgba(15, 23, 42, 0.9);
  position: sticky;
  top: 0;
}

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

.nav a {
  margin-left: 20px;
  text-decoration: none;
  color: var(--text);
  transition: 0.3s;
}

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

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero p {
  max-width: 600px;
  margin-bottom: 30px;
  color: #94a3b8;
}

.btn {
  padding: 12px 24px;
  border: none;
  background: var(--primary);
  color: white;
  cursor: pointer;
  border-radius: 8px;
  transition: 0.3s;
}

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

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  padding: 60px;
}

.card {
  background: var(--card);
  padding: 20px;
  border-radius: 12px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  margin-bottom: 10px;
  color: var(--secondary);
}

/* Footer */
.footer {
  text-align: center;
  padding: 20px;
  border-top: 1px solid #334155;
  margin-top: 40px;
  color: #64748b;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
  }

  .nav {
    margin-top: 10px;
  }

  .hero h2 {
    font-size: 2rem;
  }
}