:root {
  --primary: #0077cc;
  --secondary: #00c896;
  --light: #f9f9f9;
  --dark: #333;
}

body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: var(--light);
  color: var(--dark);
}

.container {
  max-width: 1140px;
  margin: auto;
  padding: 1rem;
}

header {
  background: var(--primary);
  color: white;
  padding-bottom: 3rem;
}

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

.nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
}

.nav a {
  color: white;
  text-decoration: none;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.hero {
  text-align: center;
  margin-top: 2rem;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.btn {
  background: var(--secondary);
  color: white;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.card {
  background: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.demo {
  background: #eef7ff;
  text-align: center;
  padding: 3rem 1rem;
}

.contact {
  background: white;
  margin-top: 3rem;
  padding: 2rem;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact input, .contact textarea {
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.contact button {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.8rem;
  font-weight: bold;
  cursor: pointer;
}

footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}

/* Media Queries */
@media screen and (max-width: 768px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

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

  .feature-box {
    width: 100%;
  }

  .contact form {
    width: 100%;
    padding: 0;
  }
}

@media screen and (max-width: 480px) {
  .btn, .hero .btn {
    width: 100%;
    text-align: center;
  }

  h1, h2 {
    font-size: 1.4rem;
  }

  .price {
    font-size: 1.4rem;
  }
}