body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background-color: #0d1117;
  color: #f5f5f5;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 50px;
  background-color: #161b22;
  position: sticky;
  top: 0;
  z-index: 10;
}

.navbar img {
  height: 40px;
}

.menu {
  list-style: none;
  display: flex;
  gap: 20px;
}

.menu a {
  text-decoration: none;
  color: #f5f5f5;
  font-weight: 500;
  transition: color 0.3s ease;
}

.menu a:hover {
  color: #00aaff;
}

.hero {
  background: linear-gradient(to right, #007bff, #001f3f);
  text-align: center;
  padding: 120px 20px;
}

.hero h1 {
  font-size: 2.8em;
}

.hero p {
  font-size: 1.2em;
  margin: 20px 0;
}

.btn {
  background-color: #00aaff;
  padding: 12px 30px;
  color: white;
  border-radius: 25px;
  text-decoration: none;
}

.services, .plans, .contact {
  text-align: center;
  padding: 60px 20px;
}

.cards, .plan-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.card, .plan {
  background-color: #161b22;
  border-radius: 10px;
  padding: 25px;
  width: 250px;
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
}

.card:hover, .plan:hover {
  background-color: #002b5b;
}

footer {
  background-color: #000;
  color: #aaa;
  text-align: center;
  padding: 20px;
}