body {
  background-color: #f4f6f9;
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
}

.welcome-box {
  max-width: 700px;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

h1 {
  font-weight: bold;
  color: #2c3e50;
}

.btn-primary {
  background-color: #3498db;
  border: none;
}

.btn-primary:hover {
  background-color: #2980b9;
}
.mobile-toggle {
  display: none;
  font-size: 20px;
  padding: 10px 15px;
  background-color: #3498db;
  color: white;
  text-align: center;
  border-radius: 6px;
  margin-bottom: 15px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }

  .nav {
    display: none;
    flex-direction: column;
    gap: 10px;
  }

  .nav.show {
    display: flex;
  }

  .nav .btn {
    width: 100%;
    text-align: center;
  }
}