body {
  background-color: #f4f6f9;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.form-container {
  max-width: 500px;
  background: #fff;
  padding: 30px;
  margin: 50px auto;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}

.form-container h2 {
  text-align: center;
  margin-bottom: 25px;
  color: #333;
}

.form-control:focus,
.form-select:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

.btn-primary {
  width: 100%;
  transition: background-color 0.3s ease;
}

.btn-primary:hover {
  background-color: #0056b3;
}

#mensagem {
  text-align: center;
}