#construction-calculator {
  background: #fff;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  max-width: 600px;
  margin: 20px auto;
  font-family: "Poppins", sans-serif;
}
#construction-calculator h2 {
  text-align: center;
  margin-bottom: 20px;
}
#ccc-form label {
  display: block;
  font-weight: 600;
  margin-top: 10px;
}
#ccc-form select, #ccc-form input[type="radio"] {
  margin: 5px 0;
}
#calculate_cost {
  background: #0073aa;
  color: #fff;
  border: none;
  padding: 10px 15px;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 20px;
}
#ccc-result {
  margin-top: 25px;
  text-align: center;
}
.ccc-phone {
  margin-top: 15px;
  color: #d33;
  font-weight: bold;
}