.bscp-calculator {
  border: 1px solid #ccc;
  padding: 15px;
  max-width: 350px;
  margin: 20px auto;
  border-radius: 8px;
  background: #fafafa;
}

.bscp-calculator h3 {
  text-align: center;
  margin-bottom: 10px;
}

.bscp-calculator input, .bscp-calculator select {
  width: 90%;
  padding: 8px;
  margin-bottom: 10px;
}

.bscp-calculator button {
  width: 100%;
  background: #0073aa;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 10px;
  cursor: pointer;
}

#bscp_result {
  margin-top: 15px;
  text-align: center;
  font-size: 1.05em;
}