body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  color: #333;
}

.ffmi-calculator-container {
  max-width: 500px;
  margin: 40px auto;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.1);
}

.ffmi-calculator-container h1 {
  text-align: center;
  margin-bottom: 15px;
  font-size: 1.8em;
}

.ffmi-calculator-container p {
  text-align: center;
  font-size: 0.95em;
  margin-bottom: 20px;
  color: #555;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
}

button[type="submit"] {
  width: 100%;
  padding: 12px;
  background-color: #007bff; /* Adjust for your theme */
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.2s ease-in-out;
}

button[type="submit"]:hover {
  background-color: #0056b3;
}

.result-box {
  margin-top: 20px;
  padding: 15px;
  background-color: #f1f1f1;
  border-radius: 6px;
  text-align: center;
}

.result-box p {
  margin: 6px 0;
  font-size: 1.2em;
}