.peptide-calculator-wrapper {
    max-width: 600px;
    margin: 40px auto;
    font-family: Arial, sans-serif;
}

.calculator-form {
    background: #ffffff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

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

input, select, button {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
}

button {
    background: #007cba;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #005a87;
}