.frcc-calculator {
    border: 1px solid #ddd;
    padding: 20px;
    max-width: 500px;
    margin: 20px auto;
    background: #f2f7ff;
    border-radius: 12px;
    font-family: Tahoma, sans-serif;
}
.frcc-calculator h3 {
    text-align: center;
    color: #004080;
}
.frcc-calculator label {
    display: block;
    margin-bottom: 12px;
}
.frcc-calculator input, .frcc-calculator select {
    width: 100%;
    padding: 6px;
    margin-top: 4px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
}
.frcc-calculator button {
    background-color: #007cba;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
}
#frcc-result {
    margin-top: 15px;
    font-weight: bold;
    color: #007cba;
    text-align: center;
}