.calculator-card{

    margin-top:40px;
    padding:32px;

    border-radius:20px;

    background:
    var(--surface, #ffffff);

    box-shadow:
    0 12px 40px rgba(0,0,0,.08);

}



.calculator-card input,
.calculator-card select{

    width:100%;

    padding:16px;

    border-radius:12px;

    border:1px solid #ddd;

    font-size:18px;

}



.calculator-card button{

    width:100%;

    margin-top:20px;

    padding:16px 24px;

    border-radius:999px;

    border:none;

    cursor:pointer;

    font-size:18px;

}



#saving-result{

    margin-top:28px;

    padding:24px;

    border-radius:16px;

    font-size:22px;

}



.frequency-options{

    display:flex;

    gap:12px;

}



.frequency-options label{

    flex:1;

}