body{
    background:#f4f4f4;
    font-family:Arial, sans-serif;
    margin:0;
    padding:0;
}
section{
    width:88%;
}
body #sidebar{
    top:0;
}
.calculator-section{
    background:#fff;
    border-radius:10px;
    box-shadow:0 0 10px rgba(0, 0, 0, 0.1);
    margin:15px auto;
    padding:30px;
}
.calculator-title{
    color:#333;
    font-size:24px;
    margin-bottom:20px;
    text-align:center;
}
.case-types{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}
.case-types label{
    align-items:center;
    border:1px solid #ccc;
    border-radius:5px;
    color:#555;
    display:inline-flex;
    font-size:16px;
    padding:8px;
    transition:border-color 0.3s;
    width:auto;
}
.case-types input[type="radio"]{
    margin-right:8px;
}
.input-group{
    margin:15px 0;
}
.input-group input[type="number"]{
    border:1px solid #ccc;
    border-radius:5px;
    box-sizing:border-box;
    font-size:16px;
    padding:10px;
    transition:border-color 0.3s, background 0.3s;
    width:100%;
}
.input-group input[type="number"]:focus{
    border-color:#00d9ff;
    outline:none;
}
.btn-calculate{
    background:#00d9ff;
    color:#fff;
    cursor:pointer;
    margin-top:10px;
}
.btn-calculate:hover{
    background:#00b5e2;
}
.result{
    background:#e9ecef;
    border:1px solid #ccc;
    border-radius:5px;
    border-radius:4px;
    color:red;
    font-size:18px;
    line-height:40px;
    margin-top:20px;
    padding:10px;
    text-align:center;
    white-space:break-spaces;
}
.calculator-title{
    margin-bottom:20px;
    text-align:center;
}
.case-types label{
    display:block;
    margin-bottom:10px;
    margin-right:10px;
}
.input-group{
    margin-bottom:20px;
}
.btn-calculate, .rules-button{
    background:#1a73e8;
    border:none;
    border-radius:4px;
    color:#fff;
    cursor:pointer;
    display:inline-block;
    margin:20px 30px 20px 0;
    padding:15px;
    width:200px;
}
.additional-options{
    background:#f9f9f9;
    border:1px solid #ddd;
    border-radius:8px;
    display:none;
    margin:10px 0 20px 0;
    padding:10px;
}
.additional-options label{
    display:block;
    font-weight:bold;
    margin-bottom:10px;
}
.additional-options input[type="checkbox"]{
    margin-right:10px;
}
.case-title{
    display:inline-block;
    margin:10px 0;
    margin-right:10px;
}
@media (max-width:600px){
    .calculator-title{
        font-size:18px;
        margin:5px 0 10px 0;
        margin-bottom:20px;
        text-align:left;
    }
    body .calculator-section{
        margin:0;
        padding:15px;
    }
    body .additional-options label{
        display:block;
        font-size:13px;
        font-weight:400;
        margin-bottom:10px;
    }
}