.iwc-container{
    max-width:550px;
    margin:40px auto;
    padding:25px;
    border-radius:18px;
    background:#ffffff;
    box-shadow:0 4px 20px rgba(0,0,0,0.08);
    font-family:Arial,sans-serif;
}

.iwc-container h2{
    margin-bottom:20px;
    text-align:center;
}

.iwc-container input,
.iwc-container select{
    width:100%;
    padding:14px;
    border-radius:12px;
    border:1px solid #d1d5db;
    margin-bottom:14px;
    box-sizing:border-box;
    font-size:15px;
}

#iwc-calculate{
    width:100%;
    padding:15px;
    border:none;
    border-radius:14px;
    background:#16a34a;
    color:#fff;
    font-size:16px;
    cursor:pointer;
}

#iwc-results{
    margin-top:25px;
}

.iwc-card{
    background:#f9fafb;
    padding:18px;
    border-radius:14px;
    margin-bottom:14px;
    border-left:5px solid #16a34a;
}

.iwc-card h3{
    margin-top:0;
    margin-bottom:8px;
}

.iwc-card p{
    margin:5px 0;
}

@media(max-width:600px){

    .iwc-container{
        margin:15px;
        padding:20px;
    }
}