.roof-calc-wrapper{
max-width:1100px;
margin:auto;
font-family:Arial;
}

.roof-grid{
display:grid;
grid-template-columns:1fr 1fr;
gap:40px;
}

label{
display:block;
margin-top:15px;
font-weight:600;
}

select,input{
width:100%;
padding:10px;
margin-top:5px;
border:1px solid #ddd;
border-radius:8px;
}

button{
margin-top:20px;
padding:12px;
background:#111;
color:#fff;
border:none;
border-radius:8px;
cursor:pointer;
}

.results{
background:#fafafa;
padding:25px;
border-radius:12px;
}

.stats{
display:flex;
gap:30px;
margin-top:20px;
}