.rut-wrapper{
max-width:1000px;
margin:auto;
font-family:sans-serif;
}

.rut-card{
display:grid;
grid-template-columns:1fr 1fr;
gap:20px;
background:#fff;
padding:25px;
border-radius:12px;
box-shadow:0 10px 25px rgba(0,0,0,.08);
}

@media(max-width:768px){
.rut-card{
grid-template-columns:1fr;
}
}

.rut-left label{
display:block;
margin-top:12px;
font-weight:600;
}

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

.rut-btn{
margin-top:15px;
background:#0d6efd;
color:#fff;
border:none;
padding:12px;
border-radius:8px;
cursor:pointer;
}

.rut-btn:disabled{
opacity:.6;
cursor:not-allowed;
}

.rut-item{
display:flex;
justify-content:space-between;
align-items:center;
padding:10px;
margin:6px 0;
background:#f7f7f7;
border-radius:8px;
transition:.3s;
}

.rut-item:hover{
transform:translateY(-2px);
}

.copy-btn{
cursor:pointer;
font-size:18px;
}

.rut-copy-all{
margin-top:10px;
width:100%;
padding:10px;
border:none;
background:#198754;
color:white;
border-radius:8px;
}

#rut-toast{
position:fixed;
bottom:20px;
right:20px;
background:#222;
color:#fff;
padding:12px 18px;
border-radius:8px;
opacity:0;
transition:.4s;
}
#rut-toast.show{
opacity:1;
}