.rutv-wrapper{max-width:900px;margin:auto;font-family:sans-serif}
.rutv-card{
background:#fff;
padding:25px;
border-radius:12px;
box-shadow:0 10px 25px rgba(0,0,0,.08)
}
.rutv-card input,
.rutv-card textarea{
width:100%;
padding:12px;
margin:10px 0;
border-radius:8px;
border:1px solid #ddd
}
button{
background:#0d6efd;
color:#fff;
border:none;
padding:10px 15px;
border-radius:8px;
cursor:pointer;
margin-top:10px
}
#rut-result{font-weight:bold;margin-top:10px}
.valid{color:green}
.invalid{color:red}
#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}