body{
font-family: Arial;
background:#0f172a;
color:white;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}

.container{
background:#1e293b;
padding:40px;
border-radius:10px;
text-align:center;
width:400px;
}

button{
display:block;
width:100%;
padding:14px;
margin-top:10px;
border:none;
border-radius:6px;
cursor:pointer;
background:#334155;
color:white;
font-size:16px;
}

button:hover{
background:#475569;
}

.primary{
background:#16a34a;
}

#result{
margin-top:20px;
font-size:14px;
}