body{
font-family:Arial, sans-serif;
background:#0d1117;
color:white;
text-align:center;
padding:60px;
}

.container{
max-width:700px;
margin:auto;
background:#161b22;
padding:40px;
border-radius:12px;
box-shadow:0 0 20px rgba(0,0,0,0.4);
}

h1{
margin-bottom:30px;
}

.code-box{
font-size:28px;
margin:20px 0;
}

button{
margin-left:10px;
padding:10px 16px;
cursor:pointer;
border:none;
border-radius:6px;
}

.signup-btn{
display:inline-block;
margin-top:20px;
padding:14px 24px;
background:#2ea043;
color:white;
text-decoration:none;
border-radius:8px;
font-weight:bold;
}