*{box-sizing:border-box;font-family:Segoe UI;margin:0;padding:0}

.login-wrapper{
height:100vh;
display:flex;
justify-content:center;
align-items:center;
background:linear-gradient(135deg,#0d47a1,#1976d2);
}

.login-box{
background:#fff;
padding:40px;
width:380px;
border-radius:16px;
box-shadow:0 25px 60px rgba(0,0,0,.2);
text-align:center;
}

.logo{
width:220px;   /* BIG visible logo */
margin-bottom:15px;
}

.sub{
color:#777;
margin-bottom:20px;
}

.input{
display:flex;
align-items:center;
border:1px solid #ddd;
border-radius:10px;
margin-bottom:14px;
padding:10px;
}

.input i{
color:#1976d2;
margin-right:8px;
}

.input input{
border:none;
outline:none;
flex:1;
font-size:14px;
}

.btn-login{
width:100%;
padding:12px;
border:none;
border-radius:10px;
background:#1976d2;
color:#fff;
font-weight:bold;
cursor:pointer;
transition:.3s;
}

.btn-login:hover{background:#0d47a1}

.error{
background:#ffe5e5;
color:#c62828;
padding:10px;
border-radius:8px;
margin-bottom:12px;
font-size:14px;
}