*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,sans-serif}
body{
height:100vh;
display:flex;
justify-content:center;
align-items:center;
background:url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
}
.overlay{
position:fixed;inset:0;background:rgba(0,0,0,.45);
}
.login-box{
position:relative;
z-index:1;
width:380px;
background:#fff;
padding:35px;
border-radius:12px;
box-shadow:0 10px 30px rgba(0,0,0,.25);
}
h2{text-align:center;margin-bottom:20px}
input{
width:100%;
padding:12px;
margin-bottom:12px;
border:1px solid #ccc;
border-radius:6px;
}
button{
width:100%;
padding:12px;
border:none;
border-radius:6px;
cursor:pointer;
}