body{
margin:0;
font-family:Segoe UI, Arial;
background:#f4f6f9;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}

.login-box{
width:340px;
background:white;
padding:40px;
border-radius:10px;
box-shadow:0 10px 25px rgba(0,0,0,0.15);
text-align:center;
}

.logo{
width:140px;
margin-bottom:25px;
}

.login-box input{
width:100%;
padding:12px;
margin:10px 0;
border:1px solid #ddd;
border-radius:6px;
font-size:14px;
}

.login-box button{
width:100%;
padding:12px;
background:#3a7afe;
border:none;
color:white;
border-radius:6px;
font-size:15px;
cursor:pointer;
}

.login-box button:hover{
background:#2f63d8;
}

.error{
color:red;
margin-top:10px;
}