body{
    margin:0;
    padding:0;
    font-family:Arial, Helvetica, sans-serif;
    background:linear-gradient(135deg,#0f172a,#1e3a8a);
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}

.login-box{
    width:380px;
    background:#ffffff;
    padding:35px;
    border-radius:12px;
    box-shadow:0 10px 30px rgba(0,0,0,.3);
}

.login-box h2{
    text-align:center;
    color:#0f172a;
    margin-bottom:25px;
}

.login-box input{
    width:100%;
    padding:12px;
    margin-bottom:18px;
    border:1px solid #ccc;
    border-radius:6px;
    font-size:15px;
    box-sizing:border-box;
}

.login-box input:focus{
    border-color:#2563eb;
    outline:none;
}

.login-box button{
    width:100%;
    padding:12px;
    background:#2563eb;
    color:#fff;
    border:none;
    border-radius:6px;
    font-size:16px;
    cursor:pointer;
}

.login-box button:hover{
    background:#1d4ed8;
}

#msg{
    margin-top:15px;
    text-align:center;
    color:red;
    font-size:14px;
}