*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial,sans-serif;
}

body{

background:linear-gradient(135deg,#0f172a,#1e3a8a,#2563eb);

display:flex;

justify-content:center;

align-items:center;

height:100vh;

}

.login-box{

width:380px;

background:#fff;

padding:30px;

border-radius:15px;

box-shadow:0 0 20px rgba(0,0,0,.3);

text-align:center;

}

h1{

color:#2563eb;

margin-bottom:10px;

}

h3{

margin-bottom:20px;

color:#555;

}

input{

width:100%;

padding:12px;

margin:10px 0;

border:1px solid #ccc;

border-radius:8px;

font-size:16px;

}

button{

width:100%;

padding:12px;

margin-top:15px;

background:#2563eb;

color:white;

border:none;

border-radius:8px;

font-size:17px;

cursor:pointer;

}

button:hover{

background:#1d4ed8;

}

#msg{

margin-top:15px;

font-weight:bold;

}

a{

display:block;

margin-top:20px;

text-decoration:none;

color:#2563eb;

}