body{
    margin:0;
    font-family: Arial, Helvetica, sans-serif;

    background-image:url("/resource/login_bg.jpg");
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;

    height:100vh;
}

.login-title{
    position:absolute;
    top:18%;
    left:50%;
    transform:translateX(-50%);

    width:420px;
    max-width:85%;

    z-index:2;

    filter:drop-shadow(0 6px 12px rgba(0,0,0,0.8));
}

/* horizontal center strip */

.login-strip{
    position:absolute;
    top:50%;
    left:0;
    width:100%;

    transform:translateY(-50%);

    background:rgba(0,0,0,0.55);
    backdrop-filter:blur(6px);

    padding:80px 0;

    display:flex;
    justify-content:center;
    align-items:center;

    z-index:1;
}

/* login card */

.login-card{
    width:90%;
    max-width:360px;

    padding:35px;

    background:white;
    border-radius:8px;

    text-align:center;

    box-shadow:0 20px 40px rgba(0,0,0,0.6);
}

h2{
    margin-bottom:20px;
}

/* input */

input{
    width:100%;
    padding:10px;

    margin-bottom:15px;

    border:1px solid #ccc;
    border-radius:4px;

    font-size:14px;
}

/* button */

button{
    width:100%;
    padding:10px;

    background:#2d8cf0;
    border:none;
    border-radius:4px;

    color:white;
    font-size:14px;
    cursor:pointer;
}

button:hover{
    background:#1a73e8;
}

/* message */

#message{
    margin-top:15px;
    font-size:14px;
}


@media (max-width: 768px){

    .login-strip{
        padding:120px 0;
    }

    .login-title{
        top:14%;
        width:75%;
    }

    .login-card{
        padding:30px;
    }
}