body{

    background:#0b0b0f;
    color:white;
    font-family:Arial,sans-serif;

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

    min-height:100vh;

}


.box{

    background:#16161d;

    padding:40px;

    width:384px;

    max-width:calc(100% - 32px);

    box-sizing:border-box;

    border-radius:20px;

    box-shadow:0 0 20px #000;

    text-align:center;

}



h1{

    margin-bottom:25px;

}



input{

    width:100%;

    padding:12px;

    margin-top:8px;

    margin-bottom:18px;

    border-radius:10px;

    border:1px solid #444;

    background:#222;

    color:white;

    box-sizing:border-box;

}



button{

    width:100%;

    padding:12px;

    border:0;

    border-radius:10px;

    background:#66ff99;

    color:white;

    font-size:16px;

    cursor:pointer;

}



button:hover{

    background:#55ee88;

}



a{

    color:#66ff99;

    text-decoration:none;

}



.link{

    margin-top:20px;

}



@media(max-width:600px){

    .box{

        width:calc(100% - 32px);

        padding:30px 20px;

    }

}


.error-box{

    background:#3a1515;

    border:1px solid #ff5555;

    color:#ff7777;

    padding:12px;

    border-radius:10px;

    margin-bottom:15px;

    font-size:14px;

}