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

body{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    background:linear-gradient(135deg,#1565C0,#0D47A1);
    padding:20px;
}

.login-box{
    width:100%;
    max-width:400px;
    background:#000;
    border-radius:20px;
    padding:35px 25px;
    box-shadow:0 15px 40px rgba(0,0,0,.25);
    animation:fadeIn .5s;
}

@keyframes fadeIn{
    from{
        opacity:0;
        transform:translateY(30px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

.logo{
    text-align:center;
    margin-bottom:30px;
}

.logo i{
    width:80px;
    height:80px;
    line-height:80px;
    border-radius:50%;
    background:#1565C0;
    color:#fff;
    font-size:34px;
    margin-bottom:15px;
}

.logo h2{
    color:#fff;
    font-size:28px;
    margin-bottom:5px;
}

.logo p{
    color:#fff;
    font-size:15px;
    
}

.error{
    background:#000;
    color:#fff;
    border-left:5px solid #000;
    padding:12px;
    border-radius:8px;
    margin-bottom:20px;
    font-size:14px;
}

.input-box{
    margin-bottom:20px;
}

.input-box label{
    display:block;
    margin-bottom:8px;
    font-weight:600;
    color:#fff;
}

.input-box input{
    width:100%;
    height:50px;
    border:1px solid #dcdcdc;
    border-radius:12px;
    padding:0 15px;
    font-size:16px;
    transition:.3s;
}

.input-box input:focus{
    outline:none;
    border-color:#1565C0;
    box-shadow:0 0 0 4px rgba(21,101,192,.15);
}

.login-btn{
    width:100%;
    height:52px;
    border:none;
    border-radius:12px;
    background:#1565C0;
    color:#fff;
    font-size:17px;
    font-weight:bold;
    cursor:pointer;
    transition:.3s;
}

.login-btn:hover{
    background:#0D47A1;
    transform:translateY(-2px);
}

.login-btn:active{
    transform:scale(.98);
}

.footer{
    margin-top:25px;
    text-align:center;
}

.footer p{
    color:#888;
    font-size:13px;
}

@media(max-width:480px){

.login-box{
    padding:25px 18px;
}

.logo i{
    width:70px;
    height:70px;
    line-height:70px;
    font-size:28px;
}

.logo h2{
    font-size:24px;
}

.input-box input{
    height:48px;
}

.login-btn{
    height:50px;
}

}