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

body{
    background: linear-gradient(135deg,#0077b6,#00b4d8);
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:20px;
}

.login-container{
    width:100%;
    max-width:400px;
    text-align:center;
}

.logo{
    width:180px;
    max-width:80%;
    margin-bottom:20px;
}

.login-form{
    background:#ffffff;
    padding:30px;
    border-radius:15px;
    box-shadow:0 4px 15px rgba(0,0,0,0.2);
}

.login-form h2{
    margin-bottom:25px;
    color:#333;
}

.login-form label{
    display:block;
    text-align:left;
    margin-bottom:5px;
    color:#555;
    font-weight:bold;
}

.login-form input[type="text"],
.login-form input[type="password"]{
    width:100%;
    padding:12px;
    margin-bottom:20px;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:16px;
}

#pulsante{
    width:100%;
    padding:14px;
    background:#0077b6;
    color:white;
    border:none;
    border-radius:8px;
    font-size:18px;
    cursor:pointer;
    transition:0.3s;
}

#pulsante:hover{
    background:#005f92;
}

/* Ottimizzazione smartphone */
@media (max-width:480px){

    .login-form{
        padding:20px;
    }

    .logo{
        width:140px;
    }

    #pulsante{
        font-size:16px;
    }
}