body {
    background: #e0e5ec;
    font-family: Poppins, sans-serif;
    text-align: center;
}

form {
    margin: 100px auto;
    padding: 25px;
    width: 320px;
    background: #e0e5ec;
    border-radius: 20px;
    box-shadow: 10px 10px 20px #b8bcc2,
                -10px -10px 20px #ffffff;
}

input, button {
    width: 90%;
    padding: 12px;
    border-radius: 12px;
    border: none;
    margin-top: 10px;
    box-shadow: inset 5px 5px 10px #b8bcc2,
                inset -5px -5px 10px #ffffff;
}

button {
    background: #4b79a1;
    color: white;
    cursor: pointer;
    box-shadow: 5px 5px 10px #b8bcc2,
                -5px -5px 10px #ffffff;
}

/* -----------------------------------
   📱 Mobile Devices (small)
----------------------------------- */
@media (max-width: 480px) {
    form {
        width: 90%;
        margin: 60px auto;
        padding: 20px;
    }

    input, button {
        font-size: 14px;
        padding: 10px;
    }

    h1 {
        font-size: 22px;
    }

    h5 {
        font-size: 14px;
    }
}

/* -----------------------------------
   📱 Tablets 
----------------------------------- */
@media (max-width: 768px) {
    form {
        width: 70%;
    }

    h1 {
        font-size: 26px;
    }
}

/* -----------------------------------
   🖥 Large Screens 
----------------------------------- */
@media (min-width: 1200px) {
    form {
        width: 400px;
        padding: 30px;
    }

    input, button {
        font-size: 16px;
    }
}