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

.container {
    width: 100%;
    height: 100vh;
    background: linear-gradient(50deg, #3a4452, #5c79a3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.calculator {
    background: #3a4452;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.calculator form {
    display: flex;
    flex-direction: column;
}

.calculator form .display {
    background-color: #5b9486;
    border-radius: 8px;
    padding: 10px;
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
    overflow: hidden;
}

.calculator form .display input {
    border: none;
    background-color: transparent;
    font-size: 26px;
    color: #3162a5;
    width: 100%;
    text-align: right;
    box-shadow: none;
    overflow-x: auto; /* Added this line */
    white-space: nowrap; /* Added this line */
}


.calculator form .buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.calculator form input {
    border: 1px solid #333;
    outline: 0;
    height: 60px;
    border-radius: 10px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1), 5px 5px 15px rgba(0, 0, 0, 0.2);
    background: #4f666b;
    font-size: 20px;
    color: #fff;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
}

.calculator form input:hover {
    background: #5b7486;
}

.calculator form input:active {
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

form input.equal {
    background-color: #fb7c14;
    color: #fff;
    grid-column: span 2;
}

form input.operator {
    color: #6dee0a;
    background: #3a4452;
}

@media screen and (max-width: 600px) {
    .calculator form input {
        height: 45px;
        font-size: 16px;
    }
    form .display input {
        font-size: 20px;
    }
}

@media screen and (min-width: 601px) and (max-width: 1024px) {
    .calculator form input {
        height: 50px;
        font-size: 18px;
    }
    form .display input {
        font-size: 24px;
    }
}

@media screen and (min-width: 1025px) {
    .calculator form input {
        height: 60px;
        font-size: 20px;
    }
    form .display input {
        font-size: 26px;
    }
}