@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    text-decoration: none;
    color: #f2f2f2;
    font-family: "Poppins";
}

body {
    background-image: url(./img/wallpaper.jpg);
    background-position: center;
    background-size: cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.box {
    background-color: #131313;
    height: 21rem;
    width: 17rem;
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    border-radius: 10px;
    box-shadow: 1px 10px 18px #131313;
}

.box #textfield {
    height: 30%;
    padding: 5px 0;
    border-bottom: solid 1px #595959;
}

.box #textfield input {
    height: 100%;
    width: 100%;
    border: none;
    background: none;
    font-size: 2rem;
    padding: 0 15px;
    text-align: end;
}

.box #buttonfield {
    height: 65%;
}

#buttons {
    display: grid;
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    grid-template-rows: repeat(4, 1fr);
    gap: 2px;
}

button {
    font-size: 2rem;
    cursor: pointer;
    background: none;
    border: none;
}

.numberButton:hover {
    color: #b8b8b8;
}

.operatorButton, #backspaceButton {
    background: fixed;
    background-color: #2b2b2b3d;
    border-radius: 10px;
}

.operatorButton:hover, #backspaceButton:hover {
    background-color: #4747473d;
}

.resultButton {
    background: fixed;
    background-color: #2193b0;
    border-radius: 10px;
}

.resultButton:hover {
    background-color: #1d7b92;
}