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

body {
    background-color: #ffffff; 
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.calculator {
    background: linear-gradient(45deg, #6666ff, #00cccc); /* Apply gradient to calculator */
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0px 3px 15px rgba(113, 115, 119, 0.5);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    max-width: 400px; 
}

input {
    width: calc(100% - 20px);
    border: none;
    padding: 24px;
    margin: 10px;
    background: transparent;
    box-shadow: 0px 3px 15px rgba(84, 84, 84, 0.1);
    font-size: 40px;
    text-align: right;
    cursor: pointer;
    color: #ffffff;
    background-color: #131313;
}

input::placeholder {
    color: #ffffff;
}

button {
    border: none;
    width: 60px;
    height: 60px;
    margin: 10px;
    border-radius: 50%;
    background: transparent;
    color: #ffffff;
    font-size: 20px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #717377;
}

.equalBtn {
    background-color: #fb7c14;
}

.operator {
    color: #6dee0a;
}