* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #ecf0f3;
    font-family: 'Segoe UI', sans-serif;
    outline: none;
}

.Container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.Calculator {
    background-color: #ecf0f3;
    padding: 20px;
    border-radius: 30px;
    box-shadow: inset 5px 5px 12px #ffffff,
                inset -5px -5px 12px rgba(0, 0, 0, 0.1);
    display: grid;
    grid-template-columns: repeat(4, 68px);
    gap: 10px;
}

input {
    grid-column: span 4;
    height: 70px;
    width: 100%;
    background-color: #ecf0f3;
    box-shadow: inset -5px -5px 12px #ffffff,
                inset 5px 5px 12px rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50px;
    color: #333;
    font-size: 32px;
    text-align: right;
    margin: 20px 0;
    padding: 0 20px;
}

button {
    height: 60px;
    width: 60px;
    background-color: #ecf0f3;
    box-shadow: -5px -5px 10px #ffffff,
                 5px 5px 10px rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

button:hover {
    box-shadow: inset -3px -3px 6px #ffffff,
                inset 3px 3px 6px rgba(0, 0, 0, 0.1);
}

button:active {
    transform: scale(0.95);
}

.operator {
    color: #f57c00;
    font-weight: bold;
}

.equal {
    width: 140px;
    border-radius: 40px;
    grid-column: span 2;
    background-color: #ecf0f3;
    box-shadow: -6px -6px 12px #ffffff,
                 6px 6px 12px rgba(0, 0, 0, 0.1);
    font-weight: bold;
    color: #0a84ff;
}