@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600;700&display=swap');

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

body {
    background-color: #f0f0f0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calculator {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    grid-template-rows: repeat(5, 100px);
    gap: 10px;
    background-color: #fff;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
}

/* Tampilan layar kalkulator */
.display {
    grid-column: span 4;
    background-color: #333;
    color: white;
    font-size: 2em;
    text-align: right;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 10px 8px rgba(0, 0, 0, 0.3);
}

button {
    border: none;
    color: white;
    border-radius: 8px;
    font-size: 1.5em;
    font-weight: 600;
    font-family: inherit;
    background-color: #1a1a1a;
    cursor: pointer;
    padding: 20px;
    transition: all 0.2s ease;
}

button.alive {
    box-shadow: 0 10px 8px rgba(0, 0, 0, 0.3);
}

button.alive:focus {
    outline: none;
    border: none;
}

button.alive:active {
    box-shadow: 0 5px 0 rgba(0, 0, 0, 0.3);
    transform: translateY(5px);
}

/* Grid positions for the buttons */
.calculator .button-1 { grid-column: 1; grid-row: 2; }
.calculator .button-2 { grid-column: 2; grid-row: 2; }
.calculator .button-3 { grid-column: 3; grid-row: 2; }
.calculator .button-4 { grid-column: 1; grid-row: 3; }
.calculator .button-5 { grid-column: 2; grid-row: 3; }
.calculator .button-6 { grid-column: 3; grid-row: 3; }
.calculator .button-7 { grid-column: 1; grid-row: 4; }
.calculator .button-8 { grid-column: 2; grid-row: 4; }
.calculator .button-9 { grid-column: 3; grid-row: 4; }
.calculator .button-0 { grid-column: 2; grid-row: 5; }
.calculator .button-plus { grid-column: 4; grid-row: 2; }
.calculator .button-minus { grid-column: 4; grid-row: 3; }
.calculator .button-multiply { grid-column: 4; grid-row: 4; }
.calculator .button-divide { grid-column: 4; grid-row: 5; }
.calculator .button-equal { grid-column: 3; grid-row: 5; }
.calculator .button-clear { grid-column: 1; grid-row: 5; }