* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    font-family: Arial, sans-serif;
    background: #f4f4f4;
}

.game {
    width: 100%;
    max-width: 420px;

    padding: 32px;

    text-align: center;

    background: white;

    border-radius: 16px;

    box-shadow: 0 8px 30px
        rgba(0, 0, 0, 0.1);
}

h1 {
    margin-top: 0;
}

.description {
    color: #666;
}

.board {
    display: grid;

    grid-template-columns:
        repeat(3, 100px);

    gap: 6px;

    justify-content: center;

    margin: 30px 0;
}

.cell {
    width: 100px;
    height: 100px;

    border: none;
    border-radius: 10px;

    font-size: 48px;
    font-weight: bold;

    cursor: pointer;

    background: #eeeeee;
}

.cell:hover {
    background: #dddddd;
}

.cell:disabled {
    cursor: default;
}

.status {
    min-height: 24px;

    font-size: 18px;
    font-weight: bold;
}

.new-game {
    padding: 12px 20px;

    border: none;
    border-radius: 8px;

    font-size: 16px;

    cursor: pointer;

    background: #222222;
    color: white;
}

.new-game:hover {
    background: #444444;
}