* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;

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

    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.game {
    background: white;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
}

h1 {
    margin: 0 0 10px 0;
    font-size: 40px;
}

#status {
    margin: 0 0 20px 0;
    font-size: 20px;
    font-weight: bold;
}

.board {
    display: grid;
    grid-template-columns: 100px 100px 100px;
    grid-template-rows: 100px 100px 100px;
    gap: 8px;
    margin-bottom: 25px;
}

.cell {
    width: 100px;
    height: 100px;
    padding: 0;
    margin: 0;

    border: 2px solid #333;
    border-radius: 10px;

    background: #eeeeee;

    font-family: Arial, sans-serif;
    font-size: 55px;
    font-weight: bold;

    cursor: pointer;
}

.cell:hover {
    background: #dddddd;
}

.cell.winner {
    background: #90ee90;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
}

#reset,
#exit {
    border: none;
    border-radius: 10px;

    background: #333333;
    color: white;

    padding: 12px 25px;

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

    cursor: pointer;
}

#reset:hover,
#exit:hover {
    background: #555555;
}