#game-container {
    width: 400px;
    height: 500px;
    background-color: #2c3e50;
    display: flex;
    justify-content: center;
    align-items: center;
}

#board {
    width: 300px;
    height: 300px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 10px;
    background-color: #34495e;
    padding: 10px;
    border-radius: 10px;
}

.cell {
    background-color: #ecf0f1;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 64px;
    font-weight: bold;
    cursor: pointer;
    color: #2c3e50;
    transition: background-color 0.2s;
}

.cell:hover {
    background-color: #bdc3c7;
}

.cell.x {
    color: #e74c3c;
}

.cell.o {
    color: #3498db;
}

#hud-score {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(0,0,0,0.5);
    padding: 5px 10px;
    border-radius: 5px;
}