body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #222;
    color: #fff;
    margin: 0;
    padding: 0;
}

#message {
    margin: 10px;
    min-height: 20px;
    font-size: 18px;
}

#buttons {
    margin: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#buttons button {
    padding: 10px 20px;
    margin: 0 5px;
    background-color: #444;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    font-size: 16px;
    transition: background-color 0.2s, transform 0.1s;
}

#buttons button:hover {
    background-color: #555;
}

#buttons button:active {
    transform: scale(0.98);
}

#buttons label {
    margin-left: 10px;
    font-size: 16px;
    cursor: pointer;
}

#buttons input[type="checkbox"] {
    margin-right: 5px;
    cursor: pointer;
}

#flagModeLabel {
    display: none;
}

@media (pointer: coarse) {
    #flagModeLabel {
        display: inline-block;
    }
}

#game {
    display: inline-block;
    margin-top: 20px;
}

.row {
    display: flex;
}

.cell {
    width: 30px;
    height: 30px;
    background-color: #333;
    border: 1px solid #555;
    line-height: 30px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    color: #fff;
    font-size: 18px;
    transition: background-color 0.2s;
}

.cell:hover {
    background-color: #3a3a3a;
}

.cell.open {
    background-color: #444;
    cursor: default;
}

.cell.mine {
    background-color: #ff4d4d;
}

.cell.flag {
    background-color: #333;
}

.cell.flag::before {
    content: "🚩";
}

.cell.mine::before {
    content: "💣";
}