body {
    background: #111;
    color: #fff;
    text-align: center;
    font-family: Arial, sans-serif;
    padding: 30px;
}

h1 {
    margin-bottom: 10px;
    color: #00eaff;
    text-shadow: 0 0 10px #00eaff;
}

.hint {
    margin-bottom: 15px;
    color: #ccc;
    font-size: 14px;
}

#board {
    display: grid;
    justify-content: center;
    margin-top: 20px;
}

.cell {
    width: 32px;
    height: 32px;
    background: #000;
    border: 2px solid #00eaff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    cursor: pointer;
    user-select: none;
}

.cell.revealed {
    background: #0a0a0a;
    border-color: #00ff88;
}

.cell.flag {
    background: #ff4444;
}

.cell.mine {
    background: #ff0000;
}