body {
    font-family: Arial, sans-serif;
    padding: 20px;
}

.controls {
    margin-bottom: 10px;
}

#grid {
    display: grid;
    gap: 2px;
    margin-bottom: 10px;
}

.cell {
    width: 30px;
    height: 30px;
    border: 1px solid #999;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    font-weight: bold;
}

.a { background: #2ecc71; color: white; }
.t { background: #e74c3c; color: white; }
.m { background: #f1c40f; }

.a-light { background: #baf2d0; }
.t-light { background: #f5b7b1; }