body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    margin: 20px auto;
    width: 320px;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #333;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    gap: 5px;
    margin: 20px auto;
}

.cell {
    width: 100px;
    height: 100px;
    background-color: #fafafa;
    border: 2px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.cell.taken {
    cursor: not-allowed;
    background-color: #ddd;
}

#status {
    font-size: 1.2rem;
    margin: 10px 0;
}

#reset {
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

#reset:hover {
    background-color: #0056b3;
}

#visualization {
    text-align: left;
    margin-top: 20px;
}

#decision-tree {
    list-style: none;
    padding: 0;
    font-size: 0.9rem;
    color: #555;
}

#decision-tree li {
    margin: 5px 0;
}

/* Resaltar celdas durante la evaluación */
.cell.highlight {
    background-color: #ffeb3b; /* Amarillo */
    transition: background-color 0.5s;
}