/* Bingo Card Generator Styles */
.bingo-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px;
    border: 2px solid #dee2e6;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    background-color: white;
    font-size: 0.85rem;
    word-break: break-word;
    overflow: hidden;
}

.bingo-cell:hover {
    border-color: #0d6efd;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.bingo-cell.free {
    background-color: #f8f9fa;
    font-weight: bold;
    color: #6c757d;
    border-style: dashed;
}

.bingo-cell.selected {
    background-color: #d1e7dd;
    border-color: #a3cfbb;
    position: relative;
    color: #0f5132;
}

.bingo-cell.selected::after {
    content: '✓';
    position: absolute;
    top: 2px;
    right: 5px;
    color: #198754;
    font-weight: bold;
    font-size: 1.2em;
}

/* Loading spinner */
#loading {
    display: none;
    text-align: center;
    padding: 2rem 0;
}

/* Error message */
#error-message {
    display: none;
    margin: 1rem 0;
}