/* .number-display {
    margin: 0.25em 0 1em;
    font-size: 1.4em;
    color: #0056b3;
} */
table.board {
    border-collapse: collapse;
    margin: 2em auto 0;
    width: 80vmin;
    height: 80vmin;
    table-layout: fixed;
}
@media(max-width:900px) {
    table.board {
        width: 95vmin;
        height: 95vmin;
    }
}
table.board th, table.board td {
    border: 1px solid #ccc;
    padding: 0;
    text-align: center;
    font-size: 1.4em;
}
@media(max-width: 900px) {
    table.board th {
        font-size: 0.8em !important;
        padding: 0;
    }
    table.board td {
        font-size: 1em;
        font-weight: 600;
    }
}
table.board thead th,
table.board tbody th {
    background-color: #007BFF;
    color: #ffffff;
}
table.board .col-header,
table.board .row-header {
    font-size: 1em;
}
table.board .col-header,
table.board thead th:first-child {
    height: 6vmin;
    line-height: 6vmin;
}
table.board td {
    background-color: #ffffff;
}
table.board td:hover {
    background-color: #f0f0f0;
    cursor: pointer;
}

.bingo-message {
    visibility: hidden;
}
/* .feedback {
    margin-top: 1em;
    font-size: 1.2em;
    width: 35ch;
}
.bingo-message button {
    margin-top: 0.5em;
    font-size: 0.3em;
    padding: 0.5em 1em;
}
#final-time {
    font-size: 1em;
    margin-top: 0.2em;
}
#stopwatch {
    position: fixed;
    top: 0.5em;
    left: 0.5em;
    font-size: 1.2em;
}
#correct-counter {
    position: fixed;
    top: 2.5em;
    left: 0.5em;
    font-size: 1.2em;
}
#home-button {
    position: fixed;
    top: 0.5em;
    right: 0.5em;
    font-size: 1.2em;
    background: #007BFF;
    color: #ffffff;
    padding: 0.2em 0.6em;
    border-radius: 4px;
    text-decoration: none;
}
.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.75);
    color: #ffffff;
    padding: 0.2em 0.4em;
    font-size: 0.9em;
    border-radius: 4px;
    pointer-events: none;
    display: none;
    z-index: 1001;
}




.mode-buttons {
    display: flex;
    gap: 2em;
}
.mode-buttons a {
    display: inline-block;
    padding: 1em 2em;
    background: #007BFF;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}
 */



/* .boards {
    display: flex;
    justify-content: center;
    gap: 3em;
    margin-top: 1em;
}
table.leaderboard {
    border-collapse: collapse;
    font-size: 1.2em;
    min-width: 18em;
}
table.leaderboard th,
table.leaderboard td {
    border: 1px solid #ccc;
    padding: 0.5em 1em;
} */