body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

.game-container {
    max-width: 991px;
}

#bingo-board {
    display: grid;
    gap: 6px;
    margin-bottom: 20px;
}

#bingo-board.bingo-board-25 {
    grid-template-columns: repeat(5, 80px);
    grid-template-rows: repeat(5, 40px);
}

#bingo-board.bingo-board-36 {
    grid-template-columns: repeat(6, 80px);
    grid-template-rows: repeat(6, 40px);
}

#bingo-board.bingo-board-72 {
    grid-template-columns: repeat(8, 80px);
    grid-template-rows: repeat(9, 40px);
}

#bingo-board.bingo-board-100 {
    grid-template-columns: repeat(10, 80px);
    grid-template-rows: repeat(10, 40px);
}


@media (max-width: 961px) {
    #bingo-board.bingo-board-72,
    #bingo-board.bingo-board-100 {
        grid-template-columns: repeat(8, 80px);
    }
}

@media (max-width: 800px) {
    #bingo-board.bingo-board-72,
    #bingo-board.bingo-board-100 {
        grid-template-columns: repeat(6, 80px);
    }
}

@media (max-width: 600px) {
    #bingo-board.bingo-board-25,
    #bingo-board.bingo-board-36,
    #bingo-board.bingo-board-72,
    #bingo-board.bingo-board-100 {
        grid-template-columns: repeat(4, 80px);
    }
}

@media (max-width: 430px) {
    #bingo-board.bingo-board-25,
    #bingo-board.bingo-board-36,
    #bingo-board.bingo-board-72,
    #bingo-board.bingo-board-100 {
        grid-template-columns: repeat(3, 80px);
    }
}

.bingo-cell {
    width: 80px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #ccc;
    box-sizing: border-box;
    font-size: 1em;
    cursor: pointer;
    background-color: #f9f9f9;
    position: relative;
}

.bingo-cell.marked {
    background-color: #d4edda;
    text-decoration: line-through;
}

.bingo-cell.marked-color {
    opacity: 0.3;
    text-decoration: none;
    border: 3px solid #4CAF50;
}

.bingo-cell.marked-color::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    height: 2px;
    background-color: black;
    transform: translateY(-50%);
}

button {
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
}

#new-game-btn {
    width: 100%;
    background-color: #eb6223;
    color: white;
    border-color: #f15208;
    border-radius: 5px;
    transition: background-color 0.2s, border-color 0.2s;
}

.highlight-number,
.highlight-letter {
    font-weight: bold;
}

.mask-letter,
.mask-number {
    opacity: 0.4;
    font-size: 0.7em;
    vertical-align: super;
    display: inline-block;
    line-height: 1;
}

.mask-other {
    opacity: 0.4;
    font-size: 0.8em;
}

.settings-row {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    gap: 10px;
    margin: 0 auto;
}

.mode-btn-container {
    display: flex;
    gap: 10px;
}

.mode-btn,
.icon-btn {
    padding: 3px 12px;
    font-size: 1em;
    cursor: pointer;
    border: 1px solid #ccc;
    background-color: #f0f0f0;
    border-radius: 5px;
    transition: background-color 0.2s, border-color 0.2s;
}

.mode-btn:hover,
.icon-btn:hover {
    background-color: #e0e0e0;
    border-color: #999;
}

.mode-btn.active {
    background-color: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

.hidden {
    display: none;
}

#congratulations-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

#congratulations-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#congratulations-overlay .message {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transform: scale(1);
    transition: transform 0.3s ease-in-out;
    width: 336px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 80vh;
    overflow-y: auto;
    box-sizing: border-box;
}

#congratulations-overlay.hidden .message {
    transform: scale(0.8);
}

#settings-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

#settings-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#settings-modal .modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transform: scale(1);
    transition: transform 0.3s ease-in-out;
    width: 336px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 80vh;
    overflow-y: auto;
    box-sizing: border-box;
}

#settings-modal.hidden .modal-content {
    transform: scale(0.8);
}

#settings-modal h3 {
    margin-top: 0;
    color: #333;
}

#settings-modal label {
    font-weight: bold;
    margin-bottom: 5px;
    text-align: left;
}

#settings-modal select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    margin-bottom: 10px;
}

#settings-modal select:hover {
    border-color: #007bff;
}

#settings-modal button {
    padding: 10px 15px;
    font-size: 1em;
    cursor: pointer;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
}

#settings-modal button:hover {
    background-color: #0056b3;
}

#congratulations-overlay h2 {
    font-size: 2.5em;
    color: #4CAF50;
    margin-bottom: 10px;
}

#congratulations-overlay p {
    font-size: 1.2em;
    color: #333;
    margin-bottom: 20px;
}

#congratulations-overlay .emojis {
    margin: 20px 0;
}

#winning-emoji {
    font-size: 4em;
    display: inline-block;
    animation: scale-bounce 1s infinite alternate;
}

@keyframes scale-bounce {
    from { transform: scale(1); }
    to { transform: scale(2); }
}