.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    touch-action: none;
}

.turn-indicator {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #2f4f4f;
    text-align: center;
}

#game {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    gap: 0;
    background-color: #2f4f4f;
    padding: 4px;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    border: 4px solid #2f4f4f;
}

.square {
    width: 60px;
    height: 60px;
    position: relative;
    cursor: pointer;
    border: none;
    outline: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.square.light {
    background-color: #f0d9b5;
}

.square.dark {
    background-color: #b58863;
}

.square.selected {
    background-color: #baca44;
    box-shadow: inset 0 0 0 3px #7d8c2f;
}

.square.valid-move {
    background-color: #9fb8d9;
    cursor: pointer;
}

.square.valid-move::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: rgba(74, 144, 226, 0.5);
}

.piece {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    position: relative;
    cursor: pointer;
    border: 3px solid #2f4f4f;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    font-weight: bold;
    transition: transform 0.2s ease;
}

.piece:hover {
    transform: scale(1.1);
}

.piece.red {
    background: radial-gradient(circle at 30% 30%, #ff6666, #cc0000);
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.piece.black {
    background: radial-gradient(circle at 30% 30%, #555, #000);
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.piece.king::after {
    content: '♔';
    position: absolute;
    font-size: 32px;
}

.piece.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.game-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

#instructions {
    margin-top: 20px;
    text-align: center;
    max-width: 500px;
    line-height: 1.4;
}

.mobile-controls {
    display: none;
}

.desktop-controls {
    display: block;
}

.game-over-score {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: 30px;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    body {
        padding: 20px 10px;
        overflow-x: hidden;
        overscroll-behavior: none;
    }

    #game {
        grid-template-columns: repeat(8, 50px);
        grid-template-rows: repeat(8, 50px);
    }

    .square {
        width: 50px;
        height: 50px;
    }

    .piece {
        width: 42px;
        height: 42px;
        font-size: 24px;
    }

    .piece.king::after {
        font-size: 28px;
    }

    .turn-indicator {
        font-size: 20px;
        margin-bottom: 15px;
    }

    #instructions {
        font-size: 14px;
        margin-top: 15px;
    }
    
    .mobile-controls {
        display: block;
    }
    
    .desktop-controls {
        display: none;
    }
}

@media (max-width: 480px) {
    #game {
        grid-template-columns: repeat(8, 40px);
        grid-template-rows: repeat(8, 40px);
    }

    .square {
        width: 40px;
        height: 40px;
    }

    .piece {
        width: 34px;
        height: 34px;
        font-size: 20px;
        border: 2px solid #2f4f4f;
    }

    .piece.king::after {
        font-size: 24px;
    }

    .square.valid-move::after {
        width: 15px;
        height: 15px;
    }
}