.chess_board {
    width: 100%;
    height: 100%;
    display: table;
    border: 2px solid #3c2d21;
    border-spacing: 0;
    
    -webkit-touch-callout: none;
      -webkit-user-select: none;
       -khtml-user-select: none;
         -moz-user-select: none;
          -ms-user-select: none;
              user-select: none;
}

.mobile .chess_board {
    -webkit-transition: none;
            transition: none;
}

.chess_board .rank {
    display: table-row;
}

.chess_board .square {
    display: table-cell;
    position: relative;
    cursor: default;
}

.chess_board .square.light {
    background-color: #F0D9B5;
}

.chess_board .square.dark {
    background-color: #B58863;
}

.chess_board .square .notation {
    position: absolute;
    pointer-events: none;
    font-family: arial, sans, sans-serif;
    font-size: 15px;
    z-index: 10;
}

.chess_board .square.light .notation {
    color: #B58863;
}
.chess_board .square.dark .notation {
    color: #F0D9B5;
}

.chess_board .square .letter {
    right: 10%;
    bottom: 4%;
}

.chess_board .square .num {
    left: 6%;
    top: 5%;
}

.chess_board .piece {
    z-index: 1;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    cursor: pointer!important;
    image-rendering: -moz-crisp-edges;
    -webkit-transition: all 200ms;
            transition: all 200ms;
}

.mobile .piece, .piece.snap {
    -webkit-transition: none;
            transition: none;
}

.boardArrows {
    pointer-events: none;
    position: absolute;
}
.boardArrows.waiting {
}
.chess_board.waiting .piece {
    cursor: default!important;
}


/* See through the pieces to get the square underneath. */
.chess_board.dragging .piece {
    pointer-events: none;
}
/* Since we can see through the piece, we need the squares to have the pointer cursor. */
.chess_board.dragging .square {
    cursor: move!important;
}

.piece.dragging {
    z-index: 2!important;
    
    -webkit-transition: all 75ms;
            transition: all 75ms;
}

.piece.fastDrag {
    z-index: 2!important;
    
    -webkit-transition: none!important;
            transition: none!important;
}


.chess_board.waiting {
}

.captured {
    opacity: 0;
    pointer-events: none;
}

.board_modular_window {
    position: fixed;
    top: 40%;
    bottom: 40%;
    right: 30%;
    left: 30%;
    background: rgba(100,100,100,.65);
    border-radius: 10px;
    border: 8px solid rgba(0,0,0, 0.4);
    padding: 15px;
    z-index: 9999;
    text-align: center;
    font-size: 20px;
    color: #FEFEFE;
    text-shadow: 0 0 4px #000;
}

.xButton {
    position: absolute;
    right: 0;
    top: 0;
    color: #FDFDFD;
    font-family: Lato;
    font-weight: bold;
    font-size: 23px;
    border-radius: 9px;
    margin: 2px;
    cursor: pointer;
    text-shadow: none;
}

.promotion_text {
    position: absolute;
    right: 0;
    left: 0;
    top: 3;
    font-family: sans-serif;
    color: white;
    font-size: 16px;
    pointer-events: none;
}

.promotion_icon {
    display: inline-block;
    background-repeat: no-repeat;
    height: 100%;
    background-size: contain;
    width: 25%;
    background-position: center;
    cursor: pointer;
    opacity: .7;
    -webkit-transition: opacity 200ms;
            transition: opacity 200ms;
}

.mobile .promotion_icon {
    -webkit-transition: none;
            transition: none;
}

.promotion_icon:hover {
    background-color: rgba(89, 142, 222, .5);
    opacity: 1;
}

.chess_board .hoverSquare {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 5;
    pointer-events: none;
    opacity: .8;
}
.chess_board.catchClicks .hoverSquare {
    pointer-events: all!important;
}


/* These should match the rgba array. */
.chess_board .hoverSquare.blue {
    background-color: rgba(0, 0, 240, .6);
}
.chess_board .hoverSquare.red {
    background-color: rgba(240, 0, 0, .6);
}
.chess_board .hoverSquare.green {
    background-color: rgba(0, 240, 0, .6);
}
.chess_board .hoverSquare.yellow {
    background-color: rgba(240, 240, 0, .6);
}
.chess_board .hoverSquare.teal {
    background-color: rgba(0, 240, 240, .6);
}
.chess_board .hoverSquare.orange {
    background-color: rgba(240, 120, 0, .6);
}
.chess_board .hoverSquare.purple {
    background-color: rgba(120, 0, 120, .6);
}
.chess_board .hoverSquare.pink {
    background-color: rgba(240, 0, 240, .6);
}


.chess_board .focus_square_green .hoverSquare:before, .chess_board .focus_square_green .hoverSquare:after, .chess_board .focus_square_green.square:before, .chess_board .focus_square_green.square:after {
    border-color: rgb(0, 140, 0);
}
.chess_board .focus_square_red .hoverSquare:before, .chess_board .focus_square_red .hoverSquare:after, .chess_board .focus_square_red.square:before, .chess_board .focus_square_red.square:after {
    border-color: rgb(140, 0, 0);
}
.chess_board .focusSquare .hoverSquare:before {
    position: absolute;
    content: ' ';
    top: 0;
    left: 0;
    right: 80%;
    bottom: 80%;
    border-style:solid;
    border-width: 3px 0 0 3px;
    border-top-left-radius: 5px;
}
.chess_board .focusSquare .hoverSquare:after {
    position: absolute;
    content: ' ';
    top: 0;
    right: 0;
    left: 80%;
    bottom: 80%;
    border-style:solid;
    border-width: 3px 3px 0 0;
    border-top-right-radius: 5px;
}

.chess_board .focusSquare.square:before {
    position: absolute;
    content: ' ';
    bottom: 0;
    left: 0;
    right: 80%;
    top: 80%;
    border-style:solid;
    border-width: 0 0 3px 3px;
    border-bottom-left-radius: 5px;
}
.chess_board .focusSquare.square:after {
    position: absolute;
    content: ' ';
    bottom: 0;
    right: 0;
    left: 80%;
    top: 80%;
    border-style:solid;
    border-width: 0 3px 3px 0;
    border-bottom-right-radius: 5px;
}


.chess_board .dotSquare {
    background-repeat: no-repeat;
    background-position: 50%;
    background-size: 22%;
    /* Make the moveable squares look clickable. */
    cursor: pointer;
    pointer-events: all!important;
}

.chess_board .dot_square_red {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10.3" height="10.3"><path d="M10.132 5.133c0 2.758-2.236 4.994-4.994 4.994C2.38 10.127.144 7.89.144 5.133.144 2.375 2.38.14 5.138.14c2.758 0 4.994 2.235 4.994 4.993z" fill="%23c80000" fill-rule="evenodd" stroke="%23000" stroke-width="0.3" stroke-opacity=".3"/></svg>');
            transition: background-color 150ms;
    -webkit-transition: background-color 150ms;
}
.chess_board .dot_square_green {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10.3" height="10.3"><path d="M10.132 5.133c0 2.758-2.236 4.994-4.994 4.994C2.38 10.127.144 7.89.144 5.133.144 2.375 2.38.14 5.138.14c2.758 0 4.994 2.235 4.994 4.993z" fill="%2300c800" fill-rule="evenodd" stroke="%23000" stroke-width="0.3" stroke-opacity=".3"/></svg>');
            transition: background-color 150ms;
    -webkit-transition: background-color 150ms;
}
.chess_board .dot_square_green:hover {
    background-color: rgba(0, 240, 0, .2);
}
.chess_board .dot_square_red:hover {
    background-color: rgba(240, 0, 0, .2);
}

.chess_board.flipped, .chess_board.flipped .piece, .chess_board.flipped .notation {
    transform: rotateZ(180deg);
}