:root {
	--red: #ff4444;
	--blue: #4444ff;
	--glow: hsl(45 100% 60%);
}

* {
	box-sizing: border-box;
}

#game-report { font: 12pt Arial, sans-serif; }
#game-report h3 { color: #1F78B4; font-size: 100%; }

/* Game container of the game grid/table */
#game-container { 
	--_cell-size: 4rem;
	--_header-size: 1.5rem;
	--_piece-padding: 0.25rem;
	--_captured-scale: 0.7;
	--_captured-padding: 0.25rem;
	--_captured-overlap: 0.6;

	position: relative;
	text-align: center;
	padding: calc(var(--_cell-size) * var(--_captured-scale) + 2 * var(--_captured-padding)) 0;
}

#game-grid {
    border-collapse: collapse;
}

#game-grid * {
	margin: 0;
	padding: 0;
}

#game-grid td {
	width: var(--_cell-size);
	height: var(--_cell-size);
	min-width: var(--_cell-size);
	min-height: var(--_cell-size);
	border: 2px solid currentColor;
}

#game-grid tbody tr:nth-child(-n + 2) > td {
 	color: var(--red);
}

#game-grid tbody tr:nth-child(3) > td {
 	border-top: none;
}

#game-grid tbody tr:nth-last-child(-n + 2) > td {
 	color: var(--blue);
}

#game-grid tbody tr:nth-last-child(3) > td {
 	border-bottom: none;
}

#game-grid thead th {
  	height: var(--_header-size);
  	min-height: var(--_header-size);
}

#game-grid tbody th {
  	width: var(--_header-size);
  	min-width: var(--_header-size);
}

#pieces {
	position: absolute;
	width: 100%;
	height: 100%;
	left: 0;
	top: 0;
}

.piece {
	left: 0;
	top: 0;
	position: absolute;
  	width: calc(var(--_cell-size) - var(--_piece-padding) * 2);
  	height: calc(var(--_cell-size) - var(--_piece-padding) * 2);
	border-radius: 100%;

  	box-shadow: 0 0 6px rgba(0, 0, 0, 0.33);
}

.piece.on-board {
	transform: translate(calc(var(--_header-size) + var(--_col) * var(--_cell-size) + var(--_piece-padding)),
	                     calc(var(--_header-size) + var(--_cell-size) * var(--_captured-scale) + 2 * var(--_captured-padding) + var(--_row) * var(--_cell-size) + var(--_piece-padding)));
	z-index: 100;
}

.piece.move-transition {
	transition: transform 0.4s;
	z-index: 101;
}

.piece.captured {
/*	transition: transform 0.4s;*/
	transform: translate(calc(var(--_captured-index) * var(--_captured-scale) * var(--_cell-size) * var(--_captured-overlap)), var(--_translate-y)) scale(var(--_captured-scale));
	z-index: var(--_captured-index);
}

.piece.captured.blue {
	--_translate-y: calc((var(--_captured-scale) * var(--_cell-size) + var(--_captured-padding) * 3 + var(--_header-size) + var(--_cell-size) * var(--_board-height)));
}

.piece.captured.red {
	--_translate-y: var(--_captured-padding);
}

.piece.red {
	background-color: var(--red);
	color: rgb(40, 40, 40);
}

.piece.blue {
	background-color: var(--blue);
	color: rgb(230, 230, 230);
}

.piece.captured.blue.piece-w {
	background-color: var(--red);
}

.piece.captured.red.piece-w {
	background-color: var(--blue);
}

.piece::after {
	display: inline-block;
	align-content: center;
	height: 100%;
}

.piece-f::after {
	content: '1·1';
} 

.piece-d::after {
	content: '0·2';
}

.piece-a::after {
	content: '2·2';
}

.piece-n::after {
	content: '1·2';
}

.piece-w {
	border: 2px solid var(--glow);
  	box-shadow: 0 0 7px var(--glow);
}

.piece-w::after {
	content: '0·1';
	color: var(--glow);
}

/* button bar */
#game-report .button-bar {
	width: max-content;
	margin: 1em auto;
}
#game-report .button-bar button {
	background-color: #E0E0E0;
	background-image: linear-gradient(to bottom, #DDDDDD, #CCCCCC);
	border: none;
	display: inline-block;
	font-size: 14px;
	font-weight: 400;
	line-height: 1.428;
	margin: 0;
	padding: .5em 1.5em;
	text-align: center;
	white-space: nowrap;
}
#game-report .button-bar button:hover, #game-report .button-bar button:focus, #game-report .button-bar button:active {
	background-color: #FF9800;
	background-image: linear-gradient(to bottom, #FF9800, #EE8800);
	color: #FFFFFF;
	cursor: pointer;
}
#game-report .button-bar button:active {
	background-color: #EF6C00;
	background-image: linear-gradient(to bottom, #EF6C00, #DF5C00);
}

/* move table */
#move-table { vertical-align: top; padding-left: 1em; }
#move-table > div {
    max-height: 752px;
    overflow-y: auto;
	width: 300px;
}

#move-table table {
    border-collapse: collapse;
    margin: 0 auto;
    width: 285px;
}

#move-table tr { cursor: pointer; }
#move-table tr.zebra { background-color: #e5e8ff; }
#move-table tr#cur-move th { border-right: none;}
#move-table tr#cur-move td { border-left: none; border-right: none; }
#move-table tr#cur-move td:last-child { border-right: 1px solid #bbb; }

#move-table tr#cur-move {
    background: #A8D800;
    cursor: default;
    border-left: none;
    border-right: none;
}

#move-table td, #move-table th {
    border: 1px solid #ddd;
    padding: 5px 5px;
    font-size: 12px;
    text-align: center;
}

#move-table td { font-family: monospace; }
#move-table tbody th { text-align: right; width: 1em; }

#move-table thead th {
    background-color: #eeeeee;
    padding-left: 2px;
    padding-right: 2px;
}