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:nth-child(2n),.bb-board.orientation-black .ranks :nth-child(2n),.bb-board.orientation-black .files :nth-child(odd){color:#745841}.bb-board.orientation-white .ranks :nth-child(2n),.bb-board.orientation-white .files :nth-child(odd),.bb-board.orientation-black .ranks :nth-child(odd),.bb-board.orientation-black .files :nth-child(2n){color:#c4ab88}.bb-board,.bb-pocket:not(:disabled){touch-action:none}.bb-pocket{display:flex;align-items:center;padding:0 5px 0 0;border:1px solid transparent;border-radius:4px;background:none;color:var(--text);font-size:13px;font-variant-numeric:tabular-nums;cursor:pointer}.bb-pocket img{width:30px;height:30px}.bb-pocket:hover:not(:disabled){background:var(--bg-raised)}.bb-pocket[aria-pressed=true]{border-color:var(--accent);background:var(--accent-bg)}.bb-pocket:disabled{opacity:1;cursor:default}.bb-history{list-style:none;margin:6px 0 0;padding:4px 0;height:80px;overflow-y:auto;border-top:1px solid var(--border);border-bottom:1px solid 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input[aria-invalid=true]{border-color:var(--danger)}.bb-reserves{display:grid;grid-template-columns:1fr 1fr;gap:8px}.bb-reserves label{display:flex;align-items:center;gap:6px;margin:0}.bb-reserves span{color:var(--text-dim);font-size:13px}.bb-fen-error{margin:0;font-size:13px;color:var(--danger)}.bb-fen-error:empty{display:none}.bb-outstanding{display:flex;align-items:center;gap:8px}.bb-set{margin-left:auto;flex:none}.bb-balance{margin:0;font-size:13px;color:var(--text-dim);display:flex;flex-wrap:wrap;gap:2px 12px}.bb-balance .extra{color:var(--danger)}.bb-info{flex:none;display:grid;place-items:center;width:20px;height:20px;border:1px solid var(--border-strong);border-radius:50%;color:var(--text-dim);font:italic 600 12px/1 Georgia,serif;cursor:help}.bb-nav{display:flex;gap:4px;margin-top:6px}.bb-nav .btn-icon{width:30px;height:28px;padding:6px}.bb-nav .btn-icon:disabled{opacity:.3}.bb-nav svg{width:14px;height:14px}.bb-board-panel.focused .bb-history{border-top-color:var(--accent)}@media(max-width:1000px),(max-height:600px){.bb-app{--board: min( calc(100vw - 32px) , 460px);grid-template-columns:minmax(0,1fr)}.bb-boards{flex-direction:column;align-items:center}}.bb-board-title{font-size:13px;font-weight:500;color:var(--text-dim);margin:0}