/* Checkers: board, pieces, player bars, dialogs. Layout and the result card come from cb-arcade.css. */
.ck-page { --light: #f0dcb4; --dark: #8a5a3b; --last: rgba(255, 214, 0, .38); --sel: rgba(47, 160, 90, .55); --dot: rgba(255, 245, 220, .55); }
.ck-page [hidden] { display: none !important; }

.ck-tabs { display: flex; gap: 6px; margin: 0 0 10px; background: var(--cbx-soft); padding: 4px; border-radius: 14px; }
.ck-tabs button { flex: 1; border: 0; background: transparent; padding: 10px 8px; border-radius: 11px; font: 900 15px var(--cbx-body); color: var(--cbx-muted); cursor: pointer; }
.ck-tabs button[aria-selected="true"] { background: #fff; color: var(--cbx-ink); box-shadow: 0 2px 6px rgba(42, 29, 23, .12); }

.ck-card { padding: 12px; }
.ck-player { display: flex; align-items: center; gap: 10px; min-height: 40px; padding: 4px 4px; font: 900 15px var(--cbx-body); }
.ck-player .dot, .ck-player .disc, .ck-colors .disc { width: 14px; height: 14px; border-radius: 50%; flex: none; display: inline-block; }
.ck-player .dot.b, .ck-player .disc.b, .ck-colors .disc.b { background: #2a211c; box-shadow: inset 0 0 0 2px #000; }
.ck-player .dot.w, .ck-player .disc.w, .ck-colors .disc.w { background: #f6ead2; box-shadow: inset 0 0 0 2px #8a6b4a; }
.ck-player .nm { flex: none; max-width: 42%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ck-player .caps { flex: 1; min-width: 0; display: flex; align-items: center; gap: 4px; font: 900 14px var(--cbx-body); color: #6b5a4e; }
.ck-player .left { font: 800 13px var(--cbx-body); color: var(--cbx-muted); white-space: nowrap; }
.ck-player.turn .nm::after { content: ' • to move'; color: var(--cbx-good); font-size: 13px; }

.ck-board { position: relative; display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr); width: min(100%, 520px); aspect-ratio: 1; margin: 0 auto; border-radius: 10px; overflow: hidden; box-shadow: 0 0 0 3px #5a3a24, 0 12px 30px rgba(42, 29, 23, .25); user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.ck-sq { position: relative; border: 0; padding: 0; margin: 0; display: grid; place-items: center; min-width: 0; min-height: 0; -webkit-tap-highlight-color: transparent; }
.ck-sq.l { background: var(--light); }
.ck-sq.d { background: var(--dark); cursor: pointer; }
.ck-sq.last::before, .ck-sq.sel::before, .ck-sq.trail::before { content: ''; position: absolute; inset: 0; background: var(--last); }
.ck-sq.sel::before { background: var(--sel); }
.ck-sq.trail::before { background: rgba(47, 160, 90, .28); }
.ck-sq .no { position: absolute; left: 3px; top: 2px; z-index: 1; font: 900 9px var(--cbx-body); color: var(--light); opacity: .55; pointer-events: none; }
.ck-sq .pc { position: relative; z-index: 1; width: 78%; height: 78%; border-radius: 50%; display: grid; place-items: center; transition: transform .12s; pointer-events: none; }
.ck-sq .pc.b { background: radial-gradient(circle at 50% 40%, #4a3c33, #241b16 70%); box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .08), inset 0 0 0 6px rgba(0, 0, 0, .25), 0 3px 0 #0d0907, 0 5px 6px rgba(0, 0, 0, .35); }
.ck-sq .pc.w { background: radial-gradient(circle at 50% 40%, #fffaf0, #eadbbd 70%); box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .5), inset 0 0 0 6px rgba(138, 107, 74, .25), 0 3px 0 #a88a66, 0 5px 6px rgba(0, 0, 0, .3); }
.ck-sq .pc svg { width: 54%; height: 54%; }
.ck-sq .pc.b svg { fill: #ffd66b; } .ck-sq .pc.w svg { fill: #c0912a; }
.ck-sq .pc.gone { opacity: .3; transform: scale(.85); }
.ck-sq.sel .pc { transform: scale(1.08); }
.ck-sq.must .pc { animation: ck-glow 1.2s ease-in-out infinite; }
@keyframes ck-glow { 50% { box-shadow: 0 0 0 4px #ffd66b, 0 0 14px 4px rgba(255, 214, 107, .8); } }
.ck-sq.move::after { content: ''; position: absolute; z-index: 2; width: 30%; height: 30%; border-radius: 50%; background: var(--dot); }
.ck-sq.move.take::after { width: 42%; height: 42%; background: transparent; box-shadow: inset 0 0 0 4px #ffd66b; }
.ck-board.locked .ck-sq { cursor: default; }
.ck-board.flash { animation: ck-flash .5s; }
@keyframes ck-flash { 50% { box-shadow: 0 0 0 3px #5a3a24, 0 0 0 9px rgba(255, 77, 77, .5); } }

.ck-status, .cbx-card .ck-status { margin: 10px 0 0; min-height: 24px; text-align: center; font: 900 16px var(--cbx-body); color: var(--cbx-ink); }
.cbx-card .ck-status.good { color: var(--cbx-good); } .cbx-card .ck-status.bad { color: var(--cbx-bad); }
.ck-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 10px; }
.ck-actions .cbx-btn { min-height: 46px; }
.ck-send { display: grid; gap: 8px; margin-top: 10px; }
.ck-level { display: flex; gap: 6px; justify-content: center; margin-top: 10px; }
.ck-level button { border: 0; padding: 8px 14px; border-radius: 999px; background: var(--cbx-soft); font: 900 14px var(--cbx-body); color: var(--cbx-muted); cursor: pointer; }
.ck-level button[aria-pressed="true"] { background: var(--cbx-accent); color: #fff; }
.ck-moves { margin: 12px 0 0; padding: 8px 10px; border-radius: 12px; background: var(--cbx-soft); font: 800 14px/1.7 var(--cbx-body); color: var(--cbx-ink-2); max-height: 84px; overflow-y: auto; word-spacing: 2px; }
.ck-moves:empty { display: none; }
.ck-moves b { color: var(--cbx-muted); font-weight: 900; }
.ck-banner, .cbx-card .ck-banner { margin: 0 0 10px; padding: 10px 12px; border-radius: 12px; background: #3a1f14; color: #fff; font: 800 14px/1.4 var(--cbx-body); }
.ck-banner b { color: #ffd66b; }

.ck-dlg { border: 0; padding: 0; border-radius: 22px; width: min(420px, calc(100vw - 32px)); box-shadow: 0 30px 80px rgba(0, 0, 0, .35); }
.ck-dlg [hidden] { display: none !important; }
.ck-dlg::backdrop { background: rgba(42, 29, 23, .45); }
.ck-dlg-card { padding: 20px; }
.ck-dlg h2 { margin: 0 0 6px; font: 900 22px var(--cbx-display); }
.ck-dlg p { margin: 0 0 12px; font: 800 15px/1.45 var(--cbx-body); color: var(--cbx-muted); }
.ck-field { display: grid; gap: 4px; margin: 0 0 10px; font: 900 13px var(--cbx-body); color: var(--cbx-ink-2); }
.ck-field input { font: 800 17px var(--cbx-body); padding: 11px 12px; border: 2px solid var(--cbx-line); border-radius: 12px; }
.ck-colors { display: flex; gap: 8px; margin: 4px 0 10px; }
.ck-colors label { flex: 1; display: grid; place-items: center; gap: 4px; padding: 10px 6px; border-radius: 12px; border: 2px solid var(--cbx-line); font: 900 13px var(--cbx-body); cursor: pointer; text-align: center; }
.ck-colors input { display: none; }
.ck-colors label:has(input:checked) { border-color: #c2410c; background: #fff1e8; }
.ck-colors .disc { width: 28px; height: 28px; }
.ck-colors .disc.r { background: linear-gradient(90deg, #2a211c 50%, #f6ead2 50%); box-shadow: inset 0 0 0 2px #8a6b4a; }
.ck-colors small { font: 800 11px var(--cbx-body); color: var(--cbx-muted); }
.ck-dlg-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 10px; flex-wrap: wrap; }
.ck-mine { margin-top: 14px; border-top: 2px solid var(--cbx-line); padding-top: 10px; }
.ck-mine h3 { margin: 0 0 6px; font: 900 14px var(--cbx-body); }
.ck-mine ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.ck-mine a { display: block; padding: 9px 12px; border-radius: 10px; background: var(--cbx-soft); font: 800 14px var(--cbx-body); color: var(--cbx-ink); text-decoration: none; }
.ck-result { margin-top: 12px; }