:root{--paper:#fafbf7;--ink:#26372c;--muted:#768071;--line:#e2e7dc;--lime:#d9ed99}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font:14px/1.45 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select{font:inherit;color:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:disabled{cursor:default;opacity:.5}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600}h1:focus{outline:none}:focus-visible{outline-offset:3px;outline:2px solid #718b43}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.site-shell{width:100%;max-width:780px;margin:auto;padding:0 20px 20px}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;min-height:48px;margin-bottom:10px;display:flex}.brand{letter-spacing:-1px;align-items:center;gap:7px;font-size:21px;font-weight:700;display:flex}.brand-mark{background:var(--lime);letter-spacing:-3px;border-radius:6px;place-items:center;width:24px;height:24px;padding-right:3px;font-size:20px;line-height:1;display:grid}.brand-dot{color:#809c51;margin-left:-6px}.primary,.secondary{border:1px solid var(--line);background:#fff;border-radius:6px;justify-content:center;align-items:center;gap:8px;min-height:36px;padding:8px 12px;font-size:13px;font-weight:500;display:inline-flex}.primary{background:var(--lime);border-color:var(--lime)}.primary:hover:not(:disabled){background:#cee489}.secondary:hover:not(:disabled){background:#f1f4eb}.text-button{color:var(--muted);background:0 0;border:0;padding:7px 4px;font-size:12px}.text-button:hover:not(:disabled){color:var(--ink)}.text-button.danger{color:#a35e4d}input:not([type=checkbox]),select{border:1px solid var(--line);background:#fff;border-radius:6px;width:100%;min-width:0;min-height:38px;padding:8px 10px;font-size:14px}input::placeholder{color:#9aa191}summary{-webkit-user-select:none;user-select:none;font-size:12px}summary::marker{color:#99a38f}.small-copy{color:var(--muted);margin-top:8px;font-size:12px}.notice{background:#eef2e3;border-radius:6px;margin:10px 0;padding:9px 12px;font-size:13px}.entry-card{width:100%;max-width:320px;margin:32px auto 0}.mode-tabs{border-bottom:1px solid var(--line);margin-bottom:16px;display:flex}.mode-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;flex:1;margin-bottom:-1px;padding:9px;font-size:13px}.mode-tabs button[aria-pressed=true]{color:var(--ink);border-color:var(--ink);font-weight:600}form label{margin:12px 0 5px;font-size:12px;display:block}.code-input{text-transform:uppercase;letter-spacing:2px}.submit{width:100%;margin-top:18px}.connection-help{color:var(--muted);justify-content:space-between;align-items:center;margin-top:8px;font-size:12px;display:flex}.room-toolbar{align-items:center;gap:14px;margin-left:auto;display:flex}.room-toolbar h1{color:var(--muted);border-right:1px solid var(--line);padding-right:10px;font-size:12px;font-weight:400}.room-code{font-variant-numeric:tabular-nums;letter-spacing:1px;color:var(--ink);margin-left:4px;font-size:12px;font-weight:600}.room-actions{align-items:center;gap:12px;display:flex}.invite-menu{position:relative}.invite-menu>summary{padding:7px 0;list-style:none}.invite-menu>summary::-webkit-details-marker{display:none}.invite-popover{border:1px solid var(--line);z-index:10;background:#fff;border-radius:8px;flex-wrap:wrap;gap:8px;width:min(340px,100vw - 40px);padding:12px;display:flex;position:absolute;top:100%;right:0;box-shadow:0 6px 20px #24362912}.invite-popover input{font-size:12px}.invite-popover .small-copy{margin:0}.room-layout{grid-template-columns:minmax(0,1fr) 200px;align-items:start;gap:24px;display:grid}.room-panel{border-left:1px solid var(--line);padding-left:16px}.participants>summary{justify-content:space-between;align-items:center;min-height:32px;list-style:none;display:flex}.participants>summary::-webkit-details-marker{display:none}.participants>summary:after{content:"+";color:var(--muted);margin-left:8px}.participants[open]>summary:after{content:"−"}.people-count{color:var(--muted);margin-left:auto;font-size:11px}.people-list{margin:3px 0 8px;padding:0;list-style:none}.people-list li{align-items:center;gap:7px;min-height:34px;display:flex}.avatar{background:#e7ecdc;border-radius:50%;flex-shrink:0;place-items:center;width:24px;height:24px;font-size:10px;display:grid}.color-1{background:#eee4d8}.color-2{background:#e1e9ec}.color-3{background:#eae2ef}.person-name{overflow-wrap:anywhere;flex-wrap:wrap;flex:1;align-items:center;gap:5px;min-width:0;font-size:12px;display:inline-flex}.host-badge,.win-badge,.turn-badge{color:#55644e;font-variant-numeric:tabular-nums;background:#edf1e6;border-radius:4px;align-items:center;padding:1px 6px;font-size:10px;font-weight:500;line-height:1.4;display:inline-flex}.win-badge{color:#3c5222;background:#e6f0c8}.turn-badge{color:#314626;background:#dfe7d4;font-weight:600}.turn-badge.mine{background:var(--lime);color:#1d2e14}.inline-confirm{color:var(--muted);align-items:center;gap:6px;font-size:12px;display:inline-flex}.ready-badge,.person-state{color:#6a8640;font-size:10px}.person-state{color:var(--muted)}.remove-button{color:#99a18e;background:0 0;border:0;min-height:30px;padding:5px;font-size:15px}.ready-button{width:100%;margin:4px 0 10px}.ready-button.selected{background:#edf3df;border-color:#dce7c7}.room-settings{border-top:1px solid var(--line);margin-top:8px;padding-top:8px}.room-settings>summary{color:var(--muted);padding:5px 0}.room-settings>.text-button{align-items:center;gap:6px;width:100%;display:flex}.lock-button{color:var(--ink);margin-top:2px}.lock-icon{flex-shrink:0}.confirmation{margin-top:6px;font-size:12px}.confirmation .text-button{margin-right:10px}.checkers-section{min-width:0;scroll-margin-top:10px}.game-title{justify-content:space-between;align-items:center;gap:16px;min-height:32px;margin-bottom:8px;display:flex}.game-title h2{font-size:16px}.rules-menu{color:var(--muted);position:relative}.rules-menu>summary{padding:6px 0}.rules-menu ul{border:1px solid var(--line);z-index:5;width:min(320px,100vw - 40px);color:var(--muted);background:#fff;border-radius:6px;margin:0;padding:12px 14px 12px 28px;font-size:12px;line-height:1.6;position:absolute;top:100%;right:0;box-shadow:0 5px 18px #26372c0c}.rules-menu li+li{margin-top:6px}.game-setup{padding:6px 0 12px}.seat-selectors{align-items:center;gap:8px;margin-bottom:12px;display:flex}.seat-selectors label{min-width:0;color:var(--muted);flex:1;font-size:12px}.seat-selectors select{margin-top:5px;font-size:13px;display:block}.swap-seats{color:var(--muted);background:0 0;border:0;margin-top:20px;padding:6px;font-size:20px}.setup-controls>.primary{min-width:100px}.waiting-start{color:var(--muted);padding:8px 0;font-size:13px}.match-shell{width:min(100%,500px,100svh - 180px);min-width:260px;margin:auto}.match-status{border:1px solid var(--line);background:#eef1e8;border-radius:6px;flex-wrap:wrap;align-items:center;gap:4px 10px;min-height:34px;margin-bottom:6px;padding:4px 10px;display:flex}.match-status h3{font-size:13px}.match-status.your-turn{background:var(--lime);color:#1c2d14;border-color:#bdd672}.match-status.your-turn .status-hint{color:#344c24;font-weight:500}.match-status.your-turn h3:before{content:"";vertical-align:middle;background:#3c5c1e;border-radius:50%;width:8px;height:8px;margin-right:7px;animation:1.2s ease-in-out infinite turn-pulse;display:inline-block}.match-status.waiting-turn{color:var(--muted)}.spectating,.status-hint{color:var(--muted);font-size:11px}.match-status .text-button{margin-left:auto;padding:2px 0;font-size:11px}@keyframes turn-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.65;transform:scale(1.3)}}.board-player{border-radius:6px;align-items:center;gap:7px;min-height:32px;margin:3px 0;padding:2px 8px;transition:background .15s,opacity .15s;display:flex}.board-player.active-turn{background:#eef4dc;box-shadow:inset 0 0 0 1px #cfe0a2}.board-player.inactive-turn{opacity:.65}.board-player strong{overflow-wrap:anywhere;font-size:12px;font-weight:600}.you{color:var(--muted);font-size:11px;font-weight:400}.piece-count{color:var(--muted);font-variant-numeric:tabular-nums;margin-left:auto;font-size:11px}.piece-token{background:#f1edd7;border:2px solid #e1dcc1;border-radius:50%;flex-shrink:0;width:16px;height:16px;display:block}.piece-token.black{background:#354c3b;border-color:#4d6453}.checkerboard{aspect-ratio:1;border:4px solid #354b3d;border-radius:6px;grid-template-columns:repeat(8,1fr);width:100%;transition:box-shadow .15s;display:grid;overflow:hidden}.checkerboard.your-turn-board{box-shadow:0 0 0 3px var(--lime)}.square{aspect-ratio:1;touch-action:manipulation;border:0;border-radius:0;place-items:center;min-width:0;padding:0;display:grid;position:relative}.square.light{background:#ecebda}.square.dark{background:#7c977a}.square:disabled{opacity:1;cursor:default}.square.selected-square{background:#b0c66a;box-shadow:inset 0 0 0 3px #dcee8a}.square.last-move{background:#a2b57f}.square.last-move-end{z-index:3}.square:focus-visible{outline-offset:-3px;z-index:2;outline:3px solid #182c22}.square[data-can-start=true]:hover{box-shadow:inset 0 0 0 3px #d9ef86}.checker-piece,.captured-ghost{will-change:transform;background:#f9f6e6;border:2px solid #fff7dc;border-radius:50%;place-items:center;width:74%;height:74%;display:grid;position:relative;box-shadow:0 2px #b8b8a2,0 3px 4px #26372e35,inset 0 0 0 2px #e6e4cf}.checker-piece.black,.captured-ghost.black{background:#2a3b33;border-color:#496053;box-shadow:0 2px #15271c,0 3px 4px #26372e55,inset 0 0 0 2px #344f3f}.checker-piece.captured-preview{opacity:.3}.captured-ghost{pointer-events:none;animation:.36s ease-out forwards capture-fade}@keyframes capture-fade{0%{opacity:.75;transform:scale(1)}to{opacity:0;transform:scale(.35)}}.crown{color:#889b4b;font-size:clamp(18px,2.5vw,30px);line-height:1}.black .crown{color:#d9ef86}.destination-dot{background:#dcec89;border:2px solid #e9f6b7;border-radius:50%;width:30%;height:30%;position:absolute;box-shadow:0 0 0 3px #3f5e3c55}.rank-coordinate,.file-coordinate{color:#344f3f;z-index:1;pointer-events:none;font-size:8px;line-height:1;position:absolute}.rank-coordinate{top:3px;left:3px}.file-coordinate{bottom:2px;right:3px}.board-tools{border-top:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:12px;padding-top:4px;display:flex}.board-tools summary{color:var(--muted);padding:6px 0}.history-menu{flex:1;min-width:0}.history-menu summary span{margin-left:4px;font-size:11px}.history-menu ol{color:var(--muted);margin:0;padding:2px 0;font-size:11px;line-height:1.8;list-style:none}.match-menu{text-align:right}.match-actions{flex-direction:column;align-items:flex-end;gap:0;display:flex}.draw-offer{background:#eef2e3;border-radius:6px;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;padding:8px;font-size:12px;display:flex}@media (max-width:700px){.site-shell{padding:0 12px 12px}.site-header{min-height:44px;margin-bottom:8px}.brand{font-size:18px}.brand-mark{width:20px;height:20px}.room-toolbar{gap:10px}.room-toolbar h1{padding-right:8px}.room-actions{gap:10px}.room-layout{grid-template-columns:minmax(0,1fr);gap:12px}.room-panel{border-left:0;border-top:1px solid var(--line);padding:6px 0 0}.room-layout:not(.in-game) .room-panel{order:-1}.room-panel .ready-button{width:auto;min-width:110px;margin:4px 0}.participants>summary{min-height:32px}.people-list{margin-bottom:4px}.room-settings{margin-top:6px}.entry-card{margin-top:20px}.match-shell{width:100%;min-width:0}.game-title{margin-bottom:2px}.board-player{min-height:28px}.checkerboard{border-width:3px}.invite-popover{width:min(320px,100vw - 24px);right:-40px}.rules-menu ul{width:min(300px,100vw - 24px)}.ready-button,.primary,.secondary,input:not([type=checkbox]),select{min-height:40px}input:not([type=checkbox]),select{font-size:16px}.invite-popover input{font-size:12px}.seat-selectors select{font-size:14px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}.catalog{padding-top:2px}.catalog-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;display:flex}.catalog-heading h1{font-size:16px}.game-catalog{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none;display:grid}.game-catalog li{min-width:0}.catalog-game{text-align:left;border:1px solid var(--line);background:#fff;border-radius:8px;align-items:center;gap:10px;width:100%;height:100%;min-height:90px;padding:12px;display:flex}.catalog-game.available{background:#f0f6e2;border-color:#cadca1}.catalog-game.available:hover{background:#e9f1d4;border-color:#adc67b}.catalog-game:disabled{opacity:1;cursor:default}.catalog-icon{color:#87937b;flex-shrink:0;place-items:center;width:32px;height:32px;display:grid}.catalog-game.available .catalog-icon{color:#5c783a}.catalog-game-info{flex-direction:column;gap:4px;min-width:0;display:flex}.catalog-game-info strong{font-size:13px;font-weight:500;line-height:1.35}.catalog-status{color:var(--muted);font-size:11px}.catalog-game.available .catalog-status{color:#5d7837}.catalog-arrow{color:#6d8847;margin-left:auto;font-size:18px}.entry-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;display:flex}.entry-heading h1{font-size:15px}.entry-heading .text-button{padding-left:0}@media (max-width:600px){.game-catalog{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.catalog-game{gap:8px;min-height:88px;padding:10px}.catalog-icon{width:24px;height:28px}.catalog-icon svg{width:22px;height:22px}.catalog-game-info strong{font-size:12px}.catalog-arrow{display:none}}.site-footer{border-top:1px solid var(--line);color:var(--muted);justify-content:center;margin-top:16px;padding-top:10px;font-size:11px;display:flex}.site-footer a{align-items:center;gap:6px;min-height:32px;display:inline-flex}.site-footer a:hover{color:var(--ink)}.arena-section{min-width:0}.arena-setup,.match-setup{padding:4px 0 12px}.arena-setup fieldset,.match-setup fieldset{border:0;margin:0 0 12px;padding:0}.arena-setup legend,.match-setup legend{color:var(--muted);margin-bottom:8px;font-size:12px}.arena-setup label,.match-setup label{align-items:center;gap:8px;padding:5px 0;font-size:13px;display:flex}.arena-setup label span,.match-setup label span{color:var(--muted);margin-left:auto;font-size:11px}.arena-setup .arena-size{max-width:300px;color:var(--muted);justify-content:space-between;margin-bottom:12px;font-size:12px;display:flex}.arena-size select{width:auto;min-width:180px;font-size:13px}.arena-setup input,.match-setup input[type=checkbox]{accent-color:#668843;width:16px;height:16px}.arena-status{justify-content:space-between;align-items:center;gap:10px;min-height:30px;display:flex}.arena-status h3{font-size:13px}.arena-status>span{color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px}.arena-legend{flex-wrap:wrap;gap:5px 12px;margin:4px 0 10px;display:flex}.fighter-label{align-items:center;gap:5px;font-size:11px;display:inline-flex}.fighter-label small{color:var(--muted);font-size:10px}.fighter-label.out{opacity:.45;text-decoration:line-through}.slot-0{--fighter:#4b8b65}.slot-1{--fighter:#ce7747}.slot-2{--fighter:#547fb4}.slot-3{--fighter:#9b6aaf}.fighter-color{background:var(--fighter);border-radius:50%;width:9px;height:9px}.arena-board{grid-template-columns:repeat(var(--arena-cols),1fr);touch-action:none;outline-offset:3px;background:#ebe8d6;border:4px solid #344b3c;border-radius:7px;width:100%;display:grid;position:relative;overflow:hidden}.arena-tile{aspect-ratio:1;min-width:0;box-shadow:inset 0 0 0 1px #879b7420}.arena-tile.tile-0{background:#e8e6cf}.arena-tile.tile-1{background:#60755d;border:1px solid #4c6149;box-shadow:inset 0 2px #80916b,inset 0 -3px #455b48,inset 1px 0 #4d654c}.arena-tile.tile-2{background:linear-gradient(45deg,#0000 43%,#a7804b 44% 55%,#0000 56%),linear-gradient(-45deg,#0000 43%,#a7804b 44% 55%,#0000 56%),#cbb07c;border:3px solid #b7955b;box-shadow:inset 0 0 0 1px #ead3a1}.arena-object{pointer-events:none;place-items:center;display:grid;position:absolute}.arena-bomb{z-index:2}.bomb-glyph{background:#263c33;border-radius:50%;flex-shrink:0;width:21px;height:21px;display:inline-block;position:relative;box-shadow:inset -4px -3px #192d25}.bomb-glyph:before{content:"";border-top:2px solid #b68036;border-right:2px solid #b68036;border-radius:0 5px 0 0;width:7px;height:7px;position:absolute;top:-5px;right:1px;transform:rotate(-20deg)}.arena-bomb .bomb-glyph{width:62%;height:62%;animation:.65s ease-in-out infinite bomb-pulse}@keyframes bomb-pulse{50%{background:#634a2b;transform:scale(1.12)}}.arena-flame{z-index:3;background:#ffd267;border-radius:15%;animation:.15s infinite alternate flame-flash;box-shadow:inset 0 0 8px #ed7a27}.arena-flame:after{content:"";background:#fff3ac;border-radius:40%;width:45%;height:45%}@keyframes flame-flash{to{background:#ffb547;transform:scale(.91)}}.arena-fighter{z-index:4;transition:left .12s linear,top .12s linear}.arena-fighter>span{background:var(--fighter);color:#fff;border:2px solid #ffffff85;border-radius:38%;place-items:center;width:72%;height:72%;font-size:clamp(10px,1.4vw,16px);font-weight:700;display:grid;box-shadow:0 2px #24372d55}.arena-fighter.is-me>span{outline-offset:1px;outline:2px solid #f6fbc6}.arena-power{z-index:1}.arena-power>span{color:#486329;background:#e2efad;border:1px solid #809d49;border-radius:5px;place-items:center;width:60%;height:60%;font-size:16px;font-weight:700;display:grid}.arena-power.range>span{color:#80602a;background:#f5dc9c;border-color:#b89646}.arena-countdown{color:#fff;z-index:6;pointer-events:none;background:#25372955;place-items:center;font-size:64px;font-weight:800;display:grid;position:absolute;inset:0}.arena-controls{touch-action:none;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;gap:24px;margin:12px 0 8px;display:flex}.direction-pad{grid-template-rows:repeat(2,42px);grid-template-columns:repeat(3,42px);gap:4px;display:grid}.direction-pad button{border:1px solid var(--line);touch-action:none;-webkit-user-select:none;user-select:none;background:#f0f3e8;border-radius:7px;font-size:23px}.direction-pad button:active:not(:disabled){background:var(--lime)}.direction-up{grid-column:2}.direction-left{grid-area:2/1}.direction-down{grid-area:2/2}.direction-right{grid-area:2/3}.bomb-control{flex-direction:column;align-items:center;gap:5px;display:flex}.drop-bomb{touch-action:none;gap:12px;min-width:96px;min-height:52px}.bomb-control>span{color:var(--muted);font-size:10px}.arena-bottom{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:12px;padding-top:6px;font-size:11px;display:flex}.arena-bottom summary{font-size:11px}@media (max-width:700px){.direction-pad{grid-template-rows:repeat(2,44px);grid-template-columns:repeat(3,44px)}.arena-controls{margin:10px 0}.arena-tile.tile-2{border-width:2px}.arena-fighter>span{border-width:1px;font-size:11px}.arena-board{border-width:3px}.drop-bomb{min-width:96px;min-height:58px}}@media (prefers-reduced-motion:reduce){.arena-fighter{transition:none}.arena-bomb .bomb-glyph,.arena-flame{animation:none}}.match-section{min-width:0}.match-setup .match-options{flex-wrap:wrap;gap:8px 16px;margin-bottom:12px;display:flex}.match-setup .match-options label{color:var(--muted);flex-direction:column;align-items:flex-start;gap:4px;padding:0;font-size:12px;display:flex}.match-setup .match-options select{width:auto;min-width:160px;font-size:13px}