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@media(min-width:1500px){.app-shell{max-width:1380px}main{grid-template-columns:minmax(0,1fr) 350px;gap:45px}}
@media(max-width:1000px){.app-shell{padding:0 24px}main{grid-template-columns:minmax(0,1fr) 290px;gap:24px}.rule-tag{display:none}.keyboard-hint{display:none!important}.board-bottom>span:last-child{display:none}.komi-row{gap:6px}.komi-row>span{font-size:10px}}
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@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
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.lesson-board{background-image:none}.lesson-lines{position:absolute;inset:0;width:100%;height:100%;stroke:#705433;stroke-width:.4;pointer-events:none}.lesson-coordinate{position:absolute;font:10px ui-monospace,monospace;color:#513719;transform:translate(-50%,-50%);pointer-events:none}.lesson-liberty:after{content:'';width:40%;height:40%;border:2px solid #1877b8;border-radius:50%;background:#b2e5ff88}
.finish-guide{padding:15px;border:1px solid #45616a;border-radius:8px;background:#102b34;margin:0 0 14px}.finish-guide>strong{font-size:13px;color:#f4c69b}.finish-guide p{font-size:12px;color:#b9cbd1;line-height:1.85;margin:9px 0}.finish-guide summary{font-size:12px;color:#dfebef;cursor:pointer}.end-steps{list-style:none;display:flex;gap:5px;margin:12px 0;padding:0;flex-wrap:wrap}.end-steps li{font-size:11px;color:#93aab4;padding:5px;border-bottom:2px solid #3c535d}.end-steps .current{color:#ffe2be;border-color:#ffa365}@media(max-width:760px){.finish-guide{grid-row:6}.actions,.scoring-panel{grid-row:7}.utility-actions{grid-row:8}.text-button{grid-row:9}.rules{grid-row:10}.provenance{grid-row:11}}
.match-strip #end-help{padding:6px 9px;background:#15323a;border:1px solid #62818b;color:#e6d2b5;border-radius:5px;font-size:11px;min-height:32px;white-space:nowrap}.match-strip #board-move{margin-left:auto}@media(max-width:370px){.match-strip{gap:6px}.match-strip #board-move{font-size:10px}.match-strip #end-help{font-size:10px;padding:5px}}
/* Keep the full board in view and give match actions priority. */
.game-panel{display:flex;flex-direction:column;min-width:0}.game-panel>*{grid-row:auto}.panel-heading{margin-bottom:8px}.status-block{padding:4px 0 12px}.status-block h2{margin:5px 0;font-size:20px}.status-block p{font-size:12px;line-height:1.65}.players{grid-template-columns:repeat(2,minmax(0,1fr))}.player{flex-wrap:wrap;gap:7px;padding:10px 8px;align-content:start;min-height:76px}.player-stone{width:28px;height:28px}.player strong{font-size:11px}.player>div>span{font-size:10px}.turn-tag{width:100%;margin:0 0 0 35px;font-size:10px}.match-stats{margin:13px 3px;gap:16px}.match-stats>div{gap:5px}.match-stats strong{font-size:20px}.actions button,.utility-actions button{min-height:43px;padding:10px 8px}.utility-actions{margin-top:8px}.text-button{margin:0 auto;padding:9px 8px}.game-panel .settings{border-top:1px solid var(--line);padding-top:15px;margin-top:6px;margin-bottom:15px}.mode-switch{margin-bottom:12px}.mode-switch button{padding:9px 5px}.ai-settings{margin-bottom:14px}.setting-heading{margin-bottom:8px}.level-description{margin:7px 0 4px}.level-grid button{min-height:33px}.size-switch button{min-height:34px}.komi-row{margin-top:9px}.learn-card{padding:0;margin:0;background:#132c32;border-color:#3c5962;border-radius:8px}.learn-summary{display:flex;align-items:center;justify-content:space-between;gap:8px;cursor:pointer;padding:14px;list-style:none;font-size:12px}.learn-summary::-webkit-details-marker{display:none}.learn-summary:after{content:'+';font-size:18px;color:#b4c9cf}.learn-card[open]>.learn-summary:after{content:'−'}.learn-summary>span{margin-left:auto;color:#9eb6bf;font-size:10px}.learn-body{padding:0 14px 14px}.learn-body .primary-button{margin-top:0;min-height:40px;font-size:12px}.learn-body #inspect-stones{font-size:12px}.learn-body .rules{margin-top:16px;padding-top:13px}.learn-body .finish-guide{margin:15px 0 0;padding:13px}.learn-card .rules summary{font-size:12px}.learn-card .rules p,.learn-card .finish-guide p{font-size:12px}.learn-card .finish-guide details{padding-top:6px}.learn-card .finish-guide summary{font-size:12px}.game-panel>.scoring-panel{margin-top:0;margin-bottom:6px}
@media(min-width:761px){.header{height:64px}main{padding-top:20px;gap:30px}.app-shell{padding-left:28px;padding-right:28px}.play-section{width:min(100%,calc(100dvh - 310px));margin-inline:auto;align-self:start;position:sticky;top:18px}.board-heading{margin-bottom:12px}.board-heading .eyebrow{margin-bottom:6px}.board-heading h1{font-size:24px;line-height:1.3}.rule-tag{font-size:11px}.match-strip{min-height:24px;margin-bottom:10px}.board-frame{padding:10px}.board-caption{margin-top:18px;font-size:10px}.notice{margin-top:13px;min-height:38px;padding:9px 11px;font-size:12px;line-height:1.6}.board-bottom{padding-top:9px;font-size:10px}.board-caption .keyboard-hint{display:none}.coordinates{font-size:10px}.horizontal{bottom:1%;height:13px}.vertical{left:0;width:18px}}
@media(min-width:761px) and (max-height:600px){.play-section{width:100%;position:static}}
@media(max-width:760px){.game-panel{display:flex;gap:0}.game-panel .settings{padding-top:16px;margin-top:8px;margin-bottom:17px}.game-panel .status-block{padding-bottom:13px}.learn-summary{padding:14px}.board-frame{width:100%}}
@media(min-width:761px){.app-shell{max-width:min(1240px,calc(100dvh + 106px))}main{grid-template-columns:minmax(0,1fr) 330px}}@media(min-width:761px) and (max-height:600px){.app-shell{max-width:1240px}}

/* Give the playing surface the available desktop height. */
.game-panel>.notice{margin:0 0 10px;padding:6px 9px;min-height:0;font-size:11px}
.game-panel>.board-bottom{padding:0 0 10px;font-size:10px;flex-wrap:wrap}
@media(min-width:761px){
.app-shell{max-width:min(1540px,calc(100dvh + 300px));padding-inline:20px}
.header{height:48px}.brand-mark{width:30px;height:30px}.brand{font-size:17px}.icon-button{width:34px;height:34px}
main{padding-top:10px;gap:24px;grid-template-columns:minmax(0,1fr) 330px}
.play-section{width:min(100%,calc(100dvh - 160px));top:10px}
.board-heading{align-items:center;margin-bottom:5px}.board-heading>div{display:flex;align-items:center;gap:10px}
.board-heading .eyebrow{margin:0;font-size:9px;letter-spacing:.08em}.board-heading h1{font-size:17px;line-height:1.3}
.rule-tag{display:flex;gap:8px;padding:0;font-size:10px}.rule-tag span{margin:0;font-size:10px}
.match-strip{min-height:20px;margin-bottom:5px;font-size:11px}.match-strip strong{font-size:12px}
.board-caption{margin-top:13px}.panel-heading{margin-bottom:4px}
}
@media(min-width:761px) and (max-height:600px){.play-section{width:100%;position:static}}

#color-settings{margin-bottom:12px}#color-note{margin-top:6px}.play-section>.notice{margin:0 0 7px;padding:5px 9px;min-height:28px;font-size:11px;line-height:1.5}@media(min-width:761px){.play-section{width:min(100%,calc(100dvh - 190px))}}

.header{position:sticky;top:0;z-index:20;background:#0b1b21}.header-learn{border:1px solid #638078;border-radius:6px;background:#183a39;color:#f3e2ca;padding:7px 12px;font-size:12px;white-space:nowrap}.header-learn:hover{background:#28514b}@media(min-width:761px){.play-section{top:58px}}@media(max-width:760px){.header-tools{gap:9px}.header-learn{padding:7px 9px}}

.match-strip #notice{flex:1;margin:0;padding:0 8px;border:0;background:none;min-height:0;font-size:10px;line-height:1.5}.match-strip{flex-wrap:wrap}.match-strip #board-move{margin-left:auto}#help-dialog{padding:20px;max-width:580px;max-height:90dvh;overflow:auto;margin:auto}#help-dialog .learn-body{padding:8px 0 0}#help-dialog #learn-progress{font-size:11px;color:var(--muted)}.status-block:has(#status-description[hidden]){padding-bottom:8px}@media(max-width:760px){.match-strip #notice{font-size:10px;min-width:140px}}

.header-learn{height:34px;padding:0 13px;border:1px solid #3b505b;border-radius:17px;background:#11232c;color:#ebdbca;font-weight:400;transition:background .15s,border-color .15s}.header-learn:hover{background:#30434c}.header-tools{gap:10px}@media(max-width:760px){.header-learn{height:42px;border-radius:21px}.header-tools{gap:9px}}

#help-dialog .help-topic{border-top:1px solid var(--line);margin:0;padding:0}#help-dialog .help-topic>summary{min-height:48px;padding:12px 0;font-size:13px;color:#e3eceb}#help-dialog .help-topic p{margin:0 0 13px;font-size:12px;line-height:1.85}#help-dialog .help-topic:first-of-type{margin-top:18px}#help-dialog .finish-guide{margin:18px 0 0;padding:14px;background:#10272e;border:1px solid #3c5962}#help-dialog .help-section-title{font-size:11px;font-weight:500;color:#9fb8bf;margin:0 0 9px}#help-dialog .finish-guide>strong{font-size:13px}#help-dialog .finish-guide p{margin:8px 0 0}#help-dialog .end-steps{margin-bottom:0}

.board-lines{inset:var(--grid-inset,6.5%);width:var(--grid-span,87%);height:var(--grid-span,87%)}.coordinates.horizontal{left:var(--grid-inset,6.5%);right:var(--grid-inset,6.5%)}.coordinates.vertical{top:var(--grid-inset,6.5%);bottom:var(--grid-inset,6.5%)}.board[aria-rowcount="19"] .horizontal{bottom:0;height:12px;font-size:9px}.board[aria-rowcount="19"] .vertical{left:0;width:15px;font-size:9px}@media(max-width:760px){.board[aria-rowcount="19"] .coordinates{font-size:8px}.board[aria-rowcount="19"] .vertical{width:10px}.board[aria-rowcount="19"] .horizontal{height:10px}}

/* Size the two columns together so the board has no unused column gutter. */
@media(min-width:761px){
  .app-shell{--board-limit:calc(100dvh - 156px);--panel-width:clamp(330px,24vw,390px);--layout-gap:clamp(20px,2vw,28px);width:100%;max-width:calc(var(--board-limit) + var(--panel-width) + var(--layout-gap) + 48px);padding-inline:24px}
  main{grid-template-columns:minmax(0,1fr) var(--panel-width);gap:var(--layout-gap);padding-top:10px;padding-bottom:24px;align-items:start}
  .play-section{width:100%;margin:0;top:58px}
  .board-heading h1{font-size:19px}.board-heading{margin-bottom:6px}
  .match-strip{min-height:24px;margin-bottom:6px;gap:8px}.match-strip #notice{font-size:11px;padding-inline:4px}.match-strip #board-move{font-size:11px}
  .board-caption{margin-top:12px;font-size:11px}
  .header{width:100%}.game-panel{padding-top:0}
  .status-block h2{font-size:22px}.status-block{padding-top:0}
  .game-panel>.board-bottom{font-size:11px;padding-bottom:12px;gap:5px 12px}
  .player{min-height:80px;padding:11px 10px;gap:8px}.player-stone{width:30px;height:30px}.player strong{font-size:12px}.player>div>span{font-size:11px}.turn-tag{font-size:11px;margin-left:38px}
  .match-stats>div>span{font-size:12px}.match-stats strong{font-size:22px}
  .actions button,.utility-actions button{min-height:46px;font-size:14px}
  .mode-switch button{min-height:40px;font-size:14px;padding:9px 5px}
  .setting-heading{font-size:14px}.setting-heading>span:last-child{font-size:12px}.setting-heading strong{font-size:12px}
  .size-switch button{min-height:38px;font-size:13px}.level-grid button{min-height:36px;font-size:14px}
  .level-description{font-size:12px;line-height:1.65}.komi-row{font-size:13px}.komi-row select{font-size:13px}.komi-row>span{font-size:11px}
}
@media(min-width:761px) and (max-width:1000px){
  .app-shell{--panel-width:290px;--layout-gap:20px;padding-inline:18px;max-width:calc(var(--board-limit) + 346px)}
  .game-panel>.board-bottom>span:last-child{display:none}.player{padding:10px 8px;gap:7px}.player strong{font-size:11px}.turn-tag{margin-left:37px}.actions button,.utility-actions button{font-size:13px}.setting-heading{font-size:13px}
}
@media(min-width:761px) and (max-height:740px){
  .game-panel .settings{padding-top:12px;margin-top:3px;margin-bottom:0}.match-stats{margin:10px 3px}.player{min-height:72px;padding-block:8px}.actions button,.utility-actions button{min-height:42px;padding-block:8px}.mode-switch button{min-height:36px}.size-switch button{min-height:34px}.level-grid button{min-height:33px}.status-block h2{font-size:20px}
}
@media(min-width:761px) and (max-height:600px){.app-shell{max-width:1180px}.play-section{position:static}}

@media(min-width:761px){
  .player{display:grid;grid-template-columns:30px minmax(0,1fr);column-gap:8px;row-gap:4px;align-items:center;align-content:center}.player>div{min-width:0}.player strong{white-space:nowrap;letter-spacing:-.035em}.turn-tag{grid-column:2;width:auto;margin:0}
}
@media(min-width:761px) and (max-height:800px){
  .status-block h2{font-size:20px;margin:2px 0}.status-block:has(#status-description[hidden]){padding-bottom:6px}.game-panel>.board-bottom{font-size:10px;padding-bottom:8px}
  .player{min-height:68px;padding:8px}.player strong{font-size:11px}.player>div>span,.turn-tag{font-size:10px}
  .match-stats{margin:10px 3px}.match-stats strong{font-size:20px}.match-stats>div>span{font-size:11px}
  .actions button,.utility-actions button{min-height:42px;padding:8px;font-size:13px}.text-button{padding-block:7px}
  .game-panel .settings{padding-top:11px;margin-top:3px;margin-bottom:0}.mode-switch{margin-bottom:10px}.mode-switch button{min-height:34px;padding:7px 5px;font-size:13px}.size-switch button{min-height:32px;font-size:12px}.setting-heading{font-size:13px;margin-bottom:6px}.setting-heading>span:last-child{font-size:11px}.level-grid button{min-height:32px;font-size:13px}.level-description{font-size:11px;line-height:1.6;margin-top:6px}.ai-settings{margin-bottom:10px}#color-settings{margin-bottom:10px}.komi-row{margin-top:8px}
}

.match-hero{position:relative;aspect-ratio:2.3;margin:0 0 12px;overflow:hidden;border:1px solid #3b505b;border-radius:8px;background:#10242b}.match-hero img{display:block;width:100%;height:auto}.match-hero figcaption{position:absolute;bottom:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:7px 10px;background:linear-gradient(transparent,#09171cee);font-size:12px}.match-hero figcaption span{border:1px solid #d3a477;border-radius:5px;padding:3px 8px;color:#ffd1a6}.game-panel>.settings:not(.board-settings){border:0;padding:0;margin:0 0 10px}.game-panel>.players{display:none}.game-panel>.board-settings{margin-top:10px}.game-panel .match-stats{margin-top:0}@media(min-width:761px){.game-panel{max-height:calc(100dvh - 72px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#40535e transparent;padding-right:5px}}

.board-select-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:8px;font-size:12px;color:#cbd5db}.board-select-row select{width:100%;min-width:0;height:34px;padding:4px 6px;color:#e9d8c8;border:1px solid #40535e;background:#162832;border-radius:5px;font:inherit}.board-select-note{margin:8px 0 0;font-size:10px;color:var(--muted)}@media(max-width:370px){.board-select-row{gap:6px;font-size:11px}}

.board-select-row label{font-size:13px}.board-select-note{font-size:12px;line-height:1.65}#resign{display:flex;align-items:center;justify-content:center;min-height:44px;margin:10px auto;padding:10px 18px;font-size:13px;line-height:1.5;color:#bac8cf}@media(min-width:761px){.board-select-row label{font-size:14px}}@media(min-width:761px) and (max-width:1000px){.board-select-row label{font-size:13px}}@media(min-width:761px) and (max-height:800px){.board-select-row label{font-size:13px}.board-select-note{font-size:11px;line-height:1.6}}

.match-progress{display:block;margin:4px 0 10px!important}.match-progress>div{display:flex;align-items:center;justify-content:space-between}.live-summary{border-top:1px solid var(--line);padding-top:8px;margin-bottom:12px}.live-summary-row{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:8px;align-items:center;padding:5px 0;font-size:12px}.live-summary-row>:not(:first-child){text-align:right}.live-summary-labels{font-size:11px;color:var(--muted)}.live-summary-row strong{font-weight:500}.live-summary-row small{font-size:10px;color:var(--muted)}.live-summary p{margin:6px 0 0;font-size:10px;line-height:1.6;color:var(--muted)}.pass-status{padding:10px 12px;margin:0 0 9px;border:1px solid #8f7556;border-radius:6px;background:#342d23;color:#ffdbaf;font-size:12px;line-height:1.65}.match-hero figcaption{justify-content:flex-start}

.game-panel>*{flex-shrink:0}