:root{--page:#171d20;--surface:#20292c;--ink:#dce4df;--muted:#a3b0aa;--line:#35413f;--primary:#91b6a1;--soft:#2a3833;--board-light:#efe8d8;--board-dark:#414b42;--board-frame:#39493d;--gold:#91b6a1;--cream:#dce4df;color-scheme:dark;font-family:system-ui,-apple-system,'Segoe UI',sans-serif}
body{background:var(--page);color:var(--ink);font-family:inherit}#app{background:var(--page);box-shadow:none;max-width:540px;min-height:100dvh}.wood{background:var(--surface);box-shadow:none;color:var(--ink)}header.wood{height:86px;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:18px 20px;gap:13px;box-shadow:none}.profile{width:50px;height:50px;border:0;background:var(--soft);color:var(--primary);border-radius:16px;font-size:38px;box-shadow:none;text-shadow:none}#heading{text-align:left;padding:0 42px 0 0}#heading b{font-size:19px;letter-spacing:-.5px;text-shadow:none;color:var(--ink)}#heading small{color:var(--muted);font-size:10px;letter-spacing:0;margin-top:5px}.ribbon{clip-path:none;right:19px;top:22px;width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:13px;background:var(--surface);font-size:23px;color:var(--primary);text-shadow:none;display:grid;place-items:center}
main{padding:18px}#home{padding:5px 0 25px}.eyebrow{font-size:10px;letter-spacing:1.9px;color:var(--primary);font-weight:650;margin:10px 0 13px}#home h1{font-size:33px;line-height:1.16;letter-spacing:-1.1px;margin:0 0 10px;color:var(--ink);text-shadow:none;text-align:left}.subtitle{font-size:14px;line-height:1.6;color:var(--muted);margin:0 0 22px;text-align:left}.homeSpotlight{background:var(--soft);border-radius:24px;overflow:hidden;padding:15px 18px 20px;margin:24px 0 19px}.hero{height:165px;padding:0;gap:4px}.hero .pieceSprite{width:145px;height:145px;filter:none}.hero .pieceSprite+.pieceSprite{margin-left:-16px;transform:translateY(-4px)}.spotlightText{text-align:center;line-height:1.5}.spotlightText b{font-size:14px;font-weight:650;display:block}.spotlightText span{font-size:11px;color:#a3b0aa;display:block;margin-top:4px}
.big,.green{background:var(--primary);border:1px solid var(--primary);color:#fff;text-shadow:none;box-shadow:none;border-radius:14px;min-height:53px;font-size:15px;font-weight:650;padding:14px 12px;margin:8px 0;letter-spacing:0}.blue{background:var(--soft);border-color:var(--line);color:var(--ink);text-shadow:none;box-shadow:none}.big:active,.small:active{transform:translateY(1px)}.autosave{color:var(--muted);font-size:11px;line-height:1.7;margin:18px 0;text-align:center}.screen{padding-bottom:20px}.titlebar{height:auto;min-height:63px;padding:7px 43px 15px;justify-content:center}.titlebar h1{font-size:18px;color:var(--ink);line-height:1.35}.titlebar p{color:var(--primary);font-size:12px;margin-top:5px}.back{top:4px;left:0;width:38px;height:38px;font-size:27px;color:var(--primary);background:var(--surface);border:1px solid var(--line);border-radius:12px;text-shadow:none;line-height:1}.setupspace{height:0}.panel{outline:0;border:1px solid var(--line);border-radius:19px;padding:18px;margin:14px 0;box-shadow:none;background:var(--surface)}h2{font-size:16px;color:var(--ink);text-shadow:none;text-align:left;margin:0 0 16px;font-weight:650;letter-spacing:-.2px}.colors{padding:9px 0 0;gap:10px}.colors button{border:1px solid var(--line);background:var(--page);color:var(--muted);box-shadow:none;border-radius:14px;padding:8px 4px 12px;font-size:12px;font-weight:600}.colors button.chosen{border:2px solid #6b8c6e;background:var(--soft);box-shadow:none;color:var(--primary)}.colors button>.pieceSprite{width:100%;height:auto;aspect-ratio:1;max-width:88px;margin:0 auto}.splitpiece{height:88px;width:88px;max-width:100%;margin:0 auto}.splitpiece .pieceSprite{position:absolute;inset:0;width:100%;height:100%;margin:0}#levelLabel{font-size:21px;color:var(--primary);text-shadow:none;margin:22px 0 18px;text-align:center}input[type=range]{background:#3a4943;box-shadow:none;height:6px;margin:14px 0}input[type=range]::-webkit-slider-thumb{width:24px;height:24px;border-radius:50%;transform:none;border:3px solid #26352e;background:var(--primary);box-shadow:0 1px 5px #24352e30}.ticks{font-size:10px;color:var(--muted)}.goldtext{color:var(--muted);font-size:11px}.record{border-color:var(--line);color:var(--muted);font-size:10px;padding-top:14px}.record b{color:var(--ink)}.selectLabel{display:block;color:var(--muted);font-size:12px;font-weight:500;margin:16px 0 8px}select{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px;background:var(--page);color:var(--ink);font:500 14px system-ui}.appearancePreview{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:18px 0 0}.appearancePreview>span{display:block;aspect-ratio:1;background:var(--board-light)}.appearancePreview>span:nth-child(even){background:var(--board-dark)}.appearancePreview .pieceSprite{width:100%;height:100%}
.settingrow{min-height:67px;padding:13px 0;gap:14px;font-size:13px;font-weight:500;border-bottom:1px solid var(--line)}.settingrow label{max-width:72%;font-size:13px;line-height:1.5;font-weight:500}.settingrow input{width:52px;height:30px;background:#46524d;border:0;border-radius:20px;box-shadow:none}.settingrow input:checked{background:var(--primary)}.settingrow input:after{width:24px;height:24px;left:3px;top:3px;border:0;border-radius:50%;background:#d2dfd6;box-shadow:0 1px 3px #25362e24;transition:left .12s}.settingrow input:checked:after{left:25px}.small{font-size:13px;padding:9px 16px;border-radius:10px}.updatesPanel{margin-top:16px}.versionline{font-size:13px}.versionline b{color:var(--primary)}#updateStatus{color:var(--primary);font-size:13px;line-height:1.7}#updateNotes{color:var(--muted);font-size:12px;line-height:1.7}.updateHelp{color:var(--muted);font-size:11px;line-height:1.7}.updatesPanel .big{font-size:13px}.updateNotice{background:var(--soft);border-color:var(--line);color:var(--primary);font-size:12px}.credits{font-size:11px;color:var(--muted);line-height:1.8;padding:10px 3px}.credits a{color:var(--primary)}footer{background:transparent;border-top:1px solid var(--line);padding:15px 18px calc(15px + env(safe-area-inset-bottom));font-size:9px;color:var(--muted);letter-spacing:1px}footer span{color:var(--muted);letter-spacing:0}
.opponentLine,.underboard{font-size:11px;color:var(--muted);padding:7px 2px 10px;margin:0;gap:10px}#engineState{color:var(--primary)}#saved{color:var(--primary);font-size:10px}.boardFrame.wood{padding:4px;background:var(--board-frame);border:0;border-radius:10px;box-shadow:0 5px 20px #25362e13}#board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr));width:100%;aspect-ratio:1;position:relative;isolation:isolate;contain:layout paint;overflow:hidden;border-radius:5px;touch-action:none;user-select:none;-webkit-user-select:none}.sq{height:100%;width:100%;min-height:0;min-width:0;aspect-ratio:auto;padding:0;border:0;overflow:visible;background:var(--board-light);touch-action:none;user-select:none;-webkit-user-select:none}.sq.dark{background:var(--board-dark)}.sq.last{background:var(--board-light);box-shadow:inset 0 0 0 2px #beac68}.sq.dark.last{background:var(--board-dark)}.sq.selected{background:var(--board-light);box-shadow:inset 0 0 0 3px #5b8f64}.sq.dark.selected{background:var(--board-dark)}.sq.check{background:#cf9b8e;box-shadow:inset 0 0 0 2px #a24e42}.sq .pieceSprite{position:absolute;inset:0;z-index:1;filter:none}.sq[data-own=true]{cursor:grab}.coord{font-size:8px;color:#52604b}.dark .coord{color:#e7e6d8}.sq.legal:after{background:#43784b65}.sq.capture:after{border-color:#668e56;background:transparent}.sq.dropReady{box-shadow:inset 0 0 0 3px #3a8b58!important}.sq.dropBlocked{box-shadow:inset 0 0 0 3px #b57261!important}.dragOrigin>.pieceSprite{opacity:.16}.dragPiece{position:fixed;pointer-events:none;z-index:9999;filter:none;will-change:transform}.captureGhost{position:absolute;pointer-events:none;z-index:7}.landingPulse{position:absolute;inset:4%;border:2px solid #6a9763;border-radius:12%;pointer-events:none;z-index:9}.capturedPulse{border-color:#b77956}.gameActions{gap:5px;margin:20px 0 8px;justify-content:space-evenly}.gameActions>button{font-size:10px;color:var(--muted);text-shadow:none;gap:8px;min-height:73px}.round{width:47px;height:47px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--primary);box-shadow:none;text-shadow:none;font-size:27px}.message{font-size:11px;line-height:1.7;color:var(--muted);min-height:27px}#captured{color:var(--muted);font-size:10px;min-height:20px}.historybox{background:var(--surface);border:1px solid var(--line);border-radius:13px;padding:14px;margin:16px 0;font-size:11px}.historybox summary{color:var(--ink);font-size:10px;letter-spacing:1px}.move{border-color:var(--line);font-size:12px}.gameResult{background:var(--soft);border-color:#b4c6ae;padding:18px}.gameResult h2{text-align:center;font-size:18px;color:var(--primary)}.gameResult p{font-size:12px;color:var(--muted)}.resultActions .big{font-size:12px;min-height:49px}
dialog{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:22px;box-shadow:0 16px 60px #20332633;padding:24px}dialog::backdrop{background:#1d302b66}dialog p{color:var(--muted);font-size:13px;line-height:1.7}dialog h2{font-size:18px}.dialogActions button{background:var(--page);border:1px solid var(--line);border-radius:12px;padding:13px;color:var(--ink)}.dialogActions .green{background:var(--primary);color:#fff;border-color:var(--primary)}#promotionChoices button{border:1px solid var(--line);border-radius:12px;background:var(--soft);padding:5px}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #8fb398;outline-offset:3px}
:root[data-board-theme=classic]{--board-light:#efe8d8;--board-dark:#414b42;--board-frame:#39493d}:root[data-board-theme=walnut]{--board-light:#eedcc1;--board-dark:#856044;--board-frame:#674b37}:root[data-board-theme=green]{--board-light:#e8eddb;--board-dark:#789875;--board-frame:#537150}:root[data-board-theme=blue]{--board-light:#e4edf1;--board-dark:#708ca6;--board-frame:#4f657c}:root[data-board-theme=slate]{--board-light:#cbd0d4;--board-dark:#5b6570;--board-frame:#434b55}:root[data-board-theme=rose]{--board-light:#f0e3da;--board-dark:#a47f86;--board-frame:#795e65}
@media(max-width:360px){main{padding:14px}header.wood{padding:16px}#heading b{font-size:18px}#heading small{font-size:9px}#home h1{font-size:29px}.hero .pieceSprite{width:130px;height:130px}.homeSpotlight{padding:12px 12px 18px}.hero{height:145px}.resultActions .big{font-size:11px}}@media(max-height:760px){header.wood{height:78px}.ribbon{top:18px}.homeSpotlight{margin:18px 0 14px}.hero{height:130px}.hero .pieceSprite{width:125px;height:125px}.gameActions{margin-top:14px}.panel{padding:16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.appearancePreview>span{position:relative}.appearancePreview .pieceSprite{position:absolute;inset:0;width:100%;height:100%}
.dragPiece.pieceSprite{position:fixed}.captureGhost.pieceSprite{position:absolute}
#continue:not([hidden])~#setupOpen{background:var(--soft);border-color:var(--line);color:var(--ink)}

/* Quiet night palette: subdued buttons and native dark controls. */
.big,.green,.dialogActions .green{background:#3f6251;border-color:#527963;color:#e7eee9}.blue{background:var(--soft);border-color:var(--line);color:var(--ink)}input[type=range]::-webkit-slider-thumb{background:#a0bea9}.settingrow input:checked{background:#527963}.settingrow input:after{background:#d2dfd6}dialog::backdrop{background:#080d11b8}.gameResult{border-color:#52705d}.homeSpotlight{background:linear-gradient(145deg,#293a33,#222d2c)}