:root{color-scheme:dark;--bg:#0c1422;--panel:#121f31;--raised:#19293e;--line:#2a3b51;--text:#edf2f6;--muted:#a5b4c6;--gold:#f5cb65;--mint:#8ce3cf;--red:#f16b6e;--yellow:#f5cb65;--hole:#091320;--board:#264765;--shadow:0 22px 70px #0003;--angle:0deg}
:root[data-theme=light]{color-scheme:light;--bg:#edf1f2;--panel:#ffffff;--raised:#e9eff2;--line:#ccd6dc;--text:#172b3c;--muted:#4a6376;--gold:#8d6100;--mint:#096b5e;--red:#cc3849;--yellow:#e8b427;--hole:#dce5e9;--board:#9ebccc;--shadow:0 20px 60px #233f5012}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,select{font:inherit}button,a,select,input{touch-action:manipulation}button{cursor:pointer;color:var(--text);background:var(--raised);border:1px solid var(--line);border-radius:9px;padding:10px 13px;font-weight:650;transition:background .15s,border-color .15s,transform .15s}button:hover:not(:disabled){border-color:var(--mint);background:var(--panel)}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.38;cursor:default}button:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--mint);outline-offset:3px}a{color:inherit;text-decoration:none}a:hover{color:var(--mint)}[hidden]{display:none!important}.topbar{max-width:1260px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:19px 28px;border-bottom:1px solid var(--line);gap:15px}.lab{font-weight:800;letter-spacing:1.8px;font-size:12px}.lab span{color:var(--mint);padding:0 4px}.topbar nav{display:flex;align-items:center;gap:22px;color:var(--muted);font-size:12px}.small{padding:5px 9px;font-size:12px;background:transparent}main{max-width:1152px;margin:auto;padding:30px 28px 0}.hero{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:16px}.eyebrow{font-size:10px;letter-spacing:2.2px;font-weight:750;color:var(--mint);display:flex;align-items:center;gap:9px}.brand-mark{display:grid;grid-template-columns:repeat(4,5px);gap:3px}.brand-mark i{width:5px;height:5px;background:var(--mint);border-radius:50%}.brand-mark i:last-child{background:var(--yellow)}h1{font-size:54px;line-height:1.12;letter-spacing:-2.5px;margin:8px 0 5px;font-weight:800}h1>span:first-child{color:var(--yellow)}.preview{font-size:10px;letter-spacing:1px;font-weight:650;vertical-align:middle;margin-left:14px;padding:6px 9px;border:1px solid var(--line);border-radius:5px;color:var(--muted)}.hero p{margin:0;color:var(--muted);font-size:15px}.outline{background:transparent;font-size:12px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:24px;align-items:start}.play-panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);min-width:0}.players{display:flex;align-items:center;justify-content:space-between;gap:10px}.player{display:flex;align-items:center;gap:10px;flex:1;border:1px solid transparent;border-radius:12px;padding:10px 12px;background:var(--raised);min-width:0}.player.active.red{border-color:var(--red)}.player.active.yellow{border-color:var(--yellow)}.player strong{display:block;font-size:14px}.player-disc{font-size:24px;line-height:1}.red .player-disc,.red .turn-mark{color:var(--red)}.yellow .player-disc,.yellow .turn-mark{color:var(--yellow)}.turn-mark{margin-left:auto;font-size:9px;opacity:0}.active .turn-mark{opacity:1}.resources{color:var(--muted);font-size:11px;white-space:nowrap}.resources b{color:var(--text);font-weight:600}.versus{font-size:10px;color:var(--muted);letter-spacing:1px}.status-strip{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12px;padding:15px 4px 0;min-height:36px}#status{font-weight:650}#gravity{color:var(--muted);font-size:11px;white-space:nowrap}.arena{position:relative;width:100%;aspect-ratio:1;isolation:isolate;overflow:hidden}.rotor{position:absolute;left:11%;top:11%;width:78%;height:78%;transform:rotate(var(--angle));transition:transform .46s cubic-bezier(.4,0,.2,1)}.board-frame{position:absolute;inset:0;border-radius:14px;background:var(--board);box-shadow:inset 0 1px 0 #ffffff20,0 12px 30px #0003;border:1px solid #ffffff15}.matrix,.pieces{position:absolute;inset:9px}.matrix{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr)}.cell{padding:0;margin:8%;border-radius:50%;border:0;background:var(--hole);box-shadow:inset 0 3px 6px #0004;min-width:0;min-height:0;transition:box-shadow .15s}.cell:hover:not(:disabled){background:var(--hole);box-shadow:inset 0 0 0 2px var(--mint)}.cell:disabled{opacity:1}.cell.winning{box-shadow:0 0 0 3px var(--mint),0 0 15px #8ce3cf55}.pieces{pointer-events:none}.piece{position:absolute;width:12.5%;height:12.5%;transition:left .34s cubic-bezier(.22,.8,.3,1),top .34s cubic-bezier(.22,.8,.3,1)}.disc{position:absolute;inset:8%;border-radius:50%;box-shadow:inset 0 2px 3px #fff5,inset 0 -5px 8px #0002,0 3px 4px #0003;display:flex;align-items:center;justify-content:center}.piece.p1 .disc{background:var(--red)}.piece.p2 .disc{background:var(--yellow)}.disc:after{content:'';width:51%;height:51%;border:2px solid #0002;border-radius:50%}.piece.p2 .disc:after{border-radius:4px;transform:rotate(calc(45deg - var(--angle)));width:40%;height:40%}.piece.ghost .disc{background:transparent;box-shadow:none;border:2px dashed var(--mint);opacity:.8}.piece.ghost .disc:after{display:none}.mag-slot{position:absolute;width:10%;height:7%;padding:0;border:1px solid var(--line);background:var(--raised);border-radius:7px;color:var(--muted);font-size:11px;display:flex;align-items:center;justify-content:center;transition:background .2s,opacity .2s}.mag-slot span{transform:rotate(calc(-1 * var(--angle)))}.mag-slot.empty{opacity:.45}.mag-slot.owned1{background:var(--red);color:#182031;border-color:var(--red);font-weight:900}.mag-slot.owned2{background:var(--yellow);color:#182031;border-color:var(--yellow);font-weight:900}.mag-slot.expiring{box-shadow:0 0 0 2px var(--text)}.mag-slot:disabled{opacity:.8}.mag-slot.empty:disabled{opacity:.2}.magnet-mode .mag-slot.empty{opacity:1;border-color:var(--mint);color:var(--mint)}.board-caption{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;gap:10px;margin:0 4px 13px}.board-caption>span:last-child{white-space:nowrap}.actions{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.actions button{display:flex;align-items:center;justify-content:center;gap:8px;padding:11px 5px;font-size:12px}.action-icon{font-size:23px;line-height:1;color:var(--gold)}.actions button.selected{background:var(--mint);color:var(--bg);border-color:var(--mint)}.actions button.selected .action-icon{color:inherit}.utility{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:9px}.utility button{background:transparent;border-color:transparent;padding:9px 2px;font-size:11px;color:var(--muted)}.feedback{font-size:12px;min-height:18px;color:var(--mint);text-align:center;margin:6px 0 0}.outcome{border:1px solid var(--mint);border-radius:10px;padding:12px 14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}.outcome strong{color:var(--mint);font-size:20px}.outcome span{font-size:12px;color:var(--muted)}.outcome button{margin-left:auto;font-size:12px}.sidebar{display:flex;flex-direction:column;gap:14px}.card{padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:14px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-heading h2{font-size:15px;margin:0}.label{font-size:8px;letter-spacing:1px;padding:3px 6px;background:var(--raised);color:var(--mint);border-radius:4px}label:not(.check){display:flex;flex-direction:column;gap:6px;margin:12px 0;color:var(--muted);font-size:11px}select{width:100%;padding:10px 28px 10px 10px;min-height:42px;background:var(--raised);color:var(--text);border:1px solid var(--line);border-radius:7px;font-size:12px;cursor:pointer}.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}.primary{background:var(--mint);border-color:var(--mint);color:var(--bg);width:100%;margin-top:7px;font-size:13px;padding:12px}.primary:hover:not(:disabled){color:var(--text)}.tiny{font-size:10.5px;line-height:1.7;color:var(--muted);margin:11px 0 0}.card summary{cursor:pointer;list-style-position:inside;font-size:12px;font-weight:650}.detail-content{padding-top:14px}.check{display:flex;align-items:center;gap:9px;font-size:11px;cursor:pointer}.check input{accent-color:var(--mint);width:16px;height:16px}.engine-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:18px}.engine-stats>div{display:flex;flex-direction:column;gap:3px}.engine-stats span{font-size:10px;color:var(--muted)}.engine-stats strong{font:600 17px ui-monospace,SFMono-Regular,Consolas,monospace}.search-track{height:3px;background:var(--raised);border-radius:2px;margin-top:15px;overflow:hidden}.search-track span{display:block;height:100%;width:0;background:var(--mint);transition:width .3s}.candidates{margin-top:8px;font-size:10px;font-family:ui-monospace,monospace}.candidates>div{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:5px 0;gap:5px}.history-nav{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.history-nav button{padding:4px 14px}.move-list{max-height:150px;overflow-y:auto;margin:12px 0;display:flex;gap:5px;flex-wrap:wrap}.move-list button{font-size:10px;padding:5px 7px}.move-list button.current{border-color:var(--mint);color:var(--mint)}.save-actions{display:flex;gap:8px}.save-actions button{flex:1;font-size:11px}.note{display:flex;gap:10px;color:var(--muted);padding:5px 7px;font-size:11px}.note>span{color:var(--gold);font-size:20px}.note p{margin:0;line-height:1.8}footer{display:flex;justify-content:space-between;gap:16px;padding:25px 0;flex-wrap:wrap;color:var(--muted);font-size:10px}dialog{max-width:540px;width:calc(100% - 30px);max-height:88dvh;overflow:auto;background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}dialog::backdrop{background:#040a13c0;backdrop-filter:blur(4px)}.dialog-title{display:flex;align-items:center;justify-content:space-between;gap:10px}.dialog-title h2{margin:6px 0 15px;font-size:25px}.dialog-title button{align-self:flex-start}#helpText h3{font-size:14px;color:var(--mint);margin-bottom:4px}#helpText p{font-size:12px;color:var(--muted);line-height:1.75;margin-top:3px}#helpText details{margin-top:15px;font-size:11px;color:var(--muted)}.hint-flash{outline:2px solid var(--mint);outline-offset:2px}
@media(min-width:1100px){.arena{max-width:630px;margin:auto}.play-panel{padding:21px}}
@media(max-width:850px){main{padding:22px 16px 0}.topbar{padding:14px 18px}.layout{grid-template-columns:minmax(0,1fr) 265px;gap:16px}.card{padding:15px}.play-panel{padding:12px}.player{padding:8px;gap:7px}.player-disc{font-size:18px}.player strong{font-size:12px}.resources{font-size:10px}h1{font-size:45px}.preview{font-size:8px;margin-left:9px}}
@media(max-width:680px){.layout{grid-template-columns:1fr;gap:18px}.hero{margin-bottom:18px;align-items:flex-start}.hero .outline{padding:7px 9px;font-size:10px;margin-top:5px}.hero p{font-size:12px}.eyebrow{font-size:8px}.topbar nav{gap:12px}.topbar{padding:13px 16px}.lab{font-size:10px;letter-spacing:1px}.topbar nav a{font-size:10px}.hero h1{font-size:42px}.play-panel{border-radius:14px;padding:12px}.player{padding:9px 11px}.player strong{font-size:13px}.player-disc{font-size:21px}.resources{font-size:10.5px}.arena{max-width:520px;margin:auto}.actions button{font-size:11px}.utility button{font-size:10px}.sidebar{display:grid;grid-template-columns:1fr;gap:12px}.setup{padding:20px}.setup label{font-size:12px}select{font-size:13px}.tiny{font-size:11px}.status-strip{font-size:11px}footer{line-height:1.7;font-size:10px}dialog{padding:20px}.preview{font-size:8px}.mag-slot{font-size:10px}.matrix,.pieces{inset:7px}}
@media(max-width:360px){main{padding:17px 10px 0}.topbar{padding:12px 10px}.topbar nav{gap:8px}.preview{display:none}.hero .outline{font-size:9px}.players{gap:6px}.player{padding:7px}.versus{font-size:8px}.actions button{font-size:10px;gap:4px}.utility button{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}

/* Lab additions preserve the v2 board and responsive visual system. */
.hero-tools{display:flex;flex-direction:column;gap:8px;align-items:stretch}.sim-button{background:var(--gold);color:var(--bg);border-color:var(--gold);font-weight:800;min-width:112px}.player-clock{font:700 21px ui-monospace,monospace;font-variant-numeric:tabular-nums;letter-spacing:.4px;padding-top:4px}.settings-fold{margin:13px 0;border-top:1px solid var(--line);padding-top:12px}.settings-fold>summary{font-size:11px;font-weight:650;cursor:pointer}.settings-fold .check{margin-top:12px}.two-fields input{width:100%;min-width:0;border:1px solid var(--line);border-radius:7px;background:var(--raised);color:var(--text);padding:10px;font:inherit;font-size:12px}.decision-box{border-left:2px solid var(--mint);padding:7px 10px;margin-bottom:12px;font-size:12px;line-height:1.8}.decision-box small{display:block;color:var(--muted);font-size:10px;overflow-wrap:anywhere}.save-actions+.save-actions{margin-top:8px}.move-list time{display:block;font-size:9px;opacity:.7}.candidates button{font-size:10px;padding:4px 6px;width:100%;display:flex;justify-content:space-between;gap:8px;text-align:left}.candidates .picked{border-color:var(--mint);color:var(--mint)}#batchStats{line-height:1.8;margin:12px 0}#batchStats strong{color:var(--mint)}.timeout-clock{color:var(--red)}#runList{max-height:160px}#simDialog label{font-size:12px}#simDialog .tiny{font-size:11px}#analysisPanel{scroll-margin-top:15px}#batchPanel{scroll-margin-top:15px}
@media(max-width:680px){.hero-tools{gap:6px}.sim-button{min-width:90px;font-size:12px;padding:8px 9px}.player-clock{font-size:18px}.hero .hero-tools .outline{margin:0}.decision-box{font-size:13px}}