:root{color-scheme:dark;--bg:#17130f;--panel:#211c16;--cream:#f2e5d0;--muted:#bdb09b;--gold:#d4b37b;--line:#d4b37b33;font-family:Arial,Helvetica,sans-serif;color:var(--cream);background:var(--bg)}
*{box-sizing:border-box}body{margin:0}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.4}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible,canvas:focus-visible{outline:2px solid #f3ca7d;outline-offset:4px}button[hidden],[hidden]{display:none!important}
canvas[data-piece-dragging="true"]{cursor:grabbing}
.site-header{max-width:1660px;margin:auto;padding:24px 38px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:15px;font-size:.7rem;letter-spacing:.22em;font-weight:700}.brand-initial{font:italic 2.7rem Georgia,serif;letter-spacing:-.12em;color:var(--gold);padding-right:6px}.brand-sub{display:block;font-size:.625rem;letter-spacing:.18em;color:var(--muted);margin-top:7px}.header-note{font:italic 1rem Georgia,serif;color:var(--muted);margin:0}.portfolio-link{font-size:.8125rem;color:var(--muted);padding:14px 0}.portfolio-link span{margin-left:14px;color:var(--gold)}.portfolio-link:hover{color:var(--cream)}
.app{max-width:1660px;margin:0 auto;padding:30px 38px 20px;display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:30px;align-items:start}.game-area{min-width:0}.board-heading{display:flex;align-items:end;justify-content:space-between;gap:16px;padding:0 0 22px}.eyebrow{font-size:.6875rem;letter-spacing:.2em;font-weight:700;color:var(--gold);margin:0 0 10px}h1,h2,h3,p{overflow-wrap:anywhere}h1{font:400 clamp(2rem,3.2vw,3.25rem)/1.06 Georgia,serif;letter-spacing:-.04em;margin:0}.view-label{font-size:.625rem;letter-spacing:.13em;color:var(--muted);padding-bottom:5px;white-space:nowrap}.stage{position:relative;height:clamp(460px,calc(100svh - 270px),800px);overflow:hidden;border:1px solid var(--line);background:#17120d;border-radius:3px}canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}canvas:active{cursor:grabbing}canvas:focus-visible{outline-offset:-5px}.loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;background:#19140feb;gap:8px}.loading p{color:var(--muted);line-height:1.6;max-width:36ch}.loading-mark{font:4rem Georgia;color:var(--gold)}.scene-caption{position:absolute;bottom:19px;left:22px;right:22px;display:flex;justify-content:space-between;gap:20px;color:#e4d1ae;font-size:.6rem;letter-spacing:.18em;pointer-events:none;text-shadow:0 1px 10px #000}.board-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0}.board-toolbar p{font-size:.6875rem;line-height:1.8;margin:0;color:var(--muted)}.mouse-mark{font-size:1.1rem;color:var(--gold);margin-right:6px}.separator{padding:0 6px;color:var(--gold)}.text-button{border:0;color:var(--cream);background:none;font-size:.75rem;padding:12px 0;line-height:1.4;white-space:nowrap}.text-button:hover{color:var(--gold)}.text-button span{margin-right:6px;font-size:1.1rem}
.panel{padding:25px 23px;border:1px solid var(--line);background:linear-gradient(145deg,#2a241c,#1e1a15);border-radius:3px;box-shadow:0 20px 60px #0002;min-width:0}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.panel-heading h2{font:400 2rem Georgia,serif;margin:0;letter-spacing:-.03em}.piece-emblem{font:2.9rem Georgia;color:var(--gold);opacity:.9}.status{display:flex;align-items:center;gap:10px;padding:15px 14px;color:#ecddc3;background:#a4b88b0f;border:1px solid #a4b88b33;font-size:.8125rem;line-height:1.5;margin-bottom:24px}.status-dot{width:7px;height:7px;background:#b6c59c;flex-shrink:0;border-radius:50%}.status[data-error=true]{border-color:#da98895e;background:#da988911}.status[data-error=true] .status-dot{background:#da9889}.settings{display:grid;gap:9px}.settings label{font-size:.75rem;color:var(--muted)}.settings select{width:100%;min-width:0;margin-bottom:12px;min-height:45px;background:#191611;border:1px solid var(--line);border-radius:2px;padding:10px 32px 10px 13px;color:var(--cream);font-size:.8125rem}.controls{display:grid;grid-template-columns:1fr;gap:10px;margin:6px 0 29px}.button{border:1px solid var(--line);border-radius:2px;min-height:44px;padding:13px 16px;font-size:.8125rem;font-weight:700;line-height:1.5}.button.primary{background:var(--gold);color:#211b13;display:flex;justify-content:space-between;align-items:center}.button.primary:hover{background:#e4c58e}.button.secondary{background:transparent;color:var(--cream)}.button.secondary:not(:disabled):hover{background:#d4b37b12}.history-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.history-heading h3{font-size:.75rem;margin:0;font-weight:400;color:var(--cream)}.history-heading>span{font-size:.625rem;color:var(--muted)}.moves{height:100px;overflow:auto;scrollbar-width:thin;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:12px 0 22px;padding:10px 0;font-size:.8125rem}.empty-history{font:italic .875rem/1.6 Georgia,serif;color:var(--muted);margin:9px 0}.move-row{display:grid;grid-template-columns:32px 1fr 1fr;gap:7px;padding:5px 8px;font-variant-numeric:tabular-nums}.move-row:nth-child(even){background:#d4b37b09}.move-no{color:var(--muted)}.engine-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.8125rem}.engine-heading>span:last-child{font-size:.5625rem;letter-spacing:.08em;color:var(--gold);border:1px solid var(--line);padding:5px}.engine-card p{font-size:.6875rem;line-height:1.5;color:var(--muted);margin:9px 0 0}.engine-card #engineEval{color:#d1c4b0}.about-engine{border-top:1px solid var(--line);margin-top:19px;padding-top:15px;font-size:.625rem;color:var(--muted);line-height:1.65}.about-engine summary{cursor:pointer;padding:5px 0}.about-engine a{text-decoration:underline;text-underline-offset:3px}.site-footer{max-width:1660px;margin:0 auto;padding:9px 38px 25px;display:flex;justify-content:space-between;gap:18px;color:#a29580;font-size:.6rem;letter-spacing:.13em}.site-footer span:last-child{font:italic .8125rem Georgia;letter-spacing:0}
dialog{background:#29221a;border:1px solid #d4b37b66;border-radius:4px;color:var(--cream);max-width:min(480px,calc(100% - 32px));padding:32px}dialog::backdrop{background:#0a0805bb;backdrop-filter:blur(8px)}dialog h2{font:2rem/1.1 Georgia;margin:0 0 16px}dialog p{color:var(--muted);line-height:1.6}dialog .eyebrow{color:var(--gold)}.dialog-close{position:absolute;right:10px;top:8px;background:none;border:0;color:var(--cream);font-size:1.7rem;padding:6px 10px}.promotion-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.promotion-grid button{padding:16px 5px;border:1px solid var(--line);background:#d4b37b10;color:var(--cream);font-size:2.5rem}.promotion-grid button:hover{background:#d4b37b30}.promotion-grid span{display:block;font-size:.625rem;margin-top:8px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1600px){.app{grid-template-columns:minmax(0,1fr) 350px}.panel{padding:30px}.moves{height:140px}}
@media(max-width:1050px){.site-header{padding:20px 24px}.app{padding:24px;gap:22px;grid-template-columns:minmax(0,1fr) 285px}.panel{padding:20px 18px}.board-toolbar{align-items:start;flex-direction:column;gap:0}.stage{height:620px}.view-label{display:none}.site-footer{padding-inline:24px}}
@media(max-width:800px){.header-note{display:none}.app{grid-template-columns:minmax(0,1fr);padding:22px 18px;gap:22px}.board-heading{padding-bottom:18px}.stage{height:clamp(390px,64svh,620px)}.board-toolbar{flex-direction:row;align-items:center;flex-wrap:wrap;gap:0 12px}.panel{padding:24px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:26px}.panel-heading,.status,.engine-card,.about-engine{grid-column:1/-1}.settings{grid-column:1;grid-row:3/5}.controls{grid-column:2;grid-row:3;margin:0 0 18px;align-self:start}.history-heading{grid-column:2;grid-row:4;align-self:end}.moves{grid-column:2;grid-row:5;margin:12px 0 22px}.engine-card{border-top:1px solid var(--line);padding-top:18px}.site-footer{padding-inline:18px}.brand-initial{font-size:2.3rem}.site-header{padding:15px 18px}.status{margin-bottom:22px}}
@media(max-width:500px){.panel{display:block;padding:22px}.controls{margin:6px 0 25px}.engine-card{border-top:0;padding-top:0}.board-toolbar p{font-size:.625rem}.board-toolbar{justify-content:center;text-align:center}.scene-caption{font-size:.5rem;left:14px;right:14px}.view-label{display:none}.stage{height:440px}.portfolio-link{font-size:.75rem}.brand{font-size:.625rem}.site-footer{flex-wrap:wrap}.promotion-grid span{font-size:.55rem}.board-heading h1{font-size:2.4rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}
/* Keep ordinary controls readable at default and enlarged text sizes. */
.site-header{flex-wrap:wrap}.settings label,.settings select,.button{font-size:.875rem}.status{font-size:.9375rem}.moves{font-size:.875rem}.engine-card p,.about-engine{font-size:.75rem}.board-toolbar p{font-size:.75rem}.scene-caption{font-size:.625rem}
.board-toolbar{flex-wrap:wrap}.view-controls{display:flex;align-items:center;justify-content:flex-end;gap:20px;flex-wrap:wrap}.fullscreen-button{display:inline-flex;align-items:center;gap:7px;min-height:44px}.fullscreen-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.fullscreen-button span{font-size:inherit;margin:0}.fullscreen-message{font-size:.8125rem;line-height:1.6;color:var(--gold);margin:0 0 16px}
:root:fullscreen{overflow:hidden;background:var(--bg)}
:root:fullscreen body{height:100dvh;overflow:hidden}
:root:fullscreen .site-header,:root:fullscreen .site-footer,:root:fullscreen .panel,:root:fullscreen .board-heading,:root:fullscreen .resume-game,:root:fullscreen .board-toolbar,:root:fullscreen .fullscreen-message{display:none}
:root:fullscreen .app{display:block;max-width:none;width:100%;height:100dvh;margin:0;padding:0}
:root:fullscreen .game-area{height:100%;min-height:0}
:root:fullscreen .stage{width:100%;height:100dvh;min-height:0;border:0;border-radius:0}
@media(max-width:500px){.view-controls{justify-content:center;gap:18px}}
.play-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px;flex-shrink:0}
.view-modes{display:flex;border:1px solid var(--line);border-radius:3px;padding:3px;gap:3px}
.view-modes button{min-height:42px;padding:9px 16px;border:0;border-radius:2px;background:transparent;color:var(--muted);font-size:.875rem}
.view-modes button[aria-pressed=true]{background:var(--gold);color:#211b13}
.view-modes button:not(:disabled):hover{box-shadow:inset 0 0 0 1px var(--gold)}
.drone-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:10px 16px;background:transparent;color:var(--cream);border:1px solid var(--line);border-radius:3px;font-size:.875rem;line-height:1.4;white-space:nowrap}
.drone-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.drone-button[aria-pressed=true]{color:var(--gold);border-color:var(--gold);background:#d4b37b0c}
.drone-button:not(:disabled):hover{background:#d4b37b18}
:root:fullscreen .play-toolbar{position:fixed;top:22px;right:22px;z-index:2;display:block;margin:0;max-width:calc(100% - 44px)}
:root:fullscreen .play-toolbar .view-modes,:root:fullscreen .play-toolbar .quick-play{display:none}
:root:fullscreen .drone-button{background:#17130fe6;box-shadow:0 3px 18px #0004;white-space:normal;text-align:left}
:root:fullscreen .drone-button:not(:disabled):hover{background:#29221af2}
.quick-play{display:none;align-items:center;justify-content:space-between;gap:12px;font-size:.875rem;line-height:1.5}
.quick-play .text-button{min-height:44px;font-size:.875rem;padding-inline:8px}
.resume-game{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px;border:1px solid var(--line);background:var(--panel);margin-bottom:16px}
.resume-game h2{font:1.5rem Georgia,serif;margin:0 0 6px}.resume-game p{font-size:.875rem;line-height:1.5;margin:0;color:var(--muted)}
.resume-actions,.dialog-actions{display:flex;gap:10px;flex-wrap:wrap}.save-message{font-size:.75rem;line-height:1.6;color:var(--muted);margin:-12px 0 24px}
.claim-draw{width:100%;margin:0 0 20px;grid-column:1/-1}.dialog-actions{margin-top:22px}dialog label{display:block;font-size:.875rem;margin-bottom:8px}dialog select{max-width:100%;width:100%;padding:12px;background:var(--bg);color:var(--cream);border:1px solid var(--line);font-size:.875rem}
.settings-help{font-size:.8125rem;line-height:1.6;color:var(--muted);margin:-4px 0 16px}
.game-backup{grid-column:1/-1;margin:0 0 24px;border-top:1px solid var(--line);padding-top:12px;font-size:.8125rem;line-height:1.6;color:var(--muted)}.game-backup summary{cursor:pointer;padding:6px 0;color:var(--cream)}.game-backup p{margin:10px 0}.backup-actions{display:flex;gap:10px;flex-wrap:wrap}.backup-actions .button{flex:1;white-space:normal}.game-backup #backupMessage{font-size:.75rem;color:var(--gold)}
@media(max-width:800px){.resume-game{flex-direction:column;align-items:stretch}.resume-actions .button{flex:1}.save-message{grid-column:1/-1;margin:0 0 18px}}
@media(max-width:800px){.play-toolbar{gap:8px}.view-modes{width:100%}.view-modes button{flex:1}.quick-play{display:flex;width:100%}.panel .status{display:none}.board-heading h1{font-size:clamp(1.9rem,7vw,2.6rem)}}