.chess-board{--chess-light:color-mix(in srgb,var(--accent) 8%,var(--surface-raised));--chess-dark:color-mix(in srgb,var(--accent) 48%,var(--surface));--chess-light-ink:var(--chess-light);--chess-dark-ink:color-mix(in srgb,var(--accent) 80%,var(--text));--chess-last:color-mix(in srgb,var(--warning) 42%,transparent);--chess-selected:color-mix(in srgb,var(--accent) 50%,transparent);--chess-check:color-mix(in srgb,var(--danger) 62%,transparent);--chess-target:color-mix(in srgb,var(--text) 30%,transparent);--chess-arrow:var(--success);position:relative;width:100%;aspect-ratio:1;border:1px solid var(--border-strong);border-radius:var(--radius-md);padding:var(--space-1);background:var(--surface);user-select:none;-webkit-user-select:none;touch-action:manipulation}.dark .chess-board{--chess-light:color-mix(in srgb,var(--accent) 30%,var(--text));--chess-dark:color-mix(in srgb,var(--accent) 72%,var(--background));--chess-dark-ink:color-mix(in srgb,var(--accent) 60%,var(--background));--chess-target:color-mix(in srgb,var(--background) 42%,transparent)}.chess-board[data-movable] [data-piece]{cursor:grab}.chess-square{position:relative;width:100%;height:100%}.chess-target{position:absolute;inset:35%;border-radius:50%;background:var(--chess-target);pointer-events:none;z-index:2}.chess-target[data-capture]{inset:5%;background:none;border:.3rem solid var(--chess-target)}.chess-promotion{position:absolute;z-index:30;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--border-strong);border-radius:var(--radius-lg);background:var(--surface-raised);box-shadow:var(--shadow-lg)}.chess-promotion p{margin:0;font-size:var(--font-size-sm);color:var(--text-muted)}.chess-promotion-pieces{display:flex;gap:var(--space-2)}.chess-promotion-pieces .button{width:3.5rem;height:3.5rem;padding:var(--space-1);background:var(--chess-dark)}.chess-promotion-pieces svg{width:100%;height:100%}.chess-steps{display:flex;gap:var(--space-1)}.chess-steps .button{min-width:2.5rem;justify-content:center;font-size:var(--font-size-base);line-height:1.2}.chess-moves{list-style:none;margin:0;padding:0;overflow-y:auto;font-size:var(--font-size-sm)}.chess-moves li{display:grid;grid-template-columns:2.25rem 1fr 1fr;align-items:stretch;gap:var(--space-1);padding:1px 0}.chess-move-number{align-self:center;color:var(--text-faint);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:right;padding-right:var(--space-1)}.chess-move{display:flex;flex-direction:column;align-items:flex-start;gap:0;min-width:0;padding:var(--space-1) var(--space-2);border:1px solid transparent;border-radius:var(--radius-sm);background:none;color:var(--text);font:inherit;text-align:left;cursor:pointer}.chess-move:hover{background:var(--surface)}.chess-move:focus-visible{outline:2px solid var(--accent);outline-offset:0}.chess-move[aria-current=true]{background:var(--accent-subtle);border-color:var(--accent)}.chess-san{font-family:var(--font-mono);font-weight:600}.chess-move time{color:var(--text-faint);font-size:var(--font-size-xs);line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.chess-empty{margin:0;color:var(--text-muted);font-size:var(--font-size-sm)}.chess-header{text-align:center;max-width:44rem;margin-inline:auto}.chess-page{--chess-board-size:min(36rem,max(18rem,calc(100dvh - 21rem)));display:grid;grid-template-columns:minmax(0,1fr) minmax(0,var(--chess-board-size)) minmax(0,1fr);gap:var(--space-6);align-items:start}.chess-main{grid-column:2;grid-row:1;gap:var(--space-3)}.chess-main,.chess-side{min-width:0;display:flex;flex-direction:column}.chess-side{gap:var(--space-4)}.chess-side-moves{grid-column:3;grid-row:1;max-width:22rem}.chess-side-games{grid-column:1;grid-row:1;max-width:22rem;justify-self:end;width:100%}.chess-status{margin:0;text-align:center;font-size:var(--font-size-md);font-weight:600;line-height:var(--line-height-tight)}.chess-substatus{margin:0;text-align:center;color:var(--text-muted);font-size:var(--font-size-sm)}.chess-board-row{position:relative;display:flex;gap:var(--space-2);align-items:stretch}.chess-board-row .chess-board{flex:1 1;min-width:0}.chess-board-space{width:100%;aspect-ratio:1;border:1px dashed var(--border);border-radius:var(--radius-md)}.chess-bar{flex:none;width:.75rem;display:flex;flex-direction:column;justify-content:flex-end;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--text);overflow:hidden}.chess-bar[data-flipped]{justify-content:flex-start}.chess-bar-white{background:var(--surface-raised);transition:height var(--duration-base) var(--ease-standard)}.dark .chess-bar{background:var(--background)}.dark .chess-bar-white{background:var(--text)}.chess-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--space-2)}.chess-page .button:disabled{opacity:.5;cursor:default}.chess-page .button:disabled:hover{border-color:var(--border-strong)}.chess-page .button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-subtle)}.chess-draft{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--space-2) var(--space-3);padding:var(--space-3);border:1px solid var(--accent);border-radius:var(--radius-md);background:var(--accent-subtle)}.chess-draft p{margin:0}.chess-typed{display:flex;justify-content:center;gap:var(--space-2)}.chess-typed input{width:12rem;min-width:0;font:inherit;font-size:var(--font-size-sm);color:var(--text);background:var(--surface-raised);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3)}.chess-typed input:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}.chess-hint,.chess-notice{margin:0;color:var(--text-muted);font-size:var(--font-size-sm)}.chess-main .chess-hint,.chess-notice{text-align:center}.chess-notice{min-height:1.5em;color:var(--text)}.chess-panel{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-raised)}.chess-panel h2{margin:0;font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.chess-panel .chess-moves{max-height:26rem}.chess-result{margin:0;font-weight:600}.chess-copy{align-self:flex-start}.chess-score{margin:0;font-size:var(--font-size-lg);line-height:var(--line-height-tight)}.chess-score small{color:var(--text-faint);font-size:var(--font-size-xs);font-weight:400}.chess-evaluation{display:flex;flex-direction:column;gap:var(--space-2)}.chess-line{margin:0;font-size:var(--font-size-sm);color:var(--text-muted)}.chess-line .chess-san,.chess-tried .chess-san{color:var(--text);font-weight:500}.chess-tried{display:flex;flex-wrap:wrap;gap:var(--space-2);font-size:var(--font-size-sm)}.chess-tried p{margin:0;flex-basis:100%}.chess-games{list-style:none;margin:0;padding:0;gap:var(--space-1);max-height:30rem;overflow-y:auto}.chess-games,.chess-games a{display:flex;flex-direction:column}.chess-games a{padding:var(--space-2) var(--space-3);border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text);font-size:var(--font-size-sm)}.chess-games a:hover{background:var(--surface);text-decoration:none}.chess-games a[aria-current=true]{border-color:var(--accent);background:var(--accent-subtle)}.chess-games small{color:var(--text-faint);font-size:var(--font-size-xs)}@media (max-width:1100px){.chess-page{grid-template-columns:minmax(0,var(--chess-board-size));justify-content:center;gap:var(--space-5)}.chess-main,.chess-side-games,.chess-side-moves{grid-column:1;grid-row:auto;max-width:none;justify-self:stretch}.chess-panel .chess-moves{max-height:16rem}}@media (max-width:700px){.chess-page{--chess-board-size:36rem}.chess-controls>.button,.chess-draft .button,.chess-steps .button,.chess-typed .button{min-height:var(--tap-min)}}.chess-waiting{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);margin:0;padding:var(--space-2) var(--space-4);border:1px solid var(--border);border-radius:999px;background:color-mix(in srgb,var(--surface) 92%,transparent);color:var(--text);font-size:var(--font-size-sm);font-weight:600;white-space:nowrap;box-shadow:var(--shadow-md);pointer-events:none;z-index:2}.chess-dots span{animation:chess-dot 1.4s infinite both}.chess-dots span:nth-child(2){animation-delay:.2s}.chess-dots span:nth-child(3){animation-delay:.4s}@keyframes chess-dot{0%,80%,to{opacity:.2}40%{opacity:1}}@media (prefers-reduced-motion:reduce){.chess-dots span{animation:none}}