:root{color-scheme:light dark;--bg: #ffffff;--surface: #f6f6f6;--fg: #101010;--muted: #383838;--line: #c8c8c8;--line-strong: #686868;--cell-hover: #d4d4d4;--cell-peer: #eeeeee;--cell-match: #cfcfcf;--app-bg: color-mix(in srgb, var(--surface) 92%, var(--line));--panel-bg: var(--bg);--gap: 1rem;--board-size: min(78vmin, 680px);--cell-size: calc((var(--board-size) - 8px) / 9);--control-row-size: calc(var(--cell-size) * 1.08);--control-gap: .4rem}@media(prefers-color-scheme:dark){:root{--bg: #141414;--surface: #1e1e1e;--fg: #f0f0f0;--muted: #b0b0b0;--line: #2e2e2e;--line-strong: #4a4a4a;--cell-hover: #303030;--cell-peer: #1a1a1a;--cell-match: #2a2a2a;--app-bg: color-mix(in srgb, var(--bg) 92%, #000000);--panel-bg: var(--surface)}}*{box-sizing:border-box}:where(html,body,#root){margin:0;min-height:100%}#root{container-type:inline-size;container-name:app;display:grid;height:100dvh}body{font-family:IBM Plex Mono,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;background:var(--app-bg);color:var(--fg)}:where(button,input,select,textarea){font:inherit;border-radius:0}.app-shell{display:grid;grid-template-columns:var(--board-size) max-content;grid-template-areas:"board controls"}.mobile-topbar{display:none}.board-panel{grid-area:board;width:var(--board-size);aspect-ratio:1;display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr);border:4px solid var(--line-strong);background:var(--surface)}.cell{position:relative;width:100%;height:100%;padding:0;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;place-items:center;background:var(--surface);box-shadow:inset 0 0 8px color-mix(in srgb,var(--line) 28%,transparent);&:hover{background:var(--cell-hover)}&.border-right{border-right:4px solid var(--line-strong)}&.border-bottom{border-bottom:4px solid var(--line-strong)}&.given .cell-value{color:var(--fg);font-weight:700}&.editable .cell-value{color:var(--muted)}&.peer-highlight{background:var(--cell-peer)}&.same-value-highlight{background:var(--cell-match)}&.selected{background:var(--cell-hover)}}.cell-error-dot{position:absolute;top:.32rem;right:.32rem;width:.42rem;height:.42rem;border-radius:999px;background:#ff3b30;box-shadow:0 0 6px color-mix(in srgb,#ff3b30 70%,transparent);pointer-events:none}.cell-value{font-size:clamp(1.4rem,2.4vw,2.2rem);line-height:1}.notes-grid{width:100%;height:100%;padding:2px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);.note{display:grid;place-items:center;font-size:clamp(.45rem,.7vw,.75rem)}}.control-panel{grid-area:controls;display:grid;grid-template-rows:auto 1fr;gap:1rem;padding:.75rem;border-block-start:1px solid var(--line);background:var(--panel-bg)}.control-meta,.control-actions{display:grid}.control-meta{gap:.25rem}.control-actions{gap:.5rem;align-content:end}.control-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--control-gap)}.mode-switch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--line);.mode{border:0;padding:.5rem .7rem;background:var(--surface);color:var(--muted);font:inherit;font-size:.86rem;font-weight:600;text-transform:none;border-radius:0;cursor:pointer;+.mode{border-left:1px solid var(--line)}&:hover{background:color-mix(in srgb,var(--surface) 86%,var(--fg))}&[data-selected=true],&[aria-pressed=true],&.active{background:var(--fg);color:var(--bg)}}}.secondary-action{margin:0;border:1px solid var(--line);min-width:var(--control-row-size);padding:0;display:grid;place-items:center;background:var(--surface);color:var(--fg);font:inherit;font-size:.8rem;font-weight:700;border-radius:0;cursor:pointer;&:hover{background:color-mix(in srgb,var(--surface) 86%,var(--fg))}}.digit-pad{display:grid;grid-template-columns:repeat(5,var(--cell-size));gap:var(--control-gap);justify-content:end}.digit-button{width:var(--cell-size);min-height:var(--cell-size);margin:0;border:1px solid var(--line);padding:0;background:var(--surface);color:var(--fg);font:inherit;font-size:clamp(1.1rem,calc(var(--cell-size) * .36),1.8rem);font-weight:700;line-height:1;cursor:pointer;&:hover{background:color-mix(in srgb,var(--surface) 86%,var(--fg))}&[data-selected=true]{background:var(--fg);color:var(--bg)}}.control-info{margin:0;text-transform:uppercase;&[data-kind=time]{font-size:.78rem;font-weight:500}&[data-kind=game]{color:var(--muted);font-size:.78rem;font-weight:500}}.difficulty-button{padding:0;border:0;background:transparent;text-align:left;cursor:pointer}.completion-overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:1rem;background:color-mix(in srgb,var(--bg) 74%,transparent);backdrop-filter:blur(2px)}.completion-card{width:min(26rem,100%);padding:1.1rem;border:1px solid var(--line-strong);background:var(--panel-bg);display:grid;gap:.5rem}.completion-kicker{margin:0;color:var(--muted);font-size:.78rem;text-transform:uppercase}.completion-title{margin:0;font-size:1.3rem;line-height:1.2;text-transform:uppercase}.completion-stat{margin:0;font-size:.9rem}.completion-continue{margin-top:.5rem;border:1px solid var(--line-strong);min-height:calc(var(--cell-size) * .85);padding:0 .9rem;background:var(--fg);color:var(--bg);font:inherit;font-weight:700;text-transform:uppercase;cursor:pointer;&:hover{background:color-mix(in srgb,var(--fg) 85%,var(--bg))}}@container app (min-width: 1081px){#root{display:grid;place-items:center}.app-shell{--board-size: min(680px, 68cqi);grid-template-columns:auto auto;grid-template-areas:"board controls";align-items:center}.mobile-topbar{display:none}.control-panel{justify-self:start;height:var(--board-size);display:flex;flex-direction:column}.board-panel{justify-self:end}.control-meta{margin-top:auto;display:flex;justify-content:space-between}.control-actions{align-content:end}}@container app (min-width: 721px) and (max-width: 1080px){.app-shell{grid-template-columns:1fr;grid-template-areas:"board" "topbar" "controls";grid-template-rows:1fr auto auto}.mobile-topbar{grid-area:topbar;display:flex;padding:.75rem;align-items:baseline;justify-content:space-between}.control-panel{grid-template-rows:auto;align-self:center}.board-panel{place-self:center}.control-meta{display:none}.control-row{display:flex;justify-content:space-between}.control-actions{display:grid;grid-template-rows:repeat(2,var(--cell-size))}.digit-pad{display:flex;justify-content:stretch}.digit-button{width:100%;min-height:var(--cell-size)}}@container app (max-width: 720px){.app-shell{--gap: .75rem;--board-size: min(440px, 94cqi);grid-template-columns:1fr;grid-template-areas:"topbar" "board" "controls";grid-template-rows:auto 1fr auto}.mobile-topbar{grid-area:topbar;display:flex;align-items:baseline;justify-content:space-between;width:min(100%,var(--board-size))}.control-panel{grid-template-rows:auto;align-self:center}.board-panel{place-self:center}.control-meta{display:none}.control-row{display:flex;justify-content:space-between}.control-actions{align-content:center;padding-block-end:2rem}.digit-pad{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));grid-template-rows:repeat(2,var(--cell-size));gap:var(--control-gap);justify-content:stretch}.digit-button{min-height:var(--cell-size);width:100%}}