:root{
  font-family:Arial,Helvetica,sans-serif;color:#191919;background:#f3f2ef;color-scheme:light;
  --bg:#f3f2ef;--surface:#fff;--card:#f8f9fa;--tile:#fff;--fixed:#eeebe5;
  --ink:#191919;--muted:#666;--line:#deddd9;--button:#e8e8e8;--button-hover:#ddd;
  --primary:#191919;--on-primary:#fff;--error:#b24040;--accent:#99733f;
  --board-line:#eae2d6;--board-marker:#816136;--hint:#fff5dd;--error-bg:#ffebed;--focus:#0a66c2;
  --game-width:560px;--page-gutter:20px;
  --page-left:max(var(--page-gutter),env(safe-area-inset-left,0px));--page-right:max(var(--page-gutter),env(safe-area-inset-right,0px));
}
*{box-sizing:border-box}
/* Suppress native tap flashes while keeping zoom and scrolling. */
html{-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;overscroll-behavior:none}
/* Game and frequent interactions stay instant; manual dialog exceptions are scoped below. */
*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
body{margin:0;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);overscroll-behavior:none}
button,input{font:inherit}button{cursor:pointer;color:inherit;border:0;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
button:disabled{cursor:default;color:var(--muted)}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.skip-link{position:fixed;z-index:10;top:8px;left:8px;transform:translateY(-200%);padding:12px 16px;border-radius:6px;background:var(--surface);color:var(--ink);font-weight:600}
.skip-link:focus{transform:none}
svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.board,.learn-board,.replay-board,.modifier,.learn-marker,.replay-marker{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
a{color:inherit;text-underline-offset:3px;touch-action:manipulation}
header{background:var(--surface);border-bottom:1px solid var(--line);padding:env(safe-area-inset-top,0px) var(--page-right) 0 var(--page-left)}
.header-inner{width:min(100%,var(--game-width));height:60px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
nav{display:flex;flex-shrink:0;align-items:center;gap:4px}
h1{font-size:22px;font-weight:700;letter-spacing:-.7px;line-height:1.1;margin:0}
.icon-button{width:40px;height:40px;display:grid;place-items:center;background:transparent;border-radius:50%;font-size:20px;font-weight:600}
.icon-button svg{width:21px;height:21px}
.discord-link{text-decoration:none}.discord-link svg{fill:currentColor;stroke:none}
#help{position:relative;font-size:16px}#help::before{content:"";position:absolute;width:22px;height:22px;border:1.5px solid currentColor;border-radius:50%;pointer-events:none}
main{flex:1;display:flex;flex-direction:column;align-items:center;padding:16px var(--page-right) 12px var(--page-left)}
.game{width:min(100%,var(--game-width));text-align:center}
.game-info{display:flex;align-items:center;justify-content:center;gap:20px;height:40px;margin:0 0 16px}
#timer{display:flex;align-items:center;justify-content:center;gap:7px;min-width:78px;height:32px;padding:0;background:transparent;font-size:20px;font-weight:600;font-variant-numeric:tabular-nums}
.clock{width:18px;height:18px;flex:none;stroke-width:2}
.timer-hidden #timer-value{visibility:hidden}.timer-hidden .clock{opacity:.55}
.difficulty{display:inline-flex;align-items:center;min-height:40px;padding:0 17px;border-radius:24px;background:var(--surface);font-size:13px;font-weight:400;text-transform:uppercase;color:var(--ink)}
.play-card{position:relative;padding:20px 20px 16px;background:var(--card);border-radius:12px}
/* Hide the puzzle and its hints instantly whenever the solve clock is paused by focus. */
.game-paused .play-card>*{visibility:hidden}
.game-paused .play-card::after{content:"Paused";position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-size:18px;font-weight:600}
.game-paused dialog{visibility:hidden}
.board-shell{position:relative;width:100%;aspect-ratio:1;margin:auto}
.board{--marker-gap:12px;position:relative;width:100%;height:100%;display:grid;grid-template-rows:repeat(6,minmax(0,1fr));border:2px solid var(--board-line);border-radius:6px;background:var(--tile)}
.board-row{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));min-height:0}
.cell{padding:0;position:relative;display:grid;place-items:center;background:var(--tile);border:0;border-radius:0;user-select:none;-webkit-user-select:none;min-width:0;min-height:0}
/* Draw the grid separately so constraint symbols can stay truly transparent. */
.cell::before,.cell::after{content:"";position:absolute;z-index:1;pointer-events:none;background:var(--board-line)}
.cell::before{top:0;bottom:0;right:0;width:2px}.cell::after{left:0;right:0;bottom:0;height:2px}
.cell:last-child::before,.board-row:last-of-type .cell::after{display:none}
.cell.marker-right::before{background:linear-gradient(to bottom,var(--board-line) calc(50% - var(--marker-gap)),transparent calc(50% - var(--marker-gap)) calc(50% + var(--marker-gap)),var(--board-line) calc(50% + var(--marker-gap)))}
.cell.marker-bottom::after{background:linear-gradient(to right,var(--board-line) calc(50% - var(--marker-gap)),transparent calc(50% - var(--marker-gap)) calc(50% + var(--marker-gap)),var(--board-line) calc(50% + var(--marker-gap)))}
.board-row:first-child .cell:first-child{border-top-left-radius:4px}.board-row:first-child .cell:last-child{border-top-right-radius:4px}.board-row:last-of-type .cell:first-child{border-bottom-left-radius:4px}.board-row:last-of-type .cell:last-child{border-bottom-right-radius:4px}
.cell.fixed{background:var(--fixed)}
.cell[aria-disabled=true]{cursor:default}
.cell:focus-visible{outline:3px solid var(--focus);outline-offset:-5px;z-index:3;opacity:1}
.cell svg,.hint-overlay svg{width:56%;height:56%;stroke-width:3.5}
.cell svg.sun{fill:#ffb51c;stroke:#b96721}.cell svg.moon{fill:#4b8ee6;stroke:#2059a8}
.cell.violation{box-shadow:inset 0 0 0 2px var(--error);background:var(--error-bg)}
.board .cell.violation::after{display:block;border:2px dashed var(--error);background:none;inset:2px;width:auto;height:auto}
.cell.hint-cell{box-shadow:inset 0 0 0 2px var(--accent);background:var(--hint)}
.modifier{position:absolute;z-index:2;transform:translate(-50%,-50%);display:grid;place-items:center;width:20px;height:24px;background:none;color:var(--board-marker);font-size:24px;font-weight:700;line-height:1;pointer-events:none}
.controls{display:flex;gap:10px;margin-top:16px}
.control{flex:1;min-width:0;min-height:40px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:24px;background:var(--button);font-size:16px;font-weight:600;padding:8px 16px}
.control svg{width:19px;height:19px}
.control:disabled{background:var(--button);color:var(--muted)}
.secondary-controls{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:4px}
.text-button{display:flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:7px 12px;border-radius:20px;background:transparent;font-size:12px;font-weight:600;white-space:nowrap}
.text-button svg{width:17px;height:17px}
#status{font-size:13px;line-height:1.5;margin:12px auto 0;max-width:410px}
#status:empty{display:none}#status.error{color:var(--error)}#status.success{color:#33734f}
.loading{position:absolute;inset:0;z-index:3;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;background:var(--card);border-radius:6px;color:var(--muted);font-size:13px}
.loading[hidden]{display:none}
.hint-overlay{position:absolute;inset:4px;display:grid;place-items:center;pointer-events:none;border:2px dashed var(--accent);border-radius:4px;background:var(--hint)}
.hint-overlay svg{width:70%;height:70%}
.hint-dimmed{opacity:.25}.cell.hint-dimmed{pointer-events:none}
#hint-panel{position:relative;margin:12px auto 0;padding:14px 48px 14px 14px;border:1px solid var(--accent);border-radius:6px;background:var(--surface);text-align:left;font-size:14px;line-height:1.5}
#hint-panel[hidden]{display:none}
#hint-panel p{margin:0}#hint-panel #hint-text:not([hidden]){margin-top:6px}#hint-target{font-weight:700}
#dismiss-hint{position:absolute;right:4px;top:4px;width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:transparent;color:var(--muted)}
#dismiss-hint svg{width:18px;height:18px}
#learn-why{min-height:44px;margin-top:8px;padding:8px 14px;border:1px solid var(--line);border-radius:22px;background:var(--surface);font-size:13px;font-weight:600}
.learn-meta{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted)}
#learn-progress{white-space:nowrap;font-variant-numeric:tabular-nums}
.learn-board{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:repeat(6,minmax(0,1fr));width:min(100%,280px);aspect-ratio:1;margin:18px auto 0;border:2px solid var(--board-line);border-radius:5px;background:var(--tile)}
.learn-cell{position:relative;display:grid;place-items:center;background:var(--tile);min-width:0;min-height:0}
.learn-cell::before,.learn-cell::after{content:"";position:absolute;background:var(--board-line);pointer-events:none}
.learn-cell::before{top:0;bottom:0;right:0;width:1px}.learn-cell::after{left:0;right:0;bottom:0;height:1px}
.learn-cell:nth-child(6n)::before,.learn-cell:nth-child(n+31)::after{display:none}
.learn-right::before{background:linear-gradient(to bottom,var(--board-line) calc(50% - 9px),transparent calc(50% - 9px) calc(50% + 9px),var(--board-line) calc(50% + 9px))}
.learn-bottom::after{background:linear-gradient(to right,var(--board-line) calc(50% - 9px),transparent calc(50% - 9px) calc(50% + 9px),var(--board-line) calc(50% + 9px))}
.learn-cell svg{width:65%;height:65%;stroke-width:3.5}
.learn-cell svg.sun,.learn-option svg.sun{fill:#ffb51c;stroke:#b96721}.learn-cell svg.moon,.learn-option svg.moon{fill:#4b8ee6;stroke:#2059a8}
.learn-muted svg{opacity:.2}.learn-marker.learn-muted{opacity:.2}
.learn-marker{position:absolute;z-index:2;transform:translate(-50%,-50%);font-size:18px;font-weight:700;line-height:1;color:var(--board-marker);pointer-events:none}
.learn-relevant,.learn-target,.learn-emphasis{background:var(--hint)}.learn-target{outline:2px solid var(--accent);outline-offset:-3px}
.learn-ghost{outline:2px dashed var(--accent);outline-offset:-3px}
.learn-cell.learn-conflict,.learn-option .learn-conflict{background:var(--error-bg);outline:2px dashed var(--error);outline-offset:-3px}
.learn-error{position:absolute;right:3px;top:0;font-size:13px;color:var(--error)}
#learn-counts{margin:10px 0 0;text-align:center;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
#learn-step-text{min-height:68px;margin:16px 0 0;font-size:14px;line-height:1.6}
#learn-pattern-title{font-size:15px;line-height:1.4;margin:16px 0 8px}
#learn-dialog[data-takeaway] #learn-step-text{min-height:0;margin:0}
#learn-pattern-example{margin:10px 0 0;color:var(--muted);font-size:13px;line-height:1.5}
.learn-pattern-source{box-shadow:inset 0 0 0 2px var(--accent)}
.learn-pattern-pair,.learn-pattern-block{position:absolute;z-index:1;border:2px solid var(--accent);border-radius:3px;pointer-events:none}
.learn-pattern-options{display:grid;gap:8px;margin-top:12px}.learn-pattern-options[hidden]{display:none}
.learn-actions{display:flex;gap:10px;margin-top:12px}.learn-actions button{flex:1;min-height:44px;padding:10px 14px;border-radius:24px;font-size:14px;font-weight:600}
.learn-actions button:disabled{border-color:var(--line);background:transparent;color:var(--muted)}
.learn-alternatives{list-style:none;padding:0;margin:0}.learn-alternatives li{padding:10px 0;border-top:1px solid var(--line)}.learn-alternatives p{margin:6px 0 0;font-size:12px}
.learn-option{display:grid;grid-template-columns:repeat(6,1fr);border:1px solid var(--board-line);border-radius:4px;overflow:hidden}
.learn-option>span{height:36px;display:grid;place-items:center;background:var(--tile)}.learn-option svg{height:26px;width:26px;stroke-width:3.5}
#learn-prerequisites li{font-size:12px;color:var(--muted)}
dialog{width:min(440px,calc(100% - 32px));max-height:calc(100dvh - 32px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding:28px;border:0;border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:0 0 0 1px #00000012,0 16px 48px #00000026,0 2px 8px #00000014}
dialog::backdrop{background:#0006}
/* Occasional pointer-opened dialogs only; never animate the game or win dialog. */
dialog{--ease-out:cubic-bezier(0.23,1,0.32,1);--dialog-enter-duration:200ms}
:is(#help-dialog,#share-dialog)[open][data-animate-open]{opacity:1;transform:none;transform-origin:center;transition:opacity var(--dialog-enter-duration) var(--ease-out),transform var(--dialog-enter-duration) var(--ease-out)!important}
:is(#help-dialog,#share-dialog)[open][data-animate-open]::backdrop{opacity:1;transition:opacity var(--dialog-enter-duration) var(--ease-out)!important}
@starting-style{
  :is(#help-dialog,#share-dialog)[open][data-animate-open]{opacity:0;transform:scale(0.97)}
  :is(#help-dialog,#share-dialog)[open][data-animate-open]::backdrop{opacity:0}
}
@media(prefers-reduced-motion:reduce){
  :is(#help-dialog,#share-dialog)[open][data-animate-open]{transition:opacity var(--dialog-enter-duration) var(--ease-out)!important}
  @starting-style{ :is(#help-dialog,#share-dialog)[open][data-animate-open]{transform:none} }
}
.dialog-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.dialog-title h2{font-size:24px;font-weight:600;letter-spacing:-.5px;margin:0}
.dialog-title h2:focus{outline:none}
.close{display:grid;place-items:center;flex:none;width:44px;height:44px;padding:0;border-radius:50%;background:transparent;color:var(--muted);margin:-8px -10px -8px 0}
.close svg{width:18px;height:18px}
dialog button:focus-visible,dialog input:focus-visible,dialog summary:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
dialog p,dialog li{font-size:14px;line-height:1.6}dialog ol{padding-left:22px}dialog li{margin:10px 0}
.dialog-description{margin:-4px 0 20px;color:var(--muted)}
.dialog-section-title{font-size:13px;font-weight:600;margin:20px 0 12px}
.help-rules{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.help-rules li{display:grid;grid-template-columns:28px 1fr;align-items:start;gap:12px;margin:0}
.rule-number{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--card);color:var(--muted);font-size:12px;font-weight:600}
.help-rules strong{display:block;font-size:14px;line-height:1.4;font-weight:600}
.help-rules p{margin:3px 0 0;color:var(--muted);font-size:13px;line-height:1.45}
.help-cycle{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:7px;padding:9px;border-radius:8px;background:var(--card);font-size:12px;margin:0 0 12px}.help-cycle span{color:var(--muted)}
.input-guide{display:grid;gap:8px;margin:0}.input-guide>div{display:grid;grid-template-columns:48px 1fr;gap:10px;align-items:baseline}
.input-guide dt{font-size:12px;font-weight:600}.input-guide dd{margin:0;color:var(--muted);font-size:13px;line-height:1.5}
.shortcut-details{margin-top:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.shortcut-details summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;cursor:pointer;list-style:none;font-size:13px;font-weight:600;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.shortcut-details summary::-webkit-details-marker{display:none}.shortcut-details summary svg{width:16px;height:16px;color:var(--muted)}.shortcut-details[open] summary svg{transform:rotate(180deg)}
.shortcut-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;margin:2px 0 16px}.shortcut-grid>div{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:24px}
.shortcut-grid dt{font-size:12px;color:var(--muted)}.shortcut-grid dd{margin:0}.shortcut-grid kbd{font-size:11px;white-space:nowrap;padding:3px 5px}
.dialog-note{font-size:12px!important;color:var(--muted);line-height:1.5!important;margin:16px 0 0}
.share-label{display:block;font-size:12px;font-weight:600;margin-top:4px}
#share-url{border-color:var(--line);border-radius:6px;background:var(--card);text-overflow:ellipsis}
.copy-feedback{min-height:22px;color:var(--muted);font-size:13px!important;line-height:1.5!important;margin:12px 0 0}
#native-share[hidden]{display:none}
/* The replay owns its board and frame loop; these styles never match live cells. */
#replay-dialog{padding:24px;width:min(680px,calc(100% - 32px))}#replay-dialog .dialog-title{margin-bottom:16px}
.replay-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px}
.replay-player{min-width:0}
.replay-library{min-width:0;max-height:500px;overflow-y:auto;overscroll-behavior:contain;padding:3px;margin:-3px}
#replay-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
#replay-list li{margin:0}
.replay-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px;border:1px solid transparent;border-radius:6px;background:transparent;text-align:left;min-height:80px}
.replay-item[aria-current="true"]{border-color:var(--line);background:var(--card)}
.replay-item-copy{display:grid;gap:5px;min-width:0}
.replay-item-name{font-size:13px;font-weight:600;line-height:1.35;overflow-wrap:anywhere}
.replay-item-meta{color:var(--muted);font-size:12px;line-height:1.4;font-variant-numeric:tabular-nums}
.replay-thumbnail{flex:none!important;width:60px!important;height:60px;margin:0!important;border-width:1px!important;border-radius:2px!important;pointer-events:none}
.replay-thumbnail .replay-marker{font-size:7px}
.replay-thumbnail .replay-right::before{background:linear-gradient(to bottom,var(--board-line) calc(50% - 3px),transparent calc(50% - 3px) calc(50% + 3px),var(--board-line) calc(50% + 3px))}
.replay-thumbnail .replay-bottom::after{background:linear-gradient(to right,var(--board-line) calc(50% - 3px),transparent calc(50% - 3px) calc(50% + 3px),var(--board-line) calc(50% + 3px))}
.replay-heading{display:flex;align-items:center;min-width:0;flex:1;gap:2px}
#replay-name{font-size:14px;font-weight:600;margin:0;overflow-wrap:anywhere;line-height:1.4;min-width:0}
#replay-rename{flex:none;width:44px;height:44px}#replay-rename svg{width:17px;height:17px}
#replay-delete{flex:none;width:44px;height:44px}#replay-delete svg{width:18px;height:18px}
.replay-delete-notice{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;margin-top:12px;font-size:12px;color:var(--muted)}
.replay-delete-notice .text-button{min-height:44px;padding:8px;font-size:12px}
#replay-delete[hidden],#replay-save[hidden],#replay-delete-notice[hidden]{display:none}
.replay-rename-form{display:flex;align-items:center;gap:2px;min-height:44px;margin-bottom:16px}
.replay-rename-form input{min-width:0;width:100%;height:44px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;color:var(--ink);background:var(--surface);font-size:16px}
.replay-rename-form .icon-button{flex:none;width:44px;height:44px}
.replay-rename-form[hidden],#replay-rename[hidden],.replay-toolbar[hidden]{display:none}
@media(hover:hover) and (pointer:fine){.replay-item:hover{background:var(--card)}}
@media(max-width:600px){
  .replay-layout{grid-template-columns:minmax(0,1fr);gap:16px}
  .replay-library{max-height:none;overflow-x:auto;overflow-y:hidden;padding:3px 3px 8px}
  #replay-list{display:flex;gap:6px;width:max-content;min-width:100%}
  #replay-list li{width:180px;flex:none}.replay-item{height:100%}
  .replay-board:not(.replay-thumbnail){width:min(100%,300px,max(160px,calc(100dvh - 470px)))}
}
#replay-dialog select{font:inherit;font-size:16px;min-height:44px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;color:var(--ink);background:var(--surface)}
.replay-toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px}
#replay-save{flex:none;min-width:96px;min-height:44px;margin:0;padding:8px 12px;border-radius:24px;font-size:12px;font-weight:600}
#replay-save:disabled{border-color:var(--line);color:var(--muted);background:transparent}
#replay-dialog select:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
.replay-note{font-size:12px!important;color:var(--muted);margin:0 0 12px;line-height:1.5!important}.replay-note[hidden]{display:none}
.replay-board{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:repeat(6,minmax(0,1fr));width:min(100%,300px,max(180px,calc(100dvh - 360px)));aspect-ratio:1;margin:auto;border:2px solid var(--board-line);border-radius:5px;background:var(--tile)}
:is(.replay-cell,.replay-thumb-cell){position:relative;display:grid;place-items:center;min-width:0;min-height:0;background:var(--tile)}
:is(.replay-cell,.replay-thumb-cell)::before,:is(.replay-cell,.replay-thumb-cell)::after{content:"";position:absolute;pointer-events:none;background:var(--board-line)}
:is(.replay-cell,.replay-thumb-cell)::before{top:0;bottom:0;right:0;width:1px}:is(.replay-cell,.replay-thumb-cell)::after{left:0;right:0;bottom:0;height:1px}
:is(.replay-cell,.replay-thumb-cell):nth-child(6n)::before,:is(.replay-cell,.replay-thumb-cell):nth-child(n+31)::after{display:none}
.replay-right::before{background:linear-gradient(to bottom,var(--board-line) calc(50% - 9px),transparent calc(50% - 9px) calc(50% + 9px),var(--board-line) calc(50% + 9px))}
.replay-bottom::after{background:linear-gradient(to right,var(--board-line) calc(50% - 9px),transparent calc(50% - 9px) calc(50% + 9px),var(--board-line) calc(50% + 9px))}
.replay-fixed{background:var(--fixed)}
:is(.replay-cell,.replay-thumb-cell) svg{width:62%;height:62%;stroke-width:3.5}:is(.replay-cell,.replay-thumb-cell) svg.sun{fill:#ffb51c;stroke:#b96721}:is(.replay-cell,.replay-thumb-cell) svg.moon{fill:#4b8ee6;stroke:#2059a8}
.replay-marker{position:absolute;z-index:2;transform:translate(-50%,-50%);font-size:19px;font-weight:700;color:var(--board-marker);line-height:1;pointer-events:none}
.replay-hover{outline:3px solid var(--focus);outline-offset:-4px;z-index:1}
.replay-cursor{position:absolute;left:0;top:0;z-index:6;width:20px;height:26px;pointer-events:none;will-change:transform;user-select:none;-webkit-user-select:none}
.replay-cursor[hidden]{display:none}.replay-pointer{display:block;width:20px;height:26px;fill:var(--surface);stroke:var(--ink);stroke-width:1.8;transform-origin:2px 2px;filter:drop-shadow(0 1px 1px #0003)}
.replay-click{position:absolute;left:-8px;top:-8px;width:20px;height:20px;border:2px solid var(--focus);border-radius:50%;opacity:0;pointer-events:none}
.replay-hint{position:absolute;inset:3px;display:grid;place-items:center;border:2px dashed var(--accent);background:var(--hint)}
.replay-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;font-size:13px;font-variant-numeric:tabular-nums}
#replay-speed{max-width:80px}
#replay-seek{display:block;appearance:none;-webkit-appearance:none;width:100%;height:44px;margin:0;padding:0;background:transparent;cursor:pointer;touch-action:pan-y}
#replay-seek::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(to right,var(--primary) var(--replay-progress,0%),var(--button) var(--replay-progress,0%))}
#replay-seek::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:14px;height:14px;margin-top:-5px;border:0;border-radius:50%;background:var(--primary)}
#replay-seek::-moz-range-track{height:4px;border-radius:2px;background:var(--button)}#replay-seek::-moz-range-progress{height:4px;border-radius:2px;background:var(--primary)}
#replay-seek::-moz-range-thumb{width:14px;height:14px;border:0;border-radius:50%;background:var(--primary)}#replay-seek:disabled{cursor:default;opacity:.45}
.replay-action{min-height:20px;margin:0;color:var(--muted);font-size:12px!important;line-height:1.5!important;text-align:center}
.replay-actions{display:flex;align-items:center;justify-content:center;gap:4px;margin-top:10px}
.replay-actions .icon-button{flex:none;width:44px;height:44px}
#replay-play{display:flex;align-items:center;justify-content:center;gap:7px;min-width:88px;min-height:44px;padding:8px 12px;border-radius:24px;font-size:14px;font-weight:600}
#replay-play svg{width:18px;height:18px;flex:none}
#replay-play:disabled{background:var(--button);color:var(--muted)}
.replay-status:not(.sr-only){margin:0 0 12px;font-size:12px!important;line-height:1.5!important;color:var(--error)}
body.dark :is(.replay-cell,.replay-thumb-cell) svg.moon{stroke:#85b7ff}
@media(forced-colors:active){:is(.replay-cell,.replay-thumb-cell)::before,:is(.replay-cell,.replay-thumb-cell)::after{forced-color-adjust:none}:is(.replay-cell,.replay-thumb-cell) svg{fill:CanvasText!important;stroke:CanvasText!important}.replay-hover{outline-color:Highlight}.replay-fixed{border:1px dashed CanvasText}.replay-item[aria-current="true"]{outline:2px solid Highlight;outline-offset:-2px}#replay-seek::-webkit-slider-runnable-track{background:CanvasText}#replay-seek::-webkit-slider-thumb{background:Highlight;forced-color-adjust:none}}
/* 16px prevents iOS input-focus zoom without restricting user zoom. */
input[type=text],input:not([type]){width:100%;min-height:44px;padding:11px 12px;border:1px solid #8c8c8c;border-radius:4px;background:var(--surface);color:var(--ink);margin-top:8px;font-size:16px}
.wide{display:block;width:100%;min-height:44px;padding:11px 18px;border-radius:24px;margin-top:18px;font-size:15px;font-weight:600}
.primary{background:var(--primary);color:var(--on-primary)}
.secondary{background:transparent;border:1px solid var(--ink);color:var(--ink)}
.muted{color:var(--muted);font-size:12px!important}
kbd{padding:1px 4px;border:1px solid var(--line);border-radius:3px;background:var(--card);font-size:12px}
#completion-dialog{text-align:center;max-width:380px;padding:32px}
#completion-dialog h2{font-size:28px;font-weight:600;letter-spacing:-.7px;margin:20px 0 6px}
#completion-dialog p{margin:8px 0}.completion-close{position:absolute;right:12px;top:12px;margin:0}
.completion-check{width:56px;height:56px;display:grid;place-items:center;margin:auto;border-radius:50%;background:var(--hint);color:var(--accent);font-size:30px;font-weight:600}
#completion-time{font-size:44px;letter-spacing:-1px;font-weight:600;margin:20px 0 6px;font-variant-numeric:tabular-nums}
#completion-replay[aria-disabled="true"]{color:var(--muted);cursor:default}
#completion-replay[data-saved-feedback] .completion-replay-label{display:inline-block;opacity:1;transform:none;transition:opacity 160ms cubic-bezier(.23,1,.32,1),transform 160ms cubic-bezier(.23,1,.32,1)!important}
@starting-style{#completion-replay[data-saved-feedback] .completion-replay-label{opacity:.5;transform:translateY(2px)}}
@media(prefers-reduced-motion:reduce){#completion-replay[data-saved-feedback] .completion-replay-label{transition:none!important;transform:none}}
#challenge-board{width:min(100%,240px);margin:16px auto 24px}
#challenge-dialog .wide{margin-bottom:0}
#challenge-review{margin:10px auto 0}#challenge-review[hidden]{display:none}
#race-dialog{width:min(680px,calc(100% - 32px));padding:24px}
.race-boards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.race-boards section{min-width:0}.race-boards h3{font-size:14px;margin:0;font-weight:600}
.race-progress-comparison{display:grid;gap:9px;margin:0 0 20px}
.race-progress-row{display:grid;grid-template-columns:76px minmax(0,1fr) 34px;align-items:center;gap:12px}
.race-progress-row label{font-size:12px;line-height:1.4}
.race-progress{display:block;appearance:none;-webkit-appearance:none;width:100%;height:5px;margin:0;border:0;border-radius:3px;overflow:hidden;background:var(--button);color:var(--ink)}
.race-progress::-webkit-progress-bar{background:var(--button);border-radius:3px}.race-progress::-webkit-progress-value{background:var(--ink);border-radius:3px}.race-progress::-moz-progress-bar{background:var(--ink);border-radius:3px}
.race-percent{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums;text-align:right}
@media(forced-colors:active){.race-progress{border:1px solid CanvasText}.race-progress::-webkit-progress-value{background:Highlight}.race-progress::-moz-progress-bar{background:Highlight}}
.race-finish{min-height:20px;margin:6px 0 10px!important;font-size:12px!important;color:var(--muted);font-variant-numeric:tabular-nums}
.race-board{width:100%;max-width:280px;margin:0}
#race-speed{font:inherit;font-size:16px;min-height:44px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;color:var(--ink);background:var(--surface)}
#race-speed:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
#race-play{display:flex;align-items:center;justify-content:center;gap:7px;min-width:88px;min-height:44px;padding:8px 12px;border-radius:24px;font-size:14px;font-weight:600}
#race-play svg{width:18px;height:18px}
.race-outcome{min-height:44px;display:grid;place-items:center}
#race-result{font-size:20px;font-weight:600;line-height:1.5;text-align:center;margin:14px 0 0}
#race-send{margin-bottom:0}
.challenge-error{color:var(--error);font-size:12px!important;line-height:1.5!important;margin:12px 0 0!important}.challenge-error[hidden]{display:none}
#completion-normal-actions[hidden],#race-result[hidden],#race-send[hidden]{display:none}
@media(max-width:440px){#race-dialog{padding:20px}.race-boards{gap:12px}.race-board .replay-marker{font-size:12px}.race-board .replay-right::before{background:linear-gradient(to bottom,var(--board-line) calc(50% - 6px),transparent calc(50% - 6px) calc(50% + 6px),var(--board-line) calc(50% + 6px))}.race-board .replay-bottom::after{background:linear-gradient(to right,var(--board-line) calc(50% - 6px),transparent calc(50% - 6px) calc(50% + 6px),var(--board-line) calc(50% + 6px))}.race-finish{font-size:11px!important}}
body.dark{--bg:#1b1b1a;--surface:#242424;--card:#202122;--tile:#232426;--fixed:#32302c;--ink:#eee;--muted:#b2b0ac;--line:#454440;--button:#363636;--button-hover:#454545;--primary:#eee;--on-primary:#191919;--board-line:#4b463f;--board-marker:#d6b77f;--hint:#403724;--error:#e58383;--error-bg:#512e34;--accent:#d6b77f;background:var(--bg);color:var(--ink);color-scheme:dark}
body.dark{--focus:#8ac5ff}
body.dark .cell svg.moon{stroke:#85b7ff}
body.dark .learn-cell svg.moon,body.dark .learn-option svg.moon{stroke:#85b7ff}
body.dark #status.success{color:#8ac39d}
body.dark dialog{box-shadow:0 0 0 1px #ffffff1a,0 16px 48px #0006,0 2px 8px #0003}
/* Touch taps must not leave a simulated hover behind. */
@media(hover:hover) and (pointer:fine){
  .icon-button:not(:disabled):hover,.text-button:not(:disabled):hover,.close:hover{background:var(--button)}
  .control:not(:disabled):hover{background:var(--button-hover)}
  .primary:hover{opacity:.85}.secondary:hover{background:var(--button)}
  .cell:not([aria-disabled=true]):not(.violation):not(.hint-cell):hover{background:#faf7f1}body.dark .cell:not([aria-disabled=true]):not(.violation):not(.hint-cell):hover{background:#302e29}
}
@media(max-width:520px){
  .header-inner{height:56px}h1{font-size:20px}.icon-button{width:34px;height:36px}nav{gap:2px}
  main{padding-top:14px;padding-bottom:10px}.game-info{gap:18px;margin-bottom:14px}
  .play-card{padding:12px 12px 10px}.board{--marker-gap:10px}.modifier{width:17px;height:20px;font-size:21px}
  .text-button{padding:7px 9px;font-size:12px}.control{font-size:15px}
  dialog{padding:24px}.dialog-title h2{font-size:22px}
}
@media(max-width:350px){:root{--page-gutter:12px}.header-inner{gap:8px}h1{font-size:18px}.text-button{gap:4px;padding:7px}.text-button svg{width:15px;height:15px}}
/* Bigger hit areas without increasing the size of the icons. */
@media(pointer:coarse){.header-inner{gap:6px}nav{gap:0}.icon-button,.close,#dismiss-hint{min-width:44px;min-height:44px}.control,.text-button,#timer{min-height:44px}}
/* Short landscape windows can scroll instead of crushing the board. */
@media(max-height:850px) and (min-width:521px){:root{--game-width:max(320px,calc(100dvh - 310px))}}
@media(prefers-contrast:more){
  :root{--board-line:#84796a}body.dark{--board-line:#a89d8b}
  .cell.fixed{background:repeating-linear-gradient(135deg,transparent 0 5px,var(--line) 5px 6px),var(--fixed)}
}
@media(forced-colors:active){
  :root,body.dark{--board-line:CanvasText;--error:CanvasText;--board-marker:CanvasText;--focus:Highlight}
  .cell::before,.cell::after{forced-color-adjust:none}
  .cell svg.sun,.cell svg.moon{fill:CanvasText;stroke:CanvasText}
  .cell.fixed{border:1px dashed CanvasText}
  .cell:focus-visible{outline-color:Highlight}
  .board .cell.violation::after{border-color:CanvasText;background:none}
  .modifier{color:CanvasText}
  .learn-cell::before,.learn-cell::after{forced-color-adjust:none}
  .learn-cell svg,.learn-option svg{fill:CanvasText!important;stroke:CanvasText!important}
  .learn-target,.learn-ghost{outline-color:Highlight}.learn-cell.learn-conflict,.learn-option .learn-conflict{outline-color:CanvasText}
}