:root{--cream: #f4efe6;--cream-deep: #ebe3d4;--frame: #5c3d2e;--ink: #2a2218;--muted: #7a6a58;--light-sq: #f3ecdf;--dark-sq: #cbb79a;--accent: #2d6a4f;--video-width: 320px;--tray-cell: 56px;font-family:Nunito,system-ui,sans-serif;color:var(--ink);background:var(--cream)}*{box-sizing:border-box}html,body{margin:0;height:100%;background:radial-gradient(ellipse at top,color-mix(in srgb,var(--cream) 88%,white) 0%,transparent 55%),linear-gradient(160deg,var(--cream),color-mix(in srgb,var(--cream) 82%,var(--frame)));overflow:hidden;touch-action:manipulation;-webkit-user-select:none;user-select:none}html.theme-midnight,html.theme-midnight body{color:#e8ecf2;--ink: #e8ecf2;--muted: #9aa3b2;--cream-deep: #222833;--accent: #6bbf8a}button,input{font:inherit}#app{height:100%;min-height:100dvh}.home{min-height:100%;display:grid;place-items:center;padding:2rem}.home-card{width:min(420px,100%);background:#fffcf6eb;border:2px solid rgba(92,61,46,.15);border-radius:18px;padding:2rem 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auto}.puzzle-tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:3px solid transparent;margin:0;box-sizing:border-box;width:2.55rem;height:2.55rem;min-width:2.55rem;min-height:2.55rem;padding:0;border-radius:50%;background:#d4d0c8;color:transparent;font-size:0;line-height:0;cursor:pointer;flex-shrink:0;display:grid;place-items:center;overflow:hidden}.puzzle-tab.active{border-color:color-mix(in srgb,var(--frame) 70%,#5a564e);background:#d4d0c8}.puzzle-tab.solved,.puzzle-tab.failed{background:transparent;padding:0}.puzzle-tab.solved.active,.puzzle-tab.failed.active{border-color:color-mix(in srgb,var(--frame) 70%,#5a564e);background:transparent}.puzzle-tab .sticker-mark{width:100%;height:100%;display:block;object-fit:contain}.board-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,var(--board-track, 8fr));grid-template-rows:auto auto;column-gap:var(--rail-gap);row-gap:var(--stack-gap);align-items:stretch;min-width:0;width:100%}.board-wrap.hide-stickers 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.board-frame{grid-column:3}.coord-gutter{display:none;pointer-events:none}.board-wrap.coords-outside .coord-gutter{display:flex}.coord-gutter-ranks{flex-direction:column;justify-content:space-around;align-items:center;padding:10px 0;min-width:0}.coord-gutter-files{justify-content:space-around;align-items:center;padding:0 10px;margin-left:auto;width:calc(100% * var(--board-files) / (var(--board-files) + var(--rail-cols)));box-sizing:border-box}.board-wrap.hide-stickers .coord-gutter-files{width:100%;margin-left:0}.board-wrap.coords-outside .coord-gutter-files{width:calc((100% - var(--coord-gutter, 1.35rem) - .2rem) * var(--board-files) / (var(--board-files) + var(--rail-cols)))}.board-wrap.hide-stickers.coords-outside .coord-gutter-files{width:calc(100% - var(--coord-gutter, 1.35rem) - .2rem)}.coord-gutter .coord{position:static;font-size:var(--coord-size, .78rem);color:var(--muted)}.board-wrap.coords-outside .coord-rank,.board-wrap.coords-outside .coord-file,.board-wrap.coords-hidden .coord{display:none}.board-frame{grid-column:2;grid-row:2;position:relative;width:100%;aspect-ratio:var(--board-files) / var(--board-ranks);padding:10px;background:var(--frame);border-radius:10px;box-shadow:0 12px 28px #2a22182e,inset 0 0 0 2px #ffffff14}.reward-rail{background:transparent;padding:0;box-sizing:border-box;min-width:0;min-height:0;overflow:hidden;align-self:stretch;display:flex;align-items:stretch;justify-content:center}.reward-column,.reward-column.clock-body{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto;align-items:stretch;justify-items:stretch;gap:6px;height:100%;max-height:100%;width:100%;max-width:100%;min-width:0;padding:0}.reward-column.clock-body:not(.is-visible){grid-template-rows:minmax(0,1fr);gap:0}.reward-column.clock-body:not(.is-visible) .reward-slots{grid-row:1}.reward-column.clock-body:not(.is-visible)>.clock-face{display:none!important}.reward-column>.clock-face[data-side=black]{grid-row:1;grid-column:1}.reward-slots{grid-row:2;grid-column:1;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:repeat(8,minmax(0,1fr));gap:0;min-height:0;height:100%;width:100%;max-width:100%;justify-self:stretch;margin:0}.reward-column>.clock-face[data-side=white],.reward-column>.clock-face[data-side=simple]{grid-row:3;grid-column:1}.reward-column.is-chess.orient-black>.clock-face[data-side=black]{grid-row:3}.reward-column.is-chess.orient-black>.clock-face[data-side=white]{grid-row:1}.reward-column>.clock-face{width:100%;box-sizing:border-box;min-height:0;height:auto;padding:.42rem .1rem;border-radius:6px;border-width:1px}.clock-interactive>.clock-face{cursor:pointer}.room.student .clock-interactive>.clock-face{cursor:default}.reward-column>.clock-face .led-digit{width:.82rem;height:1.52rem}.reward-column>.clock-face .led-colon{width:.3rem;height:1.52rem}.reward-slot{position:relative;min-width:0;min-height:0;overflow:hidden;border-radius:3px;background:color-mix(in srgb,white 22%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--ink) 7%,transparent)}.piece.on-rail{position:absolute;top:0;right:0;bottom:0;left:0;left:0!important;top:0!important;width:100%!important;height:100%!important;z-index:2}.board-wrap.placing .reward-slot{cursor:crosshair;background:color-mix(in srgb,white 32%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--ink) 12%,transparent)}.board{display:grid;grid-template-columns:repeat(var(--board-files),1fr);grid-template-rows:repeat(var(--board-ranks),1fr);width:100%;height:100%;border-radius:4px;overflow:hidden;background:var(--light-sq)}.square{position:relative}.square.light{background:var(--light-sq)}.square.dark{background:var(--dark-sq)}html.theme-grid .square.light,html.theme-grid .square.dark{background-color:var(--light-sq);background-image:linear-gradient(to left,var(--grid-line, #8a7d6e) 1px,transparent 1px),linear-gradient(to top,var(--grid-line, #8a7d6e) 1px,transparent 1px);box-shadow:none}html.theme-grey .board-frame{box-shadow:0 12px 28px #00000047,inset 0 0 0 1px #ffffff0a}html.theme-grey .square.light .coord{color:#1616166b}html.theme-grey .square.dark .coord{color:#ffffff9e}html.theme-grey .coord-gutter .coord{color:#161616b3}html.theme-patterned .square.light,html.theme-patterned .square.dark{background-repeat:repeat;background-size:56px 56px}html[data-theme=grass] .square.light{background-color:var(--light-sq);background-image:url(/boards/grass-light.svg?v=1)}html[data-theme=grass] .square.dark{background-color:var(--dark-sq);background-image:url(/boards/grass-dark.svg?v=1)}html[data-theme=lava] .square.light{background-color:var(--light-sq);background-image:url(/boards/lava-light.svg?v=2)}html[data-theme=lava] .square.dark{background-color:var(--dark-sq);background-image:url(/boards/lava-dark.svg?v=1)}html[data-theme=ocean] .square.light{background-color:var(--light-sq);background-image:url(/boards/ocean-light.svg?v=1)}html[data-theme=ocean] .square.dark{background-color:var(--dark-sq);background-image:url(/boards/ocean-dark.svg?v=1)}html[data-theme=moon] .square.light{background-color:var(--light-sq);background-image:url(/boards/moon-light.svg?v=1)}html[data-theme=moon] .square.dark{background-color:var(--dark-sq);background-image:url(/boards/moon-dark.svg?v=1)}html[data-theme=grass] .square.dark .coord,html[data-theme=lava] .square.dark .coord,html[data-theme=ocean] .square.dark .coord,html[data-theme=moon] .square.dark .coord{color:#ffffff9e}html[data-theme=lava] .coord-gutter .coord,html[data-theme=ocean] .coord-gutter .coord{color:#ffecdcc7}html[data-theme=lava] .board-frame{box-shadow:0 12px 28px #500c0059,inset 0 0 0 1px #ff8c282e}.coord{position:absolute;font-size:var(--coord-size, .8rem);font-weight:800;line-height:1;color:#2a221880;pointer-events:none;z-index:1}.coord-rank{top:4px;left:5px}.coord-file{right:5px;bottom:3px}.pieces-layer,.draw-layer{position:absolute;top:10px;right:10px;bottom:10px;left:10px;width:calc(100% - 20px);height:calc(100% - 20px);pointer-events:none}.draw-layer{z-index:1}.pieces-layer{z-index:2;pointer-events:none}.piece{position:absolute;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;padding:0;margin:0;cursor:grab;pointer-events:auto;touch-action:none;z-index:2;will-change:left,top;contain:layout style}.square.hint:before,.square.hint-capture:before{content:"";position:absolute;pointer-events:none;z-index:1}.square.hint:before{width:22%;height:22%;left:39%;top:39%;border-radius:50%;background:#2a221852}.square.hint-capture:before{right:8%;bottom:8%;width:auto;height:auto;left:8%;top:8%;border-radius:50%;background:transparent;border:4px solid rgba(42,34,24,.34)}.promo-pop{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;background:#18141066;z-index:12;border-radius:10px}.promo-pop[hidden]{display:none}.promo-label{margin:0;color:#fff;font-weight:800}.promo-choices{display:flex;gap:.4rem}.promo-piece{width:56px;height:56px;border:none;border-radius:12px;background:#fff;padding:.2rem;cursor:pointer}.promo-piece .piece-svg,.promo-piece .piece-tint{width:100%;height:100%;display:block}.square.chosen:after,.reward-slot.chosen:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#3b9bff;opacity:.52;pointer-events:none}.reward-slot.chosen:after{border-radius:inherit;z-index:1}.piece.selected{z-index:3}.piece.sticker{z-index:6;overflow:visible}.piece.sticker .sticker-mark{width:70%;height:70%;margin:15%;display:block;overflow:visible;object-fit:contain;pointer-events:none;filter:drop-shadow(0 2px 3px rgba(0,0,0,.28))}.piece.sticker.on-piece{pointer-events:none;z-index:7}.piece.sticker.on-piece .sticker-mark{pointer-events:auto;cursor:pointer;position:absolute;width:38%;height:38%;margin:0;right:2%;top:2%}.piece.sticker.on-piece.sticker-front{pointer-events:none;z-index:9}.piece.sticker.on-piece.sticker-front .sticker-mark{pointer-events:auto;cursor:grab;position:absolute;bottom:0;left:0;width:70%;height:70%;margin:15%;right:auto;top:auto}.piece.piece-badge{z-index:8;pointer-events:none}.piece.piece-badge .piece-svg,.piece.piece-badge .piece-tint{pointer-events:auto;cursor:pointer;position:absolute;width:38%;height:38%;margin:0;right:2%;top:2%;z-index:10;filter:drop-shadow(0 1px 2px rgba(0,0,0,.35))}.piece.sticker.selected{z-index:8}.piece.dragging{opacity:0;pointer-events:none}.piece.locked{pointer-events:none}.piece.flying{z-index:8;pointer-events:none}.piece-svg{width:100%;height:100%;margin:0;display:block;object-fit:contain;pointer-events:none}.piece-tint{position:relative;display:block;width:100%;height:100%;isolation:isolate}.piece-tint img{width:100%;height:100%;margin:0;display:block;object-fit:contain;pointer-events:none}.piece-tint:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--piece-tint);mix-blend-mode:multiply;pointer-events:none;-webkit-mask-image:var(--piece-mask);mask-image:var(--piece-mask);-webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}.board-wrap.coords-hidden .square .coord{display:none}.tray-label{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;padding:0;font:inherit;font-size:.72rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin:0;text-align:left;display:block}.room.student .tray-hide{display:none}.tray-head{display:flex;align-items:center;justify-content:space-between;gap:.25rem;margin:0 0 .4rem .15rem}.tray-hide{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;color:var(--muted);width:32px;height:32px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;cursor:pointer;flex-shrink:0}.tray-hide:hover,.tray-hide:focus-visible{color:var(--ink);background:color-mix(in srgb,var(--cream-deep) 65%,white)}.tray-hide svg{display:block}.tray-block+.tray-block{margin-top:0}.tray-block.student-hidden{display:none!important}.room:not(.student) .tray-block.hidden-from-students .tray-hide{color:var(--ink)}.piece-pop{animation:pop-in .12s ease-out}@keyframes pop-in{0%{transform:scale(.72);opacity:.4}to{transform:scale(1);opacity:1}}.drag-ghost{position:fixed;left:0;top:0;z-index:10000;margin:0;padding:0;pointer-events:none;will-change:transform;transform:translate3d(-9999px,-9999px,0);filter:drop-shadow(0 8px 10px rgba(0,0,0,.28));transition:opacity .12s ease,filter .12s ease}.drag-ghost.will-remove{opacity:.35;filter:drop-shadow(0 4px 6px rgba(0,0,0,.2)) grayscale(.4)}.drag-ghost img,.drag-ghost .piece-svg,.drag-ghost .piece-tint,.drag-ghost .sticker-mark{width:100%;height:100%;margin:0;display:block;object-fit:contain;pointer-events:none}.drag-ghost-sticker .sticker-mark,.drag-ghost:has(.sticker-mark):not(:has(.piece-svg)) .sticker-mark{width:70%;height:70%;margin:15%}.ghost-sticker{position:absolute;width:38%;height:38%;right:2%;top:2%;pointer-events:none}.ghost-sticker .sticker-mark{width:100%;height:100%;filter:drop-shadow(0 1px 2px rgba(0,0,0,.35))}.ghost-piece-badge{position:absolute;width:38%;height:38%;right:2%;top:2%;pointer-events:none}.ghost-piece-badge .piece-svg,.ghost-piece-badge .piece-tint{width:100%;height:100%;margin:0;filter:drop-shadow(0 1px 2px rgba(0,0,0,.35))}body.is-dragging{cursor:grabbing!important}body.is-dragging *{cursor:grabbing!important;-webkit-user-select:none!important;user-select:none!important}.board-wrap.placing .square,.board-wrap.placing .reward-slot,.board-wrap.brushing .square,.board-wrap.brushing .piece,.board-wrap.penciling .square,.board-wrap.penciling .piece{cursor:crosshair}.clock-faces{display:flex;flex-direction:column;align-items:flex-start;gap:.35rem}.clock-face{display:none;align-items:center;justify-content:center;width:fit-content;min-height:2.75rem;padding:.45rem .85rem;border-radius:10px;background:#d8d8d8;border:2px solid #c4c4c4;box-shadow:none}.clock-face[data-side=simple]{display:flex}.clock-body.is-chess .clock-face[data-side=simple]{display:none}.clock-body.is-chess .clock-face[data-side=white],.clock-body.is-chess .clock-face[data-side=black]{display:flex}.clock-face.active{border-color:#8a8a8a;background:#e4e4e4;box-shadow:0 0 0 1px #0000000f}.clock-face.flagged{border-color:#9a9a9a;opacity:.72}.clock-time{display:flex;align-items:center;justify-content:center;line-height:0}.led-readout{display:inline-flex;align-items:center;gap:.12rem;filter:none}.led-digit{width:1.05rem;height:1.9rem;overflow:visible}.led-colon{width:.42rem;height:1.9rem;fill:#3a3a3a}.led-seg{fill:#c8c8c8}.led-seg.on{fill:#3a3a3a}.clock-face.active .led-seg.on,.clock-face.active .led-colon{fill:#2e2e2e}.clock-run{display:grid;grid-template-columns:1fr 1fr;gap:.35rem}.clock-icon-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:grid;place-items:center;height:40px;border:2px solid color-mix(in srgb,var(--frame) 16%,transparent);background:color-mix(in srgb,var(--cream) 55%,white);border-radius:10px;color:var(--ink);cursor:pointer}.clock-icon-btn:hover{background:color-mix(in srgb,var(--cream-deep) 45%,white)}.clock-icon-btn:focus-visible{outline:2px solid color-mix(in srgb,var(--ink) 35%,transparent);outline-offset:2px}.clock-icon-btn svg{display:block}.timer-tools{gap:.55rem}.clock-settings-sheet .clock-run{margin:0 0 .75rem}.clock-settings-sheet .clock-settings-body{padding:0;gap:.55rem}.clock-settings-body{display:flex;flex-direction:column;gap:.7rem;padding:.2rem 0 .4rem}.clock-kinds,.clock-presets,.clock-incs{display:flex;gap:.35rem}.clock-kind,.clock-preset,.clock-inc{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:1;min-width:0;height:40px;padding:0 .25rem;border:2px solid color-mix(in srgb,var(--frame) 16%,transparent);background:color-mix(in srgb,var(--cream) 55%,white);border-radius:10px;font:inherit;font-size:.78rem;font-weight:800;letter-spacing:.03em;text-transform:uppercase;color:var(--ink);cursor:pointer}.clock-kind-chess{display:none}.clock-settings-body.is-strict .clock-kind-chess,.tray.is-strict .clock-kind-chess{display:block}.clock-kind.active,.clock-preset.active,.clock-inc.active{background:color-mix(in srgb,var(--ink) 12%,white);border-color:color-mix(in srgb,var(--ink) 28%,transparent)}.clock-presets{display:none}.clock-settings-body.is-down .clock-presets,.clock-settings-body.is-chess .clock-presets{display:flex}.clock-incs{display:none}.clock-settings-body.is-chess .clock-incs{display:flex}.clock-remove{margin-top:.85rem;width:100%}.clock-settings-body.is-running .clock-kinds,.clock-settings-body.is-running .clock-presets,.clock-settings-body.is-running .clock-incs{pointer-events:none;opacity:.45}.tray{background:transparent;border:none;border-radius:0;padding:0;width:100%;min-width:0;max-width:100%;overflow-x:hidden;display:flex;flex-direction:column;gap:.55rem}.tray-block[data-block=pieces],.tray-block[data-block=stickers]{background:#fffcf6e6;border:2px solid rgba(92,61,46,.14);border-radius:14px;padding:.7rem .65rem .65rem}.tray-block-tints{background:transparent;border:none;border-radius:0;padding:.1rem .15rem}.tray.disabled .tray-block[data-block=pieces],.tray.disabled .tray-block[data-block=stickers],.tray.disabled .tray-block[data-block=tints]{display:none}.tray-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.4rem;width:100%;min-width:0}.tray-stickers{grid-template-columns:repeat(4,minmax(0,1fr));gap:.2rem;margin-top:.15rem;max-height:min(42dvh,420px);overflow-x:hidden;overflow-y:auto}.tray-cell{width:100%;height:auto;aspect-ratio:1;min-width:0;border-radius:10px;border:2px solid transparent;background:transparent;padding:0;cursor:grab;touch-action:none}.tray-pieces .tray-cell .piece-svg,.tray-pieces .tray-cell .piece-tint{width:100%;height:100%;margin:0;display:block}.tray-tints{display:flex;flex-wrap:nowrap;align-items:center;justify-content:space-between;gap:.22rem;margin-top:0}.tray-tint{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:0 0 auto;width:20px;height:20px;min-width:0;min-height:0;padding:0;border-radius:50%;border:2px solid color-mix(in srgb,var(--frame) 28%,transparent);background:var(--dot, #fff);cursor:pointer;touch-action:manipulation;box-shadow:inset 0 0 0 1px #ffffff59}.tray-tint[data-tint=white]{background:#fff}.tray-tint:hover,.tray-tint:focus-visible{border-color:var(--accent)}.tray-tint[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 1px var(--cream),0 0 0 2px var(--accent)}.tray-brush,.tray-pencil{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:0 0 auto;width:28px;height:28px;margin-left:.15rem;padding:0;display:grid;place-items:center;border-radius:8px;border:2px solid color-mix(in srgb,var(--frame) 16%,transparent);background:color-mix(in srgb,var(--cream) 55%,white);color:var(--ink);cursor:pointer}.tray-brush:hover,.tray-brush:focus-visible,.tray-pencil:hover,.tray-pencil:focus-visible{border-color:color-mix(in srgb,var(--ink) 28%,transparent)}.tray-brush.active,.tray-pencil.active{background:color-mix(in srgb,var(--accent) 22%,white);border-color:var(--accent);color:var(--ink)}.tray-brush svg,.tray-pencil svg{display:block}.tray-sticker .sticker-mark{width:78%;height:78%;margin:11%;display:block;object-fit:contain}.tray-cell.selected{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 18%,transparent)}.tray-sticker{padding:0}.tray-sticker-add{display:grid;place-items:center;cursor:pointer;border:2px dashed color-mix(in srgb,var(--frame) 28%,transparent);background:color-mix(in srgb,var(--cream) 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