:root{--bg-color: #242424;--text-color: rgba(255, 255, 255, .87);--button-bg-color: #1a1a1a;--button-text-color: rgba(255, 255, 255, .87);--piece-color: #4c4a4a;color-scheme:dark;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:var(--text-color);background-color:var(--bg-color);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.light-mode{--bg-color: #fafafa;--text-color: #484b6a;--button-bg-color: #e4e5f1;--button-text-color: #484b6a;--piece-color: #d2d3db;color-scheme:light}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{background-color:var(--bg-color);color:var(--text-color);margin:0;display:flex;justify-content:center;align-items:flex-start;min-width:320px;min-height:100vh}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--button-bg-color);cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.solve.svelte-168ucse.svelte-168ucse{display:flex;flex-direction:column;justify-content:center;align-items:center;padding-top:20px;transition:margin-bottom .15s ease}.solve.has-status.svelte-168ucse.svelte-168ucse{margin-bottom:40px}.button-container.svelte-168ucse.svelte-168ucse{display:flex;flex-direction:column;gap:8px;align-items:center;width:100%}.button-row.svelte-168ucse.svelte-168ucse{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.button-row.svelte-168ucse 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ease;touch-action:manipulation}.nav-btn.svelte-168ucse.svelte-168ucse:hover{transform:scale(1.05)}.nav-btn.svelte-168ucse.svelte-168ucse:active{transform:scale(.95)}.solution-counter.svelte-168ucse.svelte-168ucse{font-weight:700;font-size:14px;min-width:80px;text-align:center}.sidebar-container.svelte-19ixxrs{position:fixed;top:0;left:0;height:100dvh;z-index:3}.sidebar.svelte-19ixxrs{position:absolute;top:0;left:0;height:100%;width:350px;background-color:var(--piece-color);transition:transform .3s ease-in-out;transform:translate(-100%);z-index:3;display:flex;flex-direction:column}.sidebar.open.svelte-19ixxrs{transform:translate(0)}.sidebar.dragging.svelte-19ixxrs{transition:none}.toggle-btn.svelte-19ixxrs{position:absolute;top:10px;padding:5px 10px;font-size:12px;z-index:4;transition:transform .3s ease-in-out;transform:translate(0);touch-action:manipulation}.toggle-btn.open.svelte-19ixxrs{transform:translate(300px)}.sidebar-content.svelte-19ixxrs{padding:20px;overflow-y:auto;flex-grow:1}.sidebar-content.svelte-19ixxrs::-webkit-scrollbar{width:0px;background:transparent}@supports (overflow: overlay){.sidebar-content.svelte-19ixxrs{overflow-y:overlay}}@media (max-width: 768px){.sidebar.svelte-19ixxrs{width:100vw}.toggle-btn.svelte-19ixxrs{top:40px}.toggle-btn.open.svelte-19ixxrs{transform:translate(88vw)}}.gear-btn.svelte-1418x9l.svelte-1418x9l{background:none;border:none;cursor:pointer;padding:6px;color:var(--text-color);display:flex;align-items:center;justify-content:center;touch-action:manipulation}.gear-btn.svelte-1418x9l.svelte-1418x9l:hover{opacity:.8}.backdrop.svelte-1418x9l.svelte-1418x9l{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;z-index:1000;display:flex;align-items:center;justify-content:center;animation:svelte-1418x9l-fade-in .15s 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transparent;cursor:pointer;touch-action:manipulation}.chip.selected.svelte-1418x9l.svelte-1418x9l{background:#4a90d9;color:#fff}.custom-input.svelte-1418x9l.svelte-1418x9l{width:70px;text-align:center;font-size:16px}.primary-btn.svelte-1418x9l.svelte-1418x9l{margin-top:4px;background:linear-gradient(135deg,#e85d04,#dc2f02);color:#fff;border:none;padding:10px 16px;font-size:.95rem;font-weight:600;border-radius:8px;cursor:pointer;touch-action:manipulation}.primary-btn.svelte-1418x9l.svelte-1418x9l:hover{background:linear-gradient(135deg,#dc2f02,#9d0208)}.active-note.svelte-1418x9l.svelte-1418x9l{margin:0;font-size:.9rem;opacity:.8}@keyframes svelte-1418x9l-fade-in{0%{opacity:0}to{opacity:1}}@keyframes svelte-1418x9l-scale-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@media (max-width: 480px){.modal.svelte-1418x9l.svelte-1418x9l{width:calc(100vw - 16px)}.modal-header.svelte-1418x9l.svelte-1418x9l{padding:14px 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solid transparent}.piece.selected.svelte-tkq306.svelte-tkq306{border-color:var(--button-text-color)}.piece.dragging.svelte-tkq306.svelte-tkq306{border-color:transparent}.piece.placed.svelte-tkq306.svelte-tkq306{cursor:not-allowed;opacity:.1}.piece-row.svelte-tkq306.svelte-tkq306{display:flex}.piece-cell.svelte-tkq306.svelte-tkq306{width:20px;height:20px}.circle.hovered.svelte-tkq306.svelte-tkq306{opacity:.2}.piece-buttons.svelte-tkq306.svelte-tkq306{display:flex;justify-content:center;gap:5px}.drag-preview.svelte-tkq306.svelte-tkq306{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;will-change:transform;transform:translate3d(-9999px,-9999px,0)}.drag-preview-inner.svelte-tkq306.svelte-tkq306{transform:translate(-50%,-50%);padding:4px;opacity:.95}.dnd-poly-drag-image{opacity:0!important}.drag-actions.svelte-tkq306.svelte-tkq306{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 4.5rem);transform:translate(-50%);display:flex;gap:10px;z-index:9998;pointer-events:auto;padding:6px;border-radius:12px;background:#141414d9;box-shadow:0 6px 20px #00000040;animation:svelte-tkq306-drag-actions-in .18s ease-out}@media (min-width: 1024px){.drag-actions.svelte-tkq306.svelte-tkq306{left:auto;right:1.25rem;bottom:auto;top:50%;transform:translateY(-50%);flex-direction:column;animation:svelte-tkq306-drag-actions-in-right .18s ease-out}}.drag-action-btn.svelte-tkq306.svelte-tkq306{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:84px;min-height:60px;padding:9px 15px;border-radius:10px;background:var(--button-bg-color, #2d7d46);color:var(--button-text-color, #ffffff);border:2px dashed transparent;cursor:grab;-webkit-user-select:none;user-select:none;touch-action:none;transition:transform .1s ease,border-color .1s ease,background-color .1s ease}.drag-action-btn.svelte-tkq306.svelte-tkq306:hover,.drag-action-btn.svelte-tkq306.svelte-tkq306:active{border-color:#ffffffe6;transform:translateY(-2px) scale(1.05)}.drag-action-icon.svelte-tkq306.svelte-tkq306{font-size:21px;font-weight:700;line-height:1;pointer-events:none}.drag-action-label.svelte-tkq306.svelte-tkq306{font-size:12px;margin-top:3px;text-transform:uppercase;letter-spacing:.5px;pointer-events:none}@keyframes svelte-tkq306-drag-actions-in{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes svelte-tkq306-drag-actions-in-right{0%{opacity:0;transform:translateY(-50%) translate(20px)}to{opacity:1;transform:translateY(-50%) translate(0)}}.piece-buttons.svelte-tkq306 button.svelte-tkq306{padding:5px 10px;font-size:12px;touch-action:manipulation}.controls.svelte-tkq306.svelte-tkq306{position:absolute;top:1rem;right:1rem;z-index:2;display:flex;flex-direction:column;align-items:flex-end;gap:10px}.timer-container.svelte-tkq306.svelte-tkq306{display:flex;align-items:center;gap:8px}.cancel-challenge-btn.svelte-tkq306.svelte-tkq306{display:flex;align-items:center;justify-content:center;background:var(--button-bg-color);border:1px solid transparent;color:var(--text-color);padding:4px 8px;border-radius:6px;cursor:pointer;touch-action:manipulation}.cancel-challenge-btn.svelte-tkq306.svelte-tkq306:hover{opacity:.85}.timer.svelte-tkq306.svelte-tkq306{font-size:1rem;font-weight:700;padding:4px 10px;border-radius:6px;transition:all .3s ease}.timer.countdown-mode.svelte-tkq306.svelte-tkq306{background:linear-gradient(135deg,#2d7d46,#236b3a);color:#fff;animation:svelte-tkq306-pulse-glow 2s ease-in-out infinite}.timer.countdown-warning.svelte-tkq306.svelte-tkq306{background:linear-gradient(135deg,#e6a817,#cc8f00);color:#fff;animation:svelte-tkq306-warning-pulse 1.5s ease-in-out infinite}.timer.urgent.svelte-tkq306.svelte-tkq306{background:linear-gradient(135deg,#d94a4a,#bd3535);color:#fff;animation:svelte-tkq306-urgent-pulse .5s ease-in-out infinite}@keyframes svelte-tkq306-pulse-glow{0%,to{box-shadow:0 0 5px #2d7d464d}50%{box-shadow:0 0 15px #2d7d4680}}@keyframes svelte-tkq306-warning-pulse{0%,to{box-shadow:0 0 5px #e6a8174d}50%{box-shadow:0 0 12px #e6a81780}}@keyframes svelte-tkq306-urgent-pulse{0%,to{box-shadow:0 0 5px #d94a4a66;transform:scale(1)}50%{box-shadow:0 0 20px #d94a4ab3;transform:scale(1.02)}}@media (max-width: 768px){.circle.svelte-tkq306.svelte-tkq306{width:25px;height:25px}.piece-cell.svelte-tkq306.svelte-tkq306{width:15px;height:15px}.piece-buttons.svelte-tkq306 button.svelte-tkq306{padding:3px 6px;font-size:11px;touch-action:manipulation}.board.svelte-tkq306.svelte-tkq306{transform:scale(.9);margin:0 auto}.controls.svelte-tkq306.svelte-tkq306{position:static;width:100%;order:-1;align-items:center}.timer-container.svelte-tkq306.svelte-tkq306{display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0;margin:0;position:relative;width:100%;min-height:34px}.settings-anchor.svelte-tkq306.svelte-tkq306{position:absolute;right:.5rem;top:0;bottom:0;display:flex;align-items:center}}@media (max-width: 480px){.circle.svelte-tkq306.svelte-tkq306{width:25;height:25}.board.svelte-tkq306.svelte-tkq306{transform:scale(.8)}.piece-container.svelte-tkq306.svelte-tkq306{max-width:90px}.drag-action-btn.svelte-tkq306.svelte-tkq306{min-width:72px;min-height:52px;padding:7px 12px}.drag-action-icon.svelte-tkq306.svelte-tkq306{font-size:19px}.drag-action-label.svelte-tkq306.svelte-tkq306{font-size:11px}}