*{margin:0;padding:0;box-sizing:border-box}:root{--bg-button-bar: #f0f0f0;--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-tertiary: #e8e8e8;--text-primary: #333333;--text-secondary: #555555;--border-primary: #000000;--border-secondary: #cccccc;--border-dashed: #dddddd;--letter-default-bg: #ADD8E6;--letter-default-border: #000000;--letter-valid-bg: #90EE90;--letter-valid-border: #228B22;--letter-invalid-bg: #FFB6C1;--letter-invalid-border: #DC143C;--letter-correct-bg: #98FB98;--letter-correct-border: #32CD32;--letter-incorrect-bg: #FFB6C1;--letter-incorrect-border: #DC143C;--letter-target-bg: #f0f0ff80;--letter-target-border: #c0c0dd40;--letter-target-text: #404080;--button-bg: #00000000;--button-border: #808080;--button-primary-bg: #4CAF50;--button-primary-border: #45a049;--button-primary-text: #ffffff;--button-secondary-bg: #6c757d20;--button-secondary-border: #5a6268;--button-secondary-text: #000000;--machine-bg: #f0f0f0;--machine-border: #333333;--machine-dot: #333333;--machine-icon-fill: black;--modal-bg: #f0f0f0;--modal-overlay: rgba(0, 0, 0, .5);--modal-text: #333333;--modal-close-icon: #333333;--menu-hover-bg: #f0f0f0}[data-theme=dark]{--bg-button-bar: #000000;--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--bg-tertiary: #3a3a3a;--text-primary: #e0e0e0;--text-secondary: #aaaaaa;--border-primary: #666666;--border-secondary: #444444;--border-dashed: #3a3a3a;--letter-default-bg: #2c5f7f;--letter-default-border: #4a90bf;--letter-valid-bg: #2d5f2d;--letter-valid-border: #4a9f4a;--letter-invalid-bg: #7f3f4f;--letter-invalid-border: #bf5f6f;--letter-correct-bg: #3f7f3f;--letter-correct-border: #5fbf5f;--letter-incorrect-bg: #8f5f4f;--letter-incorrect-border: #cf8f6f;--letter-target-bg: #3a3a4f;--letter-target-border: #5a5a7f;--letter-target-text: #b0b0ff;--button-bg: #00000000;--button-border: #666666;--button-primary-bg: #3d8f40;--button-primary-border: #357f38;--button-primary-text: #ffffff;--button-secondary-bg: #5a6268;--button-secondary-border: #4a5258;--button-secondary-text: #e0e0e0;--machine-bg: #2d2d2d;--machine-border: #666666;--machine-dot: #aaaaaa;--machine-icon-fill: lightgrey;--modal-bg: #2d2d2d;--modal-overlay: rgba(0, 0, 0, .7);--modal-text: #e0e0e0;--modal-close-icon: #e0e0e0;--menu-hover-bg: #3a3a3a}body{width:100%;min-width:250px;height:var(--app-height, 100vh);overflow:hidden;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s,color .3s}#root{width:100%;height:100%}._overlay_1egc2_2{position:fixed;inset:0;background-color:var(--modal-overlay);display:flex;justify-content:center;align-items:center;z-index:2000;padding:20px;transition:background-color .3s}._overlayBackdrop_1egc2_18{position:absolute;inset:0;background:transparent;border:none;padding:0;margin:0;cursor:default}._modal_1egc2_31{background:var(--modal-bg);border-radius:8px;max-width:600px;width:100%;max-height:80vh;overflow-y:auto;padding:32px;position:relative;box-shadow:0 4px 16px #0003;transition:background-color .3s}._closeButton_1egc2_44{position:absolute;top:16px;right:16px;background:none;border:none;cursor:pointer;padding:4px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:background-color .2s;color:var(--modal-close-icon)}._closeButton_1egc2_44:hover{background-color:var(--menu-hover-bg)}._closeButton_1egc2_44 img{width:24px;height:24px}[data-theme=dark] ._closeButton_1egc2_44 img{filter:invert(1)}._title_1egc2_75{text-align:center;font-weight:700;font-size:2em;margin-bottom:24px;color:var(--modal-text);transition:color .3s}._content_1egc2_84{line-height:1.6;color:var(--text-secondary);transition:color .3s}._content_1egc2_84 ul{margin-top:16px}._puzzleIDDisplay_1gykr_2{margin-bottom:16px;padding:8px 12px;background-color:var(--bg-secondary);border-radius:4px;font-size:.9em;color:var(--text-secondary)}._puzzleIDValue_1gykr_11{font-family:monospace;font-weight:600;color:var(--text-primary)}._settingGroup_1gykr_17{margin-bottom:20px}._label_1gykr_21{display:block;font-weight:600;margin-bottom:8px;color:var(--modal-text);font-size:1.1em;transition:color .3s}._select_1gykr_30{width:100%;padding:10px 12px;font-size:16px;border:2px solid var(--border-secondary);border-radius:4px;background-color:var(--bg-secondary);color:var(--text-primary);cursor:pointer;font-family:inherit;transition:all .3s}._select_1gykr_30:hover{border-color:var(--border-primary)}._select_1gykr_30:focus{outline:none;border-color:#4299e1;box-shadow:0 0 0 3px #4299e11a}._checkboxList_1gykr_53{display:flex;flex-direction:column;gap:0px;max-height:200px;overflow-y:auto;padding:1px;border:1px solid var(--border-secondary);border-radius:4px;background-color:var(--bg-secondary)}._checkboxLabel_1gykr_65{display:flex;align-items:center;gap:8px;cursor:pointer;padding:1px;border-radius:4px;transition:background-color .2s}._checkboxLabel_1gykr_65:hover{background-color:var(--menu-hover-bg)}._checkbox_1gykr_53{cursor:pointer;width:18px;height:18px}._message_1cid0_5{white-space:pre-wrap;line-height:1.3;margin-bottom:12px}._message_1cid0_5 p{margin-bottom:2px}._message_1cid0_5 li{margin-bottom:2px;margin-left:20px;line-height:1.3}._buttons_1cid0_21{display:flex;gap:12px;justify-content:flex-end}._primaryButton_1cid0_27{padding:6px 24px;font-size:16px;cursor:pointer;background-color:var(--button-primary-bg);color:var(--button-primary-text);border:2px solid var(--button-primary-border);border-radius:4px;transition:opacity .2s}._primaryButton_1cid0_27:hover{opacity:.9}._secondaryButton_1cid0_42{padding:6px 24px;font-size:16px;cursor:pointer;background-color:var(--button-secondary-bg);color:var(--button-secondary-text);border:2px solid var(--button-secondary-border);border-radius:4px;transition:opacity .2s}._secondaryButton_1cid0_42:hover{opacity:.9}._form_afwv2_1{display:flex;flex-direction:column;gap:1rem;margin-bottom:1rem}._field_afwv2_8{display:flex;flex-direction:column;gap:.4rem}._field_afwv2_8 label{font-weight:600;font-size:.9rem;color:var(--text-color)}._field_afwv2_8 input{padding:.75rem;font-size:1rem;border:2px solid var(--border-color);border-radius:6px;background-color:var(--background-secondary, #f5f5f5);color:var(--text-color);transition:border-color .2s,background-color .2s}._field_afwv2_8 input:focus{outline:none;border-color:var(--letter-correct-border);background-color:var(--background-secondary, #efefef)}._field_afwv2_8 input:disabled{opacity:.6;cursor:not-allowed}._hint_afwv2_41{font-size:.85rem;color:var(--text-secondary, #666)}._error_afwv2_46{padding:.75rem;background-color:#fee;border:1px solid #fcc;border-radius:4px;color:#c00;font-size:.9rem}._successMessage_afwv2_55{display:flex;flex-direction:column;gap:1rem;text-align:center}._successMessage_afwv2_55 p{margin:0;font-size:1rem;line-height:1.5;color:var(--text-color)}._submitButton_afwv2_69{width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;text-align:center;padding:.5rem;font-size:1rem;font-weight:700;color:var(--text-color);background-color:var(--letter-correct-bg);border:2px solid var(--letter-correct-border);cursor:pointer;transition:transform .2s,box-shadow .2s;margin:.5rem auto}._submitButton_afwv2_69:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 12px #00000026}._submitButton_afwv2_69:disabled{opacity:.5;cursor:not-allowed}._switchMode_afwv2_98{text-align:center;font-size:.9rem;color:var(--text-secondary, #666)}._link_afwv2_104{background:none;border:none;color:var(--primary-color, #007bff);text-decoration:underline;cursor:pointer;font-size:inherit;padding:0}._link_afwv2_104:hover{color:var(--primary-hover, #0056b3)}._guestNote_afwv2_118{padding-top:1.5rem;border-top:1px solid var(--border-color);text-align:center}._guestNote_afwv2_118 p{margin:0 0 1rem;color:var(--text-secondary, #666);font-size:.9rem}._guestButton_afwv2_130{width:90px;height:90px;border-radius:50%;display:flex;align-items:center;justify-content:center;text-align:center;padding:.5rem;font-size:.95rem;color:var(--text-color);background-color:var(--letter-correct-bg);border:2px solid var(--letter-correct-border);cursor:pointer;transition:transform .2s,box-shadow .2s;margin:0 auto .5rem}._guestButton_afwv2_130:hover{transform:scale(1.05);box-shadow:0 4px 12px #00000026}._guestNote_afwv2_118 small{display:block;margin-top:.5rem;font-size:.8rem;color:var(--text-tertiary, #999)}@media(prefers-color-scheme:dark){._field_afwv2_8 input{background-color:#2a2a2a;border-color:#444}._error_afwv2_46{background-color:#3a1a1a;border-color:#6a2a2a;color:#f66}._guestButton_afwv2_130:hover{background-color:#3a3a3a}}._container_1848k_1{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:1rem}._spinner_1848k_10{width:48px;height:48px;border:4px solid var(--border-color, #ddd);border-top-color:var(--primary-color, #007bff);border-radius:50%;animation:_spin_1848k_10 .8s linear infinite}@keyframes _spin_1848k_10{to{transform:rotate(360deg)}}._text_1848k_25{color:var(--text-secondary, #666);font-size:.9rem}.puzzle-calendar{padding:20px;max-width:1400px;margin:0 auto}.calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:10px;background:#f5f5f5;border-radius:8px}.calendar-header h2{margin:0;font-size:24px}.calendar-header button{padding:8px 16px;font-size:16px;cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:4px}.calendar-header button:hover{background:#e9e9e9}.calendar-nav{display:flex;align-items:center;gap:12px}@media(max-width:600px){.calendar-header .nav-label{display:none}}.calendar-home-link{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;padding:6px;background:#fff;border:1px solid #ddd;border-radius:4px}.calendar-home-link:hover{background:#e9e9e9}.calendar-home-link img{width:100%;height:100%}.calendar-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}.calendar-day{border:2px solid #ddd;border-radius:8px;padding:12px;background:#fff;min-height:200px;position:relative}.calendar-day.today{border-color:#2196f3;box-shadow:0 0 12px 2px #2196f333;background:#e3f2fd}.calendar-day.past{opacity:.6}.day-number{font-size:20px;font-weight:700;margin-bottom:10px;color:#333;display:flex;align-items:center}.today-marker{margin-left:8px;color:#2196f3;font-size:22px;vertical-align:middle;filter:drop-shadow(0 0 2px #2196f3)}.generate-all-btn{width:100%;padding:10px;margin-bottom:10px;background:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:700}.generate-all-btn:hover:not(:disabled){background:#45a049}.generate-all-btn:disabled{background:#ccc;cursor:not-allowed}.puzzle-slot{margin-bottom:10px;padding:8px;border-radius:4px;background:#f9f9f9}.puzzle-slot.easy{border-left:4px solid #4CAF50}.puzzle-slot.medium{border-left:4px solid #FF9800}.puzzle-slot.hard{border-left:4px solid #f44336}.slot-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.slot-name{font-weight:700;font-size:12px;text-transform:uppercase;color:#666}.slot-puzzle{font-weight:light;font-size:12px;color:#666}.regenerate-btn{padding:2px 8px;font-size:16px;cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:3px;min-width:30px}.regenerate-btn:hover:not(:disabled){background:#e9e9e9}.regenerate-btn:disabled{cursor:not-allowed;opacity:.5}.puzzle-info{font-size:12px}.puzzle-words{font-family:monospace;font-weight:700;margin-bottom:4px;color:#333}.puzzle-link{text-decoration:none;color:inherit;cursor:pointer}.puzzle-link:hover{text-decoration:underline}.puzzle-meta{color:#666;font-size:11px;display:flex;justify-content:space-between;align-items:center}.sessions-link{color:#2196f3;text-decoration:none;font-weight:600;cursor:pointer;transition:color .2s}.sessions-link:hover{color:#1976d2;text-decoration:underline}.loading{text-align:center;padding:40px;font-size:18px;color:#666}._toast_18ot3_1{display:flex;align-items:center;gap:12px;padding:16px;background-color:var(--modal-bg);color:var(--text-primary);border-left:4px solid var(--letter-invalid-border);border-radius:8px;box-shadow:0 4px 12px #00000026;max-width:400px;animation:_slideIn_18ot3_1 .3s ease-out}._toast_18ot3_1._exiting_18ot3_15{animation:_slideOut_18ot3_1 .2s ease-in forwards}._icon_18ot3_19{width:20px;height:20px;flex-shrink:0;color:var(--letter-invalid-border)}._message_18ot3_26{flex:1;font-size:14px;line-height:1.4}._closeButton_18ot3_32{background:transparent;border:none;padding:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:background-color .2s}._closeButton_18ot3_32:hover{background-color:#0000001a}._closeIcon_18ot3_48{width:16px;height:16px;opacity:.6}._closeButton_18ot3_32:hover ._closeIcon_18ot3_48{opacity:1}@keyframes _slideIn_18ot3_1{0%{transform:translate(400px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes _slideOut_18ot3_1{0%{transform:translate(0);opacity:1}to{transform:translate(400px);opacity:0}}._container_1x2xt_1{position:fixed;top:20px;right:20px;z-index:3000;display:flex;flex-direction:column;gap:12px;pointer-events:none}._container_1x2xt_1>*{pointer-events:auto}._tooltipWrapper_vjccy_1{position:relative;display:inline-block}._tooltip_vjccy_1{position:absolute;background-color:#505050e6;color:#fff;padding:8px 12px;border-radius:4px;font-size:14px;max-width:30rem;min-width:10rem;white-space:normal;word-wrap:break-word;text-align:center;z-index:1000;pointer-events:none;box-shadow:0 2px 8px #0003}._center_vjccy_24{left:50%;transform:translate(-50%)}._left_vjccy_29{left:0}._right_vjccy_33{right:0}._above_vjccy_37{bottom:calc(100% + 8px)}._above_vjccy_37._center_vjccy_24:after,._below_vjccy_42._center_vjccy_24:after{left:50%;transform:translate(-50%)}._above_vjccy_37._left_vjccy_29:after,._below_vjccy_42._left_vjccy_29:after{left:16px}._above_vjccy_37._right_vjccy_33:after,._below_vjccy_42._right_vjccy_33:after{right:16px}._above_vjccy_37:after{content:"";position:absolute;top:100%;border:6px solid transparent;border-top-color:#000000e6}._below_vjccy_42{top:calc(100% + 8px)}._below_vjccy_42:after{content:"";position:absolute;bottom:100%;border:6px solid transparent;border-bottom-color:#000000e6}._squareButton_2qhx1_1{background-color:var(--button-bg);cursor:pointer;box-sizing:border-box;display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none;transition:background-color .3s}._squareButton_2qhx1_1 img,._squareButton_2qhx1_1 svg{filter:brightness(0) saturate(100%) invert(50%) sepia(0%) saturate(0%)}._squareButton_2qhx1_1:hover:not(._disabled_2qhx1_17){opacity:.8}._squareButton_2qhx1_1._disabled_2qhx1_17{opacity:.3;cursor:not-allowed}._letter_eqxl2_1{background-color:var(--letter-default-bg);border:2px solid var(--letter-default-border);border-radius:50%;cursor:pointer;box-sizing:border-box;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:700;-webkit-user-select:none;user-select:none;color:var(--text-primary);transition:all .2s ease;position:relative;z-index:20}._valid_eqxl2_20{background-color:var(--letter-valid-bg);border-color:var(--letter-valid-border)}._invalid_eqxl2_25{border-color:var(--letter-invalid-border);opacity:.8;background-size:16px 16px;background-image:repeating-linear-gradient(-45deg,var(--letter-invalid-bg) 0,var(--letter-invalid-bg) 1px,var(--bg-primary) 0,var(--bg-primary) 50%)}._correct_eqxl2_33{background-color:var(--letter-correct-bg);border-color:var(--letter-correct-border)}._incorrect_eqxl2_38{background-color:var(--letter-incorrect-bg);border-color:var(--letter-incorrect-border);background-size:8px 8px;background-image:repeating-linear-gradient(45deg,var(--letter-invalid-bg) 0,var(--letter-invalid-bg) 1px,var(--bg-primary) 0,var(--bg-primary) 50%)}._target_eqxl2_45{color:var(--letter-target-text);background-color:var(--letter-target-bg);border-color:var(--letter-target-border)}._focus_eqxl2_52{box-shadow:0 0 0 3px #4299e180;border-color:#4299e1;transform:scale(1.05)}._readonly_eqxl2_59{cursor:default;opacity:.9}._letter_eqxl2_1:not(._readonly_eqxl2_59):hover{opacity:.8}._word_gythn_1{display:flex;flex-direction:row;gap:4px;padding:4px 8px}._contentWrapper_19uoi_2{display:flex;justify-content:center;margin:20px 0}._imageContainer_19uoi_9{width:33.333%;position:relative;display:flex;align-items:center;justify-content:center}._imageContainer_19uoi_9 img{width:100%;height:auto;border-radius:4px}._demoImageLight_19uoi_24{display:block}._demoImageDark_19uoi_28,[data-theme=dark] ._demoImageLight_19uoi_24{display:none}[data-theme=dark] ._demoImageDark_19uoi_28{display:block}._infoContent_19uoi_42 h1{font-size:2em;font-weight:700;margin-bottom:16px;color:var(--modal-text);text-align:center;transition:color .3s}._infoContent_19uoi_42 h2{font-size:1.3em;font-weight:600;margin-top:20px;margin-bottom:2px;color:var(--modal-text);transition:color .3s}._infoContent_19uoi_42 p{margin-bottom:6px;line-height:1.6;margin-left:8px}._infoContent_19uoi_42 br{margin:0}._infoContent_19uoi_42 ul{margin-left:20px;margin-bottom:6px;list-style-type:disc}._infoContent_19uoi_42 li{margin-bottom:2px;margin-left:20px;line-height:1.5}@media(max-width:768px){._imageContainer_19uoi_9{width:50%}}@media(max-width:480px){._imageContainer_19uoi_9{width:80%}}._container_82s39_1{display:flex;flex-direction:column;align-items:center;min-height:100vh;padding:0;gap:1.5rem}._topBar_82s39_11{display:flex;flex-direction:row;align-items:center;background-color:var(--bg-button-bar);width:100%;padding:.5rem 1rem;margin-bottom:1rem}._userSection_82s39_22{display:flex;align-items:center;padding:.5rem 0}._flexSpace_82s39_28{flex:1}._buttonGroup_82s39_32{display:flex;gap:.5rem;align-items:center}._userEmail_82s39_38{color:var(--text-color);font-size:.9rem;font-weight:500}._loginButton_82s39_44{background:none;border:none;color:var(--text-color);font-size:.9rem;cursor:pointer;text-decoration:underline;padding:.5rem}._loginButton_82s39_44:hover{color:var(--primary-color, #007bff)}._menu_82s39_59{position:absolute;top:100%;right:0;background:var(--background-color, white);border:1px solid var(--border-color, #ddd);border-radius:4px;box-shadow:0 2px 8px #00000026;min-width:150px;z-index:1000;margin-top:4px}._menu_82s39_59 button{display:block;width:100%;padding:.75rem 1rem;text-align:left;background:none;border:none;color:var(--text-color);cursor:pointer;font-size:.9rem}._menu_82s39_59 button:hover{background:var(--background-secondary, #f5f5f5)}._iconContainer_82s39_89{width:80px;height:80px;margin-top:2rem;margin-bottom:.5rem}._icon_82s39_89{width:100%;height:100%;object-fit:contain}._title_82s39_103{font-size:3rem;font-weight:700;margin:0;color:var(--text-color)}._titleWords_82s39_111{display:flex;flex-direction:column;align-items:center;gap:.25rem;margin-top:1rem}._subtitle_82s39_120{font-size:1rem;font-weight:300;color:var(--text-secondary, #666);margin:0 0 1rem}._noPuzzlesMessage_82s39_128{font-size:1.1rem;font-weight:400;color:var(--text-color);margin:1rem 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15px;font-size:20px;color:var(--text-secondary)}.puzzle-details{display:flex;flex-direction:column;gap:10px}.puzzle-link-container{font-size:18px}.puzzle-play-link{color:var(--accent-color);text-decoration:none;font-weight:600;transition:color .2s}.puzzle-play-link:hover{color:var(--accent-hover);text-decoration:underline}.puzzle-meta{color:var(--text-secondary);font-size:14px}.sessions-table-container{overflow-x:auto;margin-bottom:20px}.sessions-table{width:100%;border-collapse:collapse;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.sessions-table thead{background-color:var(--bg-tertiary)}.sessions-table th{padding:12px 16px;text-align:left;font-weight:600;color:var(--text-secondary);border-bottom:2px solid var(--border-color)}.sessions-table td{padding:12px 16px;border-bottom:1px solid var(--border-color)}.sessions-table tbody tr:last-child td{border-bottom:none}.sessions-table tbody tr:hover{background-color:var(--bg-hover)}.revealed-cell{text-align:center}.checkmark{color:#4caf50;font-size:18px;font-weight:700}.trace-link{color:var(--accent-color);text-decoration:none;font-weight:500;transition:color .2s}.trace-link:hover{color:var(--accent-hover);text-decoration:underline}.no-trace{color:var(--text-tertiary)}.no-sessions{text-align:center;padding:40px 16px;color:var(--text-secondary);font-style:italic}.sessions-summary{padding:12px 16px;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-secondary);font-size:14px}.sessions-loading,.sessions-error{min-height:100vh;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-secondary)}.sessions-error{color:#f44336}@media(max-width:768px){.sessions-container{padding:10px}.sessions-header h1{font-size:22px}.sessions-table{font-size:14px}.sessions-table th,.sessions-table td{padding:8px 12px}}