:root{--primary:#4caf50;--primary-dark:#388e3c;--primary-light:#a5d6a7;--danger:#c62828;--bg:#f0f2f5;--surface:#fff;--border:#d0d7de;--text:#1a1a1a;--text-secondary:#495057;--text-muted:#868e96;--radius:16px;--radius-sm:10px;--shadow:0 2px 8px #00000014;--font:"Segoe UI", Roboto, system-ui, sans-serif, "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji";--spacing-xs:4px;--spacing-sm:8px;--spacing-md:12px;--spacing-lg:16px;--spacing-xl:24px;--transition:.2s ease}:root .tile-bg,:root .card__bg,:root .sentence-word,:root .quick-btn,:root .category,:root .game-cell,:root .learning-card .card-image{text-shadow:none!important;-webkit-text-stroke:0!important}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;margin:0;padding:0}input,textarea,select{-webkit-user-select:text;user-select:text}html,body{height:100dvh;font-family:var(--font);background:var(--bg);color:var(--text);flex-direction:column;display:flex;overflow:hidden}#app{flex-direction:column;height:100dvh;display:flex;overflow:hidden}.app-header{background:var(--surface);border-bottom:1px solid var(--border);justify-content:flex-end;align-items:center;gap:var(--spacing-sm);z-index:10;flex-shrink:0;padding:4px 12px;display:flex}.back-btn{display:none}.profile-fab{background:var(--surface);border:1px solid var(--border);cursor:pointer;width:34px;height:34px;box-shadow:var(--shadow);border-radius:50%;flex-shrink:0;margin-left:auto;font-size:20px}.mode-bar{gap:var(--spacing-xs);padding:var(--spacing-sm);scrollbar-width:none;background:var(--surface);flex:1;display:flex;overflow-x:auto}.mode-bar{gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-sm);scrollbar-width:none;background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:nowrap;flex:1;display:flex;overflow-x:auto}.mode-bar::-webkit-scrollbar{display:none}.mode-btn{padding:var(--spacing-sm) var(--spacing-md);white-space:nowrap;cursor:pointer;transition:background var(--transition), color var(--transition);color:var(--text-secondary);background:#e9ecef;border:none;border-radius:20px;font-size:14px;font-weight:600}.mode-btn.active{background:var(--primary);color:#000}.mode-btn:active{transform:scale(.96)}.categories-wrap{scrollbar-width:none;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0;overflow-x:auto}.categories-wrap::-webkit-scrollbar{display:none}.categories{gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);flex-wrap:nowrap;display:flex}.category{padding:var(--spacing-xs) var(--spacing-md);white-space:nowrap;cursor:pointer;color:var(--text-secondary);transition:background var(--transition), color var(--transition);align-items:center;gap:var(--spacing-xs);background:#e9ecef;border-radius:20px;font-size:14px;font-weight:500;display:flex;position:relative}.category.active{background:var(--primary);color:#000}.category:active{transform:scale(.96)}.category-add{background:var(--primary-light);border:1px dashed var(--primary);color:var(--text)}.category-hidden{opacity:.6;text-decoration:line-through}.category .cat-actions{gap:var(--spacing-xs);display:none}.category.edit-mode .cat-actions{display:flex}.category .cat-actions button{cursor:pointer;padding:0 var(--spacing-xs);background:0 0;border:none;font-size:14px}.category.drag-over{background:var(--primary-light);border:2px dashed var(--primary);box-shadow:var(--shadow);transform:scale(1.05)}.category-danger{background:var(--danger);color:#fff}.category-danger:active{background:#b71c1c}.grid-container{padding:var(--grid-padding,var(--spacing-sm));background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);margin:var(--spacing-sm) var(--spacing-md) 0 var(--spacing-md);flex:1;min-height:0;overflow-y:auto}.grid-container.write-mode{margin:var(--spacing-sm) var(--spacing-md) 0 var(--spacing-md);background:0 0;border:none;flex-direction:column;min-height:0;padding:0;display:flex}.grid-container.write-mode textarea{width:100%;padding:var(--spacing-lg);border:2px solid var(--primary);border-radius:var(--radius);background:var(--surface);resize:none;font-size:20px;font-family:var(--font);box-sizing:border-box;outline:none;flex:1;min-height:0}.say-content{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.tiles-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(80px,1fr));display:grid}.card{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;height:130px;box-shadow:var(--shadow);flex-direction:column;transition:transform .15s,border-color .15s;display:flex;overflow:hidden}.card:active{transform:scale(.96)}.card--active{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary)}.card--add{background:var(--primary-light);border:2px dashed var(--primary)}.card__bg{background-position:50%;background-size:contain;flex:1;justify-content:center;align-items:center;font-size:48px;display:flex}.card__label{padding:var(--spacing-xs);text-align:center;border-top:1px solid var(--border);background:#ffffffe6;font-size:14px;font-weight:600}.card.done{opacity:.6;background:#f1f3f5}.card.done .card__label{color:var(--text-muted);text-decoration:line-through}.bottom-panel{background:var(--bg);padding:var(--spacing-sm) var(--spacing-md);padding-bottom:calc(var(--spacing-sm) + env(safe-area-inset-bottom,0px));gap:var(--spacing-sm);border-top:1px solid var(--border);flex-direction:column;flex-shrink:0;transition:transform .2s;display:flex}.keyboard-open .bottom-panel{transform:translateY(calc(-1 * var(--keyboard-offset,0px)))}.bottom-panel.hidden{display:none!important}.quick-buttons{gap:var(--spacing-sm);scrollbar-width:none;padding-bottom:2px;display:flex;overflow-x:auto}.quick-buttons::-webkit-scrollbar{display:none}.quick-btn{background:var(--surface);border:1px solid var(--border);padding:var(--spacing-xs) var(--spacing-md);white-space:nowrap;cursor:pointer;align-items:center;gap:var(--spacing-sm);transition:background var(--transition);border-radius:20px;flex-shrink:0;font-size:14px;display:flex}.quick-btn:active{background:#e9ecef}.quick-btn img{object-fit:contain;width:24px;height:24px}.sentence-bar{background:var(--surface);border:2px solid var(--primary);width:100%;min-height:44px;box-shadow:var(--shadow);border-radius:24px;align-items:center;display:flex;overflow:hidden}.sentence-btn{cursor:pointer;color:#fff;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;min-width:22px;min-height:44px;font-size:20px;transition:background .2s,transform .1s;display:flex}.sentence-btn:active{transform:scale(.92)}.sentence-btn-clear{background:var(--danger);border-radius:4px}.sentence-btn-speak{background:var(--primary);color:#000;border-radius:4px}.sentence-words-wrapper{gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);scroll-behavior:smooth;-webkit-overflow-scrolling:touch;background:var(--surface);flex-wrap:nowrap;flex:1;min-width:0;display:flex;overflow:auto hidden}.sentence-words-wrapper::-webkit-scrollbar{height:4px}.sentence-words-wrapper::-webkit-scrollbar-thumb{background:var(--primary-light);border-radius:2px}.sentence-word{background:var(--primary-light);color:#000;padding:var(--spacing-xs) var(--spacing-md);cursor:pointer;align-items:center;gap:var(--spacing-xs);white-space:nowrap;border-radius:30px;flex-shrink:0;font-size:16px;font-weight:500;transition:background .3s,transform .2s;display:inline-flex}.sentence-word:active{background:var(--primary)}.sentence-word.highlight{transform:scale(1.1);box-shadow:0 0 15px #4caf5099;background:var(--primary)!important;color:#fff!important}.modal{z-index:1000;opacity:0;visibility:hidden;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);width:100%;height:100%;padding:var(--spacing-lg);background:#0009;justify-content:center;align-items:center;transition:opacity .25s,visibility .25s;display:flex;position:fixed;top:0;left:0}.modal.visible{opacity:1;visibility:visible}.modal-content{background:var(--surface);border-radius:var(--radius);flex-direction:column;width:100%;max-width:600px;max-height:95vh;display:flex;overflow:hidden;box-shadow:0 12px 40px #0000004d}.modal-header{padding:var(--spacing-lg) var(--spacing-xl) var(--spacing-md);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;display:flex}.modal-title-wrap{align-items:center;gap:var(--spacing-md);display:flex}.modal-icon{background:var(--primary-light);border-radius:var(--radius-sm);border:2px solid var(--primary);width:64px;height:64px;box-shadow:var(--shadow);justify-content:center;align-items:center;font-size:48px;line-height:1;display:flex}.modal-header h3{margin:0;font-size:20px}.modal-body{padding:var(--spacing-md) var(--spacing-xl);flex-direction:column;flex:1;align-items:center;display:flex;overflow-y:auto}.modal-body>*{width:100%;max-width:100%}.modal-footer{padding:var(--spacing-md) var(--spacing-xl);border-top:1px solid var(--border);justify-content:flex-end;gap:var(--spacing-sm);flex-shrink:0;display:flex}.btn-close{cursor:pointer;width:36px;height:36px;color:var(--text-secondary);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:24px;transition:background .2s;display:flex}.btn-close:hover{background:#0000000d}.profile-preview{margin-bottom:var(--spacing-md);justify-content:center;display:flex}.profile-preview-icon{border-radius:var(--radius);background:var(--primary-light);border:3px solid var(--primary);width:80px;height:80px;box-shadow:var(--shadow);justify-content:center;align-items:center;font-size:48px;display:flex}.editor-modal{width:100%;padding:0}.editor-modal .tile-bg{border-radius:var(--radius-sm);width:100%;height:150px;margin-bottom:var(--spacing-md);cursor:pointer;border:2px dashed var(--border);transition:border-color var(--transition);background-color:#f1f3f5;background-position:50%;background-repeat:no-repeat;background-size:contain;justify-content:center;align-items:center;font-size:64px;display:flex}.editor-modal .tile-bg:hover{border-color:var(--primary)}.editor-modal input,.editor-modal select{width:100%;margin:var(--spacing-xs) 0;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);border:1px solid var(--border);box-sizing:border-box;font-size:16px}.editor-modal .btn-row{gap:var(--spacing-sm);margin-top:var(--spacing-lg);flex-wrap:wrap;justify-content:flex-end;width:100%;display:flex}.editor-modal .form-row{gap:var(--spacing-sm);width:100%;margin:var(--spacing-xs) 0;align-items:center;display:flex}.editor-modal .form-row label{min-width:60px;color:var(--text-secondary);font-size:14px}.editor-modal .form-row input{flex:1}.forms-block{width:100%;margin-top:var(--spacing-sm);border-top:1px solid var(--border);padding-top:var(--spacing-sm)}.toggle-switch{flex-shrink:0;width:44px;height:24px;display:inline-block;position:relative}.toggle-switch input{opacity:0;width:0;height:0;position:absolute}.slider{cursor:pointer;transition:background var(--transition);background:#ccc;border-radius:24px;position:absolute;inset:0}.slider:before{content:"";width:18px;height:18px;transition:transform var(--transition);background:#fff;border-radius:50%;position:absolute;bottom:3px;left:3px}.toggle-switch input:checked+.slider{background:var(--primary)}.toggle-switch input:checked+.slider:before{transform:translate(20px)}.toast-container{z-index:2000;pointer-events:none;flex-direction:column;align-items:center;gap:8px;display:flex;position:fixed;bottom:80px;left:50%;transform:translate(-50%)}.toast{color:#fff;pointer-events:auto;background:#000c;border-radius:30px;max-width:90%;padding:8px 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var(--primary);font-size:14px;font-family:var(--font);background:var(--surface);color:var(--text);box-sizing:border-box;width:100%;min-height:36px;padding:8px 12px 8px 16px;transition:border-color .2s,box-shadow .2s}select{appearance:auto;background-image:none}select:focus,input:focus,textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #4caf5033}textarea{resize:vertical;min-height:80px}.form-row:has(input[type=range]){align-items:center;gap:var(--spacing-sm);display:flex}.form-row:has(input[type=range]) label{flex-shrink:0;min-width:80px}.form-row:has(input[type=range]) input[type=range]{flex:1;min-width:0}.form-row:has(input[type=range]) span{text-align:right;min-width:32px;color:var(--text-secondary);flex-shrink:0;font-weight:500}input[type=range]{appearance:none;background:var(--border);border:none;border-radius:3px;outline:none;width:100%;height:6px;min-height:auto;padding:0;transition:background 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