:root{--bar-h:56px;--swatch:36px;--radius:14px;--primary:#6366f1;--primary-light:#818cf8;--accent:#f472b6;--shadow:0 4px 14px #0000001f;--font:"Fredoka", system-ui, sans-serif}*{box-sizing:border-box;touch-action:none;margin:0;padding:0}html,body{height:100%;font-family:var(--font);background:#f8fafc;overflow:hidden}#app{flex-direction:column;height:100vh;display:flex}.toolbar{height:var(--bar-h);z-index:10;scrollbar-width:none;background:#fff;border-bottom:1px solid #e2e8f0;align-items:center;gap:6px;padding:8px 12px;display:flex;overflow-x:auto;box-shadow:0 1px #0000000a}.toolbar::-webkit-scrollbar{display:none}.toolbar-group{border-right:1px solid #e2e8f0;align-items:center;gap:4px;padding:0 6px;display:flex}.toolbar-group:last-child{border:none}.toolbar button{cursor:pointer;-webkit-user-select:none;user-select:none;background:#f1f5f9;border:2px solid #0000;border-radius:10px;justify-content:center;align-items:center;width:44px;height:38px;font-size:20px;line-height:1;transition:all .15s;display:flex}.toolbar button:hover{background:#e2e8f0;transform:translateY(-1px)}.toolbar button:active{transform:scale(.95)}.toolbar button.active{border-color:var(--primary);background:#e0e7ff;box-shadow:0 2px 6px #6366f133}.brushes-size button{color:#64748b;font-size:14px;font-weight:700}.brushes-size span{width:0;display:none}.brushes-size .size-sm:before{content:"";background:currentColor;border-radius:50%;width:4px;height:4px;display:block}.brushes-size .size-md:before{content:"";background:currentColor;border-radius:50%;width:8px;height:8px;display:block}.brushes-size .size-lg:before{content:"";background:currentColor;border-radius:50%;width:14px;height:14px;display:block}.actions button{font-size:18px}#save-btn{background:#dcfce7!important;border-color:#86efac!important}.palette{background:#fff;border-bottom:1px solid #e2e8f0;justify-content:center;padding:8px 12px;display:flex}.swatch-group{flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;display:flex}.swatch{width:var(--swatch);height:var(--swatch);cursor:pointer;border:3px solid #0000;border-radius:50%;flex-shrink:0;padding:0;transition:border-color .15s,transform .1s;position:relative;overflow:hidden;box-shadow:0 2px 4px #00000014}.swatch:hover{transform:scale(1.12)}.swatch.active{border-color:#1e293b}.color-picker-wrp{background:#fff;justify-content:center;align-items:center;font-size:18px;display:flex}.color-picker-wrp input[type=color]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.sticker-tray{top:var(--bar-h);z-index:8;border-radius:var(--radius);box-shadow:var(--shadow);opacity:0;pointer-events:none;background:#fff;flex-direction:column;gap:6px;padding:8px;transition:opacity .2s,transform .2s;display:flex;position:absolute;right:8px;transform:translate(20px)}.sticker-tray.visible{opacity:1;pointer-events:auto;transform:translate(0)}.sticker-btn{cursor:pointer;background:0 0;border:none;padding:4px;font-size:24px}.sticker-btn:hover{transform:scale(1.2)}.canvas-wrap{background:#e2e8f0;flex:1;justify-content:center;align-items:center;min-height:300px;display:flex;position:relative;overflow:hidden}#draw-canvas{border-radius:var(--radius);cursor:crosshair;background:#fff;display:block;position:absolute;top:8px;left:8px;box-shadow:0 8px 32px #0000001f}.bg-selector{box-shadow:var(--shadow);z-index:8;background:#fff;border-radius:20px;gap:6px;padding:6px;display:flex;position:absolute;bottom:12px;left:50%;transform:translate(-50%)}.bg-option{cursor:pointer;color:#475569;background:#f1f5f9;border:2px solid #0000;border-radius:16px;padding:6px 12px;font-size:12px;font-weight:600}.bg-option:hover{background:#e2e8f0}.bg-option.active{border-color:var(--primary);color:var(--primary)}@media (width<=600px){:root{--bar-h:48px;--swatch:30px}.toolbar button{width:38px;height:34px;font-size:18px}.palette{padding:6px 8px}.swatch{width:30px;height:30px}.bg-option{padding:4px 8px;font-size:11px}#draw-canvas{border-radius:8px}}.mode-bar{background:#f1f5f9;border-bottom:1px solid #e2e8f0;align-items:center;gap:6px;padding:6px 12px;display:flex}.mode-btn{font-family:var(--font);color:#64748b;cursor:pointer;background:#fff;border:2px solid #0000;border-radius:20px;padding:6px 14px;font-size:13px;font-weight:600;transition:all .15s}.mode-btn:hover{background:#e2e8f0}.mode-btn.active{border-color:var(--primary);color:var(--primary);background:#e0e7ff}#sound-toggle{margin-left:auto;padding:6px 10px;font-size:16px}.lesson-bar{color:#475569;background:#fff;border-bottom:1px solid #e2e8f0;align-items:center;gap:8px;padding:8px 16px;font-size:14px;display:flex}.lesson-bar.hidden{display:none!important}.lesson-bar span{color:#1e293b;white-space:nowrap;font-weight:600}.lesson-buttons{scrollbar-width:none;gap:6px;display:flex;overflow-x:auto}.lesson-btn{font-family:var(--font);color:#475569;cursor:pointer;white-space:nowrap;background:#fff;border:2px solid #cbd5e1;border-radius:18px;padding:5px 14px;font-size:12px;font-weight:600}.lesson-btn:hover{border-color:var(--primary);color:var(--primary)}.lesson-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.lesson-buttons::-webkit-scrollbar{display:none}.playback-overlay{pointer-events:none;z-index:6;background:#0000000a;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.playback-overlay.hidden{display:none!important}.pb-controls{border-radius:var(--radius);box-shadow:var(--shadow);pointer-events:auto;background:#fff;align-items:center;gap:12px;padding:12px 20px;display:flex}.pb-controls button{font-family:var(--font);border:2px solid var(--primary);background:var(--primary);color:#fff;cursor:pointer;border-radius:10px;padding:8px 16px;font-size:14px;font-weight:600}.pb-controls button:last-child{color:var(--primary);background:#fff}#pb-status{color:#64748b;min-width:80px;font-size:12px}.hidden{display:none!important}.gallery-panel{background:#fff;border-radius:16px 16px 0 0;margin-top:8px;padding:12px 16px 16px;box-shadow:0 -4px 20px #00000014}.gallery-tabs{scrollbar-width:none;gap:8px;padding-bottom:8px;display:flex;overflow-x:auto}.gallery-tabs::-webkit-scrollbar{display:none}.gallery-tab{font-family:var(--font);color:#64748b;cursor:pointer;white-space:nowrap;background:#f8fafc;border:2px solid #e2e8f0;border-radius:20px;flex-shrink:0;padding:6px 14px;font-size:13px;font-weight:600}.gallery-tab.active{border-color:var(--primary);color:var(--primary);background:#e0e7ff}.gallery-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px;max-height:220px;padding:4px;display:grid;overflow-y:auto}.gallery-thumb{aspect-ratio:1;cursor:pointer;background:#f8fafc;border:2px solid #e2e8f0;border-radius:10px;transition:transform .15s,border-color .15s;position:relative;overflow:hidden}.gallery-thumb:hover{border-color:var(--primary);transform:scale(1.05)}.gallery-thumb img{object-fit:cover;width:100%;height:100%;display:block}.gallery-thumb .thumb-label{color:#fff;text-align:center;white-space:nowrap;background:#0000008c;padding:3px 6px;font-size:10px;font-weight:600;position:absolute;bottom:0;left:0;right:0;overflow:hidden}.gallery-hint{text-align:center;font-family:var(--font);color:#94a3b8;margin-top:8px;font-size:12px}