.tools-layout{display:grid;grid-template-columns:210px 1fr;height:calc(100vh - 52px - 34px);overflow:hidden}.tools-nav{background:var(--sidebar-bg);border-right:1px solid var(--border);padding:12px 8px;overflow-y:auto}.tools-nav-title{font-size:10px;color:var(--text3);text-transform:uppercase;letter-spacing:.08em;padding:0 7px;margin-bottom:8px}.tool-nav-item{display:flex;align-items:center;gap:9px;padding:7px 9px;border-radius:7px;cursor:pointer;font-size:12.5px;color:var(--text2);transition:all .12s;border:1px solid transparent}.tool-nav-item:hover{background:var(--bg3);color:var(--text)}.tool-nav-item.active{background:color-mix(in srgb,var(--accent) 10%,transparent);color:var(--accent);border-color:color-mix(in srgb,var(--accent) 20%,transparent)}.tool-icon{width:24px;height:24px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.tools-body{overflow-y:auto;padding:24px 28px 40px}.tool-panel{display:none}.tool-panel.active{display:block}.tool-title{font-size:16px;font-weight:500;margin-bottom:4px}.tool-desc{font-size:12px;color:var(--text3);margin-bottom:20px}.tool-card{background:var(--card-bg);border:1px solid var(--border);border-radius:11px;padding:18px 20px;margin-bottom:14px}.tool-label{font-size:12px;color:var(--text2);margin-bottom:6px;display:block}.tool-textarea{width:100%;background:var(--bg3);border:1px solid var(--border-h);border-radius:8px;padding:10px 12px;font-size:13px;font-family:'JetBrains Mono',monospace;color:var(--text);outline:0;resize:vertical;line-height:1.6;transition:border-color .12s;min-height:100px}.tool-textarea:focus{border-color:var(--accent)}.tool-textarea::placeholder{color:var(--text3)}.tool-row{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;flex-wrap:wrap}.tool-input{height:36px;background:var(--bg3);border:1px solid var(--border-h);border-radius:7px;padding:0 12px;font-size:13px;font-family:inherit;color:var(--text);outline:0;transition:border-color .12s}.tool-input:focus{border-color:var(--accent)}.tool-select{height:36px;background:var(--bg3);border:1px solid var(--border-h);border-radius:7px;padding:0 10px;font-size:12.5px;font-family:inherit;color:var(--text);outline:0;cursor:pointer}.result-box{background:var(--bg3);border:1px solid var(--border-h);border-radius:8px;padding:10px 12px;font-size:13px;font-family:'JetBrains Mono',monospace;color:var(--text2);line-height:1.6;min-height:40px;word-break:break-all;white-space:pre-wrap}.tool-btn-row{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.qr-layout{display:grid;grid-template-columns:1fr 1.5fr .8fr;gap:16px;align-items:start}.qr-col{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}.qr-col-head{padding:13px 16px;font-size:14px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border);background:var(--bg3);display:flex;align-items:center;gap:8px}.qr-col-body{padding:16px;display:flex;flex-direction:column}.qr-quick{display:flex;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}.qr-quick-label{font-size:12px;color:var(--text3)}.qr-quick-btn{font-size:12px;padding:5px 14px;border-radius:7px;background:var(--bg3);border:1px solid var(--border-h);color:var(--text2);cursor:pointer;transition:all .12s}.qr-quick-btn:hover{border-color:var(--accent);color:var(--accent)}.qr-logo-row{display:flex;align-items:center;gap:14px;margin-top:8px}.qr-logo-drop{width:72px;height:72px;border-radius:10px;border:2px dashed var(--border-h);display:flex;align-items:center;justify-content:center;color:var(--text3);font-size:26px;cursor:pointer;overflow:hidden;flex-shrink:0;transition:border-color .12s}.qr-logo-drop:hover{border-color:var(--accent)}.qr-logo-drop img{width:100%;height:100%;object-fit:contain}.qr-color-row{display:flex;align-items:center;gap:10px;margin-top:8px}.qr-color-label{font-size:12.5px;color:var(--text2);width:32px}.qr-color-swatch{width:38px;height:32px;border:1px solid var(--border-h);border-radius:7px;padding:0;cursor:pointer;background:none}.qr-color-hex{flex:1;height:32px;background:var(--bg3);border:1px solid var(--border-h);border-radius:7px;padding:0 12px;font-size:12.5px;font-family:'JetBrains Mono',monospace;color:var(--text);outline:0}.qr-color-hex:focus{border-color:var(--accent)}.qr-presets{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}.qr-preset{width:34px;height:34px;border-radius:50%;cursor:pointer;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;transition:transform .12s,border-color .12s}.qr-preset:hover{transform:scale(1.08)}.qr-preset.active{border-color:var(--accent)}.qr-preset svg{width:16px;height:16px}.qr-size-row{display:flex;gap:8px;margin-top:8px}.qr-size-btn{flex:1;height:38px;border-radius:8px;background:var(--bg3);border:1px solid var(--border-h);color:var(--text2);font-size:13px;cursor:pointer;transition:all .12s;font-family:'JetBrains Mono',monospace}.qr-size-btn:hover{border-color:var(--accent)}.qr-size-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.qr-gen-badge{font-size:11px;padding:3px 10px;border-radius:12px;background:rgba(46,160,67,.12);color:#2ea043;font-weight:500;margin-left:auto}.qr-canvas-wrap{width:100%;min-height:240px;display:flex;align-items:center;justify-content:center;background:var(--bg3);border-radius:12px;padding:20px}.qr-canvas-wrap canvas,.qr-canvas-wrap img{max-width:100%;border-radius:8px;display:block}.qr-empty{color:var(--text3);font-size:13px}.qr-gen-btn{width:100%}.qr-dl-row{display:flex;gap:10px}.qr-dl-row .btn{flex:1}.qr-history .qr-col-body{gap:8px;max-height:520px;overflow-y:auto}.qr-history-empty{color:var(--text3);font-size:13px;text-align:center;padding:40px 0}.qr-hist-item{display:flex;align-items:center;gap:10px;padding:8px;border:1px solid var(--border);border-radius:9px;cursor:pointer;transition:border-color .12s}.qr-hist-item:hover{border-color:var(--accent)}.qr-hist-thumb{width:40px;height:40px;border-radius:6px;flex-shrink:0;background:#fff;padding:2px}.qr-hist-text{flex:1;font-size:12px;color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.qr-hist-del{color:var(--text3);cursor:pointer;font-size:14px;padding:2px 6px}.qr-hist-del:hover{color:var(--danger)}.qr-btn-sm{height:32px;padding:0 14px;font-size:12.5px}.qr-tip{font-size:11.5px;color:var(--text3);margin-top:14px}@media(max-width:1100px){.qr-layout{grid-template-columns:1fr}}#drawCanvas{border-radius:8px;cursor:crosshair;touch-action:none}.draw-toolbar{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}.color-swatch{width:22px;height:22px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:transform .12s}.color-swatch:hover{transform:scale(1.15)}.color-swatch.active{border-color:var(--text)}.size-btn{width:22px;height:22px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;background:var(--bg3);border:1px solid var(--border-h);transition:all .12s;font-size:9px;color:var(--text2)}.size-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.calc-display{background:var(--bg3);border:1px solid var(--border-h);border-radius:8px;padding:12px 16px;text-align:right;margin-bottom:10px}.calc-expr{font-size:12px;color:var(--text3);font-family:'JetBrains Mono',monospace;min-height:18px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.calc-result{font-size:28px;font-family:'JetBrains Mono',monospace;color:var(--text);margin-top:4px}.calc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.calc-btn{height:46px;border-radius:8px;font-size:15px;font-family:'JetBrains Mono',monospace;font-weight:500;cursor:pointer;border:0;transition:all .12s;background:var(--bg3);color:var(--text)}.calc-btn:hover{background:var(--bg4)}.calc-btn:active{transform:scale(.96)}.calc-btn.op{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}.calc-btn.eq{background:var(--accent);color:#fff}.calc-btn.eq:hover{opacity:.88}.calc-btn.fn{background:var(--bg4);color:var(--text2);font-size:12px}.calc-btn.wide{grid-column:span 2}.word-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}.ws-card{background:var(--bg3);border-radius:8px;padding:10px 12px;text-align:center}.ws-val{font-size:22px;font-family:'JetBrains Mono',monospace;font-weight:500;color:var(--text)}.ws-label{font-size:10px;color:var(--text3);margin-top:2px}