*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden;font-family:"Microsoft YaHei",Arial,sans-serif;color:#111827}#app{display:flex;background:#f3f4f6}.left-panel{width:86px;background:#111827;color:#fff;display:flex;flex-direction:column;align-items:center;padding:12px 8px;gap:8px;box-shadow:2px 0 16px #0002;z-index:3}.brand{font-weight:800;font-size:13px;margin:4px 0 10px;color:#93c5fd;white-space:nowrap;letter-spacing:-.5px}.tool{width:66px;height:48px;border:1px solid #374151;border-radius:12px;background:#1f2937;color:#e5e7eb;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:18px;transition:.15s}.tool span{font-size:11px;margin-top:2px}.tool:hover{background:#374151;transform:translateY(-1px)}.tool.active{background:#2563eb;border-color:#60a5fa;color:#fff}.workspace{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{min-height:54px;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;align-items:center;gap:8px;padding:7px 10px;box-shadow:0 2px 12px #00000010;z-index:2;position:relative}.toolbar-groups{width:100%;display:flex;align-items:center;gap:8px;min-width:0}.group{display:flex;align-items:center;gap:6px;min-width:0}.group.right{margin-left:auto}button{border:1px solid #d1d5db;background:#fff;border-radius:9px;padding:8px 11px;cursor:pointer;color:#111827;display:inline-flex;align-items:center;justify-content:center;gap:4px}.top-icon,.toolbar-toggle{width:34px;height:34px;padding:0;font-size:16px;line-height:1;font-weight:700}.top-icon.danger{color:#dc2626}.toolbar-toggle{display:none;flex:0 0 auto}.icon-label{height:34px;padding:0 5px;border:1px solid #e5e7eb;border-radius:9px;background:#fff;color:#374151}.icon-label>span{font-size:13px;font-weight:700}.style-group{flex:0 1 auto}.zoom-group{flex:0 0 auto}.btn-text{font-size:12px}button:hover{background:#f3f4f6;border-color:#9ca3af}label{display:flex;gap:5px;align-items:center;font-size:13px;color:#4b5563}input[type=color]{width:28px;height:28px;border:0;background:transparent;cursor:pointer}select{height:30px;border:1px solid #d1d5db;border-radius:8px;background:#fff;color:#374151;padding:0 6px;cursor:pointer}input[type=range]{width:76px;accent-color:#2563eb}#zoomText{min-width:44px;text-align:center;color:#4b5563;font-size:12px}#canvasWrap{position:relative;flex:1;overflow:hidden;background-color:#f8fafc;background-image:radial-gradient(#cbd5e1 1px,transparent 1px);background-size:24px 24px}#board{display:block;width:100%;height:100%;cursor:crosshair;touch-action:none}.hint{position:absolute;right:14px;bottom:12px;background:#ffffffd9;border:1px solid #e5e7eb;border-radius:999px;padding:7px 12px;color:#6b7280;font-size:12px;pointer-events:none;box-shadow:0 4px 16px #0001}@media(max-width:1100px){.topbar{align-items:flex-start}.toolbar-toggle{display:inline-flex}.toolbar-groups{display:none;position:absolute;left:10px;right:10px;top:48px;padding:8px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 10px 30px #0002;flex-wrap:wrap;z-index:10}.topbar.expanded .toolbar-groups{display:flex}.group.right{margin-left:0}.hint{display:none}}@media(max-width:720px){.left-panel{width:58px;padding:8px 5px;gap:6px}.brand{font-size:9px;transform:scale(.9);transform-origin:center}.tool{width:46px;height:42px;font-size:17px}.tool span{display:none}.top-icon,.toolbar-toggle{width:32px;height:32px}.width-label input[type=range]{width:58px}.toolbar-groups{max-height:68vh;overflow:auto}}
 .icon-btn{width:30px;height:30px;padding:0;border-radius:8px}.fill-icon-btn{position:relative}.fill-icon-btn.active{background:#eff6ff;border-color:#2563eb}.no-fill-icon{width:18px;height:18px;border:2px solid #2563eb;border-radius:4px;background:linear-gradient(135deg,transparent 42%,#ef4444 43%,#ef4444 57%,transparent 58%);display:inline-block}.fill-icon-btn.active .no-fill-icon{border-color:#ef4444}

@media(min-width:1101px){.toolbar-groups{display:flex!important}.topbar{overflow:hidden}.group{flex-shrink:0}.style-group{flex-shrink:1}.group.right{margin-left:auto}}
@media(max-width:1280px) and (min-width:1101px){.top-icon{width:31px;height:31px;font-size:14px}.group{gap:4px}input[type=range]{width:62px}.icon-label{padding:0 3px}}

.folder-tree-btn{margin-top:auto;background:#0f766e;border-color:#14b8a6}.folder-tree-btn:hover{background:#115e59}.file-tree-panel{position:absolute;left:14px;bottom:14px;width:min(360px,calc(100% - 28px));max-height:min(560px,calc(100% - 28px));background:#fff;border:1px solid #d1d5db;border-radius:14px;box-shadow:0 18px 45px #0003;z-index:6;display:flex;flex-direction:column;overflow:hidden}.file-tree-panel[hidden]{display:none}.file-tree-head{height:42px;padding:0 10px 0 14px;display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border-bottom:1px solid #e5e7eb}.file-tree-head strong{font-size:14px;color:#111827}.file-tree-head button{width:28px;height:28px;padding:0;border-radius:8px;font-size:18px}.file-tree-actions{display:flex;gap:6px;flex-wrap:wrap;padding:10px;border-bottom:1px solid #eef2f7}.file-tree-actions button{height:30px;padding:0 9px;font-size:12px;border-radius:8px}.file-tree-tip{padding:0 10px 8px;color:#6b7280;font-size:12px;line-height:1.4}.file-tree-content{padding:6px 8px 12px;overflow:auto;min-height:120px}.tree-row{height:30px;display:flex;align-items:center;gap:6px;border-radius:8px;padding:0 8px;cursor:pointer;color:#374151;font-size:13px;user-select:none}.tree-row:hover{background:#f3f4f6}.tree-row.active{background:#dbeafe;color:#1d4ed8}.tree-row.file{cursor:default;color:#4b5563}.tree-row .tree-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-empty{padding:16px 8px;color:#9ca3af;text-align:center;font-size:13px}.tree-indent{display:inline-block;flex:0 0 auto}
@media(max-width:720px){.folder-tree-btn{margin-top:6px}.file-tree-panel{left:8px;bottom:8px;width:calc(100% - 16px);max-height:70vh}.file-tree-actions button{flex:1}}
.tree-toggle{width:14px;display:inline-flex;justify-content:center;color:#6b7280;font-size:11px}.tree-icon{width:18px;display:inline-flex;justify-content:center}

.file-tree-icon-btn{width:38px;height:32px;padding:0;font-size:16px;font-weight:700}.file-tree-actions{align-items:center}.file-tree-actions button.file-tree-icon-btn{flex:0 0 38px}.file-tree-head strong{font-size:18px;line-height:1}.file-tree-tip{min-height:24px}
@media(max-width:720px){.file-tree-actions button.file-tree-icon-btn{flex:0 0 36px;width:36px}.file-tree-icon-btn{height:32px}}
.selected-folder-panel{border-top:1px solid #e5e7eb;background:#fafafa;padding:8px 10px 10px;max-height:170px;overflow:auto}.selected-folder-title{font-size:12px;font-weight:700;color:#1f2937;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-folder-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:6px}.selected-folder-item{min-width:0;height:58px;padding:5px;border:1px solid #e5e7eb;border-radius:10px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:#374151}.selected-folder-item:hover{background:#eff6ff;border-color:#93c5fd}.selected-folder-item span{font-size:20px;line-height:1}.selected-folder-item em{max-width:100%;font-style:normal;font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-folder-empty{font-size:12px;color:#9ca3af;text-align:center;padding:10px 0}
@media(max-width:720px){.selected-folder-panel{max-height:150px}.selected-folder-list{grid-template-columns:repeat(auto-fill,minmax(64px,1fr))}}
.auth-panel{position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:50;display:flex;align-items:center;justify-content:center;padding:18px}.auth-panel[hidden]{display:none}.auth-card{width:min(380px,100%);background:#fff;border-radius:16px;box-shadow:0 24px 70px #0005;padding:22px}.auth-card h2{margin:0 0 8px;font-size:22px;color:#111827}.auth-card p{margin:0 0 14px;color:#6b7280;font-size:13px;line-height:1.5}.auth-card code{background:#f3f4f6;border-radius:5px;padding:1px 4px}.auth-card label{display:block;margin:10px 0;color:#374151;font-size:13px}.auth-card input{width:100%;height:38px;margin-top:5px;border:1px solid #d1d5db;border-radius:9px;padding:0 10px;font-size:14px}.auth-actions{display:flex;gap:8px;margin-top:14px}.auth-actions button{flex:1;height:38px}.auth-actions button:first-child{background:#2563eb;border-color:#2563eb;color:#fff}.auth-msg{min-height:20px;margin-top:10px;color:#dc2626;font-size:13px}.user-bar{position:absolute;right:12px;top:62px;z-index:5;background:#ffffffdd;border:1px solid #e5e7eb;border-radius:999px;padding:5px 8px;display:flex;gap:8px;align-items:center;font-size:12px;color:#374151;box-shadow:0 4px 14px #0001}.user-bar button{height:24px;padding:0 8px;border-radius:999px;font-size:12px}.sync-btn{background:#ecfeff;border-color:#67e8f9}

.admin-card{width:min(620px,100%)}.auth-actions button:nth-child(3){background:#f8fafc;border-color:#cbd5e1;color:#334155}.admin-tools{display:flex;gap:8px;margin:10px 0}.admin-tools button:first-child{background:#2563eb;border-color:#2563eb;color:#fff}.admin-user-list{max-height:360px;overflow:auto;border:1px solid #e5e7eb;border-radius:12px;background:#fafafa;padding:8px}.admin-user-row{display:grid;grid-template-columns:minmax(120px,1fr) minmax(130px,180px) auto;gap:8px;align-items:center;padding:8px;border:1px solid #e5e7eb;border-radius:10px;background:#fff;margin-bottom:8px}.admin-user-row:last-child{margin-bottom:0}.admin-user-info{min-width:0;display:flex;flex-direction:column;gap:3px}.admin-user-info strong{font-size:14px;color:#111827;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.admin-user-info span{font-size:11px;color:#6b7280;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.admin-user-row input{height:34px;border:1px solid #d1d5db;border-radius:8px;padding:0 9px}.admin-user-row button{height:34px;padding:0 10px;background:#ecfeff;border-color:#67e8f9}
@media(max-width:720px){.admin-user-row{grid-template-columns:1fr}.admin-tools button{flex:1}}

.mobile-tool-toggle,.mobile-quick-tools{display:none}
@media(max-width:720px){
  .mobile-tool-toggle{display:flex;align-items:center;justify-content:center;position:fixed;left:10px;bottom:10px;z-index:30;width:46px;height:46px;border-radius:999px;background:#2563eb;border-color:#60a5fa;color:#fff;box-shadow:0 10px 30px #0004;font-size:20px}  .mobile-quick-tools{display:flex;position:fixed;right:10px;bottom:10px;z-index:30;gap:8px}
  .mobile-quick-tool.tool{width:48px;height:48px;border-radius:999px;background:#2563eb;border-color:#60a5fa;color:#fff;box-shadow:0 10px 30px #0004;font-size:18px;padding:0}
  .mobile-quick-tool.tool span{display:block;font-size:10px;margin-top:1px}
  .mobile-quick-tool.tool.active{background:#f97316;border-color:#fdba74;color:#fff}
  .left-panel{position:fixed;left:0;top:0;bottom:0;height:100%;transform:translateX(-72px);transition:transform .18s ease;z-index:29;overflow-y:auto;overflow-x:hidden}
  body.mobile-tools-open .left-panel{transform:translateX(0)}
  body.mobile-tools-open .mobile-tool-toggle{left:66px;background:#111827}
  .workspace{width:100%;margin-left:0}
  .user-bar{top:8px;right:8px;padding:4px 5px;gap:4px;background:#ffffffb8}
  .user-bar span{display:none}
  .user-bar button{width:30px;height:28px;padding:0;font-size:0}
  .user-bar .sync-btn::before{content:"↻";font-size:14px}
  .user-bar button:not(.sync-btn)::before{content:"⎋";font-size:14px}
  .topbar{min-height:44px;padding:6px 58px 6px 8px}
  #canvasWrap{touch-action:none}
}