:root{--bg: #0f1115;--panel: #171a21;--panel-2: #1f232c;--border: #2a2f3a;--text: #e6e9ef;--muted: #9aa3b2;--accent: #4f8cff;--accent-2: #2dd4bf;--danger: #e11d48}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}.app{display:grid;grid-template-rows:auto 1fr;height:100vh}.workspace{display:grid;grid-template-columns:220px 1fr 300px;min-height:0}.workspace>*{min-height:0}.toolbar{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--panel);border-bottom:1px solid var(--border);flex-wrap:wrap}.toolbar .brand{font-weight:700;letter-spacing:.3px;margin-right:8px}.toolbar .brand small{color:var(--muted);font-weight:400;margin-left:6px}.toolbar .spacer{flex:1}.toolbar .group{display:flex;align-items:center;gap:6px;padding:0 8px;border-left:1px solid var(--border)}.toolbar .group:first-of-type{border-left:none}.toolbar label{color:var(--muted);font-size:12px}.zoom-group{gap:4px}.zoom-btn.active{border-color:var(--accent);color:var(--accent);background:#4f8cff1f}.zoom-btn{padding:4px 8px;font-size:12px;min-width:42px}.zoom-pct{font-size:12px;color:var(--muted);min-width:42px;text-align:center}.zoom-group input[type=range]{width:88px}.panel{background:var(--panel);border-right:1px solid var(--border);overflow-y:auto;padding:12px}.panel.right{border-right:none;border-left:none}.right-column{display:flex;flex-direction:column;min-height:0;border-left:1px solid var(--border)}.right-column>.panel.right{flex:1;min-height:0;overflow-y:auto}.tools-box{background:var(--panel);border-bottom:1px solid var(--border);padding:12px;flex:none}.tools-box h3{margin:4px 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}.tools-section-label{margin:0 0 6px;font-size:11px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;color:var(--muted)}.tools-section-label+.tools-grid{margin-bottom:10px}.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.tool-btn{display:flex;align-items:center;justify-content:center;padding:8px;min-height:42px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;color:var(--text)}.tool-btn svg{width:22px;height:22px;flex:none}.tool-btn:hover{border-color:var(--accent);color:var(--text)}.tool-btn.active{border-color:var(--accent);background:#4f8cff1f;color:var(--accent)}.tool-btn.tool-delete:hover{border-color:var(--danger);color:var(--danger)}.canvas-wrap.draw-mode{cursor:crosshair}.canvas-wrap.transform-mode{cursor:default}.canvas-wrap.wireframe-mode .board-surface{fill:#ececea}.canvas-wrap.wireframe-mode .wireframe-geom :is(path,rect,circle,ellipse,line,polyline,polygon){fill:none!important;stroke:#22d3ee!important;stroke-width:.3;vector-effect:non-scaling-stroke}.canvas-wrap.wireframe-mode .obj-hit path{fill:none!important;stroke:#22d3ee!important;stroke-width:.3;vector-effect:non-scaling-stroke}.canvas-wrap.wireframe-mode .wireframe-raster{fill:none;stroke:#22d3ee;stroke-width:.3;vector-effect:non-scaling-stroke}.draw-preview{pointer-events:none}.scale-panel{background:var(--panel);border-bottom:1px solid var(--border);padding:12px;flex:none}.scale-panel h3{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}.scale-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.scale-done{padding:2px 8px;font-size:14px;line-height:1}.scale-row{display:flex;gap:8px}.scale-row input{flex:1}.scale-hint{margin:10px 0 0}.scale-handle{fill:#fff;stroke:var(--accent);stroke-width:1.5;vector-effect:non-scaling-stroke;pointer-events:all}.handle-nw,.handle-se{cursor:nwse-resize}.handle-ne,.handle-sw{cursor:nesw-resize}.aspect-lock-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:4px}.aspect-lock-row label{margin:0}.aspect-lock-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:4px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px}.aspect-lock-btn svg{width:18px;height:18px}.aspect-lock-btn.active{border-color:var(--accent);color:var(--accent);background:#4f8cff1f}.transform-box{fill:#4f8cff0d;stroke:var(--accent);stroke-width:.2;vector-effect:non-scaling-stroke;cursor:move;pointer-events:all}.rotate-stem{stroke:var(--accent-2);stroke-width:.15;vector-effect:non-scaling-stroke;pointer-events:none}.rotate-handle{fill:#fff;stroke:var(--accent-2);stroke-width:1.5;vector-effect:non-scaling-stroke;cursor:grab;pointer-events:all}.rotate-handle:active{cursor:grabbing}.panel h3{margin:4px 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}.layer{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;margin-bottom:6px;cursor:pointer;background:var(--panel-2)}.layer.selected{outline:2px solid var(--accent)}.layer .dot{width:10px;height:10px;border-radius:50%;flex:none}.layer .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layer .mode{font-size:11px;color:var(--muted)}.layer .grp-badge{font-size:10px;line-height:1;color:#fff;flex:none;padding:2px 5px;border-radius:6px;letter-spacing:.5px;text-transform:uppercase}.group-actions{display:flex;gap:8px;margin:6px 0 10px}.group-actions .ghost-btn{flex:1;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:6px 8px;font-size:13px}.tree{display:flex;flex-direction:column;gap:6px}.group-node{border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--panel-2)}.group-node .layer{border:none;border-radius:0;background:transparent}.group-head{font-weight:600}.group-children{display:flex;flex-direction:column;gap:4px;padding:4px 6px 6px;border-top:1px solid var(--border)}.group-children .layer.child{background:var(--panel)}.layer .twist{flex:none;width:18px;padding:0;font-size:11px;line-height:1;color:var(--muted)}.grp-name-input{flex:1;min-width:0;font:inherit;padding:2px 6px;border:1px solid var(--accent);border-radius:6px;background:var(--panel);color:inherit}.canvas-wrap{position:relative;height:100%;min-height:0;overflow:auto;background-color:#1a1d24;display:flex;align-items:center;justify-content:center;padding:40px}.board{background:transparent;box-shadow:none;flex:none}.canvas-backdrop{fill:#2a2e38}.board-surface{fill:#f7f7f5;stroke:#c8c8c4;stroke-width:.15;vector-effect:non-scaling-stroke;filter:drop-shadow(0 4px 20px rgba(0,0,0,.35))}.obj-hit{cursor:move}.selbox{fill:none;stroke:var(--accent);stroke-dasharray:4 3;vector-effect:non-scaling-stroke}.field{margin-bottom:12px}.field>label{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.row{display:flex;gap:8px}.row>.field{flex:1}input[type=text],input[type=number],textarea,select{width:100%;background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font:inherit}textarea{resize:vertical;min-height:64px}input[type=color]{width:100%;height:34px;padding:2px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px}button{background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 12px;cursor:pointer;font:inherit}button:hover{border-color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{color:var(--danger)}button.ghost{background:transparent}button:disabled{opacity:.5;cursor:not-allowed}.btn-row{display:flex;gap:8px;flex-wrap:wrap}.seg{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}.seg button{border:none;border-radius:0;border-right:1px solid var(--border)}.seg button:last-child{border-right:none}.seg button.active{background:var(--accent);color:#fff}.hint{color:var(--muted);font-size:12px;line-height:1.5}.empty{color:var(--muted);font-size:13px;padding:12px 0}.file-input{display:none}.upload-label{display:inline-block;background:var(--panel-2);border:1px dashed var(--border);border-radius:8px;padding:8px 12px;cursor:pointer}.upload-label:hover{border-color:var(--accent)}.status-btn{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:#fff;border:none;padding:6px 12px;border-radius:999px}.status-btn .status-dot{width:8px;height:8px;border-radius:50%;background:#ffffffe6}.status-btn.online{background:#16a34a}.status-btn.online:hover{background:#15803d;border-color:transparent}.status-btn.offline{background:#dc2626}.status-btn.offline:hover{background:#b91c1c;border-color:transparent}.account-btn{display:inline-flex;align-items:center;justify-content:center;padding:3px;border-radius:999px}.avatar-sm{width:28px;height:28px;border-radius:50%;object-fit:cover;display:block}.project-title{font-weight:600;color:var(--text, #e7e7ea);max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 4px}.project-title .dirty-dot{color:var(--accent, #f0a020)}.menu-wrap,.account-wrap{position:relative}.dropdown-menu,.account-menu{position:absolute;top:calc(100% + 6px);min-width:180px;background:var(--panel);border:1px solid var(--border);border-radius:10px;box-shadow:0 10px 30px #00000059;padding:6px;z-index:50;display:flex;flex-direction:column;gap:2px}.dropdown-menu{left:0}.account-menu{right:0}.dropdown-menu button{text-align:left;width:100%;background:transparent;border:none;padding:8px 10px;border-radius:6px}.dropdown-menu button:hover{background:var(--panel-2)}.dropdown-menu button:disabled{opacity:.4;cursor:not-allowed;background:transparent}.share-link-row{display:flex;gap:8px;align-items:stretch}.share-link-row input{flex:1;min-width:0}.share-link-row button{white-space:nowrap}.dropdown-menu .menu-file{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:6px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:400;color:var(--text)}.dropdown-menu .menu-file:hover{background:var(--panel-2)}.dropdown-menu .menu-file .file-input{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}.account-menu-head{font-size:11px;color:var(--muted);padding:6px 10px 8px;border-bottom:1px solid var(--border);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-menu button{text-align:left;width:100%;background:transparent;border:none;padding:8px 10px;border-radius:6px}.account-menu button:hover{background:var(--panel-2)}.account-menu button.danger{color:var(--danger)}.account-menu-sep{height:1px;background:var(--border);margin:4px 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:50}.modal{width:min(440px,calc(100vw - 32px));max-height:calc(100vh - 64px);overflow-y:auto;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:0 20px 60px #00000080}.modal h2{margin:0 0 6px}.modal a{color:var(--accent)}.banner{padding:8px 10px;border-radius:8px;font-size:13px;margin:8px 0}.banner.error{background:#e11d4826;color:#fda4af}.banner.ok{background:#2dd4bf26;color:#99f6e4}.profile-head{display:flex;align-items:center;gap:14px;margin:8px 0 14px}.avatar{width:72px;height:72px;border-radius:50%;object-fit:cover;border:1px solid var(--border);background:var(--panel-2);flex:none}.profile-head-actions{display:flex;flex-direction:column;gap:8px}.req{color:var(--danger)}.qr-box{display:flex;justify-content:center;margin:10px 0;padding:12px;background:#fff;border:1px solid var(--border);border-radius:10px}.qr-box img{display:block;image-rendering:pixelated}.manual-key{margin:4px 0 10px}.manual-key summary{cursor:pointer;color:var(--muted);font-size:13px}.recovery-box{margin-top:10px}.recovery-box .codes{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin:8px 0}.recovery-box code{background:var(--panel-2);border:1px solid var(--border);border-radius:6px;padding:8px;text-align:center;letter-spacing:2px;font-size:15px}.modal.wide{width:min(820px,calc(100vw - 32px))}.user-table{margin-top:8px}.user-row{display:grid;grid-template-columns:1.1fr 1.5fr .7fr .6fr .9fr 1.5fr;gap:8px;align-items:center;padding:6px 0;border-bottom:1px solid var(--border)}.user-row.head{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px}.user-row.head span{padding:0 2px}.user-row .chk{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:12px}.row-actions{display:flex;gap:6px;flex-wrap:wrap}.row-actions button{padding:6px 8px;font-size:12px}.status-badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;white-space:nowrap}.status-badge.active{background:#22c55e26;color:#16a34a}.status-badge.locked{background:#f59e0b2e;color:#b45309}.status-badge.suspended{background:#ef44442e;color:#dc2626}.file-list{margin-top:8px;max-height:50vh;overflow:auto}.file-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--border)}.file-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-date{color:var(--muted);font-size:12px}.user-files{grid-column:1 / -1;background:var(--panel-2);border-radius:8px;padding:6px 10px;margin-top:4px}.user-files .file-row{padding:6px 0}.user-files .file-row:last-child{border-bottom:none}.modal-backdrop.landing{background:#080a0ed9}.landing-card{width:min(460px,calc(100vw - 32px));text-align:center}.landing-title{margin:4px 0 6px;font-size:30px;letter-spacing:.5px}.landing-sub{color:var(--muted);margin:0 0 18px}.landing-actions{display:flex;flex-direction:column;gap:10px}.landing-actions .big{padding:12px 14px;font-size:15px}