:root{--bg: #0f1014;--surface: #161821;--surface-2: #1d2030;--surface-3: #252836;--border: #2a2e3f;--border-strong: #3a3f55;--text: #e7e8ed;--text-muted: #8a8e9c;--text-faint: #5b5f6e;--accent: #dc2626;--accent-hover: #ef4444;--accent-soft: rgba(220, 38, 38, .16);--accent-strong: #b91c1c;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--radius: 10px;--radius-sm: 6px;--radius-lg: 14px;--sidebar-width: 240px;--sidebar-collapsed: 72px;--topbar-height: 56px;--shadow: 0 1px 0 rgba(255, 255, 255, .02), 0 8px 24px rgba(0, 0, 0, .35);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono", monospace}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea,select{font-family:inherit}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 1fr;grid-template-rows:100vh}.app-shell[data-collapsed=true]{grid-template-columns:var(--sidebar-collapsed) 1fr}.sidebar{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:16px 20px;font-weight:700;font-size:18px;letter-spacing:.04em}.sidebar-brand .brand-mark{width:28px;height:28px;display:grid;place-items:center;background:var(--accent);color:#fff;border-radius:8px}.sidebar[data-collapsed=true] .sidebar-brand .brand-text{display:none}.sidebar-section{padding:18px 16px 6px}.sidebar-section-title{font-size:10px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);padding:0 8px}.nav-item{display:flex;align-items:center;gap:12px;padding:9px 14px;margin:2px 8px;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;transition:background .12s,color .12s}.nav-item:hover{background:var(--surface-2);color:var(--text)}.nav-item.active{background:var(--accent-soft);color:var(--accent-hover)}.nav-item.active svg{color:var(--accent-hover)}.nav-item svg{flex-shrink:0}.sidebar[data-collapsed=true] .nav-item .nav-label{display:none}.topbar{height:var(--topbar-height);border-bottom:1px solid var(--border);background:var(--surface);display:flex;align-items:center;padding:0 24px;gap:16px}.topbar-title{font-weight:700;font-size:16px;letter-spacing:.04em;text-transform:uppercase;flex:1}.topbar-actions{display:flex;align-items:center;gap:12px}.icon-btn{width:36px;height:36px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--border);border-radius:50%;cursor:pointer;color:var(--text-muted);transition:background .12s,color .12s;position:relative}.icon-btn:hover{background:var(--surface-3);color:var(--text)}.icon-btn .badge{position:absolute;top:-2px;right:-2px;background:var(--accent);color:#fff;font-size:10px;font-weight:600;width:16px;height:16px;border-radius:50%;display:grid;place-items:center}.avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-soft);color:var(--accent-hover);display:grid;place-items:center;font-weight:600;font-size:14px;border:1px solid var(--border);cursor:pointer}.main{overflow-y:auto}.main-inner{padding:24px 28px;max-width:1600px;margin:0 auto}.main-row{display:grid;grid-template-rows:var(--topbar-height) 1fr;height:100vh}.h1{font-size:22px;font-weight:700;margin:0 0 4px}.h2{font-size:16px;font-weight:600;margin:0}.muted{color:var(--text-muted);font-size:13px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;transition:background .12s,border-color .12s}.btn:hover:not(:disabled){background:var(--surface-3)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.btn.ghost{background:transparent;border:1px solid transparent}.btn.ghost:hover:not(:disabled){background:var(--surface-2)}.btn.danger{background:transparent;border-color:var(--border-strong);color:var(--danger)}.btn.danger:hover:not(:disabled){background:#ef44441a}.btn-icon{width:32px;height:32px;padding:0;display:inline-grid;place-items:center}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:12px;color:var(--text-muted);font-weight:500}.input{background:var(--bg);border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text);padding:10px 12px;font-size:14px;width:100%;transition:border-color .12s}.input:focus{outline:none;border-color:var(--accent)}.input::placeholder{color:var(--text-faint)}.auth-shell{min-height:100vh;display:grid;place-items:center;background:radial-gradient(ellipse at center top,rgba(220,38,38,.06),transparent 60%),var(--bg);padding:24px}.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px}.auth-card .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.06em;margin-bottom:24px}.auth-card h1{font-size:22px;margin:0 0 6px;font-weight:700}.auth-card .auth-sub{color:var(--text-muted);margin-bottom:24px;font-size:13px}.auth-card form{display:flex;flex-direction:column;gap:14px}.auth-card .auth-foot{margin-top:18px;text-align:center;color:var(--text-muted);font-size:13px}.auth-card .auth-foot a{color:var(--accent-hover)}.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.project-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;cursor:pointer;transition:border-color .12s,transform .12s;display:flex;flex-direction:column;gap:12px}.project-card:hover{border-color:var(--border-strong);transform:translateY(-1px)}.project-card .pc-title{font-weight:600;font-size:15px}.project-card .pc-meta{font-size:12px;color:var(--text-muted);display:flex;gap:12px}.project-card .pc-icon{width:40px;height:40px;background:var(--accent-soft);color:var(--accent-hover);border-radius:10px;display:grid;place-items:center}.tree{padding:8px 0}.tree-node{display:flex;align-items:center;gap:8px;padding:7px 12px;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-muted);font-size:13px;-webkit-user-select:none;user-select:none}.tree-node:hover{background:var(--surface-2);color:var(--text)}.tree-node.active{background:var(--accent-soft);color:var(--accent-hover)}.tree-node .tree-toggle{width:16px;display:grid;place-items:center}.tree-children{padding-left:14px;border-left:1px solid var(--border);margin-left:14px}.empty{display:grid;place-items:center;padding:80px 24px;text-align:center;color:var(--text-muted);font-size:14px}.empty .empty-icon{width:64px;height:64px;background:var(--surface);border:1px solid var(--border);border-radius:14px;display:grid;place-items:center;color:var(--text-faint);margin-bottom:16px}.row{display:flex;align-items:center;gap:12px}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px}.spacer{flex:1}.error-msg{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px}.success-msg{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--success);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px}.info-msg{background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);padding:10px 12px;border-radius:var(--radius-sm);font-size:13px}.content{padding:24px 28px;max-width:1600px;margin:0 auto;overflow-y:auto;height:100%}.content.split{display:grid;grid-template-columns:280px 1fr;gap:24px;max-width:none;padding:24px 28px}.tree-pane{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:12px;height:fit-content;position:sticky;top:24px;max-height:calc(100vh - var(--topbar-height) - 48px);overflow-y:auto}.content-pane{min-width:0}.tree-row{display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-muted);font-size:13px;-webkit-user-select:none;user-select:none}.tree-row:hover{background:var(--surface-2);color:var(--text)}.tree-row.selected{background:var(--accent-soft);color:var(--accent-hover)}.tree-toggle{background:transparent;border:none;color:var(--text-muted);cursor:pointer;display:grid;place-items:center;width:14px;padding:0}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.project-card{text-align:left;font:inherit}.project-card-icon{width:40px;height:40px;background:var(--accent-soft);color:var(--accent-hover);border-radius:10px;display:grid;place-items:center}.project-card-title{font-weight:600;font-size:15px;color:var(--text)}.project-card-meta{font-size:12px;color:var(--text-muted)}.empty-state{display:grid;place-items:center;padding:60px 24px;text-align:center;background:var(--surface);border:1px dashed var(--border-strong);border-radius:var(--radius-lg);color:var(--text-muted)}.map-view{display:grid;grid-template-rows:var(--topbar-height) 1fr;height:100vh;min-height:0}.editor-shell{display:grid;grid-template-rows:40px 1fr;min-height:0}.editor-tabs{display:flex;align-items:stretch;background:var(--surface);border-bottom:1px solid var(--border);padding:0 12px}.editor-tab{background:transparent;border:none;color:var(--text-muted);padding:0 16px;font-size:13px;font-weight:500;cursor:pointer;border-bottom:2px solid transparent}.editor-tab:hover{color:var(--text)}.editor-tab.active{color:var(--accent-hover);border-bottom-color:var(--accent)}.editor-body{min-height:0;overflow:hidden}.editor-split{display:grid;grid-template-columns:280px 1fr;height:100%;min-height:0}.editor-side{background:var(--surface);border-right:1px solid var(--border);padding:12px;overflow-y:auto}.editor-side-title{font-weight:600;font-size:13px;display:flex;align-items:center;gap:6px;margin-bottom:8px}.editor-canvas-pane{background:var(--bg);position:relative;min-width:0;min-height:0;display:flex;flex-direction:column}.edit-canvas-wrap{flex:1;display:flex;flex-direction:column;min-height:0}.edit-toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--surface)}.canvas-wrap{flex:1;position:relative;min-height:0;background:var(--bg)}.canvas-wrap .toolbar{position:absolute;top:8px;left:8px;display:flex;gap:4px;z-index:5}.canvas-wrap .toolbar button{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px 10px;font-size:12px;cursor:pointer}.canvas-wrap .toolbar button:hover{background:var(--surface-3)}.outliner-section{margin-bottom:14px}.outliner-section-title{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);padding:4px 6px}.outliner-row{display:flex;align-items:center;justify-content:space-between;padding:5px 8px;gap:4px;border-radius:var(--radius-sm);font-size:12px;color:var(--text-muted);cursor:pointer}.outliner-row:hover{background:var(--surface-2);color:var(--text)}.outliner-row.active{background:var(--accent-soft);color:var(--accent-hover)}.outliner-tabs{display:flex;gap:4px;margin-bottom:12px;border-bottom:1px solid var(--border);padding-bottom:4px}.outliner-tab{background:transparent;border:none;color:var(--text-muted);padding:6px 10px;font-size:12px;cursor:pointer;display:flex;align-items:center;gap:6px;border-radius:var(--radius-sm)}.outliner-tab:hover{background:var(--surface-2);color:var(--text)}.outliner-tab.active{background:var(--accent-soft);color:var(--accent-hover)}.layer-row{margin-bottom:6px}.layer-head{display:flex;align-items:center;gap:4px;padding:4px 6px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.layer-name{flex:1;min-width:0;background:transparent;border:none;color:var(--text);font-size:12px;padding:2px 4px;outline:none}.layer-name:focus{background:var(--bg);border-radius:3px}.layer-objects{padding:4px 0 0 4px}.layer-select{background:var(--bg);border:1px solid var(--border);border-radius:3px;color:var(--text);font-size:10px;padding:2px 4px;max-width:70px}.cat-section{margin-bottom:12px}.cat-head{display:flex;align-items:center;gap:4px;padding:4px 6px;border-bottom:1px solid var(--border);margin-bottom:4px}.cat-title{flex:1;display:flex;align-items:center;gap:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}.divider{border-top:1px solid var(--border);margin:12px 0}.library-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.library-grid-wide{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.library-card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px;cursor:grab;display:flex;flex-direction:column;gap:4px}.library-card:hover{border-color:var(--border-strong)}.library-card:active{cursor:grabbing}.library-thumb{aspect-ratio:1;background:var(--bg);border-radius:4px;overflow:hidden;display:grid;place-items:center}.library-thumb img{max-width:100%;max-height:100%;object-fit:contain}.library-name{font-size:11px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.library-meta{display:flex;align-items:center;justify-content:space-between}.small{font-size:11px}.sim-shell{display:grid;grid-template-columns:280px 1fr;height:100%;min-height:0}.sim-side{background:var(--surface);border-right:1px solid var(--border);padding:16px;overflow-y:auto;font-size:13px}.sim-side h2{font-size:14px;font-weight:600;margin:0 0 10px;text-transform:uppercase;letter-spacing:.04em;color:var(--text)}.sim-side label{display:block;font-size:11px;color:var(--text-muted);margin:12px 0 4px;font-weight:500}.sim-side .row{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.sim-side button{background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text);border-radius:var(--radius-sm);padding:6px 10px;font-size:12px;cursor:pointer;font-family:inherit;transition:background .12s}.sim-side button:hover{background:var(--surface-3)}.sim-side button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.sim-side button.primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.sim-side button.danger{color:var(--danger)}.sim-side button.active{border-color:var(--accent);color:var(--accent-hover);background:var(--accent-soft)}.sim-side select,.sim-side input[type=text],.sim-side input[type=number]{background:var(--bg);border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text);padding:6px 10px;font-size:12px;width:100%}.sim-side .divider{border-top:1px solid var(--border);margin:12px 0}.sim-side .warning{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger);padding:8px;border-radius:var(--radius-sm);font-size:12px}.sim-canvas{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}.sim-canvas .canvas-wrap{flex:1;min-height:0}.sim-bottom-bar{border-top:1px solid var(--border);background:var(--surface);padding:4px 12px}.presence-strip{display:flex;gap:-4px}.presence-dot{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:11px;font-weight:600;border:2px solid var(--surface);margin-left:-6px}.presence-dot:first-child{margin-left:0}.badge{display:inline-block;padding:2px 8px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;font-size:11px;margin-left:8px}.admin-table{width:100%;border-collapse:collapse;font-size:13px}.admin-table th{text-align:left;padding:8px 10px;color:var(--text-muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--border)}.admin-table td{padding:8px 10px;border-bottom:1px solid var(--border)}.admin-table tr:hover td{background:var(--surface-2)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:grid;place-items:center;z-index:1000}.modal{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}