:root{--bg-0: #0b0e14;--bg-1: #111621;--bg-2: #182030;--bg-3: #222c40;--border: #2a364f;--text-0: #f1f5f9;--text-1: #cbd5e1;--text-2: #94a3b8;--accent: #38bdf8;--accent-strong: #0284c7;--pass: #10b981;--warn: #f59e0b;--fail: #ef4444;--ext: #06b6d4}*{box-sizing:border-box;margin:0;padding:0}body,html,#root{width:100%;height:100%;overflow:hidden;background:var(--bg-0);color:var(--text-0);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13px}.ide-shell{display:flex;flex-direction:column;width:100vw;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;height:42px;padding:0 12px;background:var(--bg-1);border-bottom:1px solid var(--border);gap:10px}.topbar-left{display:flex;align-items:center;gap:8px;flex-shrink:0}.topbar-center,.topbar-right{display:flex;align-items:center;gap:8px}.brand-badge{font-weight:700;color:var(--accent);letter-spacing:.4px;padding-right:8px;border-right:1px solid var(--border)}.context-tabs,.preset-tabs{display:flex;background:var(--bg-0);border:1px solid var(--border);border-radius:6px;padding:2px;gap:2px}.tab-btn{background:transparent;color:var(--text-2);border:none;padding:4px 9px;border-radius:4px;cursor:pointer;font-size:12px;font-weight:500}.tab-btn:hover{color:var(--text-0);background:var(--bg-2)}.tab-btn.active{background:var(--accent-strong);color:#fff}.btn{background:var(--bg-2);color:var(--text-0);border:1px solid var(--border);padding:5px 10px;border-radius:5px;cursor:pointer;font-size:12px;font-weight:500}.btn:hover:not(:disabled){background:var(--bg-3);border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent-strong);border-color:var(--accent);color:#fff}.btn-danger{background:#7f1d1d;border-color:var(--fail);color:#fff}.workspace-middle{display:grid;grid-template-columns:270px 1fr 330px;flex:1;min-height:0;overflow:hidden}.workspace-middle.minimal{grid-template-columns:1fr}.panel{display:flex;flex-direction:column;background:var(--bg-1);border-right:1px solid var(--border);min-height:0;overflow:hidden}.panel-right{border-right:none;border-left:1px solid var(--border)}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;background:var(--bg-2);border-bottom:1px solid var(--border);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-1)}.panel-body{flex:1;overflow-y:auto;padding:8px}.viewport-area{display:flex;flex-direction:column;background:#07090e;min-height:0;position:relative}.viewport-toolbar{display:flex;align-items:center;justify-content:space-between;padding:6px 10px;background:var(--bg-1);border-bottom:1px solid var(--border);gap:8px}.viewport-grid-single{flex:1;position:relative;min-height:0}.viewport-grid-quad{flex:1;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:2px;background:var(--border);min-height:0}.viewport-pane{position:relative;width:100%;height:100%;background:#080b11;overflow:hidden}.viewport-label{position:absolute;top:8px;left:8px;background:#0f172ad9;border:1px solid var(--border);padding:2px 7px;border-radius:4px;font-size:11px;color:var(--accent);pointer-events:none;z-index:5}.bottom-drawer{height:250px;background:var(--bg-1);border-top:1px solid var(--border);display:flex;flex-direction:column}.statusbar{height:28px;background:var(--bg-2);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 12px;font-size:11px;color:var(--text-2)}.tree-item{display:flex;align-items:center;justify-content:space-between;padding:5px 8px;border-radius:4px;cursor:pointer;margin-bottom:2px;border:1px solid transparent}.tree-item:hover{background:var(--bg-2)}.tree-item.selected{background:#38bdf826;border-color:var(--accent)}.badge{display:inline-block;padding:2px 6px;border-radius:4px;font-size:10px;font-weight:700;font-family:monospace}.field-row{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}.field-label{font-size:11px;color:var(--text-2);font-weight:600}.input,.select{background:var(--bg-0);border:1px solid var(--border);color:var(--text-0);padding:5px 8px;border-radius:4px;font-size:12px;width:100%}.vec3-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}.validation-matrix{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-bottom:8px}.layer-card{background:var(--bg-0);border:1px solid var(--border);border-radius:5px;padding:6px 8px;display:flex;flex-direction:column;gap:3px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b8;display:flex;align-items:center;justify-content:center;z-index:100}.modal-card{background:var(--bg-1);border:1px solid var(--border);border-radius:8px;width:520px;max-width:94vw;padding:16px;box-shadow:0 20px 50px #0009}