:root{--bg:#1a1a2e;--surface:#252540;--surface2:#2d2d4d;--surface3:#3b3b5c;--border:#2d2d4d;--border-bright:#4b4b6c;--text:#f3f4f6;--text-muted:#9ca3af;--text-dim:#6b7280;--accent:#3b82f6;--accent-glow:#3b82f626;--accent-dim:#3b82f614;--green:#10b981;--green-dim:#10b98114;--red:#ef4444;--red-dim:#ef444414;--yellow:#f59e0b;--yellow-dim:#f59e0b14;--purple:#a78bfa;--orange:#f97316;--mono:"JetBrains Mono", monospace;--sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);height:100%;color:var(--text);font-family:var(--sans);font-size:14px;line-height:1.6}.app{flex-direction:column;min-height:100vh;display:flex}header{border-bottom:1px solid var(--border);background:var(--bg);z-index:100;flex-shrink:0;justify-content:space-between;align-items:center;padding:20px 40px;display:flex;position:sticky;top:0}.logo-header{align-items:center;gap:12px;text-decoration:none;display:flex}.logo-header span{color:var(--text);font-size:24px;font-weight:600}header nav{align-items:center;gap:30px;margin-left:auto;display:flex}header nav a{color:var(--text-muted);font-size:15px;text-decoration:none;transition:color .2s}header nav a:hover,header nav a.active{color:var(--text)}.github-link{background:var(--surface);border-radius:8px;align-items:center;gap:8px;padding:8px 16px;transition:background .2s;display:flex;color:var(--text)!important}.github-link:hover{background:var(--surface2)}.badge{font-family:var(--mono);background:var(--accent-dim);color:var(--accent);letter-spacing:.5px;border:1px solid #3b82f633;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:700}.nav-dropdown{position:relative}.nav-dropdown-btn{color:var(--text-muted);font-family:var(--sans);cursor:pointer;background:0 0;border:none;align-items:center;gap:4px;font-size:15px;transition:color .2s;display:flex}.nav-dropdown-btn:hover,.nav-dropdown-btn.active{color:var(--text)}.dropdown-arrow{font-size:10px}.nav-dropdown-menu{background:var(--surface);border:1px solid var(--border-bright);z-index:200;border-radius:8px;min-width:160px;margin-top:8px;padding:6px 0;display:none;position:absolute;top:100%;left:50%;transform:translate(-50%);box-shadow:0 8px 24px #0000004d}.nav-dropdown.is-open .nav-dropdown-menu{display:block}.nav-dropdown-menu a:focus{background:var(--surface2);color:var(--text);outline:none}.nav-dropdown-menu a{color:var(--text-muted);padding:8px 16px;font-size:14px;text-decoration:none;transition:all .15s;display:block}.nav-dropdown-menu a:hover{background:var(--surface2);color:var(--text)}.nav-dropdown-menu a.active{color:var(--accent)}.mode-bar{border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0;align-items:center;gap:16px;height:44px;padding:0 24px;display:flex}.mode-label{text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);font-size:11px;font-weight:600}.mode-toggle{background:var(--bg);border:1px solid var(--border);border-radius:6px;display:flex;overflow:hidden}.mode-btn{font-family:var(--mono);color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:5px 14px;font-size:12px;font-weight:500;transition:all .15s}.mode-btn:hover{color:var(--text);background:var(--surface3)}.mode-btn.active{color:#fff;background:linear-gradient(135deg,#3b82f6,#1d4ed8)}.mode-desc{font-family:var(--mono);color:var(--text-dim);background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:3px 10px;font-size:11px}.action-bar{border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0;align-items:center;gap:16px;height:48px;padding:0 24px;display:flex}.explore-btn{font-family:var(--mono);color:#fff;cursor:pointer;background:linear-gradient(135deg,#3b82f6,#1d4ed8);border:none;border-radius:6px;align-items:center;gap:8px;padding:6px 20px;font-size:13px;font-weight:600;transition:all .15s;display:flex}.explore-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d}.status-pill{font-family:var(--mono);background:var(--surface);border:1px solid var(--border);border-radius:12px;align-items:center;gap:6px;padding:4px 12px;font-size:11px;display:flex}.status-dot{border-radius:50%;width:6px;height:6px}.status-pill.idle .status-dot{background:var(--text-dim)}.status-pill.valid .status-dot{background:var(--green)}.status-pill.invalid .status-dot{background:var(--red)}.stats-text{font-family:var(--mono);color:var(--text-dim);font-size:11px}.load-example-btn{font-family:var(--mono);border:1px solid var(--border-bright);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:5px;margin-left:auto;padding:5px 12px;font-size:11px;font-weight:500;transition:all .15s}.load-example-btn:hover{color:var(--accent);border-color:var(--accent)}.tree-node-row:focus-visible,.path-row:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.platform-bar{border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0;align-items:center;gap:16px;height:44px;padding:0 24px;display:flex}.platform-label{text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);font-size:11px;font-weight:600}.platform-toggle{background:var(--bg);border:1px solid var(--border);border-radius:6px;display:flex;overflow:hidden}.platform-btn{font-family:var(--mono);color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:5px 14px;font-size:12px;font-weight:500;transition:all 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12px;font-size:12px}.tree-search:focus{border-color:var(--accent);outline:none}.tree-controls{gap:6px;display:flex}.tree-controls button{font-family:var(--mono);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:4px;padding:4px 8px;font-size:10px}.tree-controls button:hover{color:var(--text);border-color:var(--border-bright)}.tree-body{flex:1;padding:8px 0;overflow:auto}.tree-empty{text-align:center;color:var(--text-dim);padding:40px}.tree-empty .icon{opacity:.5;margin-bottom:12px;font-size:32px}.tree-node{user-select:none}.tree-node-row{cursor:pointer;white-space:nowrap;align-items:center;gap:6px;padding:3px 12px 3px 0;transition:background .1s;display:flex}.tree-node-row:hover{background:var(--surface)}.tree-node-row.selected{background:var(--accent-dim);border-right:2px solid var(--accent)}.tree-node-row.hidden{display:none}.tree-toggle{width:16px;height:16px;color:var(--text-dim);flex-shrink:0;justify-content:center;align-items:center;font-size:10px;display:flex}.tree-toggle.has-children{cursor:pointer}.tree-toggle.has-children:hover{color:var(--text)}.tree-name{color:var(--text);font-size:13px}.tree-node-row.selected .tree-name{color:var(--accent)}.rm-badge{font-family:var(--mono);text-transform:uppercase;letter-spacing:.3px;border-radius:3px;flex-shrink:0;padding:1px 5px;font-size:9px;font-weight:700}.rm-badge.composition{background:var(--accent-dim);color:var(--accent);border:1px solid #3b82f633}.rm-badge.observation{background:var(--green-dim);color:var(--green);border:1px solid #10b98133}.rm-badge.evaluation,.rm-badge.instruction,.rm-badge.action,.rm-badge.admin_entry{color:var(--purple);background:#a78bfa14;border:1px solid #a78bfa33}.rm-badge.section{color:var(--yellow);background:#f59e0b14;border:1px solid #f59e0b33}.rm-badge.cluster{color:var(--orange);background:#f9731614;border:1px solid #f9731633}.rm-badge.element,.rm-badge.dv{background:var(--surface2);color:var(--text-muted);border:1px solid var(--border)}.rm-badge.structural{background:var(--surface2);color:var(--text-dim);border:1px solid var(--border)}.occ-badge{font-family:var(--mono);border-radius:3px;flex-shrink:0;padding:1px 5px;font-size:9px}.occ-badge.required{color:var(--red);background:#ef444414;border:1px solid #ef444433}.occ-badge.optional{background:var(--surface2);color:var(--text-dim);border:1px solid var(--border)}.archetype-label{font-family:var(--mono);color:var(--text-dim);opacity:.7;flex-shrink:0;font-size:9px}.detail-panel{background:var(--surface);border-left:1px solid var(--border);flex-shrink:0;width:380px;overflow-y:auto}.detail-empty{text-align:center;color:var(--text-dim);padding:40px 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var(--border);background:var(--bg);font-family:var(--mono);color:var(--text-dim);flex-wrap:wrap;flex-shrink:0;justify-content:center;align-items:center;gap:12px;padding:12px 24px;font-size:11px;display:flex}footer a{color:var(--accent);text-decoration:none}footer a:hover{text-decoration:underline}.sep{opacity:.3}.engine-status{align-items:center;gap:6px;display:flex}.engine-dot{border-radius:50%;width:6px;height:6px}.engine-dot.loading{background:var(--yellow);animation:1.5s infinite pulse}.engine-dot.python{background:var(--green)}.engine-dot.js{background:var(--yellow)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.loading-overlay{z-index:1000;background:#1a1a2ee6;flex-direction:column;justify-content:center;align-items:center;transition:opacity .3s;display:flex;position:fixed;inset:0}.loading-overlay.hidden{opacity:0;pointer-events:none}.loading-spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:32px;height:32px;margin-bottom:16px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-family:var(--mono);color:var(--text);font-size:14px}.toast{font-family:var(--mono);background:var(--surface);border:1px solid var(--border-bright);color:var(--text);z-index:1100;pointer-events:none;border-radius:8px;padding:10px 20px;font-size:12px;transition:transform .3s;position:fixed;bottom:24px;left:50%;transform:translate(-50%)translateY(100px);box-shadow:0 8px 24px #0000004d}.toast.show{transform:translate(-50%)translateY(0)}.toast.warn{border-color:var(--yellow)}@media (width<=768px){header{padding:12px 16px}.action-bar{flex-wrap:wrap;gap:8px 16px;height:auto;min-height:48px;padding:8px 16px}.main-content{flex-direction:column}.detail-panel{border-left:none;border-top:1px solid var(--border);width:100%;max-height:300px}}