:root{--bg: #0f1420;--panel: #161c2b;--panel-2: #1d2436;--border: #2a3348;--text: #e6ebf5;--muted: #8a94a8;--accent: #4f8cff;--str: #7ee787;--num: #f0a45d;--bool: #d2a8ff;--null: #6b7689;--semantic: #56d4dd;--err: #ff6b6b}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.boot-msg{padding:24px;color:var(--muted)}.boot-error{color:var(--err)}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;background:var(--panel);border-bottom:1px solid var(--border)}.brand{font-weight:600;font-size:15px;letter-spacing:.2px}.brand-sub{color:var(--accent);font-weight:500;margin-left:6px}.env-pill{font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:2px 10px}.panes{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);min-height:0}.pane{background:var(--bg);display:flex;flex-direction:column;min-height:0}.pane-head{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--panel);border-bottom:1px solid var(--border)}.pane-head h2{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.pane-actions{display:flex;align-items:center;gap:12px}.editor{flex:1;resize:none;border:none;outline:none;background:var(--bg);color:var(--text);padding:14px;font-family:SF Mono,JetBrains Mono,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;-moz-tab-size:2;tab-size:2}.result{flex:1;overflow:auto;padding:12px 14px}.primary-btn{background:var(--accent);color:#fff;border:none;border-radius:6px;padding:6px 14px;font-size:13px;font-weight:600;cursor:pointer}.primary-btn:disabled{opacity:.6;cursor:default}.link-btn{background:none;border:none;color:var(--muted);font-size:13px;cursor:pointer;text-decoration:underline}.toggle{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}.err-banner,.parse-err{border:1px solid var(--err);border-radius:6px;padding:10px 12px;margin-bottom:10px}.err-banner{color:var(--err)}.parse-err{background:#ff6b6b14}.parse-err-loc{font-size:12px;color:var(--err);font-weight:600}.parse-err-msg{margin-top:4px;font-family:monospace}.raw{margin:0;font-family:SF Mono,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.55;color:var(--text);white-space:pre}.tree{font-family:SF Mono,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.65}.tree-empty{color:var(--muted);font-style:italic;padding:8px 2px}.tree-row{display:flex;align-items:baseline;gap:6px;white-space:nowrap}.tree-toggle{cursor:pointer;border-radius:4px}.tree-toggle:hover{background:var(--panel-2)}.tree-caret{color:var(--muted);width:12px;display:inline-block}.tree-key{color:var(--muted)}.tree-verb{color:var(--accent);font-weight:600;background:#4f8cff1f;border-radius:4px;padding:0 6px}.tree-summary{color:var(--null)}.tree-str{color:var(--str)}.tree-num{color:var(--num)}.tree-bool{color:var(--bool)}.tree-null{color:var(--null)}.tree-semantic{color:var(--semantic);font-weight:600}