:root{--bg: #0b0f17;--panel: #121a27;--border: #243042;--text: #e6edf3;--muted: #9fb0c0;--error: #ff6b6b;--accent: #6ee7ff}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji"}.shell{display:flex;height:100vh;width:100vw}.leftPane{width:33.333%;min-width:340px;border-right:1px solid var(--border);display:flex;flex-direction:column;background:var(--panel)}.rightPane{width:66.666%;display:flex;flex-direction:column}.paneHeader{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--border);background:#121a27cc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.paneTitle{font-weight:700;display:inline-flex;align-items:center;gap:8px}.chatLogo{width:18px;height:18px;border-radius:4px;object-fit:contain}.paneActions{display:flex;gap:8px;align-items:center}.tabs{display:flex;gap:6px}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:8px;cursor:pointer}.tabActive{border-color:var(--accent)}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:8px;cursor:pointer}.btn.primary{border-color:var(--accent)}.btn:disabled{opacity:.6;cursor:not-allowed}.input{background:#0b0f17b3;border:1px solid var(--border);color:var(--text);border-radius:8px;padding:8px 10px;width:100%}.textarea{resize:vertical}.muted{color:var(--muted);font-size:12px}.error{color:var(--error);font-size:12px;margin-top:8px;white-space:pre-wrap}.notice{margin:8px 12px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:#6ee7ff0f;font-size:12px}.settingsCard{margin:12px;padding:10px;border:1px solid var(--border);border-radius:10px;background:#0b0f1766}.settingsRow{display:grid;grid-template-columns:110px 1fr;gap:10px;align-items:center;margin-bottom:10px}.settingsActions{display:flex;justify-content:space-between;align-items:center;gap:10px}.label{font-size:12px;color:var(--muted)}.chatHelp{margin:0 12px 12px;font-size:12px;color:var(--muted)}.chatHelpInline{margin:2px 0 10px;font-size:12px;color:var(--muted)}.codeBlock{margin:8px 0 0;padding:10px;border:1px dashed var(--border);border-radius:10px;overflow:auto;background:#0b0f1780;color:var(--text)}.chatLog{flex:1;overflow:auto;padding:0 12px 12px}.chatMsg{padding:10px;border:1px solid var(--border);border-radius:10px;margin-bottom:10px;background:#0b0f1766}.chatRole{font-size:11px;color:var(--muted);margin-bottom:6px;text-transform:uppercase}.chatContent{font-size:13px;white-space:pre-wrap;line-height:1.45}.chatThinking{display:inline-flex;gap:10px;align-items:center}.spinner{width:14px;height:14px;border-radius:50%;border:2px solid rgba(159,176,192,.35);border-top-color:var(--accent);animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.chatComposer{border-top:1px solid var(--border);padding:12px;display:flex;flex-direction:column;gap:8px}.composerActions{display:flex;align-items:center;justify-content:space-between}.filesShell{flex:1;display:grid;grid-template-columns:280px 8px 1fr;height:calc(100vh - 52px)}.fileTree{padding:12px;overflow:auto;background:#121a27b3}.splitter{cursor:col-resize;background:#243042cc}.splitterActive{background:#6ee7ff40}.sectionTitle{font-size:12px;color:var(--muted);text-transform:uppercase;margin:10px 0 8px}.treeRow{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%}.treeName{width:100%;text-align:left;background:transparent;border:0;color:var(--text);padding:6px 8px;border-radius:8px;cursor:pointer}.treeName:hover{background:#6ee7ff14}.treeDirName{font-size:12px;color:var(--muted);padding:6px 8px;border-radius:8px;-webkit-user-select:none;user-select:none}.treeAction{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:1px solid var(--border);color:var(--muted);padding:4px 8px;border-radius:8px;cursor:pointer;font-size:12px;flex:0 0 auto}.treeAction:hover{border-color:#ff6b6b99;color:var(--text)}.row{display:flex;gap:8px;flex-wrap:wrap}.editor{display:flex;flex-direction:column;height:100%}.editorHeader{padding:10px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px}.editorTitle{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.editorActions{display:flex;gap:10px;align-items:center;min-width:360px}.editorTextarea{flex:1;width:100%;border:0;outline:none;padding:12px;resize:none;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:13px;background:#0b0f1799;color:var(--text)}.footerRow{padding:8px 12px;border-top:1px solid var(--border)}.previewShell{flex:1;height:calc(100vh - 52px)}.previewFrame{width:100%;height:100%;border:0;background:#fff}