*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f1117;--surface: #1a1d27;--surface-2: #252836;--border: #2e3347;--accent: #4f8ef7;--accent-hover: #6ba4ff;--text-primary: #e8eaf0;--text-secondary: #8b91a7;--text-muted: #555c72;--user-bubble: #1e3a5f;--ai-bubble: #1e2535;--danger: #e05252;--success: #4caf88;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(0, 0, 0, .4)}html,body{height:100%;font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text-primary);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}#root{height:100%;display:flex;flex-direction:column}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}