:root{--bg: #faf9f7;--bg-sidebar: #f0eee7;--bg-bubble-user: #e8e6df;--bg-bubble-assistant: transparent;--text: #2d2a26;--text-muted: #8a8478;--border: #e0ddd4;--accent: #c96442;--accent-hover: #b5563a;--danger: #c0392b;--radius: 12px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #262624;--bg-sidebar: #1f1e1c;--bg-bubble-user: #34322e;--bg-bubble-assistant: transparent;--text: #ece9e2;--text-muted: #948f84;--border: #3a3834}}*{box-sizing:border-box}html,body{height:100%;margin:0;overflow:hidden;position:fixed;inset:0;overscroll-behavior:none}#root{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text)}.app-shell{display:flex;height:100vh;height:100dvh;overflow:hidden}.sidebar{width:280px;flex-shrink:0;background:var(--bg-sidebar);border-right:1px solid 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