*{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#fff;--bg-secondary:#f7f7f7;--bg-tertiary:#ececf1;--text-primary:#0d0d0d;--text-secondary:#565869;--text-tertiary:#8e8ea0;--border-color:#d1d5db;--accent:#10a37f;--accent-dark:#0d9488;--accent-light:#d1fae5;--user-bg:#10a37f;--assistant-bg:#f7f7f7;--error:#ef4444;--warning:#f59e0b;--sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--mono:"Monaco", "Courier New", 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