:root{--bg:#f8f7f4;--bg-secondary:#fff;--bg-tertiary:#f0eeeb;--border:#e2dfd9;--border-light:#edeae5;--text:#2c2a26;--text-secondary:#5a574f;--text-muted:#8a8680;--accent:#6b5c3e;--accent-light:#8b7b5e;--accent-bg:#f5f0e8;--user-msg:#6b5c3e;--user-msg-text:#fff;--agent-msg:#fff;--agent-msg-text:#2c2a26;--error:#c44;--success:#5a8a5a;--online:#5a8a5a;--shadow-sm:0 1px 2px rgba(0,0,0,.06);--shadow-md:0 2px 8px rgba(0,0,0,.08);--shadow-lg:0 4px 16px rgba(0,0,0,.1);--radius:12px;--radius-sm:8px}*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-light)}::selection{background:var(--accent);color:#fff}::-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)}input,textarea{font-family:inherit}