html, body { margin: 0; padding: 0; min-height: 100%; background: var(--bg-page); }
  body { font-family: var(--font-sans); }
  /* chat typing indicator (was an inline <style> in screens/chat.jsx; CSP style-src 'self') */
  .typing-dot { display: inline-block; animation: typing 1s infinite; margin: 0 1px; }
  @keyframes typing { 0%, 60%, 100% { opacity: 0.3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-2px); } }