[BUG] Remote Control prompt input focus zoom iOS browsers (probably android too)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

On mobile Safari and Chrome (iOS), focusing the prompt input causes the browser to automatically zoom in. This is because the input's font-size is below 16px.

iOS browsers auto-zoom any <input> or <textarea> with a computed font-size less than 16px when focused. This is disorienting and requires the user to manually zoom back out after every interaction.

What Should Happen?

Expected Behavior

The prompt input should not trigger browser auto-zoom on focus. The page should remain at its current zoom level.

Suggested Fix

Set the prompt input's font-size to at least 16px on mobile viewports:

• Context: Claude Code mobile web interface

Error Messages/Logs

Steps to Reproduce

Use the web interface on mobile device browser

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v2.1.56

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_