module Tryouts::Console

def style(*att, io: nil)
  # Only output ANSI codes if colors are supported
  target_io = io || $stdout
  # Explicit color control via environment variables
  # FORCE_COLOR/CLICOLOR_FORCE override NO_COLOR
  return "\e[%sm" % att.join(';') if ENV['FORCE_COLOR'] || ENV['CLICOLOR_FORCE']
  return '' if ENV['NO_COLOR']
  # Check if we're outputting to a real TTY
  tty_output = (target_io.respond_to?(:tty?) && target_io.tty?) ||
               ($stdout.respond_to?(:tty?) && $stdout.tty?) ||
               ($stderr.respond_to?(:tty?) && $stderr.tty?)
  # If we have a real TTY, always use colors
  return "\e[%sm" % att.join(';') if tty_output
  # For environments like Claude Code where TTY detection fails but we want colors
  # Check if output appears to be redirected to a file/pipe
  if ENV['TERM'] && ENV['TERM'] != 'dumb'
    # Check if stdout/stderr look like they're redirected using file stats
    begin
      stdout_stat = $stdout.stat
      stderr_stat = $stderr.stat
      # If either stdout or stderr looks like a regular file or pipe, disable colors
      stdout_redirected = stdout_stat.file? || stdout_stat.pipe?
      stderr_redirected = stderr_stat.file? || stderr_stat.pipe?
      # Enable colors if neither appears redirected
      return "\e[%sm" % att.join(';') unless stdout_redirected || stderr_redirected
    rescue StandardError
      # If stat fails, fall back to enabling colors with TERM set
      return "\e[%sm" % att.join(';')
    end
  end
  # Default: no colors
  ''
end