class DataStyleSanitizer::Processor

def inject_style_block 

def inject_style_block
  return if @styles.empty?
  # Create the <style> tag
  style_tag = Nokogiri::XML::Node.new("style", @doc)
  style_tag["nonce"] = @nonce
  # Generate CSS rules
  css_rules = @styles.map do |class_name, rule|
    rule_lines = rule.split(";").map(&:strip).reject(&:empty?)
    rule_lines.map! { |line| "#{line.strip} !important;" } # Ensure override
    ".#{class_name} { #{rule_lines.join(" ")} }"
  end.join("\n")
  style_tag.content = css_rules
  # Add the <style> tag to the <head> if it exists, otherwise to the <body> or fragment
  head = @doc.at_css("head")
  if head
    head.add_child(style_tag)
  else
    body = @doc.at_css("body")
    if body
      body.add_child(style_tag)
    else
      @doc.add_child(style_tag) # Append directly to the fragment
    end
  end
end