feat: improve mobile responsiveness across UI components

- Add responsive layout for action buttons (stack vertically on mobile, horizontal on sm+)
- Adjust card max-widths for better mobile display (LocationCard, MultiBillEdit)
- Improve button text sizing with responsive classes (text-sm on mobile, text-xs on sm+)
- Remove width constraints on file inputs and info boxes for full-width mobile layout
- Fine-tune icon positioning for better visual alignment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/ui/PrintButton.tsx

@@ -6,9 +6,10 @@ import { YearMonth } from '../lib/db-types';
 
 export interface PrintButtonProps {
   yearMonth: YearMonth;
+    className?: string;
 }
 
-export const PrintButton: React.FC<PrintButtonProps> = ({ yearMonth }) => {
+export const PrintButton: React.FC<PrintButtonProps> = ({ yearMonth, className }) => {
   const t = useTranslations("home-page.month-card");
 
   const handlePrintClick = () => {
@@ -16,7 +17,7 @@ export const PrintButton: React.FC<PrintButtonProps> = ({ yearMonth }) => {
   };
 
   return (
-    <div className="card card-compact card-bordered bg-base-100 shadow-s my-1">
+    <div className={`card card-compact card-bordered bg-base-100 shadow-s my-1 ${className}`}>
       <button 
         className="card-body tooltip self-center cursor-pointer" 
         onClick={handlePrintClick}
@@ -24,7 +25,7 @@ export const PrintButton: React.FC<PrintButtonProps> = ({ yearMonth }) => {
       >
         <span className='flex self-center'>
           <PrinterIcon className="h-[1em] w-[1em] cursor-pointer text-4xl" />
-          <span className="ml-1 self-center text-xs text-left leading-[1.2em] w-[4em]">{t("print-codes-label")}</span>
+          <span className="ml-1 self-center text-sm sm:text-xs text-left sm:w-[5.5em] leading-[1.3em]">{t("print-codes-label")}</span>
         </span>
       </button>
     </div>