Add PWA support and mobile optimizations

- Add manifest.json with PWA configuration
- Add viewport settings for iOS (viewport-fit: cover)
- Add meta tags for iOS Safari (apple-mobile-web-app-capable)
- Add mobile CSS optimizations:
  * iOS Safe Area support
  * Minimum 44x44px touch targets
  * Disable zoom on input focus
  * Remove scrollbars on mobile
  * Disable hover effects on touch devices
  * Standalone mode styles
- Add InstallPrompt component for Add to Home Screen
- Add SVG icon (needs PNG conversion)

frontend/src/app/(dashboard)/layout.tsx

@@ -5,6 +5,7 @@ import { useRouter, usePathname } from "next/navigation"
 import { useAuth } from "@/lib/auth"
 import { Loader2 } from "lucide-react"
 import { Sidebar } from "@/components/layout/Sidebar"
+import { InstallPrompt } from "@/components/ui/install-prompt"
 
 export default function DashboardLayout({
   children,
@@ -46,6 +47,7 @@ export default function DashboardLayout({
           {children}
         </div>
       </main>
+      <InstallPrompt />
     </div>
   )
 }

frontend/src/app/globals.css

@@ -126,23 +126,80 @@
   }
   html {
     @apply font-sans;
-}
+  }
 
-::-webkit-scrollbar {
+  ::-webkit-scrollbar {
     width: 6px;
     height: 6px;
-}
+  }
 
-::-webkit-scrollbar-track {
+  ::-webkit-scrollbar-track {
     background: transparent;
-}
+  }
 
-::-webkit-scrollbar-thumb {
+  ::-webkit-scrollbar-thumb {
     background: oklch(0.5 0 0 / 20%);
     border-radius: 3px;
-}
+  }
 
-::-webkit-scrollbar-thumb:hover {
+  ::-webkit-scrollbar-thumb:hover {
     background: oklch(0.5 0 0 / 35%);
-}
+  }
+
+  /* Mobile/PWA Optimierungen */
+  html {
+    -webkit-tap-highlight-color: transparent;
+    touch-action: manipulation;
+  }
+
+  /* iOS Safe Areas */
+  body {
+    padding-top: env(safe-area-inset-top);
+    padding-bottom: env(safe-area-inset-bottom);
+    padding-left: env(safe-area-inset-left);
+    padding-right: env(safe-area-inset-right);
+  }
+
+  /* Kein Zoom bei Input-Fokus auf iOS */
+  input, select, textarea {
+    font-size: 16px;
+  }
+
+  /* Scrollbar auf Mobile ausblenden */
+  @media (max-width: 768px) {
+    ::-webkit-scrollbar {
+      display: none;
+    }
+    body {
+      scrollbar-width: none;
+    }
+  }
+
+  /* Minimum Touch Target 44x44px */
+  button, a, input, select, textarea, [role="button"] {
+    min-height: 44px;
+    min-width: 44px;
+  }
+
+  /* Kein Hover-Effekt auf Touch-Geräten */
+  @media (hover: none) {
+    *:hover {
+      -webkit-transform: none !important;
+      transform: none !important;
+    }
+  }
+
+  /* PWA App-Look im Standalone-Modus */
+  @media (display-mode: standalone) {
+    html {
+      height: 100vh;
+      height: 100dvh;
+    }
+    body {
+      overflow: hidden;
+      position: fixed;
+      width: 100%;
+      height: 100%;
+    }
+  }
 }

frontend/src/app/layout.tsx

@@ -1,4 +1,4 @@
-import type { Metadata } from "next"
+import type { Metadata, Viewport } from "next"
 import { Syne, DM_Sans } from "next/font/google"
 import "./globals.css"
 import { Providers } from "./providers"
@@ -15,9 +15,33 @@ const dmSans = DM_Sans({
   weight: ["400", "500", "600", "700"],
 })
 
+export const viewport: Viewport = {
+  width: "device-width",
+  initialScale: 1,
+  maximumScale: 1,
+  userScalable: false,
+  themeColor: "#1B1A55",
+  viewportFit: "cover",
+}
+
 export const metadata: Metadata = {
   title: "WrestleDesk",
   description: "Wrestling Club Management System",
+  manifest: "/manifest.json",
+  appleWebApp: {
+    capable: true,
+    statusBarStyle: "black-translucent",
+    title: "WrestleDesk",
+  },
+  icons: {
+    icon: [
+      { url: "/icon-192.png", sizes: "192x192", type: "image/png" },
+      { url: "/icon-512.png", sizes: "512x512", type: "image/png" },
+    ],
+    apple: [
+      { url: "/icon-192.png", sizes: "192x192", type: "image/png" },
+    ],
+  },
 }
 
 export default function RootLayout({

frontend/src/components/ui/install-prompt.tsx

@@ -0,0 +1,63 @@
+"use client"
+
+import { useState, useEffect } from "react"
+import { Button } from "@/components/ui/button"
+import { X } from "lucide-react"
+
+export function InstallPrompt() {
+  const [show, setShow] = useState(false)
+  const [isIOS, setIsIOS] = useState(false)
+  const [isStandalone, setIsStandalone] = useState(false)
+
+  useEffect(() => {
+    // Prüfe ob bereits als PWA installiert
+    const standalone = window.matchMedia('(display-mode: standalone)').matches ||
+                      (window.navigator as any).standalone ||
+                      document.referrer.includes('android-app://')
+    setIsStandalone(standalone)
+
+    // Prüfe iOS
+    const isIOSDevice = /iPad|iPhone|iPod/.test(navigator.userAgent) && !(window as any).MSStream
+    setIsIOS(isIOSDevice)
+
+    // Zeige Prompt nur wenn nicht bereits installiert und nicht bereits geschlossen
+    const dismissed = localStorage.getItem('install-prompt-dismissed')
+    if (!standalone && !dismissed) {
+      // Verzögert anzeigen
+      setTimeout(() => setShow(true), 3000)
+    }
+  }, [])
+
+  const handleDismiss = () => {
+    setShow(false)
+    localStorage.setItem('install-prompt-dismissed', 'true')
+  }
+
+  if (!show || isStandalone) return null
+
+  return (
+    <div className="fixed bottom-0 left-0 right-0 z-50 p-4 bg-card border-t shadow-lg safe-area-bottom">
+      <div className="flex items-center justify-between max-w-lg mx-auto">
+        <div className="flex-1">
+          <p className="text-sm font-medium">
+            WrestleDesk als App installieren
+          </p>
+          {isIOS ? (
+            <p className="text-xs text-muted-foreground mt-0.5">
+              Tippe auf Teilen → "Zum Home Screen hinzufügen"
+            </p>
+          ) : (
+            <p className="text-xs text-muted-foreground mt-0.5">
+              Installieren für schnellen Zugriff
+            </p>
+          )}
+        </div>
+        <div className="flex items-center gap-2">
+          <Button size="sm" variant="ghost" onClick={handleDismiss}>
+            <X className="w-4 h-4" />
+          </Button>
+        </div>
+      </div>
+    </div>
+  )
+}