🗑️ Refactor: Remove obsolete printer check scripts and update app logic

**Änderungen:**
- ✅ check_printer_ips.py und check_printers.py: Entfernt nicht mehr benötigte Skripte zur Überprüfung von Drucker-IP-Adressen.
- ✅ DRUCKER_STATUS_REQUIREMENTS.md: Veraltete Anforderungen entfernt.
- ✅ setup_standard_printers.py: Anpassungen zur Vereinheitlichung der Drucker-IP.
- ✅ app.py: Logik zur Filterung offline/unreachable Drucker aktualisiert.

**Ergebnis:**
- Bereinigung des Codes durch Entfernen nicht mehr benötigter Dateien.
- Optimierte Logik zur Handhabung von Druckerstatus in der Anwendung.

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

backend/static/css/dark-light-unified.css

@@ -199,6 +199,15 @@
     background: rgba(0, 0, 0, 0.5);
     backdrop-filter: blur(8px);
     z-index: 50;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 1rem;
+    cursor: pointer;
+}
+
+.modal-overlay.hidden {
+    display: none !important;
 }
 
 .dark .modal-overlay {
@@ -211,6 +220,18 @@
     border-radius: 20px;
     box-shadow: var(--shadow-modal);
     backdrop-filter: var(--glass-blur);
+    max-width: 90vw;
+    max-height: 90vh;
+    overflow-y: auto;
+    transform: scale(0.95);
+    opacity: 0;
+    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+    cursor: default;
+}
+
+.modal.show {
+    transform: scale(1);
+    opacity: 1;
 }
 
 .modal-header {
@@ -222,6 +243,88 @@
     color: var(--text-secondary);
 }
 
+/* Mercedes Modal Specific Styling */
+.mercedes-modal {
+    background: var(--gradient-modal);
+    border: 1px solid var(--border-primary);
+    border-radius: 20px;
+    box-shadow: var(--shadow-modal);
+    backdrop-filter: var(--glass-blur);
+    max-width: 90vw;
+    max-height: 90vh;
+    overflow-y: auto;
+    transform: scale(0.95);
+    opacity: 0;
+    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+    scrollbar-width: thin;
+    scrollbar-color: rgba(0, 115, 206, 0.2) transparent;
+    cursor: default;
+}
+
+.mercedes-modal.show {
+    transform: scale(1);
+    opacity: 1;
+}
+
+.mercedes-modal::-webkit-scrollbar {
+    width: 8px;
+}
+
+.mercedes-modal::-webkit-scrollbar-track {
+    background: transparent;
+    border-radius: 4px;
+}
+
+.mercedes-modal::-webkit-scrollbar-thumb {
+    background: rgba(0, 115, 206, 0.2);
+    border-radius: 4px;
+    transition: all 0.3s ease;
+}
+
+.mercedes-modal::-webkit-scrollbar-thumb:hover {
+    background: rgba(0, 115, 206, 0.4);
+}
+
+.dark .mercedes-modal::-webkit-scrollbar-thumb {
+    background: rgba(255, 255, 255, 0.2);
+}
+
+.dark .mercedes-modal::-webkit-scrollbar-thumb:hover {
+    background: rgba(255, 255, 255, 0.4);
+}
+
+/* Modal Animation Classes */
+.modal-enter {
+    opacity: 0;
+    transform: scale(0.9) translateY(-20px);
+}
+
+.modal-enter-active {
+    opacity: 1;
+    transform: scale(1) translateY(0);
+    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.modal-exit {
+    opacity: 1;
+    transform: scale(1) translateY(0);
+}
+
+.modal-exit-active {
+    opacity: 0;
+    transform: scale(0.9) translateY(-20px);
+    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+/* Modal Overlay Click-to-Close Functionality */
+.modal-overlay[data-closable="true"] {
+    cursor: pointer;
+}
+
+.modal-overlay[data-closable="true"] .mercedes-modal {
+    cursor: default;
+}
+
 /* === FORM ELEMENTS === */
 .form-input {
     @apply w-full px-4 py-3 rounded-lg transition-all duration-200;
@@ -420,10 +523,6 @@
 }
 
 /* === LEGACY COMPATIBILITY === */
-.mercedes-modal {
-    @extend .modal;
-}
-
 .glass-modal {
     @extend .modal;
     @extend .glass-card;