diff --git a/backend/app/config/settings.py b/backend/app/config/settings.py
index 82e79dd6..a5bd6205 100644
--- a/backend/app/config/settings.py
+++ b/backend/app/config/settings.py
@@ -36,7 +36,7 @@ SESSION_LIFETIME = timedelta(days=7)
 SSL_ENABLED = True
 SSL_CERT_PATH = "instance/ssl/myp.crt"
 SSL_KEY_PATH = "instance/ssl/myp.key"
-SSL_HOSTNAME = "raspberrypi"
+SSL_HOSTNAME = "localhost"
 
 # Scheduler-Konfiguration
 SCHEDULER_INTERVAL = 60  # Sekunden
@@ -130,7 +130,7 @@ def create_simple_ssl_cert():
         # Generiere privaten Schlüssel
         private_key = rsa.generate_private_key(
             public_exponent=65537,
-            key_size=2048,
+            key_size=4096,  # Stärkere Schlüsselgröße
         )
 
         # Schreibe privaten Schlüssel
@@ -141,9 +141,18 @@ def create_simple_ssl_cert():
                 encryption_algorithm=NoEncryption()
             ))
 
-        # Erstelle Zertifikat
+        # Aktuelles Datum und Ablaufdatum berechnen
+        now = datetime.datetime.now()
+        valid_until = now + datetime.timedelta(days=3650)  # 10 Jahre gültig
+
+        # Erstelle Zertifikat mit erweiterten Attributen
         subject = issuer = x509.Name([
             x509.NameAttribute(NameOID.COMMON_NAME, SSL_HOSTNAME),
+            x509.NameAttribute(NameOID.ORGANIZATION_NAME, "Mercedes-Benz AG"),
+            x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, "Werk 040 Berlin"),
+            x509.NameAttribute(NameOID.COUNTRY_NAME, "DE"),
+            x509.NameAttribute(NameOID.STATE_OR_PROVINCE_NAME, "Berlin"),
+            x509.NameAttribute(NameOID.LOCALITY_NAME, "Berlin")
         ])
 
         cert = x509.CertificateBuilder().subject_name(
@@ -155,19 +164,43 @@ def create_simple_ssl_cert():
         ).serial_number(
             x509.random_serial_number()
         ).not_valid_before(
-            datetime.datetime.utcnow()
+            now
         ).not_valid_after(
-            datetime.datetime.utcnow() + datetime.timedelta(days=365)
+            valid_until
         ).add_extension(
-            x509.SubjectAlternativeName([x509.DNSName(SSL_HOSTNAME)]),
+            x509.SubjectAlternativeName([
+                x509.DNSName(SSL_HOSTNAME), 
+                x509.DNSName("localhost"),
+                x509.IPAddress(socket.inet_aton("127.0.0.1"))
+            ]),
             critical=False,
+        ).add_extension(
+            x509.BasicConstraints(ca=True, path_length=None), critical=True
+        ).add_extension(
+            x509.KeyUsage(
+                digital_signature=True,
+                content_commitment=False,
+                key_encipherment=True,
+                data_encipherment=False,
+                key_agreement=False,
+                key_cert_sign=True,
+                crl_sign=True,
+                encipher_only=False,
+                decipher_only=False
+            ), critical=True
+        ).add_extension(
+            x509.ExtendedKeyUsage([
+                x509.oid.ExtendedKeyUsageOID.SERVER_AUTH,
+                x509.oid.ExtendedKeyUsageOID.CLIENT_AUTH
+            ]), critical=False
         ).sign(private_key, hashes.SHA256())
 
         # Schreibe Zertifikat
         with open(SSL_CERT_PATH, "wb") as f:
             f.write(cert.public_bytes(Encoding.PEM))
         
-        print(f"Einfaches selbstsigniertes Zertifikat erstellt: {SSL_CERT_PATH}")
+        print(f"Verbessertes selbstsigniertes Zertifikat erstellt: {SSL_CERT_PATH}")
+        print(f"Gültig bis: {valid_until.strftime('%d.%m.%Y')}")
         
     except ImportError:
         print("Konnte keine SSL-Zertifikate erstellen: cryptography-Paket nicht installiert")
diff --git a/backend/app/static/css/input.css b/backend/app/static/css/input.css
index 79f39829..7aa90e55 100644
--- a/backend/app/static/css/input.css
+++ b/backend/app/static/css/input.css
@@ -56,6 +56,19 @@
   }
 }
 
+/* Admin Panel spezifische Styles */
+@layer components {
+  /* Dark Mode Styles für Admin Panel */
+  .dark .bg-dark-card {
+    @apply bg-dark-card transition-colors;
+  }
+
+  /* Übergangseffekt für alle Komponenten */
+  .transition-all-colors {
+    @apply transition-colors duration-300;
+  }
+}
+
 /* Glassmorphism Flash Messages */
 .flash-message {
   @apply bg-white/70 dark:bg-black/70 backdrop-blur-md border border-gray-200 dark:border-slate-700/50 rounded-xl p-4 relative mb-4 shadow-md;
diff --git a/backend/app/tailwind.config.js b/backend/app/tailwind.config.js
index 562c33a6..54fbce5f 100644
--- a/backend/app/tailwind.config.js
+++ b/backend/app/tailwind.config.js
@@ -26,19 +26,19 @@ module.exports = {
         },
         // Dark Mode optimierte Farben - Verbessert
         'dark': {
-          'bg': '#0f172a',
-          'bg-secondary': '#1e293b',
+          'bg': '#0f172a',        // Dunkler Hintergrund
+          'bg-secondary': '#131c2e', // Sekundärer Hintergrund noch dunkler
           'surface': '#1e293b',
           'surface-hover': '#334155',
-          'card': '#1f2937',
-          'card-hover': '#374151',
+          'card': '#1e293b',      // Dunklere Kartenfarbe für besseren Kontrast
+          'card-hover': '#334155', // Dunklerer Hover-Zustand
           'text': '#f8fafc',
           'text-secondary': '#e2e8f0',
           'text-muted': '#94a3b8',
           'text-disabled': '#64748b',
           'border': '#334155',
           'border-light': '#475569',
-          'hover': '#374151',
+          'hover': '#334155',     // Dunklerer Hover-Zustand
           'focus': '#475569',
           'accent': '#4f46e5'
         },