diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index da90fd3..77c2a23 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -64,7 +64,7 @@ async function loadQuestions() {
     questions.value = data.questions
   } catch (err) {
     console.error('Failed to load questions', err)
-    loadError.value = 'Konfiguration konnte nicht geladen werden.'
+    loadError.value = 'Konfiguration konnte nicht geladen werden. Bitte prüfen, ob der Server läuft.'
   } finally {
     isLoadingConfig.value = false
   }
@@ -116,85 +116,117 @@ async function startSession() {
 
 <template>
   <main class="app">
-    <h1>Triage-Fragen</h1>
+    <section class="shell">
+      <header class="header">
+        <h1>Triage-Fragen</h1>
+        <p class="subtitle">Schnelle Vorab-Erfassung für die Notaufnahme</p>
+      </header>
 
-    <section>
-      <LanguageSelect v-model="language" />
+      <section class="block">
+        <LanguageSelect v-model="language" />
+      </section>
+
+      <section v-if="isLoadingConfig" class="status">
+        Konfiguration wird geladen ...
+      </section>
+
+      <section v-if="loadError" class="status error">
+        {{ loadError }}
+      </section>
+
+      <template v-if="!isLoadingConfig && !loadError">
+        <section v-if="chiefComplaintQuestion" class="block">
+          <SymptomSelector
+            v-model="chiefComplaint"
+            :title="chiefComplaintQuestion.title"
+            :options="chiefComplaintQuestion.options ?? []"
+          />
+        </section>
+
+        <section v-if="chiefComplaint && painQuestion" class="block">
+          <PainSlider
+            v-model="pain"
+            :title="painQuestion.title"
+            :min="painQuestion.min ?? 0"
+            :max="painQuestion.max ?? 10"
+          />
+        </section>
+
+        <section v-if="chiefComplaint" class="actions">
+          <button class="primary" type="button" :disabled="isSubmitting" @click="startSession">
+            <span v-if="!isSubmitting">Weiter</span>
+            <span v-else>Wird gesendet ...</span>
+          </button>
+        </section>
+
+        <section v-if="submitError" class="status error">
+          {{ submitError }}
+        </section>
+
+        <section v-if="result" class="result block">
+          <h2>Vorbereitung für MTS</h2>
+          <p>
+            Sitzungs-ID:
+            <strong>{{ result.session_id }}</strong>
+          </p>
+          <p v-if="result.proposed_presenting_flowchart">
+            Vorgeschlagenes Flussdiagramm:
+            <strong>{{ result.proposed_presenting_flowchart }}</strong>
+          </p>
+          <p v-if="result.red_flag_indicators.length">
+            Red Flags:
+            <strong>{{ result.red_flag_indicators.join(', ') }}</strong>
+          </p>
+          <p v-if="result.suggested_priority_level">
+            Vorgeschlagene Priorität:
+            <strong>{{ result.suggested_priority_level }}</strong>
+          </p>
+        </section>
+      </template>
     </section>
-
-    <section v-if="isLoadingConfig" class="status">
-      Konfiguration wird geladen ...
-    </section>
-
-    <section v-if="loadError" class="status error">
-      {{ loadError }}
-    </section>
-
-    <template v-if="!isLoadingConfig && !loadError">
-      <section v-if="chiefComplaintQuestion">
-        <SymptomSelector
-          v-model="chiefComplaint"
-          :title="chiefComplaintQuestion.title"
-          :options="chiefComplaintQuestion.options ?? []"
-        />
-      </section>
-
-      <section v-if="chiefComplaint && painQuestion">
-        <PainSlider
-          v-model="pain"
-          :title="painQuestion.title"
-          :min="painQuestion.min ?? 0"
-          :max="painQuestion.max ?? 10"
-        />
-      </section>
-
-      <section v-if="chiefComplaint" class="actions">
-        <button class="primary" type="button" :disabled="isSubmitting" @click="startSession">
-          <span v-if="!isSubmitting">Weiter</span>
-          <span v-else>Wird gesendet ...</span>
-        </button>
-      </section>
-
-      <section v-if="submitError" class="status error">
-        {{ submitError }}
-      </section>
-
-      <section v-if="result" class="result">
-        <h2>Vorbereitung für MTS</h2>
-        <p>
-          Sitzungs-ID:
-          <strong>{{ result.session_id }}</strong>
-        </p>
-        <p v-if="result.proposed_presenting_flowchart">
-          Vorgeschlagenes Flussdiagramm:
-          <strong>{{ result.proposed_presenting_flowchart }}</strong>
-        </p>
-        <p v-if="result.red_flag_indicators.length">
-          Red Flags:
-          <strong>{{ result.red_flag_indicators.join(', ') }}</strong>
-        </p>
-        <p v-if="result.suggested_priority_level">
-          Vorgeschlagene Priorität:
-          <strong>{{ result.suggested_priority_level }}</strong>
-        </p>
-      </section>
-    </template>
   </main>
 </template>
 
 <style scoped>
 .app {
+  min-height: 100vh;
+  margin: 0;
+  padding: 1.5rem 1.25rem;
+  display: flex;
+  align-items: flex-start;
+  justify-content: center;
+  background: #f5f5f7;
+  font-family: -apple-system, system-ui, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', sans-serif;
+  color: #111827;
+}
+
+.shell {
+  width: 100%;
   max-width: 480px;
-  margin: 0 auto;
-  padding: 1rem;
-  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  background: #ffffff;
+  border-radius: 24px;
+  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
+  padding: 1.75rem 1.5rem 2rem;
+}
+
+.header {
+  text-align: center;
+  margin-bottom: 1.5rem;
 }
 
 h1 {
-  text-align: center;
+  font-size: 1.6rem;
+  font-weight: 700;
+  letter-spacing: -0.02em;
+  margin-bottom: 0.25rem;
 }
 
-section {
+.subtitle {
+  font-size: 0.9rem;
+  color: #6b7280;
+}
+
+.block {
   margin-top: 1.5rem;
 }
 
@@ -204,12 +236,38 @@ section {
 
 button.primary {
   width: 100%;
-  padding: 1rem;
-  font-size: 1.1rem;
+  padding: 0.9rem 1rem;
+  font-size: 1.05rem;
+  font-weight: 600;
+  border-radius: 999px;
+  border: none;
+  background: linear-gradient(135deg, #007aff, #0b84ff);
+  color: #ffffff;
+  box-shadow: 0 10px 20px rgba(0, 122, 255, 0.35);
+  cursor: pointer;
+  transition: transform 0.08s ease-out, box-shadow 0.08s ease-out, opacity 0.15s ease-out;
+}
+
+button.primary:hover:enabled {
+  transform: translateY(-1px);
+  box-shadow: 0 14px 26px rgba(0, 122, 255, 0.45);
+}
+
+button.primary:active:enabled {
+  transform: translateY(0);
+  box-shadow: 0 6px 14px rgba(0, 122, 255, 0.3);
+}
+
+button.primary:disabled {
+  opacity: 0.6;
+  cursor: default;
+  box-shadow: none;
 }
 
 .status {
   margin-top: 1rem;
+  font-size: 0.9rem;
+  color: #4b5563;
 }
 
 .status.error {
@@ -218,8 +276,18 @@ button.primary {
 
 .result {
   margin-top: 2rem;
-  padding: 1rem;
-  border-radius: 0.5rem;
+  padding: 1.25rem 1rem 1rem;
+  border-radius: 20px;
   background: #f9fafb;
 }
+
+.result h2 {
+  font-size: 1.1rem;
+  margin-bottom: 0.75rem;
+}
+
+.result p {
+  margin-top: 0.25rem;
+  font-size: 0.95rem;
+}
 </style>
diff --git a/frontend/src/components/LanguageSelect.vue b/frontend/src/components/LanguageSelect.vue
index e263d69..50fa6f6 100644
--- a/frontend/src/components/LanguageSelect.vue
+++ b/frontend/src/components/LanguageSelect.vue
@@ -4,7 +4,7 @@ const modelValue = defineModel<string>()
 const options = [
   { code: 'de', label: 'Deutsch' },
   { code: 'en', label: 'English' },
-  { code: 'ar', label: 'العربية' }
+  { code: 'ar', label: 'العربية' },
 ]
 
 function select(code: string) {
@@ -15,6 +15,7 @@ function select(code: string) {
 <template>
   <div>
     <h2>Sprache auswählen</h2>
+    <p class="hint">Interface-Sprache für Fragen und Optionen</p>
     <div class="grid">
       <button
         v-for="opt in options"
@@ -31,18 +32,43 @@ function select(code: string) {
 </template>
 
 <style scoped>
+h2 {
+  font-size: 1rem;
+  margin-bottom: 0.1rem;
+}
+
+.hint {
+  font-size: 0.8rem;
+  color: #9ca3af;
+  margin-bottom: 0.75rem;
+}
+
 .grid {
   display: grid;
-  grid-template-columns: repeat(3, 1fr);
+  grid-template-columns: repeat(3, minmax(0, 1fr));
   gap: 0.5rem;
 }
 
 .lang-btn {
-  padding: 0.75rem 0.5rem;
+  padding: 0.55rem 0.5rem;
+  border-radius: 999px;
+  border: 1px solid #e5e7eb;
+  background: #f9fafb;
+  font-size: 0.85rem;
+  color: #111827;
+  cursor: pointer;
+  transition: background 0.12s ease-out, color 0.12s ease-out, border-color 0.12s ease-out,
+    box-shadow 0.12s ease-out, transform 0.08s ease-out;
+}
+
+.lang-btn:hover {
+  background: #f3f4f6;
 }
 
 .lang-btn.active {
-  background: #2563eb;
-  color: white;
+  background: #e5f0ff;
+  border-color: #3b82f6;
+  color: #0b1f4a;
+  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.2);
 }
 </style>
diff --git a/frontend/src/components/PainSlider.vue b/frontend/src/components/PainSlider.vue
index 1aeced3..0124273 100644
--- a/frontend/src/components/PainSlider.vue
+++ b/frontend/src/components/PainSlider.vue
@@ -24,17 +24,64 @@ function onInput(ev: Event) {
       :value="modelValue"
       @input="onInput"
     />
+    <div class="scale">
+      <span>{{ props.min }}</span>
+      <span>{{ props.max }}</span>
+    </div>
   </div>
 </template>
 
 <style scoped>
+h2 {
+  font-size: 1rem;
+  margin-bottom: 0.25rem;
+}
+
 .value {
   text-align: center;
-  font-size: 1.5rem;
-  margin-bottom: 0.5rem;
+  font-size: 2rem;
+  font-weight: 600;
+  margin-bottom: 0.25rem;
+  color: #111827;
 }
 
 input[type='range'] {
+  -webkit-appearance: none;
   width: 100%;
+  height: 6px;
+  border-radius: 999px;
+  background: #e5e7eb;
+  outline: none;
+}
+
+input[type='range']::-webkit-slider-thumb {
+  -webkit-appearance: none;
+  appearance: none;
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  background: #ffffff;
+  border: 2px solid #f97316;
+  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
+  cursor: pointer;
+  margin-top: -9px;
+}
+
+input[type='range']::-moz-range-thumb {
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  background: #ffffff;
+  border: 2px solid #f97316;
+  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
+  cursor: pointer;
+}
+
+.scale {
+  display: flex;
+  justify-content: space-between;
+  font-size: 0.8rem;
+  color: #6b7280;
+  margin-top: 0.25rem;
 }
 </style>
diff --git a/frontend/src/components/SymptomSelector.vue b/frontend/src/components/SymptomSelector.vue
index d5b330d..52767f0 100644
--- a/frontend/src/components/SymptomSelector.vue
+++ b/frontend/src/components/SymptomSelector.vue
@@ -35,18 +35,38 @@ function select(value: string) {
 </template>
 
 <style scoped>
+h2 {
+  font-size: 1rem;
+  margin-bottom: 0.75rem;
+}
+
 .grid {
   display: grid;
-  grid-template-columns: repeat(2, 1fr);
-  gap: 0.5rem;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 0.75rem;
 }
 
 .symptom-btn {
-  padding: 1rem 0.5rem;
+  padding: 0.85rem 0.75rem;
+  border-radius: 18px;
+  border: 1px solid #e5e7eb;
+  background: #f9fafb;
+  text-align: left;
+  font-size: 0.95rem;
+  color: #111827;
+  cursor: pointer;
+  transition: background 0.12s ease-out, border-color 0.12s ease-out, box-shadow 0.12s ease-out,
+    transform 0.08s ease-out;
+}
+
+.symptom-btn:hover {
+  background: #f3f4f6;
 }
 
 .symptom-btn.active {
-  background: #16a34a;
-  color: white;
+  background: linear-gradient(145deg, #22c55e, #16a34a);
+  border-color: #16a34a;
+  color: #ffffff;
+  box-shadow: 0 10px 20px rgba(34, 197, 94, 0.35);
 }
 </style>