diff --git a/assets/styles/main.sass b/assets/styles/main.sass
index 8a6db02..fd64d7b 100644
--- a/assets/styles/main.sass
+++ b/assets/styles/main.sass
@@ -143,7 +143,12 @@ body
   opacity: 0
 
 *:focus
-  outline: 1px solid transparent                       
+  outline: none    
+
+body.user-is-tabbing *:focus
+  outline: none
+  box-shadow: 0 0 0 4px $pink !important
+  border-radius: 5px                  
 
 /*.router-link-active
   position: relative
diff --git a/components/Breadcrumbs.vue b/components/Breadcrumbs.vue
index af435b9..f2877c8 100644
--- a/components/Breadcrumbs.vue
+++ b/components/Breadcrumbs.vue
@@ -6,7 +6,17 @@
     aria-label="Breadcrumb"
   >
     <div class="breadcrumb-container">
-      <div class="breadcrumb-trigger" @click="toggleOpen" aria-label="Breadcrumb öffnen">
+      <!-- Trigger -->
+      <div
+      class="breadcrumb-trigger"
+      role="button"
+      tabindex="0"
+      @click="toggleOpen"
+      @keydown.space.prevent="toggleOpen"
+      @keydown.enter.prevent="toggleOpen"
+      :aria-expanded="isOpen.toString()"
+      aria-label="Breadcrumb öffnen"
+      >
         <svg
           xmlns="http://www.w3.org/2000/svg"
           viewBox="0 0 576 512"
@@ -20,7 +30,7 @@
         </svg>
       </div>
 
-      <!-- Breadcrumbs selbst (ein- und ausklappbar) -->
+      <!-- Breadcrumbs -->
       <ul :class="{ open: isOpen, closed: !isOpen }">
         <li
           v-for="(crumb, index) in breadcrumbs"
@@ -30,19 +40,33 @@
             v-if="index < breadcrumbs.length - 1"
             :to="crumb.to"
             :title="crumb.labelFull"
-          >{{ crumb.label }}
+          >
+            {{ crumb.label }}
           </router-link>
-          <span v-else :title="crumb.labelFull"><span v-if="breadcrumbs.length > 1" class="between">›</span>{{ crumb.label }}</span>
+          <span v-else :title="crumb.labelFull">
+            <span v-if="breadcrumbs.length > 1" class="between">›</span>
+            {{ crumb.label }}
+          </span>
+        </li>
+        <li>
+          <div
+          class="close-btn"
+          role="button"
+          tabindex="0"
+          @click="isOpen = false"
+          @keydown.space.prevent="isOpen = false"
+          @keydown.enter.prevent="isOpen = false"
+          aria-label="Breadcrumb schließen"
+          title="Schließen"
+          ></div>
         </li>
-        <li class="close-btn" @click="isOpen = false" title="Schließen"></li>
       </ul>
     </div>
   </nav>
 </template>
 
-
 <script setup lang="ts">
-import { computed, ref, watch } from 'vue'
+import { ref, computed, onMounted, onBeforeUnmount, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useRoute } from 'vue-router'
 import { i18nPages } from '~/i18n/i18n-pages'
@@ -54,11 +78,30 @@ interface Breadcrumb {
 }
 
 const isOpen = ref(false)
+const route = useRoute()
+const { locale, t } = useI18n()
 
 function toggleOpen() {
   isOpen.value = !isOpen.value
 }
 
+function onKeydown(e: KeyboardEvent) {
+  if (e.key === 'Escape') {
+    isOpen.value = false
+  }
+}
+
+onMounted(() => {
+  window.addEventListener('keydown', onKeydown)
+})
+onBeforeUnmount(() => {
+  window.removeEventListener('keydown', onKeydown)
+})
+
+watch(() => route.fullPath, () => {
+  isOpen.value = false
+})
+
 function formatLabel(segment: string): { label: string; labelFull: string } {
   const labelFull = segment.charAt(0).toUpperCase() + segment.slice(1).replace(/-/g, ' ')
   let label = labelFull
@@ -69,15 +112,9 @@ function formatLabel(segment: string): { label: string; labelFull: string } {
 }
 
 function buildUrl(loc: string, path: string): string {
-  if (loc === 'de') {
-    return path.startsWith('/') ? path : '/' + path
-  }
-  return `/${loc}${path.startsWith('/') ? path : '/' + path}`
+  return loc === 'de' ? '/' + path.replace(/^\//, '') : `/${loc}/${path.replace(/^\//, '')}`
 }
 
-const route = useRoute()
-const { locale, t } = useI18n()
-
 const breadcrumbs = computed<Breadcrumb[]>(() => {
   const loc = locale.value
   const pathWithoutLang = route.path.replace(`/${loc}`, '')
@@ -86,61 +123,32 @@ const breadcrumbs = computed<Breadcrumb[]>(() => {
   if (segments.length === 2 && segments[0] === 'projekt') {
     const referencesPath = i18nPages.references?.[loc] || '/references'
     const referencesLabel = t('references') || 'References'
-
-    const first = {
-      label: referencesLabel,
-      labelFull: referencesLabel,
-      to: buildUrl(loc, referencesPath)
-    }
-
-    const { label, labelFull } = formatLabel(segments[1])
-    const second = {
-      label,
-      labelFull,
-      to: route.path
-    }
-
-    return [first, second]
+    return [
+      { label: referencesLabel, labelFull: referencesLabel, to: buildUrl(loc, referencesPath) },
+      { ...formatLabel(segments[1]), to: route.path }
+    ]
   }
 
   if (segments.length === 2 && segments[0] === 'artikel') {
     const magazinePath = i18nPages.magazin?.[loc] || '/magazin'
     const magazineLabel = t('magazin') || 'Magazin'
-
-    const first = {
-      label: magazineLabel,
-      labelFull: magazineLabel,
-      to: buildUrl(loc, magazinePath)
-    }
-
-    const { label, labelFull } = formatLabel(segments[1])
-    const second = {
-      label,
-      labelFull,
-      to: route.path
-    }
-
-    return [first, second]
+    return [
+      { label: magazineLabel, labelFull: magazineLabel, to: buildUrl(loc, magazinePath) },
+      { ...formatLabel(segments[1]), to: route.path }
+    ]
   }
 
   let path = ''
   return segments.map(segment => {
     path += '/' + segment
     const { label, labelFull } = formatLabel(segment)
-    return {
-      label,
-      labelFull,
-      to: buildUrl(loc, path)
-    }
+    return { label, labelFull, to: buildUrl(loc, path) }
   })
 })
-
-watch(() => route.fullPath, () => {
-  isOpen.value = false
-})
 </script>
 
-<style lang="sass" scoped>
+
+<style lang="sass">
 .breadcrumbs
   position: fixed
   top: 12vh
@@ -165,14 +173,17 @@ watch(() => route.fullPath, () => {
       justify-content: center
       width: 1.8rem
       height: 1.8rem
+      background: none
+      border: none
+      margin: 0 0 0 .5rem
 
       svg
-        width: 1rem
-        height: 1rem
-        transform: translateX(10px)
+        width: 1rem !important 
+        height: 1rem !important 
+        display: inline-block
 
         path
-          fill: darken($lightgrey, 20%)
+          fill: darken($lightgrey, 30%) !important
 
         &:hover path
           fill: darken($lightgrey, 30%)
@@ -224,6 +235,8 @@ watch(() => route.fullPath, () => {
         border-radius: 50%
         position: relative
         margin: .2rem .5rem 0 1rem
+        border: none
+        text-transform: none
 
         &::before
           position: absolute
diff --git a/components/ContactForm.vue b/components/ContactForm.vue
index 895b947..4b54f27 100644
--- a/components/ContactForm.vue
+++ b/components/ContactForm.vue
@@ -7,13 +7,15 @@
       aria-labelledby="controlIcon"
       role="dialog"
     >
-      <svg
-        id="controlIcon"
-        tabindex="0"
-        role="button"
-        aria-label="Toggle contact form"
-        @click="toggleContactBubble"
-      >
+    <svg
+      id="controlIcon"
+      tabindex="0"
+      role="button"
+      aria-label="Toggle contact form"
+      @click="toggleContactBubble"
+      @keydown.space.prevent="toggleContactBubble"
+      @keydown.enter.prevent="toggleContactBubble"
+    >
         <use :xlink:href="`/assets/icons/collection.svg#${isContactBubbleOpen ? 'times' : 'talk'}`" />
       </svg>
   
@@ -77,6 +79,7 @@
                     class="form-control"
                     type="text"
                     name="name"
+                    ref="firstInput"
                     required
                     autocomplete="name"
                     :aria-invalid="!!errors.name"
@@ -188,10 +191,10 @@
 
 <script setup lang="ts">
 import { useMainStore } from '@/stores/main';
-import { ref, reactive, computed } from 'vue';
 import { storeToRefs } from 'pinia';
 import { useI18n } from 'vue-i18n';
 
+const firstInput = ref<HTMLInputElement | null>(null);
 
 // i18n Setup
 const { t } = useI18n();
@@ -291,6 +294,30 @@ const resetForm = () => {
   errors.email = null;
   errors.phone = null;
 };
+
+// ESC & Fokusmanagement
+const handleKeydown = (e: KeyboardEvent) => {
+  if (e.key === 'Escape' && isContactBubbleOpen.value) {
+    toggleContactBubble();
+  }
+};
+
+// Füge den EventListener beim Mount hinzu
+onMounted(() => {
+  window.addEventListener('keydown', handleKeydown);
+});
+
+onBeforeUnmount(() => {
+  window.removeEventListener('keydown', handleKeydown);
+});
+
+// Wenn die Bubble geöffnet wird: Fokus setzen
+watch(isContactBubbleOpen, async (newVal) => {
+  if (newVal) {
+    await nextTick()
+    firstInput.value?.focus()
+  }
+})  
 </script>
 
 
diff --git a/components/FAQArea.vue b/components/FAQArea.vue
index 3db59b2..917c335 100644
--- a/components/FAQArea.vue
+++ b/components/FAQArea.vue
@@ -46,6 +46,34 @@ const accordionItems = computed(() =>
 )
 
 const toggleContactBubble = () => mainStore.toggleContactBubble()
+
+// FAQ JSON-LD
+
+useHead(() => {
+  if (!accordionItems.value.length) return {}
+
+  const faqJsonLd = {
+    "@context": "https://schema.org",
+    "@type": "FAQPage",
+    "mainEntity": accordionItems.value.map(item => ({
+      "@type": "Question",
+      "name": item.title,
+      "acceptedAnswer": {
+        "@type": "Answer",
+        "text": item.html.replace(/<[^>]*>?/gm, '') // HTML-Tags entfernen
+      }
+    }))
+  }
+
+  return {
+    script: [
+      {
+        type: 'application/ld+json',
+        children: JSON.stringify(faqJsonLd)
+      }
+    ]
+  }
+})
 </script>
 
 
diff --git a/components/SideBarNaviSlider.vue b/components/SideBarNaviSlider.vue
index 2f436eb..971de07 100644
--- a/components/SideBarNaviSlider.vue
+++ b/components/SideBarNaviSlider.vue
@@ -42,27 +42,27 @@ const props = defineProps({
   
 <style lang="sass">
 .sideBarNaviSlider
-    position: fixed
-    background-color: rgba($yellow, .8)
-    color: white
-    text-transform: uppercase
-    font-size: 1rem !important
-    letter-spacing: .05rem
-    top: 40vh
-    right: -80px  // Startposition außerhalb des Bildschirms
-    padding: 1.2rem .4rem 1.6rem .3rem
-    writing-mode: vertical-lr
-    transform: rotate(180deg)
-    border-bottom-right-radius: 1rem
-    border-top-right-radius: 1rem
-    cursor: pointer
-    transition: right 0.6s ease-out, transform .8s
-    z-index: 10
+  position: fixed
+  background-color: rgba($yellow, .8)
+  color: white
+  text-transform: uppercase
+  font-size: 1rem !important
+  letter-spacing: .05rem
+  top: 40vh
+  right: -80px  // Startposition außerhalb des Bildschirms
+  padding: 1.2rem .4rem 1.6rem .3rem
+  writing-mode: vertical-lr
+  transform: rotate(180deg)
+  border-bottom-right-radius: 1rem
+  border-top-right-radius: 1rem
+  cursor: pointer
+  transition: right 0.6s ease-out, transform .8s
+  z-index: 10
 
-    &.slide-in
-        right: 0  // Fährt an die finale Position
+  &.slide-in
+      right: 0  // Fährt an die finale Position
 
-    &:hover
-      transform: rotate(180deg) scale(1.1)
+  &:hover
+    transform: rotate(180deg) scale(1.1)
 </style>
   
\ No newline at end of file
diff --git a/components/template/NavBar.vue b/components/template/NavBar.vue
index b710485..e2622a5 100644
--- a/components/template/NavBar.vue
+++ b/components/template/NavBar.vue
@@ -1,59 +1,95 @@
 <template>
-    <nav class="mainNav" :class="[
-    isMenuOpen ? 'active' : '',
-    screenWidth < 1350 ? 'mobile-nav' : 'desk-nav',
-    scrollPosition > 50 ? 'scrolled' : ''
-  ]">
-      <!-- Burger Icon nur bei Mobile sichtbar -->
-      <div class="burger" @click="toggleMenu" v-if="screenWidth < 1350" :class="{ open: isMenuOpen }">
-        <span></span>
-        <span></span>
-      </div>
-  
-      <!-- Navigation -->
-      <ul
-        :class="[
-            screenWidth < 1350 && isMenuOpen ? 'mobile-menu active' :
-            screenWidth < 1350 ? 'mobile-menu' : 'desk-menu']"    
-            v-show="screenWidth >= 1350 || isMenuOpen"    
+  <nav
+    class="mainNav"
+    :class="[
+      isMenuOpen ? 'active' : '',
+      screenWidth < 1350 ? 'mobile-nav' : 'desk-nav',
+      scrollPosition > 50 ? 'scrolled' : ''
+    ]"
+    aria-label="Hauptnavigation"
+  >
+    <!-- Burger Icon als Button -->
+    <button
+      class="burger"
+      @click="toggleMenu"
+      v-if="screenWidth < 1350"
+      :aria-expanded="isMenuOpen"
+      aria-controls="main-navigation"
+      :class="{ open: isMenuOpen }"
+      type="button"
+    >
+      <span class="visually-hidden">Menü öffnen</span>
+      <span></span>
+      <span></span>
+    </button>
+
+    <!-- Navigation -->
+    <ul
+      :id="'main-navigation'"
+      :class="[
+        screenWidth < 1350 && isMenuOpen ? 'mobile-menu active' :
+        screenWidth < 1350 ? 'mobile-menu' : 'desk-menu'
+      ]"
+      v-show="screenWidth >= 1350 || isMenuOpen"
+    >
+      <li
+        v-for="link in navigationLinks"
+        :key="link.label"
+        class="nav-item"
+        @mouseenter="screenWidth >= 1350 && link.subNav && showSubNav(link.label)"
+        @mouseleave="screenWidth >= 1350 && link.subNav && hideSubNav(link.label)"
       >
-        <li
-          v-for="link in navigationLinks"
-          :key="link.label"
-          class="nav-item"
-          @mouseenter="screenWidth >= 1350 && link.subNav && showSubNav(link.label)"
-          @mouseleave="screenWidth >= 1350 && link.subNav && hideSubNav(link.label)"
-          
-        >
-          <!-- Mit SubNav -->
-          <template v-if="link.subNav">
-            <div @click="screenWidth < 1350 ? toggleMobileSubNav(link.label) : null">
-              {{ $t(link.label) }}
-              <span class="arrow" :class="{ open: (screenWidth < 1350 ? isMobileSubNavOpen : isSubNavOpen) === link.label }"></span>
-            </div>
-  
-            <ul
-              class="submenu"
-              :class="{ open: isActiveSubNav(link.label) }"
-            >
-              <li v-for="sublink in link.subNav" :key="sublink.label">
-                <NuxtLinkLocale :to="sublink.routeKey" @click.native="handleMobileClose">
-                  {{ $t(sublink.label) }}
-                </NuxtLinkLocale>
-              </li>
-            </ul>
-          </template>
-  
-          <!-- Ohne SubNav -->
-          <template v-else>
-            <NuxtLinkLocale :to="link.routeKey" @click.native="handleMobileClose">
-              {{ $t(link.label) }}
-            </NuxtLinkLocale>
-          </template>
-        </li>
-      </ul>
-    </nav>
-  </template>
+        <!-- Mit SubNav -->
+        <template v-if="link.subNav">
+          <button
+            v-if="screenWidth < 1350"
+            class="subnav-toggle"
+            @click="toggleMobileSubNav(link.label)"
+            :aria-expanded="isActiveSubNav(link.label)"
+            :aria-controls="`submenu-${link.label}`"
+            type="button"
+          >
+            {{ $t(link.label) }}
+            <span class="arrow" :class="{ open: isActiveSubNav(link.label) }"></span>
+            <span class="visually-hidden">
+              {{ isActiveSubNav(link.label) ? 'Untermenü schließen' : 'Untermenü öffnen' }}
+            </span>
+          </button>
+          <div v-else>
+            {{ $t(link.label) }}
+            <span class="arrow" :class="{ open: isSubNavOpen === link.label }"></span>
+          </div>
+
+          <ul
+            :id="`submenu-${link.label}`"
+            class="submenu"
+            :class="{ open: isActiveSubNav(link.label) }"
+          >
+            <li v-for="sublink in link.subNav" :key="sublink.label">
+              <NuxtLinkLocale
+                :to="sublink.routeKey"
+                @click.native="handleMobileClose"
+              >
+                {{ $t(sublink.label) }}
+              </NuxtLinkLocale>
+            </li>
+          </ul>
+        </template>
+
+        <!-- Ohne SubNav -->
+        <template v-else>
+          <NuxtLinkLocale
+            :to="link.routeKey"
+            @click.native="handleMobileClose"
+          >
+            {{ $t(link.label) }}
+          </NuxtLinkLocale>
+        </template>
+      </li>
+    </ul>
+  </nav>
+</template>
+
   
   
   <script setup>
@@ -154,6 +190,15 @@
     right: 0
     background-color: transparent
 
+  .visually-hidden
+    position: absolute
+    width: 1px
+    height: 1px
+    padding: 0
+    margin: -1px
+    overflow: hidden
+    clip: rect(0, 0, 0, 0)
+    border: 0
 
   .burger
     width: 4rem
@@ -184,9 +229,9 @@
         border: 1px solid transparent
         span
             height: 3px
-            &:nth-child(1)
+            &:nth-child(2)    
                 transform: rotate(45deg) translate(2px, 5px)
-            &:nth-child(2)
+            &:nth-child(3)
                 transform: rotate(-45deg) translate(3px, -6px)
  
   .nav-item
@@ -257,9 +302,9 @@
   .submenu
     position: absolute
     top: 100%
-    left: -50%
+    left: -30%
     width: 200%
-    background-image: linear-gradient(to bottom, rgba(#fff, 0.1) 0%, rgba(#fff, 0.9) 8%, rgba(#fff, .98) 100%)
+    background-image: linear-gradient(to bottom, rgba(#fff, 0.1) 0%, rgba(#fff, 0.9) 18%, rgba(#fff, .98) 100%)
     border-bottom-right-radius: 1rem
     border-bottom-left-radius: 1rem
     list-style: none
@@ -294,6 +339,13 @@
     cursor: pointer
     font-size: 1.25rem
     color: white 
+    .subnav-toggle
+      background-color: transparent
+      border: none
+      color: white
+      font-size: 1.25rem
+      text-transform: uppercase 
+      margin-top: -6px
     &::before
         content: ''
         width: .7rem
diff --git a/composables/useDeferredTabFocus.ts b/composables/useDeferredTabFocus.ts
new file mode 100644
index 0000000..cd76dc7
--- /dev/null
+++ b/composables/useDeferredTabFocus.ts
@@ -0,0 +1,45 @@
+import { ref, onMounted, onBeforeUnmount } from 'vue'
+
+export function useDeferredTabFocus() {
+  const focusableElements = ref<HTMLElement[]>([])
+
+  function register(el: HTMLElement | null) {
+    if (el) {
+      el.setAttribute('tabindex', '-1')
+      focusableElements.value.push(el)
+    }
+  }
+
+  function activateFocus() {
+    focusableElements.value.forEach(el => el.removeAttribute('tabindex'))
+    document.body.classList.add('user-is-tabbing') // <– das hier neu
+    window.removeEventListener('keydown', onKeyDown)
+  }
+ 
+
+  function onKeyDown(e: KeyboardEvent) {
+    if (e.key === 'Tab') {
+      activateFocus()
+    }
+  }
+
+  function onMouseDown() {
+    document.body.classList.remove('user-is-tabbing')
+    window.addEventListener('keydown', onKeyDown) // optional: erlaubt Wiederaktivierung nach Maus
+  }
+  
+
+  onMounted(() => {
+    window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('mousedown', onMouseDown)
+  })
+  
+  onBeforeUnmount(() => {
+    window.removeEventListener('keydown', onKeyDown)
+    window.removeEventListener('mousedown', onMouseDown)
+  })
+
+  return {
+    register
+  }
+}
diff --git a/layouts/default.vue b/layouts/default.vue
index 2705f8f..1e2638f 100644
--- a/layouts/default.vue
+++ b/layouts/default.vue
@@ -17,6 +17,10 @@
   </template>
   
   <script setup>
+
+  import { useDeferredTabFocus } from '@/composables/useDeferredTabFocus'
+  useDeferredTabFocus()
+
   import { useMainStore } from '@/stores/main'
   const mainStore = useMainStore()
   import { usePageMeta } from '~/composables/usePageMeta'