diff --git a/app/assets/styles/button.css b/app/assets/styles/button.css
index c247d2c..ebc7ca1 100755
--- a/app/assets/styles/button.css
+++ b/app/assets/styles/button.css
@@ -4,6 +4,7 @@
     --color: var(--color-white);
     --background-hover: var(--color-main-dark);
 
+    position: relative;
     display: flex;
     justify-content: center;
     align-items: center;
diff --git a/app/assets/styles/buttonGroup.css b/app/assets/styles/buttonGroup.css
new file mode 100644
index 0000000..9c47667
--- /dev/null
+++ b/app/assets/styles/buttonGroup.css
@@ -0,0 +1,32 @@
+.ButtonGroup {
+    display: flex;
+
+    & button {
+        --color: var(--color-white-transparent);
+        --background: var(--color-main);
+        all: unset;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        gap: .5rem;
+        padding: .5rem;
+        flex-grow: 1;
+        background: var(--background);
+        color: var(--color);
+        cursor: pointer;
+        transition: var(--transition-default);
+
+        &.active {
+            --color: var(--color-white);
+            --background: var(--color-main-dark);
+        }
+
+        &:first-child {
+            border-radius: var(--radius-default) 0 0 var(--radius-default);
+        }
+
+        &:last-child {
+            border-radius: 0 var(--radius-default) var(--radius-default) 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/assets/styles/footer.css b/app/assets/styles/footer.css
new file mode 100644
index 0000000..23c47e5
--- /dev/null
+++ b/app/assets/styles/footer.css
@@ -0,0 +1,40 @@
+.Footer {
+    background: var(--color-main-dark);
+    padding: 1rem;
+
+    & h4 {
+        color: var(--color-white);
+        text-align: center;
+        margin-bottom: 1rem;
+    }
+
+    & .bottom {
+        display: flex;
+        gap: 1rem;
+        justify-content: space-between;
+        color: var(--color-white-transparent);
+    }
+
+    & .socials {
+        font-size: 1.5rem;
+        justify-content: center;
+        margin-bottom: 2rem;
+    }
+
+    & .data-links {
+        justify-content: flex-end;
+        font-size: .8rem;
+    }
+
+    & ul {
+        list-style: none;
+        display: flex;
+        align-items: center;
+        gap: 1rem;
+
+        & a {
+            color: var(--color-white);
+            text-decoration: none;
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/assets/styles/general.css b/app/assets/styles/general.css
index ad3b46c..594a8d1 100755
--- a/app/assets/styles/general.css
+++ b/app/assets/styles/general.css
@@ -4,16 +4,21 @@
     --transition-default: 150ms;
 
     --color-white: white;
+    --color-white-transparent: rgba(255, 255, 255, 0.67);
     --color-red: #cc0001;
     --color-blue-light: #61a7fd;
     --color-blue: #2e86de;
     --color-blue-dark: #1b4b7f;
     --color-grey: #c7c7c7;
 
+    --color-orange: #DE9C2F;
+
     --color-main: var(--color-blue);
     --color-main-light: var(--color-blue-light);
     --color-main-dark: var(--color-blue-dark);
 
+    --color-accent: var(--color-orange);
+
     --box-shadow-upper: 0 -3px 6px rgba(0,0,0,0.16), 0 -3px 6px rgba(0,0,0,0.23);
     --box-shadow-z2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
     --box-shadow-inset: inset 0 3px 6px rgba(0,0,0,0.16), inset 0 3px 6px rgba(0,0,0,0.23);
@@ -32,6 +37,43 @@ body {
     font-family: sans-serif;
 }
 
+.dot {
+    --size: 10px;
+    width: var(--size);
+    height: var(--size);
+    top: 5px;
+    right: 25%;
+    border-radius: 50%;
+    background-color: var(--color-accent);
+    display: inline-block;
+    margin-right: 0.5rem;
+    position: absolute;
+    box-shadow: var(--box-shadow-z2);
+    scale: 0;
+    transition: var(--transition-default);
+
+    &.visible {
+        scale: 1;
+        animation: pulse 1s infinite;
+    }
+}
+
+@keyframes pulse {
+    0% {
+        transform: scale(0.95);
+        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
+    }
+    70% {
+        transform: scale(1);
+        box-shadow: 0 0 0 10px rgba(255, 255, 255, 0);
+    }
+
+    100% {
+        transform: scale(0.95);
+        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
+    }
+}
+
 .card {
     overflow: hidden;
     border-radius: var(--radius-default);
@@ -44,6 +86,10 @@ body {
     min-height: 100dvh;
 }
 
+.filter-bar {
+    margin-bottom: 1rem;
+}
+
 .pc-wrapper {
     gap: 1rem;
     margin-bottom: 1rem;
diff --git a/app/components/Pp/ButtonGroup.vue b/app/components/Pp/ButtonGroup.vue
new file mode 100644
index 0000000..322b6f7
--- /dev/null
+++ b/app/components/Pp/ButtonGroup.vue
@@ -0,0 +1,25 @@
+<template>
+  <div class="ButtonGroup">
+    <button
+      v-for="(button, index) in buttons"
+      @click="click(index)"
+      :class="{ 'active': button.active}"
+    >
+      <Icon :name="button.icon" mode="svg" />
+      <span>{{ button.label }}</span>
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { Button } from '../../../shared/ButtonGroup'
+
+type Props = {
+  buttons: Button[]
+}
+
+defineProps<Props>()
+const emit = defineEmits(['click'])
+
+const click = (index : number) => emit('click', index)
+</script>
diff --git a/app/components/Pp/Footer.vue b/app/components/Pp/Footer.vue
index 324de62..4d57be6 100755
--- a/app/components/Pp/Footer.vue
+++ b/app/components/Pp/Footer.vue
@@ -1,7 +1,46 @@
 <template>
-  <div>THIS IS A FOOTER</div>
+  <footer class="Footer">
+    <h4>Socials</h4>
+    <ul class="socials">
+      <li v-for="social in socials">
+        <a :href="social.href" target="_blank">
+          <Icon :name="social.icon" mode="svg" />
+        </a>
+      </li>
+    </ul>
+    <div class="bottom">
+      <small>&copy; 2025 by webfussel</small>
+      <ul class="data-links">
+        <li v-for="dataLink in dataLinks">
+          <NuxtLink :to="dataLink.to">
+            {{ dataLink.label }}
+          </NuxtLink>
+        </li>
+      </ul>
+    </div>
+  </footer>
 </template>
 
 <script setup lang="ts">
+const socials = [
+  {
+    icon: 'simple-icons:kofi',
+    href: 'https://ko-fi.com/webfussel',
+  },
+  {
+    icon: 'simple-icons:forgejo',
+    href: 'https://git.webfussel.de/webfussel/propapier',
+  },
+]
 
+const dataLinks = [
+  {
+    label: 'Impressum',
+    to: '/imprint',
+  },
+  {
+    label: 'Datenschutz',
+    to: '/privacy',
+  }
+]
 </script>
diff --git a/app/components/Pp/Header.vue b/app/components/Pp/Header.vue
index 51dfeb6..acaabf8 100755
--- a/app/components/Pp/Header.vue
+++ b/app/components/Pp/Header.vue
@@ -1,11 +1,11 @@
 <template>
   <header class="Header">
     <strong><span>Pro</span>Papier</strong>
-    <label for="burger_nav_toggle">
+    <label for="burger_nav_toggle" v-if="available">
       <Icon name="solar:hamburger-menu-broken" size="2em" />
     </label>
-    <input type="checkbox" id="burger_nav_toggle" />
-    <nav class="flex-col">
+    <input type="checkbox" id="burger_nav_toggle" v-if="available" />
+    <nav class="flex-col" v-if="available">
       <label for="burger_nav_toggle">
         <Icon name="solar:close-circle-broken" />
       </label>
@@ -18,5 +18,5 @@
 </template>
 
 <script setup lang="ts">
-
+const available = false
 </script>
\ No newline at end of file
diff --git a/app/components/Pp/PriceCard.vue b/app/components/Pp/PriceCard.vue
index 2104633..0b495bb 100755
--- a/app/components/Pp/PriceCard.vue
+++ b/app/components/Pp/PriceCard.vue
@@ -53,7 +53,7 @@
         <Icon name="uil:trash" mode="svg" />
         Entfernen
       </PpButton>
-      <PpButton class="cta white">
+      <PpButton v-if="false" class="cta white">
         <Icon name="uil:qrcode-scan" mode="svg" />
         Scan
       </PpButton>
@@ -72,46 +72,44 @@ type Props = {
 const { card } = defineProps<Props>()
 const emit = defineEmits(['remove', 'update'])
 
-onMounted(() => {
-  calculate()
-  if (card.price) folded.value = true
-})
-
 const root = ref<HTMLElement>()
 const folded = ref<boolean>(false)
 const deleting = ref<boolean>(false)
 
-const ppr = ref(0)
-const pps = ref(0)
-const ppl = ref(0)
+const ppr = ref(card.ppr)
+const pps = ref(card.pps)
+const ppl = ref(card.ppl)
 
 const intl = Intl.NumberFormat('de-DE', {
   style: 'currency',
   currency: 'EUR',
 })
 
-const update = () => {
-  emit('update', card)
-}
-
 const calculate = () => {
   if (!card.price || !card.roles) return
   ppr.value = card.price / card.roles
 
-  if (!card.sheets) return
+  if (!card.sheets) {
+    update()
+    return
+  }
   pps.value = (ppr.value / card.sheets) * 10
 
-  if(!card.layers) return
+  if(!card.layers) {
+    update()
+    return
+  }
   ppl.value = (pps.value / card.layers) * 10
 
   update()
 }
 
-const deleteCard = async () => {
-  root.value?.addEventListener('transitionend', () => {
-    emit('remove')
-  })
+const update = () => emit('update', { ...card, ppr: ppr.value, pps: pps.value, ppl: ppl.value })
 
+const deleteCard = async () => {
+  root.value?.addEventListener('transitionend', () => emit('remove'))
   deleting.value = true
 }
+
+onMounted(() => folded.value = !!card.price)
 </script>
diff --git a/app/pages/index.vue b/app/pages/index.vue
index 8c7f550..cc1abb7 100755
--- a/app/pages/index.vue
+++ b/app/pages/index.vue
@@ -1,17 +1,32 @@
 <template>
   <section class="content flex-col">
-    <div class="pc-wrapper flex-col">
+    <aside class="filter-bar">
+      <PpButtonGroup
+        :buttons="filterButtons"
+        @click="sort"
+      />
+    </aside>
+    <div class="pc-wrapper flex-col" role="list">
       <PpPriceCard
         v-for="(card, index) in cards"
         :key="card.uuid"
         :deletable="cards.length > 1"
         :card="card"
-        @update="updateCard(card, index)"
+        @update="newCard => updateCard(newCard, index)"
         @remove="removeCard(card)"
       />
     </div>
   </section>
   <PpToolbar>
+    <PpButton class="mini-button text-white" @click="sort(currentSort)">
+      <Icon class="icon" name="uil:refresh" mode="svg" />
+      <span>Neu sortieren</span>
+      <span
+        class="dot"
+        :class="{ visible : isDirty}"
+        aria-hidden="true"
+      />
+    </PpButton>
     <PpButton class="mini-button text-white" @click="addCard">
       <Icon class="icon" name="uil:plus" mode="svg" />
       <span>Hinzufügen</span>
@@ -21,42 +36,95 @@
 
 <script setup lang="ts">
 import type { Card } from '../../shared/Card'
+import type { Button } from '../../shared/ButtonGroup'
 
-const createCard = (uuid : string) => ({
+const currentSort = ref(0)
+const isDirty = ref(false)
+
+const createCard = (uuid : string) : Card => ({
   uuid,
   name: '',
   price: 0,
   roles: 0,
   sheets: 0,
   layers: 0,
+  ppr: 0,
+  pps: 0,
+  ppl: 0,
 })
 
 const cards = useState('cards', () => [
   createCard(crypto.randomUUID()),
 ])
 
-onMounted(() => {
-  const fromStorage = JSON.parse(localStorage.getItem('cards') ?? '[]')
-  cards.value = fromStorage.length !== 0 ? fromStorage : cards.value
-})
-
 const addCard = () => {
-  cards.value.push(createCard(crypto.randomUUID()))
+  cards.value.unshift(createCard(crypto.randomUUID()))
+  isDirty.value = true
 }
 
 const removeCard = (card : Card) => {
   cards.value = cards.value.filter(element => element.uuid !== card.uuid)
+  isDirty.value = true
   updateLocalStorage()
 }
 
 const updateCard = (card : Card, index : number) => {
   cards.value[index] = card
+  isDirty.value = true
   updateLocalStorage()
 }
 
+
 const updateLocalStorage = () => {
   localStorage.setItem('cards', JSON.stringify(cards.value))
+  localStorage.setItem('sort', JSON.stringify(currentSort.value))
 }
 
-const sort = () => {}
+const filterButtons = ref<Button[]>([
+  {
+    label: 'Rollen',
+    icon: 'uil:toilet-paper',
+  },
+  {
+    label: 'Blatt',
+    icon: 'uil:file-landscape',
+  },
+  {
+    label: 'Lagen',
+    icon: 'uil:layer-group',
+  },
+])
+
+const sortBy = (key : 'ppr' | 'pps' | 'ppl') => {
+  cards.value.sort((a : Card, b : Card) => a[key] - b[key])
+}
+
+const sort = (index : number) => {
+  currentSort.value = index
+  filterButtons.value.forEach(button => { button.active = false })
+  filterButtons.value[index]!.active = true
+
+  switch (index) {
+    case 0:
+      sortBy('ppr')
+      break
+    case 1:
+      sortBy('pps')
+      break
+    case 2:
+      sortBy('ppl')
+      break
+  }
+
+  updateLocalStorage()
+  isDirty.value = false
+}
+
+onMounted(() => {
+  const cardsFromStorage = JSON.parse(localStorage.getItem('cards') ?? '[]')
+  cards.value = cardsFromStorage.length !== 0 ? cardsFromStorage : cards.value
+  const sortFromStorage = +JSON.parse(localStorage.getItem('sort') ?? '0')
+  sort(sortFromStorage)
+  filterButtons.value[sortFromStorage]!.active = true
+})
 </script>
diff --git a/nuxt.config.ts b/nuxt.config.ts
index 06c6ad1..cef3714 100755
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -13,7 +13,9 @@ export default defineNuxtConfig({
   css : [
     './app/assets/styles/general.css',
     './app/assets/styles/header.css',
+    './app/assets/styles/footer.css',
     './app/assets/styles/button.css',
+    './app/assets/styles/buttonGroup.css',
     './app/assets/styles/priceCard.css',
     './app/assets/styles/formInput.css',
     './app/assets/styles/toolbar.css',
diff --git a/shared/ButtonGroup.ts b/shared/ButtonGroup.ts
new file mode 100644
index 0000000..1278337
--- /dev/null
+++ b/shared/ButtonGroup.ts
@@ -0,0 +1,5 @@
+export type Button = {
+  label : string
+  icon : string
+  active ?: boolean
+}
\ No newline at end of file
diff --git a/shared/Card.ts b/shared/Card.ts
index 98b555a..4d84b22 100644
--- a/shared/Card.ts
+++ b/shared/Card.ts
@@ -5,4 +5,7 @@ export type Card = {
   roles: number
   sheets: number
   layers: number
+  ppr: number
+  pps: number
+  ppl: number
 }
\ No newline at end of file