diff --git a/modules/shared/auth/ui/home.php b/modules/shared/auth/ui/home.php
index 9284429..f83710c 100644
--- a/modules/shared/auth/ui/home.php
+++ b/modules/shared/auth/ui/home.php
@@ -1205,13 +1205,17 @@ function render_auth_home_page(array $user, array $otcProducts = [], array $otcM
     echo "  if (!contentRoot || !definitionContent || !drawer || !readCard || !card || !form || !editButton || definitionContent.dataset.marketDefinitionsBound === 'true') { return; }";
     echo "  definitionContent.dataset.marketDefinitionsBound = 'true';";
     echo "  let activeMarket = null;";
+    echo "  const prepareMarketDefinitionDeleteCard = () => { const existingCard = drawer.querySelector('[data-market-definition-card]'); if (!existingCard || drawer.querySelector('[data-market-definition-delete-id]')) { return; } const stage = document.createElement('div'); stage.className = 'sg-delete-confirmation-pattern__stage sg-delete-confirmation-pattern__host'; stage.dataset.pattern = 'overlay-card'; stage.dataset.dialogOpen = 'false'; const target = document.createElement('div'); target.className = 'sg-delete-confirmation-pattern__target'; target.dataset.sharedEditableActionCard = ''; target.dataset.sharedEditableDeleteToken = 'DELETE'; target.dataset.marketDefinitionDeleteId = ''; target.dataset.marketDefinitionCard = ''; const titleCard = document.createElement('article'); titleCard.className = 'sg-card sg-card--content-card market-delete-confirmation-card'; const header = document.createElement('header'); header.className = 'sg-card-segment sg-card-segment--header sg-card-segment--gray sg-object-card__header'; const heading = document.createElement('h2'); heading.className = 'sg-heading-h2 market-delete-confirmation-card__title'; heading.dataset.marketDefinitionReadTitle = ''; heading.dataset.marketDefinitionDrawerTitle = ''; heading.textContent = 'Markt'; const actions = document.createElement('div'); actions.className = 'sg-component-row'; const deleteButton = document.createElement('button'); deleteButton.className = 'sg-interaction-element sg-button sg-button--warning'; deleteButton.type = 'button'; deleteButton.dataset.sharedEditableCardDelete = ''; deleteButton.dataset.marketDefinitionDelete = ''; deleteButton.textContent = 'Löschen'; actions.append(deleteButton); header.append(heading, actions); titleCard.append(header); existingCard.querySelector('[data-market-definition-read-title]')?.remove(); existingCard.removeAttribute('data-shared-editable-action-card'); const confirmation = document.createElement('article'); confirmation.className = 'sg-card sg-card--overlay-host sg-delete-confirmation-pattern__floating-card'; confirmation.setAttribute('aria-label', 'Löschbestätigung'); confirmation.setAttribute('role', 'dialog'); confirmation.setAttribute('aria-modal', 'true'); confirmation.dataset.overlayDialog = 'delete'; confirmation.dataset.sharedEditableCardDeleteConfirmation = ''; confirmation.hidden = true; confirmation.innerHTML = '<div class=\"sg-card-segment sg-card-segment--body sg-delete-confirmation-pattern__body\"><p class=\"sg-body sg-delete-confirmation-pattern__text\"><strong>Möchtest du diesen Markt wirklich löschen?</strong></p><p class=\"sg-body sg-delete-confirmation-pattern__text\">Du kannst das nicht rückgängig machen. Bestätige durch Eingabe von <span class=\"sg-delete-confirmation-pattern__code\">DELETE</span>.</p><label class=\"sg-labeled-input-row sg-delete-confirmation-pattern__input-row\"><span class=\"sg-label\">Bestätigung</span><input class=\"sg-interaction-element sg-input-single-line sg-input-single-line--inactive-selectable sg-form-inactive-selectable\" type=\"text\" placeholder=\"DELETE\" aria-label=\"Löschbestätigung durch DELETE\" data-shared-editable-card-delete-input></label><p class=\"sg-body\" data-market-definition-delete-status aria-live=\"polite\"></p><div class=\"sg-delete-confirmation-pattern__actions\"><button class=\"sg-interaction-element sg-button sg-button--active\" type=\"button\" data-shared-editable-card-delete-cancel>Abbrechen</button><button class=\"sg-interaction-element sg-button sg-button--process sg-button--process-inactive\" type=\"button\" disabled aria-disabled=\"true\" data-shared-editable-card-delete-submit data-market-definition-delete-submit>Löschen</button></div></div>'; target.append(titleCard, existingCard, confirmation); stage.append(target); drawer.querySelector('[data-market-definition-drawer-content]')?.append(stage); };";
+    echo "  prepareMarketDefinitionDeleteCard();";
     echo "  const sharedCard = drawer.querySelector('[data-market-definition-card]');";
     echo "  if (window.SharedEditableActionCard) { window.SharedEditableActionCard.init(definitionContent); }";
     echo "  const setDrawerState = (open) => { drawer.dataset.open = String(open); drawer.setAttribute('aria-hidden', String(!open)); if (activeMarket?.trigger) { activeMarket.trigger.setAttribute('aria-expanded', String(open)); } const backdrop = definitionContent.querySelector('[data-market-definition-drawer-backdrop]'); if (backdrop) { backdrop.dataset.open = String(open); backdrop.setAttribute('aria-hidden', String(!open)); } document.body.classList.toggle('sg-card-list-page-drawer-open', open); };";
     echo "  const resetForm = () => { form.reset(); const status = form.querySelector('[data-market-definition-status]'); if (status) { status.textContent = ''; } };";
-    echo "  const closeDrawer = () => { resetForm(); if (sharedCard && window.SharedEditableActionCard) { window.SharedEditableActionCard.setEditMode(sharedCard, false); } activeMarket = null; setDrawerState(false); };";
+    echo "  const closeDrawer = () => { resetForm(); if (sharedCard && window.SharedEditableActionCard) { window.SharedEditableActionCard.resetDeleteConfirmation(sharedCard); window.SharedEditableActionCard.setEditMode(sharedCard, false); } activeMarket = null; setDrawerState(false); };";
+    echo "  const deleteMarketDefinition = async (submit) => { if (submit.disabled || !activeMarket?.id) { return; } const card = submit.closest('[data-shared-editable-action-card]'); const input = card?.querySelector('[data-shared-editable-card-delete-input]'); const status = card?.querySelector('[data-market-definition-delete-status]'); if (!card || !input || input.value !== 'DELETE') { return; } if (status) { status.textContent = 'Löschen läuft …'; } submit.disabled = true; submit.setAttribute('aria-disabled', 'true'); try { const response = await fetch('/api/market-definition.php', { method: 'POST', credentials: 'same-origin', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': definitionContent.dataset.marketDefinitionsCsrfToken || '' }, body: JSON.stringify({ action: 'delete', id: activeMarket.id, confirmation: input.value }) }); const result = await response.json(); if (!response.ok || !result.ok) { throw new Error(result.error || 'Löschen fehlgeschlagen.'); } const row = activeMarket.trigger.closest('[data-market-definition-row]'); const statusCell = row?.querySelectorAll('[role=\"cell\"]')[4]; if (statusCell) { statusCell.textContent = 'Archiviert'; } closeDrawer(); } catch (error) { if (status) { status.textContent = error instanceof Error ? error.message : 'Löschen fehlgeschlagen.'; } submit.disabled = false; submit.setAttribute('aria-disabled', 'false'); } };";
     echo "  const showReadCard = (trigger) => { activeMarket = { id: trigger.dataset.marketDefinitionId || '', trigger }; drawer.querySelector('[data-market-definition-read-title]').textContent = trigger.dataset.marketDefinitionName || 'Markt'; readCard.querySelector('[data-market-definition-read-name]').textContent = trigger.dataset.marketDefinitionName || 'Nicht hinterlegt'; readCard.querySelector('[data-market-definition-read-category]').textContent = trigger.dataset.marketDefinitionCategoryName || 'Nicht hinterlegt'; readCard.querySelector('[data-market-definition-read-website]').textContent = trigger.dataset.marketDefinitionWebsite || 'Nicht hinterlegt'; const title = form.querySelector('[data-market-definition-form-title]'); if (title) { title.textContent = 'Markt bearbeiten'; } const name = form.querySelector('[data-market-definition-name]'); const category = form.querySelector('[data-market-definition-category]'); const website = form.querySelector('[data-market-definition-website]'); if (name) { name.value = trigger.dataset.marketDefinitionName || ''; } if (category) { category.value = trigger.dataset.marketDefinitionCategoryId || ''; } if (website) { website.value = trigger.dataset.marketDefinitionWebsite === 'Nicht hinterlegt' ? '' : (trigger.dataset.marketDefinitionWebsite || ''); } if (sharedCard && window.SharedEditableActionCard) { window.SharedEditableActionCard.setEditMode(sharedCard, false); } setDrawerState(true); };";
     echo "  definitionContent.addEventListener('click', (event) => { const trigger = event.target.closest('[data-market-definition-open]'); if (!trigger || !definitionContent.contains(trigger)) { return; } event.preventDefault(); event.stopPropagation(); showReadCard(trigger); }, true);";
+    echo "  definitionContent.addEventListener('click', (event) => { const deleteSubmit = event.target.closest('[data-market-definition-delete-submit]'); if (deleteSubmit) { void deleteMarketDefinition(deleteSubmit); return; } const trigger = event.target.closest('[data-market-definition-open]'); if (trigger) { const deleteButton = drawer.querySelector('[data-market-definition-delete]'); if (deleteButton) { deleteButton.hidden = false; } } if (event.target.closest('[data-market-definition-create]')) { const deleteButton = drawer.querySelector('[data-market-definition-delete]'); if (deleteButton) { deleteButton.hidden = true; } } });";
     echo "  const openEditCard = () => { if (!activeMarket) { return; } const title = form.querySelector('[data-market-definition-form-title]'); if (title) { title.textContent = 'Markt bearbeiten'; } const name = form.querySelector('[data-market-definition-name]'); const category = form.querySelector('[data-market-definition-category]'); const website = form.querySelector('[data-market-definition-website]'); if (name) { name.value = activeMarket.trigger.dataset.marketDefinitionName || ''; } if (category) { category.value = activeMarket.trigger.dataset.marketDefinitionCategoryId || ''; } if (website) { website.value = activeMarket.trigger.dataset.marketDefinitionWebsite === 'Nicht hinterlegt' ? '' : (activeMarket.trigger.dataset.marketDefinitionWebsite || ''); } };";
     echo "  editButton.addEventListener('click', (event) => { event.preventDefault(); openEditCard(); });";
     echo "  const appendMarketRow = (market) => { const table = contentRoot.querySelector('[data-market-definitions-table]'); if (!table) { return; } const row = document.createElement('div'); row.className = 'sg-card-segment sg-card-segment--body sg-large-table__row'; row.setAttribute('role', 'row'); row.dataset.componentPart = 'large-table-row'; row.dataset.marketDefinitionRow = ''; row.dataset.marketDefinitionId = String(market.id || ''); const category = form.querySelector('[data-market-definition-category]')?.selectedOptions[0]?.textContent || ''; const website = market.website_url || 'Nicht hinterlegt'; const cells = document.createElement('div'); cells.className = 'sg-large-table__cell'; const trigger = document.createElement('a'); trigger.className = 'sg-hyperlink'; trigger.href = '#'; trigger.setAttribute('aria-haspopup', 'dialog'); trigger.setAttribute('aria-expanded', 'false'); trigger.dataset.marketDefinitionOpen = ''; trigger.dataset.marketDefinitionId = String(market.id || ''); trigger.dataset.marketDefinitionName = market.name || ''; trigger.dataset.marketDefinitionCategoryId = String(market.category_id || ''); trigger.dataset.marketDefinitionCategoryName = category; trigger.dataset.marketDefinitionWebsite = website; trigger.textContent = market.name || ''; cells.appendChild(trigger); row.appendChild(cells); [category, website, '0', 'Aktiv'].forEach((value) => { const cell = document.createElement('div'); cell.className = 'sg-large-table__cell'; cell.setAttribute('role', 'cell'); cell.textContent = value; row.appendChild(cell); }); table.appendChild(row); };";
diff --git a/public/api/market-definition.php b/public/api/market-definition.php
index a6c5b0c..bbb1b03 100644
--- a/public/api/market-definition.php
+++ b/public/api/market-definition.php
@@ -40,7 +40,16 @@ if (!is_array($payload)) {
 
 try {
     $fields = is_array($payload['fields'] ?? null) ? $payload['fields'] : [];
-    if (($payload['action'] ?? 'create') === 'update') {
+    if (($payload['action'] ?? 'create') === 'delete') {
+        $marketId = (int) ($payload['id'] ?? 0);
+        if ($marketId < 1) {
+            throw new InvalidArgumentException('id ist erforderlich.');
+        }
+        if (($payload['confirmation'] ?? '') !== 'DELETE') {
+            throw new InvalidArgumentException('Die Löschbestätigung muss exakt DELETE lauten.');
+        }
+        $market = market_management_set_market_archive($pdo, $marketId, true);
+    } elseif (($payload['action'] ?? 'create') === 'update') {
         $marketId = (int) ($payload['id'] ?? 0);
         if ($marketId < 1) {
             throw new InvalidArgumentException('id ist erforderlich.');
diff --git a/public/assets/styles.portal.css b/public/assets/styles.portal.css
index 176c805..a072ab3 100644
--- a/public/assets/styles.portal.css
+++ b/public/assets/styles.portal.css
@@ -362,7 +362,8 @@ body.sg-lager-mobile-detail-open > :not([data-lager-mobile-detail-host]) {
   display: none;
 }
 
-.sg-card-list-page-drawer [data-market-delete-occurrence-id] {
+.sg-card-list-page-drawer [data-market-delete-occurrence-id],
+.sg-card-list-page-drawer [data-market-definition-delete-id] {
   display: flex;
   flex-direction: column;
   gap: var(--spacing-large);
@@ -370,6 +371,7 @@ body.sg-lager-mobile-detail-open > :not([data-lager-mobile-detail-host]) {
 }
 
 .sg-card-list-page-drawer [data-market-delete-occurrence-id] > .sg-component-row,
+.sg-card-list-page-drawer [data-market-definition-delete-id] > .sg-component-row,
 .sg-card-list-page-drawer .market-delete-confirmation-card .sg-component-row {
   justify-content: flex-end;
 }