diff --git a/app/actions.ts b/app/actions.ts
index db57980..09dfb76 100644
--- a/app/actions.ts
+++ b/app/actions.ts
@@ -165,6 +165,10 @@ export async function createOrUpdateListingAction(formData: FormData) {
   const descriptionRu = formData.get('descriptionRu') as string
   
   const address = formData.get('address') as string
+
+  if (!slug || !categoryId || !neighborhoodId || !nameTr || !address) {
+    return { success: false, error: 'Lütfen zorunlu alanları (Slug, Kategori, Mahalle, İsim, Adres) doldurun.' }
+  }
   const phone = formData.get('phone') as string || null
   const whatsapp = formData.get('whatsapp') as string || null
   const website = formData.get('website') as string || null
@@ -276,6 +280,10 @@ export async function createOrUpdateBlogPostAction(formData: FormData) {
   const contentEn = formData.get('contentEn') as string
   const contentRu = formData.get('contentRu') as string
   
+  if (!slug || !titleTr) {
+    return { success: false, error: 'Lütfen zorunlu alanları (Slug, Başlık) doldurun.' }
+  }
+
   const tagsStr = formData.get('tags') as string || ''
   const tags = tagsStr.split(',').map(t => t.trim()).filter(Boolean)
   
@@ -345,6 +353,10 @@ export async function createOrUpdateCollectionAction(formData: FormData) {
   const descriptionEn = formData.get('descriptionEn') as string
   const descriptionRu = formData.get('descriptionRu') as string
 
+  if (!slug || !titleTr) {
+    return { success: false, error: 'Lütfen zorunlu alanları (Slug, Başlık) doldurun.' }
+  }
+
   const listingIdsStr = formData.get('listingIds') as string || ''
   const listingIds = listingIdsStr.split(',').map(i => i.trim()).filter(Boolean)
 
@@ -409,6 +421,11 @@ export async function createOrUpdateEventAction(formData: FormData) {
   
   const startDateStr = formData.get('startDate') as string
   const endDateStr = formData.get('endDate') as string | null
+
+  if (!slug || !titleTr || !startDateStr) {
+    return { success: false, error: 'Lütfen zorunlu alanları (Slug, Başlık, Başlangıç Tarihi) doldurun.' }
+  }
+
   const isSponsored = formData.get('isSponsored') === 'true'
 
   const startDate = new Date(startDateStr)
diff --git a/lib/openinary.ts b/lib/openinary.ts
index c0e129c..0a2abd5 100644
--- a/lib/openinary.ts
+++ b/lib/openinary.ts
@@ -1,19 +1,46 @@
+import crypto from 'crypto'
+
 export async function uploadToOpeninary(file: File, folder: string = "marmarislocal"): Promise<string> {
-  const url = `${process.env.OPENINARY_API_URL}/upload`;
+  const baseUrl = process.env.OPENINARY_API_URL?.replace(/\/+$/, '');
+  const url = `${baseUrl}/api/upload`;
   const key = process.env.OPENINARY_API_KEY;
 
-  if (!url || !key) {
+  if (!baseUrl || !key) {
     throw new Error("Openinary configuration (OPENINARY_API_URL or OPENINARY_API_KEY) is missing in environment variables.");
   }
 
+  // 1. ENAMETOOLONG Fix: Shorten very long folder parts (e.g. slugs)
+  const safeFolder = folder
+    .split('/')
+    .filter(Boolean) // Avoid double slashes in folder path
+    .map(part => {
+      if (part.length > 50) {
+        const hash = crypto.createHash('md5').update(part).digest('hex').substring(0, 8);
+        return `${part.substring(0, 40)}-${hash}`;
+      }
+      return part;
+    })
+    .join('/');
+
+  // 2. ENAMETOOLONG Fix: Shorten very long filenames
+  const lastDotIndex = file.name.lastIndexOf('.');
+  const ext = lastDotIndex !== -1 ? file.name.substring(lastDotIndex) : '';
+  let nameWithoutExt = lastDotIndex !== -1 ? file.name.substring(0, lastDotIndex) : file.name;
+  
+  if (nameWithoutExt.length > 50) {
+    const hash = crypto.createHash('md5').update(nameWithoutExt).digest('hex').substring(0, 8);
+    nameWithoutExt = `${nameWithoutExt.substring(0, 40)}-${hash}`;
+  }
+  const safeFileName = `${nameWithoutExt}${ext}`;
+
   const formData = new FormData();
-  formData.append("files", file);
-  formData.append("folder", folder);
+  formData.append("files", file, safeFileName);
+  formData.append("folder", safeFolder);
 
   const response = await fetch(url, {
     method: "POST",
     headers: {
-      "x-api-key": key,
+      "Authorization": `Bearer ${key}`,
     },
     body: formData,
   });
@@ -27,9 +54,11 @@ export async function uploadToOpeninary(file: File, folder: string = "marmarislo
   
   // Openinary standard response is usually an array: [{ url: "...", name: "..." }]
   if (Array.isArray(data) && data.length > 0) {
-    return data[0].url || data[0].secure_url;
+    const fileUrl = data[0].url || data[0].secure_url;
+    return fileUrl.startsWith('/') ? `${baseUrl}${fileUrl}` : fileUrl;
   } else if (data && typeof data === "object") {
-    return data.url || data.secure_url || (data.files && data.files[0]?.url);
+    const fileUrl = data.url || data.secure_url || (data.files && data.files[0]?.url);
+    return fileUrl.startsWith('/') ? `${baseUrl}${fileUrl}` : fileUrl;
   }
 
   throw new Error("Invalid response format from Openinary server.");