diff --git a/.DS_Store b/.DS_Store
index a61c8b0..5661c24 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/com_eis/.DS_Store b/com_eis/.DS_Store
index 5423f05..5ccbf1b 100644
Binary files a/com_eis/.DS_Store and b/com_eis/.DS_Store differ
diff --git a/com_eis/Archiv.zip b/com_eis/Archiv.zip
index 7dcf0a2..390d08d 100644
Binary files a/com_eis/Archiv.zip and b/com_eis/Archiv.zip differ
diff --git a/com_eis/administrator/.DS_Store b/com_eis/administrator/.DS_Store
index 43d88e8..1310777 100644
Binary files a/com_eis/administrator/.DS_Store and b/com_eis/administrator/.DS_Store differ
diff --git a/com_eis/administrator/language/.DS_Store b/com_eis/administrator/language/.DS_Store
index 706556e..30f1ba4 100644
Binary files a/com_eis/administrator/language/.DS_Store and b/com_eis/administrator/language/.DS_Store differ
diff --git a/com_eis/administrator/language/de-DE/de-DE.com_eis.ini b/com_eis/administrator/language/de-DE/de-DE.com_eis.ini
index b1a830b..3a089a4 100644
--- a/com_eis/administrator/language/de-DE/de-DE.com_eis.ini
+++ b/com_eis/administrator/language/de-DE/de-DE.com_eis.ini
@@ -1,9 +1,44 @@
+; Joomla Backend – UI-Texte
 
-COM_EIS_DOCUMENT_PATH="Dokumentenpfad"
-COM_EIS_DOCUMENT_PATH_LABEL="Pfad zu den PDF-Dokumenten"
+; Allgemein
+COM_EIS_TITLE="EIS"
+COM_EIS_SUBTITLE="Dokumentenverwaltung"
+COM_EIS_BACK="Zurück"
+COM_EIS_SAVE="Speichern"
+COM_EIS_CANCEL="Abbrechen"
+COM_EIS_APPLY="Anwenden"
+COM_EIS_CLOSE="Schließen"
+
+; Main View (Baum & Scan)
+COM_EIS_PDF_TREE="PDF-Baum"
 COM_EIS_SCAN_DOCUMENTS="Dokumente einlesen"
-COM_EIS_MAIN="EIS Hauptansicht"
-COM_EIS_MENU="EIS"
-COM_EIS_CONFIG="Einstellungen"
-COM_EIS_MAINTENANCE="Wartung"
-COM_EIS_PDF_TREE="Verzeichnisbaum"
+COM_EIS_DOCUMENT_PATH="Dokumenten-Pfad"
+COM_EIS_NO_DOCUMENTS_FOUND="Noch keine Dokumente in der Datenbank. Bitte zuerst „Dokumente einlesen“ ausführen."
+COM_EIS_EXPAND_ALL="Ausklappen"
+COM_EIS_COLLAPSE_ALL="Einklappen"
+COM_EIS_PREVIEW_OPEN_NEWTAB="Im neuen Tab öffnen"
+COM_EIS_PREVIEW_TITLE="PDF-Vorschau"
+COM_EIS_FILESIZE="Dateigröße"
+COM_EIS_VIRTUAL_NEW="Neue Dokumente"
+
+; Config View (Einstellungen)
+COM_EIS_SETTINGS_TITLE="Einstellungen"
+COM_EIS_FIELDSET_GENERAL="Allgemein"
+COM_EIS_FIELD_DOCUMENT_ROOT_LABEL="Basis-Verzeichnis für PDFs"
+COM_EIS_FIELD_DOCUMENT_ROOT_DESC="Absoluter Serverpfad, in dem die PDF-Dateien liegen (z. B. /var/www/pdf)."
+
+; Meldungen
+COM_EIS_MSG_SAVED_SUCCESS="Einstellungen wurden gespeichert."
+COM_EIS_MSG_SAVED_ERROR="Einstellungen konnten nicht gespeichert werden."
+COM_EIS_MSG_SCAN_STARTED="Einlesen gestartet."
+COM_EIS_MSG_SCAN_DONE="Einlesen abgeschlossen."
+COM_EIS_MSG_INVALID_PATH="Der angegebene Pfad ist ungültig oder nicht lesbar."
+
+; Toolbar/Buttons (falls eigene Toolbars)
+COM_EIS_TOOLBAR_SAVE="Speichern"
+COM_EIS_TOOLBAR_APPLY="Übernehmen"
+COM_EIS_TOOLBAR_CLOSE="Schließen"
+
+COM_EIS_MSG_PATH_NOT_EXISTS="Hinweis: Das Verzeichnis „%s“ existiert nicht."
+COM_EIS_MSG_PATH_NOT_READABLE="Hinweis: Das Verzeichnis „%s“ ist nicht lesbar."
+
diff --git a/com_eis/administrator/language/de-DE/de-DE.com_eis.sys.ini b/com_eis/administrator/language/de-DE/de-DE.com_eis.sys.ini
index c6b7729..16e199b 100644
--- a/com_eis/administrator/language/de-DE/de-DE.com_eis.sys.ini
+++ b/com_eis/administrator/language/de-DE/de-DE.com_eis.sys.ini
@@ -1 +1,6 @@
-COM_EIS="EIS Komponente"
\ No newline at end of file
+; Joomla Backend – Systemtexte (Menü, Erweiterungsname, Kurzbeschreibung)
+COM_EIS="EIS"
+COM_EIS_MENU="EIS"
+COM_EIS_MAIN="EIS-Dokumente"
+COM_EIS_CONFIG="Einstellungen"
+COM_EIS_XML_DESCRIPTION="EIS Komponente zum Verwalten und Anzeigen von PDFs."
diff --git a/com_eis/administrator/language/en-GB/en-GB.com_eis.ini b/com_eis/administrator/language/en-GB/en-GB.com_eis.ini
index b1a830b..21703af 100644
--- a/com_eis/administrator/language/en-GB/en-GB.com_eis.ini
+++ b/com_eis/administrator/language/en-GB/en-GB.com_eis.ini
@@ -1,9 +1,32 @@
+COM_EIS_TITLE="EIS"
+COM_EIS_SUBTITLE="Document Management"
+COM_EIS_BACK="Back"
+COM_EIS_SAVE="Save"
+COM_EIS_CANCEL="Cancel"
+COM_EIS_APPLY="Apply"
+COM_EIS_CLOSE="Close"
 
-COM_EIS_DOCUMENT_PATH="Dokumentenpfad"
-COM_EIS_DOCUMENT_PATH_LABEL="Pfad zu den PDF-Dokumenten"
-COM_EIS_SCAN_DOCUMENTS="Dokumente einlesen"
-COM_EIS_MAIN="EIS Hauptansicht"
-COM_EIS_MENU="EIS"
-COM_EIS_CONFIG="Einstellungen"
-COM_EIS_MAINTENANCE="Wartung"
-COM_EIS_PDF_TREE="Verzeichnisbaum"
+COM_EIS_PDF_TREE="PDF Tree"
+COM_EIS_SCAN_DOCUMENTS="Scan Documents"
+COM_EIS_DOCUMENT_PATH="Document Path"
+COM_EIS_NO_DOCUMENTS_FOUND="No documents in the database yet. Please run “Scan Documents” first."
+COM_EIS_EXPAND_ALL="Expand All"
+COM_EIS_COLLAPSE_ALL="Collapse All"
+COM_EIS_PREVIEW_OPEN_NEWTAB="Open in new tab"
+COM_EIS_PREVIEW_TITLE="PDF Preview"
+COM_EIS_FILESIZE="File size"
+
+COM_EIS_SETTINGS_TITLE="Settings"
+COM_EIS_FIELDSET_GENERAL="General"
+COM_EIS_FIELD_DOCUMENT_ROOT_LABEL="Base directory for PDFs"
+COM_EIS_FIELD_DOCUMENT_ROOT_DESC="Absolute server path containing the PDF files (e.g. /var/www/pdf)."
+
+COM_EIS_MSG_SAVED_SUCCESS="Settings saved."
+COM_EIS_MSG_SAVED_ERROR="Settings could not be saved."
+COM_EIS_MSG_SCAN_STARTED="Scan started."
+COM_EIS_MSG_SCAN_DONE="Scan finished."
+COM_EIS_MSG_INVALID_PATH="The specified path is invalid or not readable."
+
+COM_EIS_TOOLBAR_SAVE="Save"
+COM_EIS_TOOLBAR_APPLY="Apply"
+COM_EIS_TOOLBAR_CLOSE="Close"
diff --git a/com_eis/administrator/language/en-GB/en-GB.com_eis.sys.ini b/com_eis/administrator/language/en-GB/en-GB.com_eis.sys.ini
index c6b7729..567a032 100644
--- a/com_eis/administrator/language/en-GB/en-GB.com_eis.sys.ini
+++ b/com_eis/administrator/language/en-GB/en-GB.com_eis.sys.ini
@@ -1 +1,5 @@
-COM_EIS="EIS Komponente"
\ No newline at end of file
+COM_EIS="EIS"
+COM_EIS_MENU="EIS"
+COM_EIS_MAIN="EIS Documents"
+COM_EIS_CONFIG="Settings"
+COM_EIS_XML_DESCRIPTION="EIS component for managing and viewing PDFs."
diff --git a/com_eis/administrator/sql/install.mysql.utf8.sql b/com_eis/administrator/sql/install.mysql.utf8.sql
index 4fa17c6..b1a42e7 100644
--- a/com_eis/administrator/sql/install.mysql.utf8.sql
+++ b/com_eis/administrator/sql/install.mysql.utf8.sql
@@ -1,18 +1,33 @@
+-- Documents
 CREATE TABLE IF NOT EXISTS `#__eis_documents` (
-  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
-  `name` VARCHAR(255) NOT NULL,
-  `path` TEXT NOT NULL,
-  `parent_id` INT UNSIGNED DEFAULT NULL,
-  `is_folder` TINYINT(1) DEFAULT 0,
-  `title` VARCHAR(255) DEFAULT NULL,
-  `description` TEXT DEFAULT NULL,
-  `ordering` INT DEFAULT 0,
-  PRIMARY KEY (`id`)
+  `id`         INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `name`       VARCHAR(255) NOT NULL,
+  `path`       TEXT         NOT NULL,
+  `parent_id`  INT UNSIGNED DEFAULT NULL,
+  `is_folder`  TINYINT(1)   NOT NULL DEFAULT 0,
+  `title`      VARCHAR(255) DEFAULT NULL,
+  `description` TEXT        DEFAULT NULL,
+  `ordering`   INT          NOT NULL DEFAULT 0,
+  `created`    DATETIME     DEFAULT NULL,
+  `modified`   DATETIME     DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  KEY `idx_eis_docs_parent`   (`parent_id`),
+  KEY `idx_eis_docs_ordering` (`ordering`),
+  KEY `idx_eis_docs_name`     (`name`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-
+-- Settings (Key/Value)
 CREATE TABLE IF NOT EXISTS `#__eis_settings` (
-  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
-  `pdf_path` TEXT NOT NULL,
-  PRIMARY KEY (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
\ No newline at end of file
+  `id`       INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `param`    VARCHAR(191) NOT NULL,
+  `value`    TEXT         NULL,
+  `created`  DATETIME     DEFAULT NULL,
+  `modified` DATETIME     DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uniq_param` (`param`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Standardwert für den PDF-Pfad (leer = noch nicht gesetzt)
+
+INSERT IGNORE INTO `#__eis_settings` (`param`, `value`, `created`, `modified`)
+VALUES ('document_root', '/var/www/pdf', NOW(), NOW());
\ No newline at end of file
diff --git a/com_eis/administrator/src/.DS_Store b/com_eis/administrator/src/.DS_Store
index 63835f0..9398dad 100644
Binary files a/com_eis/administrator/src/.DS_Store and b/com_eis/administrator/src/.DS_Store differ
diff --git a/com_eis/administrator/src/Controller/ConfigController.php b/com_eis/administrator/src/Controller/ConfigController.php
index 3f05047..1937add 100644
--- a/com_eis/administrator/src/Controller/ConfigController.php
+++ b/com_eis/administrator/src/Controller/ConfigController.php
@@ -4,43 +4,55 @@ namespace EIS\Component\EIS\Administrator\Controller;
 \defined('_JEXEC') or die;
 
 use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
 use Joomla\CMS\MVC\Controller\BaseController;
 use Joomla\CMS\Router\Route;
+use Joomla\CMS\Session\Session;
+use EIS\Component\EIS\Administrator\Helper\SettingsHelper;
 
 class ConfigController extends BaseController
 {
     public function save(): void
     {
-        $app = Factory::getApplication();
-        $input = $app->getInput();
-        $db = Factory::getDbo();
-
-        // Eingabe
-        $pdfPath = $input->getString('pdf_path', '');
-
-        // Existiert ein Eintrag?
-        $query = $db->getQuery(true)
-            ->select('COUNT(*)')
-            ->from($db->quoteName('#__eis_settings'));
-        $db->setQuery($query);
-        $exists = (int) $db->loadResult() > 0;
-
-        if ($exists) {
-            // Update
-            $query = $db->getQuery(true)
-                ->update($db->quoteName('#__eis_settings'))
-                ->set($db->quoteName('pdf_path') . ' = ' . $db->quote($pdfPath));
-        } else {
-            // Insert
-            $query = $db->getQuery(true)
-                ->insert($db->quoteName('#__eis_settings'))
-                ->columns([$db->quoteName('pdf_path')])
-                ->values($db->quote($pdfPath));
+        // CSRF
+        if (!Session::checkToken('post')) {
+            throw new \RuntimeException(Text::_('JINVALID_TOKEN'), 403);
         }
 
-        $db->setQuery($query)->execute();
+        $app   = Factory::getApplication();
+        $input = $app->getInput();
 
-        $app->enqueueMessage('Pfad gespeichert: ' . $pdfPath, 'message');
+        // Feldname aus dem Config-Template
+        $path  = (string) $input->post->get('document_root', '', 'string');
+        $path  = trim($path);
+
+        // Minimal-Validierung & Normalisierung
+        // (Hier kein striktes is_readable(), damit man den Pfad auch erst konfigurieren kann,
+        //  wenn das Verzeichnis später angelegt/umgehängt wird. Warnen ist aber hilfreich.)
+        if ($path === '') {
+            $app->enqueueMessage(Text::_('COM_EIS_MSG_INVALID_PATH') ?: 'Bitte einen gültigen Pfad angeben.', 'warning');
+            $this->setRedirect(Route::_('index.php?option=com_eis&view=config', false));
+            return;
+        }
+
+        // Doppelte Slashes und trailing Slash bereinigen
+        $path = preg_replace('#/+#', '/', $path);
+        // Lass den Root-Slash stehen, entferne sonst trailing Slash
+        if ($path !== '/' && str_ends_with($path, '/')) {
+            $path = rtrim($path, '/');
+        }
+
+        // Optional: Hinweise zur Existenz/Lesbarkeit (nur Hinweis, kein Hard-Error)
+        if (!is_dir($path)) {
+            $app->enqueueMessage(Text::sprintf('COM_EIS_MSG_PATH_NOT_EXISTS', $path) ?: "Hinweis: Verzeichnis existiert nicht: {$path}", 'notice');
+        } elseif (!is_readable($path)) {
+            $app->enqueueMessage(Text::sprintf('COM_EIS_MSG_PATH_NOT_READABLE', $path) ?: "Hinweis: Verzeichnis nicht lesbar: {$path}", 'notice');
+        }
+
+        // Persistieren
+        SettingsHelper::setSetting('document_root', $path);
+
+        $app->enqueueMessage(Text::_('COM_EIS_MSG_SAVED_SUCCESS') ?: 'Einstellungen wurden gespeichert.', 'message');
         $this->setRedirect(Route::_('index.php?option=com_eis&view=config', false));
     }
 }
diff --git a/com_eis/administrator/src/Controller/DisplayController.php b/com_eis/administrator/src/Controller/DisplayController.php
index dd15b78..ab8e989 100644
--- a/com_eis/administrator/src/Controller/DisplayController.php
+++ b/com_eis/administrator/src/Controller/DisplayController.php
@@ -5,8 +5,12 @@ namespace EIS\Component\EIS\Administrator\Controller;
 \defined('_JEXEC') or die;
 
 use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
 use Joomla\CMS\MVC\Controller\BaseController;
+use Joomla\CMS\Router\Route;
+use Joomla\CMS\Session\Session;
 use Joomla\Database\DatabaseDriver;
+use EIS\Component\EIS\Administrator\Helper\SettingsHelper;
 
 class DisplayController extends BaseController
 {
@@ -17,36 +21,39 @@ class DisplayController extends BaseController
      */
     public function scan(): void
     {
-        $db = Factory::getDbo();
+        // CSRF prüfen (Form hat Token)
+        if (!Session::checkToken('post')) {
+            throw new \RuntimeException(Text::_('JINVALID_TOKEN'), 403);
+        }
 
-        // Pfad aus Tabelle laden
-        $query = $db->getQuery(true)
-            ->select($db->quoteName('pdf_path'))
-            ->from($db->quoteName('#__eis_settings'))
-            ->order('id ASC')
-            ->setLimit(1);
+        $app = Factory::getApplication();
+        /** @var DatabaseDriver $db */
+        $db  = Factory::getDbo();
 
-        $db->setQuery($query);
-        $path = $db->loadResult();
+        // Pfad aus Settings laden (Key/Value); Default /var/www/pdf
+        $path = SettingsHelper::getSetting('document_root', '/var/www/pdf');
 
         if (!$path || !is_dir($path)) {
-            Factory::getApplication()->enqueueMessage('Pfad ungültig oder nicht gesetzt: ' . $path, 'error');
-            $this->setRedirect('index.php?option=com_eis&view=main');
+            $app->enqueueMessage(Text::sprintf('COM_EIS_MSG_PATH_NOT_EXISTS', $path) ?: ('Pfad ungültig oder nicht gesetzt: ' . $path), 'error');
+            $this->setRedirect(Route::_('index.php?option=com_eis&view=main', false));
             return;
         }
 
         // Verzeichnis rekursiv scannen
         $data = $this->scanFolder($path);
 
-        // Alte Einträge löschen
+        // Alte Einträge löschen (Hinweis: Dann sind ALLE eingefügten „neu“)
         $db->truncateTable('#__eis_documents');
 
-        // In Datenbank speichern
-        $this->saveToDb($data, null, $db);
+        // In Datenbank speichern und neue IDs sammeln
+        $newIds = $this->saveToDb($data, null, $db);
+
+        // Neue IDs im UserState für die View -> virtueller Ordner "Neue Dokumente"
+        $app->setUserState('com_eis.new_ids', $newIds);
 
         // Erfolgsmeldung
-        Factory::getApplication()->enqueueMessage('PDF-Struktur erfolgreich gespeichert.', 'message');
-        $this->setRedirect('index.php?option=com_eis&view=main');
+        $app->enqueueMessage(Text::_('COM_EIS_MSG_SCAN_DONE') ?: 'PDF-Struktur erfolgreich gespeichert.', 'message');
+        $this->setRedirect(Route::_('index.php?option=com_eis&view=main', false));
     }
 
     /**
@@ -59,7 +66,12 @@ class DisplayController extends BaseController
             return $result;
         }
 
-        foreach (scandir($dir) as $file) {
+        $entries = @scandir($dir);
+        if ($entries === false) {
+            return $result;
+        }
+
+        foreach ($entries as $file) {
             if ($file === '.' || $file === '..') {
                 continue;
             }
@@ -78,18 +90,26 @@ class DisplayController extends BaseController
             }
         }
 
+        // Alphabetisch stabil sortieren (Ordner/Dateien je Ebene)
+        usort($result, static function ($a, $b) {
+            return strcasecmp((string)$a['name'], (string)$b['name']);
+        });
+
         return $result;
     }
 
     /**
      * Struktur rekursiv in die Datenbank schreiben
+     * @return int[] Insert-IDs aller neu eingefügten Dateien (für „Neue Dokumente“)
      */
-    private function saveToDb(array $items, ?int $parentId, DatabaseDriver $db): void
+    private function saveToDb(array $items, ?int $parentId, DatabaseDriver $db): array
     {
+        $insertedFileIds = [];
+
         foreach ($items as $item) {
             $name     = $db->quote($item['name']);
-            $path     = $db->quote($item['path'] ?? '');  // Leerer String statt NULL
-            $parent   = $parentId !== null ? (int) $parentId : 'NULL';
+            $path     = $db->quote($item['path'] ?? ''); // leer statt NULL
+            $parent   = $parentId !== null ? (int)$parentId : 'NULL';
             $isFolder = isset($item['children']) ? 1 : 0;
 
             $query = $db->getQuery(true)
@@ -97,45 +117,55 @@ class DisplayController extends BaseController
                 ->columns(['name', 'path', 'parent_id', 'is_folder'])
                 ->values("$name, $path, $parent, $isFolder");
 
-            $db->setQuery($query);
-            $db->execute();
+            $db->setQuery($query)->execute();
 
-            $insertedId = $db->insertid();
+            $insertedId = (int)$db->insertid();
 
             if ($isFolder && !empty($item['children'])) {
-                $this->saveToDb($item['children'], $insertedId, $db);
+                // Kinder speichern
+                $childIds = $this->saveToDb($item['children'], $insertedId, $db);
+                // Nur Datei-IDs sammeln
+                $insertedFileIds = array_merge($insertedFileIds, $childIds);
+            } else {
+                // Datei -> ID merken
+                $insertedFileIds[] = $insertedId;
             }
         }
+
+        return $insertedFileIds;
     }
+
     public function rename(): void
     {
         // CSRF prüfen
-        \Joomla\CMS\Session\Session::checkToken() or jexit(\JText::_('JINVALID_TOKEN'));
+        if (!Session::checkToken('post')) {
+            throw new \RuntimeException(Text::_('JINVALID_TOKEN'), 403);
+        }
 
-        $app = \Joomla\CMS\Factory::getApplication();
-        $id = (int) $app->input->get('id');
-        $title = trim((string) $app->input->get('title', '', 'STRING'));
+        $app   = Factory::getApplication();
+        $id    = (int) $app->input->post->get('id', 0);
+        $title = trim((string) $app->input->post->get('title', '', 'string'));
 
         if ($id <= 0) {
-            $app->enqueueMessage('Ungültige ID', 'error');
-            $this->setRedirect('index.php?option=com_eis&view=main');
+            $app->enqueueMessage(Text::_('JERROR_AN_ERROR_HAS_OCCURRED') ?: 'Ungültige ID', 'error');
+            $this->setRedirect(Route::_('index.php?option=com_eis&view=main', false));
             return;
         }
 
-        /** @var \Joomla\Database\DatabaseDriver $db */
-        $db = \Joomla\CMS\Factory::getDbo();
+        /** @var DatabaseDriver $db */
+        $db = Factory::getDbo();
         $query = $db->getQuery(true)
             ->update($db->quoteName('#__eis_documents'))
             ->set($db->quoteName('title') . ' = ' . ($title === '' ? 'NULL' : $db->quote($title)))
-            ->where($db->quoteName('id') . ' = ' . (int) $id);
+            ->where($db->quoteName('id') . ' = ' . (int)$id);
 
         try {
             $db->setQuery($query)->execute();
-            $app->enqueueMessage('Anzeigename gespeichert', 'message');
+            $app->enqueueMessage(Text::_('COM_EIS_MSG_SAVED_SUCCESS') ?: 'Anzeigename gespeichert', 'message');
         } catch (\Throwable $e) {
-            $app->enqueueMessage('Fehler beim Speichern: ' . $e->getMessage(), 'error');
+            $app->enqueueMessage((Text::_('COM_EIS_MSG_SAVED_ERROR') ?: 'Fehler beim Speichern: ') . $e->getMessage(), 'error');
         }
 
-        $this->setRedirect('index.php?option=com_eis&view=main');
+        $this->setRedirect(Route::_('index.php?option=com_eis&view=main', false));
     }
 }
diff --git a/com_eis/administrator/src/Helper/SettingsHelper.php b/com_eis/administrator/src/Helper/SettingsHelper.php
new file mode 100644
index 0000000..85fddd6
--- /dev/null
+++ b/com_eis/administrator/src/Helper/SettingsHelper.php
@@ -0,0 +1,45 @@
+<?php
+namespace EIS\Component\EIS\Administrator\Helper;
+
+\defined('_JEXEC') or die;
+
+use Joomla\CMS\Factory;
+
+final class SettingsHelper
+{
+    public static function getSetting(string $param, $default = '')
+    {
+        $db = Factory::getDbo();
+        $q  = $db->getQuery(true)
+            ->select($db->quoteName('value'))
+            ->from($db->quoteName('#__eis_settings'))
+            ->where($db->quoteName('param') . ' = ' . $db->quote($param));
+        $db->setQuery($q);
+        $val = $db->loadResult();
+
+        return ($val !== null && $val !== '') ? $val : $default;
+    }
+
+    public static function setSetting(string $param, $value): void
+    {
+        $db = Factory::getDbo();
+
+        // Basis-INSERT per Query-Builder zusammenstellen …
+        $qb = $db->getQuery(true)
+            ->insert($db->quoteName('#__eis_settings'))
+            ->columns([$db->quoteName('param'), $db->quoteName('value'), $db->quoteName('modified')])
+            ->values(
+                $db->quote($param) . ', ' .
+                $db->quote((string) $value) . ', ' .
+                $db->quote(date('Y-m-d H:i:s'))
+            );
+
+        // … und dann als String um "ON DUPLICATE KEY UPDATE" erweitern.
+        $sql = (string) $qb
+            . ' ON DUPLICATE KEY UPDATE '
+            . $db->quoteName('value')    . ' = VALUES(' . $db->quoteName('value') . '), '
+            . $db->quoteName('modified') . ' = VALUES(' . $db->quoteName('modified') . ')';
+
+        $db->setQuery($sql)->execute();
+    }
+}
diff --git a/com_eis/administrator/src/Helper/TreeHelper.php b/com_eis/administrator/src/Helper/TreeHelper.php
index ba62edd..97f18b8 100644
--- a/com_eis/administrator/src/Helper/TreeHelper.php
+++ b/com_eis/administrator/src/Helper/TreeHelper.php
@@ -5,6 +5,7 @@ namespace EIS\Component\EIS\Administrator\Helper;
 \defined('_JEXEC') or die;
 
 use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
 use Joomla\Database\DatabaseDriver;
 
 class TreeHelper
@@ -30,12 +31,46 @@ class TreeHelper
 
         // alphabetisch nach name
         foreach ($grouped as &$group) {
-            usort($group, fn($a, $b) => strcasecmp($a['name'], $b['name']));
+            usort($group, static fn($a, $b) => strcasecmp((string)$a['name'], (string)$b['name']));
         }
 
         return $grouped;
     }
 
+    /**
+     * Kombiniert: Virtueller Ordner "Neue Dokumente" (falls $newIds vorhanden) + normaler Baum
+     */
+    public static function renderTreeWithNew(array $items, array $newIds = []): string
+    {
+        $html = '';
+
+        // 1) Virtueller Ordner "Neue Dokumente"
+        $newFiles = self::collectFilesByIds($items, $newIds);
+        if (!empty($newFiles)) {
+            $label = Text::_('COM_EIS_VIRTUAL_NEW') ?: 'Neue Dokumente';
+
+            $html .= '<ul class="pdf-tree">';
+            $html .= '<li class="folder" data-id="new" data-title="' . htmlspecialchars($label, ENT_QUOTES, 'UTF-8') . '" data-name="' . htmlspecialchars($label, ENT_QUOTES, 'UTF-8') . '" data-count="' . count($newFiles) . '">';
+            $html .= '<span class="toggle" role="button" aria-label="Ordner umschalten" tabindex="0">▼</span> ';
+            $html .= '<span class="folder-label">🆕 ' . htmlspecialchars($label, ENT_QUOTES, 'UTF-8') . ' <small class="count">(' . (int) count($newFiles) . ')</small></span>';
+
+            // Kinder sichtbar
+            $html .= '<ul style="display:block">';
+            foreach ($newFiles as $row) {
+                $html .= self::renderSingleFileLi($row);
+            }
+            $html .= '</ul>';
+
+            $html .= '</li>';
+            $html .= '</ul>';
+        }
+
+        // 2) Normaler Baum
+        $html .= self::renderTree($items, null);
+
+        return $html;
+    }
+
     /** Baum rendern (nutzt title als alternativen Anzeigenamen) */
     public static function renderTree(array $items, ?int $parentId = null): string
     {
@@ -46,39 +81,27 @@ class TreeHelper
         $html = '<ul class="pdf-tree">';
 
         foreach ($items[$parentId] as $item) {
-            $isFolder = (bool) $item['is_folder'];
-            $rawName  = $item['title'] ?: $item['name'];
-            $display  = preg_replace('/\.pdf$/i', '', (string) $rawName);
-            $display  = htmlspecialchars($display, ENT_QUOTES, 'UTF-8');
-            $id       = (int) $item['id'];
+            $isFolder = !empty($item['is_folder']);
+            $rawName  = (string)($item['title'] ?? '') !== '' ? (string)$item['title'] : (string)$item['name'];
+            $display  = preg_replace('/\.pdf$/i', '', $rawName);
+            $display  = htmlspecialchars((string)$display, ENT_QUOTES, 'UTF-8');
+            $id       = (int)$item['id'];
+
             if ($isFolder) {
                 $fileCount = self::countFilesRecursive($items, $id);
 
                 $html .= '<li class="folder"'
-                    .  ' data-id="' . $id . '"'
+                    .  ' data-id="'    . $id . '"'
                     .  ' data-title="' . htmlspecialchars((string)($item['title'] ?? ''), ENT_QUOTES, 'UTF-8') . '"'
                     .  ' data-name="'  . htmlspecialchars((string)$item['name'], ENT_QUOTES, 'UTF-8') . '"'
-                    .  '>';
-                $html .= '<span class="toggle" role="button" aria-label="Ordner umschalten" tabindex="0">▶</span> ';
-                $html .= '<span class="folder-label">📁 ' . $display . ' <small class="count">(' . (int)$fileCount . ')</small></span>';
-                $html .= self::renderTree($items, $id);
-                $html .= '</li>';
+                    .  ' data-count="' . (int)$fileCount . '"'
+                    .  '>'
+                    .  '<span class="toggle" role="button" aria-label="Ordner umschalten" tabindex="0">▶</span> '
+                    .  '<span class="folder-label">📁 ' . $display . ' <small class="count">(' . (int)$fileCount . ')</small></span>'
+                    .  self::renderTree($items, $id)
+                    .  '</li>';
             } else {
-                $sizeStr = '';
-                if (!empty($item['path']) && is_file($item['path'])) {
-                    $size = @filesize($item['path']);
-                    if ($size !== false) {
-                        $sizeStr = ' <small class="meta">(' . self::formatFileSize((int) $size) . ')</small>';
-                    }
-                }
-
-                $html .= '<li class="file"'
-                    .  ' data-id="' . $id . '"'
-                    .  ' data-title="' . htmlspecialchars((string)($item['title'] ?? ''), ENT_QUOTES, 'UTF-8') . '"'
-                    .  ' data-name="'  . htmlspecialchars((string)$item['name'], ENT_QUOTES, 'UTF-8') . '"'
-                    .  '>';
-                $html .= '<span class="file-label">📄 ' . $display . $sizeStr . '</span>';
-                $html .= '</li>';
+                $html .= self::renderSingleFileLi($item, $display);
             }
         }
 
@@ -86,6 +109,64 @@ class TreeHelper
         return $html;
     }
 
+    /** Einzelnes <li> für Datei (wird auch vom virtuellen Ordner genutzt) */
+    private static function renderSingleFileLi(array $item, ?string $displayAlreadyEscaped = null): string
+    {
+        $rawName   = (string)($item['title'] ?? '') !== '' ? (string)$item['title'] : (string)$item['name'];
+        $display   = $displayAlreadyEscaped ?? htmlspecialchars(preg_replace('/\.pdf$/i', '', $rawName), ENT_QUOTES, 'UTF-8');
+        $id        = (int)$item['id'];
+
+        // Dateigröße ermitteln (optional)
+        $sizeStr   = '';
+        $sizeBytes = '';
+        if (!empty($item['path']) && is_file((string)$item['path'])) {
+            $bytes = @filesize((string)$item['path']); // @ unterdrückt Warnungen bei Zugriffsproblemen
+            if ($bytes !== false) {
+                $sizeBytes = (string)(int)$bytes;
+                $sizeStr   = self::formatFileSize((int)$bytes);
+            }
+        }
+
+        $html = '<li class="file"'
+              . ' data-id="'    . $id . '"'
+              . ' data-title="' . htmlspecialchars((string)($item['title'] ?? ''), ENT_QUOTES, 'UTF-8') . '"'
+              . ' data-name="'  . htmlspecialchars((string)$item['name'], ENT_QUOTES, 'UTF-8') . '"'
+              . ' data-size="'  . htmlspecialchars($sizeStr, ENT_QUOTES, 'UTF-8') . '"'
+              . ' data-bytes="' . htmlspecialchars($sizeBytes, ENT_QUOTES, 'UTF-8') . '"'
+              . '>'
+              . '<span class="file-label">📄 ' . $display
+              . ($sizeStr !== '' ? ' <small class="meta">(' . $sizeStr . ')</small>' : '')
+              . '</span>'
+              . '</li>';
+
+        return $html;
+    }
+
+    /** Dateien zu gegebenen IDs einsammeln (nur is_folder = 0) */
+    private static function collectFilesByIds(array $items, array $ids): array
+    {
+        if (empty($ids)) {
+            return [];
+        }
+        $ids = array_map('intval', $ids);
+
+        // Flat-Index aller Rows
+        $idx = [];
+        foreach ($items as $group) {
+            foreach ($group as $row) {
+                $idx[(int)$row['id']] = $row;
+            }
+        }
+
+        $out = [];
+        foreach ($ids as $id) {
+            if (isset($idx[$id]) && empty($idx[$id]['is_folder'])) {
+                $out[] = $idx[$id];
+            }
+        }
+        return $out;
+    }
+
     private static function countFilesRecursive(array $items, int $parentId): int
     {
         $count = 0;
@@ -93,7 +174,7 @@ class TreeHelper
             return 0;
         }
         foreach ($items[$parentId] as $item) {
-            if ((bool) $item['is_folder']) {
+            if (!empty($item['is_folder'])) {
                 $count += self::countFilesRecursive($items, (int)$item['id']);
             } else {
                 $count++;
diff --git a/com_eis/administrator/src/View/Config/HtmlView.php b/com_eis/administrator/src/View/Config/HtmlView.php
index b0f1f90..4e77a89 100644
--- a/com_eis/administrator/src/View/Config/HtmlView.php
+++ b/com_eis/administrator/src/View/Config/HtmlView.php
@@ -4,29 +4,20 @@ namespace EIS\Component\EIS\Administrator\View\Config;
 \defined('_JEXEC') or die;
 
 use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
-use Joomla\CMS\Factory;
+use EIS\Component\EIS\Administrator\Helper\SettingsHelper;
 
 class HtmlView extends BaseHtmlView
 {
-    protected $form;
-    protected $item;
+    protected $pdfPath = '';
 
     public function display($tpl = null): void
     {
-        $db = Factory::getDbo();
-        $query = $db->getQuery(true)
-            ->select('*')
-            ->from($db->quoteName('#__eis_settings'))
-            ->setLimit(1);
-
-        $db->setQuery($query);
-        $this->item = $db->loadAssoc();
-
+        $this->pdfPath = SettingsHelper::getSetting('document_root', '/var/www/pdf');
         parent::display($tpl);
     }
 
-    public function getItem()
+    public function getPdfPath(): string
     {
-        return $this->item;
+        return (string)$this->pdfPath;
     }
 }
diff --git a/com_eis/administrator/src/View/Main/HtmlView.php b/com_eis/administrator/src/View/Main/HtmlView.php
index d1eb580..74c5486 100644
--- a/com_eis/administrator/src/View/Main/HtmlView.php
+++ b/com_eis/administrator/src/View/Main/HtmlView.php
@@ -1,20 +1,41 @@
 <?php
-
 namespace EIS\Component\EIS\Administrator\View\Main;
 
 \defined('_JEXEC') or die;
 
+use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
 use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
 use EIS\Component\EIS\Administrator\Helper\TreeHelper;
 
 class HtmlView extends BaseHtmlView
 {
+    /** @var string HTML des Baums (inkl. virtuellem Ordner „Neue Dokumente“, falls vorhanden) */
+    protected $treeHtml = '';
+
     public function display($tpl = null): void
     {
-        // Baumdaten laden und fürs Template bereitstellen
-        $items = TreeHelper::getItems();
-        $this->treeHtml = TreeHelper::renderTree($items);
+        $app   = Factory::getApplication();
 
+        // Daten für den Baum holen
+        $items  = TreeHelper::getItems();
+
+        // Neu hinzugekommene IDs aus dem letzten Scan (können leer sein)
+        $newIds = (array) $app->getUserState('com_eis.new_ids', []);
+
+        // Baum rendern (virtueller Ordner „Neue Dokumente“ + normaler Baum)
+        $this->treeHtml = TreeHelper::renderTreeWithNew($items, $newIds);
+
+        // Template rendern
         parent::display($tpl);
+
+        // Optional: nur einmal anzeigen -> State leeren
+        $app->setUserState('com_eis.new_ids', []);
+    }
+
+    /** Ermöglicht im Template: $this->treeHtml */
+    public function getTreeHtml(): string
+    {
+        return (string) $this->treeHtml;
     }
 }
diff --git a/com_eis/administrator/tmpl/.DS_Store b/com_eis/administrator/tmpl/.DS_Store
index be3cf99..cad045a 100644
Binary files a/com_eis/administrator/tmpl/.DS_Store and b/com_eis/administrator/tmpl/.DS_Store differ
diff --git a/com_eis/administrator/tmpl/config/default.php b/com_eis/administrator/tmpl/config/default.php
index 7c485e0..7c48678 100644
--- a/com_eis/administrator/tmpl/config/default.php
+++ b/com_eis/administrator/tmpl/config/default.php
@@ -1,38 +1,72 @@
-<?php defined('_JEXEC') or die;
+<?php
+\defined('_JEXEC') or die;
 
 use Joomla\CMS\Language\Text;
 use Joomla\CMS\Router\Route;
 use Joomla\CMS\HTML\HTMLHelper;
-use Joomla\CMS\Session\Session;
 
-$item = $this->getItem();
-$pdfPath = $item['pdf_path'] ?? '';
+// Wert aus der View (HtmlView::getPdfPath()), Fallback leer
+$pdfPath = method_exists($this, 'getPdfPath') ? (string) $this->getPdfPath() : '';
 ?>
+<h2 class="mb-3">
+  <?php echo Text::_('COM_EIS_SETTINGS_TITLE') ?: 'Einstellungen'; ?>
+</h2>
 
-<h2><?php echo Text::_('COM_EIS_CONFIG_TITLE'); ?></h2>
+<form action="<?php echo Route::_('index.php?option=com_eis&task=config.save'); ?>"
+      method="post"
+      name="adminForm"
+      id="adminForm"
+      novalidate>
+  <div class="form-horizontal">
+    <fieldset class="adminform">
+      <legend><?php echo Text::_('COM_EIS_FIELDSET_GENERAL') ?: 'Allgemein'; ?></legend>
 
-<form action="<?php echo Route::_('index.php?option=com_eis&task=config.save'); ?>" method="post" name="adminForm" id="adminForm">
-    <div class="form-horizontal">
-        <fieldset class="adminform">
-            <legend><?php echo Text::_('COM_EIS_FIELDSET_SETTINGS'); ?></legend>
+      <div class="control-group">
+        <label class="control-label" for="document_root">
+          <?php echo Text::_('COM_EIS_FIELD_DOCUMENT_ROOT_LABEL') ?: 'Basis-Verzeichnis für PDFs'; ?>
+        </label>
+        <div class="controls">
+          <input
+            type="text"
+            class="form-control"
+            name="document_root"
+            id="document_root"
+            value="<?php echo htmlspecialchars($pdfPath, ENT_QUOTES, 'UTF-8'); ?>"
+            placeholder="/var/www/pdf"
+            size="60"
+            required
+          />
+          <p class="help-block" style="margin-top:.35rem;">
+            <?php echo Text::_('COM_EIS_FIELD_DOCUMENT_ROOT_DESC')
+              ?: 'Absoluter Serverpfad, in dem die PDF-Dateien liegen (z. B. /var/www/pdf).'; ?>
+          </p>
+        </div>
+      </div>
 
-            <div class="control-group">
-                <label class="control-label" for="pdf_path">
-                    <?php echo Text::_('COM_EIS_FIELD_PDF_PATH'); ?>
-                </label>
-                <div class="controls">
-                    <input type="text" name="pdf_path" id="pdf_path" value="<?php echo htmlspecialchars($pdfPath, ENT_QUOTES); ?>" size="60" />
-                </div>
-            </div>
+    </fieldset>
+  </div>
 
-        </fieldset>
-    </div>
+  <div class="mt-2">
+    <button type="submit" class="btn btn-primary">
+      <?php echo Text::_('JSAVE') ?: 'Speichern'; ?>
+    </button>
+  </div>
 
-    <div>
-        <button type="submit" class="btn btn-primary">
-            <?php echo Text::_('JSAVE'); ?>
-        </button>
-    </div>
-
-    <?php echo HTMLHelper::_('form.token'); ?>
+  <?php echo HTMLHelper::_('form.token'); ?>
 </form>
+
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+  const form = document.getElementById('adminForm');
+  if (!form) return;
+
+  form.addEventListener('submit', function (e) {
+    const input = document.getElementById('document_root');
+    if (!input || !input.value.trim()) {
+      e.preventDefault();
+      alert('<?php echo Text::_('COM_EIS_MSG_INVALID_PATH') ?: 'Bitte einen gültigen Pfad angeben.'; ?>');
+      input?.focus();
+    }
+  });
+});
+</script>
diff --git a/com_eis/administrator/tmpl/main/default.php b/com_eis/administrator/tmpl/main/default.php
index 7ecccf5..e2c1adf 100644
--- a/com_eis/administrator/tmpl/main/default.php
+++ b/com_eis/administrator/tmpl/main/default.php
@@ -4,114 +4,58 @@
 use Joomla\CMS\HTML\HTMLHelper;
 use Joomla\CMS\Router\Route;
 use Joomla\CMS\Language\Text;
+
+$hasTree = !empty($this->treeHtml);
 ?>
+<style>
+  /* Layout */
+  .eis-flex{display:flex;gap:1rem;align-items:flex-start}
+  .eis-tree-wrap{flex:1 1 auto;background:#f9f9f9;border:1px solid #ddd;border-radius:6px;padding:1em}
+  .eis-edit{flex:0 0 360px;background:#fff;border:1px solid #ddd;border-radius:6px;padding:1em}
+  .eis-edit h4{margin:.2rem 0 1rem}
+
+  /* Baum */
+  .pdf-tree{list-style:none;margin:0;padding:0}
+  .pdf-tree ul{list-style:none;margin-left:1.25em;padding:0;display:none}
+  .pdf-tree li{margin:.35em 0}
+  .folder>.toggle{cursor:pointer;width:1.25em;display:inline-block;user-select:none}
+  .folder>.folder-label,.file>.file-label{cursor:pointer;user-select:none}
+  .pdf-tree .meta{color:#666}
+  .pdf-tree .count{color:#999}
+  .pdf-tree .is-selected{background:rgba(0,0,0,.06);border-radius:3px}
+
+  /* Steuerleiste */
+  .controls{margin-bottom:.75em}
+  .controls button{margin-right:.5em}
+
+  /* Form */
+  .control-group{margin-bottom:.6rem}
+  .form-help{color:#666;font-size:.9em}
+</style>
 
 <!-- Scan-Formular -->
-<form action="<?php echo Route::_('index.php?option=com_eis&task=display.scan'); ?>" method="post" name="adminForm" id="adminForm">
-  <div class="form-horizontal">
-    <fieldset class="adminform">
-      <legend><?php echo Text::_('COM_EIS_DOCUMENT_PATH'); ?></legend>
-      <!-- Optional: Hier später Pfad aus Einstellungen anzeigen -->
-    </fieldset>
-
-    <div class="mt-2">
-      <button class="btn btn-primary" type="submit">
-        <?php echo Text::_('COM_EIS_SCAN_DOCUMENTS'); ?>
-      </button>
-    </div>
+<form action="<?php echo Route::_('index.php?option=com_eis&task=display.scan'); ?>" method="post" id="eis-scan-form">
+  <fieldset class="adminform">
+    <legend><?php echo Text::_('COM_EIS_DOCUMENT_PATH'); ?></legend>
+    <div class="form-help"><?php echo Text::_('COM_EIS_SETTINGS_TITLE'); ?> · <?php echo Text::_('COM_EIS_FIELD_DOCUMENT_ROOT_LABEL'); ?></div>
+  </fieldset>
+  <div class="mt-2">
+    <button class="btn btn-primary" type="submit">
+      <?php echo Text::_('COM_EIS_SCAN_DOCUMENTS'); ?>
+    </button>
   </div>
   <?php echo HTMLHelper::_('form.token'); ?>
 </form>
 
 <hr>
 
-<?php $hasTree = !empty($this->treeHtml); ?>
-
 <?php if (!$hasTree): ?>
   <p class="text-muted">
-    <?php echo Text::_('COM_EIS_NO_DOCUMENTS_FOUND') ?: 'Noch keine Dokumente in der Datenbank. Bitte zuerst „Dokumente einlesen“ ausführen.'; ?>
+    <?php echo Text::_('COM_EIS_NO_DOCUMENTS_FOUND'); ?>
   </p>
 <?php else: ?>
 
-  <style>
-    /* Layout */
-    .eis-flex {
-      display: flex;
-      gap: 1rem;
-      align-items: flex-start;
-    }
-
-    .eis-tree-wrap {
-      flex: 1 1 auto;
-      background: #f9f9f9;
-      border: 1px solid #ddd;
-      border-radius: 6px;
-      padding: 1em;
-    }
-
-    .eis-edit {
-      flex: 0 0 360px;
-      background: #fff;
-      border: 1px solid #ddd;
-      border-radius: 6px;
-      padding: 1em;
-    }
-
-    .eis-edit h4 {
-      margin-top: 0;
-    }
-
-    /* Baum */
-    .pdf-tree {
-      list-style: none;
-      margin: 0;
-      padding: 0;
-    }
-
-    .pdf-tree ul {
-      list-style: none;
-      margin-left: 1.5em;
-      padding: 0;
-      display: none;
-    }
-
-    /* Unterebenen eingeklappt */
-    .pdf-tree li {
-      margin: .3em 0;
-    }
-
-    .folder>.toggle {
-      cursor: pointer;
-      width: 1em;
-      display: inline-block;
-      user-select: none;
-    }
-
-    .folder>.folder-label,
-    .file>.file-label {
-      cursor: pointer;
-      user-select: none;
-    }
-
-    .pdf-tree .meta {
-      color: #666;
-    }
-
-    .pdf-tree .count {
-      color: #999;
-    }
-
-    /* Steuerleiste */
-    .controls {
-      margin-bottom: .75em;
-    }
-
-    .controls button {
-      margin-right: .5em;
-    }
-  </style>
-
-  <h3 class="mt-3"><?php echo Text::_('COM_EIS_PDF_TREE') ?: 'PDF-Baum'; ?></h3>
+  <h3 class="mt-3"><?php echo Text::_('COM_EIS_PDF_TREE'); ?></h3>
 
   <div class="eis-flex">
 
@@ -119,14 +63,14 @@ use Joomla\CMS\Language\Text;
     <div class="eis-tree-wrap">
       <div class="controls">
         <button id="eis-expand-all" type="button" class="btn btn-sm btn-secondary">
-          <?php echo Text::_('JGLOBAL_EXPAND_ALL') ?: 'Ausklappen'; ?>
+          <?php echo Text::_('COM_EIS_EXPAND_ALL'); ?>
         </button>
         <button id="eis-collapse-all" type="button" class="btn btn-sm btn-secondary">
-          <?php echo Text::_('JGLOBAL_COLLAPSE_ALL') ?: 'Einklappen'; ?>
+          <?php echo Text::_('COM_EIS_COLLAPSE_ALL'); ?>
         </button>
       </div>
 
-      <div class="tree">
+      <div class="tree" id="eis-tree" role="tree" aria-label="<?php echo Text::_('COM_EIS_PDF_TREE'); ?>">
         <?php echo $this->treeHtml; ?>
       </div>
     </div>
@@ -134,24 +78,27 @@ use Joomla\CMS\Language\Text;
     <!-- Rechte Seite: Inline-Bearbeitungsformular -->
     <div class="eis-edit">
       <h4><?php echo Text::_('COM_EIS_EDIT_TITLE') ?: 'Anzeigename bearbeiten'; ?></h4>
-      <form action="<?php echo Route::_('index.php?option=com_eis&task=display.rename'); ?>" method="post" id="eis-rename-form">
+
+      <form action="<?php echo Route::_('index.php?option=com_eis&task=display.rename'); ?>" method="post" id="eis-rename-form" novalidate>
         <div class="control-group">
           <label for="eis-current-name"><?php echo Text::_('COM_EIS_FIELD_NAME') ?: 'Originalname'; ?></label>
           <input type="text" id="eis-current-name" class="form-control" value="" readonly>
         </div>
 
-        <div class="control-group" style="margin-top:.5rem;">
+        <div class="control-group">
           <label for="eis-title"><?php echo Text::_('COM_EIS_FIELD_TITLE') ?: 'Anzeigename (optional)'; ?></label>
-          <input type="text" name="title" id="eis-title" class="form-control" value="" placeholder="<?php echo Text::_('COM_EIS_PLACEHOLDER_TITLE') ?: 'Leer lassen = automatisch aus Dateiname'; ?>">
+          <input type="text" name="title" id="eis-title" class="form-control" value=""
+                 placeholder="<?php echo Text::_('COM_EIS_PLACEHOLDER_TITLE') ?: 'Leer lassen = automatisch aus Dateiname'; ?>">
+          <div class="form-help"><?php echo Text::_('COM_EIS_FILESIZE'); ?>: <span id="eis-filesize">–</span></div>
         </div>
 
         <input type="hidden" name="id" id="eis-id" value="">
 
-        <div style="margin-top:.75rem;">
-          <button type="submit" class="btn btn-success">
-            <?php echo Text::_('JSAVE') ?: 'Speichern'; ?>
+        <div class="mt-2">
+          <button type="submit" class="btn btn-success" id="eis-save" disabled>
+            <?php echo Text::_('JSAVE'); ?>
           </button>
-          <button type="button" id="eis-clear-title" class="btn btn-light">
+          <button type="button" id="eis-clear-title" class="btn btn-light" disabled>
             <?php echo Text::_('JDEFAULT') ?: 'Zurücksetzen'; ?>
           </button>
         </div>
@@ -162,64 +109,76 @@ use Joomla\CMS\Language\Text;
   </div>
 
   <script>
-    document.addEventListener('DOMContentLoaded', function() {
-      const wrap = document.querySelector('.eis-tree-wrap');
-      const form = document.getElementById('eis-rename-form');
-      const idField = document.getElementById('eis-id');
-      const nameField = document.getElementById('eis-current-name');
-      const titleField = document.getElementById('eis-title');
-      const clearBtn = document.getElementById('eis-clear-title');
+    document.addEventListener('DOMContentLoaded', function () {
+      const tree    = document.getElementById('eis-tree');
+      const form    = document.getElementById('eis-rename-form');
+      const idFld   = document.getElementById('eis-id');
+      const nameFld = document.getElementById('eis-current-name');
+      const titleFld= document.getElementById('eis-title');
+      const sizeOut = document.getElementById('eis-filesize');
+      const btnSave = document.getElementById('eis-save');
+      const btnClr  = document.getElementById('eis-clear-title');
 
-      if (!wrap || !form) return;
+      if (!tree || !form) return;
 
-      // Einzelnes Toggle: Caret ODER Label
-      wrap.addEventListener('click', (e) => {
+      let lastSelected;
+
+      // Toggle (Caret) & Auswahl
+      tree.addEventListener('click', (e) => {
         const t = e.target;
 
-        // Toggle (Caret oder Label für Ordner)
+        // Ein-/Ausklappen
         if (t.classList.contains('toggle') || t.classList.contains('folder-label')) {
           const li = t.closest('li.folder');
           if (li) {
-            // direkte Kind-UL finden
-            let childUl = null;
-            for (const el of li.children) {
-              if (el.tagName === 'UL') {
-                childUl = el;
-                break;
-              }
-            }
+            const childUl = li.querySelector(':scope > ul');
             if (childUl) {
               const open = childUl.style.display === 'block';
               childUl.style.display = open ? 'none' : 'block';
-              const caret = li.querySelector(':scope > .toggle') || li.querySelector('.toggle');
+              const caret = li.querySelector(':scope > .toggle');
               if (caret) caret.textContent = open ? '▶' : '▼';
             }
           }
         }
 
-        // Auswahl fürs Bearbeiten: Klick auf Ordner- oder Datei-Label
+        // Auswahl für Bearbeitung (Ordner- oder Datei-Label)
         if (t.classList.contains('folder-label') || t.classList.contains('file-label')) {
           const li = t.closest('li');
           if (!li) return;
 
-          const id = li.getAttribute('data-id') || '';
-          const title = li.getAttribute('data-title') || '';
-          const name = li.getAttribute('data-name') || '';
+          // Visuelles Highlight
+          if (lastSelected) lastSelected.classList.remove('is-selected');
+          t.classList.add('is-selected');
+          lastSelected = t;
 
-          idField.value = id;
-          nameField.value = name;
-          titleField.value = title;
-          titleField.focus();
+          // Daten aus data-Attributen (TreeHelper muss sie setzen)
+          const id    = li.getAttribute('data-id') || '';
+          const title = li.getAttribute('data-title') || '';
+          const name  = li.getAttribute('data-name') || '';
+          const size  = li.getAttribute('data-size') || ''; // optional
+
+
+          idFld.value   = id;
+          nameFld.value = name;
+          titleFld.value= title;
+          sizeOut.textContent = size || '–';
+
+          // Buttons ermöglichen
+          btnSave.disabled = !id;
+          btnClr.disabled  = !id;
+
+          // Fokus ins Titel-Feld
+          titleFld.focus();
         }
       });
 
-      // "Zurücksetzen" = Anzeigename löschen (fällt auf Dateiname zurück)
-      clearBtn?.addEventListener('click', () => {
-        titleField.value = '';
-        titleField.focus();
+      // „Zurücksetzen“ = Titel leeren
+      btnClr?.addEventListener('click', () => {
+        titleFld.value = '';
+        titleFld.focus();
       });
 
-      // Global: Alle aus-/einklappen
+      // Global: Aus-/Einklappen
       document.getElementById('eis-expand-all')?.addEventListener('click', () => {
         document.querySelectorAll('.pdf-tree ul').forEach(ul => ul.style.display = 'block');
         document.querySelectorAll('.pdf-tree .toggle').forEach(t => t.textContent = '▼');
@@ -231,4 +190,4 @@ use Joomla\CMS\Language\Text;
     });
   </script>
 
-<?php endif; ?>
\ No newline at end of file
+<?php endif; ?>