diff --git a/app/src/main/assets/questionnaire_order.json b/app/src/main/assets/questionnaire_order.json
index 18ac359..1f1463d 100644
--- a/app/src/main/assets/questionnaire_order.json
+++ b/app/src/main/assets/questionnaire_order.json
@@ -1,24 +1,41 @@
 [
   {
     "file": "questionnaire_1_demographic_information.json",
-    "showPoints": false
+    "showPoints": false,
+    "condition": {
+      "alwaysAvailable": true
+    }
   },
   {
     "file": "questionnaire_2_rhs.json",
-    "showPoints": true
+    "showPoints": true,
+    "condition": {
+      "alwaysAvailable": true
+    }
   },
   {
     "file": "questionnaire_3_integration_index.json",
-    "showPoints": true
+    "showPoints": true,
+    "condition": {
+      "alwaysAvailable": true
+    }
   },
   {
     "file": "questionnaire_4_consultation_results.json",
-    "showPoints": false
+    "showPoints": false,
+    "condition": {
+      "requiresCompleted": [
+        "questionnaire_1_demographic_information",
+        "questionnaire_2_rhs",
+        "questionnaire_3_integration_index"
+      ]
+    }
   },
   {
     "file": "questionnaire_5_final_interview.json",
     "showPoints": false,
     "condition": {
+      "requiresCompleted": ["questionnaire_4_consultation_results"],
       "questionnaire": "questionnaire_4_consultation_results",
       "questionId": "consultation_decision",
       "operator": "==",
@@ -27,6 +44,20 @@
   },
   {
     "file": "questionnaire_6_follow_up_survey.json",
-    "showPoints": false
+    "showPoints": false,
+    "condition": {
+      "anyOf": [
+        {
+          "requiresCompleted": ["questionnaire_5_final_interview"]
+        },
+        {
+          "requiresCompleted": ["questionnaire_4_consultation_results"],
+          "questionnaire": "questionnaire_4_consultation_results",
+          "questionId": "consultation_decision",
+          "operator": "!=",
+          "value": "yellow"
+        }
+      ]
+    }
   }
 ]
diff --git a/app/src/main/java/com/dano/test1/HandlerClientCoachCode.kt b/app/src/main/java/com/dano/test1/HandlerClientCoachCode.kt
index b179cbf..ba363d6 100644
--- a/app/src/main/java/com/dano/test1/HandlerClientCoachCode.kt
+++ b/app/src/main/java/com/dano/test1/HandlerClientCoachCode.kt
@@ -69,6 +69,11 @@ class HandlerClientCoachCode(
         val clientCode = clientCodeField.text.toString()
         val coachCode = coachCodeField.text.toString()
 
+        // Prüfen, ob die Datenbank-Dateien vor dem Klick existieren
+        val dbFile = layout.context.getDatabasePath("questionnaire_database")
+        val dbJournalFile = layout.context.getDatabasePath("questionnaire_database-journal")
+        val dbExisted = dbFile.exists() || dbJournalFile.exists()
+
         // Check if client code already exists asynchronously
         CoroutineScope(Dispatchers.IO).launch {
             val existingClient = MyApp.database.clientDao().getClientByCode(clientCode)
@@ -81,6 +86,13 @@ class HandlerClientCoachCode(
                 } else {
                     // Either no existing client or re-using previous code
                     saveAnswers(clientCode, coachCode)
+
+                    // Datenbank-Dateien löschen, wenn sie vorher NICHT existierten
+                    if (!dbExisted) {
+                        dbFile.delete()
+                        dbJournalFile.delete()
+                    }
+
                     goToNextQuestion()
                 }
             }
diff --git a/app/src/main/java/com/dano/test1/HandlerOpeningScreen.kt b/app/src/main/java/com/dano/test1/HandlerOpeningScreen.kt
index e592d4f..fb897df 100644
--- a/app/src/main/java/com/dano/test1/HandlerOpeningScreen.kt
+++ b/app/src/main/java/com/dano/test1/HandlerOpeningScreen.kt
@@ -8,10 +8,11 @@ import android.view.View
 import android.widget.*
 import kotlinx.coroutines.*
 import org.json.JSONArray
+import org.json.JSONObject
 import android.util.Log
+import com.dano.test1.data.CompletedQuestionnaire
 import java.io.File
 
-
 var INTEGRATION_INDEX_POINTS: Int? = null
 
 class HandlerOpeningScreen(private val activity: MainActivity) {
@@ -52,8 +53,7 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
         val pathExists = File(dbPath).exists()
         if (pathExists) {
             updateMainButtonsState(true)
-        }
-        else{
+        } else {
             updateMainButtonsState(false)
         }
 
@@ -90,15 +90,7 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
                 val obj = jsonArray.getJSONObject(i)
                 val file = obj.getString("file")
                 val conditionObj = obj.optJSONObject("condition")
-                val condition = if (conditionObj != null) {
-                    QuestionItem.Condition(
-                        questionnaire = conditionObj.getString("questionnaire"),
-                        questionId = conditionObj.getString("questionId"),
-                        operator = conditionObj.getString("operator"),
-                        value = conditionObj.getString("value")
-                    )
-                } else null
-
+                val condition = parseCondition(conditionObj)
                 val showPoints = obj.optBoolean("showPoints", false)
 
                 QuestionItem.QuestionnaireEntry(file, condition, showPoints)
@@ -109,6 +101,63 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
         }
     }
 
+    // Parser: erzeugt ein QuestionItem.Condition? (sehr robust gegenüber verschiedenen JSON-Formaten)
+    private fun parseCondition(conditionObj: JSONObject?): QuestionItem.Condition? {
+        if (conditionObj == null) return null
+
+        // anyOf
+        if (conditionObj.has("anyOf")) {
+            val arr = conditionObj.optJSONArray("anyOf") ?: JSONArray()
+            val conditions = mutableListOf<QuestionItem.Condition>()
+            for (i in 0 until arr.length()) {
+                val sub = arr.optJSONObject(i)
+                parseCondition(sub)?.let { conditions.add(it) }
+            }
+            return QuestionItem.Condition.AnyOf(conditions)
+        }
+
+        // alwaysAvailable
+        if (conditionObj.has("alwaysAvailable")) {
+            val flag = conditionObj.optBoolean("alwaysAvailable", false)
+            if (flag) return QuestionItem.Condition.AlwaysAvailable
+        }
+
+        // requiresCompleted (array)
+        val requiresList = mutableListOf<String>()
+        if (conditionObj.has("requiresCompleted")) {
+            val reqArr = conditionObj.optJSONArray("requiresCompleted")
+            if (reqArr != null) {
+                for (i in 0 until reqArr.length()) {
+                    requiresList.add(reqArr.optString(i))
+                }
+            } else {
+                // sometimes it's a single string
+                conditionObj.optString("requiresCompleted")?.let { if (it.isNotBlank()) requiresList.add(it) }
+            }
+        }
+
+        // question-check fields
+        val questionnaire = conditionObj.optString("questionnaire", null)
+        val questionId = conditionObj.optString("questionId", null)
+        val operator = conditionObj.optString("operator", null)
+        val value = conditionObj.optString("value", null)
+
+        val hasQuestionCheck = !questionnaire.isNullOrBlank() && !questionId.isNullOrBlank() && !operator.isNullOrBlank() && value != null
+
+        return when {
+            requiresList.isNotEmpty() && hasQuestionCheck -> {
+                QuestionItem.Condition.Combined(requiresList, QuestionItem.Condition.QuestionCondition(questionnaire!!, questionId!!, operator!!, value!!))
+            }
+            hasQuestionCheck -> {
+                QuestionItem.Condition.QuestionCondition(questionnaire!!, questionId!!, operator!!, value!!)
+            }
+            requiresList.isNotEmpty() -> {
+                QuestionItem.Condition.RequiresCompleted(requiresList)
+            }
+            else -> null
+        }
+    }
+
     private fun createQuestionnaireButtons() {
         buttonContainer.removeAllViews()
         dynamicButtons.clear()
@@ -129,12 +178,23 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
         }
 
         updateButtonTexts()
-        setButtonsEnabled(listOf(dynamicButtons.firstOrNull()).filterNotNull())
+
+        // Initial: enable those with AlwaysAvailable (falls vorhanden)
+        val alwaysButtons = questionnaireEntries.mapIndexedNotNull { idx, entry ->
+            val btn = dynamicButtons.getOrNull(idx)
+            if (entry.condition is QuestionItem.Condition.AlwaysAvailable) btn else null
+        }
+        setButtonsEnabled(alwaysButtons)
 
         dynamicButtons.forEach { button ->
             button.setOnClickListener {
+                // require a client code to start actual questionnaire (sichere Kontrolle)
+                val clientCode = editText.text.toString().trim()
+
+                GlobalValues.LAST_CLIENT_CODE = clientCode
                 startQuestionnaireForButton(button)
-                setButtonsEnabled(dynamicButtons.filter { it != button })
+                // disable other buttons while one questionnaire is open
+                setButtonsEnabled(dynamicButtons.filter { it == button })
             }
         }
     }
@@ -190,86 +250,143 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
                 withContext(Dispatchers.Main) {
                     val message = LanguageManager.getText(languageID, "no_profile")
                     Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
-                    setButtonsEnabled(listOf(dynamicButtons.firstOrNull()).filterNotNull())
+                    // enable only alwaysAvailable ones if no client found
+                    val alwaysButtons = questionnaireEntries.mapIndexedNotNull { idx, entry ->
+                        val btn = dynamicButtons.getOrNull(idx)
+                        if (entry.condition is QuestionItem.Condition.AlwaysAvailable) btn else null
+                    }
+                    setButtonsEnabled(alwaysButtons)
                 }
                 return@launch
             }
 
             withContext(Dispatchers.Main) {
                 updateMainButtonsState(true) // Datenbank vorhanden -> Buttons aktivieren
-                handleNormalLoad(clientCode)
+            }
+
+            handleNormalLoad(clientCode)
+        }
+    }
+
+    // Evaluierung der Bedingung: suspend, weil DB-Abfragen stattfinden.
+    private suspend fun evaluateCondition(
+        condition: QuestionItem.Condition?,
+        clientCode: String,
+        completedEntries: List<CompletedQuestionnaire> // Anpassung an deinem DAO-Objekt-Name
+    ): Boolean {
+        if (condition == null) return false
+
+        when (condition) {
+            is QuestionItem.Condition.AlwaysAvailable -> return true
+            is QuestionItem.Condition.RequiresCompleted -> {
+                // prüfen, ob alle required items in completedEntries vorhanden und isDone == true sind
+                val normalizedCompleted = completedEntries.map { normalizeQuestionnaireId(it.questionnaireId) }
+                return condition.required.all { req ->
+                    val nReq = normalizeQuestionnaireId(req)
+                    normalizedCompleted.any { it.contains(nReq) || nReq.contains(it) }
+                }
+            }
+            is QuestionItem.Condition.QuestionCondition -> {
+                // need to fetch the answer for that questionnaire/questionId
+                val answers = MyApp.database.answerDao().getAnswersForClientAndQuestionnaire(clientCode, condition.questionnaire)
+                val relevant = answers.find { it.questionId.endsWith(condition.questionId, ignoreCase = true) }
+                val answerValue = relevant?.answerValue ?: ""
+                return when (condition.operator) {
+                    "==" -> answerValue == condition.value
+                    "!=" -> answerValue != condition.value
+                    else -> false
+                }
+            }
+            is QuestionItem.Condition.Combined -> {
+                // Combined: requiresCompleted (if present) AND questionCheck must match
+                val reqOk = if (condition.requiresCompleted.isNullOrEmpty()) true
+                else {
+                    val normalizedCompleted = completedEntries.map { normalizeQuestionnaireId(it.questionnaireId) }
+                    condition.requiresCompleted.all { req ->
+                        val nReq = normalizeQuestionnaireId(req)
+                        normalizedCompleted.any { it.contains(nReq) || nReq.contains(it) }
+                    }
+                }
+                if (!reqOk) return false
+                // dann Frage-Check auswerten
+                val q = condition.questionCheck
+                if (q != null) {
+                    val answers = MyApp.database.answerDao().getAnswersForClientAndQuestionnaire(clientCode, q.questionnaire)
+                    val relevant = answers.find { it.questionId.endsWith(q.questionId, ignoreCase = true) }
+                    val answerValue = relevant?.answerValue ?: ""
+                    return when (q.operator) {
+                        "==" -> answerValue == q.value
+                        "!=" -> answerValue != q.value
+                        else -> false
+                    }
+                }
+                return reqOk
+            }
+            is QuestionItem.Condition.AnyOf -> {
+                // true, wenn irgendeine der Sub-Bedingungen erfüllt ist
+                for (sub in condition.conditions) {
+                    val subRes = evaluateCondition(sub, clientCode, completedEntries)
+                    if (subRes) return true
+                }
+                return false
             }
         }
     }
 
+    private fun normalizeQuestionnaireId(name: String): String {
+        return name.lowercase().removeSuffix(".json")
+    }
+
     private suspend fun handleNormalLoad(clientCode: String) {
-        val completedIds = withContext(Dispatchers.IO) {
-            MyApp.database.completedQuestionnaireDao().getCompletedQuestionnairesForClient(clientCode)
-        }
-
-        if (completedIds.isEmpty()) {
-            setButtonsEnabled(listOf(dynamicButtons.firstOrNull()).filterNotNull())
-            val message = LanguageManager.getText(languageID, "no_profile")
-            Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
-            return
-        }
-
-        val completedIndexes = completedIds.mapNotNull { id ->
-            questionnaireEntries.indexOfFirst { it.file.contains(id, ignoreCase = true) }.takeIf { it >= 0 }
-        }.sorted()
-
         val completedEntries = withContext(Dispatchers.IO) {
             MyApp.database.completedQuestionnaireDao().getAllForClient(clientCode)
         }
 
+        // fülle buttonPoints & INTEGRATION_INDEX_POINTS
         buttonPoints.clear()
         for (entry in completedEntries) {
             if (entry.isDone) {
                 buttonPoints[entry.questionnaireId] = entry.sumPoints ?: 0
-
                 if (entry.questionnaireId.contains("questionnaire_3_integration_index", ignoreCase = true)) {
                     INTEGRATION_INDEX_POINTS = entry.sumPoints
                 }
             }
         }
 
-        updateButtonTexts()
-
-        var nextIndex = (completedIndexes.lastOrNull() ?: -1) + 1
-
-        while (nextIndex < questionnaireEntries.size) {
-            val entry = questionnaireEntries[nextIndex]
-            val condition = entry.condition
-
-            if (condition != null) {
-                val answers = MyApp.database.answerDao().getAnswersForClientAndQuestionnaire(clientCode, condition.questionnaire)
-
-                val relevantAnswer = answers.find {
-                    it.questionId.endsWith(condition.questionId)
-                }
-
-                val answerValue = relevantAnswer?.answerValue ?: ""
-                val conditionMet = when (condition.operator) {
-                    "!=" -> answerValue != condition.value
-                    "==" -> answerValue == condition.value
-                    else -> true
-                }
-
-                if (conditionMet) break
-                else nextIndex++
-            } else {
-                break
-            }
+        withContext(Dispatchers.Main) {
+            updateButtonTexts()
         }
 
-        if (nextIndex >= questionnaireEntries.size) {
-            setButtonsEnabled(emptyList())
-            val message = LanguageManager.getText(languageID, "questionnaires_finished")
-            Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
-        } else {
-            val nextFileName = questionnaireEntries[nextIndex].file
-            val nextButton = questionnaireFiles.entries.firstOrNull { it.value == nextFileName }?.key
-            setButtonsEnabled(listOfNotNull(nextButton))
+        // für jeden Fragebogen prüfen, ob er aktiv sein darf
+        val enabledButtons = mutableListOf<Button>()
+        for ((idx, entry) in questionnaireEntries.withIndex()) {
+            val button = dynamicButtons.getOrNull(idx) ?: continue
+
+            // falls bereits erledigt: nicht anklickbar
+            val isCompleted = completedEntries.any { completed ->
+                normalizeQuestionnaireId(completed.questionnaireId).let { completedNorm ->
+                    val targetNorm = normalizeQuestionnaireId(entry.file)
+                    completedNorm.contains(targetNorm) || targetNorm.contains(completedNorm)
+                } && completed.isDone
+            }
+            if (isCompleted) {
+                // ausdrücklich deaktivieren
+                continue
+            }
+
+            // auswerten der Bedingung (suspend)
+            val condMet = evaluateCondition(entry.condition, clientCode, completedEntries)
+            if (condMet) enabledButtons.add(button)
+        }
+
+        withContext(Dispatchers.Main) {
+            if (enabledButtons.isEmpty()) {
+                setButtonsEnabled(emptyList())
+                val message = LanguageManager.getText(languageID, "questionnaires_finished")
+                Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
+            } else {
+                setButtonsEnabled(enabledButtons)
+            }
         }
     }
 
@@ -278,6 +395,7 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
 
             val entry = questionnaireEntries.firstOrNull { it.file == fileName }
 
+            // key ableiten
             val key = fileName.substringAfter("questionnaire_").substringAfter("_").removeSuffix(".json")
             var buttonText = LanguageManager.getText(languageID, key)
 
@@ -574,15 +692,12 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
     // --- Füge diese Funktion in deine Klasse ein ---
     private fun isDatabasePopulated(): Boolean {
         return try {
-            // Wir prüfen, ob die Datenbank mindestens eine nicht-interne Tabelle enthält.
-            // Das ist robust gegenüber verschiedenen Tabellennamen.
             val db = MyApp.database.openHelper.readableDatabase
             val cursor = db.query(
                 "SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%' AND name != 'room_master_table'"
             )
             cursor.use { it.count > 0 }
         } catch (e: Exception) {
-            // Falls etwas schiefgeht (z.B. DB noch nicht vorhanden), gilt: nicht vorhanden
             false
         }
     }
@@ -607,4 +722,4 @@ class HandlerOpeningScreen(private val activity: MainActivity) {
             button.alpha = if (isDatabaseAvailable) 1.0f else 0.5f
         }
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/dano/test1/QuestionnaireItem.kt b/app/src/main/java/com/dano/test1/QuestionnaireItem.kt
index ee5d716..1710b22 100644
--- a/app/src/main/java/com/dano/test1/QuestionnaireItem.kt
+++ b/app/src/main/java/com/dano/test1/QuestionnaireItem.kt
@@ -112,11 +112,22 @@ sealed class QuestionItem {
         val showPoints: Boolean = false  // neu
     )
 
-    data class Condition(
-        val questionnaire: String,
-        val questionId: String,
-        val operator: String,
-        val value: String
-    )
-}
+    // flexible Condition-Typen für die questionnaire_order.json
+    sealed class Condition {
+        object AlwaysAvailable : Condition()
+        data class RequiresCompleted(val required: List<String>) : Condition()
+        data class QuestionCondition(
+            val questionnaire: String,
+            val questionId: String,
+            val operator: String,
+            val value: String
+        ) : Condition()
 
+        data class Combined(
+            val requiresCompleted: List<String>?,
+            val questionCheck: QuestionCondition?
+        ) : Condition()
+
+        data class AnyOf(val conditions: List<Condition>) : Condition()
+    }
+}