diff --git a/R/_funktionen/f_airdatepicker.R b/R/_funktionen/f_airdatepicker.R
new file mode 100644
index 0000000..d1c2752
--- /dev/null
+++ b/R/_funktionen/f_airdatepicker.R
@@ -0,0 +1,35 @@
+##
+## Datum: 2024-10-17_11-38 
+## Name: Christian Oswald
+## Projekt:  etatverwaltung
+## Datei:  f_airdatepicker.R
+## Kommentar: Funktionen für den Airdatepicker
+##
+
+## * Update unter Berücksichtigung nicht vorhandern Werte
+f_updateAirdate <- function(session, id, wert){
+  if(is.na(wert)){
+    updateAirDateInput(session, id, clear = TRUE)
+  }else{
+    updateAirDateInput(session, id, value = wert)
+  }
+}
+
+## * Format für den Picker
+f_airdatepicker_UI <- function(id, label, value) {
+  ns <- NS(id)
+  airDatepickerInput(
+    id,
+    label = label, 
+    value = value, 
+    width = "100%",
+    update_on = "close",
+    readonly = FALSE,  # Manuelle Eingabe erlauben
+    onkeydown = "Shiny.setInputValue(this.id, this.value, {priority: 'event'});",  # Übergabe an Shiny
+    
+    
+    todayButton = T)
+}
+
+# f_airdatepicker_UI(id, label, value)
+
diff --git a/R/_funktionen/f_table.R b/R/_funktionen/f_table.R
new file mode 100644
index 0000000..2419b7e
--- /dev/null
+++ b/R/_funktionen/f_table.R
@@ -0,0 +1,20 @@
+
+f_reactable <- function(daten, coldefs = NULL){
+  reactable(daten,
+    selection = "single",
+    bordered = TRUE,
+    defaultPageSize = 17,
+    filterable = TRUE,
+    highlight = TRUE,
+    striped = F,
+    theme = reactableTheme(
+      highlightColor = "#00f200",
+      borderColor = "#dfe2e5",
+      rowSelectedStyle = list(backgroundColor = "#98F5FF"),
+    ),
+    compact = TRUE,
+    rowStyle = list(cursor = "pointer"),
+    onClick = "select",
+    columns = coldefs
+  )
+}
diff --git a/R/accounts/accounts.R b/R/accounts/accounts.R
index a098629..0cb0dd2 100644
--- a/R/accounts/accounts.R
+++ b/R/accounts/accounts.R
@@ -6,8 +6,8 @@ read_accounts <-  function(conn){
 
 get_account_choices <- function(conn) {
   tbl(conn, "accounts") |>
-    select(id, konto) |>
+    select(id, account_name) |>
     collect() |>
-    arrange(konto) |>
-    (\(df) setNames(df$id, df$konto))()
+    arrange(account_name) |>
+    (\(df) setNames(df$id, df$account_name))()
 }
diff --git a/R/buchungen_mod.R b/R/buchungen_mod.R
index c335c3e..5e6578e 100644
--- a/R/buchungen_mod.R
+++ b/R/buchungen_mod.R
@@ -1,92 +1,48 @@
 buchungenUI <- function(id) {
   ns <- NS(id)
   tagList(
-    reactableOutput(ns("buchungen_table"))
+    reactableOutput(ns("buchungen_table")),
+    reactableOutput(ns("details_table")),
+    postingModuleUI(ns("posting_modal"))
   )
 }
 
+
 buchungenServer <- function(id) {
-  moduleServer( id, function(input, output, session) {
+  moduleServer(id, function(input, output, session) {
     ns <- session$ns 
     
     postings <- reactiveVal(read_buch_tabelle(conn))
-
+    
+    # NEU: Eine reactive variable für die ID, die wir editieren wollen
+    # current_entry_id <- reactiveVal(NULL)
+    
+    # NEU: Den Modul-Server EINMALIG hier oben starten (nicht im Observer!)
+    # entryEditServer("entry_edit", entry_id = current_entry_id, conn = conn)
     
     output$buchungen_table <- renderReactable({
-      reactable(
-        postings(),
-        onClick = "expand",
-        selection = "single", 
-        details = function(index) {
-          entry_id <- postings()$entry_id[index]
-          detail_rows <- postings()[postings()$entry_id == entry_id, ]
-          
-          div(
-            style = "padding: 10px; background: #f4f4f4; border-left: 4px solid #3c8dbc; max-width: 800px; margin-left: auto",
-            
-            reactable(
-              dplyr::select(detail_rows, konto, projektname, amount),
-              fullWidth = TRUE,
-              columns = list(
-                konto          = colDef(name = "Konto",     minWidth = 150),
-                projektname        = colDef(name = "Projekt",       minWidth = 150),
-                amount         = colDef(name = "Betrag",        minWidth = 80)
-              )
-            )
-          )
-        },
-        columns = list(
-          id = colDef(name = "ID", minWidth = 80),
-          valuta = colDef(name = "Wertstellung", minWidth = 80),
-          konto = colDef(name = "Kontoname", minWidth = 200),
-          entry_id = colDef(show = FALSE)
-        )
-      )
+      # req(postings()) 
+      f_reactable(postings(), coldefs = coldef_entries_tabelle)
     })
     
     # Modal zum editieren
     selected <- reactive(getReactableState("buchungen_table", "selected"))
-    observeEvent(selected(),{
-      idwert <- postings()[selected(), "id"]
-      selected_row <- read_posting(conn, idwert) %>%
-        mutate(verzicht = ifelse(is.na(verzicht), F, verzicht))
-      showModal(modalDialog(
-        title = "Buchung bearbeiten",
-        size = "l",
-        tags$style(HTML(".modal-dialog { max-width: 90% !important; width: 90% !important; }")),
-        
-        entryEditUI(ns("entry_edit")),
-        footer = tagList(
-          modalButton("Abbrechen"),
-          actionButton(ns("speichern"), "Speichern")
-        )
-      ))
-      
-      entryEditServer("entry_edit", entry_id = selected_row$entry_id, conn = conn)
-      
-    }, ignoreInit = TRUE)
     
-    observeEvent(input$speichern, {
-      browser()
-      dbExecute(conn, "UPDATE postings SET 
-    account_id = ?, project_id = ?, amount = ?, valuta = ?,
-    notiz = ?, rechnungsnummer = ?, betrag_muenzen = ?, verzicht = ?
-    WHERE id = ?",
-        params = list(
-          input$account_id, input$project_id, input$amount, input$valuta,
-          input$notiz, input$rechnungsnummer, input$betrag_muenzen, input$verzicht,
-          selected_row$id
-        )
+    observeEvent(selected(), {
+      idwert <-  postings()[selected(),"entry_id"] %>% pull
+      details <- read_buch_tabelle(conn, trans_id = idwert)
+      output$details_table <- renderReactable(
+        f_reactable(details, coldefs = coldef_entries_tabelle)
       )
       
-      removeModal()
-      buchungen(read_buch_tabelle(conn))  # Tabelle neu laden
+    })
+    
+    selected_det <- reactive(getReactableState("details_table", "selected"))
+    observeEvent(selected_det(),{
+      idwert <- postings()[selected(),"id"] %>% pull
+      postingModuleServer("posting_modal",conn, idwert)
     })
     
     
-    
-    
-    
-  }
-  )
+  })
 }
\ No newline at end of file
diff --git a/R/entry_edit_modal.R b/R/entry_edit_modal.R
index 51bf23b..f681f89 100644
--- a/R/entry_edit_modal.R
+++ b/R/entry_edit_modal.R
@@ -1,93 +1,51 @@
-# entry_edit_mod.R
-entryEditUI <- function(id) {
+
+# --- MODUL UI ---
+postingModuleUI <- function(id) {
   ns <- NS(id)
   tagList(
-    
-    uiOutput(ns("entry_ui")),
-    uiOutput(ns("postings_ui"))
+
   )
 }
 
-entryEditServer <- function(id, entry_id, conn) {
+# --- MODUL SERVER ---
+postingModuleServer <- function(id, conn, idwert) {
   moduleServer(id, function(input, output, session) {
-    ns <- session$ns
+    ns <- session$ns # Wichtig für das Namespacing innerhalb des Modals
+    record <- read_posting(conn, idwert)
+    trans <- dbxSelect(conn, paste0("SELECT * FROM entries WHERE id=", record$entry_id))
+    # Modal öffnen
     
-    entry_postings <- reactiveVal(read_postings_by_entry(conn, entry_id))
-    entry_data     <- reactiveVal(read_entry(conn, entry_id))
-    
-    output$entry_ui <- renderUI({
-      e <- entry_data()
-      tagList(
-        fluidRow(
-          column(6, selectizeInput(ns("contact_id"), "Kontakt", 
-            choices = get_contact_choices(conn),
-            selected = e$contact_id)),
-          column(6, textInput(ns("purpose"), "Verwendungszweck", value = e$purpose))
-        ),
-        hr()
-      )
-    })
-    
-    # Choices für contact nach dem Flush setzen
-    
-    
-    output$postings_ui <- renderUI({
-      alle <- entry_postings()
-      lapply(seq_len(nrow(alle)), function(i) {
-        print(paste("project selected:", alle$project_id[i]))
-        print(head(get_project_choices(conn)))
-        print(class(get_project_choices(conn)))
-        div(
-          style = "border-left: 3px solid #3c8dbc; padding: 5px; margin-bottom: 5px",
-          fluidRow(
-            column(3, 
-              selectInput(ns(paste0("account_id_", i)), "Konto", 
-                choices  = get_account_choices(conn),
-                selected = as.character(alle$account_id[i]))
-            ),
-            column(3, selectizeInput(ns(paste0("project_id_", i)), "Projekt", 
-              choices  = get_project_choices(conn),
-              selected = ifelse(is.na(alle$project_id[i]), "", as.character(alle$project_id[i])))
-            ),
-            column(2, numericInput(ns(paste0("amount_", i)),        "Betrag", value = alle$amount[i])),
-            column(3, textInput(ns(paste0("notiz_", i)),            "Notiz",  value = alle$notiz[i])),
-            column(1, actionButton(ns(paste0("delete_", i)), "", icon = icon("trash"), class = "btn-danger btn-sm"))
-          )
-        )
-      })
-    })
-    
-    # Choices befüllen nachdem renderUI fertig ist
-    observe({
-      alle <- entry_postings()
-      e    <- entry_data()
-      req(nrow(alle) > 0, nrow(e) > 0)
+    showModal(modalDialog(
+      title = "Buchung-Eingabe",
       
-      session$onFlushed(function() {
-        # Contact
-        updateSelectizeInput(session, "contact_id",
-          choices  = get_contact_choices(conn),
-          selected = e$contact_id)
-        
-        # Postings
-        lapply(seq_len(nrow(alle)), function(i) {
-          updateSelectizeInput(session, paste0("account_id_", i),
-            choices  = get_account_choices(conn),
-            selected = alle$account_id[i])
-          updateSelectizeInput(session, paste0("project_id_", i),
-            choices  = get_project_choices(conn),
-            selected = alle$project_id[i])
-        })
-      }, once = TRUE)
-    })
+      
+      f_airdatepicker_UI(ns("valuta"), "Wertstellung", record$valuta),
+      f_airdatepicker_UI(ns("buchungsdatum"), "Buchungsdatum", record$booking_date),
+      selectizeInput(ns("kontakt"), "Kontakt:",selected = trans$adress_id, choices = get_contact_choices(conn), width = "100%"),
+      selectizeInput(ns("konto"), "Kontoname:",selected = record$account_id, choices = get_account_choices(conn), width = "100%"),
+      selectizeInput(ns("projekt"), "Projektname", selected = NULL, choices = get_project_choices(conn), width = "100%"),
+      splitLayout(cellWidths = c("70%", "30%"), 
+        numericInput(ns("amount"), "Betrag:", value = record$amount, width = "100%"),
+        numericInput(ns("coin_share_amount"), "Münzne:", value = record$coin_share_amount, width = "100%")
+      ),
+      textAreaInput(ns("trans_notiz"), label= "Notiz (Transaktion)", value = trans$note, width = "100%"),
+      splitLayout(cellWidths = c("50%", "50%"), 
+        numericInput(ns("receipt_id"), "Umsatz_id:", value = record$receipt_id, width = "100%"),
+        numericInput(ns("wiso_id"), "Wiso_id:", value = record$wiso_id, width = "100%")
+      ),
+      # 
+      footer = tagList(
+        modalButton("Abbrechen"),
+        actionButton(ns("confirm"), "Bestätigen", class = "btn-success")
+      ),
+      easyClose = TRUE
+    ))
     
-    # Speichern-Logik
-    observeEvent(input$speichern, {
-      alle <- entry_postings()
-      lapply(seq_len(nrow(alle)), function(i) {
-        # update posting i in DB
-      })
+    # Aktion beim Bestätigen
+    observeEvent(input$confirm, ignoreInit = T, {
+      message("Eingabe im Modul ", id, ": ", input$user_name)
+      removeModal()
     })
-    
+    # 
   })
 }
\ No newline at end of file
diff --git a/R/postings/buchungen.R b/R/postings/buchungen.R
index 0abfcf7..580529c 100644
--- a/R/postings/buchungen.R
+++ b/R/postings/buchungen.R
@@ -1,5 +1,10 @@
-read_buch_tabelle <- function(conn){
-  postings <- tbl(conn, "postings")
+read_buch_tabelle <- function(conn, trans_id = NULL){
+  if(!is.null(trans_id)){
+    postings <- tbl(conn, "postings") %>%
+      filter(entry_id == trans_id)
+  } else {
+    postings <- tbl(conn, "postings")
+  }
   entries  <- tbl(conn, "entries")
   accounts <- tbl(conn, "accounts")
   projects <- tbl(conn, "projects")
@@ -9,14 +14,55 @@ read_buch_tabelle <- function(conn){
     left_join(contacts, by = c("contact_id" = "id")) |>  # contact_id jetzt verfügbar
     left_join(accounts, by = c("account_id" = "id")) |>
     left_join(projects, by = c("project_id" = "id")) |>
-    select(id, valuta, kontoname, projektname, display_name,  amount, entry_id) |>
-    collect() 
+    select(id, valuta, account_name, projektname, display_name,  amount, entry_id) |>
+    collect() %>%
+    mutate(saldo = 0)
 }
 
 read_posting <- function(conn, id){
   dbxSelect(conn, paste0("SELECT * FROM postings WHERE id =", id))
 }
-read_postings_by_entry <- function(conn, id){
-  dbxSelect(conn, paste0("SELECT * FROM postings WHERE entry_id =", id))
-}
-tbl(conn, "accounts") %>% collect %>% str
+
+
+coldef_entries_tabelle <- 
+  list(
+    id = colDef(name = "ID", width = 80),
+    valuta = colDef(name = "Wertstellung", width = 120),
+    account_name = colDef(name = "Kontoname", width = 200),
+    projektname = colDef(name = "Projektname", width = 150),
+    display_name = colDef(name = "Kontakt", width = 250),
+    amount = colDef(name = "Betrag", width = 120, 
+      format = colFormat(prefix = "", separators = TRUE, digits = 2),
+      style = function(value) {
+        color <- if (value < 0) "#e06666" else "#2b2b2b" # Rot bei negativ, sonst dunkelgrau
+        list(color = color, fontWeight = "bold")        # Gibt CSS-Styles zurück
+      }
+    ),
+    entry_id = colDef(name ="trans_id", width = 120),
+    saldo = colDef(
+      name = "Saldo",
+      width = 140,
+      html = TRUE,
+      cell = JS("
+    function(cellInfo, state) {
+      const page = state.page || 0
+      const pageSize = state.pageSize || state.sortedData.length
+      const globalIndex = page * pageSize + cellInfo.viewIndex
+
+      let total = 0
+      for (let i = 0; i <= globalIndex && i < state.sortedData.length; i++) {
+        total += Number(state.sortedData[i].amount || 0)
+      }
+
+      const color = total < 0 ? '#e06666' : '#2b2b2b'
+
+      return `<span style='color:${color}; font-weight:bold'>
+                ${total.toLocaleString('de-DE', {
+                  minimumFractionDigits: 2,
+                  maximumFractionDigits: 2
+                })}
+              </span>`
+    }
+  ")
+    )
+  )
diff --git a/R/projects/projects.R b/R/projects/projects.R
index be8d57a..a46e282 100644
--- a/R/projects/projects.R
+++ b/R/projects/projects.R
@@ -6,4 +6,4 @@ get_project_choices <- function(conn) {
   
   choices <- setNames(as.character(projekte$id), projekte$projektname)
   c("-" = "", choices)
-}
\ No newline at end of file
+}
diff --git a/db/development.sqlite3 b/db/development.sqlite3
new file mode 100644
index 0000000..e69de29
diff --git a/global.R b/global.R
index b31571e..cba5b65 100644
--- a/global.R
+++ b/global.R
@@ -1,6 +1,7 @@
 library("dbplyr")
 library("tidyverse")
 library("shiny")
+library("shinyWidgets")
 library("DBI")
 library("RSQLite")
 library("dbx")
@@ -15,5 +16,8 @@ conflicts_prefer(dplyr::filter)
 options(shiny.reactlog = TRUE)
 options(shiny.error = browser)
 
-conn <- dbConnect(RSQLite::SQLite(), "db/development.sqlite3")
+conn <- dbConnect(RSQLite::SQLite(), "db/development.sqlite")
 sourceDirectory("R/")
+
+dbReadTable(conn, "projects") %>% str
+dbGetQuery(conn, "PRAGMA table_info(postings);")