diff --git a/CLAUDE.md b/CLAUDE.md
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-# CLAUDE.md
-
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Development Commands
-
-- **Build**: Compile the GTK application using the Makefile:
-  ```sh
-  make
-  ```
-  Or manually with gcc:
-  ```sh
-  gcc -o sprechen sprechen.c `pkg-config --cflags --libs gtk4`
-  ```
-
-- **Run**: Execute the built binary:
-  ```sh
-  make run
-  ```
-  or
-  ```sh
-  ./sprechen
-  ```
-
-- **Clean**: Remove compiled binaries:
-  ```sh
-  make clean
-  ```
-  or
-  ```sh
-  rm -f sprechen
-  ```
-
-- **Format**: If using clang-format, run:
-  ```sh
-  clang-format -i *.c *.h
-  ```
-
-- **Lint**: Use `clang-tidy` or `cppcheck` for static analysis:
-  ```sh
-  clang-tidy sprechen.c -- `pkg-config --cflags gtk4`
-  ```
-  or
-  ```sh
-  cppcheck --enable=all sprechen.c
-  ```
-
-- **Test**: Currently no test framework is integrated. To add unit tests, consider using a lightweight framework like `check` or `cmocka`. Tests can be compiled and run similarly.
-
-## Project Structure
-
-- **Root**: Contains the CLAUDE.md, README.md, .gitignore, LICENSE, Makefile, and source files.
-- **Source**: The main application resides in a single C file (`sprechen.c`) that uses GTK 4 for the graphical interface.
-- **Build Artifacts**: Compiled binaries are placed in the project root by default; consider using a `build/` directory for out-of-source builds.
-- **Dependencies**: Requires GTK 4 development libraries. On macOS, install via Homebrew: `brew install gtk4`. On Linux, use your package manager (e.g., `sudo apt install libgtk-4-dev`).
-
-## Architecture Overview
-
-The application is a simple GUI program written in C using GTK 4. It features:
-- A main window with a title "Sprechen.c".
-- A vertical box layout containing a centered label with welcome text.
-- Custom CSS styling for a gradient background and styled label box.
-- The GTK application lifecycle is managed via `GtkApplication`, with activation callback setting up the UI.
-
-Future extensions may include:
-- Additional widgets for language lessons (buttons, text entry, progress bars).
-- Separation of UI code into multiple files (e.g., `ui.c`, `ui.h`).
-- Lesson data structures and loading from external files (JSON or plain text).
-- Internationalization support using gettext.
-
-## Notes
-
-- Ensure GTK 4 is installed and accessible via pkg-config.
-- The code adheres to GTK 4 conventions and uses CSS for styling.
-- When modifying the UI, consider keeping the CSS in a separate file for maintainability, though currently it is embedded for simplicity.
diff --git a/error.log b/error.log
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diff --git a/error.txt b/error.txt
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-Entering activate
-After gtk_window_present
diff --git a/sprechen b/sprechen
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