diff --git a/dtt4all_data/icons/bt.png b/dtt4all_data/icons/bt.png
index e82f889c..3d97a7cd 100644
Binary files a/dtt4all_data/icons/bt.png and b/dtt4all_data/icons/bt.png differ
diff --git a/dtt4all_data/icons/expert-b.png b/dtt4all_data/icons/expert-b.png
new file mode 100644
index 00000000..d6d926b9
Binary files /dev/null and b/dtt4all_data/icons/expert-b.png differ
diff --git a/dtt4all_data/icons/wifi.png b/dtt4all_data/icons/wifi.png
index 0d9e9314..3c408488 100644
Binary files a/dtt4all_data/icons/wifi.png and b/dtt4all_data/icons/wifi.png differ
diff --git a/main.py b/main.py
index 6dac5ac2..6265e025 100644
--- a/main.py
+++ b/main.py
@@ -401,8 +401,10 @@ def __init__(self, parent=None):
         self.log.setCheckable(True)
         self.log.setChecked(options.log_all)
         self.log.triggered.connect(self.changeLogMode)
-
-        self.expert = widgets.QAction(gui.QIcon("dtt4all_data/icons/expert.png"), _("Expert mode (enable writing)"), self)
+        if options.dark_mode:
+            self.expert = widgets.QAction(gui.QIcon("dtt4all_data/icons/expert-b.png"), _("Expert mode (enable writing)"), self)
+        else:
+            self.expert = widgets.QAction(gui.QIcon("dtt4all_data/icons/expert.png"), _("Expert mode (enable writing)"), self)
         self.expert.setCheckable(True)
         self.expert.setChecked(options.promode)
         self.expert.triggered.connect(self.changeUserMode)
@@ -443,9 +445,11 @@ def __init__(self, parent=None):
 
         self.toolbar.addSeparator()
         self.toolbar.addAction(self.log)
+        self.toolbar.addSeparator()
         self.toolbar.addAction(self.expert)
         self.toolbar.addSeparator()
         self.toolbar.addAction(self.autorefresh)
+        self.toolbar.addSeparator()
         self.toolbar.addAction(self.refresh)
         self.toolbar.addSeparator()
         self.toolbar.addAction(self.diagaction)
@@ -453,6 +457,7 @@ def __init__(self, parent=None):
         self.toolbar.addAction(self.hexinput)
         self.toolbar.addSeparator()
         self.toolbar.addAction(self.cominput)
+        self.toolbar.addSeparator()
         self.toolbar.addAction(self.fctrigger)
         self.toolbar.addSeparator()
         self.toolbar.addWidget(self.canlinecombo)
@@ -460,10 +465,10 @@ def __init__(self, parent=None):
         self.toolbar.addWidget(self.sdscombo)
         self.toolbar.addSeparator()
         self.toolbar.addWidget(self.zoominbutton)
+        self.toolbar.addSeparator()
         self.toolbar.addWidget(self.zoomoutbutton)
 
         if options.simulation_mode:
-            self.toolbar.addSeparator()
             self.ui_edit_button = widgets.QPushButton(_("UI Edit"))
             self.ui_edit_button.setCheckable(True)
             self.toolbar.addSeparator()
@@ -1154,10 +1159,11 @@ def set_dark_style(onoff):
     if (onoff):
         stylefile = core.QFile("qstyle.qss")
         stylefile.open(core.QFile.ReadOnly)
-
+        options.dark_mode = True
         StyleSheet = bytes(stylefile.readAll()).decode()
     else:
         StyleSheet = ""
+        options.dark_mode = False
 
     app.setStyleSheet(StyleSheet)
 
@@ -1558,8 +1564,8 @@ def demoMode(self):
     options.simultation_mode = True
     app = widgets.QApplication(sys.argv)
 
-    fsize = 10
-    fname = "Tahoma"
+    fsize = 9
+    fname = "Segoe UI"
 
     if sys.platform[:3] == "dar":
         fsize = 12
diff --git a/options.py b/options.py
index 08247428..c72e2745 100644
--- a/options.py
+++ b/options.py
@@ -21,6 +21,7 @@
 # KWP2000 Slow init
 opt_si = False
 report_data = True
+dark_mode = False
 ecus_dir = "ecus/"
 graphics_dir = "graphics/"
 last_error = ""
diff --git a/qstyle.qss b/qstyle.qss
index 10c2575a..e95ca015 100644
--- a/qstyle.qss
+++ b/qstyle.qss
@@ -1,484 +1,239 @@
-QToolTip
-{
-     border: 1px solid black;
-     background-color: #ffa02f;
-     padding: 1px;
-     border-radius: 3px;
-     opacity: 100;
+/* Styles for tooltips */
+QToolTip {
+    border: 1px solid black; /* Tooltip border */
+    background-color: #ffa02f; /* Tooltip background color */
+    padding: 1px; /* Internal padding */
+    border-radius: 3px; /* Rounded border */
 }
 
-QWidget
-{
-    color: #e1e1e1;
-    background-color: #323232;
+/* Styles for widgets in general */
+QWidget {
+    color: #e1e1e1; /* Text color */
+    background-color: #323232; /* Background color */
 }
 
-QWidget:item:hover
-{
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #ca0619);
-    color: #000000;
+/* Styles for widget items when hovered */
+QWidget:item:hover {
+    background-color: #ff7e00; /* Background color when hovered */
+    color: #000000; /* Text color when hovered */
 }
 
-QWidget:item:selected
-{
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
+/* Styles for selected widget items */
+QWidget:item:selected {
+    background-color: #ffa02f; /* Background color of selected item */
 }
 
-QMenuBar::item
-{
-    background: transparent;
+/* Styles for menu items in menu bar */
+QMenuBar::item,
+QMenuBar::item:selected {
+    background: transparent; /* Transparent background */
 }
 
-QMenuBar::item:selected
-{
-    background: transparent;
-    border: 1px solid #ffaa00;
+/* Styles for selected menu items */
+QMenuBar::item:selected {
+    border: 1px solid #ffaa00; /* Border of selected item */
 }
 
-QMenuBar::item:pressed
-{
-    background: #444;
-    border: 1px solid #000;
-    background-color: QLinearGradient(
-        x1:0, y1:0,
-        x2:0, y2:1,
-        stop:1 #212121,
-        stop:0.4 #343434/*,
-        stop:0.2 #343434,
-        stop:0.1 #ffaa00*/
-    );
-    margin-bottom:-1px;
-    padding-bottom:1px;
+/* Styles for menu items when pressed */
+QMenuBar::item:pressed {
+    background: #444; /* Background when pressed */
+    border: 1px solid #000; /* Border when pressed */
 }
 
-QMenu
-{
-    border: 1px solid #000;
+/* Styles for menus and their items */
+QMenu,
+QMenu::item {
+    border: 1px solid #000; /* Menu and item border */
 }
 
-QMenu::item
-{
-    padding: 2px 20px 2px 20px;
+/* Styles for menu items */
+QMenu::item {
+    padding: 2px 20px; /* Item padding */
 }
 
-QMenu::item:selected
-{
-    color: #000000;
+/* Styles for selected menu items */
+QMenu::item:selected {
+    color: #000000; /* Text color of selected item */
 }
 
-QWidget:disabled
-{
-    color: #808080;
-    background-color: #323232;
+/* Styles for disabled widgets */
+QWidget:disabled {
+    color: #808080; /* Text color of disabled widgets */
 }
 
-QAbstractItemView
-{
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #4d4d4d, stop: 0.1 #646464, stop: 1 #5d5d5d);
+/* Styles for abstract item view */
+QAbstractItemView {
+    background-color: #4d4d4d; /* Background color */
 }
 
-QWidget:focus
-{
-    /*border: 2px solid QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);*/
+/* Styles for line edit fields */
+QLineEdit,
+QPushButton,
+QComboBox,
+QScrollBar,
+QTextEdit,
+QPlainTextEdit,
+QProgressBar,
+QTabBar::tab,
+QDockWidget::title {
+    background-color: #242424; /* Background color */
 }
 
-QLineEdit
-{
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #4d4d4d, stop: 0 #646464, stop: 1 #5d5d5d);
-    padding: 1px;
-    border-style: solid;
-    border: 1px solid #1e1e1e;
-    border-radius: 5;
+/* Specific styles for QComboBox */
+QComboBox {
+    color: #e1e1e1; /* Text color */
+    border: 1px solid #8e8e1e; /* Border */
+    border-radius: 5px; /* Rounded border */
+    padding: 1px; /* Internal padding */
 }
 
-QPushButton
-{
-    color: #e1e1e1;
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #565656, stop: 0.1 #525252, stop: 0.5 #4e4e4e, stop: 0.9 #4a4a4a, stop: 1 #464646);
-    border-width: 1px;
-    border-color: #1e1e1e;
-    border-style: solid;
-    border-radius: 6;
-    padding: 3px;
-    font-size: 12px;
-    padding-left: 5px;
-    padding-right: 5px;
+/* Styles for QComboBox drop-down arrow */
+QComboBox::down-arrow {
+    image: url("dtt4all_data/icons/down_arrow.png"); /* Arrow icon */
 }
 
-QPushButton:pressed
-{
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #2d2d2d, stop: 0.1 #2b2b2b, stop: 0.5 #292929, stop: 0.9 #282828, stop: 1 #252525);
+/* Styles for QComboBox when pressed */
+QComboBox::on {
+    padding-top: 3px; /* Top padding */
+    padding-left: 4px; /* Left padding */
+    background-color: #000000; /* Background color when pressed */
+    selection-background-color: #ffaa00; /* Selection background color when pressed */
 }
 
-QComboBox
-{
-    selection-background-color: #ffaa00;
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #565656, stop: 0.1 #525252, stop: 0.5 #4e4e4e, stop: 0.9 #4a4a4a, stop: 1 #464646);
-    border-style: solid;
-    border: 1px solid #8e8e1e;
-    border-radius: 5;
-    padding: 1px 1px 1px 1px;
+/* Styles for QComboBox item view */
+QComboBox QAbstractItemView {
+    border: 2px solid darkgray; /* Item view border */
+    selection-background-color: #ffaa00; /* Selection background color */
+    background-color: #ffffff; /* Background color */
+    color: #000000; /* Text color */
 }
 
-QComboBox:hover,QPushButton:hover
-{
-    border: 2px solid QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
+/* Styles for focused group boxes and text areas */
+QGroupBox:focus,
+QTextEdit:focus {
+    border: 2px solid #ffa02f; /* Border */
 }
 
-QComboBox:on
-{
-    padding-top: 3px;
-    padding-left: 4px;
-    background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #2d2d2d, stop: 0.1 #2b2b2b, stop: 0.5 #292929, stop: 0.9 #282828, stop: 1 #252525);
-    selection-background-color: #ffaa00;
+/* Styles for horizontal and vertical scroll bars */
+QScrollBar:horizontal,
+QScrollBar:vertical {
+    border: 1px solid #222222; /* Border */
+    background: #484848; /* Background color */
 }
 
-QComboBox QAbstractItemView
-{
-    border: 2px solid darkgray;
-    selection-background-color: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
+/* Styles for scroll bar handles */
+QScrollBar::handle:horizontal,
+QScrollBar::handle:vertical {
+    background: #ffa02f; /* Scroll bar handle color */
+    border-radius: 2px; /* Rounded border */
 }
 
-QComboBox::drop-down
-{
-     subcontrol-origin: padding;
-     subcontrol-position: top right;
-     width: 15px;
-
-     border-left-width: 0px;
-     border-left-color: darkgray;
-     border-left-style: solid; /* just a single line */
-     border-top-right-radius: 3px; /* same radius as the QComboBox */
-     border-bottom-right-radius: 3px;
- }
-
-QComboBox::down-arrow
-{
-     image: url("dtt4all_data/icons/down_arrow.png");
-}
-
-QGroupBox:focus
-{
-border: 2px solid QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
-}
-
-QTextEdit:focus
-{
-    border: 2px solid QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
-}
-
-QScrollBar:horizontal {
-     border: 1px solid #222222;
-     background: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0.0 #121212, stop: 0.2 #282828, stop: 1 #484848);
-     height: 7px;
-     margin: 0px 16px 0 16px;
-}
-
-QScrollBar::handle:horizontal
-{
-      background: QLinearGradient( x1: 0, y1: 0, x2: 1, y2: 0, stop: 0 #ffa02f, stop: 0.5 #d7801a, stop: 1 #ffa02f);
-      min-height: 20px;
-      border-radius: 2px;
-}
-
-QScrollBar::add-line:horizontal {
-      border: 1px solid #1b1b19;
-      border-radius: 2px;
-      background: QLinearGradient( x1: 0, y1: 0, x2: 1, y2: 0, stop: 0 #ffa02f, stop: 1 #d7801a);
-      width: 14px;
-      subcontrol-position: right;
-      subcontrol-origin: margin;
-}
-
-QScrollBar::sub-line:horizontal {
-      border: 1px solid #1b1b19;
-      border-radius: 2px;
-      background: QLinearGradient( x1: 0, y1: 0, x2: 1, y2: 0, stop: 0 #ffa02f, stop: 1 #d7801a);
-      width: 14px;
-     subcontrol-position: left;
-     subcontrol-origin: margin;
-}
-
-QScrollBar::right-arrow:horizontal, QScrollBar::left-arrow:horizontal
-{
-      border: 1px solid black;
-      width: 1px;
-      height: 1px;
-      background: white;
-}
-
-QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal
-{
-      background: none;
+/* Styles for scroll bar arrows */
+QScrollBar::add-line:horizontal,
+QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical,
+QScrollBar::sub-line:vertical {
+    border: 1px solid #1b1b19; /* Border */
+    border-radius: 2px; /* Rounded border */
+    background: #ffa02f; /* Background color */
+    background-color: #000000; /* Background color */
 }
 
-QScrollBar:vertical
-{
-      background: QLinearGradient( x1: 0, y1: 0, x2: 1, y2: 0, stop: 0.0 #121212, stop: 0.2 #282828, stop: 1 #484848);
-      width: 7px;
-      margin: 16px 0 16px 0;
-      border: 1px solid #222222;
+/* Styles for scroll bar arrows */
+QScrollBar::right-arrow:horizontal,
+QScrollBar::left-arrow:horizontal,
+QScrollBar::up-arrow:vertical,
+QScrollBar::down-arrow:vertical {
+    width: 3px; /* Width */
+    height: 3px; /* Height */
+    background: white; /* Background color */
 }
 
-QScrollBar::handle:vertical
-{
-      background: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 0.5 #d7801a, stop: 1 #ffa02f);
-      min-height: 20px;
-      border-radius: 2px;
+/* Styles for scroll bar page areas */
+QScrollBar::add-page:horizontal,
+QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical,
+QScrollBar::sub-page:vertical {
+    background: transparent; /* Transparent background */
 }
 
-QScrollBar::add-line:vertical
-{
-      border: 1px solid #1b1b19;
-      border-radius: 2px;
-      background: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #ffa02f, stop: 1 #d7801a);
-      height: 14px;
-      subcontrol-position: bottom;
-      subcontrol-origin: margin;
-}
-
-QScrollBar::sub-line:vertical
-{
-      border: 1px solid #1b1b19;
-      border-radius: 2px;
-      background: QLinearGradient( x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #d7801a, stop: 1 #ffa02f);
-      height: 14px;
-      subcontrol-position: top;
-      subcontrol-origin: margin;
-}
-
-QScrollBar::up-arrow:vertical, QScrollBar::down-arrow:vertical
-{
-      border: 1px solid black;
-      width: 1px;
-      height: 1px;
-      background: white;
-}
-
-
-QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical
-{
-      background: none;
-}
-
-QTextEdit
-{
-    background-color: #242424;
-}
-
-QPlainTextEdit
-{
-    background-color: #242424;
-}
-
-QHeaderView::section
-{
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #616161, stop: 0.5 #505050, stop: 0.6 #434343, stop:1 #656565);
-    color: white;
-    padding-left: 4px;
-    border: 1px solid #6c6c6c;
-}
-
-QCheckBox:disabled
-{
-color: #414141;
-}
-
-QDockWidget::title
-{
-    text-align: center;
-    spacing: 3px; /* spacing between items in the tool bar */
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #323232, stop: 0.5 #242424, stop:1 #323232);
-}
-
-QDockWidget::close-button, QDockWidget::float-button
-{
-    text-align: center;
-    spacing: 1px; /* spacing between items in the tool bar */
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #323232, stop: 0.5 #242424, stop:1 #323232);
-}
-
-QDockWidget::close-button:hover, QDockWidget::float-button:hover
-{
-    background: #242424;
-}
-
-QDockWidget::close-button:pressed, QDockWidget::float-button:pressed
-{
-    padding: 1px -1px -1px 1px;
-}
-
-QMainWindow::separator
-{
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #161616, stop: 0.5 #151515, stop: 0.6 #212121, stop:1 #343434);
-    color: white;
-    padding-left: 4px;
-    border: 1px solid #4c4c4c;
-    spacing: 3px; /* spacing between items in the tool bar */
-}
-
-QMainWindow::separator:hover
-{
-
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #d7801a, stop:0.5 #b56c17 stop:1 #ffa02f);
-    color: white;
-    padding-left: 4px;
-    border: 1px solid #6c6c6c;
-    spacing: 3px; /* spacing between items in the tool bar */
-}
-
-QToolBar::handle
-{
-     spacing: 3px; /* spacing between items in the tool bar */
-     background: url("dtt4all_data/icons/handle.png");
-}
-
-QMenu::separator
-{
-    height: 2px;
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:0 #161616, stop: 0.5 #151515, stop: 0.6 #212121, stop:1 #343434);
-    color: white;
-    padding-left: 4px;
-    margin-left: 10px;
-    margin-right: 5px;
-}
-
-QProgressBar
-{
-    border: 2px solid gray;
-    border-radius: 5px;
-    text-align: center;
-}
-
-QProgressBar::chunk
-{
-    background-color: #d7801a;
-    width: 2.15px;
-    margin: 0.5px;
-}
-
-QTabBar::tab {
-    color: #b1b1b1;
-    border: 1px solid #444;
-    border-bottom-style: none;
-    background-color: #323232;
-    padding-left: 10px;
-    padding-right: 10px;
-    padding-top: 3px;
-    padding-bottom: 2px;
-    margin-right: -1px;
-}
-
-QTabWidget::pane {
-    border: 1px solid #444;
-    top: 1px;
-}
-
-QTabBar::tab:last
-{
-    margin-right: 0; /* the last selected tab has nothing to overlap with on the right */
-    border-top-right-radius: 3px;
-}
-
-QTabBar::tab:first:!selected
-{
- margin-left: 0px; /* the last selected tab has nothing to overlap with on the right */
-
-
-    border-top-left-radius: 3px;
-}
-
-QTabBar::tab:!selected
-{
-    color: #b1b1b1;
-    border-bottom-style: solid;
-    margin-top: 3px;
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:1 #212121, stop:.4 #343434);
+/* Styles for header sections, main window separators, and toolbars */
+QHeaderView::section,
+QMainWindow::separator,
+QToolBar {
+    background-color: #656565; /* Background color */
+    border: 1px solid #6c6c6c; /* Border */
 }
 
-QTabBar::tab:selected
-{
-    border-top-left-radius: 3px;
-    border-top-right-radius: 3px;
-    margin-bottom: 0px;
+/* Styles for main window separators when hovered */
+QMainWindow::separator:hover {
+    background-color: #ffa02f; /* Background color when hovered */
+    border: 1px solid #6c6c6c; /* Border when hovered */
 }
 
-QTabBar::tab:!selected:hover
-{
-    /*border-top: 2px solid #ffaa00;
-    padding-bottom: 3px;*/
-    border-top-left-radius: 3px;
-    border-top-right-radius: 3px;
-    background-color: QLinearGradient(x1:0, y1:0, x2:0, y2:1, stop:1 #212121, stop:0.4 #343434, stop:0.2 #343434, stop:0.1 #ffaa00);
+/* Styles for toolbar handles */
+QToolBar::handle {
+    background: url("dtt4all_data/icons/handle.png"); /* Handle icon */
 }
 
-QRadioButton::indicator:checked, QRadioButton::indicator:unchecked{
-    color: #b1b1b1;
-    background-color: #323232;
-    border: 1px solid #b1b1b1;
-    border-radius: 6px;
+/* Styles for progress bar chunks */
+QProgressBar::chunk {
+    background-color: #d7801a; /* Chunk color */
 }
 
-QRadioButton::indicator:checked
-{
-    background-color: qradialgradient(
-        cx: 0.5, cy: 0.5,
-        fx: 0.5, fy: 0.5,
-        radius: 1.0,
-        stop: 0.25 #ffaa00,
-        stop: 0.3 #323232
-    );
+/* Styles for QRadioButton, QCheckBox, QSpinBox, and QDoubleSpinBox indicators */
+QRadioButton::indicator,
+QCheckBox::indicator,
+QSpinBox,
+QDoubleSpinBox {
+    background-color: #323232; /* Background color */
+    border: 1px solid #b1b1b1; /* Border */
 }
 
-QCheckBox::indicator{
-    color: #e1e1e1;
-    background-color: #323232;
-    border: 1px solid #b1b1b1;
-    width: 9px;
-    height: 9px;
+/* Styles for checked and unchecked QRadioButton indicators */
+QRadioButton::indicator:checked,
+QRadioButton::indicator:unchecked {
+    background-color: #323232; /* Background color */
+    border-radius: 6px; /* Rounded border */
 }
 
-QSpinBox {
-    color: #e1e1e1;
-    background-color: #323232;
-    border: 1px solid #b1b1b1;
+/* Styles for checked QRadioButton indicators */
+QRadioButton::indicator:checked {
+    background-color: #ffaa00; /* Background color when checked */
 }
 
-QDoubleSpinBox {
-    color: #e1e1e1;
-    background-color: #323232;
-    border: 1px solid #b1b1b1;
+/* Styles for hovered QRadioButton and QCheckBox indicators */
+QRadioButton::indicator:hover,
+QCheckBox::indicator:hover {
+    border: 1px solid #ffaa00; /* Border when hovered */
 }
 
-QRadioButton::indicator
-{
-    border-radius: 6px;
+/* Styles for checked QCheckBox indicators */
+QCheckBox::indicator:checked {
+    image: url("dtt4all_data/icons/checkbox.png"); /* Checkbox icon */
 }
 
-QRadioButton::indicator:hover, QCheckBox::indicator:hover
-{
-    border: 1px solid #ffaa00;
+/* Styles for disabled QRadioButton and QCheckBox indicators */
+QCheckBox::indicator:disabled,
+QRadioButton::indicator:disabled {
+    border: 1px solid #444; /* Border */
 }
 
-QCheckBox::indicator:checked
-{
-    image:url("dtt4all_data/icons/checkbox.png");
+/* Styles for list views */
+QListView {
+    color: #e1e1e1; /* Text color */
 }
 
-QCheckBox::indicator:disabled, QRadioButton::indicator:disabled
-{
-    border: 1px solid #444;
+/* Styles for progress bars */
+QProgressBar {
+    border: 2px solid gray; /* Border */
+    border-radius: 5px; /* Rounded border */
+    text-align: center; /* Text alignment */
 }
 
-QToolBar {
-  background-color: #323232;
-  border-bottom: 1px solid #19232D;
-  padding: 2px;
-  font-weight: bold;
-  spacing: 2px;
+/* Styles for progress bar chunks */
+QProgressBar::chunk {
+    background-color: #ffaa00; /* Chunk color */
+    width: 5px; /* Width */
+    margin: 0.5px; /* Margin */
 }
-
-QListView
-{
-  color: #e1e1e1;
-}
\ No newline at end of file