diff --git a/files/style.qss b/files/style.qss
new file mode 100644
index 0000000..31b0f1d
--- /dev/null
+++ b/files/style.qss
@@ -0,0 +1,188 @@
+/*
+ * Windows 10/11 Flat Aesthetic QSS for PySide6
+ * Accent Color: #0078D4
+ * Font: Segoe UI, sans-serif
+ */
+
+QWidget {
+    font-family: "Segoe UI", "sans-serif";
+    font-size: 14px;
+    color: #000000;
+    background-color: #F3F3F3;
+}
+
+QDialog {
+    background-color: #FFFFFF;
+}
+
+QMainWindow {
+    background-color: #F3F3F3;
+}
+
+/* Push Buttons */
+QPushButton {
+    background-color: #E1E1E1;
+    border: 1px solid #ADADAD;
+    padding: 6px 12px;
+    border-radius: 4px;
+    color: #000000;
+    font-weight: 500;
+}
+
+QPushButton:hover {
+    background-color: #E5F1FB;
+    border: 1px solid #0078D4;
+}
+
+QPushButton:pressed {
+    background-color: #CCE4F7;
+    border: 1px solid #005499;
+}
+
+QPushButton:disabled {
+    background-color: #CCCCCC;
+    color: #888888;
+    border: 1px solid #BFBFBF;
+}
+
+/* Primary/Action Button (Optional: specific classes if needed) */
+QPushButton#primaryButton {
+    background-color: #0078D4;
+    color: #FFFFFF;
+    border: 1px solid #0078D4;
+}
+
+QPushButton#primaryButton:hover {
+    background-color: #106EBE;
+}
+
+QPushButton#primaryButton:pressed {
+    background-color: #005A9E;
+}
+
+/* Line Edits & Text Inputs */
+QLineEdit, QTextEdit, QPlainTextEdit, QSpinBox, QDoubleSpinBox, QComboBox, QDateEdit, QDateTimeEdit {
+    background-color: #FFFFFF;
+    border: 1px solid #8A8A8A;
+    border-radius: 4px;
+    padding: 4px;
+    color: #000000;
+}
+
+QLineEdit:focus, QTextEdit:focus, QPlainTextEdit:focus, QSpinBox:focus, QDoubleSpinBox:focus, QComboBox:focus, QDateEdit:focus, QDateTimeEdit:focus {
+    border: 2px solid #0078D4;
+    padding: 3px; /* Adjust padding to compensate for thicker border */
+}
+
+QLineEdit:disabled, QTextEdit:disabled, QComboBox:disabled, QDateEdit:disabled {
+    background-color: #F0F0F0;
+    color: #A0A0A0;
+    border: 1px solid #CCCCCC;
+}
+
+/* ComboBox Dropdown */
+QComboBox::drop-down {
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-left-width: 1px;
+    border-left-color: darkgray;
+    border-left-style: solid;
+    border-top-right-radius: 4px;
+    border-bottom-right-radius: 4px;
+    background-color: #E1E1E1;
+}
+
+QComboBox::drop-down:hover {
+    background-color: #E5F1FB;
+}
+
+QComboBox::down-arrow {
+    image: none; /* Can use custom SVG here if desired, but default is usually fine in Fusion */
+}
+
+/* Tables */
+QTableWidget, QTableView {
+    background-color: #FFFFFF;
+    alternate-background-color: #F9F9F9;
+    border: 1px solid #D0D0D0;
+    gridline-color: #E0E0E0;
+    selection-background-color: #0078D4;
+    selection-color: #FFFFFF;
+}
+
+QHeaderView::section {
+    background-color: #F0F0F0;
+    color: #333333;
+    padding: 4px;
+    border: 1px solid #D0D0D0;
+    font-weight: 600;
+}
+
+/* Tabs */
+QTabWidget::pane {
+    border: 1px solid #D0D0D0;
+    background-color: #FFFFFF;
+}
+
+QTabBar::tab {
+    background-color: #E1E1E1;
+    color: #000000;
+    border: 1px solid #D0D0D0;
+    border-bottom-color: #D0D0D0;
+    border-top-left-radius: 4px;
+    border-top-right-radius: 4px;
+    padding: 6px 12px;
+    margin-right: 2px;
+}
+
+QTabBar::tab:hover {
+    background-color: #E5F1FB;
+}
+
+QTabBar::tab:selected {
+    background-color: #FFFFFF;
+    border-bottom-color: #FFFFFF;
+    color: #0078D4;
+    font-weight: bold;
+}
+
+/* Group Boxes */
+QGroupBox {
+    border: 1px solid #D0D0D0;
+    border-radius: 4px;
+    margin-top: 10px;
+    font-weight: 600;
+}
+
+QGroupBox::title {
+    subcontrol-origin: margin;
+    subcontrol-position: top left;
+    padding: 0 3px;
+    color: #0078D4;
+}
+
+/* Checkboxes and Radio Buttons */
+/* Note: Not overriding ::indicator as requested to keep native rendering */
+QCheckBox, QRadioButton {
+    spacing: 5px;
+    color: #000000;
+}
+
+QCheckBox:disabled, QRadioButton:disabled {
+    color: #A0A0A0;
+}
+
+/* Progress Bar */
+QProgressBar {
+    border: 1px solid #8A8A8A;
+    border-radius: 4px;
+    text-align: center;
+    color: #000000;
+    background-color: #E1E1E1;
+}
+
+QProgressBar::chunk {
+    background-color: #0078D4;
+    border-radius: 2px;
+}
diff --git a/main.py b/main.py
index c7f54d0..c71499d 100644
--- a/main.py
+++ b/main.py
@@ -3556,6 +3556,18 @@ class Payment:
 if __name__ == "__main__":
     app = QtWidgets.QApplication(sys.argv)
     app.setStyle("Fusion")
+
+    # Load and apply modern Windows 10/11 QSS style
+    style_path = Path(__file__).parent / "files" / "style.qss"
+    try:
+        if style_path.exists():
+            with open(style_path, "r", encoding="utf-8") as f:
+                app.setStyleSheet(f.read())
+        else:
+            logger.warning(f"Stylesheet not found at {style_path}")
+    except Exception as e:
+        logger.error(f"Failed to load stylesheet: {e}")
+
     auth = AuthForm()
     auth.show()
     auth.ui.label_9.setText(system.database)
diff --git a/ui_modernization.patch b/ui_modernization.patch
new file mode 100644
index 0000000..0c27b49
--- /dev/null
+++ b/ui_modernization.patch
@@ -0,0 +1,217 @@
+diff --git a/files/style.qss b/files/style.qss
+new file mode 100644
+index 0000000..1535f17
+--- /dev/null
++++ b/files/style.qss
+@@ -0,0 +1,188 @@
++/*
++ * Windows 10/11 Flat Aesthetic QSS for PySide6
++ * Accent Color: #0078D4
++ * Font: Segoe UI, sans-serif
++ */
++
++QWidget {
++    font-family: "Segoe UI", "sans-serif";
++    font-size: 14px;
++    color: #000000;
++    background-color: #F3F3F3;
++}
++
++QDialog {
++    background-color: #FFFFFF;
++}
++
++QMainWindow {
++    background-color: #F3F3F3;
++}
++
++/* Push Buttons */
++QPushButton {
++    background-color: #E1E1E1;
++    border: 1px solid #ADADAD;
++    padding: 6px 12px;
++    border-radius: 4px;
++    color: #000000;
++    font-weight: 500;
++}
++
++QPushButton:hover {
++    background-color: #E5F1FB;
++    border: 1px solid #0078D4;
++}
++
++QPushButton:pressed {
++    background-color: #CCE4F7;
++    border: 1px solid #005499;
++}
++
++QPushButton:disabled {
++    background-color: #CCCCCC;
++    color: #888888;
++    border: 1px solid #BFBFBF;
++}
++
++/* Primary/Action Button (Optional: specific classes if needed) */
++QPushButton#primaryButton {
++    background-color: #0078D4;
++    color: #FFFFFF;
++    border: 1px solid #0078D4;
++}
++
++QPushButton#primaryButton:hover {
++    background-color: #106EBE;
++}
++
++QPushButton#primaryButton:pressed {
++    background-color: #005A9E;
++}
++
++/* Line Edits & Text Inputs */
++QLineEdit, QTextEdit, QPlainTextEdit, QSpinBox, QDoubleSpinBox, QComboBox, QDateEdit, QDateTimeEdit {
++    background-color: #FFFFFF;
++    border: 1px solid #8A8A8A;
++    border-radius: 4px;
++    padding: 4px;
++    color: #000000;
++}
++
++QLineEdit:focus, QTextEdit:focus, QPlainTextEdit:focus, QSpinBox:focus, QDoubleSpinBox:focus, QComboBox:focus, QDateEdit:focus, QDateTimeEdit:focus {
++    border: 2px solid #0078D4;
++    padding: 3px; /* Adjust padding to compensate for thicker border */
++}
++
++QLineEdit:disabled, QTextEdit:disabled, QComboBox:disabled, QDateEdit:disabled {
++    background-color: #F0F0F0;
++    color: #A0A0A0;
++    border: 1px solid #CCCCCC;
++}
++
++/* ComboBox Dropdown */
++QComboBox::drop-down {
++    subcontrol-origin: padding;
++    subcontrol-position: top right;
++    width: 20px;
++    border-left-width: 1px;
++    border-left-color: darkgray;
++    border-left-style: solid;
++    border-top-right-radius: 4px;
++    border-bottom-right-radius: 4px;
++    background-color: #E1E1E1;
++}
++
++QComboBox::drop-down:hover {
++    background-color: #E5F1FB;
++}
++
++QComboBox::down-arrow {
++    image: none; /* Can use custom SVG here if desired, but default is usually fine in Fusion */
++}
++
++/* Tables */
++QTableWidget, QTableView {
++    background-color: #FFFFFF;
++    alternate-background-color: #F9F9F9;
++    border: 1px solid #D0D0D0;
++    gridline-color: #E0E0E0;
++    selection-background-color: #0078D4;
++    selection-color: #FFFFFF;
++}
++
++QHeaderView::section {
++    background-color: #F0F0F0;
++    color: #333333;
++    padding: 4px;
++    border: 1px solid #D0D0D0;
++    font-weight: 600;
++}
++
++/* Tabs */
++QTabWidget::pane {
++    border: 1px solid #D0D0D0;
++    background-color: #FFFFFF;
++}
++
++QTabBar::tab {
++    background-color: #E1E1E1;
++    color: #000000;
++    border: 1px solid #D0D0D0;
++    border-bottom-color: #D0D0D0;
++    border-top-left-radius: 4px;
++    border-top-right-radius: 4px;
++    padding: 6px 12px;
++    margin-right: 2px;
++}
++
++QTabBar::tab:hover {
++    background-color: #E5F1FB;
++}
++
++QTabBar::tab:selected {
++    background-color: #FFFFFF;
++    border-bottom-color: #FFFFFF;
++    color: #0078D4;
++    font-weight: bold;
++}
++
++/* Group Boxes */
++QGroupBox {
++    border: 1px solid #D0D0D0;
++    border-radius: 4px;
++    margin-top: 10px;
++    font-weight: 600;
++}
++
++QGroupBox::title {
++    subcontrol-origin: margin;
++    subcontrol-position: top left;
++    padding: 0 3px;
++    color: #0078D4;
++}
++
++/* Checkboxes and Radio Buttons */
++/* Note: Not overriding ::indicator as requested to keep native rendering */
++QCheckBox, QRadioButton {
++    spacing: 5px;
++    color: #000000;
++}
++
++QCheckBox:disabled, QRadioButton:disabled {
++    color: #A0A0A0;
++}
++
++/* Progress Bar */
++QProgressBar {
++    border: 1px solid #8A8A8A;
++    border-radius: 4px;
++    text-align: center;
++    color: #000000;
++    background-color: #E1E1E1;
++}
++
++QProgressBar::chunk {
++    background-color: #0078D4;
++    border-radius: 2px;
++}
+diff --git a/main.py b/main.py
+index c7f54d0..29d065e 100644
+--- a/main.py
++++ b/main.py
+@@ -3556,6 +3556,18 @@ class Payment:
+ if __name__ == "__main__":
+     app = QtWidgets.QApplication(sys.argv)
+     app.setStyle("Fusion")
++
++    # Load and apply modern Windows 10/11 QSS style
++    style_path = Path(__file__).parent / "files" / "style.qss"
++    try:
++        if style_path.exists():
++            with open(style_path, "r", encoding="utf-8") as f:
++                app.setStyleSheet(f.read())
++        else:
++            logger.warning(f"Stylesheet not found at {style_path}")
++    except Exception as e:
++        logger.error(f"Failed to load stylesheet: {e}")
++
+     auth = AuthForm()
+     auth.show()
+     auth.ui.label_9.setText(system.database)