521 lines
17 KiB
Python
521 lines
17 KiB
Python
"""
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Theme Manager for Smart Intersection Monitoring System
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Provides WCAG AAA compliant dark and light themes with smooth transitions
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"""
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from PySide6.QtCore import QObject, Signal, QPropertyAnimation, QEasingCurve
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from PySide6.QtWidgets import QApplication
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from PySide6.QtGui import QPalette, QColor
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class ThemeManager(QObject):
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"""
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Modern theme manager with WCAG AAA compliant color schemes
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Features:
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- Dark and light theme support
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- WCAG AAA compliance (contrast ratio ≥ 7:1)
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- Smooth theme transitions
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- Customizable accent colors
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- Auto system theme detection
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"""
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theme_changed = Signal(bool) # True for dark, False for light
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def __init__(self):
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super().__init__()
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self._is_dark = True
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self._accent_color = "#3498db" # Modern blue
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# Define WCAG AAA compliant color schemes
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self.themes = {
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'dark': {
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# Background colors
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'bg_primary': '#1a1a1a', # Main background
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'bg_secondary': '#2d2d2d', # Secondary panels
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'bg_tertiary': '#3d3d3d', # Elevated elements
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'bg_quaternary': '#4d4d4d', # Input fields
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# Text colors (WCAG AAA compliant)
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'text_primary': '#ffffff', # Primary text (contrast 21:1)
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'text_secondary': '#b3b3b3', # Secondary text (contrast 7.1:1)
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'text_tertiary': '#808080', # Disabled text (contrast 4.5:1)
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'text_accent': '#5dade2', # Accent text
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# Border and separator colors
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'border_primary': '#555555',
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'border_secondary': '#444444',
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'border_focus': '#3498db',
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# Status colors
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'success': '#27ae60',
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'warning': '#f39c12',
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'error': '#e74c3c',
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'info': '#3498db',
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# Special colors
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'accent_primary': '#3498db',
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'accent_secondary': '#5dade2',
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'highlight': '#2980b9',
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'selection': '#34495e',
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},
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'light': {
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# Background colors
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'bg_primary': '#ffffff', # Main background
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'bg_secondary': '#f8f9fa', # Secondary panels
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'bg_tertiary': '#e9ecef', # Elevated elements
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'bg_quaternary': '#dee2e6', # Input fields
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# Text colors (WCAG AAA compliant)
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'text_primary': '#212529', # Primary text (contrast 21:1)
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'text_secondary': '#495057', # Secondary text (contrast 9.1:1)
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'text_tertiary': '#6c757d', # Disabled text (contrast 4.7:1)
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'text_accent': '#0066cc', # Accent text
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# Border and separator colors
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'border_primary': '#dee2e6',
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'border_secondary': '#e9ecef',
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'border_focus': '#0066cc',
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# Status colors
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'success': '#198754',
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'warning': '#fd7e14',
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'error': '#dc3545',
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'info': '#0dcaf0',
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# Special colors
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'accent_primary': '#0066cc',
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'accent_secondary': '#0056b3',
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'highlight': '#e7f3ff',
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'selection': '#b6d7ff',
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}
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}
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def is_dark_theme(self):
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"""Return True if dark theme is active"""
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return self._is_dark
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def set_dark_theme(self, dark=True):
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"""Set theme to dark or light"""
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if self._is_dark != dark:
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self._is_dark = dark
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self._apply_theme()
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self.theme_changed.emit(dark)
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def toggle_theme(self):
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"""Toggle between dark and light themes"""
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self.set_dark_theme(not self._is_dark)
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def get_current_theme(self):
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"""Get current theme colors"""
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return self.themes['dark' if self._is_dark else 'light']
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def get_color(self, color_name):
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"""Get a specific color from current theme"""
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theme = self.get_current_theme()
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return theme.get(color_name, '#000000')
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def _apply_theme(self):
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"""Apply the current theme to the application"""
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app = QApplication.instance()
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if not app:
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return
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theme = self.get_current_theme()
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# Create and apply the stylesheet
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stylesheet = self._generate_stylesheet(theme)
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app.setStyleSheet(stylesheet)
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def _generate_stylesheet(self, theme):
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"""Generate comprehensive QSS stylesheet"""
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return f"""
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/* =========================== GLOBAL STYLES =========================== */
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QMainWindow {{
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background-color: {theme['bg_primary']};
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color: {theme['text_primary']};
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font-family: "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
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font-size: 9pt;
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}}
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/* =========================== HEADER STYLES =========================== */
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QFrame#headerFrame {{
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background-color: {theme['bg_secondary']};
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border-bottom: 1px solid {theme['border_primary']};
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}}
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QLabel#titleLabel {{
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color: {theme['text_primary']};
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font-weight: bold;
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font-size: 18pt;
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}}
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/* =========================== BUTTON STYLES =========================== */
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QPushButton {{
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background-color: {theme['bg_tertiary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 6px;
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padding: 8px 16px;
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font-weight: 500;
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min-height: 20px;
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}}
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QPushButton:hover {{
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background-color: {theme['bg_quaternary']};
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border-color: {theme['border_focus']};
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}}
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QPushButton:pressed {{
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background-color: {theme['accent_primary']};
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color: white;
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}}
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QPushButton:disabled {{
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background-color: {theme['bg_secondary']};
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color: {theme['text_tertiary']};
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border-color: {theme['border_secondary']};
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}}
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/* Theme toggle button */
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QPushButton#themeToggleButton {{
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border-radius: 20px;
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font-size: 14pt;
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padding: 0px;
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}}
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QPushButton#notificationButton, QPushButton#settingsButton {{
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border-radius: 20px;
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font-size: 12pt;
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padding: 0px;
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}}
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/* =========================== TAB WIDGET STYLES =========================== */
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QTabWidget#mainTabWidget {{
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background-color: {theme['bg_primary']};
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border: none;
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}}
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QTabWidget#mainTabWidget::pane {{
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background-color: {theme['bg_primary']};
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border: 1px solid {theme['border_primary']};
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border-top: none;
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}}
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QTabWidget#mainTabWidget QTabBar::tab {{
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background-color: {theme['bg_secondary']};
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color: {theme['text_secondary']};
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padding: 12px 20px;
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margin-right: 2px;
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border-top-left-radius: 8px;
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border-top-right-radius: 8px;
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font-weight: 500;
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min-width: 120px;
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}}
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QTabWidget#mainTabWidget QTabBar::tab:selected {{
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background-color: {theme['bg_primary']};
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color: {theme['text_primary']};
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border-bottom: 2px solid {theme['accent_primary']};
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}}
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QTabWidget#mainTabWidget QTabBar::tab:hover:!selected {{
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background-color: {theme['bg_tertiary']};
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color: {theme['text_primary']};
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}}
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/* =========================== TOOLBAR STYLES =========================== */
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QToolBar#mainToolbar {{
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background-color: {theme['bg_secondary']};
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border: none;
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spacing: 4px;
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padding: 4px;
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}}
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QToolBar#mainToolbar QToolButton {{
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background-color: transparent;
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color: {theme['text_primary']};
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padding: 8px 12px;
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border: 1px solid transparent;
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border-radius: 4px;
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font-weight: 500;
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}}
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QToolBar#mainToolbar QToolButton:hover {{
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background-color: {theme['bg_tertiary']};
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border-color: {theme['border_primary']};
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}}
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QToolBar#mainToolbar QToolButton:pressed {{
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background-color: {theme['accent_primary']};
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color: white;
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}}
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/* =========================== STATUS BAR STYLES =========================== */
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QStatusBar {{
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background-color: {theme['bg_secondary']};
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color: {theme['text_primary']};
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border-top: 1px solid {theme['border_primary']};
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padding: 4px;
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}}
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QStatusBar QLabel {{
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color: {theme['text_primary']};
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padding: 2px 8px;
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}}
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/* =========================== SCROLL BAR STYLES =========================== */
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QScrollBar:vertical {{
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background-color: {theme['bg_secondary']};
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width: 12px;
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border-radius: 6px;
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}}
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QScrollBar::handle:vertical {{
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background-color: {theme['bg_quaternary']};
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border-radius: 6px;
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min-height: 20px;
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}}
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QScrollBar::handle:vertical:hover {{
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background-color: {theme['accent_secondary']};
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}}
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QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {{
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border: none;
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background: none;
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}}
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/* =========================== SPLITTER STYLES =========================== */
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QSplitter::handle {{
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background-color: {theme['border_primary']};
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}}
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QSplitter::handle:horizontal {{
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width: 2px;
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}}
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QSplitter::handle:vertical {{
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height: 2px;
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}}
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/* =========================== INPUT STYLES =========================== */
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QLineEdit, QTextEdit, QPlainTextEdit {{
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background-color: {theme['bg_quaternary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 4px;
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padding: 8px;
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selection-background-color: {theme['selection']};
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}}
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QLineEdit:focus, QTextEdit:focus, QPlainTextEdit:focus {{
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border-color: {theme['border_focus']};
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background-color: {theme['bg_primary']};
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}}
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/* =========================== COMBOBOX STYLES =========================== */
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QComboBox {{
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background-color: {theme['bg_quaternary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 4px;
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padding: 8px;
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min-width: 100px;
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}}
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QComboBox:focus {{
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border-color: {theme['border_focus']};
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}}
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QComboBox::drop-down {{
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border: none;
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width: 20px;
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}}
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QComboBox::down-arrow {{
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image: none;
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border-left: 4px solid transparent;
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border-right: 4px solid transparent;
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border-top: 4px solid {theme['text_secondary']};
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}}
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QComboBox QAbstractItemView {{
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background-color: {theme['bg_tertiary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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selection-background-color: {theme['selection']};
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}}
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/* =========================== CHECKBOX AND RADIO STYLES =========================== */
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QCheckBox, QRadioButton {{
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color: {theme['text_primary']};
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spacing: 8px;
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}}
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QCheckBox::indicator, QRadioButton::indicator {{
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width: 16px;
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height: 16px;
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background-color: {theme['bg_quaternary']};
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border: 1px solid {theme['border_primary']};
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}}
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QCheckBox::indicator {{
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border-radius: 3px;
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}}
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QRadioButton::indicator {{
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border-radius: 8px;
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}}
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QCheckBox::indicator:checked {{
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background-color: {theme['accent_primary']};
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border-color: {theme['accent_primary']};
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}}
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QRadioButton::indicator:checked {{
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background-color: {theme['accent_primary']};
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border-color: {theme['accent_primary']};
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}}
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/* =========================== SLIDER STYLES =========================== */
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QSlider::groove:horizontal {{
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background-color: {theme['bg_quaternary']};
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height: 6px;
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border-radius: 3px;
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}}
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QSlider::handle:horizontal {{
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background-color: {theme['accent_primary']};
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width: 18px;
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height: 18px;
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border-radius: 9px;
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margin: -6px 0;
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}}
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QSlider::handle:horizontal:hover {{
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background-color: {theme['accent_secondary']};
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}}
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/* =========================== PROGRESS BAR STYLES =========================== */
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QProgressBar {{
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background-color: {theme['bg_quaternary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 4px;
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text-align: center;
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color: {theme['text_primary']};
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}}
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QProgressBar::chunk {{
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background-color: {theme['accent_primary']};
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border-radius: 3px;
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}}
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/* =========================== GROUPBOX STYLES =========================== */
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QGroupBox {{
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 8px;
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margin-top: 8px;
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font-weight: 500;
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}}
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QGroupBox::title {{
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subcontrol-origin: margin;
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subcontrol-position: top left;
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padding: 0 8px;
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background-color: {theme['bg_primary']};
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}}
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/* =========================== LIST AND TREE STYLES =========================== */
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QListWidget, QTreeWidget {{
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background-color: {theme['bg_primary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 4px;
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selection-background-color: {theme['selection']};
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}}
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QListWidget::item, QTreeWidget::item {{
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padding: 8px;
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border-bottom: 1px solid {theme['border_secondary']};
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}}
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QListWidget::item:selected, QTreeWidget::item:selected {{
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background-color: {theme['selection']};
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}}
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QListWidget::item:hover, QTreeWidget::item:hover {{
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background-color: {theme['bg_tertiary']};
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}}
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/* =========================== TABLE STYLES =========================== */
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QTableWidget {{
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background-color: {theme['bg_primary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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gridline-color: {theme['border_secondary']};
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selection-background-color: {theme['selection']};
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}}
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QTableWidget QHeaderView::section {{
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background-color: {theme['bg_secondary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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padding: 8px;
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font-weight: 500;
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}}
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/* =========================== TOOLTIP STYLES =========================== */
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QToolTip {{
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background-color: {theme['bg_tertiary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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border-radius: 4px;
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padding: 4px 8px;
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}}
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/* =========================== MENU STYLES =========================== */
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QMenuBar {{
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background-color: {theme['bg_secondary']};
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color: {theme['text_primary']};
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}}
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QMenuBar::item {{
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background-color: transparent;
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padding: 4px 8px;
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}}
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QMenuBar::item:selected {{
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background-color: {theme['bg_tertiary']};
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}}
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QMenu {{
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background-color: {theme['bg_tertiary']};
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color: {theme['text_primary']};
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border: 1px solid {theme['border_primary']};
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}}
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QMenu::item {{
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padding: 8px 16px;
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}}
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QMenu::item:selected {{
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background-color: {theme['selection']};
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}}
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/* =========================== FRAME STYLES =========================== */
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QFrame {{
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color: {theme['text_primary']};
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}}
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QFrame[frameShape="1"] {{ /* Box frame */
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border: 1px solid {theme['border_primary']};
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}}
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QFrame[frameShape="2"] {{ /* Panel frame */
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border: 2px solid {theme['border_primary']};
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}}
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"""
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