/* Light theme */
QWidget { font-size: 12px; color: #111827; }
QMainWindow { background: #f7f8fa; }
QToolBar { background: #ffffff; border-bottom: 1px solid #e5e7eb; padding: 4px; spacing: 6px; color: #111827; }
QGroupBox { margin-top: 12px; border: 1px solid #e5e7eb; border-radius: 6px; background: #ffffff; color: #111827; }
QGroupBox::title { subcontrol-origin: margin; left: 8px; padding: 0 4px; color: #374151; }
QLineEdit, QComboBox, QSpinBox { background: #ffffff; border: 1px solid #d1d5db; border-radius: 4px; padding: 6px 8px; color: #111827; }
QLineEdit:read-only { background: #f3f4f6; color: #6b7280; }
QComboBox::drop-down { border: none; }
QPushButton { background: #2563eb; color: #ffffff; border: none; border-radius: 6px; padding: 6px 12px; }
QPushButton:hover { background: #1d4ed8; }
QPushButton:disabled { background: #9ca3af; }
QTabWidget::pane { border: 1px solid #e5e7eb; top: -1px; background: #ffffff; }
QTabBar::tab { padding: 6px 12px; border: 1px solid #e5e7eb; border-bottom: none; background: #f9fafb; color: #111827; }
QTabBar::tab:selected { background: #ffffff; }
QHeaderView::section { background: #f3f4f6; padding: 6px; border: 1px solid #e5e7eb; color: #111827; }
QTableWidget { gridline-color: #e5e7eb; background: #ffffff; color: #111827; }
QScrollArea { background: transparent; border: none; color: #111827; }
QMenuBar { background: #ffffff; color: #111827; }
QMenuBar::item:selected { background: #e5e7eb; }
QMenu { background: #ffffff; color: #111827; border: 1px solid #e5e7eb; }
QMenu::item:selected { background: #e5e7eb; }
QStatusBar { background: #ffffff; border-top: 1px solid #e5e7eb; color: #111827; }