theme

theme

Centralized theming engine for light and dark modes.

Provides color palettes, a theme-change signal, a color() accessor, and style generator functions that produce QSS for the current theme.

current_theme

current_theme()

Returns the name of the currently active theme.

ソースコード位置： src/constants/theme.py

def current_theme() -> ThemeName:
    """Returns the name of the currently active theme."""
    return _current_theme

set_theme

set_theme(name)

Switches the active theme and emits the changed signal.

ソースコード位置： src/constants/theme.py

def set_theme(name: ThemeName) -> None:
    """Switches the active theme and emits the changed signal."""
    global _current_theme  # noqa: PLW0603
    if name not in _PALETTES:
        logger.warning("Unknown theme '%s', ignoring.", name)
        return
    if name == _current_theme:
        return
    _current_theme = name
    theme_changed.emit(name)

_set_initial_theme

_set_initial_theme(name)

Sets the theme at startup without emitting a signal.

ソースコード位置： src/constants/theme.py

def _set_initial_theme(name: ThemeName) -> None:
    """Sets the theme at startup without emitting a signal."""
    global _current_theme  # noqa: PLW0603
    if name in _PALETTES:
        _current_theme = name

color

color(key)

Returns the color value for key in the current theme.

ソースコード位置： src/constants/theme.py

def color(key: str) -> str:
    """Returns the color value for *key* in the current theme."""
    return _PALETTES[_current_theme][key]

style_sidebar_list

style_sidebar_list()

QSS for the sidebar navigation list.

ソースコード位置： src/constants/theme.py

def style_sidebar_list() -> str:
    """QSS for the sidebar navigation list."""
    return f"""
        QListWidget {{
            background-color: {color("sidebar_bg")};
            color: {color("sidebar_text")};
            border: none;
            outline: none;
            font-size: 14px;
        }}
        QListWidget::item {{
            padding: 14px 24px;
            margin: 0px;
        }}
        QListWidget::item:selected {{
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
        }}
        QListWidget::item:hover:!selected {{
            background-color: rgba(255, 255, 255, 0.05);
        }}
        QListWidget::item:disabled {{
            color: {color("sidebar_disabled")};
            background-color: transparent;
        }}
    """

style_page_header

style_page_header()

QSS for page header labels.

ソースコード位置： src/constants/theme.py

def style_page_header() -> str:
    """QSS for page header labels."""
    return (
        f"font-size: 24px; font-weight: 400; color: {color('text_primary')};"
        " margin-bottom: 12px;"
    )

style_section_group

style_section_group()

QSS for bordered section cards.

ソースコード位置： src/constants/theme.py

def style_section_group() -> str:
    """QSS for bordered section cards."""
    return (
        f"QFrame {{ border: 1px solid {color('border_light')}; "
        f"border-radius: {RADIUS_BUTTON}px; "
        f"background-color: {color('component_bg')}; "
        f"color: {color('text_primary')}; }}"
    )

style_section_title

style_section_title()

QSS for section title labels.

ソースコード位置： src/constants/theme.py

def style_section_title() -> str:
    """QSS for section title labels."""
    return (
        f"font-weight: 500; font-size: 14px; color: {color('text_secondary')}; "
        "border: none; padding-bottom: 8px; text-transform: uppercase;"
        " letter-spacing: 1px;"
    )

style_list_widget

style_list_widget()

QSS for general list widgets (e.g. glossary sets).

ソースコード位置： src/constants/theme.py

def style_list_widget() -> str:
    """QSS for general list widgets (e.g. glossary sets)."""
    return f"""
        QListWidget {{
            border: 1px solid {color("border_light")};
            border-radius: {RADIUS_BUTTON}px;
            background-color: {color("component_bg")};
            color: {color("text_primary")};
            outline: none;
        }}
        QListWidget::item {{
            padding: 12px;
            color: {color("text_secondary")};
            border-radius: 8px;
            margin: 2px 4px;
        }}
        QListWidget::item:selected {{
            background-color: rgba(62, 121, 247, 0.1);
            color: {color("primary")};
            font-weight: 500;
        }}
        QListWidget::item:hover {{
            background-color: {color("hover_light")};
        }}
        QListWidget::item:disabled {{
            color: {color("disabled_text")};
            background-color: transparent;
        }}
        QListWidget::indicator {{
            width: 18px;
            height: 18px;
            border-radius: 4px;
            border: 1px solid {color("text_secondary")};
        }}
        QListWidget::indicator:unchecked {{
            background-color: {color("component_bg")};
        }}
        QListWidget::indicator:checked {{
            background-color: {color("primary")};
            image: url("{CHECK_PATH}");
        }}
        QListWidget::indicator:unchecked:hover,
        QListWidget::indicator:checked:hover {{
            border: 1px solid {color("primary")};
        }}
    """

style_checkbox

style_checkbox()

QSS for checkboxes.

ソースコード位置： src/constants/theme.py

def style_checkbox() -> str:
    """QSS for checkboxes."""
    return f"""
        QCheckBox {{
            spacing: 12px;
            color: {color("text_primary")};
            font-size: 14px;
            padding: 8px;
            background-color: {color("component_bg")};
            border: none;
        }}
        QCheckBox::indicator {{
            width: 20px;
            height: 20px;
            border-radius: 4px;
            border: 2px solid {color("outline")};
        }}
        QCheckBox::indicator:unchecked {{
            background-color: {color("component_bg")};
        }}
        QCheckBox::indicator:checked {{
            background-color: {color("primary")};
            border: 2px solid {color("primary")};
            image: url("{CHECK_PATH}");
        }}
        QCheckBox::indicator:unchecked:hover {{
            border-color: {color("primary")};
            background-color: {color("hover_light")};
        }}
        QCheckBox::indicator:checked:hover {{
            border-color: {color("primary")};
            background-color: {color("primary")};
        }}
        QCheckBox:disabled {{
            color: {color("disabled_text")};
        }}
        QCheckBox::indicator:disabled {{
            border-color: {color("disabled_text")};
            background-color: {color("disabled_bg")};
        }}
    """

style_card_light

style_card_light()

QSS for light-tinted card backgrounds.

ソースコード位置： src/constants/theme.py

def style_card_light() -> str:
    """QSS for light-tinted card backgrounds."""
    return (
        f"background-color: {color('disabled_bg')};"
        f" border-radius: {RADIUS_BUTTON}px; "
        f"border: none; color: {color('text_primary')};"
    )

style_card_header

style_card_header()

QSS for card header labels.

ソースコード位置： src/constants/theme.py

def style_card_header() -> str:
    """QSS for card header labels."""
    return (
        "font-size: 11px; font-weight: 600;"
        f" color: {color('text_secondary')};"
        " text-transform: uppercase;"
    )

style_link_button

style_link_button()

QSS for text-only link-style buttons (primary action variant).

ソースコード位置： src/constants/theme.py

def style_link_button() -> str:
    """QSS for text-only link-style buttons (primary action variant)."""
    return f"""
        QPushButton {{
            border: 1px solid transparent;
            background-color: transparent;
            font-size: 14px;
            color: {color("primary")};
            font-weight: 500;
            padding: 10px 12px;
            border-radius: {RADIUS_BUTTON}px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            color: {color("primary_light")};
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
        }}
    """

style_link_button_muted

style_link_button_muted()

QSS for text-only secondary-action link buttons.

Same shape as :func:style_link_button but uses text_secondary instead of the primary brand colour so a paired secondary action (Reset next to Browse, Cancel next to Confirm, etc.) reads as visually subordinate to the primary action. Hover lifts to text_primary rather than primary_light for the same reason.

ソースコード位置： src/constants/theme.py

def style_link_button_muted() -> str:
    """QSS for text-only secondary-action link buttons.

    Same shape as :func:`style_link_button` but uses
    ``text_secondary`` instead of the primary brand colour so a
    paired secondary action (Reset next to Browse, Cancel next to
    Confirm, etc.) reads as visually subordinate to the primary
    action.  Hover lifts to ``text_primary`` rather than
    ``primary_light`` for the same reason.
    """
    return f"""
        QPushButton {{
            border: 1px solid transparent;
            background-color: transparent;
            font-size: 14px;
            color: {color("text_secondary")};
            font-weight: 500;
            padding: 10px 12px;
            border-radius: {RADIUS_BUTTON}px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            color: {color("text_primary")};
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
        }}
    """

style_setting_container

style_setting_container()

QSS for settings section containers.

ソースコード位置： src/constants/theme.py

def style_setting_container() -> str:
    """QSS for settings section containers."""
    return f"background-color: {color('component_bg')}; border: none;"

style_input_label

style_input_label()

QSS for settings input labels.

ソースコード位置： src/constants/theme.py

def style_input_label() -> str:
    """QSS for settings input labels."""
    return (
        f"font-size: 14px; color: {color('text_secondary')};"
        f" font-weight: 500; padding-left: {LABEL_PADDING_LEFT}px;"
    )

style_input_field

style_input_field()

QSS for text input fields.

ソースコード位置： src/constants/theme.py

def style_input_field() -> str:
    """QSS for text input fields."""
    return f"""
        QLineEdit {{
            font-size: 14px;
            padding: 10px 16px;
            border: 1px solid {color("secondary")};
            border-radius: {RADIUS_BUTTON}px;
            background: {color("component_bg")};
            color: {color("text_primary")};
        }}
        QLineEdit:hover {{
            border: 1px solid {color("primary")};
        }}
        QLineEdit:focus {{
            border: 2px solid {color("primary")};
            padding: 9px 15px;
        }}
        QLineEdit:disabled {{
            background-color: {color("disabled_bg")};
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_setting_combo

style_setting_combo()

QSS for combo box dropdowns.

ソースコード位置： src/constants/theme.py

def style_setting_combo() -> str:
    """QSS for combo box dropdowns."""
    return f"""
        QComboBox {{
            font-size: 14px;
            /* Asymmetric padding: full 16px on the left for visual balance,
               minimal 4px on the right because the chevron sub-control
               already provides its own internal spacing.  Without this,
               long labels like "Chinese (Traditional)" truncate even
               though there's a visible gap before the chevron. */
            padding: 10px 4px 10px 16px;
            border: 1px solid {color("secondary")};
            border-radius: {RADIUS_BUTTON}px;
            background: {color("component_bg")};
            color: {color("text_primary")};
            combobox-popup: 0;
        }}
        QComboBox:hover {{
            border: 1px solid {color("primary")};
        }}
        QComboBox:focus {{
            border: 2px solid {color("primary")};
            padding: 9px 3px 9px 15px;
        }}
        QComboBox:on {{
            border: 2px solid {color("primary")};
            padding: 9px 3px 9px 15px;
        }}
        QComboBox:disabled {{
            background-color: {color("disabled_bg")};
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
        QComboBox::drop-down {{
            subcontrol-origin: padding;
            subcontrol-position: top right;
            /* 24px = 18px chevron icon + 3px breathing room each side.
               Was 30px, which left the icon visibly floating with too
               much empty space on either side. */
            width: 24px;
            border: none;
        }}
        QComboBox::down-arrow {{
            image: url("{CHEVRON_DOWN_PATH}");
            width: 18px;
            height: 18px;
            subcontrol-position: center;
        }}
        QComboBox::down-arrow:disabled {{
            image: url("{CHEVRON_DOWN_DISABLED_PATH}");
        }}
        QComboBox QAbstractItemView {{
            border: 1px solid {color("border_light")};
            border-radius: 8px;
            background-color: {color("component_bg")};
            selection-background-color: rgba(62, 121, 247, 0.1);
            selection-color: {color("primary")};
            outline: none;
            /* Small inner padding so item hover backgrounds don't bleed
               into the rounded corners of the popup container. */
            padding: 4px;
            margin: 0px;
        }}
        QComboBox QAbstractItemView::item {{
            padding: 6px 12px;
            min-height: 24px;
            margin: 0px;
            border-radius: 4px;
        }}
        QComboBox QAbstractItemView::item:hover,
        QComboBox QAbstractItemView::item:selected {{
            background-color: rgba(62, 121, 247, 0.1);
            color: {color("primary")};
        }}
    """

style_tab_widget

style_tab_widget()

QSS for tab widgets.

ソースコード位置： src/constants/theme.py

def style_tab_widget() -> str:
    """QSS for tab widgets."""
    return f"""
        QTabWidget {{
            background-color: transparent;
        }}
        QTabWidget::pane {{
            border: none;
            background-color: transparent;
        }}
        QTabBar {{
            background-color: transparent;
            qproperty-drawBase: 0;
            alignment: center;
        }}
        QTabBar::tab {{
            background-color: transparent;
            color: {color("text_secondary")};
            padding: 12px 20px;
            margin: 0 4px;
            font-weight: 600;
            font-size: 15px;
            border-bottom: 3px solid transparent;
        }}
        QTabBar::tab:selected {{
            color: {color("primary")};
            border-bottom: 3px solid {color("primary")};
        }}
        QTabBar::tab:hover:!selected {{
            color: {color("primary")};
            background-color: {color("hover_light")};
            border-top-left-radius: 8px;
            border-top-right-radius: 8px;
        }}
    """

style_radio_button

style_radio_button()

QSS for radio buttons.

ソースコード位置： src/constants/theme.py

def style_radio_button() -> str:
    """QSS for radio buttons."""
    c = color("component_bg")
    return f"""
        QRadioButton {{
            spacing: 12px;
            color: {color("text_primary")};
            font-size: 14px;
            padding: 8px;
            background-color: {c};
            border: none;
        }}
        QRadioButton::indicator {{
            width: 20px;
            height: 20px;
            border-radius: 12px;
        }}
        QRadioButton::indicator:unchecked {{
            border: 2px solid {color("outline")};
            background-color: {c};
        }}
        QRadioButton::indicator:checked {{
            border: 2px solid {color("primary")};
            background-color: qradialgradient(
                cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
                stop:0 {color("primary")},
                stop:0.45 {color("primary")},
                stop:0.46 {c},
                stop:1 {c}
            );
        }}
        QRadioButton::indicator:unchecked:hover {{
            border-color: {color("primary")};
            background-color: {color("hover_light")};
        }}
        QRadioButton::indicator:checked:hover {{
            border-color: {color("primary")};
            background-color: qradialgradient(
                cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
                stop:0 {color("primary")},
                stop:0.45 {color("primary")},
                stop:0.46 {color("hover_light")},
                stop:1 {color("hover_light")}
            );
        }}
        QRadioButton:disabled {{
            color: {color("disabled_text")};
        }}
        QRadioButton::indicator:disabled {{
            border-color: {color("disabled_text")};
            background-color: {color("disabled_bg")};
        }}
        QRadioButton::indicator:checked:disabled {{
            background-color: qradialgradient(
                cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
                stop:0 {color("disabled_text")},
                stop:0.45 {color("disabled_text")},
                stop:0.46 {color("disabled_bg")},
                stop:1 {color("disabled_bg")}
            );
        }}
    """

style_primary_button

style_primary_button()

QSS for primary action buttons.

ソースコード位置： src/constants/theme.py

def style_primary_button() -> str:
    """QSS for primary action buttons."""
    return f"""
        QPushButton {{
            background-color: {color("primary")};
            color: white;
            border: none;
            border-radius: {RADIUS_BUTTON}px;
            padding: 10px 24px;
            font-weight: 400;
            font-size: 14px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            background-color: {color("primary_hover")};
        }}
        QPushButton:pressed {{
            background-color: {color("primary_pressed")};
        }}
        QPushButton:disabled {{
            background-color: {color("disabled_bg")};
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_danger_button

style_danger_button()

QSS for filled destructive buttons.

ソースコード位置： src/constants/theme.py

def style_danger_button() -> str:
    """QSS for filled destructive buttons."""
    return f"""
        QPushButton {{
            background-color: {color("error")};
            color: white;
            border: none;
            border-radius: {RADIUS_BUTTON}px;
            padding: 10px 24px;
            font-weight: 400;
            font-size: 14px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            background-color: {color("error_hover")};
        }}
        QPushButton:pressed {{
            background-color: {color("error_pressed")};
        }}
        QPushButton:disabled {{
            background-color: {color("disabled_bg")};
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_delete_button

style_delete_button()

QSS for outlined destructive buttons.

ソースコード位置： src/constants/theme.py

def style_delete_button() -> str:
    """QSS for outlined destructive buttons."""
    return f"""
        QPushButton {{
            color: {color("error")};
            border: 1px solid {color("error")};
            background-color: transparent;
            font-size: 14px;
            font-weight: 400;
            padding: 10px 24px;
            border-radius: {RADIUS_BUTTON}px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            color: {color("error_hover")};
            border: 1px solid {color("error_hover")};
            background-color: rgba(255, 107, 114, 0.1);
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_outlined_primary_button

style_outlined_primary_button()

QSS for outlined primary buttons.

ソースコード位置： src/constants/theme.py

def style_outlined_primary_button() -> str:
    """QSS for outlined primary buttons."""
    return f"""
        QPushButton {{
            color: {color("primary")};
            border: 1px solid {color("primary")};
            background-color: transparent;
            font-size: 14px;
            font-weight: 400;
            padding: 10px 24px;
            border-radius: {RADIUS_BUTTON}px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            color: {color("primary_light")};
            border: 1px solid {color("primary_light")};
            background-color: rgba(62, 121, 247, 0.1);
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_warning_button

style_warning_button()

QSS for outlined warning/pause buttons.

ソースコード位置： src/constants/theme.py

def style_warning_button() -> str:
    """QSS for outlined warning/pause buttons."""
    return f"""
        QPushButton {{
            color: {color("warning")};
            border: 1px solid {color("warning")};
            background-color: transparent;
            font-size: 14px;
            font-weight: 400;
            padding: 10px 24px;
            border-radius: {RADIUS_BUTTON}px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            color: {color("warning_hover")};
            border: 1px solid {color("warning_hover")};
            background-color: rgba(255, 197, 66, 0.1);
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
            border: 1px solid {color("border_light")};
        }}
    """

style_secondary_button

style_secondary_button()

QSS for secondary action buttons.

ソースコード位置： src/constants/theme.py

def style_secondary_button() -> str:
    """QSS for secondary action buttons."""
    return f"""
        QPushButton {{
            background-color: transparent;
            color: {color("text_secondary")};
            border: 1px solid {color("border_light")};
            border-radius: {RADIUS_BUTTON}px;
            padding: 10px 24px;
            font-weight: 400;
            font-size: 14px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            background-color: {color("hover_light")};
            border-color: {color("primary")};
            color: {color("primary")};
        }}
        QPushButton:pressed {{
            background-color: {color("border_light")};
        }}
        QPushButton:checked {{
            background-color: {color("primary")};
            border-color: {color("primary")};
            color: white;
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
            border-color: {color("border_light")};
        }}
    """

style_toggle_button

style_toggle_button()

QSS for setCheckable(True) toggle buttons.

Same neutral-by-default styling as style_secondary_button, but the :checked state uses an outlined-primary look (blue border + blue text on a tinted background) instead of the secondary-button solid blue fill. This keeps "on" clearly distinct from "off" without making the toggle compete with the page's actual primary action button (e.g. Start Listening) for visual weight.

ソースコード位置： src/constants/theme.py

def style_toggle_button() -> str:
    """QSS for ``setCheckable(True)`` toggle buttons.

    Same neutral-by-default styling as ``style_secondary_button``,
    but the ``:checked`` state uses an outlined-primary look (blue
    border + blue text on a tinted background) instead of the
    secondary-button solid blue fill.  This keeps "on" clearly
    distinct from "off" without making the toggle compete with the
    page's actual primary action button (e.g. Start Listening) for
    visual weight.
    """
    return f"""
        QPushButton {{
            background-color: transparent;
            color: {color("text_secondary")};
            border: 1px solid {color("border_light")};
            border-radius: {RADIUS_BUTTON}px;
            padding: 10px 24px;
            font-weight: 400;
            font-size: 14px;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            background-color: {color("hover_light")};
            border-color: {color("primary")};
            color: {color("primary")};
        }}
        QPushButton:pressed {{
            background-color: {color("border_light")};
        }}
        QPushButton:checked {{
            background-color: rgba(62, 121, 247, 0.1);
            border-color: {color("primary")};
            color: {color("primary")};
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
            border-color: {color("border_light")};
        }}
    """

style_scrollbar

style_scrollbar()

QSS for custom scrollbars.

ソースコード位置： src/constants/theme.py

def style_scrollbar() -> str:
    """QSS for custom scrollbars."""
    return f"""
        QScrollBar:vertical {{
            border: none;
            background: transparent;
            width: 8px;
        }}
        QScrollBar::handle:vertical {{
            background: {color("scrollbar_handle")};
            border-radius: 4px;
        }}
        QScrollBar::handle:vertical:hover {{
            background: {color("scrollbar_hover")};
        }}
        QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {{
            height: 0px;
        }}
    """

style_table

style_table()

QSS for data tables.

ソースコード位置： src/constants/theme.py

def style_table() -> str:
    """QSS for data tables."""
    return f"""
        QTableWidget {{
            background-color: {color("component_bg")};
            alternate-background-color: {color("hover_light")};
            color: {color("text_primary")};
            gridline-color: {color("hover_light")};
            selection-background-color: rgba(62, 121, 247, 0.1);
            selection-color: {color("text_primary")};
            border: none;
            outline: none;
        }}
        QTableWidget::item {{
            padding: 12px;
            outline: none;
        }}
        QHeaderView {{
            border: none;
            background-color: {color("hover_light")};
        }}
        QHeaderView::section {{
            background-color: {color("hover_light")};
            padding: 12px;
            font-weight: 600;
            color: {color("text_secondary")};
            border: none;
            border-bottom: 1px solid {color("border_light")};
            border-right: 1px solid {color("border_light")};
            outline: none;
        }}
        QHeaderView::section:last {{
            border-right: none;
        }}
    """

style_table_delete_button

style_table_delete_button()

QSS for inline table delete buttons.

ソースコード位置： src/constants/theme.py

def style_table_delete_button() -> str:
    """QSS for inline table delete buttons."""
    return f"""
        QPushButton {{
            color: {color("error")};
            background-color: transparent;
            font-size: 12px;
            font-weight: 600;
            border: none;
            outline: none;
        }}
        QPushButton:hover, QPushButton:focus {{
            text-decoration: underline;
        }}
        QPushButton:disabled {{
            color: {color("disabled_text")};
        }}
    """

style_splitter

style_splitter()

Returns QSS for a QSplitter with a subtle draggable handle.

ソースコード位置： src/constants/theme.py

def style_splitter() -> str:
    """Returns QSS for a QSplitter with a subtle draggable handle."""
    return f"""
        QSplitter::handle:horizontal {{
            width: 2px;
            background: {color("border_light")};
            border-radius: 1px;
            margin: 8px 0;
        }}
        QSplitter::handle:horizontal:hover {{
            background: {color("primary")};
        }}
    """

style_banner

style_banner(variant='warning')

QSS for warning, error, info, or success banners with an icon.

ソースコード位置： src/constants/theme.py

def style_banner(variant: str = "warning") -> str:
    """QSS for warning, error, info, or success banners with an icon."""
    color_map = {
        "warning": color("warning"),
        "error": color("error"),
        "info": color("primary"),
        "success": color("success"),
    }
    accent = color_map.get(variant, color("warning"))
    return f"""
        QFrame#Banner {{
            background-color: {color("component_bg")};
            border: 1px solid {accent};
            border-radius: {RADIUS_BUTTON}px;
            margin-bottom: {BANNER_MARGIN_BOTTOM}px;
        }}
        QLabel#BannerText, QLabel#BannerIcon, QTextBrowser#BannerText {{
            border: none;
            background: transparent;
        }}
        QLabel#BannerText {{
            font-size: {BANNER_FONT_SIZE}px;
            font-weight: 500;
            color: {accent};
        }}
    """