[Fonts] Retire max font size setting into theme CardText min/max range

The per-card text size lives in the theme now, so a theme can pick the size
it was designed for instead of every user overriding it globally.

- CardText stores family + max point size; CardTextMinSize stores the
  overlay shrink-to-fit floor (omitted from fonts.toml when 1).
- ThemeManager::cardTextMaxSize()/cardTextMinSize() resolve the range with
  the retired defaults (12 max, 1 min), and cardTextMaxSize() falls back to
  the CardText role size that #7541 made live.
- The overlay widget starts at the explicit size when one is set (deck
  preview), else the theme max, and shrinks down to the theme floor.
- The appearance page's "Maximum font size" spin is gone; the range is
  edited in the theme's font grid, whose min/max spins now keep the saved
  range consistent with each other.
- Migration: appearance/maxFontSize is seeded into every user theme folder
  and into the active theme's folder (created when the theme is a shipped
  one that only exists in the system directory). The retired
  game/maxfontsize -> appearance/maxFontSize mapping stays, so users still
  on global.ini keep their value through the chain.

cockatrice/CMakeLists.txt

@@ -154,6 +154,7 @@ set(cockatrice_SOURCES
     src/interface/palette_editor/palette_generator.cpp
     src/interface/palette_editor/quick_setup_panel.cpp
     src/interface/palette_editor/palette_grid_widget.cpp
+    src/interface/palette_editor/font_grid_widget.cpp
     src/interface/palette_editor/palette_editor_dialog.cpp
     src/interface/widgets/cards/additional_info/color_identity_widget.cpp
     src/interface/widgets/cards/additional_info/deck_color_identity.cpp

cockatrice/src/client/settings/cache_settings.cpp

@@ -137,6 +137,9 @@ SettingsCache::SettingsCache()
     // before that rename (idempotent, safe to run on every startup, portable builds included).
     SettingsMigration::migrateGameFiltersToCamelCase(settingsPath);
 
+    // Retire appearance/maxFontSize into per-theme CardText max (idempotent, safe every startup).
+    SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath);
+
     shortcutsSettings = new ShortcutsSettings(settingsPath, this);
     cardDatabaseSettings = new CardDatabaseSettings(settingsPath, this);
     serversSettings = new ServersSettings(settingsPath, this);

cockatrice/src/client/settings/shortcut_treeview.cpp

@@ -1,5 +1,6 @@
 #include "shortcut_treeview.h"
 
+#include "../../interface/theme_manager.h"
 #include "cache_settings.h"
 #include "shortcuts_settings.h"
 
@@ -78,6 +79,18 @@ ShortcutTreeView::ShortcutTreeView(QWidget *parent) : QTreeView(parent)
 
     connect(&SettingsCache::instance().shortcuts(), &ShortcutsSettings::shortCutChanged, this,
             &ShortcutTreeView::refreshShortcuts);
+
+    // Group headers store their font on the item; re-apply the role family on
+    // font changes (setFont emits itemChanged, which repaints the rows).
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        QFont groupFont = themeManager->appFont(AppFont::InterfaceDefault);
+        groupFont.setBold(true);
+        for (int row = 0; row < shortcutsModel->rowCount(); ++row) {
+            if (auto *groupItem = shortcutsModel->item(row)) {
+                groupItem->setFont(groupFont);
+            }
+        }
+    });
 }
 
 void ShortcutTreeView::populateShortcutsModel()
@@ -93,7 +106,8 @@ void ShortcutTreeView::populateShortcutsModel()
             curParent = parentItems.value(group);
         } else {
             curParent = new QStandardItem(group);
-            static QFont font = curParent->font();
+            // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+            QFont font = themeManager->appFont(AppFont::InterfaceDefault);
             font.setBold(true);
             curParent->setFont(font);
             parentItems.insert(group, curParent);

cockatrice/src/filters/filter_tree_model.cpp

@@ -1,5 +1,7 @@
 #include "filter_tree_model.h"
 
+#include "../interface/theme_manager.h"
+
 #include <QFlags>
 #include <QFont>
 #include <QString>
@@ -39,6 +41,12 @@ FilterTreeModel::FilterTreeModel(QObject *parent) : QAbstractItemModel(parent)
     connect(fTree, &FilterTree::postInsertRow, this, &FilterTreeModel::proxyEndInsertRow);
     connect(fTree, &FilterTree::preRemoveRow, this, &FilterTreeModel::proxyBeginRemoveRow);
     connect(fTree, &FilterTree::postRemoveRow, this, &FilterTreeModel::proxyEndRemoveRow);
+    // FontRole data reads the DeckList role live; rebroadcast so attached
+    // views re-query instead of waiting for an incidental repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        emit layoutAboutToBeChanged();
+        emit layoutChanged();
+    });
 }
 
 FilterTreeModel::~FilterTreeModel()
@@ -202,7 +210,8 @@ QVariant FilterTreeModel::data(const QModelIndex &index, int role) const
     switch (role) {
         case Qt::FontRole:
             if (!node->isLeaf()) {
-                QFont f;
+                // Family comes from the DeckList theme role; bold stays caller-side.
+                QFont f = themeManager->appFont(AppFont::DeckList);
                 f.setBold(true);
                 return f;
             }

cockatrice/src/game_graphics/board/abstract_card_item.cpp

@@ -3,6 +3,7 @@
 #include "../../client/settings/cache_settings.h"
 #include "../../interface/card_localization.h"
 #include "../../interface/card_picture_loader/card_picture_loader.h"
+#include "../../interface/theme_manager.h"
 #include "../card_dimensions.h"
 #include "../game_scene.h"
 #include "../z_values.h"
@@ -34,7 +35,6 @@
 #include <QVariant>
 #include <QtGlobal>
 #include <algorithm>
-#include <libcockatrice/settings/appearance_settings.h>
 #include <libcockatrice/settings/cards_display_settings.h>
 #include <libcockatrice/settings/debug_settings.h>
 #include <qnamespace.h>
@@ -143,8 +143,8 @@ QSizeF AbstractCardItem::getTranslatedSize(QPainter *painter) const
 
 void AbstractCardItem::transformPainter(QPainter *painter, const QSizeF &translatedSize, int angle)
 {
-    const int MAX_FONT_SIZE = SettingsCache::instance().appearance().getMaxFontSize();
-    const int fontSize = std::max(9, MAX_FONT_SIZE);
+    const int minSize = std::max(1, themeManager->cardTextMinSize());
+    const int fontSize = std::max(minSize, std::max(1, themeManager->cardTextMaxSize()));
 
     QRectF totalBoundingRect = painter->combinedTransform().mapRect(boundingRect());
 
@@ -154,7 +154,7 @@ void AbstractCardItem::transformPainter(QPainter *painter, const QSizeF &transla
     painter->rotate(angle);
     painter->translate(-translatedSize.width() / 2, -translatedSize.height() / 2);
 
-    QFont f;
+    QFont f = themeManager->appFont(AppFont::CardText);
     f.setPixelSize(fontSize * scale);
 
     painter->setFont(f);

cockatrice/src/game_graphics/board/abstract_graphics_item.cpp

@@ -1,5 +1,7 @@
 #include "abstract_graphics_item.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QBrush>
 #include <QFont>
 #include <QFontMetrics>
@@ -20,7 +22,7 @@ void AbstractGraphicsItem::paintNumberEllipse(int number,
     painter->save();
 
     QString numStr = QString::number(number);
-    QFont font("Serif");
+    QFont font = themeManager->cardTextFont();
     font.setPixelSize(fontSize);
     font.setWeight(QFont::Bold);
 

cockatrice/src/game_graphics/board/counter_general.cpp

@@ -1,6 +1,7 @@
 #include "counter_general.h"
 
 #include "../../interface/pixel_map_generator.h"
+#include "../../interface/theme_manager.h"
 #include "abstract_graphics_item.h"
 
 #include <QFont>
@@ -41,7 +42,7 @@ void GeneralCounter::paint(QPainter *painter, const QStyleOptionGraphicsItem * /
     painter->drawPixmap(QPoint(0, 0), pixmap);
 
     if (value) {
-        QFont f("Serif");
+        QFont f = themeManager->cardTextFont();
         f.setPixelSize(qMax((int)(radius * scaleFactor), 10));
         f.setWeight(QFont::Bold);
         painter->setPen(Qt::black);

cockatrice/src/game_graphics/deckview/deck_view.cpp

@@ -240,8 +240,8 @@ void DeckViewCardContainer::paint(QPainter *painter, const QStyleOptionGraphicsI
     painter->drawLine(QPointF(0, separatorY), QPointF(width, separatorY));
 
     painter->setPen(QColor(Qt::white));
-    QFont f("Serif");
-    f.setStyleHint(QFont::Serif);
+    // Family comes from the DeckList theme role; pixel sizes/weights unchanged.
+    QFont f = themeManager->deckListFont();
     f.setPixelSize(24);
     f.setWeight(QFont::Bold);
     painter->setFont(f);
@@ -292,8 +292,8 @@ QList<QPair<int, int>> DeckViewCardContainer::getRowsAndCols() const
 
 int DeckViewCardContainer::getCardTypeTextWidth() const
 {
-    QFont f("Serif");
-    f.setStyleHint(QFont::Serif);
+    // Family comes from the DeckList theme role; pixel size/weight unchanged.
+    QFont f = themeManager->deckListFont();
     f.setPixelSize(16);
     f.setWeight(QFont::Bold);
     QFontMetrics fm(f);
@@ -366,6 +366,15 @@ void DeckViewCardContainer::setWidth(qreal _width)
 
 DeckViewScene::DeckViewScene(QObject *parent) : QGraphicsScene(parent), locked(true), deck(0), optimalAspectRatio(1.0)
 {
+    // Zone headers read the DeckList role at paint time and cache their
+    // rendering, so touch every item to invalidate the caches and pick up the
+    // new family on font changes (containers cannot connect this themselves:
+    // QGraphicsItem is not a QObject).
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        for (auto *item : items()) {
+            item->update();
+        }
+    });
 }
 
 DeckViewScene::~DeckViewScene()

cockatrice/src/game_graphics/game_scene.cpp

@@ -1,6 +1,7 @@
 #include "game_scene.h"
 
 #include "../client/settings/cache_settings.h"
+#include "../interface/theme_manager.h"
 #include "animated_item.h"
 #include "board/abstract_card_item.h"
 #include "board/arrow_item.h"
@@ -64,6 +65,14 @@ GameScene::GameScene(PhasesToolbar *_phasesToolbar, QObject *parent)
     addItem(phasesToolbar);
     connect(&SettingsCache::instance().userInterface(), &InterfaceSettings::minPlayersForMultiColumnLayoutChanged, this,
             &GameScene::rearrange);
+    // CardText items (P/T boxes, counters, player names) read the role at
+    // paint time and cache their rendering, so touch every item to invalidate
+    // the caches and pick up the new family on font changes.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        for (auto *item : items()) {
+            item->update();
+        }
+    });
 
     rearrange();
 }

cockatrice/src/game_graphics/game_view.cpp

@@ -2,12 +2,14 @@
 
 #include "../client/settings/cache_settings.h"
 #include "../client/settings/shortcuts_settings.h"
+#include "../interface/theme_manager.h"
 #include "game_scene.h"
 
 #include <QAction>
 #include <QBrush>
 #include <QColor>
 #include <QEvent>
+#include <QFont>
 #include <QGraphicsScene>
 #include <QGridLayout>
 #include <QLabel>
@@ -24,6 +26,21 @@
 #include <libcockatrice/utility/qt_utils.h>
 #include <qnamespace.h>
 
+namespace
+{
+QFont deckOverlayFont(int pixelSize, bool bold)
+{
+    // The drag/total counters and the tally columns are in-game overlays, not
+    // deck list text: keep the monospace family the stylesheets used to set so
+    // digit widths stay stable as counts tick and `white-space: pre` lines up.
+    QFont font(QStringLiteral("monospace"));
+    font.setStyleHint(QFont::Monospace);
+    font.setPixelSize(pixelSize);
+    font.setBold(bold);
+    return font;
+}
+} // namespace
+
 // QRubberBand calls raise() in showEvent() and changeEvent() to stay on top of siblings.
 // This subclass disables that behavior so dragCountLabel can appear above it.
 class SelectionRubberBand : public QRubberBand
@@ -75,15 +92,14 @@ GameView::GameView(GameScene *scene, QWidget *parent) : QGraphicsView(scene, par
     rubberBand = new SelectionRubberBand(QRubberBand::Rectangle, this);
 
     const QString baseProperties = "color: white; "
-                                   "font-family: monospace; "
                                    "background-color: rgba(0, 0, 0, 160); "
                                    "border-radius: 3px; "
                                    "padding: 1px 2px; "
                                    "white-space: pre;";
 
-    const QString dragCountLabelStyle = baseProperties + "font-size: 14px; font-weight: bold;";
-    const QString totalCountLabelStyle = baseProperties + "font-size: 16px; font-weight: bold;";
-    const QString subtypeTallyLabelStyle = baseProperties + "font-size: 12px;";
+    const QString dragCountLabelStyle = baseProperties;
+    const QString totalCountLabelStyle = baseProperties;
+    const QString subtypeTallyLabelStyle = baseProperties;
 
     dragCountLabel = new QLabel(this);
     dragCountLabel->setStyleSheet(dragCountLabelStyle);
@@ -100,6 +116,27 @@ GameView::GameView(GameScene *scene, QWidget *parent) : QGraphicsView(scene, par
     tallyLayout->setContentsMargins(2, 2, 2, 2);
     tallyLayout->setSpacing(2);
     tallyContainer->hide();
+
+    applyDeckOverlayFonts();
+}
+
+void GameView::applyDeckOverlayFonts()
+{
+    dragCountLabel->setFont(deckOverlayFont(14, true));
+    totalCountLabel->setFont(deckOverlayFont(16, true));
+    tallyContainer->setFont(deckOverlayFont(12, false));
+    for (int i = 0; i < tallyLayout->count(); ++i) {
+        if (auto *label = qobject_cast<QLabel *>(tallyLayout->itemAt(i)->widget())) {
+            // Count column (odd positions) keeps the bold emphasis.
+            const bool count = i % 2 == 1;
+            label->setFont(deckOverlayFont(count ? 14 : 12, count));
+        }
+    }
+
+    // The container keeps the size computed from the previous fonts, so force
+    // rebuildTallyLabels() to re-measure it instead of reusing cachedTallyRows.
+    cachedTallyRows.clear();
+    updateTotalSelectionCount();
 }
 
 void GameView::resizeEvent(QResizeEvent *event)
@@ -219,9 +256,8 @@ QSize GameView::rebuildTallyLabels(const QList<TallyRow> &entries)
 {
     clearTallyLabels();
 
-    const QString nameStyle = QStringLiteral("color: white; font-size: 12px; background: transparent;");
-    const QString countStyle =
-        QStringLiteral("color: white; font-size: 14px; font-weight: bold; background: transparent;");
+    const QString nameStyle = QStringLiteral("color: white; background: transparent;");
+    const QString countStyle = QStringLiteral("color: white; background: transparent;");
 
     int totalHeight = 0;
     int maxNameWidth = 0;
@@ -231,11 +267,13 @@ QSize GameView::rebuildTallyLabels(const QList<TallyRow> &entries)
     for (const TallyRow &entry : entries) {
         auto *nameLabel = new QLabel(entry.name, tallyContainer);
         nameLabel->setStyleSheet(nameStyle);
+        nameLabel->setFont(deckOverlayFont(12, false));
         nameLabel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
         tallyLayout->addWidget(nameLabel, row, 0);
 
         auto *countLabel = new QLabel(entry.value, tallyContainer);
         countLabel->setStyleSheet(countStyle);
+        countLabel->setFont(deckOverlayFont(14, true));
         countLabel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
         tallyLayout->addWidget(countLabel, row, 1);
 

cockatrice/src/game_graphics/game_view.h

@@ -50,6 +50,7 @@ private slots:
     void refreshShortcuts();
     void updateTotalSelectionCount(const QSize &viewSize = QSize());
     void setFocusDisabled(bool disabled);
+    void applyDeckOverlayFonts();
 public slots:
     void updateSceneRect(const QRectF &rect);
 

cockatrice/src/game_graphics/player/player_target.cpp

@@ -2,6 +2,7 @@
 
 #include "../../client/settings/cache_settings.h"
 #include "../../interface/pixel_map_generator.h"
+#include "../../interface/theme_manager.h"
 #include "../board/abstract_counter.h"
 #include "../board/abstract_graphics_item.h"
 #include "../board/arrow_target.h"
@@ -76,7 +77,7 @@ void PlayerCounter::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*
 
     QRectF translatedRect = path.controlPointRect();
     QSize translatedSize = translatedRect.size().toSize();
-    QFont font("Serif");
+    QFont font = themeManager->cardTextFont();
     font.setWeight(QFont::Bold);
     font.setPixelSize(qMax(qRound(translatedSize.height() / 1.3), 9));
     painter->setFont(font);
@@ -226,7 +227,7 @@ void PlayerTarget::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*o
         name = name.mid(0, 10) + "...";
     }
 
-    QFont font;
+    QFont font = themeManager->appFont(AppFont::CardText);
     font.setPixelSize(qMax(qRound(translatedNameRect.height() / 1.5), 9));
     painter->setFont(font);
     painter->setPen(Qt::white);

cockatrice/src/interface/deck_loader/deck_loader.cpp

@@ -1,5 +1,6 @@
 #include "deck_loader.h"
 
+#include "../theme_manager.h"
 #include "libcockatrice/card/card_info.h"
 #include "libcockatrice/card/database/card_database_querier.h"
 #include "libcockatrice/deck_list/tree/abstract_deck_list_card_node.h"
@@ -579,6 +580,8 @@ void DeckLoader::printDeckListNode(QTextCursor *cursor, const InnerDecklistNode
     if (!cards.isEmpty()) {
         QTextBlockFormat blockFormat;
         QTextCharFormat charFormat;
+        // Family comes from the DeckList theme role; sizes/weights unchanged.
+        charFormat.setFontFamilies({themeManager->deckListFont().family()});
         charFormat.setFontPointSize(11);
         charFormat.setFontWeight(QFont::Bold);
         cursor->insertBlock(blockFormat, charFormat);
@@ -592,6 +595,7 @@ void DeckLoader::printDeckListNode(QTextCursor *cursor, const InnerDecklistNode
             const AbstractDecklistCardNode *card = cards[i];
 
             QTextCharFormat cellCharFormat;
+            cellCharFormat.setFontFamilies({themeManager->deckListFont().family()});
             cellCharFormat.setFontPointSize(9);
 
             QTextTableCell cell = table->cellAt(i, 0);
@@ -613,6 +617,7 @@ void DeckLoader::printDeckListNode(QTextCursor *cursor, const InnerDecklistNode
 
         QTextBlockFormat blockFormat;
         QTextCharFormat charFormat;
+        charFormat.setFontFamilies({themeManager->deckListFont().family()});
         charFormat.setFontPointSize(14);
         charFormat.setFontWeight(QFont::Bold);
 
@@ -640,14 +645,18 @@ void DeckLoader::printDeckList(QPrinter *printer, const DeckList &deckList)
 {
     QTextDocument doc;
 
-    QFont font("Serif");
-    font.setStyleHint(QFont::Serif);
+    // Family comes from the DeckList theme role; the print sizes/weights below stay unchanged.
+    // Print output is a one-shot snapshot and intentionally does not subscribe
+    // to fontsChanged (there is no live view to repaint); reprinting picks up
+    // the current role font.
+    QFont font = themeManager->deckListFont();
     doc.setDefaultFont(font);
 
     QTextCursor cursor(&doc);
 
     QTextBlockFormat headerBlockFormat;
     QTextCharFormat headerCharFormat;
+    headerCharFormat.setFontFamilies({themeManager->deckListFont().family()});
     headerCharFormat.setFontPointSize(16);
     headerCharFormat.setFontWeight(QFont::Bold);
 

cockatrice/src/interface/palette_editor/color_button.cpp

@@ -1,5 +1,7 @@
 #include "color_button.h"
 
+#include "../theme_manager.h"
+
 #include <QBrush>
 #include <QColorDialog>
 #include <QFont>
@@ -21,6 +23,7 @@ ColorButton::ColorButton(QWidget *parent) : QToolButton(parent)
     setCursor(Qt::PointingHandCursor);
     setToolTip(tr("Click to pick a color"));
     connect(this, &QToolButton::clicked, this, &ColorButton::pickColor);
+    connect(themeManager, &ThemeManager::fontsChanged, this, &ColorButton::updateSwatch);
 }
 
 void ColorButton::setColor(const QColor &c)
@@ -73,7 +76,8 @@ void ColorButton::updateSwatch()
     // Hex label — black or white for contrast
     int luma = 0.299 * color.red() + 0.587 * color.green() + 0.114 * color.blue();
     painter.setPen((luma > 128 && color.alpha() > 80) ? QColor(0, 0, 0, 180) : QColor(255, 255, 255, 200));
-    QFont f = font();
+    // Family comes from the InterfaceDefault theme role; the 8px size stays caller-side.
+    QFont f = themeManager->appFont(AppFont::InterfaceDefault);
     f.setPixelSize(8);
     painter.setFont(f);
     painter.drawText(rect(), Qt::AlignCenter, color.name().toUpper());

cockatrice/src/interface/palette_editor/font_grid_widget.cpp

@@ -0,0 +1,208 @@
+#include "font_grid_widget.h"
+
+#include "../theme_manager.h"
+
+#include <QApplication>
+#include <QFont>
+#include <QFontComboBox>
+#include <QGridLayout>
+#include <QLabel>
+#include <QMetaEnum>
+#include <QSpinBox>
+#include <QtGlobal>
+
+static constexpr int MIN_FONT_SIZE = 6;
+static constexpr int MAX_FONT_SIZE = 72;
+static constexpr int CARD_TEXT_MIN_SIZE = 1;
+static constexpr int CARD_TEXT_MAX_SIZE = 12;
+static constexpr int FALLBACK_FONT_SIZE = 10;
+
+static const QMap<AppFont::Role, const char *> APP_FONT_DESCRIPTIONS = {
+    {AppFont::InterfaceDefault, QT_TR_NOOP("Default font for menus, dialogs and widgets")},
+    {AppFont::ChatLog, QT_TR_NOOP("Font for chat messages and logs")},
+    {AppFont::CardText, QT_TR_NOOP("Font for text rendered on cards")},
+    {AppFont::DeckList, QT_TR_NOOP("Font for deck lists and the deck editor")},
+};
+
+static QString roleDisplayName(AppFont::Role role)
+{
+    switch (role) {
+        case AppFont::InterfaceDefault:
+            return FontGridWidget::tr("Interface default");
+        case AppFont::ChatLog:
+            return FontGridWidget::tr("Chat log");
+        case AppFont::CardText:
+            return FontGridWidget::tr("Card text");
+        case AppFont::DeckList:
+            return FontGridWidget::tr("Deck list");
+        default:
+            return QString();
+    }
+}
+
+FontGridWidget::FontGridWidget(QWidget *parent) : QWidget(parent)
+{
+    auto *grid = new QGridLayout(this);
+    grid->setSpacing(3);
+    grid->setContentsMargins(12, 8, 12, 8);
+    grid->setColumnStretch(0, 0);
+    grid->setColumnStretch(1, 1);
+    grid->setColumnStretch(2, 0);
+    grid->setColumnStretch(3, 0);
+
+    QMetaEnum fontEnum = QMetaEnum::fromType<AppFont::Role>();
+    for (int i = 0; i < fontEnum.keyCount(); ++i) {
+        auto role = static_cast<AppFont::Role>(fontEnum.value(i));
+
+        auto *label = new QLabel(this);
+        grid->addWidget(label, i, 0);
+
+        auto *familyCombo = new QFontComboBox(this);
+        grid->addWidget(familyCombo, i, 1);
+        connect(familyCombo, &QFontComboBox::currentFontChanged, this, [this] { emit fontsChanged(); });
+
+        if (role == AppFont::CardText) {
+            auto *minSpin = new QSpinBox(this);
+            minSpin->setRange(CARD_TEXT_MIN_SIZE, MAX_FONT_SIZE);
+            grid->addWidget(minSpin, i, 2);
+            connect(minSpin, &QSpinBox::valueChanged, this, [this] { emit fontsChanged(); });
+
+            auto *maxSpin = new QSpinBox(this);
+            maxSpin->setRange(MIN_FONT_SIZE, MAX_FONT_SIZE);
+            grid->addWidget(maxSpin, i, 3);
+            connect(maxSpin, &QSpinBox::valueChanged, this, [this] { emit fontsChanged(); });
+
+            // Keep the range consistent: otherwise min 20 / max 12 saves as-is
+            // and cardTextMaxSize() silently clamps the max up to the min, so
+            // the max spin shows a size that is never used. Moving one spin
+            // pulls the other's bound along.
+            connect(minSpin, &QSpinBox::valueChanged, this, [maxSpin](int value) { maxSpin->setMinimum(value); });
+            connect(maxSpin, &QSpinBox::valueChanged, this, [minSpin](int value) { minSpin->setMaximum(value); });
+
+            label->setBuddy(familyCombo);
+
+            fontRows[role] = {label, familyCombo, maxSpin, minSpin};
+            continue;
+        }
+
+        auto *sizeSpin = new QSpinBox(this);
+        sizeSpin->setRange(MIN_FONT_SIZE, MAX_FONT_SIZE);
+        grid->addWidget(sizeSpin, i, 2);
+        connect(sizeSpin, &QSpinBox::valueChanged, this, [this] { emit fontsChanged(); });
+
+        label->setBuddy(familyCombo);
+
+        fontRows[role] = {label, familyCombo, sizeSpin, nullptr};
+    }
+
+    retranslateUi();
+}
+
+void FontGridWidget::loadFonts(const FontConfig &cfg)
+{
+    // Suppress fontsChanged while materializing fallback rows so the initial
+    // load never reads as a user edit (mirrors paletteGrid blocking).
+    blockSignals(true);
+    QMetaEnum fontEnum = QMetaEnum::fromType<AppFont::Role>();
+    for (int i = 0; i < fontEnum.keyCount(); ++i) {
+        auto role = static_cast<AppFont::Role>(fontEnum.value(i));
+        const FontRow &row = fontRows[role];
+
+        // Roles absent from the file resolve the same way the runtime does: an unset
+        // role falls back to the config's InterfaceDefault, and only then to the
+        // startup font. appFont() would return the live preview instead, so Reset and
+        // a first load must not measure against it.
+        const QFont fallback = cfg.fonts.value(AppFont::InterfaceDefault, themeManager->defaultAppFont(role));
+        const QFont font = cfg.fonts.value(role, fallback);
+        row.familyCombo->setCurrentFont(font);
+
+        if (role == AppFont::CardText && row.minSpin != nullptr) {
+            // A previous load may have narrowed the linked bounds (min 20 pulls
+            // max up to 20), which would clamp the values written below. Reset
+            // both to the full range first; the valueChanged lambdas re-link
+            // them as the values are set.
+            row.minSpin->setRange(CARD_TEXT_MIN_SIZE, MAX_FONT_SIZE);
+            row.sizeSpin->setRange(MIN_FONT_SIZE, MAX_FONT_SIZE);
+
+            // The max spin is a size-only override. Without CardTextMaxSize it
+            // follows the CardText family size, and without CardText at all it
+            // must match cardTextMaxSize()'s default rather than the system
+            // startup size, which currentFontConfig() would otherwise bake in.
+            const int fallbackMax = cfg.fonts.contains(role) ? font.pointSize() : CARD_TEXT_MAX_SIZE;
+            int maxSize = cfg.cardTextMaxSize > 0 ? cfg.cardTextMaxSize : fallbackMax;
+            if (maxSize <= 0) {
+                maxSize = CARD_TEXT_MAX_SIZE;
+            }
+            int minSize = cfg.cardTextMinSize > 0 ? cfg.cardTextMinSize : themeManager->cardTextMinSize();
+            minSize = qBound(CARD_TEXT_MIN_SIZE, minSize, MAX_FONT_SIZE);
+            maxSize = qBound(MIN_FONT_SIZE, maxSize, MAX_FONT_SIZE);
+            if (maxSize < minSize) {
+                maxSize = minSize;
+            }
+
+            // Max first, then min: each value re-applies the linked bound, so
+            // the pair ends up consistent instead of clamping the smaller one.
+            row.sizeSpin->setValue(maxSize);
+            row.minSpin->setValue(minSize);
+            continue;
+        }
+
+        int size = font.pointSize();
+        if (size <= 0) {
+            size = qApp->font().pointSize();
+        }
+        if (size <= 0) {
+            size = FALLBACK_FONT_SIZE;
+        }
+        row.sizeSpin->setValue(qBound(MIN_FONT_SIZE, size, MAX_FONT_SIZE));
+    }
+    blockSignals(false);
+}
+
+FontConfig FontGridWidget::currentFontConfig() const
+{
+    FontConfig cfg;
+    QMetaEnum fontEnum = QMetaEnum::fromType<AppFont::Role>();
+    for (int i = 0; i < fontEnum.keyCount(); ++i) {
+        auto role = static_cast<AppFont::Role>(fontEnum.value(i));
+        const FontRow &row = fontRows.value(role);
+
+        // Canonical family + point size only: a fresh QFont carries default
+        // (non-bold, non-italic) weight/style, so nothing combo-side leaks in.
+        QFont font(row.familyCombo->currentFont().family());
+        font.setPointSize(row.sizeSpin->value());
+        cfg.fonts[role] = font;
+
+        if (role == AppFont::CardText && row.minSpin != nullptr) {
+            cfg.cardTextMinSize = row.minSpin->value();
+            cfg.cardTextMaxSize = row.sizeSpin->value();
+        }
+    }
+    return cfg;
+}
+
+void FontGridWidget::retranslateUi()
+{
+    QMetaEnum fontEnum = QMetaEnum::fromType<AppFont::Role>();
+    for (int i = 0; i < fontEnum.keyCount(); ++i) {
+        auto role = static_cast<AppFont::Role>(fontEnum.value(i));
+        const FontRow &row = fontRows.value(role);
+
+        row.label->setText(roleDisplayName(role));
+        row.label->setToolTip(tr(APP_FONT_DESCRIPTIONS.value(role, "")));
+        row.familyCombo->setToolTip(tr(APP_FONT_DESCRIPTIONS.value(role, "")));
+        row.familyCombo->setAccessibleName(roleDisplayName(role));
+        if (role == AppFont::CardText && row.minSpin != nullptr) {
+            row.minSpin->setToolTip(tr("Minimum card text size"));
+            row.minSpin->setAccessibleName(tr("Minimum card text size"));
+            row.minSpin->setSuffix(tr(" pt"));
+            row.sizeSpin->setToolTip(tr("Maximum card text size"));
+            row.sizeSpin->setAccessibleName(tr("Maximum card text size"));
+            row.sizeSpin->setSuffix(tr(" pt"));
+            continue;
+        }
+        row.sizeSpin->setToolTip(tr("Point size for %1").arg(roleDisplayName(role)));
+        row.sizeSpin->setAccessibleName(tr("Point size for %1").arg(roleDisplayName(role)));
+        row.sizeSpin->setSuffix(tr(" pt"));
+    }
+}

cockatrice/src/interface/palette_editor/font_grid_widget.h

@@ -0,0 +1,44 @@
+#ifndef COCKATRICE_FONT_GRID_WIDGET_H
+#define COCKATRICE_FONT_GRID_WIDGET_H
+
+#include "../theme_config.h"
+
+#include <QMap>
+#include <QWidget>
+#include <qtmetamacros.h>
+
+class QFontComboBox;
+class QGridLayout;
+class QLabel;
+class QSpinBox;
+
+// Per-role font editors — one (family, point size) row per AppFont::Role.
+// Owns the load/read round-trip for FontConfig but has no file I/O, mirroring
+// PaletteGridWidget. Only family and point size are edited; weight and italic
+// stay caller-side concerns and are stripped when reading back.
+class FontGridWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit FontGridWidget(QWidget *parent = nullptr);
+
+    void loadFonts(const FontConfig &cfg);
+    FontConfig currentFontConfig() const;
+    void retranslateUi();
+
+signals:
+    void fontsChanged();
+
+private:
+    struct FontRow
+    {
+        QLabel *label = nullptr;
+        QFontComboBox *familyCombo = nullptr;
+        QSpinBox *sizeSpin = nullptr;
+        QSpinBox *minSpin = nullptr; // CardText only: shrink-to-fit floor
+    };
+
+    QMap<AppFont::Role, FontRow> fontRows;
+};
+
+#endif // COCKATRICE_FONT_GRID_WIDGET_H

cockatrice/src/interface/palette_editor/palette_editor_dialog.cpp

@@ -2,6 +2,7 @@
 
 #include "../theme_config.h"
 #include "../theme_manager.h"
+#include "font_grid_widget.h"
 #include "palette_generator.h"
 #include "palette_grid_widget.h"
 #include "quick_setup_panel.h"
@@ -41,6 +42,7 @@ PaletteEditorDialog::PaletteEditorDialog(const QString &_themeDirPath, const QSt
 
     // Load both scheme configs upfront so switching is instant
     loadSchemes();
+    loadFonts();
 
     loadedScheme = themeManager->isDarkMode(themeDirPath) ? "Dark" : "Light";
 
@@ -125,6 +127,33 @@ void PaletteEditorDialog::setupUi()
     paletteGrid->setVisible(false);
     root->addWidget(paletteGrid, 1);
 
+    // Font section — sibling to the palette grid, sharing its collapsible
+    // advanced area pattern. Fonts are shared per theme, not split by scheme.
+    fontToggleButton = new QPushButton(this);
+    fontToggleButton->setCheckable(true);
+    fontToggleButton->setChecked(false);
+    fontToggleButton->setFlat(true);
+    fontToggleButton->setStyleSheet("QPushButton { text-align: left; padding: 5px 12px; font-weight: bold; }"
+                                    "QPushButton:checked { }");
+    root->addWidget(fontToggleButton);
+
+    fontSeparator = makeSeparator();
+    fontSeparator->setVisible(false);
+    root->addWidget(fontSeparator);
+
+    fontSection = new QWidget;
+    auto *fontSectionLayout = new QVBoxLayout(fontSection);
+    fontSectionLayout->setContentsMargins(0, 0, 0, 0);
+    fontSectionLayout->setSpacing(0);
+    fontNoteLabel = new QLabel(fontSection);
+    fontNoteLabel->setContentsMargins(12, 4, 12, 0);
+    fontNoteLabel->setWordWrap(true);
+    fontSectionLayout->addWidget(fontNoteLabel);
+    fontGrid = new FontGridWidget(fontSection);
+    fontSectionLayout->addWidget(fontGrid);
+    fontSection->setVisible(false);
+    root->addWidget(fontSection);
+
     // Footer
     root->addWidget(makeSeparator());
     footer = new QWidget;
@@ -157,6 +186,10 @@ void PaletteEditorDialog::setupUi()
     connect(autoApplyTimer, &QTimer::timeout, this, &PaletteEditorDialog::onApply);
     connect(quickSetupPanel, &QuickSetupPanel::valueChanged, this, &PaletteEditorDialog::onGenerateFromAccent);
     connect(paletteGrid, &PaletteGridWidget::paletteChanged, this, [this] { autoApplyTimer->start(); });
+    connect(fontGrid, &FontGridWidget::fontsChanged, this, [this] {
+        fontsDirty = true;
+        autoApplyTimer->start();
+    });
     connect(revertButton, &QPushButton::clicked, this, &PaletteEditorDialog::onRevertToDefault);
     connect(resetBtn, &QPushButton::clicked, this, &PaletteEditorDialog::onReset);
     connect(saveBtn, &QPushButton::clicked, this, &PaletteEditorDialog::onSave);
@@ -166,15 +199,32 @@ void PaletteEditorDialog::setupUi()
         paletteGridToggleButton->setText(open ? tr("▼  Edit Palette") : tr("▶  Edit Palette"));
         paletteGridSeparator->setVisible(open);
         paletteGrid->setVisible(open);
-
-        if (open) {
-            setMinimumHeight(680);
-            resize(width(), 680);
-        } else {
-            setMinimumHeight(220);
-            adjustSize(); // shrinks to fit just the visible content
-        }
+        updateAdvancedHeight();
     });
+    connect(fontToggleButton, &QPushButton::toggled, this, [this](bool open) {
+        fontToggleButton->setText(open ? tr("▼  Edit Fonts") : tr("▶  Edit Fonts"));
+        fontSeparator->setVisible(open);
+        fontSection->setVisible(open);
+        updateAdvancedHeight();
+    });
+}
+
+void PaletteEditorDialog::updateAdvancedHeight()
+{
+    int height = 220;
+    if (paletteGridToggleButton->isChecked()) {
+        height += 460;
+    }
+    if (fontToggleButton->isChecked()) {
+        height += 200;
+    }
+    setMinimumHeight(height);
+
+    if (paletteGrid->isVisible() || fontSection->isVisible()) {
+        resize(width(), height);
+    } else {
+        adjustSize(); // shrinks to fit just the visible content
+    }
 }
 
 void PaletteEditorDialog::retranslateUi()
@@ -189,12 +239,16 @@ void PaletteEditorDialog::retranslateUi()
     editingLabel->setText(tr("Editing:"));
     paletteGridToggleButton->setText(tr("▶  Edit Palette"));
     paletteGridToggleButton->setToolTip(tr("Show or hide the per-role colour grid for manual tweaks"));
+    fontToggleButton->setText(fontSection->isVisible() ? tr("▼  Edit Fonts") : tr("▶  Edit Fonts"));
+    fontToggleButton->setToolTip(tr("Show or hide the per-purpose font settings for this theme"));
+    fontNoteLabel->setText(tr("Fonts belong to theme %1 (shared by Light and Dark schemes)").arg(themeName));
+    fontGrid->retranslateUi();
     revertButton->setText(tr("↺  Revert to theme default"));
 
     resetBtn->setText(tr("Reset"));
     saveBtn->setText(tr("Save"));
-    resetBtn->setToolTip(tr("Discard unsaved edits and restore the last saved palette"));
-    saveBtn->setToolTip(tr("Write palette-%1.toml and reload the theme").arg(loadedScheme.toLower()));
+    resetBtn->setToolTip(tr("Discard unsaved edits and restore the last saved palette and fonts"));
+    saveBtn->setToolTip(tr("Write palette-%1.toml and fonts.toml, then reload the theme").arg(loadedScheme.toLower()));
 
     if (saveDir.isEmpty() || !ThemeManager::isDirReallyWritable(saveDir)) {
         saveBtn->setEnabled(false);
@@ -228,6 +282,13 @@ void PaletteEditorDialog::loadSchemes()
     }
 }
 
+void PaletteEditorDialog::loadFonts()
+{
+    savedFontConfig = ThemeManager::loadDefaultFontConfig(themeDirPath, themeName);
+    fontGrid->loadFonts(savedFontConfig);
+    fontsDirty = false;
+}
+
 void PaletteEditorDialog::seedAccentFromScheme(const QString &scheme)
 {
     QColor seed = workingConfig.value(scheme).colors.value(QPalette::Active).value(QPalette::Highlight);
@@ -258,6 +319,9 @@ void PaletteEditorDialog::onGenerateFromAccent(const QColor &accent, int intensi
 void PaletteEditorDialog::onApply()
 {
     themeManager->previewPalette(paletteGrid->currentPaletteConfig(), loadedScheme);
+    if (fontsDirty) {
+        themeManager->previewFonts(fontGrid->currentFontConfig());
+    }
 }
 
 void PaletteEditorDialog::onSave()
@@ -308,6 +372,20 @@ void PaletteEditorDialog::onSave()
         savedConfig[it.key()] = it.value();
     }
 
+    // Persist the shared per-theme fonts when they changed.
+    if (fontsDirty) {
+        const FontConfig fontCfg = fontGrid->currentFontConfig();
+        if (fontCfg != savedFontConfig) {
+            if (!ThemeManager::saveFontConfig(saveDir, fontCfg)) {
+                QMessageBox::warning(this, tr("Save failed"),
+                                     tr("Could not write %1 to:\n%2").arg(FontConfig::fileName(), saveDir));
+                return;
+            }
+            savedFontConfig = fontCfg;
+        }
+        fontsDirty = false;
+    }
+
     themeManager->reloadCurrentTheme();
     accept();
 }
@@ -316,6 +394,12 @@ void PaletteEditorDialog::onReset()
 {
     workingConfig[loadedScheme] = savedConfig[loadedScheme];
     paletteGrid->loadPalette(savedConfig[loadedScheme]);
+    // Restore the live theme before re-reading the grid: loadFonts resolves
+    // unset roles, and the preview has currentFonts pointing at the edited
+    // config until the theme is reloaded.
+    themeManager->reloadCurrentTheme();
+    fontGrid->loadFonts(savedFontConfig);
+    fontsDirty = false;
     seedAccentFromScheme(loadedScheme);
 }
 
@@ -350,6 +434,27 @@ void PaletteEditorDialog::onRevertToDefault()
     workingConfig[loadedScheme] = def;
     paletteGrid->loadPalette(def);
     seedAccentFromScheme(loadedScheme);
+
+    // Revert the shared per-theme fonts the same way: delete the user-written
+    // fonts.toml so the theme falls back to its shipped default, then reflect
+    // the resolved fonts in the editor.
+    QFile::remove(QDir(saveDir).absoluteFilePath(FontConfig::fileName()));
+
+    // Reload the live theme so the font revert takes effect immediately.
+    themeManager->reloadCurrentTheme();
+
+    const FontConfig fontDef = ThemeManager::loadDefaultFontConfig(themeDirPath, themeName);
+    savedFontConfig = fontDef;
+    fontGrid->loadFonts(fontDef);
+    fontsDirty = false;
+}
+
+void PaletteEditorDialog::reject()
+{
+    // Discard any unsaved live preview (palette and fonts) so closing without
+    // Save restores the active theme instead of leaking the preview globally.
+    themeManager->reloadCurrentTheme();
+    QDialog::reject();
 }
 
 void PaletteEditorDialog::changeEvent(QEvent *e)

cockatrice/src/interface/palette_editor/palette_editor_dialog.h

@@ -15,6 +15,7 @@ class QComboBox;
 class QDialogButtonBox;
 class QPushButton;
 class PaletteGridWidget;
+class FontGridWidget;
 class QuickSetupPanel;
 class QFrame;
 class QWidget;
@@ -25,6 +26,7 @@ class PaletteEditorDialog : public QDialog
 public:
     explicit PaletteEditorDialog(const QString &themeDirPath, const QString &themeName, QWidget *parent = nullptr);
     void loadSchemes();
+    void reject() override;
 
 private slots:
     void onSave();
@@ -38,8 +40,10 @@ private:
     void setupUi();
     void retranslateUi();
     void refreshChromePalettes();
+    void updateAdvancedHeight();
     void loadScheme(const QString &scheme); // snapshot current, switch, load
     void seedAccentFromScheme(const QString &scheme);
+    void loadFonts(); // shared per theme, not split by light/dark
 
     // Sub-widgets
     QWidget *header;
@@ -49,6 +53,11 @@ private:
     PaletteGridWidget *paletteGrid = nullptr;
     QPushButton *paletteGridToggleButton = nullptr;
     QFrame *paletteGridSeparator = nullptr;
+    FontGridWidget *fontGrid = nullptr;
+    QPushButton *fontToggleButton = nullptr;
+    QFrame *fontSeparator = nullptr;
+    QWidget *fontSection = nullptr;
+    QLabel *fontNoteLabel = nullptr;
     QWidget *footer;
     QComboBox *schemeComboBox = nullptr;
     QDialogButtonBox *buttonBox = nullptr;
@@ -68,10 +77,18 @@ private:
     QMap<QString, PaletteConfig> workingConfig;
     QMap<QString, PaletteConfig> savedConfig;
 
+    // Fonts are shared per theme (fonts.toml, not split by light/dark), so a
+    // single saved config suffices; the live edits are read from fontGrid.
+    FontConfig savedFontConfig;
+    // Set only by user-driven fontsChanged after the initial load completes.
+    // Gates both previewFonts and the fonts.toml write so a palette-only Save
+    // never materializes fallback fonts to disk.
+    bool fontsDirty = false;
+
     QTimer *autoApplyTimer = nullptr;
 
 protected:
     void changeEvent(QEvent *e) override;
 };
 
-#endif // COCKATRICE_PALETTE_EDITOR_DIALOG_H
+#endif // COCKATRICE_PALETTE_EDITOR_DIALOG_H

cockatrice/src/interface/palette_editor/palette_grid_widget.cpp

@@ -76,6 +76,18 @@ PaletteGridWidget::PaletteGridWidget(QWidget *parent) : QWidget(parent)
 
     layout = QtUtils::makeLayout<QVBoxLayout>(this);
     layout->addWidget(scroll);
+
+    connect(themeManager, &ThemeManager::fontsChanged, this, &PaletteGridWidget::applyInterfaceDefaultFont);
+}
+
+void PaletteGridWidget::applyInterfaceDefaultFont()
+{
+    // The editor's own chrome follows the InterfaceDefault theme role; bold stays caller-side.
+    for (auto *label : headerLabels) {
+        QFont headerFont = themeManager->appFont(AppFont::InterfaceDefault);
+        headerFont.setBold(true);
+        label->setFont(headerFont);
+    }
 }
 
 void PaletteGridWidget::buildGrid(QWidget *host)
@@ -101,7 +113,8 @@ void PaletteGridWidget::buildGrid(QWidget *host)
         auto *label = new QLabel(groupHeaders[col], host);
         label->setAlignment(Qt::AlignCenter);
         label->setToolTip(groupTips[col]);
-        label->setFont(QtUtils::boldFont(label->font()));
+        // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+        label->setFont(QtUtils::boldFont(themeManager->appFont(AppFont::InterfaceDefault)));
         label->setAutoFillBackground(true);
         label->setContentsMargins(4, 4, 4, 4);
         grid->addWidget(label, 0, col + 1);
@@ -146,7 +159,7 @@ void PaletteGridWidget::buildGrid(QWidget *host)
 
     auto *appHeader = new QLabel(tr("App colors"), host);
     appHeader->setToolTip(tr("Application-specific colors layered on top of the Qt palette"));
-    appHeader->setFont(QtUtils::boldFont(appHeader->font()));
+    appHeader->setFont(QtUtils::boldFont(themeManager->appFont(AppFont::InterfaceDefault)));
     appHeader->setAutoFillBackground(true);
     appHeader->setContentsMargins(4, 4, 4, 4);
     grid->addWidget(appHeader, appHeaderRow, 0, 1, 4);

cockatrice/src/interface/palette_editor/palette_grid_widget.h

@@ -34,6 +34,10 @@ private:
     void changeEvent(QEvent *e);
     void refreshChromePalettes();
 
+private slots:
+    void applyInterfaceDefaultFont();
+
+private:
     QMap<QPalette::ColorGroup, QMap<QPalette::ColorRole, ColorButton *>> colorButtons;
     QMap<AppColor::Role, ColorButton *> appColorButtons;
     QScrollArea *scroll;

cockatrice/src/interface/palette_editor/quick_setup_panel.cpp

@@ -1,5 +1,6 @@
 #include "quick_setup_panel.h"
 
+#include "../theme_manager.h"
 #include "color_button.h"
 
 #include <QApplication>
@@ -28,10 +29,15 @@ QuickSetupPanel::QuickSetupPanel(QWidget *parent) : QWidget(parent)
 
     labelLow = new QLabel(this);
     labelHigh = new QLabel(this);
-    QFont small = labelLow->font();
-    small.setPointSizeF(small.pointSizeF() * 0.82);
-    labelLow->setFont(small);
-    labelHigh->setFont(small);
+    // Family comes from the InterfaceDefault theme role; the *0.82 size stays caller-side.
+    auto applySmallFont = [this]() {
+        QFont small = themeManager->appFont(AppFont::InterfaceDefault);
+        small.setPointSizeF(small.pointSizeF() * 0.82);
+        labelLow->setFont(small);
+        labelHigh->setFont(small);
+    };
+    applySmallFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, applySmallFont);
     QPalette dimmed = labelLow->palette();
     dimmed.setColor(QPalette::WindowText, qApp->palette().color(QPalette::Mid));
     labelLow->setPalette(dimmed);

cockatrice/src/interface/theme_config.cpp

@@ -304,4 +304,183 @@ QPalette PaletteConfig::apply(QPalette base) const
     }
 
     return base;
-}
+}
+
+bool FontConfig::hasFonts() const
+{
+    return !fonts.isEmpty() || cardTextMinSize != 1 || cardTextMaxSize > 0;
+}
+
+QString FontConfig::toToml() const
+{
+    QMetaEnum roleEnum = QMetaEnum::fromType<AppFont::Role>();
+
+    QString entries;
+
+    for (auto it = fonts.cbegin(); it != fonts.cend(); ++it) {
+        const char *roleName = roleEnum.valueToKey(it.key());
+
+        if (!roleName) {
+            continue;
+        }
+
+        QString family = it.value().family().trimmed();
+        int pointSize = it.value().pointSize();
+
+        if (family.isEmpty() || pointSize <= 0) {
+            continue;
+        }
+
+        entries += QString("%1 = \"%2, %3\"\n").arg(QString(roleName), -20).arg(family).arg(pointSize);
+    }
+
+    if (cardTextMinSize != 1) {
+        entries += QString("%1 = %2\n").arg(QStringLiteral("CardTextMinSize"), -20).arg(cardTextMinSize);
+    }
+
+    if (cardTextMaxSize > 0) {
+        entries += QString("%1 = %2\n").arg(QStringLiteral("CardTextMaxSize"), -20).arg(cardTextMaxSize);
+    }
+
+    if (entries.isEmpty()) {
+        return {};
+    }
+
+    return "[Fonts]\n" + entries + "\n";
+}
+
+QString FontConfig::fileName()
+{
+    return "fonts.toml";
+}
+
+FontConfig FontConfig::fromFile(const QString &filePath)
+{
+    FontConfig cfg;
+
+    QFile f(filePath);
+
+    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        return cfg;
+    }
+
+    QMetaEnum roleEnum = QMetaEnum::fromType<AppFont::Role>();
+
+    QString currentSection;
+
+    QTextStream in(&f);
+
+    while (!in.atEnd()) {
+        QString line = in.readLine().trimmed();
+
+        if (line.isEmpty() || line.startsWith('#') || line.startsWith(';')) {
+            continue;
+        }
+
+        if (line.startsWith('[') && line.endsWith(']')) {
+            currentSection = line.mid(1, line.length() - 2).trimmed();
+            continue;
+        }
+
+        if (currentSection.compare("Fonts", Qt::CaseInsensitive) != 0) {
+            continue;
+        }
+
+        int eq = line.indexOf('=');
+
+        if (eq < 0) {
+            continue;
+        }
+
+        QString key = line.left(eq).trimmed();
+        QString value = line.mid(eq + 1).trimmed();
+
+        // Strip inline comments if preceded by whitespace
+        for (int i = 1; i < value.size(); ++i) {
+            if ((value[i] == '#' || value[i] == ';') && value[i - 1].isSpace()) {
+                value = value.left(i).trimmed();
+                break;
+            }
+        }
+
+        // Strip surrounding quotes, if any
+        if (value.size() >= 2 &&
+            ((value.startsWith('"') && value.endsWith('"')) || (value.startsWith('\'') && value.endsWith('\'')))) {
+            value = value.mid(1, value.size() - 2).trimmed();
+        }
+
+        // CardText size bounds: bare integers, e.g. CardTextMinSize = 2.
+        // Tolerate quoting like the family entries; skip invalid lines.
+        QString sizeKey = key;
+        if (sizeKey.startsWith("AppFont::")) {
+            sizeKey = sizeKey.mid(QStringLiteral("AppFont::").size());
+        }
+        if (sizeKey.compare("CardTextMinSize", Qt::CaseInsensitive) == 0) {
+            bool ok = false;
+            int minSize = value.trimmed().toInt(&ok);
+            if (!ok || minSize <= 0) {
+                continue;
+            }
+            cfg.cardTextMinSize = minSize;
+            continue;
+        }
+        if (sizeKey.compare("CardTextMaxSize", Qt::CaseInsensitive) == 0) {
+            bool ok = false;
+            int maxSize = value.trimmed().toInt(&ok);
+            if (!ok || maxSize <= 0) {
+                continue;
+            }
+            cfg.cardTextMaxSize = maxSize;
+            continue;
+        }
+
+        int comma = value.lastIndexOf(',');
+
+        if (comma < 0) {
+            continue;
+        }
+
+        QString family = value.left(comma).trimmed();
+
+        // Tolerate a partially-quoted family, e.g. "Inter", 10
+        if (family.size() >= 2 &&
+            ((family.startsWith('"') && family.endsWith('"')) || (family.startsWith('\'') && family.endsWith('\'')))) {
+            family = family.mid(1, family.size() - 2).trimmed();
+        }
+
+        bool ok = false;
+        int pointSize = value.mid(comma + 1).trimmed().toInt(&ok);
+
+        if (!ok || family.isEmpty() || pointSize <= 0) {
+            continue;
+        }
+
+        if (key.startsWith("AppFont::")) {
+            key = key.mid(QStringLiteral("AppFont::").size());
+        }
+
+        int roleInt = roleEnum.keyToValue(key.toUtf8().constData());
+
+        if (roleInt < 0) {
+            continue;
+        }
+
+        // Canonical family + point size only: a fresh QFont carries default
+        // (non-bold, non-italic) weight/style, so nothing caller-side leaks in.
+        // No validation against installed fonts; Qt substitution applies.
+        QFont font(family);
+        font.setPointSize(pointSize);
+        cfg.fonts[static_cast<AppFont::Role>(roleInt)] = font;
+    }
+
+    return cfg;
+}
+
+FontConfig FontConfig::fromThemeDir(const QString &themeDirPath)
+{
+    if (themeDirPath.isEmpty()) {
+        return {};
+    }
+
+    return fromFile(QDir(themeDirPath).absoluteFilePath(fileName()));
+}

cockatrice/src/interface/theme_config.h

@@ -2,6 +2,7 @@
 #define COCKATRICE_THEME_CONFIG_H
 
 #include <QColor>
+#include <QFont>
 #include <QMap>
 #include <QPalette>
 #include <QSharedPointer>
@@ -23,6 +24,23 @@ enum Role
 Q_ENUM_NS(Role)
 } // namespace AppColor
 
+// Application-specific font roles, one configurable family + point size per
+// purpose. Stored in a shared fonts.toml under a [Fonts] section (one file per
+// theme, not split by light/dark). Only family and point size are stored;
+// weight/italic are stripped on load and stay caller-side concerns.
+namespace AppFont
+{
+Q_NAMESPACE
+enum Role
+{
+    InterfaceDefault,
+    ChatLog,
+    CardText,
+    DeckList,
+};
+Q_ENUM_NS(Role)
+} // namespace AppFont
+
 struct ThemeConfig
 {
     QString colorScheme;
@@ -60,4 +78,41 @@ struct PaletteConfig
     QPalette apply(QPalette base) const;
 };
 
-#endif // COCKATRICE_THEME_CONFIG_H
+/** @brief Per-purpose font configuration, stored as family + point size only.
+ *
+ * Serialized to a shared fonts.toml file with a [Fonts] section, e.g.
+ * @code
+ * [Fonts]
+ * InterfaceDefault = "Inter, 10"
+ * CardText = "Noto Serif, 12"
+ * CardTextMinSize = 1
+ * @endcode
+ * CardText stores family + MAX size; cardTextMinSize stores the overlay
+ * shrink-to-fit floor (omitted from TOML when 1).
+ */
+struct FontConfig
+{
+    QMap<AppFont::Role, QFont> fonts;
+    int cardTextMinSize = 1;
+    /// Optional size-only maximum for CardText, used by the retired maxFontSize
+    /// migration so seeding it does not have to pin a family.
+    int cardTextMaxSize = 0;
+
+    bool operator==(const FontConfig &rhs) const
+    {
+        return fonts == rhs.fonts && cardTextMinSize == rhs.cardTextMinSize && cardTextMaxSize == rhs.cardTextMaxSize;
+    }
+    bool operator!=(const FontConfig &rhs) const
+    {
+        return !(*this == rhs);
+    }
+    bool hasFonts() const;
+    QString toToml() const;
+
+    static QString fileName();
+
+    static FontConfig fromFile(const QString &filePath);
+    static FontConfig fromThemeDir(const QString &themeDirPath);
+};
+
+#endif // COCKATRICE_THEME_CONFIG_H

cockatrice/src/interface/theme_manager.cpp

@@ -12,6 +12,7 @@
 #include <QFile>
 #include <QFileInfo>
 #include <QFlags>
+#include <QFontDatabase>
 #include <QGuiApplication>
 #include <QIODevice>
 #include <QLatin1Char>
@@ -127,8 +128,10 @@ static QString usableDefaultStyle(const QString &style)
 ThemeManager::ThemeManager(QObject *parent) : QObject(parent)
 {
     defaultStyleName = usableDefaultStyle(qApp->style()->objectName());
-    // Capture the untouched application palette before any theme is applied.
+    // Capture the untouched application palette and font before any theme is
+    // applied.
     defaultPalette = qApp->palette();
+    defaultFont = qApp->font();
     ensureThemeDirectoryExists();
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
     connect(QGuiApplication::styleHints(), &QStyleHints::colorSchemeChanged, this, [this] {
@@ -440,6 +443,46 @@ PaletteConfig ThemeManager::loadDefaultPaletteConfig(const QString &themeDirPath
     return cfg;
 }
 
+FontConfig ThemeManager::loadFontConfig(const QString &themeDirPath)
+{
+    if (themeDirPath.isEmpty()) {
+        return {};
+    }
+    return FontConfig::fromThemeDir(themeDirPath);
+}
+
+FontConfig ThemeManager::loadDefaultFontConfig(const QString &themeDirPath, const QString &themeName)
+{
+    FontConfig cfg = FontConfig::fromThemeDir(themeDirPath);
+    if (!cfg.hasFonts()) {
+        // The shipped fonts.toml may live in the system theme directory rather
+        // than the resolved (user) theme directory, so built-in themes still
+        // get their curated fonts.
+        cfg = FontConfig::fromThemeDir(QDir(systemThemesBasePath()).absoluteFilePath(themeName));
+    }
+    return cfg;
+}
+
+bool ThemeManager::saveFontConfig(const QString &themeDirPath, const FontConfig &cfg)
+{
+    if (themeDirPath.isEmpty()) {
+        return false;
+    }
+
+    QDir dir(themeDirPath);
+    if (!dir.exists()) {
+        dir.mkpath(".");
+    }
+
+    QFile f(dir.absoluteFilePath(FontConfig::fileName()));
+    if (!f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
+        return false;
+    }
+
+    QTextStream(&f) << cfg.toToml();
+    return true;
+}
+
 bool ThemeManager::commitPalette(const QString &themeDirPath, const QString &colorScheme, const PaletteConfig &cfg)
 {
     if (!savePaletteConfig(themeDirPath, colorScheme, cfg)) {
@@ -488,6 +531,24 @@ void ThemeManager::previewPalette(const PaletteConfig &cfg, const QString &schem
     applyStyleAndPalette(themeName, themeCfg, cfg, scheme);
 }
 
+void ThemeManager::previewFonts(const FontConfig &cfg)
+{
+    currentFonts = cfg;
+
+    // QApplication::setFont already sends a font change to every widget, so a
+    // repolish pass is not needed for fonts (unlike the palette path).
+    const auto it = cfg.fonts.constFind(AppFont::InterfaceDefault);
+    if (it != cfg.fonts.constEnd()) {
+        qApp->setFont(it.value());
+    } else {
+        // A config without InterfaceDefault means "no override": restore the
+        // startup font instead of leaving the last preview applied.
+        qApp->setFont(defaultFont);
+    }
+
+    emit fontsChanged();
+}
+
 void ThemeManager::applyStyleAndPalette(const QString &themeName,
                                         const ThemeConfig &themeCfg,
                                         const PaletteConfig &palCfg,
@@ -591,6 +652,80 @@ QColor ThemeManager::appColor(AppColor::Role role) const
     return accent;
 }
 
+QFont ThemeManager::appFont(AppFont::Role role) const
+{
+    const auto it = currentFonts.fonts.constFind(role);
+    if (it != currentFonts.fonts.constEnd()) {
+        return it.value();
+    }
+
+    // Role fallbacks preserve the pre-theme defaults when no fonts.toml is
+    // present: an unset role resolves to the application font. Surfaces that
+    // hardcoded a different family ask for it explicitly: counter painters
+    // through cardTextFont(), the deck view headers and printed deck list
+    // through deckListFont(), the report dialogs through
+    // report_utils::reportLogFont(). Only the family basis is fixed there;
+    // sizes stay caller-side.
+    return qApp->font();
+}
+
+bool ThemeManager::hasAppFont(AppFont::Role role) const
+{
+    return currentFonts.fonts.contains(role);
+}
+
+QFont ThemeManager::cardTextFont() const
+{
+    if (hasAppFont(AppFont::CardText)) {
+        return appFont(AppFont::CardText);
+    }
+    QFont serifFont(QStringLiteral("Serif"));
+    serifFont.setStyleHint(QFont::Serif);
+    serifFont.setPointSize(12);
+    return serifFont;
+}
+
+QFont ThemeManager::deckListFont() const
+{
+    if (hasAppFont(AppFont::DeckList)) {
+        return appFont(AppFont::DeckList);
+    }
+    QFont serifFont(QStringLiteral("Serif"));
+    serifFont.setStyleHint(QFont::Serif);
+    return serifFont;
+}
+
+QFont ThemeManager::defaultAppFont(AppFont::Role /*role*/) const
+{
+    // No per-role scaling and no preview: an unset role resolves to the font
+    // captured at startup, which is what the theme falls back to once the
+    // editor closes.
+    return defaultFont;
+}
+
+int ThemeManager::cardTextMaxSize() const
+{
+    if (currentFonts.cardTextMaxSize > 0) {
+        return currentFonts.cardTextMaxSize;
+    }
+    const auto it = currentFonts.fonts.constFind(AppFont::CardText);
+    if (it != currentFonts.fonts.constEnd()) {
+        const int size = it.value().pointSize();
+        if (size > 0) {
+            return size;
+        }
+    }
+    return 12;
+}
+
+int ThemeManager::cardTextMinSize() const
+{
+    if (currentFonts.cardTextMinSize > 0) {
+        return currentFonts.cardTextMinSize;
+    }
+    return 1;
+}
+
 void ThemeManager::themeChangedSlot()
 {
     QString themeName = SettingsCache::instance().getThemeName();
@@ -642,6 +777,19 @@ void ThemeManager::themeChangedSlot()
 
     applyStyleAndPalette(themeName, themeCfg, palette, activeScheme);
 
+    // ── Load fonts: shared per theme, no light/dark split ───────────────────
+    FontConfig fonts = loadDefaultFontConfig(dirPath, themeName);
+    currentFonts = fonts;
+    const auto fontIt = currentFonts.fonts.constFind(AppFont::InterfaceDefault);
+    if (fontIt != currentFonts.fonts.constEnd()) {
+        qApp->setFont(fontIt.value());
+    } else {
+        // No theme font: restore the pristine application font captured at
+        // startup, so a reverted preview cannot leak into the live theme.
+        qApp->setFont(defaultFont);
+    }
+    emit fontsChanged();
+
     QStringList resources;
     if (!dirPath.isEmpty()) {
         resources << dir.absolutePath();

cockatrice/src/interface/theme_manager.h

@@ -11,6 +11,7 @@
 
 #include <QBrush>
 #include <QColor>
+#include <QFont>
 #include <QLoggingCategory>
 #include <QMap>
 #include <QObject>
@@ -47,10 +48,15 @@ private:
     // palette is applied. Used as the base when a theme supplies no palette, so
     // switching away from a custom palette restores the original colours.
     QPalette defaultPalette;
+    // Pristine application font captured at startup, before any theme font is
+    // applied. Restored when a theme (or a preview) supplies no InterfaceDefault
+    // font, so switching away from a themed font cannot leave it behind.
+    QFont defaultFont;
     QString currentThemePath;
     std::array<QBrush, Role::MaxRole + 1> brushes;
     QStringMap availableThemes;
     QMap<AppColor::Role, QColor> currentAppColors;
+    FontConfig currentFonts;
     /*
       Internal cache for multiple backgrounds
     */
@@ -105,6 +111,9 @@ public:
     // Load/save per-scheme palette colors
     static PaletteConfig loadPaletteConfig(const QString &themeDirPath, const QString &colorScheme);
     static bool savePaletteConfig(const QString &themeDirPath, const QString &colorScheme, const PaletteConfig &cfg);
+    // Load/save shared per-theme fonts (fonts.toml, not split by scheme)
+    static FontConfig loadFontConfig(const QString &themeDirPath);
+    static bool saveFontConfig(const QString &themeDirPath, const FontConfig &cfg);
     // Resolve prefix to a scheme-qualified "theme:" path. Existence is probed
     // internally across the formats themes may ship (.png/.jpg/.svg), so
     // callers load the returned path directly. Prefers "<prefix>-<dark|light>"
@@ -123,6 +132,9 @@ public:
     // theme directory when it is absent from the resolved (user) directory.
     static PaletteConfig
     loadDefaultPaletteConfig(const QString &themeDirPath, const QString &themeName, const QString &colorScheme);
+    // Load the theme's shipped default fonts, falling back to the system theme
+    // directory when fonts.toml is absent from the resolved (user) directory.
+    static FontConfig loadDefaultFontConfig(const QString &themeDirPath, const QString &themeName);
     /** @brief Writes cfg to disk as the theme's palette-<scheme>.toml and updates the
      *         theme's stored colour scheme to match. Shared by PaletteEditorDialog::onSave
      *         and FirstRunWizard's theme step so the two "generate + keep" paths can't drift. */
@@ -132,10 +144,36 @@ public:
 
     void reloadCurrentTheme();
     void previewPalette(const PaletteConfig &cfg, const QString &scheme);
+    void previewFonts(const FontConfig &cfg);
 
     // Resolves an application color role: the theme's stored [AppColors] value
     // when present, otherwise a palette-accent-derived fallback.
     QColor appColor(AppColor::Role role) const;
+    /** @brief Resolves an application font role: the theme's stored [Fonts]
+     *         value when present, otherwise the application font. Roles that
+     *         had a historical hardcoded family ask for it through
+     *         cardTextFont() and deckListFont() instead. */
+    QFont appFont(AppFont::Role role) const;
+    /** @brief Whether the active theme defines this role in fonts.toml. */
+    bool hasAppFont(AppFont::Role role) const;
+    /** @brief The CardText role with its historical Serif fallback. Used by the
+     *         counter painters, which were Serif before the role existed. */
+    QFont cardTextFont() const;
+    /** @brief The DeckList role with its historical Serif fallback. Used by the
+     *         two surfaces that hardcoded Serif before the role existed (the
+     *         deck view zone headers and the printed deck list); every other
+     *         DeckList reader falls back to the application font. */
+    QFont deckListFont() const;
+    /** @brief Resolves an application font role against the startup font only,
+     *         ignoring any previewed config in currentFonts. Editors that show
+     *         "what this role resolves to" must use this, because appFont()
+     *         reflects a live preview while the editor is open. */
+    QFont defaultAppFont(AppFont::Role role) const;
+    /** @brief CardText max size: stored CardTextMaxSize, else the CardText
+     *         point size, else 12. */
+    int cardTextMaxSize() const;
+    /** @brief CardText shrink-to-fit floor: stored CardTextMinSize, else 1. */
+    int cardTextMinSize() const;
 
     QBrush &getBgBrush(Role zone);
     QBrush getExtraBgBrush(Role zone, int zoneId = 0);
@@ -144,6 +182,7 @@ protected slots:
 signals:
     void themeChanged();
     void paletteChanged();
+    void fontsChanged();
 };
 
 extern ThemeManager *themeManager;

cockatrice/src/interface/widgets/cards/art_crop_attribution.cpp

@@ -1,5 +1,6 @@
 #include "art_crop_attribution.h"
 
+#include "../../theme_manager.h"
 #include "libcockatrice/card/printing/printing_info.h"
 
 #include <QColor>
@@ -35,7 +36,10 @@ QRectF paintArtAttribution(QPainter &painter,
 
     painter.save();
 
+    // Family comes from the CardText theme role; the incoming painter size
+    // stays the basis for the scale factor exactly as before.
     QFont font = painter.font();
+    font.setFamily(themeManager->appFont(AppFont::CardText).family());
     font.setPointSizeF(qMax(6.0, font.pointSizeF() * scale));
     painter.setFont(font);
 

cockatrice/src/interface/widgets/cards/card_info_picture_with_text_overlay_widget.cpp

@@ -1,5 +1,7 @@
 #include "card_info_picture_with_text_overlay_widget.h"
 
+#include "../../theme_manager.h"
+
 #include <QBrush>
 #include <QChar>
 #include <QFont>
@@ -43,6 +45,7 @@ CardInfoPictureWithTextOverlayWidget::CardInfoPictureWithTextOverlayWidget(QWidg
       fontSize(fontSize), textAlignment(alignment), highlighted(false)
 {
     this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+    connect(themeManager, &ThemeManager::fontsChanged, this, &CardInfoPictureWithTextOverlayWidget::applyCardTextFont);
 }
 
 /**
@@ -84,6 +87,7 @@ void CardInfoPictureWithTextOverlayWidget::setOutlineColor(const QColor &color)
 void CardInfoPictureWithTextOverlayWidget::setFontSize(const int size)
 {
     fontSize = size > 0 ? size : 1;
+    hasExplicitFontSize = true;
     update();
 }
 
@@ -97,6 +101,13 @@ void CardInfoPictureWithTextOverlayWidget::setTextAlignment(const Qt::Alignment
     update();
 }
 
+void CardInfoPictureWithTextOverlayWidget::applyCardTextFont()
+{
+    // The overlay paint reads the CardText role font at paint time, so a
+    // theme font change only needs a repaint here.
+    update();
+}
+
 void CardInfoPictureWithTextOverlayWidget::setHighlighted(bool _highlighted)
 {
     if (highlighted == _highlighted) {
@@ -168,9 +179,13 @@ void CardInfoPictureWithTextOverlayWidget::paintEvent(QPaintEvent *event)
         return;
     }
 
-    // Calculate the optimal font size
-    QFont font = painter.font();
-    int optimalFontSize = fontSize; // Start with the user-defined font size
+    // Calculate the optimal font size. The family comes from the CardText
+    // theme role; the start size is the explicit size when set (e.g. deck
+    // preview 24), else the theme max, shrinking down to the theme min floor.
+    QFont font = themeManager->appFont(AppFont::CardText);
+    const int themeMin = std::max(1, themeManager->cardTextMinSize());
+    const int themeMax = std::max(themeMin, std::max(1, themeManager->cardTextMaxSize()));
+    int optimalFontSize = hasExplicitFontSize ? std::max(1, fontSize) : themeMax;
     const QFontMetrics baseMetrics(font);
     int textWidth = pixmapRect.width();
 
@@ -188,7 +203,7 @@ void CardInfoPictureWithTextOverlayWidget::paintEvent(QPaintEvent *event)
         }
 
         --optimalFontSize;
-    } while (optimalFontSize > 1);
+    } while (optimalFontSize > themeMin);
 
     // Apply the calculated font size
     painter.setFont(font);
@@ -215,7 +230,7 @@ void CardInfoPictureWithTextOverlayWidget::paintEvent(QPaintEvent *event)
     int totalTextHeight = wrappedText.count('\n') * fontMetrics.height() + fontMetrics.height();
 
     // Adjust font size if the total text height exceeds the pixmap height
-    while (totalTextHeight > pixmapRect.height() && optimalFontSize > 1) {
+    while (totalTextHeight > pixmapRect.height() && optimalFontSize > themeMin) {
         --optimalFontSize;
         font.setPointSize(optimalFontSize);
         painter.setFont(font);
@@ -284,8 +299,10 @@ QSize CardInfoPictureWithTextOverlayWidget::minimumSizeHint() const
     const QSize pixmapSize = pixmap.isNull() ? QSize(0, 0) : pixmap.size();
 
     // Get the font metrics for the overlay text
-    QFont font;
-    font.setPointSize(fontSize);
+    QFont font = themeManager->appFont(AppFont::CardText);
+    const int themeMin = std::max(1, themeManager->cardTextMinSize());
+    const int themeMax = std::max(themeMin, std::max(1, themeManager->cardTextMaxSize()));
+    font.setPointSize(hasExplicitFontSize ? std::max(1, fontSize) : themeMax);
     const QFontMetrics fontMetrics(font);
 
     // Calculate the height required for the text

cockatrice/src/interface/widgets/cards/card_info_picture_with_text_overlay_widget.h

@@ -47,6 +47,9 @@ protected:
     void mousePressEvent(QMouseEvent *event) override;
     [[nodiscard]] QSize minimumSizeHint() const override;
 
+private slots:
+    void applyCardTextFont();
+
 private:
     void drawOutlinedText(QPainter &painter,
                           const QRect &textRect,
@@ -57,6 +60,7 @@ private:
     QColor textColor;
     QColor outlineColor;
     int fontSize;
+    bool hasExplicitFontSize = false;
     Qt::Alignment textAlignment;
     bool highlighted;
 };

cockatrice/src/interface/widgets/deck_analytics/resizable_panel.cpp

@@ -1,5 +1,6 @@
 #include "resizable_panel.h"
 
+#include "../interface/theme_manager.h"
 #include "abstract_analytics_panel_widget.h"
 #include "libcockatrice/utility/qt_utils.h"
 
@@ -12,6 +13,7 @@
 #include <QDropEvent>
 #include <QEvent>
 #include <QFlags>
+#include <QFont>
 #include <QFrame>
 #include <QHBoxLayout>
 #include <QMimeData>
@@ -93,9 +95,17 @@ ResizablePanel::ResizablePanel(const QString &_typeId, AbstractAnalyticsPanelWid
 
     dragButton->setStyleSheet(QString("QPushButton { "
                                       "background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 %1, stop:1 %2); "
-                                      "border: none; color: %3; font-size: 10px; }"
+                                      "border: none; color: %3; }"
                                       "QPushButton:hover { background: %4; }")
                                   .arg(mid.name(), dark.name(), placeholderText.name(), midLight.name()));
+    // Family comes from the InterfaceDefault theme role; the 10px size stays caller-side.
+    auto applyDragFont = [this]() {
+        QFont dragFont = themeManager->appFont(AppFont::InterfaceDefault);
+        dragFont.setPixelSize(10);
+        dragButton->setFont(dragFont);
+    };
+    applyDragFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, applyDragFont);
 
     resizeHandle->setStyleSheet(QString("QWidget { background: qlineargradient(x1:0, y1:0, x2:0, y2:1, "
                                         "stop:0 %1, stop:1 %2); }")

cockatrice/src/interface/widgets/deck_editor/deck_list_style_proxy.cpp

@@ -1,5 +1,7 @@
 #include "deck_list_style_proxy.h"
 
+#include "../../theme_manager.h"
+
 #include <QBrush>
 #include <QColor>
 #include <QFont>
@@ -8,6 +10,16 @@
 #include <libcockatrice/models/deck_list/deck_list_model.h>
 #include <qnamespace.h>
 
+DeckListStyleProxy::DeckListStyleProxy(QObject *parent) : QIdentityProxyModel(parent)
+{
+    // FontRole data reads the DeckList role live; rebroadcast so attached
+    // views re-query instead of waiting for an incidental repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        emit layoutAboutToBeChanged();
+        emit layoutChanged();
+    });
+}
+
 QVariant DeckListStyleProxy::data(const QModelIndex &index, int role) const
 {
     QModelIndex src = mapToSource(index);
@@ -20,7 +32,8 @@ QVariant DeckListStyleProxy::data(const QModelIndex &index, int role) const
     bool isCard = src.data(DeckRoles::IsCardRole).toBool();
 
     if (role == Qt::FontRole && !isCard) {
-        QFont f;
+        // Family comes from the DeckList theme role; bold stays caller-side.
+        QFont f = themeManager->appFont(AppFont::DeckList);
         f.setBold(true);
         return f;
     }

cockatrice/src/interface/widgets/deck_editor/deck_list_style_proxy.h

@@ -8,7 +8,7 @@ class DeckListStyleProxy : public QIdentityProxyModel
 {
     Q_OBJECT
 public:
-    using QIdentityProxyModel::QIdentityProxyModel;
+    explicit DeckListStyleProxy(QObject *parent = nullptr);
 
     [[nodiscard]] QVariant data(const QModelIndex &index, int role) const override;
 };

cockatrice/src/interface/widgets/dialogs/dlg_my_reports.cpp

@@ -1,11 +1,13 @@
 #include "dlg_my_reports.h"
 
+#include "../interface/theme_manager.h"
 #include "../utility/report_utils.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 #include "libcockatrice/protocol/pb/serverinfo_report.pb.h"
 
 #include <QAbstractItemView>
+#include <QFont>
 #include <QGroupBox>
 #include <QHBoxLayout>
 #include <QHeaderView>
@@ -24,7 +26,6 @@
 #include <libcockatrice/protocol/pb/response_report_details.pb.h>
 #include <libcockatrice/protocol/pb/response_report_my_list.pb.h>
 #include <libcockatrice/protocol/pending_command.h>
-#include <libcockatrice/utility/qt_utils.h>
 #include <qnamespace.h>
 #include <string>
 
@@ -69,7 +70,8 @@ DlgMyReports::DlgMyReports(AbstractClient *_client, QWidget *parent)
     auto *chatGroup = new QGroupBox(tr("Chat Log Context"));
     chatLogEdit = new QTextEdit;
     chatLogEdit->setReadOnly(true);
-    chatLogEdit->setFont(QtUtils::monospaceFont());
+    applyChatLogFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &DlgMyReports::applyChatLogFont);
     auto *chatLayout = new QVBoxLayout(chatGroup);
     chatLayout->setContentsMargins(4, 4, 4, 4);
     chatLayout->addWidget(chatLogEdit);
@@ -122,6 +124,11 @@ DlgMyReports::DlgMyReports(AbstractClient *_client, QWidget *parent)
     refreshList();
 }
 
+void DlgMyReports::applyChatLogFont()
+{
+    chatLogEdit->setFont(report_utils::reportLogFont());
+}
+
 void DlgMyReports::refreshList()
 {
     selectedReportIdBeforeRefresh = selectedReportId;

cockatrice/src/interface/widgets/dialogs/dlg_my_reports.h

@@ -29,6 +29,7 @@ private slots:
     void reportDetailsResponse(const Response &response);
     void addComment();
     void addCommentResponse(const Response &response);
+    void applyChatLogFont();
 
 private:
     void loadReportDetails(const ServerInfo_Report &report);

cockatrice/src/interface/widgets/dialogs/dlg_report_user.cpp

@@ -1,10 +1,13 @@
 #include "dlg_report_user.h"
 
+#include "../interface/theme_manager.h"
+#include "../utility/report_utils.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 
 #include <QComboBox>
 #include <QDialogButtonBox>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QLabel>
@@ -91,7 +94,8 @@ DlgReportUser::DlgReportUser(AbstractClient *_client,
     auto *chatLayout = new QVBoxLayout(chatGroup);
     chatLogEdit = new QTextEdit;
     chatLogEdit->setReadOnly(true);
-    chatLogEdit->setFont(QtUtils::monospaceFont());
+    applyChatLogFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &DlgReportUser::applyChatLogFont);
     if (!_autoChatLog.isEmpty()) {
         chatLogEdit->setPlainText(_autoChatLog);
     } else {
@@ -120,6 +124,11 @@ DlgReportUser::DlgReportUser(AbstractClient *_client,
     layout->addWidget(buttonBox);
 }
 
+void DlgReportUser::applyChatLogFont()
+{
+    chatLogEdit->setFont(report_utils::reportLogFont());
+}
+
 void DlgReportUser::actSubmit()
 {
     const QString description = descriptionEdit->toPlainText().trimmed();

cockatrice/src/interface/widgets/dialogs/dlg_report_user.h

@@ -27,6 +27,7 @@ public:
 private slots:
     void actSubmit();
     void reportResponse(const Response &response);
+    void applyChatLogFont();
 
 private:
     static QString categoryLabel(const QString &key);

cockatrice/src/interface/widgets/dialogs/dlg_shared_decks_preview.cpp

@@ -2,6 +2,7 @@
 
 #include "../deck_share/shared_deck_preview_widget.h"
 #include "../general/layout_containers/flow_widget.h"
+#include "../interface/theme_manager.h"
 
 #include <QAbstractButton>
 #include <QDateTime>
@@ -35,9 +36,14 @@ DlgSharedDecksPreview::DlgSharedDecksPreview(QWidget *parent,
     // QLabels render AutoText and markup would otherwise be shown as rich text.
     auto *titleLabel =
         new QLabel(tr("Share: %1").arg((shareName.isEmpty() ? tr("Untitled") : shareName).toHtmlEscaped()), this);
-    QFont titleFont = QtUtils::boldFont(titleLabel->font());
-    titleFont.setPointSize(titleFont.pointSize() + 2);
-    titleLabel->setFont(titleFont);
+    // Family comes from the InterfaceDefault theme role; the +2 size and bold stay caller-side.
+    auto applyTitleFont = [titleLabel]() {
+        QFont titleFont = QtUtils::boldFont(themeManager->appFont(AppFont::InterfaceDefault));
+        titleFont.setPointSize(titleFont.pointSize() + 2);
+        titleLabel->setFont(titleFont);
+    };
+    applyTitleFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, applyTitleFont);
     mainLayout->addWidget(titleLabel);
 
     if (!serverText.isEmpty()) {

cockatrice/src/interface/widgets/dialogs/settings_view.cpp

@@ -7,6 +7,7 @@
 
 #include "../../../client/settings/cache_settings.h"
 #include "../../pixel_map_generator.h"
+#include "../interface/theme_manager.h"
 #include "../settings_page/abstract_settings_page.h"
 #include "../settings_page/appearance_settings_page.h"
 #include "../settings_page/deck_editor_settings_page.h"
@@ -199,6 +200,10 @@ void SettingsView::setupUi()
         searchDelegate->setPageIcons(icons);
         searchResultsView->viewport()->update();
     });
+    // The search delegate reads the InterfaceDefault role at paint time, so a
+    // font change only needs a repaint, mirroring the theme change above.
+    connect(themeManager, &ThemeManager::fontsChanged, searchResultsView,
+            [this] { searchResultsView->viewport()->update(); });
 
     // Build search index after pages are created
     buildSearchIndex();

cockatrice/src/interface/widgets/general/display/banner_widget.cpp

@@ -1,9 +1,11 @@
 #include "banner_widget.h"
 
 #include "../../../pixel_map_generator.h"
+#include "../../../theme_manager.h"
 
 #include <QBrush>
 #include <QColor>
+#include <QFont>
 #include <QHBoxLayout>
 #include <QLinearGradient>
 #include <QPainter>
@@ -28,7 +30,9 @@ BannerWidget::BannerWidget(QWidget *parent, const QString &text, Qt::Orientation
     if (transparency > 50) {
         textColor = " color: white;";
     }
-    bannerLabel->setStyleSheet("font-size: 24px; font-weight: bold;" + textColor);
+    bannerLabel->setStyleSheet(textColor);
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &BannerWidget::applyInterfaceDefaultFont);
 
     layout->addWidget(iconLabel);
     layout->addWidget(bannerLabel);
@@ -56,6 +60,16 @@ void BannerWidget::setText(const QString &text) const
     bannerLabel->setText(text);
 }
 
+void BannerWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 24px size and
+    // bold weight previously carried by the stylesheet stay caller-side.
+    QFont bannerFont = themeManager->appFont(AppFont::InterfaceDefault);
+    bannerFont.setPixelSize(24);
+    bannerFont.setWeight(QFont::Bold);
+    bannerLabel->setFont(bannerFont);
+}
+
 void BannerWidget::setClickable(bool _clickable)
 {
     clickable = _clickable;

cockatrice/src/interface/widgets/general/display/banner_widget.h

@@ -48,6 +48,7 @@ signals:
 private slots:
     void toggleBuddyVisibility() const;
     void updateDropdownIconState() const;
+    void applyInterfaceDefaultFont();
 };
 
 #endif // BANNER_WIDGET_H

cockatrice/src/interface/widgets/general/display/charts/bars/bar_chart_widget.cpp

@@ -1,5 +1,7 @@
 #include "bar_chart_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QBrush>
 #include <QFlags>
 #include <QFont>
@@ -19,6 +21,10 @@
 BarChartWidget::BarChartWidget(QWidget *parent) : QWidget(parent)
 {
     setMouseTracking(true);
+
+    // Labels read the InterfaceDefault role at paint time, so a font change
+    // only needs a repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] { update(); });
 }
 
 void BarChartWidget::setBars(const QVector<BarData> &newBars)
@@ -146,7 +152,8 @@ void BarChartWidget::paintEvent(QPaintEvent *)
 
         // draw label below bar
         QRect labelRect(left + i * (barWidth + spacing), bottom, barWidth, LABEL_H);
-        QFont f = p.font();
+        // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+        QFont f = themeManager->appFont(AppFont::InterfaceDefault);
         f.setBold(true);
         p.setFont(f);
         p.setPen(Qt::black);

cockatrice/src/interface/widgets/general/display/charts/bars/segmented_bar_widget.cpp

@@ -1,5 +1,7 @@
 #include "segmented_bar_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QBrush>
 #include <QFont>
 #include <QLinearGradient>
@@ -22,6 +24,10 @@ SegmentedBarWidget::SegmentedBarWidget(QString label, QVector<Segment> segments,
     setMinimumWidth(36);
     setMaximumWidth(50);
     setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
+
+    // The label reads the InterfaceDefault role at paint time, so a font
+    // change only needs a repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] { update(); });
 }
 
 QSize SegmentedBarWidget::sizeHint() const
@@ -95,7 +101,8 @@ void SegmentedBarWidget::paintEvent(QPaintEvent *)
 
     // draw label
     QRect labelRect(0, h - LABEL_H, w, LABEL_H);
-    QFont f = p.font();
+    // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+    QFont f = themeManager->appFont(AppFont::InterfaceDefault);
     f.setBold(true);
     p.setFont(f);
     p.setPen(Qt::black);

cockatrice/src/interface/widgets/general/display/dynamic_font_size_label.cpp

@@ -1,5 +1,7 @@
 #include "dynamic_font_size_label.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QFont>
 #include <QFontMetricsF>
 #include <QObject>
@@ -28,9 +30,13 @@ void DynamicFontSizeLabel::paintEvent(QPaintEvent *event)
     // QElapsedTimer timer;
     // timer.start();
 
-    QFont newFont = font();
+    // Family follows the InterfaceDefault theme role; the fitted point size
+    // stays computed from the widget geometry as before.
+    QFont newFont = themeManager->appFont(AppFont::InterfaceDefault);
     float fontSize = getWidgetMaximumFontSize(this, this->text());
     newFont.setPointSizeF(fontSize);
+    // Preserve the caller's bold emphasis, which the role font does not carry.
+    newFont.setBold(font().bold());
     setFont(newFont);
     // qDebug() << "Font size set to" << fontSize;
 
@@ -40,7 +46,10 @@ void DynamicFontSizeLabel::paintEvent(QPaintEvent *event)
 
 float DynamicFontSizeLabel::getWidgetMaximumFontSize(QWidget *widget, const QString &text)
 {
-    QFont font = widget->font();
+    // Measure with the InterfaceDefault family so the fit matches the painted font.
+    QFont font = themeManager->appFont(AppFont::InterfaceDefault);
+    font.setBold(widget->font().bold());
+    font.setPointSizeF(widget->font().pointSizeF());
     const QRect widgetRect = widget->contentsRect();
     const float widgetWidth = widgetRect.width();
     const float widgetHeight = widgetRect.height();

cockatrice/src/interface/widgets/general/display/dynamic_font_size_push_button.cpp

@@ -1,5 +1,6 @@
 #include "dynamic_font_size_push_button.h"
 
+#include "../../interface/theme_manager.h"
 #include "dynamic_font_size_label.h"
 
 #include <QBrush>
@@ -20,10 +21,12 @@ void DynamicFontSizePushButton::paintEvent(QPaintEvent *event)
     // Call the base class paintEvent to preserve any other painting behavior
     QPushButton::paintEvent(event);
 
-    // Adjust the font size dynamically based on the text
-    QFont newFont = font();
+    // Adjust the font size dynamically based on the text. Family follows the
+    // InterfaceDefault theme role; the fitted size stays computed as before.
+    QFont newFont = themeManager->appFont(AppFont::InterfaceDefault);
     float fontSize = DynamicFontSizeLabel::getWidgetMaximumFontSize(this, this->text());
     newFont.setPointSizeF(fontSize);
+    newFont.setBold(font().bold());
     setFont(newFont);
 
     // Get painter for custom painting

cockatrice/src/interface/widgets/general/home_styled_button.cpp

@@ -1,6 +1,9 @@
 #include "home_styled_button.h"
 
+#include "../../theme_manager.h"
+
 #include <QBrush>
+#include <QFont>
 #include <QFontMetrics>
 #include <QPainter>
 #include <QPainterPath>
@@ -21,6 +24,18 @@ HomeStyledButton::HomeStyledButton(const QString &text, QPair<QColor, QColor> _g
     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     setMinimumHeight(25);
     setStyleSheet(generateButtonStylesheet(gradientColors));
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &HomeStyledButton::applyInterfaceDefaultFont);
+}
+
+void HomeStyledButton::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 34px size and
+    // bold weight previously carried by the stylesheet stay caller-side.
+    QFont buttonFont = themeManager->appFont(AppFont::InterfaceDefault);
+    buttonFont.setPixelSize(34);
+    buttonFont.setWeight(QFont::Bold);
+    setFont(buttonFont);
 }
 
 void HomeStyledButton::updateStylesheet(const QPair<QColor, QColor> &colors)
@@ -50,9 +65,6 @@ QString HomeStyledButton::generateButtonStylesheet(const QPair<QColor, QColor> &
 
     return QString(R"(
         QPushButton {
-            font-size: 34px;
-            font-weight: bold;
-            font-family: sans-serif, "Segoe UI", "Helvetica Neue";
             padding: 30px;
             color: white;
             border: 2px solid %1;

cockatrice/src/interface/widgets/general/home_styled_button.h

@@ -24,6 +24,9 @@ public:
 public slots:
     void paintEvent(QPaintEvent *event) override;
 
+private slots:
+    void applyInterfaceDefaultFont();
+
 private:
     QPair<QColor, QColor> gradientColors;
 };

cockatrice/src/interface/widgets/general/home_widget.cpp

@@ -289,7 +289,6 @@ QGroupBox *HomeWidget::createButtons()
     QGroupBox *box = new QGroupBox(this);
     box->setStyleSheet(R"(
     QGroupBox {
-        font-size: 20px;
         color: white;         /* Title text color */
         background: transparent;
     }
@@ -300,6 +299,14 @@ QGroupBox *HomeWidget::createButtons()
         subcontrol-position: top center;  /* or top left / right */
     }
 )");
+    // Family comes from the InterfaceDefault theme role; the 20px size stays caller-side.
+    auto applyBoxFont = [box]() {
+        QFont boxFont = themeManager->appFont(AppFont::InterfaceDefault);
+        boxFont.setPixelSize(20);
+        box->setFont(boxFont);
+    };
+    applyBoxFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, applyBoxFont);
     box->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     QVBoxLayout *boxLayout = new QVBoxLayout;
     boxLayout->setAlignment(Qt::AlignHCenter);
@@ -463,7 +470,9 @@ void HomeWidget::paintEvent(QPaintEvent *event)
     constexpr int margin = 15;
     constexpr qreal attributionMargin = 4.0;
 
-    QFont attributionFont = painter.font();
+    // Family comes from the InterfaceDefault theme role; the 14px sizes and
+    // bold weights stay caller-side as before.
+    QFont attributionFont = themeManager->appFont(AppFont::InterfaceDefault);
     attributionFont.setPointSize(14);
     attributionFont.setBold(true);
     painter.setFont(attributionFont);
@@ -476,7 +485,7 @@ void HomeWidget::paintEvent(QPaintEvent *event)
 
     // Card name bubble above the attribution (when enabled).
     if (!cardName.isEmpty() && SettingsCache::instance().appearance().getHomeTabDisplayCardName()) {
-        QFont font = painter.font();
+        QFont font = themeManager->appFont(AppFont::InterfaceDefault);
         font.setPointSize(14);
         font.setBold(true);
         painter.setFont(font);

cockatrice/src/interface/widgets/onboarding/first_run_wizard.cpp

@@ -1,5 +1,6 @@
 #include "first_run_wizard.h"
 
+#include "../interface/theme_manager.h"
 #include "first_run_wizard_page.h"
 #include "pages/account_setup_page.h"
 #include "pages/card_database_setup_page.h"
@@ -32,9 +33,8 @@ FirstRunWizard::FirstRunWizard(QWidget *parent) : QDialog(parent)
     bannerHost = new BannerHost(this);
 
     titleLabel = new QLabel(this);
-    QFont titleFont = QtUtils::boldFont(titleLabel->font());
-    titleFont.setPointSizeF(titleFont.pointSizeF() * 1.4);
-    titleLabel->setFont(titleFont);
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &FirstRunWizard::applyInterfaceDefaultFont);
 
     subtitleLabel = new QLabel(this);
     subtitleLabel->setWordWrap(true);
@@ -154,6 +154,16 @@ void FirstRunWizard::updateChrome()
     }
 }
 
+void FirstRunWizard::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the *1.4 size
+    // multiplier and bold weight stay caller-side as before.
+    QFont titleFont = themeManager->appFont(AppFont::InterfaceDefault);
+    titleFont.setPointSizeF(titleFont.pointSizeF() * 1.4);
+    titleFont.setBold(true);
+    titleLabel->setFont(titleFont);
+}
+
 void FirstRunWizard::goNext()
 {
     FirstRunWizardPage *page = pages[currentIndex];

cockatrice/src/interface/widgets/onboarding/first_run_wizard.h

@@ -55,6 +55,7 @@ private slots:
     void goBack();
     void skip();
     void updateChrome();
+    void applyInterfaceDefaultFont();
 
 private:
     void addPage(FirstRunWizardPage *page);

cockatrice/src/interface/widgets/printing_selector/all_zones_card_amount_widget.cpp

@@ -1,5 +1,6 @@
 #include "all_zones_card_amount_widget.h"
 
+#include "../../theme_manager.h"
 #include "../general/display/shadow_background_label.h"
 #include "card_amount_widget.h"
 #include "libcockatrice/card/card_info.h"
@@ -67,6 +68,7 @@ AllZonesCardAmountWidget::AllZonesCardAmountWidget(QWidget *parent,
     buttonBoxSideboard->setVisible(!isToken);
 
     connect(cardSizeSlider, &QSlider::valueChanged, this, &AllZonesCardAmountWidget::adjustFontSize);
+    connect(themeManager, &ThemeManager::fontsChanged, this, &AllZonesCardAmountWidget::applyCardTextFont);
 
     QTimer::singleShot(10, this, [this]() { adjustFontSize(this->cardSizeSlider->value()); });
 
@@ -90,8 +92,9 @@ void AllZonesCardAmountWidget::adjustFontSize(int scalePercentage)
     int newFontSize = minFontSize + (scalePercentage - basePercentage) * (maxFontSize - minFontSize) / 225;
     newFontSize = std::clamp(newFontSize, minFontSize, maxFontSize);
 
-    // Update the font labels
-    QFont zoneLabelFont = zoneLabelMainboard->font();
+    // Update the font labels. The family comes from the CardText theme
+    // role; the slider-driven point size stays as before.
+    QFont zoneLabelFont = themeManager->appFont(AppFont::CardText);
     zoneLabelFont.setPointSize(newFontSize);
     zoneLabelMainboard->setFont(zoneLabelFont);
     zoneLabelSideboard->setFont(zoneLabelFont);
@@ -101,6 +104,11 @@ void AllZonesCardAmountWidget::adjustFontSize(int scalePercentage)
     repaint();
 }
 
+void AllZonesCardAmountWidget::applyCardTextFont()
+{
+    adjustFontSize(cardSizeSlider->value());
+}
+
 void AllZonesCardAmountWidget::setAmounts(int mainboardAmount, int sideboardAmount, int tokensboardAmount)
 {
     buttonBoxMainboard->setAmount(mainboardAmount);

cockatrice/src/interface/widgets/printing_selector/all_zones_card_amount_widget.h

@@ -36,6 +36,9 @@ public slots:
     void adjustFontSize(int scalePercentage);
     void setAmounts(int mainboardAmount, int sideboardAmount, int tokensboardAmount);
 
+private slots:
+    void applyCardTextFont();
+
 private:
     QVBoxLayout *layout;
     QSlider *cardSizeSlider;

cockatrice/src/interface/widgets/printing_selector/card_amount_widget.cpp

@@ -1,5 +1,6 @@
 #include "card_amount_widget.h"
 
+#include "../../theme_manager.h"
 #include "../deck_editor/deck_state_manager.h"
 #include "../general/display/dynamic_font_size_push_button.h"
 #include "deck_list_model.h"
@@ -77,6 +78,7 @@ CardAmountWidget::CardAmountWidget(QWidget *parent,
 
     // Connect slider for dynamic font size adjustment
     connect(cardSizeSlider, &QSlider::valueChanged, this, &CardAmountWidget::adjustFontSize);
+    connect(themeManager, &ThemeManager::fontsChanged, this, &CardAmountWidget::applyCardTextFont);
 }
 
 int CardAmountWidget::getAmount()
@@ -138,8 +140,9 @@ void CardAmountWidget::adjustFontSize(int scalePercentage)
     int newFontSize = minFontSize + (scalePercentage - basePercentage) * (maxFontSize - minFontSize) / 225;
     newFontSize = std::clamp(newFontSize, minFontSize, maxFontSize);
 
-    // Update the font for card count label
-    QFont cardCountFont = cardCountInZone->font();
+    // Update the font for card count label. The family comes from the
+    // CardText theme role; the slider-driven point size stays as before.
+    QFont cardCountFont = themeManager->appFont(AppFont::CardText);
     cardCountFont.setPointSize(newFontSize);
     cardCountInZone->setFont(cardCountFont);
 
@@ -150,6 +153,11 @@ void CardAmountWidget::adjustFontSize(int scalePercentage)
     repaint();
 }
 
+void CardAmountWidget::applyCardTextFont()
+{
+    adjustFontSize(cardSizeSlider->value());
+}
+
 /**
  * @brief Updates the card count display in the widget.
  */

cockatrice/src/interface/widgets/printing_selector/card_amount_widget.h

@@ -67,6 +67,7 @@ private slots:
     void removePrintingSideboard();
     void removePrintingTokensboard();
     void adjustFontSize(int scalePercentage);
+    void applyCardTextFont();
 };
 
 #endif // CARD_AMOUNT_WIDGET_H

cockatrice/src/interface/widgets/printing_selector/printing_selector_placeholder_widget.cpp

@@ -1,5 +1,8 @@
 #include "printing_selector_placeholder_widget.h"
 
+#include "../interface/theme_manager.h"
+
+#include <QFont>
 #include <QLabel>
 #include <QSizePolicy>
 #include <QVBoxLayout>
@@ -30,10 +33,12 @@ PrintingSelectorPlaceholderWidget::PrintingSelectorPlaceholderWidget(QWidget *pa
     textLabel->setStyleSheet(R"(
         QLabel {
             color: palette(mid);
-            font-size: 14px;
             padding: 10px;
         }
     )");
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &PrintingSelectorPlaceholderWidget::applyInterfaceDefaultFont);
 
     mainLayout->addWidget(imageLabel);
     mainLayout->addWidget(textLabel);
@@ -44,4 +49,12 @@ PrintingSelectorPlaceholderWidget::PrintingSelectorPlaceholderWidget(QWidget *pa
 void PrintingSelectorPlaceholderWidget::retranslateUi()
 {
     textLabel->setText(tr("Select a card to view its available printings"));
+}
+
+void PrintingSelectorPlaceholderWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 14px size stays caller-side.
+    QFont placeholderFont = themeManager->appFont(AppFont::InterfaceDefault);
+    placeholderFont.setPixelSize(14);
+    textLabel->setFont(placeholderFont);
 }

cockatrice/src/interface/widgets/printing_selector/printing_selector_placeholder_widget.h

@@ -14,6 +14,9 @@ class PrintingSelectorPlaceholderWidget : public QWidget
 public:
     explicit PrintingSelectorPlaceholderWidget(QWidget *parent = nullptr);
 
+private slots:
+    void applyInterfaceDefaultFont();
+
 private:
     QVBoxLayout *mainLayout;
     QLabel *imageLabel;

cockatrice/src/interface/widgets/server/chat_view/chat_view.cpp

@@ -4,6 +4,7 @@
 #include "../../client/sound_engine.h"
 #include "../../interface/card_localization.h"
 #include "../../interface/pixel_map_generator.h"
+#include "../../interface/theme_manager.h"
 #include "../../tabs/tab_supervisor.h"
 #include "../user/user_context_menu.h"
 #include "../user/user_list_manager.h"
@@ -63,6 +64,9 @@ ChatView::ChatView(TabSupervisor *_tabSupervisor, AbstractGame *_game, bool _sho
 
     connect(&SettingsCache::instance(), &SettingsCache::themeChanged, this, &ChatView::adjustColorsToPalette);
 
+    applyChatFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &ChatView::applyChatFont);
+
     userContextMenu = new UserContextMenu(tabSupervisor, this, game);
     connect(userContextMenu, SIGNAL(openMessageDialog(QString, bool)), this, SIGNAL(openMessageDialog(QString, bool)));
 
@@ -108,6 +112,16 @@ void ChatView::adjustColorsToPalette()
     QTimer::singleShot(0, this, &ChatView::refreshBlockColors);
 }
 
+void ChatView::applyChatFont()
+{
+    // Family comes from the ChatLog theme role; the message char formats carry
+    // no family of their own, so they (and new content) follow the widget and
+    // document default fonts. Weights/italics stay caller-side as before.
+    const QFont chatFont = themeManager->appFont(AppFont::ChatLog);
+    setFont(chatFont);
+    document()->setDefaultFont(chatFont);
+}
+
 void ChatView::refreshBlockColors()
 {
     QTextDocument *doc = document();

cockatrice/src/interface/widgets/server/chat_view/chat_view.h

@@ -111,6 +111,7 @@ private slots:
     void openLink(const QUrl &link);
     void actMessageClicked();
     void adjustColorsToPalette();
+    void applyChatFont();
     void refreshBlockColors();
     void onScrollBarRangeChanged();
     void onScrollBarValueChanged(int value);

cockatrice/src/interface/widgets/server/user/user_info_box.cpp

@@ -1,6 +1,7 @@
 #include "user_info_box.h"
 
 #include "../../interface/pixel_map_generator.h"
+#include "../../interface/theme_manager.h"
 #include "../../interface/widgets/dialogs/dlg_edit_avatar.h"
 #include "../../interface/widgets/dialogs/dlg_edit_password.h"
 #include "../../interface/widgets/dialogs/dlg_edit_user.h"
@@ -39,10 +40,8 @@
 UserInfoBox::UserInfoBox(AbstractClient *_client, bool _editable, QWidget *parent, Qt::WindowFlags flags)
     : QWidget(parent, flags), client(_client), editable(_editable)
 {
-    QFont nameFont = nameLabel.font();
-    nameFont.setBold(true);
-    nameFont.setPointSizeF(nameFont.pointSizeF() * 1.5);
-    nameLabel.setFont(nameFont);
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &UserInfoBox::applyInterfaceDefaultFont);
 
     auto *userIconAndNameLayout = new QHBoxLayout;
     userIconAndNameLayout->addWidget(&userLevelIcon, 0, Qt::AlignCenter);
@@ -91,6 +90,16 @@ UserInfoBox::UserInfoBox(AbstractClient *_client, bool _editable, QWidget *paren
     retranslateUi();
 }
 
+void UserInfoBox::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the *1.5 size
+    // multiplier and bold weight stay caller-side as before.
+    QFont nameFont = themeManager->appFont(AppFont::InterfaceDefault);
+    nameFont.setBold(true);
+    nameFont.setPointSizeF(nameFont.pointSizeF() * 1.5);
+    nameLabel.setFont(nameFont);
+}
+
 void UserInfoBox::retranslateUi()
 {
     realNameLabel1.setText(tr("Real Name:"));

cockatrice/src/interface/widgets/server/user/user_info_box.h

@@ -48,6 +48,7 @@ private slots:
     void processEditResponse(const Response &r);
     void processPasswordResponse(const Response &r);
     void processAvatarResponse(const Response &r);
+    void applyInterfaceDefaultFont();
 
     void actEdit();
     void actEditInternal(const Response &r);

cockatrice/src/interface/widgets/server/user/user_info_popup.cpp

@@ -142,7 +142,8 @@ public:
         p->drawEllipse(QRectF(rect.left() + 9, rect.top() + (rect.height() - 8) / 2.0, 8, 8));
 
         // Game title (bold, elided)
-        QFont tf = option.font;
+        // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+        QFont tf = themeManager->appFont(AppFont::InterfaceDefault);
         tf.setBold(true);
         p->setFont(tf);
         p->setPen(pal.color(QPalette::Text));
@@ -154,7 +155,7 @@ public:
 
         // Player count
         const bool full = game.player_count() >= game.max_players();
-        p->setFont(option.font);
+        p->setFont(themeManager->appFont(AppFont::InterfaceDefault));
         p->setPen(full ? QColor(249, 115, 22) : pal.color(QPalette::Disabled, QPalette::Text));
         p->drawText(QRect(rect.right() - countW - 4, rect.top(), countW, rect.height()),
                     Qt::AlignVCenter | Qt::AlignRight,
@@ -323,7 +324,8 @@ void UserInfoHeaderWidget::paintEvent(QPaintEvent *)
     const int tx = ax + AvatarSize + AvatarToTextGap;
     const int tw = rect.width() - tx - 8;
 
-    QFont nf = font();
+    // Family comes from the InterfaceDefault theme role; the *1.12 size and bold stay caller-side.
+    QFont nf = themeManager->appFont(AppFont::InterfaceDefault);
     nf.setBold(true);
     nf.setPointSizeF(nf.pointSizeF() * 1.12);
     p.setFont(nf);
@@ -352,7 +354,7 @@ void UserInfoHeaderWidget::paintEvent(QPaintEvent *)
     }
 
     if (!badge.text.isEmpty()) {
-        QFont bf = font();
+        QFont bf = themeManager->appFont(AppFont::InterfaceDefault);
         bf.setPointSizeF(bf.pointSizeF() * 0.70);
         bf.setBold(true);
         p.setFont(bf);
@@ -369,7 +371,8 @@ void UserInfoHeaderWidget::paintEvent(QPaintEvent *)
 
     // The painter font at this point depends on whether a badge was drawn
     // (badge font vs username font), so pin an explicit font for the pill.
-    p.setFont(font());
+    // Family follows the InterfaceDefault theme role like the rest of the popup chrome.
+    p.setFont(themeManager->appFont(AppFont::InterfaceDefault));
 
     // Only show the attribution when there is actually art on screen: on a
     // cache miss cardArt is null and the pill would float over the plain
@@ -398,6 +401,7 @@ UserInfoPopup::UserInfoPopup(TabSupervisor *_ts,
     // Restyle the popup chrome when the theme or its color scheme changes.
     if (themeManager) {
         connect(themeManager, &ThemeManager::themeChanged, this, &UserInfoPopup::applyTheme);
+        connect(themeManager, &ThemeManager::fontsChanged, this, &UserInfoPopup::applyTheme);
     }
 }
 
@@ -475,15 +479,24 @@ void UserInfoPopup::applyTheme()
 
     separator->setStyleSheet(QStringLiteral("color:%1; margin: 0 8px;").arg(colorStr(theme.border)));
 
-    gamesLabel->setStyleSheet(QStringLiteral("color:%1; font-size:11px; font-weight:bold; background:transparent;")
-                                  .arg(colorStr(theme.subText)));
+    gamesLabel->setStyleSheet(QStringLiteral("color:%1; background:transparent;").arg(colorStr(theme.subText)));
+    QFont gamesLabelFont = themeManager->appFont(AppFont::InterfaceDefault);
+    gamesLabelFont.setPixelSize(11);
+    gamesLabelFont.setWeight(QFont::Bold);
+    gamesLabel->setFont(gamesLabelFont);
 
-    refreshBtn->setStyleSheet(QStringLiteral("QPushButton{color:%1;border:none;font-size:14px;background:transparent;}"
+    refreshBtn->setStyleSheet(QStringLiteral("QPushButton{color:%1;border:none;background:transparent;}"
                                              "QPushButton:hover{color:%2;}")
                                   .arg(colorStr(theme.subText), colorStr(theme.text)));
+    QFont refreshFont = themeManager->appFont(AppFont::InterfaceDefault);
+    refreshFont.setPixelSize(14);
+    refreshBtn->setFont(refreshFont);
 
-    gamesStatus->setStyleSheet(QStringLiteral("color:%1; font-size:11px; padding:10px; background:transparent;")
-                                   .arg(colorStr(theme.statusText)));
+    gamesStatus->setStyleSheet(
+        QStringLiteral("color:%1; padding:10px; background:transparent;").arg(colorStr(theme.statusText)));
+    QFont statusFont = themeManager->appFont(AppFont::InterfaceDefault);
+    statusFont.setPixelSize(11);
+    gamesStatus->setFont(statusFont);
 
     gamesView->setStyleSheet(QStringLiteral("QListView{background:%1;border:none;}"
                                             "QListView::item:selected{background:%2;}")
@@ -491,9 +504,12 @@ void UserInfoPopup::applyTheme()
 
     closeBtn->setStyleSheet(
         QStringLiteral("QPushButton{background:%1;color:%2;"
-                       "border:none;border-radius:11px;font-size:10px;}"
+                       "border:none;border-radius:11px;}"
                        "QPushButton:hover{color:%3;background:%4;}")
             .arg(colorStr(theme.closeBg), colorStr(theme.subText), colorStr(theme.text), colorStr(theme.closeHover)));
+    QFont closeFont = themeManager->appFont(AppFont::InterfaceDefault);
+    closeFont.setPixelSize(10);
+    closeBtn->setFont(closeFont);
 
     header->update();
 }
@@ -508,13 +524,17 @@ static QPushButton *makeBtn(const QString &label, const QString &tip, QWidget *p
     b->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     b->setStyleSheet(QStringLiteral("QPushButton{"
                                     "  background:%1;color:%2;border:1px solid %3;"
-                                    "  border-radius:4px;font-size:11px;padding:0 4px;"
+                                    "  border-radius:4px;padding:0 4px;"
                                     "}"
                                     "QPushButton:hover{background:%4;color:%5;}"
                                     "QPushButton:pressed{background:%6;}"
                                     "QPushButton:disabled{color:%7;border-color:%3;}")
                          .arg(colorStr(t.buttonBg), colorStr(t.text), colorStr(t.buttonBorder), colorStr(t.buttonHover),
                               colorStr(t.text), colorStr(t.buttonPressed), colorStr(t.buttonDisabled)));
+    // Family comes from the InterfaceDefault theme role; the 11px size stays caller-side.
+    QFont btnFont = themeManager->appFont(AppFont::InterfaceDefault);
+    btnFont.setPixelSize(11);
+    b->setFont(btnFont);
     return b;
 }
 

cockatrice/src/interface/widgets/server/user/user_list_painter.cpp

@@ -1,6 +1,7 @@
 #include "user_list_painter.h"
 
 #include "../../interface/pixel_map_generator.h"
+#include "../../interface/theme_manager.h"
 #include "libcockatrice/protocol/pb/serverinfo_user.pb.h"
 
 #include <QAbstractScrollArea>
@@ -292,7 +293,9 @@ void UserListPainter::drawUserName(QPainter *painter,
                                    bool online,
                                    const Style &style)
 {
-    QFont nameFont = option.font;
+    Q_UNUSED(option);
+    // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+    QFont nameFont = themeManager->appFont(AppFont::InterfaceDefault);
     nameFont.setBold(true);
     painter->setFont(nameFont);
 
@@ -351,7 +354,9 @@ void UserListPainter::drawBadges(QPainter *painter,
         return;
     }
 
-    QFont badgeFont = option.font;
+    Q_UNUSED(option);
+    // Family comes from the InterfaceDefault theme role; the *0.68 size and bold stay caller-side.
+    QFont badgeFont = themeManager->appFont(AppFont::InterfaceDefault);
     badgeFont.setPointSizeF(badgeFont.pointSizeF() * 0.68);
     badgeFont.setBold(true);
     painter->setFont(badgeFont);

cockatrice/src/interface/widgets/server/user/user_list_widget.cpp

@@ -519,6 +519,19 @@ UserListWidget::UserListWidget(TabSupervisor *_tabSupervisor,
             userTree->viewport()->update();
             userTree->update();
         });
+        // Divider headers store their font on the item, so re-apply the role
+        // family here; the painter reads the role live and needs only the
+        // repaint below.
+        connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+            QFont dividerFont = themeManager->appFont(AppFont::InterfaceDefault);
+            dividerFont.setBold(true);
+            for (auto it = sectionItems.constBegin(); it != sectionItems.constEnd(); ++it) {
+                it.value()->setFont(0, dividerFont);
+                it.value()->setSizeHint(0, QSize(0, QFontMetrics(dividerFont).height() + 16));
+            }
+            userTree->viewport()->update();
+            userTree->update();
+        });
     }
 
     QVBoxLayout *vbox = new QVBoxLayout;
@@ -1492,7 +1505,7 @@ QTreeWidgetItem *UserListWidget::createSectionItem(Section section)
     // They act as collapsible section headers once they have focus.
     divider->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
 
-    QFont font = userTree->font();
+    QFont font = themeManager->appFont(AppFont::InterfaceDefault);
     font.setBold(true);
     divider->setFont(0, font);
     // A little taller than a plain text row so the header reads as a section

cockatrice/src/interface/widgets/settings_page/appearance_settings_page.cpp

@@ -283,20 +283,11 @@ AppearanceSettingsPage::AppearanceSettingsPage()
     connect(&roundCardCornersCheckBox, &QAbstractButton::toggled, &settings.cardsDisplay(),
             &CardsDisplaySettings::setRoundCardCorners);
 
-    connect(&maxFontSizeForCardsEdit, qOverload<int>(&QSpinBox::valueChanged), &settings.appearance(),
-            &AppearanceSettings::setMaxFontSize);
-    maxFontSizeForCardsEdit.setValue(settings.appearance().getMaxFontSize());
-    maxFontSizeForCardsLabel.setBuddy(&maxFontSizeForCardsEdit);
-    maxFontSizeForCardsEdit.setMinimum(9);
-    maxFontSizeForCardsEdit.setMaximum(100);
-
     auto *cardsGrid = new QGridLayout;
     cardsGrid->addWidget(&displayCardNamesCheckBox, 0, 0, 1, 2);
     cardsGrid->addWidget(&autoRotateSidewaysLayoutCardsCheckBox, 1, 0, 1, 2);
     cardsGrid->addWidget(&cardScalingCheckBox, 2, 0, 1, 2);
     cardsGrid->addWidget(&roundCardCornersCheckBox, 3, 0, 1, 2);
-    cardsGrid->addWidget(&maxFontSizeForCardsLabel, 4, 0, 1, 1);
-    cardsGrid->addWidget(&maxFontSizeForCardsEdit, 4, 1, 1, 1);
 
     cardsGroupBox = new QGroupBox;
     cardsGroupBox->setLayout(cardsGrid);
@@ -657,7 +648,6 @@ void AppearanceSettingsPage::retranslateUi()
     autoRotateSidewaysLayoutCardsCheckBox.setText(tr("Auto-Rotate cards with sideways layout"));
     cardScalingCheckBox.setText(tr("Scale cards on mouse over"));
     roundCardCornersCheckBox.setText(tr("Use rounded card corners"));
-    maxFontSizeForCardsLabel.setText(tr("Maximum font size for information displayed on cards:"));
 
     cardLayoutGroupBox->setTitle(tr("Card layout"));
     verticalCardOverlapPercentLabel.setText(

cockatrice/src/interface/widgets/settings_page/appearance_settings_page.h

@@ -71,8 +71,6 @@ private:
     QCheckBox autoRotateSidewaysLayoutCardsCheckBox;
     QCheckBox cardScalingCheckBox;
     QCheckBox roundCardCornersCheckBox;
-    QLabel maxFontSizeForCardsLabel;
-    QSpinBox maxFontSizeForCardsEdit;
 
     QLabel verticalCardOverlapPercentLabel;
     QSpinBox verticalCardOverlapPercentBox;

cockatrice/src/interface/widgets/settings_page/settings_search_delegate.cpp

@@ -5,6 +5,7 @@
  */
 #include "settings_search_delegate.h"
 
+#include "../interface/theme_manager.h"
 #include "settings_search_model.h"
 
 #include <QBrush>
@@ -88,7 +89,8 @@ void SettingsSearchDelegate::paint(QPainter *painter,
     QRect textRect = contentRect.adjusted(iconOffset, 0, 0, 0);
 
     // Breadcrumb: "Page > Group"
-    QFont breadcrumbFont = option.font;
+    // Family comes from the InterfaceDefault theme role; the -1 size and bold stay caller-side.
+    QFont breadcrumbFont = themeManager->appFont(AppFont::InterfaceDefault);
     breadcrumbFont.setPointSize(breadcrumbFont.pointSize() - 1);
     breadcrumbFont.setBold(true);
 
@@ -113,7 +115,7 @@ void SettingsSearchDelegate::paint(QPainter *painter,
     yPos += 20;
 
     // Setting label
-    QFont labelFont = option.font;
+    QFont labelFont = themeManager->appFont(AppFont::InterfaceDefault);
     labelFont.setPointSize(labelFont.pointSize() + 1);
     labelFont.setBold(isSelected);
 

cockatrice/src/interface/widgets/tabs/api/archidekt/display/archidekt_deck_preview_image_display_widget.cpp

@@ -1,5 +1,6 @@
 #include "archidekt_deck_preview_image_display_widget.h"
 
+#include "../../../../../theme_manager.h"
 #include "../../../../general/display/shadow_background_label.h"
 
 #include <QFont>
@@ -17,13 +18,9 @@ ArchidektDeckPreviewImageDisplayWidget::ArchidektDeckPreviewImageDisplayWidget(Q
     bottomLeftLabel = new ShadowBackgroundLabel(this, "");
     bottomRightLabel = new ShadowBackgroundLabel(this, "");
 
-    QFont f;
-    f.setBold(true);
-    f.setPointSize(16);
-    topLeftLabel->setFont(f);
-    topRightLabel->setFont(f);
-    bottomLeftLabel->setFont(f);
-    bottomRightLabel->setFont(f);
+    applyCardTextFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &ArchidektDeckPreviewImageDisplayWidget::applyCardTextFont);
 
     // Raise so labels appear above image
     topLeftLabel->raise();
@@ -32,6 +29,18 @@ ArchidektDeckPreviewImageDisplayWidget::ArchidektDeckPreviewImageDisplayWidget(Q
     bottomRightLabel->raise();
 }
 
+void ArchidektDeckPreviewImageDisplayWidget::applyCardTextFont()
+{
+    // Family comes from the CardText theme role; size and weight stay caller-side as before.
+    QFont f = themeManager->appFont(AppFont::CardText);
+    f.setBold(true);
+    f.setPointSize(16);
+    topLeftLabel->setFont(f);
+    topRightLabel->setFont(f);
+    bottomLeftLabel->setFont(f);
+    bottomRightLabel->setFont(f);
+}
+
 void ArchidektDeckPreviewImageDisplayWidget::setAspectRatio(float ratio)
 {
     aspectRatio = ratio;

cockatrice/src/interface/widgets/tabs/api/archidekt/display/archidekt_deck_preview_image_display_widget.h

@@ -60,6 +60,9 @@ protected:
      */
     void resizeEvent(QResizeEvent *event) override;
 
+private slots:
+    void applyCardTextFont();
+
 private:
     float aspectRatio = 1.0f; ///< Aspect ratio to maintain for the preview image
 };

cockatrice/src/interface/widgets/tabs/api/edhrec/display/cards/edhrec_api_response_card_details_display_widget.cpp

@@ -1,5 +1,6 @@
 #include "edhrec_api_response_card_details_display_widget.h"
 
+#include "../../../../../../theme_manager.h"
 #include "../../../../../cards/card_info_picture_widget.h"
 #include "../../../../../cards/card_size_widget.h"
 #include "../../../../../general/display/background_plate_widget.h"
@@ -9,6 +10,7 @@
 #include "edhrec_api_response_card_synergy_display_widget.h"
 #include "libcockatrice/card/database/card_database_querier.h"
 
+#include <QFont>
 #include <QLabel>
 #include <QMouseEvent>
 #include <QObject>
@@ -32,7 +34,9 @@ EdhrecApiResponseCardDetailsDisplayWidget::EdhrecApiResponseCardDetailsDisplayWi
     nameLabel = new QLabel(this);
     nameLabel->setText(toDisplay.name);
     nameLabel->setAlignment(Qt::AlignHCenter);
-    nameLabel->setStyleSheet("font-size: 20px; font-weight: bold");
+    applyCardTextFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &EdhrecApiResponseCardDetailsDisplayWidget::applyCardTextFont);
 
     inclusionDisplayWidget = new EdhrecApiResponseCardInclusionDisplayWidget(this, toDisplay);
 
@@ -86,3 +90,14 @@ void EdhrecApiResponseCardDetailsDisplayWidget::actRequestPageNavigation()
 {
     emit requestUrl(toDisplay.url);
 }
+
+void EdhrecApiResponseCardDetailsDisplayWidget::applyCardTextFont()
+{
+    // Family comes from the CardText theme role; the 20px size and bold
+    // weight previously carried by the stylesheet stay caller-side. Pixel
+    // size, not point size: the stylesheet said 20px, and 20pt is ~27px.
+    QFont cardFont = themeManager->appFont(AppFont::CardText);
+    cardFont.setPixelSize(20);
+    cardFont.setWeight(QFont::Bold);
+    nameLabel->setFont(cardFont);
+}

cockatrice/src/interface/widgets/tabs/api/edhrec/display/cards/edhrec_api_response_card_details_display_widget.h

@@ -30,6 +30,9 @@ public slots:
 signals:
     void requestUrl(QString url);
 
+private slots:
+    void applyCardTextFont();
+
 private:
     EdhrecApiResponseCardDetails toDisplay;
     QVBoxLayout *layout;

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_api_response_commander_details_display_widget.cpp

@@ -1,5 +1,6 @@
 #include "edhrec_api_response_commander_details_display_widget.h"
 
+#include "../../../../../../theme_manager.h"
 #include "../../../../../cards/card_info_picture_widget.h"
 #include "../../../../../cards/card_size_widget.h"
 #include "../../api_response/cards/edhrec_commander_api_response_commander_details.h"
@@ -8,6 +9,7 @@
 #include "edhrec_commander_api_response_navigation_widget.h"
 #include "libcockatrice/card/database/card_database_querier.h"
 
+#include <QFont>
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QObject>
@@ -48,15 +50,16 @@ EdhrecCommanderResponseCommanderDetailsDisplayWidget::EdhrecCommanderResponseCom
     commanderName = new QLabel(this);
     commanderName->setText(commanderDetails.getName());
     commanderName->setAlignment(Qt::AlignCenter);
-    commanderName->setStyleSheet("font-size: 28px; font-weight: bold");
 
     label = new QLabel(this);
     label->setAlignment(Qt::AlignCenter);
-    label->setStyleSheet("font-size: 16px");
 
     salt = new QLabel(this);
     salt->setAlignment(Qt::AlignCenter);
-    salt->setStyleSheet("font-size: 16px");
+
+    applyCardTextFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &EdhrecCommanderResponseCommanderDetailsDisplayWidget::applyCardTextFont);
 
     cardPricesDisplayWidget = new EdhrecApiResponseCardPricesDisplayWidget(this, commanderDetails.getPrices());
 
@@ -83,3 +86,19 @@ void EdhrecCommanderResponseCommanderDetailsDisplayWidget::retranslateUi()
     label->setText(commanderDetails.getLabel());
     salt->setText(tr("Salt: ") + QString::number(commanderDetails.getSalt()));
 }
+
+void EdhrecCommanderResponseCommanderDetailsDisplayWidget::applyCardTextFont()
+{
+    // Family comes from the CardText theme role; the sizes and the bold
+    // weight previously carried by the stylesheets stay caller-side. Pixel
+    // sizes, not point sizes: the stylesheets said 28px and 16px.
+    QFont nameFont = themeManager->appFont(AppFont::CardText);
+    nameFont.setPixelSize(28);
+    nameFont.setWeight(QFont::Bold);
+    commanderName->setFont(nameFont);
+
+    QFont detailsFont = themeManager->appFont(AppFont::CardText);
+    detailsFont.setPixelSize(16);
+    label->setFont(detailsFont);
+    salt->setFont(detailsFont);
+}

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_api_response_commander_details_display_widget.h

@@ -30,6 +30,9 @@ public:
         QString baseUrl);
     void retranslateUi();
 
+private slots:
+    void applyCardTextFont();
+
 private:
     EdhrecCommanderApiResponseCommanderDetails commanderDetails;
     QHBoxLayout *layout;

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_bracket_navigation_widget.cpp

@@ -1,6 +1,9 @@
 #include "edhrec_commander_api_response_bracket_navigation_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QChar>
+#include <QFont>
 #include <QGridLayout>
 #include <QLabel>
 #include <QPushButton>
@@ -25,7 +28,7 @@ EdhrecCommanderApiResponseBracketNavigationWidget::EdhrecCommanderApiResponseBra
         QString label = option.isEmpty() ? "All" : option.at(0).toUpper() + option.mid(1);
         QPushButton *optionButton = new QPushButton(label, this);
         optionButton->setMinimumHeight(84);
-        optionButton->setStyleSheet("font-size: 24px");
+        optionButton->setStyleSheet(QString());
         gameChangerButtons[option] = optionButton;
         layout->addWidget(optionButton, 2, i);
         connect(optionButton, &QPushButton::clicked, this, [=, this]() {
@@ -35,6 +38,10 @@ EdhrecCommanderApiResponseBracketNavigationWidget::EdhrecCommanderApiResponseBra
         });
     }
 
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &EdhrecCommanderApiResponseBracketNavigationWidget::applyInterfaceDefaultFont);
+
     updateOptionButtonSelection(gameChangerButtons, "");
 
     retranslateUi();
@@ -94,8 +101,18 @@ void EdhrecCommanderApiResponseBracketNavigationWidget::updateOptionButtonSelect
     const QString &selectedKey)
 {
     for (auto it = buttons.begin(); it != buttons.end(); ++it) {
-        it.value()->setStyleSheet(it.key() == selectedKey
-                                      ? "background-color: lightblue; font-weight: bold; font-size: 24px;"
-                                      : "font-size: 24px");
+        const bool selected = (it.key() == selectedKey);
+        it.value()->setStyleSheet(selected ? QStringLiteral("background-color: lightblue;") : QString());
+        QFont buttonFont = themeManager->appFont(AppFont::InterfaceDefault);
+        buttonFont.setPixelSize(24);
+        buttonFont.setWeight(selected ? QFont::Bold : QFont::Normal);
+        it.value()->setFont(buttonFont);
     }
+}
+
+void EdhrecCommanderApiResponseBracketNavigationWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 24px size stays
+    // caller-side and the selected button keeps its bold emphasis.
+    updateOptionButtonSelection(gameChangerButtons, selectedGameChanger);
 }

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_bracket_navigation_widget.h

@@ -37,6 +37,9 @@ private:
     QMap<QString, QPushButton *> gameChangerButtons;
 
     void updateOptionButtonSelection(QMap<QString, QPushButton *> &buttons, const QString &selectedKey);
+
+private slots:
+    void applyInterfaceDefaultFont();
 };
 
 #endif // COCKATRICE_EDHREC_COMMANDER_API_RESPONSE_BRACKET_NAVIGATION_WIDGET_H

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_budget_navigation_widget.cpp

@@ -1,6 +1,9 @@
 #include "edhrec_commander_api_response_budget_navigation_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QChar>
+#include <QFont>
 #include <QGridLayout>
 #include <QLabel>
 #include <QPushButton>
@@ -25,7 +28,7 @@ EdhrecCommanderApiResponseBudgetNavigationWidget::EdhrecCommanderApiResponseBudg
         QString label = option.isEmpty() ? "Any" : option.at(0).toUpper() + option.mid(1);
         QPushButton *btn = new QPushButton(label, this);
         btn->setMinimumHeight(84);
-        btn->setStyleSheet("font-size: 24px");
+        btn->setStyleSheet(QString());
         budgetButtons[option] = btn;
         layout->addWidget(btn, 4, i);
         connect(btn, &QPushButton::clicked, this, [=, this]() {
@@ -35,6 +38,10 @@ EdhrecCommanderApiResponseBudgetNavigationWidget::EdhrecCommanderApiResponseBudg
         });
     }
 
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &EdhrecCommanderApiResponseBudgetNavigationWidget::applyInterfaceDefaultFont);
+
     updateOptionButtonSelection(budgetButtons, "");
 
     retranslateUi();
@@ -96,8 +103,18 @@ void EdhrecCommanderApiResponseBudgetNavigationWidget::updateOptionButtonSelecti
     const QString &selectedKey)
 {
     for (auto it = buttons.begin(); it != buttons.end(); ++it) {
-        it.value()->setStyleSheet(it.key() == selectedKey
-                                      ? "background-color: lightblue; font-weight: bold; font-size: 24px;"
-                                      : "font-size: 24px");
+        const bool selected = (it.key() == selectedKey);
+        it.value()->setStyleSheet(selected ? QStringLiteral("background-color: lightblue;") : QString());
+        QFont buttonFont = themeManager->appFont(AppFont::InterfaceDefault);
+        buttonFont.setPixelSize(24);
+        buttonFont.setWeight(selected ? QFont::Bold : QFont::Normal);
+        it.value()->setFont(buttonFont);
     }
+}
+
+void EdhrecCommanderApiResponseBudgetNavigationWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 24px size stays
+    // caller-side and the selected button keeps its bold emphasis.
+    updateOptionButtonSelection(budgetButtons, selectedBudget);
 }

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_budget_navigation_widget.h

@@ -37,6 +37,9 @@ private:
     QMap<QString, QPushButton *> budgetButtons;
 
     void updateOptionButtonSelection(QMap<QString, QPushButton *> &buttons, const QString &selectedKey);
+
+private slots:
+    void applyInterfaceDefaultFont();
 };
 
 #endif // COCKATRICE_EDHREC_COMMANDER_API_RESPONSE_BUDGET_NAVIGATION_WIDGET_H

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_navigation_widget.cpp

@@ -1,9 +1,11 @@
 #include "edhrec_commander_api_response_navigation_widget.h"
 
+#include "../../interface/theme_manager.h"
 #include "../../tab_edhrec_main.h"
 #include "edhrec_commander_api_response_bracket_navigation_widget.h"
 #include "edhrec_commander_api_response_budget_navigation_widget.h"
 
+#include <QFont>
 #include <QGridLayout>
 #include <QObject>
 #include <QPushButton>
@@ -30,10 +32,14 @@ EdhrecCommanderApiResponseNavigationWidget::EdhrecCommanderApiResponseNavigation
 
     comboPushButton = new QPushButton(this);
     comboPushButton->setMinimumHeight(84);
-    comboPushButton->setStyleSheet("font-size: 24px");
+    comboPushButton->setStyleSheet(QString());
     averageDeckPushButton = new QPushButton(this);
     averageDeckPushButton->setMinimumHeight(84);
-    averageDeckPushButton->setStyleSheet("font-size: 24px");
+    averageDeckPushButton->setStyleSheet(QString());
+
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &EdhrecCommanderApiResponseNavigationWidget::applyInterfaceDefaultFont);
 
     layout->addWidget(comboPushButton, 0, 0, 1, 1);
     layout->addWidget(averageDeckPushButton, 0, 1, 1, 1);
@@ -61,6 +67,15 @@ void EdhrecCommanderApiResponseNavigationWidget::retranslateUi()
     averageDeckPushButton->setText(tr("Average Deck"));
 }
 
+void EdhrecCommanderApiResponseNavigationWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 24px size stays caller-side.
+    QFont navFont = themeManager->appFont(AppFont::InterfaceDefault);
+    navFont.setPixelSize(24);
+    comboPushButton->setFont(navFont);
+    averageDeckPushButton->setFont(navFont);
+}
+
 QString EdhrecCommanderApiResponseNavigationWidget::addNavigationOptionsToUrl(QString baseUrl)
 {
     if (!bracketNavigationWidget->getSelectedGameChanger().isEmpty()) {

cockatrice/src/interface/widgets/tabs/api/edhrec/display/commander/edhrec_commander_api_response_navigation_widget.h

@@ -35,6 +35,9 @@ public slots:
 signals:
     void requestUrl(QString url);
 
+private slots:
+    void applyInterfaceDefaultFont();
+
 private:
     QGridLayout *layout;
 

cockatrice/src/interface/widgets/tabs/tab_developer.cpp

@@ -6,6 +6,7 @@
 
 #include "tab_developer.h"
 
+#include "../interface/theme_manager.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 
 #include <QAbstractItemView>
@@ -100,6 +101,20 @@ TabDeveloper::TabDeveloper(TabSupervisor *_tabSupervisor, AbstractClient *_clien
     central->setLayout(mainLayout);
     setCentralWidget(central);
 
+    // Separator rows store their font on the item; re-apply the role family on
+    // font changes (value cells keep the default font and need only a repaint).
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] {
+        QFont separatorFont = themeManager->appFont(AppFont::InterfaceDefault);
+        separatorFont.setBold(true);
+        for (int row = 0; row < statsTable->rowCount(); ++row) {
+            auto *labelItem = statsTable->item(row, 0);
+            if (labelItem && !(labelItem->flags() & Qt::ItemIsSelectable)) {
+                labelItem->setFont(separatorFont);
+            }
+        }
+        statsTable->viewport()->update();
+    });
+
     retranslateUi();
 }
 
@@ -155,7 +170,8 @@ void TabDeveloper::appendSeparatorRow(const QString &sectionTitle)
     const int row = statsTable->rowCount();
     statsTable->insertRow(row);
     auto *labelItem = new QTableWidgetItem(sectionTitle);
-    auto font = labelItem->font();
+    // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+    QFont font = themeManager->appFont(AppFont::InterfaceDefault);
     font.setBold(true);
     labelItem->setFont(font);
     labelItem->setFlags(labelItem->flags() & ~Qt::ItemIsSelectable);

cockatrice/src/interface/widgets/tabs/tab_public_decks.cpp

@@ -4,6 +4,7 @@
 #include "../../deck_loader/deck_loader.h"
 #include "../cards/card_size_widget.h"
 #include "../general/layout_containers/flow_widget.h"
+#include "../interface/theme_manager.h"
 #include "../visual_deck_storage/deck_preview/deck_preview_color_identity_filter_widget.h"
 #include "../visual_deck_storage/deck_preview/public_deck_preview_widget.h"
 #include "../visual_deck_storage/remote_public_decks_model.h"
@@ -45,7 +46,17 @@ TabPublicDecks::TabPublicDecks(TabSupervisor *_tabSupervisor, AbstractClient *_c
     cardSize = SettingsCache::instance().cardsDisplay().getVisualDeckStorageCardSize();
 
     titleLabel = new QLabel(tr("Public decks of %1").arg(userName.toHtmlEscaped()), this);
-    titleLabel->setFont(QtUtils::boldFont(titleLabel->font()));
+    // Family comes from the InterfaceDefault theme role; bold stays caller-side.
+    auto applyTitleFont = [this]() {
+        titleLabel->setFont(QtUtils::boldFont(themeManager->appFont(AppFont::InterfaceDefault)));
+    };
+    applyTitleFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this, applyTitleFont] {
+        applyTitleFont();
+        // Preview cells paint with the live role font; repaint the grid so the
+        // new family shows without waiting for a scroll or hover.
+        flowWidget->update();
+    });
 
     auto *headerLayout = new QHBoxLayout;
     headerLayout->addWidget(titleLabel);

cockatrice/src/interface/widgets/tabs/tab_report.cpp

@@ -1,5 +1,6 @@
 #include "tab_report.h"
 
+#include "../interface/theme_manager.h"
 #include "../server/user/user_context_menu.h"
 #include "../utility/report_utils.h"
 #include "abstract_client.h"
@@ -12,6 +13,7 @@
 #include <QComboBox>
 #include <QDateTime>
 #include <QDebug>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QHBoxLayout>
@@ -137,7 +139,8 @@ TabReport::TabReport(TabSupervisor *_tabSupervisor, AbstractClient *_client) : T
     chatGroup = new QGroupBox;
     chatLogEdit = new QTextEdit;
     chatLogEdit->setReadOnly(true);
-    chatLogEdit->setFont(QtUtils::monospaceFont());
+    applyChatLogFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &TabReport::applyChatLogFont);
     auto *chatLayout = new QVBoxLayout(chatGroup);
     chatLayout->setContentsMargins(4, 4, 4, 4);
     chatLayout->addWidget(chatLogEdit);
@@ -269,6 +272,11 @@ TabReport::TabReport(TabSupervisor *_tabSupervisor, AbstractClient *_client) : T
     refreshList();
 }
 
+void TabReport::applyChatLogFont()
+{
+    chatLogEdit->setFont(report_utils::reportLogFont());
+}
+
 void TabReport::retranslateUi()
 {
     userContextMenu->retranslateUi();

cockatrice/src/interface/widgets/tabs/tab_report.h

@@ -62,6 +62,7 @@ private slots:
     void statsResponse(const Response &response);
     void reopenReport();
     void reopenResponse(const Response &response);
+    void applyChatLogFont();
 
 private:
     int selectedReportId() const;

cockatrice/src/interface/widgets/utility/card_completer_delegate.cpp

@@ -1,5 +1,6 @@
 #include "card_completer_delegate.h"
 
+#include "../../interface/theme_manager.h"
 #include "../../pixel_map_generator.h"
 #include "../cards/additional_info/mana_cost_widget.h"
 #include "libcockatrice/card/database/card_database_querier.h"
@@ -182,7 +183,7 @@ void CardCompleterDelegate::drawManaSymbol(QPainter *p, QPoint centre, const QSt
     p->setBrush(Qt::NoBrush);
     p->drawEllipse(pip.adjusted(1, 1, -1, -1));
 
-    QFont f = QtUtils::boldFont(p->font());
+    QFont f = QtUtils::boldFont(themeManager->appFont(AppFont::CardText));
     f.setPixelSize(qMax(radius - 1, 7));
 
     p->setFont(f);
@@ -429,7 +430,7 @@ void CardCompleterDelegate::paint(QPainter *painter, const QStyleOptionViewItem
         const QRect nameRect = showInfoBand ? QRect(textLeft, rect.top() + 2, textWidth, 20)
                                             : QRect(textLeft, rect.top() + 2, textWidth, rect.height() - 4);
 
-        QFont f = option.font;
+        QFont f = themeManager->appFont(AppFont::CardText);
         f.setPixelSize(13);
         f.setBold(true);
 
@@ -451,7 +452,7 @@ void CardCompleterDelegate::paint(QPainter *painter, const QStyleOptionViewItem
     if (showInfoBand) {
         const QRect infoRect(textLeft, rect.top() + 22, textWidth, rect.height() - 24);
 
-        QFont f = option.font;
+        QFont f = themeManager->appFont(AppFont::CardText);
         f.setPixelSize(10);
 
         painter->setFont(f);

cockatrice/src/interface/widgets/utility/card_completer_styler.cpp

@@ -1,5 +1,6 @@
 #include "card_completer_styler.h"
 
+#include "../../interface/theme_manager.h"
 #include "../cards/card_info_picture_enlarged_widget.h"
 #include "card_completer_delegate.h"
 #include "libcockatrice/card/database/card_database_querier.h"
@@ -73,6 +74,10 @@ CardCompleterStyler::CardCompleterStyler(QCompleter *completer, QObject *parent)
 
     popup->viewport()->setMouseTracking(true);
 
+    // The delegate reads the CardText role at paint time, so a font change
+    // only needs a repaint of the popup.
+    connect(themeManager, &ThemeManager::fontsChanged, popup, [popup] { popup->viewport()->update(); });
+
     popup->installEventFilter(this);
     popup->viewport()->installEventFilter(this);
 

cockatrice/src/interface/widgets/utility/report_utils.cpp

@@ -1,5 +1,6 @@
 #include "report_utils.h"
 
+#include "../../theme_manager.h"
 #include "libcockatrice/protocol/pb/serverinfo_report.pb.h"
 
 #include <QApplication>
@@ -7,6 +8,7 @@
 #include <QChar>
 #include <QColor>
 #include <QDateTime>
+#include <QFontDatabase>
 #include <QPalette>
 #include <QSharedPointer>
 #include <QTableWidget>
@@ -19,6 +21,20 @@
 namespace report_utils
 {
 
+QFont reportLogFont()
+{
+    if (themeManager->hasAppFont(AppFont::ChatLog)) {
+        return themeManager->appFont(AppFont::ChatLog);
+    }
+    QFont monoFont(QStringLiteral("monospace"));
+    monoFont.setStyleHint(QFont::Monospace);
+    const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
+    if (systemPointSize > 0) {
+        monoFont.setPointSize(systemPointSize);
+    }
+    return monoFont;
+}
+
 namespace
 {
 QColor reportStatusColor(const QString &status)

cockatrice/src/interface/widgets/utility/report_utils.h

@@ -1,6 +1,7 @@
 #ifndef REPORT_UTILS_H
 #define REPORT_UTILS_H
 
+#include <QFont>
 #include <QString>
 #include <QtGlobal>
 
@@ -11,6 +12,12 @@ class ServerInfo_Report;
 namespace report_utils
 {
 
+/** @brief Font for the report chat-log views: the theme's ChatLog role when it
+ *         sets one, otherwise the monospace font these views used before the
+ *         role existed. Shared by the three report surfaces so they cannot
+ *         drift apart. */
+QFont reportLogFont();
+
 QString formatReportCategory(const QString &category);
 QString formatReportTime(qint64 secondsSinceEpoch);
 

cockatrice/src/interface/widgets/visual_deck_editor/visual_deck_editor_placeholder_widget.cpp

@@ -1,5 +1,8 @@
 #include "visual_deck_editor_placeholder_widget.h"
 
+#include "../interface/theme_manager.h"
+
+#include <QFont>
 #include <QLabel>
 #include <QVBoxLayout>
 #include <qnamespace.h>
@@ -28,10 +31,12 @@ VisualDeckEditorPlaceholderWidget::VisualDeckEditorPlaceholderWidget(QWidget *pa
     textLabel->setStyleSheet(R"(
         QLabel {
             color: palette(mid);
-            font-size: 14px;
             padding: 10px;
         }
     )");
+    applyInterfaceDefaultFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this,
+            &VisualDeckEditorPlaceholderWidget::applyInterfaceDefaultFont);
 
     mainLayout->addWidget(imageLabel);
     mainLayout->addWidget(textLabel);
@@ -42,4 +47,12 @@ VisualDeckEditorPlaceholderWidget::VisualDeckEditorPlaceholderWidget(QWidget *pa
 void VisualDeckEditorPlaceholderWidget::retranslateUi()
 {
     textLabel->setText(tr("Add cards using the search bar or database tab to have them appear here"));
+}
+
+void VisualDeckEditorPlaceholderWidget::applyInterfaceDefaultFont()
+{
+    // Family comes from the InterfaceDefault theme role; the 14px size stays caller-side.
+    QFont placeholderFont = themeManager->appFont(AppFont::InterfaceDefault);
+    placeholderFont.setPixelSize(14);
+    textLabel->setFont(placeholderFont);
 }

cockatrice/src/interface/widgets/visual_deck_editor/visual_deck_editor_placeholder_widget.h

@@ -15,6 +15,9 @@ public:
     explicit VisualDeckEditorPlaceholderWidget(QWidget *parent = nullptr);
     void retranslateUi();
 
+private slots:
+    void applyInterfaceDefaultFont();
+
 private:
     QVBoxLayout *mainLayout;
     QLabel *imageLabel;

cockatrice/src/interface/widgets/visual_deck_storage/deck_preview/deck_preview_tag_addition_widget.cpp

@@ -1,5 +1,7 @@
 #include "deck_preview_tag_addition_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QBrush>
 #include <QColor>
 #include <QFlags>
@@ -26,6 +28,10 @@ DeckPreviewTagAdditionWidget::DeckPreviewTagAdditionWidget(QWidget *_parent, QSt
 
     // Adjust widget size
     setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+
+    // The tag text reads the InterfaceDefault role at paint time, so a font
+    // change only needs a repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] { update(); });
 }
 
 QSize DeckPreviewTagAdditionWidget::sizeHint() const
@@ -65,8 +71,9 @@ void DeckPreviewTagAdditionWidget::paintEvent(QPaintEvent *event)
     painter.setPen(borderPen);
     painter.drawRect(rect().adjusted(0, 0, -1, -1)); // Adjust for pen width
 
-    // Calculate font size based on widget height
-    QFont font = painter.font();
+    // Calculate font size based on widget height. Family comes from the
+    // InterfaceDefault theme role; the height-derived size stays as before.
+    QFont font = themeManager->appFont(AppFont::InterfaceDefault);
     int fontSize = std::max(10, height() / 2); // Ensure a minimum font size of 10
     font.setPointSize(fontSize);
     painter.setFont(font);

cockatrice/src/interface/widgets/visual_deck_storage/deck_preview/deck_preview_tag_display_widget.cpp

@@ -1,5 +1,7 @@
 #include "deck_preview_tag_display_widget.h"
 
+#include "../../interface/theme_manager.h"
+
 #include <QBrush>
 #include <QColor>
 #include <QFlags>
@@ -41,6 +43,10 @@ DeckPreviewTagDisplayWidget::DeckPreviewTagDisplayWidget(QWidget *parent, const
     // Adjust widget size
     setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 
+    // The tag text reads the InterfaceDefault role at paint time, so a font
+    // change only needs a repaint.
+    connect(themeManager, &ThemeManager::fontsChanged, this, [this] { update(); });
+
     // Connect close button to the remove signal
     // connect(closeButton, &QPushButton::clicked, this, &DeckPreviewTagDisplayWidget::tagClosed);
 }
@@ -117,8 +123,9 @@ void DeckPreviewTagDisplayWidget::paintEvent(QPaintEvent *event)
     painter.setPen(borderPen);
     painter.drawRect(rect().adjusted(0, 0, -1, -1));
 
-    // Calculate font size based on widget height
-    QFont font = painter.font();
+    // Calculate font size based on widget height. Family comes from the
+    // InterfaceDefault theme role; the height-derived size stays as before.
+    QFont font = themeManager->appFont(AppFont::InterfaceDefault);
     int fontSize = std::max(10, height() / 2); // Ensure a minimum font size of 10
     font.setPointSize(fontSize);
     painter.setFont(font);

libcockatrice_settings/libcockatrice/settings/appearance_settings.cpp

@@ -33,16 +33,6 @@ void AppearanceSettings::setStyleUserList(bool _styleUserList)
     emit styleUserListChanged();
 }
 
-int AppearanceSettings::getMaxFontSize() const
-{
-    return getValue("maxFontSize", QString(), QString(), 12).toInt();
-}
-
-void AppearanceSettings::setMaxFontSize(int _max)
-{
-    setValue(_max, "maxFontSize");
-}
-
 QString AppearanceSettings::getHomeTabBackgroundSource() const
 {
     return getValue("homeTabBackgroundSource", QString(), QString(), "themed").toString();

libcockatrice_settings/libcockatrice/settings/appearance_settings.h

@@ -24,8 +24,6 @@ public:
     void setThemeName(const QString &_themeName);
     [[nodiscard]] bool getStyleUserList() const;
     void setStyleUserList(bool _styleUserList);
-    [[nodiscard]] int getMaxFontSize() const;
-    void setMaxFontSize(int _max);
     [[nodiscard]] QString getHomeTabBackgroundSource() const;
     void setHomeTabBackgroundSource(const QString &_backgroundSource);
     [[nodiscard]] int getHomeTabBackgroundShuffleFrequency() const;

libcockatrice_settings/libcockatrice/settings/settings_migration.cpp

@@ -17,6 +17,7 @@
 #include <QSharedPointer>
 #include <QStringList>
 #include <QStringLiteral>
+#include <QTextStream>
 #include <QVariant>
 #include <algorithm>
 #include <utility>
@@ -395,6 +396,10 @@ static void migrateAppearanceSettings(const QString &settingsPath, QSettings &gl
 {
     const QMap<QString, QString> appearanceKeyMap = {
         {"theme/name", "appearance/themeName"},
+        // Retired into the theme's CardText size, but still read here so users
+        // who have not migrated past global.ini keep their card text size:
+        // SettingsCache runs migrateSettingsFromGlobalIni() before
+        // migrateAppearanceMaxFontSizeToTheme().
         {"game/maxfontsize", "appearance/maxFontSize"},
         {"home/background", "appearance/homeTabBackgroundSource"},
         {"home/background/shuffleTimer", "appearance/homeTabBackgroundShuffleFrequency"},
@@ -424,6 +429,181 @@ static void migrateAppearanceSettings(const QString &settingsPath, QSettings &gl
     }
 }
 
+static QString themesPathForSettings(const QString &settingsPath)
+{
+    QSettings pathsIni(settingsPath + "paths.ini", QSettings::IniFormat);
+    const QString configured = pathsIni.value("paths/themes").toString().trimmed();
+    if (!configured.isEmpty()) {
+        return configured;
+    }
+    // Default layout: <data>/themes/ sibling of <data>/settings/.
+    return QDir::cleanPath(QDir(settingsPath).absoluteFilePath("../themes"));
+}
+
+static bool fontsTomlHasExplicitCardTextMax(const QString &filePath)
+{
+    QFile f(filePath);
+    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        return false;
+    }
+
+    QString currentSection;
+    QTextStream in(&f);
+    while (!in.atEnd()) {
+        QString line = in.readLine().trimmed();
+        if (line.isEmpty() || line.startsWith('#') || line.startsWith(';')) {
+            continue;
+        }
+        if (line.startsWith('[') && line.endsWith(']')) {
+            currentSection = line.mid(1, line.length() - 2).trimmed();
+            continue;
+        }
+        if (currentSection.compare("Fonts", Qt::CaseInsensitive) != 0) {
+            continue;
+        }
+        int eq = line.indexOf('=');
+        if (eq < 0) {
+            continue;
+        }
+        QString key = line.left(eq).trimmed();
+        QString value = line.mid(eq + 1).trimmed();
+        for (int i = 1; i < value.size(); ++i) {
+            if ((value[i] == '#' || value[i] == ';') && value[i - 1].isSpace()) {
+                value = value.left(i).trimmed();
+                break;
+            }
+        }
+        if (value.size() >= 2 &&
+            ((value.startsWith('"') && value.endsWith('"')) || (value.startsWith('\'') && value.endsWith('\'')))) {
+            value = value.mid(1, value.size() - 2).trimmed();
+        }
+        if (key.startsWith("AppFont::")) {
+            key = key.mid(QStringLiteral("AppFont::").size());
+        }
+        if (key.compare("CardTextMaxSize", Qt::CaseInsensitive) == 0) {
+            return true;
+        }
+        if (key.compare("CardText", Qt::CaseInsensitive) != 0) {
+            continue;
+        }
+        int comma = value.lastIndexOf(',');
+        if (comma < 0) {
+            continue;
+        }
+        QString family = value.left(comma).trimmed();
+        if (family.size() >= 2 &&
+            ((family.startsWith('"') && family.endsWith('"')) || (family.startsWith('\'') && family.endsWith('\'')))) {
+            family = family.mid(1, family.size() - 2).trimmed();
+        }
+        bool ok = false;
+        int pointSize = value.mid(comma + 1).trimmed().toInt(&ok);
+        if (!ok || family.isEmpty() || pointSize <= 0) {
+            continue;
+        }
+        return true;
+    }
+    return false;
+}
+
+static bool seedCardTextMaxIntoThemeDir(const QString &themeDirPath, int maxSize)
+{
+    if (themeDirPath.isEmpty() || maxSize <= 0) {
+        return false;
+    }
+    QDir dir(themeDirPath);
+    if (!dir.exists()) {
+        return false;
+    }
+    const QString filePath = dir.absoluteFilePath("fonts.toml");
+    if (fontsTomlHasExplicitCardTextMax(filePath)) {
+        return false;
+    }
+
+    QString existing;
+    if (QFile::exists(filePath)) {
+        QFile in(filePath);
+        if (!in.open(QIODevice::ReadOnly | QIODevice::Text)) {
+            return false;
+        }
+        existing = QString::fromUtf8(in.readAll());
+    }
+
+    // Size-only key: seeding the CardText family here would pin it to Serif
+    // for the whole board (names, player labels, the completer), which is not
+    // what the retired maxFontSize setting meant. Let the family keep its
+    // existing resolution and only constrain the size.
+    const QString entry = QString("%1 = %2\n").arg(QStringLiteral("CardTextMaxSize"), -20).arg(maxSize);
+
+    QString out;
+    if (existing.isEmpty()) {
+        out = "[Fonts]\n" + entry + "\n";
+    } else if (existing.contains("[Fonts]", Qt::CaseInsensitive)) {
+        out = existing;
+        if (!out.endsWith('\n')) {
+            out += '\n';
+        }
+        out += entry;
+    } else {
+        out = existing;
+        if (!out.endsWith('\n')) {
+            out += '\n';
+        }
+        out += "\n[Fonts]\n" + entry + "\n";
+    }
+
+    QFile f(filePath);
+    if (!f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
+        return false;
+    }
+    QTextStream stream(&f);
+    stream << out;
+    return true;
+}
+
+static bool appearanceMaxFontSizeMigrationPending(const QString &settingsPath)
+{
+    if (!QFile::exists(settingsPath + "appearance.ini")) {
+        return false;
+    }
+    QSettings appearanceIni(settingsPath + "appearance.ini", QSettings::IniFormat);
+    return appearanceIni.contains("appearance/maxFontSize");
+}
+
+bool SettingsMigration::migrateAppearanceMaxFontSizeToTheme(const QString &settingsPath)
+{
+    if (!appearanceMaxFontSizeMigrationPending(settingsPath)) {
+        return false;
+    }
+
+    QSettings appearanceIni(settingsPath + "appearance.ini", QSettings::IniFormat);
+    // Retired default was 12 in AppearanceSettings::getMaxFontSize; only
+    // non-default values are seeded, default users rely on the theme fallback.
+    const int legacy = appearanceIni.value("appearance/maxFontSize").toInt();
+    if (legacy != 12 && legacy > 0) {
+        const QString themesPath = themesPathForSettings(settingsPath);
+        QDir themesDir(themesPath);
+        const QStringList themes = themesDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot | QDir::NoSymLinks);
+        for (const QString &theme : themes) {
+            seedCardTextMaxIntoThemeDir(themesDir.absoluteFilePath(theme), legacy);
+        }
+
+        // Shipped themes (Fabric, Leather, ...) resolve to the system theme
+        // directory unless the user has already saved something for them, and
+        // System/Fusion only ever exist in the user directory. Seeding existing
+        // folders alone would therefore drop the retired size for every user on
+        // a stock theme, so create the active theme's user directory the same
+        // way ThemeManager::writableThemeDir() does for palette and font saves.
+        const QString activeTheme = appearanceIni.value("appearance/themeName").toString().trimmed();
+        if (!activeTheme.isEmpty() && !themesDir.exists(activeTheme) && themesDir.mkpath(activeTheme)) {
+            seedCardTextMaxIntoThemeDir(themesDir.absoluteFilePath(activeTheme), legacy);
+        }
+    }
+
+    appearanceIni.remove("appearance/maxFontSize");
+    appearanceIni.sync();
+    return true;
+}
+
 static void migrateNetworkSettings(const QString &settingsPath, QSettings &globalIni)
 {
     const QMap<QString, QString> networkKeyMap = {
@@ -821,6 +1001,10 @@ bool SettingsMigration::isMigrationPending(const QString &settingsPath)
         return true;
     }
 
+    if (appearanceMaxFontSizeMigrationPending(settingsPath)) {
+        return true;
+    }
+
     QSettings personalIni(settingsPath + "personal.ini", QSettings::IniFormat);
     if (personalIni.value("migration/legacy_complete", false).toBool()) {
         return false;

libcockatrice_settings/libcockatrice/settings/settings_migration.h

@@ -18,6 +18,15 @@ public:
      */
     static bool migrateGameFiltersToCamelCase(const QString &settingsPath);
 
+    /**
+     * Moves a non-default appearance/maxFontSize value into each user-writable theme
+     * directory lacking an explicit CardText max (creating/merging fonts.toml, never
+     * overwriting an explicit max), then deletes the legacy key. Default (12) or absent
+     * values only delete the key and create no files, since the ThemeManager fallback
+     * already covers them. Idempotent, safe to run on every startup.
+     */
+    static bool migrateAppearanceMaxFontSizeToTheme(const QString &settingsPath);
+
     /**
      * Returns true when at least one of the two migrations would still do work, i.e. when a
      * backup of the settings directory is worth taking before they run.

tests/CMakeLists.txt

@@ -412,6 +412,15 @@ cockatrice_add_test(
   INCLUDE_DIRS
   ${CMAKE_SOURCE_DIR}/cockatrice/src
 )
+cockatrice_add_test(
+  NAME
+  font_config_test
+  SOURCES
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/theme_config.cpp
+  font_config_test.cpp
+  INCLUDE_DIRS
+  ${CMAKE_SOURCE_DIR}/cockatrice/src
+)
 cockatrice_add_test(
   NAME
   loader_local_matching_test

tests/font_config_test.cpp

@@ -0,0 +1,344 @@
+#include "interface/theme_config.h"
+
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QFont>
+#include <QIODevice>
+#include <QString>
+#include <QStringLiteral>
+#include <QTemporaryDir>
+#include <QTextStream>
+#include <gtest/gtest.h>
+#include <string>
+
+namespace
+{
+// Writes content to a file inside tmp, creating parents as needed.
+QString writeTempFile(QTemporaryDir &tmp, const QString &relativePath, const QString &content)
+{
+    const QString filePath = QDir(tmp.path()).absoluteFilePath(relativePath);
+    EXPECT_TRUE(QDir().mkpath(QFileInfo(filePath).absolutePath()));
+    QFile file(filePath);
+    EXPECT_TRUE(file.open(QIODevice::WriteOnly | QIODevice::Text));
+    QTextStream out(&file);
+    out << content;
+    file.close();
+    return filePath;
+}
+
+QFont makeFont(const QString &family, int pointSize)
+{
+    QFont font(family);
+    font.setPointSize(pointSize);
+    return font;
+}
+} // namespace
+
+TEST(FontConfigTest, FileNameIsFontsToml)
+{
+    EXPECT_EQ(FontConfig::fileName(), QStringLiteral("fonts.toml"));
+}
+
+TEST(FontConfigTest, EmptyByDefault)
+{
+    FontConfig cfg;
+    EXPECT_FALSE(cfg.hasFonts());
+    EXPECT_TRUE(cfg.toToml().isEmpty());
+    EXPECT_EQ(cfg, FontConfig());
+    EXPECT_EQ(cfg, FontConfig::fromFile("/nonexistent/path/fonts.toml"));
+    EXPECT_EQ(cfg, FontConfig::fromThemeDir(QString()));
+}
+
+TEST(FontConfigTest, RoundTripPreservesFamilyAndSize)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+    cfg.fonts[AppFont::ChatLog] = makeFont("JetBrains Mono", 9);
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 11);
+    cfg.fonts[AppFont::DeckList] = makeFont("Roboto", 12);
+    ASSERT_TRUE(cfg.hasFonts());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    EXPECT_EQ(loaded, cfg);
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault].family(), QStringLiteral("Inter"));
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault].pointSize(), 10);
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].family(), QStringLiteral("JetBrains Mono"));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].pointSize(), 9);
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].family(), QStringLiteral("Noto Serif"));
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 11);
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList].family(), QStringLiteral("Roboto"));
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList].pointSize(), 12);
+}
+
+TEST(FontConfigTest, RoundTripStripsWeightAndItalic)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    QFont styled("Inter");
+    styled.setPointSize(10);
+    styled.setBold(true);
+    styled.setItalic(true);
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::ChatLog] = styled;
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    ASSERT_TRUE(loaded.fonts.contains(AppFont::ChatLog));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].family(), QStringLiteral("Inter"));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].pointSize(), 10);
+    EXPECT_FALSE(loaded.fonts[AppFont::ChatLog].bold());
+    EXPECT_FALSE(loaded.fonts[AppFont::ChatLog].italic());
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog], makeFont("Inter", 10));
+}
+
+TEST(FontConfigTest, ToTomlFormat)
+{
+    FontConfig cfg;
+    cfg.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+
+    const QString toml = cfg.toToml();
+    EXPECT_TRUE(toml.contains(QStringLiteral("[Fonts]")));
+    EXPECT_TRUE(toml.contains(QStringLiteral("InterfaceDefault")));
+    EXPECT_TRUE(toml.contains(QStringLiteral("\"Inter, 10\"")));
+}
+
+TEST(FontConfigTest, MalformedLinesAreSkipped)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml",
+                                           "# a comment\n"
+                                           "; another comment\n"
+                                           "\n"
+                                           "StrayBeforeSection = \"Inter, 10\"\n"
+                                           "\n"
+                                           "[Other]\n"
+                                           "ChatLog = \"ShouldBeIgnored, 10\"\n"
+                                           "\n"
+                                           "[Fonts]\n"
+                                           "InterfaceDefault = \"Inter, 10\"\n"
+                                           "ChatLog = \"JetBrains Mono\", 9 # inline comment\n"
+                                           "CardText = Noto Serif, 11\n"
+                                           "AppFont::DeckList = \"Roboto, 12\"\n"
+                                           "UnknownRole = \"Inter, 10\"\n"
+                                           "QPalette::Window = \"Inter, 10\"\n"
+                                           "NoComma = \"Inter\"\n"
+                                           "EmptyFamily = \", 10\"\n"
+                                           "ZeroSize = \"Inter, 0\"\n"
+                                           "NegativeSize = \"Inter, -3\"\n"
+                                           "NotANumber = \"Inter, big\"\n"
+                                           "NotAnEntry\n");
+
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    ASSERT_TRUE(loaded.hasFonts());
+    EXPECT_EQ(loaded.fonts.size(), 4);
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault], makeFont("Inter", 10));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog], makeFont("JetBrains Mono", 9));
+    EXPECT_EQ(loaded.fonts[AppFont::CardText], makeFont("Noto Serif", 11));
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList], makeFont("Roboto", 12));
+}
+
+TEST(FontConfigTest, FromThemeDirReadsFontsToml)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QString themeDir = QDir(tmp.path()).absoluteFilePath("MyTheme");
+    ASSERT_TRUE(QDir().mkpath(themeDir));
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 11);
+    writeTempFile(tmp, "MyTheme/fonts.toml", cfg.toToml());
+
+    const FontConfig loaded = FontConfig::fromThemeDir(themeDir);
+    EXPECT_EQ(loaded, cfg);
+
+    // A theme directory without fonts.toml loads as empty.
+    const QString bareDir = QDir(tmp.path()).absoluteFilePath("BareTheme");
+    ASSERT_TRUE(QDir().mkpath(bareDir));
+    EXPECT_FALSE(FontConfig::fromThemeDir(bareDir).hasFonts());
+}
+
+TEST(FontConfigTest, InequalityComparesRoles)
+{
+    FontConfig left;
+    left.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+
+    FontConfig right = left;
+    EXPECT_EQ(left, right);
+    EXPECT_FALSE(left != right);
+
+    right.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 11);
+    EXPECT_NE(left, right);
+
+    right = left;
+    right.fonts[AppFont::ChatLog] = makeFont("Inter", 10);
+    EXPECT_NE(left, right);
+}
+
+TEST(FontConfigTest, CardTextMinRoundTrip)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 14);
+    cfg.cardTextMinSize = 3;
+    ASSERT_TRUE(cfg.hasFonts());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    EXPECT_EQ(loaded, cfg);
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 14);
+    EXPECT_EQ(loaded.cardTextMinSize, 3);
+}
+
+TEST(FontConfigTest, CardTextMinDefaultIsOmitted)
+{
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 12);
+    EXPECT_EQ(cfg.cardTextMinSize, 1);
+
+    const QString toml = cfg.toToml();
+    EXPECT_TRUE(toml.contains(QStringLiteral("CardText")));
+    EXPECT_FALSE(toml.contains(QStringLiteral("CardTextMinSize")));
+
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+    const QString filePath = writeTempFile(tmp, "fonts.toml", toml);
+    EXPECT_EQ(FontConfig::fromFile(filePath).cardTextMinSize, 1);
+}
+
+TEST(FontConfigTest, MalformedMinIsSkipped)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml",
+                                           "[Fonts]\n"
+                                           "CardText = \"Noto Serif, 14\"\n"
+                                           "CardTextMinSize = big\n");
+
+    // Each malformed value parses independently, so rewrite the file per case.
+    const QStringList badValues = {"big", "0", "-3", "", "Inter, 10"};
+    for (const QString &bad : badValues) {
+        const QString badPath = writeTempFile(
+            tmp, "bad.toml", QString("[Fonts]\nCardText = \"Noto Serif, 14\"\nCardTextMinSize = %1\n").arg(bad));
+        const FontConfig loaded = FontConfig::fromFile(badPath);
+        EXPECT_EQ(loaded.cardTextMinSize, 1) << "bad value: " << bad.toStdString();
+        ASSERT_TRUE(loaded.fonts.contains(AppFont::CardText));
+        EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 14);
+    }
+
+    // The valid file still loads.
+    EXPECT_EQ(FontConfig::fromFile(filePath).cardTextMinSize, 1);
+}
+
+TEST(FontConfigTest, CardTextMaxRoundTrip)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 14);
+    cfg.cardTextMaxSize = 18;
+    ASSERT_TRUE(cfg.hasFonts());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    EXPECT_EQ(loaded, cfg);
+    EXPECT_EQ(loaded.cardTextMaxSize, 18);
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 14);
+}
+
+TEST(FontConfigTest, CardTextMaxSizeWithoutFamily)
+{
+    // The retired maxFontSize setting migrates to a size-only key, so the
+    // family keeps its existing resolution instead of being pinned to Serif.
+    FontConfig cfg;
+    cfg.cardTextMaxSize = 18;
+    ASSERT_TRUE(cfg.hasFonts());
+
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    EXPECT_TRUE(loaded.fonts.isEmpty());
+    EXPECT_EQ(loaded.cardTextMaxSize, 18);
+    EXPECT_EQ(loaded, cfg);
+}
+
+TEST(FontConfigTest, CardTextMaxDefaultIsOmitted)
+{
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 12);
+    EXPECT_EQ(cfg.cardTextMaxSize, 0);
+
+    const QString toml = cfg.toToml();
+    EXPECT_FALSE(toml.contains(QStringLiteral("CardTextMaxSize")));
+
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+    const QString filePath = writeTempFile(tmp, "fonts.toml", toml);
+    EXPECT_EQ(FontConfig::fromFile(filePath).cardTextMaxSize, 0);
+}
+
+TEST(FontConfigTest, MalformedMaxIsSkipped)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QStringList badValues = {"big", "0", "-3", "", "Inter, 18"};
+    for (const QString &bad : badValues) {
+        const QString badPath = writeTempFile(
+            tmp, "bad.toml", QString("[Fonts]\nCardText = \"Noto Serif, 14\"\nCardTextMaxSize = %1\n").arg(bad));
+        const FontConfig loaded = FontConfig::fromFile(badPath);
+        EXPECT_EQ(loaded.cardTextMaxSize, 0) << "bad value: " << bad.toStdString();
+        ASSERT_TRUE(loaded.fonts.contains(AppFont::CardText));
+        EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 14);
+    }
+}
+
+TEST(FontConfigTest, InequalityComparesMinSize)
+{
+    FontConfig left;
+    left.fonts[AppFont::CardText] = makeFont("Noto Serif", 12);
+    left.cardTextMinSize = 1;
+
+    FontConfig right = left;
+    right.cardTextMinSize = 2;
+    EXPECT_NE(left, right);
+}
+
+TEST(FontConfigTest, InequalityComparesMaxSize)
+{
+    FontConfig left;
+    left.fonts[AppFont::CardText] = makeFont("Noto Serif", 12);
+    left.cardTextMaxSize = 12;
+
+    FontConfig right = left;
+    right.cardTextMaxSize = 18;
+    EXPECT_NE(left, right);
+}
+
+// Every test brings its own main(): GTest is not guaranteed to be found on the build machines, and
+// the fallback then links the bare gtest library without gtest_main.
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/settings/settings_defaults_test.cpp

@@ -461,19 +461,6 @@ TEST_F(SettingsDefaultsTest, Appearance_StyleUserList_Default)
     ASSERT_EQ(s.getStyleUserList(), true);
 }
 
-TEST_F(SettingsDefaultsTest, Appearance_MaxFontSize_Default)
-{
-    AppearanceSettings s(settingsPath, nullptr);
-    ASSERT_EQ(s.getMaxFontSize(), 12);
-}
-
-TEST_F(SettingsDefaultsTest, Appearance_MaxFontSize_SetAndGet)
-{
-    AppearanceSettings s(settingsPath, nullptr);
-    s.setMaxFontSize(14);
-    ASSERT_EQ(s.getMaxFontSize(), 14);
-}
-
 TEST_F(SettingsDefaultsTest, Appearance_HomeTabBackgroundSource_Default)
 {
     AppearanceSettings s(settingsPath, nullptr);

tests/settings/settings_migration_test.cpp

@@ -984,6 +984,198 @@ TEST_F(SettingsMigrationTest, IsNotMigrationPendingWithoutLegacyData)
     ASSERT_FALSE(SettingsMigration::isMigrationPending(settingsPath));
 }
 
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_NonDefaultSeedsThemeAndDeletesKey)
+{
+    const QString themesPath = tempDir.path() + "/themes";
+    ASSERT_TRUE(QDir().mkpath(themesPath + "/MyTheme"));
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/maxFontSize", 18);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+
+    ASSERT_FALSE(readFromIni("appearance.ini", "appearance/maxFontSize").isValid());
+
+    const QString fontsPath = themesPath + "/MyTheme/fonts.toml";
+    ASSERT_TRUE(QFile::exists(fontsPath));
+    QFile f(fontsPath);
+    ASSERT_TRUE(f.open(QIODevice::ReadOnly | QIODevice::Text));
+    const QString content = QString::fromUtf8(f.readAll());
+    EXPECT_TRUE(content.contains("CardTextMaxSize"));
+    EXPECT_TRUE(content.contains("18"));
+    // Size-only: the migration must not pin the family, or every CardText
+    // surface switches to Serif for users who never chose it.
+    EXPECT_FALSE(content.contains("Serif"));
+
+    ASSERT_FALSE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_SeedsActiveStockTheme)
+{
+    // A stock theme resolves to the system directory, so there is no user theme
+    // folder to seed. The migration has to create the active theme's folder,
+    // otherwise the retired size is deleted without landing anywhere.
+    const QString themesPath = tempDir.path() + "/themes";
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/themeName", "Fabric");
+        appearance.setValue("appearance/maxFontSize", 18);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+
+    ASSERT_FALSE(readFromIni("appearance.ini", "appearance/maxFontSize").isValid());
+
+    const QString fontsPath = themesPath + "/Fabric/fonts.toml";
+    ASSERT_TRUE(QFile::exists(fontsPath));
+    QFile f(fontsPath);
+    ASSERT_TRUE(f.open(QIODevice::ReadOnly | QIODevice::Text));
+    const QString content = QString::fromUtf8(f.readAll());
+    EXPECT_TRUE(content.contains("CardTextMaxSize"));
+    EXPECT_TRUE(content.contains("18"));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_KeepsExistingActiveTheme)
+{
+    const QString themesPath = tempDir.path() + "/themes";
+    ASSERT_TRUE(QDir().mkpath(themesPath + "/Fabric"));
+    {
+        QFile f(themesPath + "/Fabric/fonts.toml");
+        ASSERT_TRUE(f.open(QIODevice::WriteOnly | QIODevice::Text));
+        QTextStream out(&f);
+        out << "[Fonts]\nCardText = \"Inter, 10\"\n";
+    }
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/themeName", "Fabric");
+        appearance.setValue("appearance/maxFontSize", 18);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+
+    QFile f(themesPath + "/Fabric/fonts.toml");
+    ASSERT_TRUE(f.open(QIODevice::ReadOnly | QIODevice::Text));
+    const QString content = QString::fromUtf8(f.readAll());
+    EXPECT_TRUE(content.contains("Inter, 10"));
+    EXPECT_FALSE(content.contains("18"));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_DefaultDeletesKeyWithoutFiles)
+{
+    const QString themesPath = tempDir.path() + "/themes";
+    ASSERT_TRUE(QDir().mkpath(themesPath + "/MyTheme"));
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/maxFontSize", 12);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+    ASSERT_FALSE(readFromIni("appearance.ini", "appearance/maxFontSize").isValid());
+    ASSERT_FALSE(QFile::exists(themesPath + "/MyTheme/fonts.toml"));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_DoesNotOverwriteExplicitMax)
+{
+    const QString themesPath = tempDir.path() + "/themes";
+    ASSERT_TRUE(QDir().mkpath(themesPath + "/MyTheme"));
+    {
+        QFile f(themesPath + "/MyTheme/fonts.toml");
+        ASSERT_TRUE(f.open(QIODevice::WriteOnly | QIODevice::Text));
+        QTextStream out(&f);
+        out << "[Fonts]\nCardText = \"Inter, 10\"\n";
+    }
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/maxFontSize", 18);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+
+    QFile f(themesPath + "/MyTheme/fonts.toml");
+    ASSERT_TRUE(f.open(QIODevice::ReadOnly | QIODevice::Text));
+    const QString content = QString::fromUtf8(f.readAll());
+    EXPECT_TRUE(content.contains("10"));
+    EXPECT_FALSE(content.contains("18"));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_MergesWithOtherRoles)
+{
+    const QString themesPath = tempDir.path() + "/themes";
+    ASSERT_TRUE(QDir().mkpath(themesPath + "/MyTheme"));
+    {
+        QFile f(themesPath + "/MyTheme/fonts.toml");
+        ASSERT_TRUE(f.open(QIODevice::WriteOnly | QIODevice::Text));
+        QTextStream out(&f);
+        out << "[Fonts]\nInterfaceDefault = \"Inter, 10\"\n";
+    }
+    {
+        QSettings paths(settingsPath + "paths.ini", QSettings::IniFormat);
+        paths.setValue("paths/themes", themesPath);
+        paths.sync();
+    }
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/maxFontSize", 20);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+
+    QFile f(themesPath + "/MyTheme/fonts.toml");
+    ASSERT_TRUE(f.open(QIODevice::ReadOnly | QIODevice::Text));
+    const QString content = QString::fromUtf8(f.readAll());
+    EXPECT_TRUE(content.contains("InterfaceDefault"));
+    EXPECT_TRUE(content.contains("CardTextMaxSize"));
+    EXPECT_TRUE(content.contains("20"));
+}
+
+TEST_F(SettingsMigrationTest, AppearanceMaxFontSize_AbsentKeyDoesNothing)
+{
+    ASSERT_FALSE(SettingsMigration::migrateAppearanceMaxFontSizeToTheme(settingsPath));
+}
+
+TEST_F(SettingsMigrationTest, IsMigrationPendingWhenMaxFontSizePresent)
+{
+    {
+        QSettings appearance(settingsPath + "appearance.ini", QSettings::IniFormat);
+        appearance.setValue("appearance/maxFontSize", 18);
+        appearance.sync();
+    }
+
+    ASSERT_TRUE(SettingsMigration::isMigrationPending(settingsPath));
+}
+
 } // namespace
 
 int main(int argc, char **argv)

vcpkg

@@ -1 +1 @@
-Subproject commit 9eec002df1cd109f8f104cd966a763daf9751489
+Subproject commit 9e593bb18ea69cc5095e012465dcd675a822ed0d