--- scribus/ui/stylemanager.cpp
+++ scribus/ui/stylemanager.cpp
@@ -5,11 +5,21 @@
 for which a new license (GPL+exception) is in place.
 */
 
+#include <QAbstractItemView>
 #include <QDebug>
+#include <QDialog>
+#include <QDialogButtonBox>
 #include <QEvent>
+#include <QHeaderView>
+#include <QLabel>
 #include <QMenu>
-#include <QToolTip>
 #include <QMessageBox>
+#include <QPushButton>
+#include <QScreen>
+#include <QSizePolicy>
+#include <QToolTip>
+#include <QTreeWidget>
+#include <QVBoxLayout>
 
 #include "commonstrings.h"
 #include "fileloader.h"
@@ -537,7 +547,13 @@
 		slotOk();
 
 	int totalUnused = 0;
-	QStringList unusedSummary;
+
+	struct UnusedStyleEntry
+	{
+		QString typeName;
+		QString styleName;
+	};
+	QList<UnusedStyleEntry> unusedStyles;
 
 	struct ItemDeletion
 	{
@@ -579,7 +595,7 @@
 			if (!usedMap->contains(styleName))
 			{
 				removeList.append(RemoveItem(styleName, QString()));
-				unusedSummary << QString("  %1: %2").arg(styleitem->typeName(), styleName);
+				unusedStyles.append({styleitem->typeName(), styleName});
 			}
 		}
 
@@ -592,20 +608,70 @@
 
 	if (totalUnused == 0)
 	{
-		ScMessageBox::information(this, tr("Remove Unused Styles"),
-			tr("All styles in this document are in use. Nothing to remove."));
+		ScMessageBox::information(this, tr("Delete Unused Styles"),
+			tr("All styles in this document are in use. Nothing to delete."));
 		return;
 	}
 
-	// Confirmation dialog
-	QString message = tr("Found %1 unused style(s):\n\n").arg(totalUnused);
-	message += unusedSummary.join("\n");
-	message += "\n\n";
-	message += tr("Remove all unused styles?");
-
-	int result = ScMessageBox::question(this, tr("Remove Unused Styles"), message, QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
+	QDialog dialog(this);
+	dialog.setWindowTitle(tr("Delete Unused Styles"));
+	dialog.setSizeGripEnabled(true);
+
+	QVBoxLayout* layout = new QVBoxLayout(&dialog);
+
+	QLabel* summaryLabel = new QLabel(tr("%n unused style(s) found.", nullptr, totalUnused), &dialog);
+	layout->addWidget(summaryLabel);
+
+	QLabel* detailLabel = new QLabel(tr("The following styles are not used by any object in the document:"), &dialog);
+	detailLabel->setWordWrap(true);
+	layout->addWidget(detailLabel);
+
+	QTreeWidget* unusedStyleList = new QTreeWidget(&dialog);
+	unusedStyleList->setHeaderLabels(QStringList() << tr("Type") << tr("Style"));
+	unusedStyleList->setRootIsDecorated(false);
+	unusedStyleList->setAlternatingRowColors(true);
+	unusedStyleList->setSelectionMode(QAbstractItemView::NoSelection);
+	unusedStyleList->setUniformRowHeights(true);
+	unusedStyleList->setMinimumHeight(180);
+	unusedStyleList->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+
+	for (int i = 0; i < unusedStyles.count(); ++i)
+	{
+		QTreeWidgetItem* row = new QTreeWidgetItem(unusedStyleList);
+		row->setText(0, unusedStyles.at(i).typeName);
+		row->setText(1, unusedStyles.at(i).styleName);
+	}
+
+	QHeaderView* unusedStyleListHeader = unusedStyleList->header();
+	unusedStyleListHeader->setSectionResizeMode(QHeaderView::Interactive);
+	unusedStyleListHeader->setStretchLastSection(false);
+	unusedStyleList->resizeColumnToContents(0);
+	unusedStyleList->setColumnWidth(0, qMax(120, unusedStyleList->columnWidth(0)));
+	unusedStyleList->setColumnWidth(1, qMax(320, unusedStyleList->columnWidth(1)));
+	layout->addWidget(unusedStyleList);
+
+	QLabel* warningLabel = new QLabel(tr("Delete all listed styles?"), &dialog);
+	warningLabel->setWordWrap(true);
+	layout->addWidget(warningLabel);
+
+	QDialogButtonBox* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, &dialog);
+	buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Delete Styles"));
+	connect(buttonBox, SIGNAL(accepted()), &dialog, SLOT(accept()));
+	connect(buttonBox, SIGNAL(rejected()), &dialog, SLOT(reject()));
+	layout->addWidget(buttonBox);
+
+	const QScreen* dialogScreen = screen();
+	if (dialogScreen)
+	{
+		const QRect availableGeometry = dialogScreen->availableGeometry();
+		const int dialogWidth = qMin(qMax(560, availableGeometry.width() / 2), qMax(320, availableGeometry.width() - 80));
+		const int dialogHeight = qMin(520, qMax(280, availableGeometry.height() - 120));
+		dialog.resize(dialogWidth, dialogHeight);
+	}
+	else
+		dialog.resize(560, 520);
 
-	if (result != QMessageBox::Yes)
+	if (dialog.exec() != QDialog::Accepted)
 		return;
 
 	// Delete through each StyleItem — modifies temp copies only