diff --git a/src/typeselectorpopup.cpp b/src/typeselectorpopup.cpp
index 0ed3d90..620e410 100644
--- a/src/typeselectorpopup.cpp
+++ b/src/typeselectorpopup.cpp
@@ -97,6 +97,12 @@ public:
         int h = option.rect.height();
         int w = option.rect.width();
 
+        // Scale metrics from font height
+        QFontMetrics fmMain(m_font);
+        int iconSz = fmMain.height();            // icon matches text height
+        int gutterW = fmMain.horizontalAdvance(QChar(0x25B8)) + 4;
+        int iconColW = iconSz + 4;
+
         // Section: centered dim text with horizontal rules
         if (isSection) {
             painter->setPen(t.textDim);
@@ -133,18 +139,18 @@ public:
             if (isCurrent) {
                 painter->setPen(t.text);
                 painter->setFont(m_font);
-                painter->drawText(QRect(x, y, 10, h), Qt::AlignCenter,
+                painter->drawText(QRect(x, y, gutterW, h), Qt::AlignCenter,
                                   QString(QChar(0x25B8)));
             }
         }
-        x += 10;
+        x += gutterW;
 
-        // Icon 16x16 — only for composite entries
+        // Icon (scaled to font height) — only for composite entries
         bool hasIcon = (m_filtered && row >= 0 && row < m_filtered->size()
                         && (*m_filtered)[row].entryKind == TypeEntry::Composite);
         if (hasIcon) {
             static QIcon structIcon(QStringLiteral(":/vsicons/symbol-structure.svg"));
-            QPixmap pm = structIcon.pixmap(16, 16);
+            QPixmap pm = structIcon.pixmap(iconSz, iconSz);
             if (isDisabled) {
                 // Paint dimmed
                 QPixmap dimmed(pm.size());
@@ -153,12 +159,12 @@ public:
                 p.setOpacity(0.35);
                 p.drawPixmap(0, 0, pm);
                 p.end();
-                painter->drawPixmap(x, y + (h - 16) / 2, dimmed);
+                painter->drawPixmap(x, y + (h - iconSz) / 2, dimmed);
             } else {
-                structIcon.paint(painter, x, y + (h - 16) / 2, 16, 16);
+                structIcon.paint(painter, x, y + (h - iconSz) / 2, iconSz, iconSz);
             }
         }
-        x += 20;
+        x += iconColW;
 
         // Text
         QColor textColor;
@@ -498,7 +504,9 @@ void TypeSelectorPopup::popup(const QPoint& globalPos) {
         QString text = t.classKeyword.isEmpty()
             ? t.displayName
             : (t.classKeyword + QStringLiteral(" ") + t.displayName);
-        int w = 10 + 20 + fm.horizontalAdvance(text) + 16;
+        int gutterW = fm.horizontalAdvance(QChar(0x25B8)) + 4;
+        int iconColW = fm.height() + 4;
+        int w = gutterW + iconColW + fm.horizontalAdvance(text) + 16;
         if (w > maxTextW) maxTextW = w;
     }
     int popupW = qBound(280, maxTextW + 24, 500);
diff --git a/tests/test_type_selector.cpp b/tests/test_type_selector.cpp
index cd92231..ad030f1 100644
--- a/tests/test_type_selector.cpp
+++ b/tests/test_type_selector.cpp
@@ -793,6 +793,100 @@ private slots:
         delete splitter;
         delete doc;
     }
+    // ── Test: SVG icon and gutter scale with font size ──
+
+    void testDelegateIconScalesWithFont() {
+        // Create a popup and set two different font sizes.
+        // The delegate sizeHint row height should scale with font.
+        TypeSelectorPopup popup;
+
+        TypeEntry prim;
+        prim.entryKind = TypeEntry::Primitive;
+        prim.primitiveKind = NodeKind::Int32;
+        prim.displayName = QStringLiteral("int32_t");
+
+        TypeEntry comp;
+        comp.entryKind = TypeEntry::Composite;
+        comp.structId = 100;
+        comp.displayName = QStringLiteral("TestStruct");
+        comp.classKeyword = QStringLiteral("struct");
+
+        // Small font
+        QFont small(QStringLiteral("Consolas"), 9);
+        popup.setFont(small);
+        popup.setTypes({prim, comp});
+        popup.popup(QPoint(-9999, -9999));  // offscreen
+        QApplication::processEvents();
+
+        auto* listView = popup.findChild<QListView*>();
+        QVERIFY(listView);
+        auto* delegate = listView->itemDelegate();
+        QVERIFY(delegate);
+
+        // Find first non-section row for consistent measurement
+        int dataRow = -1;
+        for (int i = 0; i < listView->model()->rowCount(); i++) {
+            QSize h = delegate->sizeHint(QStyleOptionViewItem(), listView->model()->index(i, 0));
+            // Non-section rows are taller (font.height + 8 vs + 2)
+            if (h.height() > QFontMetrics(small).height() + 4) { dataRow = i; break; }
+        }
+        QVERIFY2(dataRow >= 0, "Should find a non-section row");
+
+        QSize smallHint = delegate->sizeHint(QStyleOptionViewItem(), listView->model()->index(dataRow, 0));
+        popup.hide();
+
+        // Large font (simulates zoomed editor)
+        QFont large(QStringLiteral("Consolas"), 18);
+        popup.setFont(large);
+        popup.setTypes({prim, comp});
+        popup.popup(QPoint(-9999, -9999));
+        QApplication::processEvents();
+
+        QSize largeHint = delegate->sizeHint(QStyleOptionViewItem(), listView->model()->index(dataRow, 0));
+        popup.hide();
+
+        // Large font should produce taller rows than small font
+        QVERIFY2(largeHint.height() > smallHint.height(),
+                 qPrintable(QString("Large hint %1 should be > small hint %2")
+                     .arg(largeHint.height()).arg(smallHint.height())));
+
+        // The ratio should roughly match the font size ratio (18/9 = 2x)
+        double ratio = double(largeHint.height()) / double(smallHint.height());
+        QVERIFY2(ratio > 1.4, qPrintable(QString("Row height ratio %1 should be > 1.4").arg(ratio)));
+    }
+
+    void testPopupWidthScalesWithFont() {
+        TypeSelectorPopup popup;
+
+        TypeEntry comp;
+        comp.entryKind = TypeEntry::Composite;
+        comp.structId = 100;
+        comp.displayName = QStringLiteral("MyLongStructName");
+        comp.classKeyword = QStringLiteral("struct");
+        popup.setTypes({comp});
+
+        // Small font
+        QFont small(QStringLiteral("Consolas"), 9);
+        popup.setFont(small);
+        popup.popup(QPoint(-9999, -9999));
+        QApplication::processEvents();
+        int smallW = popup.width();
+        popup.hide();
+
+        // Large font
+        QFont large(QStringLiteral("Consolas"), 18);
+        popup.setFont(large);
+        popup.setTypes({comp});
+        popup.popup(QPoint(-9999, -9999));
+        QApplication::processEvents();
+        int largeW = popup.width();
+        popup.hide();
+
+        // Popup with larger font should be wider
+        QVERIFY2(largeW > smallW,
+                 qPrintable(QString("Large popup width %1 should be > small %2")
+                     .arg(largeW).arg(smallW)));
+    }
 };
 
 QTEST_MAIN(TestTypeSelector)