diff --git a/core/src/ContainerMenu.cpp b/core/src/ContainerMenu.cpp
index 620df81..3601d9c 100644
--- a/core/src/ContainerMenu.cpp
+++ b/core/src/ContainerMenu.cpp
@@ -468,3 +468,76 @@ void ContainerMenu::bindContainer(Container& container) {
     syncFromContainer();
 }
 
+void ContainerMenu::syncFromContainer() {
+    if (bound == nullptr) return;
+    for (MenuSlot& menuSlot : slots) {
+        if (menuSlot.backingIndex < 0) continue;
+        menuSlot.cell.stack = fromItemSlot(bound->slot(menuSlot.backingIndex));
+    }
+    refreshResult();
+}
+
+void ContainerMenu::syncToContainer() {
+    if (bound == nullptr) return;
+    for (const MenuSlot& menuSlot : slots) {
+        if (menuSlot.backingIndex < 0) continue;
+        bound->setSlot(menuSlot.backingIndex, toItemSlot(menuSlot.cell.stack));
+    }
+}
+
+void ContainerMenu::unbind() {
+    syncToContainer();
+    for (MenuSlot& menuSlot : slots) menuSlot.backingIndex = -1;
+    bound = nullptr;
+}
+
+CraftingView ContainerMenu::crafting() { return CraftingView(*this); }
+
+const MetaStack& ContainerMenu::resultStack() const {
+    if (menuLayout.resultSlot < 0) return emptyStack();
+    return stackAt(menuLayout.resultSlot);
+}
+
+void ContainerMenu::refreshResult() {
+    if (menuLayout.resultSlot < 0) return;
+    CraftingView view(*this);
+    view.refresh();
+}
+
+NbtTag ContainerMenu::toNbt() const {
+    NbtTag tag = NbtTag::makeCompound();
+    tag.put("Kind", NbtTag::makeShort(static_cast<int16_t>(menuKind)));
+    tag.put("Creative", NbtTag::makeByte(creative ? 1 : 0));
+    NbtTag list = NbtTag::makeList(NbtType::Compound);
+    for (const MenuSlot& menuSlot : slots) list.listAppend(stackToNbt(menuSlot.cell.stack));
+    tag.put("Slots", list);
+    return tag;
+}
+
+bool ContainerMenu::fromNbt(const NbtTag& tag) {
+    if (tag.kind() != NbtType::Compound) return false;
+    const NbtTag* kindTag = tag.find("Kind");
+    if (kindTag == nullptr || kindTag->kind() != NbtType::Short) return false;
+    int32_t rawKind = kindTag->asInt();
+    if (rawKind < 0 || rawKind >= static_cast<int32_t>(MenuKind::Count)) return false;
+
+    const NbtTag* list = tag.find("Slots");
+    if (list == nullptr || list->kind() != NbtType::List) return false;
+
+    menuKind = static_cast<MenuKind>(rawKind);
+    buildSlots();
+    bound = nullptr;
+
+    const NbtTag* creativeTag = tag.find("Creative");
+    creative = creativeTag != nullptr && creativeTag->kind() == NbtType::Byte &&
+               creativeTag->asByte() != 0;
+
+    const NbtList& rows = list->asList();
+    if (static_cast<int>(rows.size()) != slotCount()) return false;
+    for (int i = 0; i < slotCount(); ++i) {
+        if (!stackFromNbt(rows[static_cast<std::size_t>(i)], slot(i).cell.stack)) return false;
+    }
+    return true;
+}
+
+} // namespace vf