diff --git a/resources/js/pages/admin/manage/purchases/form/PurchasePosCartDetailDialog.vue b/resources/js/pages/admin/manage/purchases/form/PurchasePosCartDetailDialog.vue
index bce687b..0ab6e6c 100644
--- a/resources/js/pages/admin/manage/purchases/form/PurchasePosCartDetailDialog.vue
+++ b/resources/js/pages/admin/manage/purchases/form/PurchasePosCartDetailDialog.vue
@@ -1,31 +1,62 @@
 <script setup lang="ts">
+import { computed } from 'vue';
 import {
     Dialog,
     DialogContent,
     DialogHeader,
     DialogTitle,
 } from '@/components/ui/dialog';
+import {
+    Empty,
+    EmptyDescription,
+    EmptyHeader,
+    EmptyTitle,
+} from '@/components/ui/empty';
 import { formatRupiah } from '@/lib/rupiah';
 import type { PurchaseCartItem } from '@/types/purchase';
 
-defineProps<{
+const props = defineProps<{
     cart: PurchaseCartItem[];
     lineSubtotal: (item: PurchaseCartItem) => number;
     total: number;
 }>();
 
+const emit = defineEmits<{
+    remove: [index: number];
+    'adjust-quantity': [index: number, delta: number];
+    'set-quantity': [index: number, value: string];
+}>();
+
 const open = defineModel<boolean>('open', { required: true });
+
+function onQtyInput(index: number, event: Event) {
+    emit('set-quantity', index, (event.target as HTMLInputElement).value);
+}
+
+const hasItems = computed(() => props.cart.length > 0);
 </script>
 
 <template>
     <Dialog v-model:open="open">
-        <DialogContent class="sm:max-w-lg min-w-0">
+        <DialogContent class="sm:max-w-lg min-w-0 max-h-[90dvh] flex flex-col overflow-y-auto">
             <DialogHeader>
                 <DialogTitle>Detail Keranjang</DialogTitle>
             </DialogHeader>
-            <div class="scrollbar-thin max-h-96 space-y-3 overflow-y-auto overscroll-y-contain">
+
+            <div v-if="!hasItems" class="rounded-lg border border-dashed text-center text-sm text-muted-foreground">
+                <Empty>
+                    <EmptyHeader>
+                        <EmptyTitle>Keranjang masih kosong</EmptyTitle>
+                        <EmptyDescription>
+                            Pilih varian bahan baku untuk menambahkan ke keranjang.
+                        </EmptyDescription>
+                    </EmptyHeader>
+                </Empty>
+            </div>
+
+            <div v-else class="scrollbar-thin max-h-96 space-y-3 overflow-y-auto overscroll-y-contain">
                 <div
-                    v-for="item in cart"
+                    v-for="(item, index) in cart"
                     :key="`detail-${item.raw_material_price_id}`"
                     class="rounded-lg border p-3"
                 >
@@ -34,17 +65,50 @@ const open = defineModel<boolean>('open', { required: true });
                             <p class="truncate text-sm font-medium">{{ item.raw_material_name }}</p>
                             <p class="truncate text-xs text-muted-foreground">{{ item.variant }}</p>
                         </div>
-                        <span class="shrink-0 text-xs font-medium tabular-nums">
-                            {{ item.quantity }} {{ item.unit_abbreviation }}
-                        </span>
+                        <button
+                            type="button"
+                            class="flex size-7 shrink-0 items-center justify-center rounded text-muted-foreground transition-colors hover:bg-destructive/10 hover:text-destructive"
+                            @click="emit('remove', index)"
+                        >
+                            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 6h18"/><path d="M19 6v14c0 1-1 2-2 2H7c-1 0-2-1-2-2V6"/><path d="M8 6V4c0-1 1-2 2-2h4c1 0 2 1 2 2v2"/></svg>
+                        </button>
                     </div>
+
+                    <label class="mt-2 block text-xs text-muted-foreground">
+                        Jumlah ({{ item.unit_abbreviation }})
+                    </label>
+                    <div class="mt-1 flex items-center gap-1">
+                        <button
+                            type="button"
+                            class="flex size-8 shrink-0 items-center justify-center rounded border text-sm transition-colors hover:bg-muted"
+                            @click="emit('adjust-quantity', index, -1)"
+                        >
+                            &minus;
+                        </button>
+                        <input
+                            type="text"
+                            inputmode="decimal"
+                            :value="item.quantity"
+                            class="h-8 w-full rounded border bg-transparent px-2 text-center text-sm focus:outline-none focus:ring-1 focus:ring-ring"
+                            @change="onQtyInput(index, $event)"
+                        />
+                        <button
+                            type="button"
+                            class="flex size-8 shrink-0 items-center justify-center rounded border text-sm transition-colors hover:bg-muted"
+                            @click="emit('adjust-quantity', index, 1)"
+                        >
+                            +
+                        </button>
+                    </div>
+
                     <div class="mt-1.5 flex items-center justify-between gap-2 text-xs text-muted-foreground">
                         <span>@ Rp {{ formatRupiah(item.unit_price) }}</span>
                         <span class="font-medium text-foreground">Rp {{ formatRupiah(lineSubtotal(item)) }}</span>
                     </div>
                 </div>
             </div>
-            <div class="border-t pt-3">
+
+            <div v-if="hasItems" class="border-t pt-3">
                 <div class="flex items-center justify-between text-sm font-semibold">
                     <span>Total</span>
                     <span class="text-primary">Rp {{ formatRupiah(total) }}</span>
diff --git a/resources/js/pages/admin/manage/purchases/form/PurchasePosForm.vue b/resources/js/pages/admin/manage/purchases/form/PurchasePosForm.vue
index e3b907d..db4f735 100644
--- a/resources/js/pages/admin/manage/purchases/form/PurchasePosForm.vue
+++ b/resources/js/pages/admin/manage/purchases/form/PurchasePosForm.vue
@@ -64,6 +64,7 @@ const {
     removeFromCart,
     adjustQuantity,
     syncCartItemQuantity,
+    setCartItemQuantity,
     decreasePriceQty,
 } = usePurchasePosCart({
     catalog: () => props.catalog,
@@ -223,5 +224,20 @@ function submit() {
         :cart="cart"
         :line-subtotal="lineSubtotal"
         :total="total"
+        @remove="removeFromCart"
+        @adjust-quantity="adjustQuantity"
+        @set-quantity="setCartItemQuantity"
     />
+
+    <button
+        v-if="cart.length > 0"
+        type="button"
+        class="fixed top-50 right-6 z-50 flex size-14 items-center justify-center rounded-full bg-primary text-primary-foreground shadow-lg transition-transform hover:scale-105 active:scale-95 xl:hidden"
+        @click="cartDetailOpen = true"
+    >
+        <ShoppingCart class="size-6" />
+        <span class="absolute -right-1 -top-1 flex size-6 items-center justify-center rounded-full bg-destructive text-[11px] font-bold text-destructive-foreground">
+            {{ cart.length > 99 ? '99+' : cart.length }}
+        </span>
+    </button>
 </template>
diff --git a/resources/js/pages/admin/manage/purchases/form/usePurchasePosCart.ts b/resources/js/pages/admin/manage/purchases/form/usePurchasePosCart.ts
index 60beecf..6df94e9 100644
--- a/resources/js/pages/admin/manage/purchases/form/usePurchasePosCart.ts
+++ b/resources/js/pages/admin/manage/purchases/form/usePurchasePosCart.ts
@@ -189,6 +189,31 @@ export function usePurchasePosCart(options: {
         }
     }
 
+    async function setCartItemQuantity(index: number, value: string) {
+        const item = cart.value[index];
+        const nextQty = Number.parseFloat(value.replace(',', '.'));
+
+        if (Number.isNaN(nextQty) || nextQty < 0) {
+            return;
+        }
+
+        if (nextQty <= 0) {
+            await removeFromCart(index);
+
+            return;
+        }
+
+        item.quantity = String(nextQty);
+
+        if (toValue(options.isCreateMode)) {
+            try {
+                await syncDraftItem(item.raw_material_price_id, nextQty);
+            } catch (error) {
+                toast.error(error instanceof Error ? error.message : 'Gagal memperbarui jumlah item.');
+            }
+        }
+    }
+
     return {
         search,
         cart,
@@ -202,6 +227,7 @@ export function usePurchasePosCart(options: {
         removeFromCart,
         adjustQuantity,
         syncCartItemQuantity,
+        setCartItemQuantity,
         decreasePriceQty,
         upsertCartItem,
     };