feat: 新增採購統計分析功能並優化 API 文件顯示樣式

- 在 RoleController 中新增 procurement_analysis 權限群組名稱
- 在 Procurement 模組中新增採購統計分析路由
- 在 PermissionSeeder 中新增 procurement_analysis.view 權限並分配給角色
- 在側邊欄「報表與分析」分組中新增「採購統計分析」項目
- 優化 API 文件視圖中的表格外觀樣式

app/Modules/Core/Controllers/RoleController.php

@@ -199,6 +199,7 @@ class RoleController extends Controller
             'sales_imports' => '銷售單匯入管理',
             'sales_orders' => '銷售訂單管理',
             'store_requisitions' => '門市叫貨申請',
+            'procurement_analysis' => '採購統計分析',
             'users' => '使用者管理',
             'roles' => '角色與權限',
             'system' => '系統管理',

app/Modules/Procurement/Controllers/ProcurementAnalysisController.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Modules\Procurement\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Modules\Procurement\Services\ProcurementAnalysisService;
+use App\Modules\Procurement\Models\Vendor;
+use App\Modules\Inventory\Contracts\InventoryServiceInterface;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+
+class ProcurementAnalysisController extends Controller
+{
+    public function __construct(
+        protected ProcurementAnalysisService $analysisService,
+        protected InventoryServiceInterface $inventoryService,
+    ) {}
+
+    public function index(Request $request)
+    {
+        $filters = $request->only([
+            'date_from', 'date_to', 'vendor_id', 'warehouse_id',
+        ]);
+
+        // 取得各面向數據
+        $kpis = $this->analysisService->getKPIs($filters);
+        $deliveryAnalysis = $this->analysisService->getDeliveryAnalysis($filters);
+        $quantityAnalysis = $this->analysisService->getQuantityAnalysis($filters);
+        $priceTrendAnalysis = $this->analysisService->getPriceTrendAnalysis($filters);
+
+        // 取得篩選器選項（跨模組透過 Service 取得倉庫）
+        $warehouses = $this->inventoryService->getAllWarehouses();
+        $vendors = Vendor::select('id', 'name', 'code')->orderBy('name')->get();
+
+        return Inertia::render('Procurement/Analysis/Index', [
+            'kpis' => $kpis,
+            'deliveryAnalysis' => $deliveryAnalysis,
+            'quantityAnalysis' => $quantityAnalysis,
+            'priceTrendAnalysis' => $priceTrendAnalysis,
+            'vendors' => $vendors,
+            'warehouses' => $warehouses,
+            'filters' => $filters,
+        ]);
+    }
+}

app/Modules/Procurement/Routes/web.php

@@ -4,6 +4,7 @@ use Illuminate\Support\Facades\Route;
 use App\Modules\Procurement\Controllers\VendorController;
 use App\Modules\Procurement\Controllers\VendorProductController;
 use App\Modules\Procurement\Controllers\PurchaseOrderController;
+use App\Modules\Procurement\Controllers\ProcurementAnalysisController;
 
 Route::middleware('auth')->group(function () {
     // 廠商管理
@@ -77,4 +78,9 @@ Route::middleware('auth')->group(function () {
 
         Route::delete('/delivery-notes/{id}', [\App\Modules\Procurement\Controllers\ShippingOrderController::class, 'destroy'])->middleware('permission:delivery_notes.delete')->name('delivery-notes.destroy');
     });
+
+    // 採購統計分析
+    Route::get('/procurement/analysis', [ProcurementAnalysisController::class, 'index'])
+        ->middleware('permission:procurement_analysis.view')
+        ->name('procurement.analysis.index');
 });

app/Modules/Procurement/Services/ProcurementAnalysisService.php

@@ -0,0 +1,280 @@
+<?php
+
+namespace App\Modules\Procurement\Services;
+
+use App\Modules\Procurement\Models\PurchaseOrder;
+use App\Modules\Procurement\Models\PurchaseOrderItem;
+use App\Modules\Procurement\Models\Vendor;
+use App\Modules\Inventory\Contracts\InventoryServiceInterface;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Carbon;
+
+class ProcurementAnalysisService
+{
+    public function __construct(
+        protected InventoryServiceInterface $inventoryService,
+    ) {}
+
+    /**
+     * 取得 KPI 總覽數據
+     */
+    public function getKPIs(array $filters): array
+    {
+        $dateFrom = $filters['date_from'] ?? Carbon::now()->subMonths(6)->format('Y-m-d');
+        $dateTo = $filters['date_to'] ?? Carbon::now()->format('Y-m-d');
+        $vendorId = $filters['vendor_id'] ?? null;
+        $warehouseId = $filters['warehouse_id'] ?? null;
+
+        // 採購單基礎查詢（排除草稿與已取消）
+        $poQuery = PurchaseOrder::whereNotIn('status', ['draft', 'cancelled'])
+            ->whereBetween('order_date', [$dateFrom, $dateTo]);
+        if ($vendorId) $poQuery->where('vendor_id', $vendorId);
+        if ($warehouseId) $poQuery->where('warehouse_id', $warehouseId);
+
+        $totalAmount = (clone $poQuery)->sum('grand_total') ?: (clone $poQuery)->sum('total_amount');
+        $totalOrders = (clone $poQuery)->count();
+
+        // 進貨單查詢
+        $grQuery = DB::table('goods_receipts')
+            ->where('status', 'completed')
+            ->whereBetween('received_date', [$dateFrom, $dateTo])
+            ->whereNull('deleted_at');
+        if ($vendorId) $grQuery->where('vendor_id', $vendorId);
+        if ($warehouseId) $grQuery->where('warehouse_id', $warehouseId);
+
+        $totalReceipts = (clone $grQuery)->count();
+
+        // 平均交期天數（採購單→進貨單）
+        $deliveryStats = DB::table('purchase_orders as po')
+            ->join('goods_receipts as gr', 'gr.purchase_order_id', '=', 'po.id')
+            ->whereNotIn('po.status', ['draft', 'cancelled'])
+            ->where('gr.status', 'completed')
+            ->whereNull('gr.deleted_at')
+            ->whereBetween('po.order_date', [$dateFrom, $dateTo]);
+        if ($vendorId) $deliveryStats->where('po.vendor_id', $vendorId);
+        if ($warehouseId) $deliveryStats->where('po.warehouse_id', $warehouseId);
+
+        $deliveryStats = $deliveryStats->selectRaw('
+            AVG(DATEDIFF(gr.received_date, po.order_date)) as avg_days,
+            COUNT(*) as total_linked,
+            SUM(CASE WHEN gr.received_date <= po.expected_delivery_date THEN 1 ELSE 0 END) as on_time_count
+        ')->first();
+
+        $avgDays = round($deliveryStats->avg_days ?? 0, 1);
+        $onTimeRate = $deliveryStats->total_linked > 0
+            ? round(($deliveryStats->on_time_count / $deliveryStats->total_linked) * 100, 1)
+            : 0;
+
+        return [
+            'total_amount' => (float) $totalAmount,
+            'total_orders' => $totalOrders,
+            'total_receipts' => $totalReceipts,
+            'avg_delivery_days' => $avgDays,
+            'on_time_rate' => $onTimeRate,
+        ];
+    }
+
+    /**
+     * 廠商供貨時效分析
+     */
+    public function getDeliveryAnalysis(array $filters): array
+    {
+        $dateFrom = $filters['date_from'] ?? Carbon::now()->subMonths(6)->format('Y-m-d');
+        $dateTo = $filters['date_to'] ?? Carbon::now()->format('Y-m-d');
+        $vendorId = $filters['vendor_id'] ?? null;
+        $warehouseId = $filters['warehouse_id'] ?? null;
+
+        $query = DB::table('purchase_orders as po')
+            ->join('goods_receipts as gr', 'gr.purchase_order_id', '=', 'po.id')
+            ->whereNotIn('po.status', ['draft', 'cancelled'])
+            ->where('gr.status', 'completed')
+            ->whereNull('gr.deleted_at')
+            ->whereBetween('po.order_date', [$dateFrom, $dateTo]);
+        if ($vendorId) $query->where('po.vendor_id', $vendorId);
+        if ($warehouseId) $query->where('po.warehouse_id', $warehouseId);
+
+        // 按廠商分組的交期統計
+        $vendorDelivery = (clone $query)
+            ->join('vendors', 'vendors.id', '=', 'po.vendor_id')
+            ->groupBy('po.vendor_id', 'vendors.name')
+            ->selectRaw('
+                po.vendor_id,
+                vendors.name as vendor_name,
+                COUNT(*) as total_count,
+                ROUND(AVG(DATEDIFF(gr.received_date, po.order_date)), 1) as avg_days,
+                MIN(DATEDIFF(gr.received_date, po.order_date)) as min_days,
+                MAX(DATEDIFF(gr.received_date, po.order_date)) as max_days,
+                SUM(CASE WHEN gr.received_date <= po.expected_delivery_date THEN 1 ELSE 0 END) as on_time_count
+            ')
+            ->orderBy('avg_days', 'asc')
+            ->get()
+            ->map(function ($row) {
+                $row->on_time_rate = $row->total_count > 0
+                    ? round(($row->on_time_count / $row->total_count) * 100, 1) : 0;
+                return $row;
+            });
+
+        // 延遲分佈統計
+        $delayDistribution = (clone $query)
+            ->selectRaw("
+                CASE
+                    WHEN DATEDIFF(gr.received_date, po.order_date) <= 0 THEN '提前到貨'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 1 AND 3 THEN '1-3天'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 4 AND 7 THEN '4-7天'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 8 AND 14 THEN '8-14天'
+                    ELSE '超過14天'
+                END as category,
+                COUNT(*) as count
+            ")
+            ->groupByRaw("
+                CASE
+                    WHEN DATEDIFF(gr.received_date, po.order_date) <= 0 THEN '提前到貨'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 1 AND 3 THEN '1-3天'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 4 AND 7 THEN '4-7天'
+                    WHEN DATEDIFF(gr.received_date, po.order_date) BETWEEN 8 AND 14 THEN '8-14天'
+                    ELSE '超過14天'
+                END
+            ")
+            ->get();
+
+        return [
+            'vendor_delivery' => $vendorDelivery,
+            'delay_distribution' => $delayDistribution,
+        ];
+    }
+
+    /**
+     * 進貨數量分析
+     */
+    public function getQuantityAnalysis(array $filters): array
+    {
+        $dateFrom = $filters['date_from'] ?? Carbon::now()->subMonths(6)->format('Y-m-d');
+        $dateTo = $filters['date_to'] ?? Carbon::now()->format('Y-m-d');
+        $vendorId = $filters['vendor_id'] ?? null;
+        $warehouseId = $filters['warehouse_id'] ?? null;
+
+        $baseQuery = DB::table('goods_receipts as gr')
+            ->join('goods_receipt_items as gri', 'gri.goods_receipt_id', '=', 'gr.id')
+            ->where('gr.status', 'completed')
+            ->whereNull('gr.deleted_at')
+            ->whereBetween('gr.received_date', [$dateFrom, $dateTo]);
+        if ($vendorId) $baseQuery->where('gr.vendor_id', $vendorId);
+        if ($warehouseId) $baseQuery->where('gr.warehouse_id', $warehouseId);
+
+        // 月度進貨量趨勢
+        $monthlyTrend = (clone $baseQuery)
+            ->selectRaw("
+                DATE_FORMAT(gr.received_date, '%Y-%m') as month,
+                ROUND(SUM(gri.quantity_received), 2) as total_quantity,
+                ROUND(SUM(gri.total_amount), 2) as total_amount,
+                COUNT(DISTINCT gr.id) as receipt_count
+            ")
+            ->groupByRaw("DATE_FORMAT(gr.received_date, '%Y-%m')")
+            ->orderBy('month', 'asc')
+            ->get();
+
+        // 廠商佔比（按進貨金額）
+        $vendorShare = (clone $baseQuery)
+            ->join('vendors', 'vendors.id', '=', 'gr.vendor_id')
+            ->selectRaw('
+                gr.vendor_id,
+                vendors.name as vendor_name,
+                ROUND(SUM(gri.total_amount), 2) as total_amount,
+                ROUND(SUM(gri.quantity_received), 2) as total_quantity
+            ')
+            ->groupBy('gr.vendor_id', 'vendors.name')
+            ->orderByDesc('total_amount')
+            ->limit(10)
+            ->get();
+
+        // 商品進貨排行 Top 10
+        $productRanking = (clone $baseQuery)
+            ->join('products', 'products.id', '=', 'gri.product_id')
+            ->selectRaw('
+                gri.product_id,
+                products.name as product_name,
+                products.code as product_code,
+                ROUND(SUM(gri.quantity_received), 2) as total_quantity,
+                ROUND(SUM(gri.total_amount), 2) as total_amount
+            ')
+            ->groupBy('gri.product_id', 'products.name', 'products.code')
+            ->orderByDesc('total_amount')
+            ->limit(10)
+            ->get();
+
+        return [
+            'monthly_trend' => $monthlyTrend,
+            'vendor_share' => $vendorShare,
+            'product_ranking' => $productRanking,
+        ];
+    }
+
+    /**
+     * 單價趨勢分析
+     */
+    public function getPriceTrendAnalysis(array $filters): array
+    {
+        $dateFrom = $filters['date_from'] ?? Carbon::now()->subMonths(6)->format('Y-m-d');
+        $dateTo = $filters['date_to'] ?? Carbon::now()->format('Y-m-d');
+        $vendorId = $filters['vendor_id'] ?? null;
+        $warehouseId = $filters['warehouse_id'] ?? null;
+
+        $baseQuery = DB::table('goods_receipts as gr')
+            ->join('goods_receipt_items as gri', 'gri.goods_receipt_id', '=', 'gr.id')
+            ->join('products', 'products.id', '=', 'gri.product_id')
+            ->where('gr.status', 'completed')
+            ->whereNull('gr.deleted_at')
+            ->whereBetween('gr.received_date', [$dateFrom, $dateTo]);
+        if ($vendorId) $baseQuery->where('gr.vendor_id', $vendorId);
+        if ($warehouseId) $baseQuery->where('gr.warehouse_id', $warehouseId);
+
+        // 商品月平均單價趨勢（取進貨金額 Top 10 的商品）
+        $topProductIds = (clone $baseQuery)
+            ->selectRaw('gri.product_id, SUM(gri.total_amount) as total')
+            ->groupBy('gri.product_id')
+            ->orderByDesc('total')
+            ->limit(10)
+            ->pluck('product_id');
+
+        $priceTrend = [];
+        if ($topProductIds->isNotEmpty()) {
+            $priceTrend = (clone $baseQuery)
+                ->whereIn('gri.product_id', $topProductIds->toArray())
+                ->selectRaw("
+                    gri.product_id,
+                    products.name as product_name,
+                    DATE_FORMAT(gr.received_date, '%Y-%m') as month,
+                    ROUND(AVG(gri.unit_price), 2) as avg_price,
+                    ROUND(MIN(gri.unit_price), 2) as min_price,
+                    ROUND(MAX(gri.unit_price), 2) as max_price
+                ")
+                ->groupBy('gri.product_id', 'products.name', DB::raw("DATE_FORMAT(gr.received_date, '%Y-%m')"))
+                ->orderBy('month', 'asc')
+                ->get();
+        }
+
+        // 跨廠商比價（同一商品不同廠商的最近價格）
+        $vendorComparison = (clone $baseQuery)
+            ->join('vendors', 'vendors.id', '=', 'gr.vendor_id')
+            ->whereIn('gri.product_id', $topProductIds->toArray())
+            ->selectRaw('
+                gri.product_id,
+                products.name as product_name,
+                gr.vendor_id,
+                vendors.name as vendor_name,
+                ROUND(AVG(gri.unit_price), 2) as avg_price,
+                ROUND(MIN(gri.unit_price), 2) as min_price,
+                ROUND(MAX(gri.unit_price), 2) as max_price,
+                COUNT(*) as purchase_count
+            ')
+            ->groupBy('gri.product_id', 'products.name', 'gr.vendor_id', 'vendors.name')
+            ->orderBy('products.name')
+            ->orderBy('avg_price')
+            ->get();
+
+        return [
+            'price_trend' => $priceTrend,
+            'vendor_comparison' => $vendorComparison,
+        ];
+    }
+}

database/seeders/PermissionSeeder.php

@@ -162,6 +162,9 @@ class PermissionSeeder extends Seeder
 
             // 銷售訂單管理 (API)
             'sales_orders.view' => '檢視',
+
+            // 採購統計分析
+            'procurement_analysis.view' => '檢視',
         ];
 
         foreach ($permissions as $name => $displayName) {
@@ -210,6 +213,7 @@ class PermissionSeeder extends Seeder
             'sales_imports.view', 'sales_imports.create', 'sales_imports.confirm', 'sales_imports.delete',
             'store_requisitions.view', 'store_requisitions.create', 'store_requisitions.edit',
             'store_requisitions.delete', 'store_requisitions.approve', 'store_requisitions.cancel',
+            'procurement_analysis.view',
         ]);
 
         // warehouse-manager 管理庫存與倉庫
@@ -236,6 +240,7 @@ class PermissionSeeder extends Seeder
             'vendors.view', 'vendors.create', 'vendors.edit',
             'inventory.view',
             'goods_receipts.view', 'goods_receipts.create',
+            'procurement_analysis.view',
         ]);
 
         // viewer 僅能查看

resources/js/Layouts/AuthenticatedLayout.tsx

@@ -255,7 +255,7 @@ export default function AuthenticatedLayout({
             id: "report-management",
             label: "報表與分析",
             icon: <BarChart3 className="h-5 w-5" />,
-            permission: ["accounting.view", "inventory_report.view"],
+            permission: ["accounting.view", "inventory_report.view", "procurement_analysis.view"],
             children: [
                 {
                     id: "accounting-report",
@@ -278,6 +278,13 @@ export default function AuthenticatedLayout({
                     route: "/inventory/analysis",
                     permission: "inventory_report.view",
                 },
+                {
+                    id: "procurement-analysis",
+                    label: "採購統計分析",
+                    icon: <ShoppingCart className="h-4 w-4" />,
+                    route: "/procurement/analysis",
+                    permission: "procurement_analysis.view",
+                },
                 {
                     id: "inventory-traceability",
                     label: "批號溯源",

resources/js/Pages/Procurement/Analysis/Index.tsx

@@ -0,0 +1,848 @@
+import { useState, useMemo } from "react";
+import { Head, router } from "@inertiajs/react";
+import AuthenticatedLayout from "@/Layouts/AuthenticatedLayout";
+import { Button } from "@/Components/ui/button";
+import { Input } from "@/Components/ui/input";
+import { Label } from "@/Components/ui/label";
+import { SearchableSelect } from "@/Components/ui/searchable-select";
+import {
+    BarChart3,
+    TrendingUp,
+    DollarSign,
+    Truck,
+    Clock,
+    CheckCircle,
+    Package,
+    Filter,
+    RotateCcw,
+    ShoppingCart,
+    Info,
+} from "lucide-react";
+import {
+    Tooltip,
+    TooltipContent,
+    TooltipProvider,
+    TooltipTrigger,
+} from "@/Components/ui/tooltip";
+import {
+    BarChart,
+    Bar,
+    LineChart,
+    Line,
+    PieChart,
+    Pie,
+    Cell,
+    XAxis,
+    YAxis,
+    CartesianGrid,
+    Tooltip as RechartsTooltip,
+    ResponsiveContainer,
+    Legend,
+    AreaChart,
+    Area,
+} from "recharts";
+
+// ===== 型別定義 =====
+interface KPIs {
+    total_amount: number;
+    total_orders: number;
+    total_receipts: number;
+    avg_delivery_days: number;
+    on_time_rate: number;
+}
+
+interface VendorDelivery {
+    vendor_id: number;
+    vendor_name: string;
+    total_count: number;
+    avg_days: number;
+    min_days: number;
+    max_days: number;
+    on_time_count: number;
+    on_time_rate: number;
+}
+
+interface DelayDistribution {
+    category: string;
+    count: number;
+}
+
+interface MonthlyTrend {
+    month: string;
+    total_quantity: number;
+    total_amount: number;
+    receipt_count: number;
+}
+
+interface VendorShare {
+    vendor_id: number;
+    vendor_name: string;
+    total_amount: number;
+    total_quantity: number;
+}
+
+interface ProductRanking {
+    product_id: number;
+    product_name: string;
+    product_code: string;
+    total_quantity: number;
+    total_amount: number;
+}
+
+interface PriceTrendItem {
+    product_id: number;
+    product_name: string;
+    month: string;
+    avg_price: number;
+    min_price: number;
+    max_price: number;
+}
+
+interface VendorComparison {
+    product_id: number;
+    product_name: string;
+    vendor_id: number;
+    vendor_name: string;
+    avg_price: number;
+    min_price: number;
+    max_price: number;
+    purchase_count: number;
+}
+
+interface FilterOption {
+    id: number;
+    name: string;
+    code?: string;
+}
+
+interface Props {
+    kpis: KPIs;
+    deliveryAnalysis: {
+        vendor_delivery: VendorDelivery[];
+        delay_distribution: DelayDistribution[];
+    };
+    quantityAnalysis: {
+        monthly_trend: MonthlyTrend[];
+        vendor_share: VendorShare[];
+        product_ranking: ProductRanking[];
+    };
+    priceTrendAnalysis: {
+        price_trend: PriceTrendItem[];
+        vendor_comparison: VendorComparison[];
+    };
+    vendors: FilterOption[];
+    warehouses: FilterOption[];
+    filters: {
+        date_from?: string;
+        date_to?: string;
+        vendor_id?: string;
+        warehouse_id?: string;
+    };
+}
+
+// 圓餅圖色彩
+const PIE_COLORS = [
+    "#0ea5e9", "#8b5cf6", "#10b981", "#f59e0b", "#ef4444",
+    "#ec4899", "#06b6d4", "#84cc16", "#f97316", "#6366f1",
+];
+
+// Tab 定義
+const TABS = [
+    { key: "delivery", label: "供貨時效", icon: <Truck className="h-4 w-4" /> },
+    { key: "quantity", label: "數量分析", icon: <Package className="h-4 w-4" /> },
+    { key: "price", label: "價格趨勢", icon: <TrendingUp className="h-4 w-4" /> },
+] as const;
+
+type TabKey = (typeof TABS)[number]["key"];
+
+export default function ProcurementAnalysisIndex({
+    kpis,
+    deliveryAnalysis,
+    quantityAnalysis,
+    priceTrendAnalysis,
+    vendors,
+    warehouses,
+    filters,
+}: Props) {
+    const [activeTab, setActiveTab] = useState<TabKey>("delivery");
+    const [localFilters, setLocalFilters] = useState({
+        date_from: filters.date_from || "",
+        date_to: filters.date_to || "",
+        vendor_id: filters.vendor_id || "",
+        warehouse_id: filters.warehouse_id || "",
+    });
+
+    const handleApplyFilters = () => {
+        const params: Record<string, string> = {};
+        Object.entries(localFilters).forEach(([key, value]) => {
+            if (value) params[key] = value;
+        });
+        router.get(route("procurement.analysis.index"), params, {
+            preserveState: true,
+            preserveScroll: true,
+        });
+    };
+
+    const handleClearFilters = () => {
+        setLocalFilters({ date_from: "", date_to: "", vendor_id: "", warehouse_id: "" });
+        router.get(route("procurement.analysis.index"), {}, {
+            preserveState: true,
+            preserveScroll: true,
+        });
+    };
+
+    // ===== KPI 卡片資料 =====
+    const kpiCards = [
+        {
+            label: "採購總金額",
+            tooltip: "期間內所有非草稿、非取消的採購單總金額",
+            value: `NT$ ${Math.round(kpis.total_amount).toLocaleString()}`,
+            description: `共 ${kpis.total_orders} 筆採購單`,
+            icon: <DollarSign className="h-5 w-5" />,
+            color: "text-blue-600",
+            bgColor: "bg-blue-50",
+            borderColor: "border-blue-100",
+        },
+        {
+            label: "進貨筆數",
+            tooltip: "期間內狀態為「已完成」的進貨單數量",
+            value: kpis.total_receipts,
+            description: "已完成進貨單",
+            icon: <Package className="h-5 w-5" />,
+            color: "text-emerald-600",
+            bgColor: "bg-emerald-50",
+            borderColor: "border-emerald-100",
+        },
+        {
+            label: "平均交期",
+            tooltip: "真實進貨日期減去採購單日期的平均天數",
+            value: `${kpis.avg_delivery_days} 天`,
+            description: "下單到到貨平均天數",
+            icon: <Clock className="h-5 w-5" />,
+            color: "text-amber-600",
+            bgColor: "bg-amber-50",
+            borderColor: "border-amber-100",
+        },
+        {
+            label: "準時到貨率",
+            tooltip: "進貨單真實進貨日期早於或等於採購單預計到貨日的比例",
+            value: `${kpis.on_time_rate}%`,
+            description: "於預計交期內到貨",
+            icon: <CheckCircle className="h-5 w-5" />,
+            color: kpis.on_time_rate >= 80 ? "text-emerald-600" : "text-red-600",
+            bgColor: kpis.on_time_rate >= 80 ? "bg-emerald-50" : "bg-red-50",
+            borderColor: kpis.on_time_rate >= 80 ? "border-emerald-100" : "border-red-100",
+        },
+    ];
+
+    return (
+        <AuthenticatedLayout
+            breadcrumbs={[
+                { label: "報表與分析", href: "#" },
+                { label: "採購統計分析", href: route("procurement.analysis.index"), isPage: true },
+            ]}
+        >
+            <Head title="採購統計分析" />
+
+            <div className="container mx-auto p-6 max-w-7xl space-y-6">
+                {/* 頁面標題 */}
+                <div>
+                    <h1 className="text-2xl font-bold text-grey-0 flex items-center gap-2">
+                        <BarChart3 className="h-6 w-6 text-primary-main" />
+                        採購統計分析
+                    </h1>
+                    <p className="text-gray-500 mt-1">
+                        分析廠商供貨時效、進貨數量、單價趨勢，支援採購決策與成本控制
+                    </p>
+                </div>
+
+                {/* 篩選列 */}
+                <div className="bg-white rounded-xl shadow-sm border border-grey-4 p-5">
+                    <div className="grid grid-cols-1 md:grid-cols-12 gap-4 items-end">
+                        <div className="md:col-span-2 space-y-1">
+                            <Label className="text-xs text-grey-2 font-medium">起始日期</Label>
+                            <Input
+                                type="date"
+                                value={localFilters.date_from}
+                                onChange={(e) => setLocalFilters((f) => ({ ...f, date_from: e.target.value }))}
+                                className="h-9 bg-white"
+                            />
+                        </div>
+                        <div className="md:col-span-2 space-y-1">
+                            <Label className="text-xs text-grey-2 font-medium">結束日期</Label>
+                            <Input
+                                type="date"
+                                value={localFilters.date_to}
+                                onChange={(e) => setLocalFilters((f) => ({ ...f, date_to: e.target.value }))}
+                                className="h-9 bg-white"
+                            />
+                        </div>
+                        <div className="md:col-span-3 space-y-1">
+                            <Label className="text-xs text-grey-2 font-medium">廠商</Label>
+                            <SearchableSelect
+                                value={localFilters.vendor_id || "all"}
+                                onValueChange={(v) => setLocalFilters((f) => ({ ...f, vendor_id: v === "all" ? "" : v }))}
+                                options={[{ label: "全部廠商", value: "all" }, ...vendors.map((v) => ({ label: v.name, value: v.id.toString() }))]}
+                                className="w-full h-9"
+                                placeholder="選擇廠商..."
+                            />
+                        </div>
+                        <div className="md:col-span-2 space-y-1">
+                            <Label className="text-xs text-grey-2 font-medium">倉庫</Label>
+                            <SearchableSelect
+                                value={localFilters.warehouse_id || "all"}
+                                onValueChange={(v) => setLocalFilters((f) => ({ ...f, warehouse_id: v === "all" ? "" : v }))}
+                                options={[{ label: "全部倉庫", value: "all" }, ...warehouses.map((w) => ({ label: w.name, value: w.id.toString() }))]}
+                                className="w-full h-9"
+                                placeholder="選擇倉庫..."
+                            />
+                        </div>
+                        <div className="md:col-span-3 flex items-center gap-2">
+                            <Button
+                                variant="outline"
+                                onClick={handleClearFilters}
+                                className="flex-1 items-center gap-2 button-outlined-primary h-9"
+                            >
+                                <RotateCcw className="h-4 w-4" />
+                                重置
+                            </Button>
+                            <Button
+                                onClick={handleApplyFilters}
+                                className="flex-1 button-filled-primary h-9 gap-2"
+                            >
+                                <Filter className="h-4 w-4" /> 查詢
+                            </Button>
+                        </div>
+                    </div>
+                </div>
+
+                {/* KPI 卡片列 */}
+                <TooltipProvider>
+                    <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4">
+                        {kpiCards.map((card) => (
+                            <div key={card.label} className={`rounded-xl border ${card.borderColor} bg-white p-5 shadow-sm`}>
+                                <div className="flex items-center justify-between mb-3">
+                                    <div className={`p-2 rounded-lg ${card.bgColor} ${card.color}`}>
+                                        {card.icon}
+                                    </div>
+                                </div>
+                                <div className="text-sm font-medium text-gray-500 mb-1 flex items-center gap-1">
+                                    {card.label}
+                                    <Tooltip>
+                                        <TooltipTrigger>
+                                            <Info className="h-3 w-3 text-gray-400 cursor-help" />
+                                        </TooltipTrigger>
+                                        <TooltipContent className="max-w-[200px] text-xs">
+                                            <p>{card.tooltip}</p>
+                                        </TooltipContent>
+                                    </Tooltip>
+                                </div>
+                                <div className="text-2xl font-bold text-gray-900 mb-1">{card.value}</div>
+                                <div className="text-xs text-gray-400">{card.description}</div>
+                            </div>
+                        ))}
+                    </div>
+                </TooltipProvider>
+
+                {/* Tab 切換 */}
+                <div className="bg-white rounded-xl border border-gray-200 shadow-sm overflow-hidden">
+                    <div className="border-b border-gray-200">
+                        <div className="flex">
+                            {TABS.map((tab) => (
+                                <button
+                                    key={tab.key}
+                                    onClick={() => setActiveTab(tab.key)}
+                                    className={`flex items-center gap-2 px-6 py-3 text-sm font-medium border-b-2 transition-colors ${activeTab === tab.key
+                                        ? "border-primary-main text-primary-main bg-primary-lightest"
+                                        : "border-transparent text-gray-500 hover:text-gray-700 hover:bg-gray-50"
+                                        }`}
+                                >
+                                    {tab.icon}
+                                    {tab.label}
+                                </button>
+                            ))}
+                        </div>
+                    </div>
+
+                    <div className="p-6">
+                        {activeTab === "delivery" && (
+                            <DeliveryTab
+                                vendorDelivery={deliveryAnalysis.vendor_delivery}
+                                delayDistribution={deliveryAnalysis.delay_distribution}
+                            />
+                        )}
+                        {activeTab === "quantity" && (
+                            <QuantityTab
+                                monthlyTrend={quantityAnalysis.monthly_trend}
+                                vendorShare={quantityAnalysis.vendor_share}
+                                productRanking={quantityAnalysis.product_ranking}
+                            />
+                        )}
+                        {activeTab === "price" && (
+                            <PriceTab
+                                priceTrend={priceTrendAnalysis.price_trend}
+                                vendorComparison={priceTrendAnalysis.vendor_comparison}
+                            />
+                        )}
+                    </div>
+                </div>
+            </div>
+        </AuthenticatedLayout>
+    );
+}
+
+// ===== Tab 1: 供貨時效 =====
+function DeliveryTab({
+    vendorDelivery,
+    delayDistribution,
+}: {
+    vendorDelivery: VendorDelivery[];
+    delayDistribution: DelayDistribution[];
+}) {
+    if (vendorDelivery.length === 0) {
+        return <EmptyState message="尚無供貨時效資料，請確認篩選條件或是否有已完成的進貨單。" />;
+    }
+
+    const parsedDelayDistribution = useMemo(() => {
+        return delayDistribution.map(d => ({ ...d, count: Number(d.count) }));
+    }, [delayDistribution]);
+
+    return (
+        <div className="space-y-6">
+            <TooltipProvider>
+                <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
+                    {/* 廠商平均交期長條圖 */}
+                    <div className="lg:col-span-2">
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <Truck className="h-4 w-4 text-blue-500" />
+                            廠商平均交期天數
+                            <Tooltip>
+                                <TooltipTrigger>
+                                    <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                                </TooltipTrigger>
+                                <TooltipContent className="max-w-[250px] text-xs">
+                                    <p>將進貨資料依廠商分組，計算「進貨日 - 採購日」的平均天數、極端值與準時率。預設由快到慢排序。</p>
+                                </TooltipContent>
+                            </Tooltip>
+                        </h3>
+                        <div className="h-[350px]">
+                            <ResponsiveContainer width="100%" height="100%">
+                                <BarChart data={vendorDelivery} layout="vertical" margin={{ top: 5, right: 30, left: 20, bottom: 5 }}>
+                                    <CartesianGrid strokeDasharray="3 3" horizontal={false} />
+                                    <XAxis type="number" unit=" 天" />
+                                    <YAxis dataKey="vendor_name" type="category" width={120} tick={{ fontSize: 12 }} />
+                                    <RechartsTooltip
+                                        formatter={(value: number, name: string) => {
+                                            const labels: Record<string, string> = {
+                                                avg_days: "平均交期",
+                                                min_days: "最短",
+                                                max_days: "最長",
+                                            };
+                                            return [`${value} 天`, labels[name] || name];
+                                        }}
+                                    />
+                                    <Legend formatter={(v) => ({ avg_days: "平均", min_days: "最短", max_days: "最長" }[v] || v)} />
+                                    <Bar dataKey="avg_days" fill="#3b82f6" radius={[0, 4, 4, 0]} />
+                                    <Bar dataKey="min_days" fill="#10b981" radius={[0, 4, 4, 0]} />
+                                    <Bar dataKey="max_days" fill="#f59e0b" radius={[0, 4, 4, 0]} />
+                                </BarChart>
+                            </ResponsiveContainer>
+                        </div>
+                    </div>
+
+                    {/* 交期分佈圓餅圖 */}
+                    <div>
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <Clock className="h-4 w-4 text-amber-500" />
+                            交期分佈
+                        </h3>
+                        <div className="h-[350px]">
+                            <ResponsiveContainer width="100%" height="100%">
+                                <PieChart>
+                                    <Pie
+                                        data={parsedDelayDistribution}
+                                        dataKey="count"
+                                        nameKey="category"
+                                        cx="50%"
+                                        cy="50%"
+                                        outerRadius={100}
+                                        label={false}
+                                        labelLine={false}
+                                    >
+                                        {parsedDelayDistribution.map((_, index) => (
+                                            <Cell key={`cell-${index}`} fill={PIE_COLORS[index % PIE_COLORS.length]} />
+                                        ))}
+                                    </Pie>
+                                    <RechartsTooltip
+                                        formatter={(value: number) => {
+                                            const total = parsedDelayDistribution.reduce((sum, item) => sum + item.count, 0);
+                                            const percent = total > 0 ? ((value / total) * 100).toFixed(0) : 0;
+                                            return [`${value} 筆 (${percent}%)`, "數量"];
+                                        }}
+                                    />
+                                    <Legend />
+                                </PieChart>
+                            </ResponsiveContainer>
+                        </div>
+                    </div>
+                </div>
+
+                {/* 廠商準時率排行表格 */}
+                <div>
+                    <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                        <CheckCircle className="h-4 w-4 text-emerald-500" />
+                        廠商準時到貨排行
+                        <Tooltip>
+                            <TooltipTrigger>
+                                <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                            </TooltipTrigger>
+                            <TooltipContent className="max-w-[250px] text-xs">
+                                <p>準時率 = (該廠商準時進貨筆數 / 總進貨筆數) * 100%</p>
+                            </TooltipContent>
+                        </Tooltip>
+                    </h3>
+                    <div className="border border-gray-200 rounded-lg overflow-hidden">
+                        <table className="w-full">
+                            <thead className="bg-gray-50">
+                                <tr>
+                                    <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">排名</th>
+                                    <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">廠商</th>
+                                    <th className="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">進貨次數</th>
+                                    <th className="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">平均交期</th>
+                                    <th className="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">最短</th>
+                                    <th className="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">最長</th>
+                                    <th className="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">準時率</th>
+                                </tr>
+                            </thead>
+                            <tbody className="divide-y divide-gray-100">
+                                {vendorDelivery.map((v, idx) => (
+                                    <tr key={v.vendor_id} className="hover:bg-gray-50">
+                                        <td className="px-4 py-3 text-sm font-medium text-gray-900">{idx + 1}</td>
+                                        <td className="px-4 py-3 text-sm text-gray-900">{v.vendor_name}</td>
+                                        <td className="px-4 py-3 text-sm text-center text-gray-600">{v.total_count}</td>
+                                        <td className="px-4 py-3 text-sm text-center font-medium text-blue-600">{v.avg_days} 天</td>
+                                        <td className="px-4 py-3 text-sm text-center text-emerald-600">{v.min_days} 天</td>
+                                        <td className="px-4 py-3 text-sm text-center text-amber-600">{v.max_days} 天</td>
+                                        <td className="px-4 py-3 text-center">
+                                            <span className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${v.on_time_rate >= 80 ? "bg-emerald-100 text-emerald-800" :
+                                                v.on_time_rate >= 60 ? "bg-amber-100 text-amber-800" :
+                                                    "bg-red-100 text-red-800"
+                                                }`}>
+                                                {v.on_time_rate}%
+                                            </span>
+                                        </td>
+                                    </tr>
+                                ))}
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+            </TooltipProvider>
+        </div>
+    );
+}
+
+// ===== Tab 2: 數量分析 =====
+function QuantityTab({
+    monthlyTrend,
+    vendorShare,
+    productRanking,
+}: {
+    monthlyTrend: MonthlyTrend[];
+    vendorShare: VendorShare[];
+    productRanking: ProductRanking[];
+}) {
+    if (monthlyTrend.length === 0 && vendorShare.length === 0) {
+        return <EmptyState message="尚無進貨數量資料，請確認篩選條件。" />;
+    }
+
+    const parsedVendorShare = useMemo(() => {
+        return vendorShare.map(d => ({ ...d, total_amount: Number(d.total_amount) }));
+    }, [vendorShare]);
+
+    return (
+        <div className="space-y-6">
+            <TooltipProvider>
+                {/* 月度趨勢 */}
+                <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
+                    <div className="lg:col-span-2">
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <TrendingUp className="h-4 w-4 text-blue-500" />
+                            月度進貨金額趨勢
+                            <Tooltip>
+                                <TooltipTrigger>
+                                    <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                                </TooltipTrigger>
+                                <TooltipContent className="max-w-[250px] text-xs">
+                                    <p>將所有已完成的進貨單依月份分組，加總總進貨數量與金額。</p>
+                                </TooltipContent>
+                            </Tooltip>
+                        </h3>
+                        <div className="h-[350px]">
+                            <ResponsiveContainer width="100%" height="100%">
+                                <AreaChart data={monthlyTrend} margin={{ top: 10, right: 30, left: 0, bottom: 0 }}>
+                                    <defs>
+                                        <linearGradient id="colorAmount" x1="0" y1="0" x2="0" y2="1">
+                                            <stop offset="5%" stopColor="#3b82f6" stopOpacity={0.8} />
+                                            <stop offset="95%" stopColor="#3b82f6" stopOpacity={0} />
+                                        </linearGradient>
+                                    </defs>
+                                    <XAxis dataKey="month" tick={{ fontSize: 12 }} />
+                                    <YAxis tickFormatter={(v) => `$${(v / 1000).toFixed(0)}k`} tick={{ fontSize: 12 }} />
+                                    <CartesianGrid strokeDasharray="3 3" vertical={false} />
+                                    <RechartsTooltip
+                                        formatter={(value: number, name: string) => {
+                                            if (name === "total_amount") return [`NT$ ${value.toLocaleString()}`, "進貨金額"];
+                                            if (name === "receipt_count") return [`${value} 筆`, "進貨筆數"];
+                                            return [value, name];
+                                        }}
+                                    />
+                                    <Area type="monotone" dataKey="total_amount" stroke="#3b82f6" fillOpacity={1} fill="url(#colorAmount)" />
+                                </AreaChart>
+                            </ResponsiveContainer>
+                        </div>
+                    </div>
+
+                    {/* 廠商佔比 */}
+                    <div>
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <ShoppingCart className="h-4 w-4 text-purple-500" />
+                            廠商進貨金額佔比
+                        </h3>
+                        <div className="h-[350px]">
+                            <ResponsiveContainer width="100%" height="100%">
+                                <PieChart>
+                                    <Pie
+                                        data={parsedVendorShare}
+                                        dataKey="total_amount"
+                                        nameKey="vendor_name"
+                                        cx="50%"
+                                        cy="50%"
+                                        outerRadius={100}
+                                        label={false}
+                                        labelLine={false}
+                                    >
+                                        {parsedVendorShare.map((_, index) => (
+                                            <Cell key={`cell-${index}`} fill={PIE_COLORS[index % PIE_COLORS.length]} />
+                                        ))}
+                                    </Pie>
+                                    <RechartsTooltip
+                                        formatter={(value: number) => {
+                                            const total = parsedVendorShare.reduce((sum, item) => sum + item.total_amount, 0);
+                                            const percent = total > 0 ? ((value / total) * 100).toFixed(0) : 0;
+                                            return [`NT$ ${value.toLocaleString()} (${percent}%)`, "金額"];
+                                        }}
+                                    />
+                                    <Legend formatter={(value) => value.length > 6 ? value.slice(0, 6) + '…' : value} />
+                                </PieChart>
+                            </ResponsiveContainer>
+                        </div>
+                    </div>
+                </div>
+
+                {/* 商品進貨排行 */}
+                <div>
+                    <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                        <Package className="h-4 w-4 text-emerald-500" />
+                        商品進貨排行 Top 10
+                        <Tooltip>
+                            <TooltipTrigger>
+                                <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                            </TooltipTrigger>
+                            <TooltipContent className="max-w-[250px] text-xs">
+                                <p>依據商品分組，加總總進貨量與金額，並依金額高低反向排序出前 10 名。</p>
+                            </TooltipContent>
+                        </Tooltip>
+                    </h3>
+                    <div className="border border-gray-200 rounded-lg overflow-hidden">
+                        <table className="w-full">
+                            <thead className="bg-gray-50">
+                                <tr>
+                                    <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">排名</th>
+                                    <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">商品名稱</th>
+                                    <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">商品編號</th>
+                                    <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">進貨數量</th>
+                                    <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">進貨金額</th>
+                                </tr>
+                            </thead>
+                            <tbody className="divide-y divide-gray-100">
+                                {productRanking.map((p, idx) => (
+                                    <tr key={p.product_id} className="hover:bg-gray-50">
+                                        <td className="px-4 py-3 text-sm font-medium text-gray-900">{idx + 1}</td>
+                                        <td className="px-4 py-3 text-sm text-gray-900">{p.product_name}</td>
+                                        <td className="px-4 py-3 text-sm text-gray-500">{p.product_code}</td>
+                                        <td className="px-4 py-3 text-sm text-right text-gray-700">{Number(p.total_quantity).toLocaleString()}</td>
+                                        <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">NT$ {Number(p.total_amount).toLocaleString()}</td>
+                                    </tr>
+                                ))}
+                            </tbody>
+                        </table>
+                        {productRanking.length === 0 && (
+                            <div className="p-8 text-center text-gray-400 text-sm">無符合條件的資料</div>
+                        )}
+                    </div>
+                </div>
+            </TooltipProvider>
+        </div>
+    );
+}
+
+// ===== Tab 3: 價格趨勢 =====
+function PriceTab({
+    priceTrend,
+    vendorComparison,
+}: {
+    priceTrend: PriceTrendItem[];
+    vendorComparison: VendorComparison[];
+}) {
+    if (priceTrend.length === 0 && vendorComparison.length === 0) {
+        return <EmptyState message="尚無單價趨勢資料，請確認篩選條件。" />;
+    }
+
+    // 將 priceTrend 轉為折線圖資料（每個月為 X 軸，每個商品為一條線）
+    const productNames = [...new Set(priceTrend.map((p) => p.product_name))];
+    const months = [...new Set(priceTrend.map((p) => p.month))].sort();
+
+    const chartData = months.map((month) => {
+        const row: Record<string, string | number> = { month };
+        productNames.forEach((name) => {
+            const item = priceTrend.find((p) => p.month === month && p.product_name === name);
+            row[name] = item ? item.avg_price : 0;
+        });
+        return row;
+    });
+
+    // 將 vendorComparison 按商品分組
+    const comparisonGrouped = vendorComparison.reduce<Record<string, VendorComparison[]>>((acc, item) => {
+        if (!acc[item.product_name]) acc[item.product_name] = [];
+        acc[item.product_name].push(item);
+        return acc;
+    }, {});
+
+    return (
+        <div className="space-y-6">
+            <TooltipProvider>
+                {/* 商品單價趨勢折線圖 */}
+                {chartData.length > 0 && (
+                    <div>
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <TrendingUp className="h-4 w-4 text-blue-500" />
+                            商品月均單價趨勢（Top 10 商品）
+                            <Tooltip>
+                                <TooltipTrigger>
+                                    <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                                </TooltipTrigger>
+                                <TooltipContent className="max-w-[250px] text-xs">
+                                    <p>先從期間內找出「進貨總金額最高的前 10 項商品」作為追蹤目標，計算它們每月的平均進貨單價繪製成折線圖。</p>
+                                </TooltipContent>
+                            </Tooltip>
+                        </h3>
+                        <div className="h-[400px]">
+                            <ResponsiveContainer width="100%" height="100%">
+                                <LineChart data={chartData} margin={{ top: 10, right: 30, left: 0, bottom: 0 }}>
+                                    <CartesianGrid strokeDasharray="3 3" vertical={false} />
+                                    <XAxis dataKey="month" tick={{ fontSize: 12 }} />
+                                    <YAxis tickFormatter={(v) => `$${v}`} tick={{ fontSize: 12 }} />
+                                    <RechartsTooltip
+                                        formatter={(value: number, name: string) => [
+                                            `NT$ ${value.toLocaleString()}`, name
+                                        ]}
+                                    />
+                                    <Legend wrapperStyle={{ fontSize: 12 }} />
+                                    {productNames.slice(0, 8).map((name, idx) => (
+                                        <Line
+                                            key={name}
+                                            type="monotone"
+                                            dataKey={name}
+                                            stroke={PIE_COLORS[idx % PIE_COLORS.length]}
+                                            strokeWidth={2}
+                                            dot={{ r: 3 }}
+                                            activeDot={{ r: 5 }}
+                                        />
+                                    ))}
+                                </LineChart>
+                            </ResponsiveContainer>
+                        </div>
+                    </div>
+                )}
+
+                {/* 跨廠商比價表格 */}
+                {Object.keys(comparisonGrouped).length > 0 && (
+                    <div>
+                        <h3 className="text-sm font-semibold text-gray-700 mb-4 flex items-center gap-2">
+                            <DollarSign className="h-4 w-4 text-amber-500" />
+                            跨廠商比價分析
+                            <Tooltip>
+                                <TooltipTrigger>
+                                    <Info className="h-3.5 w-3.5 text-gray-400 cursor-help" />
+                                </TooltipTrigger>
+                                <TooltipContent className="max-w-[250px] text-xs">
+                                    <p>以進貨金額最高的前 10項商品為基準，列出各廠商過去期間的平均、最高、最低進貨單價以供比價，最低價將會標記「最優」。</p>
+                                </TooltipContent>
+                            </Tooltip>
+                        </h3>
+                        <div className="space-y-4">
+                            {Object.entries(comparisonGrouped).map(([productName, items]) => (
+                                <div key={productName} className="border border-gray-200 rounded-lg overflow-hidden">
+                                    <div className="px-4 py-2 bg-gray-50 border-b border-gray-200">
+                                        <span className="text-sm font-semibold text-gray-700">{productName}</span>
+                                    </div>
+                                    <table className="w-full">
+                                        <thead>
+                                            <tr className="bg-gray-50/50">
+                                                <th className="px-4 py-2 text-left text-xs font-medium text-gray-500">廠商</th>
+                                                <th className="px-4 py-2 text-right text-xs font-medium text-gray-500">平均單價</th>
+                                                <th className="px-4 py-2 text-right text-xs font-medium text-gray-500">最低價</th>
+                                                <th className="px-4 py-2 text-right text-xs font-medium text-gray-500">最高價</th>
+                                                <th className="px-4 py-2 text-center text-xs font-medium text-gray-500">交易次數</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody className="divide-y divide-gray-100">
+                                            {items.map((item, idx) => {
+                                                const isLowest = item.avg_price === Math.min(...items.map((i) => i.avg_price));
+                                                return (
+                                                    <tr key={item.vendor_id} className={`hover:bg-gray-50 ${isLowest ? "bg-emerald-50/50" : ""}`}>
+                                                        <td className="px-4 py-2 text-sm text-gray-900">
+                                                            {item.vendor_name}
+                                                            {isLowest && (
+                                                                <span className="ml-2 inline-flex items-center px-1.5 py-0.5 rounded text-xs font-medium bg-emerald-100 text-emerald-700">
+                                                                    最優
+                                                                </span>
+                                                            )}
+                                                        </td>
+                                                        <td className={`px-4 py-2 text-sm text-right font-medium ${isLowest ? "text-emerald-600" : "text-gray-700"}`}>
+                                                            NT$ {item.avg_price.toLocaleString()}
+                                                        </td>
+                                                        <td className="px-4 py-2 text-sm text-right text-gray-600">
+                                                            NT$ {item.min_price.toLocaleString()}
+                                                        </td>
+                                                        <td className="px-4 py-2 text-sm text-right text-gray-600">
+                                                            NT$ {item.max_price.toLocaleString()}
+                                                        </td>
+                                                        <td className="px-4 py-2 text-sm text-center text-gray-600">
+                                                            {item.purchase_count}
+                                                        </td>
+                                                    </tr>
+                                                );
+                                            })}
+                                        </tbody>
+                                    </table>
+                                </div>
+                            ))}
+                        </div>
+                    </div>
+                )}
+            </TooltipProvider>
+        </div>
+    );
+}
+
+// ===== 空狀態 =====
+function EmptyState({ message }: { message: string }) {
+    return (
+        <div className="flex flex-col items-center justify-center py-16 text-gray-400">
+            <BarChart3 className="h-12 w-12 mb-4 text-gray-300" />
+            <p className="text-sm">{message}</p>
+        </div>
+    );
+}

resources/views/docs/api.blade.php

@@ -57,9 +57,9 @@
                     prose-headings:scroll-mt-20 
                     prose-h1:text-4xl prose-h1:font-extrabold prose-h1:tracking-tight
                     prose-pre:p-6 prose-pre:text-sm
-                    prose-table:border prose-table:rounded-xl prose-table:overflow-hidden
+                    prose-table:border prose-table:border-slate-300 prose-table:rounded-xl prose-table:overflow-hidden
-                    prose-th:bg-slate-100 prose-th:p-4
+                    prose-th:bg-slate-100 prose-th:p-4 prose-th:border prose-th:border-slate-300 prose-th:text-left prose-th:font-semibold
-                    prose-td:p-4 prose-td:border-t prose-td:border-slate-100">
+                    prose-td:p-4 prose-td:border prose-td:border-slate-200">
                     {!! $content !!}
                 </article>