(대표님, 최겸) rfqLast, bidding, prequote

22 files changed, 2818 insertions, 1545 deletions

diff --git a/lib/bidding/detail/service.ts b/lib/bidding/detail/service.ts
index 7c7ae498..956c1798 100644
--- a/lib/bidding/detail/service.ts
+++ b/lib/bidding/detail/service.ts
@@ -4,43 +4,50 @@ import db from '@/db/db'
 import { biddings, prItemsForBidding, biddingDocuments, biddingCompanies, vendors, companyPrItemBids, companyConditionResponses, vendorSelectionResults, BiddingListItem, biddingConditions, priceAdjustmentForms } from '@/db/schema'
 import { specificationMeetings } from '@/db/schema/bidding'
 import { eq, and, sql, desc, ne } from 'drizzle-orm'
-import { revalidatePath } from 'next/cache'
+import { revalidatePath, revalidateTag } from 'next/cache'
+import { unstable_cache } from "@/lib/unstable-cache";
+import { sendEmail } from '@/lib/mail/sendEmail'
+import { saveFile } from '@/lib/file-stroage'
 
 // 데이터 조회 함수들
 export interface BiddingDetailData {
   bidding: Awaited<ReturnType<typeof getBiddingById>>
   quotationDetails: QuotationDetails | null
   quotationVendors: QuotationVendor[]
-  biddingCompanies: Awaited<ReturnType<typeof getBiddingCompaniesData>>
   prItems: Awaited<ReturnType<typeof getPRItemsForBidding>>
 }
 
 // getBiddingById 함수 임포트 (기존 함수 재사용)
 import { getBiddingById, getPRDetailsAction } from '@/lib/bidding/service'
 
-// Promise.all을 사용하여 모든 데이터를 병렬로 조회
+// Promise.all을 사용하여 모든 데이터를 병렬로 조회 (캐시 적용)
 export async function getBiddingDetailData(biddingId: number): Promise<BiddingDetailData> {
-  const [
-    bidding,
-    quotationDetails,
-    quotationVendors,
-    biddingCompanies,
-    prItems
-  ] = await Promise.all([
-    getBiddingById(biddingId),
-    getQuotationDetails(biddingId),
-    getQuotationVendors(biddingId),
-    getBiddingCompaniesData(biddingId),
-    getPRItemsForBidding(biddingId)
-  ])
+  return unstable_cache(
+    async () => {
+      const [
+        bidding,
+        quotationDetails,
+        quotationVendors,
+        prItems
+      ] = await Promise.all([
+        getBiddingById(biddingId),
+        getQuotationDetails(biddingId),
+        getQuotationVendors(biddingId),
+        getPRItemsForBidding(biddingId)
+      ])
 
-  return {
-    bidding,
-    quotationDetails,
-    quotationVendors,
-    biddingCompanies,
-    prItems
-  }
+      return {
+        bidding,
+        quotationDetails,
+        quotationVendors,
+        prItems
+      }
+    },
+    [`bidding-detail-data-${biddingId}`],
+    {
+      tags: [`bidding-${biddingId}`, 'bidding-detail', 'quotation-vendors', 'pr-items']
+    }
+  )()
 }
 export interface QuotationDetails {
   biddingId: number
@@ -65,18 +72,9 @@ export interface QuotationVendor {
   currency: string
   submissionDate: string // 제출일
   isWinner: boolean // 낙찰여부
-  awardRatio: number // 발주비율
+  awardRatio: number | null // 발주비율
+  isBiddingParticipated: boolean | null // 본입찰 참여여부
   status: 'pending' | 'submitted' | 'selected' | 'rejected'
-  // companyConditionResponses에서 가져온 입찰 조건들
-  paymentTermsResponse?: string // 지급조건 응답
-  taxConditionsResponse?: string // 세금조건 응답
-  incotermsResponse?: string // 운송조건 응답
-  proposedContractDeliveryDate?: string // 제안 계약납기일
-  proposedShippingPort?: string // 제안 선적지
-  proposedDestinationPort?: string // 제안 도착지
-  priceAdjustmentResponse?: boolean // 연동제 적용 응답
-  sparePartResponse?: string // 스페어파트 응답
-  additionalProposals?: string // 추가 제안사항
   documents: Array<{
     id: number
     fileName: string
@@ -86,8 +84,10 @@ export interface QuotationVendor {
   }>
 }
 
-// 견적 시스템에서 내정가 및 관련 정보를 가져오는 함수
+// 견적 시스템에서 내정가 및 관련 정보를 가져오는 함수 (캐시 적용)
 export async function getQuotationDetails(biddingId: number): Promise<QuotationDetails | null> {
+  return unstable_cache(
+    async () => {
   try {
     // bidding_companies 테이블에서 견적 데이터를 집계
     const quotationStats = await db
@@ -136,6 +136,12 @@ export async function getQuotationDetails(biddingId: number): Promise<QuotationD
     console.error('Failed to get quotation details:', error)
     return null
   }
+    },
+    [`quotation-details-${biddingId}`],
+    {
+      tags: [`bidding-${biddingId}`, 'quotation-details']
+    }
+  )()
 }
 
 // bidding_companies 테이블을 메인으로 vendors 테이블을 조인하여 협력업체 정보 조회
@@ -166,8 +172,14 @@ export async function getBiddingCompaniesData(biddingId: number) {
       })
       .from(biddingCompanies)
       .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
-      .where(eq(biddingCompanies.biddingId, biddingId))
+      .where(
+        and(
+          eq(biddingCompanies.biddingId, biddingId),
+          eq(biddingCompanies.isPreQuoteSelected, true)
+        )
+      )
       .orderBy(desc(biddingCompanies.finalQuoteAmount))
+     console.log(companies)
 
     return companies
   } catch (error) {
@@ -176,26 +188,36 @@ export async function getBiddingCompaniesData(biddingId: number) {
   }
 }
 
-// prItemsForBidding 테이블에서 품목 정보 조회
+// prItemsForBidding 테이블에서 품목 정보 조회 (캐시 적용)
 export async function getPRItemsForBidding(biddingId: number) {
-  try {
-    const items = await db
-      .select()
-      .from(prItemsForBidding)
-      .where(eq(prItemsForBidding.biddingId, biddingId))
-      .orderBy(prItemsForBidding.id)
-
-    return items
-  } catch (error) {
-    console.error('Failed to get PR items for bidding:', error)
-    return []
-  }
+  return unstable_cache(
+    async () => {
+      try {
+        const items = await db
+          .select()
+          .from(prItemsForBidding)
+          .where(eq(prItemsForBidding.biddingId, biddingId))
+          .orderBy(prItemsForBidding.id)
+
+        return items
+      } catch (error) {
+        console.error('Failed to get PR items for bidding:', error)
+        return []
+      }
+    },
+    [`pr-items-for-bidding-${biddingId}`],
+    {
+      tags: [`bidding-${biddingId}`, 'pr-items']
+    }
+  )()
 }
 
-// 견적 시스템에서 협력업체 정보를 가져오는 함수
+// 견적 시스템에서 협력업체 정보를 가져오는 함수 (캐시 적용)
 export async function getQuotationVendors(biddingId: number): Promise<QuotationVendor[]> {
+  return unstable_cache(
+    async () => {
   try {
-    // bidding_companies 테이블을 메인으로 vendors, company_condition_responses를 조인하여 협력업체 정보 조회
+    // bidding_companies 테이블을 메인으로 vendors를 조인하여 협력업체 정보 조회
     const vendorsData = await db
       .select({
         id: biddingCompanies.id,
@@ -207,32 +229,25 @@ export async function getQuotationVendors(biddingId: number): Promise<QuotationV
         contactEmail: biddingCompanies.contactEmail,
         contactPhone: biddingCompanies.contactPhone,
         quotationAmount: biddingCompanies.finalQuoteAmount,
-        currency: sql<string>`'KRW'` as currency,
+        currency: sql<string>`'KRW'`,
         submissionDate: biddingCompanies.finalQuoteSubmittedAt,
         isWinner: biddingCompanies.isWinner,
-        awardRatio: sql<number>`CASE WHEN ${biddingCompanies.isWinner} THEN 100 ELSE 0 END`,
+        // awardRatio: sql<number>`CASE WHEN ${biddingCompanies.isWinner} THEN 100 ELSE 0 END`,
+        awardRatio: biddingCompanies.awardRatio,
+        isBiddingParticipated: biddingCompanies.isBiddingParticipated,
         status: sql<string>`CASE
           WHEN ${biddingCompanies.isWinner} THEN 'selected'
           WHEN ${biddingCompanies.finalQuoteSubmittedAt} IS NOT NULL THEN 'submitted'
           WHEN ${biddingCompanies.respondedAt} IS NOT NULL THEN 'submitted'
           ELSE 'pending'
         END`,
-        // companyConditionResponses에서 입찰 조건들
-        paymentTermsResponse: companyConditionResponses.paymentTermsResponse,
-        taxConditionsResponse: companyConditionResponses.taxConditionsResponse,
-        incotermsResponse: companyConditionResponses.incotermsResponse,
-        proposedContractDeliveryDate: companyConditionResponses.proposedContractDeliveryDate,
-        proposedShippingPort: companyConditionResponses.proposedShippingPort,
-        proposedDestinationPort: companyConditionResponses.proposedDestinationPort,
-        priceAdjustmentResponse: companyConditionResponses.priceAdjustmentResponse,
-        isInitialResponse: companyConditionResponses.isInitialResponse,
-        sparePartResponse: companyConditionResponses.sparePartResponse,
-        additionalProposals: companyConditionResponses.additionalProposals,
       })
       .from(biddingCompanies)
       .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
-      .leftJoin(companyConditionResponses, eq(biddingCompanies.id, companyConditionResponses.biddingCompanyId))
-      .where(eq(biddingCompanies.biddingId, biddingId))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isPreQuoteSelected, true) // 본입찰 선정된 업체만 조회
+      ))
       .orderBy(desc(biddingCompanies.finalQuoteAmount))
 
     return vendorsData.map(vendor => ({
@@ -246,27 +261,272 @@ export async function getQuotationVendors(biddingId: number): Promise<QuotationV
       contactPhone: vendor.contactPhone || '',
       quotationAmount: Number(vendor.quotationAmount) || 0,
       currency: vendor.currency,
-      submissionDate: vendor.submissionDate ? vendor.submissionDate.toISOString().split('T')[0] : '',
+      submissionDate: vendor.submissionDate ? (vendor.submissionDate instanceof Date ? vendor.submissionDate.toISOString().split('T')[0] : String(vendor.submissionDate).split('T')[0]) : '',
       isWinner: vendor.isWinner || false,
-      awardRatio: vendor.awardRatio || 0,
+      awardRatio: vendor.awardRatio ? Number(vendor.awardRatio) : null,
+      isBiddingParticipated: vendor.isBiddingParticipated,
       status: vendor.status as 'pending' | 'submitted' | 'selected' | 'rejected',
-      // companyConditionResponses에서 입찰 조건들
-      paymentTermsResponse: vendor.paymentTermsResponse || '',
-      taxConditionsResponse: vendor.taxConditionsResponse || '',
-      incotermsResponse: vendor.incotermsResponse || '',
-      proposedContractDeliveryDate: vendor.proposedContractDeliveryDate ? (typeof vendor.proposedContractDeliveryDate === 'string' ? vendor.proposedContractDeliveryDate : vendor.proposedContractDeliveryDate.toISOString().split('T')[0]) : undefined,
-      proposedShippingPort: vendor.proposedShippingPort || '',
-      proposedDestinationPort: vendor.proposedDestinationPort || '',
-      priceAdjustmentResponse: vendor.priceAdjustmentResponse || false,
-      isInitialResponse: vendor.isInitialResponse || false,
-      sparePartResponse: vendor.sparePartResponse || '',
-      additionalProposals: vendor.additionalProposals || '',
-      documents: [] // TODO: 문서 정보 조회 로직 추가
     }))
   } catch (error) {
     console.error('Failed to get quotation vendors:', error)
     return []
   }
+    },
+    [`quotation-vendors-${biddingId}`],
+    {
+      tags: [`bidding-${biddingId}`, 'quotation-vendors']
+    }
+  )()
+}
+
+// 사전견적 데이터 조회 (내정가 산정용)
+export async function getPreQuoteData(biddingId: number) {
+  try {
+    const preQuotes = await db
+      .select({
+        id: biddingCompanies.id,
+        companyId: biddingCompanies.companyId,
+        vendorName: vendors.vendorName,
+        preQuoteAmount: biddingCompanies.preQuoteAmount,
+        submittedAt: biddingCompanies.preQuoteSubmittedAt,
+      })
+      .from(biddingCompanies)
+      .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        sql`${biddingCompanies.preQuoteAmount} IS NOT NULL AND ${biddingCompanies.preQuoteAmount} > 0`
+      ))
+      .orderBy(biddingCompanies.preQuoteAmount)
+
+    if (preQuotes.length === 0) {
+      return {
+        quotes: [],
+        lowestQuote: null,
+        highestQuote: null,
+        averageQuote: null,
+        quotationCount: 0
+      }
+    }
+
+    const amounts = preQuotes
+      .map(q => Number(q.preQuoteAmount))
+      .filter(amount => !isNaN(amount) && amount > 0)
+    
+    console.log('Pre-quote amounts:', amounts)
+    
+    if (amounts.length === 0) {
+      return {
+        quotes: preQuotes,
+        lowestQuote: null,
+        highestQuote: null,
+        averageQuote: null,
+        quotationCount: 0
+      }
+    }
+    
+    const lowestQuote = Math.min(...amounts)
+    const highestQuote = Math.max(...amounts)
+    const averageQuote = amounts.reduce((sum, amount) => sum + amount, 0) / amounts.length
+
+    console.log('Calculated quotes:', { lowestQuote, highestQuote, averageQuote })
+
+    return {
+      quotes: preQuotes,
+      lowestQuote,
+      highestQuote,
+      averageQuote,
+      quotationCount: amounts.length
+    }
+  } catch (error) {
+    console.error('Failed to get pre-quote data:', error)
+    return {
+      quotes: [],
+      lowestQuote: null,
+      highestQuote: null,
+      averageQuote: null,
+      quotationCount: 0
+    }
+  }
+}
+
+// 입찰유형별 내정가 자동 산정 로직
+export async function calculateTargetPrice(
+  biddingType: string,
+  budget: number | null,
+  lowestQuote: number | null,
+  highestQuote: number | null
+): Promise<{ targetPrice: number; criteria: string }> {
+  const results: Array<{ price: number; description: string }> = []
+  
+  // 입찰유형별 로직
+  switch (biddingType) {
+    case 'equipment':
+    case 'construction':
+    case 'service':
+    case 'lease':
+    case 'steel_stock':
+    case 'piping': {
+      // 예산가 85%, 최저견적가 85% 중 최저가 (직전실적가 95% 제외)
+      if (budget) {
+        results.push({ price: budget * 0.85, description: '예산가 85%' })
+      }
+      if (lowestQuote) {
+        results.push({ price: lowestQuote * 0.85, description: '최저견적가 85%' })
+      }
+      break
+    }
+    case 'transport': {
+      // 예산가 85%, 최저견적가 85% 중 최저가 (직전실적가 95% 제외)
+      // 만약 예산이 없을 경우 최저견적가의 70%
+      if (budget) {
+        results.push({ price: budget * 0.85, description: '예산가 85%' })
+      }
+      if (lowestQuote) {
+        if (budget) {
+          results.push({ price: lowestQuote * 0.85, description: '최저견적가 85%' })
+        } else {
+          results.push({ price: lowestQuote * 0.70, description: '최저견적가 70% (예산 없음)' })
+        }
+      }
+      break
+    }
+    case 'waste': {
+      // 예산가 85%, 최저견적가 70% 중 최저가 (직전실적가 95% 제외)
+      if (budget) {
+        results.push({ price: budget * 0.85, description: '예산가 85%' })
+      }
+      if (lowestQuote) {
+        results.push({ price: lowestQuote * 0.70, description: '최저견적가 70%' })
+      }
+      break
+    }
+    case 'sale': {
+      // 최고견적가 130% (직전실적가 105% 제외)
+      if (highestQuote) {
+        results.push({ price: highestQuote * 1.30, description: '최고견적가 130%' })
+      }
+      break
+    }
+    default: {
+      // 기본: 최저견적가 85%
+      if (lowestQuote) {
+        results.push({ price: lowestQuote * 0.85, description: '최저견적가 85%' })
+      }
+      break
+    }
+  }
+
+  if (results.length === 0) {
+    return {
+      targetPrice: 0,
+      criteria: '산정 가능한 데이터가 없습니다.'
+    }
+  }
+
+  // 매각의 경우 최고가, 나머지는 최저가
+  const prices = results.map(r => r.price).filter(p => !isNaN(p) && isFinite(p))
+  
+  if (prices.length === 0) {
+    return {
+      targetPrice: 0,
+      criteria: '유효한 가격 데이터가 없습니다.'
+    }
+  }
+  
+  const targetPrice = biddingType === 'sale' 
+    ? Math.max(...prices)
+    : Math.min(...prices)
+
+  if (!isFinite(targetPrice) || isNaN(targetPrice)) {
+    return {
+      targetPrice: 0,
+      criteria: '내정가 계산 오류가 발생했습니다.'
+    }
+  }
+
+  const selectedResult = results.find(r => r.price === targetPrice)
+  const criteria = `입찰유형: ${biddingType} - ${selectedResult?.description || ''}로 산정`
+
+  return {
+    targetPrice: Math.round(targetPrice),
+    criteria
+  }
+}
+
+// 내정가 자동 산정 및 업데이트
+export async function calculateAndUpdateTargetPrice(
+  biddingId: number,
+  userId: string
+) {
+  try {
+    // 입찰 정보 조회
+    const bidding = await getBiddingById(biddingId)
+    if (!bidding) {
+      return { success: false, error: '입찰 정보를 찾을 수 없습니다.' }
+    }
+
+    // 사전견적 데이터 조회
+    const preQuoteData = await getPreQuoteData(biddingId)
+    
+    if (preQuoteData.quotationCount === 0) {
+      return { success: false, error: '사전견적 데이터가 없습니다.' }
+    }
+
+    // 내정가 산정
+    console.log('Bidding data for calculation:', {
+      biddingType: bidding.biddingType,
+      budget: bidding.budget,
+      preQuoteData
+    })
+    
+    const { targetPrice, criteria } = await calculateTargetPrice(
+      bidding.biddingType || '',
+      bidding.budget ? Number(bidding.budget) : null,
+      preQuoteData.lowestQuote,
+      preQuoteData.highestQuote
+    )
+
+    console.log('Calculated target price:', { targetPrice, criteria })
+
+    if (!targetPrice || targetPrice <= 0 || isNaN(targetPrice)) {
+      return { success: false, error: `내정가 산정에 실패했습니다. (계산된 값: ${targetPrice})` }
+    }
+
+    // 내정가 업데이트
+    const updateResult = await updateTargetPrice(biddingId, targetPrice, criteria, userId)
+    
+    if (updateResult.success) {
+      // 내정가 산정 후 입찰 상태를 set_target_price로 변경 (received_quotation 상태에서만)
+      await db
+        .update(biddings)
+        .set({
+          status: 'set_target_price',
+          updatedAt: new Date()
+        })
+        .where(and(
+          eq(biddings.id, biddingId),
+          eq(biddings.status, 'received_quotation')
+        ))
+      
+      // 캐시 무효화
+      revalidateTag(`bidding-${biddingId}`)
+      
+      return {
+        success: true,
+        message: '내정가가 자동으로 산정되었습니다.',
+        data: {
+          targetPrice,
+          criteria,
+          preQuoteData
+        }
+      }
+    } else {
+      return updateResult
+    }
+  } catch (error) {
+    console.error('Failed to calculate and update target price:', error)
+    return { success: false, error: '내정가 자동 산정에 실패했습니다.' }
+  }
 }
 
 // 내정가 수동 업데이트 (실제 저장)
@@ -277,15 +537,25 @@ export async function updateTargetPrice(
   userId: string
 ) {
   try {
+    // 입력값 검증
+    if (!targetPrice || targetPrice <= 0 || isNaN(targetPrice)) {
+      return { success: false, error: `유효하지 않은 내정가입니다: ${targetPrice}` }
+    }
+    
+    console.log('Updating target price:', { biddingId, targetPrice, targetPriceCalculationCriteria })
+    
     await db
       .update(biddings)
       .set({
-        targetPrice: targetPrice.toString(),
+        targetPrice: Math.round(targetPrice).toString(),
         targetPriceCalculationCriteria: targetPriceCalculationCriteria,
         updatedAt: new Date()
       })
       .where(eq(biddings.id, biddingId))
 
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/${biddingId}`)
     return { success: true, message: '내정가가 성공적으로 업데이트되었습니다.' }
   } catch (error) {
@@ -294,6 +564,103 @@ export async function updateTargetPrice(
   }
 }
 
+// 본입찰용 업체 수정 (간소화 버전 - 발주비율만 UI에서 수정 가능, 견적금액/통화는 기존값 유지)
+export async function updateBiddingDetailVendor(
+  biddingCompanyId: number,
+  quotationAmount: number, // 기존값 유지용
+  currency: string, // 기존값 유지용
+  awardRatio: number, // UI에서 수정 가능
+  userId: string
+) {
+  try {
+    const result = await db.update(biddingCompanies)
+      .set({
+        finalQuoteAmount: quotationAmount.toString(),
+        awardRatio: awardRatio.toString(),
+        isWinner: awardRatio > 0,
+        updatedAt: new Date(),
+      })
+      .where(eq(biddingCompanies.id, biddingCompanyId))
+      .returning({ biddingId: biddingCompanies.biddingId })
+
+    // 캐시 무효화
+    if (result.length > 0) {
+      const biddingId = result[0].biddingId
+      revalidateTag(`bidding-${biddingId}`)
+      revalidateTag('quotation-vendors')
+      revalidateTag('quotation-details')
+      revalidatePath(`/evcp/bid/${biddingId}`)
+    }
+
+    return {
+      success: true,
+      message: '업체 정보가 성공적으로 수정되었습니다.',
+    }
+  } catch (error) {
+    console.error('Failed to update bidding detail vendor:', error)
+    return { 
+      success: false, 
+      error: error instanceof Error ? error.message : '업체 정보 수정에 실패했습니다.' 
+    }
+  }
+}
+
+// 본입찰용 업체 추가
+export async function createBiddingDetailVendor(
+  biddingId: number,
+  vendorId: number,
+  userId: string
+) {
+  try {
+    const result = await db.transaction(async (tx) => {
+      // 1. biddingCompanies 레코드 생성 (본입찰 선정 기본값 true)
+      const biddingCompanyResult = await tx.insert(biddingCompanies).values({
+        biddingId: biddingId,
+        companyId: vendorId,
+        invitationStatus: 'pending',
+        isPreQuoteSelected: true, // 본입찰 등록 기본값
+        isWinner: false,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      }).returning({ id: biddingCompanies.id })
+
+      if (biddingCompanyResult.length === 0) {
+        throw new Error('업체 추가에 실패했습니다.')
+      }
+
+      const biddingCompanyId = biddingCompanyResult[0].id
+
+      // 2. company_condition_responses 레코드 생성 (기본값)
+      await tx.insert(companyConditionResponses).values({
+        biddingCompanyId: biddingCompanyId,
+        submittedAt: new Date(),
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      })
+
+      return biddingCompanyId
+    })
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
+    revalidatePath(`/evcp/bid/${biddingId}`)
+
+    return {
+      success: true,
+      message: '업체가 성공적으로 추가되었습니다.',
+      data: { id: result }
+    }
+  } catch (error) {
+    console.error('Failed to create bidding detail vendor:', error)
+    return { 
+      success: false, 
+      error: error instanceof Error ? error.message : '업체 추가에 실패했습니다.' 
+    }
+  }
+}
+
 // 협력업체 정보 저장 - biddingCompanies와 companyConditionResponses 테이블에 레코드 생성
 export async function createQuotationVendor(input: any, userId: string) {
   try {
@@ -326,7 +693,7 @@ export async function createQuotationVendor(input: any, userId: string) {
         biddingCompanyId: biddingCompanyId,
         paymentTermsResponse: input.paymentTermsResponse || '',
         taxConditionsResponse: input.taxConditionsResponse || '',
-        proposedContractDeliveryDate: input.proposedContractDeliveryDate ? new Date(input.proposedContractDeliveryDate) : null,
+        proposedContractDeliveryDate: input.proposedContractDeliveryDate || null,
         priceAdjustmentResponse: input.priceAdjustmentResponse || false,
         incotermsResponse: input.incotermsResponse || '',
         proposedShippingPort: input.proposedShippingPort || '',
@@ -342,6 +709,10 @@ export async function createQuotationVendor(input: any, userId: string) {
       return biddingCompanyId
     })
 
+    // 캐시 무효화
+    revalidateTag(`bidding-${input.biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/[id]`)
     return {
       success: true,
@@ -390,7 +761,7 @@ export async function updateQuotationVendor(id: number, input: any, userId: stri
         if (input.paymentTermsResponse !== undefined) conditionsUpdateData.paymentTermsResponse = input.paymentTermsResponse
         if (input.taxConditionsResponse !== undefined) conditionsUpdateData.taxConditionsResponse = input.taxConditionsResponse
         if (input.incotermsResponse !== undefined) conditionsUpdateData.incotermsResponse = input.incotermsResponse
-        if (input.proposedContractDeliveryDate !== undefined) conditionsUpdateData.proposedContractDeliveryDate = input.proposedContractDeliveryDate ? new Date(input.proposedContractDeliveryDate) : null
+        if (input.proposedContractDeliveryDate !== undefined) conditionsUpdateData.proposedContractDeliveryDate = input.proposedContractDeliveryDate || null
         if (input.proposedShippingPort !== undefined) conditionsUpdateData.proposedShippingPort = input.proposedShippingPort
         if (input.proposedDestinationPort !== undefined) conditionsUpdateData.proposedDestinationPort = input.proposedDestinationPort
         if (input.priceAdjustmentResponse !== undefined) conditionsUpdateData.priceAdjustmentResponse = input.priceAdjustmentResponse
@@ -406,6 +777,9 @@ export async function updateQuotationVendor(id: number, input: any, userId: stri
       return true
     })
 
+    // 캐시 무효화 (모든 입찰 관련 데이터 무효화)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/[id]`)
     return {
       success: true,
@@ -474,8 +848,12 @@ export async function selectWinner(biddingId: number, vendorId: number, awardRat
           updatedAt: new Date()
         })
         .where(eq(biddings.id, biddingId))
-    })
+      })
 
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/${biddingId}`)
     return { success: true, message: '낙찰 처리가 완료되었습니다.' }
   } catch (error) {
@@ -487,6 +865,34 @@ export async function selectWinner(biddingId: number, vendorId: number, awardRat
 // 유찰 처리
 export async function markAsDisposal(biddingId: number, userId: string) {
   try {
+    // 입찰 정보 조회
+    const biddingInfo = await db
+      .select()
+      .from(biddings)
+      .where(eq(biddings.id, biddingId))
+      .limit(1)
+
+    if (biddingInfo.length === 0) {
+      return { success: false, error: '입찰 정보를 찾을 수 없습니다.' }
+    }
+
+    const bidding = biddingInfo[0]
+
+    // 입찰 참여 업체들 조회
+    const participantCompanies = await db
+      .select({
+        companyId: biddingCompanies.companyId,
+        companyName: vendors.vendorName,
+        contactEmail: vendors.email
+      })
+      .from(biddingCompanies)
+      .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isBiddingParticipated, true)
+      ))
+
+    // 입찰 상태를 유찰로 변경
     await db
       .update(biddings)
       .set({
@@ -495,85 +901,256 @@ export async function markAsDisposal(biddingId: number, userId: string) {
       })
       .where(eq(biddings.id, biddingId))
 
+    // 참여 업체들에게 유찰 안내 메일 발송
+    for (const company of participantCompanies) {
+      if (company.contactEmail) {
+        try {
+          await sendEmail({
+            to: company.contactEmail,
+            template: 'bidding-disposal',
+            context: {
+              companyName: company.companyName,
+              biddingNumber: bidding.biddingNumber,
+              title: bidding.title,
+              projectName: bidding.projectName,
+              itemName: bidding.itemName,
+              biddingType: bidding.biddingType,
+              processedDate: new Date().toLocaleDateString('ko-KR'),
+              managerName: bidding.managerName,
+              managerEmail: bidding.managerEmail,
+              managerPhone: bidding.managerPhone,
+              language: 'ko'
+            }
+          })
+        } catch (emailError) {
+          console.error(`Failed to send disposal email to ${company.contactEmail}:`, emailError)
+        }
+      }
+    }
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/${biddingId}`)
-    return { success: true, message: '유찰 처리가 완료되었습니다.' }
+    
+    return { 
+      success: true, 
+      message: `유찰 처리가 완료되었습니다. ${participantCompanies.length}개 업체에 안내 메일을 발송했습니다.` 
+    }
   } catch (error) {
     console.error('Failed to mark as disposal:', error)
     return { success: false, error: '유찰 처리에 실패했습니다.' }
   }
 }
 
-// 입찰 등록 (상태 변경)
+// 입찰 등록 (사전견적에서 선정된 업체들에게 본입찰 초대 발송)
 export async function registerBidding(biddingId: number, userId: string) {
   try {
-    await db
-      .update(biddings)
-      .set({
-        status: 'bidding_opened',
-        updatedAt: new Date()
+    // 사전견적에서 선정된 업체들 조회
+    const selectedCompanies = await db
+      .select({
+        companyId: biddingCompanies.companyId,
+        companyName: vendors.vendorName,
+        contactEmail: vendors.email
       })
+      .from(biddingCompanies)
+      .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isPreQuoteSelected, true)
+      ))
+
+    // 입찰 정보 조회
+    const biddingInfo = await db
+      .select()
+      .from(biddings)
       .where(eq(biddings.id, biddingId))
-      //todo 입찰 등록하면 bidding_companies  invitationStatus를 sent로 변경!
-      await db
-        .update(biddingCompanies)
+      .limit(1)
+
+    if (biddingInfo.length === 0) {
+      return { success: false, error: '입찰 정보를 찾을 수 없습니다.' }
+    }
+
+    const bidding = biddingInfo[0]
+
+    await db.transaction(async (tx) => {
+      // 1. 입찰 상태를 오픈으로 변경
+      await tx
+        .update(biddings)
         .set({
-          invitationStatus: 'sent',
+          status: 'bidding_opened',
           updatedAt: new Date()
         })
-        .where(eq(biddingCompanies.biddingId, biddingId))
+        .where(eq(biddings.id, biddingId))
+
+      // 2. 선정된 업체들의 입찰 초대 여부를 true로 변경하고 초대 상태 업데이트
+      for (const company of selectedCompanies) {
+        await tx
+          .update(biddingCompanies)
+          .set({
+            isBiddingInvited: true,
+            invitationStatus: 'sent',
+            updatedAt: new Date()
+          })
+          .where(and(
+            eq(biddingCompanies.biddingId, biddingId),
+            eq(biddingCompanies.companyId, company.companyId)
+          ))
+      }
+    })
+
+    // 3. 선정된 업체들에게 본입찰 초대 메일 발송
+    for (const company of selectedCompanies) {
+      if (company.contactEmail) {
+        try {
+          await sendEmail({
+            to: company.contactEmail,
+            template: 'bidding-invitation', // 새로운 본입찰 초대 템플릿 필요
+            context: {
+              companyName: company.companyName,
+              biddingNumber: bidding.biddingNumber,
+              title: bidding.title,
+              projectName: bidding.projectName,
+              itemName: bidding.itemName,
+              biddingType: bidding.biddingType,
+              submissionStartDate: bidding.submissionStartDate,
+              submissionEndDate: bidding.submissionEndDate,
+              biddingUrl: `${process.env.NEXT_PUBLIC_BASE_URL}/partners/bid/${biddingId}`,
+              managerName: bidding.managerName,
+              managerEmail: bidding.managerEmail,
+              managerPhone: bidding.managerPhone,
+              language: 'ko'
+            }
+          })
+        } catch (emailError) {
+          console.error(`Failed to send bidding invitation email to ${company.contactEmail}:`, emailError)
+        }
+      }
+    }
 
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath(`/evcp/bid/${biddingId}`)
-    return { success: true, message: '입찰이 성공적으로 등록되었습니다.' }
+    
+    return { 
+      success: true, 
+      message: `입찰이 성공적으로 등록되었습니다. ${selectedCompanies.length}개 업체에 초대 메일을 발송했습니다.` 
+    }
   } catch (error) {
     console.error('Failed to register bidding:', error)
     return { success: false, error: '입찰 등록에 실패했습니다.' }
   }
 }
 
-// 재입찰 생성
-export async function createRebidding(originalBiddingId: number, userId: string) {
+// 재입찰 생성 (기존 입찰의 revision 업데이트 + 메일 발송)
+export async function createRebidding(biddingId: number, userId: string) {
   try {
-    // 원본 입찰 정보 조회
-    const originalBidding = await db
+    // 기존 입찰 정보 조회
+    const bidding = await db
       .select()
       .from(biddings)
-      .where(eq(biddings.id, originalBiddingId))
+      .where(eq(biddings.id, biddingId))
       .limit(1)
 
-    if (originalBidding.length === 0) {
-      return { success: false, error: '원본 입찰을 찾을 수 없습니다.' }
+    if (bidding.length === 0) {
+      return { success: false, error: '입찰을 찾을 수 없습니다.' }
     }
 
-    const original = originalBidding[0]
+    const originalBidding = bidding[0]
+
+    // 기존 입찰 참여 업체들 조회
+    const participantCompanies = await db
+      .select({
+        companyId: biddingCompanies.companyId,
+        companyName: vendors.vendorName,
+        contactEmail: vendors.email
+      })
+      .from(biddingCompanies)
+      .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isBiddingParticipated, true)
+      ))
+
+    // 기존 입찰의 revision 증가 및 상태 변경
+    const updatedBidding = await db
+      .update(biddings)
+      .set({
+        revision: (originalBidding.revision || 0) + 1,
+        status: 'bidding_opened', // 재입찰 시 다시 오픈 상태로
+        updatedAt: new Date()
+      })
+      .where(eq(biddings.id, biddingId))
+      .returning({
+        id: biddings.id,
+        biddingNumber: biddings.biddingNumber,
+        revision: biddings.revision
+      })
 
-    // 재입찰용 데이터 준비
-    const rebiddingData = {
-      ...original,
-      id: undefined,
-      biddingNumber: `${original.biddingNumber}-R${(original.revision || 0) + 1}`,
-      revision: (original.revision || 0) + 1,
-      status: 'bidding_generated' as const,
-      createdAt: new Date(),
-      updatedAt: new Date()
+    if (updatedBidding.length === 0) {
+      return { success: false, error: '재입찰 업데이트에 실패했습니다.' }
     }
 
-    // 새로운 입찰 생성
-    const [newBidding] = await db
-      .insert(biddings)
-      .values(rebiddingData)
-      .returning({ id: biddings.id, biddingNumber: biddings.biddingNumber })
+    // 참여 업체들의 상태를 대기로 변경
+    await db
+      .update(biddingCompanies)
+      .set({
+        isBiddingParticipated: null, // 대기 상태로 변경
+        invitationStatus: 'sent',
+        updatedAt: new Date()
+      })
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isBiddingParticipated, true)
+      ))
 
+    // 재입찰 안내 메일 발송
+    for (const company of participantCompanies) {
+      if (company.contactEmail) {
+        try {
+          await sendEmail({
+            to: company.contactEmail,
+            template: 'rebidding-invitation',
+            context: {
+              companyName: company.companyName,
+              biddingNumber: updatedBidding[0].biddingNumber,
+              title: originalBidding.title,
+              projectName: originalBidding.projectName,
+              itemName: originalBidding.itemName,
+              biddingType: originalBidding.biddingType,
+              revision: updatedBidding[0].revision || 1,
+              submissionStartDate: originalBidding.submissionStartDate,
+              submissionEndDate: originalBidding.submissionEndDate,
+              biddingUrl: `${process.env.NEXT_PUBLIC_BASE_URL}/partners/bid/${biddingId}`,
+              managerName: originalBidding.managerName,
+              managerEmail: originalBidding.managerEmail,
+              managerPhone: originalBidding.managerPhone,
+              language: 'ko'
+            }
+          })
+        } catch (emailError) {
+          console.error(`Failed to send rebidding email to ${company.contactEmail}:`, emailError)
+        }
+      }
+    }
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
     revalidatePath('/evcp/bid')
-    revalidatePath(`/evcp/bid/${newBidding.id}`)
+    revalidatePath(`/evcp/bid/${biddingId}`)
 
     return {
       success: true,
-      message: '재입찰이 성공적으로 생성되었습니다.',
-      data: newBidding
+      message: `재입찰이 성공적으로 처리되었습니다. ${participantCompanies.length}개 업체에 안내 메일을 발송했습니다.`
     }
   } catch (error) {
     console.error('Failed to create rebidding:', error)
-    return { success: false, error: '재입찰 생성에 실패했습니다.' }
+    return { success: false, error: '재입찰 처리에 실패했습니다.' }
   }
 }
 
@@ -603,6 +1180,9 @@ export async function updateVendorSelectionReason(biddingId: number, selectedCom
         }
       })
 
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
     revalidatePath(`/evcp/bid/${biddingId}`)
     return { success: true, message: '업체 선정 사유가 성공적으로 업데이트되었습니다.' }
   } catch (error) {
@@ -611,6 +1191,257 @@ export async function updateVendorSelectionReason(biddingId: number, selectedCom
   }
 }
 
+// 낙찰용 문서 업로드
+export async function uploadAwardDocument(biddingId: number, file: File, userId: string) {
+  try {
+    const saveResult = await saveFile({
+      file,
+      directory: `biddings/${biddingId}/award`,
+      userId: userId
+    })
+
+    if (saveResult.success && saveResult.filePath) {
+      // biddingDocuments 테이블에 저장
+      const [document] = await db.insert(biddingDocuments).values({
+        biddingId,
+        fileName: saveResult.fileName || file.name,
+        originalFileName: file.name,
+        filePath: saveResult.filePath,
+        fileSize: file.size,
+        documentType: 'award',
+        title: '낙찰 관련 문서',
+        description: '낙찰 관련 첨부파일',
+        uploadedBy: userId,
+        uploadedAt: new Date(),
+        createdAt: new Date(),
+        updatedAt: new Date()
+      }).returning()
+
+      return {
+        success: true,
+        message: '파일이 성공적으로 업로드되었습니다.',
+        document
+      }
+    } else {
+      return {
+        success: false,
+        error: saveResult.error || '파일 저장에 실패했습니다.'
+      }
+    }
+  } catch (error) {
+    console.error('Failed to upload award document:', error)
+    return {
+      success: false,
+      error: '파일 업로드에 실패했습니다.'
+    }
+  }
+}
+
+// 낙찰용 문서 목록 조회
+export async function getAwardDocuments(biddingId: number) {
+  try {
+    const documents = await db
+      .select()
+      .from(biddingDocuments)
+      .where(and(
+        eq(biddingDocuments.biddingId, biddingId),
+        eq(biddingDocuments.documentType, 'other')
+      ))
+      .orderBy(desc(biddingDocuments.uploadedAt))
+
+    return documents
+  } catch (error) {
+    console.error('Failed to get award documents:', error)
+    return []
+  }
+}
+
+// 낙찰용 문서 다운로드
+export async function getAwardDocumentForDownload(documentId: number, biddingId: number) {
+  try {
+    const documents = await db
+      .select()
+      .from(biddingDocuments)
+      .where(and(
+        eq(biddingDocuments.id, documentId),
+        eq(biddingDocuments.biddingId, biddingId),
+        eq(biddingDocuments.documentType, 'other')
+      ))
+      .limit(1)
+
+    if (documents.length === 0) {
+      return {
+        success: false,
+        error: '문서를 찾을 수 없습니다.'
+      }
+    }
+
+    return {
+      success: true,
+      document: documents[0]
+    }
+  } catch (error) {
+    console.error('Failed to get award document for download:', error)
+    return {
+      success: false,
+      error: '문서 다운로드 준비에 실패했습니다.'
+    }
+  }
+}
+
+// 낙찰용 문서 삭제
+export async function deleteAwardDocument(documentId: number, biddingId: number, userId: string) {
+  try {
+    // 문서 정보 조회
+    const documents = await db
+      .select()
+      .from(biddingDocuments)
+      .where(and(
+        eq(biddingDocuments.id, documentId),
+        eq(biddingDocuments.biddingId, biddingId),
+        eq(biddingDocuments.documentType, 'other'),
+        eq(biddingDocuments.uploadedBy, userId)
+      ))
+      .limit(1)
+
+    if (documents.length === 0) {
+      return {
+        success: false,
+        error: '삭제할 수 있는 문서가 없습니다.'
+      }
+    }
+
+    // DB에서 삭제
+    await db
+      .delete(biddingDocuments)
+      .where(eq(biddingDocuments.id, documentId))
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+
+    return {
+      success: true,
+      message: '문서가 성공적으로 삭제되었습니다.'
+    }
+  } catch (error) {
+    console.error('Failed to delete award document:', error)
+    return {
+      success: false,
+      error: '문서 삭제에 실패했습니다.'
+    }
+  }
+}
+
+// 낙찰 처리 (발주비율과 함께)
+export async function awardBidding(biddingId: number, selectionReason: string, userId: string) {
+  try {
+    // 낙찰된 업체들 조회 (isWinner가 true인 업체들)
+    const awardedCompanies = await db
+      .select({
+        companyId: biddingCompanies.companyId,
+        finalQuoteAmount: biddingCompanies.finalQuoteAmount,
+        awardRatio: biddingCompanies.awardRatio
+      })
+      .from(biddingCompanies)
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isWinner, true)
+      ))
+
+    if (awardedCompanies.length === 0) {
+      return { success: false, error: '낙찰된 업체가 없습니다. 먼저 발주비율을 산정해주세요.' }
+    }
+
+    // 최종입찰가 계산 (낙찰된 업체의 견적금액 * 발주비율의 합)
+    let finalBidPrice = 0
+    for (const company of awardedCompanies) {
+      const quoteAmount = parseFloat(company.finalQuoteAmount?.toString() || '0')
+      const ratio = parseFloat(company.awardRatio?.toString() || '0') / 100
+      finalBidPrice += quoteAmount * ratio
+    }
+
+    await db.transaction(async (tx) => {
+      // 1. 입찰 상태를 낙찰로 변경하고 최종입찰가 업데이트
+      await tx
+        .update(biddings)
+        .set({
+          status: 'vendor_selected',
+          finalBidPrice: finalBidPrice.toString(),
+          updatedAt: new Date()
+        })
+        .where(eq(biddings.id, biddingId))
+
+      // 2. 선정 사유 저장 (첫 번째 낙찰 업체 기준으로 저장)
+      const firstAwardedCompany = awardedCompanies[0]
+      await tx
+        .insert(vendorSelectionResults)
+        .values({
+          biddingId,
+          selectedCompanyId: firstAwardedCompany.companyId,
+          selectionReason,
+          selectedBy: userId,
+          selectedAt: new Date(),
+          createdAt: new Date(),
+          updatedAt: new Date()
+        })
+        .onConflictDoUpdate({
+          target: [vendorSelectionResults.biddingId],
+          set: {
+            selectedCompanyId: firstAwardedCompany.companyId,
+            selectionReason,
+            selectedBy: userId,
+            selectedAt: new Date(),
+            updatedAt: new Date()
+          }
+        })
+
+    })
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingId}`)
+    revalidateTag('quotation-vendors')
+    revalidateTag('quotation-details')
+    revalidatePath(`/evcp/bid/${biddingId}`)
+
+    return {
+      success: true,
+      message: `낙찰 처리가 완료되었습니다. 최종입찰가: ${finalBidPrice.toLocaleString()}원`
+    }
+  } catch (error) {
+    console.error('Failed to award bidding:', error)
+    return { success: false, error: '낙찰 처리에 실패했습니다.' }
+  }
+}
+
+// 낙찰된 업체 정보 조회
+export async function getAwardedCompanies(biddingId: number) {
+  try {
+    const awardedCompanies = await db
+      .select({
+        companyId: biddingCompanies.companyId,
+        companyName: vendors.vendorName,
+        finalQuoteAmount: biddingCompanies.finalQuoteAmount,
+        awardRatio: biddingCompanies.awardRatio
+      })
+      .from(biddingCompanies)
+      .leftJoin(vendors, eq(biddingCompanies.companyId, vendors.id))
+      .where(and(
+        eq(biddingCompanies.biddingId, biddingId),
+        eq(biddingCompanies.isWinner, true)
+      ))
+
+    return awardedCompanies.map(company => ({
+      companyId: company.companyId,
+      companyName: company.companyName,
+      finalQuoteAmount: parseFloat(company.finalQuoteAmount?.toString() || '0'),
+      awardRatio: parseFloat(company.awardRatio?.toString() || '0')
+    }))
+  } catch (error) {
+    console.error('Failed to get awarded companies:', error)
+    return []
+  }
+}
+
 // PR 품목 정보 업데이트
 export async function updatePrItem(prItemId: number, input: Partial<typeof prItemsForBidding.$inferSelect>, userId: string) {
   try {
@@ -622,7 +1453,12 @@ export async function updatePrItem(prItemId: number, input: Partial<typeof prIte
       })
       .where(eq(prItemsForBidding.id, prItemId))
 
-    revalidatePath(`/evcp/bid/${input.biddingId}`)
+    // 캐시 무효화
+    if (input.biddingId) {
+      revalidateTag(`bidding-${input.biddingId}`)
+      revalidateTag('pr-items')
+      revalidatePath(`/evcp/bid/${input.biddingId}`)
+    }
     return { success: true, message: '품목 정보가 성공적으로 업데이트되었습니다.' }
   } catch (error) {
     console.error('Failed to update PR item:', error)
@@ -630,40 +1466,128 @@ export async function updatePrItem(prItemId: number, input: Partial<typeof prIte
   }
 }
 
-// 입찰에 협력업체 추가
-export async function addVendorToBidding(biddingId: number, companyId: number, userId: string) {
+// 입찰 참여여부 업데이트
+export async function updateBiddingParticipation(
+  biddingCompanyId: number,
+  participated: boolean,
+  userId: string
+) {
   try {
-    // 이미 추가된 업체인지 확인
-    const existing = await db
-      .select()
-      .from(biddingCompanies)
-      .where(and(
-        eq(biddingCompanies.biddingId, biddingId),
-        eq(biddingCompanies.companyId, companyId)
-      ))
-      .limit(1)
+    const result = await db.update(biddingCompanies)
+      .set({
+        isBiddingParticipated: participated,
+        updatedAt: new Date(),
+      })
+      .where(eq(biddingCompanies.id, biddingCompanyId))
+      .returning({ biddingId: biddingCompanies.biddingId })
+
+    // 캐시 무효화
+    if (result.length > 0) {
+      const biddingId = result[0].biddingId
+      revalidateTag(`bidding-${biddingId}`)
+      revalidateTag('quotation-vendors')
+      revalidatePath(`/evcp/bid/${biddingId}`)
+    }
 
-    if (existing.length > 0) {
-      return { success: false, error: '이미 추가된 협력업체입니다.' }
+    return {
+      success: true,
+      message: `입찰 참여상태가 ${participated ? '응찰' : '미응찰'}로 업데이트되었습니다.`,
+    }
+  } catch (error) {
+    console.error('Failed to update bidding participation:', error)
+    return { 
+      success: false, 
+      error: error instanceof Error ? error.message : '입찰 참여상태 업데이트에 실패했습니다.' 
     }
+  }
+}
 
-    // 새로운 협력업체 추가
-    await db
-      .insert(biddingCompanies)
-      .values({
-        biddingId,
-        companyId,
-        invitationStatus: 'pending',
-        invitedAt: new Date(),
-        createdAt: new Date(),
-        updatedAt: new Date()
-      })
+// =================================================
+// 품목별 견적 관련 함수들 (본입찰용)
+// =================================================
 
-    revalidatePath(`/evcp/bid/${biddingId}`)
-    return { success: true, message: '협력업체가 성공적으로 추가되었습니다.' }
+// 품목별 견적 임시 저장 (본입찰용)
+export async function saveBiddingDraft(
+  biddingCompanyId: number,
+  prItemQuotations: Array<{
+    prItemId: number
+    bidUnitPrice: number
+    bidAmount: number
+    proposedDeliveryDate?: string
+    technicalSpecification?: string
+  }>,
+  userId: string
+) {
+  try {
+    let totalAmount = 0
+    
+    await db.transaction(async (tx) => {
+      // 품목별 견적 Upsert 방식으로 저장
+      for (const item of prItemQuotations) {
+        // 기존 데이터 확인
+        const existingItem = await tx
+          .select()
+          .from(companyPrItemBids)
+          .where(
+            and(
+              eq(companyPrItemBids.biddingCompanyId, biddingCompanyId),
+              eq(companyPrItemBids.prItemId, item.prItemId),
+            )
+          )
+          .limit(1)
+
+        const itemData = {
+          bidUnitPrice: item.bidUnitPrice.toString(),
+          bidAmount: item.bidAmount.toString(),
+          proposedDeliveryDate: item.proposedDeliveryDate,
+          technicalSpecification: item.technicalSpecification,
+          currency: 'KRW',
+          updatedAt: new Date()
+        }
+
+        if (existingItem.length > 0) {
+          // 업데이트
+          await tx
+            .update(companyPrItemBids)
+            .set(itemData)
+            .where(
+              and(
+                eq(companyPrItemBids.biddingCompanyId, biddingCompanyId),
+                eq(companyPrItemBids.prItemId, item.prItemId),
+                eq(companyPrItemBids.isPreQuote, false)
+              )
+            )
+        } else {
+          // 새로 생성
+          await tx.insert(companyPrItemBids)
+            .values({
+              biddingCompanyId,
+              prItemId: item.prItemId,
+              isPreQuote: false, // 본입찰 데이터
+              createdAt: new Date(),
+              ...itemData
+            })
+        }
+
+        totalAmount += item.bidAmount
+      }
+    })
+
+    // 캐시 무효화
+    revalidateTag(`bidding-${biddingCompanyId}`)
+    revalidateTag('quotation-vendors')
+
+    return {
+      success: true,
+      message: '품목별 견적이 임시 저장되었습니다.',
+      totalAmount
+    }
   } catch (error) {
-    console.error('Failed to add vendor to bidding:', error)
-    return { success: false, error: '협력업체 추가에 실패했습니다.' }
+    console.error('Failed to save bidding draft:', error)
+    return {
+      success: false,
+      error: error instanceof Error ? error.message : '임시 저장에 실패했습니다.'
+    }
   }
 }
 
@@ -671,6 +1595,43 @@ export async function addVendorToBidding(biddingId: number, companyId: number, u
 // 협력업체 페이지용 함수들 (Partners)
 // =================================================
 
+// 협력업체용 입찰 참여여부 업데이트
+export async function updatePartnerBiddingParticipation(
+  biddingCompanyId: number,
+  participated: boolean,
+  userId: string
+) {
+  try {
+    const result = await db.update(biddingCompanies)
+      .set({
+        isBiddingParticipated: participated,
+        updatedAt: new Date(),
+      })
+      .where(eq(biddingCompanies.id, biddingCompanyId))
+      .returning({ biddingId: biddingCompanies.biddingId })
+
+    // 캐시 무효화
+    if (result.length > 0) {
+      const biddingId = result[0].biddingId
+      revalidateTag(`bidding-${biddingId}`)
+      revalidateTag('quotation-vendors')
+      revalidateTag(`partners-bidding-${biddingId}`)
+      revalidatePath(`/partners/bid/${biddingId}`)
+    }
+
+    return {
+      success: true,
+      message: `입찰 참여상태가 ${participated ? '응찰' : '미응찰'}로 업데이트되었습니다.`,
+    }
+  } catch (error) {
+    console.error('Failed to update partner bidding participation:', error)
+    return { 
+      success: false, 
+      error: error instanceof Error ? error.message : '입찰 참여상태 업데이트에 실패했습니다.' 
+    }
+  }
+}
+
 // 협력업체용 입찰 목록 조회 (bidding_companies 기준)
 export interface PartnersBiddingListItem {
   // bidding_companies 정보
@@ -683,6 +1644,7 @@ export interface PartnersBiddingListItem {
   isWinner: boolean | null
   isAttendingMeeting: boolean | null
   isPreQuoteSelected: boolean | null
+  isBiddingInvited: boolean | null
   notes: string | null
   createdAt: Date
   updatedAt: Date
@@ -726,6 +1688,7 @@ export async function getBiddingListForPartners(companyId: number): Promise<Part
         isWinner: biddingCompanies.isWinner,
         isAttendingMeeting: biddingCompanies.isAttendingMeeting,
         isPreQuoteSelected: biddingCompanies.isPreQuoteSelected,
+        isBiddingInvited: biddingCompanies.isBiddingInvited,
         notes: biddingCompanies.notes,
         createdAt: biddingCompanies.createdAt,
         updatedAt: biddingCompanies.updatedAt,
@@ -763,8 +1726,9 @@ export async function getBiddingListForPartners(companyId: number): Promise<Part
     // 계산된 필드 추가
     const resultWithCalculatedFields = result.map(item => ({
       ...item,
-      respondedAt: item.respondedAt ? item.respondedAt.toISOString() : null,
+      respondedAt: item.respondedAt ? (item.respondedAt instanceof Date ? item.respondedAt.toISOString() : item.respondedAt.toString()) : null,
       finalQuoteAmount: item.finalQuoteAmount ? Number(item.finalQuoteAmount) : null, // string을 number로 변환
+      finalQuoteSubmittedAt: item.finalQuoteSubmittedAt ? (item.finalQuoteSubmittedAt instanceof Date ? item.finalQuoteSubmittedAt.toISOString() : item.finalQuoteSubmittedAt.toString()) : null,
       responseDeadline: item.submissionStartDate
         ? new Date(item.submissionStartDate.getTime() - 3 * 24 * 60 * 60 * 1000) // 3일 전
         : null,
@@ -785,6 +1749,7 @@ export async function getBiddingDetailsForPartners(biddingId: number, companyId:
       .select({
         // 입찰 기본 정보
         id: biddings.id,
+        biddingId: biddings.id, // partners-bidding-detail.tsx에서 필요한 필드
         biddingNumber: biddings.biddingNumber,
         revision: biddings.revision,
         projectName: biddings.projectName,
@@ -825,6 +1790,7 @@ export async function getBiddingDetailsForPartners(biddingId: number, companyId:
         isWinner: biddingCompanies.isWinner,
         isAttendingMeeting: biddingCompanies.isAttendingMeeting,
         isPreQuoteSelected: biddingCompanies.isPreQuoteSelected,
+        isBiddingParticipated: biddingCompanies.isBiddingParticipated,
         // 응답한 조건들 (company_condition_responses) - 제시된 조건과 응답 모두 여기서 관리
         paymentTermsResponse: companyConditionResponses.paymentTermsResponse,
         taxConditionsResponse: companyConditionResponses.taxConditionsResponse,
@@ -869,6 +1835,13 @@ export async function submitPartnerResponse(
     sparePartResponse?: string
     additionalProposals?: string
     finalQuoteAmount?: number
+    prItemQuotations?: Array<{
+      prItemId: number
+      bidUnitPrice: number
+      bidAmount: number
+      proposedDeliveryDate?: string
+      technicalSpecification?: string
+    }>
     priceAdjustmentForm?: {
       itemName?: string
       adjustmentReflectionPoint?: string
@@ -891,91 +1864,98 @@ export async function submitPartnerResponse(
 ) {
   try {
     const result = await db.transaction(async (tx) => {
-      // 1. company_condition_responses 테이블에 응답 저장/업데이트
-      const responseData = {
-        paymentTermsResponse: response.paymentTermsResponse,
-        taxConditionsResponse: response.taxConditionsResponse,
-        incotermsResponse: response.incotermsResponse,
-        proposedContractDeliveryDate: response.proposedContractDeliveryDate ? response.proposedContractDeliveryDate : null, // Date 대신 string 사용
-        proposedShippingPort: response.proposedShippingPort,
-        proposedDestinationPort: response.proposedDestinationPort,
-        priceAdjustmentResponse: response.priceAdjustmentResponse,
-        isInitialResponse: response.isInitialResponse,
-        sparePartResponse: response.sparePartResponse,
-        additionalProposals: response.additionalProposals,
-        submittedAt: new Date(),
-        updatedAt: new Date(),
-      }
-
-      // 기존 응답이 있는지 확인
-      const existingResponse = await tx
-        .select()
-        .from(companyConditionResponses)
-        .where(eq(companyConditionResponses.biddingCompanyId, biddingCompanyId))
-        .limit(1)
+      // 0. 품목별 견적 정보 최종 저장 (본입찰 제출) - Upsert 방식
+      if (response.prItemQuotations && response.prItemQuotations.length > 0) {
+        for (const item of response.prItemQuotations) {
+          // 기존 데이터 확인
+          const existingItem = await tx
+            .select()
+            .from(companyPrItemBids)
+            .where(
+              and(
+                eq(companyPrItemBids.biddingCompanyId, biddingCompanyId),
+                eq(companyPrItemBids.prItemId, item.prItemId),
+              )
+            )
+            .limit(1)
 
-      let companyConditionResponseId: number
+          const itemData = {
+            bidUnitPrice: item.bidUnitPrice.toString(),
+            bidAmount: item.bidAmount.toString(),
+            proposedDeliveryDate: item.proposedDeliveryDate || null,
+            technicalSpecification: item.technicalSpecification || null,
+            currency: 'KRW',
+            submittedAt: new Date(),
+            updatedAt: new Date()
+          }
 
-      if (existingResponse.length > 0) {
-        // 업데이트
-        await tx
-          .update(companyConditionResponses)
-          .set(responseData)
-          .where(eq(companyConditionResponses.biddingCompanyId, biddingCompanyId))
-        
-        companyConditionResponseId = existingResponse[0].id
-      } else {
-        // 새로 생성
-        const [newResponse] = await tx
-          .insert(companyConditionResponses)
-          .values({
-            biddingCompanyId,
-            ...responseData,
-          })
-          .returning({ id: companyConditionResponses.id })
-        
-        companyConditionResponseId = newResponse.id
+          if (existingItem.length > 0) {
+            // 업데이트
+            await tx
+              .update(companyPrItemBids)
+              .set(itemData)
+              .where(
+                and(
+                  eq(companyPrItemBids.biddingCompanyId, biddingCompanyId),
+                  eq(companyPrItemBids.prItemId, item.prItemId),
+                  eq(companyPrItemBids.isPreQuote, false)
+                )
+              )
+          } else {
+            // 새로 생성
+            await tx.insert(companyPrItemBids)
+              .values({
+                biddingCompanyId,
+                prItemId: item.prItemId,
+                isPreQuote: false, // 본입찰 데이터
+                createdAt: new Date(),
+                ...itemData
+              })
+          }
+        }
       }
 
-      // 3. 연동제 정보 저장 (연동제 적용이 true이고 연동제 정보가 있는 경우)
-      if (response.priceAdjustmentResponse && response.priceAdjustmentForm) {
-        const priceAdjustmentData = {
-          companyConditionResponsesId: companyConditionResponseId,
-          itemName: response.priceAdjustmentForm.itemName,
-          adjustmentReflectionPoint: response.priceAdjustmentForm.adjustmentReflectionPoint,
-          majorApplicableRawMaterial: response.priceAdjustmentForm.majorApplicableRawMaterial,
-          adjustmentFormula: response.priceAdjustmentForm.adjustmentFormula,
-          rawMaterialPriceIndex: response.priceAdjustmentForm.rawMaterialPriceIndex,
-          referenceDate: response.priceAdjustmentForm.referenceDate ? new Date(response.priceAdjustmentForm.referenceDate) : null,
-          comparisonDate: response.priceAdjustmentForm.comparisonDate ? new Date(response.priceAdjustmentForm.comparisonDate) : null,
-          adjustmentRatio: response.priceAdjustmentForm.adjustmentRatio,
-          notes: response.priceAdjustmentForm.notes,
-          adjustmentConditions: response.priceAdjustmentForm.adjustmentConditions,
-          majorNonApplicableRawMaterial: response.priceAdjustmentForm.majorNonApplicableRawMaterial,
-          adjustmentPeriod: response.priceAdjustmentForm.adjustmentPeriod,
-          contractorWriter: response.priceAdjustmentForm.contractorWriter,
-          adjustmentDate: response.priceAdjustmentForm.adjustmentDate ? new Date(response.priceAdjustmentForm.adjustmentDate) : null,
-          nonApplicableReason: response.priceAdjustmentForm.nonApplicableReason,
-        }
 
-        // 기존 연동제 정보가 있는지 확인
-        const existingPriceAdjustment = await tx
-          .select()
-          .from(priceAdjustmentForms)
-          .where(eq(priceAdjustmentForms.companyConditionResponsesId, companyConditionResponseId))
-          .limit(1)
 
-        if (existingPriceAdjustment.length > 0) {
-          // 업데이트
-          await tx
-            .update(priceAdjustmentForms)
-            .set(priceAdjustmentData)
-            .where(eq(priceAdjustmentForms.companyConditionResponsesId, companyConditionResponseId))
-        } else {
-          // 새로 생성
-          await tx.insert(priceAdjustmentForms).values(priceAdjustmentData)
-        }
-      }
+      // 3. 연동제 정보 저장 (연동제 적용이 true이고 연동제 정보가 있는 경우)
+      // if (response.priceAdjustmentResponse && response.priceAdjustmentForm) {
+      //   const priceAdjustmentData = {
+      //     companyConditionResponsesId: companyConditionResponseId,
+      //     itemName: response.priceAdjustmentForm.itemName,
+      //     adjustmentReflectionPoint: response.priceAdjustmentForm.adjustmentReflectionPoint,
+      //     majorApplicableRawMaterial: response.priceAdjustmentForm.majorApplicableRawMaterial,
+      //     adjustmentFormula: response.priceAdjustmentForm.adjustmentFormula,
+      //     rawMaterialPriceIndex: response.priceAdjustmentForm.rawMaterialPriceIndex,
+      //     referenceDate: response.priceAdjustmentForm.referenceDate || null,
+      //     comparisonDate: response.priceAdjustmentForm.comparisonDate || null,
+      //     adjustmentRatio: response.priceAdjustmentForm.adjustmentRatio,
+      //     notes: response.priceAdjustmentForm.notes,
+      //     adjustmentConditions: response.priceAdjustmentForm.adjustmentConditions,
+      //     majorNonApplicableRawMaterial: response.priceAdjustmentForm.majorNonApplicableRawMaterial,
+      //     adjustmentPeriod: response.priceAdjustmentForm.adjustmentPeriod,
+      //     contractorWriter: response.priceAdjustmentForm.contractorWriter,
+      //     adjustmentDate: response.priceAdjustmentForm.adjustmentDate || null,
+      //     nonApplicableReason: response.priceAdjustmentForm.nonApplicableReason,
+      //   }
+
+      //   // 기존 연동제 정보가 있는지 확인
+      //   const existingPriceAdjustment = await tx
+      //     .select()
+      //     .from(priceAdjustmentForms)
+      //     .where(eq(priceAdjustmentForms.companyConditionResponsesId, companyConditionResponseId))
+      //     .limit(1)
+
+      //   if (existingPriceAdjustment.length > 0) {
+      //     // 업데이트
+      //     await tx
+      //       .update(priceAdjustmentForms)
+      //       .set(priceAdjustmentData)
+      //       .where(eq(priceAdjustmentForms.companyConditionResponsesId, companyConditionResponseId))
+      //   } else {
+      //     // 새로 생성
+      //     await tx.insert(priceAdjustmentForms).values(priceAdjustmentData)
+      //   }
+      // }
 
       // 2. biddingCompanies 테이블에 견적 금액과 상태 업데이트
       const companyUpdateData: any = {
@@ -995,9 +1975,38 @@ export async function submitPartnerResponse(
         .set(companyUpdateData)
         .where(eq(biddingCompanies.id, biddingCompanyId))
 
-      return true
+      // biddingId 조회
+      const biddingCompanyInfo = await tx
+        .select({ biddingId: biddingCompanies.biddingId })
+        .from(biddingCompanies)
+        .where(eq(biddingCompanies.id, biddingCompanyId))
+        .limit(1)
+
+      const biddingId = biddingCompanyInfo[0]?.biddingId
+
+      // 응찰 제출 시 입찰 상태를 평가중으로 변경 (bidding_opened 상태에서만)
+      if (biddingId && response.finalQuoteAmount !== undefined) {
+        await tx
+          .update(biddings)
+          .set({
+            status: 'evaluation_of_bidding',
+            updatedAt: new Date()
+          })
+          .where(and(
+            eq(biddings.id, biddingId),
+            eq(biddings.status, 'bidding_opened')
+          ))
+      }
+
+      return biddingId
     })
 
+    // 캐시 무효화
+    if (result) {
+      revalidateTag(`bidding-${result}`)
+      revalidateTag('quotation-vendors')
+      revalidateTag('quotation-details')
+    }
     revalidatePath('/partners/bid/[id]')
     return {
       success: true,
@@ -1090,7 +2099,7 @@ export async function getSpecificationMeetingForPartners(biddingId: number) {
       data: {
         ...bidding[0],
         documents,
-        meetingDate: specMeeting[0].meetingDate ? specMeeting[0].meetingDate.toISOString().split('T')[0] : null,
+        meetingDate: specMeeting[0].meetingDate ? (specMeeting[0].meetingDate instanceof Date ? specMeeting[0].meetingDate.toISOString().split('T')[0] : specMeeting[0].meetingDate.toString().split('T')[0]) : null,
         meetingTime: specMeeting[0].meetingTime,
         location: specMeeting[0].location,
         address: specMeeting[0].address,
@@ -1186,6 +2195,10 @@ export async function updatePartnerAttendance(
             // 메일 발송 실패해도 참석 여부 업데이트는 성공으로 처리
           }
           
+          // 캐시 무효화
+          revalidateTag(`bidding-${biddingInfo[0].biddingId}`)
+          revalidateTag('quotation-vendors')
+          
           return {
             ...biddingInfo[0],
             companyName,
diff --git a/lib/bidding/detail/table/bidding-award-dialog.tsx b/lib/bidding/detail/table/bidding-award-dialog.tsx
new file mode 100644
index 00000000..3ab883f2
--- /dev/null
+++ b/lib/bidding/detail/table/bidding-award-dialog.tsx
@@ -0,0 +1,259 @@
+'use client'
+
+import * as React from 'react'
+import { useTransition } from 'react'
+import { Button } from '@/components/ui/button'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Label } from '@/components/ui/label'
+import { Textarea } from '@/components/ui/textarea'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Badge } from '@/components/ui/badge'
+import { 
+  Table, 
+  TableBody, 
+  TableCell, 
+  TableHead, 
+  TableHeader, 
+  TableRow 
+} from '@/components/ui/table'
+import { Trophy, Building2, Calculator } from 'lucide-react'
+import { useToast } from '@/hooks/use-toast'
+import { getAwardedCompanies, awardBidding } from '@/lib/bidding/detail/service'
+import { AwardSimpleFileUpload } from './components/award-simple-file-upload'
+
+interface BiddingAwardDialogProps {
+  biddingId: number
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  onSuccess: () => void
+}
+
+interface AwardedCompany {
+  companyId: number
+  companyName: string | null
+  finalQuoteAmount: number
+  awardRatio: number
+}
+
+export function BiddingAwardDialog({
+  biddingId,
+  open,
+  onOpenChange,
+  onSuccess
+}: BiddingAwardDialogProps) {
+  const { toast } = useToast()
+  const [isPending, startTransition] = useTransition()
+  const [selectionReason, setSelectionReason] = React.useState('')
+  const [awardedCompanies, setAwardedCompanies] = React.useState<AwardedCompany[]>([])
+  const [isLoading, setIsLoading] = React.useState(false)
+
+  // 낙찰된 업체 정보 로드
+  React.useEffect(() => {
+    if (open) {
+      setIsLoading(true)
+      getAwardedCompanies(biddingId)
+        .then(companies => {
+          setAwardedCompanies(companies)
+        })
+        .catch(error => {
+          console.error('Failed to load awarded companies:', error)
+          toast({
+            title: '오류',
+            description: '낙찰 업체 정보를 불러오는데 실패했습니다.',
+            variant: 'destructive',
+          })
+        })
+        .finally(() => {
+          setIsLoading(false)
+        })
+    }
+  }, [open, biddingId, toast])
+
+  // 최종입찰가 계산
+  const finalBidPrice = React.useMemo(() => {
+    return awardedCompanies.reduce((sum, company) => {
+      return sum + (company.finalQuoteAmount * company.awardRatio / 100)
+    }, 0)
+  }, [awardedCompanies])
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault()
+
+    if (!selectionReason.trim()) {
+      toast({
+        title: '유효성 오류',
+        description: '낙찰 사유를 입력해주세요.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    if (awardedCompanies.length === 0) {
+      toast({
+        title: '유효성 오류',
+        description: '낙찰된 업체가 없습니다. 먼저 발주비율을 산정해주세요.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    startTransition(async () => {
+      const result = await awardBidding(biddingId, selectionReason, 'current-user')
+
+      if (result.success) {
+        toast({
+          title: '성공',
+          description: result.message,
+        })
+        onSuccess()
+        onOpenChange(false)
+        // 폼 초기화
+        setSelectionReason('')
+      } else {
+        toast({
+          title: '오류',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-4xl max-h-[90vh] overflow-y-auto">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <Trophy className="w-5 h-5 text-yellow-600" />
+            낙찰 처리
+          </DialogTitle>
+          <DialogDescription>
+            낙찰된 업체의 발주비율과 선정 사유를 확인하고 낙찰을 완료하세요.
+          </DialogDescription>
+        </DialogHeader>
+
+        <form onSubmit={handleSubmit}>
+          <div className="space-y-6">
+            {/* 낙찰 업체 정보 */}
+            <Card>
+              <CardHeader>
+                <CardTitle className="flex items-center gap-2">
+                  <Building2 className="w-4 h-4" />
+                  낙찰 업체 정보
+                </CardTitle>
+              </CardHeader>
+              <CardContent>
+                {isLoading ? (
+                  <div className="text-center py-4">
+                    <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary mx-auto"></div>
+                    <p className="mt-2 text-sm text-muted-foreground">낙찰 업체 정보를 불러오는 중...</p>
+                  </div>
+                ) : awardedCompanies.length > 0 ? (
+                  <div className="space-y-4">
+                    <Table>
+                      <TableHeader>
+                        <TableRow>
+                          <TableHead>업체명</TableHead>
+                          <TableHead className="text-right">견적금액</TableHead>
+                          <TableHead className="text-right">발주비율</TableHead>
+                          <TableHead className="text-right">발주금액</TableHead>
+                        </TableRow>
+                      </TableHeader>
+                      <TableBody>
+                        {awardedCompanies.map((company) => (
+                          <TableRow key={company.companyId}>
+                            <TableCell className="font-medium">
+                              <div className="flex items-center gap-2">
+                                <Badge variant="default" className="bg-green-600">낙찰</Badge>
+                                {company.companyName}
+                              </div>
+                            </TableCell>
+                            <TableCell className="text-right">
+                              {company.finalQuoteAmount.toLocaleString()}원
+                            </TableCell>
+                            <TableCell className="text-right">
+                              {company.awardRatio}%
+                            </TableCell>
+                            <TableCell className="text-right font-semibold">
+                              {(company.finalQuoteAmount * company.awardRatio / 100).toLocaleString()}원
+                            </TableCell>
+                          </TableRow>
+                        ))}
+                      </TableBody>
+                    </Table>
+
+                    {/* 최종입찰가 요약 */}
+                    <div className="flex items-center justify-between p-4 bg-blue-50 border border-blue-200 rounded-lg">
+                      <div className="flex items-center gap-2">
+                        <Calculator className="w-5 h-5 text-blue-600" />
+                        <span className="font-semibold text-blue-800">최종입찰가</span>
+                      </div>
+                      <span className="text-xl font-bold text-blue-800">
+                        {finalBidPrice.toLocaleString()}원
+                      </span>
+                    </div>
+                  </div>
+                ) : (
+                  <div className="text-center py-8">
+                    <Trophy className="w-12 h-12 text-gray-400 mx-auto mb-4" />
+                    <p className="text-gray-500 mb-2">낙찰된 업체가 없습니다</p>
+                    <p className="text-sm text-gray-400">
+                      먼저 업체 수정 다이얼로그에서 발주비율을 산정해주세요.
+                    </p>
+                  </div>
+                )}
+              </CardContent>
+            </Card>
+
+            {/* 낙찰 사유 */}
+            <div className="space-y-2">
+              <Label htmlFor="selectionReason">
+                낙찰 사유 <span className="text-red-500">*</span>
+              </Label>
+              <Textarea
+                id="selectionReason"
+                placeholder="낙찰 사유를 상세히 입력해주세요..."
+                value={selectionReason}
+                onChange={(e) => setSelectionReason(e.target.value)}
+                rows={4}
+                className="resize-none"
+              />
+            </div>
+
+            {/* 첨부파일 */}
+            <AwardSimpleFileUpload
+              biddingId={biddingId}
+              userId="current-user"
+              readOnly={false}
+            />
+          </div>
+
+          <DialogFooter className="mt-6">
+            <Button
+              type="button"
+              variant="outline"
+              onClick={() => onOpenChange(false)}
+              disabled={isPending}
+            >
+              취소
+            </Button>
+            <Button
+              type="submit"
+              disabled={isPending || awardedCompanies.length === 0}
+            >
+              {isPending ? '처리 중...' : '낙찰 완료'}
+            </Button>
+          </DialogFooter>
+        </form>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/lib/bidding/detail/table/bidding-detail-content.tsx b/lib/bidding/detail/table/bidding-detail-content.tsx
index 50f0941e..91bea2f4 100644
--- a/lib/bidding/detail/table/bidding-detail-content.tsx
+++ b/lib/bidding/detail/table/bidding-detail-content.tsx
@@ -7,13 +7,11 @@ import { QuotationDetails, QuotationVendor } from '@/lib/bidding/detail/service'
 import { BiddingDetailVendorTableContent } from './bidding-detail-vendor-table'
 import { BiddingDetailItemsDialog } from './bidding-detail-items-dialog'
 import { BiddingDetailTargetPriceDialog } from './bidding-detail-target-price-dialog'
-import { BiddingDetailSelectionReasonDialog } from './bidding-detail-selection-reason-dialog'
 
 interface BiddingDetailContentProps {
   bidding: Bidding
   quotationDetails: QuotationDetails | null
   quotationVendors: QuotationVendor[]
-  biddingCompanies: any[]
   prItems: any[]
 }
 
@@ -21,13 +19,13 @@ export function BiddingDetailContent({
   bidding,
   quotationDetails,
   quotationVendors,
-  biddingCompanies,
   prItems
 }: BiddingDetailContentProps) {
   const [dialogStates, setDialogStates] = React.useState({
     items: false,
     targetPrice: false,
-    selectionReason: false
+    selectionReason: false,
+    award: false
   })
 
   const [refreshTrigger, setRefreshTrigger] = React.useState(0)
@@ -50,11 +48,11 @@ export function BiddingDetailContent({
         biddingId={bidding.id}
         bidding={bidding}
         vendors={quotationVendors}
-        biddingCompanies={biddingCompanies}
         onRefresh={handleRefresh}
         onOpenItemsDialog={() => openDialog('items')}
         onOpenTargetPriceDialog={() => openDialog('targetPrice')}
         onOpenSelectionReasonDialog={() => openDialog('selectionReason')}
+        onOpenAwardDialog={() => openDialog('award')}
         onEdit={undefined}
         onDelete={undefined}
         onSelectWinner={undefined}
@@ -74,13 +72,6 @@ export function BiddingDetailContent({
         bidding={bidding}
         onSuccess={handleRefresh}
       />
-
-      <BiddingDetailSelectionReasonDialog
-        open={dialogStates.selectionReason}
-        onOpenChange={(open) => closeDialog('selectionReason')}
-        bidding={bidding}
-        onSuccess={handleRefresh}
-      />
     </div>
   )
 }
diff --git a/lib/bidding/detail/table/bidding-detail-selection-reason-dialog.tsx b/lib/bidding/detail/table/bidding-detail-selection-reason-dialog.tsx
deleted file mode 100644
index 0e7ca364..00000000
--- a/lib/bidding/detail/table/bidding-detail-selection-reason-dialog.tsx
+++ /dev/null
@@ -1,167 +0,0 @@
-'use client'
-
-import * as React from 'react'
-import { Bidding } from '@/db/schema'
-import { updateVendorSelectionReason } from '@/lib/bidding/detail/service'
-import {
-  Dialog,
-  DialogContent,
-  DialogDescription,
-  DialogFooter,
-  DialogHeader,
-  DialogTitle,
-} from '@/components/ui/dialog'
-import { Button } from '@/components/ui/button'
-import { Textarea } from '@/components/ui/textarea'
-import { Label } from '@/components/ui/label'
-import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'
-import { useToast } from '@/hooks/use-toast'
-import { useTransition } from 'react'
-
-interface BiddingDetailSelectionReasonDialogProps {
-  open: boolean
-  onOpenChange: (open: boolean) => void
-  bidding: Bidding
-  onSuccess: () => void
-}
-
-export function BiddingDetailSelectionReasonDialog({
-  open,
-  onOpenChange,
-  bidding,
-  onSuccess
-}: BiddingDetailSelectionReasonDialogProps) {
-  const { toast } = useToast()
-  const [isPending, startTransition] = useTransition()
-  const [selectedCompanyId, setSelectedCompanyId] = React.useState<number | null>(null)
-  const [selectionReason, setSelectionReason] = React.useState('')
-
-  // 낙찰된 업체 정보 조회 (실제로는 bidding_companies에서 isWinner가 true인 업체를 조회해야 함)
-  React.useEffect(() => {
-    if (open) {
-      // TODO: 실제로는 낙찰된 업체 정보를 조회하여 selectedCompanyId를 설정
-      setSelectedCompanyId(null)
-      setSelectionReason('')
-    }
-  }, [open])
-
-  const handleSave = () => {
-    if (!selectedCompanyId) {
-      toast({
-        title: '유효성 오류',
-        description: '선정된 업체를 선택해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    if (!selectionReason.trim()) {
-      toast({
-        title: '유효성 오류',
-        description: '선정 사유를 입력해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    startTransition(async () => {
-      const result = await updateVendorSelectionReason(
-        bidding.id,
-        selectedCompanyId,
-        selectionReason,
-        'current-user' // TODO: 실제 사용자 ID
-      )
-
-      if (result.success) {
-        toast({
-          title: '성공',
-          description: result.message,
-        })
-        onSuccess()
-        onOpenChange(false)
-      } else {
-        toast({
-          title: '오류',
-          description: result.error,
-          variant: 'destructive',
-        })
-      }
-    })
-  }
-
-  return (
-    <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-[600px]">
-        <DialogHeader>
-          <DialogTitle>업체 선정 사유</DialogTitle>
-          <DialogDescription>
-            입찰번호: {bidding.biddingNumber} - 낙찰 업체 선정 사유 입력
-          </DialogDescription>
-        </DialogHeader>
-
-        <div className="space-y-6">
-          {/* 낙찰 정보 */}
-          <div className="space-y-4">
-            <div className="grid grid-cols-2 gap-4">
-              <div>
-                <Label htmlFor="biddingNumber">입찰번호</Label>
-                <div className="text-sm font-mono mt-1 p-2 bg-muted rounded">
-                  {bidding.biddingNumber}
-                </div>
-              </div>
-              <div>
-                <Label htmlFor="projectName">프로젝트명</Label>
-                <div className="text-sm mt-1 p-2 bg-muted rounded">
-                  {bidding.projectName || '-'}
-                </div>
-              </div>
-            </div>
-          </div>
-
-          {/* 선정 업체 선택 */}
-          <div className="space-y-2">
-            <Label htmlFor="selectedCompany">선정된 업체</Label>
-            <Select
-              value={selectedCompanyId?.toString() || ''}
-              onValueChange={(value) => setSelectedCompanyId(Number(value))}
-            >
-              <SelectTrigger>
-                <SelectValue placeholder="선정된 업체를 선택하세요" />
-              </SelectTrigger>
-              <SelectContent>
-                {/* TODO: 실제로는 낙찰된 업체 목록을 조회하여 표시 */}
-                <SelectItem value="1">업체 A</SelectItem>
-                <SelectItem value="2">업체 B</SelectItem>
-                <SelectItem value="3">업체 C</SelectItem>
-              </SelectContent>
-            </Select>
-          </div>
-
-          {/* 선정 사유 입력 */}
-          <div className="space-y-2">
-            <Label htmlFor="selectionReason">선정 사유</Label>
-            <Textarea
-              id="selectionReason"
-              value={selectionReason}
-              onChange={(e) => setSelectionReason(e.target.value)}
-              placeholder="업체 선정 사유를 상세히 입력해주세요."
-              rows={6}
-            />
-            <div className="text-sm text-muted-foreground">
-              선정 사유는 추후 검토 및 감사에 활용됩니다. 구체적인 선정 기준과 이유를 명확히 기재해주세요.
-            </div>
-          </div>
-        </div>
-
-        <DialogFooter>
-          <Button variant="outline" onClick={() => onOpenChange(false)}>
-            취소
-          </Button>
-          <Button onClick={handleSave} disabled={isPending}>
-            저장
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-  )
-}
diff --git a/lib/bidding/detail/table/bidding-detail-target-price-dialog.tsx b/lib/bidding/detail/table/bidding-detail-target-price-dialog.tsx
index b9dd44dd..e2cf964b 100644
--- a/lib/bidding/detail/table/bidding-detail-target-price-dialog.tsx
+++ b/lib/bidding/detail/table/bidding-detail-target-price-dialog.tsx
@@ -2,7 +2,7 @@
 
 import * as React from 'react'
 import { Bidding } from '@/db/schema'
-import { QuotationDetails, updateTargetPrice } from '@/lib/bidding/detail/service'
+import { QuotationDetails, updateTargetPrice, calculateAndUpdateTargetPrice, getPreQuoteData } from '@/lib/bidding/detail/service'
 import {
   Dialog,
   DialogContent,
@@ -49,15 +49,69 @@ export function BiddingDetailTargetPriceDialog({
   const [calculationCriteria, setCalculationCriteria] = React.useState(
     (bidding as any).targetPriceCalculationCriteria || ''
   )
+  const [preQuoteData, setPreQuoteData] = React.useState<any>(null)
+  const [isAutoCalculating, setIsAutoCalculating] = React.useState(false)
 
-  // Dialog가 열릴 때 상태 초기화
+  // Dialog가 열릴 때 상태 초기화 및 사전견적 데이터 로드
   React.useEffect(() => {
     if (open) {
       setTargetPrice(bidding.targetPrice ? Number(bidding.targetPrice) : 0)
       setCalculationCriteria((bidding as any).targetPriceCalculationCriteria || '')
+      
+      // 사전견적 데이터 로드
+      const loadPreQuoteData = async () => {
+        try {
+          const data = await getPreQuoteData(bidding.id)
+          setPreQuoteData(data)
+        } catch (error) {
+          console.error('Failed to load pre-quote data:', error)
+        }
+      }
+      loadPreQuoteData()
     }
   }, [open, bidding])
 
+  // 자동 산정 함수
+  const handleAutoCalculate = () => {
+    setIsAutoCalculating(true)
+    
+    startTransition(async () => {
+      try {
+        const result = await calculateAndUpdateTargetPrice(
+          bidding.id,
+          'current-user' // TODO: 실제 사용자 ID
+        )
+
+        if (result.success && result.data) {
+          setTargetPrice(result.data.targetPrice)
+          setCalculationCriteria(result.data.criteria)
+          setPreQuoteData(result.data.preQuoteData)
+          
+          toast({
+            title: '성공',
+            description: result.message,
+          })
+          
+          onSuccess()
+        } else {
+          toast({
+            title: '오류',
+            description: result.error,
+            variant: 'destructive',
+          })
+        }
+      } catch (error) {
+        toast({
+          title: '오류',
+          description: '내정가 자동 산정에 실패했습니다.',
+          variant: 'destructive',
+        })
+      } finally {
+        setIsAutoCalculating(false)
+      }
+    })
+  }
+
   const handleSave = () => {
     // 필수값 검증
     if (targetPrice <= 0) {
@@ -121,6 +175,42 @@ export function BiddingDetailTargetPriceDialog({
         </DialogHeader>
 
         <div className="space-y-4">
+          {/* 사전견적 리스트 */}
+          {preQuoteData?.quotes && preQuoteData.quotes.length > 0 && (
+            <div className="mb-4">
+              <h4 className="text-sm font-medium mb-2">사전견적 현황</h4>
+              <div className="border rounded-lg">
+                <Table>
+                  <TableHeader>
+                    <TableRow>
+                      <TableHead>업체명</TableHead>
+                      <TableHead className="text-right">사전견적가</TableHead>
+                      <TableHead className="text-right">제출일</TableHead>
+                    </TableRow>
+                  </TableHeader>
+                  <TableBody>
+                    {preQuoteData.quotes.map((quote: any) => (
+                      <TableRow key={quote.id}>
+                        <TableCell className="font-medium">
+                          {quote.vendorName || `업체 ${quote.companyId}`}
+                        </TableCell>
+                        <TableCell className="text-right font-mono">
+                          {formatCurrency(Number(quote.preQuoteAmount))}
+                        </TableCell>
+                        <TableCell className="text-right text-sm text-muted-foreground">
+                          {quote.submittedAt 
+                            ? new Date(quote.submittedAt).toLocaleDateString('ko-KR')
+                            : '-'
+                          }
+                        </TableCell>
+                      </TableRow>
+                    ))}
+                  </TableBody>
+                </Table>
+              </div>
+            </div>
+          )}
+          
           <Table>
             <TableHeader>
               <TableRow>
@@ -129,29 +219,43 @@ export function BiddingDetailTargetPriceDialog({
               </TableRow>
             </TableHeader>
             <TableBody>
-              {/* 견적 통계 정보 */}
-              <TableRow>
-                <TableCell className="font-medium">예상액</TableCell>
-                <TableCell className="font-semibold">
-                  {quotationDetails?.estimatedPrice ? formatCurrency(quotationDetails.estimatedPrice) : '-'}
-                </TableCell>
-              </TableRow>
-              <TableRow>
-                <TableCell className="font-medium">최저견적가</TableCell>
-                <TableCell className="font-semibold text-green-600">
-                  {quotationDetails?.lowestQuote ? formatCurrency(quotationDetails.lowestQuote) : '-'}
-                </TableCell>
-              </TableRow>
+              {/* 사전견적 통계 정보 */}
               <TableRow>
-                <TableCell className="font-medium">평균견적가</TableCell>
+                <TableCell className="font-medium">사전견적 수</TableCell>
                 <TableCell className="font-semibold">
-                  {quotationDetails?.averageQuote ? formatCurrency(quotationDetails.averageQuote) : '-'}
+                  {preQuoteData?.quotationCount || 0}개
                 </TableCell>
               </TableRow>
+              {preQuoteData?.lowestQuote && (
+                <TableRow>
+                  <TableCell className="font-medium">최저 사전견적가</TableCell>
+                  <TableCell className="font-semibold text-green-600">
+                    {formatCurrency(preQuoteData.lowestQuote)}
+                  </TableCell>
+                </TableRow>
+              )}
+              {preQuoteData?.highestQuote && (
+                <TableRow>
+                  <TableCell className="font-medium">최고 사전견적가</TableCell>
+                  <TableCell className="font-semibold text-blue-600">
+                    {formatCurrency(preQuoteData.highestQuote)}
+                  </TableCell>
+                </TableRow>
+              )}
+              {preQuoteData?.averageQuote && (
+                <TableRow>
+                  <TableCell className="font-medium">평균 사전견적가</TableCell>
+                  <TableCell className="font-semibold">
+                    {formatCurrency(preQuoteData.averageQuote)}
+                  </TableCell>
+                </TableRow>
+              )}
+              
+              {/* 입찰 유형 */}
               <TableRow>
-                <TableCell className="font-medium">견적 수</TableCell>
+                <TableCell className="font-medium">입찰 유형</TableCell>
                 <TableCell className="font-semibold">
-                  {quotationDetails?.quotationCount || 0}개
+                  {bidding.biddingType || '-'}
                 </TableCell>
               </TableRow>
 
@@ -184,17 +288,33 @@ export function BiddingDetailTargetPriceDialog({
                 </TableCell>
                 <TableCell>
                   <div className="space-y-2">
-                    <Input
-                      id="targetPrice"
-                      type="number"
-                      value={targetPrice}
-                      onChange={(e) => setTargetPrice(Number(e.target.value))}
-                      placeholder="내정가를 입력하세요"
-                      className="w-full"
-                    />
+                    <div className="flex gap-2">
+                      <Input
+                        id="targetPrice"
+                        type="number"
+                        value={targetPrice}
+                        onChange={(e) => setTargetPrice(Number(e.target.value))}
+                        placeholder="내정가를 입력하세요"
+                        className="flex-1"
+                      />
+                      <Button
+                        type="button"
+                        variant="outline"
+                        onClick={handleAutoCalculate}
+                        disabled={isAutoCalculating || isPending || !preQuoteData?.quotationCount}
+                        className="whitespace-nowrap"
+                      >
+                        {isAutoCalculating ? '산정 중...' : '자동 산정'}
+                      </Button>
+                    </div>
                     <div className="text-sm text-muted-foreground">
                       {targetPrice > 0 ? formatCurrency(targetPrice) : ''}
                     </div>
+                    {preQuoteData?.quotationCount === 0 && (
+                      <div className="text-xs text-orange-600">
+                        사전견적 데이터가 없어 자동 산정이 불가능합니다.
+                      </div>
+                    )}
                   </div>
                 </TableCell>
               </TableRow>
@@ -211,7 +331,7 @@ export function BiddingDetailTargetPriceDialog({
                     id="calculationCriteria"
                     value={calculationCriteria}
                     onChange={(e) => setCalculationCriteria(e.target.value)}
-                    placeholder="내정가 산정 기준을 자세히 입력해주세요. (예: 최저견적가 대비 10% 상향 조정, 시장 평균가 고려 등)"
+                    placeholder="내정가 산정 기준을 자세히 입력해주세요. 자동 산정 시 입찰유형에 따른 기준이 자동 설정됩니다."
                     className="w-full min-h-[100px]"
                     rows={4}
                   />
@@ -228,7 +348,7 @@ export function BiddingDetailTargetPriceDialog({
           <Button variant="outline" onClick={() => onOpenChange(false)}>
             취소
           </Button>
-          <Button onClick={handleSave} disabled={isPending}>
+          <Button onClick={handleSave} disabled={isPending || isAutoCalculating}>
             저장
           </Button>
         </DialogFooter>
diff --git a/lib/bidding/detail/table/bidding-detail-vendor-columns.tsx b/lib/bidding/detail/table/bidding-detail-vendor-columns.tsx
index 6f02497f..bb1d2c62 100644
--- a/lib/bidding/detail/table/bidding-detail-vendor-columns.tsx
+++ b/lib/bidding/detail/table/bidding-detail-vendor-columns.tsx
@@ -23,13 +23,17 @@ interface GetVendorColumnsProps {
   onDelete: (vendor: QuotationVendor) => void
   onSelectWinner: (vendor: QuotationVendor) => void
   onViewPriceAdjustment?: (vendor: QuotationVendor) => void
+  onSendBidding?: (vendor: QuotationVendor) => void
+  onUpdateParticipation?: (vendor: QuotationVendor, participated: boolean) => void
 }
 
 export function getBiddingDetailVendorColumns({
   onEdit,
   onDelete,
   onSelectWinner,
-  onViewPriceAdjustment
+  onViewPriceAdjustment,
+  onSendBidding,
+  onUpdateParticipation
 }: GetVendorColumnsProps): ColumnDef<QuotationVendor>[] {
   return [
     {
@@ -66,13 +70,6 @@ export function getBiddingDetailVendorColumns({
       ),
     },
     {
-      accessorKey: 'contactPerson',
-      header: '담당자',
-      cell: ({ row }) => (
-        <div className="text-sm">{row.original.contactPerson || '-'}</div>
-      ),
-    },
-    {
       accessorKey: 'quotationAmount',
       header: '견적금액',
       cell: ({ row }) => (
@@ -82,15 +79,45 @@ export function getBiddingDetailVendorColumns({
       ),
     },
     {
+      accessorKey: 'biddingResult',
+      header: '입찰결과',
+      cell: ({ row }) => {
+        const isWinner = row.original.isWinner
+        if (isWinner === null || isWinner === undefined) {
+          return <div>-</div>
+        }
+        return (
+          <Badge variant={isWinner ? 'default' : 'secondary'} className={isWinner ? 'bg-green-600' : ''}>
+            {isWinner ? '낙찰' : '탈락'}
+          </Badge>
+        )
+      },
+    },
+    {
       accessorKey: 'awardRatio',
       header: '발주비율',
       cell: ({ row }) => (
         <div className="text-right">
-          {row.original.awardRatio ? `${row.original.awardRatio}%` : '-'}
+          {row.original.awardRatio !== null ? `${row.original.awardRatio}%` : '-'}
         </div>
       ),
     },
     {
+      accessorKey: 'isBiddingParticipated',
+      header: '입찰참여',
+      cell: ({ row }) => {
+        const participated = row.original.isBiddingParticipated
+        if (participated === null) {
+          return <Badge variant="outline">대기</Badge>
+        }
+        return (
+          <Badge variant={participated ? 'default' : 'destructive'}>
+            {participated ? '응찰' : '미응찰'}
+          </Badge>
+        )
+      },
+    },
+    {
       accessorKey: 'status',
       header: '상태',
       cell: ({ row }) => {
@@ -116,103 +143,6 @@ export function getBiddingDetailVendorColumns({
       ),
     },
     {
-      accessorKey: 'paymentTermsResponse',
-      header: '지급조건',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-32 truncate" title={row.original.paymentTermsResponse || ''}>
-          {row.original.paymentTermsResponse || '-'}
-        </div>
-      ),
-    },
-    {
-      accessorKey: 'taxConditionsResponse',
-      header: '세금조건',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-32 truncate" title={row.original.taxConditionsResponse || ''}>
-          {row.original.taxConditionsResponse || '-'}
-        </div>
-      ),
-    },
-    {
-      accessorKey: 'incotermsResponse',
-      header: '운송조건',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-24 truncate" title={row.original.incotermsResponse || ''}>
-          {row.original.incotermsResponse || '-'}
-        </div>
-      ),
-        },
-    {
-      accessorKey: 'isInitialResponse',
-      header: '초도여부',
-      cell: ({ row }) => (
-        <Badge variant={row.original.isInitialResponse ? 'default' : 'secondary'}>
-          {row.original.isInitialResponse ? 'Y' : 'N'}
-        </Badge>
-      ),
-    },
-    {
-      accessorKey: 'priceAdjustmentResponse',
-      header: '연동제',
-      cell: ({ row }) => {
-        const hasPriceAdjustment = row.original.priceAdjustmentResponse
-        return (
-          <div className="flex items-center gap-2">
-            <Badge variant={hasPriceAdjustment ? 'default' : 'secondary'}>
-              {hasPriceAdjustment ? '적용' : '미적용'}
-            </Badge>
-            {hasPriceAdjustment && onViewPriceAdjustment && (
-              <Button
-                variant="ghost"
-                size="sm"
-                onClick={() => onViewPriceAdjustment(row.original)}
-                className="h-6 px-2 text-xs"
-              >
-                상세
-              </Button>
-            )}
-          </div>
-        )
-      },
-    },
-    {
-      accessorKey: 'proposedContractDeliveryDate',
-      header: '제안납기일',
-      cell: ({ row }) => (
-        <div className="text-sm">
-          {row.original.proposedContractDeliveryDate ? 
-            new Date(row.original.proposedContractDeliveryDate).toLocaleDateString('ko-KR') : '-'}
-        </div>
-      ),
-    },
-    {
-      accessorKey: 'proposedShippingPort',
-      header: '제안선적지',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-24 truncate" title={row.original.proposedShippingPort || ''}>
-          {row.original.proposedShippingPort || '-'}
-        </div>
-      ),
-    },
-    {
-      accessorKey: 'proposedDestinationPort',
-      header: '제안도착지',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-24 truncate" title={row.original.proposedDestinationPort || ''}>
-          {row.original.proposedDestinationPort || '-'}
-        </div>
-      ),
-    },
-    {
-      accessorKey: 'sparePartResponse',
-      header: '스페어파트',
-      cell: ({ row }) => (
-        <div className="text-sm max-w-24 truncate" title={row.original.sparePartResponse || ''}>
-          {row.original.sparePartResponse || '-'}
-        </div>
-      ),
-    },
-    {
       id: 'actions',
       header: '작업',
       cell: ({ row }) => {
@@ -229,21 +159,42 @@ export function getBiddingDetailVendorColumns({
             <DropdownMenuContent align="end">
               <DropdownMenuLabel>작업</DropdownMenuLabel>
               <DropdownMenuItem onClick={() => onEdit(vendor)}>
-                <Edit className="mr-2 h-4 w-4" />
-                수정
+                발주비율 산정
               </DropdownMenuItem>
               {vendor.status !== 'selected' && (
                 <DropdownMenuItem onClick={() => onSelectWinner(vendor)}>
-                  <Trophy className="mr-2 h-4 w-4" />
                   낙찰 선정
                 </DropdownMenuItem>
               )}
+              
+              {/* 입찰 참여여부 관리 */}
+              {vendor.isBiddingParticipated === null && onUpdateParticipation && (
+                <>
+                  <DropdownMenuSeparator />
+                  <DropdownMenuItem onClick={() => onUpdateParticipation(vendor, true)}>
+                    응찰 설정
+                  </DropdownMenuItem>
+                  <DropdownMenuItem onClick={() => onUpdateParticipation(vendor, false)}>
+                    미응찰 설정
+                  </DropdownMenuItem>
+                </>
+              )}
+              
+              {/* 입찰 보내기 (응찰한 업체만) */}
+              {vendor.isBiddingParticipated === true && onSendBidding && (
+                <>
+                  <DropdownMenuSeparator />
+                  <DropdownMenuItem onClick={() => onSendBidding(vendor)}>
+                    입찰 보내기
+                  </DropdownMenuItem>
+                </>
+              )}
+              
               <DropdownMenuSeparator />
               <DropdownMenuItem
                 onClick={() => onDelete(vendor)}
                 className="text-destructive"
               >
-                <Trash2 className="mr-2 h-4 w-4" />
                 삭제
               </DropdownMenuItem>
             </DropdownMenuContent>
diff --git a/lib/bidding/detail/table/bidding-detail-vendor-create-dialog.tsx b/lib/bidding/detail/table/bidding-detail-vendor-create-dialog.tsx
index bd0f3684..75b1f67b 100644
--- a/lib/bidding/detail/table/bidding-detail-vendor-create-dialog.tsx
+++ b/lib/bidding/detail/table/bidding-detail-vendor-create-dialog.tsx
@@ -35,8 +35,7 @@ import {
 } from '@/components/ui/popover'
 import { Check, ChevronsUpDown, Search } from 'lucide-react'
 import { cn } from '@/lib/utils'
-import { createQuotationVendor } from '@/lib/bidding/detail/service'
-import { createQuotationVendorSchema } from '@/lib/bidding/validation'
+import { createBiddingDetailVendor } from '@/lib/bidding/detail/service'
 import { searchVendors } from '@/lib/vendors/service'
 import { useToast } from '@/hooks/use-toast'
 import { useTransition } from 'react'
@@ -70,22 +69,9 @@ export function BiddingDetailVendorCreateDialog({
   const [vendorSearchOpen, setVendorSearchOpen] = React.useState(false)
   const [vendorSearchValue, setVendorSearchValue] = React.useState('')
 
-  // 폼 상태
+  // 폼 상태 (간소화 - 필수 항목만)
   const [formData, setFormData] = React.useState({
-    quotationAmount: 0,
-    currency: 'KRW',
-    awardRatio: 0,
-    status: 'pending' as const,
-    // 입찰 조건 (companyConditionResponses 기반)
-    paymentTermsResponse: '',
-    taxConditionsResponse: '',
-    proposedContractDeliveryDate: '',
-    priceAdjustmentResponse: false,
-    incotermsResponse: '',
-    proposedShippingPort: '',
-    proposedDestinationPort: '',
-    sparePartResponse: '',
-    additionalProposals: '',
+    awardRatio: 100, // 기본 100%
   })
 
   // Vendor 검색
@@ -125,28 +111,13 @@ export function BiddingDetailVendorCreateDialog({
       return
     }
 
-    const result = createQuotationVendorSchema.safeParse({
-      biddingId,
-      vendorId: selectedVendor.id,
-      vendorName: selectedVendor.vendorName,
-      vendorCode: selectedVendor.vendorCode,
-      contactPerson: '',
-      contactEmail: '',
-      contactPhone: '',
-      ...formData,
-    })
-
-    if (!result.success) {
-      toast({
-        title: '유효성 오류',
-        description: result.error.issues[0]?.message || '입력값을 확인해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
 
     startTransition(async () => {
-      const response = await createQuotationVendor(result.data, 'current-user')
+      const response = await createBiddingDetailVendor(
+        biddingId,
+        selectedVendor.id,
+        'current-user'
+      )
 
       if (response.success) {
         toast({
@@ -170,20 +141,7 @@ export function BiddingDetailVendorCreateDialog({
     setSelectedVendor(null)
     setVendorSearchValue('')
     setFormData({
-      quotationAmount: 0,
-      currency: 'KRW',
-      awardRatio: 0,
-      status: 'pending',
-      // 입찰 조건 초기화
-      paymentTermsResponse: '',
-      taxConditionsResponse: '',
-      proposedContractDeliveryDate: '',
-      priceAdjustmentResponse: false,
-      incotermsResponse: '',
-      proposedShippingPort: '',
-      proposedDestinationPort: '',
-      sparePartResponse: '',
-      additionalProposals: '',
+      awardRatio: 100, // 기본 100%
     })
   }
 
@@ -250,167 +208,6 @@ export function BiddingDetailVendorCreateDialog({
               </PopoverContent>
             </Popover>
           </div>
-
-          {/* 견적 정보 입력 */}
-          <div className="grid grid-cols-2 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="quotationAmount">견적금액</Label>
-              <Input
-                id="quotationAmount"
-                type="number"
-                value={formData.quotationAmount}
-                onChange={(e) => setFormData({ ...formData, quotationAmount: Number(e.target.value) })}
-                placeholder="견적금액을 입력하세요"
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="currency">통화</Label>
-              <Select value={formData.currency} onValueChange={(value) => setFormData({ ...formData, currency: value })}>
-                <SelectTrigger>
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="KRW">KRW</SelectItem>
-                  <SelectItem value="USD">USD</SelectItem>
-                  <SelectItem value="EUR">EUR</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-          </div>
-
-          <div className="grid grid-cols-2 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="awardRatio">발주비율 (%)</Label>
-              <Input
-                id="awardRatio"
-                type="number"
-                min="0"
-                max="100"
-                value={formData.awardRatio}
-                onChange={(e) => setFormData({ ...formData, awardRatio: Number(e.target.value) })}
-                placeholder="발주비율을 입력하세요"
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="status">상태</Label>
-              <Select value={formData.status} onValueChange={(value: any) => setFormData({ ...formData, status: value })}>
-                <SelectTrigger>
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="pending">대기</SelectItem>
-                  <SelectItem value="submitted">제출</SelectItem>
-                  <SelectItem value="selected">선정</SelectItem>
-                  <SelectItem value="rejected">거절</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-          </div>
-
-
-
-          {/* 입찰 조건 섹션 */}
-          <div className="col-span-2 pt-4 border-t">
-            <h3 className="text-lg font-medium mb-4">입찰 조건 설정</h3>
-            
-            <div className="grid grid-cols-2 gap-4">
-              <div className="space-y-2">
-                <Label htmlFor="paymentTermsResponse">지급조건</Label>
-                <Input
-                  id="paymentTermsResponse"
-                  value={formData.paymentTermsResponse}
-                  onChange={(e) => setFormData({ ...formData, paymentTermsResponse: e.target.value })}
-                  placeholder="지급조건을 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="taxConditionsResponse">세금조건</Label>
-                <Input
-                  id="taxConditionsResponse"
-                  value={formData.taxConditionsResponse}
-                  onChange={(e) => setFormData({ ...formData, taxConditionsResponse: e.target.value })}
-                  placeholder="세금조건을 입력하세요"
-                />
-              </div>
-            </div>
-
-            <div className="grid grid-cols-2 gap-4 mt-4">
-              <div className="space-y-2">
-                <Label htmlFor="incotermsResponse">운송조건 (Incoterms)</Label>
-                <Input
-                  id="incotermsResponse"
-                  value={formData.incotermsResponse}
-                  onChange={(e) => setFormData({ ...formData, incotermsResponse: e.target.value })}
-                  placeholder="운송조건을 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="proposedContractDeliveryDate">제안 계약납기일</Label>
-                <Input
-                  id="proposedContractDeliveryDate"
-                  type="date"
-                  value={formData.proposedContractDeliveryDate}
-                  onChange={(e) => setFormData({ ...formData, proposedContractDeliveryDate: e.target.value })}
-                />
-              </div>
-            </div>
-
-            <div className="grid grid-cols-2 gap-4 mt-4">
-              <div className="space-y-2">
-                <Label htmlFor="proposedShippingPort">제안 선적지</Label>
-                <Input
-                  id="proposedShippingPort"
-                  value={formData.proposedShippingPort}
-                  onChange={(e) => setFormData({ ...formData, proposedShippingPort: e.target.value })}
-                  placeholder="선적지를 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="proposedDestinationPort">제안 도착지</Label>
-                <Input
-                  id="proposedDestinationPort"
-                  value={formData.proposedDestinationPort}
-                  onChange={(e) => setFormData({ ...formData, proposedDestinationPort: e.target.value })}
-                  placeholder="도착지를 입력하세요"
-                />
-              </div>
-            </div>
-
-            <div className="space-y-2 mt-4">
-              <Label htmlFor="sparePartResponse">스페어파트 응답</Label>
-              <Input
-                id="sparePartResponse"
-                value={formData.sparePartResponse}
-                onChange={(e) => setFormData({ ...formData, sparePartResponse: e.target.value })}
-                placeholder="스페어파트 관련 응답을 입력하세요"
-              />
-            </div>
-
-            <div className="space-y-2 mt-4">
-              <Label htmlFor="additionalProposals">추가 제안사항</Label>
-              <Textarea
-                id="additionalProposals"
-                value={formData.additionalProposals}
-                onChange={(e) => setFormData({ ...formData, additionalProposals: e.target.value })}
-                placeholder="추가 제안사항을 입력하세요"
-                rows={3}
-              />
-            </div>
-
-            <div className="flex items-center space-x-2 mt-4">
-              <Checkbox
-                id="priceAdjustmentResponse"
-                checked={formData.priceAdjustmentResponse}
-                onCheckedChange={(checked) =>
-                  setFormData({ ...formData, priceAdjustmentResponse: !!checked })
-                }
-              />
-              <Label htmlFor="priceAdjustmentResponse">연동제 적용</Label>
-            </div>
-          </div>
         </div>
         <DialogFooter>
           <Button variant="outline" onClick={() => onOpenChange(false)}>
diff --git a/lib/bidding/detail/table/bidding-detail-vendor-edit-dialog.tsx b/lib/bidding/detail/table/bidding-detail-vendor-edit-dialog.tsx
index 75f53503..b10212ab 100644
--- a/lib/bidding/detail/table/bidding-detail-vendor-edit-dialog.tsx
+++ b/lib/bidding/detail/table/bidding-detail-vendor-edit-dialog.tsx
@@ -21,8 +21,7 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select'
-import { updateQuotationVendor } from '@/lib/bidding/detail/service'
-import { updateQuotationVendorSchema } from '@/lib/bidding/validation'
+import { updateBiddingDetailVendor } from '@/lib/bidding/detail/service'
 import { QuotationVendor } from '@/lib/bidding/detail/service'
 import { useToast } from '@/hooks/use-toast'
 import { useTransition } from 'react'
@@ -43,52 +42,16 @@ export function BiddingDetailVendorEditDialog({
   const { toast } = useToast()
   const [isPending, startTransition] = useTransition()
 
-  // 폼 상태
+  // 폼 상태 (간소화 - 수정 가능한 필드만)
   const [formData, setFormData] = React.useState({
-    vendorName: '',
-    vendorCode: '',
-    contactPerson: '',
-    contactEmail: '',
-    contactPhone: '',
-    quotationAmount: 0,
-    currency: 'KRW',
     awardRatio: 0,
-    status: 'pending' as const,
-    // 입찰 조건 (companyConditionResponses 기반)
-    paymentTermsResponse: '',
-    taxConditionsResponse: '',
-    proposedContractDeliveryDate: '',
-    priceAdjustmentResponse: false,
-    incotermsResponse: '',
-    proposedShippingPort: '',
-    proposedDestinationPort: '',
-    sparePartResponse: '',
-    additionalProposals: '',
   })
 
   // vendor가 변경되면 폼 데이터 업데이트
   React.useEffect(() => {
     if (vendor) {
       setFormData({
-        vendorName: vendor.vendorName,
-        vendorCode: vendor.vendorCode,
-        contactPerson: vendor.contactPerson || '',
-        contactEmail: vendor.contactEmail || '',
-        contactPhone: vendor.contactPhone || '',
-        quotationAmount: vendor.quotationAmount,
-        currency: vendor.currency,
         awardRatio: vendor.awardRatio || 0,
-        status: vendor.status,
-        // 입찰 조건 데이터 (vendor에서 가져오거나 기본값)
-        paymentTermsResponse: '',
-        taxConditionsResponse: '',
-        proposedContractDeliveryDate: '',
-        priceAdjustmentResponse: false,
-        incotermsResponse: '',
-        proposedShippingPort: '',
-        proposedDestinationPort: '',
-        sparePartResponse: '',
-        additionalProposals: '',
       })
     }
   }, [vendor])
@@ -96,22 +59,15 @@ export function BiddingDetailVendorEditDialog({
   const handleEdit = () => {
     if (!vendor) return
 
-    const result = updateQuotationVendorSchema.safeParse({
-      id: vendor.id,
-      ...formData,
-    })
-
-    if (!result.success) {
-      toast({
-        title: '유효성 오류',
-        description: result.error.issues[0]?.message || '입력값을 확인해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
 
     startTransition(async () => {
-      const response = await updateQuotationVendor(vendor.id, result.data, 'current-user')
+      const response = await updateBiddingDetailVendor(
+        vendor.id,
+        vendor.quotationAmount, // 기존 견적금액 유지
+        vendor.currency, // 기존 통화 유지
+        formData.awardRatio,
+        'current-user' // TODO: 실제 사용자 ID
+      )
 
       if (response.success) {
         toast({
@@ -134,209 +90,40 @@ export function BiddingDetailVendorEditDialog({
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent className="sm:max-w-[600px]">
         <DialogHeader>
-          <DialogTitle>협력업체 수정</DialogTitle>
+          <DialogTitle>협력업체 발주비율 산정</DialogTitle>
           <DialogDescription>
-            협력업체 정보를 수정해주세요.
+            협력업체 발주비율을 산정해주세요.
           </DialogDescription>
         </DialogHeader>
         <div className="grid gap-4 py-4">
-          <div className="grid grid-cols-2 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="edit-vendorName">업체명</Label>
-              <Input
-                id="edit-vendorName"
-                value={formData.vendorName}
-                onChange={(e) => setFormData({ ...formData, vendorName: e.target.value })}
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="edit-vendorCode">업체코드</Label>
-              <Input
-                id="edit-vendorCode"
-                value={formData.vendorCode}
-                onChange={(e) => setFormData({ ...formData, vendorCode: e.target.value })}
-              />
-            </div>
-          </div>
-          <div className="grid grid-cols-3 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="edit-contactPerson">담당자</Label>
-              <Input
-                id="edit-contactPerson"
-                value={formData.contactPerson}
-                onChange={(e) => setFormData({ ...formData, contactPerson: e.target.value })}
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="edit-contactEmail">이메일</Label>
-              <Input
-                id="edit-contactEmail"
-                type="email"
-                value={formData.contactEmail}
-                onChange={(e) => setFormData({ ...formData, contactEmail: e.target.value })}
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="edit-contactPhone">연락처</Label>
-              <Input
-                id="edit-contactPhone"
-                value={formData.contactPhone}
-                onChange={(e) => setFormData({ ...formData, contactPhone: e.target.value })}
-              />
-            </div>
-          </div>
-          <div className="grid grid-cols-2 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="edit-quotationAmount">견적금액</Label>
-              <Input
-                id="edit-quotationAmount"
-                type="number"
-                value={formData.quotationAmount}
-                onChange={(e) => setFormData({ ...formData, quotationAmount: Number(e.target.value) })}
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="edit-currency">통화</Label>
-              <Select value={formData.currency} onValueChange={(value) => setFormData({ ...formData, currency: value })}>
-                <SelectTrigger>
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="KRW">KRW</SelectItem>
-                  <SelectItem value="USD">USD</SelectItem>
-                  <SelectItem value="EUR">EUR</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-          </div>
-          <div className="grid grid-cols-2 gap-4">
-            <div className="space-y-2">
-              <Label htmlFor="edit-awardRatio">발주비율 (%)</Label>
-              <Input
-                id="edit-awardRatio"
-                type="number"
-                min="0"
-                max="100"
-                value={formData.awardRatio}
-                onChange={(e) => setFormData({ ...formData, awardRatio: Number(e.target.value) })}
-              />
-            </div>
-            <div className="space-y-2">
-              <Label htmlFor="edit-status">상태</Label>
-              <Select value={formData.status} onValueChange={(value: any) => setFormData({ ...formData, status: value })}>
-                <SelectTrigger>
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="pending">대기</SelectItem>
-                  <SelectItem value="submitted">제출</SelectItem>
-                  <SelectItem value="selected">선정</SelectItem>
-                  <SelectItem value="rejected">거절</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-          </div>
-          {/* 입찰 조건 섹션 */}
-          <div className="col-span-2 pt-4 border-t">
-            <h3 className="text-lg font-medium mb-4">입찰 조건 설정</h3>
-            
-            <div className="grid grid-cols-2 gap-4">
-              <div className="space-y-2">
-                <Label htmlFor="edit-paymentTermsResponse">지급조건</Label>
-                <Input
-                  id="edit-paymentTermsResponse"
-                  value={formData.paymentTermsResponse}
-                  onChange={(e) => setFormData({ ...formData, paymentTermsResponse: e.target.value })}
-                  placeholder="지급조건을 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="edit-taxConditionsResponse">세금조건</Label>
-                <Input
-                  id="edit-taxConditionsResponse"
-                  value={formData.taxConditionsResponse}
-                  onChange={(e) => setFormData({ ...formData, taxConditionsResponse: e.target.value })}
-                  placeholder="세금조건을 입력하세요"
-                />
-              </div>
-            </div>
-
-            <div className="grid grid-cols-2 gap-4 mt-4">
-              <div className="space-y-2">
-                <Label htmlFor="edit-incotermsResponse">운송조건 (Incoterms)</Label>
-                <Input
-                  id="edit-incotermsResponse"
-                  value={formData.incotermsResponse}
-                  onChange={(e) => setFormData({ ...formData, incotermsResponse: e.target.value })}
-                  placeholder="운송조건을 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="edit-proposedContractDeliveryDate">제안 계약납기일</Label>
-                <Input
-                  id="edit-proposedContractDeliveryDate"
-                  type="date"
-                  value={formData.proposedContractDeliveryDate}
-                  onChange={(e) => setFormData({ ...formData, proposedContractDeliveryDate: e.target.value })}
-                />
-              </div>
-            </div>
-
-            <div className="grid grid-cols-2 gap-4 mt-4">
-              <div className="space-y-2">
-                <Label htmlFor="edit-proposedShippingPort">제안 선적지</Label>
-                <Input
-                  id="edit-proposedShippingPort"
-                  value={formData.proposedShippingPort}
-                  onChange={(e) => setFormData({ ...formData, proposedShippingPort: e.target.value })}
-                  placeholder="선적지를 입력하세요"
-                />
-              </div>
-              
-              <div className="space-y-2">
-                <Label htmlFor="edit-proposedDestinationPort">제안 도착지</Label>
-                <Input
-                  id="edit-proposedDestinationPort"
-                  value={formData.proposedDestinationPort}
-                  onChange={(e) => setFormData({ ...formData, proposedDestinationPort: e.target.value })}
-                  placeholder="도착지를 입력하세요"
-                />
+          {/* 읽기 전용 업체 정보 */}
+          {vendor && (
+            <div className="bg-muted/50 rounded-lg p-3 border">
+              <h4 className="font-medium mb-2">협력업체 정보</h4>
+              <div className="grid grid-cols-2 gap-4 text-sm">
+                <div>
+                  <span className="text-muted-foreground">협력업체명:</span> {vendor.vendorName}
+                </div>
+                <div>
+                  <span className="text-muted-foreground">협력업체코드:</span> {vendor.vendorCode}
+                </div>
               </div>
             </div>
-
-            <div className="space-y-2 mt-4">
-              <Label htmlFor="edit-sparePartResponse">스페어파트 응답</Label>
-              <Input
-                id="edit-sparePartResponse"
-                value={formData.sparePartResponse}
-                onChange={(e) => setFormData({ ...formData, sparePartResponse: e.target.value })}
-                placeholder="스페어파트 관련 응답을 입력하세요"
-              />
-            </div>
-
-            <div className="space-y-2 mt-4">
-              <Label htmlFor="edit-additionalProposals">추가 제안사항</Label>
-              <Textarea
-                id="edit-additionalProposals"
-                value={formData.additionalProposals}
-                onChange={(e) => setFormData({ ...formData, additionalProposals: e.target.value })}
-                placeholder="추가 제안사항을 입력하세요"
-                rows={3}
-              />
-            </div>
-
-            <div className="flex items-center space-x-2 mt-4">
-              <Checkbox
-                id="edit-priceAdjustmentResponse"
-                checked={formData.priceAdjustmentResponse}
-                onCheckedChange={(checked) =>
-                  setFormData({ ...formData, priceAdjustmentResponse: !!checked })
-                }
-              />
-              <Label htmlFor="edit-priceAdjustmentResponse">연동제 적용</Label>
-            </div>
+          )}
+
+          {/* 수정 가능한 필드들 */}
+
+          <div className="space-y-2">
+            <Label htmlFor="edit-awardRatio">발주비율 (%)</Label>
+            <Input
+              id="edit-awardRatio"
+              type="number"
+              min="0"
+              max="100"
+              value={formData.awardRatio}
+              onChange={(e) => setFormData({ ...formData, awardRatio: Number(e.target.value) })}
+              placeholder="발주비율을 입력하세요"
+            />
           </div>
         </div>
         <DialogFooter>
@@ -344,7 +131,7 @@ export function BiddingDetailVendorEditDialog({
             취소
           </Button>
           <Button onClick={handleEdit} disabled={isPending}>
-            수정
+            산정
           </Button>
         </DialogFooter>
       </DialogContent>
diff --git a/lib/bidding/detail/table/bidding-detail-vendor-table.tsx b/lib/bidding/detail/table/bidding-detail-vendor-table.tsx
index b1f0b08e..dd1ae94b 100644
--- a/lib/bidding/detail/table/bidding-detail-vendor-table.tsx
+++ b/lib/bidding/detail/table/bidding-detail-vendor-table.tsx
@@ -8,6 +8,7 @@ import { DataTableAdvancedToolbar } from '@/components/data-table/data-table-adv
 import { BiddingDetailVendorToolbarActions } from './bidding-detail-vendor-toolbar-actions'
 import { BiddingDetailVendorCreateDialog } from './bidding-detail-vendor-create-dialog'
 import { BiddingDetailVendorEditDialog } from './bidding-detail-vendor-edit-dialog'
+import { BiddingAwardDialog } from './bidding-award-dialog'
 import { getBiddingDetailVendorColumns } from './bidding-detail-vendor-columns'
 import { QuotationVendor, getPriceAdjustmentFormByBiddingCompanyId } from '@/lib/bidding/detail/service'
 import { Bidding } from '@/db/schema'
@@ -28,6 +29,7 @@ interface BiddingDetailVendorTableContentProps {
   onOpenItemsDialog: () => void
   onOpenTargetPriceDialog: () => void
   onOpenSelectionReasonDialog: () => void
+  onOpenAwardDialog: () => void
   onEdit?: (vendor: QuotationVendor) => void
   onDelete?: (vendor: QuotationVendor) => void
   onSelectWinner?: (vendor: QuotationVendor) => void
@@ -92,6 +94,7 @@ export function BiddingDetailVendorTableContent({
   onOpenItemsDialog,
   onOpenTargetPriceDialog,
   onOpenSelectionReasonDialog,
+  onOpenAwardDialog,
   onEdit,
   onDelete,
   onSelectWinner
@@ -100,6 +103,7 @@ export function BiddingDetailVendorTableContent({
   const [isPending, startTransition] = useTransition()
   const [selectedVendor, setSelectedVendor] = React.useState<QuotationVendor | null>(null)
   const [isEditDialogOpen, setIsEditDialogOpen] = React.useState(false)
+  const [isAwardDialogOpen, setIsAwardDialogOpen] = React.useState(false)
   const [priceAdjustmentData, setPriceAdjustmentData] = React.useState<any>(null)
   const [isPriceAdjustmentDialogOpen, setIsPriceAdjustmentDialogOpen] = React.useState(false)
 
@@ -240,6 +244,7 @@ export function BiddingDetailVendorTableContent({
             onOpenItemsDialog={onOpenItemsDialog}
             onOpenTargetPriceDialog={onOpenTargetPriceDialog}
             onOpenSelectionReasonDialog={onOpenSelectionReasonDialog}
+            onOpenAwardDialog={() => setIsAwardDialogOpen(true)}
             onSuccess={onRefresh}
           />
         </DataTableAdvancedToolbar>
@@ -252,6 +257,13 @@ export function BiddingDetailVendorTableContent({
         onSuccess={onRefresh}
       />
 
+      <BiddingAwardDialog
+        biddingId={biddingId}
+        open={isAwardDialogOpen}
+        onOpenChange={setIsAwardDialogOpen}
+        onSuccess={onRefresh}
+      />
+
       <PriceAdjustmentDialog
         open={isPriceAdjustmentDialogOpen}
         onOpenChange={setIsPriceAdjustmentDialogOpen}
diff --git a/lib/bidding/detail/table/bidding-detail-vendor-toolbar-actions.tsx b/lib/bidding/detail/table/bidding-detail-vendor-toolbar-actions.tsx
index ca9ffc60..8cdec191 100644
--- a/lib/bidding/detail/table/bidding-detail-vendor-toolbar-actions.tsx
+++ b/lib/bidding/detail/table/bidding-detail-vendor-toolbar-actions.tsx
@@ -5,8 +5,8 @@ import { type Table } from "@tanstack/react-table"
 import { useRouter } from "next/navigation"
 import { useTransition } from "react"
 import { Button } from "@/components/ui/button"
-import { Plus, Send, RotateCcw, XCircle } from "lucide-react"
-import { QuotationVendor, registerBidding, markAsDisposal, createRebidding } from "@/lib/bidding/detail/service"
+import { Plus, Send, RotateCcw, XCircle, Trophy } from "lucide-react"
+import { QuotationVendor, registerBidding, markAsDisposal, createRebidding, awardBidding } from "@/lib/bidding/detail/service"
 import { BiddingDetailVendorCreateDialog } from "./bidding-detail-vendor-create-dialog"
 import { Bidding } from "@/db/schema"
 import { useToast } from "@/hooks/use-toast"
@@ -17,7 +17,7 @@ interface BiddingDetailVendorToolbarActionsProps {
   bidding: Bidding
   onOpenItemsDialog: () => void
   onOpenTargetPriceDialog: () => void
-  onOpenSelectionReasonDialog: () => void
+  onOpenAwardDialog: () => void
   onSuccess: () => void
 }
 
@@ -27,7 +27,7 @@ export function BiddingDetailVendorToolbarActions({
   bidding,
   onOpenItemsDialog,
   onOpenTargetPriceDialog,
-  onOpenSelectionReasonDialog,
+  onOpenAwardDialog,
   onSuccess
 }: BiddingDetailVendorToolbarActionsProps) {
   const router = useRouter()
@@ -40,18 +40,6 @@ export function BiddingDetailVendorToolbarActions({
   }
 
   const handleRegister = () => {
-    // 상태 검증
-    if (bidding.status !== 'bidding_generated') {
-      toast({
-        title: '실행 불가',
-        description: '입찰 등록은 입찰 생성 상태에서만 가능합니다.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    if (!confirm('입찰을 등록하시겠습니까?')) return
-
     startTransition(async () => {
       const result = await registerBidding(bidding.id, 'current-user') // TODO: 실제 사용자 ID
 
@@ -72,18 +60,6 @@ export function BiddingDetailVendorToolbarActions({
   }
 
   const handleMarkAsDisposal = () => {
-    // 상태 검증
-    if (bidding.status !== 'bidding_closed') {
-      toast({
-        title: '실행 불가',
-        description: '유찰 처리는 입찰 마감 상태에서만 가능합니다.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    if (!confirm('입찰을 유찰 처리하시겠습니까?')) return
-
     startTransition(async () => {
       const result = await markAsDisposal(bidding.id, 'current-user') // TODO: 실제 사용자 ID
 
@@ -104,18 +80,6 @@ export function BiddingDetailVendorToolbarActions({
   }
 
   const handleCreateRebidding = () => {
-    // 상태 검증
-    if (bidding.status !== 'bidding_disposal') {
-      toast({
-        title: '실행 불가',
-        description: '재입찰은 유찰 상태에서만 가능합니다.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    if (!confirm('재입찰을 생성하시겠습니까?')) return
-
     startTransition(async () => {
       const result = await createRebidding(bidding.id, 'current-user') // TODO: 실제 사용자 ID
 
@@ -124,11 +88,8 @@ export function BiddingDetailVendorToolbarActions({
           title: '성공',
           description: result.message,
         })
-        if (result.data?.redirectTo) {
-          router.push(result.data.redirectTo)
-        } else {
-          router.refresh()
-        }
+        router.refresh()
+        onSuccess()
       } else {
         toast({
           title: '오류',
@@ -143,7 +104,7 @@ export function BiddingDetailVendorToolbarActions({
     <>
       <div className="flex items-center gap-2">
         {/* 상태별 액션 버튼 */}
-        {/* {bidding.status === 'bidding_generated' && (
+         {bidding.status === 'bidding_generated' && (
           <Button
             variant="default"
             size="sm"
@@ -156,15 +117,26 @@ export function BiddingDetailVendorToolbarActions({
         )}
 
         {bidding.status === 'bidding_closed' && (
-          <Button
-            variant="destructive"
-            size="sm"
-            onClick={handleMarkAsDisposal}
-            disabled={isPending}
-          >
-            <XCircle className="mr-2 h-4 w-4" />
-            유찰 처리
-          </Button>
+          <>
+            <Button
+              variant="destructive"
+              size="sm"
+              onClick={handleMarkAsDisposal}
+              disabled={isPending}
+            >
+              <XCircle className="mr-2 h-4 w-4" />
+              유찰
+            </Button>
+            <Button
+              variant="default"
+              size="sm"
+              onClick={onOpenAwardDialog}
+              disabled={isPending}
+            >
+              <Trophy className="mr-2 h-4 w-4" />
+              낙찰
+            </Button>
+          </>
         )}
 
         {bidding.status === 'bidding_disposal' && (
@@ -175,11 +147,18 @@ export function BiddingDetailVendorToolbarActions({
             disabled={isPending}
           >
             <RotateCcw className="mr-2 h-4 w-4" />
-            재입찰 생성
+            재입찰
           </Button>
-        )} */}
+        )}
+
+        {/* 구분선 */}
+        {(bidding.status === 'bidding_generated' || 
+          bidding.status === 'bidding_closed' || 
+          bidding.status === 'bidding_disposal') && (
+          <div className="h-4 w-px bg-border mx-1" />
+        )}
 
-        {/* 기존 버튼들 */}
+        {/* 공통 관리 버튼들 */}
         <Button
           variant="outline"
           size="sm"
@@ -197,13 +176,6 @@ export function BiddingDetailVendorToolbarActions({
         <Button
           variant="outline"
           size="sm"
-          onClick={onOpenSelectionReasonDialog}
-        >
-          선정 사유
-        </Button>
-        <Button
-          variant="default"
-          size="sm"
           onClick={handleCreateVendor}
         >
           <Plus className="mr-2 h-4 w-4" />
diff --git a/lib/bidding/detail/table/components/award-simple-file-upload.tsx b/lib/bidding/detail/table/components/award-simple-file-upload.tsx
new file mode 100644
index 00000000..c19918f6
--- /dev/null
+++ b/lib/bidding/detail/table/components/award-simple-file-upload.tsx
@@ -0,0 +1,307 @@
+'use client'
+
+import * as React from 'react'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Badge } from '@/components/ui/badge'
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from '@/components/ui/table'
+import {
+  Upload,
+  FileText,
+  Download,
+  Trash2
+} from 'lucide-react'
+import { useToast } from '@/hooks/use-toast'
+import { useTransition } from 'react'
+import { 
+  uploadAwardDocument, 
+  getAwardDocuments,
+  getAwardDocumentForDownload,
+  deleteAwardDocument
+} from '../../service'
+import { downloadFile } from '@/lib/file-download'
+
+interface UploadedDocument {
+  id: number
+  fileName: string
+  originalFileName: string
+  fileSize: number | null
+  filePath: string
+  title: string | null
+  description: string | null
+  uploadedAt: Date
+  uploadedBy: string
+}
+
+interface AwardSimpleFileUploadProps {
+  biddingId: number
+  userId: string
+  readOnly?: boolean
+}
+
+export function AwardSimpleFileUpload({
+  biddingId,
+  userId,
+  readOnly = false
+}: AwardSimpleFileUploadProps) {
+  const { toast } = useToast()
+  const [isPending, startTransition] = useTransition()
+  const [documents, setDocuments] = React.useState<UploadedDocument[]>([])
+  const [isLoading, setIsLoading] = React.useState(true)
+
+  // 업로드된 문서 목록 로드
+  const loadDocuments = React.useCallback(async () => {
+    try {
+      setIsLoading(true)
+      const docs = await getAwardDocuments(biddingId)
+      setDocuments(docs as UploadedDocument[])
+    } catch (error) {
+      console.error('Failed to load documents:', error)
+      toast({
+        title: '오류',
+        description: '업로드된 문서 목록을 불러오는데 실패했습니다.',
+        variant: 'destructive',
+      })
+    } finally {
+      setIsLoading(false)
+    }
+  }, [biddingId, toast])
+
+  React.useEffect(() => {
+    loadDocuments()
+  }, [loadDocuments])
+
+  // 파일 업로드 처리
+  const handleFileUpload = (event: React.ChangeEvent<HTMLInputElement>) => {
+    const files = event.target.files
+    if (!files || files.length === 0) return
+
+    const file = files[0]
+    
+    // 파일 크기 체크 (50MB 제한)
+    if (file.size > 50 * 1024 * 1024) {
+      toast({
+        title: '파일 크기 초과',
+        description: '파일 크기가 50MB를 초과합니다.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    // 파일 타입 체크
+    const allowedTypes = [
+      'application/pdf',
+      'application/msword',
+      'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+      'application/vnd.ms-excel',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      'image/jpeg',
+      'image/png',
+      'application/zip'
+    ]
+    
+    if (!allowedTypes.includes(file.type)) {
+      toast({
+        title: '지원하지 않는 파일 형식',
+        description: 'PDF, Word, Excel, 이미지, ZIP 파일만 업로드 가능합니다.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    startTransition(async () => {
+      const result = await uploadAwardDocument(biddingId, file, userId)
+      
+      if (result.success) {
+        toast({
+          title: '업로드 완료',
+          description: result.message,
+        })
+        await loadDocuments() // 문서 목록 새로고침
+      } else {
+        toast({
+          title: '업로드 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+
+    // input 초기화
+    event.target.value = ''
+  }
+
+  // 파일 다운로드
+  const handleDownload = (document: UploadedDocument) => {
+    startTransition(async () => {
+      const result = await getAwardDocumentForDownload(document.id, biddingId)
+      
+      if (result.success) {
+        try {
+          await downloadFile(result.document?.filePath, result.document?.originalFileName, {
+            showToast: true
+          })
+        } catch (error) {
+          toast({
+            title: '다운로드 실패',
+            description: '파일 다운로드에 실패했습니다.',
+            variant: 'destructive',
+          })
+        }
+      } else {
+        toast({
+          title: '다운로드 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  // 파일 삭제
+  const handleDelete = (document: UploadedDocument) => {
+    if (!confirm(`"${document.originalFileName}" 파일을 삭제하시겠습니까?`)) {
+      return
+    }
+
+    startTransition(async () => {
+      const result = await deleteAwardDocument(document.id, biddingId, userId)
+      
+      if (result.success) {
+        toast({
+          title: '삭제 완료',
+          description: result.message,
+        })
+        await loadDocuments() // 문서 목록 새로고침
+      } else {
+        toast({
+          title: '삭제 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  // 파일 크기 포맷팅
+  const formatFileSize = (bytes: number | null) => {
+    if (!bytes) return '-'
+    if (bytes === 0) return '0 Bytes'
+    const k = 1024
+    const sizes = ['Bytes', 'KB', 'MB', 'GB']
+    const i = Math.floor(Math.log(bytes) / Math.log(k))
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
+  }
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle className="flex items-center gap-2">
+          <FileText className="w-5 h-5" />
+          낙찰 관련 문서 업로드
+        </CardTitle>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {!readOnly && (
+          <div className="space-y-2">
+            <Label htmlFor="award-file-upload">낙찰 관련 파일</Label>
+            <Input
+              id="award-file-upload"
+              type="file"
+              accept=".pdf,.doc,.docx,.xls,.xlsx,.jpg,.jpeg,.png,.zip"
+              onChange={handleFileUpload}
+              disabled={isPending}
+            />
+            <p className="text-xs text-muted-foreground">
+              지원 형식: PDF, Word, Excel, 이미지, ZIP (최대 50MB)
+            </p>
+          </div>
+        )}
+
+        {/* 업로드된 문서 목록 */}
+        {isLoading ? (
+          <div className="text-center py-4">
+            <p className="text-muted-foreground">문서 목록을 불러오는 중...</p>
+          </div>
+        ) : documents.length > 0 ? (
+          <div className="space-y-2">
+            <Label className="text-sm font-medium">업로드된 문서</Label>
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>파일명</TableHead>
+                  <TableHead>크기</TableHead>
+                  <TableHead>업로드일</TableHead>
+                  <TableHead>작성자</TableHead>
+                  <TableHead className="w-24">작업</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {documents.map((doc) => (
+                  <TableRow key={doc.id}>
+                    <TableCell>
+                      <div className="flex items-center gap-2">
+                        <FileText className="w-4 h-4 text-gray-500" />
+                        <span className="truncate max-w-48" title={doc.originalFileName}>
+                          {doc.originalFileName}
+                        </span>
+                      </div>
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {formatFileSize(doc.fileSize)}
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {new Date(doc.uploadedAt).toLocaleDateString('ko-KR')}
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {doc.uploadedBy}
+                    </TableCell>
+                    <TableCell>
+                      <div className="flex items-center gap-1">
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          onClick={() => handleDownload(doc)}
+                          disabled={isPending}
+                          title="다운로드"
+                        >
+                          <Download className="w-3 h-3" />
+                        </Button>
+                        {!readOnly && doc.uploadedBy === userId && (
+                          <Button
+                            variant="outline"
+                            size="sm"
+                            onClick={() => handleDelete(doc)}
+                            disabled={isPending}
+                            title="삭제"
+                            className="text-red-600 hover:text-red-700"
+                          >
+                            <Trash2 className="w-3 h-3" />
+                          </Button>
+                        )}
+                      </div>
+                    </TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          </div>
+        ) : (
+          <div className="text-center py-4 text-gray-500">
+            <FileText className="w-8 h-8 mx-auto mb-2 opacity-50" />
+            <p className="text-sm">업로드된 문서가 없습니다</p>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  )
+}
diff --git a/lib/bidding/list/biddings-table-columns.tsx b/lib/bidding/list/biddings-table-columns.tsx
index 48a77954..ed9d20e3 100644
--- a/lib/bidding/list/biddings-table-columns.tsx
+++ b/lib/bidding/list/biddings-table-columns.tsx
@@ -540,7 +540,7 @@ export function getBiddingsColumns({ setRowAction }: GetColumnsProps): ColumnDef
     // ═══════════════════════════════════════════════════════════════
     {
       id: "actions",
-      header: "작업",
+      header: "액션",
       cell: ({ row }) => (
         <DropdownMenu>
           <DropdownMenuTrigger asChild>
diff --git a/lib/bidding/list/create-bidding-dialog.tsx b/lib/bidding/list/create-bidding-dialog.tsx
index e5bfcae4..88697903 100644
--- a/lib/bidding/list/create-bidding-dialog.tsx
+++ b/lib/bidding/list/create-bidding-dialog.tsx
@@ -114,6 +114,8 @@ interface PRItemInfo {
     itemInfo: string
     quantity: string
     quantityUnit: string
+    totalWeight: string
+    weightUnit: string
     requestedDeliveryDate: string
     specFiles: File[]
     isRepresentative: boolean // 대표 아이템 여부
@@ -341,6 +343,8 @@ export function CreateBiddingDialog() {
             itemInfo: "",
             quantity: "",
             quantityUnit: "EA",
+            totalWeight: "",
+            weightUnit: "KG",
             requestedDeliveryDate: "",
             specFiles: [],
             isRepresentative: prItems.length === 0, // 첫 번째 아이템은 자동으로 대표 아이템
@@ -1438,6 +1442,8 @@ export function CreateBiddingDialog() {
                                                                             <TableHead>품목정보</TableHead>
                                                                             <TableHead className="w-[80px]">수량</TableHead>
                                                                             <TableHead className="w-[80px]">단위</TableHead>
+                                                                            <TableHead className="w-[80px]">중량</TableHead>
+                                                                            <TableHead className="w-[80px]">중량단위</TableHead>
                                                                             <TableHead className="w-[140px]">납품요청일</TableHead>
                                                                             <TableHead className="w-[80px]">스펙파일</TableHead>
                                                                             <TableHead className="w-[80px]">액션</TableHead>
@@ -1507,6 +1513,31 @@ export function CreateBiddingDialog() {
                                                                                 </TableCell>
                                                                                 <TableCell>
                                                                                     <Input
+                                                                                        type="number"
+                                                                                        placeholder="중량"
+                                                                                        value={item.totalWeight}
+                                                                                        onChange={(e) => updatePRItem(item.id, { totalWeight: e.target.value })}
+                                                                                        className="h-8"
+                                                                                    />
+                                                                                </TableCell>
+                                                                                <TableCell>
+                                                                                    <Select
+                                                                                        value={item.weightUnit}
+                                                                                        onValueChange={(value) => updatePRItem(item.id, { weightUnit: value })}
+                                                                                    >
+                                                                                        <SelectTrigger className="h-8">
+                                                                                            <SelectValue />
+                                                                                        </SelectTrigger>
+                                                                                        <SelectContent>
+                                                                                            <SelectItem value="KG">KG</SelectItem>
+                                                                                            <SelectItem value="TON">TON</SelectItem>
+                                                                                            <SelectItem value="G">G</SelectItem>
+                                                                                            <SelectItem value="LB">LB</SelectItem>
+                                                                                        </SelectContent>
+                                                                                    </Select>
+                                                                                </TableCell>
+                                                                                <TableCell>
+                                                                                    <Input
                                                                                         type="date"
                                                                                         value={item.requestedDeliveryDate}
                                                                                         onChange={(e) => updatePRItem(item.id, { requestedDeliveryDate: e.target.value })}
diff --git a/lib/bidding/pre-quote/service.ts b/lib/bidding/pre-quote/service.ts
index 7f0a9083..b5b06769 100644
--- a/lib/bidding/pre-quote/service.ts
+++ b/lib/bidding/pre-quote/service.ts
@@ -127,6 +127,33 @@ export async function updateBiddingCompany(id: number, input: UpdateBiddingCompa
   }
 }
 
+// 본입찰 등록 상태 업데이트 (복수 업체 선택 가능)
+export async function updatePreQuoteSelection(companyIds: number[], isSelected: boolean, userId: string) {
+  try {
+    await db.update(biddingCompanies)
+      .set({
+        isPreQuoteSelected: isSelected,
+        updatedAt: new Date()
+      })
+      .where(inArray(biddingCompanies.id, companyIds))
+
+    const message = isSelected 
+      ? `${companyIds.length}개 업체가 본입찰 대상으로 선정되었습니다.`
+      : `${companyIds.length}개 업체의 본입찰 선정이 취소되었습니다.`
+
+    return {
+      success: true,
+      message
+    }
+  } catch (error) {
+    console.error('Failed to update pre-quote selection:', error)
+    return { 
+      success: false, 
+      error: error instanceof Error ? error.message : '본입찰 선정 상태 업데이트에 실패했습니다.' 
+    }
+  }
+}
+
 // 사전견적용 업체 삭제
 export async function deleteBiddingCompany(id: number) {
   try {
@@ -302,6 +329,17 @@ export async function sendPreQuoteInvitations(companyIds: number[]) {
         }
       }
     }
+          // 3. 입찰 상태를 사전견적 요청으로 변경 (bidding_generated 상태에서만)
+      await tx
+        .update(biddings)
+        .set({
+          status: 'request_for_quotation',
+          updatedAt: new Date()
+        })
+        .where(and(
+          eq(biddings.id, biddingId),
+          eq(biddings.status, 'bidding_generated')
+        ))
 
     return {
       success: true,
@@ -556,6 +594,28 @@ export async function submitPreQuoteResponse(
           await tx.insert(priceAdjustmentForms).values(priceAdjustmentData)
         }
       }
+
+      // 5. 입찰 상태를 사전견적 접수로 변경 (request_for_quotation 상태에서만)
+      // 또한 사전견적 접수일 업데이트
+      const biddingCompany = await tx
+        .select({ biddingId: biddingCompanies.biddingId })
+        .from(biddingCompanies)
+        .where(eq(biddingCompanies.id, biddingCompanyId))
+        .limit(1)
+
+      if (biddingCompany.length > 0) {
+        await tx
+          .update(biddings)
+          .set({
+            status: 'received_quotation',
+            preQuoteReceivedAt: new Date(), // 사전견적 접수일 업데이트
+            updatedAt: new Date()
+          })
+          .where(and(
+            eq(biddings.id, biddingCompany[0].biddingId),
+            eq(biddings.status, 'request_for_quotation')
+          ))
+      }
     })
 
     return {
@@ -648,6 +708,8 @@ export async function getPrItemsForBidding(biddingId: number) {
         materialDescription: prItemsForBidding.materialDescription,
         quantity: prItemsForBidding.quantity,
         quantityUnit: prItemsForBidding.quantityUnit,
+        totalWeight: prItemsForBidding.totalWeight,
+        weightUnit: prItemsForBidding.weightUnit,
         currency: prItemsForBidding.currency,
         requestedDeliveryDate: prItemsForBidding.requestedDeliveryDate,
         hasSpecDocument: prItemsForBidding.hasSpecDocument
@@ -665,7 +727,6 @@ export async function getPrItemsForBidding(biddingId: number) {
 // SPEC 문서 조회 (PR 아이템에 연결된 문서들)
 export async function getSpecDocumentsForPrItem(prItemId: number) {
   try {
-    console.log('getSpecDocumentsForPrItem called with prItemId:', prItemId)
     
     const specDocs = await db
       .select({
@@ -686,7 +747,6 @@ export async function getSpecDocumentsForPrItem(prItemId: number) {
         )
       )
 
-    console.log('getSpecDocumentsForPrItem result:', specDocs)
     return specDocs
   } catch (error) {
     console.error('Failed to get spec documents for PR item:', error)
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-selection-dialog.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-selection-dialog.tsx
new file mode 100644
index 00000000..7de79771
--- /dev/null
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-selection-dialog.tsx
@@ -0,0 +1,158 @@
+'use client'
+
+import * as React from 'react'
+import { BiddingCompany } from './bidding-pre-quote-vendor-columns'
+import { updatePreQuoteSelection } from '../service'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { Badge } from '@/components/ui/badge'
+import { CheckCircle, XCircle, AlertCircle } from 'lucide-react'
+import { useToast } from '@/hooks/use-toast'
+import { useTransition } from 'react'
+
+interface BiddingPreQuoteSelectionDialogProps {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  selectedCompanies: BiddingCompany[]
+  onSuccess: () => void
+}
+
+export function BiddingPreQuoteSelectionDialog({
+  open,
+  onOpenChange,
+  selectedCompanies,
+  onSuccess
+}: BiddingPreQuoteSelectionDialogProps) {
+  const { toast } = useToast()
+  const [isPending, startTransition] = useTransition()
+  // 선택된 업체들의 현재 상태 분석 (선정만 가능)
+  const unselectedCompanies = selectedCompanies.filter(c => !c.isPreQuoteSelected)
+  const hasQuotationCompanies = selectedCompanies.filter(c => c.preQuoteAmount && Number(c.preQuoteAmount) > 0)
+
+  const handleConfirm = () => {
+    const companyIds = selectedCompanies.map(c => c.id)
+    const isSelected = true // 항상 선정으로 고정
+
+    startTransition(async () => {
+      const result = await updatePreQuoteSelection(
+        companyIds,
+        isSelected,
+        'current-user' // TODO: 실제 사용자 ID
+      )
+
+      if (result.success) {
+        toast({
+          title: '성공',
+          description: result.message,
+        })
+        onSuccess()
+        onOpenChange(false)
+      } else {
+        toast({
+          title: '오류',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  const getActionIcon = (isSelected: boolean) => {
+    return isSelected ? 
+      <CheckCircle className="h-4 w-4 text-muted-foreground" /> : 
+      <CheckCircle className="h-4 w-4 text-green-600" />
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-[600px]">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <AlertCircle className="h-5 w-5 text-amber-500" />
+            본입찰 선정 상태 변경
+          </DialogTitle>
+          <DialogDescription>
+            선택된 {selectedCompanies.length}개 업체의 본입찰 선정 상태를 변경합니다.
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="space-y-4">
+          {/* 견적 제출 여부 안내 */}
+          {hasQuotationCompanies.length !== selectedCompanies.length && (
+            <div className="bg-amber-50 border border-amber-200 rounded-lg p-3">
+              <div className="flex items-center gap-2 text-amber-800">
+                <AlertCircle className="h-4 w-4" />
+                <span className="text-sm font-medium">알림</span>
+              </div>
+              <p className="text-sm text-amber-700 mt-1">
+                사전견적을 제출하지 않은 업체도 포함되어 있습니다. 
+                견적 미제출 업체도 본입찰에 참여시키시겠습니까?
+              </p>
+            </div>
+          )}
+
+          {/* 업체 목록 */}
+          <div className="border rounded-lg">
+            <div className="p-3 bg-muted/50 border-b">
+              <h4 className="font-medium">대상 업체 목록</h4>
+            </div>
+            <div className="max-h-64 overflow-y-auto">
+              {selectedCompanies.map((company) => (
+                <div key={company.id} className="flex items-center justify-between p-3 border-b last:border-b-0">
+                  <div className="flex items-center gap-3">
+                    {getActionIcon(company.isPreQuoteSelected)}
+                    <div>
+                      <div className="font-medium">{company.companyName}</div>
+                      <div className="text-sm text-muted-foreground">{company.companyCode}</div>
+                    </div>
+                  </div>
+                  <div className="flex items-center gap-2">
+                    <Badge variant={company.isPreQuoteSelected ? 'default' : 'secondary'}>
+                      {company.isPreQuoteSelected ? '현재 선정' : '현재 미선정'}
+                    </Badge>
+                    {company.preQuoteAmount && Number(company.preQuoteAmount) > 0 ? (
+                      <Badge variant="outline" className="text-green-600">
+                        견적 제출
+                      </Badge>
+                    ) : (
+                      <Badge variant="outline" className="text-muted-foreground">
+                        견적 미제출
+                      </Badge>
+                    )}
+                  </div>
+                </div>
+              ))}
+            </div>
+          </div>
+
+          {/* 결과 요약 */}
+          <div className="bg-blue-50 border border-blue-200 rounded-lg p-3">
+            <h5 className="font-medium text-blue-900 mb-2">변경 결과</h5>
+            <div className="text-sm text-blue-800">
+              <p>• {unselectedCompanies.length}개 업체가 본입찰 대상으로 <span className="font-medium text-green-600">선정</span>됩니다.</p>
+              {selectedCompanies.length > unselectedCompanies.length && (
+                <p>• {selectedCompanies.length - unselectedCompanies.length}개 업체는 이미 선정 상태이므로 변경되지 않습니다.</p>
+              )}
+            </div>
+          </div>
+        </div>
+
+        <DialogFooter>
+          <Button variant="outline" onClick={() => onOpenChange(false)}>
+            취소
+          </Button>
+          <Button onClick={handleConfirm} disabled={isPending}>
+            {isPending ? '처리 중...' : '확인'}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
index f28f9e1f..7e84f178 100644
--- a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
@@ -317,7 +317,7 @@ export function getBiddingPreQuoteVendorColumns({
     },
     {
       id: 'actions',
-      header: '작업',
+      header: '액션',
       cell: ({ row }) => {
         const company = row.original
 
@@ -330,7 +330,6 @@ export function getBiddingPreQuoteVendorColumns({
               </Button>
             </DropdownMenuTrigger>
             <DropdownMenuContent align="end">
-              <DropdownMenuLabel>작업</DropdownMenuLabel>
               {/* <DropdownMenuItem onClick={() => onEdit(company)}>
                 <Edit className="mr-2 h-4 w-4" />
                 수정
@@ -341,7 +340,6 @@ export function getBiddingPreQuoteVendorColumns({
                   초대 발송
                 </DropdownMenuItem>
               )}
-              <DropdownMenuSeparator />
               <DropdownMenuItem
                 onClick={() => onDelete(company)}
                 className="text-destructive"
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-toolbar-actions.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-toolbar-actions.tsx
index c1b1baa5..6c209e2d 100644
--- a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-toolbar-actions.tsx
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-toolbar-actions.tsx
@@ -4,10 +4,11 @@ import * as React from "react"
 import { type Table } from "@tanstack/react-table"
 import { useTransition } from "react"
 import { Button } from "@/components/ui/button"
-import { Plus, Send, Mail } from "lucide-react"
+import { Plus, Send, Mail, CheckSquare } from "lucide-react"
 import { BiddingCompany } from "./bidding-pre-quote-vendor-columns"
 import { BiddingPreQuoteVendorCreateDialog } from "./bidding-pre-quote-vendor-create-dialog"
 import { BiddingPreQuoteInvitationDialog } from "./bidding-pre-quote-invitation-dialog"
+import { BiddingPreQuoteSelectionDialog } from "./bidding-pre-quote-selection-dialog"
 import { Bidding } from "@/db/schema" 
 import { useToast } from "@/hooks/use-toast"
 
@@ -36,6 +37,7 @@ export function BiddingPreQuoteVendorToolbarActions({
   const [isPending, startTransition] = useTransition()
   const [isCreateDialogOpen, setIsCreateDialogOpen] = React.useState(false)
   const [isInvitationDialogOpen, setIsInvitationDialogOpen] = React.useState(false)
+  const [isSelectionDialogOpen, setIsSelectionDialogOpen] = React.useState(false)
 
   const handleCreateCompany = () => {
     setIsCreateDialogOpen(true)
@@ -45,6 +47,19 @@ export function BiddingPreQuoteVendorToolbarActions({
     setIsInvitationDialogOpen(true)
   }
 
+  const handleManageSelection = () => {
+    const selectedRows = table.getFilteredSelectedRowModel().rows
+    if (selectedRows.length === 0) {
+      toast({
+        title: '선택 필요',
+        description: '본입찰 선정 상태를 변경할 업체를 선택해주세요.',
+        variant: 'destructive',
+      })
+      return
+    }
+    setIsSelectionDialogOpen(true)
+  }
+
 
 
   return (
@@ -69,6 +84,16 @@ export function BiddingPreQuoteVendorToolbarActions({
           <Mail className="mr-2 h-4 w-4" />
           초대 발송
         </Button>
+        
+        <Button
+          variant="secondary"
+          size="sm"
+          onClick={handleManageSelection}
+          disabled={isPending}
+        >
+          <CheckSquare className="mr-2 h-4 w-4" />
+          본입찰 선정
+        </Button>
       </div>
 
       <BiddingPreQuoteVendorCreateDialog
@@ -87,6 +112,16 @@ export function BiddingPreQuoteVendorToolbarActions({
         companies={biddingCompanies}
         onSuccess={onSuccess}
       />
+
+      <BiddingPreQuoteSelectionDialog
+        open={isSelectionDialogOpen}
+        onOpenChange={setIsSelectionDialogOpen}
+        selectedCompanies={table.getFilteredSelectedRowModel().rows.map(row => row.original)}
+        onSuccess={() => {
+          onSuccess()
+          table.resetRowSelection()
+        }}
+      />
     </>
   )
 }
diff --git a/lib/bidding/service.ts b/lib/bidding/service.ts
index ef404561..8c99bfed 100644
--- a/lib/bidding/service.ts
+++ b/lib/bidding/service.ts
@@ -639,8 +639,8 @@ export async function createBidding(input: CreateBiddingInput, userId: string) {
               currency: 'KRW', // 기본값 또는 입력받은 값
               quantity: prItem.quantity ? parseFloat(prItem.quantity) : null,
               quantityUnit: prItem.quantityUnit as any, // enum 타입에 맞게
-              totalWeight: null, // 필요시 추가
-              weightUnit: null, // 필요시 추가
+              totalWeight: prItem.totalWeight ? parseFloat(prItem.totalWeight) : null,
+              weightUnit: prItem.weightUnit as any, // enum 타입에 맞게
               materialDescription: '', // 필요시 추가
               prNumber: prItem.prNumber,
               hasSpecDocument: prItem.specFiles.length > 0,
diff --git a/lib/bidding/vendor/components/pr-items-pricing-table.tsx b/lib/bidding/vendor/components/pr-items-pricing-table.tsx
index 01885f7a..1dee7adb 100644
--- a/lib/bidding/vendor/components/pr-items-pricing-table.tsx
+++ b/lib/bidding/vendor/components/pr-items-pricing-table.tsx
@@ -39,6 +39,8 @@ interface PrItem {
   materialDescription: string | null
   quantity: string | null
   quantityUnit: string | null
+  totalWeight: string | null
+  weightUnit: string | null
   currency: string | null
   requestedDeliveryDate: string | null
   hasSpecDocument: boolean | null
@@ -221,11 +223,20 @@ export function PrItemsPricingTable({
       if (q.prItemId === prItemId) {
         const updated = { ...q, [field]: value }
         
-        // 단가나 수량이 변경되면 금액 자동 계산
+        // 단가가 변경되면 금액 자동 계산 (수량 우선, 없으면 중량 사용)
         if (field === 'bidUnitPrice') {
           const prItem = prItems.find(item => item.id === prItemId)
-          const quantity = parseFloat(prItem?.quantity || '1')
-          updated.bidAmount = updated.bidUnitPrice * quantity
+          let multiplier = 1
+          
+          if (prItem?.quantity && parseFloat(prItem.quantity) > 0) {
+            // 수량이 있으면 수량 기준
+            multiplier = parseFloat(prItem.quantity)
+          } else if (prItem?.totalWeight && parseFloat(prItem.totalWeight) > 0) {
+            // 수량이 없으면 중량 기준
+            multiplier = parseFloat(prItem.totalWeight)
+          }
+          
+          updated.bidAmount = updated.bidUnitPrice * multiplier
         }
         
         return updated
@@ -273,6 +284,8 @@ export function PrItemsPricingTable({
                   <TableHead>자재내역</TableHead>
                   <TableHead>수량</TableHead>
                   <TableHead>단위</TableHead>
+                  <TableHead>중량</TableHead>
+                  <TableHead>중량단위</TableHead>
                   <TableHead>견적단가</TableHead>
                   <TableHead>견적금액</TableHead>
                   <TableHead>납품예정일</TableHead>
@@ -310,6 +323,10 @@ export function PrItemsPricingTable({
                         {item.quantity ? parseFloat(item.quantity).toLocaleString() : '-'}
                       </TableCell>
                       <TableCell>{item.quantityUnit || '-'}</TableCell>
+                      <TableCell className="text-right">
+                        {item.totalWeight ? parseFloat(item.totalWeight).toLocaleString() : '-'}
+                      </TableCell>
+                      <TableCell>{item.weightUnit || '-'}</TableCell>
                       <TableCell>
                         {readOnly ? (
                           <span className="font-medium">
diff --git a/lib/bidding/vendor/partners-bidding-detail.tsx b/lib/bidding/vendor/partners-bidding-detail.tsx
index 1e6ae479..8d24ca66 100644
--- a/lib/bidding/vendor/partners-bidding-detail.tsx
+++ b/lib/bidding/vendor/partners-bidding-detail.tsx
@@ -20,15 +20,21 @@ import {
   Users,
   Send,
   CheckCircle,
-  XCircle
+  XCircle,
+  Save
 } from 'lucide-react'
 
 import { formatDate } from '@/lib/utils'
 import {
   getBiddingDetailsForPartners,
   submitPartnerResponse,
-  updatePartnerAttendance
+  updatePartnerAttendance,
+  updatePartnerBiddingParticipation,
+  saveBiddingDraft
 } from '../detail/service'
+import { getPrItemsForBidding, getSavedPrItemQuotations } from '@/lib/bidding/pre-quote/service'
+import { PrItemsPricingTable } from './components/pr-items-pricing-table'
+import { SimpleFileUpload } from './components/simple-file-upload'
 import {
   biddingStatusLabels,
   contractTypeLabels,
@@ -36,6 +42,7 @@ import {
 } from '@/db/schema'
 import { useToast } from '@/hooks/use-toast'
 import { useTransition } from 'react'
+import { useSession } from 'next-auth/react'
 
 interface PartnersBiddingDetailProps {
   biddingId: number
@@ -45,115 +52,144 @@ interface PartnersBiddingDetailProps {
 interface BiddingDetail {
   id: number
   biddingNumber: string
-  revision: number
-  projectName: string
-  itemName: string
+  revision: number | null
+  projectName: string | null
+  itemName: string | null
   title: string
-  description: string
-  content: string
+  description: string | null
+  content: string | null
   contractType: string
   biddingType: string
   awardCount: string
-  contractPeriod: string
-  preQuoteDate: string
-  biddingRegistrationDate: string
-  submissionStartDate: string
-  submissionEndDate: string
-  evaluationDate: string
+  contractPeriod: string | null
+  preQuoteDate: string | null
+  biddingRegistrationDate: string | null
+  submissionStartDate: string | null
+  submissionEndDate: string | null
+  evaluationDate: string | null
   currency: string
-  budget: number
-  targetPrice: number
+  budget: number | null
+  targetPrice: number | null
   status: string
-  managerName: string
-  managerEmail: string
-  managerPhone: string
+  managerName: string | null
+  managerEmail: string | null
+  managerPhone: string | null
   biddingCompanyId: number
-  biddingId: number // bidding의 ID 추가
+  biddingId: number
   invitationStatus: string
-  finalQuoteAmount: number
-  finalQuoteSubmittedAt: string
+  finalQuoteAmount: number | null
+  finalQuoteSubmittedAt: string | null
   isWinner: boolean
   isAttendingMeeting: boolean | null
-  // companyConditionResponses에서 가져온 조건들 (제시된 조건과 응답 모두)
-  paymentTermsResponse: string
-  taxConditionsResponse: string
-  incotermsResponse: string
-  proposedContractDeliveryDate: string
-  proposedShippingPort: string
-  proposedDestinationPort: string
-  priceAdjustmentResponse: boolean
-  sparePartResponse: string
-  additionalProposals: string
-  responseSubmittedAt: string
+  isBiddingParticipated: boolean | null
+  additionalProposals: string | null
+  responseSubmittedAt: string | null
+}
+
+interface PrItem {
+  id: number
+  itemNumber: string | null
+  prNumber: string | null
+  itemInfo: string | null
+  materialDescription: string | null
+  quantity: string | null
+  quantityUnit: string | null
+  totalWeight: string | null
+  weightUnit: string | null
+  currency: string | null
+  requestedDeliveryDate: string | null
+  hasSpecDocument: boolean | null
+}
+
+interface PrItemQuotation {
+  prItemId: number
+  bidUnitPrice: number
+  bidAmount: number
+  proposedDeliveryDate?: string | null
+  technicalSpecification?: string
 }
 
 export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingDetailProps) {
   const router = useRouter()
   const { toast } = useToast()
+  const session = useSession()
   const [isPending, startTransition] = useTransition()
   const [biddingDetail, setBiddingDetail] = React.useState<BiddingDetail | null>(null)
   const [isLoading, setIsLoading] = React.useState(true)
+  const [isUpdatingParticipation, setIsUpdatingParticipation] = React.useState(false)
+  const [isSavingDraft, setIsSavingDraft] = React.useState(false)
+  const [isSubmitting, setIsSubmitting] = React.useState(false)
+  
+  // 품목별 견적 관련 상태
+  const [prItems, setPrItems] = React.useState<PrItem[]>([])
+  const [prItemQuotations, setPrItemQuotations] = React.useState<PrItemQuotation[]>([])
+  const [totalQuotationAmount, setTotalQuotationAmount] = React.useState(0)
 
   // 응찰 폼 상태
   const [responseData, setResponseData] = React.useState({
     finalQuoteAmount: '',
-    paymentTermsResponse: '',
-    taxConditionsResponse: '',
-    incotermsResponse: '',
     proposedContractDeliveryDate: '',
-    proposedShippingPort: '',
-    proposedDestinationPort: '',
-    priceAdjustmentResponse: false,
-    isInitialResponse: false,
-    sparePartResponse: '',
     additionalProposals: '',
-    isAttendingMeeting: false,
   })
+  const userId = session.data?.user?.id || ''
 
-  // 연동제 폼 상태
-  const [priceAdjustmentForm, setPriceAdjustmentForm] = React.useState({
-    itemName: '',
-    adjustmentReflectionPoint: '',
-    majorApplicableRawMaterial: '',
-    adjustmentFormula: '',
-    rawMaterialPriceIndex: '',
-    referenceDate: '',
-    comparisonDate: '',
-    adjustmentRatio: '',
-    notes: '',
-    adjustmentConditions: '',
-    majorNonApplicableRawMaterial: '',
-    adjustmentPeriod: '',
-    contractorWriter: '',
-    adjustmentDate: '',
-    nonApplicableReason: '',
-  })
 
   // 데이터 로드
   React.useEffect(() => {
     const loadData = async () => {
       try {
         setIsLoading(true)
-        const result = await getBiddingDetailsForPartners(biddingId, companyId)
+        const [result, prItemsResult] = await Promise.all([
+          getBiddingDetailsForPartners(biddingId, companyId),
+          getPrItemsForBidding(biddingId)
+        ])
+        
         if (result) {
           setBiddingDetail(result)
 
           // 기존 응답 데이터로 폼 초기화
           setResponseData({
             finalQuoteAmount: result.finalQuoteAmount?.toString() || '',
-            paymentTermsResponse: result.paymentTermsResponse || '',
-            taxConditionsResponse: result.taxConditionsResponse || '',
-            incotermsResponse: result.incotermsResponse || '',
             proposedContractDeliveryDate: result.proposedContractDeliveryDate || '',
-            proposedShippingPort: result.proposedShippingPort || '',
-            proposedDestinationPort: result.proposedDestinationPort || '',
-            priceAdjustmentResponse: result.priceAdjustmentResponse || false,
-            isInitialResponse: result.isInitialResponse || false,
-            sparePartResponse: result.sparePartResponse || '',
             additionalProposals: result.additionalProposals || '',
-            isAttendingMeeting: result.isAttendingMeeting || false,
           })
         }
+
+        // PR 아이템 설정
+        setPrItems(prItemsResult)
+
+        // 사전견적 데이터를 본입찰용으로 로드 (응찰 확정 시 또는 사전견적이 있는 경우)
+        if (result?.biddingCompanyId) {
+          try {
+            // 사전견적 데이터를 가져와서 본입찰용으로 변환
+            const preQuoteData = await getSavedPrItemQuotations(result.biddingCompanyId)
+            
+            // 사전견적 데이터를 본입찰 포맷으로 변환
+            const convertedQuotations = preQuoteData.map(item => ({
+              prItemId: item.prItemId,
+              bidUnitPrice: item.bidUnitPrice,
+              bidAmount: item.bidAmount,
+              proposedDeliveryDate: item.proposedDeliveryDate || '',
+              technicalSpecification: item.technicalSpecification || undefined
+            }))
+            
+            setPrItemQuotations(convertedQuotations)
+            
+            // 총 금액 계산
+            const total = convertedQuotations.reduce((sum, q) => sum + q.bidAmount, 0)
+            setTotalQuotationAmount(total)
+            
+            // 응찰 확정 시에만 사전견적 금액을 finalQuoteAmount로 설정
+            if (total > 0 && result.isBiddingParticipated === true) {
+              setResponseData(prev => ({
+                ...prev,
+                finalQuoteAmount: total.toString()
+              }))
+            }
+          } catch (error) {
+            console.error('Failed to load pre-quote data:', error)
+          }
+        }
       } catch (error) {
         console.error('Failed to load bidding detail:', error)
         toast({
@@ -169,53 +205,16 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
     loadData()
   }, [biddingId, companyId, toast])
 
-  const handleSubmitResponse = () => {
+  // 입찰 참여여부 결정 핸들러
+  const handleParticipationDecision = async (participated: boolean) => {
     if (!biddingDetail) return
 
-    // 필수값 검증
-    if (!responseData.finalQuoteAmount.trim()) {
-      toast({
-        title: '유효성 오류',
-        description: '견적 금액을 입력해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    startTransition(async () => {
-      const result = await submitPartnerResponse(
+    setIsUpdatingParticipation(true)
+    try {
+      const result = await updatePartnerBiddingParticipation(
         biddingDetail.biddingCompanyId,
-        {
-          finalQuoteAmount: parseFloat(responseData.finalQuoteAmount),
-          paymentTermsResponse: responseData.paymentTermsResponse,
-          taxConditionsResponse: responseData.taxConditionsResponse,
-          incotermsResponse: responseData.incotermsResponse,
-          proposedContractDeliveryDate: responseData.proposedContractDeliveryDate,
-          proposedShippingPort: responseData.proposedShippingPort,
-          proposedDestinationPort: responseData.proposedDestinationPort,
-          priceAdjustmentResponse: responseData.priceAdjustmentResponse,
-          isInitialResponse: responseData.isInitialResponse,
-          sparePartResponse: responseData.sparePartResponse,
-          additionalProposals: responseData.additionalProposals,
-          priceAdjustmentForm: responseData.priceAdjustmentResponse ? {
-            itemName: priceAdjustmentForm.itemName,
-            adjustmentReflectionPoint: priceAdjustmentForm.adjustmentReflectionPoint,
-            majorApplicableRawMaterial: priceAdjustmentForm.majorApplicableRawMaterial,
-            adjustmentFormula: priceAdjustmentForm.adjustmentFormula,
-            rawMaterialPriceIndex: priceAdjustmentForm.rawMaterialPriceIndex,
-            referenceDate: priceAdjustmentForm.referenceDate,
-            comparisonDate: priceAdjustmentForm.comparisonDate,
-            adjustmentRatio: priceAdjustmentForm.adjustmentRatio ? parseFloat(priceAdjustmentForm.adjustmentRatio) : undefined,
-            notes: priceAdjustmentForm.notes,
-            adjustmentConditions: priceAdjustmentForm.adjustmentConditions,
-            majorNonApplicableRawMaterial: priceAdjustmentForm.majorNonApplicableRawMaterial,
-            adjustmentPeriod: priceAdjustmentForm.adjustmentPeriod,
-            contractorWriter: priceAdjustmentForm.contractorWriter,
-            adjustmentDate: priceAdjustmentForm.adjustmentDate,
-            nonApplicableReason: priceAdjustmentForm.nonApplicableReason,
-          } : undefined
-        },
-        'current-user' // TODO: 실제 사용자 ID
+        participated,
+        userId
       )
 
       if (result.success) {
@@ -236,6 +235,169 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
           variant: 'destructive',
         })
       }
+    } catch (error) {
+      console.error('Failed to update participation:', error)
+      toast({
+        title: '오류',
+        description: '참여여부 업데이트에 실패했습니다.',
+        variant: 'destructive',
+      })
+    } finally {
+      setIsUpdatingParticipation(false)
+    }
+  }
+
+  // 품목별 견적 변경 핸들러
+  const handleQuotationsChange = (quotations: PrItemQuotation[]) => {
+    console.log('견적 변경:', quotations)
+    setPrItemQuotations(quotations)
+  }
+
+  // 총 금액 변경 핸들러
+  const handleTotalAmountChange = (total: number) => {
+    setTotalQuotationAmount(total)
+    // 자동으로 총 견적 금액도 업데이트
+    setResponseData(prev => ({
+      ...prev,
+      finalQuoteAmount: total.toString()
+    }))
+  }
+
+  // 임시 저장 핸들러
+  const handleSaveDraft = async () => {
+    if (!biddingDetail || !userId) return
+    
+    if (prItemQuotations.length === 0) {
+      toast({
+        title: '저장할 데이터 없음',
+        description: '저장할 품목별 견적이 없습니다.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    setIsSavingDraft(true)
+    try {
+      const quotationsForSave = prItemQuotations.map(q => ({
+        prItemId: q.prItemId,
+        bidUnitPrice: q.bidUnitPrice,
+        bidAmount: q.bidAmount,
+        proposedDeliveryDate: q.proposedDeliveryDate || undefined,
+        technicalSpecification: q.technicalSpecification
+      }))
+      
+      console.log('임시저장 - prItemQuotations:', prItemQuotations)
+      console.log('임시저장 - quotationsForSave:', quotationsForSave)
+      
+      const result = await saveBiddingDraft(
+        biddingDetail.biddingCompanyId,
+        quotationsForSave,
+        userId
+      )
+
+      if (result.success) {
+        toast({
+          title: '임시 저장 완료',
+          description: '품목별 견적이 임시 저장되었습니다.',
+        })
+      } else {
+        toast({
+          title: '임시 저장 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    } catch (error) {
+      console.error('Failed to save draft:', error)
+      toast({
+        title: '오류',
+        description: '임시 저장에 실패했습니다.',
+        variant: 'destructive',
+      })
+    } finally {
+      setIsSavingDraft(false)
+    }
+  }
+
+  const handleSubmitResponse = () => {
+    if (!biddingDetail) return
+
+    // 필수값 검증
+    if (!responseData.finalQuoteAmount.trim()) {
+      toast({
+        title: '유효성 오류',
+        description: '견적 금액을 입력해주세요.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    // 품목별 견적이 있는지 확인
+    if (prItems.length > 0 && prItemQuotations.length === 0) {
+      toast({
+        title: '유효성 오류',
+        description: '품목별 견적을 작성해주세요.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    setIsSubmitting(true)
+    startTransition(async () => {
+      try {
+        // 1. 입찰 참여 상태를 응찰로 변경
+        const participationResult = await updatePartnerBiddingParticipation(
+          biddingDetail.biddingCompanyId,
+          true, // 응찰
+          userId
+        )
+
+        if (!participationResult.success) {
+          throw new Error(participationResult.error)
+        }
+
+        // 2. 최종 견적 응답 제출 (PR 아이템별 견적 포함)
+        const result = await submitPartnerResponse(
+          biddingDetail.biddingCompanyId,
+          {
+            finalQuoteAmount: parseFloat(responseData.finalQuoteAmount),
+            proposedContractDeliveryDate: responseData.proposedContractDeliveryDate,
+            additionalProposals: responseData.additionalProposals,
+            prItemQuotations: prItemQuotations.length > 0 ? prItemQuotations.map(q => ({
+              prItemId: q.prItemId,
+              bidUnitPrice: q.bidUnitPrice,
+              bidAmount: q.bidAmount,
+              proposedDeliveryDate: q.proposedDeliveryDate || undefined,
+              technicalSpecification: q.technicalSpecification
+            })) : undefined,
+          },
+          userId
+        )
+
+        if (result.success) {
+          toast({
+            title: '응찰 완료',
+            description: '견적이 성공적으로 제출되었습니다.',
+          })
+
+          // 데이터 새로고침
+          const updatedDetail = await getBiddingDetailsForPartners(biddingId, companyId)
+          if (updatedDetail) {
+            setBiddingDetail(updatedDetail)
+          }
+        } else {
+          throw new Error(result.error)
+        }
+      } catch (error) {
+        console.error('Failed to submit response:', error)
+        toast({
+          title: '오류',
+          description: error instanceof Error ? error.message : '응찰 제출에 실패했습니다.',
+          variant: 'destructive',
+        })
+      } finally {
+        setIsSubmitting(false)
+      }
     })
   }
 
@@ -296,6 +458,28 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
           </div>
         </div>
 
+        {/* 입찰 참여여부 상태 표시 */}
+        <div className="flex items-center gap-2">
+          {biddingDetail.isBiddingParticipated === null ? (
+            <div className="flex items-center gap-2">
+              <Badge variant="outline">참여 결정 대기</Badge>
+              <Button 
+                onClick={() => handleParticipationDecision(false)}
+                disabled={isUpdatingParticipation}
+                variant="destructive"
+                size="sm"
+              >
+                <XCircle className="w-4 h-4 mr-1" />
+                미응찰
+              </Button>
+            </div>
+          ) : (
+            <Badge variant={biddingDetail.isBiddingParticipated ? 'default' : 'destructive'}>
+              {biddingDetail.isBiddingParticipated ? '응찰' : '미응찰'}
+            </Badge>
+          )}
+        </div>
+
       </div>
 
       {/* 입찰 공고 섹션 */}
@@ -312,14 +496,14 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
               <Label className="text-sm font-medium text-muted-foreground">프로젝트</Label>
               <div className="flex items-center gap-2 mt-1">
                 <Building2 className="w-4 h-4" />
-                <span>{biddingDetail.projectName}</span>
+                <span>{biddingDetail.projectName || '미설정'}</span>
               </div>
             </div>
             <div>
               <Label className="text-sm font-medium text-muted-foreground">품목</Label>
               <div className="flex items-center gap-2 mt-1">
                 <Package className="w-4 h-4" />
-                <span>{biddingDetail.itemName}</span>
+                <span>{biddingDetail.itemName || '미설정'}</span>
               </div>
             </div>
             <div>
@@ -338,7 +522,7 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
               <Label className="text-sm font-medium text-muted-foreground">담당자</Label>
               <div className="flex items-center gap-2 mt-1">
                 <User className="w-4 h-4" />
-                <span>{biddingDetail.managerName}</span>
+                <span>{biddingDetail.managerName || '미설정'}</span>
               </div>
             </div>
           </div>
@@ -372,73 +556,29 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
         </CardContent>
       </Card>
 
-      {/* 현재 설정된 조건 섹션 */}
+
+      {/* 참여 상태에 따른 섹션 표시 */}
+      {biddingDetail.isBiddingParticipated === false ? (
+        /* 미응찰 상태 표시 */
       <Card>
         <CardHeader>
-          <CardTitle>현재 설정된 입찰 조건</CardTitle>
+            <CardTitle className="flex items-center gap-2">
+              <XCircle className="w-5 h-5 text-destructive" />
+              입찰 참여 거절
+            </CardTitle>
         </CardHeader>
         <CardContent>
-          <div className="grid grid-cols-2 gap-4">
-            <div>
-              <Label className="text-sm font-medium">지급조건</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.paymentTermsResponse}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">세금조건</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.taxConditionsResponse}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">운송조건</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.incotermsResponse}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">제안 계약납기일</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.proposedContractDeliveryDate ? formatDate(biddingDetail.proposedContractDeliveryDate, 'KR') : '미설정'}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">제안 선적지</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.proposedShippingPort}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">제안 도착지</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.proposedDestinationPort}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">스페어파트 응답</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.sparePartResponse}
-              </div>
-            </div>
-
-            <div>
-              <Label className="text-sm font-medium">연동제 적용</Label>
-              <div className="mt-1 p-3 bg-muted rounded-md">
-                {biddingDetail.priceAdjustmentResponse ? '적용' : '미적용'}
-              </div>
-            </div>
+            <div className="text-center py-8">
+              <XCircle className="w-16 h-16 text-destructive mx-auto mb-4" />
+              <h3 className="text-lg font-semibold text-destructive mb-2">입찰에 참여하지 않기로 결정했습니다</h3>
+              <p className="text-muted-foreground">
+                해당 입찰에 대한 견적 제출 및 관련 기능은 이용할 수 없습니다.
+              </p>
           </div>
         </CardContent>
       </Card>
-
-      {/* 응찰 폼 섹션 */}
+      ) : biddingDetail.isBiddingParticipated === true || biddingDetail.isBiddingParticipated === null ? (
+        /* 응찰 폼 섹션 */
       <Card>
         <CardHeader>
           <CardTitle className="flex items-center gap-2">
@@ -447,19 +587,19 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
           </CardTitle>
         </CardHeader>
         <CardContent className="space-y-6">
-          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
-            <div className="space-y-2">
-              <Label htmlFor="finalQuoteAmount">견적금액 *</Label>
+          {/* 품목별 견적 섹션 */}
+            {/* <div className="space-y-2">
+                <Label htmlFor="finalQuoteAmount">총 견적금액 *</Label>
               <Input
                 id="finalQuoteAmount"
                 type="number"
                 value={responseData.finalQuoteAmount}
                 onChange={(e) => setResponseData({...responseData, finalQuoteAmount: e.target.value})}
-                placeholder="견적금액을 입력하세요"
+                  placeholder="총 견적금액을 입력하세요"
               />
-            </div>
+            </div> */}
 
-            <div className="space-y-2">
+            {/* <div className="space-y-2">
               <Label htmlFor="proposedContractDeliveryDate">제안 납품일</Label>
               <Input
                 id="proposedContractDeliveryDate"
@@ -467,289 +607,68 @@ export function PartnersBiddingDetail({ biddingId, companyId }: PartnersBiddingD
                 value={responseData.proposedContractDeliveryDate}
                 onChange={(e) => setResponseData({...responseData, proposedContractDeliveryDate: e.target.value})}
               />
+          </div> */}
+
+              {/* 품목별 상세 견적 테이블 */}
+              {prItems.length > 0 ? (
+                <PrItemsPricingTable
+                  prItems={prItems}
+                  initialQuotations={prItemQuotations}
+                  currency={biddingDetail?.currency || 'KRW'}
+                  onQuotationsChange={handleQuotationsChange}
+                  onTotalAmountChange={handleTotalAmountChange}
+                  readOnly={false}
+                />
+              ) : (
+                <div className="border rounded-lg p-4 bg-muted/20">
+                  <p className="text-sm text-muted-foreground text-center py-4">
+                    등록된 품목이 없습니다.
+                  </p>
             </div>
-          </div>
-
-          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
-            <div className="space-y-2">
-              <Label htmlFor="paymentTermsResponse">응답 지급조건</Label>
-              <Input
-                id="paymentTermsResponse"
-                value={responseData.paymentTermsResponse}
-                onChange={(e) => setResponseData({...responseData, paymentTermsResponse: e.target.value})}
-                placeholder="지급조건에 대한 의견을 입력하세요"
-              />
-            </div>
-
-            <div className="space-y-2">
-              <Label htmlFor="taxConditionsResponse">응답 세금조건</Label>
-              <Input
-                id="taxConditionsResponse"
-                value={responseData.taxConditionsResponse}
-                onChange={(e) => setResponseData({...responseData, taxConditionsResponse: e.target.value})}
-                placeholder="세금조건에 대한 의견을 입력하세요"
-              />
-            </div>
-          </div>
-
-          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
-            <div className="space-y-2">
-              <Label htmlFor="incotermsResponse">응답 운송조건</Label>
-              <Input
-                id="incotermsResponse"
-                value={responseData.incotermsResponse}
-                onChange={(e) => setResponseData({...responseData, incotermsResponse: e.target.value})}
-                placeholder="운송조건에 대한 의견을 입력하세요"
-              />
-            </div>
-
-            <div className="space-y-2">
-              <Label htmlFor="proposedShippingPort">제안 선적지</Label>
-              <Input
-                id="proposedShippingPort"
-                value={responseData.proposedShippingPort}
-                onChange={(e) => setResponseData({...responseData, proposedShippingPort: e.target.value})}
-                placeholder="선적지를 입력하세요"
-              />
-            </div>
-          </div>
-
-          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
-            <div className="space-y-2">
-              <Label htmlFor="proposedDestinationPort">제안 도착지</Label>
-              <Input
-                id="proposedDestinationPort"
-                value={responseData.proposedDestinationPort}
-                onChange={(e) => setResponseData({...responseData, proposedDestinationPort: e.target.value})}
-                placeholder="도착지를 입력하세요"
-              />
-            </div>
+              )}
 
-            <div className="space-y-2">
-              <Label htmlFor="sparePartResponse">스페어파트 응답</Label>
-              <Input
-                id="sparePartResponse"
-                value={responseData.sparePartResponse}
-                onChange={(e) => setResponseData({...responseData, sparePartResponse: e.target.value})}
-                placeholder="스페어파트 관련 응답을 입력하세요"
-              />
-            </div>
-          </div>
+          {/* 견적 첨부파일 섹션 */}
+          {biddingDetail && userId && (
+            <SimpleFileUpload
+              biddingId={biddingId}
+              companyId={companyId}
+              userId={userId}
+              readOnly={false}
+            />
+          )}
 
-          <div className="space-y-2">
-            <Label htmlFor="additionalProposals">추가 제안사항</Label>
+          {/* 기타 사항 */}
+          {/* <div className="space-y-2">
+            <Label htmlFor="additionalProposals">기타 사항</Label>
             <Textarea
               id="additionalProposals"
               value={responseData.additionalProposals}
               onChange={(e) => setResponseData({...responseData, additionalProposals: e.target.value})}
-              placeholder="추가 제안사항을 입력하세요"
+              placeholder="기타 특이사항이나 제안사항을 입력하세요"
               rows={4}
             />
-          </div>
-
-          <div className="space-y-4">
-            <div className="flex items-center space-x-2">
-              <Checkbox
-                id="isInitialResponse"
-                checked={responseData.isInitialResponse}
-                onCheckedChange={(checked) =>
-                  setResponseData({...responseData, isInitialResponse: !!checked})
-                }
-              />
-              <Label htmlFor="isInitialResponse">초도 공급입니다</Label>
-            </div>
-
-            <div className="flex items-center space-x-2">
-              <Checkbox
-                id="priceAdjustmentResponse"
-                checked={responseData.priceAdjustmentResponse}
-                onCheckedChange={(checked) =>
-                  setResponseData({...responseData, priceAdjustmentResponse: !!checked})
-                }
-              />
-              <Label htmlFor="priceAdjustmentResponse">연동제 적용에 동의합니다</Label>
-            </div>
-          </div>
-
-          {/* 연동제 상세 정보 (연동제 적용 시에만 표시) */}
-          {responseData.priceAdjustmentResponse && (
-            <Card className="mt-6">
-              <CardHeader>
-                <CardTitle className="text-lg">하도급대금등 연동표</CardTitle>
-              </CardHeader>
-              <CardContent className="space-y-4">
-                <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-                  <div className="space-y-2">
-                    <Label htmlFor="itemName">품목등의 명칭</Label>
-                    <Input
-                      id="itemName"
-                      value={priceAdjustmentForm.itemName}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, itemName: e.target.value})}
-                      placeholder="품목명을 입력하세요"
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="adjustmentReflectionPoint">조정대금 반영시점</Label>
-                    <Input
-                      id="adjustmentReflectionPoint"
-                      value={priceAdjustmentForm.adjustmentReflectionPoint}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentReflectionPoint: e.target.value})}
-                      placeholder="반영시점을 입력하세요"
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="adjustmentRatio">연동 비율 (%)</Label>
-                    <Input
-                      id="adjustmentRatio"
-                      type="number"
-                      step="0.01"
-                      value={priceAdjustmentForm.adjustmentRatio}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentRatio: e.target.value})}
-                      placeholder="비율을 입력하세요"
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="adjustmentPeriod">조정주기</Label>
-                    <Input
-                      id="adjustmentPeriod"
-                      value={priceAdjustmentForm.adjustmentPeriod}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentPeriod: e.target.value})}
-                      placeholder="조정주기를 입력하세요"
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="referenceDate">기준시점</Label>
-                    <Input
-                      id="referenceDate"
-                      type="date"
-                      value={priceAdjustmentForm.referenceDate}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, referenceDate: e.target.value})}
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="comparisonDate">비교시점</Label>
-                    <Input
-                      id="comparisonDate"
-                      type="date"
-                      value={priceAdjustmentForm.comparisonDate}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, comparisonDate: e.target.value})}
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="contractorWriter">수탁기업(협력사) 작성자</Label>
-                    <Input
-                      id="contractorWriter"
-                      value={priceAdjustmentForm.contractorWriter}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, contractorWriter: e.target.value})}
-                      placeholder="작성자명을 입력하세요"
-                    />
-                  </div>
-
-                  <div className="space-y-2">
-                    <Label htmlFor="adjustmentDate">조정일</Label>
-                    <Input
-                      id="adjustmentDate"
-                      type="date"
-                      value={priceAdjustmentForm.adjustmentDate}
-                      onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentDate: e.target.value})}
-                    />
-                  </div>
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="majorApplicableRawMaterial">연동대상 주요 원재료</Label>
-                  <Textarea
-                    id="majorApplicableRawMaterial"
-                    value={priceAdjustmentForm.majorApplicableRawMaterial}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, majorApplicableRawMaterial: e.target.value})}
-                    placeholder="연동 대상 원재료를 입력하세요"
-                    rows={3}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="adjustmentFormula">하도급대금등 연동 산식</Label>
-                  <Textarea
-                    id="adjustmentFormula"
-                    value={priceAdjustmentForm.adjustmentFormula}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentFormula: e.target.value})}
-                    placeholder="연동 산식을 입력하세요"
-                    rows={3}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="rawMaterialPriceIndex">원재료 가격 기준지표</Label>
-                  <Textarea
-                    id="rawMaterialPriceIndex"
-                    value={priceAdjustmentForm.rawMaterialPriceIndex}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, rawMaterialPriceIndex: e.target.value})}
-                    placeholder="가격 기준지표를 입력하세요"
-                    rows={2}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="adjustmentConditions">조정요건</Label>
-                  <Textarea
-                    id="adjustmentConditions"
-                    value={priceAdjustmentForm.adjustmentConditions}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, adjustmentConditions: e.target.value})}
-                    placeholder="조정요건을 입력하세요"
-                    rows={2}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="majorNonApplicableRawMaterial">연동 미적용 주요 원재료</Label>
-                  <Textarea
-                    id="majorNonApplicableRawMaterial"
-                    value={priceAdjustmentForm.majorNonApplicableRawMaterial}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, majorNonApplicableRawMaterial: e.target.value})}
-                    placeholder="연동 미적용 원재료를 입력하세요"
-                    rows={2}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="nonApplicableReason">연동 미적용 사유</Label>
-                  <Textarea
-                    id="nonApplicableReason"
-                    value={priceAdjustmentForm.nonApplicableReason}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, nonApplicableReason: e.target.value})}
-                    placeholder="미적용 사유를 입력하세요"
-                    rows={2}
-                  />
-                </div>
-
-                <div className="space-y-2">
-                  <Label htmlFor="priceAdjustmentNotes">기타 사항</Label>
-                  <Textarea
-                    id="priceAdjustmentNotes"
-                    value={priceAdjustmentForm.notes}
-                    onChange={(e) => setPriceAdjustmentForm({...priceAdjustmentForm, notes: e.target.value})}
-                    placeholder="기타 사항을 입력하세요"
-                    rows={2}
-                  />
-                </div>
-              </CardContent>
-            </Card>
-          )}
-
-          <div className="flex justify-end pt-4">
-            <Button onClick={handleSubmitResponse} disabled={isPending}>
+          </div> */}
+          {/* 응찰 제출 버튼 - 미응찰 상태가 아닐 때만 표시 */}
+            {(biddingDetail.isBiddingParticipated === true || biddingDetail.isBiddingParticipated === null) && (
+          <div className="flex justify-end pt-4 gap-2">
+            <Button 
+                    variant="outline" 
+                    onClick={handleSaveDraft}
+                    disabled={isSavingDraft || isSubmitting}
+                    className="min-w-[100px]"
+                  >
+                    <Save className="w-4 h-4 mr-2" />
+                    {isSavingDraft ? '저장 중...' : '임시 저장'}
+                  </Button>
+            <Button onClick={handleSubmitResponse} disabled={isSubmitting || isSavingDraft} className="min-w-[100px]">
               <Send className="w-4 h-4 mr-2" />
-              응찰 제출
+              {isSubmitting ? '제출 중...' : '응찰 제출'}
             </Button>
           </div>
+          )}
         </CardContent>
       </Card>
+      ) : null}
     </div>
   )
 }
diff --git a/lib/bidding/vendor/partners-bidding-list.tsx b/lib/bidding/vendor/partners-bidding-list.tsx
index 9f182911..2e8d4164 100644
--- a/lib/bidding/vendor/partners-bidding-list.tsx
+++ b/lib/bidding/vendor/partners-bidding-list.tsx
@@ -9,6 +9,7 @@ import type {
 } from '@/types/table'
 
 import { useDataTable } from '@/hooks/use-data-table'
+import { useToast } from '@/hooks/use-toast'
 import { DataTable } from '@/components/data-table/data-table'
 import { DataTableAdvancedToolbar } from '@/components/data-table/data-table-advanced-toolbar'
 import { getPartnersBiddingListColumns } from './partners-bidding-list-columns'
@@ -32,6 +33,7 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
   const [selectedBiddingForPreQuoteParticipation, setSelectedBiddingForPreQuoteParticipation] = React.useState<any | null>(null)
 
   const router = useRouter()
+  const { toast } = useToast()
 
   // 데이터 새로고침 함수
   const refreshData = React.useCallback(async () => {
@@ -89,6 +91,17 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
     if (rowAction) {
       switch (rowAction.type) {
         case 'view':
+          // 본입찰 초대 여부 확인
+          const bidding = rowAction.row.original
+          if (bidding.status === 'bidding_opened' && !bidding.isBiddingInvited) {
+            // 본입찰이 오픈되었지만 초대받지 않은 경우
+            toast({
+              title: '접근 제한',
+              description: '본입찰에 초대받지 않은 업체입니다.',
+              variant: 'destructive',
+            })
+            return
+          }
           // 상세 페이지로 이동 (biddingId 사용)
           router.push(`/partners/bid/${rowAction.row.original.biddingId}`)
           break
diff --git a/lib/bidding/vendor/partners-bidding-pre-quote.tsx b/lib/bidding/vendor/partners-bidding-pre-quote.tsx
index 94b76f58..4cd0efdb 100644
--- a/lib/bidding/vendor/partners-bidding-pre-quote.tsx
+++ b/lib/bidding/vendor/partners-bidding-pre-quote.tsx
@@ -746,12 +746,12 @@ export function PartnersBiddingPreQuote({ biddingId, companyId }: PartnersBiddin
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="additionalProposals">추가 제안사항</Label>
+            <Label htmlFor="additionalProposals">사유</Label>
             <Textarea
               id="additionalProposals"
               value={responseData.additionalProposals}
               onChange={(e) => setResponseData({...responseData, additionalProposals: e.target.value})}
-              placeholder="추가 제안사항을 입력하세요"
+              placeholder="사유를 입력하세요"
               rows={4}
             />
           </div>