[♻️ Refactor] 이미지업로드 아이콘 변경

src/assets/icons/index.ts

@@ -41,3 +41,4 @@ export { default as User } from './page/user.svg';
 export { default as Warning } from './page/warning.svg';
 export { default as Wellbeing } from './page/wellbeing.svg';
 export { default as Burger } from './page/burger.svg';
+export { default as FallbackImage } from './page/fallback_image.svg';

src/components/common/card/CardContainer.tsx

@@ -21,7 +21,7 @@ interface Props {
  */
 export default function CardContainer({ variant, children, className }: Props) {
   const baseLayout = {
-    grid: 'flex flex-col lg:w-65.5 shadow-[0_0_20px_rgba(0,0,0,0.08)] rounded-3xl overflow-hidden',
+    grid: 'flex flex-col w-full shadow-[0_0_20px_rgba(0,0,0,0.08)] rounded-3xl overflow-hidden',
     list: 'flex justify-between items-center bg-white rounded-3xl p-6 md:w-119 lg:w-160 shadow-[0_4px_24px_0_rgba(156,180,202,0.20)]',
     reservation: 'flex w-full flex-col lg:flex-row ',
   }[variant];

src/components/common/image-upload/ImageUpload.tsx

@@ -1,4 +1,4 @@
-import { Delete, PasswordHidden } from '@/assets/icons';
+import { Delete, FallbackImage } from '@/assets/icons';
 import { useEffect, useRef, useState } from 'react';
 import imageCompression from 'browser-image-compression';
 type ImageUploadProps = {
@@ -91,7 +91,7 @@ export default function ImageUpload({
           type='button'
           onClick={handleClick}
           className='flex h-20 w-20 flex-col items-center justify-center gap-0.5 rounded-md border border-gray-100 bg-white px-5 py-1.5 sm:h-32 sm:w-32 sm:gap-2.5 sm:rounded-2xl sm:py-4'>
-          <PasswordHidden className='h-10 w-10 px-[6.67px] pt-2.5 pb-[6.14px] text-gray-400' />
+          <FallbackImage className='h-10 w-10 px-[6.67px] pt-2.5 pb-[6.14px] text-gray-400' />
           <div className='font-sm-medium md:font-md-medium text-gray-600'>
             {fileCount}/{maxFiles}
           </div>

src/pages/ActivityDetail/ActivityReviews.tsx

@@ -1,6 +1,7 @@
 import { useState } from 'react';
 import Title from '@/components/common/Title';
 import Pagination from '@/components/common/pagination';
+import RatingStar from '@/components/common/RatingStar';
 import { Star } from '@/assets/icons';
 import { useActivityReviews } from '@/hooks/queries/useActivityReviews';
 
@@ -106,14 +107,10 @@ export default function ActivityReviews({ activityId }: ActivityReviewsProps) {
                 <span className='font-md-bold text-gray-900'>{review.user.nickname}</span>
                 <span className='font-md-medium text-gray-500'>{formattedDate}</span>
               </div>
-              <div className='mb-2 flex items-center gap-1'>
-                {Array.from({ length: 5 }).map((_, i) => (
-                  <Star
-                    key={i}
-                    className={`h-4 w-4 ${i < Math.floor(review.rating) ? 'text-yellow-500' : 'text-gray-300'}`}
-                  />
-                ))}
-              </div>
+              <RatingStar
+                value={review.rating}
+                className='mb-2 gap-1 [&_button]:h-4 [&_svg]:h-4 [&_svg]:w-4'
+              />
               <p className='font-md-medium text-gray-800'>{review.content}</p>
             </div>
           );

src/pages/ActivityDetailPage.tsx

@@ -298,7 +298,7 @@ function ActivityDetailPage() {
 
           {/* 우측 영역 - 예약 정보 (데스크톱) */}
           <aside className='hidden lg:block lg:w-[384px]'>
-            <div className='sticky top-6'>
+            <div className='sticky top-24'>
               {/* 상단 정보 영역 */}
               <ActivityInfo
                 category={activity.category}

src/pages/CreateActivityPage.tsx

@@ -79,11 +79,19 @@ export default function CreateActivityPage() {
       //toISOString() 하면 "2026-01-02T00:00:00.000Z" 이런 문자열이 됨
       //split('T')[0] 하면 "2026-01-02"만 뽑음
       // 서버가 원하는 날짜 형식 완성
-      const schedules = values.rows.map((row) => ({
-        date: row.date.toISOString().split('T')[0],
-        startTime: row.startTime,
-        endTime: row.endTime,
-      }));
+      const schedules = values.rows.map((row) => {
+        const d = row.date;
+
+        const yyyy = d.getFullYear();
+        const mm = String(d.getMonth() + 1).padStart(2, '0');
+        const dd = String(d.getDate()).padStart(2, '0');
+
+        return {
+          date: `${yyyy}-${mm}-${dd}`,
+          startTime: row.startTime,
+          endTime: row.endTime,
+        };
+      });
 
       // 3) 최종 payload
       const payload: CreateActivityRequest = {