ApprovalStep 디자인을 events/dashboard 기준으로 통일

- 페이지 배경을 gray[50]으로 변경하여 일관성 확보
- 이벤트 요약을 4개의 gradient 통계 카드로 재구성 (Purple, Blue, Orange, Mint)
- cardStyles.default와 responsiveText 시스템 적용
- 모든 카드에 일관된 패딩과 간격 적용 (p: {xs: 6, sm: 8})
- 버튼 텍스트 크기를 1rem으로 통일
- 다이얼로그 스타일링 개선 및 borderRadius 추가
- 채널 Chips를 purple 배경으로 변경

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/app/(main)/events/create/steps/ApprovalStep.tsx

@@ -17,26 +17,9 @@ import {
   DialogActions,
   Link,
 } from '@mui/material';
-import { ArrowBack, CheckCircle, Edit, RocketLaunch, Save } from '@mui/icons-material';
+import { ArrowBack, CheckCircle, Edit, RocketLaunch, Save, People, AttachMoney, TrendingUp } from '@mui/icons-material';
 import { EventData } from '../page';
-
-// 디자인 시스템 색상
-const colors = {
-  pink: '#F472B6',
-  purple: '#C084FC',
-  purpleLight: '#E9D5FF',
-  blue: '#60A5FA',
-  mint: '#34D399',
-  orange: '#FB923C',
-  yellow: '#FBBF24',
-  gray: {
-    900: '#1A1A1A',
-    700: '#4A4A4A',
-    500: '#9E9E9E',
-    300: '#D9D9D9',
-    100: '#F5F5F5',
-  },
-};
+import { cardStyles, colors, responsiveText } from '@/shared/lib/button-styles';
 
 interface ApprovalStepProps {
   eventData: EventData;
@@ -79,91 +62,144 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
   };
 
   return (
-    <Box sx={{ minHeight: '100vh', bgcolor: 'background.default', pb: 20 }}>
-      <Container maxWidth="md" sx={{ pt: 8, pb: 8, px: { xs: 6, sm: 6, md: 8 } }}>
+    <Box sx={{ minHeight: '100vh', bgcolor: colors.gray[50], pt: { xs: 7, sm: 8 }, pb: 10 }}>
+      <Container maxWidth="lg" sx={{ pt: 8, pb: 6, px: { xs: 6, sm: 8, md: 10 } }}>
         {/* Header */}
         <Box sx={{ display: 'flex', alignItems: 'center', gap: 3, mb: 8 }}>
           <IconButton onClick={onBack}>
             <ArrowBack />
           </IconButton>
-          <Typography variant="h5" sx={{ fontWeight: 700 }}>
+          <Typography variant="h5" sx={{ ...responsiveText.h3, fontWeight: 700 }}>
             최종 승인
           </Typography>
         </Box>
 
         {/* Title Section */}
-        <Box sx={{ textAlign: 'center', mb: 5 }}>
-          <CheckCircle sx={{ fontSize: 64, color: 'success.main', mb: 2 }} />
-          <Typography variant="h5" sx={{ fontWeight: 700, mb: 1 }}>
+        <Box sx={{ textAlign: 'center', mb: 10 }}>
+          <CheckCircle sx={{ fontSize: 64, color: colors.purple, mb: 2 }} />
+          <Typography variant="h5" sx={{ ...responsiveText.h3, fontWeight: 700, mb: 2 }}>
             이벤트를 확인해주세요
           </Typography>
-          <Typography variant="body1" color="text.secondary">
+          <Typography variant="body1" color="text.secondary" sx={{ ...responsiveText.body1 }}>
             모든 정보를 검토한 후 배포하세요
           </Typography>
         </Box>
 
-        {/* Event Summary Card */}
-        <Card elevation={0} sx={{ mb: 4, borderRadius: 4 }}>
-          <CardContent sx={{ p: 4 }}>
-            <Typography variant="h6" sx={{ fontWeight: 700, mb: 2 }}>
-              {eventData.recommendation?.title || '이벤트 제목'}
-            </Typography>
-
-            <Box sx={{ display: 'flex', gap: 1, mb: 3 }}>
-              <Chip label="배포 대기" color="warning" size="small" />
-              <Chip label="AI 추천" color="info" size="small" />
-            </Box>
-
-            <Grid container spacing={2} sx={{ pt: 2, borderTop: 1, borderColor: 'divider' }}>
-              <Grid item xs={6}>
-                <Typography variant="caption" color="text.secondary">
-                  이벤트 기간
+        {/* Event Summary Statistics */}
+        <Grid container spacing={4} sx={{ mb: 10 }}>
+          <Grid item xs={12} sm={6} md={3}>
+            <Card
+              elevation={0}
+              sx={{
+                ...cardStyles.default,
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.purpleLight} 100%)`,
+                borderColor: 'transparent',
+              }}
+            >
+              <CardContent sx={{ textAlign: 'center', py: 4, px: 3 }}>
+                <CheckCircle sx={{ fontSize: 32, color: 'white', mb: 1 }} />
+                <Typography variant="body2" sx={{ color: 'rgba(255,255,255,0.9)', fontSize: '0.875rem', mb: 1 }}>
+                  이벤트 제목
                 </Typography>
-                <Typography variant="body2" sx={{ fontWeight: 600 }}>
-                  2025.02.01 ~ 2025.02.28
+                <Typography
+                  variant="h6"
+                  sx={{ fontWeight: 700, color: 'white', fontSize: '1rem' }}
+                >
+                  {eventData.recommendation?.title || '이벤트 제목'}
                 </Typography>
-              </Grid>
-              <Grid item xs={6}>
-                <Typography variant="caption" color="text.secondary">
+              </CardContent>
+            </Card>
+          </Grid>
+          <Grid item xs={12} sm={6} md={3}>
+            <Card
+              elevation={0}
+              sx={{
+                ...cardStyles.default,
+                background: `linear-gradient(135deg, ${colors.blue} 0%, ${colors.blueLight} 100%)`,
+                borderColor: 'transparent',
+              }}
+            >
+              <CardContent sx={{ textAlign: 'center', py: 4, px: 3 }}>
+                <People sx={{ fontSize: 32, color: 'white', mb: 1 }} />
+                <Typography variant="body2" sx={{ color: 'rgba(255,255,255,0.9)', fontSize: '0.875rem', mb: 1 }}>
                   목표 참여자
                 </Typography>
-                <Typography variant="body2" sx={{ fontWeight: 600 }}>
-                  {eventData.recommendation?.expectedParticipants || 0}명
+                <Typography
+                  variant="h4"
+                  sx={{ fontWeight: 700, color: 'white', fontSize: '1.75rem' }}
+                >
+                  {eventData.recommendation?.expectedParticipants || 0}
+                  <Typography component="span" sx={{ fontSize: '1rem', ml: 0.5 }}>
+                    명
+                  </Typography>
                 </Typography>
-              </Grid>
-              <Grid item xs={6}>
-                <Typography variant="caption" color="text.secondary">
+              </CardContent>
+            </Card>
+          </Grid>
+          <Grid item xs={12} sm={6} md={3}>
+            <Card
+              elevation={0}
+              sx={{
+                ...cardStyles.default,
+                background: `linear-gradient(135deg, ${colors.orange} 0%, ${colors.orangeLight} 100%)`,
+                borderColor: 'transparent',
+              }}
+            >
+              <CardContent sx={{ textAlign: 'center', py: 4, px: 3 }}>
+                <AttachMoney sx={{ fontSize: 32, color: 'white', mb: 1 }} />
+                <Typography variant="body2" sx={{ color: 'rgba(255,255,255,0.9)', fontSize: '0.875rem', mb: 1 }}>
                   예상 비용
                 </Typography>
-                <Typography variant="body2" sx={{ fontWeight: 600 }}>
-                  {eventData.recommendation?.estimatedCost.toLocaleString() || 0}원
+                <Typography
+                  variant="h4"
+                  sx={{ fontWeight: 700, color: 'white', fontSize: '1.75rem' }}
+                >
+                  {((eventData.recommendation?.estimatedCost || 0) / 10000).toFixed(0)}
+                  <Typography component="span" sx={{ fontSize: '1rem', ml: 0.5 }}>
+                    만원
+                  </Typography>
                 </Typography>
-              </Grid>
-              <Grid item xs={6}>
-                <Typography variant="caption" color="text.secondary">
+              </CardContent>
+            </Card>
+          </Grid>
+          <Grid item xs={12} sm={6} md={3}>
+            <Card
+              elevation={0}
+              sx={{
+                ...cardStyles.default,
+                background: `linear-gradient(135deg, ${colors.mint} 0%, ${colors.mintLight} 100%)`,
+                borderColor: 'transparent',
+              }}
+            >
+              <CardContent sx={{ textAlign: 'center', py: 4, px: 3 }}>
+                <TrendingUp sx={{ fontSize: 32, color: 'white', mb: 1 }} />
+                <Typography variant="body2" sx={{ color: 'rgba(255,255,255,0.9)', fontSize: '0.875rem', mb: 1 }}>
                   예상 ROI
                 </Typography>
-                <Typography variant="body2" sx={{ fontWeight: 600, color: 'error.main' }}>
+                <Typography
+                  variant="h4"
+                  sx={{ fontWeight: 700, color: 'white', fontSize: '1.75rem' }}
+                >
                   {eventData.recommendation?.roi || 0}%
                 </Typography>
-              </Grid>
-            </Grid>
-          </CardContent>
-        </Card>
+              </CardContent>
+            </Card>
+          </Grid>
+        </Grid>
 
         {/* Event Details */}
-        <Typography variant="h6" sx={{ fontWeight: 700, mb: 3 }}>
+        <Typography variant="h6" sx={{ ...responsiveText.h4, fontWeight: 700, mb: 6 }}>
           이벤트 상세
         </Typography>
 
-        <Card elevation={0} sx={{ mb: 2, borderRadius: 4 }}>
-          <CardContent sx={{ p: 3 }}>
+        <Card elevation={0} sx={{ ...cardStyles.default, mb: 4 }}>
+          <CardContent sx={{ p: { xs: 6, sm: 8 } }}>
             <Box sx={{ display: 'flex', alignItems: 'flex-start', gap: 2 }}>
               <Box sx={{ flex: 1 }}>
-                <Typography variant="caption" color="text.secondary">
+                <Typography variant="caption" color="text.secondary" sx={{ ...responsiveText.body2, fontSize: '0.875rem' }}>
                   이벤트 제목
                 </Typography>
-                <Typography variant="body1" sx={{ fontWeight: 600 }}>
+                <Typography variant="body1" sx={{ ...responsiveText.body1, fontWeight: 600, mt: 1 }}>
                   {eventData.recommendation?.title}
                 </Typography>
               </Box>
@@ -174,14 +210,14 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
           </CardContent>
         </Card>
 
-        <Card elevation={0} sx={{ mb: 2, borderRadius: 4 }}>
-          <CardContent sx={{ p: 3 }}>
+        <Card elevation={0} sx={{ ...cardStyles.default, mb: 4 }}>
+          <CardContent sx={{ p: { xs: 6, sm: 8 } }}>
             <Box sx={{ display: 'flex', alignItems: 'flex-start', gap: 2 }}>
               <Box sx={{ flex: 1 }}>
-                <Typography variant="caption" color="text.secondary">
+                <Typography variant="caption" color="text.secondary" sx={{ ...responsiveText.body2, fontSize: '0.875rem' }}>
                   경품
                 </Typography>
-                <Typography variant="body1" sx={{ fontWeight: 600 }}>
+                <Typography variant="body1" sx={{ ...responsiveText.body1, fontWeight: 600, mt: 1 }}>
                   {eventData.recommendation?.prize}
                 </Typography>
               </Box>
@@ -192,14 +228,14 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
           </CardContent>
         </Card>
 
-        <Card elevation={0} sx={{ mb: 2, borderRadius: 4 }}>
-          <CardContent sx={{ p: 3 }}>
+        <Card elevation={0} sx={{ ...cardStyles.default, mb: 10 }}>
+          <CardContent sx={{ p: { xs: 6, sm: 8 } }}>
             <Box sx={{ display: 'flex', alignItems: 'flex-start', gap: 2 }}>
               <Box sx={{ flex: 1 }}>
-                <Typography variant="caption" color="text.secondary">
+                <Typography variant="caption" color="text.secondary" sx={{ ...responsiveText.body2, fontSize: '0.875rem' }}>
                   참여 방법
                 </Typography>
-                <Typography variant="body1" sx={{ fontWeight: 600 }}>
+                <Typography variant="body1" sx={{ ...responsiveText.body1, fontWeight: 600, mt: 1 }}>
                   {eventData.recommendation?.participationMethod}
                 </Typography>
               </Box>
@@ -208,21 +244,36 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
         </Card>
 
         {/* Distribution Channels */}
-        <Typography variant="h6" sx={{ fontWeight: 700, mb: 3, mt: 4 }}>
+        <Typography variant="h6" sx={{ ...responsiveText.h4, fontWeight: 700, mb: 6 }}>
           배포 채널
         </Typography>
 
-        <Card elevation={0} sx={{ mb: 4, borderRadius: 4 }}>
-          <CardContent sx={{ p: 3 }}>
-            <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 1, mb: 2 }}>
+        <Card elevation={0} sx={{ ...cardStyles.default, mb: 10 }}>
+          <CardContent sx={{ p: { xs: 6, sm: 8 } }}>
+            <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 2, mb: 4 }}>
               {getChannelNames(eventData.channels).map((channel) => (
-                <Chip key={channel} label={channel} color="primary" variant="outlined" />
+                <Chip
+                  key={channel}
+                  label={channel}
+                  sx={{
+                    bgcolor: colors.purple,
+                    color: 'white',
+                    fontWeight: 600,
+                    fontSize: '0.875rem',
+                    px: 2,
+                    py: 2.5,
+                  }}
+                />
               ))}
             </Box>
             <Button
               size="small"
               startIcon={<Edit />}
-              sx={{ color: 'primary.main' }}
+              sx={{
+                ...responsiveText.body2,
+                fontWeight: 600,
+                color: colors.purple,
+              }}
             >
               채널 수정하기
             </Button>
@@ -230,19 +281,27 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
         </Card>
 
         {/* Terms Agreement */}
-        <Card elevation={0} sx={{ mb: 5, borderRadius: 4, bgcolor: 'grey.50' }}>
-          <CardContent sx={{ p: 3 }}>
+        <Card elevation={0} sx={{ ...cardStyles.default, bgcolor: colors.gray[50], mb: 10 }}>
+          <CardContent sx={{ p: { xs: 6, sm: 8 } }}>
             <FormControlLabel
               control={
                 <Checkbox
                   checked={agreeTerms}
                   onChange={(e) => setAgreeTerms(e.target.checked)}
+                  sx={{
+                    color: colors.purple,
+                    '&.Mui-checked': {
+                      color: colors.purple,
+                    },
+                  }}
                 />
               }
               label={
-                <Typography variant="body2">
+                <Typography variant="body2" sx={{ ...responsiveText.body1 }}>
                   이벤트 약관 및 개인정보 처리방침에 동의합니다{' '}
-                  <span style={{ color: 'red' }}>(필수)</span>
+                  <Typography component="span" sx={{ color: colors.orange, fontWeight: 600 }}>
+                    (필수)
+                  </Typography>
                 </Typography>
               }
             />
@@ -250,7 +309,7 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
               component="button"
               variant="body2"
               onClick={() => setTermsDialogOpen(true)}
-              sx={{ color: 'error.main', ml: 4, mt: 1 }}
+              sx={{ ...responsiveText.body2, ml: 4, mt: 2, fontWeight: 600, color: colors.purple }}
             >
               약관 보기
             </Link>
@@ -258,7 +317,7 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
         </Card>
 
         {/* Action Buttons */}
-        <Box sx={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
+        <Box sx={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
           <Button
             fullWidth
             variant="contained"
@@ -266,7 +325,20 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
             disabled={!agreeTerms || isDeploying}
             onClick={handleApprove}
             startIcon={isDeploying ? null : <RocketLaunch />}
-            sx={{ py: 1.5 }}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+              '&:disabled': {
+                background: colors.gray[300],
+              },
+            }}
           >
             {isDeploying ? '배포 중...' : '배포하기'}
           </Button>
@@ -276,7 +348,20 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
             size="large"
             onClick={handleSaveDraft}
             startIcon={<Save />}
-            sx={{ py: 1.5 }}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 600,
+              borderWidth: 2,
+              borderColor: colors.gray[300],
+              color: colors.gray[700],
+              '&:hover': {
+                borderWidth: 2,
+                borderColor: colors.gray[400],
+                bgcolor: colors.gray[50],
+              },
+            }}
           >
             임시저장
           </Button>
@@ -289,39 +374,61 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
         onClose={() => setTermsDialogOpen(false)}
         maxWidth="sm"
         fullWidth
+        PaperProps={{
+          sx: {
+            borderRadius: 4,
+          },
+        }}
       >
-        <DialogTitle>이벤트 약관</DialogTitle>
-        <DialogContent>
-          <Typography variant="h6" sx={{ mb: 2 }}>
+        <DialogTitle sx={{ ...responsiveText.h3, fontWeight: 700, p: 6, pb: 4 }}>
+          이벤트 약관
+        </DialogTitle>
+        <DialogContent sx={{ px: 6, pb: 6 }}>
+          <Typography variant="h6" sx={{ ...responsiveText.h4, fontWeight: 700, mb: 3 }}>
             제1조 (목적)
           </Typography>
-          <Typography variant="body2" sx={{ mb: 3 }}>
+          <Typography variant="body2" sx={{ ...responsiveText.body1, mb: 6, color: colors.gray[700] }}>
             본 약관은 KT AI 이벤트 마케팅 서비스를 통해 진행되는 이벤트의 참여 및 개인정보 처리에 관한
             사항을 규정합니다.
           </Typography>
 
-          <Typography variant="h6" sx={{ mb: 2 }}>
+          <Typography variant="h6" sx={{ ...responsiveText.h4, fontWeight: 700, mb: 3 }}>
             제2조 (개인정보 수집 및 이용)
           </Typography>
-          <Typography variant="body2" sx={{ mb: 1 }}>
+          <Typography variant="body2" sx={{ ...responsiveText.body1, mb: 2, color: colors.gray[700] }}>
             수집 항목: 이름, 전화번호, 이메일
           </Typography>
-          <Typography variant="body2" sx={{ mb: 1 }}>
+          <Typography variant="body2" sx={{ ...responsiveText.body1, mb: 2, color: colors.gray[700] }}>
             이용 목적: 이벤트 참여 확인 및 경품 제공
           </Typography>
-          <Typography variant="body2" sx={{ mb: 3 }}>
+          <Typography variant="body2" sx={{ ...responsiveText.body1, mb: 6, color: colors.gray[700] }}>
             보유 기간: 이벤트 종료 후 6개월
           </Typography>
 
-          <Typography variant="h6" sx={{ mb: 2 }}>
+          <Typography variant="h6" sx={{ ...responsiveText.h4, fontWeight: 700, mb: 3 }}>
             제3조 (당첨자 발표)
           </Typography>
-          <Typography variant="body2">
+          <Typography variant="body2" sx={{ ...responsiveText.body1, color: colors.gray[700] }}>
             당첨자는 이벤트 종료 후 7일 이내 개별 연락 드립니다.
           </Typography>
         </DialogContent>
-        <DialogActions>
-          <Button onClick={() => setTermsDialogOpen(false)} variant="contained">
+        <DialogActions sx={{ p: 6, pt: 4 }}>
+          <Button
+            fullWidth
+            onClick={() => setTermsDialogOpen(false)}
+            variant="contained"
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+            }}
+          >
             확인
           </Button>
         </DialogActions>
@@ -334,30 +441,44 @@ export default function ApprovalStep({ eventData, onApprove, onBack }: ApprovalS
           setSuccessDialogOpen(false);
           onApprove();
         }}
+        PaperProps={{
+          sx: {
+            borderRadius: 4,
+          },
+        }}
       >
-        <DialogContent sx={{ textAlign: 'center', py: 6, px: 4 }}>
-          <CheckCircle sx={{ fontSize: 80, color: 'success.main', mb: 2 }} />
-          <Typography variant="h5" sx={{ fontWeight: 700, mb: 1 }}>
+        <DialogContent sx={{ textAlign: 'center', py: 10, px: 8 }}>
+          <CheckCircle sx={{ fontSize: 80, color: colors.purple, mb: 4 }} />
+          <Typography variant="h5" sx={{ fontSize: '1.5rem', fontWeight: 700, mb: 3 }}>
             배포 완료!
           </Typography>
-          <Typography variant="body1" color="text.secondary" sx={{ mb: 4 }}>
+          <Typography variant="body1" color="text.secondary" sx={{ fontSize: '1rem', mb: 8 }}>
             이벤트가 성공적으로 배포되었습니다.
             <br />
             실시간으로 참여자를 확인할 수 있습니다.
           </Typography>
-          <Box sx={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
-            <Button
-              fullWidth
-              variant="contained"
-              size="large"
-              onClick={() => {
-                setSuccessDialogOpen(false);
-                onApprove();
-              }}
-            >
-              대시보드로 이동
-            </Button>
-          </Box>
+          <Button
+            fullWidth
+            variant="contained"
+            size="large"
+            onClick={() => {
+              setSuccessDialogOpen(false);
+              onApprove();
+            }}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+            }}
+          >
+            대시보드로 이동
+          </Button>
         </DialogContent>
       </Dialog>
     </Box>

src/app/(main)/events/create/steps/ChannelStep.tsx

@@ -522,6 +522,14 @@ export default function ChannelStep({ onNext, onBack }: ChannelStepProps) {
               borderRadius: 3,
               fontSize: '1rem',
               fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+              '&:disabled': {
+                background: colors.gray[300],
+              },
             }}
           >
             다음

src/app/(main)/events/create/steps/ContentEditStep.tsx

@@ -163,11 +163,42 @@ export default function ContentEditStep({
         </Grid>
 
         {/* Action Buttons */}
-        <Box sx={{ display: 'flex', gap: 2, mt: 5 }}>
-          <Button fullWidth variant="outlined" size="large" onClick={handleSave} sx={{ py: 1.5 }}>
+        <Box sx={{ display: 'flex', gap: 4, mt: 5 }}>
+          <Button
+            fullWidth
+            variant="outlined"
+            size="large"
+            onClick={handleSave}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 600,
+              borderWidth: 2,
+              '&:hover': {
+                borderWidth: 2,
+              },
+            }}
+          >
             저장
           </Button>
-          <Button fullWidth variant="contained" size="large" onClick={handleNext} sx={{ py: 1.5 }}>
+          <Button
+            fullWidth
+            variant="contained"
+            size="large"
+            onClick={handleNext}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+            }}
+          >
             다음 단계
           </Button>
         </Box>

src/app/(main)/events/create/steps/ContentPreviewStep.tsx

@@ -11,6 +11,7 @@ import {
   FormControlLabel,
   IconButton,
   Dialog,
+  Grid,
 } from '@mui/material';
 import { ArrowBack, ZoomIn, Psychology } from '@mui/icons-material';
 
@@ -110,22 +111,22 @@ export default function ContentPreviewStep({
   if (loading) {
     return (
       <Box sx={{ minHeight: '100vh', bgcolor: 'background.default', pb: 20 }}>
-        <Container maxWidth="md" sx={{ pt: 8, pb: 8, px: { xs: 6, sm: 6, md: 8 } }}>
+        <Container maxWidth="lg" sx={{ pt: 8, pb: 8, px: { xs: 6, sm: 6, md: 8 } }}>
           <Box sx={{ display: 'flex', alignItems: 'center', gap: 3, mb: 8 }}>
             <IconButton onClick={onBack}>
               <ArrowBack />
             </IconButton>
-            <Typography variant="h5" sx={{ fontWeight: 700 }}>
+            <Typography variant="h5" sx={{ fontWeight: 700, fontSize: '1.5rem' }}>
               SNS 이미지 생성
             </Typography>
           </Box>
 
-          <Box sx={{ textAlign: 'center', mt: 10, mb: 10 }}>
+          <Box sx={{ textAlign: 'center', mt: 15, mb: 15 }}>
             <Psychology
               sx={{
-                fontSize: 64,
-                color: 'info.main',
-                mb: 2,
+                fontSize: 80,
+                color: colors.purple,
+                mb: 4,
                 animation: 'spin 2s linear infinite',
                 '@keyframes spin': {
                   '0%': { transform: 'rotate(0deg)' },
@@ -133,15 +134,15 @@ export default function ContentPreviewStep({
                 },
               }}
             />
-            <Typography variant="h6" sx={{ fontWeight: 700, mb: 1 }}>
+            <Typography variant="h5" sx={{ fontWeight: 700, mb: 3, fontSize: '1.5rem' }}>
               AI 이미지 생성 중
             </Typography>
-            <Typography variant="body1" color="text.secondary" sx={{ mb: 2 }}>
+            <Typography variant="body1" color="text.secondary" sx={{ mb: 3, fontSize: '1.125rem' }}>
               딥러닝 모델이 이벤트에 어울리는
               <br />
               이미지를 생성하고 있어요...
             </Typography>
-            <Typography variant="caption" color="text.secondary">
+            <Typography variant="body2" color="text.secondary" sx={{ fontSize: '1rem' }}>
               예상 시간: 5초
             </Typography>
           </Box>
@@ -152,133 +153,147 @@ export default function ContentPreviewStep({
 
   return (
     <Box sx={{ minHeight: '100vh', bgcolor: 'background.default', pb: 20 }}>
-      <Container maxWidth="md" sx={{ pt: 8, pb: 8, px: { xs: 6, sm: 6, md: 8 } }}>
+      <Container maxWidth="lg" sx={{ pt: 8, pb: 8, px: { xs: 6, sm: 6, md: 8 } }}>
         {/* Header */}
         <Box sx={{ display: 'flex', alignItems: 'center', gap: 3, mb: 8 }}>
           <IconButton onClick={onBack}>
             <ArrowBack />
           </IconButton>
-          <Typography variant="h5" sx={{ fontWeight: 700 }}>
+          <Typography variant="h5" sx={{ fontWeight: 700, fontSize: '1.5rem' }}>
             SNS 이미지 생성
           </Typography>
         </Box>
 
+        <Typography variant="body2" color="text.secondary" sx={{ mb: 8, textAlign: 'center', fontSize: '1rem' }}>
+          이벤트에 어울리는 스타일을 선택하세요
+        </Typography>
+
         <RadioGroup value={selectedStyle} onChange={(e) => handleStyleSelect(e.target.value)}>
-          {imageStyles.map((style) => (
-            <Box key={style.id} sx={{ mb: 4 }}>
-              <Typography variant="h6" sx={{ fontWeight: 700, mb: 2 }}>
-                {style.name}
-              </Typography>
+          <Grid container spacing={6} sx={{ mb: 10 }}>
+            {imageStyles.map((style) => (
+              <Grid item xs={12} md={4} key={style.id}>
+                <Card
+                  elevation={0}
+                  sx={{
+                    cursor: 'pointer',
+                    borderRadius: 4,
+                    border: selectedStyle === style.id ? 2 : 1,
+                    borderColor: selectedStyle === style.id ? colors.purple : 'divider',
+                    bgcolor: selectedStyle === style.id ? `${colors.purpleLight}40` : 'background.paper',
+                    transition: 'all 0.3s',
+                    position: 'relative',
+                    boxShadow: selectedStyle === style.id ? '0 4px 12px rgba(0, 0, 0, 0.15)' : '0 2px 8px rgba(0, 0, 0, 0.08)',
+                    '&:hover': {
+                      borderColor: colors.purple,
+                      transform: 'translateY(-2px)',
+                      boxShadow: '0 8px 16px rgba(0, 0, 0, 0.15)',
+                    },
+                  }}
+                  onClick={() => handleStyleSelect(style.id)}
+                >
+                  <CardContent sx={{ p: 0 }}>
+                    {/* 스타일 이름 */}
+                    <Box sx={{ p: 4, borderBottom: 1, borderColor: 'divider', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+                      <Typography variant="h6" sx={{ fontWeight: 700, fontSize: '1.125rem' }}>
+                        {style.name}
+                      </Typography>
+                      <FormControlLabel
+                        value={style.id}
+                        control={<Radio sx={{ color: colors.purple, '&.Mui-checked': { color: colors.purple } }} />}
+                        label=""
+                        sx={{ m: 0 }}
+                      />
+                    </Box>
 
-              <Card
-                elevation={0}
-                sx={{
-                  cursor: 'pointer',
-                  borderRadius: 4,
-                  border: selectedStyle === style.id ? 3 : 1,
-                  borderColor: selectedStyle === style.id ? 'error.main' : 'divider',
-                  transition: 'all 0.3s',
-                  position: 'relative',
-                  '&:hover': {
-                    transform: 'translateY(-2px)',
-                    boxShadow: '0 8px 16px rgba(0, 0, 0, 0.1)',
-                  },
-                }}
-                onClick={() => handleStyleSelect(style.id)}
-              >
-                {selectedStyle === style.id && (
-                  <Box
-                    sx={{
-                      position: 'absolute',
-                      top: 16,
-                      right: 16,
-                      width: 32,
-                      height: 32,
-                      borderRadius: '50%',
-                      bgcolor: 'error.main',
-                      color: 'white',
-                      display: 'flex',
-                      alignItems: 'center',
-                      justifyContent: 'center',
-                      zIndex: 10,
-                    }}
-                  >
-                    <span className="material-icons" style={{ fontSize: 20 }}>
-                      check
-                    </span>
-                  </Box>
-                )}
-
-                <CardContent sx={{ p: 0 }}>
-                  <Box
-                    sx={{
-                      width: '100%',
-                      aspectRatio: '1 / 1',
-                      background: style.gradient || '#f5f5f5',
-                      borderRadius: '12px 12px 0 0',
-                      display: 'flex',
-                      flexDirection: 'column',
-                      alignItems: 'center',
-                      justifyContent: 'center',
-                      p: 4,
-                      textAlign: 'center',
-                    }}
-                  >
-                    <span
-                      className="material-icons"
-                      style={{
-                        fontSize: 48,
-                        marginBottom: 16,
-                        color: style.textColor || 'inherit',
-                      }}
-                    >
-                      {style.icon}
-                    </span>
-                    <Typography
-                      variant="body1"
+                    {/* 이미지 프리뷰 */}
+                    <Box
                       sx={{
-                        fontWeight: 600,
-                        mb: 1,
-                        color: style.textColor || 'text.primary',
+                        width: '100%',
+                        aspectRatio: '1 / 1',
+                        background: style.gradient || colors.gray[100],
+                        display: 'flex',
+                        flexDirection: 'column',
+                        alignItems: 'center',
+                        justifyContent: 'center',
+                        p: 6,
+                        textAlign: 'center',
                       }}
                     >
-                      {title}
-                    </Typography>
-                    <Typography
-                      variant="caption"
-                      sx={{
-                        color: style.textColor || 'text.secondary',
-                        opacity: style.textColor ? 0.9 : 1,
-                      }}
-                    >
-                      {prize}
-                    </Typography>
-                  </Box>
+                      <span
+                        className="material-icons"
+                        style={{
+                          fontSize: 64,
+                          marginBottom: 24,
+                          color: style.textColor || colors.gray[700],
+                        }}
+                      >
+                        {style.icon}
+                      </span>
+                      <Typography
+                        variant="h6"
+                        sx={{
+                          fontWeight: 700,
+                          mb: 2,
+                          color: style.textColor || 'text.primary',
+                          fontSize: '1.25rem',
+                        }}
+                      >
+                        {title}
+                      </Typography>
+                      <Typography
+                        variant="body1"
+                        sx={{
+                          color: style.textColor || 'text.secondary',
+                          opacity: style.textColor ? 0.9 : 1,
+                          fontSize: '1rem',
+                        }}
+                      >
+                        {prize}
+                      </Typography>
+                    </Box>
 
-                  <Box sx={{ p: 2, display: 'flex', justifyContent: 'flex-end' }}>
-                    <Button
-                      size="small"
-                      startIcon={<ZoomIn />}
-                      onClick={(e) => handlePreview(style, e)}
-                    >
-                      크게보기
-                    </Button>
-                    <FormControlLabel
-                      value={style.id}
-                      control={<Radio sx={{ display: 'none' }} />}
-                      label=""
-                      sx={{ display: 'none' }}
-                    />
-                  </Box>
-                </CardContent>
-              </Card>
-            </Box>
-          ))}
+                    {/* 크게보기 버튼 */}
+                    <Box sx={{ p: 4, display: 'flex', justifyContent: 'center' }}>
+                      <Button
+                        variant="outlined"
+                        startIcon={<ZoomIn />}
+                        onClick={(e) => handlePreview(style, e)}
+                        sx={{
+                          borderRadius: 2,
+                          py: 1.5,
+                          px: 4,
+                          fontSize: '0.875rem',
+                          fontWeight: 600,
+                        }}
+                      >
+                        크게보기
+                      </Button>
+                    </Box>
+                  </CardContent>
+                </Card>
+              </Grid>
+            ))}
+          </Grid>
         </RadioGroup>
 
         {/* Action Buttons */}
-        <Box sx={{ display: 'flex', gap: 2, mt: 5 }}>
-          <Button fullWidth variant="outlined" size="large" onClick={onSkip} sx={{ py: 1.5 }}>
+        <Box sx={{ display: 'flex', gap: 4 }}>
+          <Button
+            fullWidth
+            variant="outlined"
+            size="large"
+            onClick={onSkip}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 600,
+              borderWidth: 2,
+              '&:hover': {
+                borderWidth: 2,
+              },
+            }}
+          >
             건너뛰기
           </Button>
           <Button
@@ -287,7 +302,20 @@ export default function ContentPreviewStep({
             size="large"
             disabled={!selectedStyle}
             onClick={handleNext}
-            sx={{ py: 1.5 }}
+            sx={{
+              py: 3,
+              borderRadius: 3,
+              fontSize: '1rem',
+              fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+              '&:disabled': {
+                background: colors.gray[300],
+              },
+            }}
           >
             다음
           </Button>

src/app/(main)/events/create/steps/RecommendationStep.tsx

@@ -388,6 +388,14 @@ export default function RecommendationStep({ onNext, onBack }: RecommendationSte
               borderRadius: 3,
               fontSize: '1rem',
               fontWeight: 700,
+              background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+              '&:hover': {
+                background: `linear-gradient(135deg, ${colors.purple} 0%, ${colors.pink} 100%)`,
+                opacity: 0.9,
+              },
+              '&:disabled': {
+                background: colors.gray[300],
+              },
             }}
           >
             다음