diff --git a/frontend/src/features/admin/AdminPanel.tsx b/frontend/src/features/admin/AdminPanel.tsx
index 5761c36..e83874c 100644
--- a/frontend/src/features/admin/AdminPanel.tsx
+++ b/frontend/src/features/admin/AdminPanel.tsx
@@ -1,6 +1,8 @@
 import { useTranslation } from 'react-i18next';
 import { Card, CardContent, CardHeader, CardTitle } from '@shared/components/ui/card';
+import { Badge } from '@shared/components/ui/badge';
 import { PageContainer, PageHeader } from '@shared/components/layout';
+import { getStatusIntent } from '@shared/constants/statusIntent';
 import { Settings, Server, Shield, Database } from 'lucide-react';
 
 /*
@@ -49,9 +51,7 @@ export function AdminPanel() {
                   <Server className="w-4 h-4 text-hint" />
                   <span className="text-[11px] font-bold text-heading">{s.name}</span>
                 </div>
-                <span className={`text-[9px] font-bold px-2 py-0.5 rounded ${
-                  s.status === '정상' ? 'bg-green-500/20 text-green-400' : s.status === '주의' ? 'bg-yellow-500/20 text-yellow-400' : 'bg-red-500/20 text-red-400'
-                }`}>{s.status}</span>
+                <Badge intent={getStatusIntent(s.status)} size="xs">{s.status}</Badge>
               </div>
               <div className="space-y-1.5">
                 <div className="flex items-center justify-between"><span className="text-[9px] text-hint">CPU</span><UsageBar value={s.cpu} /></div>
diff --git a/frontend/src/features/admin/DataHub.tsx b/frontend/src/features/admin/DataHub.tsx
index df29c54..7071838 100644
--- a/frontend/src/features/admin/DataHub.tsx
+++ b/frontend/src/features/admin/DataHub.tsx
@@ -3,6 +3,7 @@ import { useTranslation } from 'react-i18next';
 import { Card, CardContent, CardHeader, CardTitle } from '@shared/components/ui/card';
 import { Badge } from '@shared/components/ui/badge';
 import { Button } from '@shared/components/ui/button';
+import { TabBar, TabButton } from '@shared/components/ui/tabs';
 import { PageContainer, PageHeader } from '@shared/components/layout';
 import { DataTable, type DataColumn } from '@shared/components/common/DataTable';
 import { SaveButton } from '@shared/components/common/SaveButton';
@@ -239,12 +240,12 @@ const collectColumns: DataColumn<CollectJob>[] = [
     render: (_v, row) => (
       <div className="flex items-center gap-0.5">
         {row.status === '정지' ? (
-          <button className="p-1 text-hint hover:text-green-400" title="시작"><Play className="w-3 h-3" /></button>
+          <button type="button" className="p-1 text-hint hover:text-green-400" title="시작"><Play className="w-3 h-3" /></button>
         ) : row.status !== '장애발생' ? (
-          <button className="p-1 text-hint hover:text-orange-400" title="정지"><Square className="w-3 h-3" /></button>
+          <button type="button" className="p-1 text-hint hover:text-orange-400" title="정지"><Square className="w-3 h-3" /></button>
         ) : null}
-        <button className="p-1 text-hint hover:text-blue-400" title="편집"><Edit2 className="w-3 h-3" /></button>
-        <button className="p-1 text-hint hover:text-cyan-400" title="이력"><FileText className="w-3 h-3" /></button>
+        <button type="button" className="p-1 text-hint hover:text-blue-400" title="편집"><Edit2 className="w-3 h-3" /></button>
+        <button type="button" className="p-1 text-hint hover:text-cyan-400" title="이력"><FileText className="w-3 h-3" /></button>
       </div>
     ),
   },
@@ -290,9 +291,9 @@ const loadColumns: DataColumn<LoadJob>[] = [
   { key: 'id', label: '', width: '70px', align: 'center', sortable: false,
     render: () => (
       <div className="flex items-center gap-0.5">
-        <button className="p-1 text-hint hover:text-blue-400" title="편집"><Edit2 className="w-3 h-3" /></button>
-        <button className="p-1 text-hint hover:text-cyan-400" title="이력"><FileText className="w-3 h-3" /></button>
-        <button className="p-1 text-hint hover:text-orange-400" title="스토리지"><HardDrive className="w-3 h-3" /></button>
+        <button type="button" className="p-1 text-hint hover:text-blue-400" title="편집"><Edit2 className="w-3 h-3" /></button>
+        <button type="button" className="p-1 text-hint hover:text-cyan-400" title="이력"><FileText className="w-3 h-3" /></button>
+        <button type="button" className="p-1 text-hint hover:text-orange-400" title="스토리지"><HardDrive className="w-3 h-3" /></button>
       </div>
     ),
   },
@@ -418,7 +419,7 @@ export function DataHub() {
       </div>
 
       {/* 탭 */}
-      <div className="flex gap-1">
+      <TabBar variant="pill">
         {[
           { key: 'signal' as Tab, icon: Activity, label: '선박신호 수신 현황' },
           { key: 'monitor' as Tab, icon: Server, label: '선박위치정보 모니터링' },
@@ -426,18 +427,17 @@ export function DataHub() {
           { key: 'load' as Tab, icon: HardDrive, label: '적재 작업 관리' },
           { key: 'agents' as Tab, icon: Network, label: '연계서버 모니터링' },
         ].map((t) => (
-          <button
+          <TabButton
             key={t.key}
+            variant="pill"
+            active={tab === t.key}
             onClick={() => setTab(t.key)}
-            className={`flex items-center gap-1.5 px-4 py-2 rounded-lg text-xs transition-colors ${
-              tab === t.key ? 'bg-cyan-600 text-on-vivid' : 'text-muted-foreground hover:bg-secondary hover:text-foreground'
-            }`}
+            icon={<t.icon className="w-3.5 h-3.5" />}
           >
-            <t.icon className="w-3.5 h-3.5" />
             {t.label}
-          </button>
+          </TabButton>
         ))}
-      </div>
+      </TabBar>
 
       {/* ── ① 선박신호 수신 현황 ── */}
       {tab === 'signal' && (
@@ -455,10 +455,9 @@ export function DataHub() {
                     className="bg-surface-overlay border border-slate-700/50 rounded-lg px-3 py-1.5 text-[11px] text-heading focus:outline-none focus:border-cyan-500/50"
                   />
                 </div>
-                <button className="flex items-center gap-1 px-3 py-1.5 bg-surface-overlay border border-slate-700/50 rounded-lg text-[10px] text-muted-foreground hover:text-heading transition-colors">
-                  <RefreshCw className="w-3 h-3" />
+                <Button variant="secondary" size="sm" icon={<RefreshCw className="w-3 h-3" />}>
                   새로고침
-                </button>
+                </Button>
               </div>
             </div>
 
@@ -527,17 +526,15 @@ export function DataHub() {
             {/* 상태 필터 */}
             <div className="ml-auto flex items-center gap-1">
               {(['', 'ON', 'OFF'] as const).map((f) => (
-                <button
+                <TabButton
                   key={f}
+                  variant="pill"
+                  active={statusFilter === f}
                   onClick={() => setStatusFilter(f)}
-                  className={`px-2.5 py-1 rounded text-[10px] transition-colors ${
-                    statusFilter === f
-                      ? 'bg-cyan-600 text-on-vivid font-bold'
-                      : 'text-hint hover:bg-surface-overlay hover:text-label'
-                  }`}
+                  className="px-2.5 py-1 text-[10px]"
                 >
                   {f || '전체'}
-                </button>
+                </TabButton>
               ))}
             </div>
           </div>
@@ -560,19 +557,21 @@ export function DataHub() {
           <div className="flex items-center gap-3 px-4 py-2 rounded-xl border border-border bg-card">
             <span className="text-[10px] text-hint">서버 타입:</span>
             {(['', 'SQL', 'FILE', 'FTP'] as const).map((f) => (
-              <button key={f} onClick={() => setCollectTypeFilter(f)}
-                className={`px-2.5 py-1 rounded text-[10px] transition-colors ${collectTypeFilter === f ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}
-              >{f || '전체'}</button>
+              <TabButton key={f} variant="pill" active={collectTypeFilter === f} onClick={() => setCollectTypeFilter(f)} className="px-2.5 py-1 text-[10px]">
+                {f || '전체'}
+              </TabButton>
             ))}
             <span className="text-[10px] text-hint ml-3">상태:</span>
             {(['', '수행중', '대기중', '장애발생', '정지'] as const).map((f) => (
-              <button key={f} onClick={() => setCollectStatusFilter(f)}
-                className={`px-2.5 py-1 rounded text-[10px] transition-colors ${collectStatusFilter === f ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}
-              >{f || '전체'}</button>
+              <TabButton key={f} variant="pill" active={collectStatusFilter === f} onClick={() => setCollectStatusFilter(f)} className="px-2.5 py-1 text-[10px]">
+                {f || '전체'}
+              </TabButton>
             ))}
-            <button className="ml-auto flex items-center gap-1 px-3 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg transition-colors">
-              <Plus className="w-3 h-3" />작업 등록
-            </button>
+            <div className="ml-auto">
+              <Button variant="primary" size="sm" icon={<Plus className="w-3 h-3" />}>
+                작업 등록
+              </Button>
+            </div>
           </div>
           <DataTable data={filteredCollectJobs} columns={collectColumns} pageSize={10}
             searchPlaceholder="작업명, 서버명, IP 검색..." searchKeys={['name', 'serverName', 'serverIp']} exportFilename="수집작업목록" />
@@ -585,17 +584,17 @@ export function DataHub() {
           <div className="flex items-center gap-3 px-4 py-2 rounded-xl border border-border bg-card">
             <span className="text-[10px] text-hint">상태:</span>
             {(['', '수행중', '대기중', '장애발생', '정지'] as const).map((f) => (
-              <button key={f} onClick={() => setLoadStatusFilter(f)}
-                className={`px-2.5 py-1 rounded text-[10px] transition-colors ${loadStatusFilter === f ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}
-              >{f || '전체'}</button>
+              <TabButton key={f} variant="pill" active={loadStatusFilter === f} onClick={() => setLoadStatusFilter(f)} className="px-2.5 py-1 text-[10px]">
+                {f || '전체'}
+              </TabButton>
             ))}
             <div className="ml-auto flex items-center gap-2">
-              <button className="flex items-center gap-1 px-3 py-1.5 bg-surface-overlay border border-border rounded-lg text-[10px] text-muted-foreground hover:text-heading transition-colors">
-                <FolderOpen className="w-3 h-3" />스토리지 관리
-              </button>
-              <button className="flex items-center gap-1 px-3 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg transition-colors">
-                <Plus className="w-3 h-3" />작업 등록
-              </button>
+              <Button variant="secondary" size="sm" icon={<FolderOpen className="w-3 h-3" />}>
+                스토리지 관리
+              </Button>
+              <Button variant="primary" size="sm" icon={<Plus className="w-3 h-3" />}>
+                작업 등록
+              </Button>
             </div>
           </div>
           <DataTable data={filteredLoadJobs} columns={loadColumns} pageSize={10}
@@ -609,19 +608,21 @@ export function DataHub() {
           <div className="flex items-center gap-3 px-4 py-2 rounded-xl border border-border bg-card">
             <span className="text-[10px] text-hint">종류:</span>
             {(['', '수집', '적재'] as const).map((f) => (
-              <button key={f} onClick={() => setAgentRoleFilter(f)}
-                className={`px-2.5 py-1 rounded text-[10px] transition-colors ${agentRoleFilter === f ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}
-              >{f || '전체'}</button>
+              <TabButton key={f} variant="pill" active={agentRoleFilter === f} onClick={() => setAgentRoleFilter(f)} className="px-2.5 py-1 text-[10px]">
+                {f || '전체'}
+              </TabButton>
             ))}
             <span className="text-[10px] text-hint ml-3">상태:</span>
             {(['', '수행중', '대기중', '장애발생', '정지'] as const).map((f) => (
-              <button key={f} onClick={() => setAgentStatusFilter(f)}
-                className={`px-2.5 py-1 rounded text-[10px] transition-colors ${agentStatusFilter === f ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}
-              >{f || '전체'}</button>
+              <TabButton key={f} variant="pill" active={agentStatusFilter === f} onClick={() => setAgentStatusFilter(f)} className="px-2.5 py-1 text-[10px]">
+                {f || '전체'}
+              </TabButton>
             ))}
-            <button className="ml-auto flex items-center gap-1 px-3 py-1.5 bg-surface-overlay border border-border rounded-lg text-[10px] text-muted-foreground hover:text-heading transition-colors">
-              <RefreshCw className="w-3 h-3" />새로고침
-            </button>
+            <div className="ml-auto">
+              <Button variant="secondary" size="sm" icon={<RefreshCw className="w-3 h-3" />}>
+                새로고침
+              </Button>
+            </div>
           </div>
 
           {/* 연계서버 카드 그리드 */}
@@ -651,9 +652,9 @@ export function DataHub() {
                     <div className="flex items-center justify-between mt-3 pt-2 border-t border-border">
                       <span className="text-[9px] text-hint">작업 {agent.taskCount}건 · heartbeat {agent.lastHeartbeat.slice(11)}</span>
                       <div className="flex gap-0.5">
-                        <button className="p-1 text-hint hover:text-blue-400" title="상태 상세"><Eye className="w-3 h-3" /></button>
-                        <button className="p-1 text-hint hover:text-yellow-400" title="이름 변경"><Edit2 className="w-3 h-3" /></button>
-                        <button className="p-1 text-hint hover:text-red-400" title="삭제"><Trash2 className="w-3 h-3" /></button>
+                        <button type="button" className="p-1 text-hint hover:text-blue-400" title="상태 상세"><Eye className="w-3 h-3" /></button>
+                        <button type="button" className="p-1 text-hint hover:text-yellow-400" title="이름 변경"><Edit2 className="w-3 h-3" /></button>
+                        <button type="button" className="p-1 text-hint hover:text-red-400" title="삭제"><Trash2 className="w-3 h-3" /></button>
                       </div>
                     </div>
                   </CardContent>
diff --git a/frontend/src/features/admin/NoticeManagement.tsx b/frontend/src/features/admin/NoticeManagement.tsx
index 7608264..6888d59 100644
--- a/frontend/src/features/admin/NoticeManagement.tsx
+++ b/frontend/src/features/admin/NoticeManagement.tsx
@@ -237,10 +237,10 @@ export function NoticeManagement() {
                     </td>
                     <td className="px-1 py-1.5">
                       <div className="flex items-center justify-center gap-0.5">
-                        <button onClick={() => openEdit(n)} className="p-1 text-hint hover:text-blue-400" title="수정">
+                        <button type="button" onClick={() => openEdit(n)} className="p-1 text-hint hover:text-blue-400" title="수정">
                           <Edit2 className="w-3 h-3" />
                         </button>
-                        <button onClick={() => handleDelete(n.id)} className="p-1 text-hint hover:text-red-400" title="삭제">
+                        <button type="button" onClick={() => handleDelete(n.id)} className="p-1 text-hint hover:text-red-400" title="삭제">
                           <Trash2 className="w-3 h-3" />
                         </button>
                       </div>
@@ -261,7 +261,7 @@ export function NoticeManagement() {
               <span className="text-sm font-bold text-heading">
                 {editingId ? '알림 수정' : '새 알림 등록'}
               </span>
-              <button onClick={() => setShowForm(false)} className="text-hint hover:text-heading">
+              <button type="button" onClick={() => setShowForm(false)} className="text-hint hover:text-heading">
                 <X className="w-4 h-4" />
               </button>
             </div>
@@ -296,7 +296,7 @@ export function NoticeManagement() {
                   <label className="text-[10px] text-muted-foreground font-medium mb-1 block">알림 유형</label>
                   <div className="flex gap-1">
                     {TYPE_OPTIONS.map((opt) => (
-                      <button
+                      <button type="button"
                         key={opt.key}
                         onClick={() => setForm({ ...form, type: opt.key })}
                         className={`flex items-center gap-1 px-2.5 py-1.5 rounded-lg text-[10px] transition-colors ${
@@ -315,7 +315,7 @@ export function NoticeManagement() {
                   <label className="text-[10px] text-muted-foreground font-medium mb-1 block">표시 방식</label>
                   <div className="flex gap-1">
                     {DISPLAY_OPTIONS.map((opt) => (
-                      <button
+                      <button type="button"
                         key={opt.key}
                         onClick={() => setForm({ ...form, display: opt.key })}
                         className={`flex items-center gap-1 px-3 py-1.5 rounded-lg text-[10px] transition-colors ${
@@ -361,7 +361,7 @@ export function NoticeManagement() {
                 </label>
                 <div className="flex gap-1.5">
                   {ROLE_OPTIONS.map((role) => (
-                    <button
+                    <button type="button"
                       key={role}
                       onClick={() => toggleRole(role)}
                       className={`px-3 py-1.5 rounded-lg text-[10px] transition-colors ${
@@ -401,7 +401,7 @@ export function NoticeManagement() {
 
             {/* 하단 버튼 */}
             <div className="px-5 py-3 border-t border-border flex items-center justify-end gap-2">
-              <button
+              <button type="button"
                 onClick={() => setShowForm(false)}
                 className="px-4 py-1.5 text-[11px] text-muted-foreground hover:text-heading transition-colors"
               >
diff --git a/frontend/src/features/admin/PermissionsPanel.tsx b/frontend/src/features/admin/PermissionsPanel.tsx
index eb53ae0..d45f5e3 100644
--- a/frontend/src/features/admin/PermissionsPanel.tsx
+++ b/frontend/src/features/admin/PermissionsPanel.tsx
@@ -4,6 +4,7 @@ import {
 } from 'lucide-react';
 import { Card, CardContent } from '@shared/components/ui/card';
 import { Badge } from '@shared/components/ui/badge';
+import { Button } from '@shared/components/ui/button';
 import {
   fetchRoles, fetchPermTree, createRole, deleteRole, updateRolePermissions,
   type RoleWithPermissions, type PermTreeNode, type PermEntry,
@@ -381,10 +382,12 @@ export function PermissionsPanel() {
                          className="w-full bg-background border border-border rounded px-2 py-1 text-[10px] text-heading" />
                   <ColorPicker label="배지 색상" value={newRoleColor} onChange={setNewRoleColor} />
                   <div className="flex gap-1 pt-1">
-                    <button type="button" onClick={handleCreateRole} disabled={!newRoleCd || !newRoleNm}
-                            className="flex-1 py-1 bg-green-600 hover:bg-green-500 disabled:bg-green-600/40 text-white text-[10px] rounded">생성</button>
-                    <button type="button" onClick={() => setShowCreate(false)}
-                            className="flex-1 py-1 bg-gray-600 hover:bg-gray-500 text-white text-[10px] rounded">취소</button>
+                    <Button variant="primary" size="sm" onClick={handleCreateRole} disabled={!newRoleCd || !newRoleNm} className="flex-1">
+                      생성
+                    </Button>
+                    <Button variant="secondary" size="sm" onClick={() => setShowCreate(false)} className="flex-1">
+                      취소
+                    </Button>
                   </div>
                 </div>
               )}
@@ -464,11 +467,15 @@ export function PermissionsPanel() {
                   </div>
                 </div>
                 {canUpdatePerm && selectedRole && (
-                  <button type="button" onClick={handleSave} disabled={!isDirty || saving}
-                          className="px-3 py-1.5 bg-blue-600 hover:bg-blue-500 disabled:bg-blue-600/40 text-white text-xs rounded flex items-center gap-1">
-                    {saving ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Save className="w-3.5 h-3.5" />}
+                  <Button
+                    variant="primary"
+                    size="sm"
+                    onClick={handleSave}
+                    disabled={!isDirty || saving}
+                    icon={saving ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Save className="w-3.5 h-3.5" />}
+                  >
                     저장 {isDirty && <span className="text-yellow-300">●</span>}
-                  </button>
+                  </Button>
                 )}
               </div>
 
diff --git a/frontend/src/features/admin/SystemConfig.tsx b/frontend/src/features/admin/SystemConfig.tsx
index b97f823..d731be9 100644
--- a/frontend/src/features/admin/SystemConfig.tsx
+++ b/frontend/src/features/admin/SystemConfig.tsx
@@ -194,7 +194,7 @@ export function SystemConfig() {
       {/* 탭 */}
       <div className="flex gap-1">
         {TAB_ITEMS.map((t) => (
-          <button
+          <button type="button"
             key={t.key}
             onClick={() => changeTab(t.key)}
             className={`flex items-center gap-1.5 px-4 py-2 rounded-lg text-xs transition-colors ${
@@ -429,7 +429,7 @@ export function SystemConfig() {
       {/* 페이지네이션 (코드 탭에서만) */}
       {tab !== 'settings' && totalPages > 1 && (
         <div className="flex items-center justify-center gap-2">
-          <button
+          <button type="button"
             onClick={() => setPage(Math.max(0, page - 1))}
             disabled={page === 0}
             className="px-3 py-1.5 rounded-lg text-[11px] bg-surface-overlay border border-border text-muted-foreground hover:text-heading disabled:opacity-30 disabled:cursor-not-allowed transition-colors"
@@ -439,7 +439,7 @@ export function SystemConfig() {
           <span className="text-[11px] text-hint">
             {page + 1} / {totalPages} 페이지 ({totalItems.toLocaleString()}건)
           </span>
-          <button
+          <button type="button"
             onClick={() => setPage(Math.min(totalPages - 1, page + 1))}
             disabled={page >= totalPages - 1}
             className="px-3 py-1.5 rounded-lg text-[11px] bg-surface-overlay border border-border text-muted-foreground hover:text-heading disabled:opacity-30 disabled:cursor-not-allowed transition-colors"
diff --git a/frontend/src/features/ai-operations/AIAssistant.tsx b/frontend/src/features/ai-operations/AIAssistant.tsx
index 3358903..ca2817a 100644
--- a/frontend/src/features/ai-operations/AIAssistant.tsx
+++ b/frontend/src/features/ai-operations/AIAssistant.tsx
@@ -147,7 +147,7 @@ export function AIAssistant() {
               placeholder="질의를 입력하세요... (법령, 단속 절차, AI 분석 결과 등)"
               className="flex-1 bg-surface-overlay border border-slate-700/50 rounded-xl px-4 py-2.5 text-[11px] text-heading placeholder:text-hint focus:outline-none focus:border-green-500/50"
             />
-            <button onClick={handleSend} className="px-4 py-2.5 bg-green-600 hover:bg-green-500 text-on-vivid rounded-xl transition-colors">
+            <button type="button" onClick={handleSend} className="px-4 py-2.5 bg-green-600 hover:bg-green-500 text-on-vivid rounded-xl transition-colors">
               <Send className="w-4 h-4" />
             </button>
           </div>
diff --git a/frontend/src/features/ai-operations/AIModelManagement.tsx b/frontend/src/features/ai-operations/AIModelManagement.tsx
index e7b19df..898b61e 100644
--- a/frontend/src/features/ai-operations/AIModelManagement.tsx
+++ b/frontend/src/features/ai-operations/AIModelManagement.tsx
@@ -298,7 +298,7 @@ export function AIModelManagement() {
           { key: 'engines' as Tab, icon: Shield, label: '7대 탐지 엔진' },
           { key: 'api' as Tab, icon: Globe, label: '예측 결과 API' },
         ].map((t) => (
-          <button key={t.key} onClick={() => setTab(t.key)}
+          <button type="button" key={t.key} onClick={() => setTab(t.key)}
             className={`flex items-center gap-1.5 px-3 py-2 rounded-lg text-xs transition-colors ${tab === t.key ? 'bg-purple-600 text-on-vivid' : 'text-muted-foreground hover:bg-secondary hover:text-foreground'}`}>
             <t.icon className="w-3.5 h-3.5" />{t.label}
           </button>
@@ -317,7 +317,7 @@ export function AIModelManagement() {
                 <div className="text-[10px] text-muted-foreground">정확도 93.2% (+3.1%) · 오탐률 7.8% (-2.1%) · 다크베셀 탐지 강화</div>
               </div>
             </div>
-            <button className="bg-blue-600 hover:bg-blue-500 text-on-vivid text-[11px] font-bold px-4 py-2 rounded-lg transition-colors shrink-0">운영 배포</button>
+            <button type="button" className="bg-blue-600 hover:bg-blue-500 text-on-vivid text-[11px] font-bold px-4 py-2 rounded-lg transition-colors shrink-0">운영 배포</button>
           </div>
           <DataTable data={MODELS} columns={modelColumns} pageSize={10} searchPlaceholder="버전, 비고 검색..." searchKeys={['version', 'note']} exportFilename="AI모델_버전이력" />
         </div>
@@ -331,7 +331,7 @@ export function AIModelManagement() {
             {rules.map((rule, i) => (
               <Card key={i} className="bg-surface-raised border-border">
                 <CardContent className="p-3 flex items-center gap-4">
-                  <button onClick={() => toggleRule(i)}
+                  <button type="button" onClick={() => toggleRule(i)}
                     className={`w-10 h-5 rounded-full transition-colors relative shrink-0 ${rule.enabled ? 'bg-blue-600' : 'bg-switch-background'}`}>
                     <div className="w-4 h-4 bg-white rounded-full absolute top-0.5 transition-all shadow-sm" style={{ left: rule.enabled ? '22px' : '2px' }} />
                   </button>
@@ -880,7 +880,7 @@ export function AIModelManagement() {
                   <div>
                     <div className="flex items-center justify-between mb-1">
                       <span className="text-[10px] text-muted-foreground">격자별 위험도 조회 (파라미터: 좌표 범위, 시간)</span>
-                      <button onClick={() => navigator.clipboard.writeText('GET /api/v1/predictions/grid?lat_min=36.0&lat_max=38.0&lon_min=124.0&lon_max=126.0&time=2026-04-03T09:00Z')} className="text-hint hover:text-muted-foreground"><Copy className="w-3 h-3" /></button>
+                      <button type="button" onClick={() => navigator.clipboard.writeText('GET /api/v1/predictions/grid?lat_min=36.0&lat_max=38.0&lon_min=124.0&lon_max=126.0&time=2026-04-03T09:00Z')} className="text-hint hover:text-muted-foreground"><Copy className="w-3 h-3" /></button>
                     </div>
                     <pre className="bg-background border border-border rounded-lg p-3 text-[9px] font-mono text-muted-foreground overflow-x-auto">
 {`GET /api/v1/predictions/grid
diff --git a/frontend/src/features/ai-operations/MLOpsPage.tsx b/frontend/src/features/ai-operations/MLOpsPage.tsx
index e82fa1a..4b5819d 100644
--- a/frontend/src/features/ai-operations/MLOpsPage.tsx
+++ b/frontend/src/features/ai-operations/MLOpsPage.tsx
@@ -133,7 +133,7 @@ export function MLOpsPage() {
           { key: 'llmops' as Tab, icon: Brain, label: 'LLMOps' },
           { key: 'platform' as Tab, icon: Settings, label: '플랫폼 관리' },
         ]).map(t => (
-          <button key={t.key} onClick={() => setTab(t.key)}
+          <button type="button" key={t.key} onClick={() => setTab(t.key)}
             className={`flex items-center gap-1.5 px-4 py-2.5 text-[11px] font-medium border-b-2 transition-colors ${tab === t.key ? 'text-blue-400 border-blue-400' : 'text-hint border-transparent hover:text-label'}`}>
             <t.icon className="w-3.5 h-3.5" />{t.label}
           </button>
@@ -197,7 +197,7 @@ export function MLOpsPage() {
           <Card><CardContent className="p-4">
             <div className="flex items-center justify-between mb-3">
               <div className="text-[12px] font-bold text-heading">실험 목록</div>
-              <button className="flex items-center gap-1 px-3 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg"><Play className="w-3 h-3" />새 실험</button>
+              <button type="button" className="flex items-center gap-1 px-3 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg"><Play className="w-3 h-3" />새 실험</button>
             </div>
             <div className="space-y-2">
               {EXPERIMENTS.map(e => (
@@ -288,7 +288,7 @@ export function MLOpsPage() {
                 {MODELS.filter(m => m.status === 'APPROVED').map(m => (
                   <div key={m.name} className="flex items-center gap-3 px-3 py-2 bg-surface-overlay rounded-lg">
                     <span className="text-[11px] text-heading font-medium flex-1">{m.name} {m.ver}</span>
-                    <button className="flex items-center gap-1 px-2.5 py-1 bg-green-600 hover:bg-green-500 text-on-vivid text-[9px] font-bold rounded"><Rocket className="w-3 h-3" />배포</button>
+                    <button type="button" className="flex items-center gap-1 px-2.5 py-1 bg-green-600 hover:bg-green-500 text-on-vivid text-[9px] font-bold rounded"><Rocket className="w-3 h-3" />배포</button>
                   </div>
                 ))}
               </div>
@@ -313,8 +313,8 @@ export function MLOpsPage() {
   "version": "v2.1.0"
 }`} />
             <div className="flex gap-2 mt-2">
-              <button className="flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg"><Zap className="w-3 h-3" />실행</button>
-              <button className="px-3 py-1.5 bg-surface-overlay border border-border rounded-lg text-[10px] text-muted-foreground">초기화</button>
+              <button type="button" className="flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg"><Zap className="w-3 h-3" />실행</button>
+              <button type="button" className="px-3 py-1.5 bg-surface-overlay border border-border rounded-lg text-[10px] text-muted-foreground">초기화</button>
             </div>
           </CardContent></Card>
           <Card className="bg-surface-raised border-border flex flex-col"><CardContent className="p-4 flex-1 flex flex-col">
@@ -352,7 +352,7 @@ export function MLOpsPage() {
               { key: 'worker' as LLMSubTab, label: '배포 워커' },
               { key: 'llmtest' as LLMSubTab, label: 'LLM 테스트' },
             ]).map(t => (
-              <button key={t.key} onClick={() => setLlmSub(t.key)}
+              <button type="button" key={t.key} onClick={() => setLlmSub(t.key)}
                 className={`px-4 py-2 text-[11px] font-medium border-b-2 ${llmSub === t.key ? 'text-blue-400 border-blue-400' : 'text-hint border-transparent hover:text-label'}`}>{t.label}</button>
             ))}
           </div>
@@ -381,7 +381,7 @@ export function MLOpsPage() {
                       <div key={k} className="flex flex-col gap-1"><span className="text-[9px] text-hint">{k}</span><div className="bg-background border border-border rounded px-2.5 py-1.5 text-label">{v}</div></div>
                     ))}
                   </div>
-                  <button className="mt-3 flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg w-full justify-center"><Play className="w-3 h-3" />학습 시작</button>
+                  <button type="button" className="mt-3 flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg w-full justify-center"><Play className="w-3 h-3" />학습 시작</button>
                 </CardContent></Card>
               </div>
               <Card><CardContent className="p-4">
@@ -417,7 +417,7 @@ export function MLOpsPage() {
                     <div key={k} className="flex justify-between px-2 py-1 bg-surface-overlay rounded"><span className="text-hint font-mono">{k}</span><span className="text-label">{v}</span></div>
                   ))}
                 </div>
-                <button className="mt-3 flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg w-full justify-center"><Search className="w-3 h-3" />검색 시작</button>
+                <button type="button" className="mt-3 flex items-center gap-1 px-4 py-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-[10px] font-bold rounded-lg w-full justify-center"><Search className="w-3 h-3" />검색 시작</button>
               </CardContent></Card>
               <Card className="col-span-2 bg-surface-raised border-border"><CardContent className="p-4">
                 <div className="flex justify-between mb-3"><div className="text-[12px] font-bold text-heading">HPS 시도 결과</div><span className="text-[10px] text-green-400 font-bold">Best: Trial #3 (F1=0.912)</span></div>
@@ -505,7 +505,7 @@ export function MLOpsPage() {
                 </div>
                 <div className="flex gap-2 shrink-0">
                   <input className="flex-1 bg-background border border-border rounded-xl px-4 py-2 text-[11px] text-heading placeholder:text-hint focus:outline-none focus:border-blue-500/40" placeholder="질의를 입력하세요..." />
-                  <button className="px-4 py-2 bg-blue-600 hover:bg-blue-500 text-on-vivid rounded-xl"><Send className="w-4 h-4" /></button>
+                  <button type="button" className="px-4 py-2 bg-blue-600 hover:bg-blue-500 text-on-vivid rounded-xl"><Send className="w-4 h-4" /></button>
                 </div>
               </CardContent></Card>
             </div>
diff --git a/frontend/src/features/detection/ChinaFishing.tsx b/frontend/src/features/detection/ChinaFishing.tsx
index fcd62dd..4bba840 100644
--- a/frontend/src/features/detection/ChinaFishing.tsx
+++ b/frontend/src/features/detection/ChinaFishing.tsx
@@ -292,7 +292,7 @@ export function ChinaFishing() {
       {/* ── 모드 탭 (AI 대시보드 / 환적 탐지) ── */}
       <div className="flex items-center gap-1 bg-surface-raised rounded-lg p-1 border border-slate-700/30 w-fit">
         {modeTabs.map((tab) => (
-          <button
+          <button type="button"
             key={tab.key}
             onClick={() => setMode(tab.key)}
             className={`flex items-center gap-1.5 px-4 py-2 rounded-md text-[11px] font-medium transition-colors ${
@@ -470,7 +470,7 @@ export function ChinaFishing() {
               {/* 탭 헤더 */}
               <div className="flex border-b border-slate-700/30">
                 {vesselTabs.map((tab) => (
-                  <button
+                  <button type="button"
                     key={tab}
                     onClick={() => setVesselTab(tab)}
                     className={`flex-1 py-2.5 text-[11px] font-medium transition-colors ${
@@ -527,7 +527,7 @@ export function ChinaFishing() {
               {/* 탭 */}
               <div className="flex border-b border-slate-700/30">
                 {statsTabs.map((tab) => (
-                  <button
+                  <button type="button"
                     key={tab}
                     onClick={() => setStatsTab(tab)}
                     className={`flex-1 py-2.5 text-[11px] font-medium transition-colors ${
@@ -599,7 +599,7 @@ export function ChinaFishing() {
               <CardContent className="p-3">
                 <div className="flex items-center justify-between mb-2">
                   <span className="text-[11px] font-bold text-heading">최근 위성영상 분석</span>
-                  <button className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
+                  <button type="button" className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
                 </div>
                 <div className="space-y-1.5 text-[10px]">
                   <div className="flex gap-2">
@@ -623,7 +623,7 @@ export function ChinaFishing() {
               <CardContent className="p-3">
                 <div className="flex items-center justify-between mb-2">
                   <span className="text-[11px] font-bold text-heading">기상 예보</span>
-                  <button className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
+                  <button type="button" className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
                 </div>
                 <div className="flex items-center gap-3">
                   <div className="text-center">
@@ -646,7 +646,7 @@ export function ChinaFishing() {
               <CardContent className="p-3">
                 <div className="flex items-center justify-between mb-2">
                   <span className="text-[11px] font-bold text-heading">VTS연계 현황</span>
-                  <button className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
+                  <button type="button" className="text-[9px] text-blue-400 hover:underline">자세히 보기</button>
                 </div>
                 <div className="grid grid-cols-2 gap-1.5">
                   {VTS_ITEMS.map((vts) => (
@@ -664,10 +664,10 @@ export function ChinaFishing() {
                   ))}
                 </div>
                 <div className="flex justify-between mt-2">
-                  <button className="text-hint hover:text-heading transition-colors">
+                  <button type="button" className="text-hint hover:text-heading transition-colors">
                     <ChevronLeft className="w-4 h-4" />
                   </button>
-                  <button className="text-hint hover:text-heading transition-colors">
+                  <button type="button" className="text-hint hover:text-heading transition-colors">
                     <ChevronRight className="w-4 h-4" />
                   </button>
                 </div>
diff --git a/frontend/src/features/detection/DarkVesselDetection.tsx b/frontend/src/features/detection/DarkVesselDetection.tsx
index 445cc39..ccd8568 100644
--- a/frontend/src/features/detection/DarkVesselDetection.tsx
+++ b/frontend/src/features/detection/DarkVesselDetection.tsx
@@ -84,7 +84,7 @@ export function DarkVesselDetection() {
     { key: 'status', label: '상태', width: '70px', align: 'center', sortable: true,
       render: v => <Badge intent={getVesselSurveillanceIntent(v as string)} size="sm">{getVesselSurveillanceLabel(v as string, tc, lang)}</Badge> },
     { key: 'label', label: '라벨', width: '60px', align: 'center',
-      render: v => { const l = v as string; return l === '-' ? <button className="text-[9px] text-hint hover:text-blue-400"><Tag className="w-3 h-3 inline" /> 분류</button> : <Badge intent={l === '불법' ? 'critical' : 'success'} size="xs">{l}</Badge>; } },
+      render: v => { const l = v as string; return l === '-' ? <button type="button" className="text-[9px] text-hint hover:text-blue-400"><Tag className="w-3 h-3 inline" /> 분류</button> : <Badge intent={l === '불법' ? 'critical' : 'success'} size="xs">{l}</Badge>; } },
   ], [tc, lang]);
 
   const [darkItems, setDarkItems] = useState<VesselAnalysisItem[]>([]);
diff --git a/frontend/src/features/detection/GearIdentification.tsx b/frontend/src/features/detection/GearIdentification.tsx
index 9900a4f..a606bb4 100644
--- a/frontend/src/features/detection/GearIdentification.tsx
+++ b/frontend/src/features/detection/GearIdentification.tsx
@@ -648,7 +648,7 @@ export function GearIdentification() {
           </p>
         </div>
         <div className="flex items-center gap-2">
-          <button
+          <button type="button"
             onClick={() => setShowReference(!showReference)}
             className="px-3 py-1.5 bg-secondary border border-slate-700/50 rounded-md text-[11px] text-label hover:bg-switch-background transition-colors flex items-center gap-1.5"
           >
@@ -779,14 +779,14 @@ export function GearIdentification() {
 
           {/* 판별 버튼 */}
           <div className="flex gap-2">
-            <button
+            <button type="button"
               onClick={runIdentification}
               className="flex-1 py-2.5 bg-blue-600 hover:bg-blue-500 text-on-vivid text-sm font-bold rounded-lg transition-colors flex items-center justify-center gap-2"
             >
               <Zap className="w-4 h-4" />
               어구 국적 판별 실행
             </button>
-            <button
+            <button type="button"
               onClick={resetForm}
               className="px-4 py-2.5 bg-secondary hover:bg-switch-background text-label text-sm rounded-lg transition-colors border border-slate-700/50"
             >
diff --git a/frontend/src/features/risk-assessment/RiskMap.tsx b/frontend/src/features/risk-assessment/RiskMap.tsx
index 1c57d6d..082deb4 100644
--- a/frontend/src/features/risk-assessment/RiskMap.tsx
+++ b/frontend/src/features/risk-assessment/RiskMap.tsx
@@ -206,7 +206,7 @@ export function RiskMap() {
           { key: 'timeStat' as Tab, icon: Clock, label: '시간적 특성별' },
           { key: 'accRate' as Tab, icon: BarChart3, label: '사고율' },
         ]).map(t => (
-          <button key={t.key} onClick={() => setTab(t.key)}
+          <button type="button" key={t.key} onClick={() => setTab(t.key)}
             className={`flex items-center gap-1.5 px-4 py-2 text-[11px] font-medium border-b-2 ${tab === t.key ? 'text-red-400 border-red-400' : 'text-hint border-transparent hover:text-label'}`}>
             <t.icon className="w-3.5 h-3.5" />{t.label}
           </button>
diff --git a/frontend/src/features/statistics/ReportManagement.tsx b/frontend/src/features/statistics/ReportManagement.tsx
index b1ea820..9afd932 100644
--- a/frontend/src/features/statistics/ReportManagement.tsx
+++ b/frontend/src/features/statistics/ReportManagement.tsx
@@ -81,7 +81,7 @@ export function ReportManagement() {
         <div className="rounded-xl border border-border bg-card p-4">
           <div className="flex items-center justify-between mb-2">
             <span className="text-[11px] text-label font-bold">증거 파일 업로드 (사진·영상·문서)</span>
-            <button onClick={() => setShowUpload(false)} className="text-hint hover:text-muted-foreground"><X className="w-4 h-4" /></button>
+            <button type="button" onClick={() => setShowUpload(false)} className="text-hint hover:text-muted-foreground"><X className="w-4 h-4" /></button>
           </div>
           <FileUpload accept=".jpg,.jpeg,.png,.mp4,.pdf,.hwp,.docx" multiple maxSizeMB={100} />
           <div className="flex justify-end mt-3">
@@ -120,8 +120,8 @@ export function ReportManagement() {
                   </div>
                   <div className="text-[11px] text-hint mt-1">증거 {r.evidence}건</div>
                   <div className="flex gap-2 mt-2">
-                    <button className="bg-blue-600 text-on-vivid text-[11px] px-3 py-1 rounded hover:bg-blue-500 transition-colors">PDF</button>
-                    <button className="bg-muted text-heading text-[11px] px-3 py-1 rounded hover:bg-muted transition-colors">한글</button>
+                    <button type="button" className="bg-blue-600 text-on-vivid text-[11px] px-3 py-1 rounded hover:bg-blue-500 transition-colors">PDF</button>
+                    <button type="button" className="bg-muted text-heading text-[11px] px-3 py-1 rounded hover:bg-muted transition-colors">한글</button>
                   </div>
                 </div>
               ))}
@@ -135,7 +135,7 @@ export function ReportManagement() {
             <CardContent className="p-5">
               <div className="flex items-center justify-between mb-4">
                 <div className="text-sm text-label">보고서 미리보기</div>
-                <button className="flex items-center gap-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid px-3 py-1.5 rounded-lg text-xs transition-colors">
+                <button type="button" className="flex items-center gap-1.5 bg-blue-600 hover:bg-blue-500 text-on-vivid px-3 py-1.5 rounded-lg text-xs transition-colors">
                   <Download className="w-3.5 h-3.5" />다운로드
                 </button>
               </div>
diff --git a/frontend/src/features/surveillance/LiveMapView.tsx b/frontend/src/features/surveillance/LiveMapView.tsx
index 27a71cf..9b81840 100644
--- a/frontend/src/features/surveillance/LiveMapView.tsx
+++ b/frontend/src/features/surveillance/LiveMapView.tsx
@@ -289,7 +289,7 @@ export function LiveMapView() {
 
         {/* 지도 영역 */}
         <div className="flex-1 relative rounded-xl overflow-hidden">
-          <BaseMap ref={mapRef} center={[36.8, 125.3]} zoom={8} height="100%" style={{ minHeight: 400 }} onClick={handleMapClick} onMapReady={handleMapReady} />
+          <BaseMap ref={mapRef} center={[36.8, 125.3]} zoom={8} height="100%" className="min-h-[400px]" onClick={handleMapClick} onMapReady={handleMapReady} />
           {/* 범례 */}
           <div className="absolute bottom-3 left-3 z-[1000] bg-background/90 backdrop-blur-sm border border-border rounded-lg px-3 py-2">
             <div className="text-[9px] text-muted-foreground font-bold mb-1">선박 범례</div>
diff --git a/frontend/src/features/surveillance/MapControl.tsx b/frontend/src/features/surveillance/MapControl.tsx
index 90d07e9..60a0657 100644
--- a/frontend/src/features/surveillance/MapControl.tsx
+++ b/frontend/src/features/surveillance/MapControl.tsx
@@ -300,7 +300,7 @@ export function MapControl() {
             { key: 'kcg' as Tab, label: '해경', icon: Anchor },
             { key: 'ntm' as Tab, label: '항행통보', icon: Bell },
           ]).map(t => (
-            <button key={t.key} onClick={() => setTab(t.key)}
+            <button type="button" key={t.key} onClick={() => setTab(t.key)}
               className={`flex items-center gap-1.5 px-4 py-2 text-[11px] font-medium border-b-2 ${tab === t.key ? 'text-cyan-400 border-cyan-400' : 'text-hint border-transparent hover:text-label'}`}>
               <t.icon className="w-3.5 h-3.5" />{t.label}
             </button>
@@ -309,7 +309,7 @@ export function MapControl() {
         <div className="flex items-center gap-1.5 ml-auto">
           <Filter className="w-3.5 h-3.5 text-hint" />
           {['', '서해', '남해', '동해', '제주'].map(s => (
-            <button key={s} onClick={() => setSeaFilter(s)}
+            <button type="button" key={s} onClick={() => setSeaFilter(s)}
               className={`px-2.5 py-1 rounded text-[10px] ${seaFilter === s ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}>
               {s || '전체'}
             </button>
@@ -340,7 +340,7 @@ export function MapControl() {
             <Filter className="w-3.5 h-3.5 text-hint" />
             <span className="text-[10px] text-hint">구분:</span>
             {NTM_CATEGORIES.map(c => (
-              <button key={c} onClick={() => setNtmCatFilter(c === '전체' ? '' : c)}
+              <button type="button" key={c} onClick={() => setNtmCatFilter(c === '전체' ? '' : c)}
                 className={`px-2.5 py-1 rounded text-[10px] ${(c === '전체' && !ntmCatFilter) || ntmCatFilter === c ? 'bg-cyan-600 text-on-vivid font-bold' : 'text-hint hover:bg-surface-overlay'}`}>{c}</button>
             ))}
           </div>
diff --git a/frontend/src/features/vessel/VesselDetail.tsx b/frontend/src/features/vessel/VesselDetail.tsx
index b6930bc..1e65326 100644
--- a/frontend/src/features/vessel/VesselDetail.tsx
+++ b/frontend/src/features/vessel/VesselDetail.tsx
@@ -180,7 +180,7 @@ export function VesselDetail() {
             <input value={searchMmsi} onChange={(e) => setSearchMmsi(e.target.value)}
               placeholder="MMSI 입력"
               className="flex-1 bg-surface-overlay border border-slate-700/50 rounded px-2 py-1 text-[10px] text-label focus:outline-none" />
-            <button className="flex items-center gap-1.5 bg-secondary border border-slate-700/50 rounded px-3 py-1 text-[10px] text-label hover:bg-switch-background transition-colors">
+            <button type="button" className="flex items-center gap-1.5 bg-secondary border border-slate-700/50 rounded px-3 py-1 text-[10px] text-label hover:bg-switch-background transition-colors">
               검색 <Search className="w-3 h-3" />
             </button>
           </div>
@@ -414,19 +414,19 @@ export function VesselDetail() {
       {/* ── 우측 도구바 ── */}
       <div className="w-10 bg-background border-l border-border flex flex-col items-center py-2 gap-0.5 shrink-0">
         {RIGHT_TOOLS.map((t) => (
-          <button key={t.label} className="flex flex-col items-center gap-0.5 py-1.5 px-1 rounded hover:bg-surface-overlay text-hint hover:text-label transition-colors" title={t.label}>
+          <button type="button" key={t.label} className="flex flex-col items-center gap-0.5 py-1.5 px-1 rounded hover:bg-surface-overlay text-hint hover:text-label transition-colors" title={t.label}>
             <t.icon className="w-3.5 h-3.5" /><span className="text-[6px]">{t.label}</span>
           </button>
         ))}
         <div className="flex-1" />
         <div className="flex flex-col border border-border rounded-lg overflow-hidden">
-          <button className="p-1 hover:bg-secondary text-hint hover:text-heading text-sm font-bold">+</button>
+          <button type="button" className="p-1 hover:bg-secondary text-hint hover:text-heading text-sm font-bold">+</button>
           <div className="h-px bg-white/[0.06]" />
-          <button className="p-1 hover:bg-secondary text-hint hover:text-heading text-sm font-bold">-</button>
+          <button type="button" className="p-1 hover:bg-secondary text-hint hover:text-heading text-sm font-bold">-</button>
         </div>
-        <button className="mt-1 flex flex-col items-center py-1 text-hint hover:text-label"><LayoutGrid className="w-3.5 h-3.5" /><span className="text-[6px]">범례</span></button>
-        <button className="flex flex-col items-center py-1 text-hint hover:text-label"><div className="w-3.5 h-3.5 border border-slate-500 rounded-sm" /><span className="text-[6px]">미니맵</span></button>
-        <button className="flex flex-col items-center py-1 bg-blue-600/20 text-blue-400 rounded"><Radar className="w-3.5 h-3.5" /><span className="text-[6px]">AI모드</span></button>
+        <button type="button" className="mt-1 flex flex-col items-center py-1 text-hint hover:text-label"><LayoutGrid className="w-3.5 h-3.5" /><span className="text-[6px]">범례</span></button>
+        <button type="button" className="flex flex-col items-center py-1 text-hint hover:text-label"><div className="w-3.5 h-3.5 border border-slate-500 rounded-sm" /><span className="text-[6px]">미니맵</span></button>
+        <button type="button" className="flex flex-col items-center py-1 bg-blue-600/20 text-blue-400 rounded"><Radar className="w-3.5 h-3.5" /><span className="text-[6px]">AI모드</span></button>
       </div>
     </PageContainer>
   );
diff --git a/frontend/src/shared/components/ui/tabs.tsx b/frontend/src/shared/components/ui/tabs.tsx
new file mode 100644
index 0000000..f54c874
--- /dev/null
+++ b/frontend/src/shared/components/ui/tabs.tsx
@@ -0,0 +1,78 @@
+import { type ButtonHTMLAttributes, type ReactNode } from 'react';
+import { cn } from '@lib/utils/cn';
+
+/**
+ * TabBar — 탭 버튼 그룹 공통 컴포넌트
+ *
+ * 3가지 스타일:
+ * - 'underline' (기본): border-b 밑줄 탭 (MLOps, RiskMap 스타일)
+ * - 'pill': 라운드 pill 탭 (ChinaFishing 스타일)
+ * - 'segmented': 배경 그룹 segmented control 스타일
+ *
+ * 사용:
+ *   <TabBar>
+ *     <TabButton active={tab === 'a'} onClick={() => setTab('a')}>탭 A</TabButton>
+ *     <TabButton active={tab === 'b'} onClick={() => setTab('b')}>탭 B</TabButton>
+ *   </TabBar>
+ */
+
+export interface TabBarProps {
+  variant?: 'underline' | 'pill' | 'segmented';
+  children: ReactNode;
+  className?: string;
+}
+
+export function TabBar({ variant = 'underline', children, className }: TabBarProps) {
+  const variantClass = {
+    underline: 'flex gap-0 border-b border-border',
+    pill: 'flex items-center gap-1',
+    segmented: 'flex items-center gap-1 bg-surface-raised rounded-lg p-1 border border-border w-fit',
+  }[variant];
+  return <div className={cn(variantClass, className)}>{children}</div>;
+}
+
+export interface TabButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
+  active?: boolean;
+  variant?: 'underline' | 'pill' | 'segmented';
+  icon?: ReactNode;
+  children: ReactNode;
+}
+
+/**
+ * TabButton — 단일 탭 버튼. active 상태에 따라 스타일 변화.
+ */
+export function TabButton({
+  active = false,
+  variant = 'underline',
+  icon,
+  children,
+  className,
+  type = 'button',
+  ...props
+}: TabButtonProps) {
+  const variantClass = {
+    underline: cn(
+      'flex items-center gap-1.5 px-4 py-2 text-[11px] font-medium border-b-2 transition-colors',
+      active ? 'text-blue-400 border-blue-400' : 'text-hint border-transparent hover:text-label',
+    ),
+    pill: cn(
+      'flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-[11px] font-medium transition-colors',
+      active
+        ? 'bg-blue-600 text-on-vivid'
+        : 'text-muted-foreground hover:bg-secondary hover:text-foreground',
+    ),
+    segmented: cn(
+      'flex items-center gap-1.5 px-4 py-2 rounded-md text-[11px] font-medium transition-colors',
+      active
+        ? 'bg-blue-600 text-on-vivid'
+        : 'text-muted-foreground hover:text-foreground hover:bg-surface-overlay',
+    ),
+  }[variant];
+
+  return (
+    <button type={type} className={cn(variantClass, className)} {...props}>
+      {icon}
+      {children}
+    </button>
+  );
+}