diff --git a/frontend/src/assets/styles/relay.css b/frontend/src/assets/styles/relay.css
index 18605c6..7ddc9a7 100644
--- a/frontend/src/assets/styles/relay.css
+++ b/frontend/src/assets/styles/relay.css
@@ -569,6 +569,90 @@ body {
   color: var(--text-3);
 }
 
+/* ============================================================
+ * 폼 필드 (폼 모달 공통 — BaseModal 본문 등에서 사용)
+ * ============================================================ */
+.form-field {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+.form-label {
+  font-size: 0.781rem;
+  font-weight: 600;
+  color: var(--text-2);
+}
+.form-row {
+  display: flex;
+  gap: 0.75rem;
+}
+.form-row .form-field {
+  flex: 1;
+  min-width: 0;
+}
+.form-input {
+  width: 100%;
+  height: 2.5rem;
+  padding: 0 0.75rem;
+  border: 1px solid var(--border-strong);
+  border-radius: var(--radius);
+  font-family: inherit;
+  font-size: 0.844rem;
+  color: var(--text);
+  background: #fff;
+}
+.form-input::placeholder {
+  color: var(--text-3);
+}
+.form-input:focus {
+  outline: none;
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px var(--accent-weak);
+}
+.form-textarea {
+  height: auto;
+  min-height: 5.75rem;
+  padding: 0.625rem 0.75rem;
+  line-height: 1.5;
+  resize: vertical;
+}
+/* 네이티브 select 래퍼 + 셰브론 */
+.form-select-wrap {
+  position: relative;
+}
+.form-select {
+  -webkit-appearance: none;
+  appearance: none;
+  width: 100%;
+  height: 2.5rem;
+  padding: 0 2.125rem 0 0.75rem;
+  border: 1px solid var(--border-strong);
+  border-radius: var(--radius);
+  font-family: inherit;
+  font-size: 0.844rem;
+  color: var(--text);
+  background: #fff;
+  cursor: pointer;
+}
+.form-select:focus {
+  outline: none;
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px var(--accent-weak);
+}
+.form-select-chev {
+  position: absolute;
+  right: 0.625rem;
+  top: 50%;
+  transform: translateY(-50%);
+  display: grid;
+  color: var(--text-3);
+  pointer-events: none;
+}
+.form-select-chev svg {
+  width: 0.9375rem;
+  height: 0.9375rem;
+}
+
 /* ============================================================
  * 더보기 버튼 (목록 페이지네이션 공통)
  * ============================================================ */
@@ -593,3 +677,17 @@ body {
   opacity: 0.6;
   cursor: default;
 }
+
+/* ============================================================
+ * 빈/상태 메시지 박스 (목록 로딩·빈 상태 공통)
+ * ============================================================ */
+.empty-state {
+  background: var(--panel);
+  border: 1px solid var(--border);
+  border-radius: 0.625rem;
+  box-shadow: var(--shadow-sm);
+  padding: 2.5rem 1.25rem;
+  text-align: center;
+  font-size: 0.844rem;
+  color: var(--text-3);
+}
diff --git a/frontend/src/components/DropdownSelect.vue b/frontend/src/components/DropdownSelect.vue
index 06eead0..ad8f6a5 100644
--- a/frontend/src/components/DropdownSelect.vue
+++ b/frontend/src/components/DropdownSelect.vue
@@ -1,7 +1,8 @@
 <script setup lang="ts" generic="T extends string">
 // 커스텀 드롭다운(셀렉트) — 네이티브 select 대신 디자인 토큰에 맞춘 정렬/필터 공통 UI.
 // 메뉴는 body 로 Teleport + fixed 위치로 띄워, 스크롤/overflow 컨테이너 안에서도 잘리지 않는다.
-import { computed, nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
+import { computed } from 'vue'
+import { useDropdownMenu } from '@/composables/useDropdownMenu'
 
 interface Option {
   value: T
@@ -23,75 +24,25 @@ const props = withDefaults(
 )
 const emit = defineEmits<{ (e: 'update:modelValue', value: T): void }>()
 
-const open = ref(false)
-const root = ref<HTMLElement | null>(null)
-const triggerRef = ref<HTMLElement | null>(null)
-const menuRef = ref<HTMLElement | null>(null)
-// 메뉴 fixed 위치(트리거 기준 계산)
-const menuStyle = ref<Record<string, string>>({})
+// 메뉴 위치/토글/바깥클릭 닫기 — 공용 훅
+const { open, triggerRef, menuRef, menuStyle, toggle, close } = useDropdownMenu({
+  align: props.align,
+  matchWidth: true,
+})
 
 // 현재 선택된 옵션 라벨(트리거에 표시)
 const selectedLabel = computed(
   () => props.options.find((o) => o.value === props.modelValue)?.label ?? '',
 )
 
-// 트리거 위치 기준으로 메뉴 좌표 계산(뷰포트 fixed)
-function positionMenu(): void {
-  const el = triggerRef.value
-  if (!el) return
-  const r = el.getBoundingClientRect()
-  const style: Record<string, string> = {
-    top: `${r.bottom + 6}px`,
-    minWidth: `${r.width}px`,
-  }
-  if (props.align === 'right') {
-    style.right = `${Math.max(0, window.innerWidth - r.right)}px`
-  } else {
-    style.left = `${r.left}px`
-  }
-  menuStyle.value = style
-}
-
-function toggle(): void {
-  open.value = !open.value
-  if (open.value) void nextTick(positionMenu)
-}
 function select(value: T): void {
   emit('update:modelValue', value)
-  open.value = false
+  close()
 }
-
-// 바깥 클릭(트리거/메뉴 외부) / Esc 로 닫기
-function onDocClick(e: MouseEvent): void {
-  if (!open.value) return
-  const t = e.target as Node
-  if (root.value?.contains(t) || menuRef.value?.contains(t)) return
-  open.value = false
-}
-function onKeydown(e: KeyboardEvent): void {
-  if (open.value && e.key === 'Escape') open.value = false
-}
-// 스크롤/리사이즈 시 위치가 어긋나므로 닫는다(간단·안전)
-function onReposition(): void {
-  if (open.value) open.value = false
-}
-onMounted(() => {
-  document.addEventListener('click', onDocClick)
-  document.addEventListener('keydown', onKeydown)
-  window.addEventListener('scroll', onReposition, true)
-  window.addEventListener('resize', onReposition)
-})
-onBeforeUnmount(() => {
-  document.removeEventListener('click', onDocClick)
-  document.removeEventListener('keydown', onKeydown)
-  window.removeEventListener('scroll', onReposition, true)
-  window.removeEventListener('resize', onReposition)
-})
 </script>
 
 <template>
   <div
-    ref="root"
     class="dd"
     :class="{ push: pushRight, block }"
   >
diff --git a/frontend/src/components/StatusSelect.vue b/frontend/src/components/StatusSelect.vue
index 99e7311..e7324f6 100644
--- a/frontend/src/components/StatusSelect.vue
+++ b/frontend/src/components/StatusSelect.vue
@@ -1,60 +1,28 @@
 <script setup lang="ts">
 // 진행 상태(대기/진행 중/완료) 선택 드롭다운 — 상태색 테마. 메뉴는 body Teleport(스크롤 클리핑 방지).
-import { computed, nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
+import { computed } from 'vue'
+import { useDropdownMenu } from '@/composables/useDropdownMenu'
+import {
+  WORK_STATUS_META as META,
+  WORK_STATUS_ORDER as ORDER,
+} from '@/shared/constants/workStatus'
 import type { ChecklistWorkStatus } from '@/mock/relay.mock'
 
 const props = defineProps<{ modelValue: ChecklistWorkStatus }>()
 const emit = defineEmits<{ (e: 'update:modelValue', v: ChecklistWorkStatus): void }>()
 
-const META: Record<ChecklistWorkStatus, { label: string; color: string; weak: string }> = {
-  todo: { label: '대기', color: '#9298a3', weak: '#eef0f2' },
-  doing: { label: '진행 중', color: '#2563eb', weak: '#e9f0fd' },
-  done: { label: '완료', color: '#1f9d57', weak: '#e7f5ed' },
-}
-const ORDER: ChecklistWorkStatus[] = ['todo', 'doing', 'done']
 const cur = computed(() => META[props.modelValue])
 
-const open = ref(false)
-const triggerRef = ref<HTMLElement | null>(null)
-const menuRef = ref<HTMLElement | null>(null)
-const menuStyle = ref<Record<string, string>>({})
+// 메뉴 위치/토글/바깥클릭 닫기 — 공용 훅(우측 정렬, 너비는 CSS 고정)
+const { open, triggerRef, menuRef, menuStyle, toggle, close } = useDropdownMenu({
+  align: 'right',
+  gap: 5,
+})
 
-function positionMenu(): void {
-  const el = triggerRef.value
-  if (!el) return
-  const r = el.getBoundingClientRect()
-  menuStyle.value = {
-    top: `${r.bottom + 5}px`,
-    right: `${Math.max(0, window.innerWidth - r.right)}px`,
-  }
-}
-function toggle(): void {
-  open.value = !open.value
-  if (open.value) void nextTick(positionMenu)
-}
 function pick(v: ChecklistWorkStatus): void {
   emit('update:modelValue', v)
-  open.value = false
+  close()
 }
-function onDoc(e: MouseEvent): void {
-  if (!open.value) return
-  const t = e.target as Node
-  if (triggerRef.value?.contains(t) || menuRef.value?.contains(t)) return
-  open.value = false
-}
-function onReposition(): void {
-  if (open.value) open.value = false
-}
-onMounted(() => {
-  document.addEventListener('click', onDoc)
-  window.addEventListener('scroll', onReposition, true)
-  window.addEventListener('resize', onReposition)
-})
-onBeforeUnmount(() => {
-  document.removeEventListener('click', onDoc)
-  window.removeEventListener('scroll', onReposition, true)
-  window.removeEventListener('resize', onReposition)
-})
 </script>
 
 <template>
diff --git a/frontend/src/components/common/BaseModal.vue b/frontend/src/components/common/BaseModal.vue
new file mode 100644
index 0000000..d1a1046
--- /dev/null
+++ b/frontend/src/components/common/BaseModal.vue
@@ -0,0 +1,190 @@
+<script setup lang="ts">
+// 공용 폼 모달 셸 — backdrop + 헤더(제목/닫기) + 본문 슬롯 + 푸터 슬롯.
+// Teleport(body) · ESC · 바깥(backdrop) 클릭 닫기 내장.
+// 전역 .modal*(확인 다이얼로그 전용)과 충돌하지 않도록 bm- 접두 클래스를 쓴다.
+// 폼 필드는 전역 .form-* 클래스(relay.css)를 본문 슬롯에서 사용한다.
+import { onBeforeUnmount, onMounted } from 'vue'
+
+withDefaults(
+  defineProps<{
+    title: string
+    // 너비: md(기본 33.75rem) | sm(27.5rem)
+    size?: 'md' | 'sm'
+  }>(),
+  { size: 'md' },
+)
+const emit = defineEmits<{ (e: 'close'): void }>()
+
+function onKey(e: KeyboardEvent): void {
+  if (e.key === 'Escape') emit('close')
+}
+onMounted(() => document.addEventListener('keydown', onKey))
+onBeforeUnmount(() => document.removeEventListener('keydown', onKey))
+</script>
+
+<template>
+  <Teleport to="body">
+    <div
+      class="bm-back"
+      @mousedown.self="emit('close')"
+    >
+      <div
+        class="bm"
+        :class="{ 'bm-sm': size === 'sm' }"
+        role="dialog"
+        aria-modal="true"
+      >
+        <div class="bm-head">
+          <div class="bm-head-text">
+            <h3>{{ title }}</h3>
+            <div
+              v-if="$slots.subtitle"
+              class="bm-sub"
+            >
+              <slot name="subtitle" />
+            </div>
+          </div>
+          <button
+            type="button"
+            class="bm-x"
+            aria-label="닫기"
+            @click="emit('close')"
+          >
+            <svg
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              stroke-width="2.2"
+              stroke-linecap="round"
+            ><path d="M18 6 6 18M6 6l12 12" /></svg>
+          </button>
+        </div>
+        <div class="bm-body">
+          <slot />
+        </div>
+        <div
+          v-if="$slots.foot"
+          class="bm-foot"
+        >
+          <slot name="foot" />
+        </div>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<style scoped>
+.bm-back {
+  position: fixed;
+  inset: 0;
+  z-index: 100;
+  background: rgba(20, 24, 33, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 1.5rem;
+}
+.bm {
+  width: 100%;
+  max-width: 33.75rem;
+  max-height: 90vh;
+  overflow-y: auto;
+  background: #fff;
+  border-radius: 0.875rem;
+  box-shadow: 0 24px 64px rgba(20, 24, 33, 0.32);
+  display: flex;
+  flex-direction: column;
+}
+.bm.bm-sm {
+  max-width: 27.5rem;
+}
+.bm-head {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 0.75rem;
+  padding: 1.375rem 1.5rem 1rem;
+  position: sticky;
+  top: 0;
+  background: #fff;
+  border-radius: 0.875rem 0.875rem 0 0;
+  z-index: 1;
+}
+.bm-head h3 {
+  font-size: 1.0625rem;
+  font-weight: 700;
+  letter-spacing: -0.01875rem;
+}
+.bm-sub {
+  font-size: 0.8125rem;
+  color: var(--text-2);
+  margin-top: 0.25rem;
+}
+.bm-sub :deep(b) {
+  color: var(--text-2);
+  font-weight: 600;
+}
+.bm-x {
+  flex-shrink: 0;
+}
+.bm-x {
+  width: 2rem;
+  height: 2rem;
+  border: none;
+  background: transparent;
+  color: var(--text-3);
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+  display: grid;
+  place-items: center;
+  margin-right: -0.3125rem;
+}
+.bm-x:hover {
+  background: #f1f2f4;
+  color: var(--text);
+}
+.bm-x svg {
+  width: 1.125rem;
+  height: 1.125rem;
+}
+.bm-body {
+  padding: 0.5rem 1.5rem 0.75rem;
+  display: flex;
+  flex-direction: column;
+  gap: 1.125rem;
+  text-align: left;
+}
+.bm-foot {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.5625rem;
+  padding: 1rem 1.5rem;
+  border-top: 1px solid var(--border);
+  background: #fafbfc;
+  position: sticky;
+  bottom: 0;
+  border-radius: 0 0 0.875rem 0.875rem;
+}
+/* 푸터 버튼 — 전역 .mbtn(확인 다이얼로그용 flex:1) 대신 폼 모달용 우측정렬 컴팩트 */
+.bm-foot :deep(.mbtn) {
+  flex: 0 0 auto;
+  height: 2.375rem;
+  padding: 0 1rem;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.375rem;
+}
+.bm-foot :deep(.mbtn svg) {
+  width: 0.9375rem;
+  height: 0.9375rem;
+}
+.bm-foot :deep(.mbtn:disabled) {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+.bm-foot :deep(.mbtn.primary:disabled),
+.bm-foot :deep(.mbtn.primary:disabled:hover) {
+  background: var(--accent);
+  border-color: var(--accent);
+}
+</style>
diff --git a/frontend/src/components/common/EmptyState.vue b/frontend/src/components/common/EmptyState.vue
new file mode 100644
index 0000000..977db78
--- /dev/null
+++ b/frontend/src/components/common/EmptyState.vue
@@ -0,0 +1,10 @@
+<script setup lang="ts">
+// 빈/상태 메시지 박스 공용 컴포넌트 — 목록 로딩·빈 상태 등에 사용.
+// 전역 .empty-state 카드 스타일을 쓰고, 메시지는 기본 슬롯으로 전달한다.
+</script>
+
+<template>
+  <div class="empty-state">
+    <slot />
+  </div>
+</template>
diff --git a/frontend/src/components/common/LoadMore.vue b/frontend/src/components/common/LoadMore.vue
new file mode 100644
index 0000000..1e8b25f
--- /dev/null
+++ b/frontend/src/components/common/LoadMore.vue
@@ -0,0 +1,17 @@
+<script setup lang="ts">
+// 목록 페이지네이션 '더보기' 버튼 공용 컴포넌트 — 전역 .load-more 스타일 사용.
+// 부모는 보통 v-if="hasMore" 로 노출하고, @load 에서 다음 페이지를 불러온다.
+defineProps<{ loading?: boolean }>()
+const emit = defineEmits<{ (e: 'load'): void }>()
+</script>
+
+<template>
+  <button
+    class="load-more"
+    type="button"
+    :disabled="loading"
+    @click="emit('load')"
+  >
+    {{ loading ? '불러오는 중…' : '더보기' }}
+  </button>
+</template>
diff --git a/frontend/src/components/common/SegmentedTabs.vue b/frontend/src/components/common/SegmentedTabs.vue
new file mode 100644
index 0000000..d804d62
--- /dev/null
+++ b/frontend/src/components/common/SegmentedTabs.vue
@@ -0,0 +1,28 @@
+<script setup lang="ts" generic="T extends string">
+// 세그먼트 토글(필터/탭) 공용 컴포넌트 — 전역 .segmented 스타일을 그대로 사용.
+// options 의 count 가 있으면 라벨 뒤에 수량(.n)을 표기한다.
+interface SegOption {
+  value: T
+  label: string
+  count?: number
+}
+defineProps<{ modelValue: T; options: SegOption[] }>()
+const emit = defineEmits<{ (e: 'update:modelValue', value: T): void }>()
+</script>
+
+<template>
+  <div class="segmented">
+    <button
+      v-for="o in options"
+      :key="o.value"
+      type="button"
+      :class="{ active: o.value === modelValue }"
+      @click="emit('update:modelValue', o.value)"
+    >
+      {{ o.label }}<span
+        v-if="o.count !== undefined"
+        class="n"
+      >{{ o.count }}</span>
+    </button>
+  </div>
+</template>
diff --git a/frontend/src/components/schedule/ScheduleAvatar.vue b/frontend/src/components/schedule/ScheduleAvatar.vue
index eab686d..bb5ea62 100644
--- a/frontend/src/components/schedule/ScheduleAvatar.vue
+++ b/frontend/src/components/schedule/ScheduleAvatar.vue
@@ -1,9 +1,10 @@
 <script setup lang="ts">
-// 일정 참석자 아바타 — 사이트 공용 UserAvatar 와 동일한 방식.
-// 프로필 이미지가 있으면 사진, 없으면 사람 실루엣 placeholder(색상+이니셜 방식은 폐기).
-import { computed } from 'vue'
+// 일정 참석자 아바타 — 사이트 공용 UserAvatar 를 size(px)로 감싸는 얇은 어댑터.
+// 렌더링(이미지/실루엣)은 UserAvatar 가 단일 책임지고, 여기선 크기/원형 래퍼만 담당.
+// (.sa 클래스는 상세 패널 아바타 스택 CSS 의 훅으로 유지)
+import UserAvatar from '@/components/UserAvatar.vue'
 
-const props = withDefaults(
+withDefaults(
   defineProps<{
     name?: string
     avatarUrl?: string | null
@@ -11,52 +12,24 @@ const props = withDefaults(
   }>(),
   { name: '', avatarUrl: null, size: 21 },
 )
-
-const dim = computed(() => `${props.size}px`)
 </script>
 
 <template>
   <span
     class="sa"
-    :style="{ width: dim, height: dim }"
+    :style="{ width: `${size}px`, height: `${size}px` }"
   >
-    <img
-      v-if="avatarUrl"
-      class="sa-img"
-      :src="avatarUrl"
-      :alt="name || '프로필 이미지'"
-    >
-    <svg
-      v-else
-      class="sa-ph"
-      viewBox="0 0 24 24"
-      fill="currentColor"
-      aria-hidden="true"
-    >
-      <path d="M12 12.5a4.25 4.25 0 1 0 0-8.5 4.25 4.25 0 0 0 0 8.5Z" />
-      <path d="M4.5 19.25c0-3.04 3.36-5 7.5-5s7.5 1.96 7.5 5v.75H4.5v-.75Z" />
-    </svg>
+    <UserAvatar
+      :url="avatarUrl"
+      :name="name"
+    />
   </span>
 </template>
 
 <style scoped>
 .sa {
-  display: grid;
-  place-items: center;
-  border-radius: 50%;
-  overflow: hidden;
-  background: #e5e7eb;
-  flex-shrink: 0;
-}
-.sa-img {
-  width: 100%;
-  height: 100%;
-  object-fit: cover;
   display: block;
-}
-.sa-ph {
-  width: 64%;
-  height: 64%;
-  color: #9aa1ac;
+  flex-shrink: 0;
+  border-radius: 50%;
 }
 </style>
diff --git a/frontend/src/components/schedule/ScheduleCategoryModal.vue b/frontend/src/components/schedule/ScheduleCategoryModal.vue
index 432b305..a357511 100644
--- a/frontend/src/components/schedule/ScheduleCategoryModal.vue
+++ b/frontend/src/components/schedule/ScheduleCategoryModal.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 // 카테고리 생성/수정 모달 — 이름 + 색상(hue 슬라이더)
-import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
+import { computed, ref } from 'vue'
+import BaseModal from '@/components/common/BaseModal.vue'
 import type {
   ApiScheduleCategory,
   ScheduleCategoryPayload,
@@ -57,181 +58,60 @@ function submit(): void {
   if (!valid.value) return
   emit('save', { label: name.value.trim(), color: color.value })
 }
-function onKey(ev: KeyboardEvent): void {
-  if (ev.key === 'Escape') emit('close')
-}
-onMounted(() => document.addEventListener('keydown', onKey))
-onBeforeUnmount(() => document.removeEventListener('keydown', onKey))
 </script>
 
 <template>
-  <div
-    class="modal-back"
-    @mousedown.self="emit('close')"
+  <BaseModal
+    :title="isEdit ? '카테고리 편집' : '새 카테고리'"
+    size="sm"
+    @close="emit('close')"
   >
-    <div class="modal modal-sm">
-      <div class="modal-head">
-        <h3>{{ isEdit ? '카테고리 편집' : '새 카테고리' }}</h3>
-        <button
-          class="modal-x"
-          @click="emit('close')"
+    <label class="form-field"><span class="form-label">이름</span>
+      <input
+        v-model="name"
+        class="form-input"
+        placeholder="카테고리 이름"
+        autofocus
+        @keydown.enter="submit"
+      >
+    </label>
+    <div class="form-field">
+      <span class="form-label">색상</span>
+      <div class="cat-color">
+        <span
+          class="cat-dot"
+          :style="{ background: color }"
+        />
+        <input
+          v-model.number="hue"
+          type="range"
+          min="0"
+          max="359"
+          class="hue-slider"
+          :style="{ '--cur': color }"
         >
-          <svg
-            viewBox="0 0 24 24"
-            fill="none"
-            stroke="currentColor"
-            stroke-width="2.2"
-            stroke-linecap="round"
-          ><path d="M18 6 6 18M6 6l12 12" /></svg>
-        </button>
-      </div>
-      <div class="modal-body">
-        <label class="f-field"><span class="f-label">이름</span>
-          <input
-            v-model="name"
-            class="f-input"
-            placeholder="카테고리 이름"
-            autofocus
-            @keydown.enter="submit"
-          >
-        </label>
-        <div class="f-field">
-          <span class="f-label">색상</span>
-          <div class="cat-color">
-            <span
-              class="cat-dot"
-              :style="{ background: color }"
-            />
-            <input
-              v-model.number="hue"
-              type="range"
-              min="0"
-              max="359"
-              class="hue-slider"
-              :style="{ '--cur': color }"
-            >
-          </div>
-        </div>
-      </div>
-      <div class="modal-foot">
-        <button
-          class="mbtn"
-          @click="emit('close')"
-        >
-          취소
-        </button>
-        <button
-          class="mbtn primary"
-          :disabled="!valid"
-          @click="submit"
-        >
-          {{ isEdit ? '저장' : '추가' }}
-        </button>
       </div>
     </div>
-  </div>
+
+    <template #foot>
+      <button
+        class="mbtn"
+        @click="emit('close')"
+      >
+        취소
+      </button>
+      <button
+        class="mbtn primary"
+        :disabled="!valid"
+        @click="submit"
+      >
+        {{ isEdit ? '저장' : '추가' }}
+      </button>
+    </template>
+  </BaseModal>
 </template>
 
 <style scoped>
-.modal-back {
-  position: fixed;
-  inset: 0;
-  z-index: 100;
-  background: rgba(20, 24, 33, 0.5);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  padding: 1.5rem;
-}
-.modal {
-  width: 100%;
-  max-width: 33.75rem;
-  background: #fff;
-  border-radius: 0.875rem;
-  box-shadow: 0 24px 64px rgba(20, 24, 33, 0.32);
-  display: flex;
-  flex-direction: column;
-}
-.modal.modal-sm {
-  max-width: 27.5rem;
-}
-.modal-head {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 1.375rem 1.5rem 1rem;
-}
-.modal-head h3 {
-  font-size: 1.0625rem;
-  font-weight: 700;
-  letter-spacing: -0.01875rem;
-}
-.modal-x {
-  width: 2rem;
-  height: 2rem;
-  border: none;
-  background: transparent;
-  color: var(--text-3);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  display: grid;
-  place-items: center;
-  margin-right: -0.3125rem;
-}
-.modal-x:hover {
-  background: #f1f2f4;
-  color: var(--text);
-}
-.modal-x svg {
-  width: 1.125rem;
-  height: 1.125rem;
-}
-.modal-body {
-  padding: 0.5rem 1.5rem 0.75rem;
-  display: flex;
-  flex-direction: column;
-  gap: 1.125rem;
-  /* 전역 .modal-body(확인 다이얼로그용)의 가운데 정렬을 폼 모달에선 왼쪽으로 */
-  text-align: left;
-}
-.modal-foot {
-  display: flex;
-  justify-content: flex-end;
-  gap: 0.5625rem;
-  padding: 1rem 1.5rem;
-  border-top: 1px solid var(--border);
-  background: #fafbfc;
-  border-radius: 0 0 0.875rem 0.875rem;
-}
-.f-field {
-  display: flex;
-  flex-direction: column;
-  gap: 0.5rem;
-}
-.f-label {
-  font-size: 0.781rem;
-  font-weight: 600;
-  color: var(--text-2);
-}
-.f-input {
-  width: 100%;
-  height: 2.5rem;
-  padding: 0 0.75rem;
-  border: 1px solid var(--border-strong);
-  border-radius: var(--radius);
-  font-family: inherit;
-  font-size: 0.844rem;
-  color: var(--text);
-  background: #fff;
-}
-.f-input::placeholder {
-  color: var(--text-3);
-}
-.f-input:focus {
-  outline: none;
-  border-color: var(--accent);
-  box-shadow: 0 0 0 3px var(--accent-weak);
-}
 .cat-color {
   display: flex;
   align-items: center;
@@ -284,20 +164,4 @@ onBeforeUnmount(() => document.removeEventListener('keydown', onKey))
   box-shadow: 0 1px 4px rgba(20, 24, 33, 0.4);
   cursor: grab;
 }
-/* 푸터 버튼 — 전역 .mbtn(확인 다이얼로그용 flex:1) 대신 폼 모달용 우측정렬 컴팩트(멤버 초대 모달과 동일).
-   색/서체/테두리는 전역 .mbtn / .mbtn.primary 가 담당한다. */
-.mbtn {
-  flex: 0 0 auto;
-  height: 2.375rem;
-  padding: 0 1rem;
-}
-.mbtn:disabled {
-  opacity: 0.45;
-  cursor: not-allowed;
-}
-.mbtn.primary:disabled,
-.mbtn.primary:disabled:hover {
-  background: var(--accent);
-  border-color: var(--accent);
-}
 </style>
diff --git a/frontend/src/components/schedule/ScheduleDetailPanel.vue b/frontend/src/components/schedule/ScheduleDetailPanel.vue
index 400b433..e79faf0 100644
--- a/frontend/src/components/schedule/ScheduleDetailPanel.vue
+++ b/frontend/src/components/schedule/ScheduleDetailPanel.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 // 우측 슬라이드 상세 패널 — 선택 일정의 시간/장소/참석자/메모 + 수정·삭제
-import { computed, ref, watch, onBeforeUnmount } from 'vue'
+import { computed, ref, watch } from 'vue'
+import { useClickOutside } from '@/composables/useClickOutside'
 import ScheduleAvatar from './ScheduleAvatar.vue'
 import { eventDateText, spanDays } from '@/shared/utils/scheduleDate'
 import type { ApiScheduleCategory, ApiScheduleEvent } from '@/types/schedule'
@@ -36,15 +37,7 @@ const dur = computed(() =>
 // 참석자 스택 토글
 const attOpen = ref(false)
 const attRef = ref<HTMLElement | null>(null)
-function onDoc(e: MouseEvent): void {
-  if (!attOpen.value) return
-  if (attRef.value && !attRef.value.contains(e.target as Node)) attOpen.value = false
-}
-watch(attOpen, (v) => {
-  if (v) document.addEventListener('mousedown', onDoc)
-  else document.removeEventListener('mousedown', onDoc)
-})
-onBeforeUnmount(() => document.removeEventListener('mousedown', onDoc))
+useClickOutside(attOpen, () => (attOpen.value = false), [attRef], { esc: false })
 
 const MAX = 6
 const attendees = computed(() => ev.value?.attendees ?? [])
diff --git a/frontend/src/components/schedule/ScheduleEventModal.vue b/frontend/src/components/schedule/ScheduleEventModal.vue
index 970945e..7023675 100644
--- a/frontend/src/components/schedule/ScheduleEventModal.vue
+++ b/frontend/src/components/schedule/ScheduleEventModal.vue
@@ -1,6 +1,8 @@
 <script setup lang="ts">
 // 일정 생성/수정 모달
-import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+import { computed, ref, watch } from 'vue'
+import BaseModal from '@/components/common/BaseModal.vue'
+import { useClickOutside } from '@/composables/useClickOutside'
 import ScheduleAvatar from './ScheduleAvatar.vue'
 import type {
   ApiScheduleCategory,
@@ -90,22 +92,8 @@ function togglePerson(id: string): void {
     ? attendeeIds.value.filter((x) => x !== id)
     : [...attendeeIds.value, id]
 }
-function onDoc(ev: MouseEvent): void {
-  if (msRef.value && !msRef.value.contains(ev.target as Node)) msOpen.value = false
-}
-watch(msOpen, (v) => {
-  if (v) document.addEventListener('mousedown', onDoc)
-  else document.removeEventListener('mousedown', onDoc)
-})
-
-function onKey(ev: KeyboardEvent): void {
-  if (ev.key === 'Escape') emit('close')
-}
-onMounted(() => document.addEventListener('keydown', onKey))
-onBeforeUnmount(() => {
-  document.removeEventListener('keydown', onKey)
-  document.removeEventListener('mousedown', onDoc)
-})
+// 참석자 멀티셀렉트 바깥클릭 닫기(ESC 는 모달 닫기에서 처리)
+useClickOutside(msOpen, () => (msOpen.value = false), [msRef], { esc: false })
 
 function submit(): void {
   if (!valid.value) return
@@ -125,373 +113,201 @@ function submit(): void {
 </script>
 
 <template>
-  <div
-    class="modal-back"
-    @mousedown.self="emit('close')"
+  <BaseModal
+    :title="isEdit ? '일정 수정' : '새 일정'"
+    @close="emit('close')"
   >
-    <div class="modal">
-      <div class="modal-head">
-        <h3>{{ isEdit ? '일정 수정' : '새 일정' }}</h3>
-        <button
-          class="modal-x"
-          @click="emit('close')"
+    <label class="form-field"><span class="form-label">제목</span>
+      <input
+        v-model="title"
+        class="form-input"
+        placeholder="일정 제목"
+        autofocus
+      >
+    </label>
+    <label class="form-field"><span class="form-label">유형</span>
+      <div class="form-select-wrap">
+        <select
+          v-model="categoryId"
+          class="form-select"
         >
+          <option
+            v-for="c in ordered"
+            :key="c.id"
+            :value="c.id"
+          >
+            {{ c.label }}
+          </option>
+        </select>
+        <span class="form-select-chev">
           <svg
             viewBox="0 0 24 24"
             fill="none"
             stroke="currentColor"
-            stroke-width="2.2"
+            stroke-width="2"
             stroke-linecap="round"
-          ><path d="M18 6 6 18M6 6l12 12" /></svg>
-        </button>
+            stroke-linejoin="round"
+          ><path d="m6 9 6 6 6-6" /></svg>
+        </span>
       </div>
-      <div class="modal-body">
-        <label class="f-field"><span class="f-label">제목</span>
-          <input
-            v-model="title"
-            class="f-input"
-            placeholder="일정 제목"
-            autofocus
+    </label>
+    <div class="form-row">
+      <label class="form-field"><span class="form-label">시작일</span>
+        <input
+          v-model="s"
+          type="date"
+          class="form-input"
+        >
+      </label>
+      <label class="form-field"><span class="form-label">종료일</span>
+        <input
+          v-model="e"
+          type="date"
+          class="form-input"
+          :min="s"
+        >
+      </label>
+    </div>
+    <div class="form-field">
+      <span class="form-label">시간</span>
+      <div class="time-row">
+        <input
+          v-model="startT"
+          type="time"
+          class="form-input time-input"
+        >
+        <span class="time-dash">–</span>
+        <input
+          v-model="endT"
+          type="time"
+          class="form-input time-input"
+        >
+      </div>
+    </div>
+    <label class="form-field"><span class="form-label">장소</span>
+      <input
+        v-model="place"
+        class="form-input"
+        placeholder="장소 또는 화상"
+      >
+    </label>
+    <div class="form-field">
+      <span class="form-label">참석자</span>
+      <div
+        ref="msRef"
+        class="ms"
+      >
+        <button
+          type="button"
+          class="ms-field"
+          :class="{ empty: !allHands && attendeeIds.length === 0, open: msOpen }"
+          @click="msOpen = !msOpen"
+        >
+          <span class="ms-val">{{ msLabel }}</span>
+          <span class="chev">
+            <svg
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              stroke-width="2"
+              stroke-linecap="round"
+              stroke-linejoin="round"
+            ><path d="m6 9 6 6 6-6" /></svg>
+          </span>
+        </button>
+        <div
+          v-if="msOpen"
+          class="ms-panel"
+        >
+          <button
+            type="button"
+            class="ms-item"
+            :class="{ on: allHands }"
+            @click="toggleAll"
           >
-        </label>
-        <label class="f-field"><span class="f-label">유형</span>
-          <div class="f-select-wrap">
-            <select
-              v-model="categoryId"
-              class="f-select"
+            <span class="ms-all">전</span>
+            <span class="ms-name">전 직원</span>
+            <span
+              v-if="allHands"
+              class="ms-check"
             >
-              <option
-                v-for="c in ordered"
-                :key="c.id"
-                :value="c.id"
-              >
-                {{ c.label }}
-              </option>
-            </select>
-            <span class="f-select-chev">
               <svg
                 viewBox="0 0 24 24"
                 fill="none"
                 stroke="currentColor"
-                stroke-width="2"
+                stroke-width="2.4"
                 stroke-linecap="round"
                 stroke-linejoin="round"
-              ><path d="m6 9 6 6 6-6" /></svg>
+              ><path d="M20 6 9 17l-5-5" /></svg>
             </span>
-          </div>
-        </label>
-        <div class="f-row">
-          <label class="f-field"><span class="f-label">시작일</span>
-            <input
-              v-model="s"
-              type="date"
-              class="f-input"
-            >
-          </label>
-          <label class="f-field"><span class="f-label">종료일</span>
-            <input
-              v-model="e"
-              type="date"
-              class="f-input"
-              :min="s"
-            >
-          </label>
-        </div>
-        <div class="f-field">
-          <span class="f-label">시간</span>
-          <div class="time-row">
-            <input
-              v-model="startT"
-              type="time"
-              class="f-input time-input"
-            >
-            <span class="time-dash">–</span>
-            <input
-              v-model="endT"
-              type="time"
-              class="f-input time-input"
-            >
-          </div>
-        </div>
-        <label class="f-field"><span class="f-label">장소</span>
-          <input
-            v-model="place"
-            class="f-input"
-            placeholder="장소 또는 화상"
+          </button>
+          <div class="ms-div" />
+          <button
+            v-for="p in people"
+            :key="p.id"
+            type="button"
+            class="ms-item"
+            :class="{ on: attendeeIds.includes(p.id) }"
+            @click="togglePerson(p.id)"
           >
-        </label>
-        <div class="f-field">
-          <span class="f-label">참석자</span>
+            <ScheduleAvatar
+              :name="p.name"
+              :avatar-url="p.avatarUrl"
+              :size="20"
+            />
+            <span class="ms-name">{{ p.name }}</span>
+            <span
+              v-if="attendeeIds.includes(p.id)"
+              class="ms-check"
+            >
+              <svg
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                stroke-width="2.4"
+                stroke-linecap="round"
+                stroke-linejoin="round"
+              ><path d="M20 6 9 17l-5-5" /></svg>
+            </span>
+          </button>
           <div
-            ref="msRef"
-            class="ms"
+            v-if="people.length === 0"
+            class="ms-empty"
           >
-            <button
-              type="button"
-              class="ms-field"
-              :class="{ empty: !allHands && attendeeIds.length === 0, open: msOpen }"
-              @click="msOpen = !msOpen"
-            >
-              <span class="ms-val">{{ msLabel }}</span>
-              <span class="chev">
-                <svg
-                  viewBox="0 0 24 24"
-                  fill="none"
-                  stroke="currentColor"
-                  stroke-width="2"
-                  stroke-linecap="round"
-                  stroke-linejoin="round"
-                ><path d="m6 9 6 6 6-6" /></svg>
-              </span>
-            </button>
-            <div
-              v-if="msOpen"
-              class="ms-panel"
-            >
-              <button
-                type="button"
-                class="ms-item"
-                :class="{ on: allHands }"
-                @click="toggleAll"
-              >
-                <span class="ms-all">전</span>
-                <span class="ms-name">전 직원</span>
-                <span
-                  v-if="allHands"
-                  class="ms-check"
-                >
-                  <svg
-                    viewBox="0 0 24 24"
-                    fill="none"
-                    stroke="currentColor"
-                    stroke-width="2.4"
-                    stroke-linecap="round"
-                    stroke-linejoin="round"
-                  ><path d="M20 6 9 17l-5-5" /></svg>
-                </span>
-              </button>
-              <div class="ms-div" />
-              <button
-                v-for="p in people"
-                :key="p.id"
-                type="button"
-                class="ms-item"
-                :class="{ on: attendeeIds.includes(p.id) }"
-                @click="togglePerson(p.id)"
-              >
-                <ScheduleAvatar
-                  :name="p.name"
-                  :avatar-url="p.avatarUrl"
-                  :size="20"
-                />
-                <span class="ms-name">{{ p.name }}</span>
-                <span
-                  v-if="attendeeIds.includes(p.id)"
-                  class="ms-check"
-                >
-                  <svg
-                    viewBox="0 0 24 24"
-                    fill="none"
-                    stroke="currentColor"
-                    stroke-width="2.4"
-                    stroke-linecap="round"
-                    stroke-linejoin="round"
-                  ><path d="M20 6 9 17l-5-5" /></svg>
-                </span>
-              </button>
-              <div
-                v-if="people.length === 0"
-                class="ms-empty"
-              >
-                등록된 사용자가 없습니다
-              </div>
-            </div>
+            등록된 사용자가 없습니다
           </div>
         </div>
-        <label class="f-field"><span class="f-label">설명</span>
-          <textarea
-            v-model="desc"
-            class="f-input f-textarea"
-            placeholder="메모"
-            rows="3"
-          />
-        </label>
-      </div>
-      <div class="modal-foot">
-        <button
-          class="mbtn"
-          @click="emit('close')"
-        >
-          취소
-        </button>
-        <button
-          class="mbtn primary"
-          :disabled="!valid"
-          @click="submit"
-        >
-          {{ isEdit ? '저장' : '추가' }}
-        </button>
       </div>
     </div>
-  </div>
+    <label class="form-field"><span class="form-label">설명</span>
+      <textarea
+        v-model="desc"
+        class="form-input form-textarea"
+        placeholder="메모"
+        rows="3"
+      />
+    </label>
+
+    <template #foot>
+      <button
+        class="mbtn"
+        @click="emit('close')"
+      >
+        취소
+      </button>
+      <button
+        class="mbtn primary"
+        :disabled="!valid"
+        @click="submit"
+      >
+        {{ isEdit ? '저장' : '추가' }}
+      </button>
+    </template>
+  </BaseModal>
 </template>
 
 <style scoped>
-/* 사이트 공통 폼 모달 규격(멤버 초대 모달 + relay.css 토큰)에 맞춤 — rem 단위 */
-.modal-back {
-  position: fixed;
-  inset: 0;
-  z-index: 100;
-  background: rgba(20, 24, 33, 0.5);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  padding: 1.5rem;
-}
-.modal {
-  width: 100%;
-  max-width: 33.75rem;
-  max-height: 90vh;
-  overflow-y: auto;
-  background: #fff;
-  border-radius: 0.875rem;
-  box-shadow: 0 24px 64px rgba(20, 24, 33, 0.32);
-  display: flex;
-  flex-direction: column;
-}
-.modal-head {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 1.375rem 1.5rem 1rem;
-  position: sticky;
-  top: 0;
-  background: #fff;
-  border-radius: 0.875rem 0.875rem 0 0;
-}
-.modal-head h3 {
-  font-size: 1.0625rem;
-  font-weight: 700;
-  letter-spacing: -0.01875rem;
-}
-.modal-x {
-  width: 2rem;
-  height: 2rem;
-  border: none;
-  background: transparent;
-  color: var(--text-3);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  display: grid;
-  place-items: center;
-  margin-right: -0.3125rem;
-}
-.modal-x:hover {
-  background: #f1f2f4;
-  color: var(--text);
-}
-.modal-x svg {
-  width: 1.125rem;
-  height: 1.125rem;
-}
-.modal-body {
-  padding: 0.5rem 1.5rem 0.75rem;
-  display: flex;
-  flex-direction: column;
-  gap: 1.125rem;
-  /* 전역 .modal-body(확인 다이얼로그용)의 가운데 정렬을 폼 모달에선 왼쪽으로 */
-  text-align: left;
-}
-.modal-foot {
-  display: flex;
-  justify-content: flex-end;
-  gap: 0.5625rem;
-  padding: 1rem 1.5rem;
-  border-top: 1px solid var(--border);
-  background: #fafbfc;
-  position: sticky;
-  bottom: 0;
-  border-radius: 0 0 0.875rem 0.875rem;
-}
-.f-field {
-  display: flex;
-  flex-direction: column;
-  gap: 0.5rem;
-}
-.f-label {
-  font-size: 0.781rem;
-  font-weight: 600;
-  color: var(--text-2);
-}
-.f-input {
-  width: 100%;
-  height: 2.5rem;
-  padding: 0 0.75rem;
-  border: 1px solid var(--border-strong);
-  border-radius: var(--radius);
-  font-family: inherit;
-  font-size: 0.844rem;
-  color: var(--text);
-  background: #fff;
-}
-.f-input::placeholder {
-  color: var(--text-3);
-}
-.f-input:focus {
-  outline: none;
-  border-color: var(--accent);
-  box-shadow: 0 0 0 3px var(--accent-weak);
-}
-.f-textarea {
-  height: auto;
-  padding: 0.625rem 0.75rem;
-  resize: vertical;
-  line-height: 1.5;
-  min-height: 5.75rem;
-}
-.f-row {
-  display: flex;
-  gap: 0.75rem;
-}
-.f-row .f-field {
-  flex: 1;
-  min-width: 0;
-}
-.f-select-wrap {
-  position: relative;
-}
-.f-select {
-  -webkit-appearance: none;
-  appearance: none;
-  width: 100%;
-  height: 2.5rem;
-  padding: 0 2.125rem 0 0.75rem;
-  border: 1px solid var(--border-strong);
-  border-radius: var(--radius);
-  font-family: inherit;
-  font-size: 0.844rem;
-  color: var(--text);
-  background: #fff;
-  cursor: pointer;
-}
-.f-select:focus {
-  outline: none;
-  border-color: var(--accent);
-  box-shadow: 0 0 0 3px var(--accent-weak);
-}
-.f-select-chev {
-  position: absolute;
-  right: 0.625rem;
-  top: 50%;
-  transform: translateY(-50%);
-  display: grid;
-  color: var(--text-3);
-  pointer-events: none;
-}
-.f-select-chev svg {
-  width: 0.9375rem;
-  height: 0.9375rem;
-}
+/* 시간 입력 행 */
 .time-row {
   display: flex;
   align-items: center;
@@ -505,6 +321,8 @@ function submit(): void {
 .time-dash {
   color: var(--text-3);
 }
+
+/* 참석자 멀티셀렉트 */
 .ms {
   position: relative;
 }
@@ -600,7 +418,7 @@ function submit(): void {
   height: 0.9375rem;
 }
 .ms-all {
-  /* 참석자 아바타(ScheduleAvatar :size="20" = 20px)와 동일 크기로 고정 */
+  /* 참석자 아바타(ScheduleAvatar :size="20" = 20px)와 동일 크기 */
   width: 20px;
   height: 20px;
   border-radius: 50%;
@@ -623,20 +441,4 @@ function submit(): void {
   color: var(--text-3);
   text-align: center;
 }
-/* 푸터 버튼 — 전역 .mbtn(확인 다이얼로그용 flex:1) 대신 폼 모달용 우측정렬 컴팩트(멤버 초대 모달과 동일).
-   색/서체/테두리는 전역 .mbtn / .mbtn.primary 가 담당한다. */
-.mbtn {
-  flex: 0 0 auto;
-  height: 2.375rem;
-  padding: 0 1rem;
-}
-.mbtn:disabled {
-  opacity: 0.45;
-  cursor: not-allowed;
-}
-.mbtn.primary:disabled,
-.mbtn.primary:disabled:hover {
-  background: var(--accent);
-  border-color: var(--accent);
-}
 </style>
diff --git a/frontend/src/components/schedule/ScheduleTypeFilter.vue b/frontend/src/components/schedule/ScheduleTypeFilter.vue
index 1930b78..d7da7a5 100644
--- a/frontend/src/components/schedule/ScheduleTypeFilter.vue
+++ b/frontend/src/components/schedule/ScheduleTypeFilter.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 // 유형 필터 + 카테고리 관리 드롭다운
-import { computed, ref, watch, onBeforeUnmount } from 'vue'
+import { computed, ref } from 'vue'
+import { useClickOutside } from '@/composables/useClickOutside'
 import type { ApiScheduleCategory } from '@/types/schedule'
 
 const props = defineProps<{
@@ -18,14 +19,7 @@ const emit = defineEmits<{
 
 const open = ref(false)
 const rootRef = ref<HTMLElement | null>(null)
-function onDoc(e: MouseEvent): void {
-  if (rootRef.value && !rootRef.value.contains(e.target as Node)) open.value = false
-}
-watch(open, (v) => {
-  if (v) document.addEventListener('mousedown', onDoc)
-  else document.removeEventListener('mousedown', onDoc)
-})
-onBeforeUnmount(() => document.removeEventListener('mousedown', onDoc))
+useClickOutside(open, () => (open.value = false), [rootRef], { esc: false })
 
 const ordered = computed(() =>
   [...props.categories].sort((a, b) => a.sortOrder - b.sortOrder),
diff --git a/frontend/src/composables/useClickOutside.ts b/frontend/src/composables/useClickOutside.ts
new file mode 100644
index 0000000..fb9413f
--- /dev/null
+++ b/frontend/src/composables/useClickOutside.ts
@@ -0,0 +1,54 @@
+import { onBeforeUnmount, onMounted, type Ref } from 'vue'
+
+// 바깥 클릭 / ESC / 스크롤 시 닫기 공용 훅.
+// 드롭다운·팝오버·메뉴 등에서 반복되던 document 리스너 등록/해제 로직을 한 곳으로 모은다.
+//
+// - isOpen:    열림 상태 ref (닫혀 있으면 아무 동작 안 함)
+// - close:     닫기 콜백
+// - containers: "내부"로 간주할 엘리먼트 ref 목록. 클릭이 이 안이면 무시한다
+//               (Teleport 로 body 에 띄운 메뉴는 트리거와 메뉴 ref 를 모두 넣는다)
+// - opts.event:        바깥 클릭 감지 이벤트 (기본 'mousedown')
+// - opts.esc:          Escape 로 닫을지 (기본 true)
+// - opts.closeOnScroll: 스크롤/리사이즈 시 닫을지 — fixed 로 띄운 메뉴 위치 어긋남 방지 (기본 false)
+export function useClickOutside(
+  isOpen: Ref<boolean>,
+  close: () => void,
+  containers: Ref<HTMLElement | null>[],
+  opts: {
+    event?: 'mousedown' | 'click'
+    esc?: boolean
+    closeOnScroll?: boolean
+  } = {},
+): void {
+  const { event = 'mousedown', esc = true, closeOnScroll = false } = opts
+
+  function onPointer(e: Event): void {
+    if (!isOpen.value) return
+    const t = e.target as Node
+    if (containers.some((r) => r.value?.contains(t))) return
+    close()
+  }
+  function onKey(e: KeyboardEvent): void {
+    if (isOpen.value && e.key === 'Escape') close()
+  }
+  function onScroll(): void {
+    if (isOpen.value) close()
+  }
+
+  onMounted(() => {
+    document.addEventListener(event, onPointer, true)
+    if (esc) document.addEventListener('keydown', onKey)
+    if (closeOnScroll) {
+      window.addEventListener('scroll', onScroll, true)
+      window.addEventListener('resize', onScroll)
+    }
+  })
+  onBeforeUnmount(() => {
+    document.removeEventListener(event, onPointer, true)
+    if (esc) document.removeEventListener('keydown', onKey)
+    if (closeOnScroll) {
+      window.removeEventListener('scroll', onScroll, true)
+      window.removeEventListener('resize', onScroll)
+    }
+  })
+}
diff --git a/frontend/src/composables/useDropdownMenu.ts b/frontend/src/composables/useDropdownMenu.ts
new file mode 100644
index 0000000..58eb258
--- /dev/null
+++ b/frontend/src/composables/useDropdownMenu.ts
@@ -0,0 +1,58 @@
+import { nextTick, ref } from 'vue'
+import { useClickOutside } from './useClickOutside'
+
+// Teleport(body) + fixed 위치로 띄우는 드롭다운 메뉴 공용 훅.
+// 트리거 기준 좌표 계산 · open 토글 · 바깥클릭/ESC/스크롤 닫기를 한 곳으로 모은다.
+// (DropdownSelect, StatusSelect 등 스크롤/overflow 컨테이너 안에서도 안 잘리는 메뉴에 사용)
+//
+// - align:      트리거 좌/우 끝 기준 정렬 (기본 'left')
+// - matchWidth: 메뉴 최소 너비를 트리거 너비에 맞출지 (기본 false)
+// - gap:        트리거 하단과 메뉴 사이 간격(px) (기본 6)
+// - esc:        ESC 로 닫을지 (기본 true)
+export function useDropdownMenu(
+  opts: {
+    align?: 'left' | 'right'
+    matchWidth?: boolean
+    gap?: number
+    esc?: boolean
+  } = {},
+) {
+  const { align = 'left', matchWidth = false, gap = 6, esc = true } = opts
+
+  const open = ref(false)
+  const triggerRef = ref<HTMLElement | null>(null)
+  const menuRef = ref<HTMLElement | null>(null)
+  // 메뉴 fixed 위치(트리거 기준 계산)
+  const menuStyle = ref<Record<string, string>>({})
+
+  function position(): void {
+    const el = triggerRef.value
+    if (!el) return
+    const r = el.getBoundingClientRect()
+    const style: Record<string, string> = { top: `${r.bottom + gap}px` }
+    if (matchWidth) style.minWidth = `${r.width}px`
+    if (align === 'right') {
+      style.right = `${Math.max(0, window.innerWidth - r.right)}px`
+    } else {
+      style.left = `${r.left}px`
+    }
+    menuStyle.value = style
+  }
+
+  function toggle(): void {
+    open.value = !open.value
+    if (open.value) void nextTick(position)
+  }
+  function close(): void {
+    open.value = false
+  }
+
+  // 바깥클릭(트리거/메뉴 외부)·ESC·스크롤(위치 어긋남) 닫기
+  useClickOutside(open, close, [triggerRef, menuRef], {
+    event: 'click',
+    esc,
+    closeOnScroll: true,
+  })
+
+  return { open, triggerRef, menuRef, menuStyle, toggle, close, position }
+}
diff --git a/frontend/src/pages/relay/MyTasksPage.vue b/frontend/src/pages/relay/MyTasksPage.vue
index 4be4bb8..1041eb6 100644
--- a/frontend/src/pages/relay/MyTasksPage.vue
+++ b/frontend/src/pages/relay/MyTasksPage.vue
@@ -7,6 +7,8 @@ import { RouterLink } from 'vue-router'
 import AppShell from '@/layouts/AppShell.vue'
 import UserAvatar from '@/components/UserAvatar.vue'
 import DropdownSelect from '@/components/DropdownSelect.vue'
+import LoadMore from '@/components/common/LoadMore.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
 import { useMyTaskStore } from '@/stores/my-task.store'
 import { useProjectStore } from '@/stores/project.store'
 import { countActive, type MyTaskRow } from '@/mock/relay.mock'
@@ -215,18 +217,12 @@ function loadMore() {
       </div>
 
       <!-- 로딩 / 빈 상태 -->
-      <div
-        v-if="loading"
-        class="state-msg"
-      >
+      <EmptyState v-if="loading">
         내 업무를 불러오는 중…
-      </div>
-      <div
-        v-else-if="isEmpty"
-        class="state-msg"
-      >
+      </EmptyState>
+      <EmptyState v-else-if="isEmpty">
         {{ view === 'assigned' ? '담당 중인 업무가 없습니다.' : '지시한 업무가 없습니다.' }}
-      </div>
+      </EmptyState>
 
       <!-- 상태 그룹 -->
       <div
@@ -412,15 +408,11 @@ function loadMore() {
       </div>
 
       <!-- 더보기 -->
-      <button
+      <LoadMore
         v-if="hasMore"
-        class="load-more"
-        type="button"
-        :disabled="loadingMore"
-        @click="loadMore"
-      >
-        {{ loadingMore ? '불러오는 중…' : '더보기' }}
-      </button>
+        :loading="loadingMore"
+        @load="loadMore"
+      />
     </div>
   </AppShell>
 </template>
@@ -537,16 +529,6 @@ function loadMore() {
 }
 
 /* 로딩/빈 상태 */
-.state-msg {
-  background: var(--panel);
-  border: 1px solid var(--border);
-  border-radius: 0.625rem;
-  box-shadow: var(--shadow-sm);
-  padding: 2.5rem 1.25rem;
-  text-align: center;
-  font-size: 0.844rem;
-  color: var(--text-3);
-}
 
 /* 상태 그룹 */
 .group {
diff --git a/frontend/src/pages/relay/ProjectActivityPage.vue b/frontend/src/pages/relay/ProjectActivityPage.vue
index 38a053b..a5db9eb 100644
--- a/frontend/src/pages/relay/ProjectActivityPage.vue
+++ b/frontend/src/pages/relay/ProjectActivityPage.vue
@@ -7,11 +7,20 @@ import ProjectHeader from '@/components/ProjectHeader.vue'
 import ProjectTabs from '@/components/ProjectTabs.vue'
 import UserAvatar from '@/components/UserAvatar.vue'
 import DropdownSelect from '@/components/DropdownSelect.vue'
+import SegmentedTabs from '@/components/common/SegmentedTabs.vue'
+import LoadMore from '@/components/common/LoadMore.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
 import { useProjectStore } from '@/stores/project.store'
 import { useActivityStore } from '@/stores/activity.store'
 import type { Project, ActivityIcon } from '@/mock/relay.mock'
 
 type Filter = 'all' | 'task' | 'member' | 'setting'
+const FILTER_OPTIONS: { value: Filter; label: string }[] = [
+  { value: 'all', label: '전체' },
+  { value: 'task', label: '업무' },
+  { value: 'member', label: '멤버' },
+  { value: 'setting', label: '설정' },
+]
 
 const route = useRoute()
 const projectId = computed(() => String(route.params.projectId))
@@ -139,32 +148,10 @@ const ActIcon = defineComponent({
 
       <!-- 툴바 -->
       <div class="toolbar">
-        <div class="segmented">
-          <button
-            :class="{ active: filter === 'all' }"
-            @click="filter = 'all'"
-          >
-            전체
-          </button>
-          <button
-            :class="{ active: filter === 'task' }"
-            @click="filter = 'task'"
-          >
-            업무
-          </button>
-          <button
-            :class="{ active: filter === 'member' }"
-            @click="filter = 'member'"
-          >
-            멤버
-          </button>
-          <button
-            :class="{ active: filter === 'setting' }"
-            @click="filter = 'setting'"
-          >
-            설정
-          </button>
-        </div>
+        <SegmentedTabs
+          v-model="filter"
+          :options="FILTER_OPTIONS"
+        />
         <DropdownSelect
           v-model="memberFilter"
           :options="memberOptions"
@@ -192,18 +179,12 @@ const ActIcon = defineComponent({
       </div>
 
       <!-- 로딩 / 빈 상태 -->
-      <div
-        v-if="loading"
-        class="feed-state"
-      >
+      <EmptyState v-if="loading">
         활동을 불러오는 중입니다…
-      </div>
-      <div
-        v-else-if="isEmpty"
-        class="feed-state"
-      >
+      </EmptyState>
+      <EmptyState v-else-if="isEmpty">
         아직 기록된 활동이 없습니다.
-      </div>
+      </EmptyState>
 
       <!-- 활동 피드 -->
       <!-- act-text 의 v-html 은 store 에서 사용자 입력을 escapeHtml 로 이스케이프한 뒤 신뢰 태그만 조립한 마크업이다 (XSS 위험 없음) -->
@@ -243,20 +224,12 @@ const ActIcon = defineComponent({
         </div>
       </div>
 
-      <!-- 더 보기 — 서버 페이지네이션(누적). 필터와 무관하게 다음 페이지를 불러온다 -->
-      <div
+      <!-- 더보기 — 서버 페이지네이션(누적). 필터와 무관하게 다음 페이지를 불러온다 -->
+      <LoadMore
         v-if="!loading && activityStore.hasMore"
-        class="more-row"
-      >
-        <button
-          type="button"
-          class="more-btn"
-          :disabled="activityStore.loadingMore"
-          @click="activityStore.loadMore()"
-        >
-          {{ activityStore.loadingMore ? '불러오는 중…' : '더 보기' }}
-        </button>
-      </div>
+        :loading="activityStore.loadingMore"
+        @load="activityStore.loadMore()"
+      />
     </div>
   </AppShell>
 </template>
@@ -388,39 +361,4 @@ const ActIcon = defineComponent({
   margin-left: 0.75rem;
 }
 
-/* 더 보기 */
-.more-row {
-  display: flex;
-  justify-content: center;
-  margin-top: 0.875rem;
-}
-.more-btn {
-  border: 1px solid var(--border);
-  background: var(--panel);
-  border-radius: 0.5rem;
-  padding: 0.5rem 1.25rem;
-  font-size: 0.813rem;
-  font-weight: 600;
-  color: var(--text-2);
-  cursor: pointer;
-}
-.more-btn:hover:not(:disabled) {
-  background: #f4f5f7;
-}
-.more-btn:disabled {
-  opacity: 0.6;
-  cursor: default;
-}
-
-/* 로딩/빈 상태 */
-.feed-state {
-  background: var(--panel);
-  border: 1px solid var(--border);
-  border-radius: 0.625rem;
-  box-shadow: var(--shadow-sm);
-  padding: 2.5rem 1.25rem;
-  text-align: center;
-  font-size: 0.844rem;
-  color: var(--text-3);
-}
 </style>
diff --git a/frontend/src/pages/relay/ProjectDetailPage.vue b/frontend/src/pages/relay/ProjectDetailPage.vue
index 9f0d714..a52203a 100644
--- a/frontend/src/pages/relay/ProjectDetailPage.vue
+++ b/frontend/src/pages/relay/ProjectDetailPage.vue
@@ -9,10 +9,14 @@ import ProjectHeader from '@/components/ProjectHeader.vue'
 import ProjectTabs from '@/components/ProjectTabs.vue'
 import UserAvatar from '@/components/UserAvatar.vue'
 import DropdownSelect from '@/components/DropdownSelect.vue'
+import SegmentedTabs from '@/components/common/SegmentedTabs.vue'
+import LoadMore from '@/components/common/LoadMore.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
 import { useProjectStore } from '@/stores/project.store'
 import { useTaskStore } from '@/stores/task.store'
 import type { TaskListQuery, TaskSegment, TaskSort } from '@/types/task'
-import type { Project, TaskStatus } from '@/mock/relay.mock'
+import { taskStatusLabel } from '@/shared/utils/format'
+import type { Project } from '@/mock/relay.mock'
 
 const route = useRoute()
 const projectId = computed(() => String(route.params.projectId))
@@ -32,6 +36,15 @@ async function loadProject() {
 
 const keyword = ref('')
 const segment = ref<TaskSegment>('all')
+// 세그먼트 탭 옵션(수량 포함) — counts 갱신에 반응
+const segOptions = computed<{ value: TaskSegment; label: string; count: number }[]>(
+  () => [
+    { value: 'all', label: '전체', count: counts.value.all },
+    { value: 'prog', label: '진행 중', count: counts.value.prog },
+    { value: 'todo', label: '대기', count: counts.value.todo },
+    { value: 'done', label: '완료', count: counts.value.done },
+  ],
+)
 const sort = ref<TaskSort>('latest')
 const SORT_OPTIONS: { value: TaskSort; label: string }[] = [
   { value: 'latest', label: '최신순' },
@@ -96,14 +109,7 @@ const isFiltered = computed(() => keyword.value.trim() !== '' || segment.value !
 // 지연 건수 — 현재 로드된 목록 기준(전역 정확 집계는 백엔드 미지원, 알려진 한계)
 const overdueCount = computed(() => tasks.value.filter((t) => t.overdue).length)
 
-// 업무 상태 → 배지 라벨
-const STATUS_LABEL: Record<TaskStatus, string> = {
-  prog: '진행 중',
-  review: '승인 대기',
-  todo: '대기',
-  done: '완료',
-  changes: '수정 요청',
-}
+// 업무 상태 → 배지 라벨은 공용 SSOT(taskStatusLabel) 사용
 </script>
 
 <template>
@@ -188,32 +194,10 @@ const STATUS_LABEL: Record<TaskStatus, string> = {
             placeholder="업무 검색…"
           >
         </div>
-        <div class="segmented">
-          <button
-            :class="{ active: segment === 'all' }"
-            @click="segment = 'all'"
-          >
-            전체 <span class="n">{{ counts.all }}</span>
-          </button>
-          <button
-            :class="{ active: segment === 'prog' }"
-            @click="segment = 'prog'"
-          >
-            진행 중 <span class="n">{{ counts.prog }}</span>
-          </button>
-          <button
-            :class="{ active: segment === 'todo' }"
-            @click="segment = 'todo'"
-          >
-            대기 <span class="n">{{ counts.todo }}</span>
-          </button>
-          <button
-            :class="{ active: segment === 'done' }"
-            @click="segment = 'done'"
-          >
-            완료 <span class="n">{{ counts.done }}</span>
-          </button>
-        </div>
+        <SegmentedTabs
+          v-model="segment"
+          :options="segOptions"
+        />
         <DropdownSelect
           v-model="sort"
           :options="SORT_OPTIONS"
@@ -254,18 +238,12 @@ const STATUS_LABEL: Record<TaskStatus, string> = {
       </div>
 
       <!-- 업무 목록 -->
-      <div
-        v-if="loading && tasks.length === 0"
-        class="state-msg"
-      >
+      <EmptyState v-if="loading && tasks.length === 0">
         업무를 불러오는 중…
-      </div>
-      <div
-        v-else-if="tasks.length === 0"
-        class="state-msg"
-      >
+      </EmptyState>
+      <EmptyState v-else-if="tasks.length === 0">
         {{ isFiltered ? '조건에 맞는 업무가 없습니다.' : '아직 등록된 업무가 없습니다. 새 업무를 지시해 보세요.' }}
-      </div>
+      </EmptyState>
       <div
         v-else
         class="list"
@@ -399,7 +377,7 @@ const STATUS_LABEL: Record<TaskStatus, string> = {
             <span
               class="st-badge"
               :class="task.status"
-            >{{ STATUS_LABEL[task.status] }}</span>
+            >{{ taskStatusLabel(task.status) }}</span>
             <span class="chev">
               <svg
                 viewBox="0 0 24 24"
@@ -417,15 +395,11 @@ const STATUS_LABEL: Record<TaskStatus, string> = {
       </div>
 
       <!-- 더보기 -->
-      <button
+      <LoadMore
         v-if="hasMore"
-        class="load-more"
-        type="button"
-        :disabled="loadingMore"
-        @click="loadMoreTasks()"
-      >
-        {{ loadingMore ? '불러오는 중…' : '더보기' }}
-      </button>
+        :loading="loadingMore"
+        @load="loadMoreTasks"
+      />
     </div>
 
     <!-- 프로젝트를 찾지 못한 경우 -->
@@ -591,13 +565,4 @@ const STATUS_LABEL: Record<TaskStatus, string> = {
   text-align: center;
   color: var(--text-2);
 }
-.state-msg {
-  padding: 2.5rem 1.125rem;
-  text-align: center;
-  font-size: 0.844rem;
-  color: var(--text-3);
-  border: 1px solid var(--border);
-  border-radius: var(--radius);
-  background: #fff;
-}
 </style>
diff --git a/frontend/src/pages/relay/ProjectListPage.vue b/frontend/src/pages/relay/ProjectListPage.vue
index cfd4cbc..f42a8d8 100644
--- a/frontend/src/pages/relay/ProjectListPage.vue
+++ b/frontend/src/pages/relay/ProjectListPage.vue
@@ -6,6 +6,8 @@ import { RouterLink } from 'vue-router'
 import AppShell from '@/layouts/AppShell.vue'
 import UserAvatar from '@/components/UserAvatar.vue'
 import DropdownSelect from '@/components/DropdownSelect.vue'
+import LoadMore from '@/components/common/LoadMore.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
 import { useProjectStore } from '@/stores/project.store'
 import type { ProjectListQuery, ProjectSort } from '@/types/project'
 
@@ -203,30 +205,20 @@ const isFiltered = computed(() => keyword.value.trim() !== '')
         </RouterLink>
 
         <!-- 로딩 / 빈 상태 -->
-        <div
-          v-if="loading && projects.length === 0"
-          class="list-empty"
-        >
+        <EmptyState v-if="loading && projects.length === 0">
           불러오는 중…
-        </div>
-        <div
-          v-else-if="projects.length === 0"
-          class="list-empty"
-        >
+        </EmptyState>
+        <EmptyState v-else-if="projects.length === 0">
           {{ isFiltered ? '검색 결과가 없습니다.' : '아직 프로젝트가 없습니다. 새 프로젝트를 만들어 보세요.' }}
-        </div>
+        </EmptyState>
       </div>
 
       <!-- 더보기 -->
-      <button
+      <LoadMore
         v-if="hasMore"
-        class="load-more"
-        type="button"
-        :disabled="loadingMore"
-        @click="projectStore.loadMore()"
-      >
-        {{ loadingMore ? '불러오는 중…' : '더보기' }}
-      </button>
+        :loading="loadingMore"
+        @load="projectStore.loadMore()"
+      />
     </div>
   </AppShell>
 </template>
@@ -371,10 +363,4 @@ const isFiltered = computed(() => keyword.value.trim() !== '')
   width: 1.125rem;
   height: 1.125rem;
 }
-.list-empty {
-  padding: 2.5rem 1.25rem;
-  text-align: center;
-  color: var(--text-3);
-  font-size: 0.844rem;
-}
 </style>
diff --git a/frontend/src/pages/relay/ProjectMembersPage.vue b/frontend/src/pages/relay/ProjectMembersPage.vue
index b622133..c286dfa 100644
--- a/frontend/src/pages/relay/ProjectMembersPage.vue
+++ b/frontend/src/pages/relay/ProjectMembersPage.vue
@@ -7,6 +7,9 @@ import ProjectHeader from '@/components/ProjectHeader.vue'
 import ProjectTabs from '@/components/ProjectTabs.vue'
 import UserAvatar from '@/components/UserAvatar.vue'
 import DropdownSelect from '@/components/DropdownSelect.vue'
+import BaseModal from '@/components/common/BaseModal.vue'
+import SegmentedTabs from '@/components/common/SegmentedTabs.vue'
+import EmptyState from '@/components/common/EmptyState.vue'
 import { useProjectStore } from '@/stores/project.store'
 import { useMemberStore } from '@/stores/member.store'
 import { useUser } from '@/composables/useUser'
@@ -70,6 +73,15 @@ const counts = computed(() => ({
   member: members.value.filter((m) => m.roleType === 'member').length,
 }))
 
+// 역할 필터 세그먼트 옵션(수량 포함)
+const filterOptions = computed<{ value: RoleFilter; label: string; count: number }[]>(
+  () => [
+    { value: 'all', label: '전체', count: counts.value.all },
+    { value: 'admin', label: '관리자', count: counts.value.admin },
+    { value: 'member', label: '멤버', count: counts.value.member },
+  ],
+)
+
 const filteredMembers = computed(() =>
   members.value.filter((m) => {
     const matchRole = filter.value === 'all' || m.roleType === filter.value
@@ -285,26 +297,10 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
             placeholder="이름·이메일 검색…"
           >
         </div>
-        <div class="segmented">
-          <button
-            :class="{ active: filter === 'all' }"
-            @click="filter = 'all'"
-          >
-            전체 <span class="n">{{ counts.all }}</span>
-          </button>
-          <button
-            :class="{ active: filter === 'admin' }"
-            @click="filter = 'admin'"
-          >
-            관리자 <span class="n">{{ counts.admin }}</span>
-          </button>
-          <button
-            :class="{ active: filter === 'member' }"
-            @click="filter = 'member'"
-          >
-            멤버 <span class="n">{{ counts.member }}</span>
-          </button>
-        </div>
+        <SegmentedTabs
+          v-model="filter"
+          :options="filterOptions"
+        />
         <button
           v-if="isAdmin"
           class="btn primary invite"
@@ -330,18 +326,12 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
       </div>
 
       <!-- 멤버 목록 -->
-      <div
-        v-if="loading"
-        class="state-msg"
-      >
+      <EmptyState v-if="loading">
         멤버를 불러오는 중…
-      </div>
-      <div
-        v-else-if="filteredMembers.length === 0"
-        class="state-msg"
-      >
+      </EmptyState>
+      <EmptyState v-else-if="filteredMembers.length === 0">
         표시할 멤버가 없습니다.
-      </div>
+      </EmptyState>
       <div
         v-else
         class="list"
@@ -466,134 +456,109 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
     </div>
 
     <!-- 멤버 초대 모달 -->
-    <Teleport to="body">
-      <div
-        class="modal-backdrop"
-        :class="{ open: showInvite }"
-        @click.self="showInvite = false"
-      >
-        <div
-          class="invite-modal"
-          role="dialog"
-          aria-modal="true"
-        >
-          <div class="modal-head">
-            <div>
-              <h2>멤버 초대</h2>
-              <div class="mh-sub">
-                <b>{{ repo?.name }}</b> 프로젝트에 멤버를 추가합니다.
-              </div>
-            </div>
-            <button
-              class="modal-close"
-              type="button"
-              @click="showInvite = false"
-            >
-              <svg
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                stroke-width="2"
-                stroke-linecap="round"
-                stroke-linejoin="round"
-              ><path d="M18 6 6 18M6 6l12 12" /></svg>
-            </button>
-          </div>
-          <form
-            class="modal-body"
-            @submit.prevent="submitInvite"
-          >
-            <div class="m-field uc-field">
-              <label class="m-label">초대할 사람 (이메일)</label>
-              <input
-                v-model="inviteEmail"
-                class="m-input"
-                type="email"
-                placeholder="가입된 사용자의 이메일 입력…"
-                autocomplete="off"
-                @focus="onEmailFocus"
-                @input="onEmailInput"
-                @blur="onEmailBlur"
-              >
-              <!-- 사용자 자동완성 드롭다운 -->
-              <div
-                v-if="showUserDropdown"
-                class="user-dd"
-              >
-                <div
-                  v-if="usersLoading"
-                  class="user-dd-msg"
-                >
-                  불러오는 중…
-                </div>
-                <template v-else>
-                  <button
-                    v-for="u in userOptions"
-                    :key="u.id"
-                    type="button"
-                    class="user-dd-item"
-                    @mousedown.prevent="selectUser(u)"
-                  >
-                    <span class="avatar user-av"><UserAvatar
-                      :url="u.avatarUrl"
-                      :name="u.name"
-                    /></span>
-                    <span class="user-nm">{{ u.name }}</span>
-                    <span class="user-em">{{ u.email }}</span>
-                  </button>
-                  <div
-                    v-if="userOptions.length === 0"
-                    class="user-dd-msg"
-                  >
-                    {{ inviteEmail.trim() ? '일치하는 사용자가 없습니다.' : '초대할 수 있는 사용자가 없습니다.' }}
-                  </div>
-                </template>
-              </div>
-            </div>
+    <BaseModal
+      v-if="showInvite"
+      title="멤버 초대"
+      @close="closeInvite"
+    >
+      <template #subtitle>
+        <b>{{ repo?.name }}</b> 프로젝트에 멤버를 추가합니다.
+      </template>
 
-            <div class="m-field">
-              <label class="m-label">역할</label>
-              <DropdownSelect
-                v-model="inviteRole"
-                :options="ROLE_OPTIONS"
-                block
-                class="role-select"
-                aria-label="역할"
-              />
-            </div>
-            <div class="role-hint">
-              <b>멤버</b>는 담당자로 배정되어 업무를 수행하고, <b>관리자</b>는 업무 지시와 멤버 관리도 할 수 있습니다.
-            </div>
-          </form>
-          <div class="modal-foot">
-            <span class="fnote">이미 가입된 사용자만 초대할 수 있습니다.</span>
-            <button
-              class="mbtn"
-              type="button"
-              @click="closeInvite"
+      <form
+        class="invite-body"
+        @submit.prevent="submitInvite"
+      >
+        <div class="form-field uc-field">
+          <label class="form-label">초대할 사람 (이메일)</label>
+          <input
+            v-model="inviteEmail"
+            class="form-input"
+            type="email"
+            placeholder="가입된 사용자의 이메일 입력…"
+            autocomplete="off"
+            @focus="onEmailFocus"
+            @input="onEmailInput"
+            @blur="onEmailBlur"
+          >
+          <!-- 사용자 자동완성 드롭다운 -->
+          <div
+            v-if="showUserDropdown"
+            class="user-dd"
+          >
+            <div
+              v-if="usersLoading"
+              class="user-dd-msg"
             >
-              취소
-            </button>
-            <button
-              class="mbtn primary"
-              type="button"
-              :disabled="!canSubmitInvite"
-              @click="submitInvite"
-            >
-              <svg
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                stroke-width="2.2"
-                stroke-linecap="round"
-                stroke-linejoin="round"
-              ><path d="m22 2-7 20-4-9-9-4Z" /><path d="M22 2 11 13" /></svg>
-              {{ inviteBusy ? '초대 중…' : '초대 보내기' }}
-            </button>
+              불러오는 중…
+            </div>
+            <template v-else>
+              <button
+                v-for="u in userOptions"
+                :key="u.id"
+                type="button"
+                class="user-dd-item"
+                @mousedown.prevent="selectUser(u)"
+              >
+                <span class="avatar user-av"><UserAvatar
+                  :url="u.avatarUrl"
+                  :name="u.name"
+                /></span>
+                <span class="user-nm">{{ u.name }}</span>
+                <span class="user-em">{{ u.email }}</span>
+              </button>
+              <div
+                v-if="userOptions.length === 0"
+                class="user-dd-msg"
+              >
+                {{ inviteEmail.trim() ? '일치하는 사용자가 없습니다.' : '초대할 수 있는 사용자가 없습니다.' }}
+              </div>
+            </template>
           </div>
         </div>
-      </div>
-    </Teleport>
+
+        <div class="form-field">
+          <label class="form-label">역할</label>
+          <DropdownSelect
+            v-model="inviteRole"
+            :options="ROLE_OPTIONS"
+            block
+            class="role-select"
+            aria-label="역할"
+          />
+          <div class="role-hint">
+            <b>멤버</b>는 담당자로 배정되어 업무를 수행하고, <b>관리자</b>는 업무 지시와 멤버 관리도 할 수 있습니다.
+          </div>
+        </div>
+      </form>
+
+      <template #foot>
+        <span class="fnote">이미 가입된 사용자만 초대할 수 있습니다.</span>
+        <button
+          class="mbtn"
+          type="button"
+          @click="closeInvite"
+        >
+          취소
+        </button>
+        <button
+          class="mbtn primary"
+          type="button"
+          :disabled="!canSubmitInvite"
+          @click="submitInvite"
+        >
+          <svg
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            stroke-width="2.2"
+            stroke-linecap="round"
+            stroke-linejoin="round"
+          ><path d="m22 2-7 20-4-9-9-4Z" /><path d="M22 2 11 13" /></svg>
+          {{ inviteBusy ? '초대 중…' : '초대 보내기' }}
+        </button>
+      </template>
+    </BaseModal>
   </AppShell>
 </template>
 
@@ -800,15 +765,6 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
 }
 
 /* 로딩/빈 상태 메시지 */
-.state-msg {
-  padding: 2.5rem 1.125rem;
-  text-align: center;
-  font-size: 0.844rem;
-  color: var(--text-3);
-  border: 1px solid var(--border);
-  border-radius: var(--radius);
-  background: #fff;
-}
 
 /* 역할 변경 드롭다운 */
 /* 전역 .list 의 overflow:hidden 이 드롭다운을 잘라내므로, 이 화면에서는 보이도록 해제.
@@ -867,73 +823,17 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
 
 <!-- 초대 모달은 Teleport 로 body 에 렌더되므로 비-scoped 전역 스타일 -->
 <style>
-.invite-modal {
-  width: 100%;
-  max-width: 32.75rem;
-  background: #fff;
-  border-radius: 0.875rem;
-  box-shadow: 0 24px 64px rgba(20, 24, 33, 0.32);
-  /* overflow:hidden 제거 — 자동완성 드롭다운이 모달 밖으로 넘쳐도 잘리지 않도록 */
+/* 멤버 초대 모달 — 셸/헤더/푸터/필드는 BaseModal + 전역 .form-* 사용.
+   본문 폼은 display:contents 로 BaseModal 본문 간격을 상속받고,
+   고유 요소(자동완성 드롭다운/역할 힌트/푸터 노트)만 여기서 정의.
+   (BaseModal 이 body 로 Teleport 하므로 비-scoped 전역 스타일) */
+.invite-body {
+  display: contents;
 }
-.invite-modal .modal-head {
-  display: flex;
-  align-items: flex-start;
-  gap: 0.75rem;
-  padding: 1.375rem 1.5rem 1rem;
-}
-.invite-modal .modal-head h2 {
-  font-size: 1.125rem;
-  font-weight: 700;
-  letter-spacing: -0.01875rem;
-}
-.invite-modal .mh-sub {
-  font-size: 0.8125rem;
-  color: var(--text-2);
-  margin-top: 0.25rem;
-}
-.invite-modal .mh-sub b {
-  color: var(--text-2);
-  font-weight: 600;
-}
-.invite-modal .modal-close {
-  margin-left: auto;
-  width: 2rem;
-  height: 2rem;
-  border: none;
-  background: transparent;
-  color: var(--text-3);
-  border-radius: var(--radius-sm);
-  display: grid;
-  place-items: center;
-  cursor: pointer;
-  flex-shrink: 0;
-}
-.invite-modal .modal-close:hover {
-  background: #f1f2f4;
-  color: var(--text);
-}
-.invite-modal .modal-close svg {
-  width: 1.125rem;
-  height: 1.125rem;
-}
-.invite-modal .modal-body {
-  padding: 0.25rem 1.5rem 0.5rem;
-  /* 전역 .modal-body(text-align:center) 상속 차단 — 폼은 좌측 정렬 */
-  text-align: left;
-}
-/* 모달 입력 필드(이메일/역할) — 세로 스택, 전체 너비 */
-.invite-modal .m-field {
-  margin-top: 1.125rem;
-}
-.invite-modal .m-field:first-child {
-  margin-top: 0;
-}
-
-/* 사용자 자동완성 드롭다운 */
-.invite-modal .uc-field {
+.invite-body .uc-field {
   position: relative;
 }
-.invite-modal .user-dd {
+.invite-body .user-dd {
   position: absolute;
   top: calc(100% + 0.375rem);
   left: 0;
@@ -947,7 +847,7 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
   max-height: 16rem;
   overflow-y: auto;
 }
-.invite-modal .user-dd-item {
+.invite-body .user-dd-item {
   display: flex;
   align-items: center;
   gap: 0.625rem;
@@ -960,22 +860,22 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
   font-family: inherit;
   text-align: left;
 }
-.invite-modal .user-dd-item:hover {
+.invite-body .user-dd-item:hover {
   background: #f5f6f8;
 }
-.invite-modal .user-av {
+.invite-body .user-av {
   width: 1.625rem;
   height: 1.625rem;
   font-size: 0.6875rem;
   flex-shrink: 0;
 }
-.invite-modal .user-nm {
+.invite-body .user-nm {
   font-size: 0.8125rem;
   font-weight: 600;
   color: var(--text);
   white-space: nowrap;
 }
-.invite-modal .user-em {
+.invite-body .user-em {
   font-size: 0.75rem;
   color: var(--text-3);
   margin-left: auto;
@@ -985,111 +885,32 @@ onUnmounted(() => window.removeEventListener('keydown', onKeydown))
   max-width: 14rem;
   padding-left: 0.5rem;
 }
-.invite-modal .user-dd-msg {
+.invite-body .user-dd-msg {
   padding: 0.75rem 0.5rem;
   font-size: 0.781rem;
   color: var(--text-3);
   text-align: center;
 }
-.invite-modal .m-label {
-  font-size: 0.781rem;
-  font-weight: 600;
-  color: var(--text-2);
-  margin-bottom: 0.5rem;
-  display: block;
-}
-.invite-modal .m-label .muted {
-  color: var(--text-3);
-  font-weight: 500;
-}
 /* 역할 선택 드롭다운(DropdownSelect) — 모달 폼 입력 높이/서체에 맞춤 */
-.invite-modal .role-select :deep(.dd-trigger) {
+.invite-body .role-select .dd-trigger {
   height: 2.5rem;
   font-size: 0.844rem;
   font-weight: 600;
   color: var(--text);
 }
-.invite-modal .m-input {
-  width: 100%;
-  height: 2.5rem;
-  border: 1px solid var(--border-strong);
-  border-radius: var(--radius);
-  padding: 0 0.75rem;
-  font-family: inherit;
-  font-size: 0.844rem;
-  color: var(--text);
-  background: #fff;
-}
-.invite-modal .m-input:focus {
-  outline: none;
-  border-color: var(--accent);
-  box-shadow: 0 0 0 3px var(--accent-weak);
-}
-.invite-modal .m-input::placeholder {
-  color: var(--text-3);
-}
-.invite-modal .role-hint {
+.invite-body .role-hint {
   font-size: 0.75rem;
   color: var(--text-3);
-  margin-top: 0.5rem;
   line-height: 1.5;
 }
-.invite-modal .role-hint b {
+.invite-body .role-hint b {
   color: var(--text-2);
   font-weight: 600;
 }
-.invite-modal .modal-foot {
-  display: flex;
-  align-items: center;
-  gap: 0.5625rem;
-  padding: 1rem 1.5rem;
-  border-top: 1px solid var(--border);
-  background: #fafbfc;
-  margin-top: 1rem;
-  /* overflow:hidden 제거에 따른 하단 라운드 보정 */
-  border-radius: 0 0 0.875rem 0.875rem;
-}
-.invite-modal .modal-foot .fnote {
+/* 푸터 좌측 안내 문구(BaseModal 푸터 슬롯) */
+.fnote {
   font-size: 0.75rem;
   color: var(--text-3);
   margin-right: auto;
 }
-.invite-modal .mbtn {
-  /* 전역 .mbtn(flex:1, 확인 다이얼로그용) 상속 차단 — 버튼은 내용 너비로 우측 정렬 */
-  flex: 0 0 auto;
-  height: 2.375rem;
-  padding: 0 1rem;
-  border-radius: var(--radius);
-  font-size: 0.844rem;
-  font-weight: 600;
-  border: 1px solid var(--border-strong);
-  background: #fff;
-  color: var(--text-2);
-  cursor: pointer;
-  display: inline-flex;
-  align-items: center;
-  gap: 0.375rem;
-  font-family: inherit;
-}
-.invite-modal .mbtn:hover {
-  background: #f1f2f4;
-  color: var(--text);
-}
-.invite-modal .mbtn.primary {
-  background: var(--accent);
-  border-color: var(--accent);
-  color: #fff;
-  box-shadow: 0 1px 2px rgba(79, 70, 229, 0.4);
-}
-.invite-modal .mbtn.primary:hover {
-  background: var(--accent-hover);
-}
-.invite-modal .mbtn:disabled {
-  opacity: 0.55;
-  cursor: not-allowed;
-}
-.invite-modal .mbtn svg {
-  width: 0.9375rem;
-  height: 0.9375rem;
-}
 </style>
diff --git a/frontend/src/pages/relay/TaskDetailPage.vue b/frontend/src/pages/relay/TaskDetailPage.vue
index 8899b43..5554123 100644
--- a/frontend/src/pages/relay/TaskDetailPage.vue
+++ b/frontend/src/pages/relay/TaskDetailPage.vue
@@ -31,6 +31,10 @@ import { useDialog } from '@/composables/useDialog'
 import UserAvatar from '@/components/UserAvatar.vue'
 import StatusSelect from '@/components/StatusSelect.vue'
 import { attachmentKindOf, fileBadge } from '@/shared/utils/format'
+import {
+  WORK_STATUS_META,
+  WORK_STATUS_ORDER,
+} from '@/shared/constants/workStatus'
 
 const route = useRoute()
 const router = useRouter()
@@ -302,16 +306,7 @@ const isAssignee = computed(
 /* ============================================================
  * 중간 점검(체크포인트) — 작업자가 점검일 당일에 보고서로 전송, 지시자는 기록 열람
  * ============================================================ */
-const WORK_STATUS_ORDER: ChecklistWorkStatus[] = ['todo', 'doing', 'done']
-// 진행 상태 표시 메타(라벨/색/약색)
-const WORK_STATUS_META: Record<
-  ChecklistWorkStatus,
-  { label: string; color: string; weak: string }
-> = {
-  todo: { label: '대기', color: '#9298a3', weak: '#eef0f2' },
-  doing: { label: '진행 중', color: '#2563eb', weak: '#e9f0fd' },
-  done: { label: '완료', color: '#1f9d57', weak: '#e7f5ed' },
-}
+// 진행 상태 메타/순서는 공용 SSOT(shared/constants/workStatus) 사용
 // 카테고리 색(탭/그룹 dot)
 const CAT_COLOR: Record<ChecklistCategory, string> = {
   필수: '#2563eb',
diff --git a/frontend/src/shared/constants/workStatus.ts b/frontend/src/shared/constants/workStatus.ts
new file mode 100644
index 0000000..e6419f1
--- /dev/null
+++ b/frontend/src/shared/constants/workStatus.ts
@@ -0,0 +1,18 @@
+import type { ChecklistWorkStatus } from '@/mock/relay.mock'
+
+// 작업자 진행상태(대기/진행 중/완료) 라벨·색 — 단일 진실 공급원(SSOT).
+// StatusSelect(드롭다운)·업무 상세(보고서)에서 공통 사용한다.
+export interface WorkStatusMeta {
+  label: string
+  color: string
+  weak: string
+}
+
+export const WORK_STATUS_META: Record<ChecklistWorkStatus, WorkStatusMeta> = {
+  todo: { label: '대기', color: '#9298a3', weak: '#eef0f2' },
+  doing: { label: '진행 중', color: '#2563eb', weak: '#e9f0fd' },
+  done: { label: '완료', color: '#1f9d57', weak: '#e7f5ed' },
+}
+
+// 표시 순서(대기 → 진행 중 → 완료)
+export const WORK_STATUS_ORDER: ChecklistWorkStatus[] = ['todo', 'doing', 'done']
diff --git a/frontend/src/shared/utils/format.ts b/frontend/src/shared/utils/format.ts
index e744e95..323c0d8 100644
--- a/frontend/src/shared/utils/format.ts
+++ b/frontend/src/shared/utils/format.ts
@@ -101,7 +101,7 @@ const WEEKDAYS_KO = ['일', '월', '화', '수', '목', '금', '토']
 
 /** 업무 상태 → 한국어 라벨 */
 const TASK_STATUS_LABEL: Record<TaskStatus, string> = {
-  todo: '할 일',
+  todo: '대기',
   prog: '진행 중',
   review: '승인 대기',
   done: '완료',