first commit

2026-06-22 15:04:28 +09:00
commit 70cf3e9e9c
@@ -0,0 +1,4 @@
+# Optional: custom TURN server (comma-separated URLs)
+# VITE_TURN_URLS=turn:your.server:3478,turn:your.server:3478?transport=tcp
+# VITE_TURN_USERNAME=your-username
+# VITE_TURN_CREDENTIAL=your-credential
@@ -0,0 +1,4 @@
+.DS_Store
+node_modules
+dist
+.env
@@ -0,0 +1,42 @@
+# tabletop-web
+
+This template should help get you started developing with Vue 3 in Vite.
+
+## Recommended IDE Setup
+
+[VS Code](https://code.visualstudio.com/) + [Vue (Official)](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
+
+## Recommended Browser Setup
+
+- Chromium-based browsers (Chrome, Edge, Brave, etc.):
+  - [Vue.js devtools](https://chromewebstore.google.com/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd)
+  - [Turn on Custom Object Formatter in Chrome DevTools](http://bit.ly/object-formatters)
+- Firefox:
+  - [Vue.js devtools](https://addons.mozilla.org/en-US/firefox/addon/vue-js-devtools/)
+  - [Turn on Custom Object Formatter in Firefox DevTools](https://fxdx.dev/firefox-devtools-custom-object-formatters/)
+
+## Type Support for `.vue` Imports in TS
+
+TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) to make the TypeScript language service aware of `.vue` types.
+
+## Customize configuration
+
+See [Vite Configuration Reference](https://vite.dev/config/).
+
+## Project Setup
+
+```sh
+npm install
+```
+
+### Compile and Hot-Reload for Development
+
+```sh
+npm run dev
+```
+
+### Type-Check, Compile and Minify for Production
+
+```sh
+npm run build
+```
@@ -0,0 +1,11 @@
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_TURN_URLS?: string
+  readonly VITE_TURN_USERNAME?: string
+  readonly VITE_TURN_CREDENTIAL?: string
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv
+}
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="">
+  <head>
+    <meta charset="UTF-8">
+    <link rel="icon" href="/favicon.ico">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
+    <title>Tabletop - 보드게임 시뮬레이터</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>
@@ -0,0 +1,33 @@
+{
+  "name": "tabletop-web",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --host",
+    "build": "run-p type-check \"build-only {@}\" --",
+    "preview": "vite preview",
+    "build-only": "vite build",
+    "type-check": "vue-tsc --build"
+  },
+  "dependencies": {
+    "peerjs": "^1.5.5",
+    "pinia": "^3.0.4",
+    "vue": "^3.5.38",
+    "vue-router": "^5.1.0"
+  },
+  "devDependencies": {
+    "@tsconfig/node24": "^24.0.4",
+    "@types/node": "^24.13.2",
+    "@vitejs/plugin-vue": "^6.0.7",
+    "@vue/tsconfig": "^0.9.1",
+    "npm-run-all2": "^9.0.2",
+    "typescript": "~6.0.0",
+    "vite": "^8.0.16",
+    "vite-plugin-vue-devtools": "^8.1.2",
+    "vue-tsc": "^3.3.5"
+  },
+  "engines": {
+    "node": "^22.18.0 || >=24.12.0"
+  }
+}
@@ -0,0 +1,62 @@
+<script setup lang="ts"></script>
+
+<template>
+  <router-view />
+</template>
+
+<style>
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  background: #1a1a2e;
+  color: #eee;
+  min-height: 100vh;
+  min-height: 100dvh;
+  overflow: hidden;
+  touch-action: manipulation;
+  user-select: none;
+  -webkit-user-select: none;
+  -webkit-touch-callout: none;
+}
+
+#app {
+  min-height: 100vh;
+  min-height: 100dvh;
+  user-select: none;
+  -webkit-user-select: none;
+}
+
+/* 입력·복사가 필요한 곳만 텍스트 선택 허용 */
+input,
+textarea,
+select,
+[contenteditable='true'],
+.selectable {
+  user-select: text;
+  -webkit-user-select: text;
+}
+
+img,
+svg {
+  -webkit-user-drag: none;
+  user-drag: none;
+}
+
+button,
+a,
+[role='button'] {
+  touch-action: manipulation;
+  cursor: pointer;
+  -webkit-appearance: none;
+  appearance: none;
+  font: inherit;
+  color: inherit;
+}
+</style>
@@ -0,0 +1,312 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import type { BoardCorner } from '@/utils/boardLayout'
+import OpponentHandFan from './OpponentHandFan.vue'
+
+const props = withDefaults(defineProps<{
+  corner: BoardCorner
+  playerName: string
+  handCount: number
+  isTurn?: boolean
+  previewIndex?: number | null
+  showDraw?: boolean
+  drawDisabled?: boolean
+}>(), {
+  isTurn: false,
+  previewIndex: null,
+  showDraw: false,
+  drawDisabled: false,
+})
+
+const emit = defineEmits<{
+  draw: []
+}>()
+
+const fanPosition = computed((): 'top' | 'bottom' => (
+  props.corner === 'top' ? 'top' : 'bottom'
+))
+
+const large = computed(() => props.corner === 'top' || props.corner === 'bottom')
+</script>
+
+<template>
+  <div class="corner-zone" :class="[`corner-${corner}`, { 'is-turn': isTurn }]">
+    <!--
+      배치 기준: 각 모서리에 앉아 테이블 중앙을 바라볼 때
+      - 패 좌측 = 이름
+      - 패 우측 = 카드뽑기
+      - 패 상단 = 테이블 쪽 가장자리
+    -->
+    <div class="corner-content">
+      <!-- 아래: [뽑기][이름][패] -->
+      <template v-if="corner === 'bottom'">
+        <button
+          v-if="showDraw"
+          type="button"
+          class="draw-btn"
+          :class="{ 'is-turn': isTurn }"
+          :disabled="drawDisabled"
+          @click="emit('draw')"
+        >
+          {{ playerName }} 카드뽑기
+        </button>
+        <div class="fan-row">
+          <span class="player-name" :class="{ 'is-turn': isTurn }">{{ playerName }}</span>
+          <div class="corner-inner">
+            <OpponentHandFan
+              :count="handCount"
+              :position="fanPosition"
+              :is-turn="isTurn"
+              :preview-index="previewIndex"
+              :large="large"
+              compact
+            />
+          </div>
+        </div>
+      </template>
+
+      <!-- 위: [패][이름][뽑기] -->
+      <template v-else-if="corner === 'top'">
+        <div class="fan-row">
+          <div class="corner-inner">
+            <OpponentHandFan
+              :count="handCount"
+              :position="fanPosition"
+              :is-turn="isTurn"
+              :preview-index="previewIndex"
+              :large="large"
+              compact
+            />
+          </div>
+          <span class="player-name" :class="{ 'is-turn': isTurn }">{{ playerName }}</span>
+        </div>
+        <button
+          v-if="showDraw"
+          type="button"
+          class="draw-btn"
+          :class="{ 'is-turn': isTurn }"
+          :disabled="drawDisabled"
+          @click="emit('draw')"
+        >
+          {{ playerName }} 카드뽑기
+        </button>
+      </template>
+
+      <!-- 왼쪽: [뽑기][패][이름] — 좌측=아래, 우측=위 -->
+      <template v-else-if="corner === 'left'">
+        <div class="sideways-stack">
+          <button
+            v-if="showDraw"
+            type="button"
+            class="draw-btn"
+            :class="{ 'is-turn': isTurn }"
+            :disabled="drawDisabled"
+            @click="emit('draw')"
+          >
+            {{ playerName }} 카드뽑기
+          </button>
+          <div class="sideways-fan-slot">
+            <div class="corner-inner sideways side-left">
+              <OpponentHandFan
+                :count="handCount"
+                :position="fanPosition"
+                :is-turn="isTurn"
+                :preview-index="previewIndex"
+                compact
+              />
+            </div>
+          </div>
+          <span class="player-name" :class="{ 'is-turn': isTurn }">{{ playerName }}</span>
+        </div>
+      </template>
+
+      <!-- 오른쪽: [이름][패][뽑기] — 좌측=위, 우측=아래 -->
+      <template v-else>
+        <div class="sideways-stack">
+          <span class="player-name" :class="{ 'is-turn': isTurn }">{{ playerName }}</span>
+          <div class="sideways-fan-slot">
+            <div class="corner-inner sideways side-right">
+              <OpponentHandFan
+                :count="handCount"
+                :position="fanPosition"
+                :is-turn="isTurn"
+                :preview-index="previewIndex"
+                compact
+              />
+            </div>
+          </div>
+          <button
+            v-if="showDraw"
+            type="button"
+            class="draw-btn"
+            :class="{ 'is-turn': isTurn }"
+            :disabled="drawDisabled"
+            @click="emit('draw')"
+          >
+            {{ playerName }} 카드뽑기
+          </button>
+        </div>
+      </template>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.corner-zone {
+  min-width: 0;
+}
+
+.corner-top { grid-area: top; justify-self: center; }
+.corner-bottom { grid-area: bottom; justify-self: center; }
+.corner-left { grid-area: left; align-self: center; justify-self: start; }
+.corner-right { grid-area: right; align-self: center; justify-self: end; }
+
+.corner-content {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 6px;
+}
+
+.fan-row {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  gap: 2px;
+  min-width: 0;
+}
+
+.player-name {
+  font-size: 0.85rem;
+  font-weight: 600;
+  color: #aaa;
+  white-space: nowrap;
+  flex-shrink: 0;
+  line-height: 1;
+}
+
+.corner-top .player-name,
+.corner-bottom .player-name {
+  font-size: 1.05rem;
+}
+
+.player-name.is-turn {
+  color: #f1c40f;
+}
+
+/* 모서리에서 중앙을 바라볼 때 정방향 */
+.corner-top .player-name {
+  transform: rotate(180deg);
+}
+
+.corner-left .player-name {
+  transform: rotate(90deg);
+}
+
+.corner-right .player-name {
+  transform: rotate(-90deg);
+}
+
+.sideways-stack {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 10px;
+}
+
+.sideways-fan-slot {
+  /* 회전 후 패가 차지하는 영역(280×120)을 분리해 이름·버튼과 겹치지 않게 */
+  width: 140px;
+  height: 300px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  position: relative;
+  z-index: 1;
+}
+
+.corner-left .draw-btn,
+.corner-left .player-name,
+.corner-right .draw-btn,
+.corner-right .player-name {
+  position: relative;
+  z-index: 350;
+}
+
+.corner-inner.side-left.sideways {
+  transform: rotate(90deg);
+  width: 280px;
+  flex-shrink: 0;
+}
+
+.corner-inner.side-right.sideways {
+  transform: rotate(-90deg);
+  width: 280px;
+  flex-shrink: 0;
+}
+
+.corner-inner.sideways :deep(.fan) {
+  width: min(100%, 280px);
+  height: 100px;
+}
+
+.draw-btn {
+  padding: 8px 14px;
+  border-radius: 18px;
+  border: 2px solid #444;
+  background: rgba(42, 42, 74, 0.9);
+  color: #ccc;
+  font-size: 0.8rem;
+  font-weight: 600;
+  cursor: pointer;
+  white-space: nowrap;
+  flex-shrink: 0;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.draw-btn.is-turn {
+  border-color: #f1c40f;
+  background: rgba(241, 196, 15, 0.15);
+  color: #f1c40f;
+}
+
+.draw-btn:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
+
+.corner-top .draw-btn {
+  transform: rotate(180deg);
+}
+
+.corner-top .draw-btn:active:not(:disabled) {
+  transform: rotate(180deg) scale(0.97);
+}
+
+.corner-bottom .draw-btn:active:not(:disabled) {
+  transform: scale(0.97);
+}
+
+.corner-left .draw-btn {
+  transform: rotate(90deg);
+}
+
+.corner-left .draw-btn:active:not(:disabled) {
+  transform: rotate(90deg) scale(0.97);
+}
+
+.corner-right .draw-btn {
+  transform: rotate(-90deg);
+}
+
+.corner-right .draw-btn:active:not(:disabled) {
+  transform: rotate(-90deg) scale(0.97);
+}
+
+.corner-left .draw-btn,
+.corner-right .draw-btn {
+  font-size: 0.75rem;
+  padding: 6px 10px;
+}
+</style>
@@ -0,0 +1,360 @@
+<script setup lang="ts">
+import { computed, onUnmounted, ref } from 'vue'
+import {
+  CORNERS_CLOCKWISE,
+  CORNER_LABELS,
+  dropPlayerOnCorner,
+  dropPlayerOnPool,
+  type BoardCorner,
+  type SeatMap,
+} from '@/utils/boardLayout'
+
+const props = defineProps<{
+  seats: SeatMap
+  players: { id: string; name: string }[]
+}>()
+
+const emit = defineEmits<{
+  'update:seats': [seats: SeatMap]
+}>()
+
+type DropZone = BoardCorner | 'pool'
+type DragSource = DropZone
+
+interface DragState {
+  playerId: string
+  from: DragSource
+}
+
+const dragging = ref<DragState | null>(null)
+const hoverZone = ref<DropZone | null>(null)
+const ghostPos = ref({ x: 0, y: 0 })
+
+const assignedIds = computed(() => new Set(
+  CORNERS_CLOCKWISE.map((c) => props.seats[c]).filter(Boolean) as string[],
+))
+
+const unassignedPlayers = computed(() =>
+  props.players.filter((p) => !assignedIds.value.has(p.id)),
+)
+
+function playerAt(corner: BoardCorner) {
+  const id = props.seats[corner]
+  return props.players.find((p) => p.id === id) ?? null
+}
+
+function playerName(playerId: string) {
+  return props.players.find((p) => p.id === playerId)?.name ?? ''
+}
+
+function zoneFromElement(el: Element | null): DropZone | null {
+  const zone = el?.closest('[data-seat-drop]') as HTMLElement | null
+  if (!zone) return null
+  const value = zone.dataset.seatDrop
+  if (value === 'pool') return 'pool'
+  if (CORNERS_CLOCKWISE.includes(value as BoardCorner)) return value as BoardCorner
+  return null
+}
+
+function updateHover(clientX: number, clientY: number) {
+  hoverZone.value = zoneFromElement(document.elementFromPoint(clientX, clientY))
+}
+
+function finishDrag(clientX: number, clientY: number) {
+  if (!dragging.value) return
+
+  const zone = zoneFromElement(document.elementFromPoint(clientX, clientY))
+  const { playerId, from } = dragging.value
+
+  if (zone && zone !== from) {
+    if (zone === 'pool') {
+      emit('update:seats', dropPlayerOnPool(props.seats, playerId))
+    } else {
+      emit('update:seats', dropPlayerOnCorner(props.seats, zone, playerId))
+    }
+  }
+
+  dragging.value = null
+  hoverZone.value = null
+}
+
+function onPointerMove(e: PointerEvent) {
+  if (!dragging.value) return
+  ghostPos.value = { x: e.clientX, y: e.clientY }
+  updateHover(e.clientX, e.clientY)
+}
+
+function onPointerUp(e: PointerEvent) {
+  finishDrag(e.clientX, e.clientY)
+  window.removeEventListener('pointermove', onPointerMove)
+  window.removeEventListener('pointerup', onPointerUp)
+  window.removeEventListener('pointercancel', onPointerUp)
+}
+
+function startDrag(e: PointerEvent, playerId: string, from: DragSource) {
+  if (e.button !== 0) return
+  e.preventDefault()
+
+  dragging.value = { playerId, from }
+  ghostPos.value = { x: e.clientX, y: e.clientY }
+  hoverZone.value = from
+
+  window.addEventListener('pointermove', onPointerMove)
+  window.addEventListener('pointerup', onPointerUp)
+  window.addEventListener('pointercancel', onPointerUp)
+}
+
+onUnmounted(() => {
+  window.removeEventListener('pointermove', onPointerMove)
+  window.removeEventListener('pointerup', onPointerUp)
+  window.removeEventListener('pointercancel', onPointerUp)
+})
+</script>
+
+<template>
+  <div class="seat-picker" :class="{ 'is-dragging': dragging }">
+    <p class="seat-hint">
+      가운데 플레이어를 드래그해 자리에 놓으세요. 이미 있는 자리면 서로 바뀝니다.
+    </p>
+
+    <div class="seat-table">
+      <div
+        v-for="corner in CORNERS_CLOCKWISE"
+        :key="corner"
+        class="seat-cell"
+        :class="[
+          `cell-${corner}`,
+          { 'drop-hover': hoverZone === corner && dragging?.from !== corner },
+        ]"
+        :data-seat-drop="corner"
+      >
+        <span class="corner-label">{{ CORNER_LABELS[corner] }}</span>
+        <div class="corner-slot">
+          <div
+            v-if="playerAt(corner)"
+            class="player-chip seated-chip"
+            :class="{ dragging: dragging?.playerId === playerAt(corner)!.id }"
+            @pointerdown="startDrag($event, playerAt(corner)!.id, corner)"
+          >
+            {{ playerAt(corner)!.name }}
+          </div>
+          <span v-else class="corner-empty">놓기</span>
+        </div>
+      </div>
+
+      <div
+        class="seat-center"
+        :class="{ 'drop-hover': hoverZone === 'pool' && dragging?.from !== 'pool' }"
+        data-seat-drop="pool"
+      >
+        <span class="table-label">미배치 {{ unassignedPlayers.length }}명</span>
+        <TransitionGroup name="pool-chip" tag="div" class="pool-slot">
+          <div
+            v-for="p in unassignedPlayers"
+            :key="p.id"
+            class="player-chip pool-chip"
+            :class="{ dragging: dragging?.playerId === p.id }"
+            @pointerdown="startDrag($event, p.id, 'pool')"
+          >
+            {{ p.name }}
+          </div>
+        </TransitionGroup>
+        <p v-if="unassignedPlayers.length === 0" class="pool-note">모두 자리에 배치됨</p>
+        <p v-else class="pool-note">여기로 끌어오면 자리에서 빠짐</p>
+      </div>
+    </div>
+
+    <Teleport to="body">
+      <div
+        v-if="dragging"
+        class="drag-ghost"
+        :style="{ left: `${ghostPos.x}px`, top: `${ghostPos.y}px` }"
+      >
+        {{ playerName(dragging.playerId) }}
+      </div>
+    </Teleport>
+  </div>
+</template>
+
+<style scoped>
+.seat-picker {
+  width: 100%;
+  max-width: 440px;
+  touch-action: pan-y;
+}
+
+.seat-picker.is-dragging {
+  touch-action: none;
+  user-select: none;
+}
+
+.seat-hint {
+  font-size: 0.85rem;
+  color: #888;
+  text-align: center;
+  margin-bottom: 12px;
+  line-height: 1.4;
+}
+
+.seat-table {
+  display: grid;
+  grid-template-areas:
+    ". top ."
+    "left center right"
+    ". bottom .";
+  grid-template-columns: 1fr auto 1fr;
+  gap: 8px;
+  padding: 12px;
+  background: rgba(42, 42, 74, 0.5);
+  border-radius: 12px;
+}
+
+.seat-cell,
+.seat-center {
+  border: 2px dashed #444;
+  border-radius: 10px;
+  background: rgba(26, 26, 46, 0.6);
+  transition: border-color 0.15s, background 0.15s;
+}
+
+.seat-cell.drop-hover,
+.seat-center.drop-hover {
+  border-color: #6c5ce7;
+  background: rgba(108, 92, 231, 0.12);
+}
+
+.seat-cell {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 6px;
+  padding: 10px 12px;
+  min-width: 96px;
+}
+
+.cell-top { grid-area: top; justify-self: center; }
+.cell-left { grid-area: left; align-self: center; }
+.cell-right { grid-area: right; align-self: center; }
+.cell-bottom { grid-area: bottom; justify-self: center; }
+
+.seat-center {
+  grid-area: center;
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  gap: 8px;
+  padding: 12px 14px;
+  min-width: 148px;
+  max-width: 200px;
+}
+
+.corner-label,
+.table-label {
+  font-size: 0.75rem;
+  color: #888;
+  text-align: center;
+}
+
+.table-label {
+  font-weight: 600;
+  color: #aaa;
+}
+
+.corner-slot,
+.pool-slot {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  gap: 6px;
+  min-height: 40px;
+  align-items: center;
+}
+
+.pool-slot {
+  flex-direction: column;
+  align-items: stretch;
+  max-height: 180px;
+  overflow-y: auto;
+}
+
+.player-chip {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 2px;
+  padding: 8px 12px;
+  border-radius: 10px;
+  border: 2px solid #444;
+  background: #2a2a4a;
+  color: #eee;
+  font-size: 0.85rem;
+  font-weight: 600;
+  cursor: grab;
+  touch-action: none;
+  -webkit-tap-highlight-color: transparent;
+  transition: opacity 0.15s, transform 0.15s, border-color 0.15s;
+}
+
+.player-chip:active {
+  cursor: grabbing;
+}
+
+.player-chip.dragging {
+  opacity: 0.35;
+}
+
+.seated-chip {
+  padding: 6px 10px;
+  font-size: 0.8rem;
+  width: 100%;
+  text-align: center;
+}
+
+.pool-chip {
+  width: 100%;
+  text-align: center;
+}
+
+.corner-empty {
+  color: #555;
+  font-size: 0.75rem;
+}
+
+.pool-note {
+  margin: 0;
+  font-size: 0.68rem;
+  color: #666;
+  text-align: center;
+  line-height: 1.3;
+}
+
+.drag-ghost {
+  position: fixed;
+  z-index: 9999;
+  pointer-events: none;
+  transform: translate(-50%, -50%);
+  padding: 8px 14px;
+  border-radius: 10px;
+  border: 2px solid #6c5ce7;
+  background: rgba(42, 42, 74, 0.95);
+  color: #fff;
+  font-size: 0.85rem;
+  font-weight: 600;
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
+}
+
+.pool-chip-enter-active,
+.pool-chip-leave-active {
+  transition: opacity 0.2s ease, transform 0.2s ease;
+}
+
+.pool-chip-enter-from,
+.pool-chip-leave-to {
+  opacity: 0;
+  transform: scale(0.9);
+}
+
+.pool-chip-move {
+  transition: transform 0.2s ease;
+}
+</style>
@@ -0,0 +1,291 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import type { Card, CardColor } from "@/games/onecard/types";
+import type { CardViewSize } from "@/components/cardTypes";
+import {
+  COLOR_STYLES,
+  getCardDisplayColor,
+  getCardLabel,
+} from "@/games/onecard/cardDisplay";
+
+const props = withDefaults(
+  defineProps<{
+    card: Card;
+    activeColor?: CardColor | null;
+    size?: CardViewSize;
+    faceDown?: boolean;
+    selected?: boolean;
+    disabled?: boolean;
+    playable?: boolean;
+    dimensions?: { width: number; height: number };
+  }>(),
+  {
+    activeColor: null,
+    size: "md",
+    faceDown: false,
+    selected: false,
+    disabled: false,
+    playable: true,
+  },
+);
+
+const displayColor = computed(() =>
+  getCardDisplayColor(props.card, props.activeColor),
+);
+const style = computed(() => COLOR_STYLES[displayColor.value]);
+const label = computed(() => getCardLabel(props.card.value));
+
+const dimensionStyle = computed(() => {
+  if (!props.dimensions) return undefined;
+  return {
+    "--card-w": `${props.dimensions.width}px`,
+    "--card-h": `${props.dimensions.height}px`,
+  };
+});
+</script>
+
+<template>
+  <div
+    class="card"
+    :class="[
+      size,
+      {
+        selected,
+        disabled,
+        unplayable: !playable && !faceDown,
+        'face-down': faceDown,
+        fluid: !!dimensions,
+      },
+    ]"
+    :style="[
+      faceDown
+        ? undefined
+        : { '--card-color': style.bg, '--card-text': style.text },
+      dimensionStyle,
+    ]"
+  >
+    <template v-if="faceDown">
+      <div class="card-back">
+        <div class="back-pattern" />
+      </div>
+    </template>
+    <template v-else>
+      <div class="card-inner">
+        <div class="corner top-left">
+          <span class="corner-value">{{ label }}</span>
+        </div>
+        <div class="center">
+          <div class="center-oval" />
+          <span class="center-value">{{ label }}</span>
+        </div>
+        <div class="corner bottom-right">
+          <span class="corner-value">{{ label }}</span>
+        </div>
+      </div>
+    </template>
+  </div>
+</template>
+
+<style scoped>
+.card {
+  --card-w: 72px;
+  --card-h: 108px;
+  width: var(--card-w);
+  height: var(--card-h);
+  border-radius: 10px;
+  background: #faf8f5;
+  border: 2px solid #d4cfc7;
+  box-shadow:
+    0 1px 0 #fff inset,
+    0 4px 12px rgba(0, 0, 0, 0.35),
+    0 1px 3px rgba(0, 0, 0, 0.2);
+  flex-shrink: 0;
+  user-select: none;
+  position: relative;
+  transition:
+    transform 0.2s ease,
+    box-shadow 0.2s ease;
+  cursor: pointer;
+}
+
+.card.sm {
+  --card-w: 52px;
+  --card-h: 78px;
+}
+
+.card.lg {
+  --card-w: 100px;
+  --card-h: 150px;
+}
+
+.card.xl {
+  --card-w: 120px;
+  --card-h: 176px;
+}
+
+.card.2xl {
+  --card-w: 140px;
+  --card-h: 210px;
+  border-radius: 12px;
+}
+
+.card.fluid {
+  width: var(--card-w);
+  height: var(--card-h);
+}
+
+.card.fluid .center-value {
+  font-size: calc(var(--card-h) * 0.15);
+}
+
+.card.fluid .top-left,
+.card.fluid .bottom-right {
+  font-size: calc(var(--card-h) * 0.08);
+}
+
+.card.selected {
+  box-shadow:
+    0 0 0 3px #f1c40f,
+    0 8px 24px rgba(0, 0, 0, 0.45);
+  z-index: 50;
+}
+
+.card.disabled {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+
+.card.unplayable:not(.disabled) {
+  opacity: 0.55;
+}
+
+.card.face-down {
+  cursor: default;
+  border-color: #1a3a5c;
+  background: #1a3a5c;
+}
+
+.card-inner {
+  width: 100%;
+  height: 100%;
+  position: relative;
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.corner {
+  position: absolute;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  color: var(--card-text);
+  font-weight: 800;
+  line-height: 1;
+}
+
+.top-left {
+  top: 6px;
+  left: 7px;
+  font-size: 0.85rem;
+}
+
+.bottom-right {
+  bottom: 6px;
+  right: 7px;
+  transform: rotate(180deg);
+  font-size: 0.85rem;
+}
+
+.card.sm .top-left,
+.card.sm .bottom-right {
+  font-size: 0.65rem;
+}
+
+.card.lg .top-left,
+.card.lg .bottom-right {
+  font-size: 1.1rem;
+}
+
+.center {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.center-oval {
+  width: 55%;
+  height: 42%;
+  border-radius: 50%;
+  background: var(--card-color);
+  opacity: 0.92;
+}
+
+.center-value {
+  position: absolute;
+  font-size: 1.6rem;
+  font-weight: 900;
+  color: var(--card-text);
+  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
+}
+
+.card.sm .center-value {
+  font-size: 1.1rem;
+}
+
+.card.lg .center-value {
+  font-size: 2.2rem;
+}
+
+.card.xl .top-left,
+.card.xl .bottom-right {
+  font-size: 1.2rem;
+}
+
+.card.xl .center-value {
+  font-size: 2.6rem;
+}
+
+.card.2xl .top-left,
+.card.2xl .bottom-right {
+  font-size: 1.35rem;
+}
+
+.card.2xl .center-value {
+  font-size: 3rem;
+}
+
+.corner-value {
+  background: var(--card-color);
+  padding: 2px 5px;
+  border-radius: 4px;
+  min-width: 1.2em;
+  text-align: center;
+}
+
+.card-back {
+  width: 100%;
+  height: 100%;
+  border-radius: 8px;
+  background: linear-gradient(135deg, #1a3a5c 0%, #0d2137 50%, #1a3a5c 100%);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  overflow: hidden;
+}
+
+.back-pattern {
+  width: 80%;
+  height: 85%;
+  border: 2px solid rgba(255, 255, 255, 0.15);
+  border-radius: 6px;
+  background: repeating-linear-gradient(
+    45deg,
+    transparent,
+    transparent 4px,
+    rgba(255, 255, 255, 0.04) 4px,
+    rgba(255, 255, 255, 0.04) 8px
+  );
+}
+</style>
@@ -0,0 +1,160 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import type { Card } from '@/games/onecard/types'
+import { PILE_CARD } from '@/components/cardTypes'
+import CardView from './CardView.vue'
+
+/** 원카드 덱 초기 장수 (108장) */
+const FULL_DECK = 108
+
+const props = withDefaults(defineProps<{
+  large?: boolean
+  count?: number | null
+}>(), {
+  large: false,
+  count: null,
+})
+
+const pile = computed(() => (props.large ? PILE_CARD.lg : PILE_CARD.md))
+const stepPx = computed(() => (props.large ? 4 : 3))
+
+const visualStack = computed(() => {
+  const c = props.count
+  if (c == null) {
+    return { layers: 3, depth: 1 }
+  }
+  if (c <= 0) {
+    return { layers: 0, depth: 0 }
+  }
+
+  const depth = Math.max(0.12, Math.min(1, c / (FULL_DECK * 0.65)))
+
+  let layers = 1
+  if (c > 12) layers = 2
+  if (c > 40) layers = 3
+
+  return { layers, depth }
+})
+
+const cardDimensions = computed(() => {
+  const squash = 1 - (1 - visualStack.value.depth) * 0.06
+  return {
+    width: pile.value.width,
+    height: Math.round(pile.value.height * squash),
+  }
+})
+
+const stackBox = computed(() => {
+  const { depth, layers } = visualStack.value
+  const maxOffset = Math.max(0, layers - 1) * stepPx.value * depth
+  const heightTrim = (1 - depth) * (props.large ? 18 : 12)
+  return {
+    width: pile.value.stackWidth,
+    height: Math.round(pile.value.stackHeight - heightTrim + maxOffset),
+  }
+})
+
+const deckBackCard: Card = { id: 'deck-back', color: 'wild', value: '0' }
+
+function layerStyle(layerIndex: number) {
+  const { layers, depth } = visualStack.value
+  const backIndex = layers - 1 - layerIndex
+  const offset = backIndex * stepPx.value * depth
+  return {
+    top: `${offset}px`,
+    left: `${offset}px`,
+    zIndex: layerIndex,
+  }
+}
+</script>
+
+<template>
+  <div class="deck" :class="{ large, empty: visualStack.layers === 0 }">
+    <div
+      class="deck-stack"
+      :style="{ width: `${stackBox.width}px`, height: `${stackBox.height}px` }"
+    >
+      <template v-if="visualStack.layers > 0">
+        <div
+          v-for="i in visualStack.layers"
+          :key="i"
+          class="deck-card"
+          :style="layerStyle(i - 1)"
+        >
+          <CardView
+            :card="deckBackCard"
+            face-down
+            :size="large ? '2xl' : 'md'"
+            :dimensions="cardDimensions"
+          />
+        </div>
+      </template>
+      <div v-else class="deck-empty" :style="cardDimensions" />
+      <span v-if="count != null" class="deck-count">{{ count }}</span>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.deck {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+.deck-stack {
+  position: relative;
+  transition: width 0.35s ease, height 0.35s ease;
+}
+
+.deck-card {
+  position: absolute;
+  top: 0;
+  left: 0;
+  transition: top 0.35s ease, left 0.35s ease;
+}
+
+.deck-empty {
+  position: absolute;
+  top: 0;
+  left: 0;
+  border: 2px dashed #444;
+  border-radius: 10px;
+  background: rgba(26, 26, 46, 0.5);
+}
+
+.deck.large .deck-empty {
+  border-width: 3px;
+  border-radius: 12px;
+}
+
+.deck-count {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  z-index: 10;
+  min-width: 2em;
+  padding: 4px 10px;
+  border-radius: 12px;
+  background: rgba(0, 0, 0, 0.55);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  color: #fff;
+  font-size: 1.1rem;
+  font-weight: 800;
+  text-align: center;
+  pointer-events: none;
+  line-height: 1.2;
+  transition: transform 0.35s ease;
+}
+
+.deck.large .deck-count {
+  font-size: 1.5rem;
+  padding: 6px 14px;
+  border-radius: 14px;
+}
+
+.deck.empty .deck-count {
+  color: #888;
+}
+</style>
@@ -0,0 +1,88 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import type { Card, CardColor } from '@/games/onecard/types'
+import { PILE_CARD } from '@/components/cardTypes'
+import CardView from './CardView.vue'
+
+const props = withDefaults(defineProps<{
+  topCard: Card | null
+  activeColor?: CardColor | null
+  large?: boolean
+  showLabel?: boolean
+}>(), {
+  large: false,
+  showLabel: false,
+})
+
+const pile = computed(() => (props.large ? PILE_CARD.lg : PILE_CARD.md))
+</script>
+
+<template>
+  <div class="discard">
+    <span v-if="showLabel" class="label">버린 더미</span>
+    <div
+      class="discard-slot"
+      :class="{ large }"
+      :style="{ width: `${pile.stackWidth}px`, height: `${pile.stackHeight}px` }"
+    >
+      <CardView
+        v-if="topCard"
+        :card="topCard"
+        :active-color="activeColor"
+        :dimensions="{ width: pile.width, height: pile.height }"
+      />
+      <div v-else class="empty-pile" :class="{ large }">—</div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.discard {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+}
+
+.label {
+  font-size: 0.8rem;
+  color: #888;
+}
+
+.discard-slot {
+  position: relative;
+  display: flex;
+  align-items: flex-start;
+  justify-content: flex-start;
+}
+
+.discard-slot :deep(.card) {
+  border-width: 2px;
+  border-radius: 10px;
+  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
+}
+
+.discard-slot.large :deep(.card) {
+  border-width: 3px;
+  border-radius: 12px;
+}
+
+.empty-pile {
+  width: 72px;
+  height: 104px;
+  border: 2px dashed #444;
+  border-radius: 10px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #555;
+}
+
+.empty-pile.large {
+  width: 140px;
+  height: 210px;
+  border-radius: 12px;
+  border-width: 3px;
+  font-size: 1.2rem;
+}
+</style>
@@ -0,0 +1,39 @@
+<script setup lang="ts">
+import { useRouter } from 'vue-router'
+import { usePeerRoom } from '@/composables/usePeerRoom'
+import { clearSession } from '@/utils/session'
+
+const router = useRouter()
+const { destroy } = usePeerRoom()
+
+function leave() {
+  destroy()
+  clearSession()
+  router.push('/onecard/lobby')
+}
+</script>
+
+<template>
+  <button type="button" class="exit-btn" @click="leave">
+    나가기
+  </button>
+</template>
+
+<style scoped>
+.exit-btn {
+  padding: 8px 14px;
+  border-radius: 8px;
+  border: 1px solid #555;
+  background: rgba(42, 42, 74, 0.9);
+  color: #ccc;
+  font-size: 0.85rem;
+  font-weight: 600;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+  white-space: nowrap;
+}
+
+.exit-btn:active {
+  background: #3d3560;
+}
+</style>
@@ -0,0 +1,307 @@
+<script setup lang="ts">
+import { computed, ref, onMounted, onUnmounted, watch } from 'vue'
+import type { Card, CardColor } from '@/games/onecard/types'
+import { getPlayableCards } from '@/games/onecard/rules'
+import CardView from './CardView.vue'
+
+const props = defineProps<{
+  cards: Card[]
+  topCard?: Card | null
+  activeColor?: CardColor | null
+  drawPenalty?: number
+  canInteract?: boolean
+}>()
+
+const emit = defineEmits<{
+  play: [cardId: string]
+  'request-color': [cardId: string]
+  'selection-change': [cardId: string | null]
+}>()
+
+const selectedId = ref<string | null>(null)
+const fanRef = ref<HTMLElement | null>(null)
+const fanWidthPx = ref(360)
+const cardHeightPx = ref(120)
+const cardWidthPx = ref(80)
+const playDragThreshold = ref(72)
+
+const dragCardId = ref<string | null>(null)
+const dragStartY = ref(0)
+const dragStartX = ref(0)
+const dragCurrentY = ref(0)
+const dragCurrentX = ref(0)
+const isDragging = ref(false)
+const justSelected = ref(false)
+
+const cardDimensions = computed(() => ({
+  width: cardWidthPx.value,
+  height: cardHeightPx.value,
+}))
+
+const fanHeightPx = computed(() => Math.round(cardHeightPx.value * 1.15 + 48))
+
+const playableIds = computed(() => {
+  if (!props.topCard || !props.canInteract) return new Set<string>()
+  return new Set(
+    getPlayableCards(
+      props.cards,
+      props.topCard,
+      props.activeColor ?? null,
+      props.drawPenalty ?? 0,
+    ).map((c) => c.id),
+  )
+})
+
+const cardSpacing = computed(() => {
+  const n = props.cards.length
+  if (n <= 1) return 0
+  const cardW = cardWidthPx.value
+  return Math.min(cardW * 0.55, Math.max(24, (fanWidthPx.value - cardW) / (n - 1)))
+})
+
+function updateLayout() {
+  const vh = window.innerHeight
+  const vw = window.innerWidth
+
+  const maxCardH = vh * 0.5
+  const minCardH = vh < 400 ? 96 : 108
+  const targetH = Math.max(minCardH, Math.min(maxCardH, vh * 0.48))
+  cardHeightPx.value = Math.round(targetH)
+  cardWidthPx.value = Math.round(targetH * (2 / 3))
+  playDragThreshold.value = Math.round(targetH * 0.34)
+
+  if (fanRef.value) {
+    fanWidthPx.value = fanRef.value.clientWidth
+  } else {
+    fanWidthPx.value = Math.min(vw * 0.98, Math.max(360, props.cards.length * cardWidthPx.value * 0.45 + 120))
+  }
+}
+
+onMounted(() => {
+  updateLayout()
+  window.addEventListener('resize', updateLayout)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('resize', updateLayout)
+})
+
+watch(selectedId, (cardId) => {
+  emit('selection-change', cardId)
+})
+
+function getFanStyle(index: number, total: number) {
+  const card = props.cards[index]
+  if (!card) return {}
+
+  const maxSpread = Math.min(16, 3 + total * 0.5)
+  const step = total > 1 ? maxSpread / (total - 1) : 0
+  const angle = total > 1 ? -maxSpread / 2 + step * index : 0
+  const offset = total > 1 ? (index - (total - 1) / 2) * cardSpacing.value : 0
+
+  const isSelected = selectedId.value === card.id
+  const isActiveDrag = dragCardId.value === card.id
+
+  if (isSelected) {
+    const dragDeltaY = isActiveDrag ? dragStartY.value - dragCurrentY.value : 0
+    const dragDeltaX = isActiveDrag ? dragCurrentX.value - dragStartX.value : 0
+    const lift = -cardHeightPx.value * 0.42 - Math.max(0, dragDeltaY)
+    const scale = isDragging.value ? 1.12 : 1.08
+
+    return {
+      transform: `translateX(${offset + dragDeltaX}px) translateY(${lift}px) rotate(0deg) scale(${scale})`,
+      zIndex: 200,
+      transition: isDragging.value ? 'none' : 'transform 0.25s ease',
+      marginLeft: `-${cardWidthPx.value / 2}px`,
+    }
+  }
+
+  return {
+    transform: `translateX(${offset}px) translateY(0) rotate(${angle}deg) scale(1)`,
+    zIndex: index,
+    transition: 'transform 0.25s ease',
+    marginLeft: `-${cardWidthPx.value / 2}px`,
+  }
+}
+
+function handlePointerDown(e: PointerEvent, card: Card) {
+  if (!props.canInteract) return
+
+  if (selectedId.value !== card.id) {
+    selectedId.value = card.id
+    justSelected.value = true
+    return
+  }
+
+  dragCardId.value = card.id
+  dragStartY.value = e.clientY
+  dragStartX.value = e.clientX
+  dragCurrentY.value = e.clientY
+  dragCurrentX.value = e.clientX
+  isDragging.value = false
+  ;(e.currentTarget as HTMLElement).setPointerCapture(e.pointerId)
+}
+
+function handlePointerMove(e: PointerEvent) {
+  if (!dragCardId.value) return
+  dragCurrentY.value = e.clientY
+  dragCurrentX.value = e.clientX
+  if (Math.abs(dragStartY.value - e.clientY) > 6) {
+    isDragging.value = true
+  }
+}
+
+function handlePointerUp(card: Card) {
+  if (justSelected.value && selectedId.value === card.id && !dragCardId.value) {
+    justSelected.value = false
+    return
+  }
+
+  if (dragCardId.value !== card.id) return
+
+  const deltaY = dragStartY.value - dragCurrentY.value
+
+  if (isDragging.value && deltaY >= playDragThreshold.value) {
+    if (playableIds.value.has(card.id)) {
+      if (card.color === 'wild' || card.value === 'wild' || card.value === 'wild4') {
+        emit('request-color', card.id)
+      } else {
+        emit('play', card.id)
+      }
+      selectedId.value = null
+    }
+  } else if (!isDragging.value) {
+    selectedId.value = null
+  }
+
+  justSelected.value = false
+  dragCardId.value = null
+  isDragging.value = false
+}
+
+function clearSelection() {
+  if (isDragging.value) return
+  selectedId.value = null
+  dragCardId.value = null
+  justSelected.value = false
+}
+
+defineExpose({ clearSelection })
+</script>
+
+<template>
+  <div class="hand-container">
+    <div
+      v-if="selectedId"
+      class="backdrop"
+      @click="clearSelection"
+      @pointerdown.prevent="clearSelection"
+    />
+
+    <p v-if="selectedId && playableIds.has(selectedId)" class="hint">
+      ↑ 위로 드래그하여 내기
+    </p>
+    <p v-else-if="selectedId" class="hint muted">
+      낼 수 없는 카드 — 탭하여 접기
+    </p>
+
+    <div
+      ref="fanRef"
+      class="hand-fan"
+      :style="{ width: 'min(98vw, 960px)', height: `${fanHeightPx}px` }"
+    >
+      <div
+        v-for="(card, index) in cards"
+        :key="card.id"
+        class="card-slot"
+        :class="{ selected: selectedId === card.id, dragging: dragCardId === card.id && isDragging }"
+        :style="getFanStyle(index, cards.length)"
+        @pointerdown="handlePointerDown($event, card)"
+        @pointermove="handlePointerMove"
+        @pointerup="handlePointerUp(card)"
+        @pointercancel="handlePointerUp(card)"
+      >
+        <CardView
+          :card="card"
+          :active-color="activeColor"
+          :selected="selectedId === card.id"
+          :playable="playableIds.has(card.id)"
+          :disabled="!canInteract"
+          :dimensions="cardDimensions"
+          size="md"
+        />
+      </div>
+    </div>
+
+    <p v-if="cards.length === 0" class="empty">패가 비어 있습니다</p>
+  </div>
+</template>
+
+<style scoped>
+.hand-container {
+  width: 100%;
+  max-height: 50vh;
+  max-height: 50dvh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: flex-end;
+  padding: 0 1vw;
+  position: relative;
+}
+
+.backdrop {
+  position: fixed;
+  inset: 0;
+  z-index: 50;
+}
+
+.hint {
+  position: fixed;
+  left: 50%;
+  bottom: calc(min(50vh, 50dvh) + min(24vh, 24dvh) + 12px);
+  transform: translateX(-50%);
+  font-size: 0.85rem;
+  color: #f1c40f;
+  z-index: 100;
+  pointer-events: none;
+  background: rgba(26, 26, 46, 0.9);
+  padding: 6px 14px;
+  border-radius: 8px;
+  white-space: nowrap;
+}
+
+.hint.muted {
+  color: #888;
+}
+
+.hand-fan {
+  position: relative;
+  margin: 0 auto;
+  z-index: 60;
+}
+
+.card-slot {
+  position: absolute;
+  left: 50%;
+  bottom: 0;
+  transform-origin: bottom center;
+  touch-action: none;
+  cursor: grab;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.card-slot.dragging {
+  cursor: grabbing;
+}
+
+.card-slot:not(.selected) {
+  cursor: pointer;
+}
+
+.empty {
+  color: #888;
+  font-size: 0.9rem;
+  margin-top: 16px;
+}
+</style>
@@ -0,0 +1,39 @@
+<script setup lang="ts">
+import { useRouter } from 'vue-router'
+import { usePeerRoom } from '@/composables/usePeerRoom'
+import { clearSession } from '@/utils/session'
+
+const router = useRouter()
+const { destroy } = usePeerRoom()
+
+function goHome() {
+  destroy()
+  clearSession()
+  router.push('/')
+}
+</script>
+
+<template>
+  <button type="button" class="home-btn" @click="goHome">
+    홈으로
+  </button>
+</template>
+
+<style scoped>
+.home-btn {
+  padding: 8px 14px;
+  border-radius: 8px;
+  border: 1px solid #555;
+  background: rgba(42, 42, 74, 0.9);
+  color: #ccc;
+  font-size: 0.85rem;
+  font-weight: 600;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+  white-space: nowrap;
+}
+
+.home-btn:active {
+  background: #3d3560;
+}
+</style>
@@ -0,0 +1,240 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import type { CardViewSize } from '@/components/cardTypes'
+import CardView from './CardView.vue'
+
+const props = withDefaults(defineProps<{
+  count: number
+  position: 'top' | 'bottom'
+  isTurn?: boolean
+  large?: boolean
+  compact?: boolean
+  previewIndex?: number | null
+}>(), {
+  isTurn: false,
+  large: false,
+  compact: false,
+  previewIndex: null,
+})
+
+const isHovered = ref(false)
+
+const visibleCount = computed(() => Math.min(Math.max(props.count, 0), 14))
+
+const cardSize = computed((): CardViewSize => (props.large ? '2xl' : 'md'))
+const cardHalf = computed(() => (props.large ? 70 : 36))
+const cardHeight = computed(() => (props.large ? 210 : 120))
+const cardSpacing = computed(() => (props.large ? 28 : 18))
+const previewLift = computed(() => Math.round(cardHeight.value * 0.42))
+const maxSpread = computed(() => {
+  const total = visibleCount.value
+  if (props.large) return Math.min(42, 8 + total * 2.2)
+  return Math.min(48, 10 + total * 3)
+})
+
+/** 상단 플레이어 fan은 좌우 반전 배치 → 강조는 패 인덱스 그대로 매칭 */
+function isPreviewSlot(slotIndex: number) {
+  if (props.previewIndex == null) return false
+  return slotIndex === props.previewIndex
+}
+
+function slotOffset(slotIndex: number, total: number) {
+  const raw = (slotIndex - (total - 1) / 2) * cardSpacing.value
+  return props.position === 'top' ? -raw : raw
+}
+
+function cardStyle(index: number) {
+  const total = visibleCount.value
+  if (total <= 0) return { display: 'none' }
+
+  const spread = maxSpread.value
+  const step = total > 1 ? spread / (total - 1) : 0
+  const angle = total > 1
+    ? (props.position === 'top'
+      ? spread / 2 - step * index
+      : -spread / 2 + step * index)
+    : 0
+  const offset = slotOffset(index, total)
+
+  const isPreview = isPreviewSlot(index)
+
+  if (isPreview) {
+    const lift = props.position === 'top' ? previewLift.value : -previewLift.value
+    const previewRotate = props.position === 'top' ? 180 : 0
+
+    return {
+      transform: `translateX(${offset}px) translateY(${lift}px) rotate(${previewRotate}deg) scale(1.08)`,
+      zIndex: 300,
+      '--delay': `${index * 0.05}s`,
+    }
+  }
+
+  const hoverSpread = isHovered.value ? 1.35 : 1
+  const adjustedAngle = angle * hoverSpread
+  const adjustedOffset = slotOffset(index, total) * hoverSpread
+  const hoverLift = isHovered.value ? (props.large ? 20 : 14) : 0
+
+  if (props.position === 'top') {
+    return {
+      transform: `translateX(${adjustedOffset}px) translateY(${hoverLift}px) rotate(${180 - adjustedAngle}deg)`,
+      zIndex: index,
+      '--delay': `${index * 0.05}s`,
+    }
+  }
+
+  return {
+    transform: `translateX(${adjustedOffset}px) translateY(${-hoverLift}px) rotate(${adjustedAngle}deg)`,
+    zIndex: index,
+    '--delay': `${index * 0.05}s`,
+  }
+}
+</script>
+
+<template>
+  <div
+    class="opponent-zone"
+    :class="[position, { 'is-turn': isTurn, hovered: isHovered, large, compact }]"
+    @mouseenter="isHovered = true"
+    @mouseleave="isHovered = false"
+    @touchstart.passive="isHovered = true"
+    @touchend="isHovered = false"
+  >
+    <div class="fan" :class="{ empty: count === 0 }">
+      <div
+        v-for="i in visibleCount"
+        :key="i"
+        class="card-slot"
+        :class="{ 'is-preview': isPreviewSlot(i - 1) }"
+        :style="[cardStyle(i - 1), { marginLeft: `-${cardHalf}px` }]"
+      >
+        <div class="card-float">
+          <CardView
+            :card="{ id: `back-${i}`, color: 'wild', value: '0' }"
+            face-down
+            :selected="isPreviewSlot(i - 1)"
+            :size="cardSize"
+          />
+        </div>
+      </div>
+      <p v-if="count === 0" class="empty-hand">패 없음</p>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.opponent-zone {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: 100%;
+  padding: 8px 16px;
+  transition: filter 0.2s;
+}
+
+.opponent-zone.large {
+  padding: 12px 24px;
+}
+
+.opponent-zone.compact {
+  padding: 0;
+}
+
+.opponent-zone.compact.large {
+  padding: 0;
+}
+
+.opponent-zone.top {
+  flex-direction: column;
+}
+
+.opponent-zone.bottom {
+  flex-direction: column-reverse;
+}
+
+.opponent-zone.is-turn {
+  filter: drop-shadow(0 0 16px rgba(241, 196, 15, 0.5));
+}
+
+.fan {
+  position: relative;
+  width: min(100%, 420px);
+  height: 120px;
+  display: flex;
+  justify-content: center;
+}
+
+.opponent-zone.large .fan {
+  width: min(92vw, 760px);
+  height: 200px;
+}
+
+.opponent-zone.top .fan {
+  align-items: flex-start;
+}
+
+.opponent-zone.bottom .fan {
+  align-items: flex-end;
+}
+
+.opponent-zone.top .card-slot {
+  top: 0;
+  transform-origin: top center;
+}
+
+.opponent-zone.bottom .card-slot {
+  bottom: 0;
+  transform-origin: bottom center;
+}
+
+.card-slot {
+  position: absolute;
+  left: 50%;
+  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
+}
+
+.card-slot.is-preview {
+  transition: transform 0.25s ease;
+}
+
+.card-slot .card-float {
+  animation: cardBob 3s ease-in-out infinite;
+  animation-delay: var(--delay, 0s);
+}
+
+.opponent-zone.top .card-slot .card-float {
+  animation-name: cardBobTop;
+}
+
+.opponent-zone.bottom .card-slot .card-float {
+  animation-name: cardBobBottom;
+}
+
+.opponent-zone.hovered .card-slot:not(.is-preview) .card-float {
+  animation-play-state: paused;
+}
+
+.card-slot.is-preview .card-float {
+  animation: none;
+}
+
+@keyframes cardBobTop {
+  0%, 100% { transform: translateY(0); }
+  50% { transform: translateY(5px); }
+}
+
+@keyframes cardBobBottom {
+  0%, 100% { transform: translateY(0); }
+  50% { transform: translateY(5px); }
+}
+
+.empty-hand {
+  color: #555;
+  font-size: 0.8rem;
+  align-self: center;
+  margin: auto;
+}
+
+.opponent-zone.large .empty-hand {
+  font-size: 1rem;
+}
+</style>
@@ -0,0 +1,79 @@
+<script setup lang="ts">
+defineProps<{
+  players: { id: string; name: string; handCount?: number }[]
+  selectedId: string | null
+  currentTurnId?: string | null
+}>()
+
+const emit = defineEmits<{
+  select: [playerId: string]
+}>()
+</script>
+
+<template>
+  <div class="draw-buttons">
+    <button
+      v-for="player in players"
+      :key="player.id"
+      class="player-btn"
+      :class="{
+        selected: selectedId === player.id,
+        'is-turn': currentTurnId === player.id,
+      }"
+      @click="emit('select', player.id)"
+    >
+      <span class="player-name">{{ player.name }}</span>
+      <span v-if="player.handCount !== undefined" class="hand-count">
+        {{ player.handCount }}장
+      </span>
+    </button>
+  </div>
+</template>
+
+<style scoped>
+.draw-buttons {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.player-btn {
+  padding: 12px 20px;
+  border-radius: 10px;
+  border: 2px solid #444;
+  background: #2a2a4a;
+  color: #eee;
+  font-size: 1rem;
+  cursor: pointer;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+  min-width: 160px;
+  transition: border-color 0.15s, background 0.15s;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.player-btn.selected {
+  border-color: #6c5ce7;
+  background: #3d3560;
+}
+
+.player-btn.is-turn {
+  border-color: #f1c40f;
+}
+
+.player-btn.selected.is-turn {
+  border-color: #a29bfe;
+  box-shadow: 0 0 0 2px #f1c40f;
+}
+
+.player-name {
+  font-weight: 600;
+}
+
+.hand-count {
+  font-size: 0.85rem;
+  color: #aaa;
+}
+</style>
@@ -0,0 +1,63 @@
+<script setup lang="ts">
+defineProps<{
+  players: { id: string; name: string; handCount?: number }[]
+  currentTurnId?: string | null
+}>()
+</script>
+
+<template>
+  <ul class="player-list">
+    <li
+      v-for="player in players"
+      :key="player.id"
+      class="player-item"
+      :class="{ active: currentTurnId === player.id }"
+    >
+      <span class="name">{{ player.name }}</span>
+      <span v-if="player.handCount !== undefined" class="count">{{ player.handCount }}장</span>
+      <span v-if="currentTurnId === player.id" class="turn-badge">턴</span>
+    </li>
+  </ul>
+</template>
+
+<style scoped>
+.player-list {
+  list-style: none;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.player-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 14px;
+  background: #2a2a4a;
+  border-radius: 8px;
+  border: 2px solid transparent;
+  font-size: 0.9rem;
+}
+
+.player-item.active {
+  border-color: #f1c40f;
+}
+
+.name {
+  font-weight: 600;
+}
+
+.count {
+  color: #aaa;
+  font-size: 0.85rem;
+}
+
+.turn-badge {
+  background: #f1c40f;
+  color: #1a1a2e;
+  font-size: 0.7rem;
+  font-weight: 700;
+  padding: 2px 6px;
+  border-radius: 4px;
+}
+</style>
@@ -0,0 +1,135 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { copyToClipboard } from '@/utils/clipboard'
+
+const props = withDefaults(defineProps<{
+  code: string
+  compact?: boolean
+}>(), {
+  compact: false,
+})
+
+const status = ref<'idle' | 'copied' | 'failed'>('idle')
+
+async function handleCopy() {
+  if (!props.code) return
+  const ok = await copyToClipboard(props.code)
+  status.value = ok ? 'copied' : 'failed'
+  setTimeout(() => { status.value = 'idle' }, 2000)
+}
+</script>
+
+<template>
+  <div class="room-code" :class="{ compact }">
+    <div class="code-display">
+      <span v-if="!compact" class="label">방 코드</span>
+      <span class="code-text">{{ code }}</span>
+    </div>
+    <button
+      type="button"
+      class="copy-btn"
+      :class="{ copied: status === 'copied', failed: status === 'failed' }"
+      :disabled="!code"
+      @click="handleCopy"
+    >
+      {{ status === 'copied' ? '복사됨!' : status === 'failed' ? '실패' : '복사' }}
+    </button>
+  </div>
+</template>
+
+<style scoped>
+.room-code {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 12px;
+  user-select: none;
+  -webkit-user-select: none;
+}
+
+.room-code.compact {
+  position: fixed;
+  top: 12px;
+  left: 12px;
+  z-index: 300;
+  flex-direction: row;
+  align-items: center;
+  gap: 8px;
+  padding: 6px 8px 6px 10px;
+  background: rgba(42, 42, 74, 0.85);
+  border: 1px solid #444;
+  border-radius: 8px;
+}
+
+.code-display {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 4px;
+}
+
+.compact .code-display {
+  flex-direction: row;
+  gap: 6px;
+}
+
+.label {
+  font-size: 0.85rem;
+  color: #888;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+
+.code-text {
+  font-size: 2rem;
+  font-weight: 800;
+  letter-spacing: 0.2em;
+  color: #a29bfe;
+  user-select: none;
+  -webkit-user-select: none;
+  touch-action: manipulation;
+}
+
+.compact .code-text {
+  font-size: 0.85rem;
+  letter-spacing: 0.12em;
+}
+
+.copy-btn {
+  padding: 8px 16px;
+  border-radius: 8px;
+  border: 1px solid #555;
+  background: rgba(42, 42, 74, 0.9);
+  color: #ccc;
+  font-size: 0.85rem;
+  font-weight: 600;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+  touch-action: manipulation;
+  white-space: nowrap;
+}
+
+.compact .copy-btn {
+  padding: 4px 10px;
+  font-size: 0.75rem;
+}
+
+.copy-btn:active:not(:disabled) {
+  background: #3d3560;
+}
+
+.copy-btn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.copy-btn.copied {
+  border-color: #27ae60;
+  color: #27ae60;
+}
+
+.copy-btn.failed {
+  border-color: #e74c3c;
+  color: #e74c3c;
+}
+</style>
@@ -0,0 +1,47 @@
+<script setup lang="ts">
+defineProps<{
+  disabled?: boolean
+}>()
+
+const emit = defineEmits<{
+  undo: []
+}>()
+</script>
+
+<template>
+  <button
+    class="undo-btn"
+    :disabled="disabled"
+    @click="emit('undo')"
+  >
+    ↩ 되돌리기
+  </button>
+</template>
+
+<style scoped>
+.undo-btn {
+  position: fixed;
+  bottom: 20px;
+  right: 20px;
+  padding: 12px 18px;
+  border-radius: 10px;
+  border: 2px solid #555;
+  background: #2a2a4a;
+  color: #eee;
+  font-size: 0.95rem;
+  font-weight: 600;
+  cursor: pointer;
+  z-index: 100;
+  transition: opacity 0.15s, background 0.15s;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.undo-btn:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
+
+.undo-btn:not(:disabled):active {
+  background: #3d3560;
+}
+</style>
@@ -0,0 +1,100 @@
+<script setup lang="ts">
+import type { CardColor } from '@/games/onecard/types'
+import { COLOR_STYLES } from '@/games/onecard/cardDisplay'
+
+defineProps<{
+  visible: boolean
+}>()
+
+const emit = defineEmits<{
+  select: [color: CardColor]
+  cancel: []
+}>()
+
+const colors: CardColor[] = ['red', 'yellow', 'green', 'blue']
+</script>
+
+<template>
+  <div v-if="visible" class="overlay" @click.self="emit('cancel')">
+    <div class="picker">
+      <h3>색상 선택</h3>
+      <p class="desc">와일드 카드 색상을 고르세요</p>
+      <div class="colors">
+        <button
+          v-for="color in colors"
+          :key="color"
+          type="button"
+          class="color-btn"
+          :style="{ background: COLOR_STYLES[color].bg, color: COLOR_STYLES[color].text }"
+          @click="emit('select', color)"
+        >
+          {{ COLOR_STYLES[color].label }}
+        </button>
+      </div>
+      <button type="button" class="cancel-btn" @click="emit('cancel')">취소</button>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.7);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 500;
+  padding: 24px;
+}
+
+.picker {
+  background: #2a2a4a;
+  border-radius: 16px;
+  padding: 24px;
+  width: 100%;
+  max-width: 320px;
+  text-align: center;
+}
+
+.picker h3 {
+  font-size: 1.2rem;
+  margin-bottom: 8px;
+}
+
+.desc {
+  font-size: 0.85rem;
+  color: #888;
+  margin-bottom: 20px;
+}
+
+.colors {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 10px;
+  margin-bottom: 16px;
+}
+
+.color-btn {
+  padding: 16px;
+  border: 2px solid transparent;
+  border-radius: 10px;
+  font-weight: 700;
+  font-size: 1rem;
+  cursor: pointer;
+  transition: transform 0.1s;
+}
+
+.color-btn:active {
+  transform: scale(0.96);
+}
+
+.cancel-btn {
+  background: none;
+  border: none;
+  color: #888;
+  font-size: 0.9rem;
+  cursor: pointer;
+  padding: 8px;
+}
+</style>
@@ -0,0 +1,7 @@
+export type CardViewSize = 'sm' | 'md' | 'lg' | 'xl' | '2xl'
+
+/** 보드판 중앙 덱·버린 더미 공통 카드 크기 */
+export const PILE_CARD = {
+  md: { width: 72, height: 104, stackWidth: 80, stackHeight: 110 },
+  lg: { width: 140, height: 210, stackWidth: 152, stackHeight: 224 },
+} as const
@@ -0,0 +1,29 @@
+import type { Card, CardColor, PublicGameState, RoomRole } from '@/games/onecard/types'
+
+export type RoomMessage =
+  | { type: 'join'; role: RoomRole; playerId: string; name: string }
+  | { type: 'joined'; playerId: string; players: { id: string; name: string }[] }
+  | { type: 'players-update'; players: { id: string; name: string }[] }
+  | { type: 'reject'; reason: string }
+  | { type: 'player-left'; playerId: string; players: { id: string; name: string }[] }
+  | { type: 'game-start'; turnOrder: string[] }
+  | { type: 'hand-update'; hand: Card[] }
+  | { type: 'state-update'; state: PublicGameState }
+  | { type: 'play-card'; playerId: string; cardId: string; chosenColor?: CardColor }
+  | { type: 'request-draw'; playerId: string }
+  | { type: 'declare-onecard'; playerId: string }
+  | { type: 'hand-preview'; playerId: string; cardId: string | null }
+  | { type: 'play-rejected'; reason: string }
+  | { type: 'ping' }
+
+export interface PeerConnection {
+  open: boolean
+  send: (data: unknown) => void
+  close: () => void
+}
+
+export interface ConnectedPlayer {
+  id: string
+  name: string
+  connection: PeerConnection
+}
@@ -0,0 +1,446 @@
+import { ref } from 'vue'
+import Peer, { type DataConnection } from 'peerjs'
+import type { CardColor, GameState } from '@/games/onecard/types'
+import { createGame, drawCardToPlayer, playCard, playerDrawCards, declareOneCard, toPublicState, undoLastAction, continueAfterRoundWin } from '@/games/onecard/game'
+import { createPeerOptions } from '@/config/peer'
+import {
+  autoAssignSeats,
+  loadSeats,
+  turnOrderFromSeats,
+  MAX_PLAYERS,
+  type SeatMap,
+} from '@/utils/boardLayout'
+import { useRoomStore } from '@/stores/roomStore'
+import type { ConnectedPlayer, PeerConnection, RoomMessage } from './messages'
+
+const CONNECTION_TIMEOUT_MS = 25_000
+
+const peer = ref<Peer | null>(null)
+const gameState = ref<GameState | null>(null)
+
+let pendingJoinResolve: (() => void) | null = null
+let pendingJoinReject: ((err: Error) => void) | null = null
+let connectionTimeout: ReturnType<typeof setTimeout> | null = null
+
+function clearJoinPending() {
+  if (connectionTimeout) {
+    clearTimeout(connectionTimeout)
+    connectionTimeout = null
+  }
+  pendingJoinResolve = null
+  pendingJoinReject = null
+}
+
+function send(conn: PeerConnection, msg: RoomMessage) {
+  if (conn.open) {
+    conn.send(msg)
+  }
+}
+
+function broadcast(msg: RoomMessage, excludeId?: string) {
+  const store = useRoomStore()
+  for (const p of store.connectedPlayers) {
+    if (p.id !== excludeId) {
+      send(p.connection, msg)
+    }
+  }
+}
+
+function syncAllHands() {
+  const store = useRoomStore()
+  if (!gameState.value) return
+  for (const p of store.connectedPlayers) {
+    const hand = gameState.value.hands[p.id] ?? []
+    send(p.connection, { type: 'hand-update', hand })
+  }
+  store.publicState = toPublicState(gameState.value)
+  broadcast({ type: 'state-update', state: store.publicState })
+}
+
+function resolveJoin() {
+  const resolve = pendingJoinResolve
+  if (!resolve) return
+  clearJoinPending()
+  resolve()
+}
+
+function rejectJoin(message: string) {
+  const reject = pendingJoinReject
+  if (!reject) return
+  clearJoinPending()
+  reject(new Error(message))
+}
+
+function handleClientMessage(msg: RoomMessage, conn: PeerConnection) {
+  const store = useRoomStore()
+  switch (msg.type) {
+    case 'joined':
+      store.players = msg.players
+      store.connectedPlayers = [{
+        id: 'board',
+        name: '보드판',
+        connection: conn,
+      }]
+      resolveJoin()
+      break
+    case 'players-update':
+      store.players = msg.players
+      break
+    case 'reject':
+      store.connectionError = msg.reason
+      rejectJoin(msg.reason)
+      break
+    case 'player-left':
+      store.players = msg.players
+      break
+    case 'game-start':
+      store.gameStarted = true
+      break
+    case 'hand-update':
+      store.myHand = msg.hand
+      break
+    case 'state-update':
+      store.publicState = msg.state
+      break
+    case 'play-rejected':
+      store.setStatus(msg.reason)
+      break
+  }
+}
+
+function handleHostPlayerMessage(msg: RoomMessage, conn: PeerConnection) {
+  if (msg.type === 'hand-preview') {
+    useRoomStore().setPlayerHandPreview(msg.playerId, msg.cardId)
+    return
+  }
+
+  if (!gameState.value) return
+
+  switch (msg.type) {
+    case 'play-card': {
+      const result = playCard(gameState.value, msg.playerId, msg.cardId, msg.chosenColor)
+      if (!result.ok) {
+        send(conn, { type: 'play-rejected', reason: result.reason })
+        return
+      }
+      gameState.value = result.state
+      useRoomStore().clearPlayerHandPreview(msg.playerId)
+      syncAllHands()
+      break
+    }
+    case 'request-draw': {
+      const result = playerDrawCards(gameState.value, msg.playerId)
+      if (!result.ok) {
+        send(conn, { type: 'play-rejected', reason: result.reason })
+        return
+      }
+      gameState.value = result.state
+      syncAllHands()
+      break
+    }
+    case 'declare-onecard': {
+      gameState.value = declareOneCard(gameState.value, msg.playerId)
+      const store = useRoomStore()
+      store.publicState = toPublicState(gameState.value)
+      broadcast({ type: 'state-update', state: store.publicState })
+      break
+    }
+  }
+}
+
+function setupConnectionHandler(conn: DataConnection) {
+  const peerConn = conn as unknown as PeerConnection
+
+  conn.on('open', () => {
+    const store = useRoomStore()
+
+    conn.on('data', (data) => {
+      const msg = data as RoomMessage
+      if (msg.type === 'join' && msg.role === 'player') {
+        const existing = store.connectedPlayers.find((cp) => cp.id === msg.playerId)
+        if (existing) return
+
+        if (store.connectedPlayers.length >= MAX_PLAYERS) {
+          send(peerConn, { type: 'reject', reason: '방이 가득 찼습니다 (최대 4명)' })
+          return
+        }
+
+        const newPlayer: ConnectedPlayer = {
+          id: msg.playerId,
+          name: msg.name,
+          connection: peerConn,
+        }
+        store.connectedPlayers.push(newPlayer)
+        store.players = store.connectedPlayers.map((cp) => ({
+          id: cp.id,
+          name: cp.name,
+        }))
+
+        send(peerConn, {
+          type: 'joined',
+          playerId: msg.playerId,
+          players: store.players,
+        })
+        broadcast(
+          { type: 'players-update', players: store.players },
+          msg.playerId,
+        )
+      } else if (
+        msg.type === 'play-card'
+        || msg.type === 'request-draw'
+        || msg.type === 'declare-onecard'
+        || msg.type === 'hand-preview'
+      ) {
+        handleHostPlayerMessage(msg, peerConn)
+      }
+    })
+
+    conn.on('close', () => {
+      const store = useRoomStore()
+      const left = store.connectedPlayers.find((cp) => cp.connection === peerConn)
+      if (!left) return
+      store.connectedPlayers = store.connectedPlayers.filter((cp) => cp.id !== left.id)
+      store.players = store.connectedPlayers.map((cp) => ({
+        id: cp.id,
+        name: cp.name,
+      }))
+      store.clearPlayerHandPreview(left.id)
+      broadcast({ type: 'player-left', playerId: left.id, players: store.players })
+      if (gameState.value) {
+        gameState.value.phase = 'paused'
+        syncAllHands()
+      }
+    })
+
+    conn.on('error', () => {
+      rejectJoin('WebRTC 연결에 실패했습니다. 네트워크를 확인해주세요.')
+    })
+  })
+}
+
+function waitForPeerOpen(p: Peer): Promise<void> {
+  return new Promise((resolve, reject) => {
+    if (p.open) {
+      resolve()
+      return
+    }
+    p.once('open', () => resolve())
+    p.once('error', (err) => reject(err))
+  })
+}
+
+async function hostRoom(roomCode: string): Promise<void> {
+  const store = useRoomStore()
+  if (peer.value && !peer.value.destroyed) {
+    store.isConnected = true
+    return
+  }
+
+  const p = new Peer(roomCode, createPeerOptions())
+  peer.value = p
+  p.on('connection', setupConnectionHandler)
+
+  try {
+    await waitForPeerOpen(p)
+    store.isConnected = true
+  } catch (err) {
+    const message = err instanceof Error ? err.message : '방 생성에 실패했습니다.'
+    if (message.includes('is taken') || message.includes('ID')) {
+      store.connectionError = '방 코드가 이미 사용 중입니다. 다시 시도해주세요.'
+    } else {
+      store.connectionError = message
+    }
+    p.destroy()
+    peer.value = null
+    throw err
+  }
+}
+
+async function joinRoom(roomCode: string, pid: string, name: string): Promise<void> {
+  const store = useRoomStore()
+  if (peer.value && store.isConnected && store.players.length > 0) return
+
+  return new Promise((resolve, reject) => {
+    pendingJoinResolve = resolve
+    pendingJoinReject = reject
+
+    connectionTimeout = setTimeout(() => {
+      store.connectionError = '연결 시간이 초과되었습니다. 보드판이 방을 열었는지 확인해주세요.'
+      rejectJoin('연결 시간이 초과되었습니다.')
+    }, CONNECTION_TIMEOUT_MS)
+
+    const p = new Peer(createPeerOptions())
+    peer.value = p
+
+    p.on('error', (err) => {
+      const msg = err.message
+      if (msg.includes('Could not connect') || msg.includes('Lost connection')) {
+        store.connectionError = '보드판을 찾을 수 없습니다. 방 코드를 확인해주세요.'
+      } else {
+        store.connectionError = msg
+      }
+      rejectJoin(msg)
+    })
+
+    p.on('open', () => {
+      const conn = p.connect(roomCode, { reliable: true })
+      const peerConn = conn as unknown as PeerConnection
+
+      conn.on('open', () => {
+        store.isConnected = true
+        send(peerConn, { type: 'join', role: 'player', playerId: pid, name })
+      })
+
+      conn.on('data', (data) => {
+        handleClientMessage(data as RoomMessage, peerConn)
+      })
+
+      conn.on('close', () => {
+        store.isConnected = false
+        store.connectionError = '보드판과의 연결이 끊어졌습니다.'
+      })
+
+      conn.on('error', () => {
+        store.connectionError = 'WebRTC 연결에 실패했습니다. 같은 Wi-Fi에 연결되어 있는지 확인해주세요.'
+        rejectJoin('WebRTC ICE 연결 실패')
+      })
+    })
+  })
+}
+
+function startGame(seats?: SeatMap) {
+  const store = useRoomStore()
+  if (!store.canStartGame) return
+  beginGame(seats)
+}
+
+function restartGame(seats?: SeatMap) {
+  const store = useRoomStore()
+  if (!store.isBoard || store.playerCount < 2) return
+  beginGame(seats)
+}
+
+function continueGame() {
+  if (!gameState.value) return
+  gameState.value = continueAfterRoundWin(gameState.value)
+  syncAllHands()
+}
+
+function beginGame(seats?: SeatMap) {
+  const store = useRoomStore()
+
+  const playerIds = store.connectedPlayers.map((p) => p.id)
+  const seatMap = seats ?? loadSeats() ?? autoAssignSeats(playerIds)
+  const orderedIds = turnOrderFromSeats(seatMap)
+
+  if (orderedIds.length < 2) return
+
+  const playerNames: Record<string, string> = {}
+  for (const p of store.connectedPlayers) {
+    playerNames[p.id] = p.name
+  }
+
+  gameState.value = createGame(orderedIds, playerNames)
+  store.gameStarted = true
+  store.playerHandPreviews = {}
+
+  broadcast({ type: 'game-start', turnOrder: gameState.value.turnOrder })
+  syncAllHands()
+}
+
+function drawToPlayer(targetPlayerId: string) {
+  if (!gameState.value) return
+  gameState.value = drawCardToPlayer(gameState.value, targetPlayerId)
+  syncAllHands()
+}
+
+function drawForPlayer(playerId: string): string | null {
+  if (!gameState.value) return '게임이 시작되지 않았습니다.'
+  if (gameState.value.phase !== 'playing') return '지금은 카드를 뽑을 수 없습니다.'
+  if (!gameState.value.turnOrder.includes(playerId)) return '이미 패를 모두 낸 플레이어입니다.'
+
+  const currentId = gameState.value.turnOrder[gameState.value.currentTurnIndex]
+  if (currentId === playerId) {
+    const result = playerDrawCards(gameState.value, playerId)
+    if (!result.ok) return result.reason
+    gameState.value = result.state
+  } else {
+    gameState.value = drawCardToPlayer(gameState.value, playerId)
+  }
+  syncAllHands()
+  return null
+}
+
+function undo() {
+  if (!gameState.value) return
+  gameState.value = undoLastAction(gameState.value)
+  syncAllHands()
+}
+
+function getBoardConnection(): PeerConnection | null {
+  const store = useRoomStore()
+  return store.connectedPlayers[0]?.connection ?? null
+}
+
+function sendToBoard(msg: RoomMessage) {
+  const conn = getBoardConnection()
+  if (conn) send(conn, msg)
+}
+
+function sendPlayCard(cardId: string, chosenColor?: CardColor) {
+  const store = useRoomStore()
+  sendToBoard({
+    type: 'play-card',
+    playerId: store.playerId,
+    cardId,
+    chosenColor,
+  })
+}
+
+function sendRequestDraw() {
+  const store = useRoomStore()
+  sendToBoard({ type: 'request-draw', playerId: store.playerId })
+}
+
+function sendDeclareOneCard() {
+  const store = useRoomStore()
+  sendToBoard({ type: 'declare-onecard', playerId: store.playerId })
+}
+
+function sendHandPreview(cardId: string | null) {
+  const store = useRoomStore()
+  sendToBoard({ type: 'hand-preview', playerId: store.playerId, cardId })
+}
+
+function destroy() {
+  const store = useRoomStore()
+  clearJoinPending()
+  for (const p of store.connectedPlayers) {
+    p.connection.close()
+  }
+  peer.value?.destroy()
+  peer.value = null
+  gameState.value = null
+  store.reset()
+}
+
+export function usePeerRoom() {
+  return {
+    peer,
+    gameState,
+    hostRoom,
+    joinRoom,
+    startGame,
+    restartGame,
+    continueGame,
+    drawToPlayer,
+    drawForPlayer,
+    undo,
+    sendPlayCard,
+    sendRequestDraw,
+    sendDeclareOneCard,
+    sendHandPreview,
+    destroy,
+    syncAllHands,
+  }
+}
@@ -0,0 +1,50 @@
+import type { PeerJSOption } from 'peerjs'
+
+/**
+ * PeerJS 기본 TURN(turn.peerjs.com)이 중단되어 ICE 연결이 실패합니다.
+ * STUN + 공개 TURN 릴레이를 명시적으로 설정합니다.
+ *
+ * 자체 TURN 서버가 있으면 .env에 설정:
+ *   VITE_TURN_URLS=turn:your.server:3478
+ *   VITE_TURN_USERNAME=...
+ *   VITE_TURN_CREDENTIAL=...
+ */
+function buildIceServers(): RTCIceServer[] {
+  const servers: RTCIceServer[] = [
+    { urls: 'stun:stun.l.google.com:19302' },
+  ]
+
+  const customTurnUrls = import.meta.env.VITE_TURN_URLS
+  if (customTurnUrls) {
+    servers.push({
+      urls: customTurnUrls.split(',').map((u: string) => u.trim()),
+      username: import.meta.env.VITE_TURN_USERNAME,
+      credential: import.meta.env.VITE_TURN_CREDENTIAL,
+    })
+  } else {
+    const relay = {
+      username: 'openrelayproject',
+      credential: 'openrelayproject',
+    }
+    servers.push(
+      { urls: ['turn:openrelay.metered.ca:80', 'turn:openrelay.metered.ca:443'], ...relay },
+    )
+  }
+
+  return servers
+}
+
+export function createPeerOptions(id?: string): PeerJSOption {
+  return {
+    ...(id ? {} : {}),
+    host: '0.peerjs.com',
+    port: 443,
+    path: '/',
+    secure: true,
+    debug: import.meta.env.DEV ? 1 : 0,
+    config: {
+      iceServers: buildIceServers(),
+      iceCandidatePoolSize: 10,
+    },
+  }
+}
@@ -0,0 +1,25 @@
+import type { Card, CardColor, CardValue } from './types'
+
+export const COLOR_STYLES: Record<CardColor, { bg: string; text: string; label: string }> = {
+  red: { bg: '#c0392b', text: '#fff', label: '빨강' },
+  yellow: { bg: '#f1c40f', text: '#1a1a1a', label: '노랑' },
+  green: { bg: '#27ae60', text: '#fff', label: '초록' },
+  blue: { bg: '#2980b9', text: '#fff', label: '파랑' },
+  wild: { bg: '#2c3e50', text: '#fff', label: '와일드' },
+}
+
+export function getCardLabel(value: CardValue): string {
+  const map: Record<string, string> = {
+    skip: '⊘',
+    reverse: '⇄',
+    draw2: '+2',
+    wild: '★',
+    wild4: '+4',
+  }
+  return map[value] ?? value
+}
+
+export function getCardDisplayColor(card: Card, activeColor: CardColor | null): CardColor {
+  if (card.color !== 'wild') return card.color
+  return activeColor ?? 'wild'
+}
@@ -0,0 +1,56 @@
+import type { Card, CardColor, CardValue } from './types'
+
+const COLORS: CardColor[] = ['red', 'yellow', 'green', 'blue']
+const NUMBER_VALUES: CardValue[] = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
+const ACTION_VALUES: CardValue[] = ['skip', 'reverse', 'draw2']
+
+let cardIdCounter = 0
+
+function makeCard(color: CardColor, value: CardValue): Card {
+  return { id: `card-${cardIdCounter++}`, color, value }
+}
+
+export function createDeck(): Card[] {
+  cardIdCounter = 0
+  const deck: Card[] = []
+
+  for (const color of COLORS) {
+    deck.push(makeCard(color, '0'))
+    for (const value of NUMBER_VALUES.slice(1)) {
+      deck.push(makeCard(color, value), makeCard(color, value))
+    }
+    for (const value of ACTION_VALUES) {
+      deck.push(makeCard(color, value), makeCard(color, value))
+    }
+  }
+
+  for (let i = 0; i < 4; i++) {
+    deck.push(makeCard('wild', 'wild'), makeCard('wild', 'wild4'))
+  }
+
+  return shuffle(deck)
+}
+
+export function shuffle<T>(array: T[]): T[] {
+  const result = [...array]
+  for (let i = result.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1))
+    const tmp = result[i]!
+    result[i] = result[j]!
+    result[j] = tmp
+  }
+  return result
+}
+
+export function drawRandom(deck: Card[]): { card: Card; deck: Card[] } | null {
+  if (deck.length === 0) return null
+  const index = Math.floor(Math.random() * deck.length)
+  const card = deck[index]!
+  const newDeck = [...deck.slice(0, index), ...deck.slice(index + 1)]
+  return { card, deck: newDeck }
+}
+
+export function returnToDeckRandom(deck: Card[], card: Card): Card[] {
+  const index = Math.floor(Math.random() * (deck.length + 1))
+  return [...deck.slice(0, index), card, ...deck.slice(index)]
+}
@@ -0,0 +1,378 @@
+import { createDeck, drawRandom, returnToDeckRandom } from './deck'
+import { popAction, pushAction } from './history'
+import { canPlayCard, cardNeedsColorChoice } from './rules'
+import type {
+  Card,
+  CardColor,
+  DrawCardsResult,
+  GameAction,
+  GameState,
+  PlayCardResult,
+  PlayerInfo,
+  PublicGameState,
+  TurnDirection,
+} from './types'
+
+const INITIAL_HAND_SIZE = 7
+
+function updatePlayerCounts(players: PlayerInfo[], hands: Record<string, Card[]>): PlayerInfo[] {
+  return players.map((p) => ({
+    ...p,
+    handCount: hands[p.id]?.length ?? 0,
+  }))
+}
+
+function drawStartCard(deck: Card[]): { card: Card; deck: Card[] } | null {
+  let current = deck
+  for (let i = 0; i < 20; i++) {
+    const result = drawRandom(current)
+    if (!result) return null
+    if (result.card.value !== 'wild4') {
+      return result
+    }
+    current = result.deck
+  }
+  return drawRandom(deck)
+}
+
+export function createGame(playerIds: string[], playerNames: Record<string, string>): GameState {
+  let deck = createDeck()
+  const hands: Record<string, Card[]> = {}
+
+  for (const id of playerIds) {
+    const cards: Card[] = []
+    for (let i = 0; i < INITIAL_HAND_SIZE; i++) {
+      const result = drawRandom(deck)
+      if (!result) break
+      cards.push(result.card)
+      deck = result.deck
+    }
+    hands[id] = cards
+  }
+
+  const startResult = drawStartCard(deck)
+  const topCard = startResult?.card ?? null
+  if (startResult) deck = startResult.deck
+
+  const discardPile: Card[] = topCard ? [topCard] : []
+  let activeColor: CardColor | null = topCard && topCard.color !== 'wild' ? topCard.color : null
+
+  const players: PlayerInfo[] = playerIds.map((id) => ({
+    id,
+    name: playerNames[id] ?? `플레이어 ${id.slice(0, 4)}`,
+    handCount: hands[id]?.length ?? 0,
+    declaredOneCard: false,
+  }))
+
+  return {
+    phase: 'playing',
+    deck,
+    discardPile,
+    hands,
+    players,
+    currentTurnIndex: 0,
+    turnOrder: [...playerIds],
+    turnDirection: 1,
+    drawPenalty: 0,
+    activeColor,
+    winnerId: null,
+    history: [],
+  }
+}
+
+export function getTopCard(state: GameState): Card | null {
+  return state.discardPile[state.discardPile.length - 1] ?? null
+}
+
+export function getCurrentPlayerId(state: GameState): string | null {
+  return state.turnOrder[state.currentTurnIndex] ?? null
+}
+
+export function drawCardToPlayer(state: GameState, playerId: string): GameState {
+  const result = drawRandom(state.deck)
+  if (!result) return state
+
+  const newHands = {
+    ...state.hands,
+    [playerId]: [...(state.hands[playerId] ?? []), result.card],
+  }
+
+  const action: GameAction = { type: 'draw', playerId, card: result.card }
+
+  return {
+    ...state,
+    deck: result.deck,
+    hands: newHands,
+    players: resetDeclarations(updatePlayerCounts(state.players, newHands)),
+    history: pushAction(state.history, action),
+  }
+}
+
+export function playerDrawCards(state: GameState, playerId: string): DrawCardsResult {
+  if (state.phase !== 'playing') return { ok: false, reason: '게임이 진행 중이 아닙니다.' }
+  if (!state.turnOrder.includes(playerId)) {
+    return { ok: false, reason: '이미 패를 모두 낸 플레이어입니다.' }
+  }
+  if (getCurrentPlayerId(state) !== playerId) return { ok: false, reason: '내 턴이 아닙니다.' }
+
+  const count = state.drawPenalty > 0 ? state.drawPenalty : 1
+  let next = state
+
+  for (let i = 0; i < count; i++) {
+    const result = drawRandom(next.deck)
+    if (!result) return { ok: false, reason: '덱에 카드가 없습니다.' }
+    const newHands = {
+      ...next.hands,
+      [playerId]: [...(next.hands[playerId] ?? []), result.card],
+    }
+    next = {
+      ...next,
+      deck: result.deck,
+      hands: newHands,
+      players: resetDeclarations(updatePlayerCounts(next.players, newHands)),
+      history: pushAction(next.history, { type: 'draw', playerId, card: result.card }),
+    }
+  }
+
+  next = {
+    ...next,
+    drawPenalty: 0,
+    ...advanceTurn(next),
+  }
+
+  return { ok: true, state: next }
+}
+
+export function playCard(
+  state: GameState,
+  playerId: string,
+  cardId: string,
+  chosenColor?: CardColor,
+): PlayCardResult {
+  if (state.phase !== 'playing') return { ok: false, reason: '게임이 진행 중이 아닙니다.' }
+  if (!state.turnOrder.includes(playerId)) {
+    return { ok: false, reason: '이미 패를 모두 낸 플레이어입니다.' }
+  }
+  if (getCurrentPlayerId(state) !== playerId) return { ok: false, reason: '내 턴이 아닙니다.' }
+
+  const topCard = getTopCard(state)
+  if (!topCard) return { ok: false, reason: '버린 더미가 없습니다.' }
+
+  const hand = state.hands[playerId] ?? []
+  const card = hand.find((c) => c.id === cardId)
+  if (!card) return { ok: false, reason: '카드를 찾을 수 없습니다.' }
+
+  if (!canPlayCard(card, topCard, state.activeColor, state.drawPenalty)) {
+    return { ok: false, reason: '낼 수 없는 카드입니다.' }
+  }
+
+  if (cardNeedsColorChoice(card) && !chosenColor) {
+    return { ok: false, reason: '색상을 선택해주세요.' }
+  }
+
+  const newHand = hand.filter((c) => c.id !== cardId)
+  const playedCard = cardNeedsColorChoice(card) && chosenColor
+    ? { ...card, color: chosenColor }
+    : card
+
+  const prevTop = topCard
+  const prevActiveColor = state.activeColor
+  const prevTurnIndex = state.currentTurnIndex
+  const prevDirection = state.turnDirection
+  const prevDrawPenalty = state.drawPenalty
+
+  let next: GameState = {
+    ...state,
+    hands: { ...state.hands, [playerId]: newHand },
+    discardPile: [...state.discardPile, playedCard],
+    activeColor: cardNeedsColorChoice(card) ? chosenColor! : playedCard.color,
+    players: updatePlayerCounts(
+      state.players.map((p) =>
+        p.id === playerId ? { ...p, declaredOneCard: false } : p,
+      ),
+      { ...state.hands, [playerId]: newHand },
+    ),
+    history: pushAction(state.history, {
+      type: 'play',
+      playerId,
+      card: playedCard,
+      chosenColor,
+      prevTop,
+      prevActiveColor,
+      prevTurnIndex,
+      prevDirection,
+      prevDrawPenalty,
+    }),
+  }
+
+  if (newHand.length === 0) {
+    next = { ...next, phase: 'round_won', winnerId: playerId }
+    return { ok: true, state: next }
+  }
+
+  next = applyCardEffect(next, playedCard)
+  return { ok: true, state: next }
+}
+
+function applyCardEffect(state: GameState, card: Card): GameState {
+  const playerCount = state.turnOrder.length
+  let next = { ...state }
+
+  switch (card.value) {
+    case 'skip':
+      next = { ...next, ...advanceTurn(next) }
+      next = { ...next, ...advanceTurn(next) }
+      break
+    case 'reverse':
+      if (playerCount === 2) {
+        next = { ...next, ...advanceTurn(next) }
+        next = { ...next, ...advanceTurn(next) }
+      } else {
+        next = { ...next, turnDirection: (next.turnDirection * -1) as TurnDirection }
+        next = { ...next, ...advanceTurn(next) }
+      }
+      break
+    case 'draw2':
+      next = { ...next, drawPenalty: next.drawPenalty + 2 }
+      next = { ...next, ...advanceTurn(next) }
+      break
+    case 'wild4':
+      next = { ...next, drawPenalty: next.drawPenalty + 4 }
+      next = { ...next, ...advanceTurn(next) }
+      break
+    case 'wild':
+      next = { ...next, ...advanceTurn(next) }
+      break
+    default:
+      next = { ...next, drawPenalty: 0 }
+      next = { ...next, ...advanceTurn(next) }
+      break
+  }
+
+  return next
+}
+
+function advanceTurn(state: GameState): Pick<GameState, 'currentTurnIndex'> {
+  const len = state.turnOrder.length
+  if (len === 0) return { currentTurnIndex: 0 }
+  let idx = state.currentTurnIndex + state.turnDirection
+  if (idx < 0) idx = len - 1
+  if (idx >= len) idx = 0
+  return { currentTurnIndex: idx }
+}
+
+function resetDeclarations(players: PlayerInfo[]): PlayerInfo[] {
+  return players.map((p) => ({ ...p, declaredOneCard: false }))
+}
+
+export function declareOneCard(state: GameState, playerId: string): GameState {
+  return {
+    ...state,
+    players: state.players.map((p) =>
+      p.id === playerId ? { ...p, declaredOneCard: true } : p,
+    ),
+  }
+}
+
+export function undoLastAction(state: GameState): GameState {
+  const { action, history } = popAction(state.history)
+  if (!action) return state
+
+  if (action.type === 'draw') {
+    const playerHand = state.hands[action.playerId] ?? []
+    const newHand = playerHand.filter((c) => c.id !== action.card.id)
+    const newHands = { ...state.hands, [action.playerId]: newHand }
+    return {
+      ...state,
+      deck: returnToDeckRandom(state.deck, action.card),
+      hands: newHands,
+      players: updatePlayerCounts(state.players, newHands),
+      history,
+      phase: 'playing',
+      winnerId: null,
+    }
+  }
+
+  if (action.type === 'play') {
+    const pile = [...state.discardPile]
+    pile.pop()
+    const hand = [...(state.hands[action.playerId] ?? []), action.card]
+    const newHands = { ...state.hands, [action.playerId]: hand }
+    return {
+      ...state,
+      discardPile: pile,
+      activeColor: action.prevActiveColor,
+      currentTurnIndex: action.prevTurnIndex,
+      turnDirection: action.prevDirection,
+      drawPenalty: action.prevDrawPenalty,
+      hands: newHands,
+      players: updatePlayerCounts(state.players, newHands),
+      history,
+      phase: 'playing',
+      winnerId: null,
+    }
+  }
+
+  return state
+}
+
+export function canUndo(state: GameState): boolean {
+  return state.history.length > 0
+}
+
+/** 패를 모두 낸 뒤 이어하기 — 승자는 제외하고 남은 플레이어끼리 계속 */
+export function continueAfterRoundWin(state: GameState): GameState {
+  if (state.phase !== 'round_won' || !state.winnerId) return state
+
+  const winnerId = state.winnerId
+  const remainingOrder = state.turnOrder.filter((id) => id !== winnerId)
+
+  if (remainingOrder.length <= 1) {
+    return { ...state, phase: 'finished' }
+  }
+
+  const { turnOrder, turnDirection } = state
+  const winnerIdx = turnOrder.indexOf(winnerId)
+  let idx = winnerIdx
+  let nextPlayerId: string | undefined
+
+  for (let i = 0; i < turnOrder.length - 1; i++) {
+    idx = (idx + turnDirection + turnOrder.length) % turnOrder.length
+    const candidate = turnOrder[idx]
+    if (candidate !== winnerId) {
+      nextPlayerId = candidate
+      break
+    }
+  }
+
+  const nextTurnIndex = nextPlayerId
+    ? remainingOrder.indexOf(nextPlayerId)
+    : 0
+
+  return {
+    ...state,
+    phase: 'playing',
+    winnerId: null,
+    turnOrder: remainingOrder,
+    currentTurnIndex: nextTurnIndex >= 0 ? nextTurnIndex : 0,
+  }
+}
+
+export function toPublicState(state: GameState): PublicGameState {
+  const winner = state.winnerId
+    ? state.players.find((p) => p.id === state.winnerId)
+    : null
+  return {
+    phase: state.phase,
+    deckCount: state.deck.length,
+    players: state.players,
+    currentTurnIndex: state.currentTurnIndex,
+    turnOrder: state.turnOrder,
+    topCard: getTopCard(state),
+    turnDirection: state.turnDirection,
+    drawPenalty: state.drawPenalty,
+    activeColor: state.activeColor,
+    winnerId: state.winnerId,
+    winnerName: winner?.name ?? null,
+  }
+}
@@ -0,0 +1,11 @@
+import type { GameAction } from './types'
+
+export function pushAction(history: GameAction[], action: GameAction): GameAction[] {
+  return [...history, action]
+}
+
+export function popAction(history: GameAction[]): { action: GameAction | null; history: GameAction[] } {
+  if (history.length === 0) return { action: null, history }
+  const action = history[history.length - 1]!
+  return { action, history: history.slice(0, -1) }
+}
@@ -0,0 +1,42 @@
+import type { Card, CardColor, CardValue } from './types'
+
+export function getEffectiveColor(card: Card, activeColor: CardColor | null): CardColor {
+  if (card.color !== 'wild' && card.color) return card.color
+  return activeColor ?? 'wild'
+}
+
+export function canPlayCard(
+  card: Card,
+  topCard: Card,
+  activeColor: CardColor | null,
+  drawPenalty: number,
+): boolean {
+  if (drawPenalty > 0) {
+    return card.value === 'draw2' || card.value === 'wild4'
+  }
+
+  if (card.color === 'wild') return true
+
+  const topColor = getEffectiveColor(topCard, activeColor)
+  if (card.color === topColor) return true
+  if (card.value === topCard.value) return true
+
+  return false
+}
+
+export function getPlayableCards(
+  hand: Card[],
+  topCard: Card,
+  activeColor: CardColor | null,
+  drawPenalty: number,
+): Card[] {
+  return hand.filter((c) => canPlayCard(c, topCard, activeColor, drawPenalty))
+}
+
+export function isActionCard(value: CardValue): boolean {
+  return value === 'skip' || value === 'reverse' || value === 'draw2' || value === 'wild' || value === 'wild4'
+}
+
+export function cardNeedsColorChoice(card: Card): boolean {
+  return card.color === 'wild'
+}
@@ -0,0 +1,82 @@
+export type CardColor = 'red' | 'yellow' | 'green' | 'blue' | 'wild'
+
+export type CardValue =
+  | '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'
+  | 'skip' | 'reverse' | 'draw2' | 'wild' | 'wild4'
+
+export interface Card {
+  id: string
+  color: CardColor
+  value: CardValue
+}
+
+export interface PlayerInfo {
+  id: string
+  name: string
+  handCount: number
+  declaredOneCard?: boolean
+}
+
+export type GamePhase = 'waiting' | 'playing' | 'paused' | 'round_won' | 'finished'
+
+export type TurnDirection = 1 | -1
+
+export interface PublicGameState {
+  phase: GamePhase
+  deckCount: number
+  players: PlayerInfo[]
+  currentTurnIndex: number
+  turnOrder: string[]
+  topCard: Card | null
+  turnDirection: TurnDirection
+  drawPenalty: number
+  activeColor: CardColor | null
+  winnerId: string | null
+  winnerName: string | null
+}
+
+export interface GameState {
+  phase: GamePhase
+  deck: Card[]
+  discardPile: Card[]
+  hands: Record<string, Card[]>
+  players: PlayerInfo[]
+  currentTurnIndex: number
+  turnOrder: string[]
+  turnDirection: TurnDirection
+  drawPenalty: number
+  activeColor: CardColor | null
+  winnerId: string | null
+  history: GameAction[]
+}
+
+export type GameAction =
+  | { type: 'draw'; playerId: string; card: Card }
+  | {
+      type: 'play'
+      playerId: string
+      card: Card
+      chosenColor?: CardColor
+      prevTop: Card
+      prevActiveColor: CardColor | null
+      prevTurnIndex: number
+      prevDirection: TurnDirection
+      prevDrawPenalty: number
+    }
+
+export type RoomRole = 'board' | 'player'
+
+export interface SessionInfo {
+  roomCode: string
+  role: RoomRole
+  playerId: string
+  playerName?: string
+}
+
+export type PlayCardResult =
+  | { ok: true; state: GameState }
+  | { ok: false; reason: string }
+
+export type DrawCardsResult =
+  | { ok: true; state: GameState }
+  | { ok: false; reason: string }
@@ -0,0 +1,12 @@
+import { createApp } from 'vue'
+import { createPinia } from 'pinia'
+
+import App from './App.vue'
+import router from './router'
+
+const app = createApp(App)
+
+app.use(createPinia())
+app.use(router)
+
+app.mount('#app')
@@ -0,0 +1,30 @@
+import { createRouter, createWebHistory } from 'vue-router'
+import HomeView from '@/views/HomeView.vue'
+
+const router = createRouter({
+  history: createWebHistory(import.meta.env.BASE_URL),
+  routes: [
+    {
+      path: '/',
+      name: 'home',
+      component: HomeView,
+    },
+    {
+      path: '/onecard/lobby',
+      name: 'onecard-lobby',
+      component: () => import('@/views/onecard/OneCardLobbyView.vue'),
+    },
+    {
+      path: '/onecard/board',
+      name: 'onecard-board',
+      component: () => import('@/views/onecard/OneCardBoardView.vue'),
+    },
+    {
+      path: '/onecard/player',
+      name: 'onecard-player',
+      component: () => import('@/views/onecard/OneCardPlayerView.vue'),
+    },
+  ],
+})
+
+export default router
@@ -0,0 +1,89 @@
+import { ref, computed } from 'vue'
+import { defineStore } from 'pinia'
+import type { Card, PublicGameState, RoomRole } from '@/games/onecard/types'
+import type { ConnectedPlayer } from '@/composables/messages'
+
+export const useRoomStore = defineStore('room', () => {
+  const roomCode = ref('')
+  const role = ref<RoomRole | null>(null)
+  const playerId = ref('')
+  const playerName = ref('')
+  const isConnected = ref(false)
+  const connectionError = ref('')
+  const players = ref<{ id: string; name: string }[]>([])
+  const connectedPlayers = ref<ConnectedPlayer[]>([])
+  const gameStarted = ref(false)
+  const publicState = ref<PublicGameState | null>(null)
+  const myHand = ref<Card[]>([])
+  const playerHandPreviews = ref<Record<string, string | null>>({})
+  const statusMessage = ref('')
+
+  const isBoard = computed(() => role.value === 'board')
+  const isPlayer = computed(() => role.value === 'player')
+  const playerCount = computed(() => players.value.length)
+  const canStartGame = computed(() => isBoard.value && playerCount.value >= 2 && !gameStarted.value)
+  const totalDevices = computed(() => (isBoard.value ? 1 + playerCount.value : 0))
+  const currentTurnPlayerId = computed(() => {
+    if (!publicState.value) return null
+    return publicState.value.turnOrder[publicState.value.currentTurnIndex] ?? null
+  })
+
+  function reset() {
+    roomCode.value = ''
+    role.value = null
+    playerId.value = ''
+    playerName.value = ''
+    isConnected.value = false
+    connectionError.value = ''
+    players.value = []
+    connectedPlayers.value = []
+    gameStarted.value = false
+    publicState.value = null
+    myHand.value = []
+    playerHandPreviews.value = {}
+    statusMessage.value = ''
+  }
+
+  function setPlayerHandPreview(playerId: string, cardId: string | null) {
+    playerHandPreviews.value = { ...playerHandPreviews.value, [playerId]: cardId }
+  }
+
+  function clearPlayerHandPreview(playerId: string) {
+    const next = { ...playerHandPreviews.value }
+    delete next[playerId]
+    playerHandPreviews.value = next
+  }
+
+  function setStatus(msg: string) {
+    statusMessage.value = msg
+    setTimeout(() => {
+      if (statusMessage.value === msg) statusMessage.value = ''
+    }, 3000)
+  }
+
+  return {
+    roomCode,
+    role,
+    playerId,
+    playerName,
+    isConnected,
+    connectionError,
+    players,
+    connectedPlayers,
+    gameStarted,
+    publicState,
+    myHand,
+    playerHandPreviews,
+    statusMessage,
+    isBoard,
+    isPlayer,
+    playerCount,
+    canStartGame,
+    totalDevices,
+    currentTurnPlayerId,
+    reset,
+    setPlayerHandPreview,
+    clearPlayerHandPreview,
+    setStatus,
+  }
+})
@@ -0,0 +1,146 @@
+export const MAX_PLAYERS = 4
+
+/** 시계 방향: 아래 → 왼쪽 → 위 → 오른쪽 (보드판 기준) */
+export const CORNERS_CLOCKWISE = ['bottom', 'left', 'top', 'right'] as const
+export type BoardCorner = (typeof CORNERS_CLOCKWISE)[number]
+
+export type SeatMap = Record<BoardCorner, string | null>
+
+export const CORNER_LABELS: Record<BoardCorner, string> = {
+  bottom: '아래',
+  left: '왼쪽',
+  top: '위',
+  right: '오른쪽',
+}
+
+const SEAT_KEY = 'tabletop-board-seats'
+
+export function emptySeats(): SeatMap {
+  return { bottom: null, left: null, top: null, right: null }
+}
+
+export function autoAssignSeats(playerIds: string[], current?: SeatMap): SeatMap {
+  const seats = current ? { ...current } : emptySeats()
+
+  for (const corner of CORNERS_CLOCKWISE) {
+    const id = seats[corner]
+    if (id && !playerIds.includes(id)) {
+      seats[corner] = null
+    }
+  }
+
+  const assigned = new Set(
+    CORNERS_CLOCKWISE.map((c) => seats[c]).filter((id): id is string => !!id),
+  )
+  const unassigned = playerIds.filter((id) => !assigned.has(id))
+
+  for (const id of unassigned) {
+    const emptyCorner = CORNERS_CLOCKWISE.find((c) => !seats[c])
+    if (!emptyCorner) break
+    seats[emptyCorner] = id
+  }
+
+  return seats
+}
+
+export function loadSeats(): SeatMap | null {
+  try {
+    const raw = sessionStorage.getItem(SEAT_KEY)
+    if (!raw) return null
+    const parsed = JSON.parse(raw) as SeatMap
+    return { ...emptySeats(), ...parsed }
+  } catch {
+    return null
+  }
+}
+
+export function saveSeats(seats: SeatMap): void {
+  sessionStorage.setItem(SEAT_KEY, JSON.stringify(seats))
+}
+
+export function clearSeats(): void {
+  sessionStorage.removeItem(SEAT_KEY)
+}
+
+export function turnOrderFromSeats(seats: SeatMap): string[] {
+  return CORNERS_CLOCKWISE
+    .map((c) => seats[c])
+    .filter((id): id is string => !!id)
+}
+
+export function assignedPlayerCount(seats: SeatMap): number {
+  return turnOrderFromSeats(seats).length
+}
+
+export function playerAtCorner(seats: SeatMap, corner: BoardCorner): string | null {
+  return seats[corner]
+}
+
+export function cornerForPlayer(seats: SeatMap, playerId: string): BoardCorner | null {
+  for (const corner of CORNERS_CLOCKWISE) {
+    if (seats[corner] === playerId) return corner
+  }
+  return null
+}
+
+/** 플레이어를 해당 모서리로 옮김(기존 자리 비움). 대상 자리에 있던 플레이어는 미배치로 돌아감. */
+export function assignPlayerToCorner(
+  seats: SeatMap,
+  corner: BoardCorner,
+  playerId: string | null,
+): SeatMap {
+  const next = { ...seats }
+
+  if (playerId === null) {
+    next[corner] = null
+    return next
+  }
+
+  for (const c of CORNERS_CLOCKWISE) {
+    if (next[c] === playerId) next[c] = null
+  }
+  next[corner] = playerId
+  return next
+}
+
+/** 드롭: 빈 자리면 이동, occupied면 맞바꿈. 미배치에서 드롭 시 기존 자리 플레이어는 미배치. */
+export function dropPlayerOnCorner(
+  seats: SeatMap,
+  targetCorner: BoardCorner,
+  playerId: string,
+): SeatMap {
+  const next = { ...seats }
+  const sourceCorner = cornerForPlayer(next, playerId)
+
+  if (sourceCorner === targetCorner) return next
+
+  const occupantId = next[targetCorner]
+
+  if (sourceCorner) {
+    if (occupantId) {
+      next[sourceCorner] = occupantId
+      next[targetCorner] = playerId
+    } else {
+      next[sourceCorner] = null
+      next[targetCorner] = playerId
+    }
+  } else {
+    next[targetCorner] = playerId
+  }
+
+  return next
+}
+
+export function dropPlayerOnPool(seats: SeatMap, playerId: string): SeatMap {
+  const sourceCorner = cornerForPlayer(seats, playerId)
+  if (!sourceCorner) return seats
+  return { ...seats, [sourceCorner]: null }
+}
+
+export function getPlayerById(
+  players: { id: string; name: string; handCount?: number }[],
+  id: string | null,
+) {
+  if (!id) return null
+  return players.find((p) => p.id === id) ?? null
+}
@@ -0,0 +1,45 @@
+/**
+ * HTTP(LAN IP) 등 비보안 컨텍스트에서도 동작하는 클립보드 복사.
+ * navigator.clipboard 실패 시 execCommand 폴백 사용.
+ */
+export async function copyToClipboard(text: string): Promise<boolean> {
+  if (navigator.clipboard?.writeText) {
+    try {
+      await navigator.clipboard.writeText(text)
+      return true
+    } catch {
+      // secure context가 아니면 실패 → 폴백
+    }
+  }
+
+  const textarea = document.createElement('textarea')
+  textarea.value = text
+  textarea.setAttribute('readonly', '')
+  textarea.style.position = 'fixed'
+  textarea.style.top = '0'
+  textarea.style.left = '0'
+  textarea.style.width = '2em'
+  textarea.style.height = '2em'
+  textarea.style.padding = '0'
+  textarea.style.border = 'none'
+  textarea.style.outline = 'none'
+  textarea.style.boxShadow = 'none'
+  textarea.style.background = 'transparent'
+  textarea.style.opacity = '0'
+  document.body.appendChild(textarea)
+
+  textarea.focus()
+  textarea.select()
+  textarea.setSelectionRange(0, text.length)
+
+  let success = false
+  try {
+    success = document.execCommand('copy')
+  } catch {
+    success = false
+  } finally {
+    document.body.removeChild(textarea)
+  }
+
+  return success
+}
@@ -0,0 +1,57 @@
+import type { SessionInfo } from '@/games/onecard/types'
+
+const SESSION_KEY = 'tabletop-session'
+const PLAYER_NAME_KEY = 'tabletop-player-name'
+
+export function saveSession(info: SessionInfo): void {
+  sessionStorage.setItem(SESSION_KEY, JSON.stringify(info))
+}
+
+export function loadSession(): SessionInfo | null {
+  const raw = sessionStorage.getItem(SESSION_KEY)
+  if (!raw) return null
+  try {
+    return JSON.parse(raw) as SessionInfo
+  } catch {
+    return null
+  }
+}
+
+export function clearSession(): void {
+  sessionStorage.removeItem(SESSION_KEY)
+}
+
+export function loadSavedPlayerName(): string {
+  try {
+    return localStorage.getItem(PLAYER_NAME_KEY) ?? ''
+  } catch {
+    return ''
+  }
+}
+
+export function savePlayerName(name: string): void {
+  const trimmed = name.trim()
+  if (!trimmed) return
+  try {
+    localStorage.setItem(PLAYER_NAME_KEY, trimmed)
+  } catch {
+    // private browsing 등
+  }
+}
+
+export function generateRoomCode(): string {
+  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789'
+  let code = ''
+  for (let i = 0; i < 6; i++) {
+    code += chars[Math.floor(Math.random() * chars.length)]
+  }
+  return code
+}
+
+export function generatePlayerId(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID()
+  }
+  // HTTP(LAN IP) 등 비보안 컨텍스트에서는 randomUUID 미지원
+  return `p-${Date.now().toString(36)}-${Math.random().toString(36).slice(2, 10)}`
+}
@@ -0,0 +1,178 @@
+<script setup lang="ts">
+import { useRouter } from 'vue-router'
+
+const router = useRouter()
+
+let tapLock = false
+
+/** 구형 Safari(iOS) 스크롤 영역·300ms 지연 대응: click + touchend 모두 처리 */
+function enterOneCard(e?: Event) {
+  e?.preventDefault()
+  if (tapLock) return
+  tapLock = true
+  router.push('/onecard/lobby').finally(() => {
+    window.setTimeout(() => { tapLock = false }, 400)
+  })
+}
+</script>
+
+<template>
+  <main class="home">
+    <header class="home-header">
+      <h1 class="title">Tabletop</h1>
+      <p class="subtitle">보드게임 시뮬레이터</p>
+    </header>
+
+    <section class="games">
+      <button
+        type="button"
+        class="game-card"
+        @click="enterOneCard"
+        @touchend.prevent="enterOneCard"
+      >
+        <span class="game-icon" aria-hidden="true">🃏</span>
+        <span class="game-title">원카드</span>
+        <span class="game-desc">멀티 디바이스 원카드 시뮬레이터</span>
+      </button>
+    </section>
+  </main>
+</template>
+
+<style scoped>
+.home {
+  min-height: 100vh;
+  min-height: 100dvh;
+  overflow-x: hidden;
+  overflow-y: auto;
+  -webkit-overflow-scrolling: touch;
+  overscroll-behavior: contain;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 48px 24px 32px;
+  padding-bottom: calc(32px + env(safe-area-inset-bottom, 0px));
+}
+
+.home-header {
+  flex-shrink: 0;
+  text-align: center;
+}
+
+.title {
+  font-size: 2.5rem;
+  font-weight: 800;
+  background: linear-gradient(135deg, #a29bfe, #6c5ce7);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+}
+
+.subtitle {
+  color: #888;
+  margin-top: 8px;
+  margin-bottom: 48px;
+}
+
+.games {
+  flex-shrink: 0;
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  width: 100%;
+  max-width: 480px;
+}
+
+/* gap 미지원 Safari 폴백 불필요 — 단일 카드 */
+
+.game-card {
+  display: block;
+  width: 220px;
+  min-height: 44px;
+  padding: 32px 24px;
+  border-radius: 16px;
+  border: 2px solid #333;
+  background: #2a2a4a;
+  color: #eee;
+  cursor: pointer;
+  text-align: center;
+  font: inherit;
+  -webkit-appearance: none;
+  appearance: none;
+  -webkit-tap-highlight-color: rgba(108, 92, 231, 0.25);
+  touch-action: manipulation;
+  -webkit-user-select: none;
+  user-select: none;
+  transition: border-color 0.15s, background 0.15s, -webkit-transform 0.15s, transform 0.15s;
+}
+
+.game-card:hover {
+  border-color: #6c5ce7;
+}
+
+.game-card:active {
+  border-color: #6c5ce7;
+  background: #353560;
+  -webkit-transform: scale(0.98);
+  transform: scale(0.98);
+}
+
+.game-icon {
+  display: block;
+  font-size: 3rem;
+  margin-bottom: 12px;
+  pointer-events: none;
+}
+
+.game-title {
+  display: block;
+  font-size: 1.3rem;
+  font-weight: 700;
+  margin-bottom: 8px;
+  pointer-events: none;
+}
+
+.game-desc {
+  display: block;
+  font-size: 0.85rem;
+  color: #888;
+  pointer-events: none;
+}
+
+@media (orientation: landscape) and (max-height: 520px) {
+  .home {
+    padding: 16px 20px 20px;
+    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
+    justify-content: flex-start;
+  }
+
+  .title {
+    font-size: 1.75rem;
+  }
+
+  .subtitle {
+    margin-top: 4px;
+    margin-bottom: 20px;
+    font-size: 0.9rem;
+  }
+
+  .game-card {
+    width: 220px;
+    max-width: 100%;
+    padding: 20px 18px;
+  }
+
+  .game-icon {
+    font-size: 2.2rem;
+    margin-bottom: 8px;
+  }
+
+  .game-title {
+    font-size: 1.1rem;
+    margin-bottom: 4px;
+  }
+
+  .game-desc {
+    font-size: 0.8rem;
+  }
+}
+</style>
@@ -0,0 +1,380 @@
+<script setup lang="ts">
+import { ref, computed, watch, onMounted, onUnmounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useRoomStore } from '@/stores/roomStore'
+import { usePeerRoom } from '@/composables/usePeerRoom'
+import { loadSession } from '@/utils/session'
+import { canUndo } from '@/games/onecard/game'
+import {
+  CORNERS_CLOCKWISE,
+  autoAssignSeats,
+  assignedPlayerCount,
+  emptySeats,
+  loadSeats,
+  saveSeats,
+  type BoardCorner,
+  type SeatMap,
+  MAX_PLAYERS,
+} from '@/utils/boardLayout'
+import RoomCodeDisplay from '@/components/RoomCodeDisplay.vue'
+import BoardSeatPicker from '@/components/BoardSeatPicker.vue'
+import BoardCornerZone from '@/components/BoardCornerZone.vue'
+import DeckView from '@/components/DeckView.vue'
+import DiscardPileView from '@/components/DiscardPileView.vue'
+import UndoTurnButton from '@/components/UndoTurnButton.vue'
+import ExitButton from '@/components/ExitButton.vue'
+
+const router = useRouter()
+const store = useRoomStore()
+const { hostRoom, startGame, restartGame, continueGame, drawForPlayer, undo, destroy, gameState } = usePeerRoom()
+
+const isReady = ref(false)
+const seatMap = ref<SeatMap>(emptySeats())
+
+const publicState = computed(() => store.publicState)
+const players = computed(() => {
+  if (gameState.value) return gameState.value.players
+  return store.players.map((p) => ({ ...p, handCount: 0 }))
+})
+
+const currentTurnId = computed(() => store.currentTurnPlayerId)
+const undoDisabled = computed(() => !gameState.value || !canUndo(gameState.value))
+const isPlaying = computed(() => publicState.value?.phase === 'playing')
+const isRoundWon = computed(() => publicState.value?.phase === 'round_won')
+const isFinished = computed(() => publicState.value?.phase === 'finished')
+const deckCount = computed(() => publicState.value?.deckCount ?? null)
+
+const canStart = computed(
+  () => store.canStartGame && assignedPlayerCount(seatMap.value) >= 2,
+)
+
+function syncSeatsFromPlayers() {
+  if (store.gameStarted) return
+  const ids = store.players.map((p) => p.id)
+  seatMap.value = autoAssignSeats(ids, seatMap.value)
+  saveSeats(seatMap.value)
+}
+
+function updateSeats(next: SeatMap) {
+  seatMap.value = next
+  saveSeats(next)
+}
+
+function playerAtCorner(corner: BoardCorner) {
+  const id = seatMap.value[corner]
+  if (!id) return null
+  return players.value.find((p) => p.id === id) ?? null
+}
+
+function getPlayerPreviewIndex(playerId: string): number | null {
+  const cardId = store.playerHandPreviews[playerId]
+  if (!cardId || !gameState.value) return null
+  const hand = gameState.value.hands[playerId] ?? []
+  const idx = hand.findIndex((c) => c.id === cardId)
+  return idx >= 0 && idx < 14 ? idx : null
+}
+
+function previewForCorner(corner: BoardCorner) {
+  const player = playerAtCorner(corner)
+  return player ? getPlayerPreviewIndex(player.id) : null
+}
+
+watch(
+  () => store.players.map((p) => p.id).join(','),
+  syncSeatsFromPlayers,
+)
+
+onMounted(async () => {
+  const session = loadSession()
+  if (!session || session.role !== 'board') {
+    router.replace('/onecard/lobby')
+    return
+  }
+
+  store.roomCode = session.roomCode
+  store.role = session.role
+  store.playerId = session.playerId
+
+  seatMap.value = loadSeats() ?? emptySeats()
+
+  if (!store.isConnected) {
+    try {
+      await hostRoom(session.roomCode)
+    } catch {
+      router.replace('/onecard/lobby')
+      return
+    }
+  }
+
+  syncSeatsFromPlayers()
+  isReady.value = true
+})
+
+onUnmounted(() => {
+  destroy()
+})
+
+function handleStartGame() {
+  saveSeats(seatMap.value)
+  startGame(seatMap.value)
+}
+
+function handleDraw(playerId: string) {
+  if (!isPlaying.value) return
+  if (!store.gameStarted) {
+    store.setStatus('게임을 먼저 시작해주세요.')
+    return
+  }
+  const err = drawForPlayer(playerId)
+  if (err) store.setStatus(err)
+}
+
+function handleRestart() {
+  restartGame(seatMap.value)
+}
+
+function handleContinue() {
+  continueGame()
+}
+</script>
+
+<template>
+  <main v-if="isReady" class="board">
+    <RoomCodeDisplay :code="store.roomCode" compact />
+
+    <div class="top-actions">
+      <ExitButton />
+    </div>
+
+    <section v-if="!store.gameStarted" class="pre-game">
+      <p class="device-count">
+        접속: {{ 1 + store.playerCount }}대 · 플레이어 {{ store.playerCount }}/{{ MAX_PLAYERS }}명
+      </p>
+      <BoardSeatPicker
+        :seats="seatMap"
+        :players="store.players"
+        @update:seats="updateSeats"
+      />
+      <button
+        class="start-btn"
+        :disabled="!canStart"
+        @click="handleStartGame"
+      >
+        {{ canStart ? '게임 시작' : '플레이어 2명 이상 배치 필요' }}
+      </button>
+    </section>
+
+    <section v-else class="game-table">
+      <div v-if="isRoundWon" class="winner-banner round-won">
+        <p class="winner-text">🎉 {{ publicState?.winnerName }}님이 패를 모두 냈습니다!</p>
+        <p class="winner-sub">이어서 진행할까요, 새 게임을 시작할까요?</p>
+        <div class="winner-actions">
+          <button type="button" class="continue-btn" @click="handleContinue">
+            이어하기
+          </button>
+          <button type="button" class="restart-btn" @click="handleRestart">
+            다시 하기
+          </button>
+        </div>
+      </div>
+
+      <div v-else-if="isFinished" class="winner-banner">
+        <p class="winner-text">🏆 {{ publicState?.winnerName }} 승리!</p>
+        <button type="button" class="restart-btn" @click="handleRestart">
+          다시 하기
+        </button>
+      </div>
+
+      <template v-for="corner in CORNERS_CLOCKWISE" :key="corner">
+        <BoardCornerZone
+          v-if="playerAtCorner(corner)"
+          :corner="corner"
+          :player-name="playerAtCorner(corner)!.name"
+          :hand-count="playerAtCorner(corner)!.handCount"
+          :is-turn="currentTurnId === playerAtCorner(corner)!.id"
+          :preview-index="previewForCorner(corner)"
+          :show-draw="isPlaying"
+          @draw="handleDraw(playerAtCorner(corner)!.id)"
+        />
+      </template>
+
+      <div class="center-pile">
+        <DeckView large :count="deckCount" />
+        <DiscardPileView
+          :top-card="publicState?.topCard ?? null"
+          :active-color="publicState?.activeColor"
+          large
+        />
+      </div>
+    </section>
+
+    <p v-if="store.statusMessage" class="toast">{{ store.statusMessage }}</p>
+    <UndoTurnButton
+      v-if="store.gameStarted && (isPlaying || isRoundWon)"
+      :disabled="undoDisabled"
+      @undo="undo()"
+    />
+  </main>
+</template>
+
+<style scoped>
+.board {
+  min-height: 100vh;
+  min-height: 100dvh;
+  display: flex;
+  flex-direction: column;
+  background: radial-gradient(ellipse at center, #1e2a4a 0%, #1a1a2e 70%);
+  overflow: hidden;
+}
+
+.pre-game {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  -webkit-overflow-scrolling: touch;
+  overscroll-behavior: contain;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 16px;
+  padding: 56px 16px 24px;
+}
+
+.device-count {
+  color: #888;
+  font-size: 0.9rem;
+}
+
+.start-btn {
+  padding: 16px 32px;
+  border-radius: 12px;
+  border: none;
+  background: #6c5ce7;
+  color: #fff;
+  font-size: 1.1rem;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.start-btn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.game-table {
+  flex: 1;
+  display: grid;
+  grid-template-areas:
+    ". top ."
+    "left center right"
+    ". bottom .";
+  grid-template-columns: minmax(72px, 1fr) auto minmax(72px, 1fr);
+  grid-template-rows: auto 1fr auto;
+  align-items: center;
+  justify-items: center;
+  padding: 48px 8px 16px;
+  min-height: 100vh;
+  min-height: 100dvh;
+  gap: 4px;
+}
+
+.center-pile {
+  grid-area: center;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: clamp(24px, 6vw, 64px);
+  padding: 8px 0;
+}
+
+.winner-banner {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 16px;
+  padding: 20px 32px;
+  background: rgba(26, 26, 46, 0.92);
+  border-radius: 16px;
+  border: 2px solid #f1c40f;
+  z-index: 200;
+}
+
+.winner-text {
+  font-size: 1.6rem;
+  font-weight: 700;
+  color: #f1c40f;
+  margin: 0;
+}
+
+.winner-sub {
+  margin: 0;
+  font-size: 0.95rem;
+  color: #aaa;
+  text-align: center;
+}
+
+.winner-actions {
+  display: flex;
+  gap: 12px;
+  flex-wrap: wrap;
+  justify-content: center;
+}
+
+.continue-btn {
+  padding: 12px 28px;
+  border-radius: 12px;
+  border: none;
+  background: #27ae60;
+  color: #fff;
+  font-size: 1rem;
+  font-weight: 700;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.continue-btn:active {
+  transform: scale(0.97);
+}
+
+.restart-btn {
+  padding: 12px 28px;
+  border-radius: 12px;
+  border: none;
+  background: #6c5ce7;
+  color: #fff;
+  font-size: 1rem;
+  font-weight: 700;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+}
+
+.restart-btn:active {
+  transform: scale(0.97);
+}
+
+.top-actions {
+  position: fixed;
+  top: 12px;
+  right: 12px;
+  z-index: 300;
+}
+
+.toast {
+  position: fixed;
+  bottom: 80px;
+  left: 50%;
+  transform: translateX(-50%);
+  background: #2a2a4a;
+  border: 2px solid #6c5ce7;
+  padding: 12px 20px;
+  border-radius: 10px;
+  font-size: 0.9rem;
+  z-index: 200;
+  white-space: nowrap;
+}
+</style>
@@ -0,0 +1,487 @@
+<script setup lang="ts">
+import { ref, computed, watch, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useRoomStore } from '@/stores/roomStore'
+import { usePeerRoom } from '@/composables/usePeerRoom'
+import {
+  generateRoomCode,
+  generatePlayerId,
+  saveSession,
+  clearSession,
+  loadSavedPlayerName,
+  savePlayerName,
+} from '@/utils/session'
+import HomeButton from '@/components/HomeButton.vue'
+import RoomCodeDisplay from '@/components/RoomCodeDisplay.vue'
+import { MAX_PLAYERS } from '@/utils/boardLayout'
+import type { RoomRole } from '@/games/onecard/types'
+
+const router = useRouter()
+const store = useRoomStore()
+const { hostRoom, joinRoom, destroy } = usePeerRoom()
+
+const mode = ref<'menu' | 'join' | 'waiting'>('menu')
+const inputCode = ref('')
+const selectedRole = ref<RoomRole>('player')
+const playerName = ref('')
+
+onMounted(() => {
+  playerName.value = loadSavedPlayerName()
+})
+
+watch(playerName, (name) => {
+  savePlayerName(name)
+})
+const isConnecting = ref(false)
+const localRoomCode = ref('')
+
+const deviceCount = computed(() => 1 + store.playerCount)
+const canStart = computed(() => store.canStartGame && deviceCount.value >= 3)
+
+async function startCreateRoom() {
+  const code = generateRoomCode()
+  const pid = generatePlayerId()
+  const role: RoomRole = 'board'
+
+  store.reset()
+  store.roomCode = code
+  store.role = role
+  store.playerId = pid
+  store.playerName = '보드판'
+  localRoomCode.value = code
+  mode.value = 'waiting'
+
+  saveSession({ roomCode: code, role, playerId: pid, playerName: store.playerName })
+  isConnecting.value = true
+
+  try {
+    await hostRoom(code)
+  } catch {
+    store.connectionError = '방 생성에 실패했습니다. 다시 시도해주세요.'
+    localRoomCode.value = ''
+    mode.value = 'menu'
+  } finally {
+    isConnecting.value = false
+  }
+}
+
+async function joinExistingRoom() {
+  const code = inputCode.value.trim().toUpperCase()
+  if (code.length !== 6) {
+    store.connectionError = '6자리 방 코드를 입력해주세요.'
+    return
+  }
+
+  const pid = generatePlayerId()
+  const role = selectedRole.value
+
+  if (role === 'board') {
+    store.connectionError = '보드판은 방 만들기를 사용해주세요.'
+    return
+  }
+
+  store.reset()
+  store.roomCode = code
+  store.role = role
+  store.playerId = pid
+  store.playerName = playerName.value.trim() || `플레이어 ${pid.slice(0, 4)}`
+  savePlayerName(store.playerName)
+
+  saveSession({ roomCode: code, role, playerId: pid, playerName: store.playerName })
+  isConnecting.value = true
+
+  try {
+    await joinRoom(code, pid, store.playerName)
+    navigateToGame()
+  } catch {
+    store.connectionError = store.connectionError || '방 접속에 실패했습니다. 보드판이 방을 연 상태인지 확인해주세요.'
+  } finally {
+    isConnecting.value = false
+  }
+}
+
+function navigateToGame() {
+  if (store.role === 'board') {
+    router.push('/onecard/board')
+  } else {
+    router.push('/onecard/player')
+  }
+}
+
+function goToBoard() {
+  router.push('/onecard/board')
+}
+
+function leaveSubScreen() {
+  if (mode.value === 'waiting') {
+    destroy()
+    clearSession()
+    localRoomCode.value = ''
+  }
+  store.connectionError = ''
+  mode.value = 'menu'
+}
+</script>
+
+<template>
+  <main class="lobby">
+    <div class="top-actions">
+      <HomeButton v-if="mode === 'menu'" />
+    </div>
+
+    <header class="lobby-header" :class="{ 'has-top-action': mode === 'menu' }">
+      <button v-if="mode !== 'menu'" class="back" @click="leaveSubScreen">← 뒤로</button>
+      <h1 class="title">원카드</h1>
+    </header>
+
+    <div class="lobby-body">
+      <!-- 메인 메뉴 -->
+      <div v-if="mode === 'menu'" class="menu">
+        <button class="btn primary" @click="startCreateRoom">방 만들기</button>
+        <button class="btn" @click="mode = 'join'">방 참가하기</button>
+      </div>
+
+      <!-- 방 참가 -->
+      <div v-else-if="mode === 'join'" class="form">
+        <label class="field">
+          <span>방 코드</span>
+          <input
+            v-model="inputCode"
+            placeholder="6자리 코드"
+            maxlength="6"
+            class="code-input"
+            @input="inputCode = inputCode.toUpperCase()"
+          />
+        </label>
+
+        <label class="field">
+          <span>닉네임</span>
+          <input v-model="playerName" placeholder="플레이어" maxlength="12" />
+        </label>
+
+        <fieldset class="role-select">
+          <legend>역할 선택</legend>
+          <label>
+            <input v-model="selectedRole" type="radio" value="player" />
+            플레이어
+          </label>
+        </fieldset>
+
+        <button class="btn primary" :disabled="isConnecting" @click="joinExistingRoom">
+          {{ isConnecting ? '연결 중...' : '접속하기' }}
+        </button>
+      </div>
+
+      <!-- 대기 화면 (보드판) -->
+      <div v-else-if="mode === 'waiting'" class="waiting">
+        <RoomCodeDisplay :code="localRoomCode" />
+        <p v-if="isConnecting" class="connecting">연결 중...</p>
+        <p class="wait-info">
+          접속: <strong>{{ deviceCount }}/{{ 1 + MAX_PLAYERS }}</strong>대
+          · 플레이어 <strong>{{ store.playerCount }}/{{ MAX_PLAYERS }}</strong>명
+        </p>
+        <p class="wait-hint">플레이어 2~{{ MAX_PLAYERS }}명 접속 후 보드판에서 자리를 배치하고 게임을 시작하세요.</p>
+
+        <ul v-if="store.players.length > 0" class="connected-list">
+          <li v-for="p in store.players" :key="p.id">{{ p.name }}</li>
+        </ul>
+        <p v-else class="no-players">플레이어 대기 중...</p>
+
+        <button
+          class="btn primary"
+          :disabled="!canStart"
+          @click="goToBoard"
+        >
+          {{ canStart ? '보드판으로 이동' : `대기 중 (${deviceCount}/3)` }}
+        </button>
+      </div>
+
+      <p v-if="store.connectionError" class="error">{{ store.connectionError }}</p>
+    </div>
+  </main>
+</template>
+
+<style scoped>
+.lobby {
+  height: 100vh;
+  height: 100dvh;
+  max-width: 420px;
+  margin: 0 auto;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.lobby-header {
+  flex-shrink: 0;
+  padding: 24px 24px 0;
+  padding-top: calc(24px + env(safe-area-inset-top, 0px));
+}
+
+.lobby-header.has-top-action {
+  padding-right: 96px;
+}
+
+.top-actions {
+  position: fixed;
+  top: calc(12px + env(safe-area-inset-top, 0px));
+  right: calc(12px + env(safe-area-inset-right, 0px));
+  z-index: 300;
+}
+
+.lobby-body {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  overflow-x: hidden;
+  -webkit-overflow-scrolling: touch;
+  overscroll-behavior: contain;
+  padding: 16px 24px 32px;
+  padding-bottom: calc(32px + env(safe-area-inset-bottom, 0px));
+}
+
+.back {
+  background: none;
+  border: none;
+  color: #888;
+  cursor: pointer;
+  font-size: 0.9rem;
+  margin-bottom: 12px;
+  padding: 4px 0;
+}
+
+.title {
+  font-size: 1.8rem;
+  font-weight: 700;
+  margin-bottom: 0;
+}
+
+.menu {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+  gap: 20px;
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.field span {
+  font-size: 0.85rem;
+  color: #888;
+}
+
+.field input {
+  padding: 12px 14px;
+  border-radius: 8px;
+  border: 2px solid #333;
+  background: #2a2a4a;
+  color: #eee;
+  font-size: 1rem;
+}
+
+.code-input {
+  font-size: 1.4rem !important;
+  letter-spacing: 0.15em;
+  text-transform: uppercase;
+  text-align: center;
+}
+
+.role-select {
+  border: 2px solid #333;
+  border-radius: 8px;
+  padding: 14px;
+  display: flex;
+  gap: 20px;
+}
+
+.role-select legend {
+  font-size: 0.85rem;
+  color: #888;
+  padding: 0 6px;
+}
+
+.role-select label {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+}
+
+.btn {
+  padding: 14px;
+  border-radius: 10px;
+  border: 2px solid #444;
+  background: #2a2a4a;
+  color: #eee;
+  font-size: 1rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background 0.15s;
+}
+
+.btn.primary {
+  background: #6c5ce7;
+  border-color: #6c5ce7;
+}
+
+.btn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.waiting {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 20px;
+  text-align: center;
+}
+
+.wait-info {
+  font-size: 1.1rem;
+}
+
+.connecting {
+  font-size: 0.9rem;
+  color: #888;
+}
+
+.wait-hint {
+  font-size: 0.85rem;
+  color: #888;
+}
+
+.connected-list {
+  list-style: none;
+  width: 100%;
+}
+
+.connected-list li {
+  padding: 10px;
+  background: #2a2a4a;
+  border-radius: 8px;
+  margin-bottom: 6px;
+}
+
+.no-players {
+  color: #666;
+  font-size: 0.9rem;
+}
+
+.error {
+  margin-top: 20px;
+  color: #e74c3c;
+  font-size: 0.9rem;
+  text-align: center;
+}
+
+@media (orientation: landscape) and (max-height: 520px) {
+  .lobby-header {
+    padding: 10px 20px 0;
+    padding-top: calc(10px + env(safe-area-inset-top, 0px));
+  }
+
+  .lobby-header.has-top-action {
+    padding-right: 88px;
+  }
+
+  .lobby-body {
+    padding: 8px 20px 16px;
+    padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
+  }
+
+  .title {
+    font-size: 1.25rem;
+  }
+
+  .back {
+    margin-bottom: 4px;
+    font-size: 0.8rem;
+  }
+
+  .menu {
+    gap: 10px;
+  }
+
+  .form {
+    gap: 10px;
+  }
+
+  .field {
+    gap: 4px;
+  }
+
+  .field span {
+    font-size: 0.8rem;
+  }
+
+  .field input {
+    padding: 8px 12px;
+    font-size: 0.9rem;
+  }
+
+  .code-input {
+    font-size: 1.1rem !important;
+  }
+
+  .role-select {
+    padding: 8px 12px;
+    gap: 12px;
+  }
+
+  .role-select legend {
+    font-size: 0.8rem;
+  }
+
+  .btn {
+    padding: 10px;
+    font-size: 0.9rem;
+  }
+
+  .waiting {
+    gap: 10px;
+  }
+
+  .wait-info {
+    font-size: 0.95rem;
+  }
+
+  .wait-hint,
+  .connecting,
+  .no-players {
+    font-size: 0.8rem;
+  }
+
+  .connected-list li {
+    padding: 8px;
+    font-size: 0.9rem;
+  }
+
+  .error {
+    margin-top: 12px;
+    font-size: 0.85rem;
+  }
+
+  .waiting :deep(.code-text) {
+    font-size: 1.5rem;
+  }
+
+  .waiting :deep(.room-code) {
+    gap: 8px;
+  }
+
+  .waiting :deep(.copy-btn) {
+    padding: 6px 12px;
+    font-size: 0.8rem;
+  }
+}
+</style>
@@ -0,0 +1,327 @@
+<script setup lang="ts">
+import { ref, computed, onMounted, onUnmounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useRoomStore } from '@/stores/roomStore'
+import { usePeerRoom } from '@/composables/usePeerRoom'
+import { loadSession } from '@/utils/session'
+import type { CardColor } from '@/games/onecard/types'
+import HandView from '@/components/HandView.vue'
+import WildColorPicker from '@/components/WildColorPicker.vue'
+import RoomCodeDisplay from '@/components/RoomCodeDisplay.vue'
+import ExitButton from '@/components/ExitButton.vue'
+
+const router = useRouter()
+const store = useRoomStore()
+const { joinRoom, sendPlayCard, sendDeclareOneCard, sendHandPreview } = usePeerRoom()
+
+const isReady = ref(false)
+const handRef = ref<InstanceType<typeof HandView> | null>(null)
+const pendingWildCardId = ref<string | null>(null)
+const showColorPicker = ref(false)
+
+const isMyTurn = computed(() => store.currentTurnPlayerId === store.playerId)
+const publicState = computed(() => store.publicState)
+const drawPenalty = computed(() => publicState.value?.drawPenalty ?? 0)
+const isPlaying = computed(() => publicState.value?.phase === 'playing')
+const isRoundWon = computed(() => publicState.value?.phase === 'round_won')
+const isFinished = computed(() => publicState.value?.phase === 'finished')
+
+const turnLabel = computed(() => {
+  if (isRoundWon.value) {
+    if (publicState.value?.winnerId === store.playerId) return '패 완료!'
+    return `${publicState.value?.winnerName ?? '누군가'} 패 완료`
+  }
+  if (isFinished.value) {
+    if (publicState.value?.winnerId === store.playerId) return '승리!'
+    return `${publicState.value?.winnerName ?? '누군가'} 승리`
+  }
+  if (!store.gameStarted) return '대기 중'
+  if (isMyTurn.value) return '내 턴'
+  return '상대 턴'
+})
+
+const isEliminated = computed(() => {
+  if (!publicState.value || !store.gameStarted) return false
+  return !publicState.value.turnOrder.includes(store.playerId)
+})
+
+onMounted(async () => {
+  const session = loadSession()
+  if (!session || session.role !== 'player') {
+    router.replace('/onecard/lobby')
+    return
+  }
+
+  store.roomCode = session.roomCode
+  store.role = session.role
+  store.playerId = session.playerId
+  store.playerName = session.playerName || '플레이어'
+
+  if (!store.isConnected) {
+    try {
+      await joinRoom(session.roomCode, session.playerId, store.playerName)
+    } catch {
+      router.replace('/onecard/lobby')
+      return
+    }
+  }
+  isReady.value = true
+})
+
+onUnmounted(() => {
+  sendHandPreview(null)
+})
+
+function handleSelectionChange(cardId: string | null) {
+  sendHandPreview(cardId)
+}
+
+function handlePlay(cardId: string) {
+  sendPlayCard(cardId)
+  handRef.value?.clearSelection()
+}
+
+function handleRequestColor(cardId: string) {
+  pendingWildCardId.value = cardId
+  showColorPicker.value = true
+}
+
+function handleColorSelect(color: CardColor) {
+  if (pendingWildCardId.value) {
+    sendPlayCard(pendingWildCardId.value, color)
+    handRef.value?.clearSelection()
+  }
+  pendingWildCardId.value = null
+  showColorPicker.value = false
+}
+
+function handleColorCancel() {
+  pendingWildCardId.value = null
+  showColorPicker.value = false
+  handRef.value?.clearSelection()
+}
+</script>
+
+<template>
+  <main v-if="isReady" class="player">
+    <RoomCodeDisplay :code="store.roomCode" compact />
+
+    <div class="top-actions">
+      <ExitButton />
+    </div>
+
+    <div class="turn-bar">
+      <div class="turn-indicator" :class="{ active: isMyTurn && isPlaying }">
+        {{ turnLabel }}
+      </div>
+    </div>
+
+    <section v-if="isRoundWon" class="round-won">
+      <p v-if="publicState?.winnerId === store.playerId">
+        🎉 패를 모두 냈습니다!
+      </p>
+      <p v-else>
+        🎉 {{ publicState?.winnerName }}님이 패를 모두 냈습니다
+      </p>
+      <p class="round-won-hint">보드판에서 이어하기 / 다시 하기를 선택해주세요</p>
+    </section>
+
+    <section v-else-if="store.gameStarted && isPlaying && !isEliminated" class="hand-area">
+      <button
+        v-if="store.myHand.length === 1"
+        type="button"
+        class="onecard-btn"
+        @click="sendDeclareOneCard"
+      >
+        원카드!
+      </button>
+      <HandView
+        ref="handRef"
+        :cards="store.myHand"
+        :top-card="publicState?.topCard ?? null"
+        :active-color="publicState?.activeColor"
+        :draw-penalty="drawPenalty"
+        :can-interact="isMyTurn"
+        @play="handlePlay"
+        @request-color="handleRequestColor"
+        @selection-change="handleSelectionChange"
+      />
+    </section>
+
+    <section v-else-if="store.gameStarted && isPlaying && isEliminated" class="eliminated">
+      <p>패를 모두 냈습니다</p>
+      <p class="eliminated-hint">다른 플레이어 게임을 지켜보세요</p>
+    </section>
+
+    <section v-else-if="!store.gameStarted" class="waiting">
+      <p>게임 시작 대기 중...</p>
+    </section>
+
+    <section v-else class="winner">
+      <p>{{ publicState?.winnerId === store.playerId ? '🎉 승리!' : `🏆 ${publicState?.winnerName} 승리` }}</p>
+      <p class="winner-hint">보드판에서 다시 하기를 눌러주세요</p>
+    </section>
+
+    <p v-if="store.statusMessage" class="toast">{{ store.statusMessage }}</p>
+
+    <WildColorPicker
+      :visible="showColorPicker"
+      @select="handleColorSelect"
+      @cancel="handleColorCancel"
+    />
+  </main>
+</template>
+
+<style scoped>
+.player {
+  width: 100vw;
+  height: 100vh;
+  height: 100dvh;
+  position: relative;
+  background: #1a1a2e;
+  overflow: hidden;
+}
+
+.top-actions {
+  position: fixed;
+  top: 12px;
+  right: 12px;
+  z-index: 300;
+}
+
+.turn-bar {
+  position: fixed;
+  top: 10px;
+  left: 50%;
+  transform: translateX(-50%);
+  z-index: 10;
+}
+
+.turn-indicator {
+  padding: 5px 16px;
+  border-radius: 14px;
+  background: rgba(42, 42, 74, 0.9);
+  font-weight: 600;
+  font-size: 0.85rem;
+  color: #666;
+}
+
+.turn-indicator.active {
+  background: #f1c40f;
+  color: #1a1a2e;
+}
+
+.hand-area {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: flex-end;
+  max-height: 50vh;
+  max-height: 50dvh;
+  padding-bottom: env(safe-area-inset-bottom, 0);
+  z-index: 5;
+}
+
+.winner {
+  position: fixed;
+  inset: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 12px;
+  color: #888;
+}
+
+.winner p {
+  margin: 0;
+}
+
+.winner > p:first-child {
+  font-size: 1.4rem;
+  font-weight: 700;
+  color: #f1c40f;
+}
+
+.winner-hint {
+  font-size: 0.9rem;
+  color: #666;
+}
+
+.round-won,
+.eliminated {
+  position: fixed;
+  inset: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  padding: 24px;
+  text-align: center;
+}
+
+.round-won p,
+.eliminated > p:first-child {
+  margin: 0;
+  font-size: 1.3rem;
+  font-weight: 700;
+  color: #f1c40f;
+}
+
+.round-won-hint,
+.eliminated-hint {
+  margin: 0;
+  font-size: 0.9rem;
+  color: #666;
+  font-weight: 400;
+}
+
+.waiting {
+  position: fixed;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #888;
+}
+
+.onecard-btn {
+  position: fixed;
+  bottom: calc(min(50vh, 50dvh) + 8px);
+  right: 12px;
+  padding: 8px 16px;
+  border-radius: 16px;
+  border: none;
+  background: #e74c3c;
+  color: #fff;
+  font-weight: 700;
+  font-size: 0.85rem;
+  cursor: pointer;
+  z-index: 20;
+  animation: blink 1s ease infinite;
+}
+
+@keyframes blink {
+  0%, 100% { opacity: 1; }
+  50% { opacity: 0.75; }
+}
+
+.toast {
+  position: fixed;
+  bottom: calc(min(50vh, 50dvh) + min(24vh, 24dvh) + 12px);
+  left: 50%;
+  transform: translateX(-50%);
+  background: #2a2a4a;
+  border: 2px solid #e74c3c;
+  padding: 10px 18px;
+  border-radius: 10px;
+  font-size: 0.85rem;
+  z-index: 300;
+  white-space: nowrap;
+}
+</style>
@@ -0,0 +1,18 @@
+{
+  "extends": "@vue/tsconfig/tsconfig.dom.json",
+  "include": ["env.d.ts", "src/**/*", "src/**/*.vue"],
+  "exclude": ["src/**/__tests__/*"],
+  "compilerOptions": {
+    // Extra safety for array and object lookups, but may have false positives.
+    "noUncheckedIndexedAccess": true,
+
+    // Path mapping for cleaner imports.
+    "paths": {
+      "@/*": ["./src/*"]
+    },
+
+    // `vue-tsc --build` produces a .tsbuildinfo file for incremental type-checking.
+    // Specified here to keep it out of the root directory.
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo"
+  }
+}
@@ -0,0 +1,11 @@
+{
+  "files": [],
+  "references": [
+    {
+      "path": "./tsconfig.node.json"
+    },
+    {
+      "path": "./tsconfig.app.json"
+    }
+  ]
+}
@@ -0,0 +1,27 @@
+// TSConfig for modules that run in Node.js environment via either transpilation or type-stripping.
+{
+  "extends": "@tsconfig/node24/tsconfig.json",
+  "include": [
+    "vite.config.*",
+    "vitest.config.*",
+    "cypress.config.*",
+    "playwright.config.*",
+    "eslint.config.*"
+  ],
+  "compilerOptions": {
+    // Most tools use transpilation instead of Node.js's native type-stripping.
+    // Bundler mode provides a smoother developer experience.
+    "module": "preserve",
+    "moduleResolution": "bundler",
+
+    // Include Node.js types and avoid accidentally including other `@types/*` packages.
+    "types": ["node"],
+
+    // Disable emitting output during `vue-tsc --build`, which is used for type-checking only.
+    "noEmit": true,
+
+    // `vue-tsc --build` produces a .tsbuildinfo file for incremental type-checking.
+    // Specified here to keep it out of the root directory.
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo"
+  }
+}
@@ -0,0 +1,18 @@
+import { fileURLToPath, URL } from 'node:url'
+
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import vueDevTools from 'vite-plugin-vue-devtools'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    vue(),
+    vueDevTools(),
+  ],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
+    },
+  },
+})