diff --git a/CLAUDE.md b/CLAUDE.md
index e587871..bf70cb5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -40,7 +40,7 @@ src/
         ├── drag-drop.js  # Card drag-and-drop reorder (single and multi-card)
         ├── selection.js  # Rubber-band selection, Shift-click, Cmd+click
         ├── pinch-zoom.js # Trackpad pinch to resize thumbnails (CSS --thumb-size, 150–400px)
-        └── hover-preview.js # Hover preview overlay
+        └── image-preview.js # Hover preview overlay
 ```
 
 ### IPC surface
diff --git a/src/renderer/handlers/hover-preview.js b/src/renderer/handlers/image-preview.js
similarity index 50%
rename from src/renderer/handlers/hover-preview.js
rename to src/renderer/handlers/image-preview.js
index 5030af2..9c8ba67 100644
--- a/src/renderer/handlers/hover-preview.js
+++ b/src/renderer/handlers/image-preview.js
@@ -1,14 +1,17 @@
-const DELAY = 1000;
+const SHOW_DELAY = 1000;
+const HIDE_DELAY = 100;
 
 const SVG_NS = 'http://www.w3.org/2000/svg';
 const RADIUS = 20;
 const CIRC   = 2 * Math.PI * RADIUS; // ~125.66
 
-let _el        = null;
-let _imgEl     = null;
-let _timer     = null;
-let _visible   = false;
-let _loaderEl  = null;
+let _el         = null;
+let _imgEl      = null;
+let _showTimer  = null;
+let _hideTimer  = null;
+let _visible    = false;
+let _loaderEl   = null;
+let _activeCard = null;
 
 export function init() {
   _el = document.createElement('div');
@@ -26,35 +29,75 @@ export function setupCard(card) {
 
 function _onEnter() {
   const card = this;
-  clearTimeout(_timer);
+  _activeCard = card;
+
+  // 팝업이 사라지려고 대기 중이면 취소
+  if (_hideTimer) {
+    clearTimeout(_hideTimer);
+    _hideTimer = null;
+  }
+
+  if (_visible) {
+    // 이미 팝업이 열려 있으면 즉시 내용 전환
+    _switchTo(card);
+    return;
+  }
+
+  // 팝업이 닫힌 상태 — 1초 대기 후 표시
+  clearTimeout(_showTimer);
   _showLoader(card);
-
-  _timer = setTimeout(async () => {
+  _showTimer = setTimeout(async () => {
+    _showTimer = null;
     _removeLoader();
-    const thumb = card.querySelector('img.card-thumb');
-    if (!thumb) return;
+    if (_activeCard !== card) return;
 
-    // 아직 lazy-load가 안 된 경우 직접 로딩
-    let src = thumb.src;
-    if (!src) {
-      src = await window.api.readImage(card.dataset.filepath) || '';
-      if (src) thumb.src = src; // 카드에도 캐싱
-    }
-    if (!src) return;
+    const src = await _loadSrc(card);
+    if (!src || _activeCard !== card) return;
 
     _imgEl.src = src;
     _visible = true;
     _show(card);
-  }, DELAY);
+  }, SHOW_DELAY);
 }
 
 function _onLeave() {
-  clearTimeout(_timer);
-  _timer   = null;
-  _visible = false;
-  _removeLoader();
-  _el.style.display    = 'none';
-  _el.style.visibility = 'hidden';
+  if (!_visible) {
+    // 팝업 미표시 상태 — 로더·타이머만 정리
+    clearTimeout(_showTimer);
+    _showTimer = null;
+    _removeLoader();
+    return;
+  }
+
+  // 팝업 표시 중 — 0.1초 후 닫기 (다른 카드 진입 시 취소됨)
+  _hideTimer = setTimeout(() => {
+    _hideTimer = null;
+    _visible = false;
+    _el.style.display    = 'none';
+    _el.style.visibility = 'hidden';
+  }, HIDE_DELAY);
+}
+
+// ── 팝업 내용 전환 (이미 열린 상태에서 카드 변경) ──
+
+async function _switchTo(card) {
+  const src = await _loadSrc(card);
+  if (!src || _activeCard !== card) return;
+
+  _imgEl.src = src;
+  _show(card);
+}
+
+// ── 이미지 소스 반환 (카드 썸네일 캐시 우선) ──
+
+async function _loadSrc(card) {
+  const thumb = card.querySelector('img.card-thumb');
+  let src = thumb?.src || '';
+  if (!src) {
+    src = await window.api.readImage(card.dataset.filepath) || '';
+    if (src && thumb) thumb.src = src;
+  }
+  return src;
 }
 
 // ── 원형 로딩바 ──────────────────────────────────
@@ -66,26 +109,17 @@ function _showLoader(card) {
   svg.classList.add('card-hover-loader');
   svg.setAttribute('viewBox', '0 0 48 48');
 
-  // 배경 원
   const bg = document.createElementNS(SVG_NS, 'circle');
   bg.classList.add('loader-bg');
-  bg.setAttribute('cx', '24');
-  bg.setAttribute('cy', '24');
-  bg.setAttribute('r', '24');
+  bg.setAttribute('cx', '24'); bg.setAttribute('cy', '24'); bg.setAttribute('r', '24');
 
-  // 트랙 링
   const track = document.createElementNS(SVG_NS, 'circle');
   track.classList.add('loader-track');
-  track.setAttribute('cx', '24');
-  track.setAttribute('cy', '24');
-  track.setAttribute('r', String(RADIUS));
+  track.setAttribute('cx', '24'); track.setAttribute('cy', '24'); track.setAttribute('r', String(RADIUS));
 
-  // 진행 호
   const progress = document.createElementNS(SVG_NS, 'circle');
   progress.classList.add('loader-progress');
-  progress.setAttribute('cx', '24');
-  progress.setAttribute('cy', '24');
-  progress.setAttribute('r', String(RADIUS));
+  progress.setAttribute('cx', '24'); progress.setAttribute('cy', '24'); progress.setAttribute('r', String(RADIUS));
   progress.style.strokeDasharray  = CIRC;
   progress.style.strokeDashoffset = CIRC;
 
@@ -103,7 +137,7 @@ function _removeLoader() {
   }
 }
 
-// ── 이미지 팝업 ──────────────────────────────────
+// ── 이미지 팝업 위치 계산 및 표시 ────────────────
 
 function _show(card) {
   _el.style.display    = 'block';
@@ -116,8 +150,8 @@ function _show(card) {
 
     const popup    = _el.getBoundingClientRect();
     const cardRect = card.getBoundingClientRect();
-    const vw = window.innerWidth;
-    const vh = window.innerHeight;
+    const vw  = window.innerWidth;
+    const vh  = window.innerHeight;
     const gap = 16;
 
     let left = cardRect.right + gap;
diff --git a/src/renderer/renderer.js b/src/renderer/renderer.js
index 8545961..ce5f4af 100644
--- a/src/renderer/renderer.js
+++ b/src/renderer/renderer.js
@@ -2,7 +2,7 @@ import { state }        from './state.js';
 import * as pinchZoom   from './handlers/pinch-zoom.js';
 import * as selection    from './handlers/selection.js';
 import * as dragDrop     from './handlers/drag-drop.js';
-import * as hoverPreview from './handlers/hover-preview.js';
+import * as hoverPreview from './handlers/image-preview.js';
 
 let _cardObserver = null;