파일 기능 버튼의 디자인을 btn-warning으로 변경

src/renderer/index.html

@@ -13,7 +13,7 @@
 </div>
 
 <div id="toolbar">
-  <button class="btn btn-primary" id="btn-open"><span>📁</span>폴더 열기 (O)</button>
+  <button class="btn btn-warning" id="btn-open"><span>📁</span>폴더 열기 (O)</button>
   <div class="separator"></div>
   <div class="sort-group">
     <button class="sort-btn" id="btn-sort-name">이름순</button>
@@ -23,7 +23,7 @@
   <button class="btn btn-success" id="btn-rename" disabled><span>✅</span>이름 변경 실행 (S)</button>
   <div style="margin-left:auto; display:flex; align-items:center; gap:8px;">
     <span class="dir-path" id="dir-path">폴더를 선택하세요</span>
-    <button class="btn btn-ghost" id="btn-reveal" disabled>Finder에서 열기</button>
+    <button class="btn btn-warning" id="btn-reveal" disabled>Finder에서 열기</button>
   </div>
 </div>
 

src/renderer/style.css

@@ -8,6 +8,7 @@
   --accent:     #7c6af7;
   --accent2:    #e96af7;
   --success:    #6af7a0;
+  --warning:    #f7c26a;
   --text:       #e8e8f0;
   --muted:      #6b6b8a;
   --drag-over:  #3a2e70;
@@ -102,6 +103,9 @@ body.fullscreen #titlebar {
 .btn-success { background: #1a4a2e; color: var(--success); border: 1px solid #2a6a40; }
 .btn-success:hover { background: #204a34; }
 .btn-success:disabled { opacity: .4; cursor: not-allowed; transform: none; }
+.btn-warning { background: #3a2a10; color: var(--warning); border: 1px solid #5a4020; }
+.btn-warning:hover { background: #4a3518; }
+.btn-warning:disabled { opacity: .4; cursor: not-allowed; }
 .separator { width: 1px; height: 24px; background: var(--border); margin: 0 4px; }
 
 /* ── 포맷 바 ── */