Tighten header quick login layout

Shrink SNS circular buttons, move '간편로그인' label to the left, and hide the user/status badge until authenticated.

Co-authored-by: Cursor <cursoragent@cursor.com>

index.html

@@ -72,10 +72,10 @@
           </button>
           <div class="user" id="user" hidden>
             <span class="user-dot" aria-hidden="true"></span>
-            <span class="user-text" id="userText">로그인 필요</span>
+            <span class="user-text" id="userText"></span>
           </div>
           <div class="sns-login" id="snsLogin" hidden>
-            <span class="sns-label">SNS 간편로그인</span>
+            <span class="sns-label">간편로그인</span>
             <div class="sns-row">
               <button class="sns-btn sns-naver" id="btnNaver" type="button" hidden aria-label="네이버로 로그인">
                 <span class="sns-letter">N</span>

script.js

@@ -435,16 +435,18 @@
   }
 
   function updateAuthUi() {
-    // 항상 상태를 보여주고, 버튼은 상태에 따라 비활성/숨김 처리
+    // 로그인 전에는 사용자 배지를 숨김(요청: "로그인 설정 필요" 영역 제거)
+    if (!auth.user) {
+      el.user.hidden = true;
+    } else {
       el.user.hidden = false;
       const email = auth.user && auth.user.email ? String(auth.user.email) : "";
       const name = auth.user && auth.user.name ? String(auth.user.name) : "";
-    let label = email ? email : name ? name : auth.user ? "로그인됨" : "로그인 필요";
-    if (auth.mode === "misconfigured") label = "로그인 설정 필요";
-    if (auth.mode === "sdk_missing") label = "로그인 SDK 로드 실패";
+      const label = email ? email : name ? name : "로그인됨";
       el.userText.textContent = label;
       if (auth.authorized) el.user.setAttribute("data-auth", "ok");
       else el.user.removeAttribute("data-auth");
+    }
 
     // 로그인 기능이 활성(enabled)일 때만 로그인/로그아웃 버튼을 의미 있게 노출
     const enabled = auth.mode === "enabled";

styles.css

@@ -182,34 +182,34 @@ html[data-theme="light"] .topbar {
 
 .sns-login {
   display: inline-flex;
-  flex-direction: column;
+  flex-direction: row;
   align-items: center;
   gap: 10px;
-  padding: 10px 12px;
-  border-radius: 18px;
-  border: 1px solid var(--border);
-  background: rgba(255, 255, 255, 0.03);
+  padding: 0;
+  border-radius: 12px;
+  border: 0;
+  background: transparent;
 }
 
 .sns-row {
   display: inline-flex;
   align-items: center;
-  gap: 14px;
+  gap: 10px;
 }
 
 .sns-label {
-  font-size: 15px;
+  font-size: 13px;
   font-weight: 800;
   letter-spacing: -0.02em;
-  color: var(--text);
+  color: var(--muted2);
   white-space: nowrap;
 }
 
 .sns-btn {
-  width: 56px;
-  height: 56px;
+  width: 36px;
+  height: 36px;
   border-radius: 999px;
-  border: 2px solid rgba(0, 0, 0, 0.08);
+  border: 1px solid rgba(0, 0, 0, 0.10);
   display: grid;
   place-items: center;
   cursor: pointer;
@@ -244,7 +244,7 @@ html[data-theme="light"] .topbar {
 
 .sns-letter {
   font-weight: 900;
-  font-size: 24px;
+  font-size: 16px;
   color: #fff;
   letter-spacing: -0.02em;
 }
@@ -255,21 +255,21 @@ html[data-theme="light"] .topbar {
 }
 
 .sns-kakao-bubble {
-  width: 20px;
-  height: 16px;
+  width: 14px;
+  height: 11px;
   background: rgba(0, 0, 0, 0.82);
-  border-radius: 8px;
+  border-radius: 6px;
   position: relative;
 }
 
 .sns-kakao-bubble::after {
   content: "";
   position: absolute;
-  bottom: -5px;
-  left: 6px;
+  bottom: -4px;
+  left: 4px;
   width: 0;
   height: 0;
-  border: 5px solid transparent;
+  border: 4px solid transparent;
   border-top-color: rgba(0, 0, 0, 0.82);
 }
 
@@ -280,7 +280,7 @@ html[data-theme="light"] .topbar {
 
 .sns-google-g {
   font-weight: 900;
-  font-size: 24px;
+  font-size: 16px;
   background: conic-gradient(from 210deg, #ea4335 0 25%, #fbbc05 25% 50%, #34a853 50% 75%, #4285f4 75% 100%);
   -webkit-background-clip: text;
   background-clip: text;