diff --git a/index.html b/index.html
index 25e027a..767d617 100644
--- a/index.html
+++ b/index.html
@@ -75,7 +75,8 @@ body {
   width: 36px; height: 36px; border: none; background: none;
   cursor: pointer; border-radius: var(--radius-sm);
   display: flex; align-items: center; justify-content: center;
-  font-size: 16px; color: var(--text-secondary); flex-shrink: 0;
+  font-size: 16px; color: var(--text-secondary);
+  flex-shrink: 0; margin-left: 4px;
 }
 .header-bar .theme-btn:hover { background: var(--bg-elevated); }
 .header-bar .brand { display: flex; align-items: baseline; gap: 8px; flex-shrink: 0; }
@@ -85,7 +86,7 @@ body {
   -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
 }
 .header-bar .tagline { font-size: 11px; color: var(--text-tertiary); display: inline; }
-.search-box { flex: 1 1 auto; min-width: 80px; max-width: 500px; position: relative; }
+.header-bar .search-box { flex: 0 1 300px; min-width: 100px; position: relative; }
 .search-box input {
   width: 100%; padding: 8px 12px 8px 34px;
   border: 1px solid var(--border); border-radius: var(--radius-sm);