dynamic top-bar button colors for calendar tab

style/styles.css

@@ -66,11 +66,7 @@ html, body {
     text-decoration: underline;
 }
 
-/* ── Calendar-themed top bar ──────────────────────────── */
-#top-line.cal-theme {
-    background-color: rgba(35,35,41,0.85);
-    transition: background-color 0.4s ease;
-}
+/* ── Calendar-themed top bar buttons only ─────────────── */
 #top-line.cal-theme button {
     border-bottom-color: #FBC4CC;
     border-left-color: #FBC4CC;
@@ -78,9 +74,6 @@ html, body {
     color: #F4F2F5;
     transition: border-color 0.4s ease, color 0.4s ease;
 }
-#top-line.cal-theme #home-btn {
-    filter: brightness(0) invert(1); /* makes a dark logo white */;
-}
 
 title {
     font-size: large;