Refine admin content flow and improve Q&A mobile UX

src/App.css

@@ -3285,6 +3285,15 @@
   gap: 0.5rem;
 }
 
+.qa-topics::-webkit-scrollbar {
+  height: 6px;
+}
+
+.qa-topics::-webkit-scrollbar-thumb {
+  background: rgba(201, 168, 76, 0.4);
+  border-radius: 999px;
+}
+
 .qa-topic-btn {
   background: none;
   border: 1px solid rgba(201, 168, 76, 0.35);
@@ -3350,6 +3359,25 @@
   border-color: var(--brand-gold);
 }
 
+.qa-filter-actions {
+  display: flex;
+  justify-content: flex-end;
+}
+
+.qa-clear-btn {
+  background: transparent;
+  border: 1px solid rgba(201, 168, 76, 0.38);
+  color: #d7bd83;
+  border-radius: 999px;
+  padding: 0.35rem 0.8rem;
+  font-size: 0.82rem;
+  cursor: pointer;
+}
+
+.qa-clear-btn:hover {
+  background: rgba(201, 168, 76, 0.12);
+}
+
 .qa-cards {
   display: flex;
   flex-direction: column;
@@ -3481,6 +3509,80 @@
   text-align: center;
 }
 
+@media (max-width: 768px) {
+  .qa-filters {
+    gap: 0.65rem;
+    margin-bottom: 1.25rem;
+  }
+
+  .qa-topics {
+    flex-wrap: nowrap;
+    overflow-x: auto;
+    overflow-y: hidden;
+    padding-bottom: 0.2rem;
+    -webkit-overflow-scrolling: touch;
+  }
+
+  .qa-topic-btn {
+    flex: 0 0 auto;
+    white-space: nowrap;
+    font-size: 0.8rem;
+    padding: 0.32rem 0.72rem;
+  }
+
+  .qa-search input {
+    padding: 0.68rem 0.82rem;
+    font-size: 0.95rem;
+  }
+
+  .qa-card-face {
+    padding: 1rem 0.9rem;
+  }
+
+  .qa-card-front {
+    align-items: flex-start;
+    gap: 0.65rem;
+  }
+
+  .qa-face-label {
+    width: 1.2rem;
+    font-size: 1.1rem;
+    line-height: 1;
+  }
+
+  .qa-question-text {
+    font-size: 1rem;
+    line-height: 1.5;
+  }
+
+  .qa-answer-text {
+    font-size: 0.98rem;
+    line-height: 1.6;
+  }
+
+  .qa-pagination {
+    gap: 0.5rem;
+    margin-top: 1.25rem;
+  }
+
+  .qa-page-btn {
+    flex: 1;
+    min-height: 42px;
+    padding: 0.45rem 0.7rem;
+    font-size: 0.88rem;
+  }
+
+  .qa-page-info {
+    min-width: 3rem;
+    font-size: 0.82rem;
+  }
+
+  .qa-related-btn {
+    font-size: 0.78rem;
+    padding: 0.3rem 0.62rem;
+  }
+}
+
 @keyframes slideDown {
   from {
     opacity: 0;