style: restore danger styling for stop sniffing button

src/components/tools/ClipboardSniffer.vue

@@ -69,7 +69,7 @@ const clearText = () => {
         </button>
         <button
           v-else
-          class="btn-neon active"
+          class="btn-neon danger"
           @click="stopListening"
           v-ripple
         >

src/style.css

@@ -289,6 +289,22 @@ button:focus {
   box-shadow: var(--button-active-shadow);
 }
 
+.btn-neon.danger {
+  background: rgba(239, 68, 68, 0.2);
+  border-color: rgba(239, 68, 68, 0.6);
+  color: #fee2e2;
+}
+
+.btn-neon.danger:hover {
+  background: rgba(239, 68, 68, 0.3);
+  border-color: rgba(239, 68, 68, 0.85);
+  box-shadow: 0 8px 20px rgba(239, 68, 68, 0.2);
+}
+
+:root[data-theme="light"] .btn-neon.danger {
+  color: #7f1d1d;
+}
+
 .icon-only {
   padding: 8px;
   border-radius: 50%;