fix: improve alert overlay z-index and prevent text wrapping

- Increase z-index from 9999 to 99999 to ensure alert popup appears above all modules
- Add explicit positioning styles (position, top, left, width, height) to overlay
- Prevent alert text wrapping by adding white-space: nowrap and font-size: 20px
- Fixes click-through issue where underlying modules (e.g., calendar) were interactive behind alert

Based on user feedback in #31

Author: KristjanESPERANTO

MMM-OneCallWeather.css

@@ -80,6 +80,8 @@
     text-align: center;
     font-weight: bold;
     color: #ff8c8c;
+    font-size: 20px;
+    white-space: nowrap;
     padding: 0.5em;
     line-height: 1.4;
   }
@@ -279,7 +281,7 @@
   width: 100vw;
   height: 100vh;
   background: rgba(0, 0, 0, 0.7);
-  z-index: 9999;
+  z-index: 99999;
   display: flex;
   align-items: center;
   justify-content: center;

MMM-OneCallWeather.js

@@ -860,8 +860,13 @@ Module.register('MMM-OneCallWeather', {
       }
     }
     // Make sure it blocks all clicks to underlying modules
+    overlay.style.position = 'fixed'
+    overlay.style.top = '0'
+    overlay.style.left = '0'
+    overlay.style.width = '100vw'
+    overlay.style.height = '100vh'
+    overlay.style.zIndex = '99999'        // on top of everything
     overlay.style.pointerEvents = 'auto'  // ensure overlay captures all clicks
-    overlay.style.zIndex = '9999'         // on top of everything
     // Stop clicks inside overlay from propagating
     overlay.addEventListener('click', (e) => {
       if (e.target === overlay) {