fix: resolve CSP and accessibility issues (#60)

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Co-authored-by: Hikari <hikari@nhcarrigan.com>
Reviewed-on: #60

apps/frontend/src/styles.scss

@@ -143,23 +143,36 @@ button {
   background: var(--witch-plum);
 }
 
-// Skip to main content link
+// Skip to main content link - visually hidden but accessible to screen readers
 .skip-link {
   position: absolute;
-  top: -40px;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  white-space: nowrap;
+  border: 0;
+}
+
+.skip-link:focus {
+  position: fixed;
+  top: 0;
   left: 0;
+  width: auto;
+  height: auto;
+  padding: 0.75rem 1.5rem;
+  margin: 0;
+  overflow: visible;
+  clip: auto;
+  white-space: normal;
   background: var(--witch-rose);
   color: var(--witch-moon);
-  padding: 0.75rem 1.5rem;
   text-decoration: none;
   font-weight: 600;
   border-radius: 0 0 4px 0;
   z-index: 10000;
-  transition: top 0.3s;
-}
-
-.skip-link:focus {
-  top: 0;
 }
 
 // Enhanced focus styles for keyboard navigation