Add Navigation Menu Component

src/app/components/popup/popup.scss

@@ -37,7 +37,7 @@ $default_animation_duration: 0.2s;
   animation: popup-enter var(--animation-duration) $animation_timing;
 
   outline: light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%)) 2px solid;
-  gap: 16px;
+  gap: 12px;
 
   &.variant-glass {
     background-color: light-dark(oklch(1 0 0 / 60%), oklch(0 0 0 / 60%));