chore(test): zero out safe-area insets in test environments

Author: ShaneK

core/scripts/testing/scripts.js

@@ -48,6 +48,24 @@
     document.head.appendChild(style);
   }
 
+  /**
+   * Zero out safe-area insets in test environments.
+   * The default 20px --ion-safe-area-top from core.scss is for legacy
+   * status bar simulation but doesn't represent real browser behavior.
+   * Tests that need to verify safe-area handling should explicitly set
+   * these values in their test HTML files.
+   */
+  const safeAreaStyle = document.createElement('style');
+  safeAreaStyle.innerHTML = `
+    :root {
+      --ion-safe-area-top: 0px;
+      --ion-safe-area-bottom: 0px;
+      --ion-safe-area-left: 0px;
+      --ion-safe-area-right: 0px;
+    }
+  `;
+  document.head.appendChild(safeAreaStyle);
+
   /**
    * The `palette` param is used to load a specific palette
    * for the theme.

core/src/components/app/test/safe-area/app.e2e.ts

@@ -53,11 +53,17 @@ configs({ directions: ['ltr'] }).forEach(({ config, title, screenshot }) => {
           // Remove the safe area class
           html.classList.remove('safe-area');
 
-          // Set the safe area inset variables
+          // Set the Capacitor safe area inset variables.
+          // Also set --ion-safe-area-* directly since test environments zero these out,
+          // which would prevent the CSS var() cascade from working.
           html.style.setProperty('--safe-area-inset-top', '10px');
           html.style.setProperty('--safe-area-inset-bottom', '20px');
           html.style.setProperty('--safe-area-inset-left', '30px');
           html.style.setProperty('--safe-area-inset-right', '40px');
+          html.style.setProperty('--ion-safe-area-top', 'var(--safe-area-inset-top)');
+          html.style.setProperty('--ion-safe-area-bottom', 'var(--safe-area-inset-bottom)');
+          html.style.setProperty('--ion-safe-area-left', 'var(--safe-area-inset-left)');
+          html.style.setProperty('--ion-safe-area-right', 'var(--safe-area-inset-right)');
         });
 
         const top = await page.evaluate(() =>