Answer stability round 1: 0 🔴, 1 🟡 (0 misread); test the drawer opens and a link in it navigates, keep the in-flow sidebar from stretching

e2e-tests/visual.spec.ts

@@ -148,6 +148,21 @@ test("mobile layout hides the sidebar off-canvas behind the hamburger", async ({
   expect(offCanvas).toBe(true);
 });
 
+test("the hamburger opens the drawer over the scrim, and a link in it navigates", async ({ page }) => {
+  await page.setViewportSize({ width: 390, height: 844 });
+  await page.goto("/dashboard");
+  await page.locator(".hamburger").click();
+
+  const sidebar = page.locator(".sidebar");
+  await expect(sidebar).toBeInViewport({ ratio: 1 });
+  // A click is refused while the scrim sits above the drawer, which a lower z-index would cause.
+  await sidebar.locator("summary").first().click(); // the dashboard is the current page, so its links are in a folded branch
+  const link = sidebar.locator(".nav-children a.nav-self").first();
+  const target = await link.getAttribute("href");
+  await link.click();
+  await expect(page).toHaveURL((url) => url.pathname === target?.split("?")[0]);
+});
+
 test("Sign-out is a CSRF-guarded POST form: the token is issued on the page, a tokenless POST is refused", async ({ page }) => {
   await page.goto("/dashboard");
   // The page issues a CSRF cookie and embeds the same token in the Sign-out form (double-submit).

public/css/styles.css

@@ -2,9 +2,6 @@
    App Shell Template — pure HTML/CSS, no JavaScript
    -------------------------------------------------------------
    Architecture
-   - Design tokens are two raw palettes picked by a theme block, so
-     the theme follows the system by default and can be forced
-     Light / Dark via radio + :has().
    - Everything is a reusable "block": .nav-item, .filter,
      .chip, .badge, .btn, .menu, .table — combine freely.
    ============================================================= */
@@ -682,13 +679,13 @@ th[aria-sort="descending"] .sort-ico { transform: rotate(180deg); }
 /* ---------- 11. RESPONSIVE / HAMBURGER --------------------- */
 .scrim { display: none; }
 
-/* Off-canvas only where :has() works: without it nothing can read #nav-toggle, so the sidebar
-   stays in the flow above the content and the hamburger stays hidden. */
 @media (max-width: 860px) {
-  .app { grid-template-columns: minmax(0, 1fr); }
-  .content { grid-column: 1; }
+  .app { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto 1fr; }
+  .content { grid-column: 1; grid-row: 2; }
   .search { min-width: 150px; flex: 1 1 auto; }
 
+  /* Off-canvas only where :has() works: without it nothing can read #nav-toggle, so the sidebar
+     stays in the flow above the content and the hamburger stays hidden. */
   @supports selector(:has(a)) {
     .sidebar {
       position: fixed; inset: 0 auto 0 0; width: min(86vw, var(--nav-w));