diff --git a/apps/web/src/app/providers.tsx b/apps/web/src/app/providers.tsx
index f2f2fa4bd..31c3f7bb5 100644
--- a/apps/web/src/app/providers.tsx
+++ b/apps/web/src/app/providers.tsx
@@ -103,6 +103,44 @@ const theme = createTheme({
         },
       },
     },
+    // The installed app draws the page under the status and navigation bars
+    // (`viewport-fit=cover`), so every dialog and drawer keeps its content out
+    // of them. In a plain browser tab the insets are 0.
+    MuiDialog: {
+      styleOverrides: {
+        // A floating dialog is centred and sized within the safe area.
+        container: ({ ownerState }) =>
+          ownerState.fullScreen
+            ? {}
+            : {
+                boxSizing: "border-box",
+                paddingTop: "var(--omx-safe-top)",
+                paddingBottom: "var(--omx-safe-bottom)",
+                paddingLeft: "var(--omx-safe-left)",
+                paddingRight: "var(--omx-safe-right)",
+              },
+        // A full-screen dialog still covers the bars, with its content inset.
+        paperFullScreen: {
+          boxSizing: "border-box",
+          paddingTop: "var(--omx-safe-top)",
+          paddingBottom: "var(--omx-safe-bottom)",
+          paddingLeft: "var(--omx-safe-left)",
+          paddingRight: "var(--omx-safe-right)",
+        },
+      },
+    },
+    MuiDrawer: {
+      styleOverrides: {
+        // The screen edge the drawer is attached to and the two beside it;
+        // its open side faces the page, not a system bar.
+        paper: ({ ownerState }) => ({
+          ...(ownerState.anchor !== "bottom" && { paddingTop: "var(--omx-safe-top)" }),
+          ...(ownerState.anchor !== "top" && { paddingBottom: "var(--omx-safe-bottom)" }),
+          ...(ownerState.anchor !== "right" && { paddingLeft: "var(--omx-safe-left)" }),
+          ...(ownerState.anchor !== "left" && { paddingRight: "var(--omx-safe-right)" }),
+        }),
+      },
+    },
   },
 });
 
diff --git a/apps/web/src/components/admin/AdminLayout.tsx b/apps/web/src/components/admin/AdminLayout.tsx
index 385634bfb..9a8a8653d 100644
--- a/apps/web/src/components/admin/AdminLayout.tsx
+++ b/apps/web/src/components/admin/AdminLayout.tsx
@@ -57,7 +57,7 @@ export function AdminLayout({ children, user, selfHosted = false }: AdminLayoutP
               <Box
                 sx={{
                   flexGrow: 1,
-                  mt: `${TOPBAR_HEIGHT}px`,
+                  mt: `calc(${TOPBAR_HEIGHT}px + var(--omx-safe-top))`,
                   overflowY: "auto",
                 }}
               >
diff --git a/apps/web/src/components/admin/AdminTopBar.tsx b/apps/web/src/components/admin/AdminTopBar.tsx
index dbbc8f6af..a80270846 100644
--- a/apps/web/src/components/admin/AdminTopBar.tsx
+++ b/apps/web/src/components/admin/AdminTopBar.tsx
@@ -69,6 +69,7 @@ export function AdminTopBar({ user, sidebarOpen, onToggleSidebar }: AdminTopBarP
         borderBottom: "1px solid",
         borderColor: "divider",
         color: "text.primary",
+        pt: "var(--omx-safe-top)",
         width: { md: sidebarOpen ? `calc(100% - ${SIDEBAR_WIDTH}px)` : "100%" },
         ml: { md: sidebarOpen ? `${SIDEBAR_WIDTH}px` : 0 },
         transition:
diff --git a/apps/web/src/components/admin/ImpersonationBanner.tsx b/apps/web/src/components/admin/ImpersonationBanner.tsx
index f983ca002..50c321e7b 100644
--- a/apps/web/src/components/admin/ImpersonationBanner.tsx
+++ b/apps/web/src/components/admin/ImpersonationBanner.tsx
@@ -37,7 +37,9 @@ export function ImpersonationBanner() {
           left: 0,
           right: 0,
           zIndex: 9999,
-          height: 48,
+          boxSizing: "border-box",
+          height: "calc(48px + var(--omx-safe-top))",
+          pt: "calc(6px + var(--omx-safe-top))",
           "& .MuiAlert-message": {
             display: "flex",
             alignItems: "center",
@@ -61,7 +63,7 @@ export function ImpersonationBanner() {
         Impersonating <strong>{session.user.name}</strong> ({session.user.email})
       </Alert>
       {/* Spacer to push page content below the fixed banner */}
-      <div style={{ height: 48 }} />
+      <div style={{ height: "calc(48px + var(--omx-safe-top))" }} />
     </>
   );
 }
diff --git a/apps/web/src/components/map/street-level-imagery/StreetLevelInfoCard.tsx b/apps/web/src/components/map/street-level-imagery/StreetLevelInfoCard.tsx
index 5a5e387ac..a2a5a42b0 100644
--- a/apps/web/src/components/map/street-level-imagery/StreetLevelInfoCard.tsx
+++ b/apps/web/src/components/map/street-level-imagery/StreetLevelInfoCard.tsx
@@ -24,6 +24,7 @@ import { useEffect, useRef, useState } from "react";
 import { AttributionStrip } from "@/components/ui/AttributionStrip";
 import { AttributionText } from "@/components/ui/AttributionText";
 import { useMap } from "@/integration-api/map/MapContext";
+import { SEARCH_BAR_CLEARANCE } from "@/lib/layout";
 
 /** Capture month and year in the active locale, or null when unknown. */
 export function formatCaptureDate(capturedAt: string | undefined, locale: string): string | null {
@@ -98,14 +99,20 @@ export function StreetLevelInfoCard({
     <Box
       sx={{
         position: "absolute",
-        top: 80,
-        left: 12,
+        // Below the viewer's search bar, which already clears the status bar.
+        top: SEARCH_BAR_CLEARANCE,
+        left: "calc(12px + var(--omx-safe-left))",
         zIndex: 10,
         bgcolor: "rgba(30,30,30,0.9)",
         borderRadius: "12px",
         p: "12px 14px",
         minWidth: 260,
-        maxWidth: 340,
+        // On a phone the search bar spans the width, so the viewer's close
+        // button sits beside this card and needs its room.
+        maxWidth: {
+          xs: "calc(100% - 92px - var(--omx-safe-left) - var(--omx-safe-right))",
+          sm: 340,
+        },
         color: "#fff",
         backdropFilter: "blur(4px)",
       }}
diff --git a/apps/web/src/components/map/street-level-imagery/StreetLevelViewerInner.tsx b/apps/web/src/components/map/street-level-imagery/StreetLevelViewerInner.tsx
index 56c90f90b..d04476344 100644
--- a/apps/web/src/components/map/street-level-imagery/StreetLevelViewerInner.tsx
+++ b/apps/web/src/components/map/street-level-imagery/StreetLevelViewerInner.tsx
@@ -20,6 +20,7 @@ import { LocationMinimap } from "@/integration-api/components/LocationMinimap";
 import { useStreetLevelProviders } from "@/integration-api/components/useStreetLevelProviders";
 import { useMap } from "@/integration-api/map/MapContext";
 import { useEnv } from "@/integration-api/runtime/EnvProvider";
+import { SEARCH_BAR_CLEARANCE } from "@/lib/layout";
 import { StreetLevelFlatImage } from "./StreetLevelFlatImage";
 import { StreetLevelInfoCard } from "./StreetLevelInfoCard";
 import { fetchStreetLevelNode, pickPanoramaUrl, type StreetLevelNode } from "./useStreetLevelNode";
@@ -300,8 +301,8 @@ export default function StreetLevelViewerInner() {
         <Box
           sx={{
             position: "absolute",
-            right: 12,
-            bottom: 28,
+            right: "calc(12px + var(--omx-safe-right))",
+            bottom: "calc(28px + var(--omx-safe-bottom))",
             width: { xs: 132, sm: 196 },
             zIndex: 10,
           }}
@@ -349,8 +350,10 @@ export default function StreetLevelViewerInner() {
         aria-label={tc("close")}
         sx={{
           position: "absolute",
-          top: 8,
-          right: 8,
+          // On a phone the search bar spans the top, so the button goes below
+          // it; beside it on wider screens. Both clear the status bar.
+          top: { xs: SEARCH_BAR_CLEARANCE, sm: "calc(8px + var(--omx-safe-top))" },
+          right: "calc(8px + var(--omx-safe-right))",
           bgcolor: "rgba(0,0,0,0.5)",
           color: "#fff",
           borderRadius: "50%",
diff --git a/apps/web/src/components/panels/place/PlacePhotoGallery.tsx b/apps/web/src/components/panels/place/PlacePhotoGallery.tsx
index 295c5d639..c8b2c580f 100644
--- a/apps/web/src/components/panels/place/PlacePhotoGallery.tsx
+++ b/apps/web/src/components/panels/place/PlacePhotoGallery.tsx
@@ -29,6 +29,7 @@ import { MapCredits } from "@/components/map/MapCredits";
 import { LocationMinimap } from "@/integration-api/components/LocationMinimap";
 import { useMap } from "@/integration-api/map/MapContext";
 import { useDateTimeFormat } from "@/integration-api/runtime/useDateTimeFormat";
+import { SAFE_AREA_PADDING } from "@/lib/layout";
 import { useBackDismiss } from "@/lib/useBackDismiss";
 import { PhotoAttribution } from "./PhotoAttribution";
 
@@ -99,6 +100,8 @@ function PlacePhotoGalleryInner({ open, onClose, placeName, placeId, lat, lng }:
           display: "flex",
           flexDirection: "column",
           zIndex: 1400,
+          boxSizing: "border-box",
+          ...SAFE_AREA_PADDING,
         }}
       >
         {/* Top bar */}
diff --git a/apps/web/src/components/panels/sheet/detents.ts b/apps/web/src/components/panels/sheet/detents.ts
index 7a9fac922..60633b752 100644
--- a/apps/web/src/components/panels/sheet/detents.ts
+++ b/apps/web/src/components/panels/sheet/detents.ts
@@ -31,7 +31,9 @@ export interface SnapSlot {
   detent: "top" | Detent;
 }
 
-const MAX_HEIGHT = "94dvh";
+// Never under the status bar, whose height `dvh` does not know about when the
+// page is drawn beneath it.
+const MAX_HEIGHT = "min(94dvh, calc(100dvh - var(--omx-safe-top) - 8px))";
 
 export const PLACE_DETENTS: DetentConfig = {
   peek: "180px",
diff --git a/apps/web/src/integration-api/runtime/useFullScreenOnMobile.ts b/apps/web/src/integration-api/runtime/useFullScreenOnMobile.ts
index 0af60a809..ea9184c9c 100644
--- a/apps/web/src/integration-api/runtime/useFullScreenOnMobile.ts
+++ b/apps/web/src/integration-api/runtime/useFullScreenOnMobile.ts
@@ -15,9 +15,10 @@ import type { SystemStyleObject } from "@mui/system/styleFunctionSx";
  *     slotProps={{ paper: { sx: mobileFullScreenDialogPaperSx } }}
  *   />
  *
- * The shared paper sx squares off the corners on mobile, keeps the content
- * clear of the system bars, and vertically centers DialogContent when its children don't fill the viewport (using
- * `safe center` so long, scrollable content still starts at the top).
+ * The shared paper sx squares off the corners on mobile and vertically centers
+ * DialogContent when its children don't fill the viewport (using `safe center`
+ * so long, scrollable content still starts at the top). The theme keeps every
+ * full-screen dialog's content clear of the system bars.
  */
 export function useFullScreenOnMobile(): boolean {
   const theme = useTheme();
@@ -26,11 +27,6 @@ export function useFullScreenOnMobile(): boolean {
 
 export const mobileFullScreenDialogPaperSx: SystemStyleObject<Theme> = {
   borderRadius: { xs: 0, sm: "12px" },
-  // A full-screen dialog covers the status bar and home indicator wherever the
-  // page draws edge to edge (an installed PWA, the installed app), so its
-  // content keeps clear of the system bars there.
-  paddingTop: { xs: "var(--omx-safe-top)", sm: 0 },
-  paddingBottom: { xs: "var(--omx-safe-bottom)", sm: 0 },
   "& .MuiDialogContent-root": {
     display: { xs: "flex", sm: "block" },
     flexDirection: "column",
diff --git a/apps/web/src/lib/layout.ts b/apps/web/src/lib/layout.ts
index 31d89e66e..d15651b1f 100644
--- a/apps/web/src/lib/layout.ts
+++ b/apps/web/src/lib/layout.ts
@@ -1,4 +1,17 @@
 /** Shared layout constants for the sidebar panels. */
+
+/**
+ * Padding that keeps a full-screen surface's content out of the system bars
+ * and display cutouts. The installed app and an installed web app draw the
+ * page under them (`viewport-fit=cover`); in a plain browser tab the insets
+ * are 0, so this changes nothing there.
+ */
+export const SAFE_AREA_PADDING = {
+  pt: "var(--omx-safe-top)",
+  pb: "var(--omx-safe-bottom)",
+  pl: "var(--omx-safe-left)",
+  pr: "var(--omx-safe-right)",
+} as const;
 export const PANEL_WIDTH = 400;
 
 /** Offset of the floating search bar from the top and left edges of the map. */