fix: hide navigation on keyboard visible

src/routes/-/RootLayout/components/Navigation/Navigation.tsx

@@ -1,6 +1,7 @@
 import { type AnyRoute, useMatchRoute, useNavigate } from "@tanstack/react-router";
 import { useTranslation } from "react-i18next";
 import { AnimatePresence } from "motion/react";
+import { useCallback, useEffect, useRef, useState } from "react";
 
 import GlassSurface from "@components/surface/GlassSurface";
 
@@ -12,7 +13,6 @@ import CashdeskRoute from "@/routes/cashdesk";
 import RouletteRoute from "@/routes/roulette";
 import TasksRoute from "@/routes/tasks";
 import EarningsRoute from "@/routes/earnings";
-import { useCallback, useEffect, useRef, useState } from "react";
 
 import shopIcon from "./assets/shop.svg";
 import apiaryIcon from "./assets/apiary.svg";
@@ -51,6 +51,37 @@ const MENU_ITEMS = [
   { key: "nav.earnings", route: EarningsRoute, icon: earningsIcon, delay: 0 },
 ];
 
+// 200px is larger than any OS chrome resize but smaller than the smallest software keyboard
+const KEYBOARD_THRESHOLD = 200;
+
+function useKeyboardVisible(): boolean {
+  const [keyboardVisible, setKeyboardVisible] = useState(false);
+  const baselineHeight = useRef<number>(0);
+
+  useEffect(() => {
+    const vv = window.visualViewport;
+    if (!vv) return;
+
+    baselineHeight.current = vv.height;
+
+    const handleResize = () => {
+      const newHeight = vv.height;
+
+      if (baselineHeight.current - newHeight > KEYBOARD_THRESHOLD) {
+        setKeyboardVisible(true);
+      } else {
+        setKeyboardVisible(false);
+        baselineHeight.current = newHeight;
+      }
+    };
+
+    vv.addEventListener("resize", handleResize);
+    return () => vv.removeEventListener("resize", handleResize);
+  }, []);
+
+  return keyboardVisible;
+}
+
 type BarProps = {
   labelKey: string;
   icon: string;
@@ -167,6 +198,7 @@ export default function Navigation() {
   const navigate = useNavigate();
   const [menuOpen, setMenuOpen] = useState<number>(0);
   const navRef = useRef<HTMLDivElement>(null);
+  const keyboardVisible = useKeyboardVisible();
 
   const handleOutsideClick = useCallback((e: MouseEvent) => {
     if (navRef.current && !navRef.current.contains(e.target as Node)) {
@@ -193,7 +225,7 @@ export default function Navigation() {
   };
 
   return (
-    <div ref={navRef}>
+    <div ref={navRef} className={keyboardVisible ? classes.hidden : undefined}>
       <div className={classes.menuOverlay}>
         <AnimatePresence>
           {menuOpen &&