diff --git a/ChessCubing.App/wwwroot/js/chesscubing-interop.js b/ChessCubing.App/wwwroot/js/chesscubing-interop.js
index 0fceb13..71d2499 100644
--- a/ChessCubing.App/wwwroot/js/chesscubing-interop.js
+++ b/ChessCubing.App/wwwroot/js/chesscubing-interop.js
@@ -3,6 +3,9 @@
   let viewportStarted = false;
   let audioContext = null;
   let authModalMessageHandler = null;
+  let menuScrollStarted = false;
+  let menuLastScrollY = 0;
+  let menuAnimationFrame = 0;
 
   function syncViewportHeight() {
     const visibleHeight = window.visualViewport?.height ?? window.innerHeight;
@@ -38,6 +41,63 @@
     window.requestAnimationFrame(() => window.requestAnimationFrame(syncViewportHeight));
   }
 
+  function setMenuHidden(hidden) {
+    document.body.classList.toggle("site-menu-hidden", hidden);
+  }
+
+  function syncMenuVisibility() {
+    menuAnimationFrame = 0;
+
+    const menu = document.querySelector(".site-menu-shell");
+    if (!menu) {
+      setMenuHidden(false);
+      menuLastScrollY = window.scrollY || window.pageYOffset || 0;
+      return;
+    }
+
+    const modalIsOpen = document.querySelector(".modal:not(.hidden)");
+    if (modalIsOpen) {
+      setMenuHidden(false);
+      menuLastScrollY = window.scrollY || window.pageYOffset || 0;
+      return;
+    }
+
+    const currentScrollY = Math.max(window.scrollY || window.pageYOffset || 0, 0);
+    const delta = currentScrollY - menuLastScrollY;
+
+    if (currentScrollY <= 24 || delta < -10) {
+      setMenuHidden(false);
+    } else if (delta > 10 && currentScrollY > 120) {
+      setMenuHidden(true);
+    }
+
+    menuLastScrollY = currentScrollY;
+  }
+
+  function queueMenuVisibilitySync() {
+    if (menuAnimationFrame) {
+      return;
+    }
+
+    menuAnimationFrame = window.requestAnimationFrame(syncMenuVisibility);
+  }
+
+  function startMenuScrollTracking() {
+    if (menuScrollStarted) {
+      queueMenuVisibilitySync();
+      return;
+    }
+
+    menuScrollStarted = true;
+    menuLastScrollY = window.scrollY || window.pageYOffset || 0;
+    window.addEventListener("scroll", queueMenuVisibilitySync, { passive: true });
+    window.addEventListener("pageshow", queueMenuVisibilitySync);
+    window.addEventListener("resize", queueMenuVisibilitySync);
+    window.addEventListener("hashchange", queueMenuVisibilitySync);
+    window.setTimeout(queueMenuVisibilitySync, 0);
+    window.setTimeout(queueMenuVisibilitySync, 150);
+  }
+
   function getAudioContext() {
     const AudioContextClass = window.AudioContext || window.webkitAudioContext;
     if (!AudioContextClass) {
@@ -114,6 +174,11 @@
     start: startViewport,
   };
 
+  window.chesscubingMenu = {
+    start: startMenuScrollTracking,
+    sync: queueMenuVisibilitySync,
+  };
+
   window.chesscubingStorage = {
     getMatchState(storageKey, windowNameKey) {
       try {
@@ -246,4 +311,5 @@
   };
 
   startViewport();
+  startMenuScrollTracking();
 })();
diff --git a/styles.css b/styles.css
index 3500b1b..e335631 100644
--- a/styles.css
+++ b/styles.css
@@ -1035,6 +1035,10 @@ body[data-page="cube"] .zone-button.cube-hold-ready::after {
   width: 100%;
   margin: 0;
   padding: var(--safe-top) 0 0;
+  transition:
+    transform 220ms ease,
+    opacity 220ms ease;
+  will-change: transform, opacity;
 }
 
 .site-menu-bar {
@@ -1044,6 +1048,12 @@ body[data-page="cube"] .zone-button.cube-hold-ready::after {
   backdrop-filter: blur(18px);
 }
 
+body.site-menu-hidden .site-menu-shell {
+  transform: translateY(-100%);
+  opacity: 0;
+  pointer-events: none;
+}
+
 .site-menu-main {
   display: grid;
   grid-template-columns: auto minmax(0, 1fr) auto;