diff --git a/lib/rdoc/generator/template/aliki/_header.rhtml b/lib/rdoc/generator/template/aliki/_header.rhtml
index 39dde3f06c..1be14d3bde 100644
--- a/lib/rdoc/generator/template/aliki/_header.rhtml
+++ b/lib/rdoc/generator/template/aliki/_header.rhtml
@@ -8,7 +8,7 @@
     <form action="#" method="get" accept-charset="utf-8">
       <input id="search-field" role="combobox" aria-label="Search"
              aria-autocomplete="list" aria-controls="search-results-desktop"
-             type="text" name="search" placeholder="Search (/) for a class, method..."
+             type="text" name="search" placeholder="Search globally [/] or inside the class [(Shift) s]"
              spellcheck="false" autocomplete="off"
              title="Type to search, Up and Down to navigate, Enter to load">
       <ul id="search-results-desktop" aria-label="Search Results"
diff --git a/lib/rdoc/generator/template/aliki/js/aliki.js b/lib/rdoc/generator/template/aliki/js/aliki.js
index cf13889bae..286ba3ca94 100644
--- a/lib/rdoc/generator/template/aliki/js/aliki.js
+++ b/lib/rdoc/generator/template/aliki/js/aliki.js
@@ -75,6 +75,28 @@ function createSearchInstance(input, result) {
   return search;
 }
 
+// Auto-complete namespace separator '::' when user types ':'
+// For both desktop and mobile search inputs
+function autoCompleteColons(input, e) {
+  if (e.key !== ':' || e.ctrlKey || e.metaKey || e.altKey) {
+    return;
+  }
+
+  const start = input.selectionStart;
+  const end = input.selectionEnd;
+  if (start === null || end === null) {
+    return;
+  }
+
+  e.preventDefault();
+
+  const value = input.value;
+  input.value = value.slice(0, start) + '::' + value.slice(end);
+
+  const caret = start + 2;
+  input.setSelectionRange(caret, caret);
+}
+
 function hookSearch() {
   const input  = document.querySelector('#search-field');
   const result = document.querySelector('#search-results-desktop');
@@ -96,6 +118,14 @@ function hookSearch() {
     }
   });
 
+  // Hide search results on Escape key on desktop too
+  document.addEventListener('keydown', (e) => {
+    if (e.key === 'Escape' && input.matches(":focus")) {
+      search.hide();
+      input.blur();
+    }
+  });
+
   // Show search results when focusing on input (if there's a query)
   input.addEventListener('focus', () => {
     if (input.value.trim()) {
@@ -103,6 +133,37 @@ function hookSearch() {
     }
   });
 
+  // Auto-complete '::' when user types ':'
+  input.addEventListener('keydown', (e) => autoCompleteColons(input, e));
+
+  // Keyboard shortcuts for search
+  //   "/" for global search
+  //   "s" for instance methods (#)
+  //   "Shift+s" for class methods (::)
+  document.addEventListener('keydown', (e) => {
+    if (document.activeElement.tagName === 'INPUT') {
+      return;
+    }
+
+    if (e.key === "/") {
+      e.preventDefault();
+      input.value = '';
+      input.focus();
+    } else if (e.key === "s" || e.key === "S") {
+      e.preventDefault();
+      // Fill search field with current module name and scope by method type
+      const moduleName = getCurrentModuleName();
+      if (moduleName) {
+        const suffix = e.shiftKey ? '::' : '#';
+        input.value = moduleName + suffix;
+        input.focus();
+      } else {
+        // Fallback to regular focus if not on a module page
+        input.focus();
+      }
+    }
+  });
+
   // Check for ?q= URL parameter and trigger search automatically
   if (typeof URLSearchParams !== 'undefined') {
     const urlParams = new URLSearchParams(window.location.search);
@@ -114,18 +175,23 @@ function hookSearch() {
   }
 }
 
-/* ===== Keyboard Shortcuts ===== */
+/**
+ * Extract module/class name from URL path
+ *
+ * Examples:
+ *   /_site/String.html -> String
+ *   /_site/String/Example.html -> String::Example
+ */
+function getCurrentModuleName() {
 
-function hookFocus() {
-  document.addEventListener("keydown", (event) => {
-    if (document.activeElement.tagName === 'INPUT') {
-      return;
-    }
-    if (event.key === "/") {
-      event.preventDefault();
-      document.querySelector('#search-field').focus();
-    }
-  });
+  const path = window.location.pathname; // Ignore the fragment
+
+  // In some cases, there may be no file extensions
+  const match = path.match(/\/([A-Z]\w*(?:\/[A-Z]\w*)*)(\.(html|md|rdoc))?$/);
+
+  if (!match) return null;
+
+  return match[1].replace(/\//g, '::');
 }
 
 /* ===== Mobile Navigation ===== */
@@ -378,6 +444,10 @@ function hookSearchModal() {
     }
   });
 
+  // Auto-complete '::' when user types ':'
+  searchInput.addEventListener('keydown', (e) => autoCompleteColons(searchInput, e));
+
+
   // Check for ?q= URL parameter on mobile and open modal
   if (typeof URLSearchParams !== 'undefined') {
     const urlParams = new URLSearchParams(window.location.search);
@@ -495,7 +565,6 @@ function showCopySuccess(button) {
 document.addEventListener('DOMContentLoaded', () => {
   hookSourceViews();
   hookSearch();
-  hookFocus();
   hookSidebar();
   generateToc();
   setHeadingSelfLinkScrollHandlers();
diff --git a/lib/rdoc/generator/template/aliki/js/search_controller.js b/lib/rdoc/generator/template/aliki/js/search_controller.js
index e91bdbe93a..dfb75696ef 100644
--- a/lib/rdoc/generator/template/aliki/js/search_controller.js
+++ b/lib/rdoc/generator/template/aliki/js/search_controller.js
@@ -126,4 +126,3 @@ SearchController.prototype = Object.assign({}, SearchNavigation, new function()
     this.setNavigationActive(true);
   }
 });
-