diff --git a/src/components/elements/list/list-item.tsx b/src/components/elements/list/list-item.tsx
index 9b707f9a9..54227dfcc 100644
--- a/src/components/elements/list/list-item.tsx
+++ b/src/components/elements/list/list-item.tsx
@@ -47,10 +47,11 @@ const ListItem: FunctionComponent<ListItemModel> = memo(
      * @param {string} id - Item identifier
      */
     const handleKeyPress = useCallback((ev: KeyboardEvent, id: string) => {
-      if (ev.key === 'Enter') {
+      if (ev.key === 'Enter' || ev.key === ' ') {
+        ev.preventDefault();
         handleOnClick(id);
       }
-    }, []);
+    }, [handleOnClick]);
 
     return (
       <ListItemStyle
@@ -61,7 +62,10 @@ const ListItem: FunctionComponent<ListItemModel> = memo(
         $active={active}
         tabIndex={0}
         $selectable={selectable}
-        onKeyUp={(ev) => handleKeyPress(ev, id)}
+        onKeyDown={(ev) => handleKeyPress(ev, id)}
+        role="listitem"
+        aria-selected={active}
+        aria-describedby={description ? `${id}-description` : undefined}
       >
         {selectable ? (
           <CheckboxWrapper>
@@ -77,9 +81,11 @@ const ListItem: FunctionComponent<ListItemModel> = memo(
         ) : null}
         <StyleAndDescription $selectable={selectable}>
           <TitleStyle theme={theme}>{title}</TitleStyle>
-          <TitleDescriptionStyle theme={theme}>
-            {description}
-          </TitleDescriptionStyle>
+          {description && (
+            <TitleDescriptionStyle theme={theme} id={`${id}-description`}>
+              {description}
+            </TitleDescriptionStyle>
+          )}
         </StyleAndDescription>
       </ListItemStyle>
     );
diff --git a/src/components/elements/list/list.styles.ts b/src/components/elements/list/list.styles.ts
index 800daec9f..018211aa3 100644
--- a/src/components/elements/list/list.styles.ts
+++ b/src/components/elements/list/list.styles.ts
@@ -77,24 +77,40 @@ export const ListItemStyle = styled.li<{
     p.$active ? themeStyles.border(p.$theme) : themeStyles.transparent};
   flex-direction: ${(p) => (p.$selectable ? 'row' : 'column')};
   background: ${(p) => p.$theme.toolbarBtnBgColor};
-  padding: 0.25rem;
-  width: calc(100% - 0.5rem);
+  padding: 0.5rem;
+  width: calc(100% - 1rem);
   user-select: none;
+  border-radius: 4px;
+  transition: all 0.15s ease-out;
+  margin-bottom: 0.625rem;
+
+  &:last-child {
+    margin-bottom: 0;
+  }
 
   &:hover {
     border: ${(p) => themeStyles.border(p.$theme)};
     cursor: pointer;
+    background: ${(p) => p.$theme.buttonHoverBgColor || p.$theme.toolbarBtnBgColor};
+  }
+
+  &:focus-visible {
+    outline: 2px solid ${(p) => p.$theme.primary || '#0077ff'};
+    outline-offset: 2px;
   }
 `;
 
 // Title styles
 export const TitleStyle = styled.h1<{ theme: Theme }>`
   color: ${(p) => p.theme.iconColor || p.theme.primary};
-  font-size: 1rem;
-  font-weight: normal;
-  margin: 0.2rem 0;
+  font-size: 0.95rem;
+  font-weight: 500;
+  margin: 0 0 0.25rem 0;
   text-align: left;
+  overflow: hidden;
+  text-overflow: ellipsis;
   white-space: nowrap;
+  max-width: 100%;
   align-self: flex-start;
 `;
 
@@ -103,39 +119,46 @@ export const TitleDescriptionStyle = styled.p<{ theme: Theme }>`
   font-size: 0.8rem;
   font-weight: normal;
   margin: 0;
-  padding: 0.1rem;
+  padding: 0;
   text-align: left;
   width: 100%;
   color: ${(p) => p.theme.cardSubtitleColor};
+  line-height: 1.3;
 `;
 
 // Checkbox components with improved structure
 export const CheckboxWrapper = styled.span`
   ${flexContainer}
-  width: 2rem;
+  width: 1.75rem;
+  min-width: 1.75rem;
   justify-content: center;
+  align-items: center;
 `;
 
 export const CheckboxStyle = styled.span<{ selected?: boolean; theme: Theme }>`
   ${flexContainer}
   justify-content: center;
-  width: 1.25rem;
-  height: 1.25rem;
-  margin: 0 0.25rem 0 0.1rem;
-  border-radius: 50%;
-  background: ${(p) => (p.selected ? p.theme.primary : p.theme.toolbarBgColor)};
-  ${(p) => !p.selected && `box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1)`};
-  color: #ffffff;
-
-  svg {
-    width: 80%;
-    height: 80%;
+  align-items: center;
+  border: 1px solid ${(p) => p.theme.buttonBorderColor || p.theme.primary};
+  border-radius: 3px;
+  height: 18px;
+  width: 18px;
+  background: ${(p) => (p.selected ? p.theme.primary : 'transparent')};
+  color: white;
+  transition: all 0.15s ease-out;
+
+  & svg {
+    height: 12px;
+    width: 12px;
+    display: ${(p) => (p.selected ? 'block' : 'none')};
   }
 `;
 
-// Content wrapper with conditional width
+// Wrapper for title and description in selectable mode
 export const StyleAndDescription = styled.div<{ $selectable?: boolean }>`
-  ${flexContainer}
+  display: flex;
   flex-direction: column;
-  width: ${(p) => (p.$selectable ? 'calc(100% - 2rem)' : '100%')};
+  width: 100%;
+  overflow: hidden;
+  padding-left: ${(p) => (p.$selectable ? '0.5rem' : '0')};
 `;
diff --git a/src/components/elements/popover/index.tsx b/src/components/elements/popover/index.tsx
index af08d45fc..3c6d0f72e 100644
--- a/src/components/elements/popover/index.tsx
+++ b/src/components/elements/popover/index.tsx
@@ -7,6 +7,7 @@ import React, {
   memo,
 } from 'react';
 import useCloseClickOutside from 'src/components/effects/useCloseClickOutside';
+import { useFocusTrap } from 'src/hooks/useFocusTrap';
 import { ChevronDown, CloseIcon } from 'src/components/icons';
 import { PopOverModel } from './popover.model';
 import {
@@ -52,7 +53,7 @@ const popoverReducer = (state: State, action: Action): State => {
  */
 const PopOver: FunctionComponent<PopOverModel> = ({
   children,
-  position,
+  position = 'bottom', // Default to bottom positioning
   placeholder,
   theme,
   width = 350,
@@ -61,6 +62,8 @@ const PopOver: FunctionComponent<PopOverModel> = ({
   $isMobile = false,
 }) => {
   const ref = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLDivElement>(null);
+  
   const [state, dispatch] = useReducer(popoverReducer, {
     open: false,
     isVisible: false,
@@ -73,12 +76,21 @@ const PopOver: FunctionComponent<PopOverModel> = ({
   const closePopover = useCallback(() => {
     dispatch({ type: 'CLOSE' });
   }, []);
+  
+  const focusTrapRef = useFocusTrap(state.open, closePopover);
 
   const handleKeyPress = useCallback((ev: React.KeyboardEvent) => {
-    if (ev.key === 'Enter') {
+    if (ev.key === 'Enter' || ev.key === ' ') {
+      ev.preventDefault();
+      dispatch({ type: 'TOGGLE' });
+    } else if (ev.key === 'Escape' && state.open) {
+      ev.preventDefault();
+      dispatch({ type: 'CLOSE' });
+    } else if (ev.key === 'ArrowDown' && !state.open) {
+      ev.preventDefault();
       dispatch({ type: 'TOGGLE' });
     }
-  }, []);
+  }, [state.open]);
 
   useCloseClickOutside(ref, closePopover);
 
@@ -93,28 +105,38 @@ const PopOver: FunctionComponent<PopOverModel> = ({
     }
   }, [state.open]);
 
+  // Return focus to trigger when popover closes
+  useEffect(() => {
+    if (!state.open && triggerRef.current) {
+      triggerRef.current.focus();
+    }
+  }, [state.open]);
+
   return (
-    <>
-      <PopoverWrapper ref={ref}>
-        <Selecter
-          role="button"
-          onClick={toggleOpen}
-          $theme={theme}
-          $open={state.open}
-          $isDarkMode={isDarkMode}
-          tabIndex={0}
-          onKeyUp={handleKeyPress}
-          $isMobile={$isMobile}
-          title={placeholder}
-        >
-          <SelecterIcon $theme={theme} $open={state.open}>
-            {icon || <ChevronDown />}
-          </SelecterIcon>
-          {placeholder && !$isMobile ? (
-            <SelecterLabel>{placeholder}</SelecterLabel>
-          ) : null}
-        </Selecter>
-      </PopoverWrapper>
+    <PopoverWrapper ref={ref}>
+      <Selecter
+        role="button"
+        onClick={toggleOpen}
+        $theme={theme}
+        $open={state.open}
+        $isDarkMode={isDarkMode}
+        tabIndex={0}
+        onKeyDown={handleKeyPress}
+        $isMobile={$isMobile}
+        title={placeholder}
+        aria-expanded={state.open}
+        aria-haspopup="menu"
+        aria-controls={state.open ? 'popover-content' : undefined}
+        id="popover-trigger"
+        ref={triggerRef}
+      >
+        <SelecterIcon $theme={theme} $open={state.open}>
+          {icon || <ChevronDown />}
+        </SelecterIcon>
+        {placeholder && !$isMobile ? (
+          <SelecterLabel>{placeholder}</SelecterLabel>
+        ) : null}
+      </Selecter>
       {state.open ? (
         <PopoverHolder
           $position={position}
@@ -122,16 +144,25 @@ const PopOver: FunctionComponent<PopOverModel> = ({
           $theme={theme}
           $isMobile={$isMobile}
           $visible={state.isVisible}
+          id="popover-content"
+          role="menu"
+          aria-labelledby="popover-trigger"
+          ref={focusTrapRef}
         >
           <Header>
-            <CloseButton theme={theme} onClick={closePopover}>
+            <CloseButton 
+              theme={theme} 
+              onClick={closePopover}
+              aria-label="Close popover"
+              title="Close popover"
+            >
               <CloseIcon />
             </CloseButton>
           </Header>
           <MemoizedContent>{children}</MemoizedContent>
         </PopoverHolder>
       ) : null}
-    </>
+    </PopoverWrapper>
   );
 };
 
diff --git a/src/components/elements/popover/popover.styles.ts b/src/components/elements/popover/popover.styles.ts
index 383c269d9..7827e142f 100644
--- a/src/components/elements/popover/popover.styles.ts
+++ b/src/components/elements/popover/popover.styles.ts
@@ -26,7 +26,10 @@ const getInteractiveShadow = (theme: Theme, isOpen?: boolean) =>
 const BORDER_RADIUS = '6px';
 
 // Base wrapper for the popover component
-export const PopoverWrapper = styled.div``;
+export const PopoverWrapper = styled.div`
+  position: relative;
+  display: inline-block;
+`;
 
 // Main popover container with positioning and visibility controls
 export const PopoverHolder = styled.div<{
@@ -44,18 +47,21 @@ export const PopoverHolder = styled.div<{
   box-shadow: ${({ $theme }) => getElevatedShadow($theme)};
   max-height: 500px;
   overflow-y: auto;
-  padding: 0.5rem;
+  padding: 0.75rem;
   position: absolute;
-  ${(p) => (p.$position === 'bottom' ? `bottom: 3.5rem` : `top: 4rem`)};
-  ${(p) => (p.$isMobile ? 'left: 4px;' : '')};
+  top: calc(100% + 8px);
+  bottom: auto;
+  left: 0;
+  z-index: ${zIndex.popover};
   width: ${({ $isMobile, $width = 300 }) =>
-    $isMobile ? '90%' : `${$width}px`};
+    $isMobile ? 'calc(100vw - 2rem)' : `${$width}px`};
   opacity: ${({ $visible }) => ($visible ? 1 : 0)};
+  visibility: ${({ $visible }) => ($visible ? 'visible' : 'hidden')};
   transition:
     opacity 0.2s ease-in-out,
-    transform 0.2s ease-in-out;
-  transform: ${(p) => (p.$visible ? 'translateY(0)' : 'translateY(-10px)')};
-  z-index: ${zIndex.popover}; /* Use standardized z-index for popovers */
+    transform 0.2s ease-in-out,
+    visibility 0.2s ease-in-out;
+  transform: ${(p) => (p.$visible ? 'translateY(0)' : 'translateY(-8px)')};
 `;
 
 // Clickable selector button that triggers the popover
@@ -73,13 +79,14 @@ export const Selecter = styled.div<{
   box-shadow: ${({ $open, $theme }) => getInteractiveShadow($theme, $open)};
   cursor: pointer;
   justify-content: space-between;
-  padding: ${(p) => (p.$isMobile ? '0.4rem' : `0.4rem 0.5rem`)};
+  padding: ${(p) => (p.$isMobile ? '0.5rem 0.6rem' : `0.5rem 0.75rem`)};
   user-select: none;
-  margin-right: 0.5rem;
+  margin-right: 0.75rem;
+  min-height: 36px;
   transition:
-    background-color 0.2s ease-out,
-    border-color 0.2s ease-out,
-    box-shadow 0.2s ease-out;
+    background-color 0.15s ease-out,
+    border-color 0.15s ease-out,
+    box-shadow 0.15s ease-out;
 
   &:hover {
     background: ${({ $theme }) =>
@@ -87,6 +94,11 @@ export const Selecter = styled.div<{
     border-color: ${({ $theme }) =>
       $theme.buttonHoverBorderColor || $theme.primary};
   }
+
+  &:focus-visible {
+    outline: 2px solid ${({ $theme }) => $theme.primary || '#0077ff'};
+    outline-offset: 2px;
+  }
 `;
 
 // Icon component within the selector with rotation animation
@@ -96,7 +108,8 @@ export const SelecterIcon = styled.span<{ $open: boolean; $theme: Theme }>`
   height: 1.25rem;
   width: 1.25rem;
   transition: transform 0.2s ease-in-out;
-  margin-right: 0.1rem;
+  margin-right: 0.5rem;
+  transform: ${({ $open }) => ($open ? 'rotate(180deg)' : 'rotate(0)')};
 
   & svg {
     height: 100%;
@@ -114,15 +127,32 @@ export const SelecterLabel = styled.span`
 
 // Top section of the popover containing controls
 export const Header = styled.div`
-  height: 30px;
+  display: flex;
+  justify-content: flex-end;
+  align-items: center;
   width: 100%;
+  padding-bottom: 0.5rem;
 `;
 
 // Scrollable content area of the popover
 export const Content = styled.div`
-  height: calc(100% - 30px);
-  overflow-y: auto;
   width: 100%;
+  overflow-y: auto;
+  max-height: 400px;
+  scrollbar-width: thin;
+
+  &::-webkit-scrollbar {
+    width: 6px;
+  }
+
+  &::-webkit-scrollbar-track {
+    background: transparent;
+  }
+
+  &::-webkit-scrollbar-thumb {
+    background: rgba(0, 0, 0, 0.2);
+    border-radius: 3px;
+  }
 `;
 
 // Close button with icon for dismissing the popover
@@ -132,6 +162,19 @@ export const CloseButton = styled.button<{ theme: Theme }>`
   border: none;
   color: ${({ theme }) => theme.iconColor || theme.primary};
   cursor: pointer;
-  margin-bottom: 0.5rem;
-  margin-left: auto;
+  padding: 0.25rem;
+  margin: 0;
+  height: 28px;
+  width: 28px;
+  border-radius: 4px;
+  transition: background-color 0.15s ease;
+
+  &:hover {
+    background-color: rgba(0, 0, 0, 0.05);
+  }
+
+  &:focus-visible {
+    outline: 2px solid ${({ theme }) => theme.primary || '#0077ff'};
+    outline-offset: 2px;
+  }
 `;
diff --git a/src/components/timeline-elements/memoized/expand-button-memo.tsx b/src/components/timeline-elements/memoized/expand-button-memo.tsx
index c03f2d7a4..77b50bcf7 100644
--- a/src/components/timeline-elements/memoized/expand-button-memo.tsx
+++ b/src/components/timeline-elements/memoized/expand-button-memo.tsx
@@ -17,12 +17,18 @@ const ExpandButtonMemo = memo<ExpandButtonModel>(
     return textOverlay ? (
       <ExpandButton
         onPointerDown={onExpand}
-        onKeyDown={(ev) => ev.key === 'Enter' && onExpand?.(ev)}
+        onKeyDown={(ev) => {
+          if (ev.key === 'Enter' || ev.key === ' ') {
+            ev.preventDefault();
+            onExpand?.(ev);
+          }
+        }}
         theme={theme}
         aria-expanded={expanded}
         tabIndex={0}
         aria-label={label}
         title={label}
+        role="button"
       >
         {expanded ? <MinimizeIcon /> : <MaximizeIcon />}
       </ExpandButton>
diff --git a/src/components/timeline-elements/memoized/show-hide-button.tsx b/src/components/timeline-elements/memoized/show-hide-button.tsx
index 6ff397eaa..4a6436371 100644
--- a/src/components/timeline-elements/memoized/show-hide-button.tsx
+++ b/src/components/timeline-elements/memoized/show-hide-button.tsx
@@ -19,9 +19,15 @@ const ShowOrHideTextButtonMemo = memo<ShowHideTextButtonModel>(
         onPointerDown={onToggle}
         theme={theme}
         tabIndex={0}
-        onKeyDown={(ev) => ev.key === 'Enter' && onToggle?.(ev)}
+        onKeyDown={(ev) => {
+          if (ev.key === 'Enter' || ev.key === ' ') {
+            ev.preventDefault();
+            onToggle?.(ev);
+          }
+        }}
         aria-label={label}
         title={label}
+        aria-pressed={show}
       >
         {show ? <MinusIcon /> : <PlusIcon />}
       </ShowHideTextButton>
diff --git a/src/components/timeline-elements/timeline-card-content/__tests__/__snapshots__/content-header.test.tsx.snap b/src/components/timeline-elements/timeline-card-content/__tests__/__snapshots__/content-header.test.tsx.snap
index bd726c39c..7a95d4716 100644
--- a/src/components/timeline-elements/timeline-card-content/__tests__/__snapshots__/content-header.test.tsx.snap
+++ b/src/components/timeline-elements/timeline-card-content/__tests__/__snapshots__/content-header.test.tsx.snap
@@ -3,16 +3,16 @@
 exports[`Content Header > should match the snapshot 1`] = `
 <div>
   <header
-    class="sc-dTdQuR sLIMt"
+    class="sc-dYwGCk jmCnZH"
   >
     <span
-      class="sc-kieALA hrJNaI card-title"
+      class="sc-kcLKEh gOJTBo card-title"
       data-class="card-title"
     >
       title
     </span>
     <span
-      class="sc-dibcMh fZIxpr card-sub-title card-subtitle"
+      class="sc-dntSTA hTcZlr card-sub-title card-subtitle"
     >
       content
     </span>
diff --git a/src/components/timeline-elements/timeline-card-content/content-footer.tsx b/src/components/timeline-elements/timeline-card-content/content-footer.tsx
index fe3696bd4..a37e3f520 100644
--- a/src/components/timeline-elements/timeline-card-content/content-footer.tsx
+++ b/src/components/timeline-elements/timeline-card-content/content-footer.tsx
@@ -66,14 +66,18 @@ const ContentFooter: FunctionComponent<ContentFooterProps> = ({
         <ShowMore
           className="show-more"
           onPointerDown={handleClick}
-          onKeyUp={(event) => {
-            if (event.key === 'Enter') {
+          onKeyDown={(event) => {
+            if (event.key === 'Enter' || event.key === ' ') {
+              event.preventDefault();
               onExpand();
             }
           }}
           show={canShow ? 'true' : 'false'}
           theme={theme}
           tabIndex={0}
+          role="button"
+          aria-expanded={showMore}
+          aria-label={showMore ? 'Show less content' : 'Show more content'}
         >
           {<span>{showMore ? 'read less' : 'read more'}</span>}
           <ChevronIconWrapper collapsed={showMore ? 'true' : 'false'}>
diff --git a/src/components/timeline-elements/timeline-card-content/timeline-card-content.tsx b/src/components/timeline-elements/timeline-card-content/timeline-card-content.tsx
index 5f81e2ca2..c7a773f81 100644
--- a/src/components/timeline-elements/timeline-card-content/timeline-card-content.tsx
+++ b/src/components/timeline-elements/timeline-card-content/timeline-card-content.tsx
@@ -209,7 +209,23 @@ const TimelineCardContent: React.FunctionComponent<TimelineContentModel> =
       // Set focus when needed and ensure entire card row is completely visible
       useEffect(() => {
         if (hasFocus && active && containerRef.current) {
-          containerRef.current.focus();
+          // Check if there's an active search input on the page to avoid stealing focus
+          const activeElement = document.activeElement;
+          const isSearchInputFocused = activeElement && 
+            (activeElement instanceof HTMLInputElement && activeElement.type === 'search') ||
+            activeElement?.getAttribute('type') === 'search' ||
+            activeElement?.getAttribute('placeholder')?.toLowerCase().includes('search');
+
+          // Check if there's any search query in the page to be extra cautious
+          const searchInputs = document.querySelectorAll('input[type="search"], input[placeholder*="search" i]');
+          const hasActiveSearch = Array.from(searchInputs).some(input => 
+            input instanceof HTMLInputElement && input.value.trim() !== ''
+          );
+
+          // Only focus the card if search input is not active and no active search
+          if (!isSearchInputFocused && !hasActiveSearch) {
+            containerRef.current.focus();
+          }
           
           // Ensure the entire vertical item row is completely visible when it receives focus
           setTimeout(() => {
@@ -428,6 +444,9 @@ const TimelineCardContent: React.FunctionComponent<TimelineContentModel> =
           $textDensity={textDensity}
           $customContent={!!customContent}
           $theme={theme}
+          aria-current={active ? 'step' : undefined}
+          aria-expanded={showMore ? 'true' : 'false'}
+          role="region"
         >
           {/* Only show the content header if we're not using text overlay mode with media */}
           {(!textOverlay || !media) && (
diff --git a/src/components/timeline-elements/timeline-card-media/__tests__/__snapshots__/timeline-card-media.test.tsx.snap b/src/components/timeline-elements/timeline-card-media/__tests__/__snapshots__/timeline-card-media.test.tsx.snap
index 382f89bb0..49f340c4f 100644
--- a/src/components/timeline-elements/timeline-card-media/__tests__/__snapshots__/timeline-card-media.test.tsx.snap
+++ b/src/components/timeline-elements/timeline-card-media/__tests__/__snapshots__/timeline-card-media.test.tsx.snap
@@ -3,16 +3,16 @@
 exports[`Timeline Card media > should match the snapshot ( IMAGE ) 1`] = `
 <div>
   <div
-    class="sc-bXdtCk kPUcYW card-media-wrapper card-media"
+    class="sc-bRKDuR khFSwl card-media-wrapper card-media"
     mode="VERTICAL_ALTERNATING"
   >
     <div
-      class="sc-hKDTPf kVfjuk"
+      class="sc-hvigdm iEEmax"
       height="200"
     >
       <img
         alt="Image"
-        class="sc-fmZSGO epZatZ"
+        class="sc-fhHczv kywTIv"
         data-testid="timeline-card-content-image"
         height="auto"
         loading="lazy"
@@ -23,14 +23,14 @@ exports[`Timeline Card media > should match the snapshot ( IMAGE ) 1`] = `
     </div>
   </div>
   <div
-    class="sc-dYOLZc GbEGl"
+    class="sc-dTvVRJ bXyjTr"
     mode="VERTICAL_ALTERNATING"
   >
     <div
-      class="sc-hBDmJg jTlGOJ"
+      class="sc-hwkwBN bqxVgB"
     />
     <span
-      class="sc-dibcMh hJnNTO card-sub-title card-subtitle"
+      class="sc-dntSTA bSjCIK card-sub-title card-subtitle"
     >
       This is another test
     </span>
@@ -41,13 +41,13 @@ exports[`Timeline Card media > should match the snapshot ( IMAGE ) 1`] = `
 exports[`Timeline Card media > should match the snapshot ( VIDEO ) 1`] = `
 <div>
   <div
-    class="sc-bXdtCk kPUcYW card-media-wrapper card-media"
+    class="sc-bRKDuR khFSwl card-media-wrapper card-media"
     mode="VERTICAL_ALTERNATING"
   >
     <iframe
       allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
       allowfullscreen=""
-      class="sc-hoLldG eQsmdl"
+      class="sc-hjsuWn bxMWPl"
       data-testid="timeline-card-content-video"
       loading="lazy"
       src="https://www.youtube.com/watch?v=9bZkp7q19f0?enablejsapi=1"
@@ -55,14 +55,14 @@ exports[`Timeline Card media > should match the snapshot ( VIDEO ) 1`] = `
     />
   </div>
   <div
-    class="sc-dYOLZc GbEGl"
+    class="sc-dTvVRJ bXyjTr"
     mode="VERTICAL_ALTERNATING"
   >
     <div
-      class="sc-hBDmJg jTlGOJ"
+      class="sc-hwkwBN bqxVgB"
     />
     <span
-      class="sc-dibcMh hJnNTO card-sub-title card-subtitle"
+      class="sc-dntSTA bSjCIK card-sub-title card-subtitle"
     >
       This is another test
     </span>
diff --git a/src/components/timeline-elements/timeline-card-media/video.tsx b/src/components/timeline-elements/timeline-card-media/video.tsx
index 61d772ccc..341b95852 100644
--- a/src/components/timeline-elements/timeline-card-media/video.tsx
+++ b/src/components/timeline-elements/timeline-card-media/video.tsx
@@ -42,7 +42,8 @@ const Video: React.FC<VideoProps> = ({
       onEnded={onEnded}
       playsInline={playsInline}
       preload="metadata"
-      aria-label="Timeline media"
+      aria-label="Timeline video content"
+      title="Timeline video"
       {...rest}
     >
       {children}
diff --git a/src/components/timeline-elements/timeline-card/__tests__/__snapshots__/timeline-horizontal-card.test.tsx.snap b/src/components/timeline-elements/timeline-card/__tests__/__snapshots__/timeline-horizontal-card.test.tsx.snap
index bd4ced5f4..e51e7aae5 100644
--- a/src/components/timeline-elements/timeline-card/__tests__/__snapshots__/timeline-horizontal-card.test.tsx.snap
+++ b/src/components/timeline-elements/timeline-card/__tests__/__snapshots__/timeline-horizontal-card.test.tsx.snap
@@ -3,17 +3,17 @@
 exports[`TimelineHorizontalCard > should match the snapshot 1`] = `
 <div>
   <div
-    class="sc-hKDTPf exBYDa vertical_alternating"
+    class="sc-hvigdm dGwijf vertical_alternating"
     data-testid="timeline-item"
   >
     <div
-      class="sc-gwsNht kPNfyf"
+      class="sc-ggWZvA LXovB"
     >
       <button
         aria-disabled="false"
         aria-label=""
         aria-selected="false"
-        class="sc-dYOLZc hTaAEO timeline-circle using-icon vertical_alternating active"
+        class="sc-dTvVRJ fJGXiE timeline-circle using-icon vertical_alternating active"
         data-testid="timeline-circle"
         dimension="16"
         tabindex="0"
@@ -23,11 +23,11 @@ exports[`TimelineHorizontalCard > should match the snapshot 1`] = `
       </button>
     </div>
     <div
-      class="sc-jMpmlX dVXykw vertical_alternating"
+      class="sc-jwTyAe jjiCuv vertical_alternating"
       data-testid="timeline-title"
     >
       <div
-        class="sc-bXdtCk fqniHI timeline-item-title active title"
+        class="sc-bRKDuR ePJukf timeline-item-title active title"
       />
     </div>
   </div>
diff --git a/src/components/timeline-elements/timeline-control/__tests__/__snapshots__/timeline-control.test.tsx.snap b/src/components/timeline-elements/timeline-control/__tests__/__snapshots__/timeline-control.test.tsx.snap
index 3aab1f17d..b8541013e 100644
--- a/src/components/timeline-elements/timeline-control/__tests__/__snapshots__/timeline-control.test.tsx.snap
+++ b/src/components/timeline-elements/timeline-control/__tests__/__snapshots__/timeline-control.test.tsx.snap
@@ -3,15 +3,16 @@
 exports[`TimelineControl > should render 1`] = `
 <div>
   <div
-    class="sc-jMpmlX ehhCPv"
+    class="sc-jwTyAe irHkHE"
   >
     <output
       aria-live="polite"
-      class="sc-bXdtCk gFwzoa"
+      class="sc-bRKDuR hvZuQl"
     />
     <div
-      aria-label="Timeline Navigation"
-      class="sc-hKDTPf hkrQIj timeline-controls controls"
+      aria-label="Timeline Navigation Controls"
+      aria-orientation="horizontal"
+      class="sc-hvigdm dNLVFW timeline-controls controls"
       role="toolbar"
     >
       <div
@@ -21,7 +22,7 @@ exports[`TimelineControl > should render 1`] = `
           aria-controls="timeline-main-wrapper"
           aria-disabled="false"
           aria-label="first"
-          class="sc-gwsNht gXsauR"
+          class="sc-ggWZvA iBZHQz"
           data-test-id="jump-to-first"
           mode="VERTICAL_ALTERNATING"
           rotate="TRUE"
@@ -56,7 +57,7 @@ exports[`TimelineControl > should render 1`] = `
           aria-controls="timeline-main-wrapper"
           aria-disabled="false"
           aria-label="previous"
-          class="sc-gwsNht gXsauR"
+          class="sc-ggWZvA iBZHQz"
           data-test-id="previous"
           mode="VERTICAL_ALTERNATING"
           rotate="TRUE"
@@ -88,7 +89,7 @@ exports[`TimelineControl > should render 1`] = `
           aria-controls="timeline-main-wrapper"
           aria-disabled="false"
           aria-label="next"
-          class="sc-gwsNht gXsauR"
+          class="sc-ggWZvA iBZHQz"
           data-test-id="next"
           mode="VERTICAL_ALTERNATING"
           rotate="TRUE"
@@ -120,7 +121,7 @@ exports[`TimelineControl > should render 1`] = `
           aria-controls="timeline-main-wrapper"
           aria-disabled="false"
           aria-label="last"
-          class="sc-gwsNht gXsauR"
+          class="sc-ggWZvA iBZHQz"
           data-test-id="jump-to-last"
           mode="VERTICAL_ALTERNATING"
           rotate="TRUE"
@@ -158,7 +159,7 @@ exports[`TimelineControl > should render 1`] = `
           aria-controls="timeline-main-wrapper"
           aria-label="dark"
           aria-pressed="false"
-          class="sc-gwsNht hYksoo"
+          class="sc-ggWZvA ecZfBa"
           data-test-id="dark-toggle"
           tabindex="0"
           title="dark"
diff --git a/src/components/timeline-elements/timeline-control/timeline-control.tsx b/src/components/timeline-elements/timeline-control/timeline-control.tsx
index 9278e28b1..0d1cd77f4 100644
--- a/src/components/timeline-elements/timeline-control/timeline-control.tsx
+++ b/src/components/timeline-elements/timeline-control/timeline-control.tsx
@@ -137,8 +137,9 @@ const Controls: React.FunctionComponent<TimelineControlModel> = ({
       <TimelineNavWrapper
         className={cls('timeline-controls', classNames?.controls)}
         theme={theme}
-        aria-label="Timeline Navigation"
+        aria-label="Timeline Navigation Controls"
         role="toolbar"
+        aria-orientation="horizontal"
       >
         {/* jump to first */}
         {disableInteraction ? null : (
diff --git a/src/components/timeline-elements/timeline-item-title/__tests__/__snapshots__/timeline-card-title.test.tsx.snap b/src/components/timeline-elements/timeline-item-title/__tests__/__snapshots__/timeline-card-title.test.tsx.snap
index df43e1840..a6ca33650 100644
--- a/src/components/timeline-elements/timeline-item-title/__tests__/__snapshots__/timeline-card-title.test.tsx.snap
+++ b/src/components/timeline-elements/timeline-item-title/__tests__/__snapshots__/timeline-card-title.test.tsx.snap
@@ -3,7 +3,7 @@
 exports[`Timeline item title > should match the snapshot 1`] = `
 <div>
   <div
-    class="sc-bXdtCk iDQByJ timeline-item-title"
+    class="sc-bRKDuR dyOnqy timeline-item-title"
   >
     title
   </div>
diff --git a/src/components/timeline-horizontal/__tests__/timeline-horizontal.test.tsx b/src/components/timeline-horizontal/__tests__/timeline-horizontal.test.tsx
index 38d3bc970..040089c2d 100644
--- a/src/components/timeline-horizontal/__tests__/timeline-horizontal.test.tsx
+++ b/src/components/timeline-horizontal/__tests__/timeline-horizontal.test.tsx
@@ -225,9 +225,9 @@ describe('TimelineHorizontal', () => {
 
   it('should render as semantic list with proper ARIA labels', () => {
     renderWithContext();
-    const list = screen.getByRole('list', { name: 'Timeline' });
+    const list = screen.getByRole('list', { name: 'Timeline items' });
     expect(list).toBeInTheDocument();
-    expect(list).toHaveAttribute('aria-label', 'Timeline');
+    expect(list).toHaveAttribute('aria-label', 'Timeline items');
   });
 
   it('should handle empty items array', () => {
diff --git a/src/components/timeline-horizontal/timeline-horizontal.tsx b/src/components/timeline-horizontal/timeline-horizontal.tsx
index a8d5b4dbc..037549e03 100644
--- a/src/components/timeline-horizontal/timeline-horizontal.tsx
+++ b/src/components/timeline-horizontal/timeline-horizontal.tsx
@@ -119,7 +119,8 @@ const TimelineHorizontal: React.FunctionComponent<TimelineHorizontalModel> = ({
       flipLayout={flipLayout}
       data-testid="timeline-collection"
       as="ul"
-      aria-label="Timeline"
+      aria-label="Timeline items"
+      role="list"
     >
       {timelineItems}
     </TimelineHorizontalWrapper>
diff --git a/src/components/timeline-vertical/__tests__/__snapshots__/timeline-point.test.tsx.snap b/src/components/timeline-vertical/__tests__/__snapshots__/timeline-point.test.tsx.snap
index 6baa208db..130acb7aa 100644
--- a/src/components/timeline-vertical/__tests__/__snapshots__/timeline-point.test.tsx.snap
+++ b/src/components/timeline-vertical/__tests__/__snapshots__/timeline-point.test.tsx.snap
@@ -4,20 +4,21 @@ exports[`Timeline point > Should match snapshot 1`] = `
 <DocumentFragment>
   <div
     bg="#007FFF"
-    class="sc-jZhnRx tOVje test_class_name"
+    class="sc-jJLAfE jbSFsd test_class_name"
     data-testid="tree-leaf"
     width="3"
   >
     <button
       aria-disabled="false"
       aria-label="Timeline point"
-      class="sc-hBDmJg bzyKdy test_class_name timeline-vertical-circle"
+      class="sc-hwkwBN ivckPa test_class_name timeline-vertical-circle"
       data-testid="tree-leaf-click"
+      role="button"
       tabindex="0"
     >
       <div
         aria-hidden="true"
-        class="sc-gwsNht driqcB"
+        class="sc-ggWZvA dxGpsX"
         dimension="20"
       />
     </button>
diff --git a/src/components/timeline-vertical/__tests__/__snapshots__/timeline-vertical-item.test.tsx.snap b/src/components/timeline-vertical/__tests__/__snapshots__/timeline-vertical-item.test.tsx.snap
index 4da5a31f4..d99dce7bb 100644
--- a/src/components/timeline-vertical/__tests__/__snapshots__/timeline-vertical-item.test.tsx.snap
+++ b/src/components/timeline-vertical/__tests__/__snapshots__/timeline-vertical-item.test.tsx.snap
@@ -3,47 +3,50 @@
 exports[`Timeline vertical item > Should match snapshot 1`] = `
 <div>
   <li
-    aria-label="vertical item title"
-    class="sc-jSJJpv INxDq vertical-item-row"
+    aria-label="Timeline item: vertical item title"
+    class="sc-jYczwO cFlZWy vertical-item-row"
     data-item-id=""
     data-testid="vertical-item-row"
+    role="listitem"
   >
     <div
-      class="sc-fdduAw iojkLR"
+      class="sc-fszimp criaYi"
       mode="VERTICAL_ALTERNATING"
     >
       <div
         align="right"
-        class="sc-ffSBbn hBRWRr timeline-item-title title"
+        class="sc-eQwNpu vsucr timeline-item-title title"
       >
         vertical item title
       </div>
     </div>
     <div
-      class="sc-edaYAx jnCJRZ card-content-wrapper"
+      class="sc-dNFkOE xVabF card-content-wrapper"
     >
       <article
+        aria-expanded="false"
         aria-label="vertical item title"
-        class="sc-kThouk kiPUbA timeline-card-content  card"
+        class="sc-kNOymR VTmon timeline-card-content  card"
         data-item-id=""
         data-testid="timeline-card-content"
         mode="VERTICAL_ALTERNATING"
+        role="region"
         tabindex="-1"
       >
         <header
-          class="sc-dTdQuR sLIMt"
+          class="sc-dYwGCk jmCnZH"
         />
         <div
-          class="sc-bXdtCk kPUcYW card-media-wrapper card-media"
+          class="sc-bRKDuR khFSwl card-media-wrapper card-media"
           mode="VERTICAL_ALTERNATING"
         >
           <div
-            class="sc-hKDTPf kVfjuk"
+            class="sc-hvigdm iEEmax"
             height="200"
           >
             <img
               alt=""
-              class="sc-fmZSGO epZatZ"
+              class="sc-fhHczv kywTIv"
               data-testid="timeline-card-content-image"
               height="auto"
               loading="lazy"
@@ -57,19 +60,20 @@ exports[`Timeline vertical item > Should match snapshot 1`] = `
     </div>
     <div
       bg="#007FFF"
-      class="sc-epGxBs cdpEGV"
+      class="sc-eknHtZ bdtwCJ"
       data-testid="tree-leaf"
     >
       <button
         aria-disabled="false"
         aria-label="Timeline point"
-        class="sc-kFXyV crwQya  timeline-vertical-circle"
+        class="sc-pYNGo dyMaoC  timeline-vertical-circle"
         data-testid="tree-leaf-click"
+        role="button"
         tabindex="0"
       >
         <div
           aria-hidden="true"
-          class="sc-faJlkc kCbipW"
+          class="sc-eVqvcJ ifMCtn"
           dimension="16"
         />
       </button>
diff --git a/src/components/timeline-vertical/timeline-point.tsx b/src/components/timeline-vertical/timeline-point.tsx
index 4f7e3e268..dba6a2ea1 100644
--- a/src/components/timeline-vertical/timeline-point.tsx
+++ b/src/components/timeline-vertical/timeline-point.tsx
@@ -113,7 +113,7 @@ const TimelinePoint: FunctionComponent<TimelinePointModel> = memo(
         return {};
       }
 
-      // Return props containing the onClick handler
+      // Return props containing the onClick handler and keyboard handler
       return {
         onClick: (ev: MouseEvent) => {
           ev.stopPropagation(); // Prevent event bubbling up
@@ -122,6 +122,16 @@ const TimelinePoint: FunctionComponent<TimelinePointModel> = memo(
             onClick(id);
           }
         },
+        onKeyDown: (ev: React.KeyboardEvent) => {
+          if (ev.key === 'Enter' || ev.key === ' ') {
+            ev.preventDefault();
+            ev.stopPropagation();
+            // Call the provided onClick handler if it exists, passing the item ID
+            if (id && onClick && !slideShowRunning) {
+              onClick(id);
+            }
+          }
+        },
       };
     }, [id, onClick, slideShowRunning, disableClickOnCircle]); // Dependencies for the click logic
 
@@ -166,8 +176,10 @@ const TimelinePoint: FunctionComponent<TimelinePointModel> = memo(
           data-testid="tree-leaf-click" // Test ID for the clickable element
           aria-label={timelinePointLabel} // Accessibility label
           aria-disabled={disableClickOnCircle ?? disableTimelinePoint} // Disable button if needed
+          aria-current={active ? 'step' : undefined} // Indicate current step in timeline
           disabled={disableClickOnCircle || disableTimelinePoint} // Disable button if needed
           tabIndex={disableClickOnCircle || disableTimelinePoint ? -1 : 0} // Manage tab order
+          role="button"
         >
           {/* The visual shape (circle, square, or custom icon) */}
           <Shape
diff --git a/src/components/timeline-vertical/timeline-vertical-item.tsx b/src/components/timeline-vertical/timeline-vertical-item.tsx
index 01320a9a0..642dcb3c9 100644
--- a/src/components/timeline-vertical/timeline-vertical-item.tsx
+++ b/src/components/timeline-vertical/timeline-vertical-item.tsx
@@ -242,8 +242,9 @@ const VerticalItem: FunctionComponent<VerticalItemModel> = (
       key={id}
       ref={contentRef}
       theme={theme}
-      aria-current={active ? 'true' : undefined}
-      aria-label={accessibleTitle}
+      aria-current={active ? 'step' : undefined}
+      aria-label={`Timeline item: ${accessibleTitle}`}
+      role="listitem"
     >
       {/* Conditionally render the Title */}
       {canShowTitle ? Title : null}
diff --git a/src/components/timeline-vertical/timeline-vertical.tsx b/src/components/timeline-vertical/timeline-vertical.tsx
index 3ad2c436b..5b675ef83 100644
--- a/src/components/timeline-vertical/timeline-vertical.tsx
+++ b/src/components/timeline-vertical/timeline-vertical.tsx
@@ -133,7 +133,12 @@ const TimelineVertical: FunctionComponent<TimelineVerticalModel> = memo(
 
     // Render the main timeline wrapper
     return (
-      <TimelineVerticalWrapper as="ul" data-testid="tree-main">
+      <TimelineVerticalWrapper 
+        as="ul" 
+        data-testid="tree-main"
+        role="list"
+        aria-label="Timeline items"
+      >
         {renderItems}
       </TimelineVerticalWrapper>
     );
diff --git a/src/components/timeline/timeline-toolbar.tsx b/src/components/timeline/timeline-toolbar.tsx
index 05839b0eb..e5a984a71 100644
--- a/src/components/timeline/timeline-toolbar.tsx
+++ b/src/components/timeline/timeline-toolbar.tsx
@@ -146,7 +146,18 @@ const TimelineToolbar: FunctionComponent<TimelineToolbarProps> = ({
   }, []);
 
   const handleInputChange = (event: React.ChangeEvent<HTMLInputElement>) => {
-    onSearchChange(event.target.value);
+    const newValue = event.target.value;
+    onSearchChange(newValue);
+    
+    // Ensure input maintains focus during typing
+    setTimeout(() => {
+      if (searchInputRef?.current && event.target === searchInputRef.current) {
+        searchInputRef.current.focus();
+        // Restore cursor position
+        const length = searchInputRef.current.value.length;
+        searchInputRef.current.setSelectionRange(length, length);
+      }
+    }, 0);
   };
 
   // Handle clear search and focus the input
@@ -193,7 +204,14 @@ const TimelineToolbar: FunctionComponent<TimelineToolbarProps> = ({
           const length = searchInputRef.current.value.length;
           searchInputRef.current.setSelectionRange(length, length);
         }
-      }, 50);
+      }, 100); // Increased delay to ensure card focus completes first
+
+      // Schedule another focus return after card receives focus
+      setTimeout(() => {
+        if (searchInputRef?.current && searchQuery) {
+          searchInputRef.current.focus();
+        }
+      }, 400); // Return focus after card interaction completes
     }
   };
 
@@ -250,8 +268,13 @@ const TimelineToolbar: FunctionComponent<TimelineToolbarProps> = ({
           </TimelineNavButton>
         )}
         {totalMatches > 0 && (
-          <SearchInfo theme={theme}>
-            {`${currentMatchIndex + 1} / ${totalMatches}`}
+          <SearchInfo 
+            theme={theme}
+            aria-live="polite"
+            aria-atomic="true"
+            role="status"
+          >
+            {`${currentMatchIndex + 1} of ${totalMatches} results`}
           </SearchInfo>
         )}
         {searchQuery && (
diff --git a/src/components/timeline/timeline.tsx b/src/components/timeline/timeline.tsx
index 9a74df43f..16db2211e 100644
--- a/src/components/timeline/timeline.tsx
+++ b/src/components/timeline/timeline.tsx
@@ -320,6 +320,9 @@ const Timeline: React.FunctionComponent<TimelineModel> = (
         mode={mode}
         position={toolbarPosition}
         onScroll={handleMainScroll}
+        role="main"
+        aria-label="Timeline content"
+        tabIndex={-1}
       >
         <TimelineView
           timelineMode={timelineMode}
diff --git a/src/components/toolbar/index.tsx b/src/components/toolbar/index.tsx
index cb38c5e52..0bc2989f7 100644
--- a/src/components/toolbar/index.tsx
+++ b/src/components/toolbar/index.tsx
@@ -33,7 +33,7 @@ const Toolbar: FunctionComponent<ToolbarProps> = memo(
     }
 
     return (
-      <ToolbarWrapper theme={theme} role="toolbar">
+      <ToolbarWrapper theme={theme} role="toolbar" aria-orientation="horizontal">
         {items.map(({ label, id, icon }, index) => {
           if (!id) {
             console.warn('Toolbar item is missing required id property');
@@ -45,7 +45,13 @@ const Toolbar: FunctionComponent<ToolbarProps> = memo(
               aria-label={label}
               key={id}
               role="button"
-              // tabIndex={0}
+              tabIndex={0}
+              onKeyDown={(ev) => {
+                if (ev.key === 'Enter' || ev.key === ' ') {
+                  ev.preventDefault();
+                  // Handle activation if needed
+                }
+              }}
             >
               {icon && <IconWrapper>{icon}</IconWrapper>}
               {children[index] && (
diff --git a/src/hooks/__tests__/useTimelineSearch.test.ts b/src/hooks/__tests__/useTimelineSearch.test.ts
index a0f56021e..825c2edbf 100644
--- a/src/hooks/__tests__/useTimelineSearch.test.ts
+++ b/src/hooks/__tests__/useTimelineSearch.test.ts
@@ -270,4 +270,62 @@ describe('useTimelineSearch', () => {
     expect(mockOnTimelineUpdated).toHaveBeenCalledWith(1);
     expect(mockHandleTimelineItemClick).toHaveBeenCalledWith('2');
   });
+
+  it('should provide search input ref for focus management', () => {
+    const { result } = renderHook(() =>
+      useTimelineSearch({
+        items: mockItems,
+        onTimelineUpdated: mockOnTimelineUpdated,
+        handleTimelineItemClick: mockHandleTimelineItemClick,
+      }),
+    );
+
+    expect(result.current.searchInputRef).toBeDefined();
+    expect(result.current.searchInputRef.current).toBeNull(); // No DOM in test env
+  });
+
+  it('should focus search input when search is active', () => {
+    // Mock HTMLInputElement and its focus method
+    const mockFocus = vi.fn();
+    const mockSetSelectionRange = vi.fn();
+    const mockAddEventListener = vi.fn();
+    const mockRemoveEventListener = vi.fn();
+    const mockInputElement = {
+      focus: mockFocus,
+      setSelectionRange: mockSetSelectionRange,
+      addEventListener: mockAddEventListener,
+      removeEventListener: mockRemoveEventListener,
+      value: 'test query',
+    } as unknown as HTMLInputElement;
+
+    const { result } = renderHook(() =>
+      useTimelineSearch({
+        items: mockItems,
+        onTimelineUpdated: mockOnTimelineUpdated,
+        handleTimelineItemClick: mockHandleTimelineItemClick,
+      }),
+    );
+
+    // Set the mock input element
+    result.current.searchInputRef.current = mockInputElement;
+
+    // Perform a search
+    act(() => {
+      result.current.handleSearchChange('Title');
+    });
+
+    // Wait for debounce and focus scheduling
+    act(() => {
+      vi.advanceTimersByTime(500);
+    });
+
+    // Advance timers for scheduled focus return
+    act(() => {
+      vi.advanceTimersByTime(300);
+    });
+
+    // The focus should be called multiple times due to our focus management
+    expect(mockFocus).toHaveBeenCalled();
+    expect(mockAddEventListener).toHaveBeenCalled();
+  });
 });
diff --git a/src/hooks/useFocusTrap.ts b/src/hooks/useFocusTrap.ts
new file mode 100644
index 000000000..a2dd86d86
--- /dev/null
+++ b/src/hooks/useFocusTrap.ts
@@ -0,0 +1,99 @@
+import { useEffect, useRef, useCallback } from 'react';
+
+/**
+ * Custom hook for managing focus within a modal or popover
+ * Provides focus trapping and escape key handling
+ */
+export const useFocusTrap = (
+  isOpen: boolean,
+  onClose: () => void
+) => {
+  const containerRef = useRef<HTMLDivElement>(null);
+  const previousActiveElement = useRef<HTMLElement | null>(null);
+
+  // Get all focusable elements within the container
+  const getFocusableElements = useCallback(() => {
+    if (!containerRef.current) return [];
+    
+    const focusableSelectors = [
+      'button:not([disabled])',
+      'input:not([disabled])',
+      'select:not([disabled])',
+      'textarea:not([disabled])',
+      'a[href]',
+      '[tabindex]:not([tabindex="-1"])',
+      '[contenteditable="true"]'
+    ].join(', ');
+    
+    return Array.from(
+      containerRef.current.querySelectorAll(focusableSelectors)
+    ) as HTMLElement[];
+  }, []);
+
+  // Handle keyboard navigation
+  const handleKeyDown = useCallback((event: KeyboardEvent) => {
+    if (!isOpen) return;
+
+    if (event.key === 'Escape') {
+      event.preventDefault();
+      onClose();
+      return;
+    }
+
+    if (event.key === 'Tab') {
+      const focusableElements = getFocusableElements();
+      if (focusableElements.length === 0) return;
+
+      const firstElement = focusableElements[0];
+      const lastElement = focusableElements[focusableElements.length - 1];
+
+      if (event.shiftKey) {
+        // Shift + Tab: moving backwards
+        if (document.activeElement === firstElement) {
+          event.preventDefault();
+          lastElement.focus();
+        }
+      } else {
+        // Tab: moving forwards
+        if (document.activeElement === lastElement) {
+          event.preventDefault();
+          firstElement.focus();
+        }
+      }
+    }
+  }, [isOpen, onClose, getFocusableElements]);
+
+  // Set up focus trap when open
+  useEffect(() => {
+    if (isOpen) {
+      // Store the previously focused element
+      previousActiveElement.current = document.activeElement as HTMLElement;
+      
+      // Focus the first focusable element in the container
+      const focusableElements = getFocusableElements();
+      if (focusableElements.length > 0) {
+        focusableElements[0].focus();
+      } else if (containerRef.current) {
+        containerRef.current.focus();
+      }
+
+      // Add event listener for keyboard navigation
+      document.addEventListener('keydown', handleKeyDown);
+    } else {
+      // Remove event listener
+      document.removeEventListener('keydown', handleKeyDown);
+      
+      // Restore focus to the previously focused element
+      if (previousActiveElement.current) {
+        previousActiveElement.current.focus();
+        previousActiveElement.current = null;
+      }
+    }
+
+    return () => {
+      document.removeEventListener('keydown', handleKeyDown);
+    };
+  }, [isOpen, handleKeyDown, getFocusableElements]);
+
+  return containerRef;
+};
diff --git a/src/hooks/useTimelineSearch.ts b/src/hooks/useTimelineSearch.ts
index 716b65901..07738727e 100644
--- a/src/hooks/useTimelineSearch.ts
+++ b/src/hooks/useTimelineSearch.ts
@@ -1,4 +1,4 @@
-import { useCallback, useState, useRef, useMemo } from 'react';
+import { useCallback, useState, useRef, useMemo, useEffect } from 'react';
 import { TimelineCardModel } from '@models/TimelineItemModel';
 import { getSearchableText } from '../utils/timelineUtils';
 import { useDebouncedCallback } from 'use-debounce';
@@ -59,6 +59,134 @@ export const useTimelineSearch = ({
     });
   }, []);
 
+  // Return focus to search input after a delay when cards receive focus
+  const scheduleFocusReturn = useCallback(() => {
+    setTimeout(() => {
+      if (searchInputRef.current && searchQuery) {
+        focusSearchInput();
+      }
+    }, 300); // Wait for card focus to complete, then return to search
+  }, [focusSearchInput, searchQuery]);
+
+  // Track if user is actively typing to prevent focus interruption
+  const isTypingRef = useRef(false);
+  const typingTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+
+  // Enhanced search input focus with initial focus setup
+  useEffect(() => {
+    // Ensure search input has initial focus when component mounts
+    if (searchInputRef.current) {
+      searchInputRef.current.focus();
+    }
+  }, []);
+
+  // Global focus protection - prevent any other element from stealing focus during search
+  useEffect(() => {
+    if (searchQuery && searchInputRef.current) {
+      let focusCheckInterval: NodeJS.Timeout;
+      
+      const protectSearchFocus = () => {
+        if (searchInputRef.current && 
+            document.activeElement !== searchInputRef.current && 
+            searchQuery && 
+            !isTypingRef.current) {
+          // Check if focus moved to a timeline element
+          const activeEl = document.activeElement as HTMLElement;
+          if (activeEl && (
+              activeEl.closest('.timeline-card-content') ||
+              activeEl.closest('[data-testid="timeline-circle"]') ||
+              activeEl.closest('.timeline-wrapper') ||
+              activeEl.closest('.timeline-vertical') ||
+              activeEl.closest('.timeline-horizontal')
+            )) {
+            // Focus was stolen by timeline element, restore it
+            setTimeout(() => {
+              if (searchInputRef.current && searchQuery) {
+                searchInputRef.current.focus();
+              }
+            }, 10);
+          }
+        }
+      };
+
+      // Check focus every 100ms when search is active
+      focusCheckInterval = setInterval(protectSearchFocus, 100);
+
+      return () => {
+        if (focusCheckInterval) {
+          clearInterval(focusCheckInterval);
+        }
+      };
+    }
+  }, [searchQuery]);
+
+  // Keep search input focused when typing - prevent focus loss during search
+  useEffect(() => {
+    if (searchQuery && searchInputRef.current) {
+      const inputElement = searchInputRef.current;
+      
+      // Only add event listeners if the element has the addEventListener method
+      if (typeof inputElement.addEventListener === 'function') {
+        // Track typing state to prevent focus stealing
+        const handleInput = () => {
+          isTypingRef.current = true;
+          if (typingTimeoutRef.current) {
+            clearTimeout(typingTimeoutRef.current);
+          }
+          typingTimeoutRef.current = setTimeout(() => {
+            isTypingRef.current = false;
+          }, 500); // User is considered "typing" for 500ms after last input
+        };
+
+        // Prevent focus loss during typing
+        const handleBlur = (event: FocusEvent) => {
+          if (isTypingRef.current || searchQuery) {
+            // If user is typing or there's a search query, immediately refocus
+            setTimeout(() => {
+              if (searchInputRef.current && (isTypingRef.current || searchQuery)) {
+                searchInputRef.current.focus();
+              }
+            }, 0);
+          }
+        };
+
+        // More aggressive focus retention
+        const handleFocusOut = (event: FocusEvent) => {
+          // Check if focus is moving to timeline elements
+          const relatedTarget = event.relatedTarget as HTMLElement;
+          if (relatedTarget && 
+              (relatedTarget.closest('.timeline-card-content') ||
+               relatedTarget.closest('[data-testid="timeline-circle"]') ||
+               relatedTarget.closest('.timeline-nav-wrapper')) &&
+              searchQuery) {
+            // Focus is moving to timeline elements during search, prevent it
+            event.preventDefault();
+            setTimeout(() => {
+              if (searchInputRef.current) {
+                searchInputRef.current.focus();
+              }
+            }, 0);
+          }
+        };
+
+        inputElement.addEventListener('input', handleInput);
+        inputElement.addEventListener('blur', handleBlur);
+        inputElement.addEventListener('focusout', handleFocusOut);
+
+        return () => {
+          if (typeof inputElement.removeEventListener === 'function') {
+            inputElement.removeEventListener('input', handleInput);
+            inputElement.removeEventListener('blur', handleBlur);
+            inputElement.removeEventListener('focusout', handleFocusOut);
+          }
+          if (typingTimeoutRef.current) {
+            clearTimeout(typingTimeoutRef.current);
+          }
+        };
+      }
+    }
+  }, [searchQuery]);
+
   // Enhanced search with better performance
   const findMatches = useCallback(
     (query: string) => {
@@ -89,13 +217,14 @@ export const useTimelineSearch = ({
           onTimelineUpdatedRef.current?.(results[0]);
           handleTimelineItemClickRef.current(firstMatchData.id);
           focusSearchInput();
+          scheduleFocusReturn(); // Schedule focus return after card receives focus
         }
       } else {
         setCurrentMatchIndex(-1);
         focusSearchInput();
       }
     },
-    [searchableContent, focusSearchInput],
+    [searchableContent, focusSearchInput, scheduleFocusReturn],
   );
 
   // Optimized debounced search with better performance
@@ -108,6 +237,23 @@ export const useTimelineSearch = ({
   const handleSearchChange = useCallback(
     (query: string) => {
       setSearchQuery(query);
+      
+      // Mark user as actively typing
+      isTypingRef.current = true;
+      if (typingTimeoutRef.current) {
+        clearTimeout(typingTimeoutRef.current);
+      }
+      typingTimeoutRef.current = setTimeout(() => {
+        isTypingRef.current = false;
+      }, 500);
+
+      // Ensure input stays focused during typing
+      setTimeout(() => {
+        if (searchInputRef.current && query) {
+          searchInputRef.current.focus();
+        }
+      }, 0);
+
       debouncedSearch(query);
     },
     [debouncedSearch],
@@ -153,9 +299,10 @@ export const useTimelineSearch = ({
       if (matchData?.id) {
         handleTimelineItemClickRef.current(matchData.id);
         focusSearchInput();
+        scheduleFocusReturn(); // Schedule focus return after card receives focus
       }
     },
-    [searchResults, currentMatchIndex, searchableContent, focusSearchInput],
+    [searchResults, currentMatchIndex, searchableContent, focusSearchInput, scheduleFocusReturn],
   );
 
   const handleNextMatch = useCallback(
diff --git a/src/utils/accessibility-test-utils.ts b/src/utils/accessibility-test-utils.ts
new file mode 100644
index 000000000..c8c7f4bba
--- /dev/null
+++ b/src/utils/accessibility-test-utils.ts
@@ -0,0 +1,157 @@
+/**
+ * Accessibility testing utilities for React Chrono
+ * Provides common accessibility test patterns and assertions
+ */
+
+import { screen } from '@testing-library/react';
+import { expect } from 'vitest';
+
+/**
+ * Tests basic accessibility requirements for a timeline component
+ */
+export const testTimelineAccessibility = () => {
+  // Test that timeline is properly labeled
+  const timelineList = screen.getByRole('list', { name: /timeline items/i });
+  expect(timelineList).toBeInTheDocument();
+  expect(timelineList).toHaveAttribute('aria-label');
+  
+  // Test that timeline items are properly structured
+  const timelineItems = screen.getAllByRole('listitem');
+  expect(timelineItems.length).toBeGreaterThan(0);
+  
+  // Test navigation controls if present
+  const toolbar = screen.queryByRole('toolbar');
+  if (toolbar) {
+    expect(toolbar).toHaveAttribute('aria-label');
+    expect(toolbar).toHaveAttribute('aria-orientation', 'horizontal');
+  }
+};
+
+/**
+ * Tests accessibility for interactive timeline elements
+ */
+export const testTimelineInteractivity = () => {
+  // Test timeline points/buttons
+  const timelineButtons = screen.getAllByRole('button');
+  timelineButtons.forEach(button => {
+    expect(button).toHaveAttribute('aria-label');
+    expect(button).toHaveAttribute('tabindex');
+  });
+};
+
+/**
+ * Tests keyboard navigation patterns
+ */
+export const testKeyboardNavigation = (element: HTMLElement) => {
+  // Should have proper tabindex management
+  expect(element).toHaveAttribute('tabindex');
+  
+  // Should be focusable
+  element.focus();
+  expect(element).toHaveFocus();
+};
+
+/**
+ * Tests ARIA attributes for expanded/collapsed states
+ */
+export const testExpandableContent = (trigger: HTMLElement) => {
+  expect(trigger).toHaveAttribute('aria-expanded');
+  
+  // If it controls other content, should have aria-controls
+  const controls = trigger.getAttribute('aria-controls');
+  if (controls) {
+    const controlledElement = document.getElementById(controls);
+    expect(controlledElement).toBeInTheDocument();
+  }
+};
+
+/**
+ * Tests screen reader announcements
+ */
+export const testScreenReaderContent = () => {
+  // Test for aria-live regions
+  const liveRegions = screen.getAllByRole('status');
+  liveRegions.forEach(region => {
+    expect(region).toHaveAttribute('aria-live');
+  });
+};
+
+/**
+ * Comprehensive accessibility test suite for timeline components
+ * This returns a function that can be called within a test describe block
+ */
+export const createAccessibilityTests = () => {
+  return {
+    testSemanticStructure: () => {
+      testTimelineAccessibility();
+    },
+
+    testKeyboardSupport: () => {
+      const interactiveElements = screen.getAllByRole('button');
+      interactiveElements.forEach(element => {
+        testKeyboardNavigation(element);
+      });
+    },
+
+    testAriaAttributes: () => {
+      testTimelineInteractivity();
+    },
+
+    testScreenReaderSupport: () => {
+      testScreenReaderContent();
+    },
+  };
+};
+
+/**
+ * Checks if an element meets WCAG color contrast requirements
+ * This is a simplified check - in real scenarios you'd use a proper tool
+ */
+export const checkColorContrast = (element: HTMLElement) => {
+  const styles = window.getComputedStyle(element);
+  const backgroundColor = styles.backgroundColor;
+  const color = styles.color;
+  
+  // Basic check that colors are defined
+  expect(backgroundColor).toBeTruthy();
+  expect(color).toBeTruthy();
+  
+  // In a real implementation, you would calculate the actual contrast ratio
+  // and ensure it meets WCAG AA standards (4.5:1 for normal text)
+};
+
+/**
+ * Tests that images have proper alt text
+ */
+export const testImageAccessibility = () => {
+  const images = screen.getAllByRole('img');
+  images.forEach(img => {
+    expect(img).toHaveAttribute('alt');
+  });
+};
+
+/**
+ * Tests that videos have proper accessibility attributes
+ */
+export const testVideoAccessibility = () => {
+  const videos = document.querySelectorAll('video');
+  videos.forEach(video => {
+    expect(video).toHaveAttribute('aria-label');
+    // Should have controls for accessibility
+    if (!video.hasAttribute('autoplay')) {
+      expect(video).toHaveAttribute('controls');
+    }
+  });
+};
+
+export default {
+  testTimelineAccessibility,
+  testTimelineInteractivity,
+  testKeyboardNavigation,
+  testExpandableContent,
+  testScreenReaderContent,
+  createAccessibilityTests,
+  checkColorContrast,
+  testImageAccessibility,
+  testVideoAccessibility,
+};
diff --git a/src/utils/accessibility.ts b/src/utils/accessibility.ts
new file mode 100644
index 000000000..b7bc1bc1d
--- /dev/null
+++ b/src/utils/accessibility.ts
@@ -0,0 +1,200 @@
+/**
+ * Accessibility utilities for React Chrono
+ * Provides helper functions for common accessibility patterns
+ */
+
+/**
+ * Generates unique IDs for accessibility attributes
+ * @param prefix - The prefix for the ID
+ * @param suffix - Optional suffix for the ID
+ * @returns A unique ID string
+ */
+export const generateAccessibilityId = (prefix: string, suffix?: string): string => {
+  const timestamp = Date.now();
+  const random = Math.random().toString(36).substr(2, 9);
+  return `${prefix}-${timestamp}-${random}${suffix ? `-${suffix}` : ''}`;
+};
+
+/**
+ * Creates an accessible announcement for screen readers
+ * @param message - The message to announce
+ * @param priority - The priority level ('polite' | 'assertive')
+ * @returns A function that creates and removes the announcement element
+ */
+export const announceToScreenReader = (
+  message: string, 
+  priority: 'polite' | 'assertive' = 'polite'
+): void => {
+  const announcement = document.createElement('div');
+  announcement.setAttribute('aria-live', priority);
+  announcement.setAttribute('aria-atomic', 'true');
+  announcement.setAttribute('role', 'status');
+  announcement.style.position = 'absolute';
+  announcement.style.left = '-10000px';
+  announcement.style.width = '1px';
+  announcement.style.height = '1px';
+  announcement.style.overflow = 'hidden';
+  
+  announcement.textContent = message;
+  document.body.appendChild(announcement);
+  
+  // Remove after announcement
+  setTimeout(() => {
+    if (document.body.contains(announcement)) {
+      document.body.removeChild(announcement);
+    }
+  }, 1000);
+};
+
+/**
+ * Standard keyboard event handler for buttons and interactive elements
+ * @param event - The keyboard event
+ * @param callback - The function to call when Enter or Space is pressed
+ */
+export const handleKeyboardActivation = (
+  event: React.KeyboardEvent,
+  callback: () => void
+): void => {
+  if (event.key === 'Enter' || event.key === ' ') {
+    event.preventDefault();
+    callback();
+  }
+};
+
+/**
+ * Standard keyboard event handler for Escape key
+ * @param event - The keyboard event
+ * @param callback - The function to call when Escape is pressed
+ */
+export const handleEscapeKey = (
+  event: React.KeyboardEvent,
+  callback: () => void
+): void => {
+  if (event.key === 'Escape') {
+    event.preventDefault();
+    callback();
+  }
+};
+
+/**
+ * Gets accessible text from a ReactNode
+ * @param content - The ReactNode to extract text from
+ * @returns A string representation of the content
+ */
+export const getAccessibleText = (content: React.ReactNode): string => {
+  if (content === null || content === undefined) {
+    return '';
+  }
+  if (typeof content === 'string') {
+    return content;
+  }
+  if (typeof content === 'number' || typeof content === 'boolean') {
+    return String(content);
+  }
+  // For complex React nodes, we'll just return empty string
+  // In a real implementation, you might want to traverse the tree
+  return '';
+};
+
+/**
+ * Focus management utility for timeline navigation
+ * @param element - The element to focus
+ * @param options - Focus options
+ */
+export const manageFocus = (
+  element: HTMLElement | null, 
+  options: {
+    preventScroll?: boolean;
+    announceChange?: boolean;
+    announcement?: string;
+  } = {}
+): void => {
+  if (!element) return;
+  
+  const { preventScroll = false, announceChange = false, announcement } = options;
+  
+  element.focus({ preventScroll });
+  
+  if (announceChange && announcement) {
+    announceToScreenReader(announcement);
+  }
+};
+
+/**
+ * Reduces motion check for accessibility
+ * @returns true if user prefers reduced motion
+ */
+export const prefersReducedMotion = (): boolean => {
+  return window.matchMedia('(prefers-reduced-motion: reduce)').matches;
+};
+
+/**
+ * High contrast mode detection
+ * @returns true if high contrast mode is enabled
+ */
+export const isHighContrastMode = (): boolean => {
+  return window.matchMedia('(prefers-contrast: high)').matches;
+};
+
+/**
+ * Creates accessible navigation announcements
+ * @param current - Current item number (1-based)
+ * @param total - Total number of items
+ * @param itemType - Type of items (e.g., "timeline item", "search result")
+ * @returns Formatted announcement string
+ */
+export const createNavigationAnnouncement = (
+  current: number,
+  total: number,
+  itemType: string = 'item'
+): string => {
+  return `${itemType} ${current} of ${total}`;
+};
+
+/**
+ * ARIA attributes for timeline components
+ */
+export const ARIA_ATTRIBUTES = {
+  TIMELINE_MAIN: {
+    role: 'main',
+    'aria-label': 'Timeline content',
+  },
+  TIMELINE_LIST: {
+    role: 'list',
+    'aria-label': 'Timeline items',
+  },
+  TIMELINE_ITEM: {
+    role: 'listitem',
+  },
+  TIMELINE_POINT: {
+    role: 'button',
+  },
+  TIMELINE_CARD: {
+    role: 'region',
+  },
+  NAVIGATION_TOOLBAR: {
+    role: 'toolbar',
+    'aria-orientation': 'horizontal',
+    'aria-label': 'Timeline navigation controls',
+  },
+  POPOVER_TRIGGER: {
+    role: 'button',
+    'aria-haspopup': 'menu',
+  },
+  POPOVER_CONTENT: {
+    role: 'menu',
+  },
+} as const;
+
+export default {
+  generateAccessibilityId,
+  announceToScreenReader,
+  handleKeyboardActivation,
+  handleEscapeKey,
+  getAccessibleText,
+  manageFocus,
+  prefersReducedMotion,
+  isHighContrastMode,
+  createNavigationAnnouncement,
+  ARIA_ATTRIBUTES,
+};
diff --git a/src/utils/index.ts b/src/utils/index.ts
index ee312a757..0db89c9cf 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -5,6 +5,7 @@ import {
 } from '@models/TimelineModel';
 import xss from 'xss';
 import { darkTheme, defaultTheme } from '../components/common/themes';
+import accessibilityUtils from './accessibility';
 
 // Constants to avoid creating new objects on every function call
 const DEFAULT_CLASS_NAMES = Object.freeze({
@@ -208,3 +209,5 @@ export const getUniqueID = (): string => {
 
   return `id-${timestamp}-${randomPart}`;
 };
+
+export { accessibilityUtils };