diff --git a/src/App.css b/src/App.css
index 0cd4b4c..70523da 100644
--- a/src/App.css
+++ b/src/App.css
@@ -84,6 +84,17 @@ html[dir="rtl"] {
   background: var(--text-secondary);
 }
 
+.error-container button:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 2px;
+}
+
+.error-message {
+  max-width: 400px;
+  text-align: center;
+  color: var(--text-muted);
+}
+
 /* Empty State */
 .empty-state {
   display: flex;
@@ -216,7 +227,8 @@ html[dir="rtl"] {
 }
 
 .data-source-select:focus {
-  outline: none;
+  outline: 2px solid var(--accent);
+  outline-offset: 1px;
   background-color: rgba(59, 130, 246, 0.12);
 }
 
@@ -673,7 +685,8 @@ table tbody tr:hover {
 
 .control-group select:focus,
 .control-group input[type="date"]:focus {
-  outline: none;
+  outline: 2px solid var(--accent);
+  outline-offset: -1px;
   border-color: var(--accent);
 }
 
@@ -1679,7 +1692,8 @@ table tbody tr:hover {
 
 .editor-section input:focus,
 .editor-section select:focus {
-  outline: none;
+  outline: 2px solid var(--accent);
+  outline-offset: -1px;
   border-color: var(--accent);
 }
 
@@ -1988,6 +2002,21 @@ html[dir="rtl"] .chart-export-btn.visible {
   text-align: left !important;
 }
 
+/* ========================================
+   Reduced Motion
+   ======================================== */
+
+@media (prefers-reduced-motion: reduce) {
+  *, *::before, *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+  .carousel-track {
+    transition: none;
+  }
+}
+
 /* ========================================
    Loading Skeleton
    ======================================== */
diff --git a/src/App.tsx b/src/App.tsx
index 86f8288..94017e6 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -95,7 +95,7 @@ function App() {
     return (
       <div className="error-container" dir={dir}>
         <h2>{t('app.error')}</h2>
-        <p style={{maxWidth: '400px', textAlign: 'center', color: '#64748b'}}>
+        <p className="error-message">
           {t(`errors.${error.type}`)}
         </p>
         <button onClick={() => loadData()}>{t('app.retry')}</button>
@@ -106,10 +106,10 @@ function App() {
   return (
     <Router>
       <div className="app" dir={dir}>
-        <nav className="nav-bar">
+        <nav className="nav-bar" aria-label={t('nav.dashboard')}>
           <div className="nav-content">
             <div className="nav-brand">
-              <svg className="nav-brand-icon" width="20" height="20" viewBox="0 0 24 24" fill="currentColor">
+              <svg className="nav-brand-icon" width="20" height="20" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
                 <rect x="3" y="3" width="7" height="7" rx="1"/>
                 <rect x="14" y="3" width="7" height="4" rx="1"/>
                 <rect x="3" y="14" width="7" height="7" rx="1"/>
@@ -117,10 +117,11 @@ function App() {
               </svg>
               <span className="nav-brand-text">
                 HiHala Data
-                <select 
+                <select
                   className="data-source-select"
                   value={dataSource}
                   onChange={e => setDataSource(e.target.value)}
+                  aria-label={t('dataSources.museums')}
                 >
                   {dataSources.map(src => (
                     <option key={src.id} value={src.id} disabled={!src.enabled}>
@@ -132,7 +133,7 @@ function App() {
             </div>
             <div className="nav-links">
               <NavLink to="/">
-                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
                   <rect x="3" y="3" width="7" height="9" rx="1"/>
                   <rect x="14" y="3" width="7" height="5" rx="1"/>
                   <rect x="14" y="12" width="7" height="9" rx="1"/>
@@ -141,7 +142,7 @@ function App() {
                 {t('nav.dashboard')}
               </NavLink>
               <NavLink to="/comparison">
-                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
                   <line x1="18" y1="20" x2="18" y2="10"/>
                   <line x1="12" y1="20" x2="12" y2="4"/>
                   <line x1="6" y1="20" x2="6" y2="14"/>
@@ -164,24 +165,26 @@ function App() {
                   {t('app.offline') || 'Offline'}
                 </span>
               )}
-              <button 
+              <button
                 className={`nav-refresh-btn ${refreshing ? 'refreshing' : ''}`}
                 onClick={handleRefresh}
                 disabled={refreshing}
+                aria-label={t('app.refresh') || 'Refresh data'}
                 title={t('app.refresh') || 'Refresh data'}
               >
-                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
                   <polyline points="23 4 23 10 17 10"/>
                   <polyline points="1 20 1 14 7 14"/>
                   <path d="M3.51 9a9 9 0 0 1 14.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0 0 20.49 15"/>
                 </svg>
               </button>
-              <button 
+              <button
                 className="nav-lang-toggle"
                 onClick={switchLanguage}
+                aria-label={t('language.switch')}
                 title="Switch language"
               >
-                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
                   <circle cx="12" cy="12" r="10"/>
                   <line x1="2" y1="12" x2="22" y2="12"/>
                   <path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/>
@@ -192,18 +195,20 @@ function App() {
           </div>
         </nav>
         
-        <Suspense fallback={<LoadingSkeleton />}>
-          <Routes>
-            <Route path="/" element={<Dashboard data={data} showDataLabels={showDataLabels} setShowDataLabels={setShowDataLabels} includeVAT={includeVAT} setIncludeVAT={setIncludeVAT} />} />
-            <Route path="/comparison" element={<Comparison data={data} showDataLabels={showDataLabels} setShowDataLabels={setShowDataLabels} includeVAT={includeVAT} setIncludeVAT={setIncludeVAT} />} />
-            <Route path="/slides" element={<Slides data={data} />} />
-          </Routes>
-        </Suspense>
+        <main>
+          <Suspense fallback={<LoadingSkeleton />}>
+            <Routes>
+              <Route path="/" element={<Dashboard data={data} showDataLabels={showDataLabels} setShowDataLabels={setShowDataLabels} includeVAT={includeVAT} setIncludeVAT={setIncludeVAT} />} />
+              <Route path="/comparison" element={<Comparison data={data} showDataLabels={showDataLabels} setShowDataLabels={setShowDataLabels} includeVAT={includeVAT} setIncludeVAT={setIncludeVAT} />} />
+              <Route path="/slides" element={<Slides data={data} />} />
+            </Routes>
+          </Suspense>
+        </main>
         
         {/* Mobile Bottom Navigation */}
-        <nav className="mobile-nav">
+        <nav className="mobile-nav" aria-label="Mobile navigation">
           <NavLink to="/" className="mobile-nav-item">
-            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
               <rect x="3" y="3" width="7" height="9" rx="1"/>
               <rect x="14" y="3" width="7" height="5" rx="1"/>
               <rect x="14" y="12" width="7" height="9" rx="1"/>
@@ -212,18 +217,19 @@ function App() {
             <span>{t('nav.dashboard')}</span>
           </NavLink>
           <NavLink to="/comparison" className="mobile-nav-item">
-            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
               <line x1="18" y1="20" x2="18" y2="10"/>
               <line x1="12" y1="20" x2="12" y2="4"/>
               <line x1="6" y1="20" x2="6" y2="14"/>
             </svg>
             <span>{t('nav.compare')}</span>
           </NavLink>
-          <button 
+          <button
             className="mobile-nav-item"
             onClick={switchLanguage}
+            aria-label={t('language.switch')}
           >
-            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
               <circle cx="12" cy="12" r="10"/>
               <line x1="2" y1="12" x2="22" y2="12"/>
               <path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/>