PolicyEngine · PavelMakarchuk · Mar 23, 2026 · Mar 23, 2026
diff --git a/src/App.jsx b/src/App.jsx
@@ -107,7 +107,7 @@ function App() {
   const isStatePage = selectedState && !isBillPage;
 
   return (
-    <div style={{ minHeight: "100vh" }}>
+    <div className="app-shell" style={{ minHeight: "100vh" }}>
       {/* Header */}
       <header
         className="header-accent"
@@ -119,9 +119,9 @@ function App() {
           zIndex: 50,
         }}
       >
-        <div style={{ maxWidth: "1400px", margin: "0 auto", padding: `${spacing.xl} ${spacing["2xl"]}` }}>
-          <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between" }}>
-            <div style={{ display: "flex", alignItems: "center", gap: spacing.lg }}>
+        <div className="app-header-inner" style={{ maxWidth: "1400px", margin: "0 auto", padding: `${spacing.xl} ${spacing["2xl"]}` }}>
+          <div className="app-header-row" style={{ display: "flex", alignItems: "center", justifyContent: "space-between" }}>
+            <div className="app-header-brand" style={{ display: "flex", alignItems: "center", gap: spacing.lg }}>
               <a href="https://policyengine.org" target="_blank" rel="noopener noreferrer">
                 <img
                   src="/policyengine-favicon.svg"
@@ -156,7 +156,7 @@ function App() {
       </header>
 
       {/* Main Content */}
-      <main style={{ maxWidth: "1400px", margin: "0 auto", padding: `${spacing["2xl"]} ${spacing["2xl"]} ${spacing["4xl"]}` }}>
+      <main className="app-main" style={{ maxWidth: "1400px", margin: "0 auto", padding: `${spacing["2xl"]} ${spacing["2xl"]} ${spacing["4xl"]}` }}>
 
         {/* === Bill Page === */}
         {isBillPage && (
@@ -170,7 +170,6 @@ function App() {
             <ReformAnalyzer
               reformConfig={activeBill.reformConfig}
               stateAbbr={selectedState}
-              billUrl={activeBill.url}
               bill={activeBill}
             />
           </div>
@@ -185,7 +184,6 @@ function App() {
             />
             <StatePanel
               stateAbbr={selectedState}
-              onNavigateHome={handleNavigateHome}
               onBillSelect={(id) => handleBillSelect(selectedState, id)}
             />
           </div>
@@ -218,19 +216,16 @@ function App() {
               </p>
             </div>
 
-            {/* Two-column layout: Map + sidebar */}
-            <div style={{
+            <div className="app-home-grid" style={{
               display: "grid",
               gridTemplateColumns: "minmax(0, 1fr) 340px",
               gap: spacing.lg,
               alignItems: "start",
               marginBottom: spacing["2xl"],
             }}>
-              {/* Left column: Map + chips + quick links */}
               <div style={{ display: "flex", flexDirection: "column", gap: spacing.lg }}>
-                {/* Map */}
                 <div
-                  className="animate-fade-in-up"
+                  className="app-map-card animate-fade-in-up"
                   style={{
                     backgroundColor: colors.white,
                     borderRadius: spacing.radius["2xl"],
@@ -240,15 +235,14 @@ function App() {
                     transition: "box-shadow 0.3s ease",
                   }}
                 >
-                  <div style={{ display: "flex", alignItems: "flex-start" }}>
+                  <div className="app-map-layout" style={{ display: "flex", alignItems: "flex-start" }}>
                     <div style={{ flex: 1 }}>
                       <USMap
                         selectedState={selectedState}
                         onStateSelect={handleStateSelect}
                       />
                     </div>
-                    {/* Legend */}
-                    <div style={{
+                    <div className="app-map-legend" style={{
                       display: "flex",
                       flexDirection: "column",
                       gap: spacing.sm,
@@ -265,7 +259,6 @@ function App() {
                     </div>
                   </div>
 
-                  {/* State chips by region */}
                   {activeStates.length > 0 && (
                     <div style={{
                       marginTop: spacing.lg,
@@ -289,8 +282,11 @@ function App() {
                   )}
                 </div>
 
-                {/* Quick Links */}
-                <div style={{
+                <div className="animate-fade-in-up app-recent-activity-mobile">
+                  <RecentActivitySidebar onStateSelect={handleStateSelect} onBillSelect={handleBillSelect} />
+                </div>
+
+                <div className="app-quick-links" style={{
                   display: "grid",
                   gridTemplateColumns: "repeat(3, 1fr)",
                   gap: spacing.md,
@@ -313,8 +309,7 @@ function App() {
                 </div>
               </div>
 
-              {/* Right column: Recent Activity */}
-              <div className="animate-fade-in-up" style={{ position: "sticky", top: "80px" }}>
+              <div className="animate-fade-in-up app-sidebar-sticky app-recent-activity-desktop" style={{ position: "sticky", top: "80px" }}>
                 <RecentActivitySidebar onStateSelect={handleStateSelect} onBillSelect={handleBillSelect} />
               </div>
             </div>
@@ -338,7 +333,7 @@ function App() {
           height: "3px",
           background: "linear-gradient(90deg, #2C7A7B 0%, #38B2AC 50%, #0EA5E9 100%)",
         }} />
-        <div style={{
+        <div className="app-footer-inner" style={{
           maxWidth: "1400px",
           margin: "0 auto",
           padding: `${spacing["2xl"]} ${spacing["2xl"]}`,
@@ -354,7 +349,7 @@ function App() {
           }}>
             © {new Date().getFullYear()} PolicyEngine. Open-source tax and benefit policy simulation.
           </p>
-          <div style={{ display: "flex", gap: spacing.lg }}>
+          <div className="app-footer-links" style={{ display: "flex", gap: spacing.lg }}>
             <FooterLink href="https://github.com/policyengine">GitHub</FooterLink>
             <FooterLink href="https://policyengine.org">PolicyEngine.org</FooterLink>
           </div>
@@ -429,7 +424,7 @@ function RegionChips({ states, onSelect }) {
     .filter((r) => r.states.length > 0);
 
   return (
-    <div style={{
+    <div className="region-chips-grid" style={{
       display: "grid",
       gridTemplateColumns: `repeat(${regions.length}, 1fr)`,
       gap: spacing.lg,

diff --git a/src/components/Breadcrumb.jsx b/src/components/Breadcrumb.jsx
@@ -16,7 +16,7 @@ const ChevronRight = () => (
 export default function Breadcrumb({ stateAbbr, billLabel, onNavigateHome, onNavigateState }) {
   const onBack = billLabel ? onNavigateState : onNavigateHome;
   return (
-    <nav style={{
+    <nav className="breadcrumb-nav" style={{
       display: "flex",
       alignItems: "center",
       gap: spacing.sm,

diff --git a/src/components/StatePanel.jsx b/src/components/StatePanel.jsx
@@ -49,7 +49,7 @@ function SectionHeader({ children }) {
   );
 }
 
-const StatePanel = memo(({ stateAbbr, onNavigateHome, onBillSelect }) => {
+const StatePanel = memo(({ stateAbbr, onBillSelect }) => {
   const state = stateData[stateAbbr];
   const { getBillsForState, getResearchForState } = useData();
   const { bills: pipelineBills } = useProcessedBills(stateAbbr);
@@ -83,7 +83,7 @@ const StatePanel = memo(({ stateAbbr, onNavigateHome, onBillSelect }) => {
   return (
     <div className="animate-fade-in">
       {/* Header */}
-      <div style={{
+      <div className="state-panel-header" style={{
         padding: `${spacing.lg} ${spacing["2xl"]}`,
         background: `linear-gradient(135deg, ${colors.primary[600]} 0%, ${colors.primary[700]} 100%)`,
         borderRadius: `${spacing.radius["2xl"]} ${spacing.radius["2xl"]} 0 0`,
@@ -135,7 +135,7 @@ const StatePanel = memo(({ stateAbbr, onNavigateHome, onBillSelect }) => {
       </div>
 
       {/* Content */}
-      <div style={{
+      <div className="state-panel-content" style={{
         padding: spacing["2xl"],
         backgroundColor: colors.white,
         borderRadius: `0 0 ${spacing.radius["2xl"]} ${spacing.radius["2xl"]}`,
@@ -147,7 +147,7 @@ const StatePanel = memo(({ stateAbbr, onNavigateHome, onBillSelect }) => {
         {(bills.length > 0 || state.taxChanges?.length > 0) && (
           <div style={{ marginBottom: spacing["2xl"] }}>
             <SectionHeader>2026 Legislative Activity</SectionHeader>
-            <div style={{ display: "grid", gridTemplateColumns: bills.length > 3 ? "1fr 1fr" : "1fr", gap: spacing.sm }}>
+            <div className="state-panel-activity-grid" style={{ display: "grid", gridTemplateColumns: bills.length > 3 ? "1fr 1fr" : "1fr", gap: spacing.sm }}>
               {state.taxChanges?.map((change, i) => (
                 <a
                   key={i}

diff --git a/src/components/StateSearchCombobox.jsx b/src/components/StateSearchCombobox.jsx
@@ -86,8 +86,9 @@ export default function StateSearchCombobox({ onSelect, statesWithBills }) {
   const billCount = (abbr) => statesWithBills[abbr] || 0;
 
   return (
-    <div ref={containerRef} style={{ position: "relative" }}>
+    <div ref={containerRef} className="state-search" style={{ position: "relative" }}>
       <div
+        className="state-search-input-wrap"
         style={{
           display: "flex",
           alignItems: "center",
@@ -169,6 +170,7 @@ export default function StateSearchCombobox({ onSelect, statesWithBills }) {
             listStyle: "none",
             zIndex: 100,
           }}
+          className="state-search-listbox"
         >
           {filtered.length === 0 ? (
             <li

diff --git a/src/components/USMap.jsx b/src/components/USMap.jsx
@@ -132,11 +132,13 @@ const USMap = memo(({ selectedState, onStateSelect }) => {
   return (
     <div
       ref={containerRef}
+      className="us-map-shell"
       style={{ position: "relative", width: "100%" }}
       onWheel={handleWheel}
     >
       <ComposableMap
         projection="geoAlbersUsa"
+        className="us-map-svg"
         style={{ width: "100%", height: "auto", maxHeight: "500px" }}
       >
         <ZoomableGroup

diff --git a/src/components/reform/AggregateImpacts.jsx b/src/components/reform/AggregateImpacts.jsx
@@ -19,11 +19,6 @@ const formatCurrency = (value) => {
   return `${sign}$${absValue.toFixed(0)}`;
 };
 
-const formatPercent = (value, decimals = 1) => {
-  if (value === null || value === undefined) return "N/A";
-  return `${(value * 100).toFixed(decimals)}%`;
-};
-
 const formatPctChange = (value, decimals = 1) => {
   if (value === null || value === undefined) return "N/A";
   const sign = value > 0 ? "+" : "";
@@ -83,7 +78,7 @@ export default function AggregateImpacts({ impacts, billTitle }) {
       overflow: "hidden",
     }}>
       {/* Header */}
-      <div style={{
+      <div className="aggregate-impacts-header" style={{
         padding: `${spacing.md} ${spacing.xl}`,
         borderBottom: `1px solid ${colors.border.light}`,
         backgroundColor: colors.background.secondary,
@@ -105,7 +100,7 @@ export default function AggregateImpacts({ impacts, billTitle }) {
 
         {/* Year Tabs for multi-year reforms */}
         {hasMultipleYears ? (
-          <div style={{
+          <div className="aggregate-year-tabs" style={{
             display: "flex",
             gap: spacing.xs,
           }}>
@@ -146,11 +141,11 @@ export default function AggregateImpacts({ impacts, billTitle }) {
       </div>
 
       {/* Budgetary Impact */}
-      <div style={{
+      <div className="aggregate-budget-row" style={{
         padding: spacing.xl,
         borderBottom: `1px solid ${colors.border.light}`,
       }}>
-        <div style={{
+        <div className="aggregate-budget-metric" style={{
           display: "flex",
           alignItems: "baseline",
           gap: spacing.sm,
@@ -182,7 +177,7 @@ export default function AggregateImpacts({ impacts, billTitle }) {
       </div>
 
       {/* Poverty Metrics - Side by Side */}
-      <div style={{
+      <div className="aggregate-poverty-grid" style={{
         display: "grid",
         gridTemplateColumns: "1fr 1fr",
         borderBottom: `1px solid ${colors.border.light}`,

diff --git a/src/components/reform/AggregateStats.jsx b/src/components/reform/AggregateStats.jsx
@@ -96,7 +96,7 @@ export default function AggregateStats({ stats }) {
         )}
       </div>
 
-      <div style={{
+      <div className="aggregate-stats-grid" style={{
         display: "grid",
         gridTemplateColumns: "1fr 1fr 1fr",
         gap: spacing.md,

diff --git a/src/components/reform/ReformAnalyzer.jsx b/src/components/reform/ReformAnalyzer.jsx
@@ -76,7 +76,7 @@ const TABS = [
   { id: "household", label: "Your Household", icon: UserIcon },
 ];
 
-export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill }) {
+export default function ReformAnalyzer({ reformConfig, stateAbbr, bill }) {
   const { compareReform, loading, error, apiVersion } = usePolicyEngineAPI();
   const { getImpact } = useData();
   const [activeTab, setActiveTab] = useState("overview");
@@ -166,7 +166,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
       }}
     >
       {/* Header */}
-      <div style={{
+      <div className="reform-header" style={{
         padding: `${spacing.lg} ${spacing["2xl"]}`,
         borderBottom: `1px solid ${colors.border.light}`,
         display: "flex",
@@ -187,7 +187,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
       </div>
 
       {/* Tabs */}
-      <div style={{
+      <div className="reform-tabs" style={{
         display: "flex",
         gap: spacing.xs,
         padding: `0 ${spacing["2xl"]}`,
@@ -208,6 +208,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
                 setActiveTab(tab.id);
                 track("tab_switched", { tab_id: tab.id, reform_id: reformConfig.id, state_abbr: stateAbbr });
               }}
+              className="reform-tab"
               style={{
                 display: "flex",
                 alignItems: "center",
@@ -234,7 +235,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
       </div>
 
       {/* Content */}
-      <div style={{
+      <div className="reform-content" style={{
         padding: spacing["2xl"],
         ...(activeTab === "districts" ? { display: "flex", flexDirection: "column" } : {}),
       }}>
@@ -250,7 +251,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
 
         {/* Districts Tab */}
         {activeTab === "districts" && (
-          <div style={{ height: "70vh", display: "flex", flexDirection: "column" }}>
+          <div className="reform-districts-panel" style={{ height: "70vh", display: "flex", flexDirection: "column" }}>
             <DistrictMap
               stateAbbr={stateAbbr}
               reformId={reformConfig.id}
@@ -261,7 +262,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
 
         {/* Household Tab */}
         {activeTab === "household" && (
-          <div style={{
+          <div className="reform-household-grid" style={{
             display: "grid",
             gridTemplateColumns: "1fr 1fr",
             gap: spacing["3xl"],
@@ -367,7 +368,7 @@ export default function ReformAnalyzer({ reformConfig, stateAbbr, billUrl, bill
       </div>
 
       {/* Footer */}
-      <div style={{
+      <div className="reform-footer" style={{
         padding: `${spacing.sm} ${spacing["2xl"]}`,
         borderTop: `1px solid ${colors.border.light}`,
         backgroundColor: colors.background.secondary,

diff --git a/src/components/reform/ResultsDisplay.jsx b/src/components/reform/ResultsDisplay.jsx
@@ -162,7 +162,7 @@ export default function ResultsDisplay({ baseline, reform, error }) {
       </div>
 
       {/* Breakdown */}
-      <div style={{
+      <div className="results-breakdown-grid" style={{
         display: "grid",
         gridTemplateColumns: "1fr 1fr 1fr",
         gap: spacing.md,