diff --git a/src/App.css b/src/App.css
index 6206ce5..09c0030 100644
--- a/src/App.css
+++ b/src/App.css
@@ -3,12 +3,12 @@
    ======================================== */
 
 :root {
-  --bg: #fafafa;
+  --bg: #f8fafc;
   --surface: #ffffff;
-  --border: #e5e5e5;
-  --text-primary: #171717;
-  --text-secondary: #525252;
-  --text-muted: #a3a3a3;
+  --border: #e2e8f0;
+  --text-primary: #0f172a;
+  --text-secondary: #334155;
+  --text-muted: #64748b;
   --accent: #2563eb;
   --primary: #2563eb;
   --accent-light: #dbeafe;
@@ -17,8 +17,8 @@
   --danger: #dc2626;
   --danger-light: #fee2e2;
   --gold: #b8860b;
-  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
-  --shadow: 0 4px 12px rgba(0,0,0,0.05);
+  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
+  --shadow: 0 4px 12px rgba(0,0,0,0.08);
   --radius: 12px;
 }
 
@@ -32,8 +32,10 @@ body {
   font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
   background: var(--bg);
   color: var(--text-primary);
-  line-height: 1.5;
+  font-size: 15px;
+  line-height: 1.6;
   -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
 }
 
 /* Loading & Error */
@@ -178,8 +180,8 @@ body {
 
 .nav-brand-text {
   font-family: 'DM Sans', 'Inter', -apple-system, sans-serif;
-  font-size: 1.125rem;
-  font-weight: 600;
+  font-size: 1.25rem;
+  font-weight: 700;
   color: #1e3a5f;
   letter-spacing: -0.02em;
 }
@@ -230,9 +232,9 @@ body {
 .nav-link {
   color: var(--text-secondary);
   text-decoration: none;
-  padding: 10px 18px;
+  padding: 10px 20px;
   border-radius: 8px;
-  font-size: 0.875rem;
+  font-size: 0.9375rem;
   font-weight: 600;
   transition: all 0.2s;
   display: flex;
@@ -314,15 +316,16 @@ body {
 }
 
 .page-title h1 {
-  font-size: 1.5rem;
-  font-weight: 600;
+  font-size: 1.75rem;
+  font-weight: 700;
   letter-spacing: -0.02em;
-  margin-bottom: 4px;
+  margin-bottom: 6px;
+  color: var(--text-primary);
 }
 
 .page-title p {
-  color: var(--text-muted);
-  font-size: 0.875rem;
+  color: var(--text-secondary);
+  font-size: 0.9375rem;
 }
 
 /* Page Title with Actions (Labels toggle) */
@@ -331,7 +334,7 @@ body {
   align-items: flex-start;
   justify-content: space-between;
   gap: 16px;
-  margin-bottom: 24px;
+  margin-bottom: 28px;
 }
 
 .page-title-with-actions .page-title {
@@ -341,14 +344,14 @@ body {
 .toggle-with-label {
   display: flex;
   align-items: center;
-  gap: 6px;
-  margin-top: 4px;
+  gap: 8px;
+  margin-top: 6px;
 }
 
 .toggle-with-label .toggle-text {
-  font-size: 0.6875rem;
+  font-size: 0.8125rem;
   font-weight: 500;
-  color: var(--text-muted);
+  color: var(--text-secondary);
 }
 
 /* Filters - now uses .controls for consistency */
@@ -363,31 +366,32 @@ body {
 
 .stat-card {
   background: var(--surface);
-  padding: 24px;
+  padding: 28px;
   border-radius: var(--radius);
   border: 1px solid var(--border);
+  box-shadow: var(--shadow-sm);
 }
 
 .stat-card h3 {
-  font-size: 0.75rem;
-  font-weight: 500;
+  font-size: 0.8125rem;
+  font-weight: 600;
   color: var(--text-muted);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
-  margin-bottom: 8px;
+  letter-spacing: 0.04em;
+  margin-bottom: 10px;
 }
 
 .stat-value {
-  font-size: 1.75rem;
-  font-weight: 600;
+  font-size: 2rem;
+  font-weight: 700;
   color: var(--text-primary);
   letter-spacing: -0.02em;
 }
 
 .stat-change {
-  font-size: 0.75rem;
-  font-weight: 500;
-  margin-top: 4px;
+  font-size: 0.875rem;
+  font-weight: 600;
+  margin-top: 6px;
 }
 
 .stat-change.positive { color: var(--success); }
@@ -425,7 +429,7 @@ body {
 }
 
 .chart-card h2 {
-  font-size: 0.875rem;
+  font-size: 1rem;
   font-weight: 600;
   color: var(--text-primary);
   margin-bottom: 20px;
@@ -463,24 +467,24 @@ body {
 table {
   width: 100%;
   border-collapse: collapse;
-  font-size: 0.8125rem;
+  font-size: 0.9375rem;
 }
 
 table th {
-  font-weight: 500;
-  font-size: 0.6875rem;
+  font-weight: 600;
+  font-size: 0.75rem;
   color: var(--text-muted);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
-  padding: 12px;
+  letter-spacing: 0.04em;
+  padding: 14px 12px;
   text-align: right;
-  border-bottom: 1px solid var(--border);
+  border-bottom: 2px solid var(--border);
 }
 
 table th:first-child { text-align: left; }
 
 table td {
-  padding: 12px;
+  padding: 14px 12px;
   text-align: right;
   border-bottom: 1px solid var(--border);
   color: var(--text-secondary);
@@ -492,12 +496,12 @@ table tbody tr:hover {
   background: var(--bg);
 }
 
-.bold { font-weight: 600; color: var(--text-primary); }
+.bold { font-weight: 700; color: var(--text-primary); }
 .muted { color: var(--text-muted); }
-.primary { color: var(--accent); }
-.purple { color: #7c3aed; }
-.positive { color: var(--success); }
-.negative { color: var(--danger); }
+.primary { color: var(--accent); font-weight: 600; }
+.purple { color: #7c3aed; font-weight: 600; }
+.positive { color: var(--success); font-weight: 600; }
+.negative { color: var(--danger); font-weight: 600; }
 
 /* Comparison Page */
 .controls {
@@ -526,20 +530,20 @@ table tbody tr:hover {
 }
 
 .controls h3 {
-  font-size: 0.75rem;
-  font-weight: 500;
-  color: var(--text-muted);
+  font-size: 0.8125rem;
+  font-weight: 600;
+  color: var(--text-secondary);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
+  letter-spacing: 0.04em;
 }
 
 .controls-reset {
   background: transparent;
   border: 1px solid var(--border);
-  color: var(--text-muted);
-  padding: 4px 12px;
+  color: var(--text-secondary);
+  padding: 6px 14px;
   border-radius: 6px;
-  font-size: 0.75rem;
+  font-size: 0.8125rem;
   font-weight: 500;
   cursor: pointer;
   transition: all 0.2s;
@@ -578,22 +582,22 @@ table tbody tr:hover {
 }
 
 .control-group label {
-  font-size: 0.6875rem;
-  font-weight: 500;
-  color: var(--text-muted);
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: var(--text-secondary);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
+  letter-spacing: 0.04em;
 }
 
 .control-group select,
 .control-group input[type="date"] {
-  padding: 10px 14px;
+  padding: 12px 16px;
   border: 1px solid var(--border);
-  border-radius: 6px;
-  font-size: 0.875rem;
+  border-radius: 8px;
+  font-size: 0.9375rem;
   background: var(--surface);
   color: var(--text-primary);
-  min-width: 150px;
+  min-width: 160px;
 }
 
 .control-group select:focus,
@@ -630,16 +634,16 @@ table tbody tr:hover {
   display: flex;
   align-items: center;
   justify-content: center;
-  gap: 24px;
+  gap: 32px;
   background: var(--bg);
-  padding: 20px 32px;
+  padding: 24px 40px;
   border-radius: 12px;
-  margin-bottom: 24px;
+  margin-bottom: 28px;
 }
 
 .period-display-banner .period-box {
   text-align: center;
-  min-width: 180px;
+  min-width: 200px;
 }
 
 .period-display-banner .period-box.prev {
@@ -651,30 +655,30 @@ table tbody tr:hover {
 }
 
 .period-display-banner .period-label {
-  font-size: 0.6875rem;
+  font-size: 0.75rem;
   font-weight: 600;
   text-transform: uppercase;
-  letter-spacing: 0.05em;
+  letter-spacing: 0.04em;
   color: var(--text-muted);
-  margin-bottom: 4px;
+  margin-bottom: 6px;
 }
 
 .period-display-banner .period-value {
-  font-size: 1.5rem;
-  font-weight: 600;
-  margin-bottom: 2px;
+  font-size: 1.75rem;
+  font-weight: 700;
+  margin-bottom: 4px;
 }
 
 .period-display-banner .period-dates {
-  font-size: 0.8125rem;
-  color: var(--text-muted);
+  font-size: 0.9375rem;
+  color: var(--text-secondary);
 }
 
 .period-display-banner .period-vs {
-  font-size: 0.875rem;
-  font-weight: 500;
+  font-size: 1rem;
+  font-weight: 600;
   color: var(--text-muted);
-  padding: 0 8px;
+  padding: 0 12px;
 }
 
 /* Comparison Metrics */
@@ -687,25 +691,26 @@ table tbody tr:hover {
 
 .metric-card {
   background: var(--surface);
-  padding: 20px;
+  padding: 24px;
   border-radius: var(--radius);
   border: 1px solid var(--border);
+  box-shadow: var(--shadow-sm);
 }
 
 .metric-card h4 {
-  font-size: 0.75rem;
-  font-weight: 500;
-  color: var(--text-muted);
+  font-size: 0.8125rem;
+  font-weight: 600;
+  color: var(--text-secondary);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
-  margin-bottom: 12px;
+  letter-spacing: 0.04em;
+  margin-bottom: 14px;
 }
 
 .metric-values {
   display: flex;
   align-items: center;
   justify-content: space-between;
-  gap: 12px;
+  gap: 14px;
 }
 
 .metric-period {
@@ -713,15 +718,15 @@ table tbody tr:hover {
 }
 
 .metric-period .year {
-  font-size: 0.625rem;
+  font-size: 0.75rem;
   color: var(--text-muted);
   text-transform: uppercase;
-  margin-bottom: 2px;
+  margin-bottom: 4px;
 }
 
 .metric-period .value {
-  font-size: 1.125rem;
-  font-weight: 600;
+  font-size: 1.25rem;
+  font-weight: 700;
 }
 
 .metric-period.previous .value { color: var(--text-muted); }
@@ -729,19 +734,19 @@ table tbody tr:hover {
 
 .metric-change {
   text-align: center;
-  padding: 6px 10px;
-  border-radius: 6px;
-  min-width: 70px;
+  padding: 8px 12px;
+  border-radius: 8px;
+  min-width: 80px;
 }
 
 .metric-change .pct {
-  font-size: 0.875rem;
-  font-weight: 600;
+  font-size: 0.9375rem;
+  font-weight: 700;
 }
 
 .metric-change .abs {
-  font-size: 0.625rem;
-  opacity: 0.8;
+  font-size: 0.75rem;
+  opacity: 0.9;
 }
 
 .metric-change.positive {
@@ -797,31 +802,32 @@ table tbody tr:hover {
 .toggle-switch {
   display: flex;
   background: var(--border);
-  padding: 2px;
-  border-radius: 12px;
-  gap: 0;
+  padding: 3px;
+  border-radius: 10px;
+  gap: 2px;
 }
 
 .toggle-switch button {
   border: none;
   background: transparent;
   color: var(--text-muted);
-  padding: 3px 10px;
-  border-radius: 10px;
-  font-size: 0.625rem;
-  font-weight: 500;
+  padding: 6px 14px;
+  border-radius: 8px;
+  font-size: 0.8125rem;
+  font-weight: 600;
   cursor: pointer;
-  transition: all 0.25s ease;
+  transition: all 0.2s ease;
 }
 
 .toggle-switch button:hover:not(.active) {
   color: var(--text-secondary);
+  background: rgba(0,0,0,0.03);
 }
 
 .toggle-switch button.active {
   background: var(--surface);
   color: var(--text-primary);
-  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
 }
 
 /* Data Labels Toggle */
@@ -855,9 +861,9 @@ table tbody tr:hover {
   border: none;
   background: transparent;
   color: var(--text-muted);
-  padding: 6px 12px;
+  padding: 7px 14px;
   border-radius: 6px;
-  font-size: 0.75rem;
+  font-size: 0.8125rem;
   font-weight: 500;
   cursor: pointer;
   transition: all 0.2s;