Apply warm editorial design system across all components

Replace generic blue/gray colors with warm editorial palette:
- Navigation: coral active states, branded logo colors
- Footer: navy background, gold section titles
- FilterBar: coral search button and focus states
- SchoolCard: coral left accent on hover, teal/coral buttons
- HomeView: gradient hero section, Playfair Display headings
- RankingsView: gold top-3 highlights, warm table styling
- ComparisonView: teal card borders, coral buttons

Consistent use of CSS variables and Playfair Display serif font
for headings throughout.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

nextjs-app/components/Footer.module.css

@@ -1,6 +1,6 @@
 .footer {
-  background: #1f2937;
-  color: #d1d5db;
+  background: var(--accent-navy, #2c3e50);
+  color: var(--bg-secondary, #f3ede4);
   margin-top: auto;
 }
 
@@ -27,21 +27,22 @@
   margin: 0;
   font-size: 1.25rem;
   font-weight: 700;
-  color: white;
+  color: var(--bg-primary, #faf7f2);
+  font-family: var(--font-playfair), 'Playfair Display', serif;
 }
 
 .description {
   margin: 0;
   font-size: 0.875rem;
   line-height: 1.6;
-  color: #9ca3af;
+  color: rgba(250, 247, 242, 0.7);
 }
 
 .sectionTitle {
   margin: 0;
   font-size: 0.875rem;
   font-weight: 600;
-  color: white;
+  color: var(--accent-gold, #c9a227);
   text-transform: uppercase;
   letter-spacing: 0.05em;
 }
@@ -57,24 +58,24 @@
 
 .link {
   font-size: 0.875rem;
-  color: #9ca3af;
+  color: rgba(250, 247, 242, 0.7);
   text-decoration: none;
   transition: color 0.2s ease;
 }
 
 .link:hover {
-  color: white;
+  color: var(--accent-gold, #c9a227);
 }
 
 .linkDisabled {
   font-size: 0.875rem;
-  color: #6b7280;
+  color: rgba(250, 247, 242, 0.4);
   cursor: not-allowed;
 }
 
 .bottom {
   padding-top: 2rem;
-  border-top: 1px solid #374151;
+  border-top: 1px solid rgba(250, 247, 242, 0.15);
   display: flex;
   flex-direction: column;
   gap: 0.5rem;
@@ -84,15 +85,15 @@
 .disclaimer {
   margin: 0;
   font-size: 0.875rem;
-  color: #9ca3af;
+  color: rgba(250, 247, 242, 0.6);
 }
 
 .disclaimer .link {
-  color: #60a5fa;
+  color: var(--accent-coral, #e07256);
 }
 
 .disclaimer .link:hover {
-  color: #93c5fd;
+  color: var(--accent-gold, #c9a227);
 }
 
 @media (max-width: 768px) {