Add staggered page load animations

Implement elegant fadeInUp animations with staggered delays for main page
elements to create a polished, progressive reveal effect on page load.

Changes:
- layout.css: Added fadeInUp keyframes and delay utility classes
  (200ms, 400ms, 600ms, 800ms)
- +page.svelte: Applied animations to title, date, verse display,
  search input, guesses table, and credits

Animation sequence:
1. Title (0ms)
2. Date + Verse Display (200ms)
3. Search Input (400ms)
4. Guesses Table (600ms)
5. Credits (800ms - when won)

Creates a smooth, professional page load experience without changing any
existing design or functionality.

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

src/routes/layout.css

@@ -16,4 +16,36 @@ html, body {
 	letter-spacing: 0.2em;
 	color: rgb(107 114 128);
 	font-weight: 700;
+}
+
+/* Page load animations */
+@keyframes fadeInUp {
+	from {
+		opacity: 0;
+		transform: translateY(30px);
+	}
+	to {
+		opacity: 1;
+		transform: translateY(0);
+	}
+}
+
+.animate-fade-in-up {
+	animation: fadeInUp 0.8s ease-out both;
+}
+
+.animate-delay-200 {
+	animation-delay: 0.2s;
+}
+
+.animate-delay-400 {
+	animation-delay: 0.4s;
+}
+
+.animate-delay-600 {
+	animation-delay: 0.6s;
+}
+
+.animate-delay-800 {
+	animation-delay: 0.8s;
 }