Add section IDs and smooth scrolling for improved navigation:

- Updated components (`Hero`, `Welcome`, `EventsGrid`, `ImageCarousel`, `Drinks`) to accept optional `id` props and applied them to `<section>` elements.
- Enabled smooth scrolling by adding `scroll-behavior: smooth` to global styles.
- Enhanced dropdown menu: added internal links for section navigation and adjusted styling for improved responsiveness.
- Updated color handling in `ImageCarousel` to use CSS variables for better theme consistency.

styles/index.css

@@ -5,6 +5,11 @@
 	box-sizing: border-box;
 }
 
+/* Add smooth scrolling behavior */
+html {
+	scroll-behavior: smooth;
+}
+
 body {
 	font-family: var(--font-family-primary);
 	background-color: var(--color-background);