feat: integrate Tailwind CSS with custom theme and animations

Added Tailwind CSS and tw-animate-css imports to globals.css. Introduced a custom dark variant and an extensive @theme inline block with CSS variables for colors, radii, and animations. Included keyframes for shimmer-slide, spin-around, gradient, shine, and background-position-spin to enable consistent theming and dynamic UI effects across the application.

components/ui/word-rotate.tsx

@@ -0,0 +1,50 @@
+"use client"
+
+import { useEffect, useState } from "react"
+import { AnimatePresence, motion, MotionProps } from "motion/react"
+
+import { cn } from "@/lib/utils"
+
+interface WordRotateProps {
+  words: string[]
+  duration?: number
+  motionProps?: MotionProps
+  className?: string
+}
+
+export function WordRotate({
+  words,
+  duration = 2500,
+  motionProps = {
+    initial: { opacity: 0, y: -50 },
+    animate: { opacity: 1, y: 0 },
+    exit: { opacity: 0, y: 50 },
+    transition: { duration: 0.25, ease: "easeOut" },
+  },
+  className,
+}: WordRotateProps) {
+  const [index, setIndex] = useState(0)
+
+  useEffect(() => {
+    const interval = setInterval(() => {
+      setIndex((prevIndex) => (prevIndex + 1) % words.length)
+    }, duration)
+
+    // Clean up interval on unmount
+    return () => clearInterval(interval)
+  }, [words, duration])
+
+  return (
+    <div className="overflow-hidden py-2">
+      <AnimatePresence mode="wait">
+        <motion.h1
+          key={words[index]}
+          className={cn(className)}
+          {...motionProps}
+        >
+          {words[index]}
+        </motion.h1>
+      </AnimatePresence>
+    </div>
+  )
+}