AI-CS/frontend/components/ui/fade-in.tsx

"use client";

import { motion } from "framer-motion";
import { ReactNode } from "react";

interface FadeInProps {
  children: ReactNode;
  delay?: number;
  className?: string;
}

export function FadeIn({ children, delay = 0, className = "" }: FadeInProps) {
  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      whileInView={{ opacity: 1, y: 0 }}
      viewport={{ once: true, margin: "-100px" }}
      transition={{ duration: 0.6, delay, ease: "easeOut" }}
      className={className}
      style={{ willChange: "opacity, transform" }}
    >
      {children}
    </motion.div>
  );
}

interface FadeInStaggerProps {
  children: ReactNode;
  className?: string;
}

export function FadeInStagger({ children, className = "" }: FadeInStaggerProps) {
  return (
    <motion.div
      initial="hidden"
      whileInView="visible"
      viewport={{ once: true, margin: "-100px" }}
      variants={{
        hidden: { opacity: 0 },
        visible: {
          opacity: 1,
          transition: {
            staggerChildren: 0.1,
          },
        },
      }}
      className={className}
    >
      {children}
    </motion.div>
  );
}

interface FadeInItemProps {
  children: ReactNode;
  className?: string;
}

export function FadeInItem({ children, className = "" }: FadeInItemProps) {
  return (
    <motion.div
      variants={{
        hidden: { opacity: 0, y: 20 },
        visible: { opacity: 1, y: 0 },
      }}
      transition={{ duration: 0.5, ease: "easeOut" }}
      className={className}
      style={{ willChange: "opacity, transform" }}
    >
      {children}
    </motion.div>
  );
}