"use client";

import { useState, useEffect } from "react";
import { motion, AnimatePresence } from "framer-motion";

const INTRO_LINES = [
  "EVANDRO",
  "FONSECA",
  "JUNIOR",
];

export default function PageIntro() {
  const [isVisible, setIsVisible] = useState(true);
  const [counter, setCounter] = useState(0);

  useEffect(() => {
    // Animate counter from 0 to 100
    const duration = 2000;
    const start = performance.now();

    const tick = (now: number) => {
      const elapsed = now - start;
      const progress = Math.min(elapsed / duration, 1);
      // Eased progress
      const eased = 1 - Math.pow(1 - progress, 3);
      setCounter(Math.floor(eased * 100));

      if (progress < 1) {
        requestAnimationFrame(tick);
      } else {
        // Wait a beat then hide
        setTimeout(() => setIsVisible(false), 400);
      }
    };

    requestAnimationFrame(tick);
  }, []);

  return (
    <AnimatePresence>
      {isVisible && (
        <motion.div
          className="fixed inset-0 z-[10000] flex items-center justify-center bg-[#0a0a0a]"
          exit={{
            clipPath: "inset(0 0 100% 0)",
            transition: { duration: 1, ease: [0.76, 0, 0.24, 1] },
          }}
        >
          {/* Horizontal lines decoration */}
          <div className="pointer-events-none absolute inset-0 overflow-hidden">
            {[...Array(5)].map((_, i) => (
              <motion.div
                key={i}
                className="absolute left-0 h-px w-full bg-[rgba(204,255,0,0.06)]"
                style={{ top: `${20 + i * 15}%` }}
                initial={{ scaleX: 0 }}
                animate={{ scaleX: 1 }}
                transition={{
                  duration: 1.5,
                  delay: 0.1 * i,
                  ease: [0.76, 0, 0.24, 1],
                }}
              />
            ))}
          </div>

          {/* Counter */}
          <motion.div
            className="absolute bottom-12 right-12 font-mono text-[clamp(48px,8vw,96px)] font-bold leading-none tracking-tighter text-[rgba(204,255,0,0.15)]"
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            transition={{ duration: 0.5 }}
          >
            {counter.toString().padStart(3, "0")}
          </motion.div>

          {/* Progress bar */}
          <div className="absolute bottom-8 left-12 right-12 h-px bg-[rgba(255,255,255,0.06)]">
            <motion.div
              className="h-full bg-[var(--slash)]"
              initial={{ width: "0%" }}
              animate={{ width: `${counter}%` }}
              transition={{ duration: 0.1 }}
            />
          </div>

          {/* Name reveal */}
          <div className="relative flex flex-col items-center gap-0">
            {INTRO_LINES.map((line, i) => (
              <div key={line} className="overflow-hidden">
                <motion.div
                  className="font-display text-[clamp(2.5rem,10vw,7rem)] font-extrabold leading-[0.9] tracking-[-0.06em] text-[#f4f2ed]"
                  initial={{ y: "100%", rotateX: -40 }}
                  animate={{ y: "0%", rotateX: 0 }}
                  transition={{
                    duration: 0.8,
                    delay: 0.3 + i * 0.12,
                    ease: [0.16, 1, 0.3, 1],
                  }}
                >
                  {line}
                </motion.div>
              </div>
            ))}

            {/* Subtitle */}
            <motion.div
              className="mt-6 overflow-hidden"
              initial={{ opacity: 0 }}
              animate={{ opacity: 1 }}
              transition={{ delay: 1, duration: 0.6 }}
            >
              <motion.p
                className="font-mono text-[10px] uppercase tracking-[0.3em] text-[rgba(204,255,0,0.7)]"
                initial={{ y: 20 }}
                animate={{ y: 0 }}
                transition={{ delay: 1, duration: 0.6, ease: [0.16, 1, 0.3, 1] }}
              >
                Software Engineer
              </motion.p>
            </motion.div>
          </div>

          {/* Corner markers */}
          <div className="pointer-events-none absolute inset-0">
            {/* Top-left */}
            <motion.div
              className="absolute left-8 top-8"
              initial={{ opacity: 0 }}
              animate={{ opacity: 0.3 }}
              transition={{ delay: 0.5 }}
            >
              <div className="h-6 w-px bg-[var(--slash)]" />
              <div className="absolute left-0 top-0 h-px w-6 bg-[var(--slash)]" />
            </motion.div>
            {/* Top-right */}
            <motion.div
              className="absolute right-8 top-8"
              initial={{ opacity: 0 }}
              animate={{ opacity: 0.3 }}
              transition={{ delay: 0.6 }}
            >
              <div className="absolute right-0 top-0 h-6 w-px bg-[var(--slash)]" />
              <div className="absolute right-0 top-0 h-px w-6 bg-[var(--slash)]" />
            </motion.div>
            {/* Bottom-left */}
            <motion.div
              className="absolute bottom-8 left-8"
              initial={{ opacity: 0 }}
              animate={{ opacity: 0.3 }}
              transition={{ delay: 0.7 }}
            >
              <div className="h-6 w-px bg-[var(--slash)]" />
              <div className="absolute bottom-0 left-0 h-px w-6 bg-[var(--slash)]" />
            </motion.div>
          </div>
        </motion.div>
      )}
    </AnimatePresence>
  );
}