"use client";

import { useState, useEffect, useRef } from "react";
import { Button } from "@/components/ui/button";
import { Switch } from "@/components/ui/switch";
import { motion, Variants } from "framer-motion";
import { Shield, EyeOff } from "lucide-react";
import { useTheme } from "next-themes";
import dynamic from "next/dynamic"; // ИМПОРТИРУЕМ DYNAMIC
import { Dictionary } from "@/lib/IDict";

// ДИНАМИЧЕСКИЙ ИМПОРТ МАТРИЦЫ (ОТКЛЮЧАЕМ SSR)
const MatrixBackground = dynamic(() => import("./MatrixBackground"), {
  ssr: false,
});

// --- КОМПОНЕНТ ГЛАЗ ---
function WatcherEyes({ isClosed }: { isClosed: boolean }) {
  // ... (весь твой код WatcherEyes остается без изменений,
  // он абсолютно безопасен для SSR)
  const [mousePos, setMousePos] = useState({ x: 0, y: 0 });
  const [isBlinking, setIsBlinking] = useState(false);
  const blinkTimerRef = useRef<NodeJS.Timeout | null>(null);
  const unblinkTimerRef = useRef<NodeJS.Timeout | null>(null);

  useEffect(() => {
    const handleMouseMove = (e: MouseEvent) => {
      const x = (e.clientX / window.innerWidth) * 2 - 1;
      const y = (e.clientY / window.innerHeight) * 2 - 1;
      setMousePos({ x, y });
    };
    if (!isClosed) window.addEventListener("mousemove", handleMouseMove);
    return () => window.removeEventListener("mousemove", handleMouseMove);
  }, [isClosed]);

  useEffect(() => {
    if (isClosed) {
      if (blinkTimerRef.current) clearTimeout(blinkTimerRef.current);
      if (unblinkTimerRef.current) clearTimeout(unblinkTimerRef.current);
      return;
    }
    const scheduleNextBlink = () => {
      const delay = Math.random() * 4000 + 1500;
      blinkTimerRef.current = setTimeout(() => {
        setIsBlinking(true);
        unblinkTimerRef.current = setTimeout(() => {
          setIsBlinking(false);
          scheduleNextBlink();
        }, 150);
      }, delay);
    };
    scheduleNextBlink();
    return () => {
      if (blinkTimerRef.current) clearTimeout(blinkTimerRef.current);
      if (unblinkTimerRef.current) clearTimeout(unblinkTimerRef.current);
    };
  }, [isClosed]);

  const maxOffset = 16;
  const eyeVariants: Variants = {
    open: {
      height: "48px",
      transition: { type: "spring", stiffness: 300, damping: 15, mass: 0.5 },
    },
    closed: { height: "0px", transition: { duration: 0.08, ease: "circIn" } },
  };
  const shouldBeClosed = isClosed || isBlinking;

  return (
    <div className="flex gap-8 justify-center mb-10 h-12 items-center">
      {[1, 2].map((i) => (
        <motion.div
          key={i}
          variants={eyeVariants}
          initial="open"
          animate={shouldBeClosed ? "closed" : "open"}
          className={`w-28 relative overflow-hidden flex items-center justify-center rounded-[100%] transition-colors transition-shadow duration-500 ${
            isClosed
              ? "bg-primary/20 border-primary/50 shadow-[0_0_15px_rgba(0,240,255,0.2)]"
              : "bg-gray-100 dark:bg-[#050505] border-2 border-secondary/50 dark:border-secondary shadow-[0_0_20px_rgba(112,0,255,0.2)_inset,0_2px_10px_rgba(0,0,0,0.1)] dark:shadow-[0_0_30px_rgba(112,0,255,0.5)_inset,0_0_20px_rgba(112,0,255,0.4)]"
          }`}
        >
          <div className="absolute inset-0 shadow-[inset_0px_8px_16px_rgba(0,0,0,0.2)] dark:shadow-[inset_0px_10px_20px_rgba(0,0,0,0.9)] rounded-[100%] z-10 pointer-events-none" />
          {!isClosed && (
            <motion.div
              animate={{ x: mousePos.x * maxOffset, y: mousePos.y * maxOffset }}
              transition={{ type: "tween", ease: "backOut", duration: 0.15 }}
              className="w-12 h-12 rounded-full flex items-center justify-center relative z-0"
            >
              <div className="absolute inset-0 rounded-full border-[4px] border-secondary opacity-90 shadow-[0_0_10px_rgba(112,0,255,0.4)] dark:shadow-[0_0_15px_#7000FF,inset_0_0_10px_#7000FF]" />
              <div className="w-5 h-5 bg-black rounded-full relative overflow-hidden flex items-center justify-center shadow-[0_4px_6px_rgba(0,0,0,0.5)] dark:shadow-[0_0_10px_#000]">
                <div className="w-1.5 h-1.5 bg-white rounded-full shadow-[0_0_8px_#fff]" />
              </div>
              <div className="absolute top-1.5 right-2 w-2.5 h-2.5 bg-white/90 blur-[0.5px] rounded-full" />
              <div className="absolute top-4 right-1.5 w-1 h-1 bg-white rounded-full" />
            </motion.div>
          )}
        </motion.div>
      ))}
    </div>
  );
}

// --- ГЛАВНЫЙ КОМПОНЕНТ HERO ---
export function Hero({ dict }: { dict: Dictionary["hero"] }) {
  const [isVpnOn, setIsVpnOn] = useState(false);
  const { resolvedTheme } = useTheme();

  return (
    <section className="relative pt-32 pb-20 md:pt-48 md:pb-32 flex flex-col items-center text-center px-4 min-h-[90vh] justify-center overflow-hidden">
      {/* МАТРИЦА ГРУЗИТСЯ ТОЛЬКО НА КЛИЕНТЕ */}
      <MatrixBackground isSecure={isVpnOn} theme={resolvedTheme} />

      {/* Градиент */}
      <div className="absolute inset-0 bg-[radial-gradient(ellipse_at_center,_transparent_0%,_var(--background)_80%)] -z-10" />

      <motion.div
        initial={{ opacity: 0, y: 20 }}
        animate={{ opacity: 1, y: 0 }}
        transition={{ duration: 0.5 }}
        className="relative z-10 w-full max-w-4xl mx-auto"
      >
        <motion.div
          layout
          className={`inline-flex items-center gap-2 px-4 py-1.5 rounded-full border text-sm font-bold mb-8 transition-colors duration-500 shadow-sm ${
            isVpnOn
              ? "bg-primary/20 border-primary/40 text-primary-foreground dark:text-primary"
              : "bg-secondary/20 border-secondary/40 text-secondary-foreground dark:text-secondary"
          }`}
        >
          {isVpnOn ? (
            <Shield className="w-4 h-4" />
          ) : (
            <EyeOff className="w-4 h-4" />
          )}
          <span>{isVpnOn ? dict.badgeSecure : dict.badge}</span>
        </motion.div>

        <WatcherEyes isClosed={isVpnOn} />

        <h1 className="text-4xl md:text-6xl font-extrabold tracking-tight text-foreground mb-6 transition-colors duration-500">
          {dict.titleStart}{" "}
          <span
            className={`transition-all duration-500 ${
              isVpnOn
                ? "text-primary dark:drop-shadow-[0_0_20px_rgba(0,240,255,0.6)]"
                : "text-secondary dark:drop-shadow-[0_0_20px_rgba(112,0,255,0.6)]"
            }`}
          >
            {dict.titleHighlight}
          </span>
        </h1>

        <p className="text-muted-foreground font-medium text-lg md:text-xl max-w-2xl mx-auto mb-12">
          {dict.subtitle}
        </p>

        <div className="flex flex-col items-center gap-8 mb-12">
          <div className="flex items-center gap-4 bg-card/80 backdrop-blur-xl border border-border/60 p-4 rounded-3xl shadow-md dark:shadow-lg transition-colors duration-300">
            <Switch
              checked={isVpnOn}
              onCheckedChange={setIsVpnOn}
              className="data-[state=checked]:bg-primary data-[state=unchecked]:bg-secondary"
            />
            <span
              className={`text-base font-bold transition-colors ${
                isVpnOn
                  ? "text-primary dark:drop-shadow-[0_0_5px_rgba(0,240,255,0.8)]"
                  : "text-foreground"
              }`}
            >
              Netrunner VPN
            </span>
          </div>

          <div className="flex flex-col sm:flex-row gap-4 justify-center w-full sm:w-auto">
            <Button
              className={`text-lg font-bold px-8 py-6 rounded-2xl transition-all duration-300 w-full sm:w-auto ${
                isVpnOn
                  ? "bg-primary text-primary-foreground hover:bg-primary/90 shadow-[0_4px_14px_rgba(0,240,255,0.4)] dark:shadow-[0_0_20px_rgba(0,240,255,0.3)]"
                  : "bg-secondary text-secondary-foreground hover:bg-secondary/90 shadow-[0_4px_14px_rgba(112,0,255,0.4)] dark:shadow-[0_0_20px_rgba(112,0,255,0.3)]"
              }`}
            >
              {dict.ctaPrimary}
            </Button>
            <Button
              variant="outline"
              className="border-border/60 bg-background/60 backdrop-blur-md text-foreground hover:bg-muted font-semibold text-lg px-8 py-6 rounded-2xl w-full sm:w-auto shadow-sm"
            >
              {dict.ctaSecondary}
            </Button>
          </div>
        </div>
      </motion.div>
    </section>
  );
}