'use client';

import { motion } from 'framer-motion';
import { useLocale } from '@/lib/i18n/locale-context';
import { cn } from '@/lib/utils';
import { ParticleCanvas } from './ParticleCanvas';
import { Typewriter } from './Typewriter';
import { Counter } from '@/components/ui/Counter';

const fadeUp = (delay = 0) => ({
  initial: { opacity: 0, y: 28 },
  animate: { opacity: 1, y: 0 },
  transition: { duration: 0.7, ease: [0.22, 1, 0.36, 1], delay },
});

export function Hero() {
  const { t, locale } = useLocale();

  return (
    <section
      id="top"
      className={cn(
        'relative isolate overflow-hidden',
        // Full-screen on desktop, generous on mobile — leaves room for hero
        // metrics without forcing a scroll on first paint at 1080p.
        'min-h-[100svh] pt-28 pb-20 sm:pt-32',
      )}
    >
      {/* Particle network background */}
      <div className="pointer-events-none absolute inset-0 -z-10">
        <ParticleCanvas />
        {/* Edge fade so particles don't fight section seams */}
        <div
          aria-hidden
          className="absolute inset-x-0 bottom-0 h-40 bg-gradient-to-b from-transparent to-base"
        />
      </div>

      <div className="mx-auto flex max-w-7xl flex-col items-center px-5 text-center sm:px-8">
        {/* Availability chip */}
        <motion.div {...fadeUp(0)} className="mb-7">
          <span className="chip">
            <span className="relative inline-flex h-2 w-2">
              <span className="absolute inset-0 animate-pulse-dot rounded-full bg-emerald" />
              <span className="relative inline-block h-2 w-2 rounded-full bg-emerald" />
            </span>
            {t.hero.availability}
          </span>
        </motion.div>

        {/* Eyebrow */}
        <motion.p
          {...fadeUp(0.08)}
          className="label-mono mb-6 inline-flex items-center gap-3 text-[clamp(0.65rem,1vw,0.75rem)]"
        >
          <span className="h-px w-10 bg-electric/60" aria-hidden />
          {t.hero.eyebrow}
          <span className="h-px w-10 bg-electric/60" aria-hidden />
        </motion.p>

        {/* Name */}
        <motion.h1
          {...fadeUp(0.15)}
          className={cn(
            'font-display text-balance text-[clamp(2.4rem,7vw,5.4rem)] font-extrabold leading-[1.02] tracking-tight text-white',
            locale === 'fa' && 'font-fa',
          )}
        >
          {t.hero.name}
        </motion.h1>

        {/* Headline */}
        <motion.p
          {...fadeUp(0.25)}
          className={cn(
            'mt-5 max-w-4xl text-balance text-[clamp(1.15rem,2.2vw,1.75rem)] font-medium leading-[1.25] text-slate-200',
          )}
        >
          {t.hero.headlineLead}{' '}
          <span className="gradient-text font-semibold">
            {t.hero.headlineAccent}
          </span>{' '}
          {t.hero.headlineTrail}
        </motion.p>

        {/* Role typewriter */}
        <motion.div
          {...fadeUp(0.35)}
          className="mt-5 flex items-center gap-3 font-mono text-[clamp(0.9rem,1.4vw,1.05rem)] uppercase tracking-[0.15em] text-slate-400"
        >
          <span className="h-px w-6 bg-slate-700" aria-hidden />
          <Typewriter words={t.hero.roles} />
          <span className="h-px w-6 bg-slate-700" aria-hidden />
        </motion.div>

        {/* Sub */}
        <motion.p
          {...fadeUp(0.42)}
          className="mt-7 max-w-2xl text-balance text-[clamp(0.95rem,1.4vw,1.08rem)] leading-relaxed text-slate-400"
        >
          {t.hero.sub}
        </motion.p>

        {/* CTAs */}
        <motion.div
          {...fadeUp(0.5)}
          className="mt-9 flex flex-wrap items-center justify-center gap-3"
        >
          <a href="#contact" className="btn-primary">
            {t.hero.ctaPrimary}
            <Arrow locale={locale} />
          </a>
          <a href="#services" className="btn-ghost">
            {t.hero.ctaSecondary}
          </a>
        </motion.div>

        {/* Metrics */}
        <motion.div
          {...fadeUp(0.6)}
          className="mt-16 grid w-full max-w-4xl grid-cols-2 gap-4 sm:grid-cols-4"
        >
          {t.hero.metrics.map((m, i) => (
            <div
              key={m.label}
              className="glass relative overflow-hidden px-5 py-5 text-start"
            >
              <span
                aria-hidden
                className="absolute inset-x-0 top-0 h-px bg-gradient-to-r from-transparent via-electric/50 to-transparent"
              />
              <div
                className={cn(
                  'font-display text-[clamp(1.6rem,3vw,2.25rem)] font-bold leading-none',
                  // Cycle the accent colors across the 4 tiles
                  [
                    'text-electric',
                    'text-violet',
                    'text-magenta',
                    'text-emerald',
                  ][i % 4],
                )}
              >
                <Counter value={m.value} locale={locale} />
              </div>
              <div className="mt-2 text-[0.78rem] leading-snug text-slate-400">
                {m.label}
              </div>
            </div>
          ))}
        </motion.div>

        {/* Scroll cue */}
        <motion.a
          href="#services"
          {...fadeUp(0.75)}
          aria-label={t.hero.scroll}
          className="mt-14 inline-flex flex-col items-center gap-2 text-slate-500 transition-colors hover:text-slate-200"
        >
          <span className="label-mono">{t.hero.scroll}</span>
          <span className="relative block h-9 w-5 rounded-full border border-slate-700">
            <span className="absolute left-1/2 top-1.5 inline-block h-1.5 w-0.5 -translate-x-1/2 animate-float-y rounded-full bg-electric" />
          </span>
        </motion.a>
      </div>
    </section>
  );
}

function Arrow({ locale }: { locale: 'fa' | 'en' }) {
  return (
    <svg
      viewBox="0 0 24 24"
      width="16"
      height="16"
      fill="none"
      stroke="currentColor"
      strokeWidth="2.4"
      strokeLinecap="round"
      strokeLinejoin="round"
      className={locale === 'fa' ? 'rotate-180' : ''}
      aria-hidden
    >
      <path d="M5 12 H19" />
      <path d="M13 6 L19 12 L13 18" />
    </svg>
  );
}