// ===== Componentes compartidos Ventratech =====

const { useState, useEffect } = React;

function Header({ currentPage, onNavigate }) {
  const links = [
    { id: 'home', label: 'Inicio' },
    { id: 'products', label: 'Productos' },
    { id: 'applications', label: 'Aplicaciones' },
    { id: 'about', label: 'Nosotros' },
    { id: 'distributors', label: 'Distribuidores' },
    { id: 'support', label: 'Soporte' },
    { id: 'contact', label: 'Contacto' },
  ];
  return (
    <header className="site-header" data-screen-label="Header">
      <div className="container header-inner">
        <a href="#home" className="brand-link" onClick={(e) => { e.preventDefault(); onNavigate('home'); }}>
          <img src="assets/logo_color.svg" alt="Ventratech" />
        </a>
        <nav className="nav-links">
          {links.map(l => (
            <a
              key={l.id}
              href={`#${l.id}`}
              className={currentPage === l.id ? 'active' : ''}
              onClick={(e) => { e.preventDefault(); onNavigate(l.id); }}
            >
              {l.label}
            </a>
          ))}
        </nav>
        <div className="header-cta">
          <a href="#contact" className="btn btn-primary" onClick={(e) => { e.preventDefault(); onNavigate('contact'); }}>
            <span className="btn-text">Cotizar</span>
            <span style={{display:'none'}} className="btn-icon">→</span>
          </a>
        </div>
      </div>
    </header>
  );
}

function Footer({ onNavigate }) {
  return (
    <footer className="site-footer" data-screen-label="Footer">
      <div className="container">
        <div className="footer-grid">
          <div className="footer-brand">
            <img src="assets/logo_white.svg" alt="Ventratech" />
            <p>Ventilación de alto rendimiento para HVAC e industria. Stock local en México con respaldo técnico especializado.</p>
          </div>
          <div className="footer-col">
            <h4>Productos</h4>
            <ul>
              {PRODUCTS.map(p => (
                <li key={p.id}><a href={`#product/${p.id}`} onClick={(e) => { e.preventDefault(); onNavigate('detail', p.id); }}>{p.model}</a></li>
              ))}
            </ul>
          </div>
          <div className="footer-col">
            <h4>Empresa</h4>
            <ul>
              <li><a href="#about" onClick={(e) => { e.preventDefault(); onNavigate('about'); }}>Nosotros</a></li>
              <li><a href="#applications" onClick={(e) => { e.preventDefault(); onNavigate('applications'); }}>Aplicaciones</a></li>
              <li><a href="#distributors" onClick={(e) => { e.preventDefault(); onNavigate('distributors'); }}>Distribuidores</a></li>
              <li><a href="#support" onClick={(e) => { e.preventDefault(); onNavigate('support'); }}>Soporte</a></li>
              <li><a href="#contact" onClick={(e) => { e.preventDefault(); onNavigate('contact'); }}>Contacto</a></li>
            </ul>
          </div>
          <div className="footer-col">
            <h4>Contacto</h4>
            <ul>
              <li><a href="tel:+529841342829">+52 984 134 2829</a></li>
              <li><a href="mailto:ventas@ventratech.mx">ventas@ventratech.mx</a></li>
              <li>Tulum, Quintana Roo, MX</li>
              <li>Lun–Vie · 9:00 a 18:00</li>
            </ul>
          </div>
        </div>
        <div className="footer-bottom">
          <div>© {new Date().getFullYear()} Ventratech México. Todos los derechos reservados.</div>
          <div>Ventilación · HVAC · Industria</div>
        </div>
      </div>
    </footer>
  );
}

function WhatsAppFab() {
  return (
    <a className="wa-fab" href="https://wa.me/529841342829?text=Hola%2C%20me%20interesa%20cotizar%20un%20ventilador%20Ventratech" target="_blank" rel="noopener" title="WhatsApp">
      <svg viewBox="0 0 24 24" fill="currentColor"><path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.15-.174.2-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.71.306 1.263.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.002-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413Z"/></svg>
    </a>
  );
}

function ProductCard({ p, onClick }) {
  return (
    <a href={`#product/${p.id}`} className="product-card" onClick={(e) => { e.preventDefault(); onClick(p.id); }}>
      <div className="ph-image" style={{background:'#F5F7FB'}}>
        {p.img ? <img src={p.img} alt={p.model} style={{width:'100%',height:'100%',objectFit:'contain',padding:'24px'}} /> : <div className="ph-content"><span className="ph-icon">⌬</span><div>Foto Producto<br/>{p.model}</div></div>}
      </div>
      <div className="pc-body">
        <div className="pc-model">{p.model}</div>
        <h3>Centrífugo {p.id}</h3>
        <div className="pc-desc">{p.desc.split('.')[0]}.</div>
        <div className="pc-specs">
          <div>
            <div className="label">Caudal</div>
            <div className="value">{p.caudal} m³/h</div>
          </div>
          <div>
            <div className="label">Presión</div>
            <div className="value">{p.presion} Pa</div>
          </div>
          <div>
            <div className="label">Potencia</div>
            <div className="value">{p.potencia} kW</div>
          </div>
          <div>
            <div className="label">Eficiencia</div>
            <div className="value">{p.eficiencia} %</div>
          </div>
        </div>
        <div className="pc-cta">
          <span>Ver detalles</span>
          <span>→</span>
        </div>
      </div>
    </a>
  );
}

function Breadcrumb({ items }) {
  return (
    <nav className="breadcrumb container">
      {items.map((it, i) => (
        <React.Fragment key={i}>
          {i > 0 && <span className="sep">/</span>}
          {it.onClick ? (
            <a href="#" onClick={(e) => { e.preventDefault(); it.onClick(); }}>{it.label}</a>
          ) : (
            <span>{it.label}</span>
          )}
        </React.Fragment>
      ))}
    </nav>
  );
}

function CTAStrip({ title, subtitle, ctaLabel, onCta }) {
  return (
    <div className="cta-strip">
      <div>
        <h2>{title}</h2>
        <p>{subtitle}</p>
      </div>
      <a href="#contact" className="btn btn-ghost btn-arrow" onClick={(e) => { e.preventDefault(); onCta(); }}>{ctaLabel}</a>
    </div>
  );
}

Object.assign(window, { Header, Footer, WhatsAppFab, ProductCard, Breadcrumb, CTAStrip });