/* ============================================================
   Kronex Pro — cabecera y pie compartidos por todo el sitio.
   Namespace kx- para no chocar con los estilos de cada página.
   ============================================================ */
:root{
  --kx-bg:#020617; --kx-surface:#0F172A; --kx-border:#334155;
  --kx-cyan:#00D1FF; --kx-cyan-hover:#00B8E6;
  --kx-white:#F8FAFC; --kx-muted:#94A3B8; --kx-gray:#CBD5E1;
}
.kx-header,.kx-footer{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;box-sizing:border-box}
.kx-header *,.kx-footer *{box-sizing:border-box}

/* ── CABECERA ── */
.kx-header{
  position:sticky;top:0;left:0;width:100%;z-index:1000;
  background:rgba(2,6,23,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--kx-border);
  transition:background .3s ease,box-shadow .3s ease;
}
.kx-header.is-scrolled{background:rgba(2,6,23,.97);box-shadow:0 4px 20px rgba(0,0,0,.5)}
.kx-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.kx-logo{display:flex;align-items:center;text-decoration:none;flex-shrink:0}
.kx-logo img{height:38px;width:auto;display:block}
.kx-nav{display:flex;gap:2px}
.kx-nav a{color:var(--kx-muted);font-size:.92rem;font-weight:500;text-decoration:none;padding:8px 12px;border-radius:6px;white-space:nowrap;transition:color .2s}
.kx-nav a:hover{color:var(--kx-white)}
.kx-nav a[aria-current="page"]{color:var(--kx-white);font-weight:600}
.kx-ctas{display:flex;align-items:center;gap:16px}
.kx-login{color:var(--kx-gray);font-size:.92rem;font-weight:600;text-decoration:none;white-space:nowrap;transition:color .2s}
.kx-login:hover{color:var(--kx-cyan)}
.kx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--kx-cyan);color:#000;font-weight:700;font-size:.92rem;line-height:1.25;
  padding:11px 20px;border-radius:10px;text-decoration:none;white-space:nowrap;
  box-shadow:0 4px 14px rgba(0,209,255,.25);transition:background .2s,transform .2s,box-shadow .2s
}
.kx-btn:hover{background:var(--kx-cyan-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,209,255,.4)}
.kx-burger{display:none;background:none;border:none;color:var(--kx-white);cursor:pointer;padding:8px;line-height:0}
.kx-burger svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.kx-mobile{display:none;flex-direction:column;gap:4px;background:var(--kx-surface);padding:16px 24px 24px;border-bottom:1px solid var(--kx-border);max-height:calc(100vh - 76px);overflow-y:auto}
.kx-mobile.open{display:flex}
.kx-mobile a{color:var(--kx-white);padding:13px 16px;border-radius:8px;text-decoration:none;font-weight:500}
.kx-mobile a:hover{background:rgba(255,255,255,.05)}
.kx-mobile .kx-btn{margin-top:10px;padding:15px 20px;font-size:1rem}
.kx-header a:focus-visible,.kx-footer a:focus-visible,.kx-burger:focus-visible{outline:3px solid var(--kx-cyan);outline-offset:3px;border-radius:4px}

@media (max-width:980px){
  .kx-nav,.kx-ctas{display:none}
  .kx-burger{display:block}
}
@media (max-width:400px){
  .kx-inner{padding:0 14px;gap:8px}
  .kx-logo img{height:32px}
}

/* ── PIE ── */
.kx-footer{background:#000;border-top:1px solid var(--kx-border);padding:72px 0 36px;color:var(--kx-muted)}
.kx-fwrap{max-width:1200px;margin:0 auto;padding:0 24px}
.kx-fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;margin-bottom:48px}
.kx-fbrand img{height:38px;margin-bottom:18px;display:block}
.kx-fbrand p{font-size:.9rem;max-width:320px;line-height:1.6;margin:0 0 20px}
.kx-fcontact{display:flex;flex-direction:column;gap:10px}
.kx-footer a{color:var(--kx-muted);text-decoration:none;font-size:.89rem;transition:color .2s}
.kx-footer a:hover{color:var(--kx-cyan)}
.kx-fcol h2{font-size:.93rem;margin:0 0 18px;color:var(--kx-white);font-weight:600}
.kx-fcol a{display:block;margin-bottom:11px}
.kx-fsocial{display:flex;gap:14px;margin-top:20px}
.kx-fbottom{border-top:1px solid var(--kx-border);padding-top:26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem}
@media (max-width:980px){ .kx-fgrid{grid-template-columns:1fr 1fr;row-gap:32px} }
@media (max-width:768px){ .kx-fgrid{grid-template-columns:1fr;gap:32px} .kx-footer{padding:56px 0 32px} }

/* ── WhatsApp flotante ── */
.kx-wa{position:fixed;bottom:28px;right:24px;z-index:200;background:#25D366;color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(37,211,102,.35);transition:transform .2s}
.kx-wa:hover{transform:scale(1.1)}
.kx-wa svg{width:27px;height:27px;fill:currentColor}
@media (max-width:768px){ .kx-wa{bottom:20px;width:50px;height:50px} .kx-wa svg{width:23px;height:23px} }
@media (prefers-reduced-motion:reduce){ .kx-header,.kx-btn,.kx-wa{transition:none} .kx-btn:hover,.kx-wa:hover{transform:none} }

/* ── ACCESIBILIDAD ── */
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:3px solid var(--kx-cyan); outline-offset:3px; border-radius:6px;
}
/* En pantallas táctiles, ningún destino de navegación por debajo de 44 px */
@media (pointer:coarse){
  .kx-nav a,.kx-mobile a,.kx-footer a,.kx-login{min-height:44px;display:flex;align-items:center}
  .kx-fcol a{padding:4px 0}
  .kx-fsocial a{min-width:44px}
}