/* Nav del sitio público. UNO para index, nosotros y ubicaciones.
   Sólo transform y opacity se animan; propiedades explícitas, nunca `all`.
   Umbrales: 640px (idioma y botones salen del menú), 1024px (enlaces). */
.kz-nav {
  --kz-ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(0,26,46,.9);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,207,2,.12);
  transition: background-color 200ms var(--kz-ease-out), border-color 200ms var(--kz-ease-out), box-shadow 200ms var(--kz-ease-out);
}
.kz-nav.scrolled {
  background: rgba(0,26,46,.98);
  border-bottom-color: rgba(255,207,2,.28);
  box-shadow: 0 4px 28px rgba(0,0,0,.35);
}
.kz-row {
  display: flex; align-items: center; gap: 1rem;
  height: 64px; padding-inline: 1.5rem; max-width: 1400px; margin: 0 auto;
}
.kz-logo { flex-shrink: 0; display: flex; align-items: center; gap: .5rem; text-decoration: none; }
.kz-logo img { height: 34px; filter: brightness(0) invert(1); }
.kz-logo-fb { display: none; font-family: 'Barlow Condensed', sans-serif; font-weight: 900; font-size: 1.4rem; color: #fff; letter-spacing: -.02em; }
.kz-logo-fb b { color: #FFCF02; font-weight: inherit; }

/* Enlaces (escritorio) */
.kz-links { display: none; list-style: none; margin: 0 0 0 .75rem; padding: 0; align-items: center; gap: 1.4rem; }
.kz-link {
  position: relative; color: rgba(255,255,255,.72);
  font-size: .875rem; font-weight: 500; text-decoration: none;
  padding: .35rem 0; white-space: nowrap;
  transition: color 160ms ease;
}
.kz-link::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: #FFCF02; border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform 200ms var(--kz-ease-out);
}
.kz-link[aria-current] { color: #fff; }
.kz-link[aria-current]::after { transform: scaleX(1); }
.kz-link:focus-visible { outline: 2px solid #FFCF02; outline-offset: 4px; border-radius: 2px; }

/* Acciones */
.kz-actions { margin-left: auto; display: flex; align-items: center; gap: .5rem; }

/* Idioma: control segmentado de texto, el pulgar se desliza */
.kz-lang {
  position: relative; display: none; align-items: center; flex-shrink: 0;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px; padding: 2px;
}
.kz-lang::before {
  content: ''; position: absolute; top: 2px; bottom: 2px; left: 2px; width: calc(50% - 2px);
  background: #FFCF02; border-radius: 6px;
  transition: transform 200ms var(--kz-ease-out);
}
.kz-lang[data-lang="en"]::before { transform: translateX(100%); }
.kz-lang button {
  position: relative; z-index: 1; appearance: none; border: 0; background: none;
  font: inherit; font-size: .7rem; font-weight: 700; letter-spacing: .06em;
  width: 2.6rem; padding: .3rem 0; border-radius: 6px; cursor: pointer;
  color: rgba(255,255,255,.55);
  transition: color 200ms ease;
}
.kz-lang[data-lang="es"] button[data-l="es"],
.kz-lang[data-lang="en"] button[data-l="en"] { color: #002f4a; }
.kz-lang button:focus-visible { outline: 2px solid #FFCF02; outline-offset: 2px; }

/* Botones: acusan el clic al apretar, no flotan en hover */
.kz-btn {
  display: none; align-items: center; gap: .4rem;
  padding: .5rem .95rem; border-radius: 8px;
  font-weight: 700; font-size: .8rem; text-decoration: none; white-space: nowrap;
  border: 1.5px solid transparent;
  transition: transform 160ms var(--kz-ease-out), background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}
.kz-btn:active { transform: scale(.97); }
.kz-btn:focus-visible { outline: 2px solid #FFCF02; outline-offset: 2px; }
.kz-btn svg { width: 14px; height: 14px; }
.kz-btn-portal { background: rgba(255,255,255,.92); color: #001a2e; }
.kz-btn-sem { background: rgba(255,107,53,.12); color: #FF7043; border-color: rgba(255,107,53,.4); }

/* Hamburguesa → X en 200ms */
.kz-ham {
  appearance: none; border: 0; background: none; cursor: pointer;
  display: flex; flex-direction: column; gap: 5px;
  padding: 6px; margin: 0 -6px 0 .25rem; border-radius: 8px;
  transition: transform 160ms var(--kz-ease-out);
}
.kz-ham:active { transform: scale(.94); }
.kz-ham:focus-visible { outline: 2px solid #FFCF02; }
.kz-ham span {
  display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px;
  transition: transform 200ms var(--kz-ease-out), opacity 150ms ease;
}
.kz-ham[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.kz-ham[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.kz-ham[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menú: entra en 200ms, sale en 150ms; los enlaces se escalonan sólo al abrir.
   Con `instant` (Escape) no hay transición: lo del teclado no se anima. */
.kz-menu {
  position: absolute; top: 100%; left: 0; right: 0;
  background: #001a2e; border-top: 1px solid rgba(255,255,255,.1);
  padding: .5rem 1.5rem 1.1rem;
  box-shadow: 0 16px 40px rgba(0,0,0,.35);
  opacity: 0; transform: translateY(-6px); visibility: hidden;
  transition: opacity 150ms ease, transform 150ms var(--kz-ease-out), visibility 0s linear 150ms;
}
.kz-menu.open {
  opacity: 1; transform: none; visibility: visible;
  transition: opacity 200ms ease, transform 200ms var(--kz-ease-out), visibility 0s;
}
.kz-menu.instant, .kz-menu.instant.open { transition: none; }
.kz-mlink {
  display: block; padding: .8rem 0; color: rgba(255,255,255,.78); text-decoration: none; font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,.08);
  opacity: 0; transform: translateY(-4px);
  transition: opacity 150ms ease, transform 150ms var(--kz-ease-out);
}
.kz-mlink[aria-current] { color: #FFCF02; }
.kz-menu.open .kz-mlink { opacity: 1; transform: none; transition: opacity 200ms ease, transform 200ms var(--kz-ease-out); }
.kz-menu.open .kz-mlink:nth-child(2) { transition-delay: 30ms; }
.kz-menu.open .kz-mlink:nth-child(3) { transition-delay: 60ms; }
.kz-menu.open .kz-mlink:nth-child(4) { transition-delay: 90ms; }
.kz-menu.instant .kz-mlink { transition: none; }
.kz-mrow { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem .5rem; align-items: center; padding-top: .9rem; }
.kz-mrow .kz-lang { display: inline-flex; grid-column: 1 / -1; justify-self: start; }
.kz-mrow .kz-btn { display: inline-flex; justify-content: center; padding-inline: .5rem; }
.kz-mrow .kz-btn-portal { background: rgba(0,73,117,.9); color: #fff; }

@media (hover: hover) and (pointer: fine) {
  .kz-link:hover { color: #fff; }
  .kz-link:hover::after { transform: scaleX(1); }
  .kz-btn-portal:hover { background: #fff; }
  .kz-btn-sem:hover { background: #FF6B35; color: #fff; border-color: #FF6B35; }
  .kz-mlink:hover { color: #fff; }
}

@media (min-width: 640px) {
  .kz-actions .kz-lang { display: inline-flex; }
  .kz-actions .kz-btn { display: inline-flex; }
  .kz-mrow { display: none; }
}

@media (min-width: 1024px) {
  .kz-links { display: flex; }
  .kz-ham { display: none; }
  .kz-menu { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .kz-menu, .kz-menu.open, .kz-mlink, .kz-menu.open .kz-mlink { transform: none; transition-duration: 120ms; transition-delay: 0s; }
  .kz-link::after, .kz-lang::before, .kz-ham span { transition: none; }
}