/* =========================================================================
   enlazado.css — bloques de enlazado interno para el ecosistema iLEAN
   -------------------------------------------------------------------------
   Hoja ADITIVA: no redefine ni una sola regla de ilean.ai.css. Se carga
   despues de la principal y solo anade clases nuevas con prefijos propios
   (.nav-mega, .rel-, .idx-, .hub-).

   Principio de diseno: ningun bloque de este fichero puede desplazar el hero
   ni un pixel. El megamenu es una capa absoluta dentro de la cabecera sticky
   (que conserva su --header-h intacto) y el resto de bloques viven al pie de
   la pagina, antes del CTA final.
   ========================================================================= */

/* ---- 1. Megamenu de cabecera ------------------------------------------ */
/* La cabecera nav.site ya es position:sticky, asi que sirve de bloque
   contenedor: el panel se posiciona contra ella y flota sobre el contenido. */

.nav-mega { position: static; display: inline-flex; align-items: center; }

.nav-mega-btn {
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  opacity: .78;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  line-height: 1;
}
.nav-mega-btn:hover,
.nav-mega-btn[aria-expanded="true"] { opacity: 1; }

/* Punta del desplegable: gira al abrir, sin mover nada de sitio. */
.nav-mega-btn::after {
  content: "";
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform .18s ease;
}
.nav-mega-btn[aria-expanded="true"]::after { transform: translateY(1px) rotate(-135deg); }

.nav-mega-panel {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-hover);
  padding: 34px 0 30px;
  z-index: 39;                 /* justo por debajo de nav.site (40) */
  animation: navMegaIn .16s ease-out;
}
@keyframes navMegaIn { from { opacity: 0; transform: translateY(-6px) } to { opacity: 1; transform: none } }
@media (prefers-reduced-motion: reduce) {
  .nav-mega-panel { animation: none }
  .nav-mega-btn::after { transition: none }
}
.nav-mega-panel[hidden] { display: none; }

.nav-mega-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.nav-mega-col > .nav-mega-tit {
  display: block;
  font-family: var(--font-display);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--steel);
  font-weight: 700;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.nav-mega-col ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 22px; }
.nav-mega-col li { break-inside: avoid; margin-bottom: 3px; }
.nav-mega-col a {
  display: block;
  padding: 5px 8px;
  margin-left: -8px;
  border-radius: var(--r-sm);
  color: var(--ink);
  opacity: .82;
  font-size: .93rem;
  line-height: 1.35;
  text-decoration: none;
}
.nav-mega-col a:hover { opacity: 1; background: var(--paper-soft); color: var(--navy); text-decoration: none; }

.nav-mega-foot {
  max-width: var(--maxw);
  margin: 24px auto 0;
  padding: 16px 24px 0;
  border-top: 1px solid var(--border);
  font-size: .92rem;
}
.nav-mega-foot a { color: var(--navy); font-weight: 600; text-decoration: none; }
.nav-mega-foot a:hover { text-decoration: underline; }

/* En movil la cabecera original oculta los enlaces (.navlinks a:not(.btn)).
   El boton es un <button>, sobrevive a esa regla, y el panel pasa a ser una
   columna con scroll propio en lugar de una rejilla de tres. */
@media (max-width: 820px) {
  .nav-mega-inner { grid-template-columns: 1fr; gap: 22px; }
  .nav-mega-col ul { columns: 1; }
  .nav-mega-panel { max-height: calc(100vh - var(--header-h)); overflow-y: auto; padding: 22px 0; }
}

/* ---- 2. Casos relacionados (pie de cada landing) ---------------------- */

.rel-cases { padding: clamp(48px, 6vw, 72px) 0; background: var(--paper-soft); }
.rel-cases .wrap { max-width: var(--maxw); }
.rel-cases .kick {
  font-family: var(--font-display);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--steel); font-weight: 700;
}
.rel-cases h2 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); margin: 8px 0 22px; color: var(--navy); }

.rel-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
@media (max-width: 880px) { .rel-grid { grid-template-columns: repeat(2, 1fr) } }
@media (max-width: 520px) { .rel-grid { grid-template-columns: 1fr } }

.rel-grid a {
  display: flex; flex-direction: column; gap: 6px; height: 100%;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  color: var(--ink);
  text-decoration: none;
  transition: .18s;
}
.rel-grid a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--navy-2);
  text-decoration: none;
}
.rel-t { font-weight: 600; color: var(--navy); font-size: 1.02rem; line-height: 1.35; }
.rel-d { font-size: .9rem; color: var(--muted); line-height: 1.5; }

.rel-more { margin-top: 20px; font-size: .95rem; }
.rel-more a { color: var(--navy); font-weight: 600; font-family: var(--font-display); text-decoration: none; }
.rel-more a:hover { text-decoration: underline; }

/* ---- 3. Indice completo (pie de cada hub) ----------------------------- */

.idx-all { padding: clamp(48px, 6vw, 76px) 0; background: var(--paper); border-top: 1px solid var(--border); }
.idx-all .wrap { max-width: var(--maxw); }
.idx-all .kick {
  font-family: var(--font-display);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--steel); font-weight: 700;
}
.idx-all h2 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); margin: 8px 0 6px; color: var(--navy); }
.idx-all > .wrap > p { color: var(--muted); margin: 0 0 22px; max-width: 70ch; font-size: 1rem; }

.idx-group { margin-bottom: 26px; }
.idx-group > h3 {
  font-family: var(--font-display);
  font-size: .82rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--steel); font-weight: 700;
  padding-bottom: 8px; margin: 0 0 10px;
  border-bottom: 1px solid var(--border);
}
.idx-cols { list-style: none; margin: 0; padding: 0; columns: 3; column-gap: 30px; }
@media (max-width: 900px) { .idx-cols { columns: 2 } }
@media (max-width: 560px) { .idx-cols { columns: 1 } }

.idx-cols li { break-inside: avoid; margin-bottom: 2px; }
.idx-cols a {
  display: block;
  padding: 6px 9px; margin-left: -9px;
  border-radius: var(--r-sm);
  color: var(--ink); opacity: .85;
  font-size: .94rem; line-height: 1.4;
  text-decoration: none;
}
.idx-cols a:hover { opacity: 1; background: var(--white); color: var(--navy); text-decoration: none; }

/* ---- 4. Rejilla de hubs para la home ---------------------------------- */

.hub-band { padding: clamp(56px, 7vw, 92px) 0; background: var(--paper-soft); }
.hub-band .wrap { max-width: var(--maxw); }
.hub-band .kick {
  font-family: var(--font-display);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--steel); font-weight: 700;
}
.hub-band h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 8px 0 8px; color: var(--navy); }
.hub-band > .wrap > p { color: var(--muted); max-width: 70ch; margin: 0 0 28px; font-size: 1.04rem; }

.hub-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 880px) { .hub-grid { grid-template-columns: repeat(2, 1fr) } }
@media (max-width: 520px) { .hub-grid { grid-template-columns: 1fr } }

.hub-grid a {
  display: flex; flex-direction: column; gap: 6px; height: 100%;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px 22px;
  color: var(--ink);
  text-decoration: none;
  transition: .18s;
}
.hub-grid a:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-hover);
  border-color: var(--navy-2); text-decoration: none;
}
.hub-n { font-family: var(--font-display); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); font-weight: 700; }
.hub-h { color: var(--navy); font-size: 1.16rem; font-weight: 600; line-height: 1.3; }
.hub-p { font-size: .93rem; color: var(--muted); line-height: 1.5; margin: 0; }

/* ---- 5. Enlaces de hub en el pie -------------------------------------- */

.foot-hubs {
  border-top: 1px solid rgba(255,255,255,.14);
  margin-top: 26px; padding-top: 22px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
@media (max-width: 700px) { .foot-hubs { grid-template-columns: 1fr; gap: 16px } }
.foot-hubs h4 {
  font-family: var(--font-display);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--on-dark-mut); font-weight: 700; margin: 0 0 8px;
}
.foot-hubs ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 18px; }
@media (max-width: 700px) { .foot-hubs ul { columns: 2 } }
.foot-hubs li { break-inside: avoid; }
.foot-hubs a { color: var(--on-dark-mut); font-size: .88rem; line-height: 1.85; text-decoration: none; }
.foot-hubs a:hover { color: #fff; text-decoration: underline; }