/* ==========================================================================
   Vectra IA Lab — Header y Footer (componentes compartidos)
   ========================================================================== */

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-borde);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  min-height: var(--header-h);
  padding-block: 0.5rem;
}

/* Logo horizontal oficial (SVG con tipografías en curvas) */
.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.logo__img {
  display: block;
  height: 52px;
  width: auto;
}
@media (max-width: 480px) {
  .logo__img { height: 44px; }
}

/* Navegación */
.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.nav__lista {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav__lista a {
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--color-azul-oscuro);
  padding: 0.4rem 0;
  position: relative;
}
.nav__lista a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--color-azul);
  transition: width var(--t-rapida);
}
.nav__lista a:hover,
.nav__lista a[aria-current="page"] { color: var(--color-azul); }
.nav__lista a:hover::after,
.nav__lista a[aria-current="page"]::after { width: 100%; }

.nav__cta { flex-shrink: 0; }

/* Botón hamburguesa (móvil) */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--color-azul-oscuro);
}
.nav-toggle svg { width: 28px; height: 28px; }

/* ---------- Responsive nav ---------- */
@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-borde);
    box-shadow: var(--sombra-hover);
    padding: var(--sp-2);
    transform: translateY(-120%);
    transition: transform var(--t-media);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav[data-abierto="true"] { transform: translateY(0); }
  .nav__lista {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .nav__lista li { margin: 0; }
  .nav__lista a {
    display: block;
    padding: 0.9rem 0.5rem;
    border-bottom: 1px solid var(--color-borde);
  }
  .nav__lista a::after { display: none; }
  .nav__cta { margin-top: var(--sp-2); }
  .nav__cta .btn { width: 100%; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-azul-oscuro);
  color: rgba(235, 235, 235, 0.85);
  padding-block: var(--sp-8) var(--sp-4);
  font-size: 0.95rem;
}
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--color-azul); text-decoration: underline; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: var(--sp-6);
}
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-4); }
}

.site-footer h4 {
  color: #fff;
  font-family: var(--font-titulo);
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin: 0 0 0.6rem; }

.footer-logo {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--sp-3);
}
/* Version negativa oficial del logo para el footer oscuro */
.logo__img--footer {
  height: 56px;
  width: auto;
}
.footer-desc { max-width: 42ch; }

.footer-contacto { list-style: none; padding: 0; margin: 0; }
.footer-contacto li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
}
.footer-contacto svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; color: var(--color-azul); }

.footer-cierre {
  margin-top: var(--sp-6);
  padding-top: var(--sp-3);
  border-top: 1px solid rgba(255,255,255,0.15);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-2);
  font-size: var(--fs-small);
}
.footer-cierre__legal { display: flex; gap: var(--sp-2); flex-wrap: wrap; }