/* ==========================================================================
   Header — logo, barra de correo + redes y navegación
   ========================================================================== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1050;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
  background: linear-gradient(180deg, rgba(8, 16, 26, .72) 0%, rgba(8, 16, 26, .30) 62%, rgba(8, 16, 26, 0) 100%);
}

.site-header.is-stuck {
  background: rgba(9, 18, 30, .96);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 28px rgba(6, 12, 20, .35);
}

.navbar-gbm__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding-block: .55rem;
}

/* ---------- Logotipo ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand__img {
  width: var(--logo-w);
  min-width: 128px;
  height: auto;
  display: block;
}

/* ---------- Columna derecha ---------- */
.header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .5rem;
  min-width: 0;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: .8rem;
  min-width: 0;
}

.topbar__mail {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  color: rgba(255, 255, 255, .92);
  letter-spacing: .01em;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar__mail:hover {
  color: var(--gbm-orange-300);
}

.topbar__social {
  display: flex;
  align-items: center;
  gap: 3px;
  background: rgba(255, 255, 255, .22);
  border: 1px solid rgba(255, 255, 255, .3);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-xs);
  padding: 4px 6px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .18);
}

.topbar__social a {
  width: 27px;
  height: 27px;
  border-radius: 4px;
  display: grid;
  place-items: center;
  color: #fff;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.topbar__social a:hover {
  background: var(--gbm-orange);
  color: #fff;
}

.topbar__social svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ---------- Hamburguesa ---------- */
.nav-toggle {
  display: none;
  width: 46px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, .3);
  background: transparent;
  border-radius: var(--radius-xs);
  cursor: pointer;
  padding: 0;
  place-items: center;
  color: #fff;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: all var(--dur) var(--ease);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: all var(--dur) var(--ease);
}

.nav-toggle span::before {
  top: -7px;
}

.nav-toggle span::after {
  top: 7px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ---------- Navegación ---------- */
.mainnav__list {
  display: flex;
  align-items: center;
  gap: clamp(.1rem, -.35rem + .8vw, .5rem);
}

.mainnav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .42rem .6rem;
  border-radius: var(--radius-xs);
  font-size: clamp(.72rem, .54rem + .26vw, .87rem);
  font-weight: 600;
  letter-spacing: .045em;
  text-transform: uppercase;
  color: #fff;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space: nowrap;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

.mainnav__link:hover,
.mainnav__link:focus-visible {
  background: rgba(255, 255, 255, .16);
}

.mainnav__item.is-active>.mainnav__link {
  background: rgba(255, 255, 255, .22);
  color: #fff;
}

.mainnav__caret {
  width: 8px;
  height: 8px;
  fill: currentColor;
  transition: transform var(--dur) var(--ease);
}

/* ---------- Submenú ---------- */
.mainnav__item--has-sub {
  position: relative;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 10px);
  min-width: 290px;
  padding: .4rem;
  padding-top: calc(.4rem + 14px);
  /* puente invisible: cubre el gap */
  margin-top: 0;
  /* elimina el gap real */
  background: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--gbm-orange);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
  z-index: 20;
}

.mainnav__item--has-sub:hover>.submenu,
.mainnav__item--has-sub:focus-within>.submenu,
.mainnav__item--has-sub.is-open>.submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.mainnav__item--has-sub:hover .mainnav__caret,
.mainnav__item--has-sub.is-open .mainnav__caret {
  transform: rotate(180deg);
}

.submenu a {
  display: block;
  padding: .7rem .9rem;
  border-radius: var(--radius-xs);
  font-size: .875rem;
  font-weight: 600;
  color: var(--gbm-ink);
  line-height: 1.35;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.submenu a:hover,
.submenu a:focus-visible {
  background: var(--gbm-orange-soft);
  color: var(--gbm-orange);
  padding-left: 1.2rem;
}

/* ---------- Móvil ---------- */
@media (max-width: 1199.98px) {
  .nav-toggle {
    display: grid;
  }

  .header-right {
    flex-direction: row;
    align-items: center;
    gap: .75rem;
  }

  .mainnav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(9, 18, 30, .98);
    backdrop-filter: blur(8px);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--dur) var(--ease);
    border-top: 1px solid rgba(255, 255, 255, .1);
  }

  .mainnav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .mainnav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem var(--gutter) 1.5rem;
  }

  .mainnav__item {
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }

  .mainnav__link {
    width: 100%;
    justify-content: space-between;
    padding: 1rem .2rem;
    font-size: .9rem;
    border-radius: 0;
  }

  .submenu {
    position: static;
    transform: none !important;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    background: transparent;
    border-top: 0;
    min-width: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height .4s var(--ease), padding .4s var(--ease);
  }

  .mainnav__item--has-sub.is-open>.submenu {
    max-height: 340px;
    padding: 0 0 .6rem;
  }

  .submenu a {
    color: rgba(255, 255, 255, .82);
    padding-left: 1rem;
  }

  .submenu a:hover,
  .submenu a:focus-visible {
    background: rgba(249, 82, 40, .18);
    color: #fff;
  }
}

@media (max-width: 767.98px) {
  .topbar__mail {
    display: none;
  }
}

body.nav-open {
  overflow: hidden;
}