/* ===================================================================
   NAVIGATION UNIFICADA - AlerceGRC
   Aplicar a todas las páginas del sitio
   =================================================================== */

/* Variables heredadas del sitio */
:root {
  --nav-height: 80px;
  --dropdown-shadow: 0 4px 20px rgba(18, 54, 42, 0.12);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === ESTRUCTURA PRINCIPAL === */
header .bar {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1rem 0;
  position: relative;
}

header .logo {
  flex-shrink: 0;
}

header .navlinks {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  margin-left: 2rem;
}

/* === ITEMS DE NAVEGACIÓN === */
.nav-item {
  position: relative;
  list-style: none;
}

.nav-item > a,
.nav-item > button {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: white;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-item > a:hover,
.nav-item > button:hover {
  color: #e0f2e9;
}

/* Indicador de dropdown */
.nav-item > a::after,
.nav-item > button::after {
  content: '▾';
  margin-left: 0.35rem;
  font-size: 0.85em;
  opacity: 0.7;
}

.nav-item.no-dropdown > a::after {
  display: none;
}

/* === DROPDOWN BÁSICO === */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: white;
  border: 1px solid var(--hueso);
  border-radius: 12px;
  box-shadow: var(--dropdown-shadow);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition);
  z-index: 1000;
  margin-top: 0.5rem;
}

.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: 0.7rem 1.25rem;
  font-size: 0.9rem;
  color: var(--tinta);
  transition: background-color var(--transition), color var(--transition);
}

.dropdown-menu a:hover {
  background-color: var(--marfil);
  color: var(--musgo);
}

/* === MEGA MENU PARA SECTORES === */
.dropdown-mega {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  min-width: 580px;
  max-width: 650px;
  background: white;
  border: 1px solid var(--hueso);
  border-radius: 16px;
  box-shadow: var(--dropdown-shadow);
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 1000;
  margin-top: 0.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.nav-item:hover .dropdown-mega,
.nav-item:focus-within .dropdown-mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-column h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--niebla);
  margin-bottom: 1rem;
  font-family: 'Inter', sans-serif;
}

.mega-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mega-column li {
  margin-bottom: 0.25rem;
}

.mega-column a {
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  color: var(--tinta);
  border-radius: 8px;
  transition: background-color var(--transition), color var(--transition);
}

.mega-column a:hover {
  background-color: var(--marfil);
  color: var(--musgo);
}

/* === BOTONES: texto siempre centrado (aplica a todas las páginas) ===
   .btn es inline-flex sin justify-content: al estirarse (ancho completo, columnas
   móviles) el texto quedaba pegado a la izquierda. */
.btn,
a.btn,
button.btn {
  justify-content: center;
  text-align: center;
}

/* === NAV ACTIONS (idiomas + CTAs) === */
header .nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

header .nav-cta .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
}

.lang {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.lang a {
  padding: 0.35rem 0.5rem;
  color: white;
  transition: color var(--transition);
}

.lang a:hover,
.lang a[aria-current="page"] {
  color: #e0f2e9;
}

.lang .sep {
  color: rgba(255, 255, 255, 0.5);
  user-select: none;
}

/* === RESPONSIVE - MOBILE === */
@media (max-width: 968px) {
  /* Ocultar nav desktop */
  header .navlinks {
    display: none;
  }

  /* El menú mobile ya existe en el HTML original */
  /* Solo ajustamos si es necesario */

  .dropdown-menu,
  .dropdown-mega {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0;
    margin-top: 0.5rem;
    background: transparent;
  }

  .dropdown-mega {
    display: block;
    min-width: 0;
    max-width: 100%;
    padding: 0;
  }

  .mega-column {
    margin-bottom: 1.5rem;
  }

  .mega-column h4 {
    font-size: 0.75rem;
  }
}

@media (max-width: 640px) {
  header .bar {
    gap: 1rem;
  }

  header .nav-cta {
    gap: 0.5rem;
  }

  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}

/* === ESTADOS ACTIVOS === */
.nav-item a.active,
.dropdown-menu a.active {
  color: white;
  font-weight: 600;
}

/* === ACCESIBILIDAD === */
.nav-item:focus-within > a,
.nav-item:focus-within > button {
  outline: 2px solid var(--brote);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Asegurar que los dropdowns sean accesibles con teclado */
.dropdown-menu a:focus,
.mega-column a:focus {
  outline: 2px solid var(--brote);
  outline-offset: -2px;
  background-color: var(--marfil);
}