/* ==========================================================================
   COMPONENTE: NAVEGACIÓN RESPONSIVE Y MENÚ ACCESIBLE
   Construcciones JGP2410 C.A.
   ========================================================================== */

/* --- Contenedor de Navegación --- */
.nav {
  display: flex;
  align-items: center;
}

/* ==========================================================================
   ESTILOS DE ESCRITORIO (Desktop >= 1024px)
   ========================================================================== */

@media (min-width: 1024px) {
  /* Cabecera móvil jamás visible en desktop */
  .nav__mobile-header {
    display: none !important;
  }

  .nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
  }

  .nav__item {
    position: relative;
  }

  .nav__link,
  .nav__dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-deep-blue);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
  }

  .nav__link:hover,
  .nav__dropdown-toggle:hover {
    color: var(--color-primary-blue);
    background-color: var(--color-gray-light);
  }

  /* Estado Activo */
  .nav__link.is-active,
  .nav__link[aria-current="page"],
  .nav__dropdown-toggle.is-active,
  .nav__dropdown-toggle[aria-current="page"] {
    color: var(--color-primary-blue);
    position: relative;
  }

  .nav__link.is-active::after,
  .nav__link[aria-current="page"]::after,
  .nav__dropdown-toggle.is-active::after,
  .nav__dropdown-toggle[aria-current="page"]::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 14px;
    right: 14px;
    height: 3px;
    background-color: var(--color-yellow);
    border-radius: var(--radius-sm);
  }

  /* --- Desplegable de Servicios (Desktop) --- */
  .nav__dropdown-toggle svg {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
  }

  .nav__item--dropdown[data-open="true"] .nav__dropdown-toggle svg,
  .nav__dropdown-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
  }

  .nav__dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 260px;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    display: none;
    flex-direction: column;
    gap: 2px;
    z-index: var(--z-dropdown);
  }

  /* El desplegable se abre por estado activo de JS o por hover accesible */
  .nav__item--dropdown[data-open="true"] .nav__dropdown,
  .nav__item--dropdown:focus-within .nav__dropdown,
  .nav__dropdown-toggle[aria-expanded="true"] + .nav__dropdown {
    display: flex;
  }

  .nav__dropdown-link {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-dark);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
  }

  .nav__dropdown-link:hover,
  .nav__dropdown-link:focus-visible {
    background-color: var(--color-gray-light);
    color: var(--color-primary-blue);
  }

  .nav__dropdown-link.is-active {
    background-color: rgba(11, 42, 111, 0.08);
    color: var(--color-primary-blue);
    font-weight: var(--font-weight-bold);
  }

  /* Ocultar botón hamburguesa en desktop */
  .nav-toggle {
    display: none;
  }
}

/* ==========================================================================
   ESTILOS MÓVILES (Mobile / Tablet < 1024px)
   ========================================================================== */

@media (max-width: 1023px) {
  /* Al abrir el menú móvil, asegurar que la cabecera completa se eleve */
  body.menu-open .header {
    z-index: var(--z-mobile-nav);
  }

  /* Botón Hamburguesa */
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 10px;
    background-color: var(--color-gray-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid var(--color-gray-border);
    position: relative;
    z-index: 10;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
  }

  .nav-toggle:hover {
    background-color: #E5E7EB;
    border-color: #D1D5DB;
  }

  /* 3 barras del icono hamburguesa */
  .nav-toggle__bar {
    width: 22px;
    height: 2px;
    background-color: var(--color-deep-blue);
    border-radius: 2px;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .nav-toggle__bar + .nav-toggle__bar {
    margin-top: 5px;
  }

  /* Animación a 'X' cuando el menú está abierto */
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Panel Deslizable Móvil */
  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(85vw, 360px);
    background-color: var(--color-white);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.25);
    padding: var(--space-6) var(--space-5) var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    overflow-y: auto;
    z-index: var(--z-mobile-nav);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    visibility: hidden;
    list-style: none;
    margin: 0;
  }

  .nav__menu.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  /* Cabecera del panel móvil (botón de cerrar alineado a la derecha) */
  .nav__mobile-header {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-gray-border);
  }

  .nav__mobile-title {
    display: none !important;
  }

  .nav__mobile-close {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-light);
    border-radius: var(--radius-sm);
    color: var(--color-gray-dark);
  }

  .nav__link,
  .nav__dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 14px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    color: var(--color-deep-blue);
    border-radius: var(--radius-sm);
    border-bottom: 1px solid #F3F4F6;
  }

  .nav__link:hover,
  .nav__dropdown-toggle:hover {
    background-color: var(--color-gray-light);
    color: var(--color-primary-blue);
  }

  .nav__link.is-active,
  .nav__link[aria-current="page"],
  .nav__dropdown-toggle.is-active,
  .nav__dropdown-toggle[aria-current="page"] {
    background-color: rgba(11, 42, 111, 0.08);
    color: var(--color-primary-blue);
    border-left: 4px solid var(--color-yellow);
  }

  /* Desplegable móvil (acordeón expandible) */
  .nav__dropdown {
    display: none;
    flex-direction: column;
    gap: 4px;
    background-color: var(--color-gray-light);
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    margin-block: 4px var(--space-2);
    margin-left: var(--space-2);
  }

  .nav__item--dropdown[data-open="true"] .nav__dropdown,
  .nav__dropdown-toggle[aria-expanded="true"] + .nav__dropdown {
    display: flex;
  }

  .nav__dropdown-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
  }

  .nav__item--dropdown[data-open="true"] .nav__dropdown-toggle svg,
  .nav__dropdown-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
  }

  .nav__dropdown-link {
    padding: 10px 12px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-dark);
    border-radius: var(--radius-sm);
  }

  .nav__dropdown-link:hover {
    background-color: #E5E7EB;
    color: var(--color-primary-blue);
  }

  .nav__dropdown-link.is-active {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-blue);
    background-color: rgba(11, 42, 111, 0.08);
    border-left: 3px solid var(--color-yellow);
    padding-left: 10px;
  }

  /* Telón de fondo (Backdrop) */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(8, 29, 77, 0.6);
    backdrop-filter: blur(2px);
    z-index: calc(var(--z-mobile-nav) - 1);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .nav-backdrop.is-visible {
    opacity: 1;
    visibility: visible;
  }
}