/* ==========================================================================
   LAYOUT.CSS
   Header y footer compartidos del sitio (Fase 2)
   Requiere base.css y components.css cargados antes.
   ==========================================================================
   Índice:
     1. Header / navegación (desktop + móvil + dropdown)
     2. Footer (sedes, servicios, legal, redes, copyright)
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. HEADER / NAVEGACIÓN
   --------------------------------------------------------------------------
   Fijo y transparente sobre el hero fotográfico; se vuelve sólido (navy +
   blur) al hacer scroll vía .site-header--solid (activada por js/nav.js).
   Como el header ya no ocupa espacio en el flujo del documento, cada hero de
   página debe reservar su propio padding-top (ver css de cada página).
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: transparent;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header--solid {
  background-color: rgba(28, 23, 18, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}

.site-header__inner {
  justify-content: space-between;
  padding-block: var(--space-4);
}

/* --- Logo --- */

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: #fff;
}

/* Ícono de equipo: tres figuras estilizadas (cabeza + cuerpo con hombro
   curvo y torso cónico, no círculo+píldora genérico) superpuestas — dos
   atrás (bronce y verde azulado, cada una una disciplina) y una al
   frente, más grande, en color paper con contorno de tinta. Colores
   fijos (no currentColor): el ícono no depende del contexto claro/oscuro. */
.logo__mark .fig-a {
  fill: var(--color-accent-600);
}

.logo__mark .fig-b {
  fill: var(--color-team-teal);
}

.logo__mark .fig-front {
  fill: var(--color-neutral-50);
  stroke: var(--color-primary-900);
  stroke-width: 2.2;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: var(--leading-tight);
}

.logo__name {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-2xl);
  letter-spacing: -0.015em;
}

.logo__tagline {
  display: none;
  margin-top: 3px;
  padding-top: 3px;
  border-top: 1px solid rgba(212, 178, 116, 0.45);
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (min-width: 480px) {
  .logo__tagline {
    display: block;
  }
}

/* --- Botón hamburguesa (solo visible en móvil) --- */

.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  position: relative;
}

.nav__toggle:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

/* Icono de 3 líneas construido en CSS puro (sin SVG) que se anima a X */
.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: #fff;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
  content: '';
  position: absolute;
}

.nav__toggle-icon::before {
  transform: translateY(-7px);
}

.nav__toggle-icon::after {
  transform: translateY(7px);
}

.nav__toggle[aria-expanded='true'] .nav__toggle-icon {
  background-color: transparent;
}

.nav__toggle[aria-expanded='true'] .nav__toggle-icon::before {
  transform: translateY(0) rotate(45deg);
}

.nav__toggle[aria-expanded='true'] .nav__toggle-icon::after {
  transform: translateY(0) rotate(-45deg);
}

@media (min-width: 1024px) {
  .nav__toggle {
    display: none;
  }
}

/* --- Navegación principal --- */

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover {
  color: #fff;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav__link[aria-current='page'] {
  color: #fff;
}

.nav__chevron {
  transition: transform var(--transition-base);
}

.nav__cta {
  flex-shrink: 0;
}

/* --- Dropdown de Servicios --- */

.nav__item--has-dropdown {
  position: relative;
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  padding: var(--space-2);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
}

.nav__dropdown-link:hover {
  background-color: var(--color-neutral-100);
  color: var(--color-primary);
}

/* Progressive enhancement: funciona con hover/focus sin JS, y con .is-open via JS */
@media (min-width: 1024px) {
  .nav__item--has-dropdown:hover .nav__dropdown,
  .nav__item--has-dropdown:focus-within .nav__dropdown,
  .nav__item--has-dropdown.is-open .nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav__item--has-dropdown.is-open .nav__chevron,
  .nav__item--has-dropdown:focus-within .nav__chevron {
    transform: rotate(180deg);
  }
}

/* --------------------------------------------------------------------------
   Navegación en móvil / tablet (< 1024px): panel desplegable a pantalla
   completa bajo el header, dropdown de Servicios como acordeón.
   -------------------------------------------------------------------------- */

@media (max-width: 1023.98px) {
  .nav {
    position: fixed;
    inset: var(--space-16) 0 0 0; /* deja visible el header por encima */
    top: 73px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background-color: var(--color-bg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .nav__link {
    width: 100%;
    padding: var(--space-4) var(--space-3);
    font-size: var(--text-base);
    justify-content: space-between;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link:hover {
    color: var(--color-primary-700);
    background-color: var(--color-neutral-100);
  }

  .nav__cta {
    margin-top: var(--space-4);
    text-align: center;
  }

  /* El panel móvil tiene fondo blanco: el CTA ghost (pensado para el header
     transparente/oscuro) se cambia a sólido para seguir siendo visible.
     color: navy-900, no #fff — blanco sobre accent da ~2.3:1, por debajo de
     WCAG AA (4.5:1). Ver The Text Contrast Rule en DESIGN.md. */
  .nav .btn--ghost.nav__cta {
    background-color: var(--color-accent);
    color: var(--color-primary-900);
    border-color: var(--color-accent);
    justify-content: center;
  }

  .nav .btn--ghost.nav__cta:hover {
    background-color: var(--color-accent-light);
  }

  /* Dropdown como acordeón: siempre en flujo, se expande con max-height */
  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
  }

  .nav__item--has-dropdown.is-open .nav__dropdown {
    max-height: 24rem;
    padding-block: var(--space-2);
  }

  .nav__item--has-dropdown.is-open .nav__chevron {
    transform: rotate(180deg);
  }

  .nav__dropdown-link {
    padding-left: var(--space-6);
  }
}


/* --------------------------------------------------------------------------
   2. FOOTER
   -------------------------------------------------------------------------- */

.site-footer {
  background-color: var(--color-bg-inverse);
  color: var(--color-text-inverse-muted);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  gap: var(--space-10);
  grid-template-columns: repeat(1, minmax(0, 1fr));
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1.4fr 1.6fr 1fr 1fr;
  }
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.footer__brand .logo {
  color: var(--color-text-inverse);
}

.footer__brand .logo__tagline {
  color: var(--color-text-inverse-muted);
}

.footer__description {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 32ch;
}

/* --- Redes sociales --- */

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-text-inverse);
  transition: background-color var(--transition-base);
}

.footer__social-link:hover {
  background-color: var(--color-accent);
}

.footer__social-link svg {
  width: 1.1rem;
  height: 1.1rem;
}

/* --- Sedes --- */

.footer__office-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 480px) {
  .footer__office-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .footer__office-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--space-5);
  }
}

.footer__office h4 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-2);
}

.footer__office address {
  font-style: normal;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer__office p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer__office a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.3);
  text-underline-offset: 2px;
}

.footer__office a:hover {
  text-decoration-color: currentColor;
}

.footer__office--soon {
  opacity: 0.65;
}

/* --- Listas de servicios / legal --- */

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.footer__list a {
  color: inherit;
  text-decoration: none;
}

.footer__list a:hover {
  color: var(--color-text-inverse);
  text-decoration: underline;
}

/* --- Línea inferior: copyright --- */

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-6);
  font-size: var(--text-xs);
}

.footer__copyright a {
  color: inherit;
}