/* ==========================================================================
   IBC — Cabecera, navegación, menú móvil y pie de página
   ========================================================================== */

/* --------------------------------------------------------------------------
   Cabecera
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--duration-normal) var(--ease-standard),
              border-color var(--duration-normal) var(--ease-standard),
              backdrop-filter var(--duration-normal) var(--ease-standard);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(6, 15, 27, 0.72), rgba(6, 15, 27, 0));
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.site-header.is-stuck {
  background-color: rgba(8, 19, 33, 0.94);
  border-bottom-color: var(--border-hairline-dark);
  backdrop-filter: blur(14px);
}

.site-header.is-stuck::before { opacity: 0; }

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 44px;
}

.brand img {
  width: auto;
  height: 34px;
  transition: opacity var(--duration-fast) var(--ease-standard);
}

.brand:hover img { opacity: 0.78; }

/* --------------------------------------------------------------------------
   Navegación de escritorio
   -------------------------------------------------------------------------- */
.primary-nav { margin-inline: auto; }

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 0.2rem + 1.35vw, 2rem);
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding-block: 0.5rem;
  color: var(--color-on-dark-soft);
  font-family: var(--font-menu);
  font-size: var(--text-menu);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-brass-400);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible,
.primary-nav__link[aria-current="true"],
.primary-nav__link[aria-current="page"] { color: var(--color-bone-50); }

.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after,
.primary-nav__link[aria-current="true"]::after,
.primary-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}

/* --------------------------------------------------------------------------
   Acciones de cabecera
   -------------------------------------------------------------------------- */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 0 0 auto;
}

.member-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  color: var(--color-on-dark-soft);
  font-family: var(--font-menu);
  font-size: var(--text-menu);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
}

.member-link i { font-size: 0.95rem; }
.member-link:hover, .member-link:focus-visible { color: var(--color-bone-50); }

/* --------------------------------------------------------------------------
   Botón hamburguesa
   -------------------------------------------------------------------------- */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border-hairline-dark);
  background-color: transparent;
  color: var(--color-bone-50);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.nav-toggle:hover { border-color: var(--color-brass-400); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 19px;
  height: 1.5px;
  background-color: currentColor;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: currentColor;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.nav-toggle__bars::before { transform: translateY(-6px); }
.nav-toggle__bars::after { transform: translateY(6px); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   Menú móvil (velo + panel deslizante)

   La capa exterior `.mobile-nav` es el velo a pantalla completa: cubre la
   página, oscurece lo que hay detrás y actúa como zona de descarte. El panel
   sólo ocupa una columna a la derecha, de modo que siempre queda superficie
   fuera del menú donde pulsar para cerrarlo.
   -------------------------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: flex;
  justify-content: flex-end;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              visibility 0s linear var(--duration-normal);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.mobile-nav__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(6, 15, 27, 0.66);
}

.mobile-nav__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(320px, 78vw);
  max-height: 100%;
  padding: var(--space-sm) var(--space-md) var(--space-lg);
  border-left: 1px solid var(--border-hairline-dark);
  background-color: var(--color-navy-950);
  box-shadow: var(--shadow-raised);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translate3d(1.75rem, 0, 0);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.mobile-nav.is-open .mobile-nav__panel { transform: translate3d(0, 0, 0); }

/* --- Cabecera del panel: rótulo + botón de cierre --------------------- */
.mobile-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: calc(var(--header-height) - var(--space-sm) * 2);
  margin-bottom: var(--space-sm);
}

.mobile-nav__eyebrow {
  font-family: var(--font-menu);
  font-size: 0.9375rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-brass-400);
}

.mobile-nav__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--border-hairline-dark);
  background-color: transparent;
  color: var(--color-on-dark);
  font-size: 1.0625rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
}

.mobile-nav__close:hover,
.mobile-nav__close:focus-visible {
  border-color: var(--color-brass-400);
  color: var(--color-brass-400);
}

/* --- Enlaces ---------------------------------------------------------- */
.mobile-nav__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-hairline-dark);
}

.mobile-nav__link {
  display: block;
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--border-hairline-dark);
  color: var(--color-on-dark);
  font-family: var(--font-menu);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-standard);
}

.mobile-nav__link:hover,
.mobile-nav__link:focus-visible,
.mobile-nav__link[aria-current="page"] { color: var(--color-brass-400); }

.mobile-nav__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

/* --------------------------------------------------------------------------
   Pie de página
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy-950);
  color: var(--color-on-dark-soft);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.35fr) minmax(0, 1fr);
  gap: var(--space-lg) var(--space-md);
  align-items: start;
  padding-block: var(--space-xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-brand img { width: auto; height: 52px; }

.footer-wordmark {
  color: var(--color-on-dark-muted);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  line-height: 1.5;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.footer-links__label {
  margin-bottom: var(--space-xs);
  color: var(--color-bone-50);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
}

.footer-links li + li { margin-top: 0.2rem; }

.footer-links a {
  display: inline-block;
  padding-block: 0.3rem;
  font-size: var(--text-sm);
  color: var(--color-on-dark-soft);
}

.footer-links a:hover,
.footer-links a:focus-visible { color: var(--color-brass-400); }

.footer-closing { text-align: right; }

.footer-tagline {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 0.4rem + 1.15vw, 1.5rem);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-bone-50);
  line-height: 1.24;
}

.footer-social {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-hairline-dark);
  color: var(--color-on-dark-soft);
  transition: color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-out-expo);
}

.footer-social a:hover,
.footer-social a:focus-visible {
  color: var(--color-brass-400);
  border-color: var(--color-brass-400);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-xs) var(--space-md);
  padding-block: var(--space-md);
  border-top: 1px solid var(--border-hairline-dark);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-on-dark-muted);
}

.footer-bottom nav { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.footer-bottom a:hover, .footer-bottom a:focus-visible { color: var(--color-brass-400); }

/* --------------------------------------------------------------------------
   Puntos de quiebre
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .primary-nav__list { gap: 0.8rem; }
  .primary-nav__link { font-size: 0.875rem; letter-spacing: 0.05em; }
}

@media (max-width: 1080px) {
  .primary-nav,
  .header-actions .member-link,
  .header-actions .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-inner { justify-content: space-between; }
}

@media (min-width: 1081px) {
  .mobile-nav { display: none; }
}

@media (max-width: 900px) {
  .brand img { height: 28px; }

  .footer-main {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
  }

  .footer-closing { text-align: left; }
  .footer-social { justify-content: flex-start; }
}

@media (max-width: 560px) {
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand img { height: 42px; }
}

@media (max-width: 360px) {
  .footer-links { grid-template-columns: minmax(0, 1fr); }

  /* Pantallas muy estrechas: el panel recupera ancho útil recortando su
     margen interior, para que los botones de acción no partan en dos líneas. */
  .mobile-nav__panel { padding-inline: var(--space-sm); }
}