/* Layout: contenedor, header, nav y footer */

.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ====== Header ====== */
.encabezado {
  position: sticky;
  top: -1px;
  padding-top: 1px;
  z-index: 50;
  background: var(--blanco);
  border-bottom: 1px solid rgba(3, 28, 56, 0.12);
}

.encabezado__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--esp-md);
  padding-block: 1rem;
}

/* Mobile: logo más pequeño */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--fuente-titulos);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--marino);
}

.logo:hover {
  color: var(--marino);
}

/* Mobile: imagen de logo más pequeña */
.logo__imagen {
  height: 36px;
  width: auto;
  align-self: flex-end;
}

/* ====== Nav ====== */
.nav {
  display: flex;
  align-items: center;
  gap: var(--esp-lg);
}

/* Mobile: menú colapsado, se despliega con JS */
.nav__lista {
  display: flex;
  position: fixed;
  inset: 64px 0 auto 0;
  background: var(--blanco);
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0.5rem var(--pad) 1.5rem;
  border-bottom: 1px solid rgba(3, 28, 56, 0.12);
  box-shadow: 0 8px 24px rgba(3, 28, 56, 0.10);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms;
}

.nav.esta-abierto .nav__lista {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__lista li {
  border-bottom: 1px solid rgba(3, 28, 56, 0.12);
}

.nav__enlace {
  display: block;
  padding-block: 1rem;
  font-size: 0.9375rem;
  color: rgba(3, 28, 56, 0.65);
  font-weight: 500;
}

.nav__enlace:hover {
  color: var(--rojo);
}

/* Mobile: botón hamburguesa visible */
.nav__boton-menu {
  display: inline-flex;
  width: 40px;
  height: 40px;
  border-radius: 6px;
  border: 1px solid rgba(3, 28, 56, 0.12);
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--marino);
}

/* ====== Secciones ====== */
.seccion {
  padding-block: var(--esp-xl);
}

.seccion__encabezado {
  margin-bottom: var(--esp-lg);
}

.seccion__etiqueta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rojo);
  margin-bottom: 0.75rem;
}

.seccion__etiqueta::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--rojo);
}

.seccion__descripcion {
  margin-top: 0.75rem;
  font-size: clamp(1rem, 0.5vw + 1rem, 1.125rem);
  max-width: 60ch;
}

/* ====== Footer ====== */
.footer {
  background: var(--marino);
}

/* Mobile: columna única */
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--esp-lg);
  padding-block: var(--esp-lg);
  align-items: start;
}

.footer__columna {
  color: rgba(247, 242, 239, 0.65);
}

.footer__columna h4 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(247, 242, 239, 0.4);
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer__columna p {
  font-size: 0.9375rem;
  color: rgba(247, 242, 239, 0.55);
  margin-top: 0.5rem;
}

.footer__columna a {
  font-size: 0.9375rem;
  color: rgba(247, 242, 239, 0.65);
}

.footer__columna a:hover {
  color: var(--blanco);
}

.footer .logo {
  color: var(--blanco);
  font-size: clamp(1.5rem, 2vw, 2rem);
}

.footer .logo:hover {
  color: var(--blanco);
}

.footer__lista {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__lista li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer__lista li i {
  width: 14px;
  text-align: center;
  color: rgba(247, 242, 239, 0.4);
  flex-shrink: 0;
}

/* Mobile: redes alineadas a la izquierda */
.footer__columna--redes {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
}

.footer__redes {
  display: flex;
  gap: 0.5rem;
}

.footer__red {
  width: 36px;
  height: 36px;
  border-radius: var(--radio);
  border: 1px solid rgba(247, 242, 239, 0.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(247, 242, 239, 0.6);
  transition: color 150ms, background 150ms, border-color 150ms;
}

.footer__red:hover {
  color: var(--blanco);
  background: var(--rojo);
  border-color: var(--rojo);
}

/* Mobile: pie de footer en columna */
.footer__bajo {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid rgba(247, 242, 239, 0.1);
  padding-block: 1rem;
  font-size: 0.8125rem;
  color: rgba(247, 242, 239, 0.4);
}

/* ====== Desktop (min-width: 900px) ====== */
@media (min-width: 900px) {
  .logo {
    font-size: 2.5rem;
  }

  .logo__imagen {
    height: 60px;
  }

  /* Nav horizontal siempre visible */
  .nav__lista {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--esp-lg);
    padding: 0;
    border-bottom: none;
    box-shadow: none;
    background: transparent;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: none;
  }

  .nav__lista li {
    border-bottom: none;
  }

  .nav__enlace {
    display: inline;
    padding-block: 0;
  }

  .nav__boton-menu {
    display: none;
  }

  /* Footer: 4 columnas */
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr auto;
  }

  .footer__columna--redes {
    justify-content: flex-end;
  }

  .footer__bajo {
    flex-direction: row;
  }
}