/* Containers */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background-color: var(--color-brand);
  color: var(--color-white);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 120; /* permanece visible sobre el contenido al hacer scroll */
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0.75rem 0;
}
.site-header .container{
  max-width: 1280px; /* header mas ancho sin afectar otras secciones */
}
.nav-toggle {
  background: none;
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #ffffff;
  font-size: 1.35rem;
  line-height: 1;
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  cursor: pointer;
}
.main-nav {
  display: none;
}
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav li {
  margin: 0.5rem 0;
}
.main-nav a {
  color: var(--color-white);
  font-size: 0.95rem;
}
.main-nav a.active {
  font-weight: 700;
  text-decoration: underline;
}
.main-nav.open {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-brand);
  padding: 0.5rem 1.25rem 0.75rem;
}

/* Grids */
.two-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  align-items: stretch; /* ensure cards are same height */
}
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0 1.25rem;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
  .main-nav {
    display: block;
    position: static;
  }
  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 1.2rem;
  }
  .main-nav li {
    margin: 0;
  }
  .two-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cards-grid {
    grid-template-columns: repeat(3, minmax(220px, 1fr));
  }
  .news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}