/* ==========================================================================
   Layout: contenedor, encabezado, secciones y pie
   ========================================================================== */

.container {
  width: min(var(--container-width), 92%);
  margin-inline: auto;
}

/* Encabezado
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.site-header__logo img {
  height: 56px;
  width: auto;
}

.main-nav__list {
  display: flex;
  gap: 32px;
}

.main-nav__link {
  padding: 6px 0;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-navy);
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.main-nav__link:hover,
.main-nav__link[aria-current="page"] {
  border-color: var(--color-green);
}

.menu-toggle {
  display: none;
  padding: 8px 14px;
  font: inherit;
  font-weight: 600;
  color: var(--color-navy);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
}

/* Secciones
   ========================================================================== */

.section {
  padding: 88px 0;
}

.section--soft {
  background-color: var(--color-bg-soft);
}

.section__header {
  max-width: 680px;
  margin-bottom: 44px;
}

.section__header--center {
  margin-inline: auto;
  text-align: center;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Pie de página
   ========================================================================== */

.site-footer {
  padding: 56px 0 28px;
  font-size: 0.92rem;
  color: #b8c7d3;
  background-color: var(--color-footer);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.site-footer__brand span {
  font-size: 0.75rem;
  color: var(--color-green);
}

.site-footer__title {
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: #ffffff;
}

.site-footer__list li + li {
  margin-top: 8px;
}

.site-footer__list a:hover {
  color: var(--color-green);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  font-size: 0.85rem;
}

/* Responsive
   ========================================================================== */

@media (max-width: 900px) {
  .section {
    padding: 64px 0;
  }

  .split,
  .grid-3 {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav__list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px 4%;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav__list.is-open {
    display: flex;
  }

  .main-nav__link {
    display: block;
    padding: 14px 0;
  }
}

@media (max-width: 520px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .site-header__logo img {
    height: 48px;
  }
}