.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-white);
  box-shadow: 0 10px 28px rgba(4, 53, 71, 0.08);
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 0.75rem;
}

.brand__logo {
  width: clamp(160px, 28vw, 220px);
  height: auto;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-links {
  display: flex;
  gap: 0.4rem;
}

.social-links__item {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out);
}

.social-links__item:hover { transform: translateY(-2px); }
.social-links__item--fb { background: #3b5998; }
.social-links__item--ig { background: linear-gradient(135deg, #f58529, #dd2a7b, #8134af); }
.social-links__item--wa { background: #25d366; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-base), width var(--duration-base);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] {
  background: var(--color-primary-deep);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-backdrop {
  display: none;
}

.site-nav {
  position: relative;
  background: linear-gradient(105deg, #0f5f7a 0%, #0a6f82 42%, #054355 100%);
}

.site-nav::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent) 0%, rgba(8, 168, 144, 0.15) 55%, transparent 100%);
  pointer-events: none;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.7rem 1rem;
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  text-transform: none;
  letter-spacing: 0.01em;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  border: 0;
  width: auto;
  background: transparent;
  transition: color var(--duration-fast), background var(--duration-fast);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.55rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-base) var(--ease-out);
}

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

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.site-nav__link.is-active {
  font-weight: 700;
}

.site-nav__mobile-extra {
  display: none;
}

/* Desktop: forzar barra horizontal limpia */
@media (min-width: 901px) {
  .nav-toggle,
  .nav-backdrop,
  .site-nav__mobile-extra,
  .social-links--mobile {
    display: none !important;
  }

  .site-nav {
    position: relative !important;
    max-height: none !important;
    overflow: visible !important;
    visibility: visible !important;
    box-shadow: none !important;
    background: linear-gradient(105deg, #0f5f7a 0%, #0a6f82 42%, #054355 100%) !important;
    pointer-events: auto !important;
  }

  .site-nav__list {
    flex-direction: row !important;
    gap: 0.2rem !important;
    padding: 0 !important;
  }

  .site-nav__list li + li .site-nav__link {
    border-top: 0 !important;
  }

  .site-nav__link {
    width: auto !important;
    min-height: 48px;
    padding: 0.7rem 1rem !important;
    text-transform: none !important;
    letter-spacing: 0.01em !important;
    font-size: 0.9rem !important;
    border-bottom: 0 !important;
    border-left: 0 !important;
  }

  .site-nav__link:hover,
  .site-nav__link.is-active {
    border-bottom-color: transparent !important;
    border-left-color: transparent !important;
    background: rgba(255, 255, 255, 0.08) !important;
    color: #fff !important;
  }

  body.nav-is-open {
    overflow: visible !important;
    touch-action: auto !important;
  }

  body.nav-is-open .site-header {
    position: sticky !important;
  }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-header__top {
    padding-block: 0.85rem;
    gap: 0.75rem;
  }

  .brand__logo {
    width: clamp(148px, 42vw, 190px);
  }

  .site-header__actions {
    gap: 0.5rem;
  }

  .social-links--desktop,
  .site-header__access-desktop {
    display: none;
  }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 60;
    background: rgba(4, 53, 71, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-out);
  }

  .nav-backdrop.is-visible {
    opacity: 1;
    pointer-events: auto;
  }

  .site-header {
    z-index: 70;
  }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--site-header-h, 72px);
    z-index: 65;
    display: block;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    pointer-events: none;
    background:
      linear-gradient(165deg, #0f5f7a 0%, #054355 55%, #043547 100%);
    box-shadow: 0 18px 40px rgba(4, 53, 71, 0.28);
    transition: max-height var(--duration-slow) var(--ease-out), visibility 0s linear var(--duration-slow);
  }

  .site-nav::after {
    display: none;
  }

  .site-nav.is-open {
    max-height: calc(100dvh - var(--site-header-h, 72px));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    visibility: visible;
    pointer-events: auto;
    transition: max-height var(--duration-slow) var(--ease-out), visibility 0s;
  }

  .site-nav__inner {
    padding-bottom: 1.25rem;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 0.65rem 0 0.35rem;
  }

  .site-nav__list li + li .site-nav__link {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    min-height: 52px;
    padding: 0.95rem 0.35rem;
    text-transform: none;
    letter-spacing: 0;
    font-size: 1.05rem;
    border-bottom: 0;
    border-left: 3px solid transparent;
    background: transparent;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link:hover,
  .site-nav__link.is-active {
    background: rgba(255, 255, 255, 0.08);
    border-bottom: 0;
    border-left-color: var(--color-accent);
  }

  .site-nav__link.is-active {
    font-weight: 700;
  }

  .site-nav__mobile-extra {
    display: grid;
    gap: 0.9rem;
    margin-top: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .site-nav__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 48px;
    padding: 0.7rem 1rem;
    background: var(--color-accent);
    color: #043547;
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
  }

  .site-nav__cta:hover {
    color: #043547;
    filter: brightness(1.05);
  }

  .site-nav__contact {
    display: grid;
    gap: 0.35rem;
  }

  .site-nav__contact a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .site-nav__contact a:hover {
    color: #fff;
  }

  .social-links--mobile {
    display: flex;
  }

  body.nav-is-open {
    overflow: hidden;
    touch-action: none;
  }

  body.nav-is-open .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav,
  .nav-backdrop,
  .nav-toggle__bars span {
    transition: none;
  }
}