.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--mars-border);
}

.site-header__inner {
  height: var(--header-height);
  max-width: var(--max-content);
  margin-inline: auto;
  padding-inline: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.mars-logo--image {
  display: flex;
  align-items: center;
  min-width: 0;
  max-width: min(52vw, 280px);
  line-height: 0;
}

.mars-logo__banner {
  width: 100%;
  height: auto;
  max-height: 2.35rem;
  object-fit: contain;
  object-position: left center;
}

@media (min-width: 768px) {
  .mars-logo--image {
    max-width: 320px;
  }

  .mars-logo__banner {
    max-height: 2.75rem;
  }
}

.site-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--mars-muted);
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--mars-cyan);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--mars-border);
  border-radius: var(--radius-pill);
  background: var(--mars-white);
  color: var(--mars-black);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.lang-toggle:hover {
  border-color: var(--mars-cyan);
  color: var(--mars-teal);
}

.lang-toggle svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.site-header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.site-header__toggle span:not(.visually-hidden) {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--mars-black);
  border-radius: 1px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s ease;
}

.site-header.is-open .site-header__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .site-header__toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .site-header__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Clip wrapper — GSAP anima height; el nav “cae” dentro */
.site-nav-mobile-wrap {
  display: block;
  overflow: hidden;
  height: 0;
  visibility: hidden;
  pointer-events: none;
  will-change: height;
}

.site-nav--mobile {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.35rem 1.25rem 1.25rem;
  background: var(--mars-white);
  border-bottom: 1px solid var(--mars-border);
  transform-origin: top center;
  will-change: transform;
}

.site-nav--mobile a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--mars-muted);
  padding: 0.35rem 0;
}

.site-nav--mobile a:hover {
  color: var(--mars-cyan);
}

@media (min-width: 768px) {
  .site-header__actions {
    gap: 1.25rem;
  }

  .site-nav {
    display: flex;
  }

  .site-header__toggle {
    display: none;
  }

  .site-nav-mobile-wrap {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav-mobile-wrap,
  .site-nav--mobile {
    will-change: auto;
  }
}