.site-nav {
  --color-accent: var(--brand-teal);
  --color-accent-hover: color-mix(in srgb, var(--color-accent) 86%, #fff);
  --color-on-accent: var(--dark-bg);
  --color-text: var(--dark-text);
  --color-text-muted: var(--dark-text-muted);
  --focus-ring: 0 0 0 4px color-mix(in srgb, var(--color-accent) 30%, transparent);
  
  --nav-bleed-l: min(20px, calc(var(--wide-pad) - 6px));
  --nav-bleed-r: 8px; 
  --nav-lang-w: 68px; 

  position: fixed;
  top: var(--nav-top);
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-inline: var(--wide-pad);
  color: var(--color-text);
  pointer-events: none; 
  transition: transform var(--duration-base) var(--ease-out);
}
.site-nav.is-hidden {
  transform: translateY(calc(-100% - var(--nav-top) - 8px));
}

.site-nav__bar {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  max-width: var(--nav-max);
  height: var(--nav-height);
  margin-inline: auto;
  border-radius: var(--radius-pill);
  pointer-events: auto;
}


.site-nav__bar::before {
  content: "";
  position: absolute;
  inset: 0 calc(-1 * var(--nav-bleed-r)) 0 calc(-1 * var(--nav-bleed-l));
  z-index: -1;
  border-radius: inherit;
  background: var(--nav-bg);
  box-shadow: var(--nav-glass-shadow);
  -webkit-backdrop-filter: saturate(180%) blur(var(--nav-blur));
  backdrop-filter: saturate(180%) blur(var(--nav-blur));
}


.site-nav__logo {
  display: inline-flex;
  align-items: center;
  height: 40px;
  transition: opacity var(--duration-fast) ease;
}
.site-nav__logo:hover {
  opacity: 0.75;
}
.site-nav__logo:active {
  opacity: 0.6;
}


.site-nav__toggle {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  transition: background-color var(--duration-fast) ease;
}
.site-nav__toggle:hover {
  background: var(--nav-hover);
}
.site-nav__toggle-bar {
  position: absolute;
  width: 18px;
  height: 1.75px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform var(--duration-base) var(--ease-out);
}
.site-nav__toggle-bar:nth-child(1) {
  transform: translateY(-3.5px);
}
.site-nav__toggle-bar:nth-child(2) {
  transform: translateY(3.5px);
}
.site-nav.is-open .site-nav__toggle-bar:nth-child(1) {
  transform: rotate(45deg);
}
.site-nav.is-open .site-nav__toggle-bar:nth-child(2) {
  transform: rotate(-45deg);
}


.site-nav__menu {
  position: absolute;
  top: calc(100% + 8px);
  left: calc(-1 * var(--nav-bleed-l));
  right: calc(-1 * var(--nav-bleed-r));
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
  border-radius: var(--radius-lg);
  background: var(--nav-panel-bg);
  box-shadow: var(--nav-glass-shadow);
  -webkit-backdrop-filter: saturate(180%) blur(var(--nav-blur));
  backdrop-filter: saturate(180%) blur(var(--nav-blur));
  transform-origin: top center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.98);
  transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out),
    visibility 0s linear var(--duration-base);
}
.site-nav.is-open .site-nav__menu {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.site-nav__links {
  display: flex;
  flex-direction: column;
}
.site-nav__link {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease;
}
.site-nav__link:hover,
.site-nav__link.is-active {
  background: var(--nav-hover);
  color: var(--color-text);
}
.site-nav__cta.btn {
  --btn-height: 48px;
  width: 100%;
  font-size: var(--fs-sm);
}


.site-nav__lang {
  position: relative;
  margin-left: auto; 
}
.site-nav__lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: var(--nav-lang-w);
  height: 44px;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.04em;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease;
}
.site-nav__lang-toggle::-webkit-details-marker {
  display: none;
}
.site-nav__lang-toggle .icon {
  width: 18px;
  height: 18px;
}
.site-nav__lang-toggle:hover,
.site-nav__lang[open] .site-nav__lang-toggle {
  background: var(--nav-hover);
  color: var(--color-text);
}
.site-nav__lang-list {
  position: absolute;
  top: calc(100% + 12px);
  right: calc(-1 * var(--nav-bleed-r) - 56px); 
  min-width: 184px;
  padding: 6px;
  border-radius: var(--radius-lg);
  background: var(--nav-panel-bg);
  box-shadow: var(--nav-glass-shadow);
  -webkit-backdrop-filter: saturate(180%) blur(var(--nav-blur));
  backdrop-filter: saturate(180%) blur(var(--nav-blur));
}
.site-nav__lang-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease;
}
.site-nav__lang-link:hover,
.site-nav__lang-link[aria-current] {
  background: var(--nav-hover);
  color: var(--color-text);
}
.site-nav__lang-link .icon {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}


@media (max-width: 399px) {
  .site-nav__bar {
    gap: 4px;
  }
  .site-nav__lang-toggle {
    width: 44px;
  }
  .site-nav__lang-code {
    display: none;
  }
  .site-nav__lang-list {
    right: calc(-1 * var(--nav-bleed-r) - 48px); 
  }
}


@media (min-width: 900px) {
  .site-nav__bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
  }
  .site-nav__toggle {
    display: none;
  }

  .site-nav__menu {
    display: contents; 
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .site-nav__links {
    grid-column: 2;
    flex-direction: row;
    gap: 4px;
  }
  .site-nav__link {
    height: 40px;
    padding: 0 16px;
    border-radius: var(--radius-pill);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
  }
  .site-nav__cta.btn {
    --btn-height: 44px;
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    width: auto;
    margin-right: calc(var(--nav-lang-w) + 4px);
    padding-inline: 22px;
  }
  
  .site-nav__lang {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    margin-left: 0;
  }
  .site-nav__lang-list {
    right: calc(-1 * var(--nav-bleed-r));
  }
}

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