.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.96), rgba(8, 10, 15, 0.98));
  border-bottom: 1px solid rgba(15, 23, 42, 0.9);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.95);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.25rem;
  color: inherit;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.2rem;
  height: 1px;
  transform-origin: center;
  transform: scaleX(0);
  background: linear-gradient(90deg, #E07A5F, #D4A373);
  transition: transform 200ms ease-out;
}

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

.site-nav__item--highlight .site-nav__link {
  color: #E07A5F;
}

.site-nav__item--highlight .site-nav__link::after {
  background: linear-gradient(90deg, #D4A373, #E07A5F);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.95), rgba(8, 10, 15, 0.98));
  padding: 0;
  cursor: pointer;
}

.nav-toggle__bar {
  width: 1.05rem;
  height: 2px;
  border-radius: 999px;
  background: #F1F5F9;
  transition: transform 160ms ease-out, opacity 160ms ease-out;
}

.nav-toggle__bar + .nav-toggle__bar {
  margin-top: 0.26rem;
}

.nav-toggle.is-open .nav-toggle__bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

@media (max-width: 768px) {
  .site-header__inner {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.99), #020617);
    border-bottom: 1px solid rgba(15, 23, 42, 0.9);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    visibility: hidden;
    transition: transform 180ms ease-out, opacity 180ms ease-out, visibility 0s linear 180ms;
  }

  .site-nav--open {
    transform: scaleY(1);
    opacity: 1;
    visibility: visible;
    transition: transform 220ms ease-out, opacity 220ms ease-out;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1.5rem 1.25rem;
    gap: 0.9rem;
  }

  .site-nav__link {
    padding-block: 0.2rem;
    font-size: 0.8rem;
  }
}

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