.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 700;
  font-size: var(--fs-lg);
  color: var(--color-white);
  letter-spacing: 0.02em;
}

.logo img {
  height: 34px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3em;
  color: var(--color-text-light);
  font-size: var(--fs-sm);
  font-weight: 500;
  padding: 0.5em 0.2em;
  transition: color var(--transition);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-white);
}

.nav-item {
  position: relative;
}

.nav-item--dropdown .chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
}

.nav-item--dropdown:hover .chevron {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-navy-900);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 0.5em;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.nav-item--dropdown:hover .dropdown,
.nav-item--dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 0.6em 0.8em;
  border-radius: 6px;
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

.dropdown-link:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
}

.nav-cta {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5em;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (min-width: 993px) {
  .nav-cta {
    display: inline-flex;
  }
}

@media (max-width: 992px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    height: calc(100vh - 76px);
    background-color: var(--color-navy-950);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3);
    gap: var(--space-3);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    padding: 0.9em 0.2em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    background-color: transparent;
    border: none;
    box-shadow: none;
    padding-left: var(--space-2);
  }

  .nav-item--dropdown.is-open .dropdown {
    display: block;
  }

  .nav-cta {
    display: inline-flex;
    margin-top: var(--space-2);
    justify-content: center;
  }

  body.nav-open {
    overflow: hidden;
  }

  .nav-toggle.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}