.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 48px;
  background-color: rgba(251, 251, 253, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  z-index: 9999;
  transition: var(--apple-transition);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 var(--apple-spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.25rem;
  font-weight: var(--apple-font-weight-semibold);
  color: var(--apple-black);
  gap: var(--apple-spacing-xs);
  text-decoration: none;
}

.logo:hover {
  color: var(--apple-black);
  text-decoration: none;
}

.logo-img,
.logo img {
  height: 40px !important;
  width: auto !important;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.625rem;
  font-weight: var(--apple-font-weight-regular);
  color: var(--apple-gray);
}

.nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--apple-spacing-md);
  height: 100%;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 var(--apple-spacing-xs);
  font-size: 0.875rem;
  font-weight: var(--apple-font-weight-regular);
  color: var(--apple-black);
  transition: var(--apple-transition);
  height: 48px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--apple-blue);
  text-decoration: none;
}

.nav-dropdown {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background-color: var(--apple-white);
  border-radius: var(--apple-border-radius-sm);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transition: var(--apple-transition);
  padding: var(--apple-spacing-sm) 0;
  margin-top: var(--spacing-xs);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  color: var(--apple-black);
  transition: var(--apple-transition);
}

.nav-dropdown-item:hover {
  background-color: var(--apple-light-gray);
  color: var(--apple-black);
  text-decoration: none;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--apple-spacing-sm);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--apple-black);
  border-radius: 1px;
  transition: var(--apple-transition);
  position: relative;
}

.menu-toggle span:not(:last-child) {
  margin-bottom: 4px;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    background-color: var(--apple-white);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--apple-spacing-lg);
    gap: 0;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-item {
    width: 100%;
    height: auto;
    border-bottom: 1px solid var(--apple-light-gray);
  }

  .nav-link {
    padding: var(--apple-spacing-md) 0;
    font-size: 1.25rem;
    justify-content: space-between;
    height: auto;
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--apple-blue);
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    padding: 0 0 var(--apple-spacing-md) var(--apple-spacing-md);
    margin-top: 0;
    background-color: var(--apple-light-gray);
    border-radius: var(--apple-border-radius-sm);
  }

  .nav-dropdown-item {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .menu-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 767px) {
  .header {
    height: 44px;
  }

  .header-container {
    padding: 0 var(--apple-spacing-sm);
  }

  .logo {
    font-size: 1.125rem;
  }

  .logo img {
    height: 20px;
  }

  .nav-menu {
    top: 44px;
  }
}