.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}
a.custom-logo-link {
  width: 130px;
  display: flex;
  align-items: center;
}
img.custom-logo {
  width: 100%;
  height: auto;
}

.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 80px;
  position: relative;
}

.site-branding {
  flex-shrink: 0;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #000;
  text-decoration: none;
  display: inline-block;
}

.site-title__text {
  background: linear-gradient(135deg, #9333ea 0%, #3b82f6 50%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-title:hover .site-title__text {
  background: linear-gradient(135deg, #a855f7 0%, #60a5fa 50%, #fb923c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.search-toggle {
  border: none;
  background: transparent;
  border-radius: 999px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #000;
  cursor: pointer;
  transition: color var(--transition-base);
}

.search-toggle:hover {
  color: var(--color-primary);
}

.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  line-height: 1;
  font-size: 24px;
}

.header-search {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: #f8fafc;
  padding: 1rem 0;
}

.header-search.is-visible {
  display: block;
}

.header-search[hidden] {
  display: none;
}

.primary-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.primary-navigation li {
  position: relative;
}

.primary-navigation a {
  font-weight: 500;
  padding: 0.75rem 0.5rem;
  color: #000;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--transition-base);
  text-decoration: none;
}

.primary-navigation a:hover {
  color: var(--color-primary);
}

.primary-navigation .menu-item-has-children > a::after {
  content: "▼";
  font-size: 0.65rem;
  margin-left: 0.25rem;
  transition: transform var(--transition-base);
}

.primary-navigation .menu-item-has-children:hover > a::after {
  transform: rotate(180deg);
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  z-index: 1000;
  position: relative;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #000;
  transition: all 0.3s ease;
  margin: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 768px) {
  .site-header__nav {
    flex-wrap: wrap;
  }

  .site-branding {
    order: 1;
    flex: 1;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    order: 2;
  }

  .site-header__actions {
    order: 3;
  }

  .primary-navigation {
    display: none;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    padding: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 999;
    order: 4;
    margin-top: 0;
  }

  .primary-navigation.is-open {
    display: block;
  }

  .primary-navigation ul {
    flex-direction: column;
    gap: 0;
    align-items: stretch;
    width: 100%;
  }

  .primary-navigation li {
    width: 100%;
  }

  .primary-navigation a {
    padding: 1rem;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    width: 100%;
    display: block;
  }

  .primary-navigation a:last-child {
    border-bottom: none;
  }
}