.phase2-design .site-header {
  display: contents;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: 64px;
  display: flex;
  align-items: center;
  background: var(--bg-nav);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--duration-base) var(--ease-in-out), box-shadow var(--duration-base) var(--ease-in-out);
}

.nav.scrolled {
  border-bottom-color: var(--border-default);
  box-shadow: 0 1px 40px rgba(0, 0, 0, 0.35);
}

.nav__inner {
  width: 100%;
  max-width: var(--container-base);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__logo {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-primary);
  text-decoration: none;
  font-family: "Syne", "DM Sans", system-ui, sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
}

.nav__logo img {
  height: 28px;
  width: 28px;
  display: block;
}

.nav__logo-word {
  display: inline-block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

.nav__link {
  position: relative;
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-md);
  transition: color var(--duration-fast), background var(--duration-fast);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav__link.active {
  color: var(--text-primary);
}

.nav__link.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background: var(--brand-500);
  border-radius: var(--radius-full);
}

.nav__divider {
  width: 1px;
  height: 20px;
  background: var(--border-default);
  flex-shrink: 0;
}

.phase2-design .locale-switcher-button {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.phase2-design .locale-switcher-button:hover,
.phase2-design .locale-switcher-button:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.phase2-design .locale-switcher-button:focus-visible {
  box-shadow:
    0 0 0 3px rgba(107, 145, 255, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.phase2-design .locale-menu {
  background: rgba(12, 18, 32, 0.96);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

.phase2-design .locale-menu-item {
  color: var(--text-primary);
}

.phase2-design .locale-menu-item:hover,
.phase2-design .locale-menu-item:focus-visible,
.phase2-design .locale-menu-item[data-selected='true'] {
  background: rgba(51, 92, 255, 0.22);
  color: #fff;
}

.nav__social {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: color var(--duration-fast), transform var(--duration-fast), background var(--duration-fast);
  text-decoration: none;
}

.nav__social-link:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

.nav__social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 var(--space-5);
  background: var(--brand-500);
  color: #fff;
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: var(--font-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--duration-fast), box-shadow var(--duration-fast), transform var(--duration-fast);
}

.nav__cta:hover {
  background: var(--brand-400);
  box-shadow: var(--glow-brand-sm);
  transform: translateY(-1px);
}

.nav__cta:active {
  transform: translateY(0);
  background: var(--brand-600);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  margin-left: auto;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) var(--ease-spring), opacity var(--duration-fast);
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.nav__mobile {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border-default);
  padding: var(--space-6) var(--container-pad);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
  overflow-y: auto;
  z-index: calc(var(--z-sticky) - 1);
}

.nav__mobile.open {
  transform: translateX(0);
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  font-size: var(--font-body-size);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: color var(--duration-fast), background var(--duration-fast);
}

.nav__mobile-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.nav__mobile-social {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-4);
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
}

.nav__mobile-social a {
  color: var(--text-muted);
}

.nav__mobile-social a:hover {
  color: var(--brand-400);
}

.nav__mobile-social svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.nav__mobile-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  margin: var(--space-4) 0;
  background: var(--brand-500);
  color: #fff;
  font-weight: 600;
  font-size: var(--font-body-size);
  border-radius: var(--radius-lg);
  text-decoration: none;
}

@media (max-width: 960px) {
  .nav__links,
  .nav__divider,
  .nav__social {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }
}

@media (max-width: 640px) {
  .nav__cta {
    display: none;
  }
}