/* ============================================
   NAVIGATION
   ============================================ */
header.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  background: rgba(0, 0, 0, 0);
  transition: background var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease);
  border-bottom: 1px solid rgba(255, 255, 255, 0);
}

header.nav.scrolled {
  background: rgba(0, 0, 0, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.logo {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--white);
  text-transform: uppercase;
  line-height: 1;
  transition: color var(--t-base) var(--ease);
}

.logo--dark {
  color: var(--black);
}

.logo img {
  height: 68px;
  width: auto;
  display: block;
  transition: filter var(--t-base) var(--ease);
}

.logo.logo--dark img {
  filter: invert(1);
}

.logo span {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  margin-top: 4px;
  opacity: 0.7;
  color: inherit;
}

nav.primary {
  display: flex;
  gap: 4px;
  align-items: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

nav.primary > .nav-item {
  position: relative;
}

nav.primary > .nav-item > a {
  display: block;
  padding: 12px 20px;
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--t-fast);
}

nav.primary > .nav-item > a:hover {
  opacity: 0.6;
}

nav.primary > .nav-item > a.nav-active {
  opacity: 0.5 !important;
  text-decoration: underline !important;
  text-decoration-color: rgba(255, 255, 255, 0.8) !important;
  text-decoration-thickness: 1px !important;
  text-underline-offset: 5px !important;
}

.caret {
  display: inline-block;
  font-size: 10px;
  margin-left: 2px;
  transition: transform var(--t-base);
}

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

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--black);
  border: 1px solid rgba(255, 255, 255, 0.1);
  min-width: 260px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--t-base),
              transform var(--t-base),
              visibility var(--t-base);
  padding: 8px 0;
}

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

.dropdown a {
  display: block;
  padding: 14px 24px;
  color: var(--white);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-left: 2px solid transparent;
  transition: background var(--t-fast),
              border-color var(--t-fast),
              padding-left var(--t-fast);
}

.dropdown a:hover {
  background: rgba(255, 255, 255, 0.06);
  border-left-color: var(--white);
  padding-left: 28px;
}

/* Nav CTA */
.nav-cta {
  margin-left: auto;
  padding: 12px 24px;
  border: 1px solid var(--white);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background var(--t-fast),
              color var(--t-fast);
}

.nav-cta:hover {
  background: var(--white);
  color: var(--black);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--t-base);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--black);
  padding: 24px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 99;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  color: var(--white);
  padding: 16px 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-menu a.nav-active {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.4);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu .mobile-cta {
  margin-top: 16px;
  text-align: center;
  border: 1px solid var(--white);
  padding: 16px;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

nav.primary .lang-switcher > a {
  display: block;
  padding: 12px 20px;
  color: var(--white);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--t-fast);
  min-width: 52px;
  text-align: center;
}

.lang-switcher > a:hover {
  opacity: 0.6;
}

.lang-dropdown {
  min-width: 170px;
  right: 0;
  left: auto;
}

.lang-dropdown a {
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* Mobile language switcher */
.mobile-lang {
  display: flex;
  gap: 8px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-lang a {
  flex: 1;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  padding: 12px 8px !important;
  font-size: 12px !important;
  letter-spacing: 0.1em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2) !important;
}

.mobile-lang a.lang-active {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5) !important;
}