/* ===== NAVIGATION ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.2rem 3rem;
  display: flex;
  align-items: center;
  background: rgba(10, 10, 15, .75);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, .04);
  transition: background var(--transition-fast);
}

.site-header.nav--scrolled {
  background: rgba(10, 10, 15, .95);
  border-bottom-color: rgba(0, 200, 212, .08);
}

.nav-logo-link {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.nav-logo-svg {
  height: 38px;
  width: 190px;
  filter: drop-shadow(0 0 8px rgba(0, 200, 212, .2));
  transition: filter var(--transition-fast);
}

.nav-logo-link:hover .nav-logo-svg {
  filter: drop-shadow(0 0 16px rgba(0, 200, 212, .45));
}

.site-header nav {
  margin-left: auto;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  margin-right: 2.5rem;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: var(--cyan);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  flex-shrink: 0;
  padding: .6rem 1.5rem;
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: 'Outfit', sans-serif;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav-cta:hover {
  background: var(--cyan);
  color: var(--dark);
}

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 0;
  cursor: pointer;
  z-index: 110;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-right: 1.5rem;
}

.lang-option {
  color: var(--text-dim);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .05em;
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: .2rem .3rem;
}

.lang-option:hover {
  color: var(--white);
}

.lang-option.active {
  color: var(--cyan);
}

.lang-divider {
  color: var(--card-border);
  font-size: .65rem;
  user-select: none;
}

/* Mobile menu overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(6, 6, 10, .85);
  backdrop-filter: blur(8px);
  z-index: 95;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-overlay.active {
  opacity: 1;
}