/* ── Navigation ─────────────────────────────────────────────── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 8, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow var(--transition-normal);
}

.site-nav.is-scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Logo area */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-brand img {
  height: 28px;
  width: auto;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.nav-brand:hover img {
  opacity: 1;
}

.nav-brand-text {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

/* Desktop links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(200, 164, 92, 0.06);
}

.nav-link.is-active {
  color: var(--accent);
  background: var(--accent-dim);
}

/* Language toggle (compact) */
.lang-toggle {
  display: flex;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-left: 8px;
  flex-shrink: 0;
}

.lang-btn {
  padding: 5px 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--text-secondary);
}

.lang-btn.is-active {
  background: var(--accent-dim);
  color: var(--accent);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all var(--transition-normal);
}

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

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

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

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(8, 8, 13, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99;
  padding: var(--space-lg);
  overflow-y: auto;
}

.nav-mobile.is-open {
  display: flex;
  flex-direction: column;
  gap: 4px;
  animation: fadeSlideDown 0.25s var(--ease-out);
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-mobile .nav-link {
  padding: 14px 16px;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
}

.nav-mobile .lang-toggle {
  margin: var(--space-md) 0 0;
  align-self: flex-start;
}

/* Responsive */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .nav-inner .lang-toggle { display: none; }
}

@media (min-width: 901px) {
  .nav-mobile { display: none !important; }
}