/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: linear-gradient(180deg, rgba(15,38,73,0.85) 0%, rgba(15,38,73,0.4) 60%, transparent 100%);
  transition: background var(--duration-normal) ease,
              box-shadow var(--duration-normal) ease,
              transform var(--duration-normal) ease;
}

.nav__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 5vw;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav--solid {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.nav--solid .nav__lang-toggle:hover {
  background: rgba(26,58,107,0.1);
}

.nav--hidden { transform: translateY(-100%); }

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.nav__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-gold);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.nav__logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: #fff;
  padding: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--white);
  transition: color var(--duration-normal) ease;
}

.nav--solid .nav__logo-text { color: var(--royal-blue-dark); }

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

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--duration-fast) ease;
}

.nav--solid .nav__link { color: var(--gray-500); }

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 3px;
  background: var(--gold);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out-expo);
}

.nav__link:hover,
.nav__link.active { color: var(--white); }

.nav--solid .nav__link:hover,
.nav--solid .nav__link.active { color: var(--royal-blue); }

.nav__link:hover::after,
.nav__link.active::after { width: 100%; }

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

.nav__lang-toggle {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.8);
  padding: 0.4rem 0.9rem;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) ease;
  cursor: pointer;
  background: transparent;
}

.nav--solid .nav__lang-toggle {
  color: var(--royal-blue);
  border-color: var(--royal-blue-light);
}

.nav__lang-toggle:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--gold);
  color: var(--gold);
}

.nav__menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.nav--solid .nav__menu-toggle span { background: var(--charcoal); }

.nav__menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav__menu-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__menu-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── Mobile Menu ── */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--royal-blue-dark);
  z-index: calc(var(--z-nav) - 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.mobile-menu.open { transform: translateX(0); }

.mobile-menu__link {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-2xl);
  color: var(--white);
  font-weight: 600;
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out-expo), color var(--duration-fast) ease;
}

.mobile-menu.open .mobile-menu__link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu.open .mobile-menu__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.open .mobile-menu__link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.open .mobile-menu__link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.open .mobile-menu__link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.open .mobile-menu__link:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu.open .mobile-menu__link:nth-child(6) { transition-delay: 0.35s; }

.mobile-menu__link:hover { color: var(--gold); }