/* ==================== HEADER / NAV ==================== */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid var(--lime);
  transition: background 0.3s;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 44px;
  height: 44px;
  background: var(--lime);
  color: var(--dark);
  font-weight: 900;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.logo-text {
  color: var(--white);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.2;
}

.logo-text span { color: var(--lime); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--gray);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 600;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--lime);
  transition: width 0.3s;
}

.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-phone {
  color: var(--lime);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
  transition: opacity 0.2s;
}
.nav-phone:hover { opacity: 0.8; }

.lang-switcher {
  display: flex;
  gap: 6px;
}

.lang-btn {
  background: transparent;
  border: 1px solid #444;
  color: var(--gray);
  padding: 4px 9px;
  font-size: 0.75rem;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
  text-transform: uppercase;
  font-weight: 600;
}

.lang-btn.active,
.lang-btn:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

/* ==================== MOBILE NAV ==================== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 70px; left: 0; right: 0;
  background: rgba(15,23,42,0.98);
  z-index: 999;
  padding: 20px;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid #333;
}

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

.mobile-menu a {
  color: var(--gray);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 10px 0;
  border-bottom: 1px solid #222;
  letter-spacing: 0.5px;
}

.mobile-menu a:hover { color: var(--lime); }

@media (max-width: 768px) {
  .nav-links, .nav-right { display: none; }
  .hamburger { display: flex; }
}