.site-header {
  background: rgba(0, 170, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 0.75rem 1.5rem;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999;
  box-shadow: 0 0 20px rgba(0, 170, 255, 0.3);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.logo {
  display: flex;
}

.logo img {
  height: 72px;
  filter: drop-shadow(0 0 5px var(--primary));
}

.logo h1 {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s, text-shadow 0.3s;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle .bar {
  width: 100%;
  height: 3px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.open .top { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.open .middle { opacity: 0; }
.menu-toggle.open .bottom { transform: rotate(-45deg) translate(5px, -5px); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s, text-shadow 0.3s;
}

.nav-links li a:hover {
  color: var(--primary);
  text-shadow: 0 0 8px var(--primary);
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .nav-links {
    flex-direction: column;
    background: rgba(0, 170, 255, 0.1);
    backdrop-filter: blur(10px);
    position: absolute;
    top: 100%;
    right: 1.5rem;
    width: 200px;
    padding: 1rem;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 0 15px rgba(0, 170, 255, 0.3);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
  }
  .nav-links.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .nav-links { gap: 1rem; font-size: 0.95rem; }
  .logo img { height: 42px; }
}