.site-header {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  height: 60px;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}
.logo img {
  display: block;
  height: 60px;
  width: auto;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  z-index: 150;
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background: white;
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.2s ease;
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 200;
}

.menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.menu-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  z-index: 201;
}

.menu-links {
  list-style: none;
  padding: 0;
  text-align: center;
}

.menu-link {
  display: block;
  padding: 1rem 2rem;
  font-size: 1.5rem;
  color: white;
  text-decoration: none;
  transition: background 0.2s;
  border-radius: 8px;
}

.menu-link:hover {
  background: rgba(255, 255, 255, 0.2);
}