/* 汉堡菜单样式 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
  position: relative;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-6);
  margin: 4px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  z-index: 999;
  padding-top: 80px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu ul {
  list-style: none;
  padding: 20px;
  margin: 0;
}

.mobile-menu li {
  border-bottom: 1px solid var(--gray-2);
}

.mobile-menu a {
  display: block;
  padding: 16px 0;
  font-size: 18px;
  color: var(--gray-6);
  text-decoration: none;
  font-weight: 500;
}

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

/* 移动端显示汉堡菜单 */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-links {
    display: none !important;
  }
}