/* 基础样式 */
.header-component {
  --primary-color: #3A86FF;
  --primary-light: #E6F0FF;
  --text-color: #2D3748;
  --text-light: #5F6C7B;
  --bg-color: #FFFFFF;
  --border-color: #EDF2F7;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  --radius: 8px;
  --transition: all 0.2s ease-in-out;
  
  background-color: var(--bg-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

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

/* Logo 样式 */
.logo img {
  height: 40px;
  width: auto;
  transition: var(--transition);
}

.logo:hover img {
  opacity: 0.9;
}

/* 主导航样式 */
.main-nav ul {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  position: relative;
  padding: 8px 0;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link.active {
  color: var(--primary-color);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

/* 搜索框样式 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  padding: 8px 15px;
  padding-right: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  width: 200px;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.search-btn {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.search-btn svg {
  transition: var(--transition);
}

.search-btn:hover svg {
  stroke: var(--primary-color);
}

/* 用户操作按钮样式 */
.user-actions {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-login {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-login:hover {
  background-color: var(--primary-light);
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #2B75E6;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn svg {
  transition: var(--transition);
}

.mobile-menu-btn:hover svg {
  stroke: #2B75E6;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .main-nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .header-actions {
    gap: 10px;
  }
  
  .search-input {
    width: 150px;
  }
}

@media (max-width: 576px) {
  .header-container {
    padding: 0 15px;
  }
  
  .logo img {
    height: 32px;
  }
  
  .search-input {
    display: none;
  }
  
  .search-btn {
    position: static;
  }
  
  .btn {
    padding: 6px 12px;
    font-size: 13px;
  }
}