/**
 * AUD Gaming - 头部样式
 * 包含网站头部、导航和搜索相关样式
 */

/* 头部容器 */
.site-header,
.header {
  position: relative;
  width: 100%;
  background-color: var(--secondary-color) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-2) 0;
  z-index: var(--z-index-header);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

/* 当用户向下滚动时才使用sticky定位 */
.header-scrolled {
  position: sticky;
  top: 0;
  padding: var(--spacing-1) 0;
  box-shadow: var(--shadow-lg);
}

/* 头部顶部信息条 */
.header-topbar {
  background-color: var(--primary-darker);
  color: var(--text-light);
  font-size: 0.875rem;
  padding: var(--spacing-1) 0;
}

/* 头部内容 */
.header-content {
  display: flex;
  flex-direction: column;
}

/* 头部顶部 */
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-2) 0;
}

/* 菜单开关按钮 */
.menu-toggle {
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  display: none; /* 在移动端时显示 */
}

/* LOGO 样式 */
.logo {
  display: flex;
  align-items: center;
}

.logo img {
  max-height: 50px;
  transition: max-height var(--transition-normal);
}

/* 注册登录按钮 */
.auth-buttons {
  display: flex;
  gap: var(--spacing-2);
}

.auth-button {
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.register-button {
  background-color: var(--accent-color);
  color: var(--text-light);
}

.register-button:hover {
  background-color: var(--accent-dark);
  text-decoration: none;
}

.login-button {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.login-button:hover {
  background-color: var(--primary-darker);
  text-decoration: none;
}

/* 主菜单容器 */
.main-menu-container {
  background: var(--bg-gradient-secondary) !important;
  padding: var(--spacing-1) 0;
}

/* 主菜单 */
.main-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-4);
}

.main-menu li {
  position: relative;
}

.main-menu a {
  color: var(--text-light) !important;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  padding: var(--spacing-2) 0;
  display: block;
  position: relative;
  transition: color var(--transition-fast);
}

.main-menu a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.main-menu a:hover,
.main-menu .current-menu-item a {
  color: var(--accent-color) !important;
  text-decoration: none;
}

.main-menu a:hover:after,
.main-menu .current-menu-item a:after {
  width: 100%;
}

.topbar-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-contact {
  display: flex;
  gap: var(--spacing-3);
}

.topbar-contact a {
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.topbar-contact a:hover {
  color: var(--accent-color);
  text-decoration: none;
}

.topbar-social {
  display: flex;
  gap: var(--spacing-2);
}

.topbar-social a {
  color: var(--text-light);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.topbar-social a:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
}

/* 头部主体 */
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-2) 0;
}

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo img {
  max-height: 50px;
  transition: max-height var(--transition-normal);
}

.header-scrolled .site-logo img {
  max-height: 40px;
}

.site-title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: var(--font-weight-bold);
  color: var(--text-light);
  margin-left: var(--spacing-2);
}

/* 主导航 */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-4);
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  color: var(--text-light);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  padding: var(--spacing-2) 0;
  display: block;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-menu a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.nav-menu a:hover,
.nav-menu .current-menu-item a {
  color: var(--accent-color);
}

.nav-menu a:hover:after,
.nav-menu .current-menu-item a:after {
  width: 100%;
}

/* 下拉菜单 */
.nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 200px;
  padding: var(--spacing-2);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: var(--z-index-dropdown);
}

.nav-menu li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-menu .sub-menu li {
  margin: 0;
}

.nav-menu .sub-menu a {
  padding: var(--spacing-2);
  display: block;
  border-radius: var(--radius-sm);
}

.nav-menu .sub-menu a:after {
  display: none;
}

.nav-menu .sub-menu a:hover {
  background-color: var(--bg-darker);
}

/* 下拉菜单指示器 */
.has-children > a {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.has-children > a:after {
  content: '▾';
  display: inline-block;
  font-size: 10px;
  margin-left: 5px;
  position: static;
  width: auto;
  height: auto;
  background-color: transparent;
}

/* 搜索按钮 */
.header-search-toggle {
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-1);
  margin-left: var(--spacing-3);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.header-search-toggle:hover {
  color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.1);
}

/* 搜索表单 */
.header-search-form {
  position: absolute;
  top: 100%;
  right: 0;
  width: 300px;
  padding: var(--spacing-3);
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: var(--z-index-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
}

.header-search-form.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-form {
  display: flex;
  width: 100%;
}

.search-form input[type="text"] {
  width: 100%;
  padding: var(--spacing-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background-color: var(--bg-light);
  color: var(--text-dark);
  font-size: 1rem;
}

.search-form button {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: none;
  padding: 0 var(--spacing-3);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.search-form button:hover {
  background-color: var(--primary-darker);
}

/* 移动导航触发器 */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-1);
}

/* 侧边导航 */
.side-nav {
  position: fixed;
  top: 0;
  left: -300px;
  width: 300px;
  height: 100vh;
  background-color: var(--secondary-color) !important;
  z-index: var(--z-index-mobile-nav);
  padding: var(--spacing-4);
  transition: left var(--transition-normal);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.side-nav.active {
  left: 0;
}

.side-nav-close {
  position: absolute;
  top: var(--spacing-2);
  right: var(--spacing-2);
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
}

.side-nav-logo {
  margin-bottom: var(--spacing-5);
  text-align: center;
}

.side-nav-logo img {
  max-height: 50px;
}

.side-nav-menu {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-5) 0;
}

.side-nav-menu li {
  margin-bottom: var(--spacing-2);
}

.side-nav-menu a {
  color: var(--text-light);
  font-size: 1rem;
  text-decoration: none;
  display: block;
  padding: var(--spacing-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.side-nav-menu a:hover {
  background-color: var(--bg-darker);
  color: var(--accent-color);
}

.side-nav-auth {
  margin-top: auto;
}

.side-nav-auth .auth-buttons {
  flex-direction: column;
  gap: var(--spacing-2);
}

/* 页面覆盖层 */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-index-mobile-nav) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* 响应式样式 */
@media (max-width: 991px) {
  .mobile-nav-toggle {
    display: block;
  }

  .main-navigation {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: var(--bg-dark);
    z-index: var(--z-index-mobile-nav);
    padding: var(--spacing-4);
    transition: right var(--transition-normal);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .main-navigation.active {
    right: 0;
  }

  .nav-close {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
  }

  .nav-menu {
    flex-direction: column;
    gap: 0;
    margin-top: var(--spacing-5);
  }

  .nav-menu a {
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background-color: transparent;
    padding: 0 0 0 var(--spacing-3);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }

  .nav-menu .sub-menu.active {
    max-height: 500px;
  }

  .has-children > a {
    display: flex;
    justify-content: space-between;
  }

  .sub-menu-toggle {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--spacing-1);
  }

  .header-search-toggle {
    margin-right: var(--spacing-3);
  }

  .header-search-form {
    width: 100%;
    left: 0;
  }
  
  .main-menu-container {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 767px) {
  .topbar-info {
    flex-direction: column;
    gap: var(--spacing-2);
  }

  .topbar-contact {
    flex-direction: column;
    gap: var(--spacing-1);
    align-items: center;
  }

  .site-logo img {
    max-height: 40px;
  }

  .site-title {
    font-size: 1.25rem;
  }

  .header-main {
    padding: var(--spacing-1) 0;
  }
  
  .auth-buttons {
    display: none;
  }
}