/* ============================================================
   qyhot 论坛顶部导航 —— ecysq ls-header 一比一复刻样式
   图标字体引用 /chat/static/fonts/remixicon/remixicon.sub.woff2
   ============================================================ */
/* remix 图标 @font-face 与字形映射由 remixicon.min.css 提供 */

:root {
  --ls-primary: #3b82f6;
  --ls-primary-hover: #2563eb;
  --ls-primary-rgb: 59, 130, 246;
  --ls-primary-light: rgba(59, 130, 246, 0.1);
  --ls-secondary: #6b7280;
  --ls-success: #10b981;
  --ls-success-light: #ecfdf5;
  --ls-warning: #f59e0b;
  --ls-warning-light: #fffbeb;
  --ls-danger: #ef4444;
  --ls-danger-light: #fef2f2;
  --ls-bg: #f8fafc;
  --ls-bg-hover: #f1f5f9;
  --ls-bg-light: #f8fafc;
  --ls-bg-white: #ffffff;
  --ls-card-bg: #ffffff;
  --ls-border: #e5e7eb;
  --ls-border-light: #f3f4f6;
  --ls-text: #1f2937;
  --ls-text-primary: #1f2937;
  --ls-text-secondary: #4b5563;
  --ls-text-muted: #9ca3af;
  --ls-radius-sm: 4px;
  --ls-radius-md: 6px;
  --ls-radius-lg: 8px;
  --ls-radius-xl: 12px;
  --ls-radius-full: 9999px;
  --ls-shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
  --ls-shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
  --ls-transition: 0.15s ease;
  --ls-header-height: 68px;
  --ls-border-radius-avatar: 999px;
}

/* 固定头部让位：Discuz 内容区下移 */
body.dz_tbnvb {
  padding-top: var(--ls-header-height);
}
body.dz_tbnvb #wp.wp {
  margin-top: 0;
}

/* ==================== 头部容器 ==================== */
.ls-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--ls-header-height);
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--ls-border-light);
  z-index: 10000;
  box-sizing: border-box;
}
.ls-header-inner {
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}
.ls-header-left {
  display: flex;
  align-items: center;
  gap: 32px;
  min-width: 0;
}
.ls-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ==================== Logo ==================== */
.ls-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.ls-logo-img {
  height: 36px;
  width: auto;
  max-height: 36px;
  max-width: 180px;
}
.ls-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--ls-text-primary);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

/* ==================== 主导航 ==================== */
.ls-main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.ls-nav-item {
  position: relative;
}
.ls-nav-item > a {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ls-text-secondary);
  text-decoration: none;
  border-radius: var(--ls-radius-md);
  transition: var(--ls-transition);
  white-space: nowrap;
}
.ls-nav-item > a:hover {
  color: var(--ls-text-primary);
  background: var(--ls-bg-hover);
}
.ls-nav-item.active > a {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}
.ls-nav-item > a > span:not(.ls-nav-icon):not(.ls-nav-badge) {
  position: relative;
}
.ls-nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ls-nav-icon i {
  font-size: 18px;
}
.ls-nav-badge {
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  background: #ef4444;
  border-radius: var(--ls-radius-full);
  margin-inline-start: 4px;
  line-height: 1.4;
}
.ls-arrow {
  font-size: 14px;
  color: var(--ls-text-muted);
  transition: transform 0.2s ease;
}
.ls-nav-item.ls-has-dropdown:hover .ls-arrow {
  transform: rotate(180deg);
}

/* ==================== 下拉菜单 ==================== */
.ls-hd-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--ls-bg-white);
  border-radius: var(--ls-radius-xl);
  box-shadow: var(--ls-shadow-lg);
  border: 1px solid var(--ls-border-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--ls-transition);
  z-index: 100;
}
.ls-hd-dropdown::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}
.ls-has-dropdown:hover > .ls-hd-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.ls-hd-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ls-text-secondary);
  text-decoration: none;
  transition: var(--ls-transition);
}
.ls-hd-dropdown-item:first-child {
  border-radius: calc(var(--ls-radius-xl) - 1px) calc(var(--ls-radius-xl) - 1px) 0 0;
}
.ls-hd-dropdown-item:last-child {
  border-radius: 0 0 calc(var(--ls-radius-xl) - 1px) calc(var(--ls-radius-xl) - 1px);
}
.ls-hd-dropdown-item:hover {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}
.ls-hd-dropdown-item i {
  font-size: 18px;
  opacity: 0.7;
  min-width: 18px;
}
.ls-hd-dropdown-divider {
  height: 1px;
  margin: 6px 0;
  background: var(--ls-border-light);
}
.ls-item-tag {
  margin-left: auto;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  border-radius: var(--ls-radius-full);
  line-height: 1.4;
}
.ls-item-tag.hot { background: linear-gradient(135deg, #f5222d, #fa8c16); }
.ls-item-tag.new { background: linear-gradient(135deg, #52c41a, #13c2c2); }
.ls-item-dot {
  width: 6px;
  height: 6px;
  margin-left: auto;
  background: #ef4444;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--ls-bg-white);
}

/* ==================== Mega 下拉 ==================== */
.ls-hd-dropdown-mega {
  width: 520px;
  padding: 16px;
  box-sizing: border-box;
}
.ls-hd-dropdown-section {
  margin-bottom: 16px;
}
.ls-hd-dropdown-section:last-child {
  margin-bottom: 0;
}
.ls-hd-dropdown-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--ls-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
  padding-inline-start: 4px;
}
.ls-hd-dropdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.ls-hd-dropdown-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  text-decoration: none;
  border-radius: var(--ls-radius-lg);
  transition: var(--ls-transition);
  position: relative;
}
.ls-hd-dropdown-card:hover {
  background: var(--ls-bg-hover);
}
.ls-card-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ls-radius-lg);
  font-size: 20px;
  color: #fff;
}
.ls-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ls-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ls-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ls-card-desc {
  font-size: 12px;
  color: var(--ls-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ls-card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  border-radius: var(--ls-radius-full);
  line-height: 1.4;
}
.ls-card-badge.new { background: linear-gradient(135deg, #52c41a, #13c2c2); }
.ls-card-badge.beta { background: linear-gradient(135deg, #a855f7, #9333ea); }

/* 热门内容区（静态展示 Discuz 热门/最新主题入口） */
.ls-hot-section .ls-hot-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ls-hot-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-size: 13px;
  color: var(--ls-text-secondary);
  text-decoration: none;
  border-radius: var(--ls-radius-md);
  transition: var(--ls-transition);
}
.ls-hot-link:hover {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}
.ls-hot-link i {
  font-size: 16px;
  color: var(--ls-primary);
  opacity: 0.8;
}

/* ==================== 右侧：搜索 ==================== */
.ls-search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--ls-text-muted);
  background: var(--ls-bg-hover);
  border-radius: var(--ls-radius-full);
  cursor: pointer;
  transition: var(--ls-transition);
  text-decoration: none;
  border: none;
}
.ls-search-trigger:hover {
  background: var(--ls-bg-light);
  color: var(--ls-text-secondary);
}
.ls-search-trigger i {
  font-size: 18px;
}

/* ==================== 右侧：图标按钮 ==================== */
.ls-icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--ls-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--ls-radius-md);
  cursor: pointer;
  transition: var(--ls-transition);
  text-decoration: none;
}
.ls-icon-btn:hover {
  color: var(--ls-text-primary);
  background: var(--ls-bg-hover);
}
.ls-count-badge {
  position: absolute;
  top: -2px;
  right: -5px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: #ef4444;
  border-radius: var(--ls-radius-full);
  border: 2px solid var(--ls-bg-white);
  box-sizing: border-box;
}
.ls-count-badge.hidden {
  display: none;
}

/* ==================== 消息/通知 下拉 ==================== */
.ls-messages, .ls-notifications, .ls-create, .ls-user {
  position: relative;
}
.ls-hd-dropdown-messages {
  width: 380px;
  right: 0;
  left: auto;
  overflow: hidden;
}
.ls-hd-dropdown-notifications {
  width: 420px;
  right: 0;
  left: auto;
  overflow: hidden;
}
.ls-hd-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ls-border-light);
}
.ls-hd-dropdown-header span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ls-text-primary);
}
.ls-hd-dropdown-header span i {
  font-size: 18px;
  color: var(--ls-primary);
}
.ls-mark-read {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--ls-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--ls-radius-sm);
  transition: var(--ls-transition);
}
.ls-mark-read:hover {
  background: var(--ls-primary-light);
}
.ls-mark-read i {
  font-size: 14px;
}
.ls-msg-empty, .ls-notify-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--ls-text-muted);
}
.ls-msg-empty i, .ls-notify-empty i {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}
.ls-msg-empty span, .ls-notify-empty span {
  font-size: 14px;
}
.ls-hd-dropdown-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ls-primary);
  text-align: center;
  text-decoration: none;
  border-top: 1px solid var(--ls-border-light);
  border-radius: 0 0 calc(var(--ls-radius-xl) - 1px) calc(var(--ls-radius-xl) - 1px);
  transition: var(--ls-transition);
}
.ls-hd-dropdown-footer:hover {
  background: var(--ls-primary-light);
}
.ls-hd-dropdown-footer i {
  font-size: 14px;
}

/* ==================== 创作按钮 ==================== */
.ls-create-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--ls-primary);
  border: none;
  border-radius: var(--ls-radius-full);
  cursor: pointer;
  transition: var(--ls-transition);
  text-decoration: none;
}
.ls-create-btn:hover {
  background: var(--ls-primary-hover);
  box-shadow: 0 4px 12px rgba(var(--ls-primary-rgb), 0.3);
}
.ls-create-btn i {
  font-size: 18px;
}
.ls-hd-dropdown-create {
  width: 320px;
  right: 0;
  left: auto;
  padding: 12px;
  box-sizing: border-box;
}
.ls-create-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.ls-create-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 8px;
  text-decoration: none;
  border-radius: var(--ls-radius-lg);
  transition: var(--ls-transition);
  position: relative;
}
.ls-create-item:hover {
  background: var(--ls-bg-hover);
}
.ls-create-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ls-radius-lg);
  font-size: 22px;
  color: #fff;
}
.ls-create-item span {
  font-size: 13px;
  color: var(--ls-text-primary);
}
.ls-create-footer {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--ls-border-light);
}
.ls-create-footer a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  font-size: 13px;
  color: var(--ls-text-secondary);
  text-decoration: none;
  border-radius: var(--ls-radius-md);
  transition: var(--ls-transition);
}
.ls-create-footer a:hover {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}

/* ==================== 用户中心 ==================== */
.ls-user-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: var(--ls-border-radius-avatar, 50%);
  cursor: pointer;
  transition: var(--ls-transition);
  text-decoration: none;
}
.ls-user-trigger:hover {
  background: var(--ls-bg-hover);
}
.ls-user-trigger > i {
  font-size: 16px;
  color: var(--ls-text-muted);
  margin-inline-end: 4px;
}
.ls-avatar {
  position: relative;
  flex-shrink: 0;
  display: inline-block;
  line-height: 0;
}
.ls-avatar img.avatar,
.ls-avatar img.user_avatar {
  border-radius: var(--ls-border-radius-avatar, 50%);
  object-fit: cover;
  display: block;
  width: 100%;
  height: 100%;
}
.ls-avatar-sm { width: 36px; height: 36px; }
.ls-avatar-sm img.avatar,
.ls-avatar-sm img.user_avatar { width: 36px; height: 36px; }
.ls-avatar-xl { width: 48px; height: 48px; }
.ls-avatar-xl img.avatar,
.ls-avatar-xl img.user_avatar { width: 48px; height: 48px; }
.ls-hd-dropdown-user {
  display: flex;
  flex-direction: column;
  min-width: 280px;
  max-width: 350px;
  right: 0;
  left: auto;
  overflow: hidden;
  padding: 0;
}
.ls-user-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
}
.ls-user-info {
  flex: 1;
  min-width: 0;
}
.ls-user-name-row {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 4px;
}
.ls-user-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ls-text-primary);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ls-user-name:hover {
  color: var(--ls-primary);
}
.ls-user-meta {
  display: flex;
  align-items: center;
  gap: 6px;
}
.ls-mark {
  color: #fff;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  border-radius: 3px;
  gap: 3px;
  padding: 0 5px;
  line-height: 16px;
  font-weight: 200;
}
.ls-user-goto {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ls-text-muted);
  background: var(--ls-bg-hover);
  border-radius: var(--ls-radius-full);
  transition: var(--ls-transition);
  flex-shrink: 0;
  text-decoration: none;
}
.ls-user-goto:hover {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}
.ls-user-goto i {
  font-size: 16px;
}
.ls-exp-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px 12px;
}
.ls-exp-bar {
  flex: 1;
  height: 4px;
  background: var(--ls-bg-hover);
  border-radius: var(--ls-radius-full);
  overflow: hidden;
  position: relative;
}
.ls-exp-fill {
  width: 0;
  height: 100%;
  border-radius: var(--ls-radius-full);
  background: linear-gradient(90deg, #22c55e, #4ade80, #22c55e);
  background-size: 200% 100%;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  animation: lsExpShine 2.4s linear infinite;
}
.ls-has-dropdown:hover .ls-exp-fill {
  width: var(--exp-pct, 0%);
}
.ls-exp-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 30%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  animation: lsExpSweep 1.8s ease-in-out infinite;
}
@keyframes lsExpShine {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@keyframes lsExpSweep {
  0% { left: -30%; }
  60%, 100% { left: 100%; }
}
.ls-exp-text {
  font-size: 11px;
  color: var(--ls-text-muted);
  white-space: nowrap;
}
.ls-stats-grid {
  display: flex;
  margin: 0 12px 8px;
  background: var(--ls-bg-light);
  border-radius: var(--ls-radius-lg);
  overflow: hidden;
}
.ls-stat-box {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 4px;
  text-decoration: none;
  transition: var(--ls-transition);
}
.ls-stat-box:hover {
  background: var(--ls-bg-hover);
}
.ls-stat-num {
  font-size: 16px;
  font-weight: 700;
  color: var(--ls-text-primary);
}
.ls-stat-label {
  font-size: 12px;
  color: var(--ls-text-muted);
}
.ls-user-menu {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 8px;
}
.ls-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ls-text-secondary);
  text-decoration: none;
  border-radius: var(--ls-radius-md);
  transition: var(--ls-transition);
}
.ls-menu-item i {
  font-size: 17px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
  color: var(--ls-text-muted);
}
.ls-menu-item:hover {
  color: var(--ls-primary);
  background: var(--ls-primary-light);
}
.ls-menu-item:hover i {
  color: var(--ls-primary);
}
.ls-menu-item.logout {
  color: var(--ls-danger);
}
.ls-menu-item.logout i {
  color: var(--ls-danger);
}
.ls-menu-item.logout:hover {
  background: var(--ls-danger-light);
}
.ls-menu-divider {
  height: 1px;
  margin: 6px 0;
  background: var(--ls-border-light);
}

/* ==================== 未登录：登录/注册 ==================== */
.ls-auth-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ls-login-btn {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ls-primary);
  text-decoration: none;
  border-radius: var(--ls-radius-full);
  transition: var(--ls-transition);
}
.ls-login-btn:hover {
  background: var(--ls-primary-light);
}
.ls-register-btn {
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--ls-primary);
  text-decoration: none;
  border-radius: var(--ls-radius-full);
  transition: var(--ls-transition);
}
.ls-register-btn:hover {
  background: var(--ls-primary-hover);
}

/* ==================== Discuz 残留元素隐藏 ==================== */
.ls-header .dz_layer_dl,
.ls-header .clear {
  display: none;
}
#qyhot-ls-header ~ #mu,
#qyhot-ls-header ~ .wp#hds {
  /* 子导航保留给 Discuz 内部菜单 JS 使用 */
}

/* 手机端隐藏部分头部元素（Discuz 移动模板不加载此 css 时不生效） */
@media (max-width: 1024px) {
  .ls-header-inner {
    padding: 0 12px;
  }
  .ls-header-left {
    gap: 12px;
  }
  .ls-main-nav .ls-nav-item .ls-nav-icon {
    display: none;
  }
  .ls-nav-item > a {
    padding: 8px 8px;
  }
  .ls-search-trigger span,
  .ls-create-btn span {
    display: none;
  }
}