/* ============================================================
   导航栏下拉菜单样式 · 浮层卡片式 Mega Menu
   ============================================================ */

/* 下拉菜单容器 */
.nq-nav-dropdown {
  position: relative;
  display: inline-block;
}

.nq-nav-dropdown-trigger {
  cursor: pointer;
  user-select: none;
}

/* 导航链接箭头图标 */
.nq-nav-arrow {
  margin-left: 6px;
  font-size: 14px;
  transition: transform 0.2s ease, color 0.2s ease;
  transform-origin: center;
  display: inline-block;
}

/* 遮罩层 */
.nq-dropdown-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
}

.nq-dropdown-backdrop.nq-backdrop-show {
  opacity: 1;
  visibility: visible;
}

/* 下拉面板 —— 悬浮圆角卡片 */
.nq-dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  width: 1140px;
  max-width: 94vw;
  background: #FFFFFF;
  border: 1px solid var(--nq-border-light);
  border-radius: 20px;
  box-shadow: 0 32px 80px -24px rgba(15, 23, 42, 0.24);
  z-index: 1001;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -12px);
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0.3s;
  will-change: transform, opacity;
  pointer-events: none;
}

.nq-dropdown-panel.nq-dropdown-show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

/* 内容容器 */
.nq-dropdown-container {
  display: flex;
  min-height: 360px;
}

/* 左侧分类栏 */
.nq-dropdown-tabs {
  width: 240px;
  background: var(--nq-light);
  border-right: 1px solid var(--nq-border-light);
  padding: 26px 16px;
  flex-shrink: 0;
}

.nq-dropdown-tabs-title {
  padding: 0 12px 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--nq-text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nq-dropdown-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 14px;
  margin-bottom: 4px;
  cursor: pointer;
  border-radius: 11px;
  color: var(--nq-text-secondary);
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.nq-dropdown-tab:hover {
  color: var(--nq-primary);
  background: #FFFFFF;
}

.nq-dropdown-tab.nq-dropdown-tab-active {
  color: #FFFFFF;
  background: var(--nq-gradient-primary);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.24);
}

.nq-dropdown-tab > span:not(.nq-dropdown-badge) {
  font-size: 14px;
  font-weight: 500;
}

.nq-dropdown-tab.nq-dropdown-tab-active > span:not(.nq-dropdown-badge) {
  color: #FFFFFF;
}

/* 标签徽章 */
.nq-dropdown-badge {
  background: rgba(255, 107, 107, 0.1);
  color: var(--nq-danger);
  font-size: 10px !important;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid rgba(255, 107, 107, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* 右侧内容区 */
.nq-dropdown-content {
  flex: 1;
  display: flex;
  min-width: 0;
}

.nq-dropdown-main {
  flex: 1;
  padding: 28px 32px;
  min-width: 0;
}

/* 搜索组件 */
.nq-dropdown-search-form {
  display: flex;
  align-items: center;
  background: var(--nq-light);
  border: 1px solid var(--nq-border-light);
  border-radius: 999px;
  padding: 0;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  height: 42px;
  margin-bottom: 20px;
}

.nq-dropdown-search-form:hover,
.nq-dropdown-search-form:focus-within {
  border-color: var(--nq-primary);
  box-shadow: 0 0 0 3px var(--nq-primary-light);
}

.nq-dropdown-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 8px 18px;
  font-size: 14px;
  background: transparent;
  color: var(--nq-text-primary);
  height: 100%;
}

.nq-dropdown-search-input::placeholder {
  color: var(--nq-text-muted);
}

.nq-dropdown-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--nq-text-secondary);
  cursor: pointer;
}

.nq-dropdown-search-btn:hover {
  color: var(--nq-primary);
}

.nq-dropdown-search-btn i {
  font-size: 16px;
}

/* 产品卡片网格 */
.nq-dropdown-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.nq-dropdown-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px;
  text-decoration: none;
  background: #FFFFFF;
  border: 1px solid var(--nq-border-light);
  border-radius: 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.nq-dropdown-item:hover {
  transform: translateY(-2px);
  border-color: var(--nq-primary-light);
  box-shadow: var(--nq-shadow);
}

.nq-dropdown-item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--nq-text-primary);
  line-height: 1.5;
  transition: color 0.2s ease;
}

.nq-dropdown-item:hover .nq-dropdown-item-title {
  color: var(--nq-primary);
}

.nq-dropdown-item-desc {
  font-size: 12px;
  color: var(--nq-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 介绍卡片 */
.nq-dropdown-intro {
  width: 260px;
  margin: 20px 20px 20px 0;
  padding: 26px;
  background: var(--nq-gradient-primary);
  border-radius: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
  position: relative;
  overflow: hidden;
}

.nq-dropdown-intro::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -40%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.25), transparent 70%);
}

.nq-dropdown-intro-content {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
}

.nq-dropdown-intro-title {
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
  line-height: 1.3;
}

.nq-dropdown-intro-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  margin-bottom: 24px;
}

.nq-dropdown-intro-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: #FFFFFF;
  color: var(--nq-primary);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.nq-dropdown-intro-btn:hover {
  transform: translateY(-1px);
}

/* 内容面板显示控制 */
.nq-dropdown-content-pane {
  display: none;
}

.nq-dropdown-content-pane.nq-dropdown-pane-show,
.nq-dropdown-content-pane.nq-dropdown-pane-default {
  display: block !important;
}

/* 悬停高亮 */
.nq-nav-dropdown:hover .nq-nav-link,
.nq-nav-dropdown:hover .nq-nav-arrow {
  color: var(--nq-primary);
}

.nq-nav-dropdown.nq-dropdown-active .nq-nav-link {
  color: var(--nq-primary) !important;
}

.nq-nav-dropdown.nq-dropdown-active .nq-nav-arrow {
  transform: rotate(180deg);
  color: var(--nq-primary);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .nq-dropdown-tabs {
    width: 210px;
  }

  .nq-dropdown-intro {
    width: 220px;
  }

  .nq-dropdown-main {
    padding: 22px 24px;
  }
}

@media (max-width: 900px) {
  .nq-dropdown-intro {
    display: none;
  }
}

@media (max-width: 767px) {
  .nq-dropdown-panel {
    display: none !important;
  }

  .nq-nav-arrow {
    display: none;
  }
}