BlackFruit-UI/css/nav-mega-menu.css

/* ============================================================
   顶部导航下拉菜单样式 - akile.io 深色毛玻璃风格
   ============================================================ */

/* 下拉容器 */
.nav-cont {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(14, 16, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
  z-index: 1000;
  overflow: hidden;
  transition: height 0.25s ease-out;
  height: 0;
}

/* Mega Menu 容器 */
.nav-cont-menu.mega-menu {
  display: none;
  height: 100%;
}

/* inner 布局 */
.nav-content {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  min-height: 320px;
  padding: 0;
}

/* ── 左侧二级菜单栏 ── */
.nav-left-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.03);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  padding: 16px 8px;
  overflow-y: auto;
}

/* 二级分类项 */
.nav-category-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  color: rgba(203, 213, 225, 0.75);
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  user-select: none;
}

.nav-category-item:hover,
.nav-category-item.active {
  background: rgba(59, 130, 246, 0.12);
  color: #93C5FD;
}

.nav-category-item .category-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-category-item .category-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-category-name {
  font-weight: 500;
}

.nav-category-desc {
  font-size: 12px;
  color: rgba(148, 163, 184, 0.6);
  margin-top: 2px;
  display: block;
}

/* ── 右侧三级菜单区域 ── */
.nav-right-content {
  flex: 1;
  padding: 20px 28px;
  overflow-y: auto;
}

/* 三级菜单面板 */
.nav-third-panel {
  display: none;
}

.nav-third-panel.active {
  display: block;
  animation: navPanelFadeIn 0.2s ease;
}

/* 三级菜单标题 */
.nav-third-title {
  font-size: 13px;
  font-weight: 600;
  color: rgba(148, 163, 184, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* 三级菜单网格 */
.nav-third-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px 8px;
}

/* 三级菜单项容器 */
.nav-cont-menu .nav-third-item {
  margin: 0;
  padding: 0;
}

/* 三级菜单链接 - akile 风格：纯行 hover，无卡片 */
.nav-cont-menu .nav-third-grid .nav-third-link,
.nav-third-panel .nav-third-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  color: rgba(226, 232, 240, 0.85);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  box-sizing: border-box;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  /* 无边框、无卡片背景 */
  background: transparent;
  border: none;
}

.nav-cont-menu .nav-third-grid .nav-third-link::before,
.nav-third-panel .nav-third-link::before {
  content: none; /* 移除旧的 › 箭头前缀 */
}

.nav-cont-menu .nav-third-grid .nav-third-link:hover,
.nav-third-panel .nav-third-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

/* ── 国旗图标 ── */
.country-flag {
  width: 22px;
  height: 16px;
  flex-shrink: 0;
  vertical-align: middle;
  object-fit: cover;
  border-radius: 3px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* ── 只有二级菜单时的横向网格（无三级） ── */
.nav-simple-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 4px 8px;
  padding: 20px 28px;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
}

.nav-simple-grid .nav-simple-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: rgba(226, 232, 240, 0.85);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
  /* 无卡片边框背景 */
  background: transparent;
  border: none;
}

.nav-simple-grid .nav-simple-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-simple-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-simple-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-simple-title {
  font-size: 14px;
  font-weight: 500;
  color: inherit;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-simple-desc {
  font-size: 12px;
  color: rgba(148, 163, 184, 0.65);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

/* ── 菜单底部「更多」区域 ── */
.nav-menu-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 12px 28px;
}

.nav-menu-footer a {
  font-size: 13px;
  color: rgba(148, 163, 184, 0.7);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-menu-footer a:hover {
  color: #93C5FD;
}

/* ── 空菜单占位 ── */
.nav-cont-menu.nav-cont-empty {
  display: none;
}

/* ── 动画 ── */
@keyframes navPanelFadeIn {
  from {
    opacity: 0;
    transform: translateX(8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── 响应式 ── */
@media (max-width: 768px) {
  .nav-cont {
    display: none !important;
  }

  .nav-content {
    flex-direction: column;
    min-height: auto;
  }

  .nav-left-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-right-content {
    padding: 16px;
  }

  .nav-third-grid {
    grid-template-columns: 1fr;
  }
}