/*!
 * DATALAB 多语言切换器 + RTL 适配
 * 与现有深色玻璃拟态导航保持同一视觉语言
 * ------------------------------------------------------------------ */

/* ===================== 通用变量 ===================== */
.lang-switch {
  --lang-primary: #6b4cff;
  --lang-primary-light: #8b6fff;
  --lang-bg: rgba(18, 24, 43, .98);
  --lang-line: rgba(255, 255, 255, .08);
  --lang-text: #ffffff;
  --lang-muted: rgba(255, 255, 255, .7);
  position: relative;
  margin-left: 10px;
  font-family: inherit;
}

/* ===================== 桌面端：胶囊按钮 ===================== */
.lang-switch--dropdown .lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 13px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .04);
  color: var(--lang-text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color .3s cubic-bezier(.4, 0, .2, 1),
              background .3s cubic-bezier(.4, 0, .2, 1),
              transform .3s cubic-bezier(.4, 0, .2, 1),
              box-shadow .3s cubic-bezier(.4, 0, .2, 1);
}

.lang-switch--dropdown .lang-toggle:hover,
.lang-switch--dropdown.is-open .lang-toggle {
  border-color: var(--lang-primary);
  background: rgba(107, 76, 255, .16);
  box-shadow: 0 6px 20px rgba(107, 76, 255, .28);
  transform: translateY(-1px);
}

.lang-switch--dropdown .lang-toggle:focus-visible {
  outline: 2px solid var(--lang-primary-light);
  outline-offset: 2px;
}

.lang-globe {
  width: 17px;
  height: 17px;
  color: var(--lang-primary-light);
  transition: transform .5s cubic-bezier(.22, .61, .36, 1);
}

.lang-switch--dropdown .lang-toggle:hover .lang-globe,
.lang-switch--dropdown.is-open .lang-globe {
  transform: rotate(180deg);
  color: #fff;
}

.lang-current {
  min-width: 22px;
  text-align: left;
  font-variant-numeric: tabular-nums;
}

.lang-chevron {
  width: 13px;
  height: 13px;
  opacity: .65;
  transition: transform .3s ease;
}

.lang-switch--dropdown.is-open .lang-chevron {
  transform: rotate(180deg);
}

/* ===================== 桌面端：下拉浮层 ===================== */
.lang-menu {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 224px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--lang-line);
  background: var(--lang-bg);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .28s ease, transform .28s cubic-bezier(.4, 0, .2, 1), visibility .28s;
  z-index: 1000000;
}

.lang-switch--dropdown.is-open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu .lang-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--lang-muted);
  font-size: 14px;
  text-decoration: none;
  transition: color .25s ease, background .25s ease, padding-left .25s ease;
}

.lang-menu .lang-item:hover {
  color: #fff;
  background: rgba(107, 76, 255, .15);
  padding-left: 16px;
}

.lang-menu .lang-item.is-active {
  color: #fff;
  background: rgba(107, 76, 255, .12);
}

.lang-menu .lang-item.is-active::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 50%;
  width: 3px;
  height: 18px;
  margin-top: -9px;
  border-radius: 2px;
  background: linear-gradient(180deg, #4a6fff, #a855f7);
}

.lang-badge {
  flex: 0 0 auto;
  min-width: 30px;
  padding: 3px 0;
  border-radius: 5px;
  border: 1px solid rgba(255, 255, 255, .12);
  background: rgba(255, 255, 255, .05);
  color: var(--lang-primary-light);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-align: center;
}

.lang-item.is-active .lang-badge {
  border-color: rgba(107, 76, 255, .55);
  background: rgba(107, 76, 255, .22);
  color: #fff;
}

.lang-name {
  flex: 1 1 auto;
  white-space: nowrap;
}

.lang-check {
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  color: var(--lang-primary-light);
}

/* ===================== 移动端导航面板内的语言区 ===================== */
.lang-switch--list {
  margin: 22px 0 4px;
}

.lang-list-title {
  margin: 0 0 12px;
  color: var(--lang-primary-light);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mobile-nav .lang-grid > a.lang-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  background: rgba(255, 255, 255, .04);
  color: rgba(255, 255, 255, .82);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color .25s ease, background .25s ease, color .25s ease, transform .25s ease;
}

.mobile-nav .lang-grid > a.lang-chip:hover,
.mobile-nav .lang-grid > a.lang-chip:active {
  border-color: var(--lang-primary);
  background: rgba(107, 76, 255, .16);
  color: #fff;
  transform: translateY(-1px);
}

.mobile-nav .lang-grid > a.lang-chip.is-active {
  border-color: var(--lang-primary);
  background: rgba(107, 76, 255, .22);
  color: #fff;
}

/* ===================== 阿拉伯语 RTL 适配（尽力适配） ===================== */
html.i18n-rtl body {
  direction: rtl;
}
html.i18n-rtl .header .nav {
  flex-direction: row-reverse;
}
html.i18n-rtl .header-inner {
  flex-direction: row-reverse;
}
html.i18n-rtl .header .nav-item.has-dropdown > .nav-link::after {
  margin-left: 0;
  margin-right: 2px;
}
html.i18n-rtl .header .dropdown {
  left: auto;
  right: 0;
}
html.i18n-rtl .header .dropdown a:hover {
  padding-left: 14px;
  padding-right: 18px;
}
html.i18n-rtl .header .dropdown-mega {
  left: auto;
  right: -180px;
}
html.i18n-rtl .lang-switch--dropdown .lang-menu {
  right: auto;
  left: 0;
}
html.i18n-rtl .lang-menu .lang-item.is-active::before {
  left: auto;
  right: 3px;
}
html.i18n-rtl .mobile-nav {
  text-align: right;
}
html.i18n-rtl .footer_area,
html.i18n-rtl .footer_area .text-center {
  text-align: right;
}
html.i18n-rtl .footer_area .footer_links a::after {
  left: auto;
  right: 0;
  transform-origin: right center;
}
html.i18n-rtl .footer_area .footer_links a:hover,
html.i18n-rtl .footer_area .footer_links a:focus {
  transform: translateX(-6px);
}
html.i18n-rtl .fa-arrow-right:before,
html.i18n-rtl .fa-long-arrow-right:before,
html.i18n-rtl .fa-angle-right:before,
html.i18n-rtl .fa-chevron-right:before {
  content: "\f060";
}
html.i18n-rtl .fa-arrow-left:before,
html.i18n-rtl .fa-angle-left:before,
html.i18n-rtl .fa-chevron-left:before {
  content: "\f061";
}
html.i18n-rtl [dir="ltr"],
html.i18n-rtl .force-ltr {
  direction: ltr;
  text-align: left;
}

/* 阿拉伯语字体回退：优先系统阿拉伯字体 */
html.i18n-rtl body {
  font-family: "Noto Kufi Arabic", "Segoe UI", Tahoma, Arial, sans-serif;
}

/* RTL 下首屏轮播修正：
   第三方 slick 轮播按 LTR 计算轨道偏移，若整体继承 direction:rtl 会导致
   幻灯片全部被推到可视区之外（首屏空白）。此处让轮播内部布局回到 LTR，
   仅让幻灯片内的文字保持 RTL 右对齐。 */
html.i18n-rtl .witr_slick_slider_area,
html.i18n-rtl .witr_slick_slider_area .slick-list,
html.i18n-rtl .witr_slick_slider_area .slick-track {
  direction: ltr;
}
html.i18n-rtl .witr_slick_slider_area .slick-slide {
  direction: rtl;
  text-align: right;
}

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .lang-switch--dropdown {
    display: none;
  }
  .mobile-nav .lang-switch--list {
    display: block;
  }
}

@media (min-width: 1025px) {
  .mobile-nav .lang-switch--list {
    display: none;
  }
}