/* ============================================================================
 * Dark Theme — 深色主题下的 UI 覆盖
 * 导航栏、侧边栏、Features 卡片、Hero 区域、表格、Footer
 * ============================================================================ */

/* 导航栏 — 全息玻璃效果 */
.dark :deep(.VPNavBar) {
  background: rgba(8, 8, 20, 0.78);
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  border-bottom: 1px solid rgba(99, 102, 241, 0.08);
}

.dark :deep(.VPNavBar::before) {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(99, 102, 241, 0.6),
    rgba(236, 72, 153, 0.4),
    rgba(6, 182, 212, 0.5),
    transparent
  );
}

.dark :deep(.VPNavBarTitle) {
  font-weight: 700;
  background: linear-gradient(135deg, #e0e7ff 0%, #c084fc 50%, #f472b6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: filter 0.3s ease;
}

.dark :deep(.VPNavBarTitle:hover) {
  filter: brightness(1.3);
}

.dark :deep(.VPNavBarMenuLink) {
  position: relative;
  transition: color 0.3s ease;
}

.dark :deep(.VPNavBarMenuLink:hover) {
  color: #c4b5fd;
}

.dark :deep(.VPNavBarMenuLink::after) {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #a855f7, #ec4899);
  border-radius: 1px;
  transition: width 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dark :deep(.VPNavBarMenuLink:hover::after) {
  width: 100%;
}

/* 搜索框增强(亮 + 深都适用) */
:deep(.DocSearch-Button) {
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--vp-radius-md) !important;
  transition: background 0.3s, border-color 0.3s, color 0.3s !important;
  backdrop-filter: blur(8px);
}

:deep(.DocSearch-Button:hover) {
  border-color: rgba(99, 102, 241, 0.4) !important;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15) !important;
  background: rgba(255, 255, 255, 0.06) !important;
}

/* 侧边栏 — 玻璃质感 */
.dark :deep(.VPSidebar) {
  background: rgba(8, 8, 20, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid rgba(99, 102, 241, 0.06);
}

.dark :deep(.VPSidebarItem.is-active > .item > .link) {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.08));
  border-radius: var(--vp-radius-sm);
  color: #c4b5fd;
}

.dark :deep(.VPSidebarItem .link:hover) {
  color: #c4b5fd;
}

/* 侧边栏展开动画 */
:deep(.VPSidebarItem .items) {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.25s, border-color 0.25s, box-shadow 0.35s;
}

/* Features 卡片 — 全息科技感 */
.dark :deep(.VPHero .features .VPFeature) {
  position: relative;
  padding: 2rem 1.8rem;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--vp-radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: transform 0.55s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s, border-color 0.3s, box-shadow 0.55s;
  overflow: hidden;
}

.dark :deep(.VPHero .features .VPFeature::before) {
  content: '';
  position: absolute;
  top: 0;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(99, 102, 241, 0.5),
    rgba(236, 72, 153, 0.3),
    transparent
  );
  opacity: 0;
  transition: opacity 0.5s ease;
}

.dark :deep(.VPHero .features .VPFeature::after) {
  content: '';
  position: absolute;
  top: -1px;
  right: -1px;
  width: 6px;
  height: 6px;
  background: #a855f7;
  border-radius: 50%;
  box-shadow: 0 0 12px #a855f7;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.dark :deep(.VPHero .features .VPFeature:hover) {
  /* hover lift 增大到 10px(feature 卡片是主视觉,允许比普通卡片多一倍) */
  transform: translateY(calc(-1 * var(--vp-hover-lift) * 2.5)) scale(1.03);
  border-color: rgba(99, 102, 241, 0.35);
  background: rgba(255, 255, 255, 0.03);
  box-shadow:
    0 20px 50px rgba(99, 102, 241, 0.18),
    0 0 70px rgba(139, 92, 246, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.dark :deep(.VPHero .features .VPFeature:hover::before),
.dark :deep(.VPHero .features .VPFeature:hover::after) {
  opacity: 1;
}

/* Features 图标发光 */
.dark :deep(.VPHero .features .VPFeature .icon) {
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s, border-color 0.3s;
}

.dark :deep(.VPHero .features .VPFeature:hover .icon) {
  transform: scale(1.2);
  filter: drop-shadow(0 0 24px rgba(139, 92, 246, 0.9));
}

/* Features 标题渐变 */
.dark :deep(.VPHero .features .VPFeature .title) {
  background: linear-gradient(135deg, #e0e7ff 0%, #c4b5fd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: transform 0.4s, background 0.25s, border-color 0.25s, box-shadow 0.4s;
}

.dark :deep(.VPHero .features .VPFeature:hover .title) {
  background: linear-gradient(135deg, #c4b5fd 0%, #f9a8d4 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

/* Hero 区域增强 */
.dark :deep(.VPHero) {
  position: relative;
  padding-bottom: 5rem;
}

.dark :deep(.VPHero .text) {
  color: rgba(255, 255, 255, 0.7);
  text-shadow: 0 0 40px rgba(99, 102, 241, 0.2);
}

.dark :deep(.VPHero .tagline) {
  color: rgba(255, 255, 255, 0.55);
  text-shadow: 0 0 30px rgba(139, 92, 246, 0.15);
}

.dark :deep(.VPHero .actions) {
  gap: 1.2rem;
}

.dark :deep(.VPHero .image-container .image-bg) {
  transition: background 1.5s, border-color 1.5s;
}

.dark :deep(.VPHero .image-container:hover .image-bg) {
  filter: blur(80px) saturate(1.8);
  opacity: 0.8;
}

/* 表格科技感 */
.dark :deep(.vp-doc table) {
  border-radius: var(--vp-radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.dark :deep(.vp-doc th) {
  background: rgba(99, 102, 241, 0.08);
  font-weight: 600;
}

.dark :deep(.vp-doc tr:nth-child(2n)) {
  background: rgba(255, 255, 255, 0.015);
}

.dark :deep(.vp-doc tr:hover) {
  background: rgba(99, 102, 241, 0.05);
}

/* Footer */
.dark :deep(.VPFooter) {
  border-top: 1px solid rgba(99, 102, 241, 0.06);
  background: rgba(8, 8, 20, 0.4);
  backdrop-filter: blur(12px);
}