/* Lightbox 大图预览组件 */

.lightbox {
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox[aria-hidden="false"] {
  display: flex;
  opacity: 1;
}

.lightbox-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(18, 20, 22, 0.22);
  backdrop-filter: blur(20px) saturate(0.86);
  -webkit-backdrop-filter: blur(20px) saturate(0.86);
  cursor: pointer;
  pointer-events: auto;
}

.lightbox::before {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.035);
  content: "";
  pointer-events: none;
}

.lightbox-container {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.lightbox-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(86vw, 1200px);
  height: min(80vh, 760px);
  background: transparent;
  box-shadow: none;
  pointer-events: auto;
}

.lightbox-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.lightbox.is-loading .lightbox-image {
  opacity: 0;
  transition: none;
}

.lightbox.is-loading .lightbox-content::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: lightbox-spin 0.8s linear infinite;
  content: "";
  pointer-events: none;
}

@keyframes lightbox-spin {
  to {
    transform: rotate(360deg);
  }
}

.lightbox-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
  max-height: min(26vh, 170px);
  padding: 18px 24px 20px;
  color: #FFFFFF;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(10, 10, 10, 0.34) 22%, rgba(10, 10, 10, 0.58) 100%);
  border-radius: 0;
  overflow-y: auto;
  overflow-wrap: anywhere;
  pointer-events: auto;
}

.lightbox.has-lightbox-info .lightbox-info {
  display: grid;
}

.lightbox-caption {
  grid-column: 1;
  grid-row: 1;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  text-align: left;
}

.lightbox-caption:empty {
  display: none;
}

.lightbox-description {
  grid-column: 1;
  grid-row: 2;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  line-height: 1.65;
  text-align: left;
  white-space: normal;
}

.lightbox-description:empty {
  display: none;
}

.lightbox-counter {
  position: absolute;
  left: 50%;
  bottom: -42px;
  display: flex;
  gap: 13px;
  align-items: center;
  justify-content: center;
  max-width: calc(100% - 48px);
  padding: 0 0 1px;
  overflow-x: auto;
  scrollbar-width: none;
  transform: translateX(-50%);
  pointer-events: auto;
}

.lightbox-counter::-webkit-scrollbar {
  display: none;
}

.lightbox-counter-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  padding: 0;
  background: rgba(255, 255, 255, 0.42);
  border: 0;
  border-radius: 999px;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.16);
  cursor: pointer;
  opacity: 0.95;
  transition: width 0.22s ease, background 0.22s ease, opacity 0.22s ease;
}

.lightbox-counter-dot.is-active {
  width: 26px;
  background: #FFFFFF;
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.5);
  opacity: 1;
}

.lightbox-counter-dot:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.85);
  outline-offset: 4px;
}

.lightbox-close {
  position: absolute;
  top: 32px;
  right: 36px;
  z-index: 12;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  color: #FFFFFF;
  background: rgba(0, 0, 0, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #FFFFFF;
  transform: scale(1.04);
}

.lightbox-close:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.9);
  outline-offset: 4px;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.3s ease;
  color: #FFFFFF;
  pointer-events: auto;
  z-index: 10;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 1);
}

.lightbox-prev:disabled,
.lightbox-next:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox-prev {
  left: 48px;
}

.lightbox-next {
  right: 48px;
}

.lightbox-prev svg,
.lightbox-next svg {
  display: none;
}

.lightbox-prev::before,
.lightbox-next::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  border-top: 2px solid #FFFFFF;
  border-left: 2px solid #FFFFFF;
  content: "";
}

.lightbox-prev::before {
  transform: translate(-40%, -50%) rotate(-45deg);
}

.lightbox-next::before {
  transform: translate(-60%, -50%) rotate(135deg);
}

/* 页面主题色 */
[data-page="index"] .lightbox-prev:hover,
[data-page="index"] .lightbox-next:hover {
  background: #1E5BA8;
}

[data-page="index"] .lightbox-prev:hover::before,
[data-page="index"] .lightbox-next:hover::before {
  border-color: #FFFFFF;
}

[data-page="xiaotun"] .lightbox-prev:hover,
[data-page="xiaotun"] .lightbox-next:hover {
  background: #FF6B35;
}

[data-page="xiaotun"] .lightbox-prev:hover::before,
[data-page="xiaotun"] .lightbox-next:hover::before {
  border-color: #FFFFFF;
}

[data-page="ruhe"] .lightbox-prev:hover,
[data-page="ruhe"] .lightbox-next:hover {
  background: #00BCD4;
}

[data-page="ruhe"] .lightbox-prev:hover::before,
[data-page="ruhe"] .lightbox-next:hover::before {
  border-color: #FFFFFF;
}

/* 响应式适配 */
@media (max-width: 768px) {
  .lightbox-content {
    width: 94vw;
    height: 76vh;
  }

  .lightbox-image {
    width: 100%;
    height: 100%;
  }

  .lightbox-prev,
  .lightbox-next {
    width: 44px;
    height: 44px;
  }

  .lightbox-close {
    top: max(14px, env(safe-area-inset-top));
    right: 14px;
    width: 42px;
    height: 42px;
  }

  .lightbox-prev {
    left: 16px;
  }

  .lightbox-next {
    right: 16px;
  }

  .lightbox-info {
    grid-template-columns: minmax(0, 1fr);
    max-height: 32vh;
    padding: 14px 16px 16px;
  }

  .lightbox-counter {
    bottom: -34px;
    gap: 11px;
    max-width: calc(100% - 32px);
  }

  .lightbox-counter-dot {
    width: 8px;
    height: 8px;
  }

  .lightbox-counter-dot.is-active {
    width: 24px;
  }

  .lightbox-caption {
    font-size: 14px;
  }

  .lightbox-description {
    font-size: 13px;
    line-height: 1.55;
  }
}

/* 防止背景滚动 */
body.lightbox-open {
  overflow: hidden;
}

/* 可点击图片的视觉提示 */
[data-lightbox-group] {
  cursor: pointer;
}

/* 通用 hover 放大镜提示：只覆盖图片区域，不覆盖文字
   已有 .gallery-overlay 的元素跳过，避免叠加 */
[data-lightbox-group]:not(:has(.gallery-overlay)) picture {
  position: relative;
  display: block;
}

[data-lightbox-group]:not(:has(.gallery-overlay)) picture::before {
  position: absolute;
  inset: 0;
  background: rgba(13, 43, 94, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 5;
  content: "";
}

[data-lightbox-group]:not(:has(.gallery-overlay)) picture::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 44px;
  height: 44px;
  margin: -22px 0 0 -22px;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'><circle cx='17' cy='17' r='12' stroke='white' stroke-width='2.4' fill='none'/><line x1='26' y1='26' x2='34' y2='34' stroke='white' stroke-width='2.4' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 40px 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  transform: scale(0.85);
  z-index: 6;
  content: "";
}

[data-lightbox-group]:not(:has(.gallery-overlay)):hover picture::before {
  opacity: 1;
}

[data-lightbox-group]:not(:has(.gallery-overlay)):hover picture::after {
  opacity: 1;
  transform: scale(1);
}