/**
 * 社区多图 · 经典 Twitter 网格
 *
 * 格子大小只看数量和顺序，不看原图尺寸。预览 object-fit:cover；
 * 点开灯箱才完整显示。图与图 8px 缝 + 每张独立圆角（对齐社区卡片）。
 * 单张长图：最高收到正方形，再封一层最大高度；顶对齐，底部模糊（JS 加 .is-tall）。
 * 图必须脱离文档流，否则原图高度会把 aspect-ratio 撑开，多长就多长。
 */

#wpforo #wpforo-wrap .mytheme-wpf-image-group {
  --preview-ratio: 1.333333; /* JS 未跑完前按 4:3 占位，单图再夹到 1:1～2:1 */
  display: grid;
  gap: 8px;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  margin: 12px 0 0 !important;
  padding: 0 !important;
  overflow: visible;
  background: transparent;
  line-height: 0;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="1"] {
  display: block;
  max-width: 520px;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group--feed[data-count="1"] {
  max-width: 100%;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="2"],
#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="3"],
#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="4"] {
  aspect-ratio: 16 / 9;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="2"] {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="3"] {
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="4"] {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group__cell {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden;
  border: 0;
  border-radius: var(--myt-wpf-radius-card, 14px);
  background: var(--myt-wpf-color-surface-muted, #f5f5f5);
  cursor: zoom-in;
  appearance: none;
  -webkit-appearance: none;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="1"] .mytheme-wpf-image-group__cell {
  height: auto;
  aspect-ratio: var(--preview-ratio);
  /* 宽栏里正方形仍会很高，再封一截，避免长图占满一屏 */
  max-height: 26rem;
}

/* 比 3:4 更高：只露顶部，底部模糊，提示下面被收起 */
#wpforo #wpforo-wrap .mytheme-wpf-image-group.is-tall[data-count="1"] img {
  object-position: center top;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group.is-tall[data-count="1"] .mytheme-wpf-image-group__cell::after {
  content: "";
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  bottom: 0;
  height: min(5.5rem, 28%);
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.55));
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 48%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 48%);
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group__cell:focus-visible {
  outline: 2px solid var(--myt-wpf-focus, #111);
  outline-offset: 2px;
  z-index: 1;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group img,
#wpforo #wpforo-wrap .mytheme-wpf-post__content .mytheme-wpf-image-group img {
  display: block;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  margin: 0 !important;
  object-fit: cover;
  object-position: 50% 50%;
  border-radius: 0;
  pointer-events: none;
  vertical-align: bottom;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group[data-count="1"] img,
#wpforo #wpforo-wrap .mytheme-wpf-post__content .mytheme-wpf-image-group[data-count="1"] img {
  position: absolute;
  inset: 0;
}

#wpforo #wpforo-wrap .mytheme-wpf-image-group__more {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.42);
  color: #fff;
  font-size: 24px; /* text-page */
  font-weight: 600;
  line-height: 1;
  pointer-events: none;
}

#wpforo #wpforo-wrap .wpforo-post-content:has(.mytheme-wpf-image-group) .wpforo-attached-file,
#wpforo #wpforo-wrap .wpforo-post-content:has(.mytheme-wpf-image-group) .wpfa-item {
  display: none !important;
}