.bg-media-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.bg-media-preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(4px);
}
.bg-media-preview-panel {
  position: relative;
  z-index: 1;
  max-width: min(96vw, 720px);
  max-height: 90vh;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}
.bg-media-preview-panel img {
  display: block;
  max-width: 100%;
  max-height: 86vh;
  object-fit: contain;
}
.bg-media-preview-close {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  height: 36px;
  width: 36px;
  border-radius: 999px;
  border: none;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
html.dark .bg-media-preview-panel {
  background: #1e293b;
}
.msg-thread-listing-thumb,
.past-listing-thumb,
.bg-safe-media {
  object-fit: cover;
  background: #f1f5f9;
}
.bg-safe-media-placeholder {
  object-fit: cover;
  background: #f1f5f9;
}
html.dark .bg-safe-media-placeholder {
  background: #334155;
}
#thread-context-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(255, 255, 255, 0.85));
}
html.dark #thread-context-bar {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.75));
  border-bottom-color: rgba(71, 85, 105, 0.45);
}
#thread-delivery-proof-slot:not(:empty) {
  padding: 0 12px 8px;
}