.background-setting-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 25px 60px 25px;
}

.background-setting-item {
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  flex-shrink: 0;
  transition:
    border-color 0.15s,
    transform 0.1s;
  box-sizing: border-box;
}

.background-setting-item:hover {
  transform: scale(1.04);
}

.background-setting-item.active-bg-item {
  border-color: var(--color-theme-color, #0179ca);
}

.background-setting-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.background-setting-placeholder {
  background: repeating-linear-gradient(
    45deg,
    rgba(128, 128, 128, 0.08),
    rgba(128, 128, 128, 0.08) 8px,
    transparent 8px,
    transparent 16px
  );
}

.background-setting-badge {
  position: absolute;
  bottom: 4px;
  left: 4px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  border-radius: 4px;
  font-size: 10px;
  padding: 2px 5px;
  line-height: 1.4;
  pointer-events: none;
}

.background-setting-delete {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
  line-height: 1;
}

.background-setting-item:hover .background-setting-delete {
  opacity: 1;
}

/* Import button fixed to bottom-right */
.background-import-btn {
  position: absolute;
  bottom: 20px;
  right: 20px;
  cursor: pointer;
}

/* Preview overlay */
.background-preview-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  animation: fade-in 0.15s ease;
}

.background-preview-image {
  max-width: 80vw;
  max-height: 60vh;
  border-radius: 10px;
  object-fit: contain;
}

.background-preview-actions {
  display: flex;
  gap: 14px;
  margin-top: 20px;
}

.background-preview-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.background-preview-close:hover {
  opacity: 1;
}

.background-setting-empty {
  text-align: center;
  opacity: 0.45;
  padding: 40px 0 20px;
  font-size: 14px;
  width: 100%;
}