/* HFDN check-in visual tweaks */
.activity-item.action-checkin { 
  border-left: 3px solid #10b981;           /* emerald accent */
  padding-left: .75rem;
}
.activity-item.action-checkin .activity-content {
  background: #f0fdf4;                       /* light green */
  border-radius: .5rem;
  padding: .5rem .75rem;
}
.activity-item.action-checkin .activity-header .activity-action::before {
  content: "✓";                               /* simple check icon */
  display: inline-block;
  margin-right: .35rem;
  font-weight: 700;
}
.bb-activity-filters a[data-bp-filter="checkin"]::after {
  content: " •";                              /* subtle cue on the filter tab */
}