/* ── Status dots ──────────────────────────────────────────────────────────── */
.status-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #6c757d;
  flex-shrink: 0;
  transition: background 0.4s;
}
.status-dot.connected    { background: #198754; }
.status-dot.disconnected { background: #dc3545; }

/* ── Stats cards ─────────────────────────────────────────────────────────── */
.card { border-radius: 8px; }

/* ── Leaflet map ─────────────────────────────────────────────────────────── */
#tracker-map, #detail-map {
  border-radius: 6px;
  border: 1px solid #495057;
}

/* ── Device table ────────────────────────────────────────────────────────── */
#device-table thead th {
  white-space: nowrap;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
  z-index: 5;
}

#device-table tbody tr {
  cursor: pointer;
  transition: background-color 0.35s ease;
}
#device-table tbody tr:hover { opacity: 0.88; }

#device-table tbody td {
  font-size: 0.82rem;
  vertical-align: middle;
  white-space: nowrap;
}

/* Row colours */
tr.row-online  { background-color: rgba(25,  135,  84, 0.18) !important; }
tr.row-offline { background-color: rgba(220,  53,  69, 0.22) !important; }
tr.row-lowbatt { background-color: rgba(255, 193,   7, 0.22) !important; }

/* WS update flash */
.row-flash { background-color: rgba(255, 193, 7, 0.35) !important; }

/* ── Battery progress bar ────────────────────────────────────────────────── */
.batt-bar-wrap {
  width: 64px;
  display: inline-block;
  vertical-align: middle;
}
.batt-bar {
  height: 7px;
  border-radius: 3px;
  background: #dee2e6;
  overflow: hidden;
}
.batt-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s;
}

/* ── Signal bars ─────────────────────────────────────────────────────────── */
.signal-icon { display: inline-flex; align-items: flex-end; gap: 2px; height: 14px; }
.signal-icon span {
  display: inline-block;
  width: 4px;
  border-radius: 2px;
  background: #6c757d;
}
.signal-icon span:nth-child(1) { height:  4px; }
.signal-icon span:nth-child(2) { height:  7px; }
.signal-icon span:nth-child(3) { height: 10px; }
.signal-icon span:nth-child(4) { height: 14px; }
.signal-icon.s0 span            { background: #dc3545; height: 4px !important; }
.signal-icon.s1 span:nth-child(-n+1) { background: #ffc107; }
.signal-icon.s2 span:nth-child(-n+2) { background: #ffc107; }
.signal-icon.s3 span:nth-child(-n+3) { background: #198754; }
.signal-icon.s4 span               { background: #198754; }

/* ── Navbar ──────────────────────────────────────────────────────────────── */
.navbar-brand { font-size: 1rem; }

/* ── Modal ───────────────────────────────────────────────────────────────── */
#modal-info dt {
  font-size: 0.73rem;
  text-transform: uppercase;
  color: #6c757d;
  margin-bottom: 1px;
}
#modal-info dd { font-size: 0.88rem; margin-bottom: 8px; }

/* ── Admin cards ─────────────────────────────────────────────────────────── */
.card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.12); }