.pac-card {
  flex: 1 1 260px;
  padding: 16px 18px;
  border-left: 8px solid var(--aqicolor, #999);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  transition: background-color 0.6s ease;
}
.pac-card.updated {
  animation: pacFlash 0.6s ease;
}
@keyframes pacFlash {
  0% { background-color: rgba(0,255,0,0.08); }
  100% { background-color: #fff; }
}
.pac-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.pac-icon {
  width: 42px;
  height: 42px;
}
.pac-aqi { font-weight: 700; color: #111; margin: 6px 0 2px; }
.pac-pm  { font-weight: 600; color: #333; margin: 4px 0; }
.pac-text { color: #555; margin: 3px 0; }
.pac-updated {
  display: block;
  margin-top: 4px;
  color: #777;
  font-size: 12px;
}
.pac-error {
  background: #f8d7da;
  border-left: 8px solid #c0392b;
  color: #721c24;
}