.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  text-align: center;
  margin-top: 10px;
}
.day {
  padding: 10px;
  border-radius: 8px;
  background: #f1f1f1;
  cursor: pointer;
  transition: 0.2s;
}
.day:hover {
  background: #dbeafe;
}
.day.available {
  background: #86efac;
}