.calendar {
  width: 280px;
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 10px;
  font-family: sans-serif;
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.calendar-header button {
  background: #eee;
  border: none;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
}

.calendar-grid div {
  padding: 6px 0;
  border-radius: 4px;
  cursor: pointer;
}

.calendar-grid div.today {
  background: #007bff;
  color: #fff;
}

.calendar-grid div.disabled {
  color: #bbb;
  pointer-events: none;
  background: #f9f9f9;
}

.calendar-grid div:hover:not(.disabled):not(.today) {
  background: #f0f0f0;
}