.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr); /* 日〜土 */
  gap: 2px;
  /*max-width: 1000px;*/
  /*margin: 0 auto;*/
  margin-bottom: 50px;
}

.day-name {
  background-color: #d9cbb8;
  color: #4a3822;
  text-align: center;
  padding: 10px;
  font-weight: bold;
  border: 1px solid black;
}

.day {
  border: 1px solid black;
  background-color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5px;
  min-height: 100px;
  font-size: 12px;
}

.date {
  font-weight: bold;
  margin-bottom: 4px;
  color: #6b4e2d;
}

.slot {
  width: 100%;
  text-align: center;
  padding: 2px;
  margin: 2px 0;
  border-radius: 4px;
}

.available {
  background-color: #e0ffe0;
}

.full {
  background-color: #ffd6d6;
}

.closed {
  background-color: #e0e0e0;
  color: #888;
}