h1 {
        text-align: center;
        margin-bottom: 20px;
        color: #333;
      }


      .calendar-container {
        display: flex;
        flex-direction: column;
        gap: 20px;
        width: 100%;
      }


      .calendar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
      }


      .month-year {
        font-size: 2rem;
        font-weight: bold;
        color: #333;
      }


      .nav-button {
        background-color: #4a90e2;
        color: white;
        border: none;
        border-radius: 5px;
        padding: 8px 16px;
        cursor: pointer;
        font-size: 1.5rem;
        transition: background-color 0.3s;
      }


      .nav-button:hover {
        background-color: #357abd;
      }


      .calendar {
        width: 100%;
        border-collapse: collapse;
      }


      .calendar th {
        padding: 10px;
        text-align: center;
        background-color: #f0f0f0;
        color: #333;
        font-weight: bold;
      }


      .calendar td {
        padding: 10px;
        text-align: center;
        border: 1px solid #e0e0e0;
        height: 60px;
        vertical-align: top;
        position: relative;
      }


      .calendar td.empty {
        background-color: #f9f9f9;
      }


      .calendar td.available::after {
        content: "Áø·áÀÏ";
        display: block;
        font-size: 1.3rem;
        color: #4a90e2;
        margin-top: 5px;
      }


      .calendar td.unavailable {
        background-color: #ffebee;
      }


      .calendar td.unavailable::after {
        content: "ÈÞÁø";
        display: block;
        font-size: 1.3rem;
        color: #e53935;
        margin-top: 5px;
      }


      .calendar td.regular-unavailable {
        background-color: #fff8e1;
      }


      .calendar td.holiday {
        background-color: #f0f0f0;
      }


      .calendar td.regular-unavailable::after {
        content: "ÈÞÁø";
        display: block;
        font-size: 1.3rem;
        color: #ff9800;
        margin-top: 5px;
      }


      .calendar td.past {
        background-color: #f0f0f0;
        color: #999;
      }


      .calendar td.past::after {
        content: "";
        display: none;
      }


      .calendar td.today {
        font-weight: bold;
        color: #4a90e2;
        border: 2px solid #4a90e2;
      }


      .legend {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 15px;
        margin-top: 15px;
      }


      .legend-item {
        display: flex;
        align-items: center;
        gap: 5px;
        font-size: 1.3rem;
      }


      .legend-color {
        width: 15px;
        height: 15px;
        border-radius: 3px;
      }


      .legend-today {
        border: 2px solid #4a90e2;
      }


      .legend-available {
        background-color: white;
      }


      .legend-unavailable {
        background-color: #ffebee;
      }


      .legend-regular-unavailable {
        background-color: #fff8e1;
      }


      .legend-past {
        background-color: #f0f0f0;
      }


      @media (max-width: 600px) {
        .calendar th,
        .calendar td {
          padding: 5px;
          font-size: 1.3rem;
          height: 50px;
        }


        .month-year {
          font-size: 1.2rem;
        }


        .nav-button {
          padding: 6px 12px;
          font-size: 1.3rem;
        }


        .legend {
          gap: 10px;
        }


        .legend-item {
          font-size: 1.3rem;
        }
      }