.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    text-align: center;
    font-weight: bold;
}

#calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.calendar-cell {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
    min-height: 50px;
}

.empty-cell {
    visibility: hidden;
    border: none;
}

.has-appointments {
    background-color: #e0ffe0;
    cursor: pointer;
    color: black;
}

.selected-date {
    background-color: #007bff;
    color: black;
}

#appointment-slots {
    margin-top: 20px;
    display: none;
}

#appointment-slots div {
    margin: 5px 0;
}

#appointment-slots button {
    margin-left: 10px;
}

.calendar-controls {
    margin-bottom: 20px;
}

#next-appointment {
    margin-top: 20px;
    font-weight: bold;
}