.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    margin-top: 20px;
}

.calendar-day {
    border: 1px solid #ddd;
    min-height: 100px;
    padding: 5px;
    background-color: #f9f9f9;
}

.day-header {
    font-weight: bold;
    margin-bottom: 5px;
    color: #333;
}

.shift-entry {
    background-color: #4CAF50;
    color: white;
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 0.9em;
    margin: 2px 0;
}