.calendar {
    width: 100%;
    margin: 20px auto;
}

.calendar .header {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.calendar .header .month-year {
    padding: 20px 0;
    color: #636e73;
    font-size: clamp(18px, 3vw, 26px);
    font-weight: bold;
    text-align: center;
}

.calendar .days {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    width: 100%;
    border-top: 1px solid #e6e9ea;
    border-left: 1px solid #e6e9ea;
}

.calendar .days .day_name {
    min-width: 0;
    padding: 12px 5px;
    color: #fff;
    background-color: #448cd6;
    border-right: 1px solid #2c7aca;
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    text-transform: uppercase;
}

.calendar .days .day_num {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 110px;
    padding: 10px;
    color: #7c878d;
    background-color: #fff;
    border-right: 1px solid #e6e9ea;
    border-bottom: 1px solid #e6e9ea;
    cursor: pointer;
}

.calendar .days .day_num span {
    display: inline-flex;
    width: 30px;
    font-size: 14px;
}

.calendar .days .day_num .event {
    overflow: hidden;
    margin-top: 8px;
    padding: 4px 6px;
    color: #fff;
    background-color: #f7c30d;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.calendar .days .day_num .event.green {
    background-color: #51ce57;
}

.calendar .days .day_num .event.blue {
    background-color: #518fce;
}

.calendar .days .day_num .event.red {
    background-color: #ce5151;
}

.calendar .days .day_num:hover {
    background-color: #f5f8fa;
}

.calendar .days .day_num.ignore {
    color: #ced2d4;
    background-color: #fdfdfd;
    cursor: default;
}

.calendar .days .day_num.selected {
    background-color: #f1f2f3;
    cursor: default;
}

@media (max-width: 600px) {
    .content {
        width: calc(100% - 16px);
    }

    .navtop div {
        width: calc(100% - 16px);
    }

    .navtop div h1 {
        font-size: 18px;
    }

    .navtop div a {
        padding: 8px 4px;
        font-size: 13px;
    }

    .calendar {
        margin-top: 10px;
    }

    .calendar .header .month-year {
        padding: 14px 0;
        font-size: 19px;
    }

    .calendar .days .day_name {
        padding: 8px 2px;
        font-size: 10px;
    }

    .calendar .days .day_num {
        min-height: 72px;
        padding: 6px 4px;
        font-size: 12px;
    }

    .calendar .days .day_num span {
        width: 22px;
        font-size: 12px;
    }

    .calendar .days .day_num .event {
        margin-top: 5px;
        padding: 3px 4px;
        font-size: 10px;
    }
}