.grid-container {
    grid-template-columns: 75% 24.5%;
    width: 75%;
}

/* 좌측 컬럼 */
.left-column {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 우측 컬럼 */
.right-column {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 각 컬럼 내부 섹션 */
.left-column .section,
.right-column .section {
    flex: 1;
}

.calendar-icon {
    filter: grayscale(100%);
    margin-left: 5px;
    font-size: 1rem;
}

.date {
    font-weight: bold;
    font-size: 0.9rem;
}

/* 모달 전체 영역 (Issue & Theme 캘린더 모달 적용) */
#issue-calendar-modal,
#theme-calendar-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
}

/* 모달 내용 영역 */
#issue-calendar-modal .modal-content,
#theme-calendar-modal .modal-content {
    background-color: #fff;
    color: black;
    margin: 15% auto;
    padding: 20px;
    width: 400px;
    border-radius: 5px;
    text-align: center;
    position: relative;
}

/* 닫기 버튼 */
#issue-calendar-modal .modal-content .close,
#theme-calendar-modal .modal-content .close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 20px;
    cursor: pointer;
}

/* 달력 테이블 */
#issue-calendar-table,
#theme-calendar-table {
    width: 100%;
    border-collapse: collapse;
}

#issue-calendar-table th,
#issue-calendar-table td,
#theme-calendar-table th,
#theme-calendar-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
    cursor: pointer;
}

#issue-calendar-table td:hover,
#theme-calendar-table td:hover {
    background-color: #f0f0f0;
}

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

.calendar-day.disabled {
    pointer-events: none;
    cursor: not-allowed;
    opacity: 0.5; /* 선택 불가능한 날임을 시각적으로 표시 */
}