body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #1C2F6E;
    color: white;
    text-align: center;
    padding: 1rem 0;
}

main {
    padding: 2rem;
    margin-bottom: 80px; /* footer 높이만큼 여백 추가 */
}

.filter {
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

a:visited {
    color: blue;
    text-decoration: none;
}

th {
    background-color: #f2f2f2;
    cursor: pointer;
    user-select: none;
}

th.sortable:hover {
    background-color: #e0e0e0;
}

th span {
    margin-left: 5px;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #ddd;
}

.pagination {
    /* 중앙 정렬 */
    display: flex;
    justify-content: center;
    /* 객체간 간격 */
    gap: 7px;
    padding: 5px;
}

footer {
    background-color: #1C2F6E;
    color: white;
    text-align: center;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    bottom: 0;
    height: 60px; /* 높이 지정 */
}