.venue-title {
    font-size: 16px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
    /* 表との余白を10pxに */
    margin-top: 30px;
    /* 会場ごとの間隔 */
}

.seminar_wrapper > .venue-title:first-of-type {
    margin-top: 0;
    /* 最初の会場タイトルの上の余白をなくす */
}

.seminar-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
    table-layout: fixed;
    /* 列幅を固定 */
}

.seminar-table thead {
    background-color: #2c3e50;
    color: white;
}

.seminar-table th {
    padding: 12px 0;
    /* 上下のパディングのみ指定 */
    text-align: center;
    font-weight: bold;
    border: 1px solid #bbb;
    font-size: 13px;
    height: 40px;
    background-color: #ccc;
    color: #000;
    vertical-align: middle;
}

.seminar-table td {
    padding: 12px;
    border: 1px solid #ddd;
    font-size: 13px;
}

.seminar-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.seminar-table tbody tr:hover {
    background-color: #f0f0f0;
}

/* 列幅の指定 */
.seminar-table .date-cell {
    width: 8%;
    text-align: center;
}

.seminar-table .time-cell {
    width: 8%;
    text-align: center;
    white-space: nowrap;
}

.seminar-table .title-cell {
    width: 54%;
}

/* 講師列は残り */

.title-cell,
.lecturer-title {
    word-wrap: break-word;
}

.lecturer-name {
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 3px;
}

.lecturer-title {
    font-size: 12px;
    color: #666;
    line-height: 1.4;
}

.no-data {
    padding: 40px;
    text-align: center;
    color: #999;
    font-size: 14px;
}

/* タブレット・スマートフォン対応 */
@media (max-width: 820px) {
    .container {
        padding: 15px;
    }

    .seminar-table th,
    .seminar-table td {
        padding: 8px 5px;
        font-size: 12px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    .venue-selector {
        gap: 5px;
    }

    .venue-btn {
        padding: 8px 12px;
        font-size: 12px;
    }

    .venue-title {
        font-size: 14px;
        margin-bottom: 15px;
    }

    .seminar-table th,
    .seminar-table td {
        padding: 6px 3px;
        font-size: 11px;
    }

    .lecturer-title {
        font-size: 10px;
    }
    
}