#TimeTable {
    text-align: center;
    align-items: stretch;
    padding: 2rem 1rem;
    background-color: whitesmoke;
    width: 100%;
    align-self: stretch;    /* 加這行，撐滿父元素寬度 */
    font-weight: bold;
}
#TimeTable h1{
    margin-bottom: 1rem;
}
.day-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.day-tab {
    padding: 6px 16px;
    border: 2px solid var(--color-text-dark);
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: bold;
    cursor: pointer;
    background: transparent;
    color: black;
}

.day-tab.active {
    background: var(--color-text-dark);
    color: var(--color-text-light);
}

.detail-tab {
    border-style: dashed;
}

#desktopTable,
#desktopDetail {
    display: block;
}

#desktopTable.hidden,
#desktopDetail.hidden {
    display: none;
}

.schedule-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.schedule-table th {
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: bold;
    border-bottom: 2px solid black;
}

.schedule-table td {
    padding: 12px 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid #ccc;
    vertical-align: top;
    line-height: 1.6;
}

.time-col {
    color: #777;
    font-size: 0.8rem;
    white-space: nowrap;
    width: 100px;
}

.break-row td {
    text-align: center;
    color: #999;
    font-size: 0.85rem;
    background-color: whitesmoke;
}

.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 4px;
}

.tag-morning {
    background: #dbeafe;
    color: #1e3a8a;
}

.tag-afternoon {
    background: #fef3c7;
    color: #92400e;
}

.tag-evening {
    background: #ede9fe;
    color: #4c1d95;
}

.tag-signup {
    background: #d1fae5;
    color: #065f46;
    font-size: 1rem;
}

.tag-course {
    background: #dbeafe;
    color: #1e3a8a;
    font-size: 1rem;
}

.tag-accommodation {
    background: #fed7aa;
    color: #9a3412;
    font-size: 1rem;
}

#detailList {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    text-align: left;
}

.detail-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: background 0.2s;
}

.detail-card:hover {
    background: #f9f9f9;
}

.detail-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.detail-card-day {
    font-size: 0.75rem;
    color: #999;
}

.detail-card-time {
    font-size: 0.8rem;
    color: #777;
    margin-bottom: 6px;
}

.detail-card-title {
    font-size: 0.95rem;
    font-weight: bold;
}

.detail-card-desc {
    font-size: 0.85rem;
    color: #555;
    margin-top: 4px;
}

.mobile-card {
    display: none;
}

.mobile-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.mobile-nav-btn {
    background: none;
    border: 2px solid black;
    border-radius: 4px;
    padding: 4px 14px;
    font-size: 1.5rem;
    cursor: pointer;
    font-weight: bold;
}

.mobile-nav-btn:disabled {
    opacity: 0.3;
    cursor: default;
}

.mobile-day-title {
    font-size: 1.1rem;
    font-weight: bold;
}

.mobile-session {
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 12px;
    text-align: left;
}

.mobile-session.clickable {
    cursor: pointer;
    transition: background 0.2s;
}

.mobile-session.clickable:hover {
    background: #f9f9f9;
}

.mobile-session-time {
    font-size: 0.75rem;
    color: #777;
    margin-bottom: 6px;
}

.mobile-session-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin: 4px 0;
}

.mobile-session-desc {
    font-size: 0.85rem;
    color: #555;
}

.mobile-detail-body {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #eee;
    font-size: 0.85rem;
    color: #444;
    line-height: 1.7;
}

.click-hint {
    font-size: 0.75rem;
    color: #aaa;
    margin-top: 6px;
}

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.open {
    display: flex;
}

.modal-box {
    background: whitesmoke;
    border-radius: 12px;
    padding: 2rem;
    width: 90%;
    max-width: 600px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: #555;
}

.modal-tag-wrap {
    margin-bottom: 8px;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin: 0 0 6px;
}

.modal-time {
    font-size: 0.8rem;
    color: #777;
    margin: 0 0 12px;
}

.modal-detail {
    font-size: 0.9rem;
    line-height: 1.7;
    color: #333;
    margin: 0;
    max-height: 300px;
    overflow-y: auto;
}
#detailList {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    text-align: left;
    align-items: start; /* 讓各欄從頂部對齊 */
}

.detail-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-col-title {
    font-size: 0.9rem;
    font-weight: bold;
    color: #777;
    margin-bottom: 4px;
    padding-bottom: 6px;
    border-bottom: 2px solid #ccc;
}
@media (max-width: 768px) {
    .day-tabs,
    #desktopTable,
    #desktopDetail {
        display: none !important;
    }
    .mobile-card {
        display: block;
    }
    #TimeTable {
        padding: 2rem 3rem;
    }
}