/* ===== ISAC 活動行事曆 ===== */
/* 配色沿用站上 academic 區塊：主色 #2c5282、輔色 #3182ce */

.isac-calendar {
    --cal-border: #dfe4ea;
    --cal-text: #2d3748;
    --cal-muted: #94a3b8;
    --cal-primary: #2c5282;
    --cal-accent: #3182ce;
}

/* --- 工具列：月份切換、年月快選、檢視切換 --- */
.calendar-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 20px;
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.calendar-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--cal-border);
    background: #fff;
    border-radius: 8px;
    color: var(--cal-primary);
    font-size: 15px;
    cursor: pointer;
    transition: background-color .2s ease, border-color .2s ease;
}

.calendar-nav-btn:hover {
    background: #f1f5f9;
    border-color: var(--cal-accent);
}

.calendar-current-month {
    min-width: 150px;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--cal-primary);
}

.calendar-jump {
    display: flex;
    align-items: center;
    gap: 6px;
}

.calendar-jump select {
    border: 1px solid var(--cal-border);
    border-radius: 8px;
    padding: 7px 10px;
    font-size: 15px;
    color: var(--cal-text);
    background: #fff;
}

.calendar-today-btn {
    border: 1px solid var(--cal-border);
    background: #fff;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 15px;
    color: var(--cal-primary);
    cursor: pointer;
}

.calendar-today-btn:hover {
    background: #f1f5f9;
}

.calendar-view-switch {
    display: inline-flex;
    border: 1px solid var(--cal-border);
    border-radius: 8px;
    overflow: hidden;
}

.calendar-view-switch button {
    border: 0;
    background: #fff;
    padding: 8px 18px;
    font-size: 15px;
    color: var(--cal-text);
    cursor: pointer;
}

.calendar-view-switch button.active {
    background: var(--cal-primary);
    color: #fff;
}

/* --- 分類圖例 --- */
.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    padding: 12px 16px;
    margin-bottom: 16px;
    background: #f8fafc;
    border: 1px solid var(--cal-border);
    border-radius: 10px;
}

.calendar-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    color: #4a5568;
}

.calendar-legend-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* --- 月曆表格 --- */
.calendar-grid {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    background: #fff;
    border: 1px solid var(--cal-border);
    border-radius: 10px;
    overflow: hidden;
}

.calendar-grid th {
    padding: 12px 6px;
    background: #f1f5f9;
    border-bottom: 1px solid var(--cal-border);
    font-size: 15px;
    font-weight: 600;
    color: #4a5568;
    text-align: center;
}

.calendar-grid th.is-weekend {
    color: #a05252;
}

.calendar-grid td {
    /* 高度交給內容決定，活動再多也不截斷 */
    vertical-align: top;
    width: 14.28%;
    min-height: 110px;
    height: 110px;
    padding: 6px;
    border: 1px solid var(--cal-border);
}

.calendar-day-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 26px;
    height: 26px;
    margin-bottom: 4px;
    border-radius: 50%;
    font-size: 15px;
    font-weight: 600;
    color: var(--cal-text);
}

.calendar-cell.is-other-month {
    background: #fafbfc;
}

.calendar-cell.is-other-month .calendar-day-number {
    color: var(--cal-muted);
    font-weight: 400;
}

.calendar-cell.is-today .calendar-day-number {
    background: var(--cal-primary);
    color: #fff;
}

/* --- 格子裡的活動 --- */
.calendar-event {
    display: block;
    width: 100%;
    margin-bottom: 4px;
    padding: 5px 8px;
    border: 0;
    border-radius: 5px;
    font-size: 13.5px;
    line-height: 1.45;
    text-align: left;
    /* 不用 ellipsis，長標題整段折行顯示 */
    white-space: normal;
    overflow-wrap: break-word;
    word-break: break-word;
    cursor: pointer;
    transition: filter .15s ease;
}

.calendar-event:hover {
    filter: brightness(0.95);
}

.calendar-event-time {
    display: block;
    font-size: 12px;
    opacity: .8;
}

/* 跨天活動的中段與結尾，稍微淡一點以區別起始日 */
.calendar-event.is-continued {
    opacity: .92;
}

/* --- 本月活動一覽（不會操作月曆的人往下滑就看得到全部） --- */
.calendar-list {
    margin-top: 40px;
}

.calendar-list-heading {
    font-size: 20px;
    font-weight: 700;
    color: var(--cal-primary);
    padding-bottom: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--cal-border);
}

.calendar-list-item {
    display: flex;
    gap: 18px;
    padding: 20px;
    margin-bottom: 14px;
    background: #fff;
    border: 1px solid var(--cal-border);
    border-radius: 10px;
    /* 站上 header 是固定的（社群條 48px + 主 header 約 92px），
       錨點捲動要留出這段高度，否則目標會被蓋在 header 底下 */
    scroll-margin-top: 165px;
    transition: border-color .3s ease, box-shadow .3s ease;
}

/* 從首頁「近期活動」點進來時，標出是哪一筆 */
.calendar-list-item.is-highlight {
    border-color: var(--cal-accent);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, .18);
}

.calendar-list-date {
    flex-shrink: 0;
    width: 76px;
    text-align: center;
    padding-top: 2px;
}

.calendar-list-date .day {
    display: block;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--cal-primary);
}

.calendar-list-date .month,
.calendar-list-date .weekday {
    display: block;
    margin-top: 3px;
    font-size: 13px;
    line-height: 1.5;
    color: #718096;
}

.calendar-list-body {
    flex: 1;
    min-width: 0;
}

.calendar-list-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--cal-text);
    margin: 0 0 14px;
    /* 長標題會折成多行，行距要夠才不會擠在一起 */
    line-height: 1.6;
    /* 完整標題，不截斷 */
    overflow-wrap: break-word;
    word-break: break-word;
}

.calendar-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    margin-bottom: 14px;
    font-size: 14.5px;
    line-height: 1.6;
    color: #5a6779;
}

.calendar-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.calendar-meta i {
    color: var(--cal-muted);
}

.calendar-category-badge {
    display: inline-block;
    padding: 4px 13px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.6;
}

/* 標籤與其下方的標題之間要留白，否則兩段文字會黏在一起 */
.calendar-list-body > .calendar-category-badge {
    margin-bottom: 12px;
}

/* 活動內文：完整呈現，維持可讀行距 */
.calendar-description {
    font-size: 15.5px;
    line-height: 1.85;
    color: #3d4756;
    overflow-wrap: break-word;
    word-break: break-word;
}

.calendar-description p:last-child {
    margin-bottom: 0;
}

.calendar-description img {
    max-width: 100%;
    height: auto;
}

.calendar-description table {
    max-width: 100%;
}

.calendar-detail-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    padding: 9px 22px;
    background: var(--cal-primary);
    color: #fff;
    border-radius: 8px;
    font-size: 15px;
    text-decoration: none;
}

.calendar-detail-link:hover {
    background: #234069;
    color: #fff;
}

.calendar-empty {
    padding: 44px 20px;
    text-align: center;
    color: #718096;
    background: #f8fafc;
    border: 1px dashed var(--cal-border);
    border-radius: 10px;
}

.calendar-empty i {
    display: block;
    font-size: 30px;
    margin-bottom: 12px;
    color: #cbd5e0;
}

/* --- 詳情彈窗 --- */
.calendar-modal .modal-header {
    border-bottom: 1px solid var(--cal-border);
}

.calendar-modal .modal-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--cal-text);
    overflow-wrap: break-word;
    word-break: break-word;
}

.calendar-modal .modal-body {
    padding: 22px 24px 26px;
}

/* --- 首頁「近期活動」區塊 --- */
.upcoming-events {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.upcoming-card {
    display: flex;
    gap: 16px;
    padding: 18px 20px;
    background: #fff;
    border: 1px solid #dfe4ea;
    border-radius: 10px;
    text-decoration: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.upcoming-card:hover {
    border-color: #3182ce;
    box-shadow: 0 4px 14px rgba(44, 82, 130, .1);
    text-decoration: none;
}

.upcoming-card-date {
    flex-shrink: 0;
    width: 60px;
    text-align: center;
}

.upcoming-card-date .day {
    display: block;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.15;
    color: #2c5282;
}

.upcoming-card-date .month {
    display: block;
    font-size: 13px;
    color: #718096;
}

.upcoming-card-body {
    min-width: 0;
}

.upcoming-card-title {
    font-size: 16px;
    font-weight: 600;
    color: #2d3748;
    margin: 4px 0 8px;
    line-height: 1.5;
    overflow-wrap: break-word;
    word-break: break-word;
}

.upcoming-card-meta {
    font-size: 13.5px;
    color: #718096;
    overflow-wrap: break-word;
    word-break: break-word;
}

/* --- 手機版：月曆改為可橫向捲動，格子不擠壓 --- */
@media (max-width: 767.98px) {
    .calendar-toolbar {
        justify-content: center;
    }

    .calendar-current-month {
        font-size: 18px;
        min-width: 120px;
    }

    .calendar-grid-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .calendar-grid {
        min-width: 620px;
    }

    .calendar-grid td {
        height: 92px;
        padding: 4px;
    }

    .calendar-event {
        font-size: 12.5px;
        padding: 4px 6px;
    }

    .calendar-list-item {
        flex-direction: column;
        gap: 10px;
        padding: 16px;
        scroll-margin-top: 150px;
    }

    .calendar-list-date {
        display: flex;
        align-items: baseline;
        gap: 8px;
        width: auto;
        text-align: left;
    }

    .calendar-list-date .day {
        font-size: 24px;
    }
}