/* ===== About Page Sections ===== */
.about-section {
    padding: 80px 0;
}

.section-header-center {
    text-align: center;
    margin-bottom: 60px;
}

.section-header-center {
    text-align: center;
    margin-bottom: 60px;
}

.about-section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: #1e3a5f;
    margin-bottom: 12px;
}

.section-header-center .section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* 学院简介 */
.about-intro-wrapper {
    display: block;
}

.about-intro-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e3a5f;
    margin-bottom: 20px;
}

.about-intro-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-intro-text strong {
    color: var(--xmu-blue);
    font-weight: 700;
}

[data-theme="dark"] .about-intro-text strong {
    color: var(--xmu-blue-light);
}

/* 简介分块排版 */
.intro-blocks {
    margin-top: 8px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px 44px;
    align-items: start;
}

.intro-block {
    padding-left: 18px;
    border-left: 3px solid var(--xmu-blue);
}

.intro-block-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.intro-block-title i {
    color: var(--xmu-blue);
    font-size: 1rem;
}

.intro-block .about-intro-text {
    margin-bottom: 0;
}

[data-theme="dark"] .intro-block-title i {
    color: var(--xmu-blue-light);
}

.about-intro-features {
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.intro-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 26px 18px;
    box-shadow: var(--shadow-sm);
    transition: transform .2s, box-shadow .2s;
}

.intro-feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.intro-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--xmu-blue), var(--xmu-blue-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.intro-feature-text {
    display: flex;
    flex-direction: column;
}

.intro-feature-text strong {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.intro-feature-text span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* 学院领导 */
.leadership-section {
    background: var(--bg-secondary);
}

/* 学院领导 —— 表格形式 */
.leadership-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.leadership-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: 0.9375rem;
    min-width: 560px;
}

.leadership-table thead th {
    background: linear-gradient(135deg, var(--xmu-blue), var(--xmu-blue-light));
    color: #fff;
    font-weight: 600;
    text-align: left;
    padding: 16px 20px;
    white-space: nowrap;
}

.leadership-table tbody td {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
    line-height: 1.6;
    vertical-align: top;
}

.leadership-table tbody tr:nth-child(even) {
    background: var(--bg-secondary);
}

.leadership-table tbody tr:hover {
    background: rgba(0, 102, 204, 0.06);
}

.leadership-table .ld-name {
    font-weight: 600;
    white-space: nowrap;
}

.leadership-table .ld-position {
    color: var(--xmu-blue);
    font-weight: 500;
    white-space: nowrap;
}

.leadership-table .ld-duty {
    color: var(--text-secondary);
}

.leadership-table .ld-email {
    white-space: nowrap;
}

.leadership-table .ld-email a {
    color: var(--xmu-blue);
    text-decoration: none;
    transition: color .2s, text-decoration .2s;
}

.leadership-table .ld-email a:hover {
    color: var(--xmu-red);
    text-decoration: underline;
}

/* 机构设置 */
.org-chart {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.org-level {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.org-level-top {
    margin-bottom: 0;
}

.org-connector {
    width: 2px;
    height: 40px;
    background: var(--xmu-blue);
    margin: 0 auto;
}

.org-level-middle {
    margin-bottom: 0;
}

.org-level-bottom {
    margin-top: 0;
}

.org-dept-header {
    margin: 32px 0 16px;
    position: relative;
}

.org-dept-tag {
    display: inline-block;
    padding: 8px 24px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.org-dept-tag-support {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.org-dept-tag-admin {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

.org-level-dept {
    gap: 16px;
    margin-bottom: 8px;
}

.org-level-dept .org-node {
    min-width: 160px;
    padding: 16px 20px;
    border-color: #10b981;
}

.org-level-dept .org-node:hover {
    background: #10b981;
}

.org-node {
    background: white;
    border: 2px solid var(--xmu-blue);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    min-width: 180px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all var(--transition-fast);
}

.org-node:hover {
    background: var(--xmu-blue);
    color: white;
}

.org-node:hover .org-node-content h4,
.org-node:hover .org-node-content p {
    color: white;
}

.org-node-main {
    background: var(--xmu-blue);
    color: white;
    padding: 24px 32px;
}

.org-node-main .org-node-content h4,
.org-node-main .org-node-content p {
    color: white;
}

.org-node-icon {
    font-size: 1.5rem;
    color: var(--xmu-blue);
}

.org-node-main .org-node-icon {
    color: white;
}

.org-node:hover .org-node-icon {
    color: white;
}

.org-node-content {
    text-align: left;
}

.org-node-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.org-node-content p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 业务团队 */
.team-section {
    background: var(--bg-secondary);
}

/* Team Tabs - 与首页学习资源tab风格一致 */
.team-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.team-tab {
    padding: 12px 24px;
    background: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.team-tab .tab-icon {
    font-size: 0.875rem;
}

.team-tab:hover,
.team-tab.active {
    background: var(--xmu-blue);
    color: white;
}

/* Team Panels */
.team-panels {
    position: relative;
}

.team-panel {
    display: none;
}

.team-panel.active {
    display: block;
}

/* Team Carousel */
.team-carousel-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
}

.team-track {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    padding: 8px 0;
    flex: 1;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.team-track::-webkit-scrollbar {
    display: none;
}

.team-carousel-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.team-carousel-btn:hover {
    background: var(--xmu-blue);
    border-color: var(--xmu-blue);
    color: white;
}

/* Team Member Card - vertically centered */
.team-member-card {
    flex: 0 0 calc(20% - 16px);
    min-width: 180px;
    height: 260px;
    background: white;
    border-radius: var(--radius-lg);
    padding: 16px 14px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.team-member-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.team-member-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--xmu-blue);
    padding: 3px;
    background: white;
    flex-shrink: 0;
    margin-bottom: 16px;
}

.team-member-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.team-member-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 2px;
    line-height: 1.3;
}

.team-member-position {
    font-size: 0.875rem;
    color: var(--xmu-blue);
    font-weight: 500;
    margin: 0 0 2px;
    line-height: 1.3;
}

.team-member-title {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.3;
    margin: 0;
}

.team-leader {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
    font-size: 0.8125rem;
}

.leader-label {
    color: var(--xmu-blue);
    font-weight: 600;
}

.leader-name {
    color: var(--text-primary);
}

.team-members {
    margin-top: 8px;
    font-size: 0.75rem;
    line-height: 1.6;
}

.members-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.members-list {
    color: var(--text-secondary);
}

/* 联系信息 */
.contact-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.contact-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--xmu-blue);
}

.contact-card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--xmu-blue), var(--xmu-blue-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-card-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-card-content .contact-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--xmu-blue);
    margin-bottom: 4px;
}

.contact-card-content .contact-hours {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Dark Mode */
[data-theme="dark"] .about-section-title {
    color: #fff;
}

[data-theme="dark"] .section-desc {
    color: var(--text-secondary);
}

[data-theme="dark"] .about-intro-title {
    color: #fff;
}

[data-theme="dark"] .about-intro-text {
    color: var(--text-secondary);
}

[data-theme="dark"] .intro-feature-text strong {
    color: #fff;
}

[data-theme="dark"] .intro-feature-text span {
    color: var(--text-secondary);
}

[data-theme="dark"] .team-member-card,
[data-theme="dark"] .contact-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .team-member-name,
[data-theme="dark"] .org-node-content h4,
[data-theme="dark"] .contact-card-content h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .team-member-title,
[data-theme="dark"] .org-node-content p,
[data-theme="dark"] .contact-card-content .contact-hours {
    color: var(--text-secondary);
}

/* 学院领导表格 —— 暗色主题 */
[data-theme="dark"] .leadership-table-wrap {
    border-color: var(--border-color);
}

[data-theme="dark"] .leadership-table {
    background: var(--bg-secondary);
}

[data-theme="dark"] .leadership-table tbody td {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .leadership-table tbody tr:nth-child(even) {
    background: var(--bg-primary);
}

[data-theme="dark"] .leadership-table tbody tr:hover {
    background: rgba(0, 102, 204, 0.18);
}

[data-theme="dark"] .leadership-table .ld-duty {
    color: var(--text-secondary);
}

[data-theme="dark"] .team-tab {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

[data-theme="dark"] .team-tab:hover,
[data-theme="dark"] .team-tab.active {
    background: var(--xmu-blue);
    color: white;
}

[data-theme="dark"] .org-node {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .org-node:hover {
    background: var(--xmu-blue);
    border-color: var(--xmu-blue);
}

[data-theme="dark"] .org-node:hover .org-node-content h4,
[data-theme="dark"] .org-node:hover .org-node-content p {
    color: white;
}

[data-theme="dark"] .team-carousel-btn {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .team-carousel-btn:hover {
    background: var(--xmu-blue);
    border-color: var(--xmu-blue);
    color: white;
}

/* Responsive */
@media (max-width: 1024px) {
    .team-member-card {
        flex: 0 0 calc(33.333% - 14px);
        min-width: 160px;
    }
}

@media (max-width: 768px) {
    .about-intro-wrapper {
        grid-template-columns: 1fr;
        gap: 32px;
        align-items: start;
    }

    .about-intro-features {
        grid-template-columns: 1fr;
    }

    .intro-blocks {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .org-chart {
        padding: 0 16px;
    }

    .org-level {
        flex-direction: column;
        align-items: center;
    }

    .org-node {
        width: 100%;
        max-width: 280px;
    }

    .team-member-card {
        flex: 0 0 100%;
        min-width: auto;
    }

    .contact-cards {
        grid-template-columns: 1fr;
    }

    .contact-actions {
        flex-direction: column;
    }

    .section-header-center .section-title {
        font-size: 1.75rem;
    }
}

/* ===== Milestones (College History Timeline) ===== */
.milestone-section {
    background: #fff;
}

.timeline {
    position: relative;
    max-width: 1300px;
    margin: 0 auto;
    padding: 10px 0 20px;
}

/* 中央竖线 */
.timeline::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 20px;
    width: 3px;
    background: linear-gradient(180deg, var(--xmu-blue) 0%, var(--xmu-blue-light) 100%);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    display: block !important;
    width: 50%;
    padding: 0 36px 16px !important;
    margin-bottom: 4px;
    box-sizing: border-box;
}

.timeline-item.left {
    left: 0;
    text-align: left;
}

.timeline-item.right {
    left: 50%;
    text-align: left;
}

/* 中央圆点节点 */
.timeline-dot {
    position: absolute;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--xmu-blue);
    border: 4px solid #fff;
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.18);
    z-index: 2;
    transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}

.timeline-item.left .timeline-dot {
    right: -9px;
}

.timeline-item.right .timeline-dot {
    left: -9px;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.35);
    background: #e63946;
    box-shadow: 0 0 0 5px rgba(230, 57, 70, 0.22);
}

/* 事件卡片 */
.milestone-card {
    display: block;
    width: 100%;
    box-sizing: border-box;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px 16px;
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.timeline-item.left .milestone-card {
    text-align: left;
    width: fit-content;
    max-width: 100%;
    min-width: 300px;
    margin-left: auto;
}

.timeline-item.right .milestone-card {
    text-align: left;
    width: fit-content;
    max-width: 100%;
    min-width: 300px;
    margin-right: auto;
}

.timeline-item.left .milestone-card .milestone-year,
.timeline-item.left .milestone-card .milestone-text {
    text-align: left;
}

.milestone-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--xmu-blue);
}

.milestone-year {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--xmu-blue);
    line-height: 1;
    margin-bottom: 6px;
}

.timeline-item:hover .milestone-year {
    color: #e63946;
}

.milestone-text {
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0;
}

/* 暗色主题 */
[data-theme="dark"] .milestone-section {
    background: var(--bg-primary);
}

[data-theme="dark"] .timeline-dot {
    border-color: var(--bg-primary);
    background: var(--xmu-blue-light);
}

[data-theme="dark"] .milestone-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .milestone-card:hover {
    border-color: var(--xmu-blue-light);
}

/* 移动端：单列布局 */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    .timeline-item {
        width: 100% !important;
        left: 0 !important;
        padding: 0 0 28px 52px !important;
        text-align: left !important;
    }
    .timeline-item.left .timeline-dot,
    .timeline-item.right .timeline-dot {
        left: 11px;
        right: auto;
    }
    .timeline-item.left .milestone-card,
    .timeline-item.right .milestone-card {
        text-align: left;
    }
    .timeline-item.left .milestone-card .milestone-year,
    .timeline-item.left .milestone-card .milestone-text {
        text-align: left;
    }
    .timeline-item.left .milestone-card,
    .timeline-item.right .milestone-card {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        margin: 0;
    }
}