/* 线下活动页 - 四个独立活动区块样式 */

.offline-activities .content-sections .container {
    max-width: 1000px;
}

/* 最新活动 / 已结束活动 切换标签 */
.activity-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 28px;
    border-bottom: 2px solid #e4edf8;
}

.activity-tab {
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    color: #718096;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    font-family: inherit;
    transition: color 0.2s, border-color 0.2s;
}

.activity-tab:hover {
    color: var(--deep-space-blue, #1a365d);
}

.activity-tab.active {
    color: var(--deep-space-blue, #1a365d);
    border-bottom-color: var(--light-blue, #3e92cc);
}

.activity-tab-panel-hidden {
    display: none !important;
}

/* 已结束活动面板 */
.ended-activities-intro {
    margin-bottom: 24px;
    padding: 16px 20px;
    background: #f7fafc;
    border-radius: 10px;
    border: 1px solid #e4edf8;
}

.ended-activities-intro p {
    margin: 0;
    font-size: 14px;
    color: #4a5568;
    line-height: 1.6;
}

.activity-cards.activity-cards-ended {
    margin-top: 0;
    align-items: stretch;
}

/* 已结束活动卡片 - 灰色样式 */
.activity-card-ended {
    opacity: 0.92;
    display: flex;
    flex-direction: column;
    min-height: 100%;
    position: relative;
    cursor: default;
}

.activity-card-ended .activity-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: 48px;
}

.activity-card-ended .activity-card-img-wrap {
    position: relative;
}

.activity-card-ended-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #fff;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
}

.activity-card-ended .activity-card-title {
    color: #4a5568;
}

.activity-card-ended .activity-card-cta-ended {
    position: absolute;
    bottom: 18px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: fit-content;
    display: inline-block;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: #718096;
    background: #e2e8f0;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
}

.activity-card-ended:hover .activity-card-cta-ended {
    background: #cbd5e0;
    color: #4a5568;
}

.activity-card-ended:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.offline-activity-block {
    margin-bottom: 56px;
    padding: 32px 28px;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.offline-activity-block:target {
    scroll-margin-top: 120px;
}

.offline-activity-block::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    border-radius: 4px 0 0 4px;
}

.offline-activity-block .block-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 20px;
}

.offline-activity-block .block-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.offline-activity-block .block-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--deep-space-blue, #1a365d);
    margin: 0;
    padding: 0;
    border: none;
    line-height: 1.3;
}

.offline-activity-block .block-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--dark-gray, #4a5568);
    margin: 0 0 20px 0;
}

.offline-activity-block .block-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.offline-activity-block .block-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    background: rgba(0, 0, 0, 0.06);
    color: var(--dark-gray, #4a5568);
}

.offline-activity-block .block-cta-wrap {
    margin-top: 28px;
    text-align: center;
}

.offline-activity-block .block-cta {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.2s;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.offline-activity-block .block-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.activity-card-hidden {
    display: none !important;
}

/* 高校专业实践营 - 深蓝强调 */
.offline-activity-university::before {
    background: linear-gradient(180deg, #2c5282 0%, #2b6cb0 100%);
}

.offline-activity-university .block-icon {
    background: linear-gradient(135deg, #2c5282 0%, #2b6cb0 100%);
}

.offline-activity-university .block-tag {
    background: rgba(44, 82, 130, 0.12);
    color: #2c5282;
}

.offline-activity-university .block-cta {
    background: linear-gradient(135deg, #2c5282 0%, #2b6cb0 100%);
    color: #fff;
}

/* 科研院所CASP - 青绿强调 */
.offline-activity-casp::before {
    background: linear-gradient(180deg, #276749 0%, #38a169 100%);
}

.offline-activity-casp .block-icon {
    background: linear-gradient(135deg, #276749 0%, #38a169 100%);
}

.offline-activity-casp .block-tag {
    background: rgba(39, 103, 73, 0.12);
    color: #276749;
}

.offline-activity-casp .block-cta {
    background: linear-gradient(135deg, #276749 0%, #38a169 100%);
    color: #fff;
}

/* 企业实景参访 - 橙金强调 */
.offline-activity-enterprise::before {
    background: linear-gradient(180deg, #c05621 0%, #dd6b20 100%);
}

.offline-activity-enterprise .block-icon {
    background: linear-gradient(135deg, #c05621 0%, #dd6b20 100%);
}

.offline-activity-enterprise .block-tag {
    background: rgba(192, 86, 33, 0.12);
    color: #c05621;
}

.offline-activity-enterprise .block-cta {
    background: linear-gradient(135deg, #c05621 0%, #dd6b20 100%);
    color: #fff;
}

/* 教师真境赋能活动 - 紫罗兰强调 */
.offline-activity-teacher::before {
    background: linear-gradient(180deg, #553c9a 0%, #6b46c1 100%);
}

.offline-activity-teacher .block-icon {
    background: linear-gradient(135deg, #553c9a 0%, #6b46c1 100%);
}

.offline-activity-teacher .block-tag {
    background: rgba(85, 60, 154, 0.12);
    color: #553c9a;
}

.offline-activity-teacher .block-cta {
    background: linear-gradient(135deg, #553c9a 0%, #6b46c1 100%);
    color: #fff;
}

/* 线下活动卡片网格 */
.activity-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.activity-card {
    display: block;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.25s, transform 0.25s;
}

.activity-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

.activity-card-img-wrap {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: #f0f2f5;
}

.activity-card-img-wrap img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.activity-card-body {
    padding: 18px 16px 20px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.activity-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-space-blue, #1a365d);
    margin: 0 0 8px 0;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-card-meta {
    font-size: 12px;
    color: #718096;
    margin: 0 0 10px 0;
    line-height: 1.4;
}

.activity-card-desc {
    font-size: 13px;
    line-height: 1.6;
    color: var(--dark-gray, #4a5568);
    margin: 0 0 14px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 16px;
}

.activity-card-cta {
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    display: inline-block;
    color: #fff;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.2s;
}

.activity-card-cta-detail {
    background: #fff;
    color: var(--deep-space-blue);
    border: 1px solid rgba(62, 146, 204, 0.4);
}

.activity-card-cta-detail:hover {
    background: #f8fcff;
    border-color: var(--light-blue);
}

.activity-card:hover .activity-card-cta:not(.activity-card-cta-detail) {
    opacity: 0.95;
    transform: translateY(-1px);
}

.activity-card-ended:hover .activity-card-cta-ended {
    transform: translateY(-1px);
}

/* 各区块内卡片按钮强调色（仅立即报名） */
.offline-activity-university .activity-card-cta:not(.activity-card-cta-detail) {
    background: linear-gradient(135deg, #2c5282 0%, #2b6cb0 100%);
}
.offline-activity-university .activity-card:hover .activity-card-cta:not(.activity-card-cta-detail) {
    box-shadow: 0 4px 12px rgba(44, 82, 130, 0.4);
}
.offline-activity-casp .activity-card-cta:not(.activity-card-cta-detail) {
    background: linear-gradient(135deg, #276749 0%, #38a169 100%);
}
.offline-activity-casp .activity-card:hover .activity-card-cta:not(.activity-card-cta-detail) {
    box-shadow: 0 4px 12px rgba(39, 103, 73, 0.4);
}
.offline-activity-enterprise .activity-card-cta:not(.activity-card-cta-detail) {
    background: linear-gradient(135deg, #c05621 0%, #dd6b20 100%);
}
.offline-activity-enterprise .activity-card:hover .activity-card-cta:not(.activity-card-cta-detail) {
    box-shadow: 0 4px 12px rgba(192, 86, 33, 0.4);
}
.offline-activity-teacher .activity-card-cta:not(.activity-card-cta-detail) {
    background: linear-gradient(135deg, #553c9a 0%, #6b46c1 100%);
}
.offline-activity-teacher .activity-card:hover .activity-card-cta:not(.activity-card-cta-detail) {
    box-shadow: 0 4px 12px rgba(85, 60, 154, 0.4);
}

@media (max-width: 992px) {
    .activity-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .activity-tabs {
        margin-bottom: 20px;
    }
    .activity-tab {
        padding: 10px 20px;
        font-size: 14px;
    }
    .offline-activity-block {
        padding: 24px 20px;
        margin-bottom: 40px;
    }
    .offline-activity-block .block-header {
        gap: 14px;
    }
    .offline-activity-block .block-icon {
        width: 44px;
        height: 44px;
    }
    .offline-activity-block .block-title {
        font-size: 20px;
    }
    .offline-activity-block .block-desc {
        font-size: 14px;
    }
    .activity-cards {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 24px;
    }
    .activity-card-body {
        padding: 14px 12px 16px;
    }
    .activity-card-title {
        font-size: 15px;
    }
}