/* ========================================
   科研平台/成果推介专用列表样式
   ======================================== */

/* ===== 内容列表样式 ===== */
.content-list {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
}

/* 列表项 - 图片+说明布局 */
.list-item-platform {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    border-bottom: 1px solid #f5f7fa;
    transition: all 0.3s ease;
    position: relative;
    background: #fff;
    cursor: pointer;
}

.list-item-platform:last-child {
    border-bottom: none;
}

.list-item-platform:hover {
    background: #fafbfd;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transform: translateX(3px);
}

/* 让整个列表项可点击 */
.list-item-platform .platform-title a::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

/* 左侧图片区域 */
.platform-image {
    flex-shrink: 0;
    width: 220px;
    height: 150px;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.platform-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.list-item-platform:hover .platform-image img {
    transform: scale(1.05);
}

/* 完全隐藏无图片的容器 - 不显示任何占位符 */
.platform-image:empty,
.platform-image.no-image {
    display: none !important;
}

/* 无图片时，调整列表项左侧内边距 */
.list-item-platform:has(.platform-image:empty),
.list-item-platform:has(.platform-image.no-image) {
    padding-left: 25px;
}

/* 无图片时，内容区域占满整行 */
.list-item-platform:has(.platform-image:empty) .platform-content,
.list-item-platform:has(.platform-image.no-image) .platform-content {
    max-width: 100%;
}

/* 无图片时，增强左侧装饰条显示 */
.list-item-platform:has(.platform-image:empty)::before,
.list-item-platform:has(.platform-image.no-image)::before {
    opacity: 0.7;
    width: 4px;
    height: 70%;
}

/* 无图片时，标题样式微调 */
.list-item-platform:has(.platform-image:empty) .platform-title,
.list-item-platform:has(.platform-image.no-image) .platform-title {
    font-size: 18px;
    line-height: 1.6;
}

/* 无图片时，描述文字最多显示3行 */
.list-item-platform:has(.platform-image:empty) .platform-desc,
.list-item-platform:has(.platform-image.no-image) .platform-desc {
    -webkit-line-clamp: 3;
}

/* 图片上的标签 */
.platform-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.35);
    z-index: 2;
}

.platform-badge.achievement {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    box-shadow: 0 2px 6px rgba(245, 87, 108, 0.35);
}

.platform-badge.team {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    box-shadow: 0 2px 6px rgba(79, 172, 254, 0.35);
}

/* 右侧内容区域 */
.platform-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

/* 标题 */
.platform-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    line-height: 1.5;
    margin: 0;
    transition: color 0.3s ease;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.platform-title a {
    color: #1a1a1a;
    text-decoration: none;
    transition: color 0.3s ease;
}

.list-item-platform:hover .platform-title a {
    color: #1e88e5;
}

/* 描述文字 */
.platform-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 元信息 */
.platform-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: #999;
    margin-top: 4px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.meta-icon {
    font-size: 14px;
    opacity: 0.8;
}

.meta-label {
    color: #888;
    font-weight: normal;
}

.meta-value {
    color: #666;
}

.meta-separator {
    display: none;
}

/* 标签 - 隐藏 */
.platform-tags {
    display: none;
}

/* 底部操作区 - 隐藏 */
.platform-footer {
    display: none;
}

/* ===== 响应式设计 ===== */

/* 平板设备 */
@media (max-width: 1024px) {
    .platform-image {
        width: 200px;
        height: 140px;
    }
    
    /* 无图片时减少左侧内边距 */
    .list-item-platform:has(.platform-image:empty),
    .list-item-platform:has(.platform-image.no-image) {
        padding-left: 20px;
    }
    
    .platform-title {
        font-size: 17px;
    }
    
    .platform-desc {
        font-size: 13px;
    }
}

/* 小屏幕 - 768px及以下 */
@media (max-width: 768px) {
    /* 主内容区域优化 */
    .main-content {
        padding-top: 20px !important;
        padding-bottom: 20px !important;
    }
    
    .content-layout {
        gap: 15px;
    }
    
    .content-main {
        padding: 0 10px !important;
    }
    
    .content-header {
        margin-bottom: 15px;
        padding: 0 5px;
    }
    
    .content-header .content-title {
        font-size: 18px;
    }
    
    /* 列表样式 */
    .content-list {
        border-radius: 8px;
        margin: 0;
    }
    
    .list-item-platform {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 15px;
        margin: 0;
        border-radius: 0;
    }
    
    .platform-image {
        width: 100% !important;
        height: 200px !important;
        border-radius: 8px;
        margin: 0;
    }
    
    .platform-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    /* 移动端无图片时隐藏图片区域 */
    .platform-image.no-image,
    .platform-image:empty {
        display: none !important;
        height: 0 !important;
        margin: 0 !important;
    }
    
    /* 移动端无图片时正常内边距 */
    .list-item-platform:has(.platform-image:empty),
    .list-item-platform:has(.platform-image.no-image) {
        padding: 15px !important;
    }
    
    .platform-content {
        width: 100%;
        gap: 10px;
    }
    
    .platform-title {
        font-size: 16px;
        line-height: 1.5;
        -webkit-line-clamp: 2;
    }
    
    .platform-desc {
        font-size: 14px;
        line-height: 1.6;
        -webkit-line-clamp: 3;
    }
    
    .platform-meta {
        gap: 12px;
        font-size: 12px;
        flex-wrap: wrap;
    }
    
    .meta-icon {
        font-size: 13px;
    }
    
    /* 移动端hover效果调整 */
    .list-item-platform:hover {
        transform: none;
    }
    
    .list-item-platform::before {
        display: none;
    }
    
    /* 移动端分页优化 */
    .pagination {
        flex-direction: column;
        gap: 15px;
        padding: 15px 10px;
    }
    
    .pagination-info {
        text-align: center;
        width: 100%;
    }
    
    .pagination-nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .pagination-link,
    .pagination-current {
        padding: 8px 12px;
        font-size: 13px;
    }
}

/* 移动端 - 480px及以下 */
@media (max-width: 480px) {
    /* 主内容区域优化 */
    .main-content {
        padding-top: 15px !important;
        padding-bottom: 15px !important;
    }
    
    .content-main {
        padding: 0 8px !important;
    }
    
    .content-header {
        margin-bottom: 12px;
        padding: 0 5px;
    }
    
    .content-header .content-title {
        font-size: 17px;
    }
    
    /* 列表样式 */
    .content-list {
        border-radius: 6px;
        margin: 0;
    }
    
    .list-item-platform {
        padding: 12px !important;
        gap: 10px;
    }
    
    /* 移动端无图片时正常内边距 */
    .list-item-platform:has(.platform-image:empty),
    .list-item-platform:has(.platform-image.no-image) {
        padding: 12px !important;
    }
    
    .platform-image {
        height: 180px !important;
        border-radius: 6px;
    }
    
    .platform-content {
        gap: 8px;
    }
    
    .platform-title {
        font-size: 15px;
        line-height: 1.4;
    }
    
    .platform-desc {
        font-size: 13px;
        line-height: 1.6;
    }
    
    .platform-meta {
        gap: 10px;
        font-size: 11px;
    }
    
    .meta-item {
        gap: 4px;
    }
    
    .meta-label {
        display: none;
    }
    
    .pagination-link,
    .pagination-current {
        padding: 6px 10px;
        font-size: 12px;
    }
}

/* 超小屏幕 - 360px及以下 */
@media (max-width: 360px) {
    .list-item-platform {
        padding: 10px !important;
        gap: 8px;
    }
    
    .platform-image {
        height: 160px !important;
    }
    
    .platform-title {
        font-size: 14px;
    }
    
    .platform-desc {
        font-size: 12px;
        -webkit-line-clamp: 2;
    }
    
    .platform-meta {
        gap: 8px;
        font-size: 10px;
    }
    
    .pagination-nav {
        gap: 5px;
    }
    
    .pagination-link,
    .pagination-current {
        padding: 5px 8px;
        font-size: 11px;
    }
}

/* ===== 分页样式优化 ===== */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-top: 20px;
}

.pagination-info {
    font-size: 13px;
    color: #7f8c8d;
}

.pagination-info .total-count {
    color: #1e88e5;
    font-weight: 700;
    font-size: 15px;
    margin: 0 2px;
}

.pagination-nav {
    display: flex;
    gap: 6px;
}

.pagination-link,
.pagination-current {
    padding: 6px 14px;
    border-radius: 5px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid #e5e9ed;
}

.pagination-link {
    color: #606c76;
    background: #fff;
}

.pagination-link:hover {
    background: #1e88e5;
    color: #fff;
    border-color: #1e88e5;
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(30, 136, 229, 0.25);
}

.pagination-current {
    background: linear-gradient(135deg, #1e88e5, #1565c0);
    color: #fff;
    border-color: #1e88e5;
    font-weight: 600;
    box-shadow: 0 3px 6px rgba(30, 136, 229, 0.25);
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state-text {
    font-size: 16px;
    color: #95a5a6;
}

/* ===== 加载状态 ===== */
.loading-state {
    text-align: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #1e88e5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 特殊效果 ===== */
.list-item-platform::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 60%;
    width: 3px;
    background: linear-gradient(180deg, #1e88e5, #667eea);
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 0 2px 2px 0;
}

.list-item-platform:hover::before {
    opacity: 1;
    height: 80%;
}

/* ===== 打印样式 ===== */
@media print {
    .list-item-platform {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .platform-badge {
        background: #333 !important;
    }
    
    .platform-link {
        color: #000;
    }
}