/* ==================== 
   新闻动态板块 - 优化版
   ==================== */

/* 新闻控制栏 */
.news-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.news-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid rgba(0,0,0,0.1);
    background: var(--white);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* 新闻搜索 */
.news-search {
    display: flex;
    gap: 10px;
}

.search-input {
    padding: 10px 16px;
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: 20px;
    font-size: 0.9rem;
    width: 220px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.search-btn {
    padding: 10px 20px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--primary-dark);
}

/* 新闻网格 - 统一布局 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

/* 新闻卡片 - 统一样式 */
.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 380px;
    animation: fadeInUp 0.6s ease-out backwards;
    border: 1px solid rgba(0,0,0,0.05);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.3);
}

/* 头条新闻特殊样式 */
.news-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05), rgba(78, 205, 196, 0.05));
    border: 2px solid rgba(255, 107, 53, 0.3);
    min-height: 420px;
}

.featured-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: var(--dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
    z-index: 10;
}

.featured-badge i {
    color: #f39c12;
}

/* 卡片头部 */
.news-card-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    background: rgba(255,255,255,0.8);
}

.news-category {
    padding: 6px 14px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--white);
    display: inline-block;
}

.news-date {
    font-size: 0.85rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 卡片主体 */
.news-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 3em;
}

.news-card.featured .news-title {
    font-size: 1.3rem;
    min-height: 3.5em;
}

.news-summary {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.news-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}

.news-tags .tag {
    padding: 4px 12px;
    background: rgba(78, 205, 196, 0.1);
    color: var(--secondary);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 卡片底部 */
.news-card-footer {
    padding: 16px 24px;
    border-top: 1px solid rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0,0,0,0.02);
}

.news-source {
    font-size: 0.85rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}

.read-more-btn {
    padding: 8px 16px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.read-more-btn:hover {
    background: var(--primary-dark);
    transform: translateX(4px);
}

/* 加载更多 */
.news-load-more {
    text-align: center;
    margin-bottom: 30px;
}

#loadMoreBtn {
    padding: 14px 40px;
    font-size: 1rem;
    gap: 10px;
}

/* 更新信息 */
.news-update-info {
    text-align: center;
    padding: 30px;
    background: rgba(78, 205, 196, 0.05);
    border-radius: var(--radius);
    border: 2px dashed var(--secondary);
}

.update-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.update-badge i {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.update-desc {
    font-size: 0.9rem;
    color: var(--gray);
    margin: 0;
}

/* ==================== 
   新闻详情弹窗 - 优化版
   ==================== */

.news-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.news-modal.active {
    opacity: 1;
    visibility: visible;
}

.news-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
}

.news-modal-container {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-lg);
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    transform: translateY(50px) scale(0.95);
    transition: all 0.3s ease;
    z-index: 10001;
}

.news-modal.active .news-modal-container {
    transform: translateY(0) scale(1);
}

/* 弹窗头部 */
.news-modal-header {
    position: sticky;
    top: 0;
    background: var(--white);
    padding: 24px 30px;
    border-bottom: 2px solid rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.modal-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.modal-category {
    padding: 6px 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
    display: inline-block;
}

.modal-date {
    font-size: 0.9rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}

.modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(0,0,0,0.05);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.2rem;
    color: var(--dark);
}

.modal-close:hover {
    background: rgba(0,0,0,0.1);
    transform: rotate(90deg);
    color: var(--primary);
}

/* 弹窗主体 */
.news-modal-body {
    padding: 40px;
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    line-height: 1.4;
}

.modal-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding: 20px;
    background: rgba(0,0,0,0.03);
    border-radius: var(--radius);
    flex-wrap: wrap;
    gap: 16px;
}

.modal-source {
    font-size: 0.95rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.modal-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.modal-tags .tag {
    padding: 6px 14px;
    background: rgba(78, 205, 196, 0.1);
    color: var(--secondary);
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 弹窗内容 */
.modal-content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--dark);
}

.modal-content p {
    margin-bottom: 24px;
    text-align: justify;
}

.modal-content .content-list {
    margin: 24px 0;
    padding-left: 24px;
}

.modal-content .content-list li {
    margin-bottom: 12px;
    line-height: 1.8;
}

.modal-content ol.content-list {
    list-style-type: decimal;
}

.modal-content ul.content-list {
    list-style-type: disc;
}

/* 原文链接 */
.original-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary), #ff8c42);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    margin-top: 32px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.original-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* 无新闻/错误提示 */
.no-news, .error-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--gray);
}

.no-news i, .error-message i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
}

.no-news p, .error-message p {
    font-size: 1.1rem;
}

/* ==================== 
   响应式适配
   ==================== */

@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-card.featured {
        grid-column: span 1;
    }
    
    .modal-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 768px) {
    .news-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .news-filter {
        justify-content: center;
    }
    
    .news-search {
        justify-content: center;
    }
    
    .search-input {
        width: 100%;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-modal-body {
        padding: 24px;
    }
    
    .modal-title {
        font-size: 1.4rem;
    }
    
    .modal-header-left {
        gap: 12px;
    }
    
    .modal-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}