/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    min-height: 100vh;
    color: #333;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 - 庄重专业风格 */
.header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    backdrop-filter: blur(15px);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2980b9, #1f5f8b, #3498db);
    background-size: 200% 100%;
    animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.header h1 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 8px;
    font-weight: 700;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header h1 .emoji {
    filter: drop-shadow(0 2px 4px rgba(52, 152, 219, 0.3));
    margin-right: 8px;
}

.header p {
    color: #5a6c7d;
    font-size: 1rem;
    font-weight: 500;
}

/* 搜索框样式 */
.search-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 6px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(52, 152, 219, 0.2);
    max-width: 300px;
    width: 100%;
    transition: all 0.3s ease;
}

.search-box:focus-within {
    box-shadow: 0 6px 25px rgba(52, 152, 219, 0.2);
    border-color: #3498db;
}

#searchInput {
    flex: 1;
    border: none;
    outline: none;
    padding: 8px 12px;
    font-size: 0.85rem;
    background: transparent;
    color: #2c3e50;
}

#searchInput::placeholder {
    color: #95a5a6;
}

#searchBtn, #clearSearchBtn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-left: 6px;
}

#searchBtn:hover, #clearSearchBtn:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: scale(1.05);
}

#clearSearchBtn {
    background: linear-gradient(135deg, #e74c3c, #c0392b) !important;
    color: white !important;
    border: 1px solid #c0392b !important;
}

#clearSearchBtn:hover {
    background: linear-gradient(135deg, #c0392b, #a93226) !important;
    transform: scale(1.05);
}

/* 搜索高亮样式 */
.search-highlight {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(243, 156, 18, 0.3);
}

/* 控制面板样式 */
.control-panel {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.control-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.btn {
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.btn-success {
    background: linear-gradient(45deg, #27ae60, #2ecc71);
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
}

.btn-success:hover {
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.4);
}

.btn-danger {
    background: linear-gradient(45deg, #e74c3c, #c0392b);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

.btn-info {
    background: linear-gradient(45deg, #17a2b8, #138496);
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.3);
}

.btn-info:hover {
    box-shadow: 0 6px 20px rgba(23, 162, 184, 0.4);
}

.btn-warning {
    background: linear-gradient(45deg, #ffc107, #e0a800);
    color: #212529;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.btn-warning:hover {
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
}

/* 统计面板样式 */
.stats-panel {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: none;
}

.stats-panel h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    border-left: 4px solid #3498db;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.stat-label {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.scheduler-info {
    background: linear-gradient(135deg, #e8f5e8, #d4edda);
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #28a745;
}

.scheduler-info h4 {
    color: #155724;
    margin-bottom: 10px;
}

.scheduler-info p {
    margin: 5px 0;
    color: #155724;
}

.error-info {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #dc3545;
    margin-top: 15px;
}

.error-info p {
    color: #721c24;
    margin: 0;
}

/* 新闻源管理面板样式 */
.sources-panel {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: none;
}

.sources-panel h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #17a2b8;
    padding-bottom: 10px;
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.source-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #17a2b8;
    transition: transform 0.3s ease;
}

.source-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.source-card.source-disabled {
    opacity: 0.6;
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
    border-left-color: #95a5a6;
}

.source-card.source-disabled:hover {
    opacity: 0.8;
}

.disabled-badge {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 8px;
}

.source-card h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.source-info {
    margin: 10px 0;
}

.source-info p {
    margin: 5px 0;
    color: #7f8c8d;
}

.source-info strong {
    color: #2c3e50;
}

.source-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin: 10px 0;
}

.keyword-tag {
    background: #3498db;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

/* 新闻列表样式 - 专业庄重风格 */
.news-container {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(52, 152, 219, 0.1);
    position: relative;
    overflow: hidden;
}

.news-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3498db, #2980b9, #1f5f8b);
    border-radius: 20px 20px 0 0;
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #ecf0f1;
}

.news-header h3 {
    color: #2c3e50;
    font-size: 1.5rem;
}

.news-count {
    background: #3498db;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.news-list {
    display: grid;
    gap: 15px;
}

.news-item {
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    border-left: 4px solid #3498db;
    position: relative;
    overflow: hidden;
}

.news-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #3498db, #2980b9);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-left-color: #2980b9;
}

.news-item:hover::before {
    background: linear-gradient(180deg, #2980b9, #1f5f8b);
    width: 6px;
}

.news-title {
    margin-bottom: 10px;
}

.news-title a {
    color: #2c3e50;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
}

.news-title a:hover {
    color: #3498db;
}

/* 英文翻译标题样式 */
.news-english-title {
    margin-top: 8px;
    padding: 8px 12px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 8px;
    border-left: 3px solid #17a2b8;
    position: relative;
}

.news-english-title a {
    color: #495057;
    text-decoration: none;
    font-size: 0.95rem;
    line-height: 1.4;
    font-style: italic;
}

.news-english-title a:hover {
    color: #17a2b8;
}

.translation-label {
    position: absolute;
    top: 4px;
    right: 8px;
    background: #17a2b8;
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.language-tag {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 10px;
    vertical-align: middle;
}

.language-zh {
    background: #3498db;
    color: white;
}

.language-en {
    background: #27ae60;
    color: white;
}

.language-es {
    background: #e67e22;
    color: white;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #bdc3c7;
    font-size: 0.75rem;
    margin-top: 8px;
    flex-wrap: wrap;
    gap: 6px;
}

.news-source {
    font-weight: 500;
    color: #95a5a6;
    font-size: 0.7rem;
}

.news-time {
    color: #bdc3c7;
    font-size: 0.7rem;
}

.news-timestamp {
    color: #bdc3c7;
    font-size: 0.65rem;
    background: rgba(189, 195, 199, 0.1);
    padding: 1px 4px;
    border-radius: 3px;
}

/* 加载动画 */
.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #3498db;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

/* 响应式设计 - 移动端优化 */
@media (max-width: 768px) {
    .container {
        padding: 8px;
    }
    
    .header {
        padding: 15px 12px;
        margin-bottom: 15px;
    }
    
    .header h1 {
        font-size: 1.6rem;
        margin-bottom: 6px;
    }
    
    .header p {
        font-size: 0.9rem;
    }
    
    /* 移动端筛选器优化 */
    .language-filter {
        padding: 6px;
        margin-bottom: 8px;
        background: rgba(255, 255, 255, 0.95);
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }
    
    .filter-row {
        flex-direction: column;
        gap: 6px;
        align-items: stretch;
        padding: 0 3px;
    }
    
    .filter-group {
        justify-content: center;
        flex-wrap: wrap;
        gap: 4px;
    }
    
    .search-group {
        margin-left: 0;
        justify-content: center;
        width: 100%;
        max-width: calc(100vw - 20px);
        overflow: hidden;
    }
    
    .search-box {
        max-width: 100%;
        padding: 2px;
        margin: 0 auto;
        position: relative;
        width: 100%;
    }
    
    #searchInput {
        padding: 5px 8px;
        font-size: 0.75rem;
        width: calc(100% - 65px);
        min-width: 140px;
        max-width: calc(100vw - 85px);
    }
    
    #searchBtn, #clearSearchBtn {
        width: 26px;
        height: 26px;
        margin-left: 3px;
        flex-shrink: 0;
        font-size: 0.65rem;
    }
    
    #clearSearchBtn {
        background: linear-gradient(135deg, #e74c3c, #c0392b) !important;
        color: white !important;
        border: 1px solid #c0392b !important;
    }
    
    #clearSearchBtn:hover {
        background: linear-gradient(135deg, #c0392b, #a93226) !important;
        transform: scale(1.05);
    }
    
    .control-buttons {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .sources-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .news-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 3px;
        font-size: 0.7rem;
    }
    
    .news-item {
        padding: 15px;
    }
    
    .news-title a {
        font-size: 1rem;
        line-height: 1.3;
    }
    
    .language-tag {
        font-size: 0.7rem;
        padding: 2px 6px;
        margin-left: 6px;
    }
    
    .news-timestamp {
        font-size: 0.6rem;
        padding: 1px 3px;
    }
    
    /* 移动端筛选器优化 */
    .language-filter {
        padding: 15px;
        gap: 10px;
    }
    
    .filter-group {
        gap: 6px;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 5px;
    }
    
    /* 超小屏幕优化 */
    @media (max-width: 480px) {
        .container {
            padding: 5px;
        }
        
        .header {
            padding: 15px;
            margin-bottom: 10px;
        }
        
        .header h1 {
            font-size: 1.5rem;
        }
        
        .header p {
            font-size: 0.8rem;
        }
        
        .language-filter {
            padding: 6px;
            margin-bottom: 8px;
        }
        
        .filter-row {
            padding: 0 3px;
            gap: 6px;
        }
        
        .search-box {
            max-width: calc(100vw - 10px);
            margin: 0 auto;
            padding: 2px;
        }
        
        #searchInput {
            min-width: 120px;
            font-size: 0.7rem;
            padding: 5px 6px;
            width: calc(100% - 60px);
            max-width: calc(100vw - 80px);
        }
        
        #searchBtn, #clearSearchBtn {
            width: 26px;
            height: 26px;
            font-size: 0.65rem;
            margin-left: 2px;
        }
        
        .filter-group {
            gap: 4px;
        }
        
        .filter-label {
            font-size: 0.7rem;
        }
        
        .language-filter button {
            padding: 4px 8px;
            font-size: 0.7rem;
        }
    }
    
    .filter-group::-webkit-scrollbar {
        height: 3px;
    }
    
    .filter-label {
        font-size: 0.8rem;
        margin-right: 6px;
        flex-shrink: 0;
    }
    
    .language-filter button {
        padding: 4px 8px;
        font-size: 0.7rem;
        flex-shrink: 0;
        min-width: auto;
    }
    
    .language-filter button i {
        font-size: 0.65rem;
        margin-right: 2px;
    }
    
    .filter-group button {
        padding: 4px 8px;
        font-size: 0.7rem;
        flex-shrink: 0;
        min-width: auto;
    }
    
    .filter-group button i {
        font-size: 0.65rem;
        margin-right: 2px;
    }
    
    /* 分页控件移动端优化 */
    .pagination {
        gap: 4px;
        padding: 15px 10px;
        flex-wrap: wrap;
    }
    
    .pagination button {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-width: 35px;
    }
    
    .page-info {
        padding: 8px 15px;
        font-size: 0.8rem;
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .container {
        padding: 5px;
    }
    
    .header {
        padding: 12px 8px;
    }
    
    .header h1 {
        font-size: 1.4rem;
    }
    
    .header p {
        font-size: 0.85rem;
    }
    
    .language-filter {
        padding: 10px;
    }
    
    .filter-group {
        gap: 4px;
    }
    
    .language-filter button {
        padding: 4px 8px;
        font-size: 0.7rem;
    }
    
    .news-container {
        padding: 15px;
    }
    
    .news-item {
        padding: 12px;
    }
    
    .news-title a {
        font-size: 0.95rem;
    }
    
    .language-filter {
        padding: 12px;
    }
    
    .filter-group {
        gap: 4px;
    }
    
    .language-filter button {
        padding: 4px 8px;
        font-size: 0.7rem;
    }
    
    .pagination button {
        padding: 6px 10px;
        font-size: 0.75rem;
        min-width: 30px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* 分页控件 - 专业风格 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 25px;
    padding: 18px;
    flex-wrap: wrap;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.pagination button {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 3px 12px rgba(52, 152, 219, 0.3);
    min-width: 40px;
}

.pagination button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(52, 152, 219, 0.4);
}

.pagination button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

.pagination .page-info {
    background: rgba(255, 255, 255, 0.9);
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 600;
    color: #333;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
    white-space: nowrap;
}

/* 页码按钮样式 */
.page-number {
    min-width: 40px;
    height: 40px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.page-number.active {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.page-number:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 省略号样式 */
.page-ellipsis {
    color: #7f8c8d;
    font-weight: bold;
    padding: 0 10px;
    display: flex;
    align-items: center;
}

/* 语言筛选器 - 专业风格 */
.language-filter {
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.filter-row {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.filter-group {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: nowrap;
}

.filter-label {
    font-weight: 600;
    color: #2c3e50;
    margin-right: 6px;
    font-size: 0.8rem;
    white-space: nowrap;
}

.search-group {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.language-filter button {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e9ecef;
    padding: 5px 10px;
    border-radius: 16px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    color: #333;
    font-size: 0.75rem;
    min-width: auto;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.language-filter button.active {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 3px 12px rgba(52, 152, 219, 0.3);
    transform: scale(1.05);
}

.language-filter button:hover {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.15);
    border-color: #3498db;
}

.language-filter button i {
    margin-right: 4px;
    font-size: 0.75rem;
}

/* 加载状态 */
.loading-more {
    text-align: center;
    padding: 20px;
    color: #666;
    font-style: italic;
}