:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --success-color: #27ae60;
    --text-color: #333;
    --border-color: #ddd;
}
a{
    color: #0b57d0;
    text-decoration: none;
}
a:hover{
    text-decoration: none;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8f9fa;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
    color: white;
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

.data-info {
    font-size: 0.85rem;
    padding: 8px 12px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
}

.data-info i {
    margin-right: 5px;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.sidebar {
    background: white;
    border-radius: 10px;
    padding: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    height: fit-content;
    position: sticky;
    top: 7rem;
}

.content-area {
    background: white;
    border-radius: 10px;
    padding: 1.8rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.section-title {
    color: var(--primary-color);
    margin-bottom: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-color);
    font-size: 1.3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.refresh-btn {
    background: var(--light-color);
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s;
}

.refresh-btn:hover {
    background: var(--secondary-color);
    color: white;
}

.refresh-btn i {
    margin-right: 5px;
}

/* Meeting Archive Styles */
.filter-options {
    display: flex;
    gap: 0.8rem;
    margin-bottom: 0rem;
    flex-wrap: wrap;
}

.filter-options select, .filter-options input {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    min-width: 200px;
}

.archive-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.8rem;
    font-size: 0.9rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.archive-table th, .archive-table td {
    padding: 0.9rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.archive-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

.archive-table tr:last-child td {
    border-bottom: none;
}
.archive-table td:nth-child(1) {
    width: 1rem; /* 第二列宽度 */
}
.archive-table td:nth-child(2) {
    width: 13rem; /* 第二列宽度 */
}
.archive-table td:nth-child(3) {
    width: 35rem; /* 第二列宽度 */
}
.archive-table tr:hover {
    background-color: #f5f9ff;
}

footer {
    text-align: center;
    padding: 1.5rem 0;
    color: var(--dark-color);
    font-size: 0.85rem;
    position: relative;
    border-top: 1px solid var(--border-color);
    margin-top: 1.5rem;
}

.view-display-btn {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.2rem 0.6rem;
    background: linear-gradient(to right, var(--primary-color), var(--dark-color));
    color: white;
    border: none;
    border-radius: 30px;
    text-decoration: none;
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 3px 8px rgba(0,0,0,0.15);
}

.view-display-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.loading-indicator {
    text-align: center;
    padding: 2rem;
    color: var(--dark-color);
    font-size: 0.9rem;
    border-radius: 8px;
    background: #f9f9ff;
    margin: 1rem 0;
}

.loading-indicator i {
    display: block;
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    animation: spin 1.5s linear infinite;
}

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

.error-message {
    background: #fff8f8;
    border: 1px solid #ffcccc;
    border-radius: 8px;
    padding: 1.2rem;
    margin: 1rem 0;
    color: #e74c3c;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tutorial-section {
    background: linear-gradient(to right, #f9f9ff, #f0f5ff);
    border-radius: 10px;
    padding: 1.2rem;
    margin-top: 1.5rem;
    border-left: 4px solid var(--secondary-color);
}

.tutorial-section h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-section ul {
    padding-left: 1.5rem;
    font-size: 0.9rem;
    color: #555;
}

.tutorial-section li {
    margin-bottom: 0.5rem;
    position: relative;
}

.tutorial-section li:before {
    content: "•";
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    left: -1.2rem;
}

.material-links {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.material-link {
    padding: 4px 4px 4px 14px;
    background: var(--light-color);
    border-radius: 20px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    color: var(--dark-color);
    transition: all 0.2s;
}

.material-link:hover {
    background: var(--secondary-color);
    color: white;
}

.about-subtitle {
    color: var(--primary-color);
    margin: 1.2rem 0 0.5rem;
    font-size: 1.1rem;
}

.about-content p {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    color: #444;
}

.research-areas {
    font-size: 0.9rem;
    padding-left: 1.5rem;
    margin-bottom: 1.2rem;
}

.research-areas li {
    margin-bottom: 0.5rem;
    position: relative;
}

.research-areas li:before {
    content: "•";
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    left: -1.2rem;
}

.stats-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stat-card {
    flex: 1;
    min-width: 180px;
    background: linear-gradient(to right, #f9f9ff, #f0f5ff);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.next-meeting-card {
    flex: 1;
    min-width: 180px;
    background: linear-gradient(to right, #f9f9ff, #f0f5ff);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    margin-bottom: 1.5rem
}

.next-meeting-card p{
    margin-bottom: .5rem
}

.stat-number {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--dark-color);
}

.next-meeting-container {
    width: 100%;
    height: 250px;
    background: linear-gradient(to right, #f9f9ff, #f0f5ff);
    border-radius: 10px;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    display: flex;
    justify-content: center;
    align-items: center;
}


@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .filter-options {
        flex-direction: column;
    }
    
    .data-info {
        margin-top: 0.8rem;
    }
    
    .filter-options select, .filter-options input {
        min-width: 100%;
    }
    
    .stats-container {
        flex-direction: column;
    }
    
    .sidebar {
        position: relative;
        top: 0;
    }
}

/* 添加分页控件样式 */
.pagination-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding: 10px 0;
    border-top: 1px solid #eee;
}

.pagination-buttons {
    display: flex;
    gap: 10px;
}

.pagination-btn {
    padding: 6px 12px;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.pagination-btn:hover {
    background-color: #e9e9e9;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-size: 14px;
    color: #666;
}

.items-per-page {
    display: flex;
    align-items: center;
    gap: 8px;
}

.items-per-page select {
    padding: 6px;
    border: 1px solid #ddd;
    border-radius: 4px;
}


/* 添加警告消息样式 */
.warning-message {
    padding: 15px;
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 4px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    color: #856404;
}

.warning-message i {
    margin-right: 10px;
    font-size: 1.2em;
}

/* 更新错误消息样式 */
.error-message {
    padding: 15px;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin: 10px 0;
    display: flex;
    align-items: center;
}

.error-message i {
    margin-right: 10px;
    font-size: 1.2em;
}
/* 刷新按钮样式 */
.refresh-button {
    background-color: #ecf0f1;
    color: #34495e;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    display: flex;
    align-items: center;
    margin-left: 10px;
}

.refresh-button:hover {
    background-color: #2c3e50;
    color: white;
    transform: translateY(-2px);
}

.refresh-button i {
    margin-right: 0;
}