/* 响应式设计增强 */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 30px;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 10px;
    }
    
    h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .authors {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .author {
        margin: 0;
    }
    
    .affiliations {
        font-size: 0.8rem;
        line-height: 1.4;
    }
    
    .highlights {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 1.5rem;
    }
    
    .section h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .bibtex {
        font-size: 0.7rem;
        padding: 1rem;
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
    }
    
    header {
        background: white;
        box-shadow: none;
    }
    
    .btn {
        display: none;
    }
    
    .video-placeholder {
        display: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    }
    
    header {
        background: rgba(26, 32, 44, 0.95);
    }
    
    main {
        background: #1a202c;
        color: #e2e8f0;
    }
    
    .section {
        border-bottom-color: #2d3748;
    }
    
    .abstract {
        color: #cbd5e0;
    }
    
    .highlight-card {
        background: #2d3748;
        color: #e2e8f0;
    }
    
    .result-item {
        background: #2d3748;
        color: #e2e8f0;
    }
    
    .bibtex {
        background: #2d3748;
        border-color: #4a5568;
        color: #e2e8f0;
    }
}