/* ================================
   TQSec 网络安全官网 - 响应式样式
================================ */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 44px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cve-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-decoration {
        display: none;
    }
}

/* 移动设备 (< 768px) */
@media (max-width: 768px) {
    /* 导航栏 */
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Hero区域 */
    .hero {
        padding: 80px var(--spacing-md);
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    /* 通用区域 */
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* 关于我们 */
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .value-card {
        padding: var(--spacing-lg);
    }
    
    /* 服务项目 */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
    
    /* CVE漏洞展示 */
    .cve-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group input,
    .filter-group select {
        min-width: auto;
        width: 100%;
    }
    
    .cve-stats {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }
    
    .stat-item {
        flex: 1;
        min-width: 80px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    /* 新闻动态 */
    .news-card {
        flex-direction: column;
    }
    
    .news-date {
        width: 100%;
        display: flex;
        gap: var(--spacing-sm);
        align-items: center;
        justify-content: flex-start;
    }
    
    .news-date .day {
        font-size: 20px;
    }
    
    /* 联系我们 */
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* 页脚 */
    .footer {
        padding: var(--spacing-xl) 0;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
}

/* 小型移动设备 (< 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .cve-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .cve-meta {
        flex-wrap: wrap;
    }
    
    .info-item {
        flex-direction: column;
        text-align: center;
    }
    
    .info-icon {
        margin: 0 auto;
    }
}

/* 大型屏幕 (> 1400px) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero-title {
        font-size: 64px;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .hero-decoration,
    .mobile-menu-btn,
    .footer,
    .modal-overlay {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 40px 0;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .service-card,
    .value-card,
    .news-card,
    .cve-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ================================
   模态框响应式样式
================================ */
@media (max-width: 768px) {
    .modal-container {
        width: 95%;
        max-height: 90vh;
        margin: var(--spacing-md);
    }
    
    .modal-content {
        padding: var(--spacing-lg);
    }
    
    .modal-header h2 {
        font-size: 22px;
    }
    
    .modal-stats {
        grid-template-columns: 1fr;
    }
    
    .modal-features {
        grid-template-columns: 1fr;
    }
    
    .modal-cve-meta {
        grid-template-columns: 1fr;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    .process-step {
        flex-direction: column;
        align-items: flex-start;
    }
}