/* 响应式设计 */

/* 大屏幕 (≥1200px) */
@media (min-width: 1200px) {
    .container {
        max-width: 1170px;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 970px;
    }
    
    .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .nav-menu {
        gap: 20px;
    }
    
    .banner-content h2 {
        font-size: 36px;
    }
    
    .banner-content p {
        font-size: 18px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-top {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 小屏幕 (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .container {
        max-width: 750px;
    }
    
    .header-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }
    
    .header-contact {
        justify-content: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--white-color);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .banner {
        height: 500px;
    }
    
    .banner-content {
        left: 5%;
        max-width: 90%;
    }
    
    .banner-content h2 {
        font-size: 28px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 超小屏幕 (<768px) */
@media (max-width: 767px) {
    .container {
        padding: 0 15px;
    }
    
    .header {
        padding: 15px 0;
    }
    
    .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .logo img {
        width: 60px;
        height: 60px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .header-contact {
        flex-direction: column;
        gap: 10px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--white-color);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .banner {
        height: 400px;
    }
    
    .banner-content {
        left: 5%;
        max-width: 90%;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .banner-content p {
        font-size: 14px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .page-banner {
        padding: 40px 0;
    }
    
    .page-banner h2 {
        font-size: 24px;
    }
    
    .page-banner p {
        font-size: 14px;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .section-header p {
        font-size: 14px;
    }
    
    .advantages {
        padding: 60px 0;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .advantage-item {
        padding: 30px 20px;
    }
    
    .product-preview {
        padding: 60px 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .cases {
        padding: 60px 0;
    }
    
    .case-filters {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .case-info {
        padding: 20px;
    }
    
    .case-info h3 {
        font-size: 18px;
    }
    
    .case-meta {
        flex-direction: column;
        gap: 5px;
    }
    
    .design-services {
        padding: 60px 0;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .service-content {
        padding: 25px;
    }
    
    .contact {
        padding: 60px 0;
    }
    
    .contact-content {
        gap: 30px;
    }
    
    .contact-info {
        padding: 30px 20px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 10px;
        font-size: 14px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-column h3 {
        font-size: 18px;
    }
    
    .footer-bottom {
        padding-top: 20px;
        font-size: 14px;
    }
    
    /* 产品详情模态框 */
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .product-detail {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 30px 20px;
    }
    
    .product-detail-info h3 {
        font-size: 20px;
    }
    
    .spec-item {
        flex-direction: column;
        gap: 5px;
    }
}

/* 竖屏手机 */
@media (max-width: 480px) {
    .banner {
        height: 350px;
    }
    
    .banner-content h2 {
        font-size: 20px;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .section-header h2 {
        font-size: 20px;
    }
    
    .advantage-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .advantage-item h3 {
        font-size: 18px;
    }
    
    .product-info h3 {
        font-size: 18px;
    }
    
    .case-info h3 {
        font-size: 16px;
    }
    
    .service-content h3 {
        font-size: 18px;
    }
    
    .contact-info h3 {
        font-size: 20px;
    }
    
    .contact-form h3 {
        font-size: 20px;
    }
}

/* 横屏手机 */
@media (min-width: 481px) and (max-width: 767px) {
    .banner {
        height: 400px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .btn,
    .mobile-menu-btn {
        display: none;
    }
    
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0;
    }
    
    .banner {
        height: 300px;
    }
    
    .advantages,
    .product-preview,
    .cases,
    .design-services,
    .contact {
        padding: 40px 0;
    }
    
    .advantages-grid,
    .products-grid,
    .case-grid,
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #333333;
        --dark-color: #000000;
        --light-color: #ffffff;
        --gray-color: #666666;
        --white-color: #ffffff;
    }
    
    .header,
    .advantages,
    .product-preview,
    .cases,
    .design-services,
    .contact {
        border: 1px solid #000000;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}