/* 响应式设计 */

/* 平板端 (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-sidebar {
        width: 200px;
    }
    
    .admin-main {
        margin-left: 200px;
    }
}

/* 手机端 (< 768px) */
@media (max-width: 767px) {
    .container {
        padding: 0 15px;
    }
    
    .site-title {
        font-size: 22px;
    }
    
    .banner-placeholder {
        height: 250px;
    }
    
    .laptop-icon {
        font-size: 80px;
    }
    
    
    .banner-description {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 25px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solution-card {
        padding: 15px;
    }
    
    .solution-images {
        flex-direction: column;
    }
    
    .btn-contact {
        padding: 10px 24px;
        font-size: 14px;
    }
    
    .modal-content {
        margin: 10% auto;
        padding: 20px;
        width: 95%;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        width: 100%;
        margin-bottom: 20px;
        box-sizing: border-box;
    }
    
    .page-header h1 {
        width: 100%;
        font-size: 20px;
        margin: 0;
        box-sizing: border-box;
        word-wrap: break-word;
    }
    
    .page-header .btn-back {
        width: 100%;
        text-align: center;
        padding: 8px 12px;
        min-height: 36px;
        font-size: 13px;
        box-sizing: border-box;
    }
    
    .page-title {
        font-size: 22px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-detail {
        padding: 20px;
    }
    
    .product-title {
        font-size: 24px;
    }
    
    .contact-description img {
        max-width: 100%;
    }
    
    .contact-page {
        padding: 20px;
    }
    
    /* 后台管理响应式 */
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 280px;
        box-shadow: 2px 0 20px rgba(0,0,0,0.2);
    }
    
    .admin-sidebar.show {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
        padding: 15px;
        padding-bottom: 90px; /* 为底部导航留空间 */
        box-sizing: border-box;
        width: 100%;
        overflow-x: hidden;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .admin-mobile-nav {
        display: flex;
    }
    
    .admin-content {
        padding: 15px;
        width: 100%;
        box-sizing: border-box;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .admin-menu-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .admin-form {
        padding: 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        overflow-x: hidden;
    }
    
    .form-group {
        margin-bottom: 20px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .form-group input[type="text"],
    .form-group input[type="number"],
    .form-group input[type="file"],
    .form-group textarea,
    .form-group select {
        width: 100%;
        box-sizing: border-box;
        max-width: 100%;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 12px;
        margin-top: 25px;
        width: 100%;
        padding: 0;
    }
    
    .form-actions .btn {
        width: 100%;
        padding: 10px 16px;
        font-size: 14px;
        margin: 0;
        min-height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
        flex-shrink: 0;
        border-radius: 4px;
    }
    
    .form-actions .btn-primary {
        order: 1;
    }
    
    .form-actions .btn-secondary {
        order: 2;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .admin-table {
        font-size: 14px;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 8px;
    }
    
    .image-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .image-item {
        width: 100%;
        box-sizing: border-box;
        max-width: 100%;
    }
    
    .image-item img {
        max-width: 100%;
        height: auto;
        box-sizing: border-box;
    }
    
    .delete-checkbox {
        padding: 6px;
        font-size: 12px;
    }
    
    .delete-checkbox label {
        min-height: 32px;
        font-size: 13px;
    }
    
    .delete-checkbox input {
        width: 16px;
        height: 16px;
        margin-right: 6px;
    }
    
    .form-actions {
        gap: 8px;
        margin-top: 20px;
    }
    
    .form-actions .btn {
        width: 100%;
        padding: 10px 16px;
        font-size: 14px;
        margin: 0;
        min-height: 36px;
    }
    
    .current-image img {
        max-width: 100%;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .floating-contact-btn {
        right: 15px;
        bottom: 20px;
        padding: 12px 24px;
        font-size: 14px;
        border-radius: 50px;
    }
}

/* 小屏手机 (< 480px) */
@media (max-width: 479px) {
    .banner-placeholder {
        height: 200px;
    }
    
    .laptop-icon {
        font-size: 60px;
    }
    
    
    .section-title {
        font-size: 20px;
    }
    
    .solution-title {
        font-size: 16px;
    }
    
    .product-title {
        font-size: 20px;
    }
    
    .admin-table {
        font-size: 12px;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 6px;
    }
    
    .thumb-image {
        width: 40px;
        height: 40px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .btn-back,
    .btn-view-products,
    .btn-contact,
    .sidebar-menu a,
    .admin-mobile-nav a {
        min-height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .solution-card:hover,
    .product-card:hover,
    .menu-card:hover {
        transform: none;
    }
    
    .solution-card:active,
    .product-card:active,
    .menu-card:active {
        transform: scale(0.98);
    }
}