/* 移动端响应式布局 */

/* 通用媒体查询 - 平板设备 (768px 及以下) */
@media screen and (max-width: 768px) {
    .container {
        width: 100%;
        padding: 0;
    }
    
    /* 头部区域调整 */
    .header {
        flex-direction: column;
        padding: 10px;
    }
    
    .logo {
        margin-bottom: 10px;
        text-align: center;
    }
    
    .search-box {
        width: 100%;
        margin: 10px 0;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .contact-info {
        text-align: center;
        margin-top: 10px;
    }
    
    /* 导航菜单调整 */
    .main-nav .nav-row {
        flex-wrap: wrap;
    }
    
    .main-nav li {
        flex: 0 0 25%;
    }
    
    .main-nav a {
        padding: 10px 5px;
        font-size: 14px;
    }
    
    /* 内容区域调整 */
    .about-content {
        flex-direction: column;
    }
    
    .about-image, .about-text {
        flex: 0 0 100%;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-list {
        flex-direction: column;
    }
    
    .news-list ul {
        flex: 0 0 100%;
        margin-bottom: 15px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .full-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 底部区域调整 */
    .footer {
        flex-direction: column;
    }
    
    .footer-links {
        margin-top: 10px;
    }
    
    /* 联系我们页面调整 */
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info-box, .contact-form-box {
        flex: 0 0 100%;
    }
    
    /* 服务页面调整 */
    .service-contact-box {
        flex-direction: column;
    }
    
    .service-item {
        margin-bottom: 15px;
    }
}

/* 手机设备 (576px 及以下) */
@media screen and (max-width: 576px) {
    /* 顶部导航调整 */
    .top-bar {
        flex-direction: column;
        align-items: center;
        padding: 5px;
    }
    
    .welcome {
        margin-bottom: 5px;
    }
    
    /* 导航菜单进一步调整 */
    .main-nav li {
        flex: 0 0 50%;
    }
    
    /* 内容区域进一步调整 */
    .services-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .full-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    /* 文章页面调整 */
    .article-content h1 {
        font-size: 20px;
    }
    
    .article-content h2 {
        font-size: 16px;
    }
    
    .article-content p {
        font-size: 14px;
    }
    
    /* 页面标题调整 */
    .page-title h1 {
        font-size: 18px;
    }
}

/* 移动导航菜单 */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #2a58ad;
    cursor: pointer;
    padding: 5px;
}

@media screen and (max-width: 768px) {
    .mobile-nav-toggle {
        display: block;
        position: absolute;
        top: 15px;
        right: 15px;
    }
    
    .main-nav {
        position: relative;
    }
    
    .nav-container {
        display: none;
    }
    
    .nav-container.active {
        display: block;
    }
    
    .main-nav .nav-row {
        flex-direction: column;
    }
    
    .main-nav li {
        flex: 0 0 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .main-nav a {
        padding: 12px 15px;
        text-align: left;
    }
}

/* 文章页面响应式调整 */
@media screen and (max-width: 768px) {
    .article-content {
        padding: 15px;
    }
    
    .article-image {
        margin: 15px 0;
    }
    
    .related-articles ul {
        padding-left: 10px;
    }
}

/* 固定导航栏样式 */
.nav-fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: top 0.3s ease-in-out;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* 触摸设备样式 */
.touch-device .main-nav li.has-children > a {
    position: relative;
}

.touch-device .main-nav li.has-children > a:after {
    content: '\f107';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-left: 5px;
}

.touch-device .main-nav li.has-children.touch-active > a:after {
    content: '\f106';
}

.touch-device .main-nav li.has-children .sub-menu {
    display: none;
}

.touch-device .main-nav li.has-children.touch-active .sub-menu {
    display: block;
}

/* 响应式表格 */
@media screen and (max-width: 768px) {
    table {
        width: 100%;
        display: block;
        overflow-x: auto;
    }
    
    table th, table td {
        min-width: 100px;
    }
}

/* 图片响应式处理 */
img {
    max-width: 100%;
    height: auto;
}

/* 表单响应式处理 */
@media screen and (max-width: 576px) {
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    textarea,
    select {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    button, .submit-btn {
        width: 100%;
    }
}

/* 弹出菜单动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.nav-container.active {
    animation: fadeIn 0.3s ease-in-out;
}

/* 移动端底部导航 */
.mobile-footer-nav {
    display: none;
}

/* 移动端悬浮联系模块 */
.mobile-contact-float {
    display: none; /* 默认隐藏 */
    position: fixed;
    bottom: 70px;
    left: 0;
    width: 100%;
    z-index: 998;
    padding: 0 15px;
    animation: bounceIn 0.5s;
}

@media screen and (max-width: 576px) {
    .mobile-contact-float {
        display: flex; /* 在移动设备上显示 */
    }
}

.mobile-contact-float a {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px 0;
    margin: 0 5px;
    border-radius: 30px;
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.mobile-contact-float a:hover, 
.mobile-contact-float a:active {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.35);
}

.mobile-contact-float .call-btn {
    background-color: #2a58ad;
    background-image: linear-gradient(to right, #2a58ad, #3a68bd);
}

.mobile-contact-float .sms-btn {
    background-color: #4caf50;
    background-image: linear-gradient(to right, #4caf50, #5cb85c);
}

.mobile-contact-float i {
    margin-right: 8px;
    font-size: 20px;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@media screen and (max-width: 576px) {
    .mobile-footer-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }
    
    .mobile-footer-nav a {
        flex: 1;
        text-align: center;
        padding: 10px 0;
        font-size: 12px;
        color: #666;
        text-decoration: none;
    }
    
    .mobile-footer-nav i {
        display: block;
        font-size: 18px;
        margin-bottom: 3px;
    }
    
    .mobile-footer-nav a.active {
        color: #2a58ad;
    }
    
    /* 为底部导航腾出空间 */
    body {
        padding-bottom: 60px;
    }
}