/**
 * 码上出海网站主样式文件
 * 包含基础样式、布局、颜色、字体等
 */

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根元素设置 */
:root {
    --primary-color: #2c5aa0;
    --primary-dark: #1e3a8a;
    --secondary-color: #f59e0b;
    --secondary-dark: #d97706;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-color: #fff;
    --bg-light: #f8fafc;
    --bg-dark: #1f2937;
    --border-color: #e5e7eb;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.2);
    --radius: 8px;
    --radius-lg: 15px;
    --transition: all 0.3s ease;
}

/* 基础样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: var(--bg-color);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo a {
    text-decoration: none;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-en {
    font-size: 14px;
    color: var(--text-light);
    font-weight: normal;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* 语言切换器 */
.language-switcher {
    position: relative;
}

.language-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.language-btn:hover {
    border-color: var(--primary-color);
}

.arrow-down {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-color);
    transition: var(--transition);
}

.language-btn:hover .arrow-down {
    border-top-color: var(--primary-color);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    list-style: none;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.language-switcher:hover .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
}

.language-option:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.language-option.active {
    background: var(--primary-color);
    color: white;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 768px) {
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 6px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* 面包屑导航样式 */
.breadcrumbs {
    background: var(--bg-light);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.breadcrumb-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

.breadcrumb-item.active span {
    color: var(--text-color);
    font-weight: 500;
    font-size: 14px;
}

.breadcrumb-separator {
    color: var(--text-lighter);
    font-size: 12px;
    margin: 0 4px;
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    display: flex;
    gap: 40px;
    min-height: calc(100vh - 80px);
}

.content-left {
    flex: 1;
    padding: 40px 0;
}

.content-right {
    width: 400px;
    position: sticky;
    top: 100px;
    height: fit-content;
}

/* 横幅区域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 60px 0;
    margin-bottom: 60px;
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-section h1 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: bold;
    position: relative;
    z-index: 1;
}

.hero-section p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-button {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 18px;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.cta-button:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

/* 内容区块 */
.content-block {
    margin-bottom: 60px;
}

.content-block h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--primary-color);
    text-align: center;
    position: relative;
}

.content-block h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
}

.content-block h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-color);
    margin-top: 30px;
}

.content-block p {
    font-size: 16px;
    margin-bottom: 15px;
    line-height: 1.8;
    color: var(--text-light);
}

/* 优势展示 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(44, 90, 160, 0.1), transparent);
    transition: var(--transition);
}

.advantage-item:hover::before {
    left: 100%;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.advantage-item h4 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary-color);
    position: relative;
    z-index: 1;
}

.advantage-item p {
    position: relative;
    z-index: 1;
}

/* 右侧表单 */
.lead-form-container {
    background: var(--bg-dark);
    color: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.lead-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.lead-form-container h3 {
    font-size: 24px;
    margin-bottom: 20px;
    text-align: center;
    color: var(--secondary-color);
}

.lead-form-container p {
    text-align: center;
    margin-bottom: 25px;
    opacity: 0.9;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #fbbf24;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    background: #374151;
    color: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: #4b5563;
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #9ca3af;
}

.submit-btn {
    width: 100%;
    background: var(--secondary-color);
    color: white;
    padding: 15px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

/* 联系信息 */
.contact-info {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--radius-lg);
    margin-top: 30px;
    border: 1px solid var(--border-color);
}

.contact-info h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: white;
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.contact-item img {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    flex-shrink: 0;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.footer-section p {
    margin-bottom: 15px;
    opacity: 0.8;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.contact-list .contact-item {
    background: none;
    padding: 0;
    margin-bottom: 15px;
}

.contact-list .contact-item i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.service-list,
.quick-links {
    list-style: none;
}

.service-list li,
.quick-links li {
    margin-bottom: 10px;
}

.service-list a,
.quick-links a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

.service-list a:hover,
.quick-links a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.copyright {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: white;
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--primary-color);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 30px;
}

.wechat-info {
    text-align: center;
}

.qr-code {
    margin-bottom: 20px;
}

.qr-code img {
    max-width: 200px;
    border-radius: var(--radius);
}

.wechat-details p {
    margin-bottom: 10px;
}

.wechat-details .note {
    color: var(--text-light);
    font-size: 14px;
    margin-top: 15px;
}

/* 工具提示 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark);
    color: white;
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .content-right,
    .back-to-top,
    .modal {
        display: none !important;
    }
    
    .main-content {
        margin-top: 0;
        flex-direction: column;
    }
    
    .content-left {
        padding: 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .content-block {
        page-break-inside: avoid;
    }
}