<?php
session_start();

$lang = $_SESSION['lang'] ?? 'zh';
if (isset($_GET['lang'])) {
    $lang = $_GET['lang'] === 'en' ? 'en' : 'zh';
    $_SESSION['lang'] = $lang;
}

$translations = [
    'zh' => [
        'home' => '首页',
        'market' => '行情',
        'second_contract' => '秒合约',
        'spot' => '现货交易',
        'contract' => '合约交易',
        'mining' => '挖矿',
        'swap' => '闪兑',
        'personal' => '个人中心',
        'login' => '登入',
        'register' => '注册',
        'logout' => '退出',
        'language' => '语言选择',
        'footer_about' => '关于',
        'footer_product' => '产品',
        'footer_support' => '支持',
        'about_us' => '关于我们',
        'news' => '新闻中心',
        'terms' => '服务条款',
        'help' => '帮助中心',
        'privacy' => '法律与隐私',
        'submit_request' => '提交请求',
        'api_doc' => 'API文档',
        'fee_structure' => '费率标准',
        'app_download' => 'APP下载',
        'system_status' => '系统状态',
        'normal' => '正常',
        'cookie_policy' => 'Cookie 政策',
        'platform_advantage' => '为什么选择 Byro',
        'partners' => '合作伙伴',
        'deposit' => '充值',
        'withdraw' => '提现',
        'assets' => '资产',
        'email_verify' => '邮箱验证码',
        'password' => '密码',
        'confirm_password' => '确认密码',
        'agree_terms' => '我已阅读并同意服务条款和隐私政策',
        'send_code' => '发送验证码',
        'view_more' => '查看更多',
        'hero_title' => '全球领先的数字资产交易平台',
        'hero_subtitle' => '在 Byro 开启您的加密货币之旅，安全、稳定、可靠。',
        'get_started' => '立即开始',
        'popular_markets' => '热门市场',
        'coin' => '币种',
        'last_price' => '最新价',
        'change_24h' => '24h 涨跌',
        'trade' => '交易',
        'why_choose_us' => '为什么选择我们',
        'security_title' => '顶尖风控',
        'security_desc' => '多重签名冷钱包存储，确保资产绝对安全。',
        'liquidity_title' => '极速成交',
        'liquidity_desc' => '毫秒级撮合系统，高达 10w TPS 处理能力。',
        'support_title' => '24/7 全球支持',
        'support_desc' => '专业团队即时响应，为您解决任何交易问题。',
        'diversity_title' => '丰富产品线',
        'diversity_desc' => '涵盖现货、合约、杠杆等多元化金融产品。',
        'copyright' => '© 2023-2026 Byro. 版权所有。',
        'status_normal' => '系统状态：正常',
        'advantage_1_title' => '安全合规',
        'advantage_1_desc' => '全球合规运营，采用冷热钱包分离技术，确保您的资产安全。',
        'advantage_2_title' => '流动性强',
        'advantage_2_desc' => '毫秒级撮合引擎，深度流动性，为您提供极致的交易体验。',
        'advantage_3_title' => '7/24 支持',
        'advantage_3_desc' => '全天候多语言在线客服，随时解答您的任何疑问。',
        'advantage_4_title' => '多样化产品',
        'advantage_4_desc' => '涵盖现货、合约、秒合约、挖矿等多种投资工具。',
        'about_content' => 'Byro 是一家全球领先的数字货币交易平台，成立于 2023 年，致力于为全球用户提供安全、专业、透明的数字资产金融服务。我们拥有顶尖的技术团队和风控体系，为超过 100 个国家和地区的数百万用户提供服务。',
        'news_content' => 'Byro 每日更新全球加密市场动态，包括最新的上币信息、行业动态、深度分析报告，助您掌握财富密码。',
        'fees_content' => 'Byro 致力于提供行业极具竞争力的费率标准。现货交易手续费低至 0.1%，根据您的交易量等级，还可以享受更大幅度的费率折扣。',
        'app_desc' => '随时随地，尽在掌握。下载 Byro 移动端，体验专业级交易。',
    ],
    'en' => [
        'home' => 'Home',
        'market' => 'Market',
        'second_contract' => 'Binary',
        'spot' => 'Spot',
        'contract' => 'Contract',
        'mining' => 'Mining',
        'swap' => 'Swap',
        'personal' => 'Account',
        'login' => 'Login',
        'register' => 'Register',
        'logout' => 'Logout',
        'language' => 'Language',
        'footer_about' => 'About',
        'footer_product' => 'Products',
        'footer_support' => 'Support',
        'about_us' => 'About Us',
        'news' => 'News',
        'terms' => 'Terms of Service',
        'help' => 'Help Center',
        'privacy' => 'Privacy Policy',
        'submit_request' => 'Submit Request',
        'api_doc' => 'API Docs',
        'fee_structure' => 'Fees',
        'app_download' => 'Download App',
        'system_status' => 'System Status',
        'normal' => 'Normal',
        'cookie_policy' => 'Cookie Policy',
        'platform_advantage' => 'Why Choose Byro',
        'partners' => 'Partners',
        'deposit' => 'Deposit',
        'withdraw' => 'Withdraw',
        'assets' => 'Assets',
        'email_verify' => 'Email Code',
        'password' => 'Password',
        'confirm_password' => 'Confirm Password',
        'agree_terms' => 'I have read and agree to the Terms of Service and Privacy Policy',
        'send_code' => 'Send Code',
        'view_more' => 'View More',
        'hero_title' => 'The World\'s Leading Digital Asset Exchange',
        'hero_subtitle' => 'Start your cryptocurrency journey on Byro, secure, stable, and reliable.',
        'get_started' => 'Get Started',
        'popular_markets' => 'Popular Markets',
        'coin' => 'Coin',
        'last_price' => 'Last Price',
        'change_24h' => '24h Change',
        'trade' => 'Trade',
        'why_choose_us' => 'Why Choose Us',
        'security_title' => 'Advanced Security',
        'security_desc' => 'Multi-sig cold storage for ultimate asset safety.',
        'liquidity_title' => 'High Performance',
        'liquidity_desc' => 'Millisecond matching with up to 100k TPS.',
        'support_title' => '24/7 Global Support',
        'support_desc' => 'Professional response for any trading issues.',
        'diversity_title' => 'Diverse Products',
        'diversity_desc' => 'Spot, Futures, and more financial instruments.',
        'copyright' => '© 2023-2026 Byro. All rights reserved.',
        'status_normal' => 'System Status: Normal',
        'advantage_1_title' => 'Security & Compliance',
        'advantage_1_desc' => 'Global compliant operations with cold/hot wallet isolation to ensure asset security.',
        'advantage_2_title' => 'Strong Liquidity',
        'advantage_2_desc' => 'Millisecond matching engine with deep liquidity for an ultimate trading experience.',
        'advantage_3_title' => '7/24 Support',
        'advantage_3_desc' => 'All-day multi-language online customer service to answer your questions anytime.',
        'advantage_4_title' => 'Diverse Products',
        'advantage_4_desc' => 'Covering spot, contract, binary, mining and various investment tools.',
        'about_content' => 'Byro is a world-leading digital currency exchange established in 2023, committed to providing secure, professional, and transparent digital asset financial services to users globally. We have a top-tier technical team and risk control system, serving millions of users across more than 100 countries and regions.',
        'news_content' => 'Byro updates daily global crypto market dynamics, including the latest listing info, industry trends, and in-depth analysis reports to help you master wealth opportunities.',
        'fees_content' => 'Byro is committed to providing industry-competitive fee standards. Spot trading fees as low as 0.1%, with deeper discounts based on your trading volume tier.',
        'app_desc' => 'Anytime, anywhere, at your fingertips. Download Byro mobile app for professional trading experience.',
    ]
];

function __($key) {
    global $translations, $lang;
    return $translations[$lang][$key] ?? $key;
}