<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录 - 人民社业务管理系统</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary-color: #1e88e5;
            --primary-dark: #0d47a1;
            --primary-light: #64b5f6;
            --secondary-color: #f5f5f5;
            --accent-color: #ff9800;
            --text-color: #333;
            --text-light: #666;
            --text-lighter: #999;
            --border-color: #e0e0e0;
            --success-color: #4CAF50;
            --warning-color: #ff9800;
            --danger-color: #f44336;
            --shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        body {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: var(--text-color);
            font-size: 14px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        /* 登录容器 */
        .login-container {
            width: 100%;
            max-width: 440px;
        }
        
        /* 登录卡片 */
        .login-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }
        
        .login-header {
            padding: 40px 40px 20px;
            text-align: center;
            background: linear-gradient(to right, #1e88e5, #0d47a1);
            color: white;
        }
        
        .logo {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .logo-icon {
            font-size: 48px;
            color: #ffd54f;
        }
        
        .logo-text {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.2;
        }
        
        .logo-subtitle {
            font-size: 16px;
            opacity: 0.9;
            font-weight: normal;
            margin-top: 5px;
        }
        
        .login-title {
            font-size: 20px;
            font-weight: 600;
            margin-top: 10px;
        }
        
        .login-body {
            padding: 40px;
        }
        
        /* 表单样式 */
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--text-color);
        }
        
        .form-label.required:after {
            content: "*";
            color: var(--danger-color);
            margin-left: 4px;
        }
        
        .input-group {
            position: relative;
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-lighter);
            font-size: 16px;
        }
        
        .form-control {
            width: 100%;
            padding: 14px 15px 14px 45px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 15px;
            transition: var(--transition);
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.2);
        }
        
        .form-hint {
            font-size: 12px;
            color: var(--text-lighter);
            margin-top: 5px;
        }
        
        .form-error {
            font-size: 12px;
            color: var(--danger-color);
            margin-top: 5px;
            display: none;
        }
        
        /* 选项 */
        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
        }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .checkbox-input {
            width: 16px;
            height: 16px;
            cursor: pointer;
        }
        
        .checkbox-label {
            font-size: 14px;
            color: var(--text-color);
            cursor: pointer;
        }
        
        .forgot-password {
            color: var(--primary-color);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }
        
        .forgot-password:hover {
            text-decoration: underline;
        }
        
        /* 按钮 */
        .btn {
            width: 100%;
            padding: 14px 20px;
            border-radius: 6px;
            border: none;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            transition: var(--transition);
        }
        
        .btn-primary {
            background: var(--primary-color);
            color: white;
        }
        
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
        }
        
        .btn:disabled {
            background: #cccccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        /* 底部链接 */
        .login-footer {
            padding: 30px 40px 40px;
            text-align: center;
            border-top: 1px solid var(--border-color);
            background: #f9f9f9;
        }
        
        .login-footer p {
            color: var(--text-light);
            margin-bottom: 10px;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 15px;
        }
        
        .footer-link {
            color: var(--primary-color);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }
        
        .footer-link:hover {
            text-decoration: underline;
        }
        
        /* 消息提示 */
        .message {
            padding: 12px 15px;
            border-radius: 6px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            display: none;
        }
        
        .message-error {
            background: #ffebee;
            color: var(--danger-color);
            border: 1px solid #ffcdd2;
        }
        
        .message-success {
            background: #e8f5e9;
            color: var(--success-color);
            border: 1px solid #c8e6c9;
        }
        
        .message-icon {
            font-size: 18px;
        }
        
        /* 语言选择 */
        .language-selector {
            position: absolute;
            top: 20px;
            right: 20px;
        }
        
        .language-btn {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 15px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        
        .language-btn:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        
        /* 响应式设计 */
        @media (max-width: 576px) {
            .login-header, .login-body, .login-footer {
                padding: 30px 25px;
            }
            
            .logo-text {
                font-size: 24px;
            }
            
            .logo-subtitle {
                font-size: 14px;
            }
            
            .form-options {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            
            .language-selector {
                position: relative;
                top: auto;
                right: auto;
                margin-bottom: 20px;
                display: flex;
                justify-content: center;
            }
        }
        
        /* 加载动画 */
        .loader {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s ease-in-out infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* 密码可见性切换 */
        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-lighter);
            cursor: pointer;
            padding: 5px;
        }
        
        .password-toggle:hover {
            color: var(--primary-color);
        }
    </style>
</head>
<body>
    <!-- 语言选择器 -->
    <div class="language-selector">
        <button class="language-btn">
            <i class="fas fa-globe"></i>
            <span>简体中文</span>
            <i class="fas fa-chevron-down"></i>
        </button>
    </div>
    
    <!-- 登录容器 -->
    <div class="login-container">
        <!-- 登录卡片 -->
        <div class="login-card">
            <!-- 头部 -->
            <div class="login-header">
                <div class="logo">
                    <div class="logo-icon">
                        <i class="fas fa-language"></i>
                    </div>
                    <div>
                        <div class="logo-text">人民社业务管理系统</div>
                        <div class="logo-subtitle"></div>
                    </div>
                </div>
                <div class="login-title">欢迎登录</div>
            </div>
            
            <!-- 消息提示 -->
            <div class="message message-error" id="errorMessage">
                <i class="fas fa-exclamation-circle message-icon"></i>
                <span id="errorText">用户名或密码错误，请重试</span>
            </div>
            
            <div class="message message-success" id="successMessage">
                <i class="fas fa-check-circle message-icon"></i>
                <span id="successText">登录成功！正在跳转...</span>
            </div>
            
            <!-- 登录表单 -->
            <div class="login-body">
                <form id="loginForm">
                    <div class="form-group">
                        <label for="username" class="form-label required">用户名/邮箱</label>
                        <div class="input-group">
                            <i class="fas fa-user input-icon"></i>
                            <input type="text" id="username" class="form-control" placeholder="请输入用户名或邮箱" required>
                        </div>
                        <div class="form-error" id="usernameError">请输入有效的用户名或邮箱</div>
                    </div>
                    
                    <div class="form-group">
                        <label for="password" class="form-label required">密码</label>
                        <div class="input-group">
                            <i class="fas fa-lock input-icon"></i>
                            <input type="password" id="password" class="form-control" placeholder="请输入密码" required>
                            <button type="button" class="password-toggle" id="togglePassword">
                                <i class="fas fa-eye"></i>
                            </button>
                        </div>
                        <div class="form-error" id="passwordError">密码长度至少6位</div>
                    </div>
                    
                    <div class="form-options">
                        <div class="checkbox-group">
                            <input type="checkbox" id="rememberMe" class="checkbox-input">
                            <label for="rememberMe" class="checkbox-label">记住我</label>
                        </div>
                        <a href="#" class="forgot-password" id="forgotPassword">忘记密码？</a>
                    </div>
                    
                    <button type="submit" class="btn btn-primary" id="loginBtn">
                        <span id="btnText">登录</span>
                        <div class="loader" id="loginLoader" style="display: none;"></div>
                    </button>
                </form>
            </div>
            
            <!-- 底部 -->
            <div class="login-footer">
                <p>还没有账户？</p>
                <a href="#" class="footer-link" id="registerLink">立即注册</a>
                <div class="footer-links">
                    <a href="#" class="footer-link">使用帮助</a>
                    <a href="#" class="footer-link">隐私政策</a>
                    <a href="#" class="footer-link">联系我们</a>
                </div>
            </div>
  		<div class="login-footer">
                <p>广东人民出版社有限公司 版权所有 <a href="https://beian.miit.gov.cn/" class="footer-link" id="registerLink">粤ICP备15104677号</a></p>
                
            </div>
        </div>
    </div>

    <script>
        // 页面加载完成后的初始化
        document.addEventListener('DOMContentLoaded', function() {
            // 页面加载动画
            document.body.style.opacity = 0;
            document.body.style.transition = 'opacity 0.5s ease';
            
            setTimeout(function() {
                document.body.style.opacity = 1;
            }, 100);
            
            // 获取DOM元素
            const loginForm = document.getElementById('loginForm');
            const usernameInput = document.getElementById('username');
            const passwordInput = document.getElementById('password');
            const togglePasswordBtn = document.getElementById('togglePassword');
            const loginBtn = document.getElementById('loginBtn');
            const loginLoader = document.getElementById('loginLoader');
            const btnText = document.getElementById('btnText');
            const errorMessage = document.getElementById('errorMessage');
            const successMessage = document.getElementById('successMessage');
            const usernameError = document.getElementById('usernameError');
            const passwordError = document.getElementById('passwordError');
            const rememberMeCheckbox = document.getElementById('rememberMe');
            const forgotPasswordLink = document.getElementById('forgotPassword');
            const registerLink = document.getElementById('registerLink');
            
            // 从本地存储获取保存的用户名
            const savedUsername = localStorage.getItem('savedUsername');
            if (savedUsername) {
                usernameInput.value = savedUsername;
                rememberMeCheckbox.checked = true;
            }
            
            // 密码可见性切换
            let isPasswordVisible = false;
            togglePasswordBtn.addEventListener('click', function() {
                isPasswordVisible = !isPasswordVisible;
                if (isPasswordVisible) {
                    passwordInput.type = 'text';
                    this.innerHTML = '<i class="fas fa-eye-slash"></i>';
                } else {
                    passwordInput.type = 'password';
                    this.innerHTML = '<i class="fas fa-eye"></i>';
                }
            });
            
            // 表单验证
            function validateForm() {
                let isValid = true;
                
                // 重置错误状态
                usernameError.style.display = 'none';
                passwordError.style.display = 'none';
                errorMessage.style.display = 'none';
                
                // 验证用户名
                const username = usernameInput.value.trim();
                if (!username) {
                    usernameError.textContent = '请输入用户名或邮箱';
                    usernameError.style.display = 'block';
                    isValid = false;
                } else if (username.length < 3) {
                    usernameError.textContent = '用户名至少3个字符';
                    usernameError.style.display = 'block';
                    isValid = false;
                }
                
                // 验证密码
                const password = passwordInput.value.trim();
                if (!password) {
                    passwordError.textContent = '请输入密码';
                    passwordError.style.display = 'block';
                    isValid = false;
                } else if (password.length < 6) {
                    passwordError.textContent = '密码长度至少6位';
                    passwordError.style.display = 'block';
                    isValid = false;
                }
                
                return isValid;
            }
            
            // 模拟登录
            function simulateLogin(username, password, rememberMe) {
                // 模拟API调用延迟
                return new Promise((resolve, reject) => {
                    setTimeout(() => {
                        // 模拟成功登录条件
                        const testAccounts = [
                            { username: 'admin', password: 'admin123' },
                            { username: 'user', password: 'user123' },
                            { username: 'test@example.com', password: 'test123' }
                        ];
                        
                        const isValid = testAccounts.some(account => 
                            (account.username === username || account.username === username) && 
                            account.password === password
                        );
                        
                        if (isValid) {
                            resolve({ success: true, username: username });
                        } else {
                            reject({ success: false, message: '用户名或密码错误' });
                        }
                    }, 1500);
                });
            }
            
            // 表单提交事件
            loginForm.addEventListener('submit', async function(e) {
                e.preventDefault();
                
                // 验证表单
                if (!validateForm()) {
                    return;
                }
                
                // 获取表单数据
                const username = usernameInput.value.trim();
                const password = passwordInput.value.trim();
                const rememberMe = rememberMeCheckbox.checked;
                
                // 显示加载状态
                loginBtn.disabled = true;
                btnText.textContent = '登录中...';
                loginLoader.style.display = 'block';
                errorMessage.style.display = 'none';
                
                try {
                    // 模拟登录
                    const result = await simulateLogin(username, password, rememberMe);
                    
                    if (result.success) {
                        // 登录成功
                        successMessage.style.display = 'flex';
                        
                        // 如果选择了"记住我"，保存用户名
                        if (rememberMe) {
                            localStorage.setItem('savedUsername', username);
                        } else {
                            localStorage.removeItem('savedUsername');
                        }
                        
                        // 模拟跳转到后台管理系统
                        setTimeout(() => {
                            alert(`登录成功！欢迎 ${username} 进入系统。\n\n在实际应用中，这里会跳转到后台管理主页。`);
                            // 在实际应用中，这里应该跳转到后台管理页面
                            // window.location.href = 'admin_dashboard.html';
                        }, 1000);
                    }
                } catch (error) {
                    // 登录失败
                    loginBtn.disabled = false;
                    btnText.textContent = '登录';
                    loginLoader.style.display = 'none';
                    
                    errorMessage.style.display = 'flex';
                    document.getElementById('errorText').textContent = error.message || '登录失败，请检查用户名和密码';
                    
                    // 添加抖动效果
                    loginForm.classList.add('shake');
                    setTimeout(() => {
                        loginForm.classList.remove('shake');
                    }, 500);
                }
            });
            
            // 添加抖动动画
            const style = document.createElement('style');
            style.textContent = `
                .shake {
                    animation: shake 0.5s;
                }
                
                @keyframes shake {
                    0%, 100% { transform: translateX(0); }
                    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
                    20%, 40%, 60%, 80% { transform: translateX(5px); }
                }
            `;
            document.head.appendChild(style);
            
            // 忘记密码链接
            forgotPasswordLink.addEventListener('click', function(e) {
                e.preventDefault();
                alert('忘记密码功能：\n\n请通过系统管理员或联系技术支持重置密码。\n\n邮箱：support@dialect-research.com\n电话：+86 10 1234 5678');
            });
            
            // 注册链接
            registerLink.addEventListener('click', function(e) {
                e.preventDefault();
                alert('注册功能：\n\n用户注册功能暂未开放，请联系系统管理员申请账户。\n\n邮箱：admin@dialect-research.com');
            });
            
            // 输入框实时验证
            usernameInput.addEventListener('input', function() {
                if (this.value.trim().length > 0) {
                    usernameError.style.display = 'none';
                }
            });
            
            passwordInput.addEventListener('input', function() {
                if (this.value.trim().length >= 6) {
                    passwordError.style.display = 'none';
                }
            });
            
            // 回车键提交表单
            document.addEventListener('keydown', function(e) {
                if (e.key === 'Enter' && !loginBtn.disabled) {
                    loginForm.dispatchEvent(new Event('submit'));
                }
            });
            
            // 语言选择器
            const languageBtn = document.querySelector('.language-btn');
            languageBtn.addEventListener('click', function() {
                alert('语言切换功能：\n\n当前仅支持简体中文，多语言功能正在开发中。');
            });
            
            // 自动聚焦用户名输入框
            usernameInput.focus();
            
            // 演示账户提示
            console.log('演示账户：\n1. 用户名: admin, 密码: admin123\n2. 用户名: user, 密码: user123\n3. 用户名: test@example.com, 密码: test123');
        });
    </script>
</body>
</html>