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cjian2025
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<!DOCTYPE html>
<html lang="zh-Hant">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>精緻化系統登入</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;700&family=Poppins:wght@400;700&display=swap" rel="stylesheet">
    <style>
        body {
            font-family: 'Poppins', 'Noto Sans TC', sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: url("https://images.unsplash.com/photo-1503264116251-35a269479413?ixlib=rb-4.0.3&q=80&fm=jpg&crop=entropy&cs=tinysrgb") no-repeat center center/cover;
            color: white;
            overflow: hidden;
        }

        .main-container {
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: all 0.5s ease-in-out;
            padding: 20px;
            box-sizing: border-box;
        }

        .login-form-container {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(15px);
            border-radius: 20px;
            padding: 40px;
            width: 400px;
            text-align: center;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            animation: fadeIn 1.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-50px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .login-form-container h2 {
            color: white;
            margin-bottom: 20px;
            font-size: 2.5em;
            font-weight: bold;
            letter-spacing: 2px;
        }

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

        .form-group label {
            color: white;
            font-weight: bold;
            display: block;
            margin-bottom: 8px;
        }

        .form-group input {
            width: 100%;
            padding: 12px;
            border: none;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            font-size: 16px;
            outline: none;
            transition: 0.3s;
            box-sizing: border-box;
        }

        .form-group input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .form-group input:focus {
            background: rgba(255, 255, 255, 0.3);
            box-shadow: 0 0 10px #00f2fe;
        }

        .captcha-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .captcha-container input {
            flex: 1;
            margin-right: 15px;
        }

        .captcha-code {
            font-family: 'Courier New', Courier, monospace;
            font-size: 28px;
            font-weight: bold;
            color: #d9534f;
            background: rgba(255, 255, 255, 0.8);
            padding: 10px 20px;
            border-radius: 10px;
            letter-spacing: 15px;
            cursor: pointer;
            user-select: none;
            transition: 0.3s;
        }

        .captcha-code:hover {
            opacity: 0.8;
            transform: scale(1.05);
        }

        .btn {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 10px;
            background: linear-gradient(135deg, #4facfe, #00f2fe);
            color: white;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .btn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }
        
        /* 系統頁面樣式 */
        .iframe-container {
            position: relative;
            width: 100%;
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            animation: slideIn 1s ease-in-out forwards;
            background: none; /* 移除 iframe 頁面的背景，讓它只顯示 iframe 內容 */
        }

        .iframe-wrapper {
            width: 95%;
            height: 90%;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            background-color: white; /* 確保 iframe 背後有白色背景 */
        }

        iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        .back-button {
            position: absolute;
            top: 30px;
            left: 30px;
            padding: 12px 20px;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 8px;
            cursor: pointer;
            font-size: 16px;
            z-index: 10;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: background-color 0.3s, transform 0.3s;
        }

        .back-button:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        .hidden {
            display: none;
        }

        @keyframes slideIn {
            from { transform: scale(0.95); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }
    </style>
</head>
<body>

    <div class="main-container">
        <div id="login-form-area">
            <div class="login-form-container">
                <h2>系統登入</h2>
                <form id="login-form">
                    <div class="form-group">
                        <label for="username">帳號</label>
                        <input type="text" id="username" name="username" required placeholder="請輸入帳號">
                    </div>
                    <div class="form-group">
                        <label for="password">密碼</label>
                        <input type="password" id="password" name="password" required placeholder="請輸入密碼">
                    </div>
                    <div class="form-group">
                        <label for="captcha">驗證碼</label>
                        <div class="captcha-container">
                            <input type="text" id="captcha" name="captcha" required placeholder="請輸入驗證碼">
                            <span id="captcha-code" class="captcha-code" title="點擊重新整理"></span>
                        </div>
                    </div>
                    <button type="submit" class="btn">登入</button>
                </form>
            </div>
        </div>

        <div id="iframe-area" class="iframe-container hidden">
            <button id="back-to-login-button" class="back-button">回到登入頁</button>
            <div class="iframe-wrapper">
                <iframe
                    id="content-iframe"
                    src="https://cjian2025-systememail.hf.space"
                    frameborder="0"
                ></iframe>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', () => {
            const loginForm = document.getElementById('login-form');
            const usernameInput = document.getElementById('username');
            const passwordInput = document.getElementById('password');
            const captchaInput = document.getElementById('captcha');
            const captchaCodeSpan = document.getElementById('captcha-code');
            const loginFormArea = document.getElementById('login-form-area');
            const iframeArea = document.getElementById('iframe-area');
            const backToLoginButton = document.getElementById('back-to-login-button');

            function generateCaptcha() {
                const chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
                let captcha = '';
                for (let i = 0; i < 6; i++) {
                    captcha += chars.charAt(Math.floor(Math.random() * chars.length));
                }
                captchaCodeSpan.textContent = captcha;
            }

            async function hashString(str) {
                const textEncoder = new TextEncoder();
                const data = textEncoder.encode(str);
                const hashBuffer = await crypto.subtle.digest('SHA-256', data);
                const hashArray = Array.from(new Uint8Array(hashBuffer));
                const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
                return hashHex;
            }

            generateCaptcha();
            captchaCodeSpan.addEventListener('click', generateCaptcha);

            loginForm.addEventListener('submit', async (e) => {
                e.preventDefault();

                const correctUsername = 'ROOT2025';
                const correctPassword = '123456';
                const correctCaptcha = captchaCodeSpan.textContent;

                const userUsername = usernameInput.value;
                const userPassword = passwordInput.value;
                const userCaptcha = captchaInput.value;

                if (userCaptcha.toUpperCase() !== correctCaptcha.toUpperCase()) {
                    alert('驗證碼錯誤！');
                    generateCaptcha();
                    return;
                }

                const hashedUsername = await hashString(userUsername);
                const hashedCorrectUsername = await hashString(correctUsername);

                const hashedUserPassword = await hashString(userPassword);
                const hashedCorrectPassword = await hashString(correctPassword);

                if (hashedUsername === hashedCorrectUsername && hashedUserPassword === hashedCorrectPassword) {
                    alert('登入成功！');
                    loginFormArea.classList.add('hidden');
                    iframeArea.classList.remove('hidden');
                } else {
                    alert('帳號或密碼錯誤！');
                    generateCaptcha();
                }
            });

            backToLoginButton.addEventListener('click', () => {
                loginFormArea.classList.remove('hidden');
                iframeArea.classList.add('hidden');
                loginForm.reset();
                generateCaptcha();
            });
        });
    </script>
</body>
</html>