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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>AI回收助手 - 对话模式</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        body {
            background-color: #f0f2f5;
            padding: 20px;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .chat-container {
            width: 100%;
            max-width: 800px;
            background: white;
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            overflow: hidden;
            height: 90vh;
            display: flex;
            flex-direction: column;
        }
        .chat-header {
            background: #00c853;
            color: white;
            padding: 25px 30px;
            text-align: center;
            position: relative;
        }
        .chat-header h1 {
            font-size: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }
        .chat-header h1::before {
            content: "🤖";
            font-size: 32px;
        }
        .tagline {
            font-size: 15px;
            opacity: 0.95;
            margin-top: 8px;
        }
        .quick-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 30px;
            background: #f9f9f9;
            border-bottom: 1px solid #eee;
            justify-content: center;
        }
        .action-btn {
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 50px;
            padding: 10px 20px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
            color: #333;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .action-btn:hover {
            background: #00c853;
            color: white;
            border-color: #00c853;
            transform: translateY(-2px);
        }
        .action-btn::before {
            content: "⚡";
        }
        .chat-body {
            flex: 1;
            overflow-y: auto;
            padding: 30px;
            background: #fefefe;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .welcome-card {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            border-radius: 20px;
            padding: 25px;
            margin-bottom: 10px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
        }
        .welcome-card h2 {
            color: #1e88e5;
            margin-bottom: 15px;
            font-size: 22px;
        }
        .welcome-card p {
            color: #333;
            line-height: 1.6;
            margin-bottom: 20px;
        }
        .welcome-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 15px;
        }
        .welcome-feature {
            background: rgba(255, 255, 255, 0.7);
            padding: 15px;
            border-radius: 12px;
            font-size: 14px;
            color: #444;
            text-align: center;
            border-left: 4px solid #00c853;
        }
        .message {
            max-width: 80%;
            padding: 18px;
            border-radius: 20px;
            line-height: 1.5;
            word-wrap: break-word;
        }
        .message.ai {
            background: #e8f5e9;
            align-self: flex-start;
            border-bottom-left-radius: 5px;
            color: #1b5e20;
        }
        .message.user {
            background: #1e88e5;
            color: white;
            align-self: flex-end;
            border-bottom-right-radius: 5px;
        }
        .chat-footer {
            padding: 25px 30px;
            background: white;
            border-top: 1px solid #eee;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .input-wrapper {
            display: flex;
            gap: 15px;
        }
        .input-wrapper textarea {
            flex: 1;
            padding: 18px;
            border: 2px solid #ddd;
            border-radius: 16px;
            font-size: 16px;
            resize: none;
            height: 60px;
            transition: border 0.3s;
            font-family: inherit;
        }
        .input-wrapper textarea:focus {
            border-color: #00c853;
            outline: none;
        }
        .send-btn {
            background: #00c853;
            color: white;
            border: none;
            border-radius: 16px;
            padding: 0 30px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .send-btn:hover {
            background: #00b248;
        }
        .hint-text {
            text-align: center;
            color: #888;
            font-size: 14px;
            line-height: 1.5;
        }
        .hint-text strong {
            color: #1e88e5;
        }
        @media (max-width: 600px) {
            .quick-actions {
                padding: 15px;
                gap: 10px;
            }
            .action-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            .welcome-features {
                grid-template-columns: 1fr;
            }
        }
    </style>
</head>
<body>
    <div class="chat-container">
        <div class="chat-header">
            <h1>AI回收助手</h1>
            <p class="tagline">智能回收，绿色生活</p>
        </div>
        <div class="quick-actions">
            <button class="action-btn">识别物品</button>
            <button class="action-btn">查询价格</button>
            <button class="action-btn">预约上门</button>
            <button class="action-btn">附近站点</button>
            <button class="action-btn">环保知识</button>
        </div>
        <div class="chat-body" id="chatBody">
            <div class="welcome-card">
                <h2>欢迎使用 AI 回收助手！</h2>
                <p>我能够帮助你处理回收相关的各类问题，让回收变得更简单、更智能。</p>
                <div class="welcome-features">
                    <div class="welcome-feature">📸 图片识别可回收物</div>
                    <div class="welcome-feature">💰 实时回收价格查询</div>
                    <div class="welcome-feature">🚚 一键预约上门回收</div>
                    <div class="welcome-feature">🗺️ 智能推荐附近投递点</div>
                </div>
            </div>
            <div class="message ai">
                你好！我是你的 AI 回收助手，随时为你服务。你可以直接输入问题，或点击上方快捷按钮。
            </div>
        </div>
        <div class="chat-footer">
            <div class="input-wrapper">
                <textarea id="userMessage" placeholder="输入你的问题... 按 Enter 发送，Shift + Enter 换行"></textarea>
                <button class="send-btn" id="sendMessage">发送</button>
            </div>
            <div class="hint-text">
                试试提问：<strong>什么物品可以回收？</strong> | <strong>如何预约上门回收？</strong> | <strong>积分规则是什么？</strong>
            </div>
        </div>
    </div>

    <script>
        const chatBody = document.getElementById('chatBody');
        const userMessage = document.getElementById('userMessage');
        const sendMessage = document.getElementById('sendMessage');
        const actionButtons = document.querySelectorAll('.action-btn');

        actionButtons.forEach((btn, index) => {
            btn.addEventListener('click', () => {
                const actions = [
                    "请帮我识别一个可回收物品",
                    "查询当前废纸的回收价格",
                    "我想预约上门回收服务",
                    "查找附近的回收投递点",
                    "介绍一些环保回收知识"
                ];
                userMessage.value = actions[index];
            });
        });

        function addMessage(text, isUser = false) {
            const msg = document.createElement('div');
            msg.className = `message ${isUser ? 'user' : 'ai'}`;
            msg.textContent = text;
            chatBody.appendChild(msg);
            chatBody.scrollTop = chatBody.scrollHeight;
        }

        sendMessage.addEventListener('click', () => {
            sendMessageFunc();
        });

        userMessage.addEventListener('keydown', (e) => {
            if (e.key === 'Enter' && !e.shiftKey) {
                e.preventDefault();
                sendMessageFunc();
            }
        });

        function sendMessageFunc() {
            const text = userMessage.value.trim();
            if (text) {
                addMessage(text, true);
                userMessage.value = '';

                setTimeout(() => {
                    const replies = [
                        "已收到您的请求，正在为您处理...",
                        "这个问题我可以帮您解答，请稍等。",
                        "正在查询相关信息，马上为您呈现。",
                        "好的，关于这个问题，我们的建议是..."
                    ];
                    const randomReply = replies[Math.floor(Math.random() * replies.length)];
                    addMessage(randomReply);
                }, 1000);
            }
        }
    </script>
</body>
</html>