/* 基本样式 */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#chat-container {
    width: 100%;
    max-width: 1200px;
    min-width: 300px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    height: 80vh;
}

#header {
    text-align: center;
    padding: 20px 0 0 0;
    border-bottom: 1px solid #ccc;
    background-color: #007BFF;
    color: white;
    font-size: 2rem;  /* 使用相对单位 */
    font-weight: bold;
}

#description {
    text-align: center;
    font-size: 1.2rem;  /* 使用相对单位 */
    margin: 10px 0;
}

#backButton {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #FF5733;
    color: white;
    font-size: 1rem;
    cursor: pointer;
}

#backButton:hover {
    background-color: #C70039;
}

#chat {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.message {
    display: flex;
    margin: 5px 0;
}

.question {
    margin-left: auto;
    background-color: #e0f7fa;
    padding: 10px;
    border-radius: 10px;
}

.answer {
    margin-right: auto;
    background-color: #e0e0e0;
    padding: 10px;
    border-radius: 10px;
}

.answer.waiting {
    background-color: #d3d3d3;
    color: #666;
    animation: blinking 1.5s infinite;
}

@keyframes blinking {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

.image {
    margin: 5px 0;
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
}

#input-container {
    display: flex;
    padding: 10px;
    border-top: 1px solid #ccc;
    background-color: #fff;
}

#message {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;  /* 使用相对单位 */
    margin-right: 10px;
}

#photo {
    display: none;
}

#sendButton, #uploadButton {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #007BFF;
    color: white;
    font-size: 1rem;  /* 使用相对单位 */
    cursor: pointer;
}

#sendButton {
    margin-right: 10px;
}

#sendButton:hover, #uploadButton:hover {
    background-color: #0056b3;
}

/* 手机端优化 */
@media (max-width: 768px) {
    #chat-container{
        height:100vh;
    }
    #header {
        font-size: 1.5rem;
    }

    #description {
        font-size: 1rem;
    }

    #backButton {
        font-size: 0.9rem;
    }

    #sendButton, #uploadButton {
        font-size: 0.9rem;
        padding: 8px 15px;
    }

    #message {
        font-size: 0.9rem;
    }
}