/* 聊天界面样式 */
.chat-messages {
    max-height: 400px;
    overflow-y: auto;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 5px;
    margin-bottom: 15px;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 10px;
    max-width: 80%;
    position: relative;
}

.message-user {
    background-color: #dcf8c6;
    margin-left: auto;
    text-align: right;
    border-bottom-right-radius: 0;
}

.message-assistant {
    background-color: #ffffff;
    margin-right: auto;
    border-bottom-left-radius: 0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message-content {
    word-wrap: break-word;
}

.message-time {
    font-size: 0.7rem;
    color: #888;
    margin-top: 5px;
}

.preview-container {
    max-width: 300px;
    margin: 0 auto;
}

#previewImage {
    max-height: 300px;
    object-fit: contain;
}

.typing-indicator {
    display: inline-block;
    padding: 10px 15px;
    background-color: #f0f0f0;
    border-radius: 10px;
    margin-bottom: 15px;
}

.typing-indicator span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #888;
    border-radius: 50%;
    margin-right: 3px;
    animation: typing 1s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
    margin-right: 0;
}

@keyframes typing {
    0% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0); }
}

.chat-input-container {
    position: relative;
    bottom: 0;
    width: 100%;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .message {
        max-width: 90%;
    }
    
    .chat-messages {
        max-height: 350px;
    }
}