.chat-container {
    position: fixed;
    bottom: 50px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0); /* 几乎全透明 */
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 5;
}

.chat-box {
    width: 90%;
    min-height: 20px;
    max-height: 50vh;
    overflow-y: auto;
    background: rgba(200, 200, 200, 0.1);   /* 淡灰半透明 */
    backdrop-filter: blur(8px);            /* 背景模糊 */
    -webkit-backdrop-filter: blur(8px);    /* Safari 兼容 */
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 8px;
    position: relative;
    z-index: 10;
    display: none;
}

.chat-box.show {
    animation: slideUp 0.3s ease-out forwards;
}

.chat-box.hide {
    animation: slideDown 0.3s ease-in forwards;
}

.message {
    margin: 5px 0;
    padding: 10px 15px;
    max-width: fit-content;
    border-radius: 12px;
    word-break: break-word;
}

.message.user {
    background-color: #daf1fc;
    align-self: flex-end;
    text-align: left;
    margin-left: auto;
}

.message.bot {
    background-color: #eee;
    align-self: flex-start;
    text-align: left;
    margin-right: auto;
    font-size: 14px;
    line-height: 1.5;
}

/* 清除常见 markdown 元素的默认 margin */
.message.bot h1,
.message.bot h2,
.message.bot h3,
.message.bot p,
.message.bot ul,
.message.bot ol,
.message.bot pre,
.message.bot code {
  margin: 0;
  padding: 0;
  font-size: inherit;
}

/* 更友好地渲染列表 */
.message.bot ul,
.message.bot ol {
  padding-left: 1.2em;
}

/* 美化代码块 */
.message.bot pre {
  background: #272822;
  color: #f8f8f2;
  padding: 8px;
  overflow-x: auto;
  border-radius: 4px;
}

.input-row {
    display: flex;
    justify-content: center;
    width: 90%;
    gap: 10px;
}

#userInput {
    flex: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

button {
    padding: 10px 16px;
    font-size: 16px;
    border: none;
    background-color: #007BFF;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.typing {
    color: #aaa;
    font-style: italic;
    animation: blink 1.8s infinite;
}

@keyframes blink {
    50% {
      opacity: 0.3;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100%);
        opacity: 0;
    }
}