/* 聊天框樣式 */
.chat-box {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 300px;
    height: 400px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    display: none;
    flex-direction: column;
    z-index: 9999;
}

.chat-header {
    padding: 10px;
    background: #1e88e5;
    color: #fff;
    border-radius: 10px 10px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header .ai-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 10px;
}

.chat-header .ai-name {
    font-size: 16px;
    font-weight: bold;
}

.close-btn {
    cursor: pointer;
    font-size: 20px;
}

.chat-messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
}

.message {
    margin-bottom: 10px;
    padding: 8px 12px;
    border-radius: 15px;
    max-width: 80%;
}

.message.user {
    background: #e3f2fd;
    margin-left: auto;
}

.message.system {
    background: #f5f5f5;
}

.chat-input {
    padding: 10px;
    border-top: 1px solid #eee;
    display: flex;
    gap: 10px;
}

.chat-input textarea {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    resize: none;
    height: 40px;
}

.chat-input button {
    padding: 8px 15px;
    background: #1e88e5;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.chat-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: #1e88e5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    z-index: 9999;
}

.chat-toggle .ai-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.chat-toggle .ai-name {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: #333;
    white-space: nowrap;
}