.chat-container {
    display: flex;
    flex-direction: column;
    height: 80vh;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid #ccc;
    border-radius: 8px;
    overflow: hidden;
}

.chat-sidebar {
    width: 260px;
    border-right: 1px solid #e5e7eb;
    padding: 1rem;
}

.new-chat-btn {
    width: 100%;
    padding: 0.75rem;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    background-color: #f9f9f9;
}

.message {
    margin: 10px 0;
    padding: 10px;
    border-radius: 5px;
    max-width: 70%;
}

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

.ai-message {
    background-color: #f5f5f5;
    margin-right: auto;
}

.system-message {
    background-color: #ffebee;
    margin: 10px auto;
    text-align: center;
}

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

#messageInput {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#sendButton {
    padding: 10px 20px;
    margin-left: 10px;
    background-color: #2196f3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#sendButton:hover {
    background-color: #1976d2;
}