body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.chat-container {
    width: 90%;
    max-width: 400px;
    height: 90vh;
    max-height: 600px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-box {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.bot-row {
    justify-content: flex-start;
}

.user-row {
    justify-content: flex-end;
}

.bot-message {
    background: #e9ecef;
    padding: 10px 15px;
    border-radius: 15px;
    max-width: 70%;
    word-wrap: break-word;
}

.user-message {
    background: #d1e7ff;
    padding: 10px 15px;
    border-radius: 15px;
    max-width: 70%;
    word-wrap: break-word;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

#chat-form {
    display: flex;
    border-top: 1px solid #ddd;
}

#user-input {
    flex: 1;
    padding: 12px;
    border: none;
    outline: none;
    font-size: 14px;
}

#chat-form button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
}

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