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

#chat-container {
    width: 90%;
    max-width: 500px;
    height: 90vh;
    max-height: 700px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#header {
    background-color: #007bff;
    color: white;
    padding: 15px 20px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#header h2 {
    margin: 0;
    font-size: 1.2em;
}

#chat-log {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto; /* Adiciona scroll se o conteúdo passar da altura */
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    padding: 10px 15px;
    border-radius: 18px;
    max-width: 75%;
    line-height: 1.4;
}

.bot-message {
    background-color: #e9e9eb;
    color: #333;
    border-top-left-radius: 0;
    align-self: flex-start;
}

.user-message {
    background-color: #007bff;
    color: white;
    border-top-right-radius: 0;
    align-self: flex-end;
}

#options {
    padding: 20px;
    border-top: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    text-align: center;
    transition: background-color 0.2s;
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
}

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