html, body {
    height: 100%;
    margin: 0;
    padding: 2rem;
    background: #ffffff; /* fond blanc */
    font-family: Arial, sans-serif;
}

h1 {
    color: #270f3e; /* titre mauve */
    margin-bottom: 5px;
}

.description {
    margin-bottom: 15px;
    color: #555;
    font-size: 16px;
}

/* Messages */
#chat-messages {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

.message {
    padding: 10px 15px;
    border-radius: 20px;
    max-width: 75%;
    word-wrap: break-word;
}

.user {
    align-self: flex-end;
    background-color: #270f3e;
    color: white;
}

.bot {
    align-self: flex-start;
    background-color: #e0e0e0;
    color: black;
}

/* Input */
.input-container {
    display: flex;
}

.input-container input[type="text"] {
    flex: 1;
    padding: 10px 15px;
    border-radius: 25px;
    border: 1px solid #ccc;
    outline: none;
    font-size: 14px;
}

.input-container button {
    margin-left: 10px;
    padding: 0 20px;
    border-radius: 25px;
    border: none;
    background-color: #270f3e;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.2s;
}

.input-container button:hover {
    background-color: #3a1f60;
}