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

.chat-container {
    width: 450px;
    height: 90vh;
    max-height: 700px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

.chat-header {
    background-color: #0d6efd;
    color: white;
    padding: 15px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    text-align: center;
}
.chat-header h5 { margin: 0; }
.chat-header span { font-size: 0.8rem; }


.chat-box {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.chat-message {
    padding: 10px 15px;
    border-radius: 18px;
    margin-bottom: 10px;
    max-width: 80%;
    line-height: 1.4;
}

.bot-message {
    background-color: #e9ecef;
    color: #333;
    align-self: flex-start;
}

.user-message {
    background-color: #0d6efd;
    color: white;
    align-self: flex-end;
}

.chat-input {
    display: flex;
    padding: 15px;
    border-top: 1px solid #ddd;
}

#user-input {
    border-radius: 20px;
    margin-right: 10px;
}

#send-btn {
    border-radius: 50%;
    width: 45px;
    height: 45px;
}
.message-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}
.option-button {
    background-color: #fff;
    border: 1px solid #0d6efd;
    color: #0d6efd;
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}
.option-button:hover {
    background-color: #0d6efd;
    color: white;
}