body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #faf9f6;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.title {
    background-color: #4A90E2;
    color: #ffffff;
    text-align: center;
    margin: 0;
    padding: 20px;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
    font-size: 24px;
}

.chat-container {
    padding: 20px;
    background: #f7f7f7;
    height: 600px;
    max-height: 600px;
    overflow-y: auto;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

.message {
    display: block;
    margin: 10px 0;
    padding: 12px 16px;
    border-radius: 20px;
    max-width: 80%;
    word-wrap: break-word;
    font-size: 16px;
    line-height: 1.5;
    position: relative;
}

.user-message {
    background-color: #e8f5e9;
    color: #2e7d32;
    margin-left: auto;
    text-align: right;
    border-radius: 20px;
    box-shadow: -4px 4px 8px rgba(0, 0, 0, 0.05);
}

.bot-message {
    background-color: #e3f2fd;
    color: #1565c0;
    margin-right: auto;
    text-align: left;
    border-radius: 20px;
    box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.05);
}

.toggle-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: #4A90E2;
    color: #fff;
    font-size: 16px;
    border: none;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.toggle-btn:hover {
    background-color: #357ABD;
}