body {
    background-color: #f4f7f6;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
    border: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.chat-box {
    display: flex;
    flex-direction: column;
}

.footer {
    background-color: #212529;
    color: white;
    padding: 40px 0;
}