body {
    font-family: 'Segoe UI', sans-serif;
}
header, footer {
    background-color: #0d3b66;
    color: white;
    padding: 1.5em 0;
}
footer {
    text-align: center;
    padding: 1em 0;
}
nav a.nav-link {
    color: white !important;
}
.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25d366;
    color: white;
    border-radius: 30px;
    padding: 10px 16px;
    font-size: 18px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    z-index: 999;
    display: flex;
    align-items: center;
    text-decoration: none;
}
.whatsapp-float i {
    margin-right: 8px;
    font-size: 22px;
}