body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    color: #333;
}

header {
    background: #0d6efd;
    color: #fff;
    text-align: center;
    padding: 25px 0;
}

nav {
    background: #084298;
    padding: 10px;
    text-align: center;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

h2 {
    color: #0d6efd;
}

.card {
    background: #fff;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

ul {
    padding-left: 20px;
}

input, textarea, button {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
}

button {
    background: #0d6efd;
    color: #fff;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #084298;
}

footer {
    background: #212529;
    color: #fff;
    text-align: center;
    padding: 20px;
}

/* WhatsApp Button */
.whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25d366;
    color: #fff;
    padding: 15px;
    border-radius: 50%;
    text-decoration: none;
    font-size: 20px;
}