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

header {
    background: #1e88e5;
    color: white;
    padding: 30px;
    text-align: center;
}

nav {
    background: #1565c0;
    text-align: center;
    padding: 10px;
}

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

section {
    padding: 40px;
    max-width: 1000px;
    margin: auto;
}

.light {
    background: white;
}

.card {
    background: white;
    padding: 20px;
    margin: 20px 0;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.btn {
    display: inline-block;
    margin-top: 10px;
    background: #1e88e5;
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    text-decoration: none;
}

.btn:hover {
    background: #0d47a1;
}

footer {
    background: #222;
    color: #ccc;
    text-align: center;
    padding: 20px;
}