body {
    font-family: Arial, sans-serif;
    background-color: #eef2f7;
    color: #222b3a;
    margin: 0;
    padding: 0;
    line-height: 1.7;
}

header {
    background-color: #101d3a;
    color: white;
    padding: 20px;
    text-align: center;
}

h1 {
    margin: 0 0 20px;
    font-size: 32px;
}

nav {
    background-color: #243b64;
    padding: 10px;
    border-radius: 8px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

nav li {
    margin: 0;
    padding: 0;
}

nav a {
    display: block;
    color: white;
    background-color: #243b64;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: #4169a1;
    color: white;
}

nav a.aktivna {
    background-color: #ffd166;
    color: #17233d;
    border: 2px solid white;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 25px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h2, h3 {
    color: #243b64;
}

main p {
    margin-bottom: 16px;
}

footer {
    background-color: #101d3a;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}

@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
    }

    main {
        margin: 15px;
        padding: 15px;
    }
}