/* Allgemeines */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: Arial, sans-serif;
    background-color: #f4f6f9;
    color: #222;
}

/* Kopfbereich */

header {
    background-color: #163b65;
    color: white;
    text-align: center;
    padding: 10px;
}

header h1 {
    font-size: 20px;
    margin: 10px 0 20px;
}

/* Navigation */

nav {
    background-color: #48458f;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    padding: 15px;
}

nav a {
    display: inline-block;
    color: white;
    background-color: #292c68;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 6px;
}

nav a:hover {
    background-color: #3674b5;
    color: white;
}

/* Hauptbereich */

main {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* Abschnitte */

section {
    background-color: white;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 10px;
}

h2 {
    color: #163b65;
}

/* Unsere Werte */

.karten {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin-top: 30px;
}

.box {
    background-color: #eef4fa;
    padding: 25px;
    border-radius: 10px;
    flex: 1 1 250px;
    min-width: 0;
}

.box h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: #163b65;
}

.box p {
    margin: 0;
    line-height: 1.7;
}

/* Fussbereich */

footer {
    background-color: #163b65;
    color: white;
    text-align: center;
    padding: 3px;
    margin-top: 100px;
    font-size: 12px;
}

/* Smartphones */

@media (max-width: 600px) {

    nav {
        gap: 10px;
        padding: 15px;
    }

    nav a {
        font-size: 15px;
        padding: 10px 15px;
    }

    main {
        padding: 15px;
    }

    section {
        padding: 15px;
    }

    .karten {
        flex-direction: column;
        gap: 20px;
    }

    .box {
        flex: none;
        width: 100%;
        padding: 25px;
    }
}