/* Allgemeines */

* {
    box-sizing: border-box;
}

    body {
        margin: 0;
        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;
    margin: 0;
}

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

/* Hauptbereich */

main {
    max-width: 1000px;
    margin: auto;
    padding: 60px;
    min-height: 76vh;
}

/* Abschnitte */

section {
    background-color: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
}

/* Karten */


/* Karten: 3 nebeneinander */

.karten {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 25px;
    margin-top: 30px;
}

/* Weisse Karten */

.karten .box {
    min-width: 0;
    background-color: white;
    padding: 0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

/* Grüne Überschriften: alle gleich hoch */

.karten .box h2,
.karten .box h3 {
    display: flex;
    align-items: center;
    min-height: 65px;
    background-color: #4b9811;
    color: white;
    padding: 15px 20px;
    margin: 0;
    font-size: 24px;
}

/* Beschreibungen */

.karten .box p {
    padding: 15px 20px 25px 20px;
    margin: 0;
    line-height: 1.6;;
}

/* Bilder */

.kartenbild {
    display: block;
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
}

/* Kontaktbutton */

.button {
    display: inline-block;
    background-color: #24558a;
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 6px;
}

.button:hover {
    background-color: #163b65;
}

/* Footer */

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

@media (min-width: 601px) and (max-width: 800px) {

    main {
        padding: 25px;
    }

    .karten {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 20px;
    }
}

/* Smartphones */


@media (max-width: 600px) {

    header {
        padding: 10px;
    }

    header h1 {
        font-size: 20px;
    }

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

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

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

    main {
        padding: 15px;
    }

    section {
        padding: 15px;
    }

    /* Karten untereinander */

    .karten {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* Weisse Karten */

    .karten .box {
        padding: 0;
        border-radius: 10px;
        overflow: hidden;
    }

    /* Grüne Überschriften */

    .karten .box h2,
    .karten .box h3 {
        min-height: 65px;
        font-size: 22px;
        padding: 15px 20px;
        margin: 0;
    }

    /* Beschreibungen */

    .karten .box p {
        padding: 20px;
        margin: 0;
    }

    /* Bilder */

    .kartenbild {
        height: 200px;
    }
}