:root {
    --jet-black: #000000;

    --french-gray: #bfb6bb;
    --timberwolf: #d6d3ce;
    --silver: #e8e4df;
    --broken-white: #ede8df;

    --pastel-green: #b6caa5;
    --reseda-green: #59694f;
    --feldgrau: #475440;
    --black-olive: #3b4635;

    --floral-white: #fffdf5;
    --floral-white-2: #fef9f0;

    --cs-backdrop: var(--timberwolf);
    --cs-active: var(--floral-white);
    --cs-inactive: var(--silver);
    --cs-headline-text: var(--feldgrau);
    --cs-border: var(--black-olive);
    --cs-picture-frame: var(--floral-white);
}

@font-face {
    font-family: OpenSans;
    src: url(OpenSans-Regular.ttf);
}
@font-face {
    font-family: Aleo;
    src: url(Aleo-Regular.ttf);
}

body {
    background-color: var(--cs-backdrop);
    font-family: OpenSans, Arial, sans-serif;
    color: var(--jet-black);
    padding: 0.5em;
}

@media (min-width: 768px) {
    body {
        padding: 2em;
    }
}


h1, h2, h3 {
    font-family: Aleo, Georgia, serif;
    color: var(--cs-headline-text);

    font-weight: 700;
    & span[lang] {
        font-weight: 200;
        &.langsel {
            font-weight: 700;
        }
    }
    margin-top: 0.5em;
    margin-bottom: 0em;
}
h1 {
    font-size: 2em;
    text-transform: uppercase;
    margin-top: 1.5em;
}
h2 {
    font-size: 1.5em;
}
h3 {
    font-size: 1.2em;
}
p {
    margin: 0.5em 0em;
}
a {
    color: var(--cs-headline-text);
}
dl {
    dt {
        color: var(--cs-headline-text);
        font-weight: 700;
        margin-top: 0.75em;
    }
    dd {
        margin-left: 1.5em;
    }
}

section {
    margin: 1em 0;
    padding: 0.5em 2em;
}

section.topic {
    background-color: var(--cs-inactive);
    border: 1pt solid var(--cs-border);
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;

    padding-bottom: 1em;

    transition: all 0.5s ease-out;
}
section.topic.expanded {
    background-color: var(--cs-active);
    border: none;
    transition: all 1s ease-out;
}

div[lang] {
    padding: 0;
    margin: 0;
    display: none;
}
div[lang].langsel {
    display: block;
}

div.details {
    display: none;
    padding: 0;
    margin: 0;
}
div.details.expanded {
    display: block;
}


/*
 * Titel / Begrüßung
 */

header.title {
    padding: 0.5em 1em;

    background-color: var(--cs-active);
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;

    display: flex;
    flex-direction: column;    /* logo on top, text below */
    align-items: center;
    text-align: center;        /* text centered */

    img {
        height: 12em;
    }
    h2 {
        font-family: OpenSans, Arial, sans-serif;
        text-transform: uppercase;
        font-size: 1.2em;
        font-weight: normal;
        color: var(--jet-black);
    }
    h1 {
        font-family: Aleo, Georgia, serif;
        text-transform: uppercase;
        font-size: 1.8em;
        font-weight: normal;
        color: var(--jet-black);
    }
}

@media (min-width: 768px) {
    header.title {
        padding: 1em 2em;
        flex-direction: row;      /* logo left, text to the right */
        align-items: center;
        text-align: left;         /* left-align the text block */
        gap: 1rem;
        img {
            margin: 0 2em 0 0;
        }
        h2 {
            font-size: 2em;
        }
        h1 {
            font-size: 3em;
        }
    }
}


/*
 * Button zum Umschalten der Sprache
 */
nav {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: right;
    padding: 10pt 10pt;
    z-index: 1000;

    button {
        background-color: var(--cs-inactive);
        opacity: 0.7;
        font-family: OpenSans, Arial, sans-serif;
        font-weight: medium;
        font-size: 1.0em;
        color: var(--cs-headline-text);
        padding: 8pt 16pt;
        border-radius: 8px;
        border: solid 1pt;
        border-color: var(--cs-border);
    }
}


/*
 * Motto / Sinnspruch
 */

section.motto {
    padding: 0em 0 2em;
}
section.motto p {
    font-family: Aleo, Georgia, serif;
    font-size: 1.5em;
    font-style: italic;
    text-align: center;
    color: var(--cs-headline-text);
}


/*
 * Fotos
 */

figure.frame {
    width: 300px;
    margin-left: 0;
    margin-right: 0.5rem;
    border: 5px solid var(--cs-picture-frame);
    border-radius: 13px;
    box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
figure.frame.portrait {
    width: 200px;
    float: right;
}
@media (min-width: 800px) {
    figure.frame {
        float: right;
        width: 350px;
        margin-left: 1rem;
    }
}
@media (min-width: 1000px) {
    figure.frame {
        float: right;
        width: 400px;
        margin-left: 1.5rem;
    }
}
div.frame {
    position: relative;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: var(--cs-picture-frame); /* placeholder color while first image loads */
}
div.frame.portrait {
    aspect-ratio: 2 / 3;
}
img.frame-img {
    border-radius: 8px;
    position: absolute;
    inset: 0;
    width: 100%; /*height: 100%;*/
    object-fit: cover; object-position: center;
    opacity: 0;
    transition: opacity 1.5s ease; /* cross-fade */
    will-change: opacity;
    display: block;
}
.frame-img.is-active { opacity: 1; }

/*
 * Karte
 */
iframe {
    width: 45rem;
    height: 30rem;
 
    border-radius: 13px;
    border: 2px solid var(--cs-border);
}