:root {
    --oxford-blue: #0b132bff;
    --space-cadet: #1c2541ff;
    --yinmn-blue: #3a506bff;
    --verdigris: #5bc0beff;
    --fluorescent-cyan: #6fffe9ff;
}

@font-face{
    font-family: 'Wallpoet';
    src: url('../fonts/Wallpoet-Regular.ttf') format('truetype');
}


* {
    box-sizing: border-box;
}


body {
    margin: 0px;
    padding: 0px;
    font-family: monospace;
    /* font-family: 'Wallpoet', Fallback, monospace;
    font-size: 2em; */
}


header {
    background-color: var(--verdigris);
    color: var(--oxford-blue);
    height: 300px;
    padding: 40px;
    overflow: hidden;
}


header > div {
    width: 100%;
    text-align: center;
    font-family: 'Wallpoet';
    font-size: 4rem;
    transform: scale(1, 1);
    transform-origin: center center;
    opacity: 0.0;
    filter: blur(0);
    animation-name: fade-in;
    animation-duration: 5s;
    animation-delay: 2s;
    animation-fill-mode: forwards;
}

header > div:first-child {
    font-size: 6rem;
    animation-delay: 0s;
}


.main-navigation {
    background-color: var(--space-cadet);
}

.main-navigation > div {
    background-color: var(--verdigris);
    border-radius: 50%;
    border: 1px solid var(--space-cadet);
    padding: 6px;
    width: 25px;
    height: 25px;
    margin-left: auto;
    margin-right: auto;
    transform: scale(2, 2);
}


.sub-navigation-on {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
    gap: 14px;
    border-top: 1px dotted var(--verdigris);
    background-color: var(--space-cadet);
    animation-name: menue-in;
    animation-duration: 500ms;
}

.sub-navigation-on > div {
    background-color: var(--verdigris);
    font-family: 'Wallpoet';
    font-size: 1.2em;
    padding: 8px;
    border: 2px solid var(--space-cadet);
    border-radius: 5px;
    transition: all 350ms;
}

.sub-navigation-on > div:hover {
    background-color: var(--space-cadet);
    border: 2px solid var(--verdigris);
    color: var(--verdigris);
}

.sub-navigation-off {
    display: none;
}


.content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    background-color: var(--yinmn-blue);
    padding: 60px;
}

.content > div {
    padding: 16px;
    color: var(--oxford-blue);    
    font-size: 1.1em;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
}

.content > div:hover {
    background-color: rgba(255, 255, 255, 0.9);
}




footer {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 40px;
    background-color: var(--oxford-blue);
    padding: 60px;
    min-height: 200px;
}

footer > div {
    font-family: monospace;
    color: var(--fluorescent-cyan);
}


.footer-headline {
    font-family: 'Wallpoet';
    font-size: 1.2em;
    color: var(--fluorescent-cyan);
    margin-bottom: 12px;
}


.social-media-icon {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.social-media-icon > div {
    height: 40px;
    width: 40px;
    background-color: var(--fluorescent-cyan);
    padding: 6px;
    border-radius: 5px;
    opacity: 0.7;
}

.social-media-icon > div:hover {
    opacity: 1.0;
}


.infobox {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 1);
    border: 4px solid var(--oxford-blue);
    border-radius: 6px;
    padding: 20px;
    font-size: 1.2em;
    color: var(--oxford-blue);
    text-align: center;
}

.icon-infobox {
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 20px;
    height: 40px;
    width: 40px;
}

.btn-infobox {
    background-color: var(--verdigris);
    font-family: 'Wallpoet';
    font-size: 1em;
    padding: 8px;
    border: 2px solid var(--space-cadet);
    border-radius: 5px;
    transition: all 350ms;
    width: 100px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
}

.btn-infobox:hover {
    background-color: var(--space-cadet);
    border: 2px solid var(--verdigris);
    color: var(--verdigris);
}



@keyframes fade-in
{
    0%      {
                transform: scale(10, 10);
                opacity: 0.1;
                filter: blur(6px);
            }

    100%    {
                transform: scale(1, 1);
                opacity: 1.0;
                filter: blur(0);
            }
}



@keyframes menue-in
{
    0%      {
                transform: translateX(-100%);
            }

    100%    {
                transform: translateX(0);
            }
}




/* CSS-Einstellungungn für Mobile-Devices */

/* CSS für Tablet */
@media only screen and (max-width: 1250px)
{
    header {
        height: 200px;
        padding: 40px;
    }

    header > div {
        font-size: 2rem;
    }
    
    header > div:first-child {
        font-size: 4rem;
    }

    .content {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    footer {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
    }

}


/* CSS für Smartphone */
@media only screen and (max-width: 850px)
{
    header {
        height: 160px;
        padding: 40px;
    }

    header > div {
        font-size: 1.5rem;
    }
    
    header > div:first-child {
        font-size: 2.5rem;
    }

    .content {
        display: grid;
        grid-template-columns: 1fr;
    }

    footer {
        display: grid;
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 80px;
        text-align: center;
    }

    .social-media-icon {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .sub-navigation-on {
        display: block;
        padding: 20px;
        border-top: 1px dotted var(--verdigris);
        background-color: var(--space-cadet);
        animation-name: menue-in;
        animation-duration: 500ms;
        text-align: center;
    }
}