/* - - - - F O N T S - - - - */

/* font import */
@font-face {
    font-family: 'MetronBold';
    src: url('../fonts/Metron-Bold.eot');
    /* IE9 Compat Modes */
    src: url('../fonts/Metron-Bold.eot?#iefix') format('embedded-opentype'),
        /* IE6-IE8 */
        url('../fonts/Metron-Bold.woff') format('woff'),
        /* Pretty Modern Browsers */
        url('../fonts/Metron-Bold.ttf') format('truetype'),
        /* Safari, Android, iOS */
        url('../fonts/Metron-Bold.svg') format('svg');
    /* Legacy iOS */
    font-display: swap;
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'MetronLight';
    src: url('../fonts/MetronLight.eot');
    /* IE9 Compat Modes */
    src: url('../fonts/MetronLight.eot?#iefix') format('embedded-opentype'),
        /* IE6-IE8 */
        url('../fonts/MetronLight.woff') format('woff'),
        /* Pretty Modern Browsers */
        url('../fonts/MetronLight.ttf') format('truetype'),
        /* Safari, Android, iOS */
        url('../fonts/MetronLight.svg') format('svg');
    /* Legacy iOS */
    font-display: swap;
    font-weight: 100;
    font-style: normal;
}



/* - - - - G L O B A L - - - - */


/* Variablen */
:root {
    --c-ui: #1D1D1D;
    /* var(--c-ui) */

    --c-ui-light: #5A5A5A;
    /* var(--c-ui-light) */

    --c-yellow: #ECB02A;
    /* var(--c-yellow) */

    --c-red: #D65545;
    /* var(--c-red) */

    --c-blue: #3069B2;
    /* var(--c-blue) */

    --c-green: #1B9070;
    /* var(--c-green) */

    --c-purple: #5F40B2;
    /* var(--c-purple) */
}

html {
    /*    cursor: crosshair;
    */
}


/* normalize */

* {
    margin: 0;
    padding: 0;
    border: none;
    outline: none;
}

html,
body {
    width: 100%;
    height: auto;
    overflow-x: hidden;
}

body {
    font-size: 100% !important;
    font-family: 'MetronLight', sans-serif;
    font-weight: 100;
}

a {
    color: #000000;
    text-decoration: none;
}

a:hover {}

*,
*:before,
*:after {
    box-sizing: border-box;
}


/* global transitions */

li,
a,
.start-button {
    -webkit-transition: all 0.09s linear;
    -moz-transition: all 0.09s linear;
    -o-transition: all 0.09s linear;
    -ms-transition: all 0.09s linear;
    transition: all 0.09s linear !important;
}

/* menu hover transitions */

.side-navigation,
.side-navigation li,
.side-navigation li a,
.side-shadow,
.section,
.scroll-area,
.mobile-menu img,
.tooltip-text,
.tooltip-text p {
    -webkit-transition: all 100ms linear;
    -moz-transition: all 100ms linear;
    -o-transition: all 100ms linear;
    -ms-transition: all 100ms linear;
    transition: all 100ms linear !important;
}

/* text selection */

::-moz-selection {
    /* Code for Firefox */
    color: #000000;
    background: #E5E5E5;
}

::selection {
    color: #000000;
    background: #E5E5E5;
}

/* - - - - Wrapper - - - - */

.wrapper {
    position: relative;
    background-color: #FFFFFF;
    width: 100%;
    height: 100%;
}

/* - - - - Navigation - - - - */


/* navigation with active class */

.side-shadow.active-menu,
.side-navigation.active-menu {
    width: 20%;

}

.scroll-area.active-menu {
    left: 20%;
}

/* navigation shadow */
.side-shadow {
    box-shadow: inset -20px 0px 40px -30px rgba(0, 0, 0, 0.2);
    -webkit-box-shadow: inset -20px 0px 40px -30px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: inset -20px 0px 40px -30px rgba(0, 0, 0, 0.2);
    z-index: 2 !important;
    pointer-events: none;
}

.side-navigation,
.side-shadow {
    width: 8%;
    height: 100%;
    position: absolute;
    z-index: 0;
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
}

.side-navigation a {
    color: var(--c-ui);
    opacity: 0.3;
}

.side-navigation hr {
    border-top: 2px solid var(--c-ui);
    opacity: 0.3;
    width: 100%;
    margin-left: 1rem;
    position: absolute;
}

.side-navigation .flag-title a {
    color: white;
    opacity: 1;
    font-size: 0.8rem;
    letter-spacing: 0.02rem;
}

.side-navigation li.active a {
    font-size: 2.5rem;
}

.side-navigation,
.side-navigation nav,
.side-navigation ul {
    height: 100%;
}

.side-navigation li {
    height: calc(100% / 24);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 1rem;

    /* flag margin */
    /*    margin-left: 10px;
    */
}

.side-navigation li.menu-bigger {
    height: calc((100% / 24) * 2);
}

.side-navigation li.menu-bigger a {
    color: white;
}

.side-navigation li.menu-bigger.active {
    height: calc((100% / 24) * 8);
}

.side-navigation li.active {
    height: calc((100% / 24) * 7);
}

.flag-title {
    border-top-left-radius: 27px;
    -webkit-border-top-left-radius: 27px;
    -moz-border-top-left-radius: 27px;

    /* flag margin */
    /*
    margin-top: 10px;
    margin-left: 10px;
*/
}

.side-navigation .flag-title a {
    color: #FFFFFF;
}

.flag-end {
    border-bottom-left-radius: 27px;
    -webkit-border-bottom-left-radius: 27px;
    -moz-border-bottom-left-radius: 27px;

    /* flag margin */
    /*
    margin-bottom: 10px;
    margin-left: 10px;
*/

}

.menu-intro {
    background-color: var(--c-ui);
}

.menu-prehistory {
    background-color: var(--c-yellow);
}

.menu-ancient {
    background-color: var(--c-red);
}

.menu-medieval {
    background-color: var(--c-blue);
}

.menu-modern {
    background-color: var(--c-green);
}

.menu-contemporary {
    background-color: var(--c-purple);
}

.menu-about {
    background-color: var(--c-ui);
    border-radius: 27px 0 0 27px;
    -webkit-border-radius: 27px 0 0 27px;
    -moz-border-radius: 27px 0 0 27px;
}

.menu-about a {
    color: #FFFFFF;
    opacity: 1;
    font-size: 0.8rem !important;
    letter-spacing: 0.02rem;
}

.side-navigation li.active.menu-about {
    height: calc((100% / 24) * 6);
}

/* mobile menu */

.mobile-menu {
    width: 25px;
    position: absolute;
    right: 30px;
    top: 30px;
    z-index: 10;
}

.mobile-menu img {
    width: 100%;
    position: absolute;
}

/* - - - - Scroll Area - - - - */

.scroll-area {
    position: absolute;
    width: 92%;
    left: 8%;
}

.section {
    z-index: 1;
    color: #FFFFFF;
    overflow: hidden !important;
}

.section-wrapper {
    padding: 3.5rem;
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.section-bottom {
    margin-top: auto;
}


/* - - - - T Y P O G R A P H Y  &  E L E M E N T S - - - - */


strong {
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
}

/* title & subtitle */
.title {
    font-size: 7rem;
    line-height: 90%;
}

.subtitle {
    font-size: 1.8rem;
    margin-top: 1rem;
}

/* introsection */
.big-light {
    font-family: 'MetronLight', sans-serif;
    font-weight: 100;
    font-size: 5rem;
    line-height: 94%;
    letter-spacing: -0.12rem;
}

/* text */
.text-title {
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    font-size: 1.4em;
    margin-bottom: 1rem;
}

.text {
    line-height: 130%;
}

.text sup {
    line-height: 1px;
    font-size: 0.56rem;
}

.text sup a {
    color: #FFFFFF;
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
}

#section3 .text sup a:hover,
#section4 .text sup a:hover {
    color: var(--c-yellow);
}

#section5 .text sup a:hover,
#section6 .text sup a:hover {
    color: var(--c-red);
}

#section7 .text sup a:hover,
#section8 .text sup a:hover {
    color: var(--c-blue);
}

#section9 .text sup a:hover,
#section10 .text sup a:hover {
    color: var(--c-green);
}

#section11 .text sup a:hover,
#section12 .text sup a:hover {
    color: var(--c-purple);
}

.column {
    width: 300px;
    float: left;
}

/* 2nd column has space left */
p.column:nth-child(3),
div.column:nth-child(2) {
    margin-left: 2rem;
}

#section13 .column {
    width: 400px;
}


#section13 .column p {
    margin-bottom: 1rem;
}

#section13 .column p a {
    color: #FFFFFF;
}

#section13 .column p span {
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.7rem;
    line-height: 10%;
}


/* tooltip button */

button {
    color: #FFFFFF;
    background-color: var(--c-ui);
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    width: 60px;
    height: 60px;
    margin-bottom: 0.8rem;
    margin-right: 0.3rem;


    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;

    -webkit-transition: all 0.1s ease-out;
    -moz-transition: all 0.1s ease-out;
    -o-transition: all 0.1s ease-out;
    -ms-transition: all 0.1s ease-out;
    transition: all 0.1s ease-out !important;
}

button.active {
    background-color: #FFFFFF;
    color: var(--c-ui);
}

button:hover {
    background-color: #FFFFFF;
    color: var(--c-ui);
}

/* tooltip text */
.tooltip {
    width: 400px;
    bottom: 0px;
    position: absolute;
    z-index: 5;

    right: -350px;
    -webkit-transition: all 0.7s ease;
    -moz-transition: all 0.7s ease;
    -o-transition: all 0.7s ease;
    -ms-transition: all 0.7s ease;
    transition: all 0.7s ease !important;
}

.active .tooltip {
    right: 0px;
}

.tooltip-text {
    background-color: var(--c-ui);
    border-top-left-radius: 27px;
    -webkit-border-top-left-radius: 27px;
    -moz-border-top-left-radius: 27px;
    padding: 2rem 2.5rem 2.5rem 2rem;
}

/* section typo */

/* section date & animation */
.section-date {
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    font-size: 6rem;
    z-index: 1;

    transform: scale(0.5);
    transform-origin: top left;

    -webkit-transition: transform 0.7s ease;
    -moz-transition: transform 0.7s ease;
    -o-transition: transform 0.7s ease;
    -ms-transition: transform 0.7s ease;
    transition: transform 0.7s ease !important;
}

.active .section-date {
    transform: scale(1.0);
}

.section-date sup {
    font-family: 'MetronLight', sans-serif;
    font-weight: 100;
    font-size: 4rem;
}

/* section title & animation */
.section-title {
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    margin-top: auto;
    font-size: 5rem;
    font-size: 8rem;
    line-height: 80%;
    z-index: 1;

    transform: scale(0.5);
    transform-origin: top left;

    -webkit-transition: transform 0.7s ease;
    -moz-transition: transform 0.7s ease;
    -o-transition: transform 0.7s ease;
    -ms-transition: transform 0.7s ease;
    transition: transform 0.7s ease !important;
}

.active .section-title {
    transform: scale(1.0);
}



/* 3D area */

.canvas {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 0;
    margin-left: -3.5rem;
    margin-top: -3.5rem;
    mix-blend-mode: multiply;

    opacity: 0.2;
    transform: scale(0.0);
    transform-origin: center center;

    -webkit-transition: all 0.7s ease;
    -moz-transition: all 0.7s ease;
    -o-transition: all 0.7s ease;
    -ms-transition: all 0.7s ease;
    transition: all 0.7s ease !important;
}

.active .canvas {
    opacity: 1;
    transform: scale(1.0);
}


/* - - - - S E C T I O N S - - - - */

/* - - - - 0 Intro  - - - - */

/* title */
#section0 {
    background-color: var(--c-ui);
}

#section0 .canvas {
    mix-blend-mode: normal;
    transform: scale(2);
}

#section0 .section-wrapper {
    background: url('../img/intro.png') no-repeat center center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.hidden {
    display: none;
}

#section0.active .canvas {
    transform: scale(1.0);
}


.title-area {
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    mix-blend-mode: color-dodge;
    position: absolute;
    width: calc(100% - 7rem);

    margin: 0 auto;
    text-align: center;
}

.start-button {
    color: var(--c-ui);
    background-color: white;
    border-radius: 27px 27px 0 0;
    -webkit-border-radius: 27px 27px 0 0;
    -moz-border-radius: 27px 27px 0 0;
    text-align: center;
    padding: 16px 25px 12px 25px;
    display: inline-block;
    width: fit-content;
    font-family: 'MetronBold', sans-serif;
    font-weight: 700;
    bottom: 0px;
    position: absolute;
    border: 1px solid white;
    border-bottom: none;
    left: 0;
    right: 0;
    margin-left: auto;
    margin-right: auto;
    min-width: 90px;
}

.start-button:hover {
    color: white;
    border: 1px solid white;
    border-bottom: none;
    background-color: var(--c-ui);
}

/* introduction */
#section1 {
    background-color: var(--c-ui);
}

/* table overview */
#section2 {
    background-color: var(--c-ui);
}

#section2 .section-wrapper {
    padding: 0px;
}

#section2 .big-light {
    padding-top: 3.5rem;
    padding-left: 3.5rem;
}

/* grid container */
#section2 .section-bottom {
    display: grid;
    justify-items: stretch;
    grid-template-columns: 40% 1fr;
    grid-template-rows: 1fr 1fr 1fr 1fr 1fr;
    background-color: #3a3a3a;
    column-gap: 2px;
    row-gap: 2px;
    border-top: 2px solid #3a3a3a;
    height: calc((100% / 24)*15);
}

/* grid elements */
#section2 .section-bottom div {
    background-color: var(--c-ui);
    padding-left: 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* subgrid */
#section2 .section-bottom .subgrid {
    display: grid;
    justify-items: stretch;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    background-color: #3a3a3a;
    row-gap: 2px;
    padding-left: 0;
}

#section2 .section-bottom .subgrid p {
    background-color: var(--c-ui);
    padding: 1rem;
    display: grid;
    align-content: center;

}

.subgrid.prehistory {
    color: var(--c-yellow);
}

.subgrid.ancient {
    color: var(--c-red);
}

.subgrid.medieval {
    color: var(--c-blue);
}

.subgrid.modern {
    color: var(--c-green);
}

.subgrid.contemporary {
    color: var(--c-purple);
}

/* - - - - 1 Prehistory  - - - - */

/* stone tools */

#section3 {
    background-color: var(--c-yellow);
}

/* state 1*/
p.button-state-1 {
    opacity: 0;
    display: none;
}

p.button-state-1.active {
    opacity: 1;
    display: block;
}

/* state 2*/
p.button-state-2 {
    opacity: 0;
    display: none;
}

p.button-state-2.active {
    opacity: 1;
    display: block;
}

a.button-state-2,
img.button-state-2 {
    position: absolute;
    z-index: 1;
    width: 400px;
    left: 12%;
    top: 19%;
    border-radius: 20px;
    opacity: 0;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    transition: all 0.3s ease !important;
    pointer-events: none;
}

a.button-state-2,
img.button-state-2.active {
    opacity: 1;
}

/* state 3*/
p.button-state-3 {
    opacity: 0;
    display: none;
}

p.button-state-3.active {
    opacity: 1;
    display: block;
}

a.button-state-3,
img.button-state-3 {
    position: absolute;
    z-index: 1;
    width: 400px;
    right: 10%;
    top: 15%;
    border-radius: 20px;
    opacity: 0;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    transition: all 0.3s ease !important;
    pointer-events: none;
}

a.button-state-3.active,
img.button-state-3.active {
    opacity: 1;
}


/* fire */

#section4 {
    background-color: var(--c-yellow);
}

#fire-text {
    width: 300vw;
    height: auto;
    pointer-events: none;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    /*    mix-blend-mode: color-dodge;
    */
    -webkit-transition: all 0.7s ease;
    -moz-transition: all 0.7s ease;
    -o-transition: all 0.7s ease;
    -ms-transition: all 0.7s ease;
    transition: all 0.7s ease !important;
}

#fire-text.state_1 {
    right: -275vw;
}

#fire-text.state_2 {
    right: -210vw;
}

#fire-text.state_3 {
    right: -120vw;
}


/* - - - - 2 Ancient  - - - - */

/* written words */

#section5 {
    background-color: var(--c-red);
}

#written-text {
    width: 200vw;
    height: auto;
    pointer-events: none;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    z-index: -1;

    -webkit-transition: all 0.7s ease;
    -moz-transition: all 0.7s ease;
    -o-transition: all 0.7s ease;
    -ms-transition: all 0.7s ease;
    transition: all 0.7s ease !important;
}

#written-text.state_1 {
    right: -185vw;
}

#written-text.state_2 {
    right: -100vw;
}

#written-text.state_3 {
    right: 5vw;
}

#section6 {
    background-color: var(--c-red);
}


/* - - - - 3 Medieval  - - - - */

/* clock */
#section7 {
    background-color: var(--c-blue);
}

#section7 img.button-state-2 {
    width: 400px;
    top: calc(50% - 200px) !important;
    left: calc(50% - 200px) !important;
}

#section7 img.button-state-3 {
    width: 550px;
    top: calc(50% - 275px) !important;
    left: calc(50% - 275px) !important;
}

/* press */
#section8 {
    background-color: var(--c-blue);
}

#section8 img.button-state-2 {
    width: 529px;
    transform: perspective(400px) rotateY(17deg);
    top: 34%;
    left: 33%;
    /*    transition-delay: 1s !important;
    */
    -webkit-transition: all 1.0s ease;
    -moz-transition: all 1.0s ease;
    -o-transition: all 1.0s ease;
    -ms-transition: all 1.0s ease;
    transition: all 1.0s ease !important;
}

#section8 img.button-state-3 {
    width: 799px;
    transform: perspective(400px) rotateY(17deg);
    top: 16.5%;
    left: 28%;
    -webkit-transition: all 1.0s ease;
    -moz-transition: all 1.0s ease;
    -o-transition: all 1.0s ease;
    -ms-transition: all 1.0s ease;
    transition: all 1.0s ease !important;
}


/* - - - - 4 Modern  - - - - */

#section9 {
    background-color: var(--c-green);
}

/* steam */
#section10 {
    background-color: var(--c-green);
}

#section10 img.button-state-2 {
    left: 12%;
    top: 32%;
}

#section10 img.button-state-3 {
    right: 7%;
    top: 10%;
}

/* - - - - 5 Contemporary  - - - - */

/* computer */
#section11 {
    background-color: var(--c-purple);
}

#canvas-computer {
    /*    mix-blend-mode: multiply;
    */
}

#computer-text {
    width: 300vw;
    height: auto;
    pointer-events: none;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    z-index: -1;

    -webkit-transition: all 0.7s ease;
    -moz-transition: all 0.7s ease;
    -o-transition: all 0.7s ease;
    -ms-transition: all 0.7s ease;
    transition: all 0.7s ease !important;
}

#computer-text.state_1 {
    right: -250vw;
}

#computer-text.state_2 {
    right: -150vw;
}

#computer-text.state_3 {
    right: 5vw;
}

/* smartphone */

#section12 {
    background-color: var(--c-purple);
}

#section12 img.button-state-2 {
    width: 336px;
    left: calc(50% - 168px);
    top: calc(50% - 354px);
}

#section12 a.button-state-3 {
    width: 460px;
    left: calc(50% - 230px);
    top: calc(50% - 151px);
    border-radius: 0px;
    z-index: 2;
    pointer-events: initial;
    display: none;
}

#section12 a.button-state-3.active {
    display: block;
}

#section12 a.button-state-3 img {
    width: 100%;
}


/* - - - - 6 About  - - - - */

#section13 {
    background-color: var(--c-ui);
}




/* - - - - R E S P O N S I V E - - - - */

/* show only on mobile devices */
.mobile {
    display: none;
}

/* Small devices including tablet */
@media (max-width: 1024px) {

    /* text legibility */

    body,
    html,
    h1 {
        text-rendering: optimizeLegibility !important;
    }

    /* mobile menu */
    .flag-title,
    .flag-end,
    .menu-about {
        -webkit-border-radius: 0;
        -moz-border-radius: 0;
        border-radius: 0;
    }

    #menu li a,
    #menu hr {
        opacity: 0;
    }

    .side-navigation,
    .side-shadow {
        width: 5%
    }

    .scroll-area {
        width: 95%;
        left: 5%;
        opacity: 1;
    }

    .menu-closed {
        opacity: 1;
    }

    .menu-opened {
        opacity: 0;
    }

    /* mobile menu active */
    .wrapper {
        background-color: var(--c-ui);
    }

    .active #menu li a,
    .active #menu hr {
        opacity: 0.3;
    }

    .active #menu .flag-title a {
        opacity: 1;
    }

    .active .side-navigation,
    .active .side-shadow {
        width: 50%;
        box-shadow: 10px 0px 40px 10px rgba(0, 0, 0, 0.2);
        -webkit-box-shadow: 10px 0px 40px 10px rgba(0, 0, 0, 0.2);
        -moz-box-shadow: 10px 0px 40px 10px rgba(0, 0, 0, 0.2);
    }

    .active .scroll-area {
        width: 95%;
        left: 50%;
        opacity: 0.3;
        pointer-events: none;
    }

    .active .menu-closed {
        opacity: 0;
    }

    .active .menu-opened {
        opacity: 1;
    }

    /* font sizes */
    p.column {
        padding-right: 2rem;
    }

    p.column:nth-child(3),
    div.column:nth-child(2) {
        margin-top: 0.8rem;
        margin-left: 0px;
    }

    .big-light {
        font-size: 4rem;
        line-height: 100%;
        padding-right: 3rem;
    }

    .section-title {
        font-size: 5rem;
    }

    .section-date {
        font-size: 5rem;
    }

    .section-date sup {
        font-size: 2rem;
    }


    /* overview */
    #section2 .section-bottom {
        font-size: 0.7rem !important;
        height: auto;
    }

    /* hide images on 3d models */

    #section3 img,
    #section7 img,
    #section8 img,
    #section10 img,
    #section12 img {
        display: none;
    }

    /* imprint */
    #section13 .section-bottom {
        font-size: 0.7rem !important;
    }

    /* no interactive canvas */
    .canvas {
        pointer-events: none;
    }
}


/* Only phone */

@media (max-width: 767.98px) {

    /* show mobile only elements */
    .mobile {
        display: block !important;
    }

    .canvas {
        -webkit-transition: all 100ms linear;
        -moz-transition: all 100ms linear;
        -o-transition: all 100ms linear;
        -ms-transition: all 100ms linear;
        transition: all 100ms linear !important;
        transform-origin: center top;
    }

}

@media (max-width: 767.98px),
only screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2),
only screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3),
only screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) {

    /* show mobile only elements */
    .mobile {
        display: block;
    }

    /* mobile buttons + animation */
    .button-mobile {
        width: 60px;
        height: 100px;
        border-radius: 30px 30px 0 0;
        -webkit-border-radius: 30px 30px 0 0;
        -moz-border-radius: 30px 30px 0 0;
        padding-top: 12px;
        margin-right: 2rem;
        margin-bottom: -20px;
        float: right;

        color: #FFFFFF;
        background-color: var(--c-ui);

        font-size: 2rem;
        text-align: center;
        font-family: 'MetronLight', sans-serif;
        font-weight: 100;

        transition: all 0.1s ease-out !important;
    }

    .hide-textbox .tooltip-text {
        /*        bottom: -100px;*/
        height: 0px;
        padding: 0;
    }

    .hide-textbox .tooltip-text p {
        opacity: 0;
    }

    .button-mobile span {
        display: block;
        height: 0;
    }

    .show {
        opacity: 0;
    }

    .hide {
        opacity: 1;
    }

    .hide-textbox .show {
        opacity: 1;
    }

    .hide-textbox .hide {
        opacity: 0;
    }

    .hide-textbox canvas {
        height: calc(100% - 2rem);
    }

    /* font sizes */

    /* title */
    .title-area {
        width: calc(100% - 4rem);
        padding: 2rem;
    }

    .title {
        font-size: 19vw;
    }

    .subtitle {
        font-size: 1.5rem;
    }

    .section-wrapper {
        padding: 2rem;
    }

    .big-light {
        font-size: 2rem;
        font-size: 1.7rem;
        line-height: 100%;
        padding-right: 4rem;
        letter-spacing: -0.02rem;
    }

    #section1 .big-light,
    #section2 .big-light,
    #section13 .big-light {
        padding-top: 0rem;
        padding-left: 0rem;
    }

    #section2 h3 {
        display: none;
    }

    #section1 .section-wrapper,
    #section2 .section-wrapper,
    #section13 .section-wrapper {
        padding: 1.5rem !important;
    }

    /* imprint */
    #section13 .section-wrapper {
        padding-right: 0;
    }

    #section13 .column {
        width: 50%;
        padding-right: 2rem;
        margin-top: 0;
    }

    #section13 br {
        line-height: 0;
    }

    #section13 .section-bottom {
        margin-top: 2rem;
        font-size: 0.7rem !important;
    }

    #section13 .big-light {
        padding-right: 5rem;
    }

    /* 3D model text */
    .section-date,
    .section-date sup {
        font-size: 1.3rem;
    }

    .section-date sup {
        font-size: inherit;
        vertical-align: inherit;
    }

    .tooltip {
        width: 100%;
    }

    .tooltip-text {
        border-radius: 0px;
        padding: 2rem;
    }

    .text-title {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }

    .tooltip-buttons {
        margin-left: 2rem;
    }

    .section-title {
        margin-top: 0.2rem;
        font-size: 2rem;
        line-height: 100%;
    }

    .section-title br {
        display: none;
    }

    /* 3d model canvas size */
    .canvas {
        height: 60%;
        width: 100%;
        margin: 0;
        margin-left: -2rem;
    }

    /* overview */

    #section2 .section-bottom div {
        padding-left: 1rem;
    }

    #section2 .section-wrapper {
        padding: 0 !important;
    }

    #section2 .section-bottom {
        height: 100%;
    }

    /* animation images */

    #fire-text {
        width: 350vw;
        top: 40%;
    }

    #fire-text.state_1 {
        right: -330vw;
    }

    #fire-text.state_2 {
        right: -250vw;
    }

    #fire-text.state_3 {
        right: -140vw;
    }

    #written-text {
        width: 400vw;
        top: 40%;
    }

    #written-text.state_1 {
        right: -370vw;
    }

    #written-text.state_2 {
        right: -200vw;
    }

    #computer-text {
        width: 400vw;
        top: 40%;
    }

    #computer-text.state_1 {
        right: -380vw;
    }

    #computer-text.state_2 {
        right: -200vw;
    }

    #computer-text.state_3 {
        right: -25vw;
    }
}

/* screens */

@media (min-width: 1025px) {

    /* hide mobile menu */

    .menu-opened,
    .menu-closed {
        display: none;
    }
}

/* large screens */

@media (min-width: 1920px) {
    .big-light {
        max-width: 70%;
    }

    .title {
        font-size: 8rem;
    }
}