/* ==========================================================
   CSS VARIABLES
========================================================== */

:root {

    /* Hauptfarben */

    --farbe-haupt: #111416;
    --farbe-sekundaer: #191e21;
    --farbe-weitere: #252c30;
    --farbe-link: #a9d3c2;


    /* Akzentfarben */

    --farbe-akzent: #cce4da;
    --farbe-akzent-dunkel: #6f9d89;
    --farbe-warm: #d5bfaa;


    /* Schriftfarben */

    --farbe-text: #e8ebea;
    --farbe-text-soft: #aab2af;
    --farbe-text-dunkel: #121617;


    /* Flächen */

    --farbe-flaeche:
        rgba(255, 255, 255, 0.045);

    --farbe-flaeche-hover:
        rgba(255, 255, 255, 0.075);


    /* Linien */

    --farbe-linie:
        rgba(255, 255, 255, 0.15);

    --farbe-linie-soft:
        rgba(255, 255, 255, 0.075);


    /* Verläufe */

    --verlauf-haupt:
        linear-gradient(
            135deg,
            #0f1214 0%,
            #1c2225 52%,
            #111416 100%
        );

    --verlauf-section:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.025),
            rgba(255, 255, 255, 0)
        );


    /* Schriften */

    --schrift-titel:
        "Manrope",
        Arial,
        sans-serif;

    --schrift-text:
        "Source Serif 4",
        Georgia,
        serif;


    /* Breiten */

    --content-width: 1480px;
    --nav-height: 70px;


    /* Abstände */

    --abstand-klein:
        clamp(1rem, 2vw, 1.5rem);

    --abstand-mittel:
        clamp(2rem, 4vw, 4rem);

    --abstand-gross:
        clamp(5rem, 9vw, 10rem);


    /* Radien */

    --radius-klein: 0.45rem;
    --radius-mittel: 0.9rem;
    --radius-gross: 1.35rem;


    /* Übergänge */

    --transition:
        280ms ease;

}


/* ==========================================================
   RESET
========================================================== */

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


html {
    scroll-behavior: smooth;

    scroll-padding-top:
        calc(var(--nav-height) + 2rem);
}


body {
    margin: 0;

    overflow-x: hidden;

    color: var(--farbe-text);
    background: var(--farbe-haupt);

    font-family: var(--schrift-text);
    font-size: 1rem;
    line-height: 1.7;
}


img,
video {
    display: block;
    width: 100%;
}


button,
input,
textarea,
select {
    font: inherit;
}


a {
    color: var(--farbe-link);
    text-decoration: none;
}


a:hover {
    color: var(--farbe-akzent);
}


h1,
h2,
h3,
h4,
p {
    margin-top: 0;
}


h1,
h2,
h3,
h4 {
    font-family: var(--schrift-titel);
    line-height: 1.08;
    letter-spacing: -0.035em;
}


h1 {
    max-width: 14ch;

    margin-bottom: 1rem;

    font-size:
        clamp(3.4rem, 7vw, 7.5rem);

    font-weight: 600;
}


h2 {
    max-width: 18ch;

    margin-bottom: 1.5rem;

    font-size:
        clamp(2.3rem, 4.5vw, 4.8rem);

    font-weight: 500;
}


h3 {
    margin-bottom: 0;

    font-size:
        clamp(2rem, 3.4vw, 3.8rem);

    font-weight: 500;
}


p:last-child {
    margin-bottom: 0;
}


fieldset {
    min-width: 0;
}


/* ==========================================================
   ACCESSIBILITY
========================================================== */

.skip-link {
    position: fixed;
    z-index: 9999;

    top: 1rem;
    left: 1rem;

    padding: 0.75rem 1rem;

    color: var(--farbe-text-dunkel);
    background: var(--farbe-akzent);

    font-family: var(--schrift-titel);

    transform: translateY(-200%);
}


.skip-link:focus {
    transform: translateY(0);
}


/* ==========================================================
   GENERAL
========================================================== */

.content-container {
    width:
        min(
            calc(100% - clamp(2rem, 8vw, 10rem)),
            var(--content-width)
        );

    margin-inline: auto;
}


.eyebrow {
    margin-bottom: 1rem;

    color: var(--farbe-link);

    font-family: var(--schrift-titel);
    font-size: 0.7rem;
    font-weight: 700;

    letter-spacing: 0.2em;
    text-transform: uppercase;
}


/* ==========================================================
   NAVIGATION
========================================================== */

.site-nav {
    position: fixed;
    z-index: 100;

    top: 0;
    right: 0;
    left: 0;

    min-height: var(--nav-height);

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding-inline:
        clamp(1.25rem, 5vw, 5rem);

    background:
        rgba(12, 15, 16, 0.75);

    border-bottom:
        1px solid var(--farbe-linie-soft);

    backdrop-filter:
        blur(20px);
}


.site-nav__brand {
    color: var(--farbe-text);

    font-family: var(--schrift-titel);
    font-size: 1rem;
    font-weight: 700;
}


.site-nav__brand span {
    color: var(--farbe-link);
}


.site-nav__links {
    display: flex;
    align-items: center;

    gap:
        clamp(1rem, 3vw, 3rem);
}


.site-nav__links a {
    position: relative;

    color: var(--farbe-text-soft);

    font-family: var(--schrift-titel);
    font-size: 0.7rem;
    font-weight: 600;

    letter-spacing: 0.1em;
    text-transform: uppercase;
}


.site-nav__links a::after {
    content: "";

    position: absolute;

    right: 0;
    bottom: -0.45rem;
    left: 0;

    height: 1px;

    background: var(--farbe-link);

    transform: scaleX(0);
    transform-origin: right;

    transition:
        transform var(--transition);
}


.site-nav__links a:hover::after,
.site-nav__links a.is-active::after {
    transform: scaleX(1);
    transform-origin: left;
}


/* ==========================================================
   HERO VIDEO
========================================================== */

.video-hero {
    position: relative;

    min-height: 45vh;
    max-height: 620px;

    display: flex;
    align-items: flex-end;

    overflow: hidden;

    padding:
        calc(var(--nav-height) + clamp(2rem, 4vw, 4rem))
        clamp(1.5rem, 7vw, 8rem)
        clamp(2.5rem, 5vw, 5rem);

    background: var(--farbe-haupt);
}


.video-hero__background {
    position: absolute;

    inset: 0;

    width: 100%;
    height: 100%;

    object-fit: cover;

    transition:
        filter 400ms ease,
        transform 5s ease;
}


.video-hero:hover .video-hero__background {
    filter: brightness(0.8);
}


.video-hero__overlay {
    position: absolute;

    inset: 0;

    pointer-events: none;

    background:

        linear-gradient(
            90deg,
            rgba(8, 10, 11, 0.92) 0%,
            rgba(8, 10, 11, 0.55) 46%,
            rgba(8, 10, 11, 0.12) 100%
        ),

        linear-gradient(
            to top,
            rgba(8, 10, 11, 0.7),
            transparent 65%
        );
}


.video-hero__content {
    position: relative;
    z-index: 2;

    width:
        min(100%, var(--content-width));

    margin-inline: auto;
}


.video-hero__description {
    max-width: 620px;

    margin-bottom: 0;

    color:
        rgba(255, 255, 255, 0.78);

    font-size:
        clamp(1rem, 1.5vw, 1.3rem);
}


.video-hero__status {
    position: absolute;
    z-index: 2;

    right:
        clamp(1.5rem, 4vw, 4rem);

    bottom:
        clamp(1.5rem, 3vw, 3rem);

    color:
        rgba(255, 255, 255, 0.65);

    font-family: var(--schrift-titel);
    font-size: 0.62rem;
    font-weight: 600;

    letter-spacing: 0.12em;
    text-transform: uppercase;
}


.video-hero__status-paused {
    display: none;
}


.video-hero.is-paused
.video-hero__status-running {
    display: none;
}


.video-hero.is-paused
.video-hero__status-paused {
    display: inline;
}


/* ==========================================================
   OVERVIEW
========================================================== */

.overview {
    padding-block:
        clamp(3.5rem, 6vw, 6rem);

    background:

        var(--verlauf-section),

        var(--farbe-haupt);
}


.overview__heading {
    margin-bottom:
        clamp(2rem, 4vw, 3.5rem);
}


.overview__heading h2 {
    margin-bottom: 0;
}


.preview-grid {
    display: grid;

    grid-template-columns:
        repeat(5, minmax(0, 1fr));

    gap:
        clamp(0.75rem, 1.5vw, 1.5rem);
}


.preview-card {
    min-width: 0;

    overflow: hidden;

    color: var(--farbe-text);
    background: var(--farbe-flaeche);

    border:
        1px solid var(--farbe-linie-soft);

    border-radius: var(--radius-mittel);

    transition:

        transform var(--transition),

        background var(--transition),

        border-color var(--transition);
}


.preview-card:hover {
    color: var(--farbe-text);

    background:
        var(--farbe-flaeche-hover);

    border-color:
        var(--farbe-linie);

    transform:
        translateY(-0.4rem);
}


.preview-card__image {
    position: relative;

    aspect-ratio: 16 / 10;

    overflow: hidden;
}


.preview-card__image::after {
    content: "";

    position: absolute;

    inset: 0;

    background:

        linear-gradient(
            to top,
            rgba(8, 10, 11, 0.7),
            transparent 55%
        );
}


.preview-card__image img {
    width: 100%;
    height: 100%;

    object-fit: cover;

    transition:
        transform 650ms ease;
}


.preview-card:hover
.preview-card__image img {
    transform: scale(1.05);
}


.preview-card__number {
    position: absolute;
    z-index: 2;

    left: 0.75rem;
    bottom: 0.75rem;

    width: 2rem;
    height: 2rem;

    display: grid;
    place-items: center;

    color: var(--farbe-text-dunkel);
    background: var(--farbe-akzent);

    border-radius: 50%;

    font-family: var(--schrift-titel);
    font-size: 0.62rem;
    font-weight: 700;
}


.preview-card__content {
    padding:
        clamp(0.9rem, 1.5vw, 1.35rem);
}


.preview-card__content span {
    display: block;

    margin-bottom: 0.45rem;

    color: var(--farbe-link);

    font-family: var(--schrift-titel);
    font-size: 0.56rem;
    font-weight: 700;

    letter-spacing: 0.1em;
    text-transform: uppercase;
}


.preview-card__content h3 {
    font-size:
        clamp(1rem, 1.35vw, 1.35rem);

    line-height: 1.2;
}


/* ==========================================================
   INTRODUCTION
========================================================== */

.introduction {
    padding-block:
        var(--abstand-gross);

    background:
        var(--farbe-sekundaer);
}


.introduction__inner {
    display: grid;

    grid-template-columns:
        minmax(0, 0.9fr)
        minmax(0, 1.1fr);

    align-items: end;

    gap:
        clamp(3rem, 8vw, 9rem);
}


.introduction__lead {
    margin-bottom: 1.25rem;

    color: var(--farbe-text);

    font-size:
        clamp(1.25rem, 2vw, 1.7rem);
}


.introduction__text p:not(.introduction__lead) {
    color: var(--farbe-text-soft);
}


/* ==========================================================
   VIDEO SECTIONS
========================================================== */

.video-section {
    min-height: 80vh;

    display: flex;
    align-items: center;

    padding:
        var(--abstand-gross)
        clamp(1.5rem, 6vw, 7rem);

    border-top:
        1px solid var(--farbe-linie-soft);

    background:

        radial-gradient(
            circle at 15% 20%,
            rgba(169, 211, 194, 0.07),
            transparent 35%
        ),

        var(--farbe-sekundaer);
}


.video-section:nth-of-type(even) {
    background:

        radial-gradient(
            circle at 85% 80%,
            rgba(213, 191, 170, 0.06),
            transparent 35%
        ),

        var(--farbe-haupt);
}


.video-section__inner {
    width:
        min(100%, var(--content-width));

    margin-inline: auto;

    display: flex;
    align-items: center;

    gap:
        clamp(3rem, 7vw, 8rem);
}


.video-section--reverse
.video-section__inner {
    flex-direction: row-reverse;
}


.video-column,
.video-info {
    flex: 1 1 50%;

    min-width: 0;
}


/* ==========================================================
   VIDEO FRAME
========================================================== */

.video-frame {
    position: relative;

    display: block;

    width: 100%;

    aspect-ratio: 16 / 10;

    overflow: hidden;

    color: var(--farbe-text);
    background: #07090a;

    border:
        1px solid var(--farbe-linie);

    border-radius:
        var(--radius-gross);

    box-shadow:
        0 2rem 6rem rgba(0, 0, 0, 0.35);

    cursor: pointer;
}


.video-frame__poster {
    width: 100%;
    height: 100%;

    object-fit: cover;

    opacity: 0.9;

    transition:

        opacity var(--transition),

        transform 700ms ease;
}


.video-frame:hover
.video-frame__poster {
    opacity: 1;

    transform:
        scale(1.025);
}


.video-frame__shade {
    position: absolute;

    inset: 0;

    background:

        linear-gradient(
            rgba(8, 10, 11, 0.05),
            rgba(8, 10, 11, 0.45)
        );
}


.video-frame__overlay {
    position: absolute;

    inset: 0;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    gap: 1rem;
}


.video-frame__play {
    width: clamp(4rem, 7vw, 6rem);
    height: clamp(4rem, 7vw, 6rem);

    display: grid;
    place-items: center;

    color: var(--farbe-text);
    background: rgba(204, 228, 218, 0.1);

    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;

    backdrop-filter: blur(4px);

    transition:
        transform var(--transition),
        background var(--transition),
        border-color var(--transition);
}


.video-frame__play span {
    width: 0;
    height: 0;

    margin-left: 0.25rem;

    border-top: 0.65rem solid transparent;
    border-bottom: 0.65rem solid transparent;
    border-left: 1rem solid currentColor;
}


.video-frame:hover .video-frame__play {
    background: rgba(204, 228, 218, 0.28);
    border-color: rgba(255, 255, 255, 0.75);
    transform: scale(1.08);
}


.video-frame__label {
    color:
        rgba(255, 255, 255, 0);

    font-family: var(--schrift-titel);
    font-size: 0.66rem;
    font-weight: 600;

    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.video-frame:hover .video-frame__label{
    color:
        rgba(255, 255, 255, 1);
}

/* ==========================================================
   INFO IMAGE GALLERY
========================================================== */

.info-gallery {
    min-width: 0;

    margin:
        clamp(1.25rem, 2.5vw, 2rem)
        0
        0;

    padding:
        clamp(1rem, 2vw, 1.5rem);

    background:
        var(--farbe-flaeche);

    border:
        1px solid var(--farbe-linie-soft);

    border-radius:
        var(--radius-mittel);
}


.info-gallery legend {
    padding-inline: 0.75rem;

    color: var(--farbe-text-soft);

    font-family: var(--schrift-titel);
    font-size: 0.65rem;
    font-weight: 700;

    letter-spacing: 0.14em;
    text-transform: uppercase;
}


.info-gallery__grid {
    display: flex;
    flex-wrap: wrap;

    gap: 2.5%;
}


.info-gallery__item {
    position: relative;

    flex: 0 0 18%;

    min-width: 0;

    aspect-ratio: 1 / 1;

    margin-bottom: 2.5%;

    overflow: hidden;

    color: var(--farbe-text);

    background:
        var(--farbe-weitere);

    border:
        1px solid var(--farbe-linie-soft);

    border-radius:
        var(--radius-klein);

    cursor: zoom-in;

    transition:

        transform var(--transition),

        border-color var(--transition);
}


.info-gallery__item:hover {
    color: var(--farbe-text);

    border-color:
        var(--farbe-link);

    transform:
        translateY(-0.25rem);
}


.info-gallery__item img {
    width: 100%;
    height: 100%;

    object-fit: cover;

    opacity: 0.84;

    transition:

        opacity var(--transition),

        transform 500ms ease;
}


.info-gallery__item:hover img {
    opacity: 1;

    transform:
        scale(1.07);
}


.info-gallery__shade {
    position: absolute;

    inset: 0;

    background:

        linear-gradient(
            to top,
            rgba(8, 10, 11, 0.6),
            transparent 50%
        );
}


.info-gallery__number {
    position: absolute;
    z-index: 2;

    left: 0.45rem;
    bottom: 0.35rem;

    color:
        rgba(255, 255, 255, 0.85);

    font-family: var(--schrift-titel);
    font-size: 0.55rem;
    font-weight: 700;
}


.info-gallery__zoom {
    position: absolute;
    z-index: 2;

    top: 0.4rem;
    right: 0.4rem;

    width: 1.55rem;
    height: 1.55rem;

    display: grid;
    place-items: center;

    color: var(--farbe-text-dunkel);
    background: rgba(255,255,255,0.3);

    border-radius: 50%;

    font-family: Arial, sans-serif;
    font-size: 1rem;
    line-height: 1;
}


/* ==========================================================
   VIDEO INFORMATION
========================================================== */

.video-info__header {
    display: flex;
    align-items: flex-start;

    gap: 1.5rem;

    margin-bottom:
        var(--abstand-mittel);
}


.video-info__number {
    flex: 0 0 auto;

    width: 3.5rem;
    height: 3.5rem;

    display: grid;
    place-items: center;

    color: var(--farbe-link);

    border:
        1px solid var(--farbe-linie);

    border-radius: 50%;

    font-family: var(--schrift-titel);
    font-size: 0.7rem;

    letter-spacing: 0.1em;
}


.video-info__fields {
    display: grid;

    gap: 1rem;
}


.video-info fieldset {
    margin: 0;

    padding:
        clamp(1.25rem, 2.5vw, 2rem);

    background:
        var(--farbe-flaeche);

    border:
        1px solid var(--farbe-linie-soft);

    border-radius:
        var(--radius-mittel);
}


.video-info legend {
    padding-inline: 0.75rem;

    color: var(--farbe-text-soft);

    font-family: var(--schrift-titel);
    font-size: 0.65rem;
    font-weight: 700;

    letter-spacing: 0.14em;
    text-transform: uppercase;
}





.prompt-box {
    margin-top: 1.5rem;

    padding: 1rem 1.25rem;

    background:
        rgba(0, 0, 0, 0.2);

    border-radius:
        var(--radius-klein);
}


.prompt-box span {
    display: block;

    margin-bottom: 0.5rem;

    color: var(--farbe-link);

    font-family: var(--schrift-titel);
    font-size: 0.62rem;
    font-weight: 700;

    letter-spacing: 0.12em;
    text-transform: uppercase;
}


.prompt-box p {
    margin-bottom: 0;

    color: var(--farbe-text-soft);

    font-size: 0.92rem;
}


.technical-list {
    display: grid;

    gap: 0.75rem;

    margin: 0;
}


.technical-list > div {
    display: flex;
    justify-content: space-between;

    gap: 1rem;

    padding-bottom: 0.75rem;

    border-bottom:
        1px solid var(--farbe-linie-soft);
}


.technical-list > div:last-child {
    padding-bottom: 0;

    border-bottom: 0;
}


.technical-list dt {
    color: var(--farbe-text-soft);
}


.technical-list dd {
    margin: 0;

    color: var(--farbe-text);

    font-family: var(--schrift-titel);
    font-size: 0.82rem;

    text-align: right;
}


/* ==========================================================
   FOOTER
========================================================== */

.site-footer {
    padding-block: 2rem;

    background: #090b0c;

    border-top:
        1px solid var(--farbe-linie-soft);
}


.site-footer__inner {
    display: flex;
    justify-content: space-between;

    gap: 2rem;

    color: var(--farbe-text-soft);

    font-family: var(--schrift-titel);
    font-size: 0.68rem;

    letter-spacing: 0.08em;
    text-transform: uppercase;
}


.site-footer p {
    margin-bottom: 0;
}


/* ==========================================================
   FANCYBOX ADJUSTMENTS
========================================================== */

.fancybox__container {
    --fancybox-bg:
        rgba(7, 9, 10, 0.96);
}


.fancybox__caption {
    font-family: var(--schrift-text);
    font-size: 1rem;
}


.fancybox__toolbar {
    font-family: var(--schrift-titel);
}


/* ==========================================================
   RESPONSIVE
========================================================== */

@media (max-width: 1200px) {

    .preview-grid {
        grid-template-columns:
            repeat(3, minmax(0, 1fr));
    }

}


@media (max-width: 900px) {

    .video-section__inner,
    .video-section--reverse
    .video-section__inner {
        flex-direction: column;
    }


    .video-column,
    .video-info {
        width: 100%;
    }


    .introduction__inner {
        grid-template-columns: 1fr;

        gap: 1.5rem;
    }


    .video-info__header {
        margin-top: 1rem;
    }

}


@media (max-width: 760px) {

    :root {
        --nav-height: 64px;
    }


    .site-nav__links {
        display: none;
    }


    .video-hero {
        min-height: 52vh;
    }


    .video-hero__status {
        display: none;
    }


    .preview-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


    .info-gallery__grid {
        gap: 3%;
    }


    .info-gallery__item {
        flex-basis: 31.333%;

        margin-bottom: 3%;
    }


    .video-info__header {
        flex-direction: column;
    }


    .technical-list > div {
        flex-direction: column;

        gap: 0.2rem;
    }


    .technical-list dd {
        text-align: left;
    }


    .site-footer__inner {
        flex-direction: column;

        gap: 0.5rem;
    }

}


@media (max-width: 520px) {

    .content-container {
        width:
            calc(100% - 2rem);
    }


    .preview-grid {
        grid-template-columns: 1fr;
    }


    .video-section {
        padding-inline: 1rem;
    }


    .info-gallery__grid {
        gap: 4%;
    }


    .info-gallery__item {
        flex-basis: 48%;

        margin-bottom: 4%;
    }

}


/* ==========================================================
   REDUCED MOTION
========================================================== */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }


    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;

        animation-duration:
            0.01ms !important;

        animation-iteration-count:
            1 !important;

        transition-duration:
            0.01ms !important;
    }

}