:root {
    --text: #303030;
    --heading: #2f3032;
    --muted: #666666;
    --line: #e6e2de;
    --paper: #ffffff;
    --soft: #f7f5f2;
    --red: #A82121;
    --max: 1080px;
    --header-max: 1320px;
    --measure: 68ch;
    --phi: 1.618;
    --phi-space: 1.618rem;
    --font-sans: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: light;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.65;
    color: var(--text);
    background: var(--paper);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-underline-offset: 0.18em;
}

a:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 0.25rem;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    width: 100%;
    padding: 1rem max(var(--phi-space), calc((100vw - var(--header-max)) / 2 + var(--phi-space)));
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: calc(var(--phi-space) * var(--phi));
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.96);
}

.site-header.compact {
    padding-bottom: 1rem;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.text-logo {
    display: grid;
    grid-template-columns: clamp(9.6rem, 15.36vw, 12rem) max-content;
    align-items: center;
    column-gap: 0.15rem;
    line-height: 1;
    text-align: left;
    text-transform: uppercase;
}

.text-logo > span,
.text-logo > strong {
    display: block;
    width: 100%;
    white-space: nowrap;
}

.text-logo > span {
    color: var(--red);
    font-weight: 400;
}

.text-logo strong {
    color: #7f7f7f;
    font-weight: 500;
}

.logo-line-main {
    position: relative;
    display: block;
    width: 4.8em;
    min-height: 1em;
    font-size: clamp(2rem, 3.2vw, 2.5rem);
    letter-spacing: 0.04em;
    word-spacing: 0.08em;
    white-space: nowrap;
}

.brand-switch span {
    position: absolute;
    top: 0;
    display: block;
    color: #7f7f7f;
    transition: color 1100ms ease, opacity 1000ms ease, transform 1400ms ease;
}

.brand-h-start {
    left: 0;
    transform: translateX(-0.1em);
}

.brand-ans {
    left: 0.64em;
}

.brand-gap {
    display: none;
}

.brand-nix {
    left: 2.95em;
}

.brand-switch.is-short .brand-h-start {
    color: var(--red);
    transform: translateX(1.82em);
}

.brand-switch.is-short .brand-ans,
.brand-switch.is-short .brand-gap {
    opacity: 0;
}

.brand-switch.is-short .brand-nix {
    transform: translateX(-2.95em);
}

.logo-subline {
    display: grid;
    gap: 0.38em;
    align-content: center;
    color: var(--red);
    font-size: clamp(0.82rem, 1.25vw, 1rem);
    font-weight: 400;
    letter-spacing: 0.16em;
    line-height: 1;
    opacity: 1;
    transform: translateY(0.12em);
    transition: opacity 800ms ease, transform 1000ms ease;
}

.text-logo .logo-subline {
    width: auto;
}

.text-logo .logo-subline span {
    display: block;
    width: auto;
}

.text-logo.is-short .logo-subline {
    opacity: 0;
    transform: translate(-0.35em, 0.12em);
}

@media (prefers-reduced-motion: reduce) {
    .brand-switch span,
    .logo-subline {
        transition: none;
    }
}

nav {
    display: flex;
    justify-content: center;
    gap: clamp(1rem, 4vw, calc(var(--phi-space) * var(--phi)));
    flex-wrap: wrap;
    font-size: 0.86rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

nav a,
.site-footer a {
    color: var(--muted);
    text-decoration: none;
}

nav a:hover,
.site-footer a:hover {
    color: var(--red);
}

.hero {
    position: relative;
    isolation: isolate;
    max-width: 920px;
    margin: 0 auto;
    padding: clamp(4.2rem, 8vw, 6.8rem) 2rem clamp(5.2rem, 10vw, 8.4rem);
    text-align: center;
}

.hero-background {
    position: absolute;
    inset: 0 auto 0 50%;
    width: 100vw;
    transform: translateX(-50%);
    overflow: hidden;
    z-index: -1;
}

.hero-background::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.78);
}

.hero-background span {
    position: absolute;
    inset: 0;
    background-position: center;
    background-size: cover;
    opacity: 0;
    animation: hero-background-fade 60s infinite;
}

.hero-background span:nth-child(1) {
    background-image: url("../img/hero-start.webp");
}

.hero-background span:nth-child(2) {
    background-image: url("../img/hero-java.webp");
    animation-delay: -48s;
}

.hero-background span:nth-child(3) {
    background-image: url("../img/hero-integration.webp");
    animation-delay: -36s;
}

.hero-background span:nth-child(4) {
    background-image: url("../img/hero-modernisierung.webp");
    animation-delay: -24s;
}

.hero-background span:nth-child(5) {
    background-image: url("../img/hero-beratung.webp");
    animation-delay: -12s;
}

@keyframes hero-background-fade {
    0%,
    20.833% {
        opacity: 1;
    }

    25%,
    95.833% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero-background span,
    .hero-intro-rotation p {
        animation: none;
    }

    .hero-background span:not(:first-child),
    .hero-intro-rotation p:not(:first-child) {
        display: none;
    }

    .hero-intro-rotation p:first-child {
        opacity: 1;
    }
}

h1,
h2,
h3,
p {
    overflow-wrap: break-word;
}

h1 {
    margin: 1rem 0 0.7rem;
    color: var(--heading);
    font-size: clamp(2.25rem, 5.8vw, 4.8rem);
    line-height: 1.04;
    letter-spacing: -0.05em;
}

.claim {
    max-width: 760px;
    margin: 0 auto calc(var(--phi-space) * var(--phi));
    color: var(--red);
    font-size: clamp(1.35rem, 3vw, 2.1rem);
    line-height: 1.25;
}

.intro {
    max-width: var(--measure);
    margin: 0 auto;
    color: var(--muted);
    font-size: 1.12rem;
}

.hero-intro-rotation {
    position: relative;
    min-height: 4.6em;
}

.hero-intro-rotation p {
    position: absolute;
    inset: 0;
    margin: 0;
    opacity: 0;
    animation: hero-text-fade 72s infinite;
}

.hero-intro-rotation p:nth-child(2) {
    animation-delay: -60s;
}

.hero-intro-rotation p:nth-child(3) {
    animation-delay: -48s;
}

.hero-intro-rotation p:nth-child(4) {
    animation-delay: -36s;
}

.hero-intro-rotation p:nth-child(5) {
    animation-delay: -24s;
}

.hero-intro-rotation p:nth-child(6) {
    animation-delay: -12s;
}

@keyframes hero-text-fade {
    0%,
    15.278% {
        opacity: 1;
    }

    17.361%,
    97.917% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

.section {
    scroll-margin-top: 4.5rem;
    border-top: 1px solid var(--line);
    max-width: var(--max);
    margin: 0 auto;
    padding: clamp(4rem, 8vw, 6rem) 2rem;
}

.section h2 {
    margin: 0 0 2.5rem;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 400;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
    color: var(--red);
}

.services-grid,
.content-rotation {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 3.5rem 4.5rem;
}

.content-slot {
    position: relative;
    min-height: 13rem;
}

.content-card {
    margin: 0;
}

.content-card p {
    margin-bottom: 0;
}

.content-rotation > article {
    display: none;
}

.content-rotation.is-loaded .content-card {
    position: absolute;
    inset: 0;
    opacity: 0;
    z-index: 0;
    transition: opacity 1000ms ease-in-out;
}

.content-rotation.is-loaded .content-card.is-visible {
    opacity: 1;
    z-index: 2;
}

.content-rotation.is-loaded .content-card.is-leaving {
    opacity: 0;
    z-index: 1;
}

.content-rotation-error .content-card {
    color: var(--muted);
}

.content-navigation {
    display: flex;
    justify-content: center;
    gap: 0.65rem;
    margin-top: 2.25rem;
}

.content-navigation-button {
    width: 0.62rem;
    height: 0.62rem;
    padding: 0;
    border: 1px solid var(--red);
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    opacity: 0.45;
    transition: background-color 300ms ease, opacity 300ms ease, transform 300ms ease;
}

.content-navigation-button:hover,
.content-navigation-button:focus-visible,
.content-navigation-button.is-active {
    opacity: 1;
}

.content-navigation-button:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 0.3rem;
}

.content-navigation-button.is-active {
    background: var(--red);
    transform: scale(1.14);
}

.content-scroll-rotation {
    --content-scroll-gap: 2rem;
    --content-scroll-height: 13rem;
    --content-scroll-cycle: 13rem;
    --content-scroll-duration: 60s;
    --content-scroll-delay: 0s;
    position: relative;
}

.content-scroll-viewport {
    position: relative;
    min-height: 13rem;
    height: var(--content-scroll-height);
    overflow: hidden;
    -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 82%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 82%, transparent 100%);
}

.content-scroll-track {
    display: grid;
    gap: var(--content-scroll-gap);
    width: 100%;
    animation: content-scroll-loop var(--content-scroll-duration) linear infinite;
    animation-delay: var(--content-scroll-delay);
    transform: translateY(var(--content-scroll-height));
    will-change: transform;
}

.content-scroll-sequence {
    display: grid;
    gap: var(--content-scroll-gap);
}

.content-scroll-card {
    width: 100%;
    margin: 0;
}

.content-scroll-card p {
    max-width: none;
    margin-bottom: 0;
}

.content-scroll-rotation-error {
    color: var(--muted);
}

@keyframes content-scroll-loop {
    from {
        transform: translateY(var(--content-scroll-height));
    }

    to {
        transform: translateY(calc(var(--content-scroll-height) - var(--content-scroll-cycle)));
    }
}

@media (prefers-reduced-motion: reduce) {
    .content-rotation.is-loaded .content-card,
    .content-navigation-button {
        transition: none;
    }

    .content-scroll-track {
        animation: none;
        transform: none;
        will-change: auto;
    }

    .content-scroll-sequence[aria-hidden="true"] {
        display: none;
    }
}

article h3,
.profile-text h3,
.legal-page h2 {
    margin: 0 0 0.7rem;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--red);
}

.legal-page h2 {
    text-align: left;
}

article p,
.narrow p {
    max-width: var(--measure);
    margin: 0 0 1.25rem;
    color: var(--muted);
}

.profile-layout {
    display: grid;
    grid-template-columns: 61.8fr 38.2fr;
    gap: clamp(1.75rem, 4vw, 3rem);
    align-items: center;
}

.profile-text p {
    max-width: var(--measure);
    margin: 0 0 1.25rem;
    color: var(--muted);
}

.profile-photo {
    margin: 0;
    width: 50%;
    justify-self: end;
}

.profile-photo img {
    display: block;
    width: 100%;
    height: auto;
    border: 1px solid var(--line);
    filter: saturate(0.9);
}

.narrow {
    max-width: 820px;
}

.contact a,
.legal-page a {
    color: var(--red);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem calc(var(--phi-space) * var(--phi));
}

.contact-grid p:last-child {
    text-align: right;
}

.legal-page h1 {
    margin-top: 0;
    margin-bottom: 2.5rem;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 400;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
    color: var(--red);
}

.legal-page h2:not(:first-of-type) {
    margin-top: 2rem;
}

.site-footer {
    margin-top: clamp(2rem, 6vw, 5rem);
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, var(--soft), #efebe6);
    color: var(--muted);
    font-size: 0.88rem;
}

.footer-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}

.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.75rem;
    margin-bottom: 0.45rem;
}

.footer-nav [aria-current="page"] {
    color: var(--red);
}

.copyright {
    margin: 0;
    color: var(--muted);
}

@media (max-width: 760px) {
    body {
        font-size: 17px;
    }

    .site-header {
        padding: 1rem 1.25rem;
        align-items: flex-start;
        flex-direction: column;
        gap: 1rem;
    }

    .logo-link {
        width: 100%;
    }

    .text-logo {
        grid-template-columns: 1fr;
        row-gap: 0.75rem;
        column-gap: 0;
    }

    .hero {
        text-align: left;
    }

    .claim,
    .intro {
        width: 100%;
        margin-left: 0;
    }

    .hero-intro-rotation p {
        width: 100%;
    }

    .services-grid,
    .content-rotation {
        grid-template-columns: 1fr;
        gap: 2.25rem;
    }

    .content-slot {
        min-height: 17rem;
    }

    .content-scroll-rotation {
        --content-scroll-height: 17rem;
    }

    .profile-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .profile-photo {
        max-width: 24rem;
        justify-self: start;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .contact-grid p:last-child {
        text-align: left;
    }
}