:root {
    --red: #cb2031;
    --blue: #0788c9;
    --dark: #303030;
    --text: #252525;
    --light: #f5f5f5;
    --border: #d7d7d7;
    --radius: 28px;

    --content-width: 1320px;
    --content-padding: 28px;

    --section-space-large: 6rem;
    --section-space-medium: 5rem;
    --section-space-mobile: 3.5rem;

    --heading-width-large: 48rem;
    --heading-width-medium: 42rem;

    --card-radius: 0.875rem;
    --card-border: 1px solid #dedede;
    --card-shadow: 0 0.5rem 1.75rem rgba(0, 0, 0, 0.05);
}

/* ==========================================================
   Basis
========================================================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

#teilnahme {
    scroll-margin-top: 7rem;
}

body {
    margin: 0;
    color: var(--text);
    background: #fff;
    font: 16px/1.55 var(--font-body);
}

h1,
h2,
h3 {
    font-family: var(--font-heading);
    line-height: 1.16;
}

a {
    color: inherit;
}

.skip-link {
    position: absolute;
    left: -9999px;
}

.skip-link:focus {
    top: 1rem;
    left: 1rem;
    z-index: 999;
    padding: 0.75rem;
    background: #fff;
}

/* ==========================================================
   Hilfsklassen
========================================================== */

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.content-container {
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding-right: var(--content-padding);
    padding-left: var(--content-padding);
}

.content-container--page {
    padding-top: 40px;
    padding-bottom: 80px;
}

/* ==========================================================
   Header
========================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
}

.header-inner {
    display: flex;
    align-items: center;
    width: 100%;
    max-width: var(--content-width);
    min-height: 94px;
    margin: 0 auto;
    padding-right: var(--content-padding);
    padding-left: var(--content-padding);
    gap: 35px;
}

.brand img {
    display: block;
    width: 168px;
    height: auto;
}

.main-navigation {
    display: flex;
    align-items: center;
    margin-left: auto;
    gap: 26px;
}

.main-navigation ul {
    display: flex;
    gap: 24px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-navigation a {
    font-size: 0.9rem;
    text-decoration: none;
}

.main-navigation li.is-active a {
    font-weight: 700;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-links a {
    color: #777;
    text-decoration: none;
}

.nav-toggle {
    display: none;
    margin-left: auto;
    background: none;
    border: 0;
}

.nav-toggle span {
    display: block;
    width: 27px;
    height: 2px;
    margin: 6px;
    background: #222;
}

/* ==========================================================
   Buttons
========================================================== */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.72rem 1.35rem;
    color: #fff !important;
    background: var(--blue);
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
}

.button--small {
    padding: 0.55rem 1rem;
    font-size: 0.82rem;
}

/* ==========================================================
   Hero
========================================================== */

.hero {
    position: relative;
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto 54px;
    padding-right: var(--content-padding);
    padding-left: var(--content-padding);
}

.hero__media {
    height: 470px;
    background:
            linear-gradient(105deg, rgba(0, 0, 0, 0.35), rgba(203, 32, 49, 0.25)),
            url("../Images/Content/hero-placeholder.svg") center / cover no-repeat;
    border-radius: 32px 32px 0 0;
}

.hero__headline {
    position: absolute;
    bottom: 105px;
    left: 70px;
    max-width: 650px;
}

.hero__headline h1 {
    display: inline;
    background: #fff;
    box-shadow:
            12px 0 0 #fff,
            -12px 0 0 #fff;
    font-size: 2.05rem;
    line-height: 1.25;
}

.hero__bar {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 66px;
    gap: 170px;
    color: #fff;
    background: var(--red);
    border-radius: 0 0 32px 32px;
    font-weight: 700;
}

/* ==========================================================
   Demo- und Grundelemente
========================================================== */

.demo-section {
    padding: 38px 0;
}

.demo-section h2 {
    font-size: 1.75rem;
}

.two-columns,
.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
}

.text-link {
    display: inline-flex;
    margin-top: 15px;
    color: var(--blue);
    font-weight: 700;
    text-decoration: none;
}

.text-link::before {
    margin-right: 10px;
    content: "→";
}

.demo-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 260px;
    border-radius: 32px;
    font: 700 2rem var(--font-heading);
}

.demo-card--accent {
    color: #111;
    background: linear-gradient(135deg, #d8ea00, #5eb544);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.media-card {
    display: flex;
    align-items: flex-end;
    min-height: 210px;
    padding: 24px;
    color: #fff;
    background: linear-gradient(135deg, #111, #777);
    border-radius: 22px;
    font-weight: 700;
}

.icon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
}

.icon-grid > div {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    min-height: 150px;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 28px;
    text-align: center;
}

/* ==========================================================
   Footer
========================================================== */

.site-footer {
    margin-top: 0;
    color: #fff;
    background: var(--dark);
}

/* ==========================================================
   Footer: Hauptbereich
========================================================== */

.footer-inner {
    display: grid;
    grid-template-columns:
        minmax(0, 1.25fr)
        minmax(10rem, 0.6fr)
        minmax(18rem, 1.15fr);
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 3.75rem var(--content-padding) 3rem;
    gap: clamp(2.5rem, 6vw, 6rem);
}

.footer-heading {
    margin: 0 0 1rem;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12rem;
    line-height: 1.4;
    text-transform: uppercase;
}

/* ==========================================================
   Footer: Logo und Beschreibung
========================================================== */

.footer-brand {
    max-width: 28rem;
}

.footer-brand__logo {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.875rem;
}

.footer-brand__logo img {
    display: block;
    width: 8.5rem;
    height: auto;
}

.footer-brand__claim {
    padding-left: 0.875rem;
    color: #fff;
    border-left: 1px solid rgba(255, 255, 255, 0.35);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.4;
}

.footer-brand__description {
    max-width: 30rem;
    margin: 1.5rem 0 0;
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.footer-brand__copyright {
    margin: 1rem 0 0;
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.6875rem;
    line-height: 1.5;
}

/* ==========================================================
   Footer: Navigation
========================================================== */

.footer-navigation__list {
    display: grid;
    gap: 0.65rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-navigation__item {
    margin: 0;
}

.footer-navigation__item a {
    display: inline-flex;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.8125rem;
    line-height: 1.45;
    text-decoration: none;
    transition: color 150ms ease;
}

.footer-navigation__item a:hover,
.footer-navigation__item a:focus-visible,
.footer-navigation__item a.is-active {
    color: #fff;
}

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

/* ==========================================================
   Footer: Newsletter
========================================================== */

.footer-newsletter {
    max-width: 31rem;
}

.footer-newsletter__text {
    margin: 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.8125rem;
    line-height: 1.65;
}

.footer-newsletter__form {
    margin-top: 1.25rem;
}

.footer-newsletter__field {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.5rem;
}

.footer-newsletter__field input {
    width: 100%;
    min-width: 0;
    min-height: 2.75rem;
    padding: 0.7rem 0.9rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 0.25rem;
    font: inherit;
    font-size: 0.75rem;
}

.footer-newsletter__field input::placeholder {
    color: rgba(255, 255, 255, 0.55);
}

.footer-newsletter__field input:hover {
    border-color: rgba(255, 255, 255, 0.45);
}

.footer-newsletter__field input:focus {
    border-color: #fff;
    box-shadow: 0 0 0 0.1875rem rgba(255, 255, 255, 0.12);
    outline: none;
}

.footer-newsletter__field button {
    min-height: 2.75rem;
    padding: 0.7rem 1.15rem;
    color: #fff;
    background: var(--red);
    border: 1px solid var(--red);
    border-radius: 0.25rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.75rem;
    font-weight: 700;
    transition:
            background-color 150ms ease,
            border-color 150ms ease;
}

.footer-newsletter__field button:hover,
.footer-newsletter__field button:focus-visible {
    background: #ad1928;
    border-color: #ad1928;
}

.footer-newsletter__field button:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 0.2rem;
}

/* ==========================================================
   Footer: Unterer Bereich
========================================================== */

.footer-bottom {
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding-right: var(--content-padding);
    padding-left: var(--content-padding);
}

.footer-bottom__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 4rem;
    padding: 1rem 0;
    gap: 2rem;
    color: rgba(255, 255, 255, 0.48);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 0.6875rem;
}

.footer-bottom__inner nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.footer-bottom__inner a {
    color: rgba(255, 255, 255, 0.62);
    text-decoration: none;
}

.footer-bottom__inner a:hover,
.footer-bottom__inner a:focus-visible {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 0.2rem;
}

/* ==========================================================
   Tablet
========================================================== */

@media (max-width: 900px) {
    .header-inner {
        min-height: 72px;
    }

    .nav-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: 72px;
        right: 0;
        left: 0;
        display: none;
        align-items: flex-start;
        flex-direction: column;
        padding: 24px;
        background: #fff;
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
    }

    .main-navigation.is-open {
        display: flex;
    }

    .main-navigation ul {
        flex-direction: column;
    }

    .hero__media {
        height: 310px;
    }

    .hero__headline {
        right: 50px;
        bottom: 92px;
        left: 55px;
    }

    .hero__headline h1 {
        font-size: 1.45rem;
    }

    .hero__bar {
        gap: 45px;
        font-size: 0.85rem;
    }

    .two-columns,
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

    .footer-inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 2.75rem 3rem;
    }

    .footer-brand {
        grid-column: 1 / -1;
        max-width: 38rem;
    }

    .footer-bottom__inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* ==========================================================
   Mobil
========================================================== */

@media (max-width: 560px) {
    :root {
        --content-padding: 15px;
    }

    .hero__media {
        height: 240px;
    }

    .hero__headline {
        right: 30px;
        left: 34px;
    }

    .hero__headline h1 {
        font-size: 1.1rem;
    }

    .hero__bar {
        justify-content: space-around;
        gap: 5px;
    }

    .card-grid,
    .icon-grid {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        padding-top: 3rem;
        padding-bottom: 2.5rem;
        gap: 2.5rem;
    }

    .footer-brand {
        grid-column: auto;
    }

    .footer-brand__logo {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-brand__claim {
        padding-top: 0.5rem;
        padding-left: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.35);
        border-left: 0;
    }

    .footer-newsletter__field {
        grid-template-columns: 1fr;
    }

    .footer-newsletter__field button {
        width: 100%;
    }
}


/* ==========================================================
   Section Divider
========================================================== */

.section-divider {
    position: relative;
    width: 100%;
    margin: 5.5rem 0;
}

.section-divider::before {
    content: "";
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-primary, #c12030);
}

.section-divider::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    background: var(--color-primary, #c12030);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

@media (max-width: 768px) {

    .section-divider {
        margin: 4rem 0;
    }

}

/* Finetuning */

.study-hero__title {
    max-width: var(--heading-width-large);
    text-wrap: balance;
}

.study-hero--press .study-hero__title {
    max-width: 52rem;
}

.card-grid-section__title,
.process-section__title,
.participants-section__title,
.faq-section__title,
.key-facts-section__title,
.contact-downloads-section__title,
.press-releases-section__title,
.participation-section__title,
.reality-gap-section__title {
    max-width: var(--heading-width-medium);
    text-wrap: balance;
}

/* ==========================================================
   Einheitliche Section-Abstände
========================================================== */

.card-grid-section,
.process-section,
.participation-section,
.participants-section,
.faq-section,
.key-facts-section,
.contact-downloads-section,
.press-releases-section {
    padding-top: var(--section-space-large);
    padding-bottom: var(--section-space-large);
}

@media (max-width: 48rem) {
    .card-grid-section,
    .reality-gap-section,
    .process-section,
    .participation-section,
    .participants-section,
    .faq-section,
    .key-facts-section,
    .contact-downloads-section,
    .press-releases-section {
        padding-top: var(--section-space-mobile);
        padding-bottom: var(--section-space-mobile);
    }
}

.info-card,
.process-step,
.press-release-card,
.press-contact-card,
.key-fact,
.participation-form-card {
    border: var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
}

/* ==========================================================
   Footer: Studienergebnisse abonnieren
========================================================== */

.footer-subscription {
    max-width: 31rem;
}

.footer-subscription__eyebrow {
    display: inline;
    margin: 0;
    color: #fff;
    background: var(--color-primary, #c12030);
    box-decoration-break: clone;
    padding: 0.08rem 0.18rem;
    font-family: var(--font-monospace, monospace);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.11rem;
    line-height: 1.5;
    text-transform: uppercase;
}

.footer-subscription__intro {
    max-width: 30rem;
    margin: 1rem 0 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9375rem;
    line-height: 1.55;
}

.footer-subscription__form {
    margin-top: 1.25rem;
}

.footer-subscription__fields {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.625rem;
}

.footer-subscription__email {
    min-width: 0;
}

.footer-subscription__email input {
    box-sizing: border-box;
    width: 100%;
    min-height: 2.75rem;
    padding: 0.7rem 0.875rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.3rem;
    font: inherit;
    font-size: 0.875rem;
    line-height: 1.4;
    transition:
            border-color 150ms ease,
            background-color 150ms ease,
            box-shadow 150ms ease;
}

.footer-subscription__email input::placeholder {
    color: rgba(255, 255, 255, 0.68);
}

.footer-subscription__email input:hover {
    border-color: rgba(255, 255, 255, 0.55);
}

.footer-subscription__email input:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    box-shadow: 0 0 0 0.1875rem rgba(255, 255, 255, 0.13);
    outline: none;
}

.footer-subscription__submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.65rem 1.25rem;
    color: #fff;
    background: var(--color-primary, #c12030);
    border: 1px solid var(--color-primary, #c12030);
    border-radius: 0.3rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.875rem;
    font-weight: 700;
    line-height: 1.3;
    transition:
            background-color 150ms ease,
            border-color 150ms ease;
}

.footer-subscription__submit:hover {
    background: #a91929;
    border-color: #a91929;
}

.footer-subscription__submit:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 0.2rem;
}

.footer-subscription__privacy {
    display: grid;
    grid-template-columns: 1.125rem minmax(0, 1fr);
    gap: 0.625rem;
    align-items: start;
    margin-top: 0.875rem;
}

.footer-subscription__privacy input {
    width: 1rem;
    height: 1rem;
    margin: 0.15rem 0 0;
    accent-color: var(--color-primary, #c12030);
}

.footer-subscription__privacy label {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.6875rem;
    line-height: 1.5;
}

.footer-subscription__privacy label span {
    color: #ff7a86;
}

.footer-subscription__privacy a {
    color: #fff;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.footer-subscription__privacy a:hover,
.footer-subscription__privacy a:focus-visible {
    text-decoration-thickness: 0.125rem;
}

.footer-subscription__error {
    display: block;
    margin-top: 0.5rem;
    color: #ff8993;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1.4;
}

/* Nur für Screenreader sichtbare Beschriftung */

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
}

/* ==========================================================
   Footerformular mobil
========================================================== */

@media (max-width: 48rem) {
    .footer-subscription {
        max-width: none;
    }

    .footer-subscription__fields {
        grid-template-columns: 1fr;
    }

    .footer-subscription__submit {
        width: 100%;
    }
}

.social-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: color .2s ease;
}

.social-link:hover {
    color: var(--color-primary);
}

.social-link .icon {
    width: 24px;
    height: 24px;
    display: block;
}

.social-link {
    color: #8b8b8b;
}

.social-link:hover {
    color: var(--color-primary);
}

/* ==========================================================
   Navigation: letzter Menüpunkt als CTA "Teilnehmen"
========================================================== */

.main-navigation ul > li:last-child > a {
   /* display: inline-flex; */
    align-items: center;
    justify-content: center;

    margin-left: 0.5rem;
    padding: 0.65rem 1.3rem;

    color: #fff !important;
    background: var(--color-primary, #cb2031);

    border-radius: 999px;

    font-weight: 700;
    text-decoration: none;

    transition:
            background-color 150ms ease,
            box-shadow 150ms ease,
            transform 150ms ease;
}

.main-navigation ul > li:last-child > a:hover,
.main-navigation ul > li:last-child > a:focus-visible {
    color: #fff !important;
    background: #a91929;

    box-shadow: 0 0.4rem 1rem rgba(203, 32, 49, 0.22);
    transform: translateY(-1px);
}

.main-navigation ul > li:last-child > a:focus-visible {
    outline: 2px solid #cb2031;
    outline-offset: 0.2rem;
}

/* Sprung zum Teilnahmeformular */

html {
    scroll-behavior: smooth;
}

#teilnahme {
    scroll-margin-top: 7rem;
}