/*
 * Grundlegende Gestaltungsvariablen in Deutsch kommentiert, damit Anpassungen leicht fallen.
 */
:root {
  --farbe-hintergrund: #f7f7fb;
  --farbe-hell: #ffffff;
  --farbe-akzent: #e63946;
  --farbe-akzent-hell: #fbe9eb;
  --farbe-text: #1f2933;
  --farbe-text-hell: #5b6470;
  --farbe-linie: #d5d9e2;
  --radius-klein: 0.8rem;
  --radius-gross: 1.6rem;
  --abstand-section: clamp(4rem, 6vw, 7rem);
  --max-breite: 1120px;
  --schrift-sans: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --schrift-serif: "Source Serif 4", "Times New Roman", serif;
  --schatten-leicht: 0 18px 45px rgba(31, 41, 51, 0.08);
  --schatten-weich: 0 10px 30px rgba(31, 41, 51, 0.08);
}

/* Allgemeine Grundformatierungen für Dokument und Grundraster */
* {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--schrift-sans);
  color: var(--farbe-text);
  background: var(--farbe-hintergrund);
  line-height: 1.6;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

p,
ul,
ol {
  margin: 0 0 1.25rem;
}

h1,
h2,
h3,
h4 {
  font-family: var(--schrift-serif);
  color: var(--farbe-text);
  margin: 0 0 1rem;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
}

h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}

h4 {
  font-size: 1.25rem;
}

/* Hilfsklasse für Screenreader-Texte */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Container begrenzt die Breite und sorgt für Luft zum Rand */
.container {
  width: min(100% - 2.5rem, var(--max-breite));
  margin: 0 auto;
}

/* Kopfbereich inklusive mobiler Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(213, 217, 226, 0.7);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.06em;
}

.site-header__brand-highlight {
  color: var(--farbe-akzent);
}

.site-header__cta {
  display: none;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  background: var(--farbe-akzent);
  color: #fff;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.site-header__cta:hover,
.site-header__cta:focus {
  transform: translateY(-2px);
  box-shadow: var(--schatten-leicht);
}

/* Navigation für große und kleine Bildschirme */
.site-nav {
  margin-left: auto;
}

.site-nav__toggle {
  background: transparent;
  border: 1px solid var(--farbe-linie);
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--farbe-text);
}

.site-nav__toggle-bar {
  width: 1.5rem;
  height: 2px;
  background: currentColor;
  position: relative;
  display: inline-block;
}

.site-nav__toggle-bar::before,
.site-nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform-origin: center;
}

.site-nav__toggle-bar::before {
  top: -6px;
}

.site-nav__toggle-bar::after {
  top: 6px;
}

.site-nav__list {
  list-style: none;
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  margin: 0;
  background: var(--farbe-hell);
  border-radius: var(--radius-klein);
  box-shadow: var(--schatten-weich);
  position: absolute;
  right: 1.25rem;
  top: calc(100% + 0.8rem);
}

.site-nav__list a {
  font-weight: 600;
  color: var(--farbe-text);
}

/* Aktiven Navigationspunkt hervorheben, damit Nutzer:innen sich orientieren können */
.site-nav__list a[aria-current="page"] {
  color: var(--farbe-akzent);
  position: relative;
}

.site-nav__list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 0.2rem;
  background: var(--farbe-akzent);
  border-radius: 999px;
}

.site-nav__list.is-open {
  display: flex;
}

/* Hero mit zweispaltigem Layout */
.hero {
  padding: clamp(5rem, 10vw, 9rem) 0 clamp(4rem, 8vw, 7rem);
  background: radial-gradient(circle at 20% 20%, #ffffff, #f2f4fc 65%);
}

.hero__grid {
  display: grid;
  gap: 3rem;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero__eyebrow {
  font-weight: 600;
  color: var(--farbe-akzent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: -0.3rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__facts {
  display: grid;
  gap: 1rem;
  margin: 1rem 0 0;
}

.hero__facts dt {
  font-family: var(--schrift-serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.hero__facts dd {
  margin: 0;
  color: var(--farbe-text-hell);
}

.hero__sidebar {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: 2rem;
  box-shadow: var(--schatten-leicht);
  align-self: start;
}

.hero__sidebar ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
  display: grid;
  gap: 0.8rem;
}

.hero__sidebar li::before {
  content: "•";
  color: var(--farbe-akzent);
  margin-right: 0.6rem;
}

.hero__download {
  font-weight: 600;
}

/* Layout für Unterseiten, damit Inhalte auf mehreren Seiten konsistent erscheinen */
.page-main {
  padding-top: clamp(3rem, 5vw, 4.5rem);
}

.page-hero {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.page-hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--farbe-akzent);
  margin-bottom: 0.75rem;
}

.page-hero h1 {
  margin-bottom: 1.25rem;
}

.page-hero__lead {
  font-size: 1.05rem;
  color: var(--farbe-text-hell);
  max-width: 62ch;
}

.content-section {
  padding: var(--abstand-section) 0;
}

.content-section--soft {
  background: linear-gradient(180deg, rgba(242, 244, 252, 0.35) 0%, rgba(242, 244, 252, 0.75) 100%);
}

.content-section__header {
  max-width: 720px;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.content-section__header h2 {
  margin-bottom: 0.75rem;
}

.content-section__lead {
  font-size: 1.05rem;
  color: var(--farbe-text-hell);
}

.content-grid {
  display: grid;
  gap: clamp(1.8rem, 3vw, 2.5rem);
}

.content-grid--two {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.content-grid--sidebar {
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  align-items: start;
}

.content-panel {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: clamp(2rem, 4vw, 2.6rem);
  box-shadow: var(--schatten-weich);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.content-panel h3 {
  margin-bottom: 0.5rem;
}

.highlight-box {
  border: 1px solid rgba(230, 57, 70, 0.2);
  background: rgba(230, 57, 70, 0.05);
}

.method-list {
  display: grid;
  gap: 1.75rem;
}

.method-list__item {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: clamp(1.6rem, 3vw, 2.2rem);
  box-shadow: var(--schatten-weich);
}

.method-list__title {
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.method-list__goal {
  font-size: 0.95rem;
  color: var(--farbe-text-hell);
  margin-top: 0.25rem;
}

.list-check {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.list-check li {
  position: relative;
  padding-left: 1.75rem;
}

.list-check li::before {
  content: "✔";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--farbe-akzent);
  font-weight: 700;
}

.module-grid {
  display: grid;
  gap: clamp(1.8rem, 3vw, 2.4rem);
}

.module {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: clamp(2rem, 4vw, 2.8rem);
  box-shadow: var(--schatten-weich);
  display: grid;
  gap: 1.25rem;
}

.module__title {
  font-size: clamp(1.4rem, 2.7vw, 1.75rem);
}

.module__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.module__list li::before {
  content: "•";
  color: var(--farbe-akzent);
  font-weight: 700;
  margin-right: 0.5rem;
  display: inline-block;
  line-height: 1.2;
}

.module__list li {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.module__list span {
  flex: 1;
}

.legal {
  padding: var(--abstand-section) 0;
}

.legal h2,
.legal h3,
.legal h4 {
  margin-top: 2.5rem;
}

.legal h2:first-child {
  margin-top: 0;
}

.legal p {
  margin-bottom: 1rem;
}

.legal ul {
  margin: 0 0 1rem 1.2rem;
}

.legal li {
  margin-bottom: 0.4rem;
}

.legal a {
  word-break: break-word;
}

.contact-card {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: clamp(2rem, 4vw, 2.6rem);
  box-shadow: var(--schatten-weich);
}

.contact-card__title {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
}

.contact-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.6rem;
}

.contact-card__list a {
  font-weight: 600;
}

/* Allgemeiner Abschnittsrahmen */
.section {
  padding: var(--abstand-section) 0;
}

.section--soft {
  background: linear-gradient(180deg, #f2f4fc 0%, rgba(242, 244, 252, 0.6) 100%);
}

.section--accent {
  background: var(--farbe-hell);
}

.section--cta {
  background: var(--farbe-akzent);
  color: #fff;
}

.section--cta h2,
.section--cta p,
.section--cta .section__eyebrow {
  color: inherit;
}

.section__stack {
  display: flex;
  flex-direction: column;
  gap: clamp(2.5rem, 6vw, 3.75rem);
}

.section__header {
  max-width: 720px;
}

.section__header--centered {
  text-align: center;
  margin: 0 auto;
}

.section__eyebrow {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--farbe-akzent);
  margin-bottom: 0.4rem;
}

.section__lead {
  font-size: 1.05rem;
  color: var(--farbe-text-hell);
}

.section__content {
  display: grid;
  gap: 2.5rem;
}

.section__content--split {
  gap: 3rem;
}

.section__text {
  font-size: 1rem;
  color: var(--farbe-text-hell);
}

/* Checkliste mit Häkchen-Symbolen */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}

.checklist li {
  position: relative;
  padding-left: 2.2rem;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--farbe-akzent-hell);
  border: 2px solid var(--farbe-akzent);
}

.checklist li::after {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.55rem;
  width: 0.4rem;
  height: 0.25rem;
  border: 2px solid var(--farbe-akzent);
  border-top: none;
  border-right: none;
  transform: rotate(-45deg);
}

/* Hervorgehobene Boxen für Downloads und Hinweise */
.highlight-box {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: 2rem;
  box-shadow: var(--schatten-weich);
  color: var(--farbe-text-hell);
}

.highlight-box p {
  margin-bottom: 1.5rem;
}

/* Button-Grundstil mit Varianten */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  border: none;
  background: var(--farbe-akzent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
  box-shadow: var(--schatten-weich);
}

.button--ghost {
  background: transparent;
  color: var(--farbe-akzent);
  border: 1px solid var(--farbe-akzent);
}

.button--ghost:hover,
.button--ghost:focus {
  background: var(--farbe-akzent-hell);
  box-shadow: none;
}

.button--full {
  width: 100%;
}

/* Kartendesign für Publikationen */
.card-grid {
  display: grid;
  gap: 2rem;
}

.card {
  background: var(--farbe-hell);
  border-radius: var(--radius-gross);
  padding: 2rem;
  box-shadow: var(--schatten-weich);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card__subtitle {
  font-weight: 600;
  color: var(--farbe-akzent);
  margin-top: -0.3rem;
}

.card__meta {
  font-size: 0.95rem;
  color: var(--farbe-text-hell);
  margin-bottom: -0.5rem;
}

.card__link {
  align-self: flex-start;
  font-weight: 600;
}

/* Feature-Karten für Leistungsfelder */
.feature-grid {
  display: grid;
  gap: 2rem;
}

.feature {
  background: #f9fafc;
  border-radius: var(--radius-gross);
  padding: 2.5rem;
  box-shadow: var(--schatten-leicht);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature__subtitle {
  font-weight: 600;
  color: var(--farbe-akzent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.feature__link {
  font-weight: 600;
}

/* Downloadliste mit klarer Typografie */
.download-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.download-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--farbe-hell);
  border-radius: var(--radius-klein);
  border: 1px solid rgba(213, 217, 226, 0.6);
  font-weight: 600;
  color: var(--farbe-text);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-list a::before {
  content: "⇩";
  font-size: 1.1rem;
  color: var(--farbe-akzent);
}

.download-list a:hover,
.download-list a:focus {
  transform: translateY(-2px);
  box-shadow: var(--schatten-leicht);
}

/* Kontaktformular übersichtlich gestalten */
.contact-form {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-gross);
  padding: clamp(2rem, 4vw, 3rem);
  backdrop-filter: blur(2px);
  display: grid;
  gap: 1.5rem;
}

.contact-form__row {
  display: grid;
  gap: 1.5rem;
}

.contact-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  color: inherit;
}

.contact-form__field span {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  border-radius: var(--radius-klein);
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 0.85rem 1rem;
  font-family: var(--schrift-sans);
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.15);
  color: inherit;
}

.contact-form textarea {
  resize: vertical;
  min-height: 160px;
}

.contact-form__checkbox {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.contact-form__checkbox input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--farbe-akzent);
}

/* Footer mit Meta-Links und Sprung nach oben */
.site-footer {
  background: #101828;
  color: rgba(255, 255, 255, 0.78);
  padding: 2.5rem 0;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  align-items: flex-start;
}

.site-footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-footer__links a,
.scroll-top {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

.scroll-top {
  margin-left: auto;
}

/* Medienabfragen für größere Bildschirme */
@media (min-width: 768px) {
  .site-header__cta {
    display: inline-flex;
  }

  .site-nav__toggle {
    display: none;
  }

  .site-nav__list {
    display: flex !important;
    position: static;
    flex-direction: row;
    gap: 1.75rem;
    box-shadow: none;
    padding: 0;
    background: transparent;
  }

  .hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: start;
  }

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

  .section__content--split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

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

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

  .content-grid--sidebar {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  }

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

  .module-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

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

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

  .site-footer__inner {
    flex-direction: row;
    align-items: center;
  }
}

/* Medienabfrage für sehr große Bildschirme */
@media (min-width: 1024px) {
  .hero__grid {
    gap: 4rem;
  }

  .section__stack {
    gap: clamp(3rem, 5vw, 4.5rem);
  }

  .section__lead {
    font-size: 1.15rem;
  }
}

/* Medienabfrage für sehr kleine Geräte, um Buttons und Navigation anzupassen */
@media (max-width: 480px) {
  .site-header__inner {
    align-items: stretch;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .download-list a {
    flex-wrap: wrap;
  }
}