@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Sora:wght@500;600;700&family=Source+Sans+3:wght@400;500;600;700&display=swap");

:root {
  --top-bar-height: 4.25rem;
  --bottom-bar-height: 3.6rem;
  --bar-background: rgba(41, 61, 73, 0.9);
  --top-bar-background: rgba(18, 33, 42, 0.94);
  --bar-border: rgba(255, 255, 255, 0.46);
  --bar-text: #f9fcff;
  --page-overlay: rgba(10, 19, 27, 0.48);
  --focus-color: #a4e6ff;
  --zone-background: rgba(6, 18, 26, 0.6);
  --zone-border: rgba(255, 255, 255, 0.22);
  --brand-deep-blue: #004e64;
  --brand-canopy-green: #2e7d32;
  --brand-sunray-amber: #ffca28;
  --brand-engineering-slate: #455a64;
  --font-display: "Sora", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-ui: "Source Sans 3", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-accent: "IBM Plex Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --fs-display-hero: clamp(1.85rem, 4.2vw, 3.2rem);
  --fs-h1: clamp(1.2rem, 3vw, 2rem);
  --fs-body: clamp(0.98rem, 1.2vw, 1.06rem);
  --fs-ui: clamp(0.84rem, 1.04vw, 0.94rem);
  --lh-display: 1.14;
  --lh-body: 1.64;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--bar-text);
  background: #05090d;
}

.page-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  isolation: isolate;
  overflow-x: hidden;
}

.landing-background {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(
      180deg,
      rgba(2, 8, 12, 0.66) 0%,
      rgba(3, 10, 15, 0.48) 24%,
      rgba(3, 10, 14, 0.3) 50%,
      rgba(3, 10, 14, 0.5) 76%,
      rgba(2, 8, 12, 0.7) 100%
    ),
    radial-gradient(circle at 50% 44%, rgba(8, 29, 39, 0.24), rgba(4, 13, 19, 0) 56%),
    url("../../assets/backgrounds/Hintergrundbild.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.landing-background::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      rgba(0, 78, 100, 0.16) 0%,
      rgba(10, 23, 31, 0.12) 42%,
      rgba(46, 125, 50, 0.1) 56%,
      rgba(0, 78, 100, 0.18) 100%
    );
  z-index: -1;
}

.fixed-bar {
  position: fixed;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-inline: max(1rem, env(safe-area-inset-left)) max(1rem, env(safe-area-inset-right));
  background: var(--bar-background);
  border-color: var(--bar-border);
  border-style: solid;
  backdrop-filter: blur(5px);
  z-index: 20;
}

.top-bar {
  min-height: var(--top-bar-height);
  top: 0;
  border-width: 0 0 1px;
  padding-top: max(0.4rem, env(safe-area-inset-top));
  padding-bottom: 0.4rem;
  background: var(--top-bar-background);
  justify-content: space-between;
}

.bottom-bar {
  position: static;
  left: auto;
  right: auto;
  min-height: var(--bottom-bar-height);
  border-width: 1px 0 0;
  padding-top: 0.2rem;
  padding-bottom: max(0.2rem, env(safe-area-inset-bottom));
  margin-top: auto;
  background: rgba(41, 61, 73, 0.78);
  border-color: rgba(255, 255, 255, 0.22);
}

.bar-brand {
  margin: 0;
  font-size: clamp(0.95rem, 1.7vw, 1.2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-icon {
  display: block;
  height: 3.4rem;
  width: auto;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.brand-link:hover,
.brand-link:focus-visible {
  opacity: 0.9;
  transform: translateY(-1px);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.hamburger-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.hamburger-trigger {
  display: inline-flex;
  flex-direction: column;
  gap: 0.18rem;
  align-items: center;
  justify-content: center;
  min-width: auto;
  min-height: auto;
  padding: 0.2rem 0.35rem;
  border-radius: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hamburger-trigger:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

.hamburger-trigger:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.hamburger-line {
  width: 1.05rem;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  display: block;
}

.hamburger-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  display: none;
  flex-direction: column;
  width: max-content;
  min-width: 0;
  padding: 0.35rem;
  border-radius: 0.65rem;
  background: rgba(19, 35, 45, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.35);
  z-index: 30;
}

.hamburger-menu::after {
  content: "";
  position: absolute;
  right: 0;
  top: 100%;
  width: 100%;
  height: 0.45rem;
}

.hamburger-menu:hover .hamburger-dropdown,
.hamburger-menu:focus-within .hamburger-dropdown {
  display: flex;
}

.hamburger-link {
  color: var(--bar-text);
  text-decoration: none;
  border-radius: 0.5rem;
  padding: 0.5rem 0.6rem;
  font-weight: 600;
  font-size: var(--fs-ui);
  font-family: var(--font-ui);
  white-space: nowrap;
}

.hamburger-link:hover,
.hamburger-link:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  outline: none;
}

.bar-links {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.bar-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  color: var(--bar-text);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--fs-ui);
  font-family: var(--font-ui);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.social-icon-link {
  padding: 0.15rem;
  min-width: auto;
  min-height: auto;
  background: transparent;
  border: 0;
  border-radius: 0;
}

.social-icon {
  width: 1.2rem;
  height: 1.2rem;
  display: block;
  filter: brightness(0) invert(1);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.social-icon-link:hover,
.social-icon-link:focus-visible {
  background: transparent;
  border-color: transparent;
}

.bar-link:hover,
.bar-link:focus-visible {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.36);
  opacity: 0.9;
  transform: translateY(-1px);
}

.bar-link:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

.bar-link[aria-current="page"] {
  background: rgba(164, 230, 255, 0.2);
  border-color: rgba(164, 230, 255, 0.6);
}

.top-bar .bar-link {
  min-width: auto;
  min-height: auto;
  padding: 0.2rem 0.3rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: var(--fs-ui);
  letter-spacing: 0.01em;
}

.top-bar .bar-link:hover,
.top-bar .bar-link:focus-visible {
  background: transparent;
  border-color: transparent;
  opacity: 0.85;
}

.top-bar .bar-link[aria-current="page"] {
  background: transparent;
  border-color: transparent;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.24em;
  text-decoration-color: rgba(255, 202, 40, 0.92);
}

.top-primary-nav {
  gap: 0.7rem;
}

.top-primary-link {
  font-weight: 650;
  color: rgba(249, 252, 255, 0.96);
}

.top-secondary-link {
  font-weight: 500;
  color: rgba(249, 252, 255, 0.72);
  font-size: clamp(0.79rem, 0.95vw, 0.88rem);
}

.top-secondary-link:hover,
.top-secondary-link:focus-visible {
  color: rgba(249, 252, 255, 0.9);
}

.top-bar .hamburger-trigger {
  padding: 0.22rem 0.3rem;
  border-radius: 0.45rem;
}

.top-bar .hamburger-trigger:hover,
.top-bar .hamburger-trigger:focus-visible {
  background: rgba(255, 255, 255, 0.12);
}

.bottom-bar .bar-link.footer-plain-link {
  padding: 0.2rem 0.35rem;
  min-width: auto;
  min-height: auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: clamp(0.82rem, 0.98vw, 0.9rem);
  font-weight: 500;
  font-family: var(--font-ui);
  color: rgba(249, 252, 255, 0.82);
}

.bottom-bar .bar-link.footer-plain-link:hover,
.bottom-bar .bar-link.footer-plain-link:focus-visible,
.bottom-bar .bar-link.footer-plain-link[aria-current="page"] {
  background: transparent;
  border-color: transparent;
  opacity: 1;
  transform: none;
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.24em;
  text-decoration-color: rgba(249, 252, 255, 0.9);
}

.bottom-bar .social-icon {
  width: 1.02rem;
  height: 1.02rem;
  opacity: 0.74;
}

.bottom-bar .social-icon-link:hover,
.bottom-bar .social-icon-link:focus-visible {
  opacity: 1;
  transform: none;
}

.bottom-bar .social-icon-link:hover .social-icon,
.bottom-bar .social-icon-link:focus-visible .social-icon {
  opacity: 0.92;
  transform: none;
}

.social-icon-link:hover .social-icon,
.social-icon-link:focus-visible .social-icon {
  opacity: 0.82;
  transform: translateY(-1px);
}

.bottom-bar {
  justify-content: center;
}

.bottom-bar .bar-links {
  width: 100%;
  justify-content: center;
}

.content-zone {
  position: relative;
  z-index: 1;
  flex: 1;
  padding-top: calc(var(--top-bar-height) + env(safe-area-inset-top) + 1.25rem);
  padding-bottom: 1.25rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.landing-flow {
  width: min(94vw, 1160px);
}

.zone-panel {
  width: min(90vw, 720px);
  margin-top: clamp(1.25rem, 5vh, 4rem);
  padding: clamp(1rem, 3vw, 1.8rem);
  border-radius: 1rem;
  background: var(--zone-background);
  border: 1px solid var(--zone-border);
}

.zone-title {
  margin: 0 0 0.7rem;
  font-size: var(--fs-h1);
  line-height: 1.2;
  font-family: var(--font-display);
}

.landing-panel-logo {
  display: block;
  width: clamp(130px, 20vw, 220px);
  height: auto;
  margin: 0 auto 0.95rem;
}

.landing-panel-logo-fallback {
  display: none;
}

.landing-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(1rem, 2.2vw, 2rem);
  align-items: start;
}

.landing-hero-copy {
  max-width: 66ch;
}

.landing-hero-brand {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: clamp(0.1rem, 0.8vw, 0.35rem);
}

.landing-hero-brand .landing-panel-logo {
  width: clamp(170px, 23vw, 300px);
  margin: 0;
}

.zone-copy {
  margin: 0 0 0.8rem;
  line-height: var(--lh-body);
  font-size: var(--fs-body);
  max-width: 60ch;
}

.zone-copy:last-child {
  margin-bottom: 0;
}

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

.impressum-sheet {
  width: min(94vw, 960px);
  margin-top: clamp(1rem, 4vh, 2.8rem);
  padding: clamp(0.75rem, 2vw, 1.2rem);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(28, 38, 44, 0.16);
}

.impressum-sheet-head {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.45rem;
}

.impressum-sheet-logo {
  width: clamp(130px, 16vw, 200px);
  height: auto;
}

.impressum-sheet-body {
  max-height: min(68vh, 760px);
  overflow: auto;
  padding: 0.35rem 0.55rem 0.35rem 0.35rem;
}

.impressum-main-title,
.impressum-intro,
.impressum-section-title,
.impressum-paragraph {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-size: clamp(0.93rem, 1.2vw, 1rem);
  line-height: 1.52;
  color: #1b252a;
}

.impressum-main-title {
  margin-bottom: 0.55rem;
}

.impressum-intro {
  margin-bottom: 1rem;
}

.impressum-section-title {
  margin-top: 1rem;
  margin-bottom: 0.25rem;
}

.impressum-paragraph {
  margin-bottom: 0.55rem;
}

.cluster-tiles {
  margin-top: 1.35rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.cluster-tile {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 0.85rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.06);
  min-height: 220px;
}

.cluster-tile:hover,
.cluster-tile:focus-visible {
  border-color: rgba(164, 230, 255, 0.75);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.cluster-tile:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

.cluster-tile-image {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}

.cluster-tile-content {
  padding: 0.7rem 0.8rem 0.85rem;
}

.cluster-tile-title {
  margin: 0;
  font-size: 1rem;
  line-height: 1.2;
  font-weight: 700;
  font-family: "Sora", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.cluster-tile-cta {
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
  opacity: 0.92;
}

.landing-page .zone-panel.landing-panel {
  width: 100%;
  border-radius: 1.25rem;
  padding: clamp(1.2rem, 3.4vw, 2.2rem);
  background:
    radial-gradient(circle at 16% 14%, rgba(46, 125, 50, 0.2), transparent 45%),
    radial-gradient(circle at 84% 18%, rgba(0, 78, 100, 0.3), transparent 40%),
    rgba(9, 20, 28, 0.72);
}

.landing-hero-panel {
  margin-top: clamp(1.1rem, 4vh, 3rem);
  margin-bottom: 0;
  text-align: center;
}

.landing-cluster-stage {
  margin-top: clamp(0.35rem, 1.1vh, 0.7rem);
  padding-top: 0;
  border: 0;
  background: transparent;
  border-radius: 0;
}

.landing-kicker {
  margin: 0 0 0.52rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: clamp(0.73rem, 0.88vw, 0.8rem);
  font-family: var(--font-ui);
  font-weight: 650;
  color: rgba(245, 247, 250, 0.85);
}

.landing-page .zone-title {
  margin-bottom: 0.75rem;
  max-width: 19ch;
  font-size: var(--fs-display-hero);
  line-height: var(--lh-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-left: auto;
  margin-right: auto;
}

.landing-page .zone-copy {
  max-width: 82ch;
  margin-left: auto;
  margin-right: auto;
}

.landing-page .landing-project-copy {
  max-width: min(96%, 106ch);
}

.landing-now-next {
  margin-top: 0.22rem;
  padding: 0.6rem 0.75rem;
  border-left: 3px solid rgba(255, 202, 40, 0.9);
  background: rgba(4, 13, 18, 0.44);
  border-radius: 0.45rem;
  font-size: clamp(0.92rem, 1.05vw, 0.98rem);
  line-height: 1.56;
  text-align: center;
  max-width: min(98%, 120ch);
}

.landing-now-next-line {
  display: block;
  white-space: nowrap;
}

.landing-page .cluster-tiles {
  gap: 1.05rem;
}

.landing-page .cluster-tile {
  position: relative;
  min-height: 280px;
  border: 1px solid rgba(245, 247, 250, 0.26);
  background: rgba(11, 22, 28, 0.76);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.landing-page .cluster-tile:hover,
.landing-page .cluster-tile:focus-visible {
  transform: translateY(-3px);
}

.landing-page .cluster-tile-a {
  border-color: rgba(46, 125, 50, 0.7);
  box-shadow: inset 0 0 0 1px rgba(46, 125, 50, 0.18);
}

.landing-page .cluster-tile-b {
  border-color: rgba(69, 90, 100, 0.76);
}

.landing-page .cluster-tile-c {
  border-color: rgba(255, 202, 40, 0.62);
}

.landing-page .cluster-tile-content {
  padding: 0.85rem 0.9rem 1rem;
}

.landing-page .cluster-tile-meta {
  margin: 0.38rem 0 0;
  color: rgba(245, 247, 250, 0.78);
  font-size: clamp(0.74rem, 0.88vw, 0.8rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-ui);
  font-weight: 600;
}

.landing-page .cluster-tile-cta {
  margin-top: 0.45rem;
  font-size: clamp(0.9rem, 1.02vw, 0.98rem);
  font-weight: 650;
  font-family: var(--font-ui);
}

.landing-page .cluster-tile-segments {
  margin: 0.55rem 0 0;
  font-size: clamp(0.8rem, 0.95vw, 0.87rem);
  line-height: 1.42;
  color: rgba(245, 247, 250, 0.84);
}

@media (max-width: 900px) {
  .landing-background {
    background-position: center 24%;
  }

  .bar-links {
    justify-content: center;
  }

  .top-bar {
    padding-bottom: 0.28rem;
  }

  .top-bar-actions {
    gap: 0.4rem;
  }

  .top-secondary-link {
    display: none;
  }

  .hamburger-dropdown {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }

  .bottom-bar {
    justify-content: center;
    text-align: center;
  }

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

  .landing-page .zone-panel.landing-panel {
    width: 100%;
  }

  .landing-hero-grid {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .landing-hero-copy {
    max-width: 100%;
  }

  .landing-hero-brand {
    order: -1;
    justify-content: center;
    padding-top: 0;
    margin-bottom: 0.2rem;
  }

  .landing-now-next-line {
    white-space: normal;
  }
}

@media (max-width: 640px) {
  :root {
    --top-bar-height: 4.9rem;
    --bottom-bar-height: 6.5rem;
  }

  .landing-background {
    background-position: 62% 22%;
  }

  .brand-icon {
    height: 3rem;
  }

  .top-primary-nav .bar-link {
    font-size: 0.82rem;
    padding-inline: 0.24rem;
  }

  .landing-page .zone-title {
    max-width: 15ch;
    font-size: clamp(1.62rem, 8.4vw, 2.2rem);
  }

  .landing-hero-brand .landing-panel-logo {
    width: clamp(145px, 46vw, 220px);
  }

  .landing-kicker {
    letter-spacing: 0.07em;
  }

  .cluster-tiles {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bar-link,
  .brand-link,
  .hamburger-trigger,
  .social-icon {
    transition: none;
  }

  .landing-page .cluster-tile {
    transition: none;
  }
}