:root {
  color-scheme: dark;
  --header-height: 76px;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.78);
  --glass: rgba(15, 20, 28, 0.48);
  --glass-strong: rgba(15, 20, 28, 0.64);
  --accent: #7dd3fc;
  --accent-dark: #2563eb;
  --border: rgba(255, 255, 255, 0.22);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  font-family: "Manrope", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url("assets/fonts/manrope-latin.woff2") format("woff2");
}


* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
}

html.section-navigation-active {
  scroll-behavior: auto;
  scroll-snap-type: none;
  overflow: hidden;
  overscroll-behavior: none;
}

html.section-navigation-active .page-section {
  scroll-snap-align: none;
  scroll-snap-stop: normal;
}

body {
  margin: 0;
  background: #0d1118;
  color: var(--text);
  overflow-x: hidden;
}

.error-page {
  min-height: 100vh;
  background:
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.62)),
    url("assets/backgrounds/startseite-bg.jpg") center / cover no-repeat;
}

.error-layout {
  display: grid;
  min-height: 100vh;
  padding: 32px;
  place-items: center;
}

.error-content {
  text-align: center;
}

.error-content img {
  width: min(420px, 72vw);
  margin-bottom: 28px;
  opacity: 0.9;
  filter: drop-shadow(0 22px 42px rgba(0, 0, 0, 0.45));
}

body.menu-open {
  overflow: hidden;
}

body.lightbox-open {
  overflow: hidden;
}

.manuals-page {
  min-height: 100vh;
  background:
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.62)),
    url("assets/backgrounds/bauanleitungen-bg.jpg") center / cover fixed no-repeat;
}

.manuals-page .site-header {
  min-height: 72px;
}

.manuals-layout {
  padding: 100px clamp(18px, 4vw, 72px) 64px;
}

.manuals-hero {
  display: grid;
  place-items: center;
}

.manuals-content {
  width: min(1180px, 100%);
  min-width: 0;
  min-height: auto;
  padding: clamp(24px, 3vw, 42px);
  opacity: 1;
  transform: none;
}

.manuals-content > *,
.error-content > * {
  opacity: 1;
  transform: none;
}

.manuals-content h1 {
  max-width: 900px;
}

.manuals-tip {
  padding: 16px 18px;
  margin: 24px 0 0;
  color: #ffffff;
  background: rgba(125, 211, 252, 0.12);
  border: 1px solid rgba(125, 211, 252, 0.32);
  border-radius: 5px;
}

.manuals-panel {
  width: min(1180px, 100%);
  padding: clamp(22px, 3vw, 34px);
  margin: 0 auto;
  background: linear-gradient(145deg, var(--glass), rgba(255, 255, 255, 0.055));
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.manuals-toolbar {
  display: grid;
  gap: 18px;
}

.manuals-search {
  display: grid;
  gap: 8px;
  color: #ffffff;
  font-weight: 800;
}

.manuals-search input {
  width: 100%;
  min-height: 54px;
  padding: 0 16px;
  color: #ffffff;
  font: inherit;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  outline: none;
}

.manuals-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.15);
}

.manual-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.manual-filter {
  min-height: 42px;
  padding: 0 16px;
  color: #ffffff;
  font: inherit;
  font-weight: 850;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease, transform 200ms ease;
}

.manual-filter:hover,
.manual-filter.active {
  color: #07111f;
  background: var(--accent);
  transform: translateY(-2px);
}

.manual-count {
  margin: 20px 0;
  font-size: 0.95rem;
}

.manual-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.manual-card {
  display: grid;
  gap: 20px;
  min-height: 245px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
  align-content: space-between;
}

.manual-card[hidden] {
  display: none;
}

.manual-card:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(125, 211, 252, 0.42);
  transform: translateY(-5px);
}

.manual-card h2 {
  margin: 14px 0 10px;
  font-size: clamp(1.15rem, 1.45vw, 1.45rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.manual-card p {
  margin-bottom: 0;
  font-size: 0.98rem;
}

.manual-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  color: #07111f;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent);
  border-radius: 5px;
}

.manual-empty {
  padding: 28px;
  margin-top: 22px;
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
}

.manual-empty h2 {
  margin-bottom: 12px;
}

.manuals-page .button {
  width: fit-content;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: var(--header-height);
  padding: 18px clamp(20px, 5vw, 72px);
  background: linear-gradient(180deg, rgba(6, 8, 12, 0.76), rgba(6, 8, 12, 0));
  backdrop-filter: blur(10px);
}

.brand {
  display: grid;
  gap: 2px;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand small {
  color: var(--accent);
  font-size: clamp(0.62rem, 0.9vw, 0.78rem);
  font-weight: 750;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-transform: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 32px);
}

.main-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  font-weight: 650;
  transition: color 220ms ease;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--accent);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 220ms ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: #ffffff;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: #ffffff;
  border-radius: 999px;
  transition: transform 220ms ease, opacity 220ms ease;
}

.social-bar {
  position: fixed;
  top: 50%;
  right: 22px;
  z-index: 18;
  display: grid;
  gap: 10px;
  padding: 10px;
  background: rgba(15, 20, 28, 0.52);
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  transform: translateY(-50%);
  backdrop-filter: blur(14px);
}

.social-bar a {
  display: grid;
  width: 42px;
  height: 42px;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
  transition: color 220ms ease, background 220ms ease, transform 220ms ease;
  place-items: center;
}

.social-bar a:hover,
.social-bar a:focus-visible {
  color: #07111f;
  background: var(--accent);
  transform: translateX(-4px);
}

.social-bar svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.page-section {
  position: relative;
  --parallax-offset: 0px;
  display: grid;
  min-height: 100vh;
  padding: calc(var(--header-height) + 44px) clamp(20px, 6vw, 96px) 56px;
  overflow: hidden;
  isolation: isolate;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  place-items: center;
  opacity: 0.9;
  transition: opacity 1400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.page-section::before {
  position: absolute;
  inset: -10vh 0;
  z-index: -3;
  content: "";
  background-position: center;
  background-color: #070b10;
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.78;
  filter: saturate(0.92);
  transform: translate3d(0, var(--parallax-offset), 0) scale(1.08);
  transition: opacity 1600ms ease, transform 2200ms cubic-bezier(0.16, 1, 0.3, 1), filter 1800ms ease;
  will-change: transform;
}

.page-section::after {
  position: absolute;
  inset: 0;
  z-index: -2;
  content: "";
  background:
    radial-gradient(circle at 18% 26%, rgba(217, 164, 65, 0.28), transparent 34%),
    linear-gradient(115deg, rgba(5, 8, 14, 0.78), rgba(5, 8, 14, 0.28) 48%, rgba(5, 8, 14, 0.72));
}

.hero-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.descriptions-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.faq-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.contact-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.imprint-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.products-section::after {
  background:
    radial-gradient(circle at 20% 24%, rgba(125, 211, 252, 0.18), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.56) 45%, rgba(3, 8, 14, 0.74)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.4), rgba(3, 8, 14, 0.4));
}

.calculator-section::after {
  background:
    radial-gradient(circle at 20% 24%, rgba(125, 211, 252, 0.18), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.56) 45%, rgba(3, 8, 14, 0.74)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.4), rgba(3, 8, 14, 0.4));
}

.page-section.is-visible::before {
  opacity: 1;
  filter: saturate(1.08) contrast(1.05);
  transform: translate3d(0, var(--parallax-offset), 0) scale(1.02);
}

.page-section.is-visible {
  opacity: 1;
}

.hero-section::before {
  background-image: url("assets/backgrounds/startseite-bg.jpg");
  background-position: center calc(50% + 100px);
}

.products-section::before {
  background-image: url("assets/backgrounds/produkte-bg.jpg");
  background-position: center calc(50% + 40px);
}

.calculator-section::before {
  background-image: url("assets/backgrounds/rechner-bg.png");
  background-position: center calc(50% + 100px);
}

.descriptions-section::before {
  background-image: url("assets/backgrounds/bauanleitungen-bg.jpg");
  background-position: center calc(50% + 100px);
}

.faq-section::before {
  background-image: url("assets/backgrounds/faq-bg.jpg");
  background-position: center calc(50% + 100px);
}

.contact-section::before {
  background-image: url("assets/backgrounds/kontakt-bg.jpg");
  background-position: center calc(50% + 100px);
}

.imprint-section::before {
  background-image: url("assets/backgrounds/impressum-bg.jpg");
  background-position: center calc(50% + 100px);
}

.section-content {
  width: 70vw;
  min-width: 900px;
  min-height: clamp(420px, 58vh, 620px);
  padding: clamp(34px, 5vw, 72px);
  background: linear-gradient(145deg, var(--glass), rgba(255, 255, 255, 0.055));
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  opacity: 0;
  transform: translateY(42px) scale(0.97);
  transition: opacity 3300ms ease, transform 3500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.page-section.is-visible .section-content {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.section-content > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 2900ms ease, transform 3050ms cubic-bezier(0.16, 1, 0.3, 1);
}

.page-section.is-visible .section-content > * {
  opacity: 1;
  transform: translateY(0);
}

.page-section.is-visible .section-content > *:nth-child(1) {
  transition-delay: 120ms;
}

.page-section.is-visible .section-content > *:nth-child(2) {
  transition-delay: 220ms;
}

.page-section.is-visible .section-content > *:nth-child(3) {
  transition-delay: 320ms;
}

.page-section.is-visible .section-content > *:nth-child(4) {
  transition-delay: 420ms;
}

.page-section.is-visible .section-content > *:nth-child(5) {
  transition-delay: 520ms;
}

.section-content.wide {
  width: 70vw;
}

.hero-section .section-content {
  display: grid;
  align-items: center;
}

.hero-content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.72fr);
  gap: clamp(24px, 4vw, 58px);
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-logo-wrap {
  display: grid;
  align-items: center;
  justify-items: end;
}

.hero-logo-wrap img {
  width: min(100%, 390px);
  max-height: 330px;
  object-fit: contain;
  opacity: 0.88;
  filter: drop-shadow(0 20px 38px rgba(0, 0, 0, 0.42));
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

h1,
h2 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(2rem, 4.8vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

h2 {
  font-size: clamp(1.8rem, 3.8vw, 3.25rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.3rem;
}

p,
li,
address,
input,
textarea {
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.7;
}

address {
  margin-bottom: 24px;
  font-style: normal;
}

.imprint-section .section-content {
  max-height: 72vh;
  overflow: auto;
  scrollbar-color: var(--accent) rgba(255, 255, 255, 0.12);
  scrollbar-width: thin;
}

.legal-copy {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.legal-copy h3 {
  margin: 22px 0 0;
  color: #ffffff;
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
}

.legal-copy p {
  margin-bottom: 0;
  font-size: clamp(0.88rem, 1vw, 1rem);
  line-height: 1.65;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  color: #ffffff;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 5px;
  cursor: pointer;
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-color: rgba(255, 255, 255, 0.18);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.1);
}

.product-intro {
  max-width: 760px;
  margin-bottom: 28px;
}

.inline-link {
  color: var(--accent);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.product-gallery {
  display: flex;
  gap: 18px;
  max-width: 100%;
  padding: 4px 10px 14px 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-color: var(--accent) rgba(255, 255, 255, 0.12);
  scrollbar-width: thin;
  scroll-snap-type: x proximity;
}

.product-gallery-item {
  display: grid;
  flex: 0 0 min(360px, 82vw);
  gap: 16px;
  align-content: start;
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
  scroll-snap-align: start;
  transition: transform 240ms ease, background 240ms ease;
}

.product-gallery-item:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-6px);
}

.product-image-button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  background: transparent;
  border: 0;
  border-radius: 5px;
  cursor: zoom-in;
}

.product-gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 5px;
  filter: contrast(1.05) saturate(0.95);
  transition: transform 260ms ease, filter 260ms ease;
}

.product-image-button:hover img,
.product-image-button:focus-visible img {
  filter: contrast(1.08) saturate(1);
  transform: scale(1.04);
}

.scale-info {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  padding: clamp(18px, 4vw, 56px);
  background: rgba(2, 6, 12, 0.86);
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms ease;
  backdrop-filter: blur(18px);
  touch-action: none;
  place-items: center;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  width: min(1180px, 94vw);
  margin: 0;
  transform: translateY(18px) scale(0.98);
  transition: transform 260ms ease;
  user-select: none;
  -webkit-user-select: none;
}

.lightbox.is-open .lightbox-content {
  transform: translateY(0) scale(1);
}

.lightbox-content img {
  display: block;
  width: 100%;
  max-height: 78vh;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.55);
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
}

.lightbox-content figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  color: #ffffff;
}

.lightbox-content span {
  color: var(--accent);
  font-weight: 850;
  text-transform: uppercase;
}

.lightbox-close {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 81;
  display: grid;
  width: 46px;
  height: 46px;
  color: #ffffff;
  font-size: 2rem;
  line-height: 1;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  cursor: pointer;
  touch-action: manipulation;
  place-items: center;
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
  color: #07111f;
  background: var(--accent);
}

.lightbox-nav {
  position: fixed;
  top: 50%;
  z-index: 81;
  display: grid;
  width: 52px;
  height: 72px;
  color: #ffffff;
  font-size: 3rem;
  line-height: 1;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  cursor: pointer;
  transform: translateY(-50%);
  transition: color 200ms ease, background 200ms ease, transform 200ms ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  place-items: center;
}

.lightbox-nav:hover,
.lightbox-nav:focus-visible {
  color: #07111f;
  background: var(--accent);
  transform: translateY(-50%) scale(1.04);
}

.lightbox-prev {
  left: clamp(12px, 3vw, 34px);
}

.lightbox-next {
  right: clamp(12px, 3vw, 34px);
}

.feature-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.feature-list li {
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.faq-list details {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
}

.faq-list summary {
  padding: 16px 18px;
  color: #ffffff;
  font-weight: 850;
  cursor: pointer;
}

.faq-list p {
  padding: 0 18px 18px;
  margin-bottom: 0;
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
}

.faq-list .faq-warning {
  padding: 16px 18px;
  margin: 0 18px 18px;
  color: #ffffff;
  background: rgba(125, 211, 252, 0.12);
  border: 1px solid rgba(125, 211, 252, 0.32);
  border-radius: 5px;
}

.calculator-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.calculator-tab {
  min-height: 46px;
  padding: 0 18px;
  color: #ffffff;
  font: inherit;
  font-weight: 850;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 0;
  border-radius: 5px 5px 0 0;
  cursor: pointer;
}

.calculator-tab.active,
.calculator-tab:hover,
.calculator-tab:focus-visible {
  color: #07111f;
  background: var(--accent);
}

.calculator-panels {
  margin-top: 0;
}

.calculator-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
}

.calculator-panel[hidden] {
  display: none;
}

.calculator-card label {
  display: grid;
  gap: 8px;
  color: #ffffff;
  font-weight: 800;
}

.calculator-card input,
.calculator-card select,
.calculator-table-head select {
  min-height: 50px;
  padding: 0 14px;
  color: #ffffff;
  font: inherit;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  outline: none;
}

.calculator-card option,
.calculator-table-head option {
  color: #07111f;
  background: #ffffff;
}

.calculator-card input:focus,
.calculator-card select:focus,
.calculator-table-head select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.15);
}

.scale-factor-row,
.dimension-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

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

.calculator-result {
  display: block;
  padding: 18px;
  color: #07111f;
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  font-weight: 900;
  line-height: 1.45;
  background: var(--accent);
  border-radius: 5px;
}

.calculator-note {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.contact-copy {
  display: grid;
  gap: 10px;
  max-width: 820px;
  margin-top: 20px;
}

.contact-copy p {
  margin-bottom: 0;
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.contact-card {
  display: grid;
  gap: 8px;
  min-height: 132px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 5px;
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
  align-content: center;
}

.contact-card:hover,
.contact-card:focus-visible {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(125, 211, 252, 0.52);
  transform: translateY(-5px);
}

.contact-card span {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-card strong {
  color: #ffffff;
  font-size: clamp(1rem, 1.3vw, 1.25rem);
  line-height: 1.35;
}

.contact-note {
  padding: 18px 20px;
  margin: 26px 0 0;
  color: #ffffff;
  background: rgba(125, 211, 252, 0.12);
  border: 1px solid rgba(125, 211, 252, 0.32);
  border-radius: 5px;
}

.external-note {
  margin: 16px 0 0;
  font-size: clamp(0.9rem, 1vw, 1rem);
}

.privacy-section::after {
  background:
    radial-gradient(circle at 18% 28%, rgba(125, 211, 252, 0.2), transparent 34%),
    linear-gradient(105deg, rgba(3, 8, 14, 0.9), rgba(3, 8, 14, 0.58) 42%, rgba(3, 8, 14, 0.72)),
    linear-gradient(0deg, rgba(3, 8, 14, 0.38), rgba(3, 8, 14, 0.38));
}

.privacy-section::before {
  background-image: url("assets/backgrounds/datenschutz-bg.png");
  background-position: center calc(50% + 100px);
}

.privacy-section .section-content {
  max-height: 72vh;
  overflow: auto;
  scrollbar-color: var(--accent) rgba(255, 255, 255, 0.12);
  scrollbar-width: thin;
}

.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 30;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #ffffff);
  box-shadow: 0 0 18px rgba(217, 164, 65, 0.75);
}

@media (max-width: 860px) {
  .nav-toggle {
    z-index: 22;
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 21;
    width: 100vw;
    height: 100vh;
    min-height: 100dvh;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 18px;
    padding: 112px 24px 40px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: rgba(5, 8, 14, 0.92);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-18px);
    transition: opacity 240ms ease, transform 240ms ease;
    backdrop-filter: blur(18px);
  }

  .main-nav a {
    font-size: 1.35rem;
  }

  body.menu-open .main-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  body.menu-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  body.menu-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  body.menu-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .social-bar {
    top: auto;
    right: 50%;
    bottom: 18px;
    grid-auto-flow: column;
    transform: translateX(50%);
  }

  .social-bar a:hover,
  .social-bar a:focus-visible {
    transform: translateY(-4px);
  }

  .page-section {
    min-height: 100vh;
    padding-top: 110px;
    padding-bottom: 70px;
  }

  .section-content,
  .section-content.wide {
    width: calc(100vw - 40px);
    min-width: 0;
  }

  .hero-content-layout {
    grid-template-columns: 1fr;
  }

  .hero-logo-wrap {
    justify-items: start;
    order: -1;
  }

  .hero-logo-wrap img {
    width: min(72vw, 280px);
    max-height: 180px;
  }

  .contact-options {
    grid-template-columns: 1fr;
  }

  .scale-factor-row,
  .dimension-row {
    grid-template-columns: 1fr;
  }

  .product-gallery-item {
    flex-basis: 82vw;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 860px) {
  .manuals-layout {
    padding: 100px 20px 44px;
  }

  .manuals-nav {
    display: none;
  }

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

  .manual-card {
    min-height: auto;
  }

  .lightbox-nav {
    top: auto;
    bottom: 20px;
    width: 48px;
    height: 48px;
    font-size: 2.4rem;
    transform: none;
  }

  .lightbox-nav:hover,
  .lightbox-nav:focus-visible {
    transform: scale(1.04);
  }

  .lightbox-prev {
    left: 20px;
  }

  .lightbox-next {
    right: 20px;
  }
}

.manuals-page .manuals-layout {
  padding-top: 100px;
}

.manuals-page .section-content,
.manuals-page .section-content > * {
  opacity: 1;
  transform: none;
}

.manuals-page .manuals-content {
  min-height: 0;
  padding: 28px clamp(24px, 3vw, 42px);
}

.manuals-page .manuals-hero {
  margin: 0 auto;
}

.manuals-page .manuals-panel {
  margin-top: 18px;
}