/* ============================================================
   MARTIN BACHEM — styles.css
   One-Pager: Architecture · Technology · AI
   Farben: Schwarz / Weiß / Creme #f5f0e8
   Schrift: Helvetica Neue / Arial Black
   ============================================================ */


/* ============================================================
   0. DESIGN TOKENS
   ============================================================ */
:root {
  --white:      #ffffff;
  --black:      #000000;
  --cream:      #f5f0e8;
  --cream-dark: #ece6dc;
  --grey:       #666666;
  --grey-light: #999999;
  --line:       #ddd8d0;

  --font: 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --header-h:   112px;
  --pad-x:      clamp(1.5rem, 5vw, 5rem);
  --pad-section: clamp(5rem, 10vw, 10rem);
  --max-w:      1440px;
}


/* ============================================================
   1. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  opacity: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol { list-style: none; }
address { font-style: normal; }

:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 3px;
}

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


/* ============================================================
   2. INTRO OVERLAY
   ============================================================ */
.intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
background: #000000 !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.intro-overlay.is-fading {
  opacity: 0;
  pointer-events: none;
}

.intro-overlay.is-done {
  display: none;
}

.intro-overlay canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.intro-shape-info {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  text-align: center;
  z-index: 1;
  white-space: nowrap;
}

.intro-shape-name {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.2);
}

.intro-shape-hint {
  font-size: 0.625rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.1);
  margin-top: 0.35rem;
}


/* ============================================================
   3. HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: none;
  box-shadow: none;
  padding-block: 24px;
}

.site-header.is-scrolled {
  background: #ffffff;
}

.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 20px 40px;
}

.header-tagline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 2px;
}

.header-tagline a {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #333333;
  position: relative;
  padding-bottom: 2px;
}

.header-tagline a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: #333333;
  transition: width 0.25s ease;
}

.header-tagline a:hover::after {
  width: 100%;
}

/* Logo */
.site-logo {
  display: block;
  transition: opacity 0.2s ease;
  line-height: 1;
}

.logo-text {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 900;
  font-size: 40px !important;
  color: #000000;
  display: block;
}

.logo-text .line1 {
  display: block;
  letter-spacing: 0.09em !important;
}

.logo-text .line2 {
  display: block;
  letter-spacing: 0 !important;
  margin-top: -9px !important;
}

.site-logo:hover {
  opacity: 0.5;
}

/* Desktop Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-nav a {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  transition: color 0.25s ease, text-shadow 0.25s ease;
  position: relative;
  padding-bottom: 2px;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.25s ease;
}

.site-nav a:hover::after { width: 100%; }

.site-header.is-scrolled .site-nav a {
  color: var(--grey);
  text-shadow: none;
}

.site-header.is-scrolled .site-nav a:hover {
  color: var(--black);
}

.nav-dot {
  font-size: 0.625rem;
  color: rgba(255, 255, 255, 0.3);
  text-shadow: none;
  line-height: 1;
}

.site-header.is-scrolled .nav-dot {
  color: var(--line);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 40px;
  height: 40px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--white);
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
  transform-origin: center;
}

.site-header.is-scrolled .nav-toggle span {
  background: var(--black);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}


/* ============================================================
   4. MOBILE NAV OVERLAY
   ============================================================ */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--black);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-link {
  font-size: clamp(2rem, 7vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--white);
  transition: color 0.2s ease;
}

.mobile-nav-link:hover {
  color: var(--cream);
}


/* ============================================================
   5. SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}


/* ============================================================
   6. SHARED LAYOUT
   ============================================================ */
.section-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.section-header-text {
  flex: 1;
}

.section-header-img {
  flex-shrink: 0;
  width: auto;
  max-width: 180px;
}

.section-header-img img {
  width: 100%;
  height: auto;
  display: block;
}

.section-label {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #333333;
  background: none !important;
  background-color: transparent !important;
  border: none !important;
  padding: 0;
  margin: 0 0 8px 0;
  display: block;
}

.section-title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.0;
  color: var(--black);
}

.img-caption {
  padding: 0.75rem 0;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey-light);
}


/* ============================================================
   7. HERO
   ============================================================ */
.section-hero {
  padding-top: var(--header-h);
}

.hero-image-wrap {
  width: 100%;
  height: calc(100vh - var(--header-h));
  overflow: hidden;
  background: var(--black);
  position: relative;
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.scroll-down {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 24px;
  color: #333;
  animation: bounce 2s infinite;
  cursor: pointer;
  z-index: 1;
  user-select: none;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

.hero-tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  padding: 3rem var(--pad-x);
  background: var(--cream);
}

.hero-tagline span,
.hero-tagline a {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #333333;
}

.hero-tagline a {
  text-decoration: none;
  position: relative;
}

.hero-tagline a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--black);
  transition: width 0.25s ease;
}

.hero-tagline a:hover::after {
  width: 100%;
}

.tagline-dot {
  color: var(--grey-light) !important;
  font-size: 0.625rem !important;
  letter-spacing: 0 !important;
}


/* ============================================================
   8. ARCHITECTURE
   ============================================================ */
.section-architecture {
  padding-block: var(--pad-section);
}

.arch-profile-top {
  max-width: 100%;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.arch-profile-top p {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--grey);
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.arch-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

.arch-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  transition: background 0.25s ease;
}

.arch-card:hover {
  background: var(--cream);
}

.arch-card .industry-img {
  overflow: hidden;
  position: relative;
  height: 400px;
  background: var(--cream);
}

.arch-card .industry-img img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.55s ease, opacity 0.3s ease;
  opacity: 0.92;
}

.arch-card:hover .industry-img img {
  transform: scale(1.03);
  opacity: 1;
}

.arch-card .industry-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.arch-card .industry-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--black);
}

.arch-card .industry-desc {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.arch-grid-item .arch-img-wrap {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.arch-grid-item .arch-img-wrap img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.arch-grid {
  display: grid;
  grid-template-columns: 58fr 42fr;
  gap: 3px;
  align-items: start;
}

.arch-primary {
  position: relative;
}

.arch-img-wrap {
  overflow: hidden;
  background: var(--cream);
  width: 100%;
}

.arch-primary .arch-img-wrap {
  /* Stretches to match right column height */
  height: 100%;
  min-height: 500px;
}

.arch-primary .arch-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.arch-secondary {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.arch-img-secondary {
  aspect-ratio: 5/4;
}

.arch-img-secondary img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.arch-profile {
  padding: 2.5rem 2rem;
  background: var(--cream);
  flex-grow: 1;
  display: flex;
  align-items: flex-start;
}

.arch-profile p {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.85;
  color: var(--grey);
  max-width: 38ch;
}


/* ============================================================
   9. TECHNOLOGY
   ============================================================ */
.section-technology {
  padding-block: var(--pad-section);
  background: var(--black);
}

.section-technology .section-label {
  color: rgba(255, 255, 255, 0.3);
}

.section-technology .section-title {
  color: var(--white);
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

.video-item {
  display: block;
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  background: #0a0a0a;
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.video-wrap a {
  position: absolute;
  inset: 0;
  display: block;
}

.video-wrap a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s ease, opacity 0.3s ease;
  opacity: 0.85;
}

.video-wrap a:hover img {
  transform: scale(1.03);
  opacity: 1;
}


.tech-intro {
  max-width: 100%;
  margin-bottom: 40px;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.tech-intro p {
  font-size: 15px;
  line-height: 1.7;
  color: #333333;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.tech-intro strong {
  font-weight: 600;
}


/* Industrie-Grid: drei Partner, erscheint unterhalb der Videos */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  margin-top: 3px;
}

.industry-card {
  display: flex;
  flex-direction: column;
  background: #0d0d0d;
  transition: background 0.25s ease;
  cursor: pointer;
}

.industry-card:hover {
  background: #1a1a1a;
}

.industry-img {
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #111;
}

.industry-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s ease, opacity 0.3s ease;
  opacity: 0.85;
}

.industry-card:hover .industry-img img {
  transform: scale(1.03);
  opacity: 1;
}

.industry-pdf-bg {
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  border-bottom: 1px solid #1e1e1e;
}

.industry-pdf-label {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: rgba(245, 240, 232, 0.12);
  transition: color 0.25s ease;
}

.industry-card:hover .industry-pdf-label {
  color: rgba(245, 240, 232, 0.3);
}

.industry-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.industry-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(245, 240, 232, 0.9);
}

.industry-desc {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: rgba(245, 240, 232, 0.35);
}


/* ============================================================
   10. AI
   ============================================================ */

.ai-text-block {
  max-width: 720px;
  margin-bottom: 3rem;
}

.ai-text-block h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  color: var(--black);
}

.ai-text-block p,
.section-ai > .section-inner > p,
.section-ai > .section-inner > h3 {
  max-width: 720px;
}

.section-ai > .section-inner > h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  margin-top: 0;
  color: var(--black);
}

.section-ai > .section-inner > p {
  max-width: 100%;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.85;
  color: var(--grey);
  margin-bottom: 1rem;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.ai-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.ai-img-grid > div {
  display: block;
}

.ai-img-grid .arch-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--cream);
}

.ai-img-grid .arch-img-wrap img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ai-book {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  margin-top: 3rem;
}

.ai-book .ai-book-img {
  flex: 0 0 auto;
  width: 260px;
}

.ai-book .ai-book-img video {
  width: 100%;
  display: block;
}

.ai-book .ai-book-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: flex-end;
}


.section-ai {
  padding-block: var(--pad-section);
  background: var(--cream);
}

.section-ai .section-label {
  color: var(--grey);
}

.ai-grid {
  display: grid;
  grid-template-columns: 40fr 60fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: start;
}

/* Theorie: Buch */
.ai-theorie {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.ai-book-img {
  overflow: hidden;
  background: transparent;
}

.ai-book-img a {
  display: block;
  background: transparent;
  line-height: 0;
  font-size: 0;
}

.ai-book-img img {
  width: 100%;
  display: block;
}

#book-video {
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
  border: none;
  outline: none;
}

.ai-book-title {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.ai-book-info {
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--grey);
}

/* Praxis: The WID */
.ai-praxis {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.ai-project-link {
  display: block;
}

.ai-project-img {
  position: relative;
  overflow: hidden;
  background: var(--cream-dark);
}

.ai-project-img img {
  width: 100%;
  display: block;
  transition: transform 0.65s ease;
}

.ai-project-link:hover .ai-project-img img {
  transform: scale(1.025);
}

.ai-project-label {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--black);
  padding: 0.4rem 0.75rem;
}

.ai-text {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.85;
  color: var(--grey);
  max-width: 54ch;
}


/* ── AI Buch-Video Card ── */
.ai-book-card {
  display: flex;
  flex-direction: column;
  background: #0d0d0d;
  margin-top: clamp(2rem, 4vw, 3rem);
  margin-bottom: 3px;
  transition: background 0.25s ease;
}
.ai-book-card:hover { background: #1a1a1a; }

.ai-book-card-video {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #000;
  line-height: 0;
}
.ai-book-card-video a {
  display: block;
  line-height: 0;
}
.ai-book-card-video video {
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
}
.ai-book-card .industry-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.ai-book-card .industry-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(245, 240, 232, 0.9);
}
.ai-book-card .industry-desc {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: rgba(245, 240, 232, 0.35);
}

/* ── AI 4 Projekt-Kacheln ── */
.ai-project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}
.ai-card {
  display: flex;
  flex-direction: column;
  background: var(--cream-dark);
  transition: background 0.25s ease;
}
.ai-card:hover { background: #ddd8ce; }

.ai-card .industry-img {
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--cream-dark);
}
.ai-card .industry-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s ease, opacity 0.3s ease;
  opacity: 0.92;
}
.ai-card:hover .industry-img img {
  transform: scale(1.03);
  opacity: 1;
}
.ai-card .industry-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.ai-card .industry-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--black);
}
.ai-card .industry-desc {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--grey);
}

@media (max-width: 768px) {
  .ai-project-grid { grid-template-columns: 1fr; }
}


/* ============================================================
   11. KONTAKT / FOOTER
   ============================================================ */
.section-kontakt {
  padding-block: var(--pad-section) 4rem;
  background: var(--white);
}

.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  padding-bottom: 4rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--line);
}

.kontakt-col .section-label {
  margin-bottom: 1.75rem;
}

.kontakt-col address {
  font-size: 1rem;
  font-weight: 400;
  line-height: 2.0;
  color: var(--black);
  margin-bottom: 2.5rem;
}

.kontakt-mail {
  border-bottom: 1px solid var(--black);
  padding-bottom: 1px;
  transition: opacity 0.2s ease;
}

.kontakt-mail:hover {
  opacity: 0.4;
}

.kontakt-downloads {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.dl-link {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--black);
  transition: opacity 0.2s ease;
  width: fit-content;
}

.dl-link:hover {
  opacity: 0.4;
}

.impressum-text p {
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--grey);
  margin-bottom: 1.5rem;
}

.impressum-verantwortlich {
  font-size: 0.75rem !important;
  color: var(--grey-light) !important;
}

.kontakt-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kontakt-footer span {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey-light);
}


/* H3 Reset */
h3 { background: none; background-color: transparent; border: none; padding: 0; font-weight: 600; }
.section-ai h3 { background: none; background-color: transparent; }

/* Kontakt Headline & LinkedIn */
.kontakt-headline {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 1rem;
  background: none;
  border: none;
  padding: 0;
}

/* ── Kontakt Intro-Text ── */
.kontakt-intro {
  max-width: 100%;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.kontakt-intro p {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--grey);
  margin-bottom: 1rem;
}

/* ── LinkedIn Grid — 3-spaltig ── */
.linkedin-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.linkedin-card {
  background: var(--cream-dark);
  overflow: hidden;
}

.linkedin-card iframe {
  display: block;
  width: 100%;
  height: 500px;
  border: none;
}

/* ── Impressum Block ── */
.impressum-block {
  padding-top: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}

.impressum-block .section-label {
  margin-bottom: 1.75rem;
}

.impressum-block .impressum-text p {
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--grey);
  margin-bottom: 1.5rem;
}

.impressum-block a {
  border-bottom: 1px solid var(--grey);
  padding-bottom: 1px;
  transition: opacity 0.2s ease;
}

.impressum-block a:hover {
  opacity: 0.4;
}

@media (max-width: 768px) {
  .linkedin-grid {
    grid-template-columns: 1fr;
  }
  .linkedin-card iframe {
    height: 500px;
  }
}

/* Kontakt Logo */
.kontakt-logo { margin-bottom: 60px; }
.kontakt-logo-text { font-size: 40px !important; font-weight: 900; display: block; text-decoration: none; border-bottom: none; }
.kontakt-logo-text .line1 { display: block; letter-spacing: 0.09em !important; text-decoration: none; border-bottom: none; }
.kontakt-logo-text .line2 { display: block; letter-spacing: 0 !important; margin-top: -8px !important; }
.kontakt-tagline { font-size: 13px; letter-spacing: 0.15em; text-transform: uppercase; color: #333; margin-top: 12px; margin-bottom: 20px; }
.kontakt-adresse { font-style: normal; font-size: 15px; line-height: 1.7; color: #333; }


/* ============================================================
   12. RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {

  .arch-grid {
    grid-template-columns: 55fr 45fr;
  }

  .ai-grid {
    gap: 3rem;
  }

  .video-grid {
    gap: 3px;
  }
}


/* ============================================================
   13. RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {

  :root {
    --header-h: 56px;
    --pad-section: 4rem;
  }

  /* Header */
  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  /* Hero */
  .hero-image-wrap {
    height: 62svh;
    min-height: 420px;
  }

  .hero-tagline {
    gap: 0.875rem;
    padding: 2rem var(--pad-x);
  }

  /* Architecture */
  .arch-grid {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .arch-primary .arch-img-wrap {
    min-height: 300px;
    aspect-ratio: 4/3;
  }

  .arch-img-secondary {
    aspect-ratio: 4/3;
  }

  .arch-grid-2col {
    grid-template-columns: 1fr;
  }

  /* Technology */
  .video-grid {
    grid-template-columns: 1fr;
    gap: 3px;
  }

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

  /* AI */
  .ai-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .ai-img-grid {
    grid-template-columns: 1fr;
  }

  .ai-book {
    flex-direction: column;
  }

  .ai-book .ai-book-img {
    width: 100%;
  }

  /* Kontakt */
  .kontakt-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .kontakt-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}


/* ============================================================
   14. RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {

  :root {
    --pad-x: 1.25rem;
    --pad-section: 3.5rem;
  }

  .hero-image-wrap {
    height: 55svh;
    min-height: 360px;
  }

  .hero-tagline {
    gap: 0.5rem;
    padding: 1.75rem var(--pad-x);
    flex-wrap: wrap;
    justify-content: center;
  }

  .section-title {
    font-size: 1.875rem;
  }

  .mobile-nav-link {
    font-size: 1.875rem;
  }
}


/* ============================================================
   15. PRINT
   ============================================================ */
@media print {
  .site-header,
  .intro-overlay,
  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }

  body {
    font-size: 11pt;
    color: #000;
    background: #fff;
  }

  .video-wrap {
    display: none;
  }
}