/* ============================================================
   webtac GmbH – Stylesheet
   Pure CSS, no external dependencies
   ============================================================ */

/* ---- CSS Variables ---- */
:root {
  --primary:       #0f1f3d;
  --primary-light: #1a3a6b;
  --accent:        #0ea5e9;
  --accent-dark:   #0284c7;
  --text:          #1e293b;
  --text-light:    #64748b;
  --bg:            #ffffff;
  --bg-alt:        #f8fafc;
  --bg-dark:       #0f1f3d;
  --border:        #e2e8f0;
  --shadow:        0 4px 24px rgba(15,31,61,0.08);
  --shadow-lg:     0 8px 48px rgba(15,31,61,0.12);
  --radius:        12px;
  --radius-lg:     20px;
  --transition:    0.3s ease;
  --header-h:      72px;
}

/* ---- 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 {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* ---- Typography ---- */
h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
}

p {
  line-height: 1.7;
}

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.6;
}

.section-dark .section-sub {
  color: rgba(255,255,255,0.65);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(14,165,233,0.35);
}

.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 6px 20px rgba(14,165,233,0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.55);
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  padding: 16px 36px;
  box-shadow: 0 4px 14px rgba(14,165,233,0.35);
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(14,165,233,0.45);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0.98);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
  background: rgba(255,255,255,1);
  box-shadow: 0 1px 0 var(--border), 0 8px 32px rgba(15,31,61,0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 32px;
}

/* ---- Logo ---- */
.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 72px;
  width: auto;
  display: block;
}

/* ---- Nav ---- */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 7px 13px;
  font-size: 0.845rem;
  font-weight: 500;
  letter-spacing: 0.012em;
  color: var(--text-light);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary);
  background: var(--bg-alt);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background: var(--bg-alt);
}

/* Thin accent indicator dot below active link */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition);
}

.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Separator line before CTA */
.nav-cta-wrap {
  display: flex;
  align-items: center;
  margin-left: 12px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--primary);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 7px;
  font-size: 0.845rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.nav-cta::after {
  display: none;
}

.nav-cta:hover {
  background: var(--primary-light) !important;
  box-shadow: 0 4px 16px rgba(15,31,61,0.2);
}

/* ---- Language Switcher ---- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(15, 31, 61, 0.45);
  padding: 4px 7px;
  border-radius: 5px;
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text);
  background: rgba(15, 31, 61, 0.07);
}

.lang-btn.lang-active {
  color: var(--accent);
}

.lang-sep {
  color: rgba(15, 31, 61, 0.2);
  font-size: 0.7rem;
  pointer-events: none;
  user-select: none;
}

/* Header has white background – lang buttons use dark text (set above) */

/* ---- Hamburger ---- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
  z-index: 1100;
  flex-shrink: 0;
}

.hamburger:hover {
  background: var(--bg-alt);
  border-color: var(--text-light);
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), width var(--transition);
  transform-origin: center;
}

.hamburger-line:nth-child(3) {
  width: 12px;
}

.hamburger.open .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
  width: 18px;
}
.hamburger.open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
  width: 18px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
  transform: scale(1.03);
  animation: heroZoom 14s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1.06); }
  to   { transform: scale(1.00); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,20,40,0.75);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 40px;
  padding-bottom: 80px;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero h1 {
  color: #fff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
  margin-bottom: 28px;
  max-width: 780px;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  line-height: 1.65;
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* Fade-in animation */
.fade-in {
  animation: fadeInUp 0.9s ease-out both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   WARUM WEBTAC
   ============================================================ */
.why-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
}

.why-card {
  flex: 1 1 200px;
  max-width: 280px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.why-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  flex-shrink: 0;
}

.why-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
}

.why-card h3 {
  color: var(--primary);
  margin-bottom: 10px;
  font-size: 1rem;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.service-icon svg {
  width: 22px;
  height: 22px;
  stroke: #fff;
}

.service-card h3 {
  color: var(--primary);
  margin-bottom: 10px;
  font-size: 1.05rem;
  line-height: 1.3;
}

.service-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 18px;
  line-height: 1.55;
}

.service-bullets {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
}

.service-bullets li {
  font-size: 0.85rem;
  color: var(--text);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

.service-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ============================================================
   EINSATZSITUATIONEN
   ============================================================ */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.usecase-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: transform var(--transition), box-shadow var(--transition);
}

.usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.usecase-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.usecase-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent);
}

.usecase-body h3 {
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: 8px;
}

.usecase-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============================================================
   PROCESS / VORGEHEN
   ============================================================ */
.process-timeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  position: relative;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
  max-width: 200px;
}

.process-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 2;
  position: relative;
}

.process-number {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.process-connector {
  position: absolute;
  top: 32px;
  left: calc(50% + 32px);
  right: calc(-50% + 32px);
  height: 2px;
  background: linear-gradient(to right, var(--accent), rgba(14,165,233,0.25));
  z-index: 1;
}

/* Last step has no connector */
.process-step:last-child .process-connector {
  display: none;
}

.process-content {
  margin-top: 20px;
  text-align: center;
  padding: 0 8px;
}

.process-content h3 {
  color: var(--primary);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.process-content p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.55;
}

/* ============================================================
   QUALITY / VERTRAUEN
   ============================================================ */
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.quality-text h2 {
  margin-bottom: 16px;
  color: var(--primary);
}

.quality-intro {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 1.65;
}

.quality-items {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.quality-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.quality-check {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(14,165,233,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.quality-check svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
}

.quality-item h3 {
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: 4px;
}

.quality-item p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

.quality-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-simple {
  max-width: 600px;
  margin: 0 auto;
}

.contact-company {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
}

.contact-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.contact-line svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.contact-line span,
.contact-line a {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.82);
  transition: color var(--transition);
}

.contact-line a:hover {
  color: var(--accent);
}

.contact-note {
  margin-top: 32px;
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
}

.contact-note p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
}

.contact-icon-fill {
  width: 18px;
  height: 18px;
  fill: var(--accent);
  flex-shrink: 0;
}

.contact-email-btn {
  display: inline-block;
  margin-top: 28px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #080f1e;
  color: rgba(255,255,255,0.55);
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.03em;
  display: inline-flex;
  align-items: center;
}

.footer-brand p {
  font-size: 0.82rem;
  max-width: 320px;
  line-height: 1.5;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
}

.footer-links a {
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-links span {
  color: rgba(255,255,255,0.2);
}

.footer-copy {
  width: 100%;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  margin-top: 8px;
}

/* ============================================================
   RESPONSIVE – 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .quality-grid {
    gap: 48px;
  }

  .why-card {
    max-width: 240px;
    flex: 1 1 180px;
  }

  .process-timeline {
    gap: 0;
  }

  .process-step {
    max-width: 160px;
  }

  .process-content h3 {
    font-size: 0.95rem;
  }

  .process-content p {
    font-size: 0.8rem;
  }
}

/* ============================================================
   RESPONSIVE – 768px
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  /* Mobile nav */
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-16px);
    transition: opacity var(--transition), transform var(--transition);
    z-index: 999;
  }

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

  .nav-list {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }

  .nav-link {
    font-size: 1.15rem;
    padding: 14px 24px;
    color: var(--text);
  }

  /* Mobile: CTA-Wrapper reset */
  .nav-cta-wrap {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
    margin-top: 12px;
  }

  .nav-cta {
    padding: 13px 36px;
    font-size: 1rem;
    width: auto;
  }

  /* Mobile: active dot ausblenden */
  .nav-link::after {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Lang switcher on mobile: smaller */
  .lang-btn {
    font-size: 0.7rem;
    padding: 3px 5px;
  }

  /* Hero */
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  /* Why */
  .why-grid {
    gap: 16px;
  }

  .why-card {
    flex: 1 1 calc(50% - 16px);
    max-width: none;
    padding: 24px 20px;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Usecases */
  .usecase-grid {
    grid-template-columns: 1fr;
  }

  /* Process */
  .process-timeline {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .process-step {
    flex-direction: row;
    align-items: flex-start;
    max-width: 100%;
    width: 100%;
    gap: 24px;
    padding-bottom: 32px;
    position: relative;
  }

  .process-connector {
    position: absolute;
    top: 64px;
    left: 32px;
    right: auto;
    bottom: 0;
    width: 2px;
    height: auto;
    background: linear-gradient(to bottom, var(--accent), rgba(14,165,233,0.2));
  }

  .process-step:last-child {
    padding-bottom: 0;
  }

  .process-content {
    margin-top: 8px;
    text-align: left;
    padding: 0;
  }

  /* Quality */
  .quality-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .quality-image {
    order: -1;
  }

  .quality-image img {
    aspect-ratio: 16/9;
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* ============================================================
   RESPONSIVE – 480px
   ============================================================ */
@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .hero {
    align-items: flex-end;
    padding-bottom: 60px;
  }

  .hero-content {
    padding-top: 20px;
    padding-bottom: 40px;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  .why-card {
    flex: 1 1 100%;
  }

  .service-card {
    padding: 24px 20px;
  }

  .usecase-card {
    flex-direction: column;
    gap: 12px;
  }

  .section-sub {
    font-size: 1rem;
  }

  .btn-accent {
    padding: 14px 28px;
  }
}

/* ============================================================
   REFERENZEN
   ============================================================ */
.refs-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}

.refs-grid--centered {
  grid-template-columns: repeat(5, minmax(0, 160px));
  justify-content: center;
}
@media (max-width: 768px) { .refs-grid--centered { grid-template-columns: repeat(3, minmax(0, 140px)); } }
@media (max-width: 400px) { .refs-grid--centered { grid-template-columns: repeat(2, minmax(0, 140px)); } }

.ref-item {
  height: 80px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 14px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  cursor: default;
}

.ref-item:hover {
  border-color: rgba(14,165,233,0.35);
  box-shadow: 0 2px 16px rgba(14,165,233,0.1);
  background: #fff;
}

/* Text-only tiles */
.ref-item span {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-light);
  text-align: center;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.ref-item:hover span {
  color: var(--primary);
}

/* Logo tiles */
.ref-item--logo {
  padding: 14px 16px;
}

.ref-item--logo img {
  max-height: 38px;
  max-width: 88%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.5;
  transition: filter var(--transition), opacity var(--transition);
  display: block;
}

.ref-item--logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* Square / icon logos – cap the displayed size symmetrically */
.ref-item--logo img[src$="glasurit.png"],
.ref-item--logo img[src$="superlyst.png"],
.ref-item--logo img[src$="flowers_for_society.png"],
.ref-item--logo img[src$="idm_merchandising.png"],
.ref-item--logo img[src$="reinkemeier.webp"] {
  max-height: 44px;
  max-width: 44px;
}

/* Very wide logos – prevent stretching */
.ref-item--logo img[src$="meight.svg"]    { max-height: 32px; }
.ref-item--logo img[src$="travelbox.png"] { max-height: 34px; }

.ref-item--logo img[src$="mydays.png"],
.ref-item--logo img[src$="Giggle_tipps.png"],
.ref-item--logo img[src$="Logisoft-s.png"],
.ref-item--logo img[src$="Jochen_Schweizer_mydays_Group.png"] {
  max-height: 28px;
}

/* Square / compact logos */
.ref-item--logo img[src$="kertos.png"] {
  max-height: 40px;
  max-width: 80px;
}

/* ===== PARTNER BLOCK ===== */
.partners-block {
  margin-top: 52px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.partners-heading {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light);
  opacity: 0.7;
  margin-bottom: 24px;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

/* Partner logo size overrides */
.ref-item--logo img[src$="aws.svg"]       { max-height: 36px; }
.ref-item--logo img[src$="google.svg"]    { max-height: 28px; }
.ref-item--logo img[src$="azure.svg"]     { max-height: 32px; }
.ref-item--logo img[src$="stripe.svg"]    { max-height: 30px; }
.ref-item--logo img[src$="snowflake.svg"] { max-height: 38px; }
.ref-item--logo img[src$="qlik.svg"]      { max-height: 30px; }
.ref-item--logo img[src$="tableau.png"]   { max-height: 30px; }
.ref-item--logo img[src$="mintellity.svg"]{ max-height: 30px; }
.ref-item--logo img[src$="netlight.svg"]  { max-height: 26px; }
.ref-item--logo img[src$="nfq.svg"]       { max-height: 28px; }
.ref-item--logo img[src$="gradion.png"]   { max-height: 40px; max-width: 40px; }
.ref-item--logo img[src$="baqend.svg"]    { max-height: 24px; }

@media (max-width: 1200px) { .partners-grid { grid-template-columns: repeat(6, 1fr); } }
@media (max-width: 768px)  { .partners-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 560px)  { .partners-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 400px)  { .partners-grid { grid-template-columns: repeat(2, 1fr); } }

.refs-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-light);
  opacity: 0.65;
  letter-spacing: 0.02em;
}

@media (max-width: 1200px) {
  .refs-grid { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 1000px) {
  .refs-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 768px) {
  .refs-grid { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .ref-item { height: 70px; }
}

@media (max-width: 560px) {
  .refs-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .ref-item { height: 62px; padding: 8px 10px; }
  .ref-item span { font-size: 0.63rem; }
  .ref-item--logo img { max-height: 30px; }
  .ref-item--logo img[src$="glasurit.png"],
  .ref-item--logo img[src$="superlyst.png"],
  .ref-item--logo img[src$="flowers_for_society.png"],
  .ref-item--logo img[src$="idm_merchandising.png"],
  .ref-item--logo img[src$="reinkemeier.webp"] {
    max-height: 34px;
    max-width: 34px;
  }
  .ref-item--logo img[src$="kertos.png"] {
    max-height: 32px;
    max-width: 64px;
  }
}

@media (max-width: 400px) {
  .refs-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   HERO EYEBROW AKRONYM
   ============================================================ */
.eyebrow-highlight {
  color: #fff;
  font-weight: 700;
}
.eyebrow-sep {
  margin: 0 6px;
  opacity: 0.4;
}
.eyebrow-part {
  opacity: 0.7;
}

/* ============================================================
   AI FOKUS SECTION
   ============================================================ */
.section-ai-focus {
  background: linear-gradient(135deg, #0a1628 0%, var(--primary) 55%, #0d2244 100%);
  color: #fff;
  padding: 88px 0;
}

.ai-focus-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ai-label {
  display: inline-block;
  background: rgba(14,165,233,0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  border: 1px solid rgba(14,165,233,0.3);
  margin-bottom: 18px;
}

.ai-focus-text h2 {
  color: #fff;
  margin-bottom: 18px;
}

.ai-focus-text p {
  color: rgba(255,255,255,0.72);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 28px;
}

.btn-ai-cta {
  display: inline-flex;
  align-items: center;
  padding: 12px 26px;
  background: rgba(14,165,233,0.15);
  border: 1px solid rgba(14,165,233,0.4);
  color: var(--accent);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-ai-cta:hover {
  background: rgba(14,165,233,0.25);
  border-color: rgba(14,165,233,0.7);
}

.ai-focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ai-tag {
  display: inline-block;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.82);
  font-size: 0.83rem;
  padding: 7px 16px;
  border-radius: 100px;
  transition: background var(--transition), border-color var(--transition);
}

.ai-tag:hover {
  background: rgba(14,165,233,0.15);
  border-color: rgba(14,165,233,0.4);
  color: #fff;
}

/* ============================================================
   FEATURED SERVICE CARD (AI)
   ============================================================ */
.service-card--featured {
  border: 2px solid var(--accent);
  background: linear-gradient(145deg, #fff 0%, rgba(14,165,233,0.04) 100%);
  position: relative;
}

.service-card--featured:hover {
  border-color: var(--accent-dark);
  box-shadow: 0 12px 48px rgba(14,165,233,0.18);
}

.service-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.service-icon--ai {
  background: linear-gradient(135deg, var(--primary) 0%, #1a3a6b 100%);
}

/* ============================================================
   EINSATZ – AI USE CASE CARD
   ============================================================ */
.usecase-card--ai {
  border-left-color: var(--primary);
  background: linear-gradient(145deg, #fff 0%, rgba(14,165,233,0.03) 100%);
}

.usecase-icon--ai {
  background: rgba(14,165,233,0.1);
}

.usecase-icon--ai svg {
  stroke: var(--primary);
}

/* ============================================================
   TEAM / GRÜNDER SECTION
   ============================================================ */
.founder-card {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
}

.founder-photo {
  position: relative;
}

.founder-photo img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  aspect-ratio: 4/5;
  display: block;
}

.founder-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.founder-meta h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.founder-title {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
}

.founder-subtitle {
  font-size: 0.82rem;
  color: var(--text-light);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.founder-bio {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.founder-bio p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.75;
}

.founder-focus {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.founder-tag {
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 100px;
}

.founder-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.founder-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: color var(--transition);
}

.founder-link:hover {
  color: var(--accent);
}

.founder-link svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
}

/* LinkedIn icon uses fill not stroke */
.founder-link svg[fill="currentColor"] {
  fill: currentColor;
  stroke: none;
}

/* ============================================================
   FOOTER ACRONYM
   ============================================================ */
.footer-acronym {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.footer-acronym strong {
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   RESPONSIVE – AI SECTION + TEAM
   ============================================================ */
@media (max-width: 1024px) {
  .ai-focus-inner {
    gap: 48px;
  }

  .founder-card {
    grid-template-columns: 260px 1fr;
    gap: 40px;
    padding: 36px;
  }
}

@media (max-width: 768px) {
  .ai-focus-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .section-ai-focus {
    padding: 60px 0;
  }

  .founder-card {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 28px 24px;
  }

  .founder-photo img {
    aspect-ratio: 3/2;
    max-width: 320px;
  }

  .founder-meta h3 {
    font-size: 1.4rem;
  }

  .logo-img {
    height: 61px;
  }
}

@media (max-width: 480px) {
  .ai-tag {
    font-size: 0.78rem;
    padding: 6px 12px;
  }

  .founder-card {
    padding: 24px 20px;
  }
}

/* ============================================================
   ENHANCED RESPONSIVE – 480px (small mobile / iPhone SE, 12 mini)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --header-h: 60px;
  }

  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .section-sub {
    font-size: 0.95rem;
  }

  /* Nav */
  .nav-link {
    font-size: 1rem;
    padding: 10px 16px;
  }

  .nav-cta {
    padding: 10px 28px;
    font-size: 0.95rem;
  }

  /* Hero */
  .hero-eyebrow {
    font-size: 0.75rem;
  }

  /* Why cards */
  .why-card {
    padding: 20px 16px;
  }

  /* Service cards */
  .service-card {
    padding: 20px 16px;
  }

  .service-card h3 {
    font-size: 0.98rem;
  }

  /* Process */
  .process-circle {
    width: 52px;
    height: 52px;
    min-width: 52px;
  }

  .process-number {
    font-size: 0.95rem;
  }

  /* Quality */
  .quality-intro {
    font-size: 0.95rem;
  }

  /* Founder */
  .founder-meta h3 {
    font-size: 1.25rem;
  }

  .founder-tag {
    font-size: 0.72rem;
    padding: 4px 10px;
  }

  .founder-link {
    font-size: 0.85rem;
  }

  /* Refs logos */
  .ref-item--logo img {
    max-height: 32px;
  }

  /* Partner logos – cap in 2-col */
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Footer */
  .footer-logo {
    font-size: 1rem;
  }

  .footer-brand p {
    max-width: 100%;
    font-size: 0.88rem;
  }

  .footer-copy p {
    font-size: 0.72rem;
    line-height: 1.6;
  }

  /* Cookie banner */
  .cookie-banner-actions {
    width: 100%;
    flex-direction: column;
  }

  .btn-cookie {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}

/* ============================================================
   ENHANCED RESPONSIVE – 430px (iPhone 15 Plus / large phones)
   ============================================================ */
@media (max-width: 430px) {
  /* 3 cols × 140px + 2×10px gap = 440px – would overflow; force 2-col */
  .refs-grid--centered {
    grid-template-columns: repeat(2, minmax(0, 160px));
  }

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

/* ============================================================
   ENHANCED RESPONSIVE – 390px (iPhone 14 / standard small)
   ============================================================ */
@media (max-width: 390px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  h3 {
    font-size: 1.05rem;
  }

  .hero-sub {
    font-size: 0.9rem;
  }

  .ai-tag {
    font-size: 0.72rem;
    padding: 5px 10px;
  }

  .founder-focus {
    gap: 6px;
  }

  .refs-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .ref-item {
    height: 58px;
    padding: 6px 8px;
  }

  .ref-item span {
    font-size: 0.6rem;
  }

  .ref-item--logo img {
    max-height: 28px;
  }

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

/* ============================================================
   SKIP LINK (WCAG 2.1 / BFSG)
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 12px 20px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  z-index: 9999;
  border-radius: 0 0 var(--radius) 0;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* ============================================================
   COOKIE CONSENT BANNER (DSGVO)
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 8000;
  background: var(--primary);
  border-top: 2px solid var(--accent);
  padding: 20px 0;
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-banner-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cookie-banner-text {
  flex: 1 1 400px;
}

.cookie-banner-text p {
  color: rgba(255,255,255,0.85);
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 0;
}

.cookie-banner-text p + p {
  margin-top: 4px;
}

.cookie-banner-text strong {
  color: #fff;
  font-size: 0.95rem;
}

.cookie-banner-text a {
  color: var(--accent);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.btn-cookie {
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition);
}

.btn-cookie:hover {
  opacity: 0.85;
}

.btn-cookie-decline {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.8);
}

.btn-cookie-accept {
  background: var(--accent);
  color: #fff;
}

@media (max-width: 640px) {
  .cookie-banner-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* ============================================================
   UTILITY / ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}