/* ============================================================
   AIMOTION — style.css
   Mobile-first responsive design
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --color-bg:           #080c18;
  --color-bg-card:      #0f1628;
  --color-bg-section:   #0c1020;
  --color-bg-alt:       #06091440;
  --color-accent:       #4a9eff;
  --color-accent-dim:   #4a9eff22;
  --color-accent-soft:  #1a3a6e;
  --color-text:         #e8eaf0;
  --color-text-muted:   #8892a4;
  --color-border:       #1a2540;
  --color-border-light: #1e2d50;
  --color-success:      #34d399;
  --color-error:        #f87171;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --nav-height: 64px;
  --section-pad: 80px 20px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --transition: 0.3s ease;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 40px rgba(74, 158, 255, 0.12);
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: #7ab8ff; }

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

ul { list-style: none; }

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ── Utility ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #3a8aef;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 158, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-light);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-bottom var(--transition);
}

.nav.scrolled {
  background: rgba(8, 12, 24, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-logo .logo-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 158, 255, 0.6); }
  50% { box-shadow: 0 0 0 6px rgba(74, 158, 255, 0); }
}

.nav-links {
  display: none;
  gap: 36px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-text); }

.nav-cta {
  display: none;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(8, 12, 24, 0.97);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-menu.open { transform: translateX(0); }

.mobile-menu a {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--color-accent); }

/* ── Hero ───────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 120px 20px 80px;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  background: rgba(15, 22, 40, 0.6);
  backdrop-filter: blur(8px);
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #ffffff 0%, #c8dfff 50%, #4a9eff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(1rem, 3vw, 1.4rem);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}

#typing-text {
  color: var(--color-accent);
  font-weight: 600;
}

.hero-description {
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 48px;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2.5s ease-in-out infinite;
}
.scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text-muted);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ── Section Base ───────────────────────────────────────────── */
section {
  padding: var(--section-pad);
}

/* ── Über mich ──────────────────────────────────────────────── */
#ueber-mich {
  background: var(--color-bg-section);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

.about-photo-wrap {
  display: flex;
  justify-content: center;
}

.about-photo {
  width: 240px;
  height: 300px;
  border-radius: var(--border-radius-lg);
  object-fit: cover;
  border: 2px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
}

/* Foto-Platzhalter (solange kein stefan.jpg vorhanden) */
.photo-placeholder {
  width: 240px;
  height: 300px;
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-accent-soft) 100%);
  border: 2px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 20px;
}
.photo-placeholder svg {
  width: 48px;
  height: 48px;
  stroke: var(--color-accent);
  opacity: 0.6;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.about-text p strong {
  color: var(--color-text);
}
.about-text a {
  border-bottom: 1px solid rgba(74, 158, 255, 0.3);
}
.about-text a:hover {
  border-bottom-color: var(--color-accent);
}

/* Timeline */
.timeline {
  margin: 40px 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}
.timeline-item {
  display: flex;
  gap: 20px;
  padding-bottom: 28px;
  padding-left: 52px;
  position: relative;
}
.timeline-dot {
  position: absolute;
  left: 14px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 12px rgba(74, 158, 255, 0.5);
}
.timeline-year {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  margin-bottom: 2px;
}
.timeline-title {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.95rem;
}
.timeline-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Fun Facts */
.fun-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.fun-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  transition: all var(--transition);
}
.fun-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ── Warum AI ───────────────────────────────────────────────── */
#warum-ai {
  background: var(--color-bg);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 48px 0;
}

.why-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.why-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.why-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.why-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}
.why-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.why-quote {
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-accent-soft));
  border: 1px solid var(--color-border-light);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--border-radius);
  padding: 28px 32px;
  margin-top: 40px;
}
.why-quote p {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
}
.why-quote cite {
  display: block;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: normal;
}

/* ── Angebote ───────────────────────────────────────────────── */
#angebote {
  background: var(--color-bg-section);
}

.offers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 48px;
}

.offer-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.offer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.offer-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-accent);
}
.offer-card:hover::before { opacity: 1; }

.offer-icon {
  font-size: 2.4rem;
  margin-bottom: 20px;
}
.offer-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}
.offer-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 24px;
}
.offer-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: gap var(--transition);
}
.offer-link:hover { gap: 10px; color: var(--color-accent); }
.offer-link svg {
  width: 16px;
  height: 16px;
}

/* ── Für wen ────────────────────────────────────────────────── */
#fuer-wen {
  background: var(--color-bg);
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 48px;
}

.audience-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition);
}
.audience-card:hover {
  border-color: var(--color-border-light);
  transform: translateX(4px);
}
.audience-icon {
  font-size: 2rem;
  flex-shrink: 0;
}
.audience-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.audience-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.purest-reference {
  margin-top: 48px;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-accent-soft));
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.purest-reference .ref-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.purest-reference h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}
.purest-reference p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ── Vision ─────────────────────────────────────────────────── */
#vision {
  background: linear-gradient(135deg, var(--color-bg-section) 0%, #0a1528 100%);
  position: relative;
  overflow: hidden;
}
#vision::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74, 158, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.vision-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.vision-quote-mark {
  font-size: 6rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.3;
  font-family: Georgia, serif;
  margin-bottom: -20px;
}

.vision-quote {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 500;
  line-height: 1.7;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 24px;
}
.vision-quote em { color: var(--color-accent); font-style: normal; }

.vision-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.vision-author strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}
.vision-author span {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ── Kontakt ────────────────────────────────────────────────── */
#kontakt {
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-top: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: all var(--transition);
  text-decoration: none;
  color: var(--color-text);
}
.contact-card:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
  transform: translateX(4px);
}
.contact-card-icon {
  width: 42px;
  height: 42px;
  background: var(--color-accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-card-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
}
.contact-card-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}
.contact-card-value {
  font-size: 0.92rem;
  font-weight: 500;
}

/* Kontaktformular */
.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 32px;
}
.contact-form h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-text);
}

.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 0.92rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.15);
}
.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}
.form-group textarea {
  min-height: 140px;
  resize: vertical;
}
.form-error-msg {
  font-size: 0.78rem;
  color: var(--color-error);
  margin-top: 4px;
  display: none;
}
.form-error-msg.visible { display: block; }

.form-submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.form-submit-btn:hover {
  background: #3a8aef;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 158, 255, 0.3);
}
.form-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-success {
  display: none;
  text-align: center;
  padding: 24px;
  color: var(--color-success);
  font-size: 0.95rem;
}
.form-success.visible { display: block; }
.form-success svg {
  width: 40px;
  height: 40px;
  stroke: var(--color-success);
  margin: 0 auto 12px;
  display: block;
}

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
  padding: 48px 20px 32px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
  text-align: center;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.footer-motto {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-text); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

/* ── Impressum / Datenschutz Seiten ─────────────────────────── */
.legal-page {
  min-height: 100vh;
  background: var(--color-bg);
  padding-top: calc(var(--nav-height) + 40px);
}

.legal-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.legal-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.legal-content .legal-subtitle {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 48px;
}

.legal-section {
  margin-bottom: 40px;
}
.legal-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.legal-section p,
.legal-section li {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 8px;
}
.legal-section li { padding-left: 16px; }
.legal-section strong { color: var(--color-text); }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  transition: color var(--transition);
}
.back-link:hover { color: var(--color-accent); }
.back-link svg {
  width: 16px;
  height: 16px;
}

/* ── Responsive: Tablet 768px+ ──────────────────────────────── */
@media (min-width: 768px) {
  :root {
    --section-pad: 100px 40px;
  }

  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .hamburger { display: none; }

  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .about-grid {
    grid-template-columns: 240px 1fr;
  }

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

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

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

  .contact-grid {
    grid-template-columns: 1fr 1.4fr;
    align-items: start;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    align-items: flex-start;
  }

  .timeline::before {
    display: none;
  }
  .timeline {
    flex-direction: row;
    overflow-x: auto;
    gap: 0;
    padding-bottom: 24px;
  }
  .timeline-item {
    flex-direction: column;
    padding-left: 0;
    padding-bottom: 0;
    flex: 1;
    min-width: 100px;
    position: relative;
    padding-top: 24px;
  }
  .timeline-item::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-border-light);
  }
  .timeline-dot {
    position: absolute;
    left: 0;
    top: 0;
  }
}

/* ── Responsive: Desktop 1024px+ ───────────────────────────── */
@media (min-width: 1024px) {
  .audience-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .purest-reference {
    flex-direction: row;
    align-items: center;
    gap: 32px;
  }
  .purest-reference .ref-content { flex: 1; }
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent-soft); }