/* === FAHRWERK — German Industrial Design System === */

:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #111114;
  --bg-card: #16161a;
  --bg-card-hover: #1c1c21;
  --fg-primary: #e8e6e3;
  --fg-secondary: #8a8880;
  --fg-muted: #5a5850;
  --accent: #d4a030;
  --accent-dim: #b8891a;
  --accent-glow: rgba(212, 160, 48, 0.12);
  --border: #2a2a2e;
  --border-subtle: #1e1e22;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1120px;
  --radius: 2px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(10, 10, 12, 0.85);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  color: var(--accent);
  font-size: 18px;
}

.logo-text {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav-cta {
  display: inline-block;
  padding: 8px 18px;
  background: var(--accent);
  color: #0a0a0c;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  transition: background 0.2s, opacity 0.2s;
}

.nav-cta:hover {
  background: var(--accent-dim);
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.3;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 6px 14px;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  margin-bottom: 32px;
  background: var(--accent-glow);
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  max-width: 800px;
}

.hero-accent {
  color: var(--accent);
}

.hero-lede {
  font-size: 1.15rem;
  color: var(--fg-secondary);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-block;
  padding: 14px 28px;
  background: var(--accent);
  color: #0a0a0c;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.01em;
  border-radius: var(--radius);
  transition: background 0.2s, transform 0.15s;
}

.btn-hero-primary:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

.btn-hero-secondary {
  display: inline-block;
  padding: 14px 24px;
  background: transparent;
  color: var(--fg-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: color 0.2s, border-color 0.2s;
}

.btn-hero-secondary:hover {
  color: var(--fg-primary);
  border-color: var(--fg-muted);
}

.closing-actions {
  margin-top: 32px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* === PROBLEM === */
.problem {
  padding: 120px 32px;
  background: var(--bg-secondary);
}

.problem-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.problem-label,
.features-label,
.how-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.problem-title,
.features-title,
.how-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
  max-width: 600px;
}

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

.problem-card {
  background: var(--bg-card);
  padding: 40px 36px;
  position: relative;
  transition: background 0.2s;
}

.problem-card:hover {
  background: var(--bg-card-hover);
}

.problem-icon {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-dim);
  display: block;
  margin-bottom: 16px;
}

.problem-card p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* === FEATURES === */
.features {
  padding: 120px 32px;
}

.features-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.feature-card {
  background: var(--bg-card);
  padding: 44px 40px;
  border-left: 2px solid var(--border);
  transition: border-color 0.3s, background 0.2s;
}

.feature-card:hover {
  border-left-color: var(--accent);
  background: var(--bg-card-hover);
}

.feature-card-large {
  grid-column: 1 / -1;
  border-left-width: 3px;
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-dim);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--fg-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  max-width: 520px;
}

/* === HOW === */
.how {
  padding: 120px 32px;
  background: var(--bg-secondary);
}

.how-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.how-step {
  display: flex;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.how-step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  min-width: 60px;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--fg-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  max-width: 500px;
}

/* === CLOSING === */
.closing {
  padding: 140px 32px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse 60% 40% at 50% 100%, var(--accent-glow), transparent);
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.closing-text {
  color: var(--fg-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 48px;
}

.closing-price {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 20px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.price-from {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.price-value {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
}

.price-per {
  font-size: 0.85rem;
  color: var(--fg-secondary);
}

/* === FOOTER === */
.footer {
  padding: 40px 32px;
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.footer-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--fg-muted);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 80px 20px;
  }

  .problem-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card-large {
    grid-column: 1;
  }

  .how-step {
    flex-direction: column;
    gap: 16px;
  }

  .step-num {
    font-size: 2rem;
  }

  .closing-title {
    font-size: 1.8rem;
  }

  .nav-tag {
    display: none;
  }

  .nav-cta {
    display: none;
  }

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

  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .problem-card,
  .feature-card {
    padding: 28px 24px;
  }

  .price-value {
    font-size: 1.8rem;
  }
}