/* Zimmermann Datentechnik — VDAT Design */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-surface: #f5f6f8;
  --color-surface-2: #ececec;
  --color-border: #d0d0d0;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-accent: #1e88d9;
  --color-accent-2: #d32f2f;
  --color-accent-soft: rgba(30, 136, 217, 0.12);
  --max-width: 1120px;
  --radius: 14px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.2;
  color: var(--color-text);
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand strong {
  font-size: 1.15rem;
  letter-spacing: 0.3px;
}

.brand span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.brand:hover { text-decoration: none; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-size: 1.3rem;
  padding: 6px 12px;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  color: var(--color-accent-2);
  background: rgba(211, 47, 47, 0.12);
  border: 1px solid rgba(211, 47, 47, 0.35);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  margin: 0 0 16px;
  letter-spacing: -0.5px;
}

.hero p.lead {
  max-width: 640px;
  margin: 0 auto 30px;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover { background: #1673bb; }

.btn-secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover { border-color: var(--color-accent); }

/* Sections */
section { padding: 64px 0; }
section + section { border-top: 1px solid var(--color-border); }

.section-head {
  max-width: 680px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 12px;
}

.section-head p {
  color: var(--color-text-muted);
  margin: 0;
}

/* Feature grid */
.grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

/* Two column media */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }

.split img {
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

/* Lists */
.checklist, .plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.checklist li {
  position: relative;
  padding-left: 28px;
  color: var(--color-text-muted);
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent-2);
  font-weight: 700;
}

.numbered-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: item;
}

.numbered-grid li {
  counter-increment: item;
  position: relative;
  padding-left: 34px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.numbered-grid li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: -1px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Pricing */
.pricing {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.price-card .amount {
  font-size: 2rem;
  font-weight: 700;
  margin: 6px 0 14px;
  color: var(--color-text);
}

.price-card .amount span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.price-card.highlight {
  border-color: var(--color-accent);
  background: linear-gradient(160deg, rgba(63,182,224,0.12), var(--color-surface) 60%);
}

/* Timeline */
.timeline {
  display: grid;
  gap: 28px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.timeline-item:last-child { border-bottom: none; padding-bottom: 0; }

.timeline-year {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
}

.timeline-item h3 { margin: 0 0 8px; }
.timeline-item p { margin: 0; color: var(--color-text-muted); }

/* Callout / CTA */
.cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 44px;
  text-align: center;
  box-shadow: var(--shadow);
}

.cta h2 { margin: 0 0 12px; }
.cta p { color: var(--color-text-muted); margin: 0 0 24px; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  row-gap: 14px;
  column-gap: 12px;
  margin: 0;
}

.contact-info dt {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.contact-info dd {
  margin: 0;
  font-weight: 500;
}

.mail-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.mail-cta h3 { margin-top: 0; }

/* Notice / hint box */
.notice {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent-2);
  border-radius: 10px;
  padding: 18px 20px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Legal pages */
.legal h2 {
  margin-top: 40px;
  font-size: 1.2rem;
}

.legal h2:first-child { margin-top: 0; }

.legal p, .legal li { color: var(--color-text-muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0 30px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links {
  display: flex;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Pricing layout */
.pricing-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.price-card.recommended {
  position: relative;
  border-color: var(--color-accent-2);
  background: linear-gradient(160deg, rgba(211,47,47,0.08), var(--color-surface) 60%);
}

.recommendation-badge {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--color-accent-2);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* FAQ Section */
.faq {
  display: grid;
  gap: 20px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  background: var(--color-surface);
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background 0.2s ease;
}

.faq-question:hover {
  background: var(--color-surface-2);
}

.faq-question::after {
  content: "▼";
  font-size: 0.8rem;
  color: var(--color-accent);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 20px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer p {
  margin: 0 0 12px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .split, .split.reverse { grid-template-columns: 1fr; direction: ltr; }
  .pricing, .contact-grid, .pricing-wrapper { grid-template-columns: 1fr; }
  .numbered-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--color-border); }
  .nav-toggle { display: inline-flex; }
}