/* =========================================================
   net01-digital — Stylesheet
   Farbwelt: dunkles Petrol/Tinte als Basis, ein Signalton (Amber)
   als einziger starker Akzent. Typografie: Space Grotesk (Headlines)
   + Inter (Fließtext) + IBM Plex Mono nur für echte Code-Bezüge.
   ========================================================= */

:root {
  /* Farbe */
  --bg: #F1F3F5;
  --bg-panel: #E6E9EC;
  --bg-panel-raised: #FFFFFF;
  --line: rgba(18, 28, 38, 0.12);
  --line-strong: rgba(18, 28, 38, 0.30);
  --text: #16202B;
  --text-muted: #55636F;
  --text-faint: #8B98A2;
  --accent: #2453D8;
  --accent-dim: #17357F;
  --accent-ink: #FFFFFF;
  --teal: #3D6E85;

  /* Typografie — ausschließlich systemeigene Schriften, keine externen Requests */
  --font-display: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  /* Layout */
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; max-width: 62ch; }
p.lede { font-size: 1.15rem; color: var(--text-muted); max-width: 52ch; }

ul, ol { padding-left: 1.2em; margin: 0 0 1em; }
li { margin-bottom: 0.4em; }

code, .mono { font-family: var(--font-mono); }

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

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.5em;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { background: var(--accent-dim); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(241, 243, 245, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.logo span { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}
.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 0.97rem;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}
.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--accent);
}
.has-submenu { position: relative; }
.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: -1rem;
  min-width: 240px;
  background: var(--bg-panel-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem;
  margin-top: 0.6rem;
}
.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu { display: block; }
.submenu a {
  display: block;
  padding: 0.6rem 0.8rem;
  border-radius: 2px;
  color: var(--text-muted);
}
.submenu a:hover { background: rgba(232,163,61,0.08); color: var(--text); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--text);
  padding: 0.5em 0.7em;
  border-radius: var(--radius);
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(60px, 10vw, 120px) 0 clamp(50px, 8vw, 90px);
  border-bottom: 1px solid var(--line);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  color: var(--teal);
  font-size: 0.95rem;
  margin-bottom: 1em;
}
.hero h1 { margin-bottom: 0.4em; }
.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.hero-art { justify-self: center; }

/* Subtle single reveal on load for the hero art */
.hero-art svg {
  animation: rise 0.9s cubic-bezier(.2,.7,.3,1) both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Interaktive Netzwerk-Grafik: Knoten lassen sich anfassen und verschieben */
.net-node {
  cursor: grab;
  touch-action: none;
}
.net-node:active { cursor: grabbing; }
.net-node:hover { filter: brightness(1.12); }
.hero-art-caption {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-faint);
  margin: 0.9rem 0 0;
}

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  padding: clamp(50px, 8vw, 84px) 0 clamp(36px, 6vw, 56px);
  border-bottom: 1px solid var(--line);
}
.breadcrumbs {
  font-size: 0.88rem;
  color: var(--text-faint);
  margin-bottom: 1.4em;
}
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--accent); }

/* ---------- Stat bar ---------- */
.stat-bar {
  border-bottom: 1px solid var(--line);
  background: var(--bg-panel);
}
.stat-bar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem 4rem;
  padding-top: 2.4rem;
  padding-bottom: 2.4rem;
}
.stat dt {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
}
.stat dd {
  margin: 0.2em 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* ---------- Section scaffolding ---------- */
.section { padding: clamp(56px, 9vw, 100px) 0; }
.section-head {
  max-width: 640px;
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
}
.section--panel { background: var(--bg-panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Service rows (alternating, not identical cards) ---------- */
.service-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.4rem 0;
  border-top: 1px solid var(--line);
}
.service-row:last-child { border-bottom: 1px solid var(--line); }
.service-row .idx {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.95rem;
  padding-top: 0.2em;
}
.service-row h3 { margin-bottom: 0.35em; }
.service-row .service-meta {
  display: flex;
  gap: 1.4rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.service-row .service-meta a {
  font-size: 0.92rem;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}
.service-row .service-meta a:hover { border-color: var(--accent); }

/* ---------- Process steps (genuine sequence -> numbering justified) ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.process-step {
  background: var(--bg);
  padding: 2rem 1.6rem;
}
.process-step .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 1.2rem;
}

/* ---------- Price cards ---------- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.price-card {
  background: var(--bg);
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
}
.price-card .price-tag {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.price-card .price-amount {
  font-family: var(--font-display);
  font-size: 1.9rem;
  margin: 0.3rem 0 0.9rem;
}
.price-card h3 { margin-bottom: 0.4em; }
.price-card p { color: var(--text-muted); font-size: 0.95rem; }
.price-card ul { margin-top: auto; padding-left: 1.1em; font-size: 0.92rem; }
.price-card li { margin-bottom: 0.35em; }

/* ---------- Definition-style differentiators ---------- */
.diff-list { border-top: 1px solid var(--line); }
.diff-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--line);
}
.diff-item h4 { margin: 0; font-family: var(--font-body); font-weight: 600; color: var(--text); }
.diff-item h4 a { color: inherit; border-bottom: 1px solid transparent; }
.diff-item h4 a:hover { color: var(--accent); border-color: var(--accent); }
.diff-item p { margin: 0; color: var(--text-muted); }

/* ---------- Tech / tag pills (inline, thematic mono use) ---------- */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.4rem 0; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.35em 0.7em;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text-muted);
}

/* ---------- Terminal / code panel ---------- */
.code-panel {
  background: #0A1210;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #B9CFC6;
  overflow-x: auto;
}
.code-panel .cmt { color: var(--text-faint); }
.code-panel .kw { color: var(--accent); }

/* ---------- FAQ ---------- */
.faq-item {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-display);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus { font-family: var(--font-mono); color: var(--accent); font-size: 1.2rem; }
.faq-item[open] summary .plus { transform: rotate(45deg); }
.faq-item summary .plus { transition: transform 0.15s ease; display: inline-block; }
.faq-item p { margin-top: 0.9rem; color: var(--text-muted); }

/* ---------- Two column layout ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
}
.two-col--wide-left { grid-template-columns: 1.3fr 1fr; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
}
.field { margin-bottom: 1.3rem; }
.field label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.4em;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--line-strong);
  color: var(--text);
  padding: 0.75em 0.9em;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.98rem;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--accent);
}
.contact-detail { margin-bottom: 1.6rem; }
.contact-detail dt { color: var(--text-faint); font-size: 0.85rem; margin-bottom: 0.2em; }
.contact-detail dd { margin: 0; font-size: 1.05rem; }

/* ---------- CTA band ---------- */
.cta-band {
  border-top: 1px solid var(--line);
  padding: clamp(50px, 8vw, 84px) 0;
  text-align: left;
}
.cta-band .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-band h2 { margin-bottom: 0; max-width: 20ch; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 3.5rem 0 2.2rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.6rem;
}
.footer-grid h5 {
  font-family: var(--font-body);
  color: var(--text);
  font-size: 0.85rem;
  margin: 0 0 1em;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.6em; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .nav-links, .nav .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 320px; }
  .two-col, .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .process { grid-template-columns: 1fr 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .diff-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .service-row { grid-template-columns: 40px 1fr; }
}
@media (max-width: 540px) {
  .process { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
}

/* Mobile nav panel */
.nav-panel {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 60;
  padding: var(--pad);
  overflow-y: auto;
}
.nav-panel.open { display: block; }
.nav-panel .close-btn {
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--text);
  padding: 0.5em 0.8em;
  border-radius: var(--radius);
  float: right;
}
.nav-panel ul {
  list-style: none;
  padding: 0;
  margin: 4rem 0 0;
}
.nav-panel li { border-bottom: 1px solid var(--line); }
.nav-panel a {
  display: block;
  padding: 1.1rem 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
}