/* Visitenkarte im Datenblatt-Stil. Keine externen Schriften (DSGVO), nur Systemschriften. */

:root {
  --paper: #efede6;
  --sheet: #fcfbf8;
  --ink: #141618;
  --ink-2: #50555b;
  --ink-3: #868a90;
  --hair: #d3cfc4;
  --tint: #f1eee6;
  --accent: #dd4b1a;
  --accent-soft: rgba(221, 75, 26, .08);
  --grid-minor: rgba(221, 75, 26, .07);
  --grid-major: rgba(221, 75, 26, .17);
  --ok: #2b9a48;

  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", "DejaVu Sans Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans", "Nimbus Sans", sans-serif;

  --frame: 22px;
  --gut: 28px;
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  min-height: 100vh;
  padding: 48px 24px;
  color: var(--ink);
  font: 16px/1.55 var(--sans);
  background-color: var(--paper);
  /* Millimeterpapier: 1 mm fein, 5 mm kraeftig */
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);
  background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
  background-position: -1px -1px;
}

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

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

/* ---------- Zeichnungsrahmen ---------- */

.frame {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  padding: var(--frame);
  background: var(--sheet);
  border: 1.5px solid var(--ink);
}

.zones {
  position: absolute;
  display: flex;
  font: 500 10px/1 var(--mono);
  color: var(--ink-2);
  user-select: none;
}
.zones span { flex: 1; display: flex; align-items: center; justify-content: center; }
.zones--top, .zones--bottom { left: var(--frame); right: var(--frame); height: var(--frame); }
.zones--top { top: 0; }
.zones--bottom { bottom: 0; }
.zones--top span + span,
.zones--bottom span + span { border-left: 1px solid var(--ink); }
.zones--left, .zones--right { top: var(--frame); bottom: var(--frame); width: var(--frame); flex-direction: column; }
.zones--left { left: 0; }
.zones--right { right: 0; }
.zones--left span + span,
.zones--right span + span { border-top: 1px solid var(--ink); }

.sheet { border: 1px solid var(--ink); }

/* ---------- Kopfzeile ---------- */

.hd {
  display: grid;
  grid-template-columns: 1fr auto auto;
  border-bottom: 1.5px solid var(--ink);
}

.hd-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px var(--gut);
  color: inherit;
  text-decoration: none;
}
.mark { width: 38px; height: 38px; flex: none; }
.hd-brand strong { display: block; font: 700 15px/1.2 var(--sans); letter-spacing: .01em; }
.hd-brand small { display: block; font: 11.5px/1.3 var(--mono); color: var(--ink-2); margin-top: 2px; }

.hd-flag {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  border-left: 1px solid var(--ink);
  font: 700 11px/1.2 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  /* Schraffur wie in der technischen Zeichnung */
  background: repeating-linear-gradient(-45deg, transparent 0 6px, var(--accent-soft) 6px 8px);
}

.hd-meta {
  display: grid;
  grid-template-columns: repeat(4, auto);
  border-left: 1px solid var(--ink);
}
.hd-meta div { padding: 11px 14px; }
.hd-meta div + div { border-left: 1px solid var(--hair); }
.hd-meta dt {
  font: 10px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--ink-3);
  margin-bottom: 7px;
  white-space: nowrap;
}
.hd-meta dd { font: 600 13px/1 var(--mono); white-space: nowrap; }

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  border-bottom: 1.5px solid var(--ink);
}

.hero-text { padding: 52px var(--gut) 44px; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 600 12px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before { content: ""; width: 28px; height: 1.5px; background: var(--accent); }

.hero h1 {
  margin: 20px 0 24px;
  font: 700 clamp(40px, 6.2vw, 72px)/.95 var(--sans);
  letter-spacing: -.035em;
}

.lead { max-width: 30em; font-size: 18px; line-height: 1.5; color: #2a2d31; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  padding: 8px 12px;
  border: 1px solid var(--ink);
  font: 12px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.led { width: 8px; height: 8px; background: var(--ok); box-shadow: 0 0 0 3px rgba(43, 154, 72, .18); }

@media (prefers-reduced-motion: no-preference) {
  .led { animation: heartbeat 2.6s infinite; }
  @keyframes heartbeat {
    0%, 88%, 100% { opacity: 1; }
    93% { opacity: .2; }
  }
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border: 1.5px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: 600 12.5px/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .12s, border-color .12s, color .12s;
}
.btn--primary { background: var(--ink); color: var(--sheet); }
.btn--primary::after { content: "\2192"; font-family: var(--sans); }
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---------- Pinbelegung ---------- */

.pinout {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px var(--gut) 22px;
  border-left: 1px solid var(--ink);
  /* Punktraster wie im Schaltplan-Editor */
  background: radial-gradient(circle, #cdc9be 1px, transparent 1.4px) 0 0 / 14px 14px;
}
.pinout svg { display: block; width: 100%; max-width: 440px; height: auto; margin: 0 auto; overflow: visible; }

.chip { fill: var(--sheet); stroke: var(--ink); stroke-width: 2; }
.chip-ref { font: 600 12px var(--mono); fill: var(--ink-2); }
.chip-label { font: 700 22px var(--mono); fill: var(--ink); letter-spacing: .02em; }
.chip-sub { font: 10px var(--mono); fill: var(--ink-2); letter-spacing: .14em; }
.p1 { fill: var(--accent); }

.pin line { stroke: var(--ink); stroke-width: 2; transition: stroke .12s; }
.pin .pad { fill: var(--ink); transition: fill .12s; }
.pin .nm { font: 700 13px var(--mono); fill: var(--ink); transition: fill .12s; }
.pin .no { font: 11px var(--mono); fill: var(--ink-3); }
.pin.is-hot line { stroke: var(--accent); }
.pin.is-hot .pad,
.pin.is-hot .nm { fill: var(--accent); }

.legend { display: grid; gap: 6px; margin-top: 18px; font: 12px/1.45 var(--mono); }
.legend div { display: grid; grid-template-columns: 40px 1fr; gap: 10px; padding: 2px 0; transition: color .12s; }
.legend dt { font-weight: 700; }
.legend dd { color: var(--ink-2); }
.legend div.is-hot dt,
.legend div.is-hot dd { color: var(--accent); }

.pinout figcaption {
  margin-top: 16px;
  padding-top: 10px;
  border-top: 1px solid var(--hair);
  font: 11px/1.4 var(--mono);
  color: var(--ink-2);
}

/* ---------- Abschnitte ---------- */

.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1.5px solid var(--ink);
}
.cols > .block + .block { border-left: 1px solid var(--ink); }

.block { padding: 34px var(--gut) 38px; }

.sec {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1.5px solid var(--ink);
  font: 700 14.5px/1.1 var(--sans);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.sec span { min-width: 1.2em; font: 700 13px/1 var(--mono); color: var(--accent); }
.block > .sec:not(:first-child) { margin-top: 36px; }

.prose p { font-size: 15.5px; line-height: 1.6; color: #2a2d31; max-width: 38em; }
.prose p + p { margin-top: 12px; }

/* Merkmale */
.feat { list-style: none; }
.feat li {
  display: grid;
  grid-template-columns: 62px 1fr auto;
  gap: 16px;
  align-items: start;
  padding: 12px 8px 12px 0;
  border-bottom: 1px solid var(--hair);
  transition: background-color .12s;
}
.feat li.is-hot { background: var(--accent-soft); }
.feat code {
  margin-top: 2px;
  padding: 6px 0;
  border: 1px solid var(--ink);
  font: 700 11px/1 var(--mono);
  letter-spacing: .06em;
  text-align: center;
  transition: background-color .12s, color .12s, border-color .12s;
}
.feat li.is-hot code { background: var(--accent); border-color: var(--accent); color: #fff; }
.feat strong { display: block; font-size: 15.5px; line-height: 1.3; }
.feat .d { display: block; margin-top: 3px; font-size: 14.5px; line-height: 1.45; color: var(--ink-2); }
.feat .pn { margin-top: 4px; font: 11px/1 var(--mono); color: var(--ink-3); white-space: nowrap; }

/* Anwendungen */
.apps { list-style: none; }
.apps li { display: grid; grid-template-columns: 7px 1fr; gap: 14px; padding: 6px 0; font-size: 15px; line-height: 1.45; }
.apps li::before { content: ""; width: 7px; height: 7px; margin-top: .5em; background: var(--accent); }

/* Kontakt als Schriftfeld */
.tb {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--ink);
  border: 1.5px solid var(--ink);
}
.tb > div { padding: 12px 14px 15px; background: var(--sheet); min-width: 0; }
.tb .c2 { grid-column: span 2; }
.tb .c3 { grid-column: span 3; }
.tb dt {
  margin-bottom: 8px;
  font: 10px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.tb dd { font: 600 16px/1.3 var(--sans); overflow-wrap: anywhere; }
.tb a { color: inherit; text-decoration: none; border-bottom: 1.5px solid var(--accent); }
.tb a:hover { color: var(--accent); }
.tb .muted { color: var(--ink-2); font-weight: 400; }

/* Fusszeile */
.ft {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 24px;
  padding: 14px var(--gut);
  border-top: 1.5px solid var(--ink);
  font: 11.5px/1.4 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.cols + .ft { border-top: 0; }
.ft nav { display: flex; gap: 18px; }
.ft a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--ink); }
.ft a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Rechtliche Seite ---------- */

.legal-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 34px var(--gut) 30px;
  border-bottom: 1.5px solid var(--ink);
}
.legal-head h1 { font: 700 clamp(30px, 4.4vw, 46px)/1 var(--sans); letter-spacing: -.03em; }
.back { font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--ink); padding-bottom: 2px; }
.back:hover { color: var(--accent); border-color: var(--accent); }

.legal h2 { margin-bottom: 22px; font: 700 24px/1.1 var(--sans); letter-spacing: -.02em; }
.legal h3.sec { font-size: 13px; }
.legal address { font-style: normal; font-size: 15.5px; line-height: 1.6; }
.kv { display: grid; gap: 4px; font-size: 15.5px; }
.kv div { display: grid; grid-template-columns: 80px 1fr; gap: 10px; }
.kv dt { font: 11px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.legal a { color: inherit; text-decoration: none; border-bottom: 1.5px solid var(--accent); }
.legal a:hover { color: var(--accent); }
.legal .prose p { font-size: 15px; }
.stand { margin-top: 30px; font: 11px/1.4 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: .08em; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .hd { grid-template-columns: 1fr auto; }
  .hd-brand { grid-column: 1 / -1; border-bottom: 1px solid var(--ink); }
  .hd-flag { border-left: 0; }

  .hero { grid-template-columns: 1fr; }
  .pinout { border-left: 0; border-top: 1px solid var(--ink); }

  .cols { grid-template-columns: 1fr; }
  .cols > .block + .block { border-left: 0; border-top: 1px solid var(--ink); }
}

@media (max-width: 560px) {
  :root { --frame: 10px; --gut: 18px; }
  body { padding: 16px; }
  .zones { font-size: 0; }

  .hd { grid-template-columns: 1fr; }
  .hd-flag { border-bottom: 1px solid var(--ink); }
  .hd-meta { grid-template-columns: repeat(4, 1fr); border-left: 0; }
  .hd-meta div { padding: 10px; }

  .hero-text { padding: 36px var(--gut) 32px; }
  .lead { font-size: 16.5px; }
  .actions .btn { flex: 1 1 100%; justify-content: center; }

  .block { padding: 28px var(--gut) 30px; }
  .feat li { grid-template-columns: 54px 1fr; gap: 12px; }
  .feat .pn { display: none; }

  .tb { grid-template-columns: 1fr; }
  .tb .c2, .tb .c3 { grid-column: auto; }

  .ft { flex-direction: column; align-items: flex-start; }
}

@media print {
  body { padding: 0; background: none; }
  .frame { max-width: none; }
  .actions { display: none; }
}