/* ---------------------------------------------------------------------------
   digitalisierungspartner.pro
   Anmutung eines technischen Arbeitsblatts: helles Rasterpapier, klare Kanten,
   Petrol als einziges Signal, Haken und Kreuze als Wegweiser.
   Handgeschrieben, kein Framework, keine externen Abhängigkeiten.
   --------------------------------------------------------------------------- */

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-400-italic.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}

:root {
  --papier: #fbfbf8;
  --papier-tief: #f2f2ed;
  --raster: rgba(20, 40, 44, 0.055);
  --tinte: #14181c;
  --tinte-leise: #4e565d;
  --tinte-still: #7f878e;
  --signal: #0e5a5e;
  --signal-hell: #e2efee;
  --gruen: #1f7a4d;
  --rot: #b0362b;
  --marker: rgba(255, 214, 77, 0.5);
  --linie: #dfe1dd;
  --linie-stark: #c3c7c1;

  --satz: 38rem;
  --breit: 70rem;
  --saum: 1.5rem;

  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

body {
  margin: 0;
  color: var(--tinte);
  background-color: var(--papier);
  /* Rasterpapier: zwei feine Linienscharen im 24-Pixel-Raster */
  background-image:
    linear-gradient(to right, var(--raster) 1px, transparent 1px),
    linear-gradient(to bottom, var(--raster) 1px, transparent 1px);
  background-size: 24px 24px;
  font-family: var(--sans);
  font-size: 1.03rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

/* --- Achsen --------------------------------------------------------------- */
/* Textspalte und breite Blöcke stehen auf derselben linken Kante — die Seite
   hat eine einzige Achse, wie ein Arbeitsblatt. */
.satz {
  width: min(var(--breit), 100% - 2 * var(--saum));
  margin-inline: auto;
}
.satz > * { max-width: var(--satz); }
.satz > .marke { max-width: none; }
.breit { width: min(var(--breit), 100% - 2 * var(--saum)); margin-inline: auto; }
.block { padding-block: 2rem; }
.block-weit { padding-block: 2.6rem; }
.block-bild { padding-block: 1.4rem; }

/* --- Typografie ----------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.018em;
  margin: 0 0 0.75rem;
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 5.2vw, 2.85rem); letter-spacing: -0.032em; margin-bottom: 1.05rem; }
h2 { font-size: clamp(1.35rem, 3.2vw, 1.7rem); margin-top: 2.2rem; letter-spacing: -0.024em; }
h3 { font-size: 1.1rem; margin-top: 1.6rem; }
h1 + p, h2 + p, h3 + p { margin-top: 0; }

p { margin: 0 0 1.05rem; }

.vorspann { font-size: 1.2rem; line-height: 1.55; color: #2c3238; margin-bottom: 1.4rem; }
.klein { font-size: 0.89rem; color: var(--tinte-leise); line-height: 1.6; }

.marke {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.marke::after { content: ''; flex: 1; height: 1px; background: var(--linie-stark); }

mark, .merker {
  background: var(--marker);
  color: inherit;
  padding: 0.06em 0.15em;
  border-radius: 1px;
}

a { color: var(--signal); text-decoration-thickness: 1px; text-underline-offset: 0.17em; }
a:hover { color: #0a3f42; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }

strong { font-weight: 600; }

.pfeil { font-weight: 600; font-size: 0.97rem; text-decoration: none; border-bottom: 1.5px solid rgba(14, 90, 94, 0.35); }
.pfeil::after { content: ' →'; }
.pfeil:hover { border-bottom-color: var(--signal); }

.linie {
  width: min(var(--breit), 100% - 2 * var(--saum));
  margin: 0.8rem auto;
  height: 1px;
  background: var(--linie-stark);
}

.skip { position: absolute; left: -9999px; background: var(--signal); color: #fff; padding: 0.6rem 1rem; }
.skip:focus { left: 1rem; top: 1rem; z-index: 99; }

.satz ul, .satz ol { padding-left: 1.2rem; margin: 0 0 1.05rem; }
.satz li { margin-bottom: 0.42rem; }
.satz ul li::marker { color: var(--signal); }

/* --- Kopf ----------------------------------------------------------------- */
.kopf {
  border-bottom: 1px solid var(--linie-stark);
  background: rgba(251, 251, 248, 0.94);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.kopf-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.8rem;
  flex-wrap: wrap;
}
.kopf-name { text-decoration: none; color: inherit; display: flex; flex-direction: column; line-height: 1.15; }
.kopf-wort { font-weight: 600; font-size: 1.02rem; letter-spacing: -0.022em; }
.kopf-unter { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; color: var(--tinte-still); }
.kopf-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.kopf-nav a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--tinte-leise);
  text-decoration: none;
  padding-bottom: 0.2rem;
  border-bottom: 2px solid transparent;
}
.kopf-nav a:hover { color: var(--tinte); }
.kopf-nav a[aria-current='page'] { color: var(--signal); font-weight: 600; border-bottom-color: var(--signal); }

@media (max-width: 46rem) {
  .kopf { position: static; }
  .kopf-in { justify-content: center; text-align: center; }
  .kopf-name { align-items: center; }
  .kopf-nav { justify-content: center; gap: 1rem; }
}

/* --- Kapitelband ---------------------------------------------------------- */
.kapitelband {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--linie-stark);
  border: 1px solid var(--linie-stark);
  margin-top: 0.4rem;
}
.kb-feld {
  background: #fff;
  padding: 0.85rem 0.75rem 0.95rem;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: background 0.15s;
}
a.kb-feld:hover { background: var(--signal-hell); }
.kb-nr {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--signal);
  display: block;
  margin-bottom: 0.35rem;
}
.kb-titel { font-size: 0.83rem; line-height: 1.3; font-weight: 600; display: block; letter-spacing: -0.012em; }
.kb-aktiv { background: var(--signal); }
.kb-aktiv .kb-nr, .kb-aktiv .kb-titel { color: #fff; }
.kb-ende { background: var(--papier-tief); }
.kb-ende .kb-nr, .kb-ende .kb-titel { color: var(--tinte-still); }
.kb-legende { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.05em; color: var(--tinte-still); margin: 0.6rem 0 0; }
@media (max-width: 60rem) {
  .kapitelband { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 30rem) {
  .kapitelband { grid-template-columns: 1fr; }
}

/* --- Prüfkarten ----------------------------------------------------------- */
.karte {
  border: 1px solid var(--linie-stark);
  background: #fff;
  margin-bottom: 1.6rem;
  scroll-margin-top: 5.5rem;
}
.karte-kopf {
  border-bottom: 1px solid var(--linie);
  padding: 1.3rem 1.6rem 1.1rem;
  background: var(--papier-tief);
}
.karte-nr {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  display: block;
  margin-bottom: 0.35rem;
}
.karte-kopf h2 { margin: 0 0 0.15rem; font-size: 1.35rem; }
.karte-unter { margin: 0; color: var(--tinte-leise); font-size: 0.97rem; }
.karte-text { padding: 1.3rem 1.6rem 0.4rem; }
.karte-text p { margin-bottom: 0.8rem; }
.karte-spalten {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--linie);
  border-top: 1px solid var(--linie);
  margin-top: 1rem;
}
.karte-block { background: #fff; padding: 1.2rem 1.6rem 1.4rem; }
.karte-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin: 0 0 0.8rem;
}
.karte-label-rot { color: var(--rot); }
.karte-label-gruen { color: var(--gruen); }
.karte-schritt { margin: 0; font-size: 0.97rem; color: var(--tinte-leise); }
@media (max-width: 48rem) {
  .karte-spalten { grid-template-columns: 1fr; }
  .karte-kopf, .karte-text, .karte-block { padding-inline: 1.15rem; }
}

.kreuzliste { list-style: none; padding: 0 !important; margin: 0; }
.kreuzliste li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  color: var(--tinte-leise);
}
.kreuzliste li::before {
  content: '✕';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--rot);
  font-size: 0.85rem;
  font-weight: 600;
}
.hakenliste { list-style: none; padding: 0 !important; margin: 0 0 1.05rem; }
.hakenliste li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.6rem;
}
.hakenliste li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--gruen);
  font-weight: 600;
}

/* --- Faktenkasten --------------------------------------------------------- */
.fakten {
  border: 1px solid var(--signal);
  border-left-width: 4px;
  background: var(--signal-hell);
  padding: 1.3rem 1.5rem 1.4rem;
  margin: 1.4rem 0;
}
.fakten-titel {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 0.9rem;
}
.fakten ul { list-style: none; padding: 0; margin: 0 0 1rem; }
.fakten li {
  position: relative;
  padding-left: 1.35rem;
  margin-bottom: 0.55rem;
  font-size: 0.97rem;
}
.fakten li::before {
  content: '';
  position: absolute;
  left: 0.15rem;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--signal);
}
.fakten-quelle {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--tinte-leise);
  margin: 0;
  border-top: 1px solid rgba(14, 90, 94, 0.25);
  padding-top: 0.75rem;
}

/* --- Merksatz ------------------------------------------------------------- */
.merksatz {
  font-size: 1.24rem;
  line-height: 1.5;
  font-weight: 400;
  border-left: 3px solid var(--signal);
  padding: 0.2rem 0 0.2rem 1.4rem;
  margin: 1.7rem 0;
  color: #23292e;
}
.merksatz p:last-child { margin-bottom: 0; }

/* --- Raster / Karten ------------------------------------------------------ */
.raster {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1px;
  background: var(--linie-stark);
  border: 1px solid var(--linie-stark);
  margin-top: 1.3rem;
}
.feld { background: #fff; padding: 1.3rem 1.4rem 1.4rem; }
.feld-nr { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; color: var(--signal); display: block; margin-bottom: 0.5rem; }
.feld h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.feld p { font-size: 0.95rem; color: var(--tinte-leise); margin-bottom: 0; }

/* --- Zeitstrahl E-Rechnung ------------------------------------------------ */
.termine { border-top: 1px solid var(--linie-stark); margin: 1.4rem 0; }
.termin {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1.2rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--linie);
}
.termin .datum { font-family: var(--mono); font-size: 0.85rem; color: var(--signal); font-weight: 500; }
.termin p { margin: 0; font-size: 0.97rem; }
.termin.vergangen .datum { color: var(--tinte-still); }
@media (max-width: 34rem) { .termin { grid-template-columns: 1fr; gap: 0.2rem; } }

/* --- Bilder --------------------------------------------------------------- */
.fig { margin: 0; width: min(var(--breit), 100% - 2 * var(--saum)); margin-inline: auto; }
.fig-schmal img { max-width: 30rem; }
.fig-schmal figcaption { max-width: 30rem; }
.fig img { display: block; width: 100%; height: auto; border: 1px solid var(--linie-stark); }
.fig figcaption { font-size: 0.87rem; color: var(--tinte-still); margin-top: 0.6rem; line-height: 1.55; max-width: 36rem; }

/* --- Knöpfe --------------------------------------------------------------- */
.knopf {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.98rem;
  background: var(--signal);
  color: #fff;
  padding: 0.72rem 1.5rem;
  text-decoration: none;
  border: 1px solid var(--signal);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s;
}
.knopf:hover { background: #0a3f42; color: #fff; }
.knopf-still { background: #fff; color: var(--signal); }
.knopf-still:hover { background: var(--signal-hell); color: var(--signal); }

.kontaktzeile { font-family: var(--mono); font-size: 0.95rem; line-height: 1.9; }

/* --- Formular ------------------------------------------------------------- */
.formular { display: grid; gap: 1rem; margin-top: 1.4rem; }
.formular label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 0.3rem; }
.formular input, .formular textarea, .formular select {
  width: 100%;
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--tinte);
  background: #fff;
  border: 1px solid var(--linie-stark);
  border-radius: 2px;
  padding: 0.62rem 0.75rem;
}
.formular input:focus, .formular textarea:focus, .formular select:focus { border-color: var(--signal); outline: none; }
.formular textarea { min-height: 9rem; resize: vertical; }
.honig { position: absolute; left: -9999px; }
.pflicht { color: var(--rot); }

.zwei {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 56rem) { .zwei { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 2.5rem; align-items: start; } }

.notiz {
  border: 1px solid var(--linie-stark);
  background: #fff;
  padding: 1.2rem 1.4rem 1.3rem;
}
.notiz h3 { margin-top: 0; }
.notiz p:last-child { margin-bottom: 0; }

/* --- Recht ---------------------------------------------------------------- */
.recht h2 { font-size: 1.1rem; margin-top: 1.8rem; }
.recht p { font-size: 0.96rem; }

/* --- Fuß ------------------------------------------------------------------ */
.fuss { border-top: 1px solid var(--linie-stark); margin-top: 3.2rem; padding-top: 2.4rem; background: var(--papier-tief); }
.fuss-in { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: 2rem; padding-bottom: 2rem; }
.fuss-titel { font-family: var(--mono); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; color: var(--signal); margin: 0 0 0.7rem; }
.fuss ul { list-style: none; margin: 0 0 0.9rem; padding: 0; }
.fuss li { margin-bottom: 0.32rem; }
.fuss a { color: var(--tinte-leise); text-decoration: none; font-size: 0.9rem; }
.fuss a:hover { color: var(--signal); }
.fuss-klein { font-size: 0.8rem; color: var(--tinte-still); line-height: 1.6; margin: 0; }
.me-logo { display: block; width: 6.5rem; height: auto; margin-bottom: 0.9rem; }
.fuss-unten {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--linie);
  padding-block: 1rem 1.6rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--tinte-still);
}

/* --- Druck ---------------------------------------------------------------- */
@media print {
  body { background: #fff; font-size: 10.5pt; }
  .kopf, .fuss, .skip { display: none !important; }
  .karte, .fakten, .notiz { border: 1px solid #999; background: none; break-inside: avoid; }
  a { color: #111; }
}