/* =========================================================
   Richenberger Informatik GmbH – zentrales Stylesheet
   Wird von jeder Seite geladen. Einmal ändern, überall wirksam.
   ========================================================= */

html, body { margin: 0; padding: 0; }
  img { max-width: 100%; }
  [hidden] { display: none !important; }

/* single light theme, committed to the wordmark: white ground, black text, one red */
  :root {
    color-scheme: light;
    --bg: #FFFFFF;
    --panel: #FFFFFF;
    --panel-2: #FAFAFA;
    --ink: #101010;
    --ink-2: #545454;
    --ink-3: #8A8A8A;
    --rule: #ECECEC;
    --rule-2: #D4D4D4;
    --accent: #D8000C;
    --accent-ink: #FFFFFF;
    --accent-dim: #F3B3B6;
    --logo-red: #E30613;

    --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
    --body: "IBM Plex Sans", system-ui, "Segoe UI", Arial, sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

    --rail: 104px;
    --wrap: 1140px;
  }

  /* =========================================================
     Dunkelmodus. Greift, wenn das Gerät auf "dunkel" steht.
     Nur Farbwerte werden neu gesetzt, kein Baustein doppelt.
     Dadurch verzichtet der Browser auf sein eigenes Invertieren.
     ========================================================= */
  @media (prefers-color-scheme: dark) {
    :root {
      color-scheme: dark;
      --bg: #0F0F0F;          /* nicht reines Schwarz: ruhiger für die Augen */
      --panel: #161616;
      --panel-2: #1C1C1C;
      --ink: #F2F2F2;
      --ink-2: #ABABAB;
      --ink-3: #7E7E7E;
      --rule: #262626;
      --rule-2: #3A3A3A;
      --accent: #FF453A;      /* aufgehelltes Rot, auf dunklem Grund lesbar */
      --accent-ink: #14090A;
      --accent-dim: #7A1C18;
      --logo-red: #FF453A;
    }
  }

  * { box-sizing: border-box; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--body);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; letter-spacing: -0.02em; }
  p { margin: 0; }
  a { color: inherit; }
  .mono { font-family: var(--mono); }

  .wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }

  /* ---------- header ---------- */
  .site-head {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 20;
    background: var(--bg);
    border-bottom: 1px solid var(--rule-2);
  }
  .head-in { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding-block: 14px; }
  .mark { margin-right: auto; text-decoration: none; display: grid; gap: 2px; }
  .mark .n { font-family: var(--display); font-weight: 700; font-size: clamp(17px, 2.4vw, 21px); letter-spacing: -0.035em; color: var(--ink); }
  .mark .n .red { color: var(--logo-red); }
  .mark .n .gmbh { font-weight: 500; letter-spacing: -0.01em; margin-left: 0.28em; color: var(--ink); }
  .mark .t { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3); }
  .nav { display: flex; gap: 4px; font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
  .nav a { text-decoration: none; color: var(--ink-2); padding: 6px 10px; border: 1px solid transparent; }
  .nav a:hover { color: var(--accent); border-color: var(--rule-2); }
  @media (max-width: 800px) {
    .head-in { gap: 10px 14px; }
    .mark .n { font-size: clamp(15px, 4.4vw, 19px); }
    .mark .t { font-size: 9.5px; letter-spacing: .12em; }
    .nav {
      order: 3; width: 100%;
      overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none;
      gap: 6px; padding-bottom: 2px;
    }
    .nav::-webkit-scrollbar { display: none; }
    .nav { font-size: 11px; letter-spacing: .04em; }
    .nav a { flex: 0 0 auto; border-color: var(--rule); padding: 7px 9px; }
  }

  /* ---------- section frame with left rail ---------- */
  .band { border-bottom: 1px solid var(--rule); }
  .band-in {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: 0 28px;
    padding-block: clamp(48px, 7vw, 82px);
  }
  .rail { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); display: grid; gap: 6px; align-content: start; }
  .rail .id { color: var(--accent); font-weight: 600; }
  .rail::after { content: ""; height: 1px; background: var(--rule-2); margin-top: 8px; }
  @media (max-width: 760px) {
    .band-in { grid-template-columns: 1fr; gap: 18px; }
    .rail { display: flex; gap: 12px; align-items: baseline; }
    .rail::after { display: none; }
  }

  .sec-title { font-size: clamp(25px, 3.2vw, 33px); font-weight: 600; max-width: 30ch; }
  .sec-lede { color: var(--ink-2); max-width: 62ch; margin-top: 12px; font-size: 16.5px; }

  /* ---------- hero ---------- */
  .hero-in { padding-block: clamp(44px, 7vw, 80px) clamp(40px, 6vw, 70px); }
  .hero h1 {
    font-size: clamp(33px, 6vw, 62px);
    font-weight: 700;
    line-height: 1.04;
    max-width: 22ch;
  }
  .hero h1 em { font-style: normal; color: var(--accent); }
  .hero .lede { color: var(--ink-2); max-width: 54ch; font-size: clamp(17px, 1.9vw, 19.5px); margin-top: 24px; }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
  .btn {
    font-family: var(--mono); font-size: 13px; letter-spacing: .06em; text-transform: uppercase;
    text-decoration: none; padding: 13px 20px;
    border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  }
  .btn.ghost { background: transparent; color: var(--ink); border-color: var(--rule-2); }
  .btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

  .metrics {
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--rule-2); margin-top: clamp(38px, 6vw, 58px);
  }
  .metric { padding: 20px 20px 20px 0; border-right: 1px solid var(--rule); display: grid; gap: 6px; align-content: start; }
  .metric:last-child { border-right: 0; }
  .metric dt { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
  .metric dd { margin: 0; font-family: var(--display); font-size: 19px; font-weight: 600; font-variant-numeric: tabular-nums; }
  .metric dd small { display: block; font-family: var(--body); font-size: 14px; font-weight: 400; color: var(--ink-3); margin-top: 3px; line-height: 1.45; }
  @media (max-width: 860px) { .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } .metric:nth-child(2) { border-right: 0; } }
  @media (max-width: 520px) { .metrics { grid-template-columns: 1fr; } .metric { border-right: 0; border-bottom: 1px solid var(--rule); } .metric:last-child { border-bottom: 0; } }

  /* ---------- services as spec rows ---------- */
  .spec { margin-top: 34px; border-top: 1px solid var(--rule-2); }
  .row {
    display: grid;
    grid-template-columns: 44px minmax(0, 1.5fr) minmax(0, 1fr) 142px;
    gap: 22px;
    padding-block: 26px;
    border-bottom: 1px solid var(--rule);
    align-items: start;
  }
  .row .idx { font-family: var(--mono); font-size: 12px; color: var(--accent); padding-top: 4px; font-variant-numeric: tabular-nums; }
  .row h3 { font-size: 19px; font-weight: 600; }
  .row .desc { color: var(--ink-2); font-size: 16px; margin-top: 8px; }
  .row .out { display: grid; gap: 7px; }
  .row .out span { font-size: 15px; color: var(--ink-2); padding-left: 14px; position: relative; }
  .row .out span::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }
  .row .lot { font-family: var(--mono); font-size: 12.5px; color: var(--ink-3); text-align: right; line-height: 1.7; }
  .row .lot b { display: block; color: var(--ink); font-weight: 500; }
  @media (max-width: 900px) {
    .row { grid-template-columns: 30px minmax(0, 1fr); gap: 6px 14px; }
    .row .out, .row .lot { grid-column: 2; }
    .row .out { margin-top: 12px; }
    .row .lot { text-align: left; margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--rule-2); }
  }

  /* ---------- process ---------- */
  .track { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 34px; }
  .stage { padding: 0 22px 0 0; display: grid; gap: 10px; align-content: start; }
  .stage .bar { height: 4px; background: var(--accent); margin-bottom: 14px; }
  .stage:nth-child(2) .bar { background: var(--accent-dim); }
  .stage:nth-child(3) .bar { background: var(--rule-2); }
  .stage .st { font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
  .stage h3 { font-size: 18px; font-weight: 600; }
  .stage p { color: var(--ink-2); font-size: 15.5px; }
  .stage .cost { font-family: var(--mono); font-size: 12.5px; color: var(--ink-3); }
  @media (max-width: 800px) { .track { grid-template-columns: 1fr; gap: 30px; } .stage { padding-right: 0; } }

  /* ---------- about ---------- */
  .about-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 52px); margin-top: 8px; }
  .prose { color: var(--ink-2); max-width: 60ch; display: grid; gap: 15px; }
  .prose strong { color: var(--ink); font-weight: 600; }
  .side { display: grid; gap: 20px; align-content: start; }
  .side h3 { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
  .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
  .tags span { font-family: var(--mono); font-size: 12px; color: var(--ink-2); border: 1px solid var(--rule); background: var(--panel); padding: 5px 9px; }
  .rules { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 15.5px; color: var(--ink-2); }
  .rules li { padding-left: 20px; position: relative; }
  .rules li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); font-size: 13px; }
  @media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

  /* ---------- contact ---------- */
  .contact { background: var(--panel); border: 1px solid var(--rule-2); margin-top: 26px; }
  .contact-in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr); }
  .contact-l { padding: clamp(24px, 3.4vw, 38px); border-right: 1px solid var(--rule); }
  .contact-l h2 { font-size: clamp(23px, 2.9vw, 30px); font-weight: 600; }
  .contact-l p { color: var(--ink-2); margin-top: 14px; font-size: 16.5px; }
  .contact-r { padding: clamp(24px, 3.4vw, 38px); display: grid; gap: 20px; align-content: start; background: var(--panel-2); }
  .field { display: grid; gap: 5px; }
  .field .k { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
  .field .v { font-family: var(--mono); font-size: 15.5px; overflow-wrap: anywhere; }
  .copy {
    font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase;
    border: 1px solid var(--rule-2); background: transparent; color: var(--ink-2);
    padding: 6px 10px; cursor: pointer; justify-self: start; margin-top: 6px;
  }
  .copy:hover { border-color: var(--accent); color: var(--accent); }
  @media (max-width: 780px) { .contact-in { grid-template-columns: 1fr; } .contact-l { border-right: 0; border-bottom: 1px solid var(--rule); } }

  /* ---------- footer ---------- */
  .site-foot { padding-block: 30px 42px; }
  .foot-in { display: flex; flex-wrap: wrap; gap: 16px 42px; justify-content: space-between; font-family: var(--mono); font-size: 12px; color: var(--ink-3); line-height: 1.8; }
  .foot-in div { display: grid; }
  .foot-in b { color: var(--ink-2); font-weight: 500; }

  .todo { font-family: var(--mono); font-size: 0.86em; color: var(--ink-3); border-bottom: 1px dashed var(--rule-2); background: var(--panel-2); padding: 0 3px; white-space: nowrap; }

  :where(a, button):focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  @media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* =========================================================
   Ab hier: Bausteine, die erst mit den Unterseiten dazukamen.
   Bei einer einzelnen Seite gab es sie noch nicht.
   ========================================================= */

/* Kopfbereich einer Unterseite (schmaler als der Hero der Startseite) */
.page-head { border-bottom: 1px solid var(--rule); }
.page-head-in { padding-block: clamp(36px, 5.5vw, 62px); }
.page-head .kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent);
}
.page-head h1 { font-size: clamp(30px, 4.6vw, 46px); font-weight: 700; margin-top: 12px; max-width: 24ch; }
.page-head p { color: var(--ink-2); max-width: 60ch; margin-top: 16px; font-size: 17.5px; }

/* Fliesstext für Impressum, Datenschutz und ähnliche Textseiten */
.legal { max-width: 68ch; display: grid; gap: 26px; }
.legal section { display: grid; gap: 10px; }
.legal h2 { font-size: 20px; font-weight: 600; }
.legal h3 { font-size: 16px; font-weight: 600; margin-top: 8px; }
.legal p, .legal li { color: var(--ink-2); font-size: 16.5px; }
.legal ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.legal dl { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 8px 20px; margin: 0; }
.legal dt { font-family: var(--mono); font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); padding-top: 3px; }
.legal dd { margin: 0; color: var(--ink-2); font-size: 16.5px; }
.legal a { color: var(--accent); }
@media (max-width: 620px) { .legal dl { grid-template-columns: 1fr; gap: 2px 0; } .legal dt { margin-top: 12px; } }

/* Hinweiskasten, z. B. "Entwurf, juristisch prüfen lassen" */
.note-box {
  border-left: 3px solid var(--accent); background: var(--panel-2);
  padding: 16px 18px; font-size: 15.5px; color: var(--ink-2);
}

/* Detailblock einer einzelnen Leistung auf der Unterseite */
.detail { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); gap: 0 28px; padding-block: clamp(36px, 5vw, 56px); border-bottom: 1px solid var(--rule); }
.detail:last-child { border-bottom: 0; }
.detail .num { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.detail h2 { font-size: clamp(22px, 2.8vw, 28px); font-weight: 600; }
.detail .intro { color: var(--ink-2); max-width: 62ch; margin-top: 12px; font-size: 16.5px; }
.detail .cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; margin-top: 26px; }
.detail .cols h3 { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.detail .cols ul { margin: 10px 0 0; padding-left: 18px; display: grid; gap: 7px; color: var(--ink-2); font-size: 15.5px; }
@media (max-width: 760px) { .detail { grid-template-columns: 1fr; gap: 16px; } .detail .cols { grid-template-columns: 1fr; gap: 20px; } }

/* Zurück-Verweis am Fuss einer Unterseite */
.back { font-family: var(--mono); font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--rule-2); }
.back:hover { color: var(--accent); border-color: var(--accent); }

/* Verweise in der Fusszeile (Impressum, Datenschutz) */
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.foot-links a { color: var(--ink-3); text-decoration: none; border-bottom: 1px solid transparent; }
.foot-links a:hover { color: var(--accent); border-color: var(--accent); }

/* Markierung der aktiven Seite in der Navigation */
.nav a[aria-current="page"] { color: var(--accent); border-color: var(--rule-2); }
/* --- Beitragsliste auf der Übersichtsseite --- */
.post-list { display: grid; border-top: 1px solid var(--rule-2); }
.post {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 6px 28px;
  padding-block: 28px;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.post time {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .04em;
  color: var(--ink-3); padding-top: 5px; font-variant-numeric: tabular-nums;
}
.post h2 { font-size: 21px; font-weight: 600; }
.post h2 a { text-decoration: none; }
.post h2 a:hover { color: var(--accent); }
.post p { color: var(--ink-2); font-size: 16.5px; margin-top: 8px; max-width: 62ch; }
.post .more {
  font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent); text-decoration: none; margin-top: 12px; display: inline-block;
}
.post .more:hover { border-bottom: 1px solid var(--accent); }
@media (max-width: 700px) {
  .post { grid-template-columns: 1fr; gap: 4px; }
  .post time { padding-top: 0; }
}

/* --- Einzelner Beitrag --- */
.article { max-width: 68ch; }
.article .meta {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .04em;
  color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 6px 18px;
}
.article > * + * { margin-top: 20px; }
.article h2 { font-size: 22px; font-weight: 600; margin-top: 38px; }
.article h3 { font-size: 18px; font-weight: 600; margin-top: 28px; }
.article p { color: var(--ink-2); font-size: 17.5px; line-height: 1.7; }
.article strong { color: var(--ink); font-weight: 600; }
.article a { color: var(--accent); }
.article ul, .article ol { color: var(--ink-2); font-size: 17px; padding-left: 22px; display: grid; gap: 8px; }
.article blockquote {
  margin: 0; border-left: 3px solid var(--accent); padding: 4px 0 4px 20px;
  color: var(--ink); font-size: 19px; line-height: 1.55;
}
.article figure { margin: 0; }
.article figcaption { font-family: var(--mono); font-size: 12px; color: var(--ink-3); margin-top: 8px; }
.article-foot {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--rule);
  display: flex; flex-wrap: wrap; gap: 14px 26px; justify-content: space-between; align-items: center;
}