/* =================================================================
   OneNine Wissen · Chat-Seite (Plan 2026-10-13-wissenssystem-v1-chat, Step 6)
   Tokens, Schriften, Wortzeichen und Buttons mit denselben Werten wie
   website/assets/css/site.css (eigene Datei, kein Build-Schritt).
   Die Schriften kopiert das Ausrollen aus website/assets/fonts/ nach /assets/fonts/.
   ================================================================= */

@font-face { font-family: "Plex Sans"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Sans"; font-weight: 500; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Sans"; font-weight: 600; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 700; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-mono-latin-700-normal.woff2") format("woff2"); }

/* ---------- Tokens (gleich site.css) ---------- */
:root {
  --bg:          #F3F1EC;
  --bg-sunken:   #EAE7E0;
  --surface:     #FBFAF7;
  --ink:         #171B1A;
  --ink-2:       #3F4744;
  --ink-3:       #5F6965;
  --line:        #D8D4CB;
  --line-strong: #B9B4A9;
  --accent:      #1D6670;
  --accent-ink:  #FFFFFF;
  --accent-soft: #DCE8E6;
  --ok:          #2F6B45;
  --warn:        #8A5A0B;
  --logo-dot:    #B8BDB7;
  --logo-core:   #1D6670;

  --font-sans: "Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: 16px;
  --radius: 6px;
  --shadow: 0 1px 0 rgba(23, 27, 26, 0.04), 0 8px 24px -12px rgba(23, 27, 26, 0.18);
  --verlauf-breite: 18rem;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:          #121615;
    --bg-sunken:   #0D100F;
    --surface:     #181D1B;
    --ink:         #ECEAE4;
    --ink-2:       #C3C8C4;
    --ink-3:       #8E9692;
    --line:        #2A312E;
    --line-strong: #3B4440;
    --accent:      #6FB5BA;
    --accent-ink:  #0D100F;
    --accent-soft: #1C2D2E;
    --ok:          #7CC394;
    --warn:        #E0B25E;
    --logo-dot:    #8C9793;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 8px 24px -12px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg:          #121615;
  --bg-sunken:   #0D100F;
  --surface:     #181D1B;
  --ink:         #ECEAE4;
  --ink-2:       #C3C8C4;
  --ink-3:       #8E9692;
  --line:        #2A312E;
  --line-strong: #3B4440;
  --accent:      #6FB5BA;
  --accent-ink:  #0D100F;
  --accent-soft: #1C2D2E;
  --ok:          #7CC394;
  --warn:        #E0B25E;
  --logo-dot:    #8C9793;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 8px 24px -12px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

@media (min-width: 720px) { :root { --gutter: 32px; } }

/* ---------- Basis ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: anywhere;
}
svg { display: block; max-width: 100%; }
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; font-weight: 600; margin: 0; hyphens: auto; }
p { margin: 0 0 1em; }
[hidden] { display: none !important; }
.mono { font-family: var(--font-mono); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: var(--gutter); top: -3rem; background: var(--ink); color: var(--bg); padding: 0.5rem 0.75rem; z-index: 100; }
.skip-link:focus { top: 0.5rem; }

/* ---------- Wortzeichen (gleich site.css) ---------- */
.wordmark {
  --wm: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: calc(var(--wm) * 0.62);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-mono);
  line-height: 1;
}
.wordmark:hover { text-decoration: none; }
.wm-mark { width: calc(var(--wm) * 1.32); height: calc(var(--wm) * 1.32); flex: none; fill: var(--logo-dot); }
.wm-core { fill: var(--logo-core); }
.wm-text { display: inline-flex; flex-direction: column; align-items: flex-start; gap: calc(var(--wm) * 0.26); }
.wm-name { font-size: var(--wm); font-weight: 700; white-space: nowrap; }
.wm-one { color: var(--ink); }
.wm-nine { color: var(--ink-3); }
.wm-sys {
  font-size: calc(var(--wm) * 0.34);
  font-weight: 400;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 1.359em;
  margin-right: -1.359em;
  white-space: nowrap;
}
.wordmark--lg { --wm: 2.25rem; }
@media (max-width: 400px) { .kopf .wordmark { --wm: 1.05rem; } }

/* ---------- Buttons (gleich site.css) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.625rem 1.125rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: 500 1rem/1.2 var(--font-sans);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 86%, var(--ink)); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--ink-3); }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: transparent; padding-left: 0.5rem; padding-right: 0.5rem; }
.btn-ghost:hover { color: var(--ink); }
.btn-sm { min-height: 2.5rem; padding: 0.5rem 0.875rem; font-size: 0.875rem; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* ---------- Anmeldeseite ---------- */
.anmelde-seite { min-height: 100vh; display: grid; place-items: center; padding: 2rem var(--gutter); }
.anmelden {
  width: 100%;
  max-width: 28rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}
@media (max-width: 400px) { .anmelden .wordmark--lg { --wm: 1.75rem; } }
.anmelden h1 { font-size: 1.75rem; margin-top: 0.5rem; }
.anmelden p { margin: 0; color: var(--ink-2); }
.anmelden-hinweis { border-left: 3px solid var(--accent); padding-left: 0.75rem; }
.anmelden-hinweis.ist-fehler { border-left-color: var(--warn); }
.anmelden-knopf { width: 100%; }

/* ---------- Kopfzeile ---------- */
.kopf {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3.75rem;
  padding: 0.5rem var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.kopf-titel { white-space: nowrap; font-family: var(--font-mono); font-size: 0.8125rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); padding-left: 0.75rem; border-left: 1px solid var(--line); }
.kopf-aktionen { margin-left: auto; display: flex; align-items: center; gap: 0.25rem; min-width: 0; }
.kopf-nutzer { display: none; font-size: 0.8125rem; color: var(--ink-3); margin-right: 0.5rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 22rem; }
@media (min-width: 900px) { .kopf-nutzer { display: inline; } }
@media (max-width: 479px) { .kopf { gap: 0.5rem; } .kopf-titel { display: none; } .kopf-aktionen .btn-sm { padding-left: 0.625rem; padding-right: 0.625rem; } }

/* ---------- Rahmen: Verlauf links, Chat rechts; schmal als zwei Ansichten ---------- */
.rahmen { display: block; }
.verlauf { display: none; padding: 1rem var(--gutter) 2rem; }
.zeigt-verlauf .verlauf { display: block; }
.zeigt-verlauf .chat { display: none; }
@media (min-width: 900px) {
  .rahmen { display: grid; grid-template-columns: var(--verlauf-breite) minmax(0, 1fr); align-items: start; }
  .verlauf, .zeigt-verlauf .verlauf { display: block; position: sticky; top: 3.75rem; max-height: calc(100vh - 3.75rem); overflow-y: auto; border-right: 1px solid var(--line); padding: 1.25rem 1rem 2rem; }
  .zeigt-verlauf .chat { display: flex; }
  .verlauf-knopf, .verlauf-zurueck { display: none; }
}

.verlauf-kopf { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.75rem; }
.verlauf h2 { font-size: 0.8125rem; font-family: var(--font-mono); font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); }
.verlauf-leer, .verlauf-fehler { font-size: 0.9375rem; color: var(--ink-3); }
.verlauf-liste { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-direction: column; gap: 0.25rem; }
.verlauf-eintrag {
  appearance: none;
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.5rem 0.625rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
  line-height: 1.4;
  cursor: pointer;
}
.verlauf-eintrag:hover { background: var(--bg-sunken); }
.verlauf-eintrag[aria-current="true"] { border-color: var(--line-strong); background: var(--surface); }
.verlauf-frage { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.verlauf-zeit { display: block; font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-3); margin-top: 0.125rem; }

/* ---------- Chat ---------- */
.chat { display: flex; flex-direction: column; min-height: calc(100vh - 3.75rem); max-width: 52rem; width: 100%; margin: 0 auto; padding: 1.25rem var(--gutter) 0; }
.meldung { background: var(--surface); border: 1px solid var(--warn); border-left-width: 4px; border-radius: var(--radius); padding: 0.75rem 1rem; color: var(--ink); }
.gespraech { flex: 1; display: flex; flex-direction: column; gap: 1.5rem; padding-bottom: 1.5rem; }
.leer h1 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.leer p { color: var(--ink-2); max-width: 40rem; }

.austausch { display: flex; flex-direction: column; gap: 0.75rem; scroll-margin-top: 4.75rem; }
.austausch:focus, .austausch-antwort:focus { outline: none; }
.austausch:focus-visible, .austausch-antwort:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.austausch-frage {
  align-self: flex-end;
  max-width: min(100%, 38rem);
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 0.625rem 0.875rem;
  white-space: pre-line;
  margin: 0;
}
.austausch-herkunft { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-3); align-self: flex-end; margin: 0; }
.austausch-antwort {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  box-shadow: var(--shadow);
}
.stand { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; color: var(--ink-2); margin: 0; }
.stand-text::before {
  content: "";
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 0.1em;
  animation: puls 1.4s ease-in-out infinite;
}
@keyframes puls { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }
.stand-schritte { list-style: none; margin: 0.75rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-3); }
.stand-schritte li[aria-current="step"] { color: var(--ink); font-weight: 700; }
.stand-schritte li.erledigt { color: var(--ok); }

.antwort-text p { white-space: pre-line; margin: 0 0 0.875em; }
.antwort-text p:last-child { margin-bottom: 0; }
.marke { font-family: var(--font-mono); font-size: 0.8125em; text-decoration: none; padding: 0 0.1em; white-space: nowrap; }
.marke:hover { text-decoration: underline; }
.ohne-beleg { font-family: var(--font-mono); font-size: 0.8125em; color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, transparent); border-radius: 3px; padding: 0 0.3em; white-space: nowrap; }
.antwort-hinweis { margin: 0.875rem 0 0; font-size: 0.9375rem; color: var(--ink-2); border-left: 3px solid var(--warn); padding-left: 0.75rem; }
.antwort-system { color: var(--ink-2); margin: 0; }
.ist-fehler .antwort-system { border-left: 3px solid var(--warn); padding-left: 0.75rem; }

.abschnitt-titel { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); margin: 1.25rem 0 0.5rem; }
.belege, .naechste { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.beleg { border-top: 1px solid var(--line); padding-top: 0.5rem; scroll-margin-top: 5rem; }
.beleg:target, .beleg.ist-markiert { background: color-mix(in srgb, var(--accent-soft) 60%, transparent); }
.beleg-kopf { display: flex; flex-wrap: wrap; gap: 0.25rem 0.625rem; align-items: baseline; }
.beleg-nr { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--accent); }
.beleg-titel { font-weight: 500; }
.beleg-ort { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--ink-3); }
.beleg details { margin-top: 0.25rem; }
.beleg summary { cursor: pointer; font-size: 0.875rem; color: var(--ink-2); min-height: 2rem; display: list-item; padding-top: 0.25rem; }
.wortlaut { margin: 0.5rem 0 0.25rem; padding: 0.5rem 0.75rem; border-left: 3px solid var(--line-strong); background: var(--bg-sunken); white-space: pre-line; font-size: 0.9375rem; color: var(--ink-2); }
.naechste li { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--ink-2); }
.naechste .naechste-titel { font-family: var(--font-sans); font-size: 0.9375rem; color: var(--ink); margin-right: 0.5rem; }

.antwort-fuss { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1rem; margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--line); }
.antwort-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-3); margin: 0; }
.bewertung { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem; }
.daumen {
  appearance: none;
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
}
.daumen:hover { border-color: var(--line-strong); color: var(--ink); }
.daumen:disabled { opacity: 0.45; cursor: not-allowed; }
.daumen:disabled:hover { border-color: var(--line); color: var(--ink-2); }
.daumen[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.daumen svg { width: 1.125rem; height: 1.125rem; }
.daumen-runter svg { transform: scaleY(-1); }
.notiz-info { font-size: 0.8125rem; color: var(--ink-3); }
.notiz-info:empty { display: none; }
.bewertung-unklar { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.5rem; font-size: 0.8125rem; color: var(--warn); }
.bewertung-stand { font-size: 0.8125rem; color: var(--ink-3); margin-left: 0.25rem; }
.notiz { width: 100%; }
.notiz summary { cursor: pointer; font-size: 0.875rem; color: var(--ink-2); min-height: 2rem; display: list-item; }
.notiz textarea { width: 100%; margin-top: 0.5rem; }
.notiz-abweichung-text { white-space: pre-wrap; }
.notiz-abweichung { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.75rem; margin: 0.5rem 0 0; font-size: 0.8125rem; color: var(--warn); }
.notiz-leiste { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-top: 0.5rem; }

/* ---------- Eingabe ---------- */
textarea {
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.625rem 0.75rem;
  resize: vertical;
  min-height: 3rem;
}
textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.eingabe {
  position: sticky;
  bottom: 0;
  background: var(--bg);
  padding: 0.75rem 0 0.75rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.eingabe textarea { width: 100%; max-height: 40vh; }
.eingabe-leiste { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; }
.eingabe-hilfe { font-size: 0.8125rem; color: var(--ink-3); flex: 1 1 12rem; }
.eingabe-zaehler { font-size: 0.75rem; color: var(--ink-3); }
.eingabe-zaehler.ist-voll { color: var(--warn); }
/* schmal: Hinweis nur mit Bildschirmtastatur („Senden mit dem Knopf.“), sonst ausgeblendet */
@media (max-width: 480px) and (hover: hover), (max-width: 480px) and (pointer: fine) { .eingabe-hilfe { display: none; } .eingabe-leiste { justify-content: flex-end; } }
.wissen-hinweis { font-size: 0.8125rem; color: var(--ink-3); margin: 0; padding: 0 0 1rem; }
.wissen-hinweis strong { color: var(--ink-2); font-weight: 500; }