/* ============================================================
   KOBOLD LERNMODUS + MODUL-ABSCHLUSSTEST — Styles
   Extrahiert aus app.html. Eingebunden via:
     <link rel="stylesheet" href="/app/lernbegleiter.css">
   CSS-Variablen werden aus :root in app.html geerbt.

   Enthält:
   - Modul-Abschlusstest Panel  (.mtest-*)
   - Kobold Lernmodus Overlay   (.lb-overlay, .lb-main, .lb-chat-col)
   - Docs-Panel                  (.lb-docs-*)
   - Sketch-Panel               (.lb-sketch-*)
   - Header / Badge             (.lb-header, .lb-fach-badge, .lb-modul-name)
   - Chat-Nachrichten           (.lb-msg, .markdown-body Overrides)
   - Schnellauswahl-Chips       (.lb-chips, .lb-chip)
   - Footer / Eingabefeld       (.lb-footer, .lb-textarea)
   - Allgemeine Helfer          (.module-actions, .user-area, .btn-admin, .btn-logout)
   - Responsive Breakpoints     (@media max-width 768px)
   ============================================================ */

    /* ─── Modul-Abschlusstest Panel ─────────────────────── */
    .mtest-panel {
      display: none;
      position: fixed;
      inset: 0;
      background: var(--bg);        /* var(--bg1) war undefined → transparent */
      z-index: 900;
      overflow-y: auto;
      padding-bottom: 40px;
    }
    .mtest-panel.open { display: block; }
    .mtest-inner {
      max-width: 720px;
      margin: 0 auto;
      padding: 24px 16px;
      background: var(--bg2);       /* Rahmen um alle Fragen */
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-top: 16px;
      margin-bottom: 24px;
    }

    .mtest-question {
      background: var(--bg2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px;
      margin-bottom: 12px;
      transition: border-color .2s;
    }
    .mtest-question.richtig { border-color: var(--green); }
    .mtest-question.falsch  { border-color: var(--red); }

    .mtest-q-nr {
      font-size: var(--fs-xs, .72rem); color: var(--txt3);
      font-family: var(--font-mono); text-transform: uppercase;
      margin-bottom: 6px;
    }
    .mtest-q-text { font-size: var(--fs-lg, 1rem); font-weight: 600; margin-bottom: 12px; line-height: 1.5; }

    .mtest-mc-opt {
      display: flex; align-items: flex-start; gap: 10px;
      padding: 9px 13px; margin-bottom: 6px;
      border: 1px solid var(--border); border-radius: 6px;
      cursor: pointer; font-size: var(--fs-base, .9rem); transition: all .15s; line-height: 1.4;
    }
    .mtest-mc-opt:hover  { border-color: var(--cyan);  background: rgba(99,189,166,.1); }
    .mtest-mc-opt.selected { border-color: var(--cyan);  background: rgba(99,189,166,.15); }
    .mtest-mc-opt.correct  { border-color: var(--green); background: rgba(108,191,110,.12); pointer-events: none; }
    .mtest-mc-opt.wrong    { border-color: var(--red);      background: rgba(217,122,114,.1);  pointer-events: none; }

    .mtest-textarea {
      width: 100%; min-height: 80px; resize: vertical;
      background: var(--bg3); border: 1px solid var(--border);
      border-radius: 6px; color: var(--txt);
      padding: 8px 12px; font-family: var(--font-sans); font-size: var(--fs-base, .9rem);
      box-sizing: border-box; line-height: 1.5;
    }
    .mtest-textarea:focus { outline: none; border-color: var(--cyan); }

    .mtest-erklaerung {
      margin-top: 8px; padding: 9px 12px;
      background: var(--bg3); border-radius: 6px;
      font-size: var(--fs-sm, .8rem); color: var(--txt2);
      border-left: 3px solid var(--cyan);
      line-height: 1.5;
    }

    .mtest-result-banner {
      padding: 18px 20px; border-radius: 8px; margin-bottom: 20px;
      font-size: var(--fs-lg, 1rem); font-weight: 600; line-height: 1.5;
    }
    .mtest-result-banner.passed {
      background: rgba(108,191,110,.12);
      border: 1px solid var(--green); color: var(--green);
    }
    .mtest-result-banner.failed {
      background: rgba(214,162,63,.1);
      border: 1px solid var(--yellow); color: var(--yellow);
    }


    /* ============================================================
       LERNBEGLEITER
    ============================================================ */
    .lb-overlay {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 850;
      background: var(--bg);
      flex-direction: column;
      overflow: hidden;
    }
    .lb-overlay.open { display: flex; }

    /* Split-Layout: Chat links, PDF-Panel rechts */
    .lb-main {
      flex: 1;
      display: flex;
      min-height: 0;
      overflow: hidden;
      position: relative;
    }
    .lb-chat-col {
      flex: 1 1 0;
      min-width: 0;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      transition: flex-basis .25s ease, opacity .2s;
    }
    .lb-docs-panel {
      flex: 0 0 0;
      width: 0;
      overflow: hidden;
      background: var(--bg2);
      border-left: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      transition: flex-basis .3s ease, width .3s ease;
    }
    .lb-overlay.docs-open .lb-docs-panel {
      flex: 0 0 46%;
      width: 46%;
    }
    .lb-docs-header {
      flex-shrink: 0;
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
      display: flex;
      gap: 8px;
      align-items: center;
      font-size: var(--fs-sm, .8rem);
      color: var(--txt2);
    }
    .lb-docs-select {
      flex: 1;
      min-width: 0;
      padding: 6px 10px;
      border-radius: 6px;
      background: var(--bg3);
      color: var(--txt);
      border: 1px solid var(--border);
      font-size: var(--fs-sm, .8rem);
      font-family: inherit;
    }
    .lb-docs-body {
      flex: 1;
      min-height: 0;
      overflow: auto;
      background: var(--bg);
      display: flex;
      align-items: flex-start;
      justify-content: center;
      padding: 12px;
    }
    .lb-docs-body iframe {
      width: 100%;
      height: 100%;
      border: 0;
      background: #fff;
    }
    .lb-docs-empty {
      color: var(--txt3);
      font-size: var(--fs-sm, .8rem);
      padding: 40px 20px;
      text-align: center;
    }
    /* Tablet / small desktop: PDF uebernimmt Vollflaeche (Wechsel) */
    @media (max-width: 900px) {
      .lb-overlay.docs-open .lb-chat-col { display: none; }
      .lb-overlay.docs-open .lb-docs-panel { flex: 1 1 100%; width: 100%; }
    }

    /* === Sketch-Panel === */
    .lb-sketch-panel {
      flex: 0 0 0;
      width: 0;
      overflow: hidden;
      background: var(--bg2);
      border-left: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      transition: flex-basis .3s ease, width .3s ease;
    }
    .lb-overlay.sketch-open .lb-sketch-panel {
      flex: 0 0 50%;
      width: 50%;
    }
    /* Tablet/Phone: Sketch uebernimmt Vollflaeche im Wechsel mit Chat */
    @media (max-width: 900px) {
      .lb-overlay.sketch-open .lb-chat-col { display: none; }
      .lb-overlay.sketch-open .lb-sketch-panel { flex: 1 1 100%; width: 100%; }
    }
    body[data-device="tablet"] .lb-overlay.sketch-open .lb-chat-col { display: none; }
    body[data-device="tablet"] .lb-overlay.sketch-open .lb-sketch-panel { flex: 1 1 100%; width: 100%; }
    body[data-device="phone"]  .lb-overlay.sketch-open .lb-chat-col { display: none; }
    body[data-device="phone"]  .lb-overlay.sketch-open .lb-sketch-panel { flex: 1 1 100%; width: 100%; }

    .lb-sketch-header {
      flex-shrink: 0;
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .lb-sketch-toolbar {
      flex-shrink: 0;
      padding: 6px 10px;
      border-bottom: 1px solid var(--border);
      display: flex;
      gap: 4px;
      align-items: center;
      background: var(--bg3);
    }
    .lb-sketch-toolbar button {
      background: transparent;
      border: 1px solid transparent;
      color: var(--txt2);
      padding: 6px 9px;
      border-radius: 6px;
      cursor: pointer;
      font-size: var(--fs-base, .9rem);
      line-height: 1;
      min-width: 32px;
      display: flex; align-items: center; justify-content: center;
    }
    .lb-sketch-toolbar button:hover { color: var(--txt); background: var(--bg2); }
    .lb-sketch-toolbar button.active {
      background: var(--cyan);
      color: var(--bg);
      border-color: var(--cyan);
    }
    .lb-sketch-toolbar .sep {
      width: 1px;
      height: 20px;
      background: var(--border);
      margin: 0 2px;
    }
    .lb-sketch-toolbar input[type="color"] {
      width: 28px; height: 28px;
      border: 1px solid var(--border);
      border-radius: 6px;
      background: transparent;
      cursor: pointer;
      padding: 0;
    }
    .lb-sketch-body {
      flex: 1;
      min-height: 0;
      overflow: auto;
      background: #f5f5f0;          /* leichtes Notizblock-Beige */
      padding: 12px;
      display: flex;
      align-items: flex-start;
      justify-content: center;
    }
    .lb-sketch-canvas-wrap {
      position: relative;
      isolation: isolate;
      background: #fff;
      box-shadow: 0 2px 12px rgba(0,0,0,.18);
      border-radius: 4px;
      width: 100%;
      max-width: 1200px;
      /* Aspect-Ratio fuer A4-aehnliches Skizzenblatt */
      aspect-ratio: 1240 / 1755;
    }
    .lb-sketch-canvas-wrap canvas {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
    }
    .lb-sketch-canvas-wrap canvas.pdf-hl-canvas { mix-blend-mode: multiply; z-index: 1; pointer-events: none; }
    .lb-sketch-canvas-wrap canvas.pdf-ink-canvas {
      pointer-events: none;
      z-index: 2;
      touch-action: auto;
    }
    body.anno-active:not(.anno-hand) .lb-sketch-canvas-wrap canvas.pdf-ink-canvas {
      pointer-events: auto;
      touch-action: none;
      cursor: crosshair;
    }
    /* Toggle-Button im Header */
    .lb-docs-toggle {
      background: var(--bg3);
      color: var(--txt2);
      border: 1px solid var(--border);
      padding: 5px 12px;
      border-radius: 6px;
      font-size: var(--fs-xs, .72rem);
      cursor: pointer;
      flex-shrink: 0;
      font-family: inherit;
    }
    .lb-docs-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

    /* Saubere Werkzeugleiste (Reiter) im Kobold-Header */
    .lb-toolbar { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
    .lb-tool {
      background: var(--bg3);
      color: var(--txt2);
      border: 1px solid var(--border);
      padding: 6px 13px;
      border-radius: 8px;
      font-size: var(--fs-xs, .72rem);
      font-weight: 600;
      cursor: pointer;
      flex-shrink: 0;
      font-family: inherit;
      white-space: nowrap;
      transition: color .15s, border-color .15s, background .15s;
    }
    .lb-tool:hover { color: var(--cyan); border-color: var(--cyan); }
    .lb-tool-close { margin-left: 8px; font-weight: 700; }
    .lb-tool-close:hover { color: var(--red); border-color: var(--red); }
    .lb-overlay.docs-open #lbDocsBtn {
      background: rgba(106,168,255,0.15); color: var(--cyan); border-color: var(--cyan);
    }

    #lbMikBtn.aktiv {
      color: var(--red);
      border-color: var(--red);
      animation: lb-puls 1s ease-in-out infinite;
    }
    #lbMikBtn.laden {
      color: var(--yellow);
      border-color: var(--yellow);
    }
    #lbSprecherBtn.aktiv {
      color: var(--cyan);
      border-color: var(--cyan);
    }
    #lbRealtimeBtn.aktiv {
      color: var(--red);
      border-color: var(--red);
      animation: lb-puls 1s ease-in-out infinite;
    }
    #lbRealtimeBtn.verbinden {
      color: var(--yellow);
      border-color: var(--yellow);
    }
    @keyframes lb-puls {
      0%, 100% { opacity: 1; }
      50%       { opacity: .45; }
    }
    .lb-overlay.docs-open .lb-docs-toggle {
      background: rgba(106,168,255,0.15);
      color: var(--cyan);
      border-color: var(--cyan);
    }

    .lb-header {
      height: 52px;
      flex-shrink: 0;
      background: var(--bg2);
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      padding: 0 18px;
      gap: 12px;
    }
    .lb-fach-badge {
      font-family: var(--font-mono);
      font-size: var(--fs-xs, .72rem);
      font-weight: 700;
      color: var(--bg);
      background: var(--cyan);
      border-radius: 5px;
      padding: 3px 8px;
      flex-shrink: 0;
    }
    .lb-modul-name {
      font-family: var(--font-head);
      font-size: var(--fs-lg, 1rem);
      font-weight: 700;
      color: var(--txt);
      flex: 1;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .lb-pdf-status {
      font-size: var(--fs-xs, .72rem);
      padding: 3px 10px;
      border-radius: 99px;
      font-weight: 700;
      flex-shrink: 0;
      font-family: var(--font-mono);
    }
    .lb-pdf-status.loaded {
      background: rgba(108,191,110,0.12);
      color: var(--green);
      border: 1px solid rgba(108,191,110,0.3);
    }
    .lb-pdf-status.empty {
      background: rgba(214,162,63,0.12);
      color: var(--yellow);
      border: 1px solid rgba(214,162,63,0.3);
    }

    /* Chat-Bereich */
    .lb-chat {
      flex: 1;
      overflow-y: auto;
      padding: 24px 20px;
      display: flex;
      flex-direction: column;
      gap: 0;
    }
    .lb-chat-inner {
      max-width: 1200px;
      width: 100%;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    /* github-markdown-css setzt max-width: 1012px — bei uns Bubble soll voll breit werden */
    .lb-msg.ai.markdown-body { max-width: none; }

    /* Nachrichten */
    .lb-msg {
      padding: 26px 30px;
      border-radius: 16px;
      line-height: 1.78;
      font-size: var(--fs-lg, 1rem);
      animation: slideIn 0.25s ease-out;
    }
    .lb-msg.ai {
      background:
        radial-gradient(1200px 300px at 0% 0%, rgba(99,189,166,0.06), transparent 60%),
        linear-gradient(180deg, rgba(99,189,166,0.025), transparent 30%),
        var(--bg2);
      border: 1px solid var(--border);
      border-left: 4px solid var(--cyan);
      box-shadow: 0 4px 24px rgba(0,0,0,0.22), 0 1px 0 rgba(255,255,255,0.02) inset;
    }
    .lb-msg.user {
      background: rgba(108,191,110,0.08);
      border: 1px solid rgba(108,191,110,0.22);
      border-right: 4px solid var(--green);
      align-self: flex-end;
      max-width: 80%;
      color: var(--txt);
    }
    .lb-msg.loading {
      background: var(--bg2);
      border: 1px solid var(--border);
      border-left: 4px solid var(--cyan);
      color: var(--txt3);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* ── Markdown-Rendering AI-Nachrichten: github-markdown-css
       Die Klasse .markdown-body wird im JS nach marked.parse() gesetzt.
       Wir ueberschreiben nur was noetig ist, damit es in unsere Bubble passt. */
    .lb-msg.ai.markdown-body {
      background:
        radial-gradient(1200px 300px at 0% 0%, rgba(99,189,166,0.06), transparent 60%),
        var(--bg2);
      color: var(--txt);
      padding: 22px 26px;
      font-size: var(--fs-lg, 1rem);
      line-height: 1.7;
      border-radius: 14px;
      border: 1px solid var(--border);
      border-left: 4px solid var(--cyan);
    }
    /* github-markdown-css nutzt eigene Variablen — paar davon ins Theme haengen */
    .lb-msg.ai.markdown-body {
      --color-fg-default: var(--txt);
      --color-fg-muted: var(--txt2);
      --color-fg-subtle: var(--txt2);
      --color-canvas-default: transparent;
      --color-canvas-subtle: var(--bg3);
      --color-border-default: var(--border);
      --color-border-muted: var(--border);
      --color-neutral-muted: rgba(99,189,166,0.12);
      --color-accent-fg: var(--cyan);
      --color-accent-emphasis: var(--cyan);
      --color-danger-fg: var(--red);
      --color-attention-fg: var(--yellow);
    }
    .lb-msg.ai.markdown-body a { color: var(--cyan); }
    .lb-msg.ai.markdown-body code {
      background: rgba(99,189,166,0.12);
      color: var(--yellow);
      padding: 2px 6px;
      border-radius: 6px;
    }
    .lb-msg.ai.markdown-body pre {
      background: var(--bg);
      border: 1px solid var(--border);
    }
    .lb-msg.ai.markdown-body pre code {
      background: transparent;
      color: var(--txt);
      padding: 0;
    }
    .lb-msg.ai.markdown-body blockquote {
      border-left: 3px solid var(--cyan);
      color: var(--txt2);
      background: rgba(99,189,166,0.05);
      border-radius: 6px;
      padding: 10px 14px;
    }
    .lb-msg.ai.markdown-body table {
      background: var(--bg);
    }
    .lb-msg.ai.markdown-body th {
      background: rgba(99,189,166,0.10);
      color: var(--cyan);
    }
    .lb-msg.ai.markdown-body tr:nth-child(2n) {
      background: rgba(255,255,255,0.02);
    }
    .lb-msg.ai.markdown-body hr { background: var(--border); }
    .lb-msg.ai.markdown-body > *:first-child { margin-top: 0 !important; }
    .lb-msg.ai.markdown-body > *:last-child  { margin-bottom: 0 !important; }

    /* A/B/C-Choice-Paragrafen (optionales Enhancement, per JS getaggt) */
    .lb-msg.ai.markdown-body p.lb-choice {
      background: var(--bg3);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 10px 14px;
      margin: 8px 0;
    }
    .lb-msg.ai.markdown-body p.lb-choice > strong:first-child {
      color: var(--cyan);
      margin-right: 8px;
    }

    /* KI-Modell-Badge (unter AI-Nachrichten) */
    .lb-ki-badge {
      font-size: .6rem;
      color: var(--txt3, #7a7468);
      margin: 2px 0 6px 14px;
      opacity: .7;
      letter-spacing: .03em;
      user-select: none;
    }

    /* Chips */
    .lb-chips {
      flex-shrink: 0;
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      padding: 10px 20px;
      border-top: 1px solid var(--border);
      background: var(--bg2);
    }
    .lb-chip {
      padding: 5px 12px;
      border: 1px solid var(--border);
      border-radius: 99px;
      background: transparent;
      color: var(--txt2);
      font-size: var(--fs-sm, .8rem);
      font-family: var(--font-body);
      cursor: pointer;
      transition: all 0.15s;
      white-space: nowrap;
    }
    .lb-chip:hover {
      border-color: var(--cyan);
      color: var(--cyan);
      background: rgba(99,189,166,0.08);
    }

    /* Footer / Input */
    .lb-footer {
      flex-shrink: 0;
      display: flex;
      gap: 10px;
      padding: 12px 20px;
      background: var(--bg2);
      border-top: 1px solid var(--border);
      align-items: flex-end;
    }
    .lb-textarea {
      flex: 1;
      background: var(--bg3);
      border: 1px solid var(--border);
      border-radius: 8px;
      color: var(--txt);
      padding: 10px 12px;
      font-family: var(--font-body);
      font-size: var(--fs-base, .9rem);
      resize: none;
      outline: none;
      line-height: 1.5;
      min-height: 42px;
      max-height: 120px;
      transition: border-color 0.15s;
    }
    .lb-textarea:focus { border-color: var(--cyan); }
    .lb-textarea::placeholder { color: var(--txt3); }

    /* Modul-Karte: Aktions-Buttons */
    .module-actions {
      display: flex;
      gap: 6px;
      margin-top: 10px;
    }
    .module-actions .btn {
      flex: 1;
      text-align: center;
      font-size: var(--fs-xs, .72rem);
      padding: 6px 8px;
    }

    /* User-Area (admin button / logout) */
    .user-area {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: 8px;
    }
    .user-name {
      font-size: var(--fs-sm, .8rem);
      color: var(--txt3);
      font-family: var(--font-mono);
    }
    .btn-admin {
      padding: 4px 10px;
      font-size: var(--fs-xs, .72rem);
      font-weight: 700;
      background: rgba(99,189,166,0.12);
      border: 1px solid var(--cyan);
      border-radius: 6px;
      color: var(--cyan);
      text-decoration: none;
      transition: all 0.15s;
    }
    .btn-admin:hover { background: rgba(99,189,166,0.25); }
    .btn-logout {
      padding: 4px 10px;
      font-size: var(--fs-xs, .72rem);
      font-weight: 700;
      background: rgba(255,106,106,0.1);
      border: 1px solid rgba(255,106,106,0.4);
      border-radius: 6px;
      color: var(--red);
      text-decoration: none;
      transition: all 0.15s;
    }
    .btn-logout:hover { background: rgba(255,106,106,0.2); }

    @media (max-width: 768px) {
      .main {
        padding: 16px;
      }

      .home-grid {
        grid-template-columns: 1fr;
      }

      .files-grid {
        grid-template-columns: 1fr;
      }

      .modules-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
      }

      .message-bubble {
        max-width: 85%;
      }

      .pdf-panel {
        width: 100vw;
      }

      .fach-detail-actions {
        flex-direction: column;
      }

      .fach-detail-actions .btn {
        width: 100%;
      }
    }

    /* ── KOBOLD-LESEFLAECHE-V1 ───────────────────────────────────────────
       Die Kobold-Antworten sind die Leseflaeche: helle Lesekarte, schwarze
       Schrift (wie Lehrbrief/Hilfe). Der Chat-Rahmen drumherum bleibt dunkel,
       Eingabefelder/User-Bubble bleiben unveraendert. */
    .lb-msg.ai,
    .lb-msg.ai.markdown-body {
      background: #f6f2e9 !important;
      color: #141414;
      border: 1px solid #cbbf9e;
      border-left: 4px solid var(--cyan);
      box-shadow: 0 4px 24px rgba(0,0,0,0.32);
      --color-fg-default: #141414;
      --color-fg-muted: #5a5040;
      --color-fg-subtle: #6f6552;
      --color-canvas-default: transparent;
      --color-canvas-subtle: #ece6d6;
      --color-border-default: #d4c9ab;
      --color-border-muted: #ddd3bb;
      --color-neutral-muted: rgba(0,0,0,0.06);
      --color-accent-fg: #1d6fb8;
    }
    .lb-msg.ai.markdown-body a    { color: #1d6fb8; }
    .lb-msg.ai.markdown-body code { background: rgba(0,0,0,0.06); color: #8a5a12; }
    .lb-msg.ai.markdown-body pre  { background: #ece6d6; border: 1px solid #d9cbab; }
    .lb-msg.ai.markdown-body pre code { color: #141414; }
    .lb-msg.ai.markdown-body blockquote {
      border-left: 3px solid var(--cyan); color: #3a3630;
      background: rgba(47,109,93,0.08);
    }
    .lb-msg.ai.markdown-body table { background: #fdfbf5; }
    .lb-msg.ai.markdown-body th    { background: #e6dcc4; color: #2f6d5d; }
    .lb-msg.ai.markdown-body tr:nth-child(2n) { background: rgba(0,0,0,0.035); }
    .lb-msg.ai.markdown-body hr    { background: #d9cbab; }
    .lb-msg.ai.markdown-body p.lb-choice {
      background: #ece6d6; color: #141414; border-color: #d4c9ab;
    }
    /* Quiz-Buttons (Single-Choice A/B/C/D) hell, passend zur Lesekarte */
    .lb-msg.ai .lb-quiz-btn,
    .lb-msg.ai .kobold-quiz-btn {
      background: #ece6d6;
      border-color: #cbbf9e;
      color: #141414;
    }
    .lb-msg.ai .lb-quiz-btn:hover,
    .lb-msg.ai .kobold-quiz-btn:hover {
      border-color: #2f6d5d;
      background: #e3dcc6;
    }
    .lb-msg.ai .lb-quiz-letter,
    .lb-msg.ai .kobold-quiz-letter {
      background: #2f6d5d;
      color: #fff;
    }
    .lb-msg.ai .lb-quiz-btn.lb-quiz-chosen,
    .lb-msg.ai .kobold-quiz-btn.kobold-quiz-chosen {
      border-color: #3a7d3e;
      background: rgba(58,125,62,.14);
    }
    .lb-msg.ai .lb-quiz-btn.lb-quiz-chosen .lb-quiz-letter,
    .lb-msg.ai .kobold-quiz-btn.kobold-quiz-chosen .kobold-quiz-letter {
      background: #3a7d3e;
    }
    /* Lesetext knackiger: groesser, reines Schwarz, engeres Spacing
       (vorher wirkte Atkinson 400 mit weitem Spacing duenn/blass) */
    .lb-msg.ai.markdown-body,
    .lb-msg.ai.markdown-body p,
    .lb-msg.ai.markdown-body li,
    .lb-msg.ai.markdown-body td {
      color: #000;
      font-size: 1.25rem;
      line-height: 1.75;
      letter-spacing: 0.01em;
    }
    .lb-msg.ai .lb-quiz-btn { font-size: 1.05rem; letter-spacing: 0.01em; }

    /* ── Aufgeraeumter & luftiger — orientiert an Hilfe/Lehrbrief ──
       Mehr Abstand, klare Gliederung, nicht alles eng aufeinander. */
    .lb-msg.ai.markdown-body {
      padding: 30px 38px;
      line-height: 1.9;
    }
    .lb-msg.ai.markdown-body p { margin: 0 0 16px; }
    .lb-msg.ai.markdown-body p:last-child { margin-bottom: 0; }
    .lb-msg.ai.markdown-body h1 { font-size: 1.55rem; line-height: 1.3; margin: 6px 0 14px; }
    .lb-msg.ai.markdown-body h2 { font-size: 1.3rem;  line-height: 1.3; margin: 30px 0 12px; }
    .lb-msg.ai.markdown-body h3 { font-size: 1.12rem; line-height: 1.35; margin: 24px 0 10px; }
    .lb-msg.ai.markdown-body h2:first-child,
    .lb-msg.ai.markdown-body h1:first-child { margin-top: 0; }
    .lb-msg.ai.markdown-body ul,
    .lb-msg.ai.markdown-body ol { margin: 12px 0 16px; padding-left: 28px; }
    .lb-msg.ai.markdown-body li { margin: 8px 0; }
    .lb-msg.ai.markdown-body li > ul,
    .lb-msg.ai.markdown-body li > ol { margin: 8px 0; }
    .lb-msg.ai.markdown-body blockquote { margin: 18px 0; padding: 16px 20px; }
    .lb-msg.ai.markdown-body pre { margin: 16px 0; padding: 14px 16px; }
    .lb-msg.ai.markdown-body table { margin: 16px 0; }
    .lb-msg.ai.markdown-body th,
    .lb-msg.ai.markdown-body td { padding: 9px 12px; }
    .lb-msg.ai.markdown-body hr { margin: 26px 0; height: 1px; border: 0; }
    .lb-msg.ai .lb-quiz-btn { margin: 9px 0; padding: 14px 18px; }
    .lb-msg.ai .lb-quiz-letter { width: 26px; height: 26px; margin-right: 4px; }