/* Selbst gehostet statt Google-Fonts-CDN (kein externer Datenabfluss beim Seitenaufruf) -
     eine einzige Variable-Font-Datei deckt die Schriftschnitte 400-800 ab. */
  @font-face{
    font-family:'Manrope';
    font-style:normal;
    font-weight:400 800;
    font-display:swap;
    src:url('../fonts/manrope/manrope-latin-variable.woff2') format('woff2');
  }

  :root{
    --ink:#0F172A;
    --card:#1B2436;
    --card-line:#2C374B;
    --lime:#B8FF1A;
    --white:#FFFFFF;
    --grey:#F4F7FA;
    --muted:#93A0B4;
  }
  *{box-sizing:border-box;}
  html,body{margin:0; padding:0;}
  body{
    font-family:'Manrope', Arial, sans-serif;
    background:var(--ink);
    color:var(--white);
    min-height:100vh;
  }
  .lernario{
    max-width:900px;
    margin:0 auto;
    padding:2rem 1.5rem 4rem;
    min-height:560px;
  }
  .footer{
    margin-top:32px; padding-top:16px; border-top:1px solid var(--card-line);
    text-align:center; font-size:12px; color:var(--muted);
  }
  .footer a{color:var(--muted); text-decoration:none;}
  .footer a:hover{color:var(--lime);}
  .footer-trenner{margin:0 8px;}
  h1,h2,h3{
    font-family:'Manrope', Arial, sans-serif;
    font-weight:700;
    margin:0;
  }
  a{color:inherit;}

  /* --- Flash-Meldungen --- */
  .flash-list{list-style:none; margin:0 0 18px; padding:0;}
  .flash-list li{
    background:var(--card); border:1px solid var(--lime); color:var(--white);
    padding:10px 14px; border-radius:8px; margin-bottom:8px; font-size:14px; font-weight:500;
  }

  /* --- Vorschau-Banner (Admin sieht Schüler-Seiten) --- */
  .vorschau-banner{
    display:flex; align-items:center; justify-content:center; gap:14px; flex-wrap:wrap;
    background:var(--lime); color:var(--ink); padding:8px 14px; border-radius:8px;
    margin-bottom:18px; font-size:13px; font-weight:600;
  }
  .vorschau-banner a{color:var(--ink); text-decoration:underline;}

  /* --- Formulare (Admin) --- */
  .form-box{background:var(--card); border:1px solid var(--card-line); border-radius:12px; padding:1.25rem 1.5rem; margin-bottom:24px;}
  .form-box label{font-size:13px; font-weight:600; color:var(--muted); display:block; margin:12px 0 4px;}
  .form-box input, .form-box select, .form-box textarea{
    width:100%; padding:9px 10px; border:1px solid var(--card-line); border-radius:7px;
    font-size:14px; font-family:'Manrope',sans-serif; font-weight:500; background:var(--ink); color:var(--white);
  }
  .form-box textarea{min-height:80px; resize:vertical;}
  .form-box input:focus, .form-box select:focus, .form-box textarea:focus{outline:2px solid var(--lime); outline-offset:1px;}

  /* Dropdowns außerhalb der .form-box (z. B. Unterthema-Zuordnung in Tabellen) ans dunkle Schema anpassen */
  .admin-table select, .inline-form select{
    border:1px solid var(--card-line); border-radius:6px; font-family:'Manrope',sans-serif;
    font-weight:500; background:var(--ink); color:var(--white);
  }
  .admin-table select:focus, .inline-form select:focus{outline:2px solid var(--lime); outline-offset:1px;}
  /* Options-Liste in dunklen Selects ebenfalls dunkel (sonst je nach Browser wieder weiß) */
  .form-box select option, .admin-table select option, .inline-form select option{
    background:var(--card); color:var(--white);
  }

  /* --- Tabellen (Admin) --- */
  /* border-bottom sitzt bewusst auf <tr>, nicht auf jeder einzelnen <th>/<td> - eine einzige
     durchgehende Linie pro Zeile statt N einzelner Zellrahmen, die bei Rundungseffekten
     (Sub-Pixel-Rendering, Skalierung) minimal gegeneinander versetzt wirken können. */
  table.admin-table{width:100%; border-collapse:collapse; margin-bottom:24px; font-size:14px;}
  table.admin-table tr{border-bottom:1px solid var(--card-line);}
  table.admin-table th{text-align:left; color:var(--muted); font-weight:600; padding:8px 10px;}
  table.admin-table td{padding:8px 10px; font-weight:500;}
  table.admin-table tr:hover td{background:rgba(255,255,255,0.02);}
  /* Aktionszellen enthalten oft mehrere Buttons - hier kompakter, damit sie in eine
     Zeile passen (bricht bei sehr schmalen Fenstern trotzdem sauber um). */
  table.admin-table td.row{gap:6px;}
  table.admin-table td .btn-ghost,
  table.admin-table td .btn-danger,
  table.admin-table td .btn-secondary{padding:6px 10px; font-size:12px;}

  /* Aktionen-Dropdown (aktuell nur in der Admin-Tabelle) */
  .aktionen-menu{position:relative; display:inline-block; text-align:left;}
  .aktionen-dropdown{
    display:none; position:absolute; right:0; top:calc(100% + 4px); z-index:20;
    min-width:210px; padding:6px; background:var(--card); border:1px solid var(--card-line);
    border-radius:9px; box-shadow:0 10px 26px rgba(0,0,0,0.4);
  }
  .aktionen-menu.open .aktionen-dropdown{display:block;}
  .aktionen-dropdown form{margin:0;}
  .aktionen-item{
    display:block; width:100%; text-align:left; background:none; border:none; cursor:pointer;
    color:var(--white); font-family:'Manrope',sans-serif; font-weight:600; font-size:13px;
    padding:8px 10px; border-radius:6px; text-decoration:none; white-space:nowrap;
  }
  .aktionen-item:hover{background:rgba(255,255,255,0.06); color:var(--lime);}
  .aktionen-item.danger{color:#F3877E;}
  .aktionen-item.danger:hover{background:rgba(243,135,126,0.1); color:#F3877E;}

  .admin-nav{display:flex; gap:6px; flex-wrap:wrap; margin-bottom:24px;}
  .admin-nav a{
    font-size:13px; font-weight:600; padding:7px 13px; border-radius:7px; text-decoration:none;
    border:1px solid var(--card-line); color:var(--muted);
  }
  .admin-nav a:hover, .admin-nav a.active{border-color:var(--lime); color:var(--lime);}

  /* Vorschau-Dropdown rechtsbündig in der Admin-Navigation */
  .admin-nav .vorschau-menu{margin-left:auto; position:relative;}
  .admin-nav .vorschau-menu summary{
    list-style:none; cursor:pointer; font-size:13px; font-weight:600; padding:7px 13px;
    border-radius:7px; border:1px solid var(--card-line); color:var(--muted);
  }
  .admin-nav .vorschau-menu summary::-webkit-details-marker{display:none;}
  .admin-nav .vorschau-menu[open] summary,
  .admin-nav .vorschau-menu summary:hover{border-color:var(--lime); color:var(--lime);}
  .admin-nav .vorschau-menu:not([open]) .vorschau-menu-panel{display:none;}
  .admin-nav .vorschau-menu-panel{
    position:absolute; right:0; top:calc(100% + 4px); z-index:30; min-width:190px; max-height:60vh;
    overflow-y:auto; background:var(--card); border:1px solid var(--card-line); border-radius:9px;
    padding:6px; display:flex; flex-direction:column; gap:2px; box-shadow:0 8px 24px rgba(0,0,0,0.35);
  }
  .admin-nav .vorschau-menu-panel a{
    border:none; color:var(--white); padding:8px 10px; border-radius:6px; font-weight:500;
  }
  .admin-nav .vorschau-menu-panel a:hover{background:var(--ink); color:var(--lime);}

  .breadcrumb{font-size:13px; color:var(--muted); margin-bottom:16px;}
  .breadcrumb a{color:var(--muted); text-decoration:none;}
  .breadcrumb a:hover{color:var(--lime);}

  .badge{display:inline-block; font-size:11px; font-weight:700; padding:2px 8px; border-radius:20px;}
  .badge.leicht{background:rgba(184,255,26,0.15); color:var(--lime);}
  .badge.mittel{background:rgba(147,160,180,0.2); color:var(--muted);}
  .badge.schwer{background:rgba(243,135,126,0.15); color:#F3877E;}
  .badge.offen{background:rgba(243,135,126,0.15); color:#F3877E;}
  .badge.beantwortet{background:rgba(184,255,26,0.15); color:var(--lime);}
  .wordmark{font-family:'Manrope', Arial, sans-serif; font-weight:800; font-size:22px; display:flex; align-items:center; gap:8px; color:var(--white);}
  .wordmark .de{color:var(--lime);}
  .logo-icon{width:26px; height:26px; flex-shrink:0;}
  .wordmark-svg{height:22px; width:auto; display:block;}
  .signet-svg{height:72px; width:auto; display:block;}

  /* --- Login --- */
  .login-wrap{display:flex; justify-content:center; padding:2.5rem 0 2rem;}
  .login-top{display:flex; flex-direction:column; align-items:center; gap:6px;}
  .login-slogan{font-family:'Manrope',sans-serif; font-weight:500; font-size:13px; color:var(--muted);}
  .login-slogan .accent{color:var(--lime);}
  .login-card{
    background:var(--card);
    border:1px solid var(--card-line);
    border-radius:14px;
    padding:2rem 2.25rem;
    width:340px;
  }
  .login-card label{font-family:'Manrope',sans-serif; font-weight:500; font-size:13px; color:var(--muted); display:block; margin:14px 0 4px;}
  .login-card input{
    width:100%; padding:9px 10px; border:1px solid var(--card-line);
    border-radius:7px; font-size:14px; font-family:'Manrope',sans-serif; font-weight:500; background:var(--ink);
    color:var(--white);
  }
  .login-card input:focus{outline:2px solid var(--lime); outline-offset:1px;}
  .login-btn{
    margin-top:20px; width:100%; padding:10px; border:none; border-radius:7px;
    background:var(--lime); color:var(--ink); font-weight:700; font-size:14px;
    font-family:'Manrope',sans-serif; cursor:pointer;
  }
  .login-btn:hover{filter:brightness(1.05);}
  .login-hint{font-family:'Manrope',sans-serif; font-weight:400; font-size:12px; color:var(--muted); margin-top:14px; line-height:1.5;}
  .login-error{color:#F3877E; font-size:13px; margin-top:10px; display:none; font-family:'Manrope',sans-serif;}

  /* --- App shell --- */
  .app{display:none;}
  .topbar{display:flex; justify-content:space-between; align-items:center; border-bottom:1px solid var(--card-line); padding-bottom:14px; margin-bottom:22px;}
  .topbar .who{font-family:'Manrope',sans-serif; font-weight:500; font-size:13px; color:var(--muted);}
  .logout{background:none; border:1px solid var(--card-line); border-radius:7px; padding:6px 12px; font-size:13px; font-family:'Manrope',sans-serif; font-weight:600; color:var(--white); cursor:pointer;}
  .logout:hover{border-color:var(--lime); color:var(--lime);}

  /* --- Kachel-Raster --- */
  .kachel-titel{text-align:center; font-size:19px; font-weight:700; margin:6px 0 22px;}
  .kachel-reihe{display:flex; gap:18px; flex-wrap:wrap; justify-content:center;}
  .kachel{
    width:130px; border:none; cursor:pointer; background:none; padding:0;
    display:flex; flex-direction:column; align-items:center; gap:10px;
    font-family:'Manrope',sans-serif;
  }
  .kachel-box{
    width:100px; height:100px; border-radius:22px; display:flex; align-items:center; justify-content:center;
  }
  .kachel.fach .kachel-box{background:var(--lime);}
  .kachel.thema .kachel-box{background:var(--card); border:2px solid var(--lime);}
  .kachel.thema.active .kachel-box{background:#232F45;}
  .kachel span{font-size:15px; font-weight:600; color:var(--white); text-align:center;}
  .kachel:hover .kachel-box{filter:brightness(1.1);}

  /* Fertige PNG-Kacheln bringen Rand/Hintergrund schon mit - keine zusätzliche Box-Farbe */
  .kachel-box.kachel-img,
  .kachel.fach .kachel-box.kachel-img,
  .kachel.thema .kachel-box.kachel-img{background:none; border:none;}
  .kachel-box.kachel-img img{width:100%; height:100%; object-fit:contain; display:block;}

  .zurueck-zeile{margin-bottom:18px;}

  .content h2{font-size:19px; font-weight:700; margin-bottom:16px;}

  .aufgabe-card{
    background:var(--card); border:1px solid var(--card-line); border-radius:12px;
    padding:16px 18px; margin-bottom:14px;
  }
  .aufgabe-card h3{font-size:16px; margin-bottom:4px; font-weight:700;}
  .aufgabe-card p{font-size:14px; font-weight:500; line-height:1.55; margin:8px 0 12px; color:var(--white);}

  .row{display:flex; gap:10px; flex-wrap:wrap; align-items:center;}
  .btn-secondary{
    background:var(--lime); border:none; color:var(--ink); font-weight:700;
    padding:8px 14px; border-radius:7px; font-size:13px; cursor:pointer; font-family:'Manrope',sans-serif;
  }
  .btn-secondary:hover{filter:brightness(1.05);}
  .btn-secondary.active{background:var(--card); color:var(--white); border:1px solid var(--lime);}
  .btn-secondary.active:hover{filter:brightness(1.15);}
  .btn-ghost{
    background:none; border:1px solid var(--card-line); color:var(--muted); font-weight:600;
    padding:8px 14px; border-radius:7px; font-size:13px; cursor:pointer; font-family:'Manrope',sans-serif;
  }
  .btn-ghost:hover{border-color:var(--lime); color:var(--lime);}
  .btn-danger{
    background:none; border:1px solid var(--card-line); color:#F3877E; font-weight:600;
    padding:6px 12px; border-radius:7px; font-size:12px; cursor:pointer; font-family:'Manrope',sans-serif;
  }
  .btn-danger:hover{border-color:#F3877E; background:rgba(243,135,126,0.1);}
  .inline-form{display:inline;}

  .loesung{
    display:none; margin-top:12px; padding:14px; background:var(--ink);
    border:1px dashed var(--card-line); border-radius:8px; position:relative; color:var(--white); font-weight:500;
  }
  .loesung.show{display:block;}

  /* Generischer Auf-/Zuklapp-Container (gleiche Show/Hide-Mechanik wie .loesung), aber ohne
     deren Lösungsweg-spezifische Stempel-Optik - fuer z.B. "Neues Fach anlegen". */
  .aufklapp-box{display:none; margin-top:12px;}
  .aufklapp-box.show{display:block;}
  .stempel{
    position:absolute; top:-14px; right:14px;
    border:2px solid var(--lime); color:var(--lime);
    font-family:'Manrope',sans-serif; font-weight:700; font-size:12px;
    padding:3px 10px; border-radius:20px; background:var(--ink);
    transform:rotate(-4deg); letter-spacing:0.03em;
  }
  .frage-box{margin-top:12px;}
  .frage-box textarea{
    width:100%; border:1px solid var(--card-line); border-radius:7px; padding:8px 10px;
    font-family:'Manrope',sans-serif; font-weight:500; font-size:13px; resize:vertical; min-height:44px; background:var(--ink);
    color:var(--white);
  }
  .frage-sent{font-size:12px; font-weight:600; color:var(--lime); margin-top:6px; display:none;}
  .empty{color:var(--muted); font-size:14px; padding:20px 0; text-align:center;}

  /* --- Fach-Info (News & Links) --- */
  .info-card{
    background:var(--card); border:1px solid var(--card-line); border-radius:12px;
    padding:18px 20px; margin-top:28px;
  }
  .info-card h3{font-size:14px; font-weight:700; color:var(--lime); margin-bottom:10px; text-transform:uppercase; letter-spacing:0.03em;}
  /* overflow-wrap:anywhere, da Quill Leerzeichen beim Speichern als &nbsp; exportiert -
     ohne erzwungenen Umbruch würde ein langer Satz ohne "echten" Umbruchpunkt (Bindestrich
     o.Ä.) über den Kartenrand hinauslaufen statt umzubrechen. */
  .info-card-body{font-size:14px; font-weight:500; line-height:1.6; color:var(--white); overflow-wrap:anywhere; word-break:break-word;}
  .info-card-body p{margin:0 0 10px;}
  .info-card-body ul{margin:0 0 10px; padding-left:20px;}
  .info-card-body a{color:var(--lime); text-decoration:underline;}

  /* --- Admin: Rich-Text-Editor (News & Links, Quill) --- */
  .quill-wrap{border-radius:7px; overflow:hidden;}
  .quill-wrap .ql-toolbar.ql-snow{
    background:var(--ink); border:1px solid var(--card-line); border-bottom:none;
    border-radius:7px 7px 0 0; font-family:'Manrope',sans-serif;
  }
  .quill-wrap .ql-container.ql-snow{
    background:var(--ink); border:1px solid var(--card-line); border-radius:0 0 7px 7px;
    font-family:'Manrope',sans-serif; font-size:14px;
  }
  .quill-wrap .ql-editor{min-height:220px; color:var(--white); line-height:1.6;}
  .quill-wrap .ql-editor.ql-blank::before{color:var(--muted); font-style:normal;}
  .quill-wrap .ql-snow .ql-stroke{stroke:var(--muted);}
  .quill-wrap .ql-snow .ql-fill{fill:var(--muted);}
  .quill-wrap .ql-snow .ql-picker{color:var(--muted);}
  .quill-wrap .ql-toolbar.ql-snow .ql-picker-options{background:var(--card); border-color:var(--card-line);}
  .quill-wrap .ql-toolbar.ql-snow button:hover .ql-stroke,
  .quill-wrap .ql-toolbar.ql-snow button.ql-active .ql-stroke{stroke:var(--lime);}
  .quill-wrap .ql-toolbar.ql-snow button:hover .ql-fill,
  .quill-wrap .ql-toolbar.ql-snow button.ql-active .ql-fill{fill:var(--lime);}
  .quill-wrap .ql-toolbar.ql-snow button:hover,
  .quill-wrap .ql-toolbar.ql-snow button.ql-active,
  .quill-wrap .ql-snow .ql-picker-label:hover{color:var(--lime);}
  .quill-wrap .ql-editor table td{border:1px solid var(--card-line);}

  /* --- Fach-Info: gerenderte Tabellen/Bilder --- */
  .info-card-body table{border-collapse:collapse; margin:0 0 12px; width:100%;}
  .info-card-body table td, .info-card-body table th{border:1px solid var(--card-line); padding:6px 10px;}
  .info-card-body img{max-width:100%; border-radius:8px; margin:8px 0;}
  .info-card-body h1, .info-card-body h2, .info-card-body h3{margin:14px 0 8px; color:var(--white);}
  .info-card-body blockquote{border-left:3px solid var(--lime); margin:0 0 10px; padding-left:12px; color:var(--muted);}
  .info-card-body pre{background:var(--ink); border:1px solid var(--card-line); border-radius:6px; padding:10px; overflow-x:auto;}

  /* --- Brüche (Zähler über Nenner, waagerechter Strich) --- */
  .bruch{display:inline-flex; flex-direction:column; align-items:stretch; justify-content:center; vertical-align:middle; font-size:0.9em; line-height:1.15; margin:0 2px; text-align:center;}
  .bruch .z{padding:0 3px 1px; border-bottom:1.5px solid currentColor;}
  .bruch .n{padding:1px 3px 0;}

  /* --- Wurzel (Wurzelstrich über dem gesamten Radikanden) ---
     Haken (SVG) und Waagerechte (::before) sind beide top:0 relativ zum selben
     .wurzel-Kasten positioniert, damit sie ohne Versatz ineinander übergehen. */
  .wurzel{position:relative; display:inline-block; vertical-align:middle; margin:0 1px; padding:0.14em 2px 0 0.55em;}
  .wurzel .wz-svg{position:absolute; left:0; top:0; width:0.55em; height:1em; display:block; overflow:visible;}
  .wurzel::before{content:""; position:absolute; top:0; left:0.55em; right:0; border-top:1.4px solid currentColor;}

  /* --- Strecken (Strich über den beiden Endpunkten, z.B. AB) --- */
  .strecke{text-decoration:overline; -webkit-text-decoration-line:overline; text-decoration-thickness:1.3px;}

  /* --- Quill: Vorlage-Leiste (Link-Karte, Info-Box, Termin-Liste, Datei-Download) --- */
  .quill-snippet-leiste{display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin-bottom:8px;}
  .quill-snippet-leiste .btn-ghost{padding:6px 11px; font-size:12px;}
  .quill-snippet-label{font-size:12px; color:var(--muted); font-weight:600;}

  /* --- News&Links-Bausteine: Link-Karte, Datei-Download-Karte, Info-Box, Termin-Liste ---
     Werden sowohl im Quill-Editor (.ql-editor) als auch im gerenderten News&Links-Bereich
     (.info-card-body) verwendet - Klassen sind bewusst nicht an einen Kontext gebunden. */
  .lernario-card{
    display:flex; flex-direction:column; gap:2px; background:var(--ink); border:1px solid var(--card-line);
    border-radius:9px; padding:10px 14px; margin:8px 0; text-decoration:none !important; max-width:420px;
    overflow-wrap:anywhere; word-break:break-word;
  }
  .lernario-card:hover{border-color:var(--lime);}
  .lernario-card-titel{font-size:14px; font-weight:700; color:var(--lime);}
  .lernario-card-beschreibung{font-size:12px; color:var(--muted); font-weight:500;}
  .lernario-card-datei{flex-direction:row; align-items:center; gap:10px;}
  .lernario-card-icon{
    flex-shrink:0; background:var(--lime); color:var(--ink); font-size:11px; font-weight:800;
    padding:4px 7px; border-radius:5px; letter-spacing:0.02em;
  }
  .lernario-infobox{
    background:rgba(184,255,26,0.08); border:1px solid var(--lime); border-radius:9px;
    padding:10px 14px; margin:8px 0;
  }
  .lernario-infobox p{margin:0;}
  .lernario-terminliste{margin:8px 0;}
  .lernario-termin-zeile{
    font-size:14px; font-weight:500; padding:6px 0; border-bottom:1px solid var(--card-line);
  }
  .lernario-termin-zeile:last-child{border-bottom:none;}

  /* --- YouTube-Video-Baustein (Zwei-Klick: bis zum Klick des Schuelers wird nichts von YouTube geladen) --- */
  .lernario-video{position:relative; width:100%; max-width:720px; margin:16px 0;}
  .lernario-video-start{
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
    width:100%; aspect-ratio:16/9; border:1px solid var(--card-line); border-radius:12px;
    background:#0b1220; color:var(--white); cursor:pointer; padding:18px; text-align:center; font:inherit;
    transition:border-color .12s, background .12s;
  }
  .lernario-video-start:hover{border-color:var(--lime); background:#0e1526;}
  .lernario-video-play{
    width:60px; height:60px; border-radius:50%; background:var(--lime); flex:none;
    display:flex; align-items:center; justify-content:center;
  }
  .lernario-video-play::before{
    content:""; width:0; height:0; border-style:solid; border-width:12px 0 12px 20px;
    border-color:transparent transparent transparent var(--ink); margin-left:5px;
  }
  .lernario-video-titel{font-size:15px; font-weight:700;}
  .lernario-video-hinweis{font-size:12px; color:var(--muted); max-width:440px; line-height:1.5;}
  .lernario-video-frame{position:relative; width:100%; aspect-ratio:16/9;}
  .lernario-video-frame iframe{position:absolute; inset:0; width:100%; height:100%; border:0; border-radius:12px;}

  /* --- Unterthemen: Admin-Verwaltungskopf --- */
  .unterthema-kopf{
    display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin:26px 0 8px;
    padding:10px 12px; border:2px solid var(--lime); border-radius:10px; background:var(--card);
  }
  .unterthema-badge{
    font-size:10px; font-weight:800; letter-spacing:0.04em; text-transform:uppercase;
    color:var(--ink); background:var(--lime); padding:3px 7px; border-radius:5px;
  }
  .unterthema-name-input{
    font-size:14px; font-weight:600; padding:5px 9px; width:200px; border-radius:6px;
    border:1px solid var(--card-line); font-family:'Manrope',sans-serif;
    background:var(--ink); color:var(--white);
  }
  .unterthema-name-input:focus{outline:2px solid var(--lime); outline-offset:1px;}
  .unterthema-toggle{
    background:transparent; border:1px solid var(--card-line); color:var(--lime); cursor:pointer;
    border-radius:6px; padding:4px 9px; font-size:13px; line-height:1; transition:transform .15s;
  }
  .unterthema-toggle:hover{border-color:var(--lime);}
  .unterthema-kopf.eingeklappt .unterthema-toggle{transform:rotate(-90deg);}
  .unterthema-seiten.zu{display:none;}

  /* --- Unterthemen: Schüler-Akkordeon (dicker Lime-Rand, standardmäßig eingeklappt) --- */
  .unterthema-akkordeon{
    border:2px solid var(--lime); border-radius:12px; margin:12px 0; background:var(--card);
  }
  .unterthema-summary{
    list-style:none; cursor:pointer; display:flex; align-items:center; gap:12px;
    padding:15px 18px; font-weight:700; font-size:16px; color:var(--white);
  }
  .unterthema-summary::-webkit-details-marker{display:none;}
  .unterthema-summary-titel{flex:1;}
  .unterthema-summary-meta{font-size:12px; font-weight:500; color:var(--muted);}
  .unterthema-summary-pfeil{color:var(--lime); transition:transform .15s;}
  .unterthema-akkordeon[open] .unterthema-summary-pfeil{transform:rotate(180deg);}
  .unterthema-summary:hover{background:rgba(184,255,26,0.06);}
  .unterthema-akkordeon[open] .unterthema-summary{border-bottom:1px solid var(--card-line);}
  .unterthema-inhalt{padding:6px 14px 14px;}

  /* --- Suche: Trefferdarstellung --- */
  .such-breadcrumb{font-size:11.5px; color:var(--muted); font-weight:600; margin-bottom:3px;}
  .such-snippet{font-size:13px; color:var(--muted); line-height:1.5; margin:6px 0 0;}
  mark{background:var(--lime); color:var(--ink); border-radius:3px; padding:0 2px;}

  /* --- Sichtbarkeit pro Klasse (Chips) - gemeinsam fuer Themen/Seiten/Aufgaben --- */
  .sicht-detail{display:none;}
  .sicht-detail.show{display:table-row;}
  .sicht-panel{padding:4px 2px 10px;}
  .sicht-panel-titel{font-size:12px; color:var(--muted); margin:2px 0 6px;}
  .chip-reihe{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:6px;}
  .sicht-chip{font-family:inherit; font-size:12px; font-weight:600; border-radius:7px;
    padding:6px 12px; border:1px solid var(--card-line); background:var(--ink); color:var(--muted);}
  button.sicht-chip{cursor:pointer;}
  .sicht-chip.an{background:var(--lime); color:#0F172A; border-color:var(--lime);}
  .sicht-chip.static{opacity:.65; cursor:default;}
  .sicht-toggle{padding:4px 12px; font-size:12px;}
  .sicht-toggle.active{color:var(--white); border-color:var(--lime);}

  @media (max-width:520px){
    .kachel{width:100px;}
    .kachel-box{width:80px; height:80px;}
  }