/* ============================================================
   LIST.CSS — gemeinsames Aussehen aller Übersichtsseiten
   (Startseite, Klassenlisten, Oberstufen-Auswahl).
   Aenderung am Aussehen ALLER dieser Seiten: hier aendern.
   ============================================================ */
:root{--bg:#0f1115;--card:#181b22;--text:#f1f3f7;--muted:#a4adbd;--line:#2a2f3a;--blue:#7aa2ff;--soft:#202a40}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.5}
main{width:min(calc(100% - 32px),980px);margin:auto;padding:64px 0 80px}
header{margin-bottom:32px}
.eyebrow{margin:0 0 7px;color:var(--blue);font-size:.82rem;font-weight:750;letter-spacing:.09em;text-transform:uppercase}
h1{margin:0;font-size:clamp(2rem,5vw,3.2rem);line-height:1.08;letter-spacing:-.04em}
.intro{max-width:680px;margin:14px 0 0;color:var(--muted)}
.back-link{display:inline-block;margin:0 0 18px;color:var(--muted);font-size:.88rem;text-decoration:none}
.back-link:hover{color:var(--text)}

.list{overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:14px}
.row{display:grid;grid-template-columns:minmax(0,1fr) 112px 112px;gap:12px;align-items:center;min-height:68px;padding:12px 16px 12px 20px;border-top:1px solid var(--line)}
.row:first-child{border-top:0}
.topic{font-weight:620}
.action{display:inline-flex;justify-content:center;align-items:center;min-height:40px;padding:8px 12px;border-radius:9px;font-size:.92rem;font-weight:650;text-decoration:none;white-space:nowrap}
.video{color:var(--blue);background:var(--soft)}
.trainer{color:#fff;background:var(--blue)}
.lernpfad{color:var(--text);background:transparent;border:1.5px solid var(--blue)}
.mit-lernpfad .row{grid-template-columns:minmax(0,1fr) 112px 112px 112px}
.chapter{padding:22px 20px 10px;color:var(--blue);font-size:1rem;font-weight:750;letter-spacing:.09em;border-top:1px solid var(--line)}
.chapter:first-child{border-top:0}

/* Optionaler Knopf "Lernweg-Zettel (PDF)" ueber der Themenliste */
.lernweg{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:0 0 16px;color:var(--muted);font-size:.88rem}

/* Kachel-Raster fuer die Auswahl von Klassenstufe/Halbjahr */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px;text-decoration:none;color:var(--text)}
.tile:hover{border-color:var(--blue)}
.tile .tile-title{font-family:inherit;font-weight:750;font-size:1.15rem;margin:0 0 4px}
.tile .tile-sub{color:var(--muted);font-size:.86rem;margin:0}
.tile.disabled{opacity:.45;pointer-events:none}

footer{margin-top:42px;color:var(--muted);font-size:.85rem}
footer p{margin:8px 0 0}
footer button{background:none;border:0;padding:0;color:var(--muted);font:inherit;text-decoration:underline;cursor:pointer}
.action:focus-visible,footer button:focus-visible,.tile:focus-visible,.back-link:focus-visible{outline:2px solid #fff;outline-offset:2px}

@media(max-width:640px){
  main{width:calc(100% - 24px);padding-top:36px}
  .row{grid-template-columns:1fr 1fr;padding:16px;gap:10px}
  .topic{grid-column:1/-1}
  .action{width:100%}
  .empty{display:none}
  .mit-lernpfad .row{grid-template-columns:1fr 1fr 1fr}
  .mit-lernpfad .empty{display:block}
}