:root{
  /* Hörbuch-Kurs: Sky-Theme (wird pro Buch überschrieben). */
  --tc:#0ea5e9; --tc-dark:#0369a1; --dark:#1A1A1A; --dark2:#2C2C2C;
  --gray:#3E3E3E; --gray-light:#F5F3EE; --success:#22c55e; --warn:#f59e0b;
  --bad:#ef4444; --lock:#9ca3af; --text-muted:#6b7280; --border:#e5e7eb; --white:#fff;
  --head-h:60px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Nunito',sans-serif;background:var(--gray-light);color:var(--dark);min-height:100vh;line-height:1.65;}
a{color:inherit;text-decoration:none;}
p{margin-bottom:12px;}
kbd{background:#fff;border:1px solid var(--border);border-bottom-width:2px;border-radius:5px;padding:1px 6px;font-family:inherit;font-size:.8em;color:var(--gray);}

/* ── Header ─────────────────────────────────────────────────────────────── */
header.top{background:var(--dark);color:#fff;padding:0 24px;height:var(--head-h);display:flex;
  align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.3);}
.brand{display:flex;align-items:center;gap:10px;color:#fff;}
.brand img{width:36px;height:36px;border-radius:50%;object-fit:cover;object-position:top;border:2px solid var(--tc);}
.brand span{font-family:'Oswald',sans-serif;font-size:1.02rem;letter-spacing:.5px;}
.brand em{color:var(--tc);font-style:normal;}
.hdr-right{display:flex;align-items:center;gap:10px;font-size:.875rem;}
.pill{background:rgba(14,165,233,.15);border:1px solid var(--tc);color:var(--tc);padding:4px 12px;border-radius:20px;font-weight:700;white-space:nowrap;}
.btn-sm{background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.8);padding:5px 14px;border-radius:20px;cursor:pointer;font-size:.8rem;transition:all .2s;}
.btn-sm:hover{border-color:#fff;color:#fff;}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn-primary{display:inline-block;padding:12px 22px;background:var(--tc);color:#fff;border:none;border-radius:10px;
  font-family:'Oswald',sans-serif;font-size:1.05rem;letter-spacing:.3px;cursor:pointer;transition:background .2s,transform .1s;text-align:center;}
.btn-primary:hover{background:var(--tc-dark);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary:disabled{background:var(--lock);cursor:default;}
.btn-outline{display:inline-block;padding:11px 20px;background:transparent;color:var(--tc-dark);border:2px solid var(--tc);
  border-radius:10px;font-family:'Oswald',sans-serif;cursor:pointer;transition:all .2s;}
.btn-outline:hover{background:var(--tc);color:#fff;}
.linkish{background:none;border:none;color:var(--tc-dark);cursor:pointer;font:inherit;text-decoration:underline;padding:0;}

/* ── Login ──────────────────────────────────────────────────────────────── */
#login-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:200;align-items:center;justify-content:center;}
#login-overlay.active{display:flex;}
.login-card{background:#fff;border-radius:16px;padding:40px;max-width:420px;width:90%;box-shadow:0 24px 64px rgba(0,0,0,.35);text-align:center;}
.login-card img{width:84px;height:84px;border-radius:50%;object-fit:cover;object-position:top;border:3px solid var(--tc);margin-bottom:14px;}
.login-card h2{font-family:'Oswald',sans-serif;font-size:1.8rem;margin-bottom:6px;}
.login-card>p{color:var(--text-muted);margin-bottom:22px;}
.login-hint{margin-top:16px;font-size:.8rem;color:var(--text-muted);}
.login-hint a{color:var(--text-muted);text-decoration:underline;}
.form-group{margin-bottom:14px;text-align:left;}
.form-group label{display:block;font-weight:700;font-size:.85rem;margin-bottom:5px;}
.form-group input{width:100%;padding:11px 14px;border:2px solid var(--border);border-radius:8px;font-family:'Nunito',sans-serif;font-size:1rem;}
.form-group input:focus{outline:none;border-color:var(--tc);}
#login-error{color:#ef4444;font-size:.85rem;margin-bottom:10px;display:none;}
.login-card .btn-primary{width:100%;}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero{background:linear-gradient(135deg,var(--dark),var(--dark2));color:#fff;padding:46px 24px 54px;}
.hero-inner{max-width:900px;margin:0 auto;text-align:center;}
.hero-avatars{display:flex;justify-content:center;margin-bottom:14px;}
.hero-avatars img{width:72px;height:72px;border-radius:50%;object-fit:cover;object-position:top;border:3px solid var(--tc);}
.hero-avatars .second{margin-left:-18px;border-color:#8B3FA8;}
.hero h1{font-family:'Oswald',sans-serif;font-size:2.4rem;font-weight:700;margin-bottom:10px;}
.hero h1 em{color:var(--tc);font-style:normal;}
.hero p{color:rgba(255,255,255,.82);max-width:640px;margin:0 auto;}
.progress-widget{margin-top:22px;max-width:460px;margin-left:auto;margin-right:auto;}
.progress-row{display:flex;justify-content:space-between;font-size:.85rem;color:rgba(255,255,255,.85);margin-bottom:6px;font-weight:700;}
.bar-outer{height:12px;background:rgba(255,255,255,.18);border-radius:10px;overflow:hidden;}
.bar-inner{height:100%;background:var(--tc);border-radius:10px;transition:width .4s;}

/* ── Main ───────────────────────────────────────────────────────────────── */
main{max-width:980px;margin:0 auto;padding:36px 20px 60px;}
.signed-out{text-align:center;color:var(--text-muted);padding:60px 0;}

/* ── Buch-Karten (Hub) ──────────────────────────────────────────────────── */
.book-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:26px;}
.book-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.09);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s;}
.book-card:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.14);}
.book-card.soon{opacity:.82;}
.book-cover{position:relative;aspect-ratio:16/9;background:linear-gradient(140deg,var(--bc),var(--ba));color:#fff;display:flex;flex-direction:column;justify-content:center;padding:22px 24px;}
.book-band{font-family:'Nunito',sans-serif;font-weight:800;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;opacity:.9;}
.book-name{font-family:'Oswald',sans-serif;font-size:1.9rem;line-height:1.05;margin-top:4px;text-shadow:0 2px 10px rgba(0,0,0,.18);}
.book-ear{position:absolute;right:18px;bottom:14px;font-size:2rem;opacity:.9;}
.book-body{padding:18px 22px 22px;display:flex;flex-direction:column;gap:12px;}
.book-meta{font-size:.82rem;color:var(--text-muted);font-weight:700;}
.book-prog{font-size:.85rem;color:var(--text-muted);}
.book-btn{margin-top:4px;}

/* ── Buch-Hero + Kapitelliste ───────────────────────────────────────────── */
.book-hero{background:linear-gradient(135deg,var(--ba),var(--bc));color:#fff;padding:34px 24px 40px;}
.book-hero .hero-inner{max-width:860px;text-align:left;}
.back-link{display:inline-block;color:rgba(255,255,255,.9);font-weight:700;font-size:.85rem;margin-bottom:12px;}
.book-kicker{font-weight:800;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;opacity:.9;}
.book-hero h1{font-family:'Oswald',sans-serif;font-size:2.1rem;margin:4px 0 16px;}

.chapter-list{list-style:none;padding:0;counter-reset:ch;display:flex;flex-direction:column;gap:10px;}
.chapter-row .ch-inner{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 18px;transition:border-color .15s,transform .1s;}
.chapter-row.open .ch-inner:hover{border-color:var(--tc);transform:translateX(3px);}
.chapter-row.locked .ch-inner{background:#f6f7f8;color:var(--lock);cursor:not-allowed;}
.chapter-row.done .ch-inner{border-color:var(--success);}
.ch-num{flex:0 0 40px;height:40px;border-radius:50%;background:var(--gray-light);display:flex;align-items:center;justify-content:center;
  font-family:'Oswald',sans-serif;font-size:1.1rem;color:var(--gray);}
.chapter-row.done .ch-num{background:var(--success);color:#fff;}
.chapter-row.open .ch-num{background:var(--tc);color:#fff;}
.ch-title{flex:1;font-weight:700;}
.ch-state{font-size:.82rem;color:var(--text-muted);white-space:nowrap;}

/* ── Kapitel-Seite ──────────────────────────────────────────────────────── */
.ch-bar{max-width:860px;margin:0 auto;padding:16px 20px 0;display:flex;justify-content:space-between;align-items:center;}
.ch-bar .back-link{color:var(--tc-dark);margin:0;}
.ch-count{font-size:.85rem;color:var(--text-muted);font-weight:700;}
.ch-main{max-width:860px;margin:0 auto;padding:16px 20px 70px;}

/* Player (sticky beim Scrollen zum Quiz) */
.player{position:sticky;top:calc(var(--head-h) + 8px);z-index:40;background:#fff;border:1px solid var(--border);border-radius:18px;
  box-shadow:0 10px 30px rgba(0,0,0,.10);padding:20px 22px;margin-bottom:26px;}
.player-head{text-align:center;margin-bottom:12px;}
.player-kicker{font-weight:800;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);}
.player-title{font-family:'Oswald',sans-serif;font-size:1.55rem;line-height:1.1;margin-top:2px;}
.pl-seek{display:flex;align-items:center;gap:12px;}
.pl-time{font-variant-numeric:tabular-nums;font-size:.85rem;color:var(--text-muted);min-width:42px;text-align:center;}
.pl-bar{flex:1;-webkit-appearance:none;appearance:none;height:8px;border-radius:6px;background:var(--border);cursor:pointer;}
.pl-bar::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--tc);border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.3);}
.pl-bar::-moz-range-thumb{width:18px;height:18px;border:3px solid #fff;border-radius:50%;background:var(--tc);}
.pl-controls{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:16px;}
.pl-play{width:64px;height:64px;border-radius:50%;border:none;background:var(--tc);color:#fff;font-size:1.5rem;cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(14,165,233,.4);transition:background .2s,transform .1s;}
.pl-play:hover{background:var(--tc-dark);}
.pl-play:active{transform:scale(.96);}
.pl-btn{background:var(--gray-light);border:1px solid var(--border);border-radius:12px;padding:10px 12px;cursor:pointer;
  display:flex;align-items:center;gap:3px;font-family:'Oswald',sans-serif;color:var(--gray);transition:background .15s;}
.pl-btn:hover{background:#eceae3;}
.pl-skip{font-size:.85rem;font-weight:700;}
.pl-skip-ico{font-size:1.2rem;}
.pl-speed{display:flex;flex-direction:column;align-items:center;font-size:.68rem;color:var(--text-muted);font-weight:700;gap:2px;}
.pl-speed select{font-family:'Nunito',sans-serif;font-weight:700;border:1px solid var(--border);border-radius:8px;padding:5px 6px;background:#fff;cursor:pointer;}
.pl-resume{margin-top:14px;text-align:center;font-size:.9rem;color:var(--tc-dark);background:rgba(14,165,233,.08);border-radius:10px;padding:8px 12px;}
.pl-hint{margin:12px 0 0;text-align:center;font-size:.78rem;color:var(--text-muted);}

/* Quiz */
.quiz-sec{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px 22px;box-shadow:0 6px 18px rgba(0,0,0,.05);}
.quiz-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
.quiz-head h2{font-family:'Oswald',sans-serif;font-size:1.5rem;}
.quiz-status{font-size:.85rem;font-weight:700;color:var(--tc-dark);background:var(--gray-light);padding:4px 12px;border-radius:20px;}
.quiz-intro{color:var(--text-muted);font-size:.92rem;}
.q{border:1px solid var(--border);border-radius:12px;padding:16px 16px 14px;margin-bottom:14px;transition:border-color .2s;}
.q-ok{border-color:var(--success);background:#f3fbf6;}
.q-bad{border-color:var(--bad);background:#fdf3f3;}
.q-text{font-weight:700;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.q-n{flex:0 0 26px;height:26px;border-radius:50%;background:var(--tc);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;font-family:'Oswald',sans-serif;}
.q-opts{display:flex;flex-direction:column;gap:8px;}
.opt{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:9px;padding:10px 13px;cursor:pointer;transition:border-color .15s,background .15s;}
.opt:hover{border-color:var(--tc);background:rgba(14,165,233,.04);}
.opt input{accent-color:var(--tc);width:17px;height:17px;}
.q-cat{display:flex;flex-direction:column;gap:9px;}
.cat-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.cat-txt{flex:1;min-width:140px;}
.cat-sel{border:1px solid var(--border);border-radius:8px;padding:8px 10px;font:inherit;background:#fff;cursor:pointer;}
.q-sol{margin-top:10px;font-size:.86rem;color:var(--tc-dark);background:var(--gray-light);border-radius:8px;padding:8px 11px;}
.quiz-actions{display:flex;gap:12px;margin-top:4px;}
.quiz-result{margin-top:14px;padding:13px 16px;border-radius:10px;font-weight:700;}
.quiz-result.ok{background:#e7f7ef;border:1px solid #9fd9bb;color:#1a6b3a;}
.quiz-result.warn{background:#fff6e5;border:1px solid #f1cf8a;color:#8a5a12;}
.quiz-result.err{background:#fdecec;border:1px solid #f0b4b4;color:#a12020;}
.next-wrap{margin-top:18px;text-align:center;}
.next-btn{font-size:1.15rem;padding:14px 30px;}

/* Kapitel-Navigation */
.ch-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px;}
.ch-nav-btn{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 18px;color:var(--gray);font-weight:700;transition:border-color .15s;}
.ch-nav-btn:hover{border-color:var(--tc);color:var(--tc-dark);}

/* ── Footer ─────────────────────────────────────────────────────────────── */
footer{text-align:center;color:var(--text-muted);font-size:.82rem;padding:28px 20px 40px;border-top:1px solid var(--border);background:#fff;}
footer a{color:var(--tc-dark);text-decoration:underline;}

@media(max-width:560px){
  .hero h1{font-size:2rem;} .player-title{font-size:1.3rem;}
  .pl-controls{gap:12px;} .pl-play{width:58px;height:58px;}
  .ch-bar{flex-direction:column;gap:4px;align-items:flex-start;}
}