:root{
  /* Helles, frisches Design */
  --bg:#f5f7fb; --card:#ffffff; --card2:#f1f4f9; --line:#e4e9f2;
  --text:#0f172a; --muted:#64748b; --accent:#2563eb; --accent-ink:#ffffff;
  --accent-soft:#eaf1ff; --accent2:#16a34a; --accent2-soft:#e7f6ec;
  --danger:#dc2626; --warn:#f59e0b;
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 6px 18px rgba(15,23,42,.06);
  --shadow-sm:0 1px 2px rgba(15,23,42,.05);
  --radius:16px; --radius-sm:11px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg); color:var(--text); line-height:1.5;
  max-width:520px; margin:0 auto; padding:0 16px 48px; font-size:16px;
  -webkit-font-smoothing:antialiased;
}
*::selection{background:var(--accent-soft)}

header{position:sticky;top:0;z-index:10;
  background:rgba(245,247,251,.85);backdrop-filter:saturate(180%) blur(12px);
  padding:14px 0 12px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:8px}
h1{font-size:19px;margin:0;display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:-.01em}
h2{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.7px;font-weight:700;margin:26px 0 12px}
h3{font-size:17px;margin:0 0 8px;font-weight:700;letter-spacing:-.01em}
.badge{font-size:11px;background:var(--warn);color:#fff;border-radius:7px;padding:2px 7px;font-weight:700}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;margin-bottom:12px;box-shadow:var(--shadow-sm)}
label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px;font-weight:500}
input,textarea,select{
  width:100%;background:var(--card);border:1px solid var(--line);color:var(--text);
  border-radius:var(--radius-sm);padding:12px;font-size:16px;font-family:inherit;
  transition:border-color .15s, box-shadow .15s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft)}
input::placeholder,textarea::placeholder{color:#9aa6b8}
textarea{min-height:120px;resize:vertical}

button{background:var(--accent);color:var(--accent-ink);border:none;border-radius:var(--radius-sm);
  padding:12px 16px;font-size:15px;font-weight:600;cursor:pointer;width:100%;
  box-shadow:var(--shadow-sm);transition:filter .15s, transform .05s}
button:hover{filter:brightness(1.05)}
button:active{transform:translateY(1px)}
button:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
button.secondary{background:var(--card);color:var(--text);border:1px solid var(--line);box-shadow:none}
button.secondary:hover{background:var(--card2);filter:none}
button.small{width:auto;padding:9px 13px;font-size:13px}
button.green{background:var(--accent2);color:#fff}
button.ghost{background:none;border:1px solid var(--line);color:var(--muted);width:auto;
  padding:7px 12px;font-size:13px;box-shadow:none;font-weight:500}
button.ghost:hover{background:var(--card2);filter:none;color:var(--text)}
button.google{background:var(--card);color:#1f2937;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;gap:8px}
button.google:hover{background:var(--card2);filter:none}
.row{display:flex;gap:8px}
.row>*{flex:1}
.row .fixed{flex:0 0 auto}
.row-stack{display:flex;flex-direction:column;gap:8px}
button.amber{background:var(--warn);color:#fff}
button.danger{background:var(--danger);color:#fff}

.pill{display:inline-block;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:14px;margin:0 6px 6px 0;cursor:pointer;font-weight:500;
  box-shadow:var(--shadow-sm);transition:all .15s}
.pill:hover{border-color:#cdd7e6}
.pill.active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}
.muted{color:var(--muted);font-size:14px}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--accent-soft);
  color:var(--accent);border:1px solid #d7e3ff;border-radius:9px;padding:4px 10px;letter-spacing:2px;font-weight:700}

.list-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);gap:10px}
.list-item:last-child{border-bottom:none}
.list-item .t{font-weight:600}
.list-item .tr{color:var(--muted);font-size:14px}
.tile{display:block;width:100%;text-align:left;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:15px;margin-bottom:10px;color:var(--text);cursor:pointer;
  box-shadow:var(--shadow-sm);transition:border-color .15s, transform .05s, box-shadow .15s}
.tile:hover{border-color:#cdd7e6;box-shadow:var(--shadow)}
.tile:active{transform:translateY(1px)}
.tile .sub{color:var(--muted);font-size:13px;margin-top:4px}
/* Lektionskachel + "aktuelle Lektion"-Markierung (teacher-course), siehe loadLessons() */
.tile-wrap{margin-bottom:12px}
.tile-wrap .tile{margin-bottom:6px}
.tile-current-row{padding:0 2px}
.bar{height:7px;background:var(--card2);border-radius:99px;overflow:hidden;margin-top:9px}
.bar>i{display:block;height:100%;background:var(--accent2);width:0;transition:width .4s}

/* Flashcard */
.flash{perspective:1200px;height:236px;margin:16px 0}
.flash-inner{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d;cursor:pointer}
.flash.flipped .flash-inner{transform:rotateY(180deg)}
.face{position:absolute;width:100%;height:100%;backface-visibility:hidden;display:flex;align-items:center;
  justify-content:center;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:20px;padding:22px;text-align:center;box-shadow:var(--shadow)}
.face .big{font-size:31px;font-weight:700;letter-spacing:-.02em}
.face .lbl{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px;font-weight:600}
.face .ex{font-size:14px;color:var(--muted);margin-top:14px;font-style:italic}
.back{transform:rotateY(180deg);background:var(--accent-soft);border-color:#d7e3ff}

.empty{text-align:center;color:var(--muted);padding:40px 12px}
.hidden{display:none}
.center{text-align:center}
.spacer{height:10px}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#0f172a;color:#fff;
  padding:11px 20px;border-radius:999px;font-weight:600;font-size:14px;opacity:0;transition:opacity .3s;
  pointer-events:none;z-index:50;max-width:90%;box-shadow:0 10px 30px rgba(15,23,42,.2)}
.toast.show{opacity:1}
.toast.err{background:var(--danger)}

.landing-hero{text-align:center;padding:34px 0 16px}
.hero-badge{width:76px;height:76px;border-radius:50%;background:var(--accent-soft);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:10px}
.hero-badge .ic{width:34px;height:34px;stroke-width:1.7;color:var(--accent)}
.hero-badge-icon{width:84px;height:84px;border-radius:22px;margin:0 auto 10px;display:block;
  box-shadow:0 6px 16px rgba(37,99,235,.28)}
.brand-icon{width:26px;height:26px;border-radius:7px;vertical-align:-.4em}
.role-btn{padding:18px;font-size:18px;margin-bottom:12px}
.who{font-size:13px;color:var(--muted)}
.small{font-size:12px}

/* Custom icons (Linien-Stil) */
.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round;flex:none;vertical-align:-.18em}
.ic-sm{width:15px;height:15px}
.ic-brand{color:var(--accent)}
h1 .ic{width:22px;height:22px}
.role-btn .ic{width:22px;height:22px}
button.hasic{display:inline-flex;align-items:center;justify-content:center;gap:8px}
.ghost.hasic{gap:6px}

/* Dezenter Text-Link (z.B. Lehrer-Zugang) */
.text-link{background:none;border:none;box-shadow:none;color:var(--muted);width:auto;
  font-size:14px;font-weight:500;padding:8px 10px;margin:0 auto;
  display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--accent);filter:none;background:none}
.text-link .ic{color:inherit}

/* Wochenliste */
.pool-group{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px;font-weight:600;
  margin:14px 0 6px;padding-top:8px;border-top:1px solid var(--line)}
.pool-group:first-child{border-top:none;padding-top:0;margin-top:0}
.week-row{display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:11px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}
.week-row:last-child{border-bottom:none}
.week-word{display:flex;flex-direction:column;min-width:100px}
.week-word .muted{font-size:13px}
.week-checks{display:flex;gap:6px;flex-wrap:wrap}
.chk{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--muted);
  background:var(--card2);border:1px solid var(--line);border-radius:999px;padding:6px 11px;cursor:pointer;margin:0;
  transition:all .15s}
.chk input{width:auto;margin:0;accent-color:var(--accent2)}
.chk.on{color:var(--accent2);border-color:var(--accent2);background:var(--accent2-soft);font-weight:600}

/* Wochenliste: Karten je gewähltem Wort (Etappe 5) */
.week-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-bottom:12px;box-shadow:var(--shadow-sm)}
.week-flip{perspective:1000px;height:88px;margin-bottom:10px;cursor:pointer}
.week-flip-inner{position:relative;width:100%;height:100%;transition:transform .4s;transform-style:preserve-3d}
.week-flip.flipped .week-flip-inner{transform:rotateY(180deg)}
.week-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;display:flex;
  flex-direction:column;align-items:center;justify-content:center;text-align:center;
  background:var(--card2);border-radius:12px;padding:8px}
.week-face .lbl{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px;font-weight:600;margin-bottom:4px}
.week-face .t{font-weight:700;font-size:16px}
.week-face-back{transform:rotateY(180deg);background:var(--accent-soft);border:1px solid #d7e3ff}
.week-face-flat{position:static;height:auto;margin-bottom:10px;background:var(--card2);border-radius:12px;padding:14px 8px}
.week-goal{display:inline-flex;align-items:center;gap:5px;margin-top:10px;font-size:12px;font-weight:700;color:var(--accent2)}
.wk-sentence{margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.wk-sentence .text-link{margin:0;padding:0}
.wk-sentence-row{margin-top:8px}

/* Schnellerfassung: FAB + Bottom-Sheet-Modal (Etappe 5) */
.fab{position:fixed;right:20px;bottom:24px;width:56px;height:56px;border-radius:50%;
  background:var(--accent2);color:#fff;box-shadow:0 10px 24px rgba(22,163,74,.35);
  display:flex;align-items:center;justify-content:center;padding:0;z-index:40}
.fab .ic{width:26px;height:26px;stroke-width:2.2}
.fab:active{transform:translateY(1px)}

.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:60;
  display:flex;align-items:flex-end;justify-content:center}
.modal-backdrop.hidden{display:none}
.modal-card{background:var(--card);width:100%;max-width:520px;border-radius:20px 20px 0 0;
  padding:20px 16px calc(20px + env(safe-area-inset-bottom));box-shadow:0 -10px 30px rgba(15,23,42,.2)}
@media (min-width:560px){
  .modal-backdrop{align-items:center}
  .modal-card{border-radius:var(--radius);margin:0 16px}
}

/* Bestenliste (Leaderboard): mobil eigener Reiter über .lb-tabs + setLbTab(), ab der
   Desktop-Breakpoint zweispaltig (body.wide-layout, siehe view() in app.js). Bestehende
   Klassen/Variablen wiederverwendet (.pill, .list-item, .card, --accent-soft). */
.lb-tabs{display:flex;gap:8px;margin:16px 0 4px}
.lb-tabs .pill{margin:0}
.lb-side.hidden,.lb-main.hidden{display:none}
.lb-section{margin-top:22px}
.lb-section:first-child{margin-top:0}
.lb-section h3{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;
  font-weight:700;margin:0 0 4px}
.lb-row .t{font-weight:600}
.lb-name{display:flex;align-items:center;gap:10px;min-width:0}
.lb-name .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-rank{flex:0 0 22px;width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--card2);color:var(--muted);font-size:11px;font-weight:700}
.lb-rank-1{background:#fdf1cf;color:#a5720a}
.lb-rank-2{background:#eef1f5;color:#64748b}
.lb-rank-3{background:#fbe6d8;color:#a1531c}
.lb-you{flex:0 0 auto;font-size:10px;font-weight:700;color:var(--accent);background:var(--accent-soft);
  border-radius:999px;padding:2px 8px;text-transform:uppercase;letter-spacing:.4px}
.lb-row-self{background:var(--accent-soft);border-radius:var(--radius-sm);margin:0 -16px;padding:10px 16px}
.lb-row-self .lb-rank{background:#fff}
@media (min-width:900px){
  body.wide-layout{max-width:900px}
  body.wide-layout .lb-tabs{display:none}
  body.wide-layout .lb-layout{display:flex;gap:24px;align-items:flex-start}
  body.wide-layout .lb-main{flex:1;min-width:0}
  body.wide-layout .lb-side{flex:0 0 300px}
  body.wide-layout .lb-side.hidden,
  body.wide-layout .lb-main.hidden{display:block}
}

/* Schüler-Wörter als klickbare Zeilen (Etappe 3) */
.word-btn{display:flex;justify-content:space-between;align-items:center;gap:10px;width:100%;
  background:none;border:none;box-shadow:none;color:var(--text);text-align:left;cursor:pointer;
  padding:12px 0;border-bottom:1px solid var(--line);border-radius:0;font-weight:400}
.word-btn:hover{filter:none;background:none}
.word-btn:last-child{border-bottom:none}
.word-btn:active{transform:none}
.word-btn-main{display:flex;flex-direction:column;min-width:0}
.word-btn-main .t{font-weight:600}
.word-btn-main .tr{color:var(--muted);font-size:14px}
.word-btn-side{display:flex;align-items:center;gap:8px;flex:none;color:var(--muted)}
.word-btn .chevron{color:#c2cbdb}
.tag{display:inline-block;background:var(--accent-soft);color:var(--accent);border:1px solid #d7e3ff;
  border-radius:999px;padding:2px 9px;font-size:11px;font-weight:600;white-space:nowrap}

/* Selbsteinschätzung (student-review, ersetzt Karteikarten, Etappe 5 Schritt 3) */
.rv-weekly-btn{width:auto;display:flex;align-items:center;justify-content:center;gap:6px;
  margin:0 auto;background:var(--card2);color:var(--muted);border:1px solid var(--line);
  box-shadow:none;font-size:13px;padding:9px 16px}
.rv-weekly-btn:hover{background:#e8edf5;filter:none}
.rv-weekly-btn.active{background:var(--accent2-soft);color:var(--accent2);border-color:var(--accent2);font-weight:600}

/* Vertiefen (student-deepen): Kontext-Lückensatz + Zuordnung statt Nochmal-Abfragen */
.de-label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;
  margin-bottom:8px;font-weight:600;text-align:center}
.de-sentence{font-size:18px;line-height:1.7;text-align:center;margin:14px 0;font-weight:500}
.de-blank{display:inline-block;min-width:64px;border-bottom:2px solid var(--accent);
  color:var(--accent);font-weight:700;text-align:center;padding:0 2px}
.de-options{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.de-option{width:auto}
.de-option.correct{background:var(--accent2-soft);border-color:var(--accent2);color:var(--accent2);font-weight:700}
.de-option.wrong{background:#fde8e8;border-color:#f6c9c9;color:var(--danger);font-weight:700}
.de-match-cols{display:flex;gap:12px;margin-top:14px}
.de-match-col{flex:1;display:flex;flex-direction:column;gap:8px;min-width:0}
.de-match-chip{width:100%;font-size:14px;white-space:normal;word-break:break-word}
.de-match-chip.selected{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.de-match-chip.correct{background:var(--accent2-soft);border-color:var(--accent2);color:var(--accent2);font-weight:700}
.de-match-chip.wrong{background:#fde8e8;border-color:#f6c9c9;color:var(--danger)}

/* Vertiefen · Vorarbeit-Phase (Übersetzung/Beispielsatz ergänzen, statt Kenne-ich-Karte) */
.de-prep-term, .de-recall .de-prep-term{font-size:26px;font-weight:700;text-align:center;margin:0 0 14px}
.de-prep-or{text-align:center;color:var(--muted);font-size:12px;text-transform:uppercase;
  letter-spacing:1px;margin:12px 0}
.de-prep textarea{margin-top:0}
.de-recall-result{display:inline-block;padding:10px 14px;border-radius:var(--radius-sm);font-weight:700}
.de-recall-result.correct{background:var(--accent2-soft);color:var(--accent2)}
.de-recall-result.wrong{background:#fde8e8;color:var(--danger)}

/* Wort-Detail */
.wd-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.contrib{display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:10px 0;border-bottom:1px solid var(--line)}
.contrib:last-child{border-bottom:none}
.contrib-body{display:flex;flex-direction:column;min-width:0}
.contrib-text{font-weight:500}
.contrib-author{color:var(--muted);font-size:12px;margin-top:2px}
.icon-btn{width:auto;flex:none;background:var(--card2);color:var(--muted);border:1px solid var(--line);
  box-shadow:none;padding:8px;border-radius:10px}
.icon-btn:hover{filter:none;background:#e8edf5;color:var(--text)}
.icon-btn.danger:hover{background:#fde8e8;color:var(--danger);border-color:#f6c9c9}
.icon-btn .ic{vertical-align:0}

/* Lehrer-Moderation */
.mod-group{margin-bottom:8px}
.mod-group:last-child{margin-bottom:0}
.mod-section-title{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.02em;margin:18px 0 4px}
.mod-group:first-child .mod-section-title{margin-top:0}
.mod-row{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;
  padding:12px 0;border-bottom:1px solid var(--line)}
.mod-row:last-child{border-bottom:none}
.mod-body{min-width:0}
.mod-head{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.mod-text{font-weight:500;word-break:break-word}
.mod-example{margin-top:2px}

/* Dashboard */
.dash-row{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--line)}
.dash-row:last-child{border-bottom:none}
.dash-word{flex:1;min-width:0}
.dash-word .small{margin-top:2px}
.diff{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:0 0 84px}
.diffbar{width:84px;height:8px;background:var(--card2);border-radius:99px;overflow:hidden}
.diffbar>i{display:block;height:100%;transition:width .4s}
.diffpct{font-size:12px;font-weight:700;color:var(--muted)}

/* Lehrermodus: schlanke Topbar statt Headerleiste + Hamburger-Slide-Menü */
body.teacher-mode > header{display:none}
.teacher-topbar{display:none}
body.teacher-mode .teacher-topbar{
  position:sticky;top:0;z-index:10;background:rgba(245,247,251,.85);
  backdrop-filter:saturate(180%) blur(12px);padding:10px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:8px}
.teacher-topbar-title{font-weight:700;font-size:16px;letter-spacing:-.01em;flex:1;text-align:center;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.drawer-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:70;display:flex}
.drawer-backdrop.hidden{display:none}
.drawer-panel{background:var(--card);width:min(280px,80vw);height:100%;
  padding:18px 16px calc(18px + env(safe-area-inset-bottom));box-shadow:6px 0 24px rgba(15,23,42,.18);
  display:flex;flex-direction:column;overflow-y:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px}
.drawer-title{font-weight:700;display:flex;align-items:center;gap:8px}
.drawer-item{width:100%;background:none;color:var(--text);border:none;box-shadow:none;
  text-align:left;justify-content:flex-start;display:flex;align-items:center;gap:10px;
  padding:12px 6px;font-weight:500;border-radius:var(--radius-sm)}
.drawer-item:hover{background:var(--card2);filter:none}
.drawer-item:active{transform:none}
.drawer-sep{height:1px;background:var(--line);margin:10px 0}

/* Schwebender Feedback-Button (Schülerbereich) + Screenshot-Einkreisen */
.fab-feedback{left:20px;right:auto;background:var(--accent);box-shadow:0 10px 24px rgba(37,99,235,.35)}
.fb-card{max-height:88vh;overflow-y:auto}
.fb-shot-wrap{position:relative;width:100%;border-radius:var(--radius-sm);overflow:hidden;
  border:1px solid var(--line);background:var(--card2)}
.fb-shot-wrap canvas{display:block;width:100%;height:auto;touch-action:none;cursor:crosshair}
.fb-lightbox{max-width:94vw;max-height:90vh;overflow:auto;text-align:center}
.fb-lightbox img{max-width:100%;border-radius:var(--radius-sm)}

/* Lehrer-Feedback-Liste (Priorisierung) */
.fb-row{margin-bottom:12px}
.fb-row-head{display:flex;align-items:center;justify-content:space-between;gap:8px;
  margin-bottom:8px;flex-wrap:wrap}
.fb-thumb{width:100%;border-radius:var(--radius-sm);border:1px solid var(--line);
  cursor:zoom-in;margin-bottom:8px;display:block}
.fb-comment{font-weight:500;margin-bottom:2px;word-break:break-word}
.fb-note{min-height:60px}
.fb-tag-hoch{background:#fde8e8;color:var(--danger);border-color:#f6c9c9}
.fb-tag-mittel{background:#fff4e0;color:#b45309;border-color:#fde3b0}
.fb-tag-niedrig{background:var(--accent2-soft);color:var(--accent2);border-color:#bfe6cc}
.fb-tag-spaeter{background:var(--card2);color:var(--muted);border-color:var(--line)}
.fb-tag-verworfen{background:var(--card2);color:var(--muted);border-color:var(--line);text-decoration:line-through}