:root{
  --navy:#1a2540; --navy2:#243152; --bg:#f0f2f5; --surface:#fff; --border:#e2e6ed;
  --text:#1a2540; --sub:#5a6478; --muted:#9aa3b4; --dim:#c8cdd8;
  --red:#e8234a; --green:#22c997; --green-ink:#0f9d74; --warn:#f59e0b; --info:#3b82f6;
  --radius:12px; --rsm:8px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --shadowmd:0 4px 12px rgba(0,0,0,.10);
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:ui-monospace,'SF Mono','Cascadia Code',Consolas,'Liberation Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5}
body{overflow-x:hidden}
.app{display:grid;grid-template-rows:60px 1fr;min-height:100vh}

header{background:var(--navy);display:flex;align-items:center;padding:0 24px;gap:12px;box-shadow:0 2px 8px rgba(0,0,0,.2);z-index:20;position:sticky;top:0}
.hlogo{display:flex;align-items:center;gap:10px}
.hlogo img{width:36px;height:36px;border-radius:50%;object-fit:cover;flex-shrink:0;background:#fff}
.horg{display:flex;flex-direction:column}
.htitle{font-size:15px;font-weight:700;color:#fff;letter-spacing:.01em}
.hsub{font-size:11px;color:rgba(255,255,255,.45)}
.hright{margin-left:auto;display:flex;align-items:center;gap:10px}
.hhint{font-size:11px;color:rgba(255,255,255,.4);text-align:right;max-width:240px;line-height:1.35}

.wrap{max-width:900px;margin:0 auto;width:100%;padding:18px 24px 48px}
@media(max-width:620px){.wrap{padding:16px 14px 40px}}

.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.pad{padding:18px}

.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.seg{display:flex;background:var(--bg);border:1px solid var(--border);border-radius:20px;overflow:hidden;padding:2px}
.seg button{background:none;border:none;color:var(--sub);padding:7px 15px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;border-radius:18px;transition:all .15s}
.seg button.active{background:var(--navy);color:#fff}
.seg button:not(.active):hover{color:var(--navy)}

.fl{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:14px 0 8px}
.filter-bar{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.fb{font-family:var(--font);font-size:12px;font-weight:500;padding:5px 13px;border-radius:20px;cursor:pointer;border:1.5px solid var(--border);background:var(--surface);color:var(--sub);transition:all .15s;white-space:nowrap}
.fb:hover{border-color:var(--navy);color:var(--navy)}
.fb.active{background:var(--navy);border-color:var(--navy);color:#fff}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0}
.stat{background:var(--bg);border:1px solid var(--border);border-radius:var(--rsm);padding:10px 12px}
.stat .v{font-size:22px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--navy)}
.stat .l{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-top:2px}
@media(max-width:560px){.stats{grid-template-columns:repeat(2,1fr)}}

.cat-tag{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#fff;background:var(--navy);padding:3px 9px;border-radius:5px;margin-bottom:12px}

#reference{font-family:var(--mono);font-size:18px;line-height:1.75;letter-spacing:.01em;user-select:none;min-height:62px;padding:14px;background:var(--bg);border:1px solid var(--border);border-radius:var(--rsm)}
#reference .char{white-space:pre-wrap}
#reference .char.correct{color:var(--green-ink)}
#reference .char.incorrect{color:var(--red);background:#fff1f2;border-radius:2px}
#reference .char.current{background:var(--navy);color:#fff;border-radius:2px}
#reference .char.pending{color:var(--dim)}

.funk-box{text-align:center;padding:16px;background:var(--bg);border:1px solid var(--border);border-radius:var(--rsm)}
.funk-box .hint{color:var(--sub);font-size:13px;margin-bottom:14px}
.playbtn{background:var(--navy);color:#fff;border:none;border-radius:10px;padding:13px 24px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;gap:9px}
.playbtn:hover{background:var(--navy2)}
.playbtn:disabled{opacity:.5;cursor:default}
.voicebar{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center;justify-content:center;margin-top:16px;color:var(--sub);font-size:12px}
.voicebar label{display:inline-flex;align-items:center;gap:7px}
.voicebar select{font-family:inherit;font-size:12px;padding:5px 8px;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text);max-width:220px}
.voicebar input[type=range]{accent-color:var(--navy);vertical-align:middle}
.warn-txt{color:var(--red);font-size:12px;margin-top:10px}

textarea#input{width:100%;margin-top:12px;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--rsm);color:var(--text);padding:14px;font-family:var(--mono);font-size:16px;line-height:1.6;resize:vertical;min-height:92px}
textarea#input:focus{outline:none;border-color:var(--navy)}
textarea#input:disabled{opacity:.6}

.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;align-items:center}
.btn{background:var(--surface);color:var(--text);border:1.5px solid var(--border);border-radius:var(--rsm);padding:9px 16px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;transition:all .15s}
.btn:hover{border-color:var(--navy);color:var(--navy)}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.primary:hover{background:var(--navy2)}
.toggle-row{display:flex;align-items:center;gap:7px;color:var(--sub);font-size:12px;margin-left:auto;cursor:pointer}
.toggle-row input{accent-color:var(--navy);width:15px;height:15px}

.result{background:var(--bg);border:1px solid var(--border);border-radius:var(--rsm);padding:14px;margin-top:14px}
.result.hidden{display:none}
.result h3{margin:0 0 8px;font-size:13px}
.result .line{font-size:14px;margin-bottom:4px}
.result .line b{color:var(--navy)}
.reveal-text{font-family:var(--mono);font-size:14px;line-height:1.7;background:var(--surface);border:1px solid var(--border);border-radius:var(--rsm);padding:12px;margin-top:10px;word-break:break-word}
.reveal-text .correct{color:var(--green-ink)}
.reveal-text .incorrect{color:var(--red);background:#fff1f2;text-decoration:line-through}
.reveal-text .missing{color:var(--dim)}

/* Prüfungsmodus */
.exam-bar{display:flex;align-items:center;gap:14px;background:var(--navy);color:#fff;border-radius:var(--rsm);padding:10px 16px;margin-bottom:12px}
.exam-time{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums}
.exam-time.low{color:#ffd1d1}
.exam-count{font-size:13px;color:rgba(255,255,255,.75)}
.exam-count b{color:#fff}
.exam-bar .btn{margin-left:auto;background:transparent;color:#fff;border-color:rgba(255,255,255,.3);padding:6px 12px}
.exam-bar .btn:hover{border-color:#fff;color:#fff}
.exam-result{border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-align:center}
.exam-verdict{font-size:20px;font-weight:800;margin-bottom:6px}
.exam-verdict.pass{color:var(--green-ink)}
.exam-verdict.fail{color:var(--warn)}
.exam-figures{font-size:15px;color:var(--text);margin-bottom:8px}
.exam-figures b{color:var(--navy);font-size:18px}
.exam-result .hint{color:var(--sub);font-size:12px;margin-bottom:14px}
.exam-result .btn{margin:0 auto}
.voice-info{font-size:11px;color:var(--muted);margin-top:10px}
.exam-dur-btn.active{background:var(--navy);border-color:var(--navy);color:#fff}

/* Schwebender Hilfe-Button + Overlay/Modal */
.help-fab{position:fixed;left:20px;bottom:20px;z-index:150;display:flex;align-items:center;gap:9px;background:var(--red);color:#fff;border:none;border-radius:30px;padding:11px 20px 11px 13px;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;box-shadow:0 6px 18px rgba(232,35,74,.42);transition:transform .15s,box-shadow .15s}
.help-fab:hover{transform:translateY(-2px);box-shadow:0 9px 24px rgba(232,35,74,.52)}
.help-fab:active{transform:translateY(0)}
.help-fab-q{display:inline-flex;align-items:center;justify-content:center;width:23px;height:23px;border-radius:50%;background:rgba(255,255,255,.25);font-size:15px;line-height:1}
@media(max-width:560px){.help-fab{left:16px;bottom:16px;padding:13px;gap:0}.help-fab-t{display:none}}
.overlay{position:fixed;inset:0;background:rgba(26,37,64,.55);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.overlay.open{display:flex}
.modal{background:var(--surface);border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,.3);width:100%;max-width:560px;max-height:85vh;overflow-y:auto;padding:24px;position:relative}
.modal-close{position:absolute;top:12px;right:16px;background:none;border:none;font-size:26px;line-height:1;color:var(--muted);cursor:pointer;font-family:inherit}
.modal-close:hover{color:var(--navy)}
.help-modal h2{font-size:19px;margin-bottom:16px;padding-right:30px}
.help-sec{margin-bottom:16px}
.help-sec:last-child{margin-bottom:0}
.help-sec h3{font-size:14px;color:var(--navy);margin-bottom:5px}
.help-sec p{font-size:13px;color:var(--sub);margin:0;line-height:1.55}
.help-sec ul{margin:5px 0 0 18px;padding:0}
.help-sec li{font-size:13px;color:var(--sub);margin-bottom:4px;line-height:1.5}
.help-chip{display:inline-block;background:var(--bg);border:1px solid var(--border);border-radius:5px;padding:1px 7px;font-size:12px;font-weight:600;color:var(--navy);white-space:nowrap}