:root{
  --bg:#f6f5f2;--card:#fff;--text:#1b1d21;--muted:#6a6e77;--line:#e6e4df;--chip:#ecebe7;
  --accent:#c62828;--btn:#c62828;--blue:#1c5fb5;--ok:#2e7d32;--bad:#c62828;--warn:#d98200;
  --side:#15171c;--side-text:#eceef2;--side-muted:#9aa0ab;--side-line:#262932;
  --shadow:0 1px 2px rgba(20,20,30,.05),0 8px 24px rgba(20,20,30,.05);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0f1013;--card:#191b20;--text:#f0f1f4;--muted:#9a9ea8;--line:#2a2d34;--chip:#25282f;
    --accent:#ef5350;--blue:#6aa5ff;--ok:#66bb6a;--bad:#ef5350;--warn:#ffb74d;--side:#0a0b0d;--shadow:none}
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--blue);text-decoration:none}
h1{font-size:1.7rem;line-height:1.2;letter-spacing:-.02em;margin:.1em 0 .15em}
h2{font-size:1.1rem;margin:0 0 .6em}
h3{font-size:1rem;margin:1.2em 0 .4em}
p{margin:.4em 0}
.sub{color:var(--muted);margin:0 0 1.1em}
button{font-family:inherit}
[hidden]{display:none!important}

/* ---------- Gerüst (Handy) ---------- */
.side{position:fixed;left:0;right:0;bottom:0;z-index:10;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.side .brand,nav .desk,nav .l{display:none}
.syncbadge.sidebadge{display:none}
nav{display:flex}
nav a{flex:1;min-width:0;text-align:center;padding:8px 2px 6px;font-size:.68rem;color:var(--muted)}
nav a i{display:block;font-style:normal;font-size:1.3rem;line-height:1.25}
nav a.on{color:var(--accent);font-weight:600}
main{padding:calc(18px + env(safe-area-inset-top)) 16px calc(92px + env(safe-area-inset-bottom))}
.wrap{max-width:1120px;margin:0 auto}
.wrap.narrow{max-width:720px}

.syncbadge{display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--card);color:var(--muted);font-size:.7rem;padding:3px 10px;border-radius:999px;cursor:pointer}
.syncbadge i{font-style:normal}
.syncbadge.float{position:fixed;top:calc(8px + env(safe-area-inset-top));right:12px;z-index:20}
.st-ok i{color:var(--ok)}
.st-auth i,.st-config i,.st-noapi i,.st-err i,.st-locked i{color:var(--bad)}
.st-offline i{color:var(--warn)}
.st-busy i{display:inline-block;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Bausteine ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;margin:12px 0;box-shadow:var(--shadow)}
.btn,button.btn{display:inline-block;background:var(--btn);color:#fff;border:0;border-radius:12px;padding:12px 20px;font-size:1rem;cursor:pointer}
.btn:hover{filter:brightness(1.07)}
button.ghost,a.ghost{display:inline-block;background:var(--chip);color:var(--text);border:0;border-radius:12px;padding:11px 16px;font-size:.95rem;cursor:pointer}
button.good,button.bad{flex:1;border:0;border-radius:12px;padding:14px;font-size:1rem;color:#fff;cursor:pointer}
button.good{background:#2e7d32}
button.bad{background:#c62828}
.row{display:flex;gap:10px;margin:14px 0;flex-wrap:wrap}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:.4em 0 1em}
.chip{border:0;background:var(--chip);color:var(--text);padding:8px 14px;border-radius:999px;font-size:.9rem;cursor:pointer}
.chip.on{background:var(--btn);color:#fff}
.prog{height:6px;background:var(--chip);border-radius:3px;overflow:hidden;margin:6px 0 14px}
.prog i{display:block;height:100%;background:var(--accent);transition:width .25s}
input[type=text],input[type=password],textarea,select{width:100%;padding:12px;border:2px solid var(--line);border-radius:12px;background:var(--card);color:var(--text);font:inherit}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent)}
textarea{min-height:90px}
label{display:block;margin:14px 0 4px;font-weight:600}
.ok{color:var(--ok);font-weight:600}
.no{color:var(--bad);font-weight:600;text-decoration:underline}
.empty{text-align:center}
.back{display:inline-block;margin-bottom:6px}
kbd{font:inherit;font-size:.78rem;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:0 6px;color:var(--muted)}

/* ---------- Start ---------- */
.dash{display:block}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:12px}
.stats div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 4px;text-align:center;box-shadow:var(--shadow)}
.stats b{display:block;font-size:1.3rem;letter-spacing:-.02em}
.stats span{font-size:.68rem;color:var(--muted)}
.nrow{display:flex;align-items:center;gap:12px;padding:12px 4px;color:var(--text);border-top:1px solid var(--line)}
.nrow:first-of-type{border-top:0}
.nrow .ico{font-size:1.5rem}
.nrow span:nth-child(2){flex:1}
.nrow b{display:block}
.nrow small{color:var(--muted)}
.nrow em{font-style:normal;color:var(--muted);font-size:1.4rem}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;color:var(--text);box-shadow:var(--shadow)}
.tile:hover{border-color:var(--accent)}
.tile b{display:block}
.tile span{color:var(--muted);font-size:.85rem}
.tile .ico{font-size:1.5rem;display:block;margin-bottom:4px}
.chart{display:flex;align-items:flex-end;gap:5px;height:110px;margin-top:6px}
.bar{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:4px;min-width:0}
.bar i{display:block;width:100%;background:var(--accent);border-radius:4px 4px 0 0;opacity:.9}
.bar span{font-size:.62rem;color:var(--muted)}
.grow{display:flex;align-items:center;gap:10px;padding:6px 0;color:var(--text);font-size:.9rem}
.grow span:first-child{width:1.4em;text-align:center}
.grow .gn{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.grow .gv{width:36px;text-align:right;color:var(--muted);font-size:.8rem}
.meter{height:4px;background:var(--chip);border-radius:2px;overflow:hidden;margin-top:6px}
.meter i{display:block;height:100%;background:var(--ok)}

/* ---------- Karteikarten ---------- */
.flash{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px 18px;min-height:250px;text-align:center;cursor:pointer;display:flex;flex-direction:column;justify-content:center;gap:10px;user-select:none;box-shadow:var(--shadow)}
.flash small{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:.7rem}
.flash .big{font-size:1.7rem;font-weight:650;line-height:1.25;letter-spacing:-.01em}
.flash .big2{font-size:1.45rem;font-weight:600;color:var(--accent);border-top:1px solid var(--line);padding-top:14px}
.flash .ex{color:var(--muted);font-style:italic;margin:.2em 0}
.flash .hint{color:var(--muted);font-size:.8rem;margin:0}
.keys{color:var(--muted);font-size:.8rem;text-align:center;display:none}

/* ---------- Quiz / Aufgaben ---------- */
.q{font-size:1.4rem;font-weight:650;text-align:center;margin:14px 0 18px}
.opt{display:flex;gap:10px;width:100%;text-align:left;background:var(--card);border:2px solid var(--line);color:var(--text);border-radius:14px;padding:13px 14px;margin:8px 0;font-size:1rem;cursor:pointer}
.opt:hover:not(:disabled){border-color:var(--accent)}
.opt kbd{display:none}
.opt.ok{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 15%,var(--card));font-weight:400}
.opt.no{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 15%,var(--card));font-weight:400;text-decoration:none}
.opt:disabled{cursor:default;color:var(--text)}
.feedback{color:var(--muted);font-style:italic;margin:10px 0}
.result{font-size:1.1rem;margin:12px 0}
.qs{font-size:1.3rem;line-height:1.55;font-weight:600;margin:12px 0 18px}
.gap{display:inline-block;min-width:4.2em;border-bottom:3px solid var(--accent);margin:0 4px}
.fb{border-radius:14px;padding:12px 14px;margin:14px 0}
.fb.good{background:color-mix(in srgb,var(--ok) 13%,var(--card));border:1px solid var(--ok)}
.fb.bad{background:color-mix(in srgb,var(--bad) 11%,var(--card));border:1px solid var(--bad)}
.fb p{color:var(--text)}
.tag{display:inline-block;background:var(--chip);color:var(--muted);font-size:.72rem;border-radius:999px;padding:2px 10px;margin-bottom:4px}
.wrow{border-top:1px solid var(--line);padding:10px 0}
.wrow small{display:block;color:var(--muted)}

/* ---------- Grammatik ---------- */
.split{display:block}
.split .list,.split .detail{min-width:0}
.split:not(.has-detail) .detail{display:none}
.split.has-detail .list{display:none}
.mixbtn{display:block;background:var(--btn);color:#fff;border-radius:14px;padding:12px 14px;margin:6px 0 10px;font-weight:600}
.mixbtn.on{outline:3px solid color-mix(in srgb,var(--accent) 35%,transparent)}
.gitem{display:flex;gap:12px;align-items:center;padding:11px 12px;border:1px solid var(--line);border-radius:14px;background:var(--card);margin:8px 0;color:var(--text)}
.gitem:hover{border-color:var(--accent)}
.gitem.on{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 25%,transparent)}
.gi{font-size:1.4rem}
.gt{flex:1;min-width:0}
.gt b{display:block;font-size:.95rem;line-height:1.3}
.gt small{color:var(--muted)}
.gv2{font-size:.8rem;color:var(--muted);white-space:nowrap}
.lvl{display:inline-block;font-size:.72rem;font-weight:700;color:#fff;background:var(--blue);border-radius:6px;padding:1px 8px;vertical-align:middle;margin-left:8px}
.gblock{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:14px;padding:4px 16px 12px;margin:12px 0}
.gblock ul{margin:.3em 0;padding-left:1.2em}
.gblock li{margin:.35em 0}
.tw{overflow-x:auto;margin:.5em 0}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:.8rem}
.exrow{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-top:1px solid var(--line)}
.exrow:first-of-type{border-top:0}
.spk{border:0;background:var(--chip);border-radius:10px;padding:6px 10px;cursor:pointer;font-size:1rem}
.exrow .en{font-weight:600;margin:0}
.exrow .de2{color:var(--muted);margin:0;font-size:.9rem}
.traps{background:color-mix(in srgb,var(--bad) 8%,var(--card));border:1px solid color-mix(in srgb,var(--bad) 35%,var(--line));border-radius:14px;padding:4px 16px 10px;margin:12px 0}
.traps p{margin:.5em 0}

/* ---------- Dialoge ---------- */
.dlist a{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:8px 0;color:var(--text)}
.dlist a:hover{border-color:var(--accent)}
.dlist a.on{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 25%,transparent)}
.dlist small{display:block;color:var(--muted)}
.msg{max-width:88%;padding:10px 14px;border-radius:16px;margin:8px 0;background:var(--card);border:1px solid var(--line);cursor:pointer}
.msg.r1{margin-left:auto;background:color-mix(in srgb,var(--blue) 14%,var(--card))}
.msg small{display:block;color:var(--muted);font-size:.72rem;margin-bottom:2px}
.msg p{margin:0}
.msg .de{color:var(--muted);font-size:.9rem;margin-top:4px}
.msg.now{outline:2px solid var(--accent)}

/* ---------- Merkhilfen ---------- */
.refgrid{display:grid;grid-template-columns:1fr;gap:0 16px}
.ref dl{margin:0}
.ref dt{font-weight:600}
.ref dd{margin:0 0 8px;color:var(--muted)}
.ref .two{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}

/* ---------- Laptop ---------- */
@media (min-width:900px){
  .shell{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:100vh}
  .side{position:sticky;top:0;bottom:auto;height:100vh;display:flex;flex-direction:column;gap:18px;padding:26px 14px 18px;background:var(--side);color:var(--side-text);border:0;z-index:5}
  .side .brand{display:flex;align-items:center;gap:12px;padding:0 10px 14px;border-bottom:1px solid var(--side-line)}
  .logo{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:#c62828;color:#fff;font-weight:800;letter-spacing:.02em}
  .brand b{display:block;line-height:1.2}
  .brand small{color:var(--side-muted);font-size:.74rem}
  nav{flex-direction:column;gap:2px;flex:1}
  nav a{flex:none;display:flex;align-items:center;gap:12px;text-align:left;padding:10px 12px;border-radius:12px;font-size:.96rem;color:var(--side-muted)}
  nav a:hover{background:rgba(255,255,255,.06);color:var(--side-text)}
  nav a.on{background:rgba(255,255,255,.1);color:#fff;font-weight:600}
  nav a i{display:inline;font-size:1.15rem;width:1.6em;text-align:center}
  nav .s{display:none}
  nav .l,nav .desk{display:inline}
  nav a.desk{display:flex}
  nav a.desk:first-of-type{margin-top:0}
  .syncbadge.sidebadge{display:flex;background:transparent;border-color:var(--side-line);color:var(--side-muted);font-size:.78rem;padding:7px 12px;border-radius:12px;justify-content:flex-start}
  .sidebadge:hover{border-color:var(--side-muted)}
  .syncbadge.float{display:none}
  main{padding:44px 56px 64px}
  h1{font-size:2.1rem}
  .wrap.narrow{max-width:760px}

  .dash{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,1fr);gap:32px;align-items:start}
  .stats b{font-size:1.6rem}
  .stats span{font-size:.78rem}
  .tiles{grid-template-columns:repeat(3,1fr)}
  .flash{min-height:340px;padding:40px 30px}
  .flash .big{font-size:2.3rem}
  .flash .big2{font-size:1.8rem}
  .keys{display:block;margin-top:6px}
  .q{font-size:1.8rem}
  .opt kbd{display:inline-block;flex:none}
  .qs{font-size:1.5rem}
  .split{display:grid;grid-template-columns:340px minmax(0,1fr);gap:36px;align-items:start}
  .split .list{display:block!important;position:sticky;top:28px;max-height:calc(100vh - 56px);overflow:auto;padding:0 6px 0 0}
  .split .detail{display:block!important}
  .back{display:none}
  .refgrid{grid-template-columns:1fr 1fr}
  .msg{max-width:78%}
}
@media (min-width:1300px){
  main{padding-left:72px;padding-right:72px}
  .refgrid{grid-template-columns:1fr 1fr 1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}