:root {
  --bg: #f4f5fb; --surface: #ffffff; --surface-2: #f0f1f9; --ink: #1a1c2c; --ink-2: #53566e; --ink-3: #8a8da6;
  --line: #e3e5f0; --primary: #4f46e5; --primary-2: #7c3aed; --primary-ink: #ffffff;
  --good: #15803d; --good-bg: #e7f6ec; --warn: #b45309; --warn-bg: #fdf1dc; --bad: #b91c1c; --bad-bg: #fde8e8;
  --c-ok: #3b6fe0; --c-bad: #f0922b;
  --shadow: 0 1px 2px rgba(26,28,44,.05), 0 8px 24px rgba(26,28,44,.06);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f111b; --surface: #181b2a; --surface-2: #202439; --ink: #eceef8; --ink-2: #b0b4cc; --ink-3: #7c8099;
    --line: #2a2e45; --primary: #7c78f5; --primary-2: #a78bfa; --primary-ink: #0f111b;
    --good: #5fd48a; --good-bg: #14301f; --warn: #f5b45c; --warn-bg: #36280f; --bad: #f58a8a; --bad-bg: #3a1618;
    --c-ok: #6d9bff; --c-bad: #f7a84f;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.5;
  font: 16px/1.5 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; min-height: 100vh;
  background-image: radial-gradient(900px 400px at 85% -10%, rgba(124,58,237,.10), transparent),
                    radial-gradient(700px 400px at -10% 0%, rgba(79,70,229,.10), transparent); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: 1.9rem; } h2 { font-size: 1.2rem; } h3 { font-size: 1rem; }
p { margin: 0 0 1em; }
.muted { color: var(--ink-2); } .small { font-size: .875rem; } .right { text-align: right; } .nowrap { white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Kopfzeile */
.topbar { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(12px); background: color-mix(in srgb, var(--surface) 80%, transparent);
  border-bottom: 1px solid var(--line); }
.topbar .inner { max-width: 1120px; margin: 0 auto; padding: .7rem 1.25rem; display: flex; align-items: center; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--ink); font-size: 1.05rem; }
.brand:hover { text-decoration: none; }
.logo { width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: 0 4px 12px rgba(79,70,229,.35); }
.nav { display: flex; gap: .25rem; margin-left: 1rem; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--ink-2); padding: .4rem .8rem; border-radius: 10px; font-weight: 500; }
.nav a:hover { background: var(--surface-2); text-decoration: none; }
.nav a.active { background: var(--surface-2); color: var(--ink); }
.who { display: flex; align-items: center; gap: .75rem; color: var(--ink-2); font-size: .9rem; }
main { max-width: 1120px; margin: 0 auto; padding: 1.75rem 1.25rem 4rem; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-head p { margin: 0; }

/* Karten und Raster */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.card + .card, .grid + .card, .card + .grid, .grid + .grid { margin-top: 1.25rem; }
.grid { display: grid; gap: 1.25rem; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.tiles { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); margin-bottom: 1.25rem; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow); }
.tile .label { color: var(--ink-2); font-size: .85rem; }
.tile .value { font-size: 2rem; font-weight: 750; letter-spacing: -.02em; line-height: 1.15; }
.tile .sub { color: var(--ink-3); font-size: .8rem; }
.hero { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; border: 0; display: flex; gap: 1.5rem;
  align-items: center; justify-content: space-between; flex-wrap: wrap; }
.hero h2 { font-size: 1.5rem; margin-bottom: .25rem; } .hero p { margin: 0; opacity: .9; }
.hero .btn { background: #fff; color: #3b2fc7; }

/* Formulare und Knöpfe */
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
input[type=text], input[type=password], input[type=file], select, textarea {
  width: 100%; padding: .7rem .85rem; border-radius: 12px; border: 1px solid var(--line); background: var(--surface);
  color: var(--ink); font: inherit; }
textarea { min-height: 7rem; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: transparent; }
.field { margin-bottom: 1rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: 0; cursor: pointer; font: inherit;
  font-weight: 600; padding: .65rem 1.1rem; border-radius: 12px; color: var(--primary-ink); background: var(--primary);
  transition: transform .06s, filter .15s; }
.btn:hover { filter: brightness(1.08); text-decoration: none; } .btn:active { transform: translateY(1px); }
.btn.secondary { background: var(--surface-2); color: var(--ink); }
.btn.danger { background: var(--bad-bg); color: var(--bad); }
.btn.small { padding: .35rem .7rem; font-size: .85rem; border-radius: 9px; }
.btn.big { padding: .9rem 1.6rem; font-size: 1.05rem; border-radius: 14px; }
.row { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
form.inline { display: inline; }
.alert { padding: .75rem 1rem; border-radius: 12px; margin-bottom: 1.25rem; font-weight: 500; }
.alert.ok { background: var(--good-bg); color: var(--good); } .alert.err { background: var(--bad-bg); color: var(--bad); }
.hint { background: var(--surface-2); border-radius: 12px; padding: .75rem 1rem; font-size: .9rem; color: var(--ink-2); }
code, .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .9em; }
code { background: var(--surface-2); padding: .1rem .35rem; border-radius: 6px; }

/* Tabellen */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
th { text-align: left; color: var(--ink-2); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
  padding: .5rem .75rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: .65rem .75rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: color-mix(in srgb, var(--surface-2) 60%, transparent); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* Badges, Balken */
.badge { display: inline-block; padding: .15rem .6rem; border-radius: 999px; font-size: .78rem; font-weight: 600; background: var(--surface-2); color: var(--ink-2); }
.badge.good { background: var(--good-bg); color: var(--good); } .badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); } .badge.info { background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--primary); }
.bar { height: 8px; border-radius: 99px; background: var(--surface-2); overflow: hidden; min-width: 80px; }
.bar > span { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--primary), var(--primary-2)); }
.score { display: inline-flex; align-items: center; gap: .5rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.legend { display: flex; gap: 1rem; font-size: .85rem; color: var(--ink-2); margin-bottom: .5rem; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: .35rem; }

/* Diagramm */
.chart { width: 100%; height: auto; display: block; }
.chart .grid-line { stroke: var(--line); stroke-width: 1; }
.chart text { fill: var(--ink-3); font-size: 11px; font-family: inherit; }
.chart .ok { fill: var(--c-ok); } .chart .bad { fill: var(--c-bad); }
.chart .hit { fill: transparent; } .chart .hit:hover { fill: color-mix(in srgb, var(--ink) 6%, transparent); }

/* Anmeldung / Start */
.center { min-height: 78vh; display: grid; place-items: center; }
.auth { width: min(440px, 100%); }
.landing { text-align: center; max-width: 760px; margin: 2rem auto 0; }
.landing h1 { font-size: 2.6rem; }
.choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; margin-top: 2rem; text-align: left; }
.choice { display: block; color: var(--ink); transition: transform .12s, box-shadow .12s; }
.choice:hover { transform: translateY(-3px); text-decoration: none; box-shadow: 0 14px 34px rgba(79,70,229,.18); }
.choice .emoji { font-size: 2rem; }

/* Trainer */
.trainer { max-width: 640px; margin: 0 auto; }
.progress-head { display: flex; justify-content: space-between; color: var(--ink-2); font-size: .9rem; margin-bottom: .5rem; }
.flash { text-align: center; padding: 2.2rem 1.5rem; }
.flash .prompt { font-size: clamp(1.8rem, 6vw, 2.6rem); font-weight: 750; letter-spacing: -.02em; margin: .4rem 0 1.2rem; overflow-wrap: anywhere; }
.flash .lang { color: var(--ink-3); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
.answer { text-align: center; font-size: 1.3rem !important; padding: .9rem 1rem !important; }
.chars { display: flex; gap: .4rem; justify-content: center; margin: .75rem 0 1rem; }
.chars button { border: 1px solid var(--line); background: var(--surface-2); color: var(--ink); border-radius: 9px; font: inherit;
  width: 2.4rem; height: 2.4rem; cursor: pointer; }
.chars button:hover { background: var(--surface); }
.feedback { border-radius: 14px; padding: 1rem 1.25rem; margin-top: 1rem; text-align: left; }
.feedback.correct { background: var(--good-bg); color: var(--good); } .feedback.wrong { background: var(--bad-bg); color: var(--bad); }
.feedback.almost { background: var(--warn-bg); color: var(--warn); }
.feedback .solution { font-size: 1.25rem; font-weight: 700; color: var(--ink); }
.pill { display: inline-block; background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--primary); border-radius: 99px;
  padding: .1rem .6rem; font-size: .75rem; font-weight: 700; margin-left: .4rem; vertical-align: middle; }
.result-score { font-size: 3.4rem; font-weight: 800; letter-spacing: -.03em; }
[hidden] { display: none !important; }
@media (max-width: 640px) { .who span { display: none; } .nav { margin-left: 0; } h1 { font-size: 1.5rem; } }
@media print { .topbar, .no-print { display: none !important; } body { background: #fff; color: #000; } .card { box-shadow: none; } }

/* Korrekturen nach Sichtprüfung */
h1, h2, h3 { font-weight: 700; }
.grid { align-items: start; }
.grid > .card, .grid > section { margin-top: 0; }
input[type=file]::file-selector-button { border: 0; border-radius: 8px; padding: .4rem .8rem; margin-right: .75rem; background: var(--surface-2);
  color: var(--ink); font: inherit; font-weight: 600; cursor: pointer; }
@media (max-width: 640px) {
  .topbar .inner { flex-wrap: wrap; gap: .4rem .75rem; }
  .nav { order: 3; flex-basis: 100%; margin-left: 0; }
  .who { margin-left: auto; }
  main { padding-top: 1.25rem; }
}

/* Sprachwahl, Beispielsatz-Block */
.lang-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.lang-btn { display: flex; flex-direction: column; gap: .15rem; align-items: center; padding: 1.4rem 1rem; border-radius: var(--radius);
  border: 2px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; font: inherit; box-shadow: var(--shadow); }
.lang-btn:hover { border-color: var(--primary); transform: translateY(-2px); }
.lang-btn.current { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 10%, var(--surface)); }
.lang-btn .native { font-size: 1.6rem; font-weight: 700; }
.example { margin-top: .75rem; padding-top: .75rem; border-top: 1px solid color-mix(in srgb, currentColor 25%, transparent); color: var(--ink); }
.example .de { font-size: 1.05rem; font-weight: 600; }
.example .tr { color: var(--ink-2); }
td input[type=text] { padding: .45rem .6rem; border-radius: 9px; min-width: 150px; }
.example .tr { text-align: start; }