/* Sachkunde 34a Lerntrainer – Gestaltung
   Identität: Nachtblau + Signal-Amber, DIN-artige Überschriften, ruhige Papierflächen. */
:root {
  --bg: #f3f1ea;
  --surface: #ffffff;
  --surface-2: #f8f6f0;
  --ink: #14212b;
  --ink-2: #4a5964;
  --line: #ddd8cb;
  --line-strong: #b9b3a3;
  --primary: #15384f;
  --primary-hover: #0f2a3c;
  --primary-ink: #ffffff;
  --primary-soft: #e2ebf1;
  --accent: #a8690e;
  --accent-soft: #f6ead0;
  --ok: #1b7446;
  --ok-soft: #e1f1e7;
  --bad: #b0281f;
  --bad-soft: #f9e5e2;
  --warn: #855600;
  --warn-soft: #f7ecce;
  --info: #2a5c88;
  --info-soft: #e1ecf6;
  --rail: #0f2a3c;
  --rail-ink: #c5d3dc;
  --rail-active: #ffffff;
  --signal: #e8a530;

  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 48px;
  --r-s: 6px; --r-m: 10px; --r-l: 14px;
  --shadow: 0 1px 2px rgba(20, 33, 43, .06), 0 2px 8px rgba(20, 33, 43, .04);
  --shadow-up: 0 -2px 12px rgba(20, 33, 43, .08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --display: "Bahnschrift", "DIN Alternate", "DIN 2014", "Roboto Condensed", "Arial Narrow", system-ui, sans-serif;
  --t: 160ms ease;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d151b; --surface: #15202a; --surface-2: #1a2833; --ink: #e9eff3; --ink-2: #a5b4bf;
    --line: #283843; --line-strong: #3c505e;
    --primary: #8cc3e0; --primary-hover: #a7d3ea; --primary-ink: #0b1b25; --primary-soft: #1c3342;
    --accent: #e3ae55; --accent-soft: #382c14;
    --ok: #62c592; --ok-soft: #153224; --bad: #f28d83; --bad-soft: #3a1c1a;
    --warn: #e4b85f; --warn-soft: #392d13; --info: #8ab9e3; --info-soft: #182c3f;
    --rail: #0a1218; --rail-ink: #a5b4bf; --signal: #e8a530;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4); --shadow-up: 0 -2px 12px rgba(0, 0, 0, .4);
  }
}
:root[data-theme="dark"] {
  --bg: #0d151b; --surface: #15202a; --surface-2: #1a2833; --ink: #e9eff3; --ink-2: #a5b4bf;
  --line: #283843; --line-strong: #3c505e;
  --primary: #8cc3e0; --primary-hover: #a7d3ea; --primary-ink: #0b1b25; --primary-soft: #1c3342;
  --accent: #e3ae55; --accent-soft: #382c14;
  --ok: #62c592; --ok-soft: #153224; --bad: #f28d83; --bad-soft: #3a1c1a;
  --warn: #e4b85f; --warn-soft: #392d13; --info: #8ab9e3; --info-soft: #182c3f;
  --rail: #0a1218; --rail-ink: #a5b4bf; --signal: #e8a530;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4); --shadow-up: 0 -2px 12px rgba(0, 0, 0, .4);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--font); overflow-x: hidden; }
h1, h2, h3, h4, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3, .eyebrow, .brand, .big, .stat-v, .part, .gnum { font-family: var(--display); }
h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.4rem); line-height: 1.12; font-weight: 600; letter-spacing: -.01em; text-wrap: balance; }
h2 { font-size: 1.3rem; line-height: 1.25; font-weight: 600; text-wrap: balance; }
h3 { font-size: 1.05rem; line-height: 1.3; font-weight: 600; margin-bottom: var(--s3); }
h4 { font-size: .9rem; margin: var(--s4) 0 var(--s2); }
a { color: var(--primary); text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; border-radius: var(--r-s); }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--ink-2); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: var(--s3); top: -60px; background: var(--primary); color: var(--primary-ink); padding: var(--s2) var(--s4); border-radius: var(--r-s); z-index: 100; }
.skip:focus { top: var(--s3); }
.ic { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.25em; }
.ic-ok { color: var(--ok); } .ic-bad { color: var(--bad); }

/* ---------- Grundgerüst ---------- */
.app { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: 100vh; }
.rail { background: var(--rail); color: var(--rail-ink); padding: var(--s5) var(--s3); position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; gap: var(--s5); }
.brand { display: flex; align-items: center; gap: var(--s3); padding: 0 var(--s2); color: #fff; text-decoration: none; font-size: 1.05rem; font-weight: 600; line-height: 1.15; }
.brand small { display: block; font: 400 .72rem/1.3 var(--font); color: var(--rail-ink); letter-spacing: .02em; }
.brand svg { width: 38px; height: 38px; flex: none; }
.rail nav { display: flex; flex-direction: column; gap: 2px; }
.rail nav a { display: flex; align-items: center; gap: var(--s3); padding: 10px var(--s3); border-radius: var(--r-s); color: var(--rail-ink); text-decoration: none; font-size: .95rem; border-left: 3px solid transparent; transition: background var(--t), color var(--t); }
.rail nav a:hover { background: rgba(255, 255, 255, .07); color: #fff; }
.rail nav a[aria-current] { background: rgba(255, 255, 255, .1); color: var(--rail-active); border-left-color: var(--signal); font-weight: 600; }
.rail hr { border: 0; border-top: 1px solid rgba(255, 255, 255, .12); margin: var(--s3) var(--s2); }
.rail-foot { margin-top: auto; font-size: .75rem; padding: 0 var(--s2); line-height: 1.45; opacity: .85; }
.stage { min-width: 0; }
#main { max-width: 1040px; margin: 0 auto; padding: var(--s6) var(--s5) var(--s7); display: flex; flex-direction: column; gap: var(--s5); outline: none; }
#banner { max-width: 1040px; margin: 0 auto; padding: 0 var(--s5); }
#banner .note { margin-top: var(--s4); }
#banner .actions { margin-top: var(--s2); }
.app { padding-top: env(safe-area-inset-top); }
.tabbar, #sheet { display: none; }

.pagehead { display: flex; flex-direction: column; gap: var(--s2); }
.eyebrow { font-size: .78rem; letter-spacing: .09em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.lead { color: var(--ink-2); max-width: 68ch; }
.crumb a { display: inline-flex; align-items: center; gap: var(--s2); text-decoration: none; font-size: .9rem; font-weight: 600; }

/* ---------- Karten, Raster ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-l); padding: var(--s5); box-shadow: var(--shadow); display: flex; flex-direction: column; gap: var(--s3); min-width: 0; }
.card h3 + .muted { margin-top: calc(var(--s2) * -1); }
.cardfoot { margin-top: auto; font-size: .88rem; padding-top: var(--s2); }
.grid { display: grid; gap: var(--s5); }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: flex; gap: var(--s5); justify-content: space-between; align-items: center; flex-wrap: wrap; }
.split > div:first-child { flex: 1 1 280px; display: flex; flex-direction: column; gap: var(--s2); }
.center { align-items: center; text-align: center; justify-content: center; }
.actions { display: flex; flex-wrap: wrap; gap: var(--s3); margin-top: var(--s2); }

/* ---------- Schaltflächen ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); min-height: 44px; padding: 0 var(--s4); border: 1px solid var(--line-strong); border-radius: var(--r-m); background: var(--surface); color: var(--ink); font-weight: 600; font-size: .95rem; text-decoration: none; transition: background var(--t), border-color var(--t), transform var(--t); white-space: nowrap; }
.btn:hover { background: var(--surface-2); border-color: var(--ink-2); color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: var(--primary-ink); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-lg { min-height: 52px; padding: 0 var(--s5); font-size: 1rem; }
.btn-sm { min-height: 36px; padding: 0 var(--s3); font-size: .88rem; }
.btn-danger { background: var(--bad); border-color: var(--bad); color: var(--surface); }
.btn-danger:hover { background: var(--bad); border-color: var(--bad); color: var(--surface); filter: brightness(.92); }
.btn-bad { color: var(--bad); border-color: var(--bad); }
.btn-ok { color: var(--ok); border-color: var(--ok); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.btn[aria-pressed="true"] { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
.linkbtn { background: none; border: 0; padding: 0; color: var(--primary); text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.iconbtn { display: inline-flex; align-items: center; gap: 6px; background: none; border: 1px solid transparent; border-radius: var(--r-s); padding: 6px 10px; color: var(--ink-2); font-size: .85rem; min-height: 36px; }
.iconbtn:hover { background: var(--surface-2); }
.iconbtn[aria-pressed="true"] { color: var(--accent); }
.iconbtn[aria-pressed="true"] .ic { fill: currentColor; }

/* ---------- Chips, Hinweise ---------- */
.chip { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; line-height: 1.4; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--line); }
.chip .ic { width: 1em; height: 1em; stroke-width: 2.4; }
.chip-ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.chip-bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.chip-warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.chip-info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.chip-primary { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.chip-accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.note { display: flex; gap: var(--s3); padding: var(--s4); border-radius: var(--r-m); border: 1px solid; font-size: .93rem; }
.note > .ic { margin-top: 2px; }
.note-warn { background: var(--warn-soft); border-color: transparent; color: var(--ink); }
.note-warn > .ic { color: var(--warn); }
.note-info { background: var(--info-soft); border-color: transparent; }
.note-info > .ic { color: var(--info); }
.note-bad { background: var(--bad-soft); border-color: transparent; margin-top: var(--s3); }
.note-bad > .ic { color: var(--bad); }
.note .btn { margin-top: var(--s3); }
.hint { display: flex; gap: var(--s2); align-items: flex-start; font-size: .88rem; color: var(--ink-2); }
.hint.err { color: var(--bad); }
.stand { display: flex; gap: var(--s3); font-size: .86rem; color: var(--ink-2); border-top: 1px solid var(--line); padding-top: var(--s4); }
.stand .ic { color: var(--info); margin-top: 2px; }
.disclaimer { font-size: .88rem; color: var(--ink-2); border-left: 3px solid var(--signal); padding-left: var(--s3); }
.empty { padding: var(--s5); text-align: center; color: var(--ink-2); }

/* ---------- Fortschritt ---------- */
.bar { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--primary); border-radius: 999px; transition: width 300ms ease; }
.bar-ok > i { background: var(--ok); } .bar-bad > i { background: var(--bad); } .bar-warn > i { background: var(--warn); } .bar-info > i { background: var(--info); }
.ring { position: relative; width: 132px; height: 132px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 10; }
.ring-bg { stroke: var(--line); }
.ring-fg { stroke: var(--primary); stroke-linecap: round; transition: stroke-dashoffset 500ms ease; }
.ring-num { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 2px; font-family: var(--display); }
.ring-num b { font-size: 2.2rem; font-weight: 600; line-height: 1; font-variant-numeric: tabular-nums; }
.ring-num span { font-size: 1rem; color: var(--ink-2); margin-top: .55em; }
.goal { display: flex; flex-direction: column; gap: 6px; }
.goal-top { display: flex; justify-content: space-between; gap: var(--s3); font-size: .92rem; }
.big { font-size: 2.6rem; line-height: 1; font-weight: 600; }
.big-s { font-family: var(--display); font-size: 1.35rem; font-weight: 600; line-height: 1.2; }
.unit { font-size: 1rem; color: var(--ink-2); font-weight: 400; font-family: var(--font); }

/* ---------- Start ---------- */
.hero { flex-direction: row; align-items: center; gap: var(--s6); padding: var(--s6); border-top: 4px solid var(--primary); }
.hero-body { display: flex; flex-direction: column; gap: var(--s2); min-width: 0; }
.hero h2 { font-size: 1.6rem; }
.card > .btn, .card > a.btn { align-self: flex-start; margin-top: auto; }

/* ---------- Fortschrittsseite ---------- */
.stats { gap: var(--s4); }
.stat { padding: var(--s4); gap: 2px; }
.stat-l { font-size: .8rem; color: var(--ink-2); }
.stat-v { font-size: 1.9rem; font-weight: 600; line-height: 1.15; }
.stat-s { font-size: .8rem; color: var(--ink-2); }
.next { flex-direction: row; align-items: center; justify-content: space-between; flex-wrap: wrap; border-left: 4px solid var(--signal); }
.next h3 { margin: 4px 0; font-size: 1.2rem; }
.kv { display: grid; grid-template-columns: minmax(110px, max-content) 1fr; gap: 6px var(--s4); font-size: .93rem; }
.kv dt { color: var(--ink-2); }
.kv dd { min-width: 0; overflow-wrap: anywhere; }
.lamps { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--s3); }
.lamp { display: flex; gap: var(--s3); align-items: center; padding: var(--s3); border: 1px solid var(--line); border-radius: var(--r-m); text-decoration: none; color: inherit; transition: border-color var(--t), background var(--t); }
.lamp:hover { border-color: var(--line-strong); background: var(--surface-2); color: inherit; }
.lamp-dot { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; flex: none; }
.lamp-dot .ic { stroke-width: 2.4; }
.lamp-ok { background: var(--ok-soft); color: var(--ok); } .lamp-bad { background: var(--bad-soft); color: var(--bad); }
.lamp-warn { background: var(--warn-soft); color: var(--warn); } .lamp-info { background: var(--info-soft); color: var(--info); }
.lamp-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 5px; font-size: .82rem; }
.lamp-main b { font-size: .95rem; }
.rows li { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); padding: var(--s3) 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.rows li:last-child { border-bottom: 0; }
.rows small { display: block; font-size: .85rem; }
.checks { display: flex; flex-direction: column; gap: var(--s3); }
.checks li { display: flex; gap: var(--s3); align-items: flex-start; }
.checks li > .ic { margin-top: 2px; padding: 3px; border-radius: 50%; width: 1.5em; height: 1.5em; stroke-width: 2.4; }
.checks li.ok > .ic { background: var(--ok-soft); color: var(--ok); }
.checks li.open > .ic { background: var(--info-soft); color: var(--info); }
.checks small { display: block; font-size: .85rem; }

/* ---------- Themen ---------- */
.group { display: flex; flex-direction: column; gap: var(--s3); }
.group > h2 { display: flex; align-items: center; gap: var(--s3); font-size: 1.1rem; }
.gnum { width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); display: grid; place-items: center; font-size: .95rem; flex: none; }
.topic { text-decoration: none; color: inherit; transition: border-color var(--t), transform var(--t); }
.topic:hover { border-color: var(--primary); color: inherit; transform: translateY(-1px); }
.topic-top { display: flex; gap: var(--s2); align-items: center; flex-wrap: wrap; }
.part { font-size: 1.1rem; font-weight: 600; color: var(--accent); margin-right: auto; }
.topic h3 { margin: 0; font-size: 1.2rem; }
.topic .muted { font-size: .92rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.topic-foot { display: flex; justify-content: space-between; align-items: center; gap: var(--s2); flex-wrap: wrap; font-size: .85rem; color: var(--ink-2); }
.bul { display: flex; flex-direction: column; gap: var(--s2); }
.bul li { position: relative; padding-left: 1.2em; }
.bul li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; background: var(--accent); border-radius: 1px; transform: rotate(45deg); }
.terms { display: grid; grid-template-columns: minmax(140px, 220px) 1fr; gap: var(--s3) var(--s5); }
.terms dt { font-weight: 600; }
.terms dd { color: var(--ink-2); padding-bottom: var(--s3); border-bottom: 1px solid var(--line); }
.subs li > span { flex: 1 1 260px; min-width: 0; }
.deck { display: flex; flex-direction: column; gap: var(--s3); flex: 1; }
.flash { flex: 1; min-height: 190px; border: 1px solid var(--line-strong); border-radius: var(--r-m); background: var(--surface-2); padding: var(--s5); display: flex; flex-direction: column; gap: var(--s2); align-items: center; justify-content: center; text-align: center; }
.flash.flipped { background: var(--primary-soft); border-color: var(--primary); }
.flash-side { font-size: .72rem; letter-spacing: .09em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.flash-text { font-family: var(--display); font-size: 1.3rem; line-height: 1.3; font-weight: 600; }
.flash.flipped .flash-text { font: 400 1rem/1.5 var(--font); }
.flash-hint { font-size: .78rem; color: var(--ink-2); }
.deck-nav { display: flex; align-items: center; justify-content: center; gap: var(--s4); }

/* ---------- Lernmodus ---------- */
.modes { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: var(--s3); }
.mode { text-align: left; display: grid; grid-template-columns: 1fr auto; gap: 2px var(--s3); padding: var(--s3) var(--s4); border: 1px solid var(--line-strong); border-radius: var(--r-m); background: var(--surface); min-height: 68px; transition: border-color var(--t), background var(--t); }
.mode .muted { grid-column: 1; font-size: .82rem; line-height: 1.35; }
.mode .num { grid-row: 1 / span 2; grid-column: 2; align-self: center; font-family: var(--display); font-size: 1.2rem; color: var(--ink-2); }
.mode:hover { border-color: var(--primary); }
.mode[aria-checked="true"] { background: var(--primary-soft); border-color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
.tags { display: flex; flex-wrap: wrap; gap: var(--s2); margin-bottom: var(--s3); }
.tag { min-height: 38px; padding: 0 var(--s3); border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); font-size: .88rem; transition: background var(--t), border-color var(--t); }
.tag:hover { border-color: var(--primary); }
.tag[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); font-weight: 600; }
.tag[aria-pressed="true"]::before { content: "✓ "; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: var(--r-m); overflow: hidden; align-self: flex-start; }
.seg button { min-height: 42px; min-width: 64px; padding: 0 var(--s4); border: 0; border-right: 1px solid var(--line-strong); background: var(--surface); font-weight: 600; font-size: .92rem; }
.seg button:last-child { border-right: 0; }
.seg button[aria-checked="true"] { background: var(--primary); color: var(--primary-ink); }

.runhead { display: flex; align-items: center; gap: var(--s4); }
.runprog { flex: 1; display: flex; flex-direction: column; gap: 6px; font-size: .88rem; color: var(--ink-2); min-width: 0; }
.runscore { display: inline-flex; align-items: center; gap: 4px; font-weight: 600; }
.qcard { gap: var(--s4); position: relative; }
.qmeta { display: flex; flex-wrap: wrap; gap: 6px; padding-right: 90px; }
.qtools { position: absolute; top: var(--s4); right: var(--s4); }
.qtext { font-family: var(--font); font-size: 1.22rem; line-height: 1.45; font-weight: 600; text-wrap: pretty; }
.qlabel { font-size: .78rem; color: var(--ink-2); border-top: 1px dashed var(--line); padding-top: var(--s3); }
.opts { display: flex; flex-direction: column; gap: var(--s3); }
.opt { display: flex; gap: var(--s3); align-items: flex-start; text-align: left; width: 100%; padding: var(--s3) var(--s4); border: 1.5px solid var(--line-strong); border-radius: var(--r-m); background: var(--surface); min-height: 56px; transition: border-color var(--t), background var(--t); }
.opt:not([disabled]):hover { border-color: var(--primary); background: var(--surface-2); }
.opt[disabled] { cursor: default; color: var(--ink); }
.opt-key { width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--line-strong); display: grid; place-items: center; font-weight: 700; font-size: .85rem; flex: none; background: var(--surface); }
[role="checkbox"] .opt-key { border-radius: 7px; }
.opt-body { display: flex; flex-direction: column; gap: 4px; padding-top: 3px; min-width: 0; }
.opt.sel { border-color: var(--primary); background: var(--primary-soft); }
.opt.sel .opt-key { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.opt.ok { border-color: var(--ok); background: var(--ok-soft); }
.opt.ok .opt-key { background: var(--ok); border-color: var(--ok); color: var(--surface); }
.opt.miss { border-color: var(--ok); border-style: dashed; }
.opt.miss .opt-key { border-color: var(--ok); color: var(--ok); }
.opt.bad { border-color: var(--bad); background: var(--bad-soft); }
.opt.bad .opt-key { background: var(--bad); border-color: var(--bad); color: var(--surface); }
.opt.off { opacity: .85; }
.opt-mark { display: inline-flex; align-items: center; gap: 5px; font-size: .8rem; font-weight: 700; }
.opt-mark em { font-style: normal; }
.opt-mark .ic { stroke-width: 2.6; width: 1.1em; height: 1.1em; }
.ok .opt-mark, .miss .opt-mark { color: var(--ok); } .bad .opt-mark { color: var(--bad); } .off .opt-mark { color: var(--ink-2); }
.opt-why { font-size: .9rem; color: var(--ink-2); }
.verdict { display: flex; gap: var(--s3); padding: var(--s4); border-radius: var(--r-m); border-left: 4px solid; }
.verdict.ok { background: var(--ok-soft); border-color: var(--ok); } .verdict.bad { background: var(--bad-soft); border-color: var(--bad); }
.verdict > .ic { width: 1.6em; height: 1.6em; stroke-width: 2.4; }
.verdict.ok > .ic { color: var(--ok); } .verdict.bad > .ic { color: var(--bad); }
.verdict p { margin-top: 4px; }
.qsrc { font-size: .86rem; padding: var(--s3) var(--s4); background: var(--surface-2); border-radius: var(--r-m); }
.cause { border-top: 1px solid var(--line); padding-top: var(--s3); display: flex; flex-direction: column; gap: var(--s2); }
.cause .tags { margin: 0; }
.runfoot { display: flex; justify-content: space-between; align-items: center; gap: var(--s3); flex-wrap: wrap; }
.ttsbar { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; padding: 6px var(--s3); background: var(--surface-2); border-radius: var(--r-m); color: var(--ink-2); }
.ttsbar .sep { width: 1px; height: 20px; background: var(--line-strong); margin: 0 4px; }
.match { display: flex; flex-direction: column; gap: var(--s3); }
.match-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: var(--s2) var(--s4); align-items: center; padding: var(--s3); border: 1px solid var(--line); border-radius: var(--r-m); }
.match-row label { font-weight: 600; }
.match-row .opt-mark { grid-column: 1 / -1; }
.match-row.ok { border-color: var(--ok); background: var(--ok-soft); } .match-row.bad { border-color: var(--bad); background: var(--bad-soft); }
.match-row.ok .opt-mark { color: var(--ok); } .match-row.bad .opt-mark { color: var(--bad); }
.solution { background: var(--primary-soft); border-radius: var(--r-m); padding: var(--s4); display: flex; flex-direction: column; gap: var(--s2); }
.card.solution { border-color: transparent; }
.selfrate { display: flex; flex-direction: column; gap: var(--s2); }
.rec { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s3); }
.rec audio { height: 40px; max-width: 100%; }
.rec-live { display: inline-flex; align-items: center; gap: var(--s2); font-weight: 600; color: var(--bad); }
.rec-live .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--bad); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: .3; } }

/* ---------- Gesetze einfach erklärt (eingeklappt, erst auf Antippen sichtbar) ---------- */
.laws { display: flex; flex-direction: column; gap: var(--s2); }
.lawgroup > summary { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); flex-wrap: wrap; cursor: pointer; list-style: none; min-height: 44px; }
.lawgroup > summary::-webkit-details-marker { display: none; }
.lawgroup > summary h3 { margin: 0; display: flex; align-items: center; gap: var(--s2); }
.lawgroup > summary h3 .ic { color: var(--accent); }
.lawgroup > summary .muted { font-size: .85rem; }
.lawgroup[open] > summary { margin-bottom: var(--s3); }
.law { border: 1px solid var(--line); border-radius: var(--r-m); background: var(--surface); }
.law > summary { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 6px var(--s3); cursor: pointer; list-style: none; font-size: .92rem; }
.law summary::-webkit-details-marker { display: none; }
.law > summary .ic { color: var(--accent); }
.law-k { font-weight: 600; white-space: nowrap; }
.law-t { color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.law[open] { border-color: var(--accent); }
.law-body { padding: 0 var(--s3) var(--s3); display: flex; flex-direction: column; gap: var(--s2); }
.law-e { background: var(--accent-soft); border-radius: var(--r-s); padding: 10px var(--s3); }
.law-w > summary { cursor: pointer; font-size: .85rem; color: var(--primary); font-weight: 600; min-height: 36px; display: flex; align-items: center; list-style: none; }
.law-w > summary::before { content: "+ "; white-space: pre; }
.law-w[open] > summary::before { content: "– "; }
.law-w blockquote { margin: 0; padding-left: var(--s3); border-left: 3px solid var(--line-strong); font-size: .9rem; color: var(--ink-2); overflow-wrap: anywhere; }
.law-src { font-size: .8rem; color: var(--ink-2); margin-top: var(--s2); }

/* ---------- Formulare ---------- */
.field { display: flex; flex-direction: column; gap: 6px; font-size: .88rem; }
.field > span:first-child { font-weight: 600; color: var(--ink-2); }
input[type="text"], input[type="search"], input[type="number"], select, textarea { min-height: 44px; padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: var(--r-m); background: var(--surface); font-size: 1rem; width: 100%; }
textarea { resize: vertical; line-height: 1.5; }
input[type="range"] { width: 100%; accent-color: var(--primary); min-height: 44px; }
.filters { flex-direction: row; flex-wrap: wrap; align-items: flex-end; gap: var(--s4); }
.filters .field { flex: 1 1 170px; }
.filters .grow { flex: 2 1 260px; }
.searchbox { position: relative; display: block; }
.searchbox .ic { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--ink-2); }
.searchbox input { padding-left: 40px; }
.switch { display: flex; gap: var(--s3); align-items: flex-start; padding: var(--s3) 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 46px; height: 26px; margin: 0; cursor: pointer; }
.sw-ui { width: 46px; height: 26px; border-radius: 999px; background: var(--line-strong); position: relative; flex: none; transition: background var(--t); }
.sw-ui::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--surface); transition: transform var(--t); }
.switch input:checked + .sw-ui { background: var(--ok); }
.switch input:checked + .sw-ui::after { transform: translateX(20px); }
.switch input:focus-visible + .sw-ui { outline: 3px solid var(--signal); outline-offset: 2px; }
.switch.is-off { opacity: .55; cursor: not-allowed; }
.sw-l small { display: block; color: var(--ink-2); font-size: .85rem; }
.voice { margin-top: var(--s3); gap: var(--s4); }
.check { display: flex; gap: var(--s3); align-items: flex-start; padding: var(--s3); border: 1px solid var(--line); border-radius: var(--r-m); cursor: pointer; min-height: 48px; }
.check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--ok); flex: none; }
.check:has(input:checked) { background: var(--ok-soft); border-color: var(--ok); }
.checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s2); }

/* ---------- Katalog ---------- */
.qlist li { padding: 0; }
.qrow { display: flex; flex-direction: column; gap: var(--s2); width: 100%; text-align: left; background: none; border: 0; padding: var(--s3) var(--s2); border-radius: var(--r-s); text-decoration: none; color: inherit; }
.qrow:hover { background: var(--surface-2); color: inherit; }
.qrow-t { font-weight: 600; }
.qrow-m { display: flex; flex-wrap: wrap; gap: 6px; }
.pager { display: flex; justify-content: center; align-items: center; gap: var(--s4); padding-top: var(--s3); }

/* ---------- Prüfung ---------- */
.exbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: var(--s4); background: var(--rail); color: #fff; padding: var(--s3) var(--s4); border-radius: var(--r-m); box-shadow: var(--shadow); }
.exbar-l { flex: 1; display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.exbar .muted { color: var(--rail-ink); font-size: .82rem; }
.extime { display: inline-flex; align-items: center; gap: var(--s2); font-family: var(--display); font-size: 1.5rem; font-weight: 600; }
.extime.low { color: var(--signal); }
.exbar .btn-primary { background: var(--signal); border-color: var(--signal); color: #1b1300; }
.exgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 6px; }
.exgrid button { height: 44px; border: 1px solid var(--line-strong); border-radius: var(--r-s); background: var(--surface); font-weight: 600; font-variant-numeric: tabular-nums; position: relative; }
.exgrid .done { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.exgrid .flag::after, .lg.flag::after { content: ""; position: absolute; top: 3px; right: 3px; width: 8px; height: 8px; border-radius: 50%; background: var(--signal); }
.exgrid [aria-current] { outline: 3px solid var(--signal); outline-offset: 1px; }
.legend { display: flex; gap: var(--s4); flex-wrap: wrap; font-size: .82rem; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.lg { width: 16px; height: 16px; border: 1px solid var(--line-strong); border-radius: 4px; display: inline-block; position: relative; }
.lg.done { background: var(--primary); border-color: var(--primary); }
.result { flex-direction: row; align-items: center; gap: var(--s6); flex-wrap: wrap; border-top: 4px solid var(--ok); }
.result.bad { border-top-color: var(--bad); }
.result.bad .ring-fg { stroke: var(--bad); } .result.ok .ring-fg { stroke: var(--ok); }
.result > div:last-child { display: flex; flex-direction: column; gap: var(--s3); flex: 1 1 260px; }
.wrongq { border: 1px solid var(--line); border-radius: var(--r-m); padding: var(--s3) var(--s4); }
.wrongq summary { display: flex; justify-content: space-between; gap: var(--s3); align-items: flex-start; cursor: pointer; font-weight: 600; }
.wrongq[open] summary { margin-bottom: var(--s3); }
.wrongq .opts { margin-bottom: var(--s3); }
body.exam .rail, body.exam .tabbar { display: none; }
body.exam .app { grid-template-columns: minmax(0, 1fr); }

/* ---------- Mündlich, Quellen ---------- */
.schema { counter-reset: s; display: flex; flex-direction: column; gap: var(--s2); }
.schema li { counter-increment: s; display: flex; gap: var(--s3); align-items: flex-start; }
.schema li::before { content: counter(s); width: 26px; height: 26px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); display: grid; place-items: center; font: 600 .82rem var(--display); flex: none; margin-top: 1px; }
.case-text { font-size: 1.05rem; line-height: 1.6; }
.facts { display: flex; flex-direction: column; }
.fact { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--s4); padding: var(--s3) 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.fact:last-child { border-bottom: 0; }
.fact > div { flex: 1 1 320px; min-width: 0; }
.fact p { margin: 2px 0; }
.srcs { display: flex; flex-direction: column; gap: var(--s4); }
.srcs li { border: 1px solid var(--line); border-radius: var(--r-m); padding: var(--s4); display: flex; flex-direction: column; gap: var(--s3); }
.src-top { display: flex; justify-content: space-between; gap: var(--s3); align-items: flex-start; flex-wrap: wrap; }

#toast { position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 999px; font-size: .92rem; font-weight: 600; opacity: 0; pointer-events: none; transition: opacity var(--t), transform var(--t); z-index: 60; max-width: calc(100vw - 32px); text-align: center; }
#toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Responsiv ---------- */
@media (max-width: 1100px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  .rail { display: none; }
  #main { padding: var(--s5) var(--s4) 104px; gap: var(--s4); }
  #banner { padding: 0 var(--s4); }
  .tabbar { display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; left: 0; right: 0; bottom: 0; background: var(--surface); border-top: 1px solid var(--line); box-shadow: var(--shadow-up); z-index: 40; padding-bottom: env(safe-area-inset-bottom); }
  .tabbar a, .tabbar button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 60px; border: 0; background: none; color: var(--ink-2); font-size: .72rem; font-weight: 600; text-decoration: none; border-top: 3px solid transparent; }
  .tabbar .ic { width: 22px; height: 22px; }
  .tabbar [aria-current] { color: var(--primary); border-top-color: var(--signal); }
  #sheet:not([hidden]) { display: block; position: fixed; inset: 0; background: rgba(10, 18, 24, .5); z-index: 50; }
  .sheet-in { position: absolute; left: 0; right: 0; bottom: 0; background: var(--surface); border-radius: var(--r-l) var(--r-l) 0 0; padding: var(--s4) var(--s4) calc(var(--s5) + env(safe-area-inset-bottom)); }
  .sheet-in h2 { font-size: 1rem; margin-bottom: var(--s3); }
  #sheet-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s2); }
  #sheet-list a { display: flex; align-items: center; gap: var(--s3); min-height: 52px; padding: 0 var(--s3); border: 1px solid var(--line); border-radius: var(--r-m); text-decoration: none; color: var(--ink); font-weight: 600; }
  #sheet-list a[aria-current] { border-color: var(--primary); background: var(--primary-soft); }
  body.focus .tabbar { display: none; }
  body.focus #main { padding-bottom: var(--s6); }
  #toast { bottom: 76px; }
  .qmeta { padding-right: 0; }
  .qtools { position: static; align-self: flex-start; margin: -4px 0 -8px -10px; }
  .match-row { grid-template-columns: 1fr; }
  .exbar { border-radius: 0; margin: calc(var(--s5) * -1) calc(var(--s4) * -1) 0; padding: var(--s2) var(--s4); gap: var(--s3); }
  .extime { font-size: 1.25rem; }
  .exbar-l b { font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
}
/* Touch-Geräte: größere Tippflächen, gut lesbare Kleinschrift */
@media (pointer: coarse), (max-width: 900px) {
  html { -webkit-tap-highlight-color: transparent; }
  button, a, select, input, label { touch-action: manipulation; }
  .btn-sm, .iconbtn { min-height: 44px; }
  .tag { min-height: 44px; padding: 0 var(--s4); }
  .linkbtn { display: inline-block; padding: 12px 0; }
  .chip, .eyebrow, .qlabel, .flash-hint, .flash-side { font-size: .82rem; }
  .exgrid { grid-template-columns: repeat(auto-fill, minmax(48px, 1fr)); }
  .exgrid button { height: 48px; }
  .deck-nav .btn { min-width: 56px; }
  /* Hauptaktion bleibt beim Lernen und in der Prüfung am unteren Rand erreichbar */
  body.focus .runfoot { position: sticky; bottom: 0; z-index: 15; background: var(--bg); margin: 0 calc(var(--s4) * -1); padding: var(--s3) var(--s4) calc(var(--s3) + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
  body.exam .runfoot { display: grid; grid-template-columns: 1fr 1fr 1fr; }
  body.exam .runfoot .btn { padding: 0 var(--s2); min-height: 48px; }
}
@media (max-width: 640px) {
  .g2, .g3 { grid-template-columns: minmax(0, 1fr); }
  .card { padding: var(--s4); }
  .hero { flex-direction: column; align-items: flex-start; padding: var(--s5); gap: var(--s4); }
  .hero .ring { width: 108px; height: 108px; }
  .terms { grid-template-columns: 1fr; gap: 2px; }
  .terms dd { margin-bottom: var(--s3); }
  .checklist { grid-template-columns: 1fr; }
  .runfoot .btn-lg { flex: 1 1 100%; order: -1; }
  .actions .btn-lg { flex: 1 1 100%; }
  .lamps { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-v { font-size: 1.5rem; }
  .qtext { font-size: 1.1rem; }
  .kv { grid-template-columns: 1fr; gap: 0; }
  .kv dt { font-size: .8rem; margin-top: var(--s2); }
  .runhead { flex-wrap: wrap; }
  .runprog { order: 3; flex: 1 1 100%; }
  .runscore { margin-left: auto; }
  .seg button { min-width: 0; flex: 1; }
  .seg { align-self: stretch; }
  .modes { grid-template-columns: 1fr; }
  .next .btn { width: 100%; }
}
@media (orientation: landscape) and (max-height: 480px) and (max-width: 950px) {
  .tabbar a, .tabbar button { min-height: 46px; flex-direction: row; gap: 6px; }
  #main { padding-bottom: 76px; padding-top: var(--s4); }
  body.focus #main { padding-bottom: var(--s4); }
  .exbar { position: static; }
  body.focus .runfoot { padding-top: var(--s2); padding-bottom: calc(var(--s2) + env(safe-area-inset-bottom)); }
  .pagehead h1 { font-size: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
.no-anim *, .no-anim *::before, .no-anim *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
@media print { .rail, .tabbar, #toast { display: none; } .app { display: block; } }

.app-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}