/* 34a-lernmaterial.de – Stylesheet
   Layout-Idee: Prüfungsbogen trifft Dienstausweis – klare Raster, Signalfarbe Amber nur für Handlungen und Punkte.
   Schriften: Systemschriften (keine externen Server, datenschutzfreundlich). Überschriften in DIN-artiger Schmalschrift, wo vorhanden. */
:root {
  --ink: #1E2B38;        /* Nachtblau – Text, Kopf */
  --petrol: #2F6F73;     /* Petrol – Struktur, Links */
  --signal: #E8A317;     /* Amber – Handlungen, Punkte */
  --paper: #F5F7F6;      /* Seitengrund, leicht grünlich-grau */
  --surface: #FFFFFF;    /* Karten, Formulare */
  --line: #D5DCDD;       /* Linien */
  --muted: #56646E;      /* Nebentext */
  --petrol-soft: #E1EEEE;
  --signal-soft: #FBF0D6;
  --on-signal: #1E2B38;
  --ok: #2E7D4F; --bad: #B03A2E;
  --foot-bg: #1E2B38; --foot-fg: #F5F7F6;
  --font-display: "Bahnschrift SemiCondensed", "Bahnschrift", "DIN Condensed", "DIN Alternate", "Roboto Condensed", "Arial Narrow", sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --step--1: 0.875rem; --step-0: 1.0625rem; --step-1: 1.3rem; --step-2: 1.7rem; --step-3: 2.3rem; --step-4: clamp(2.3rem, 5.2vw, 3.6rem);
  --radius: 6px; --wrap: 72rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #E6ECEE; --petrol: #6BB9BD; --signal: #F2B940; --paper: #11181F; --surface: #19232D; --line: #2C3A46; --muted: #A3B1BA;
    --petrol-soft: #1C3135; --signal-soft: #3A3018; --on-signal: #11181F; --ok: #6CC08F; --bad: #E7837A; --foot-bg: #0B1116; --foot-fg: #E6ECEE; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ink: #E6ECEE; --petrol: #6BB9BD; --signal: #F2B940; --paper: #11181F; --surface: #19232D; --line: #2C3A46; --muted: #A3B1BA;
  --petrol-soft: #1C3135; --signal-soft: #3A3018; --on-signal: #11181F; --ok: #6CC08F; --bad: #E7837A; --foot-bg: #0B1116; --foot-fg: #E6ECEE; color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 var(--step-0)/1.6 var(--font-body); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--petrol); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--font-display); font-stretch: semi-condensed; line-height: 1.12; text-wrap: balance; margin: 0; letter-spacing: -0.005em; }
h1 { font-size: var(--step-4); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 4.2vw, 2.3rem); font-weight: 700; }
h3 { font-size: var(--step-1); font-weight: 700; }
p { margin: 0; }
h1, h2, h3, p, li, td, dd { overflow-wrap: break-word; hyphens: auto; }
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 1.25rem; }
.prose { max-width: 40rem; display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr); }
.prose ul, .prose ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.4rem; }
.eyebrow { font-size: var(--step--1); font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--petrol); }
.lead { font-size: var(--step-1); line-height: 1.5; color: var(--muted); max-width: 40rem; }
.muted { color: var(--muted); }
.small { font-size: var(--step--1); }
.tnum { font-variant-numeric: tabular-nums; }
.skip { position: absolute; left: -999px; top: 0; background: var(--signal); color: var(--on-signal); padding: 0.5rem 1rem; z-index: 99; }
.skip:focus { left: 1rem; }

/* Kopf */
.site-head { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.brand-mark { width: 2.2rem; height: 2.2rem; border-radius: var(--radius); background: var(--ink); color: var(--signal); display: grid; place-items: center; font: 700 1.35rem/1 var(--font-display); }
:root[data-theme="dark"] .brand-mark { background: var(--signal); color: var(--on-signal); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .brand-mark { background: var(--signal); color: var(--on-signal); } }
.brand-name { font: 700 1.15rem/1.1 var(--font-display); font-stretch: semi-condensed; }
.brand-name small { display: block; font: 400 0.75rem/1.2 var(--font-body); color: var(--muted); }
.nav { display: flex; gap: 0.25rem; align-items: center; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--ink); padding: 0.5rem 0.7rem; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; }
.nav a:hover { background: var(--petrol-soft); }
.nav a[aria-current="page"] { color: var(--petrol); box-shadow: inset 0 -3px 0 var(--signal); border-radius: 0; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: var(--radius); padding: 0.45rem 0.7rem; font: 600 0.95rem var(--font-body); cursor: pointer; }
@media (max-width: 56rem) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--surface); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; padding: 0.5rem 1.25rem 1rem; }
  .nav.open { display: flex; }
  .nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--signal); }
}

/* Schaltflächen */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.75rem 1.15rem; border-radius: var(--radius); font: 700 1rem/1.2 var(--font-body); text-decoration: none; border: 2px solid transparent; cursor: pointer; }
.btn-primary { background: var(--signal); color: var(--on-signal); }
.btn-primary:hover { filter: brightness(1.06); color: var(--on-signal); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Abschnitte */
.section { padding-block: clamp(3rem, 7vw, 5rem); }
.section-alt { background: var(--surface); border-block: 1px solid var(--line); }
.section-head { display: grid; gap: 0.6rem; margin-bottom: 2rem; max-width: 46rem; }
.grid { display: grid; gap: 1.25rem; }
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr)); }
.cols-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }
.grid > * { min-width: 0; }

/* Hero */
.hero { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.hero .wrap { display: grid; gap: 2.5rem; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: center; }
@media (max-width: 56rem) { .hero .wrap { grid-template-columns: 1fr; } }
.hero-text { display: grid; gap: 1.25rem; }
.hero h1 .hl { color: var(--petrol); }
.facts { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin: 0; padding: 0; list-style: none; font-size: var(--step--1); color: var(--muted); }
.facts li::before { content: "§"; color: var(--signal); font-weight: 700; margin-right: 0.35rem; }

/* Aufgabenkarte (Prüfungsbogen) */
.sheet { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 1px 0 var(--line), 0 18px 40px -24px rgba(16, 30, 40, 0.45); overflow: hidden; }
.sheet-head { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; padding: 0.7rem 1.1rem; background: var(--ink); color: var(--paper); font-size: var(--step--1); }
.sheet-head b { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.02em; }
.sheet-body { padding: 1.1rem; display: grid; gap: 0.8rem; }
.q-text { font-weight: 700; }
.q-meta { font-size: var(--step--1); color: var(--petrol); font-weight: 600; }
.opts { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.opt { display: grid; grid-template-columns: auto auto 1fr; gap: 0.55rem; align-items: start; padding: 0.45rem 0.55rem; border-radius: var(--radius); cursor: pointer; border: 1px solid transparent; }
.opt:hover { background: var(--petrol-soft); }
.opt input { width: 1.1rem; height: 1.1rem; margin: 0.2rem 0 0; accent-color: var(--petrol); }
.opt .letter { font-weight: 700; min-width: 1.2rem; }
.opt.is-right { border-color: var(--ok); }
.opt.is-wrong { border-color: var(--bad); }
.opt.is-missed { border-color: var(--ok); border-style: dashed; }
.feedback { border-left: 4px solid var(--petrol); background: var(--petrol-soft); padding: 0.7rem 0.9rem; border-radius: 0 var(--radius) var(--radius) 0; font-size: 0.97rem; }
.feedback b { font-variant-numeric: tabular-nums; }
.sheet-foot { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: space-between; }

/* Punkteverteilung */
.dist { display: grid; gap: 0.55rem; }
.dist-row { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr) 4.5rem; gap: 0.75rem; align-items: center; }
.dist-row .label { font-weight: 600; font-size: 0.95rem; }
.dist-bar { height: 0.95rem; background: var(--petrol-soft); border-radius: 3px; overflow: hidden; }
.dist-bar span { display: block; height: 100%; background: var(--petrol); }
.dist-row.top .dist-bar span { background: var(--signal); }
.dist-row .val { font-variant-numeric: tabular-nums; text-align: right; font-size: 0.95rem; color: var(--muted); }
@media (max-width: 40rem) { .dist-row { grid-template-columns: 1fr 4rem; } .dist-row .dist-bar { grid-column: 1 / -1; grid-row: 2; } }

/* Karten und Produkte */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; display: grid; gap: 0.75rem; align-content: start; }
.card h3 a { color: inherit; text-decoration: none; }
.audience { display: grid; gap: 0.9rem; padding: 1.5rem; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); border-top: 5px solid var(--petrol); }
.audience.alt { border-top-color: var(--signal); }
.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.checklist li { padding-left: 1.6rem; position: relative; }
.checklist li::before { content: ""; position: absolute; left: 0; top: 0.35em; width: 0.95rem; height: 0.95rem; border: 2px solid var(--petrol); border-radius: 2px; }
.checklist li::after { content: ""; position: absolute; left: 0.3rem; top: 0.42em; width: 0.35rem; height: 0.6rem; border: solid var(--petrol); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.product { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); display: grid; grid-template-rows: auto 1fr; overflow: hidden; }
.product-cover { background: var(--petrol-soft); padding: 1.25rem 1.25rem 0; display: flex; justify-content: center; align-items: flex-end; min-height: 12rem; }
.product-cover img { width: 9.5rem; box-shadow: 0 10px 24px -12px rgba(16, 30, 40, 0.55); border: 1px solid var(--line); background: #fff; }
.product-cover.duo img + img { margin-left: -3.5rem; transform: translateY(0.6rem); }
.product-body { padding: 1.15rem 1.25rem 1.3rem; display: grid; gap: 0.65rem; align-content: start; }
.price { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; }
.price b { font: 700 1.6rem/1 var(--font-display); font-variant-numeric: tabular-nums; }
.price s { color: var(--muted); font-size: 0.95rem; }
.tag { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.2rem 0.5rem; border-radius: 3px; background: var(--signal-soft); color: var(--ink); justify-self: start; }
.tag.free { background: var(--petrol-soft); color: var(--petrol); }
.product.featured { border: 2px solid var(--signal); }
.spec { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.3rem; font-size: 0.95rem; color: var(--muted); }
.spec li::before { content: "–"; margin-right: 0.45rem; color: var(--petrol); }
.series { display: grid; gap: 0.6rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15.5rem), 1fr)); }
.series-item { display: grid; grid-template-columns: 3.4rem minmax(0, 1fr); gap: 0.8rem; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.6rem; }
.series-item img { width: 3.4rem; border: 1px solid var(--line); background: #fff; }
.series-item b { display: block; line-height: 1.25; }
.series-item span { font-size: 0.85rem; color: var(--muted); }

/* Tabellen */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.97rem; }
th, td { text-align: left; padding: 0.65rem 0.85rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--ink); color: var(--paper); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* Hinweisboxen */
.note { border-left: 4px solid var(--signal); background: var(--signal-soft); padding: 0.9rem 1.1rem; border-radius: 0 var(--radius) var(--radius) 0; }
.note.info { border-left-color: var(--petrol); background: var(--petrol-soft); }
.draft { border: 2px dashed var(--bad); color: var(--ink); padding: 0.9rem 1.1rem; border-radius: var(--radius); background: var(--surface); }

/* Folien-Galerie */
.gallery { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr)); }
.gallery figure { margin: 0; display: grid; gap: 0.45rem; }
.gallery img { border: 1px solid var(--line); border-radius: 4px; aspect-ratio: 16 / 9; object-fit: cover; width: 100%; max-width: 100%; }
.gallery figcaption { font-size: 0.88rem; color: var(--muted); }

/* Person */
.person { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 2rem; align-items: start; }
.person img { border-radius: var(--radius); border: 1px solid var(--line); width: 100%; aspect-ratio: 4 / 5; object-fit: cover; background: var(--petrol-soft); }
@media (max-width: 40rem) { .person { grid-template-columns: 1fr; } .person img { max-width: 14rem; } }
.idcard { display: grid; gap: 0.3rem; font-size: 0.95rem; }
.idcard div { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 0.5rem; border-bottom: 1px dashed var(--line); padding-block: 0.35rem; }
.idcard dt { color: var(--muted); }
.idcard dd { margin: 0; font-weight: 600; }

/* FAQ */
.faq { display: grid; gap: 0.6rem; max-width: 50rem; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.2rem 1.1rem; }
.faq summary { cursor: pointer; font-weight: 700; padding-block: 0.8rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--petrol); font: 700 1.3rem/1 var(--font-display); }
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding-bottom: 1rem; display: grid; gap: 0.6rem; color: var(--ink); }

/* Testfragen */
.tabs { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1.5rem; }
.tab { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: 0.45rem 0.85rem; font: 600 0.92rem var(--font-body); cursor: pointer; }
.tab[aria-selected="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.quiz { display: grid; gap: 1.25rem; }
.quiz-score { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; align-items: center; padding: 0.8rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.quiz-score b { font-variant-numeric: tabular-nums; }

/* Fuß */
.site-foot { background: var(--foot-bg); color: var(--foot-fg); padding-block: 3rem 2rem; margin-top: 0; }
.site-foot a { color: var(--foot-fg); }
.site-foot .grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }
.site-foot h2 { font-size: 1.05rem; color: var(--signal); margin-bottom: 0.6rem; }
.site-foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.35rem; }
.site-foot .legal { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid rgba(255, 255, 255, 0.18); font-size: 0.85rem; opacity: 0.85; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; }

/* Shop-Hinweis */
.toast { position: fixed; left: 50%; bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); width: min(30rem, calc(100% - 2rem)); background: var(--ink); color: var(--paper); padding: 0.9rem 1.1rem; border-radius: var(--radius); box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.5); z-index: 50; }
.toast a { color: var(--signal); }