/* LearnThisNext: Raster wie in einer Tabelle, Tinte auf Papier, Textmarker-Gelb nur für die aktive Zelle und "was als Nächstes". */
:root {
  --paper: #fbfcfd;
  --sheet: #ffffff;
  --ink: #1d2b4f;
  --ink-soft: #4a5672;
  --grid: #d6dde8;
  --head: #eef2f7;
  --marker: #ffcf33;
  --marker-soft: #fff4c7;
  --ok: #1e7f4a;
  --ok-soft: #e3f4ea;
  --bad: #b3261e;
  --bad-soft: #fbe7e5;
  --focus: #2563eb;
  /* Akzent je Fach (body.subject-…); ohne Fach ein Tintenblau. Excel: eigenes Grün, bewusst nicht das Microsoft-Grün */
  --accent: #2b4c9b;
  --accent-ink: #1f3a7a;
  --accent-soft: #e8eefb;
  --accent-line: #c9d6f3;
  --on-accent: #ffffff;
  --radius: 6px;
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --cell-font: "Aptos", "Calibri", "Segoe UI", system-ui, sans-serif;
  --measure: 68ch;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1626;
    --sheet: #151e33;
    --ink: #e7ecf5;
    --ink-soft: #a8b3c9;
    --grid: #2c3a57;
    --head: #1c2741;
    --marker: #ffcf33;
    --marker-soft: #3d3412;
    --ok: #5fd08f;
    --ok-soft: #12321f;
    --bad: #ff8a80;
    --bad-soft: #3a1714;
    --focus: #7aa7ff;
    --accent: #8fb0ff;
    --accent-ink: #b9ccff;
    --accent-soft: #1a2647;
    --accent-line: #2d3f6e;
    --on-accent: #0f1626;
    color-scheme: dark;
  }
}
body.subject-excel {
  --accent: #15803d;
  --accent-ink: #0f5f2d;
  --accent-soft: #e7f5ec;
  --accent-line: #bfe3cc;
}
@media (prefers-color-scheme: dark) {
  body.subject-excel {
    --accent: #4ade80;
    --accent-ink: #86efac;
    --accent-soft: #10291b;
    --accent-line: #1d4a30;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1.0625rem/1.6 var(--font); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.wrap { width: min(100% - 32px, 1120px); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; z-index: 10; background: var(--sheet); padding: 8px 12px; }
.small { font-size: .875rem; color: var(--ink-soft); }
.hp { position: absolute; left: -9999px; }

/* Kopf */
.site-header { border-bottom: 1px solid var(--grid); background: var(--sheet); }
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 1.125rem/1 var(--font-display); text-decoration: none; letter-spacing: -.01em; }
.brand-mark { width: 26px; height: 26px; color: var(--ink); }
.brand-cell { fill: var(--marker); }
.nav { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
.nav a { text-decoration: none; font-weight: 600; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a[aria-current] { border-bottom-color: var(--ink); }
.lang { margin-left: auto; display: flex; gap: 4px; }
.lang a { text-decoration: none; font-size: .8125rem; font-weight: 600; padding: 4px 8px; border: 1px solid var(--grid); border-radius: var(--radius); }
.lang a[aria-current] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Typografie */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.25rem); font-weight: 700; margin: 0 0 16px; max-width: 22ch; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); font-weight: 700; margin: 56px 0 12px; }
h3 { font-size: 1.25rem; margin: 32px 0 8px; }
.lead { font-size: 1.25rem; color: var(--ink-soft); max-width: 58ch; margin: 0; }
.prose > p, .prose > ul, .prose > ol, .prose > h2, .prose > h3, .prose > table, .prose > .note { max-width: var(--measure); }
.prose li + li { margin-top: 6px; }
code, .formula { font-family: var(--cell-font); background: var(--head); border: 1px solid var(--grid); border-radius: 4px; padding: 1px 6px; font-size: .95em; overflow-wrap: anywhere; }
.note { border-left: 4px solid var(--marker); background: var(--marker-soft); padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0; }

.page { padding-block: 32px 72px; }
.page-head { margin-bottom: 32px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 0 0 20px; font-size: .875rem; color: var(--ink-soft); }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--grid); }

/* Knöpfe */
[hidden] { display: none !important; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 20px; border: 2px solid var(--ink); border-radius: var(--radius);
  background: var(--ink); color: var(--paper); font: 600 1rem/1 var(--font); text-decoration: none; cursor: pointer; }
.btn:hover { background: transparent; color: var(--ink); }
.btn-quiet { background: transparent; color: var(--ink); }
.btn-quiet:hover { background: var(--head); }
.linkish { background: none; border: 0; padding: 0; color: inherit; font: inherit; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

/* Datentabellen im Text */
.prose table.data { border-collapse: collapse; width: 100%; font-size: .95rem; }
.prose table.data th, .prose table.data td { border: 1px solid var(--grid); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose table.data th { background: var(--head); }

/* Übung: Tabelle wie in der Tabellenkalkulation */
.exercise { margin: 32px 0; max-width: 760px; background: var(--sheet); border: 1px solid var(--grid); border-radius: var(--radius); padding: 20px; }
.exercise-task { margin: 0 0 16px; font-weight: 600; }
.exercise-label { display: inline-block; background: var(--ink); color: var(--paper); font-size: .8125rem; padding: 2px 8px; border-radius: 4px; margin-right: 6px; vertical-align: 1px; }
.formula-bar { display: grid; grid-template-columns: 64px 1fr; border: 1px solid var(--grid); border-bottom: 0; background: var(--sheet); }
.formula-bar output { display: flex; align-items: center; justify-content: center; border-right: 1px solid var(--grid); font: 600 .875rem var(--cell-font); background: var(--head); }
.formula-bar input { border: 0; padding: 10px 12px; font: 1rem var(--cell-font); background: var(--sheet); color: var(--ink); min-width: 0; }
.formula-bar input:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }
.sheet-scroll { overflow-x: auto; }
.sheet { border-collapse: collapse; font: .9375rem/1.3 var(--cell-font); min-width: 100%; background: var(--sheet); }
.sheet th { background: var(--head); color: var(--ink-soft); font-weight: 600; font-size: .8125rem; text-align: center; border: 1px solid var(--grid); padding: 4px 8px; min-width: 36px; }
.sheet td { border: 1px solid var(--grid); padding: 6px 10px; min-width: 88px; max-width: 200px; height: 34px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sheet td.num { text-align: right; font-variant-numeric: tabular-nums; }
.sheet td.target { background: var(--marker-soft); box-shadow: inset 0 0 0 2px var(--marker); }
.sheet td[tabindex] { cursor: cell; }
.sheet td.active { box-shadow: inset 0 0 0 2px var(--ink); }
.sheet td.target.active { box-shadow: inset 0 0 0 2px var(--ink), inset 0 0 0 4px var(--marker); }
.sheet td.ref-hl { background: color-mix(in srgb, var(--focus) 12%, transparent); }
.sheet td.result-ok { background: var(--ok-soft); box-shadow: inset 0 0 0 2px var(--ok); }
.exercise-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.exercise-actions .btn { min-height: 40px; padding: 0 16px; font-size: .9375rem; }
.exercise-actions select { min-height: 40px; padding: 0 8px; border: 1px solid var(--grid); border-radius: var(--radius); background: var(--sheet); color: var(--ink); font: .875rem var(--font); }
.feedback-box { margin-top: 16px; padding: 12px 16px; border-radius: var(--radius); border: 1px solid var(--grid); }
.feedback-box:empty { display: none; }
.feedback-box.ok { background: var(--ok-soft); border-color: var(--ok); }
.feedback-box.bad { background: var(--bad-soft); border-color: var(--bad); }
.feedback-box p { margin: 4px 0; }
.points { font-weight: 700; }
.keys { display: none; gap: 4px; flex-wrap: wrap; margin: 8px 0 0; }
.keys button { min-width: 40px; min-height: 40px; border: 1px solid var(--grid); background: var(--head); color: var(--ink); border-radius: 4px; font: 600 1rem var(--cell-font); }
@media (pointer: coarse) { .keys { display: flex; } }
@media (max-width: 600px) {
  .exercise { padding: 14px; margin-inline: -8px; }
  .sheet td { min-width: 64px; padding: 6px; }
  .sheet th { min-width: 28px; padding: 4px; }
}
.exercise-report { margin-top: 10px; font-size: .875rem; }

/* Startseite */
.hero { padding-block: 48px 40px; display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 960px) { .hero { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); padding-block: 72px 56px; } }
.hero .exercise { margin: 0; box-shadow: 0 1px 0 var(--grid), 12px 12px 0 var(--marker); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.steps { list-style: none; counter-reset: s; padding: 0; display: grid; gap: 16px; max-width: var(--measure); }
.steps li { counter-increment: s; display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 32px; height: 32px; border: 2px solid var(--ink); border-radius: 4px; font-weight: 700; }
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0; border-top: 1px solid var(--grid); border-left: 1px solid var(--grid); margin: 16px 0; max-width: 900px; }
.topics a { display: block; padding: 16px; border-right: 1px solid var(--grid); border-bottom: 1px solid var(--grid); text-decoration: none; background: var(--sheet); }
.topics a:hover { background: var(--marker-soft); }
.topics strong { display: block; font-family: var(--cell-font); }
.topics span { font-size: .875rem; color: var(--ink-soft); }
.next-card { border: 2px solid var(--ink); border-radius: var(--radius); padding: 20px; max-width: var(--measure); background: var(--marker-soft); }
.faq details { border-bottom: 1px solid var(--grid); padding: 12px 0; max-width: var(--measure); }
.faq summary { font-weight: 600; cursor: pointer; }

/* Konto */
.account-link { margin-left: auto; font-weight: 600; text-decoration: none; padding: 6px 12px; border: 2px solid var(--ink); border-radius: var(--radius); font-size: .9375rem; }
.account-link:hover { background: var(--ink); color: var(--paper); }
.account-link + .lang { margin-left: 0; }
.account-form { display: grid; gap: 14px; max-width: 420px; margin: 8px 0 24px; }
.account-form label { display: grid; gap: 4px; font-weight: 600; font-size: .9375rem; }
.account-form label.check { display: flex; align-items: flex-start; gap: 8px; font-weight: 400; }
.account-form input[type=email], .account-form input[type=password], .account-form input[type=text] { font: 1rem var(--font); padding: 10px; border: 1px solid var(--grid); border-radius: 4px; background: var(--sheet); color: var(--ink); }
.form-error { margin: 0; padding: 10px 14px; border: 1px solid var(--bad); background: var(--bad-soft); border-radius: var(--radius); }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 640px; border: 1px solid var(--grid); border-radius: var(--radius); background: var(--sheet); margin-bottom: 20px; }
.stats div { padding: 16px; display: grid; gap: 2px; }
.stats div + div { border-left: 1px solid var(--grid); }
.stats strong { font: 700 1.75rem/1.1 var(--font-display); font-variant-numeric: tabular-nums; }
.stats span { font-size: .875rem; color: var(--ink-soft); }
@media (max-width: 600px) { .header-inner { gap: 12px; } .nav { gap: 12px; } .account-link { padding: 4px 8px; } }

/* Fuß */
.site-footer { border-top: 1px solid var(--grid); background: var(--sheet); padding-block: 32px; font-size: .9375rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; padding: 0; margin: 12px 0; }
.footer-note { color: var(--ink-soft); font-size: .8125rem; }

/* Feedback-Dialog */
.feedback { border: 1px solid var(--grid); border-radius: var(--radius); padding: 0; width: min(100% - 32px, 520px); background: var(--sheet); color: var(--ink); }
.feedback::backdrop { background: rgb(15 22 38 / .55); }
.feedback-form { display: grid; gap: 12px; padding: 24px; }
.feedback-form h2 { margin: 0; font-size: 1.375rem; }
.feedback-form label { display: grid; gap: 4px; font-weight: 600; font-size: .9375rem; }
.feedback-form label.check { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.feedback-form input[type=email], .feedback-form select, .feedback-form textarea { font: 1rem var(--font); padding: 10px; border: 1px solid var(--grid); border-radius: 4px; background: var(--paper); color: var(--ink); }
.feedback-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.feedback-status:empty { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .sheet td.result-ok { animation: pop .35s ease-out; }
  @keyframes pop { from { background: var(--marker); } }
}

/* ---------- Farbe: Fach-Akzent, Rasterband, dunkler Fuß ---------- */
/* Raster wie Tabellenlinien als Hintergrund der Kopfbänder, in der Akzentfarbe */
.band {
  background-color: var(--accent-soft);
  background-image: linear-gradient(var(--accent-line) 1px, transparent 1px), linear-gradient(90deg, var(--accent-line) 1px, transparent 1px);
  background-size: 96px 32px;
  background-position: -1px -1px;
  border-bottom: 1px solid var(--accent-line);
}
.site-header { border-top: 4px solid var(--accent); }
.brand-mark { color: var(--accent-ink); }
.nav a[aria-current], .nav a:hover { border-bottom-color: var(--accent); color: var(--accent-ink); }
a { text-decoration-color: color-mix(in srgb, var(--accent) 60%, transparent); }
.prose a:not(.btn) { color: var(--accent-ink); }
.btn { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: var(--on-accent); }
.btn-quiet { background: var(--sheet); color: var(--accent-ink); border-color: var(--accent); }
.btn-quiet:hover { background: var(--accent-soft); color: var(--accent-ink); }
.account-link { border-color: var(--accent); color: var(--accent-ink); }
.account-link:hover { background: var(--accent); color: var(--on-accent); }
.lang a[aria-current] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
h2 { position: relative; }
.prose > h2::before { content: ""; display: block; width: 40px; height: 4px; background: var(--accent); border-radius: 2px; margin-bottom: 12px; }

/* Kopfband der Inhaltsseiten */
.page-band { padding-block: 32px 36px; }
.page-band .page-head { margin-bottom: 0; }
.page-band .crumbs ol { margin-bottom: 16px; }
.page-band .lead { color: var(--ink); opacity: .85; }
.page-band + .wrap.page, .page-band + .page { padding-top: 40px; }

/* Startseite: Held im Rasterband */
.hero-band { padding-block: 8px 0; }
.hero-band .hero { padding-block: 40px 48px; }
@media (min-width: 960px) { .hero-band .hero { padding-block: 64px 72px; } }
.hero .exercise { box-shadow: 10px 10px 0 var(--accent); border-color: var(--accent-line); }

/* Übung im Fach-Akzent: aktive Zelle grün umrandet wie in einer Tabellenkalkulation */
.exercise-label { background: var(--accent); color: var(--on-accent); }
.formula-bar output { background: var(--accent-soft); color: var(--accent-ink); }
.sheet thead th { background: var(--accent-soft); color: var(--accent-ink); border-color: var(--accent-line); }
.sheet td.active { box-shadow: inset 0 0 0 2px var(--accent); }
.sheet td.target.active { box-shadow: inset 0 0 0 2px var(--accent), inset 0 0 0 4px var(--marker); }

/* Themenkacheln mit Fachfarbe und fx-Marke */
.topics { border-color: var(--accent-line); }
.topics a { border-color: var(--accent-line); position: relative; padding-left: 52px; }
.topics a::before { content: "fx"; position: absolute; left: 14px; top: 16px; width: 26px; height: 26px; display: grid; place-items: center;
  font: italic 700 .8125rem/1 var(--cell-font); color: var(--on-accent); background: var(--accent); border-radius: 4px; }
.topics a:hover { background: var(--accent-soft); }
.topics strong { color: var(--accent-ink); }
.steps li::before { border-color: var(--accent); background: var(--accent); color: var(--on-accent); }

/* Fuß dunkel */
.site-footer { background: #16213d; color: #dfe6f3; border-top: 4px solid var(--accent); }
.site-footer a, .site-footer .linkish { color: #ffffff; }
.footer-note { color: #aab6cd; }

/* Lernpfad */
.path { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 20px; max-width: 900px; }
.path-level { border: 1px solid var(--accent-line); border-radius: var(--radius); background: var(--sheet); overflow: hidden; }
.path-level > header { display: flex; align-items: baseline; gap: 12px; padding: 14px 18px; background: var(--accent-soft); border-bottom: 1px solid var(--accent-line); }
.path-level > header h3 { margin: 0; font-size: 1.125rem; }
.path-level > header span { color: var(--ink-soft); font-size: .875rem; }
.path-level ol { list-style: none; margin: 0; padding: 0; }
.path-level li { display: grid; grid-template-columns: 32px 1fr auto; gap: 12px; align-items: center; padding: 12px 18px; border-top: 1px solid var(--grid); }
.path-level li:first-child { border-top: 0; }
.path-level li .dot { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--accent-line); display: grid; place-items: center; font-size: .75rem; color: var(--on-accent); }
.path-level li.done .dot { background: var(--accent); border-color: var(--accent); }
.path-level li.done .dot::after { content: "✓"; }
.path-level li .meta { font-size: .8125rem; color: var(--ink-soft); white-space: nowrap; }
.path-level li.soon { color: var(--ink-soft); }
.path-level li.soon .dot { border-style: dashed; }
.path-progress { height: 8px; border-radius: 4px; background: var(--accent-soft); overflow: hidden; max-width: 420px; margin: 8px 0 0; }
.path-progress span { display: block; height: 100%; background: var(--accent); width: 0; transition: width .4s; }

/* Funktionsübersetzer */
.fn-search { width: min(100%, 420px); font: 1rem var(--font); padding: 10px 12px; border: 2px solid var(--accent-line); border-radius: var(--radius); background: var(--sheet); color: var(--ink); margin: 8px 0 16px; }
.fn-table td:first-child, .fn-table td:nth-child(2) { font-family: var(--cell-font); font-weight: 600; }

/* Übungsarten: Ausfüllen, bedingte Formatierung, Sortieren/Filtern */
.sheet td.fill-range { background: color-mix(in srgb, var(--marker-soft) 55%, transparent); box-shadow: inset 0 0 0 1px var(--marker); }
.sheet td.cf-range { box-shadow: inset 0 0 0 1px var(--accent-line); }
.sheet td.cf-on { background: #fde2e1; color: #9b1c1c; }
@media (prefers-color-scheme: dark) { .sheet td.cf-on { background: #4a1d1b; color: #ffb4ab; } }
.sheet td.has-menu { position: relative; padding-right: 30px; overflow: visible; }
.sheet .col-menu { position: absolute; right: 3px; top: 50%; transform: translateY(-50%); width: 22px; height: 22px; padding: 0; border: 1px solid var(--grid);
  border-radius: 3px; background: var(--sheet); color: var(--ink); font-size: .75rem; line-height: 1; cursor: pointer; }
.sheet td.filtered .col-menu { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.col-popup { position: fixed; z-index: 20; min-width: 260px; max-width: calc(100vw - 16px); display: grid; gap: 6px; padding: 12px; background: var(--sheet); color: var(--ink);
  border: 1px solid var(--grid); border-radius: var(--radius); box-shadow: 0 8px 24px rgb(15 22 38 / .18); font: .875rem/1.4 var(--font); white-space: normal; text-align: left; }
.col-popup .linkish { text-align: left; text-decoration: none; padding: 4px 0; }
.col-popup .linkish:hover { color: var(--accent-ink); text-decoration: underline; }
.col-popup .popup-title { margin: 6px 0 0; font-weight: 700; border-top: 1px solid var(--grid); padding-top: 8px; }
.col-popup .popup-list { max-height: 180px; overflow: auto; display: grid; gap: 2px; }
.col-popup label.check { display: flex; gap: 6px; align-items: center; }
.col-popup .btn { min-height: 34px; justify-self: start; }

/* PivotTable-Übung */
.pivot-panel { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: end; margin-top: 14px; padding: 12px; border: 1px solid var(--accent-line); border-radius: var(--radius); background: var(--accent-soft); }
.pivot-panel .popup-title { flex-basis: 100%; margin: 0; border: 0; padding: 0; font-weight: 700; }
.pivot-panel label { display: grid; gap: 4px; font-size: .8125rem; font-weight: 600; }
.pivot-panel select { min-height: 36px; padding: 0 8px; border: 1px solid var(--grid); border-radius: 4px; background: var(--sheet); color: var(--ink); font: .875rem var(--font); }
.pivot-out { margin-top: 12px; overflow-x: auto; }
.pivot-table th, .pivot-table td { font-family: var(--cell-font); }
.prose .pivot-table td.num, .pivot-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.pivot-table .pivot-total th, .pivot-table .pivot-total td { font-weight: 700; border-top: 2px solid var(--accent); }

/* Zertifikat */
.certificate { max-width: 820px; margin: 0 auto; padding: 48px 56px; background: var(--sheet); border: 2px solid var(--accent); border-radius: var(--radius);
  box-shadow: 12px 12px 0 var(--accent-soft); text-align: center; }
.certificate h1 { max-width: none; margin: 4px 0 24px; font-size: clamp(2rem, 1.5rem + 2vw, 3rem); }
.cert-brand { margin: 0; font-weight: 700; color: var(--accent-ink); letter-spacing: .02em; }
.cert-name { font: 700 clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem)/1.2 var(--font-display); margin: 0 0 12px; border-bottom: 2px solid var(--accent-line); display: inline-block; padding: 0 24px 8px; }
.cert-text { max-width: 56ch; margin: 12px auto; }
.cert-score { font-weight: 700; color: var(--accent-ink); }
.certificate h2 { font-size: 1.125rem; margin: 28px 0 8px; }
.certificate h2::before { display: none; }
.cert-skills { text-align: left; columns: 2 280px; gap: 32px; padding-left: 20px; margin: 0 0 24px; font-size: .9375rem; }
.cert-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 40px; margin: 16px 0; }
.cert-meta dt { font-size: .8125rem; color: var(--ink-soft); }
.cert-meta dd { margin: 0; font-weight: 600; }
.cert-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 20px; }
@media (max-width: 600px) { .certificate { padding: 28px 18px; } }
@media print {
  .site-header, .site-footer, .cert-actions, .skip, .feedback { display: none !important; }
  body { background: #fff; }
  .certificate { box-shadow: none; border-width: 3px; padding: 32px 44px; break-inside: avoid; }
  /* eine A4-Seite: Seitenrand statt Seitenabstände der Website */
  @page { size: A4; margin: 12mm; }
  body.certificate-page main, body.certificate-page .wrap.page { margin: 0; padding: 0; }
  .certificate h1 { margin: 2px 0 14px; }
  .certificate h2 { margin-top: 18px; }
}

/* Abschlusstest */
.finaltest { max-width: 820px; margin: 24px 0; padding: 20px; border: 2px solid var(--accent-line); border-radius: var(--radius); background: var(--sheet); }
.finaltest .exam-bar { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 10px 14px; margin-bottom: 12px; border-radius: var(--radius); background: var(--accent-soft); font-weight: 700; }
.finaltest .exam-time.low { color: var(--bad); }
.finaltest .exercise { margin: 0; }
.finaltest form { display: grid; gap: 12px; max-width: 420px; }
.finaltest label { display: grid; gap: 4px; font-weight: 600; }
.finaltest input[type=text] { font: 1rem var(--font); padding: 10px; border: 1px solid var(--grid); border-radius: 4px; background: var(--paper); color: var(--ink); }

/* Datenüberprüfung, Diagramm, Tastenkombinationen */
:root { --chart-1: #15803d; --chart-2: #2b4c9b; --chart-3: #c2410c; --chart-4: #7c3aed; --chart-5: #0e7490; --chart-6: #be185d; }
@media (prefers-color-scheme: dark) { :root { --chart-1: #4ade80; --chart-2: #8fb0ff; --chart-3: #fdba74; --chart-4: #c4b5fd; --chart-5: #67e8f9; --chart-6: #f9a8d4; } }
.pivot-panel input[type="text"] { min-height: 36px; padding: 0 8px; border: 1px solid var(--grid); border-radius: 4px; background: var(--sheet); color: var(--ink); font: .875rem var(--cell-font); min-width: 9rem; }
.chart-series { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0; padding: 0; border: 0; font-size: .875rem; }
.chart-series legend { padding: 0; margin-bottom: 4px; font-size: .8125rem; font-weight: 600; }
.chart-series label.check { display: flex; gap: 6px; align-items: center; font-weight: 400; }
.chart-out { margin-top: 12px; max-width: 640px; color: var(--ink); }
.chart-out svg { display: block; width: 100%; height: auto; font-family: var(--font); }
.sheet td .cell-dropdown { width: 100%; min-height: 28px; border: 1px solid var(--accent-line); border-radius: 3px; background: var(--sheet); color: var(--ink); font: inherit; }
.keys-pad { outline: none; border-radius: 4px; }
.keys-pad:focus-visible { box-shadow: 0 0 0 3px var(--focus); }
.sheet td.sel { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.keys-bar { justify-content: space-between; }
.keys-bar output { min-width: 6rem; }
.keys-info { font-size: .8125rem; color: var(--muted, inherit); padding: 0 8px; }
.cert-skills li { break-inside: avoid; margin-bottom: 6px; }

/* Verwaltung */
.admin .wrap { max-width: 1200px; }
.admin-nav { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 20px; }
.admin-nav a { padding: 6px 12px; border: 1px solid var(--accent-line); border-radius: var(--radius); text-decoration: none; }
.admin .stats.admin-kpi { max-width: none; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.admin-kpi small { font-weight: 400; opacity: .8; }
.admin-table { overflow-x: auto; margin-bottom: 20px; }
.admin-table td, .admin-table th { font-size: .875rem; white-space: nowrap; }
.admin-table td:nth-child(5) { white-space: normal; min-width: 14rem; }
.admin-search, .admin-form { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: end; margin-bottom: 12px; }
.admin-search label, .admin-form label, .admin-inline label { display: grid; gap: 4px; font-size: .8125rem; font-weight: 600; }
.admin-form input, .admin-form select, .admin-search input, .admin-search select, .admin-inline input[type="date"] { min-height: 36px; padding: 0 8px; border: 1px solid var(--grid); border-radius: 4px; background: var(--sheet); color: var(--ink); font: .875rem var(--font); }
.admin-actions { display: grid; gap: 12px; margin-bottom: 20px; }
.admin-inline { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: end; }
.admin-inline label.check { display: flex; align-items: center; gap: 6px; font-weight: 400; }
.btn-danger { background: #b42318; border-color: #b42318; color: #fff; }
.btn-danger:hover { background: #8f1c13; border-color: #8f1c13; color: #fff; }

/* Preise */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; max-width: 760px; margin: 8px 0 12px; }
.plan { display: grid; gap: 6px; align-content: start; padding: 20px; border: 1px solid var(--grid); border-radius: var(--radius); background: var(--sheet); }
.plan h3 { margin: 0; }
.plan-best { border: 2px solid var(--accent); }
.plan-badge { justify-self: start; margin: 0; padding: 2px 10px; border-radius: 999px; background: var(--marker, #fde68a); color: #3b2f00; font-weight: 700; font-size: .875rem; }
.plan-price { margin: 4px 0 0; }
.plan-price strong { font-size: 2rem; }
.plan-sub { margin: 0 0 8px; color: var(--ink-soft); }
.plan .btn { justify-self: start; }
.cancel-kind { display: grid; gap: 6px; margin: 0; padding: 0; border: 0; } .cancel-kind legend { font-weight: 600; margin-bottom: 4px; } .account-form textarea { width: 100%; padding: 8px; border: 1px solid var(--grid); border-radius: 4px; font: inherit; background: var(--sheet); color: var(--ink); } .dash-delete { margin-top: 40px; }