/* Produktseite «Lernen braucht Reibung» — Gestaltung nach dem Buch (Ausgabe 1.0).
   Umschlag: Creme, Serif-Titel mit rotem Schlusswort. Innenseiten: Weiss, schmale
   Grotesk-Titel (Archivo), Kursive Serif (Newsreader), rote Nummern, rote KI-Phase.
   Rückseite: Dunkelblau. Kopf- und Fusszeile bleiben im Stil der Website. */
@font-face { font-family: 'LBR Archivo'; src: url('/lernen-braucht-reibung/fonts/archivo.woff2') format('woff2'); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }
@font-face { font-family: 'LBR Newsreader'; src: url('/lernen-braucht-reibung/fonts/newsreader.woff2') format('woff2'); font-weight: 200 800; font-display: swap; }
@font-face { font-family: 'LBR Newsreader'; font-style: italic; src: url('/lernen-braucht-reibung/fonts/newsreader-italic.woff2') format('woff2'); font-weight: 200 800; font-display: swap; }

.layout.lbr-layout { max-width: none; padding: 0; display: block; }
.lbr-page {
  --lbr-red: #b6223a;
  --lbr-red-cover: #c8102e;
  --lbr-red-dark: #951a2e;
  --lbr-ink: #212b37;
  --lbr-black: #0b0d0d;
  --lbr-navy: #1c2733;
  --lbr-cream: #f7f3eb;
  --lbr-white: #ffffff;
  --lbr-grey: #6e747c;
  --lbr-hair: #e2e3e5;
  --lbr-sans: 'LBR Archivo', Arial Narrow, Arial, sans-serif;
  --lbr-serif: 'LBR Newsreader', Georgia, serif;
  background: var(--lbr-white);
  color: var(--lbr-ink);
  font-family: var(--lbr-serif);
  font-size: 18px;
  line-height: 1.55;
}
.lbr-page *, .lbr-page *::before, .lbr-page *::after { box-sizing: border-box; }
.lbr-wrap { max-width: 1216px; margin: 0 auto; padding: 0 52px; }
.lbr-narrow { max-width: 880px; }
.lbr-page p { margin: 0; }
.lbr-page h1, .lbr-page h2, .lbr-page h3 { margin: 0; color: inherit; }
.lbr-page h2 { font-family: var(--lbr-sans); font-stretch: 78%; font-weight: 700; font-size: clamp(2.1rem, 4.2vw, 3.4rem); line-height: 1.02; letter-spacing: -.01em; max-width: 24ch; }
.lbr-page h3 { font-family: var(--lbr-sans); font-stretch: 82%; font-weight: 700; font-size: 1.35rem; line-height: 1.1; }
.lbr-eyebrow, .lbr-kicker, .lbr-meta, .lbr-fineprint, .lbr-phase-tag, .lbr-num, .lbr-price-line, .lbr-status {
  font-family: var(--lbr-sans); font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
}
.lbr-eyebrow { color: var(--lbr-red); margin: 0 0 18px !important; }
.lbr-kicker { color: var(--lbr-ink); margin-top: 8px !important; }
.lbr-lead { font-size: 1.2rem; line-height: 1.55; margin-top: 20px !important; max-width: 62ch; }
.lbr-rule { display: block; width: 72px; height: 3px; background: var(--lbr-red-cover); margin: 0 0 26px; }

/* Hero wie der Umschlag */
.lbr-hero { background: var(--lbr-cream); border-bottom: 1px solid var(--lbr-ink); padding: 76px 0 84px; }
.lbr-hero--small { padding: 64px 0; }
.lbr-hero-grid { display: grid; grid-template-columns: 1.1fr .75fr; gap: 72px; align-items: center; }
.lbr-hero .lbr-eyebrow { color: var(--lbr-ink); }
.lbr-page .lbr-hero h1 { font-family: var(--lbr-serif); font-weight: 400; font-size: clamp(3.4rem, 7.6vw, 6.4rem); line-height: .92; letter-spacing: -.02em; color: var(--lbr-black); margin-bottom: 28px; max-width: 9ch; }
.lbr-title-accent { color: var(--lbr-red-cover); }
.lbr-subtitle { font-family: var(--lbr-sans); font-weight: 500; font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.3; max-width: 30ch; }
.lbr-hero .lbr-lead { font-style: italic; }
.lbr-cover { margin: 0; justify-self: center; width: 100%; max-width: 380px; border: 1px solid var(--lbr-ink); box-shadow: 12px 12px 0 var(--lbr-navy); background: var(--lbr-cream); }
.lbr-cover img { display: block; width: 100%; height: auto; }
.lbr-price-line { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: baseline; border-top: 1px solid var(--lbr-ink); border-bottom: 1px solid var(--lbr-ink); padding: 12px 0; margin: 32px 0 0 !important; }
.lbr-price-now strong { font-family: var(--lbr-sans); font-stretch: 78%; font-weight: 700; font-size: 1.9rem; letter-spacing: 0; color: var(--lbr-red); }
.lbr-price-now s { color: var(--lbr-grey); margin-left: 6px; }
.lbr-launch-note { font-family: var(--lbr-sans); color: var(--lbr-red); font-weight: 600; font-size: .95rem; margin-top: 10px !important; }
.lbr-hero .lbr-launch-note + .lbr-cta, .lbr-hero .lbr-price-line + .lbr-cta { margin-top: 28px; }

/* Knöpfe */
.lbr-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.lbr-cta--compact { margin-top: 0; }
.lbr-button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 12px 24px; border: 1px solid var(--lbr-ink); font: 600 15px/1.2 var(--lbr-sans); letter-spacing: .01em; text-decoration: none; cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.lbr-button--primary { background: var(--lbr-red); border-color: var(--lbr-red); color: #fff; }
.lbr-button--primary:hover { background: var(--lbr-red-dark); border-color: var(--lbr-red-dark); color: #fff; }
.lbr-button--ghost { background: transparent; color: var(--lbr-ink); }
.lbr-button--ghost:hover { background: var(--lbr-ink); color: #fff; }
.lbr-button:focus-visible, .lbr-textbutton:focus-visible, .lbr-preview:focus-visible, .lbr-faq-item summary:focus-visible { outline: 2px solid var(--lbr-red); outline-offset: 4px; }
.lbr-textbutton { background: none; border: 0; padding: 0; color: var(--lbr-red); font: 600 14px/1.4 var(--lbr-sans); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

/* Bänder wie Innenseiten */
.lbr-band { padding: 96px 0; border-bottom: 1px solid var(--lbr-hair); background: var(--lbr-white); }
.lbr-band--tint { background: var(--lbr-cream); }
.lbr-band--dark { background: var(--lbr-navy); color: #fff; border-bottom: 0; }
.lbr-band--dark .lbr-eyebrow { color: #fff; opacity: .8; }
.lbr-band--dark .lbr-lead { color: rgba(255, 255, 255, .86); }
.lbr-band--dark .lbr-button--primary:hover { background: #fff; color: var(--lbr-navy); border-color: #fff; }
.lbr-band--dark h2 { margin-bottom: 32px; max-width: 20ch; }
.lbr-split { display: grid; grid-template-columns: .32fr 1fr; gap: 40px; }

/* Raster: Kompass, Phasen, Aufgabentypen (Tabellenlook wie im Buch) */
.lbr-grid { list-style: none; margin: 48px 0 0; padding: 0; display: grid; border-top: 1px solid var(--lbr-ink); }
.lbr-grid > li { border-bottom: 1px solid var(--lbr-ink); padding: 22px 22px 24px 0; }
.lbr-grid--5 { grid-template-columns: repeat(5, 1fr); column-gap: 24px; }
.lbr-grid--6 { grid-template-columns: repeat(6, 1fr); column-gap: 0; }
.lbr-grid--3 { grid-template-columns: repeat(3, 1fr); column-gap: 24px; }
.lbr-grid h3 { margin-top: 18px; }
.lbr-grid p { margin-top: 8px !important; font-size: 1rem; font-style: italic; }
.lbr-num { color: var(--lbr-red); font-size: 13px; }
.lbr-grid--5 .lbr-num { font-stretch: 70%; font-weight: 700; font-size: 2.6rem; letter-spacing: 0; line-height: 1; }
.lbr-phases > li { display: flex; flex-direction: column; padding: 20px 18px 22px; border-right: 1px solid var(--lbr-hair); background: var(--lbr-white); }
.lbr-phases > li:last-child { border-right: 0; }
.lbr-phase-no { font-family: var(--lbr-sans); font-stretch: 70%; font-weight: 700; font-size: 2.8rem; line-height: 1; }
.lbr-phases h3 { margin-top: 16px; font-size: 1.2rem; }
.lbr-phase-tag { margin-top: auto; padding-top: 16px; font-size: 11px; color: var(--lbr-grey); }
.lbr-phases > li.is-ai { background: var(--lbr-red); color: #fff; border-color: var(--lbr-red); }
.lbr-phases > li.is-ai .lbr-phase-tag { color: var(--lbr-red); background: #fff; align-self: flex-start; padding: 3px 7px; margin-top: auto; }
.lbr-phases > li.is-ai p { color: #fff; }
.lbr-methods > li { font-family: var(--lbr-sans); font-stretch: 82%; font-weight: 700; font-size: 1.3rem; padding: 18px 0; }
.lbr-methods .lbr-num { margin-right: 14px; }
.lbr-h3 { margin-top: 64px !important; font-size: 1.8rem !important; }

/* Werkstätten */
.lbr-workshops { margin-top: 48px; border-top: 1px solid var(--lbr-ink); }
.lbr-workshop { display: grid; grid-template-columns: 140px 1fr; gap: 24px; padding: 36px 0; border-bottom: 1px solid var(--lbr-ink); }
.lbr-workshop-no { font-family: var(--lbr-sans); font-stretch: 66%; font-weight: 700; font-size: 5rem; line-height: .85; color: var(--lbr-red); }
.lbr-workshop h3 { font-size: 2rem; }
.lbr-workshop .lbr-kicker { color: var(--lbr-red); }
.lbr-workshop-benefit { margin-top: 16px !important; font-size: 1.15rem; max-width: 68ch; }
.lbr-workshop-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 22px 0 0; padding-top: 16px; border-top: 1px solid var(--lbr-hair); font-size: 1rem; }
.lbr-workshop-facts dt { font-family: var(--lbr-sans); font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--lbr-grey); }
.lbr-workshop-facts dd { margin: 4px 0 0; font-family: var(--lbr-sans); font-weight: 500; font-size: .98rem; }

/* Inhalt */
.lbr-files { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
.lbr-file { background: var(--lbr-white); border-top: 1px solid var(--lbr-ink); border-bottom: 1px solid var(--lbr-ink); padding: 28px 0 30px; }
.lbr-file .lbr-kicker { color: var(--lbr-red); margin: 0 0 12px !important; }
.lbr-band--tint .lbr-file { background: transparent; }
.lbr-file h3 { font-size: 2.1rem; }
.lbr-file p:last-child { margin-top: 14px !important; }
.lbr-meta { margin-top: 20px !important; color: var(--lbr-grey); line-height: 1.8; }

/* Leseprobe */
.lbr-previews { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 48px 0 36px; }
.lbr-preview { background: var(--lbr-white); border: 1px solid var(--lbr-hair); padding: 0 0 12px; text-align: left; cursor: zoom-in; font: 600 13px/1.4 var(--lbr-sans); color: var(--lbr-ink); box-shadow: 0 1px 0 var(--lbr-hair); }
.lbr-preview img { display: block; width: 100%; height: auto; aspect-ratio: 210 / 297; object-fit: cover; border-bottom: 1px solid var(--lbr-hair); }
.lbr-preview span { display: block; margin: 12px 12px 0; text-decoration: underline; text-underline-offset: 3px; }
.lbr-preview:hover { border-color: var(--lbr-red); }
.lbr-zoom { border: 1px solid var(--lbr-ink); background: var(--lbr-white); padding: 16px; max-width: min(900px, 94vw); max-height: 94vh; }
.lbr-zoom::backdrop { background: rgba(28, 39, 51, .75); }
.lbr-zoom form { text-align: right; margin-bottom: 10px; }
.lbr-zoom img { display: block; max-width: 100%; max-height: 82vh; margin: 0 auto; }

/* Autor wie Rückseite */
.lbr-author { display: grid; grid-template-columns: .7fr 1.3fr; gap: 64px; align-items: center; }
.lbr-author img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; border: 1px solid var(--lbr-ink); }
.lbr-author blockquote { margin: 24px 0 0; font-family: var(--lbr-serif); font-style: italic; color: var(--lbr-red); font-size: clamp(1.5rem, 2.6vw, 2.2rem); line-height: 1.25; }

/* Kaufen */
.lbr-buy { border-top: 1px solid var(--lbr-ink); background: var(--lbr-white); }
.lbr-buy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.lbr-buy-amount { font-family: var(--lbr-sans); font-stretch: 70%; font-weight: 700; font-size: clamp(3.6rem, 7vw, 5.6rem); line-height: .95; color: var(--lbr-ink); }
.lbr-checklist { list-style: none; padding: 0; margin: 28px 0 0; font-size: 1.08rem; border-top: 1px solid var(--lbr-ink); }
.lbr-checklist li { padding: 9px 0 9px 30px; border-bottom: 1px solid var(--lbr-hair); position: relative; }
.lbr-checklist li::before { content: "✓"; position: absolute; left: 2px; color: var(--lbr-red); font-family: var(--lbr-sans); font-weight: 700; }
.lbr-checklist li.is-no::before { content: "✕"; color: var(--lbr-grey); }
.lbr-checklist li.is-no { color: var(--lbr-grey); }
.lbr-checkout { background: var(--lbr-cream); border: 1px solid var(--lbr-ink); padding: 28px; min-height: 200px; }
.lbr-checkout > div > p { font-style: italic; }
.lbr-checkout .lbr-button { margin-top: 20px; }
.lbr-status { color: var(--lbr-grey); }
.lbr-status--big { font-family: var(--lbr-sans); font-stretch: 80%; font-weight: 700; font-size: 1.7rem; letter-spacing: 0; text-transform: none; color: var(--lbr-ink); border-left: 4px solid var(--lbr-red); padding-left: 18px; }
.lbr-alert { border-left: 4px solid var(--lbr-red); padding: 4px 0 4px 16px; margin-bottom: 18px; font-family: var(--lbr-sans); font-weight: 600; }
.lbr-alert--box { border: 1px solid var(--lbr-ink); border-left: 6px solid var(--lbr-red); background: var(--lbr-cream); padding: 28px; max-width: 760px; font-family: var(--lbr-serif); font-weight: 400; }
.lbr-alert--box h2 { font-size: 2rem; margin-bottom: 14px; }
.lbr-alert--box .lbr-button { margin-top: 20px; }
.lbr-fineprint { margin-top: 18px !important; color: var(--lbr-grey); font-size: 11px; line-height: 1.7; }
.lbr-fineprint a, .lbr-thanks-notes a, .lbr-alert a { color: var(--lbr-red); }

/* FAQ */
.lbr-faq { margin-top: 40px; border-top: 1px solid var(--lbr-ink); }
.lbr-faq-item { border-bottom: 1px solid var(--lbr-hair); padding: 20px 0; }
.lbr-faq-item summary { display: flex; justify-content: space-between; gap: 24px; cursor: pointer; list-style: none; font-family: var(--lbr-sans); font-stretch: 85%; font-weight: 700; font-size: 1.3rem; line-height: 1.25; }
.lbr-faq-item summary::-webkit-details-marker { display: none; }
.lbr-faq-item summary span { color: var(--lbr-red); transition: transform .15s; }
.lbr-faq-item[open] summary span { transform: rotate(45deg); }
.lbr-faq-item p { margin-top: 12px !important; max-width: 68ch; }

/* Sticky-Kaufleiste */
.lbr-sticky { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; background: rgba(255, 255, 255, .96); border-top: 1px solid var(--lbr-ink); padding: 12px 0 calc(12px + env(safe-area-inset-bottom)); backdrop-filter: blur(6px); }
.lbr-sticky[hidden] { display: none; }
.lbr-sticky .lbr-wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.lbr-sticky strong { display: block; font-family: var(--lbr-sans); font-stretch: 80%; font-weight: 700; font-size: 1.2rem; }
.lbr-sticky span { font-family: var(--lbr-sans); font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--lbr-grey); }
.lbr-sticky .lbr-button { min-height: 44px; }

/* Dankeseite */
.lbr-thanks .lbr-hero h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); max-width: 16ch; }
.lbr-downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 880px; }
.lbr-downloads a { display: block; padding: 26px 28px; border: 1px solid var(--lbr-ink); border-top: 6px solid var(--lbr-red); background: var(--lbr-white); color: var(--lbr-ink); text-decoration: none; }
.lbr-downloads a:hover { background: var(--lbr-red); color: #fff; border-color: var(--lbr-red); }
.lbr-downloads small { font-family: var(--lbr-sans); font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.lbr-downloads strong { display: block; margin-top: 24px; font-family: var(--lbr-sans); font-stretch: 80%; font-weight: 700; font-size: 1.7rem; text-decoration: underline; text-underline-offset: 5px; }
.lbr-thanks-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 880px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--lbr-hair); font-size: 1rem; color: var(--lbr-grey); }
.lbr-thanks-notes strong { color: var(--lbr-ink); }

.lbr-visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[data-lbr-page] [hidden], [data-lbr-thanks] [hidden] { display: none !important; }

@media (max-width: 1080px) {
  .lbr-grid--5, .lbr-grid--6 { grid-template-columns: repeat(3, 1fr); }
  .lbr-phases > li { border-bottom: 1px solid var(--lbr-ink); }
  .lbr-previews { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .lbr-wrap { padding: 0 20px; }
  .lbr-page { font-size: 17px; }
  .lbr-hero { padding: 44px 0 56px; }
  .lbr-hero-grid, .lbr-split, .lbr-author, .lbr-buy-grid, .lbr-files, .lbr-thanks-notes, .lbr-downloads { grid-template-columns: 1fr; gap: 32px; }
  .lbr-cover { max-width: 280px; box-shadow: 8px 8px 0 var(--lbr-navy); }
  .lbr-band { padding: 64px 0; }
  .lbr-grid--5, .lbr-grid--6, .lbr-grid--3 { grid-template-columns: 1fr 1fr; }
  .lbr-workshop { grid-template-columns: 1fr; gap: 8px; }
  .lbr-workshop-facts { grid-template-columns: 1fr; }
  .lbr-sticky .lbr-wrap > div:first-child { display: none; }
  .lbr-sticky .lbr-cta--compact, .lbr-sticky .lbr-button { width: 100%; }
}
@media (max-width: 480px) {
  .lbr-grid--5, .lbr-grid--6, .lbr-grid--3, .lbr-previews { grid-template-columns: 1fr; }
  .lbr-phases > li { border-right: 0; }
  .lbr-cta .lbr-button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .lbr-page * { transition: none !important; }
}