/* parsQube Fachbibliothek – Regal, 3D-Cover, Leseumgebung, Blättern. Werte aus tokens.css. */
.tone-violet { --tone: var(--tone-violet); --tone-deep: #5b3f85; }
.tone-sky    { --tone: var(--tone-sky);    --tone-deep: #1f6f9c; }
.tone-teal   { --tone: var(--tone-teal);   --tone-deep: #1f6b55; }
.tone-green  { --tone: var(--tone-green);  --tone-deep: #35621f; }

/* ================= 3D-Buch ================= */
.shelf { display: grid; grid-template-columns: repeat(auto-fit, minmax(208px, 1fr)); gap: var(--s-8) var(--s-6); padding-top: var(--s-3); }
.book { display: grid; justify-items: center; gap: var(--s-5); color: var(--ink); text-decoration: none; transition: transform var(--dur-fast) var(--ease-out); }
.book:hover { color: var(--ink); }
.book:active { transform: var(--press); }
.book3d { display: block; width: 176px; aspect-ratio: 176 / 244; perspective: 1400px; }
.book3d__body { position: relative; display: block; width: 100%; height: 100%; transform-style: preserve-3d; transform: rotateY(24deg) rotateX(2deg); transition: transform 720ms var(--ease-out); }
/* Kontaktschatten am Boden statt großem Schlagschatten */
.book3d::after { content: ""; display: block; position: relative; top: calc(-1 * var(--s-2)); height: var(--s-4); margin-inline: var(--s-3); border-radius: 50%; background: radial-gradient(closest-side, rgb(17 26 36 / .18), transparent); transition: transform 720ms var(--ease-out), opacity 720ms var(--ease-out); }
.book:hover .book3d::after { transform: scaleX(.86); opacity: .7; }
.book3d__spine { position: absolute; inset: 0 auto 0 0; width: var(--s-5); transform-origin: left center; transform: rotateY(-90deg); background: linear-gradient(90deg, var(--tone-deep), var(--tone)); border-radius: var(--s-1) 0 0 var(--s-1); }
.book3d__spine span { position: absolute; top: 50%; left: 50%; translate: -50% -50%; rotate: -90deg; color: rgb(255 255 255 / .9); font: var(--w-semibold) 10px / 1 var(--mono); white-space: nowrap; }
.book3d__pages { position: absolute; inset: var(--s-1) var(--s-1) var(--s-1) 0; border-radius: 0 var(--s-1) var(--s-1) 0; background: repeating-linear-gradient(90deg, #fbfbf9 0 2px, #ecebe6 2px 3px); transform: translateZ(-1px); }
.book3d__inside { position: absolute; inset: var(--s-1) var(--s-1) var(--s-1) 0; overflow: hidden; padding: var(--s-4) var(--s-3) var(--s-4) var(--s-7); border-radius: 0 var(--s-1) var(--s-1) 0; background: #fff; color: #111a24; font-size: var(--fs-12); line-height: var(--lh-ui); transform: translateZ(0); }
.book3d__inside b { display: block; margin-bottom: var(--s-2); color: #5d6874; font: var(--w-semibold) 10px / 1.5 var(--mono); }
.book3d__inside ol { display: grid; gap: var(--s-1); margin: 0; padding-left: var(--s-3); }
.book3d__cover { position: absolute; inset: 0; display: flex; flex-direction: column; overflow: hidden; padding: var(--s-5) var(--s-4) var(--s-4) var(--s-5); border-radius: var(--s-0) var(--r-xs) var(--r-xs) var(--s-0); background: linear-gradient(155deg, var(--tone) 0%, var(--tone-deep) 92%); color: #fff; box-shadow: inset var(--s-1) 0 0 rgb(0 0 0 / .12), inset 6px 0 0 rgb(255 255 255 / .1); transform-origin: left center; transform: translateZ(2px); backface-visibility: hidden; transition: transform 720ms var(--ease-out); }
.book3d__cover::after { content: "</>"; position: absolute; right: calc(-1 * var(--s-2)); bottom: var(--s-6); color: rgb(255 255 255 / .1); font: var(--w-semibold) 88px / 1 var(--mono); letter-spacing: -.08em; }
.book3d__series { display: block; opacity: .85; font: var(--w-semibold) 10px / 1.5 var(--mono); }
.book3d__title { display: block; margin-top: auto; font-size: 28px; font-weight: var(--w-bold); line-height: 1.05; letter-spacing: var(--tracking-heading); }
.book3d__meta { display: block; margin-top: var(--s-2); opacity: .85; font-size: var(--fs-12); line-height: var(--lh-ui); }
.book3d__bar { display: block; height: 3px; margin-top: var(--s-3); overflow: hidden; border-radius: 3px; background: rgb(255 255 255 / .3); }
.book3d__bar i { display: block; width: var(--read, 0%); height: 100%; background: #fff; }
.book:hover .book3d__body, .book:focus-visible .book3d__body, .book.is-peek .book3d__body { transform: rotateY(4deg) translate(var(--s-4), calc(-1 * var(--s-1))); }
.book:hover .book3d__cover, .book:focus-visible .book3d__cover, .book.is-peek .book3d__cover { transform: translateZ(2px) rotateY(-72deg); }
.book:focus-visible { box-shadow: none; }
.book:focus-visible .book__label strong { box-shadow: var(--ring); border-radius: var(--r-xs); }
.book__label { display: block; text-align: center; }
.book__label strong { display: block; color: var(--ink); font-size: var(--fs-18); font-weight: var(--w-semibold); line-height: 1.3; letter-spacing: var(--tracking-heading); }
.book__label > span { color: var(--muted); font-size: var(--fs-14); line-height: var(--lh-ui); }
.book__resume { display: none; margin-top: var(--s-1); color: var(--brand-text); font-size: var(--fs-14); font-weight: var(--w-semibold); }
.book__resume.is-set { display: block; }
.mini-cover { display: flex; align-items: flex-end; width: var(--s-8); height: var(--s-9); padding: var(--s-1) var(--s-1) var(--s-1) var(--s-2); border-radius: var(--s-0) var(--s-1) var(--s-1) var(--s-0); background: linear-gradient(155deg, var(--tone), var(--tone-deep)); box-shadow: inset 3px 0 0 rgb(0 0 0 / .14); color: #fff; font: var(--w-bold) 10px / 1.1 var(--sans); text-align: left; }
.mini-cover--glyph::after { content: "</>"; margin: auto; opacity: .8; font: var(--w-semibold) var(--fs-12) / 1 var(--mono); }

/* ================= Leseumgebung ================= */
.reader { padding-block: var(--s-6) var(--section); }
.reader .wrap { display: grid; grid-template-columns: 272px minmax(0, var(--measure)) 192px; gap: var(--s-8); align-items: start; }
@media (max-width: 1279px) { .reader .wrap { grid-template-columns: 256px minmax(0, var(--measure)); } .onpage { display: none; } }
@media (max-width: 960px) { .reader .wrap { grid-template-columns: 1fr; gap: var(--s-5); } }

.spine { position: sticky; top: calc(var(--header-h) + var(--s-5)); display: flex; flex-direction: column; max-height: calc(100vh - var(--header-h) - var(--s-7)); view-transition-name: pq-spine; }
.spine__head { display: grid; grid-template-columns: var(--s-8) 1fr; gap: var(--s-3); align-items: center; padding-bottom: var(--s-4); color: var(--ink); text-decoration: none; }
.spine__head strong { display: block; font-size: var(--fs-16); font-weight: var(--w-semibold); line-height: 1.3; }
.spine__head span span, .spine__head > span > span { color: var(--muted); font-size: var(--fs-14); line-height: var(--lh-ui); font-variant-numeric: tabular-nums; }
.spine__progress { height: var(--s-1); margin-bottom: var(--s-4); overflow: hidden; border-radius: var(--s-1); background: var(--surface-3); }
.spine__progress i { display: block; width: var(--progress); height: 100%; border-radius: var(--s-1); background: linear-gradient(90deg, var(--tone-deep), var(--tone)); transition: width var(--dur-slow) var(--ease-out); }
.toc { margin-right: calc(-1 * var(--s-2)); padding-right: var(--s-2); overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.toc ol { margin: 0; padding: 0; list-style: none; }
.toc ol ol { margin: var(--s-0) 0 var(--s-2) var(--s-3); padding-left: var(--s-2); border-left: var(--border); }
.toc a { display: flex; gap: var(--s-2); padding: var(--s-1) var(--s-3); border-radius: var(--r-sm); color: var(--muted); font-size: var(--fs-14); line-height: var(--lh-ui); text-decoration: none; transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out); }
.toc li { padding-block: var(--s-0); }
.toc a:hover { background: var(--surface-3); color: var(--ink); }
.toc .is-open > a { color: var(--ink); font-weight: var(--w-semibold); }
.toc a[aria-current="page"] { background: color-mix(in srgb, var(--tone) 12%, transparent); color: var(--ink); font-weight: var(--w-semibold); box-shadow: inset var(--s-0) 0 0 var(--tone); }
.toc__no { min-width: 2em; color: var(--subtle); font: var(--fs-12) / 1.75 var(--mono); }
.spine__toggle { display: none; }
@media (max-width: 960px) {
  .spine { position: static; max-height: none; padding: var(--s-4); border: var(--border); border-radius: var(--r-lg); background: var(--surface-2); }
  .spine__head { padding-bottom: var(--s-3); }
  .spine__progress { margin-bottom: var(--s-1); }
  .spine__toggle { display: flex; justify-content: space-between; align-items: center; width: 100%; padding: var(--s-3) 0 0; border: 0; background: none; color: var(--brand-text); font: var(--w-semibold) var(--fs-14) / var(--lh-ui) var(--sans); cursor: pointer; }
  .spine__toggle svg { width: var(--s-4); height: var(--s-4); transition: transform var(--dur-base) var(--ease-out); }
  .spine.is-open .spine__toggle svg { transform: rotate(180deg); }
  .toc { display: none; opacity: 0; transform: translateY(calc(-1 * var(--s-1))); transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), display var(--dur-base) allow-discrete; }
  .spine.is-open .toc { display: block; max-height: 60vh; margin-top: var(--s-3); opacity: 1; transform: none; }
}
@starting-style { .spine.is-open .toc { opacity: 0; transform: translateY(calc(-1 * var(--s-1))); } }

.reader__page { min-width: 0; view-transition-name: pq-page; }
.reader__chapter { margin: 0 0 var(--s-3); color: var(--tone-deep); font: var(--w-semibold) var(--fs-12) / var(--lh-ui) var(--mono); }
@media (prefers-color-scheme: dark) { .reader__chapter { color: var(--tone); } }
.reader__page h1 { margin-bottom: var(--s-4); font-size: var(--fs-40); }
.reader__meta { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); margin-bottom: var(--s-6); padding-bottom: var(--s-5); border-bottom: var(--border); color: var(--muted); font-size: var(--fs-14); line-height: var(--lh-ui); }
.reader__meta span { display: inline-flex; align-items: center; gap: var(--s-2); }
.reader__meta svg { width: var(--s-4); height: var(--s-4); opacity: .6; }

/* Blätterleiste */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); margin-top: var(--s-9); }
.pager a { display: grid; gap: var(--s-1); padding: var(--s-4) var(--s-5); border: var(--border); border-radius: var(--r-lg); background: var(--surface); color: var(--ink); text-decoration: none; transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.pager a:hover { border-color: color-mix(in srgb, var(--tone) 55%, var(--line)); background: color-mix(in srgb, var(--tone) 5%, var(--surface)); }
.pager__dir { display: flex; align-items: center; gap: var(--s-2); color: var(--muted); font: var(--w-semibold) var(--fs-12) / var(--lh-ui) var(--mono); }
.pager__dir svg { width: var(--s-4); height: var(--s-4); transition: transform var(--dur-base) var(--ease-out); }
.pager__next { grid-column: 2; text-align: right; }
.pager__next .pager__dir { justify-content: flex-end; }
.pager__prev:hover svg { transform: translateX(calc(-1 * var(--s-1))); }
.pager__next:hover svg { transform: translateX(var(--s-1)); }
.pager__title { font-size: var(--fs-16); font-weight: var(--w-semibold); line-height: 1.4; }
.pager kbd { padding: 0 var(--s-1); border: var(--border); border-bottom-width: var(--s-0); border-radius: var(--s-1); color: var(--subtle); font: 10px / 1.6 var(--mono); }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager__next { grid-column: 1; } .pager kbd { display: none; } }

/* Seitenkante: jede Seite des Buchs als Strich */
.edge { margin-top: var(--s-6); }
.edge__label { display: flex; justify-content: space-between; margin-bottom: var(--s-2); color: var(--subtle); font-size: var(--fs-12); line-height: var(--lh-ui); }
.edge__ticks { display: flex; align-items: flex-end; gap: var(--s-0); height: var(--s-6); }
.edge__ticks a { position: relative; flex: 1 1 0; max-width: 10px; height: var(--s-3); border-radius: var(--s-0); background: var(--line); transition: height var(--dur-base) var(--ease-spring), background var(--dur-fast) var(--ease-out); }
.edge__ticks a.is-read { background: color-mix(in srgb, var(--tone) 40%, var(--line)); }
.edge__ticks a.is-chapter { height: var(--s-5); }
.edge__ticks a:hover { height: var(--s-6); background: var(--tone); }
.edge__ticks a[aria-current] { height: var(--s-6); background: var(--tone-deep); }
.edge__tip { position: absolute; bottom: calc(100% + var(--s-2)); left: 50%; padding: var(--s-1) var(--s-2); border-radius: var(--r-xs); background: var(--ink); color: var(--surface); font-size: var(--fs-12); line-height: var(--lh-ui); white-space: nowrap; pointer-events: none; opacity: 0; transform: translateX(-50%) translateY(var(--s-1)) scale(.96); transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.edge__ticks a:hover .edge__tip { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }

/* Auf dieser Seite */
.onpage { position: sticky; top: calc(var(--header-h) + var(--s-5)); font-size: var(--fs-14); line-height: var(--lh-ui); }
.onpage h2 { margin-bottom: var(--s-3); color: var(--subtle); font: var(--w-semibold) var(--fs-12) / var(--lh-ui) var(--mono); letter-spacing: 0; }
.onpage ul { margin: 0; padding: 0; list-style: none; border-left: var(--border); }
.onpage a { display: block; margin-left: -1px; padding: var(--s-1) var(--s-3); border-left: var(--s-0) solid transparent; color: var(--muted); text-decoration: none; transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-base) var(--ease-out); }
.onpage a:hover { color: var(--ink); }
.onpage a.is-active { border-left-color: var(--tone); color: var(--ink); }
.onpage .lvl-3 a { padding-left: var(--s-5); }

/* Lesefortschritt in der Header-Linie (an den Scroll gekoppelt – folgt dem Finger 1:1) */
.is-reading .site-header::after { background: var(--line); }
.read-progress { position: absolute; right: 0; bottom: 0; left: 0; height: var(--s-0); background: var(--gradient); transform: scaleX(0); transform-origin: left; }
@supports (animation-timeline: scroll()) {
  .read-progress { animation: grow linear both; animation-timeline: scroll(root); }
  @keyframes grow { to { transform: scaleX(1); } }
}
@supports not (animation-timeline: scroll()) { .read-progress { transform: scaleX(var(--read-progress, 0)); } }

/* Buchstart: Cover + Inhaltsverzeichnis */
.bookhead { padding-block: var(--s-9); border-bottom: var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--tone) 9%, var(--surface)), var(--surface)); }
.bookhead .wrap { display: grid; grid-template-columns: 224px 1fr; gap: var(--s-9); align-items: center; }
.bookhead .book3d { width: 192px; }
.bookhead h1 { font-size: var(--fs-40); }
.bookhead p { max-width: 40em; color: var(--muted); font-size: var(--fs-18); }
.bookhead__actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-5); }
.bookhead__stats { margin-top: var(--s-4); color: var(--subtle); font-size: var(--fs-14); }
@media (max-width: 720px) { .bookhead .wrap { grid-template-columns: 1fr; justify-items: start; gap: var(--s-6); } }
.bookbody { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-9); }
.bookbody h2 { font-size: var(--fs-24); }
@media (max-width: 900px) { .bookbody { grid-template-columns: 1fr; gap: var(--s-7); } }
.fulltoc { margin: 0; padding: 0; list-style: none; }
.fulltoc > li { padding: var(--s-4) 0; border-bottom: var(--border); }
.fulltoc a { display: flex; align-items: baseline; gap: var(--s-3); color: var(--ink); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
.fulltoc a:hover { color: var(--brand-text); }
.fulltoc > li > a { font-size: var(--fs-18); font-weight: var(--w-semibold); line-height: 1.4; }
.fulltoc__no { min-width: 2.5em; color: var(--tone-deep); font: var(--w-semibold) var(--fs-14) / 1 var(--mono); }
.fulltoc__dots { flex: 1; min-width: var(--s-5); border-bottom: 1px dotted var(--line-strong); translate: 0 calc(-1 * var(--s-1)); }
.fulltoc__page { color: var(--subtle); font: var(--fs-14) / 1 var(--mono); font-variant-numeric: tabular-nums; }
.fulltoc ol { display: grid; gap: var(--s-1); margin: var(--s-2) 0 0 2.75em; padding: 0; list-style: none; }
.fulltoc ol a { color: var(--muted); font-size: var(--fs-16); line-height: 1.5; }

/* ================= Seitenwechsel wie Umblättern (View Transitions) ================= */
@view-transition { navigation: auto; }
.site-header { view-transition-name: pq-header; }
::view-transition-old(pq-header), ::view-transition-new(pq-header), ::view-transition-old(pq-spine), ::view-transition-new(pq-spine) { animation: none; }
::view-transition-old(pq-spine) { display: none; }
::view-transition-group(root) { animation-duration: var(--dur-fast); animation-timing-function: var(--ease-out); }
::view-transition-group(pq-page) { animation-duration: 480ms; animation-timing-function: var(--ease-out); }
::view-transition-old(pq-page), ::view-transition-new(pq-page) { height: auto; animation-duration: 480ms; animation-timing-function: var(--ease-out); object-fit: none; object-position: top; }
html:active-view-transition-type(forward)::view-transition-old(pq-page) { transform-origin: left center; animation-name: pq-turn-out-left; animation-duration: 320ms; }
html:active-view-transition-type(forward)::view-transition-new(pq-page) { transform-origin: right center; animation-name: pq-turn-in-right; animation-delay: 80ms; animation-fill-mode: both; }
html:active-view-transition-type(backward)::view-transition-old(pq-page) { transform-origin: right center; animation-name: pq-turn-out-right; animation-duration: 320ms; }
html:active-view-transition-type(backward)::view-transition-new(pq-page) { transform-origin: left center; animation-name: pq-turn-in-left; animation-delay: 80ms; animation-fill-mode: both; }
@keyframes pq-turn-out-left { 60% { opacity: 0; } to { opacity: 0; transform: perspective(1800px) translateX(-5%) rotateY(-12deg) scale(.98); } }
@keyframes pq-turn-in-right { from { opacity: 0; transform: perspective(1800px) translateX(6%) rotateY(8deg) scale(.99); } }
@keyframes pq-turn-out-right { 60% { opacity: 0; } to { opacity: 0; transform: perspective(1800px) translateX(5%) rotateY(12deg) scale(.98); } }
@keyframes pq-turn-in-left { from { opacity: 0; transform: perspective(1800px) translateX(-6%) rotateY(-8deg) scale(.99); } }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation-duration: 120ms !important; animation-delay: 0s !important; }
  html:active-view-transition-type(forward)::view-transition-old(pq-page), html:active-view-transition-type(backward)::view-transition-old(pq-page) { animation-name: pq-fade-out; }
  html:active-view-transition-type(forward)::view-transition-new(pq-page), html:active-view-transition-type(backward)::view-transition-new(pq-page) { animation-name: pq-fade-in; }
  .book3d__body, .book3d__cover { transition: none; }
}
@keyframes pq-fade-out { to { opacity: 0; } }
@keyframes pq-fade-in { from { opacity: 0; } }
@media print { .spine, .pager, .edge, .onpage, .bookhead .book3d { display: none !important; } .reader .wrap { display: block; } }

/* ================= Buch v2: echter 3D-Körper =================
   Vorder- und Rückdeckel mit Abstand (Buchdicke --bt), Buchrücken links, Seitenblock rechts.
   Ruhe: leicht gedreht, Buchrücken sichtbar. Hover: dreht zum Betrachter, Deckel öffnet, Seitenblock wird sichtbar. */
.book3d { --bw: 176px; --bt: 26px; width: var(--bw); perspective: 1600px; }
.bookhead .book3d { --bw: 192px; --bt: 28px; }
.book3d__body { transform: rotateY(30deg) rotateX(4deg); }
.book3d__cover, .book3d__back { border-radius: var(--s-0) var(--r-xs) var(--r-xs) var(--s-0); }
.book3d__cover { z-index: 3; transform: translateZ(calc(var(--bt) / 2)); box-shadow: inset 0 0 0 1px rgb(0 0 0 / .06); }
.book3d__cover::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgb(0 0 0 / .22) 0 3px, rgb(255 255 255 / .18) 3px 5px, rgb(0 0 0 / .06) 5px 9px, transparent 12px),
              linear-gradient(115deg, rgb(255 255 255 / .24) 0%, rgb(255 255 255 / .04) 34%, transparent 50%, rgb(0 0 0 / .1) 100%); }
.book3d__title { text-shadow: 0 1px 0 rgb(0 0 0 / .14); }
.book3d__back { position: absolute; inset: 0; background: var(--tone-deep); transform: translateZ(calc(var(--bt) / -2)) rotateY(180deg); }
.book3d__block { position: absolute; inset: 3px var(--s-1) 3px var(--s-0); background: #f3f1ea; }
/* Buchrücken: Fläche der Dicke --bt an der linken Kante, mit Bund-Schattierung */
.book3d__spine { inset: 0 auto 0 calc(50% - var(--bt) / 2); width: var(--bt); border-radius: var(--s-0); transform-origin: center; transform: rotateY(-90deg) translateZ(calc(var(--bw) / 2));
  background: linear-gradient(90deg, var(--tone-deep), var(--tone) 42%, var(--tone) 58%, var(--tone-deep)); box-shadow: inset 0 6px 0 rgb(255 255 255 / .1), inset 0 -6px 0 rgb(0 0 0 / .12); }
/* Seitenblock rechts: feine Papierlinien */
.book3d__edge { position: absolute; top: 3px; bottom: 3px; left: calc(50% - (var(--bt) - 4px) / 2); width: calc(var(--bt) - 4px); transform: rotateY(90deg) translateZ(calc(var(--bw) / 2 - var(--s-1)));
  background: repeating-linear-gradient(90deg, #fbfaf6 0 1px, #e7e4da 1px 2px); box-shadow: inset 0 0 6px rgb(0 0 0 / .12); }
/* Innenseite (unter dem Deckel): Inhaltsverzeichnis */
.book3d__inside { inset: 3px var(--s-1) 3px var(--s-0); display: flex; flex-direction: column; gap: var(--s-2); padding: var(--s-4) var(--s-3) var(--s-3) var(--s-4); transform: translateZ(calc(var(--bt) / 2 - 1px)); background: linear-gradient(90deg, #ece9e0 0, #fff 10px); color: #111a24; }
.book3d__inside-head { color: var(--tone-deep); font: var(--w-semibold) 10px / 1.4 var(--mono); }
.book3d__inside ol { display: grid; gap: 5px; margin: 0; padding: 0; list-style: none; }
.book3d__inside li { display: grid; grid-template-columns: 14px 1fr; gap: 6px; font-size: 11px; line-height: 1.3; }
.book3d__inside li span { color: var(--tone-deep); font: var(--w-semibold) 10px / 1.3 var(--mono); }
.book3d__more { color: #5d6874; font-size: 10px; }
.book3d__inside-foot { margin-top: auto; padding-top: var(--s-2); border-top: 1px solid #e7e4da; color: #5d6874; font-size: 10px; line-height: 1.4; }
.book3d__inside-foot b { display: block; margin-top: 2px; color: var(--tone-deep); font-size: 11px; font-weight: var(--w-semibold); }
/* Kontaktschatten passend zur Dicke */
.book3d::after { top: calc(-1 * var(--s-1)); margin-inline: var(--s-2) calc(-1 * var(--s-2)); background: radial-gradient(closest-side, rgb(17 26 36 / .22), transparent); }
/* Hover / Fokus / Tippen: dezent (wie die erste Variante, Deckel ein paar Grad weiter) – Buch dreht fast frontal, hebt sich,
   der Deckel öffnet sich einen Spalt und lässt rechts die Innenseite aufblitzen */
.book:hover .book3d__body, .book:focus-visible .book3d__body, .book.is-peek .book3d__body { transform: rotateY(6deg) rotateX(2deg) translate(var(--s-3), calc(-1 * var(--s-2))); }
.book:hover .book3d__cover, .book:focus-visible .book3d__cover, .book.is-peek .book3d__cover { transform: translateZ(calc(var(--bt) / 2)) rotateY(-58deg); }
.book:hover .book3d::after { transform: scaleX(.9); opacity: .65; }
.shelf { gap: var(--s-9) var(--s-7); }
.dropdown--books .mini-cover, .spine__head .mini-cover { box-shadow: inset 3px 0 0 rgb(0 0 0 / .16), inset 4px 0 0 rgb(255 255 255 / .14), 2px 3px 0 -1px #e7e4da, 3px 4px 6px -3px rgb(0 0 0 / .35); }

/* ================= Buchstart: „Weiterlesen“-Button – Text exakt mittig =================
   Eine ältere Regel (.book__resume.is-set { display: block }) hob die Button-Zentrierung auf. */
.bookhead__actions .btn.book__resume.is-set { display: inline-flex; align-items: center; justify-content: center; gap: var(--s-1); min-width: 0; max-width: 100%; text-align: center; }
.bookhead__actions .book__resume [data-resume-title] { flex: 0 1 auto; min-width: 0; overflow: hidden; max-width: 26ch; text-overflow: ellipsis; white-space: nowrap; }

/* ================= Blättern: aufgeräumte Karten mit einem Pfeil je Richtung ================= */
.pager { grid-template-columns: 1fr 1fr; gap: var(--s-4); margin-top: var(--s-9); }
.pager a { display: flex; align-items: center; gap: var(--s-4); padding: var(--s-4) var(--s-5); }
.pager__next { justify-content: flex-end; }
.pager__text { display: grid; gap: 2px; min-width: 0; }
.pager__dir { display: block; color: var(--subtle); font: var(--w-semibold) var(--fs-12) / var(--lh-ui) var(--sans); letter-spacing: .02em; }
.pager__title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pager__icon { display: grid; place-items: center; flex: none; width: var(--s-7); height: var(--s-7); border-radius: var(--r-full); background: var(--surface-2); color: var(--muted); transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.pager__icon svg { width: 18px; height: 18px; transition: none; }
.pager a:hover .pager__icon { background: var(--tone); color: #fff; }
.pager__prev:hover .pager__icon { transform: translateX(calc(-1 * var(--s-1))); }
.pager__next:hover .pager__icon { transform: translateX(var(--s-1)); }
.pager__prev:hover svg, .pager__next:hover svg { transform: none; }
.pager__hint { margin: var(--s-3) 0 0; color: var(--subtle); font-size: var(--fs-12); text-align: center; }
.pager__hint kbd { display: inline-block; min-width: 22px; padding: 0 var(--s-1); border: var(--border); border-bottom-width: 2px; border-radius: var(--s-1); color: var(--muted); font: var(--w-semibold) 11px / 18px var(--mono); text-align: center; }
@media (hover: none) { .pager__hint { display: none; } }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager__next { grid-column: 1; } }

/* ================= Lesefortschritt: große Zahl statt kleinem Prozentwert ================= */
.edge { margin-top: var(--s-7); padding-top: var(--s-5); border-top: var(--border); }
.edge__label { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s-4); margin-bottom: var(--s-4); }
.edge__book { display: grid; gap: 2px; color: var(--ink); font-size: var(--fs-14); font-weight: var(--w-semibold); line-height: 1.3; }
.edge__book small { color: var(--subtle); font-size: var(--fs-12); font-weight: var(--w-regular); font-variant-numeric: tabular-nums; }
.edge__pct { display: grid; grid-template-columns: auto auto; grid-template-rows: auto auto; column-gap: 2px; align-items: start; color: var(--tone-deep); }
.edge__pct b { grid-row: 1 / 3; font-size: 40px; font-weight: var(--w-bold); line-height: .9; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.edge__pct span { padding-top: 3px; font-size: var(--fs-16); font-weight: var(--w-bold); line-height: 1; }
.edge__pct small { align-self: end; color: var(--subtle); font: var(--w-semibold) 10px / 1 var(--mono); letter-spacing: .04em; }
@media (prefers-color-scheme: dark) { .edge__pct { color: var(--tone); } }