/* HaithaBuch Verlag – gemeinsames responsives Design */
:root {
    --ink: #17212b;
    --muted: #66717d;
    --paper: #f6f3eb;
    --surface: #fffdf8;
    --surface-strong: #ffffff;
    --navy: #142f43;
    --navy-soft: #214e69;
    --teal: #2d7d79;
    --teal-dark: #1f625f;
    --gold: #d7a84b;
    --gold-soft: #f3dfb1;
    --line: rgba(20, 47, 67, 0.14);
    --shadow-sm: 0 10px 28px rgba(20, 47, 67, 0.08);
    --shadow-lg: 0 28px 70px rgba(10, 32, 47, 0.22);
    --radius-sm: 0.8rem;
    --radius: 1.25rem;
    --radius-lg: 2rem;
    --container: 72rem;
    --header-height: 4.75rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    color: var(--ink);
    background:
        radial-gradient(circle at 10% 12%, rgba(215, 168, 75, 0.12), transparent 24rem),
        radial-gradient(circle at 92% 34%, rgba(45, 125, 121, 0.09), transparent 28rem),
        var(--paper);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}
body.modal-open { overflow: hidden; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
a { color: inherit; }
p, h1, h2, h3 { overflow-wrap: break-word; }

.container {
    width: min(calc(100% - 2rem), var(--container));
    margin-inline: auto;
}

.skip-link {
    position: fixed;
    z-index: 1000;
    top: 0.6rem;
    left: 0.6rem;
    transform: translateY(-160%);
    padding: 0.7rem 1rem;
    border-radius: 999px;
    color: #fff;
    background: var(--navy);
}
.skip-link:focus { transform: translateY(0); }

.header {
    position: sticky;
    z-index: 100;
    top: 0;
    color: #fff;
    background: rgba(15, 39, 56, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.11);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.nav {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    text-decoration: none;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.12rem, 2vw, 1.45rem);
    font-weight: 700;
    letter-spacing: 0.01em;
    white-space: nowrap;
}
.logo-mark {
    width: 3.65rem;
    height: 2.72rem;
    flex: 0 0 auto;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.34));
}
.site-nav ul {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.site-nav a {
    display: block;
    padding: 0.65rem 0.85rem;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    font-size: 0.94rem;
    font-weight: 650;
    transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}
.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}
.site-nav a:hover { transform: translateY(-1px); }
.nav-toggle {
    width: 2.8rem;
    aspect-ratio: 1;
    display: none;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.8rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
}
.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
    width: 1.2rem;
    height: 2px;
    display: block;
    border-radius: 2px;
    background: currentColor;
    transition: transform 180ms ease, opacity 180ms ease;
}
.nav-toggle-lines { position: relative; }
.nav-toggle-lines::before,
.nav-toggle-lines::after { content: ""; position: absolute; left: 0; }
.nav-toggle-lines::before { top: -0.38rem; }
.nav-toggle-lines::after { top: 0.38rem; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after { top: 0; transform: rotate(-45deg); }

main { flex: 1; }
.page-main { padding-block: clamp(2.5rem, 6vw, 5.5rem); }
.page-header { max-width: 49rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.eyebrow {
    margin: 0 0 0.65rem;
    color: var(--teal-dark);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.18; }
.page-title,
.hero h1 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    letter-spacing: -0.035em;
}
.page-title { font-size: clamp(2.25rem, 6vw, 4.5rem); }
.page-intro {
    max-width: 44rem;
    margin: 1rem 0 0;
    color: var(--muted);
    font-size: clamp(1rem, 2vw, 1.16rem);
}

.hero {
    position: relative;
    min-height: min(48rem, calc(100svh - var(--header-height)));
    display: grid;
    align-items: center;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(120deg, rgba(15, 44, 62, 0.98), rgba(24, 82, 91, 0.92)),
        var(--navy);
}
.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.hero::before {
    width: min(38rem, 75vw);
    aspect-ratio: 1;
    right: -12rem;
    top: -15rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 0 0 4rem rgba(255, 255, 255, 0.035), 0 0 0 8rem rgba(255, 255, 255, 0.025);
}
.hero::after {
    width: 17rem;
    aspect-ratio: 1;
    left: -8rem;
    bottom: -8rem;
    background: radial-gradient(circle, rgba(215, 168, 75, 0.5), transparent 68%);
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(17rem, 0.75fr);
    align-items: center;
    gap: clamp(2.5rem, 7vw, 7rem);
    padding-block: clamp(4rem, 10vw, 8rem);
}
.hero-copy { max-width: 45rem; }
.hero .eyebrow { color: var(--gold-soft); }
.hero h1 { max-width: 15ch; font-size: clamp(3rem, 7vw, 6rem); }
.hero p { max-width: 38rem; margin: 1.4rem 0 0; color: rgba(255, 255, 255, 0.78); font-size: clamp(1.05rem, 2.2vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.hero-book {
    position: relative;
    width: min(100%, 20.5rem);
    aspect-ratio: 0.84;
    justify-self: center;
    display: grid;
    place-items: center;
    padding: clamp(1.1rem, 3vw, 1.7rem);
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 0.5rem 1.5rem 1.5rem 0.5rem;
    background: linear-gradient(145deg, #f8eac3 0%, #d9aa4d 70%, #c99232 100%);
    color: var(--navy);
    box-shadow: 1.1rem 1.5rem 3.5rem rgba(0, 0, 0, 0.34), inset 0.45rem 0 rgba(255, 255, 255, 0.24);
    transform: rotate(3deg);
}
.hero-book::before {
    content: "";
    position: absolute;
    inset: 1rem;
    border: 1px solid rgba(20, 47, 67, 0.25);
    border-radius: 0.25rem 0.9rem 0.9rem 0.25rem;
}
.hero-book-logo {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 9px 14px rgba(20, 47, 67, 0.2));
}

.btn {
    min-height: 2.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.2rem;
    border: 1px solid transparent;
    border-radius: 999px;
    color: #fff;
    background: var(--teal);
    box-shadow: 0 10px 24px rgba(45, 125, 121, 0.2);
    text-decoration: none;
    font-weight: 750;
    line-height: 1.2;
    cursor: pointer;
    transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.btn:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 14px 30px rgba(45, 125, 121, 0.28); }
.btn:focus-visible { outline: 3px solid rgba(215, 168, 75, 0.5); outline-offset: 3px; }
.btn-secondary { color: #fff; background: rgba(255, 255, 255, 0.09); border-color: rgba(255, 255, 255, 0.25); box-shadow: none; }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.16); }
.btn.small { min-height: 2.55rem; margin-top: 0.7rem; padding: 0.65rem 1rem; font-size: 0.9rem; }

.features { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section-heading { max-width: 45rem; margin-bottom: 2rem; }
.section-heading h2 { margin: 0; font-family: Georgia, serif; font-size: clamp(2rem, 5vw, 3.5rem); }
.section-heading p { margin: 0.8rem 0 0; color: var(--muted); }
.feature-grid,
.buecher_boxen {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1rem, 2.5vw, 1.5rem);
}
.feature,
.buecher_box {
    position: relative;
    min-height: 13rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    padding: clamp(1.25rem, 3vw, 1.8rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.82);
    box-shadow: var(--shadow-sm);
}
.feature::before,
.buecher_box::before {
    content: "";
    position: absolute;
    width: 8rem;
    aspect-ratio: 1;
    top: -4rem;
    right: -3rem;
    border-radius: 50%;
    background: rgba(45, 125, 121, 0.09);
}
.feature-icon,
.card-icon {
    width: 3.25rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin-bottom: auto;
    border-radius: 1rem;
    color: var(--navy);
    background: var(--gold-soft);
    font-size: 1.45rem;
    font-weight: 800;
}
.feature h3,
.buecher_box h3 { margin: 1.4rem 0 0; font-family: Georgia, serif; font-size: 1.4rem; }
.feature p { margin: 0.5rem 0 0; color: var(--muted); }

.buecher_boxen > a {
    display: block;
    color: inherit;
    text-decoration: none;
}
.buecher_box {
    height: 100%;
    min-height: 18rem;
    justify-content: space-between;
    transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.buecher_box:hover {
    transform: translateY(-5px);
    border-color: rgba(45, 125, 121, 0.38);
    box-shadow: 0 20px 42px rgba(20, 47, 67, 0.15);
}
.buecher_box img {
    width: 6.2rem;
    height: 6.2rem;
    object-fit: contain;
    align-self: flex-start;
    filter: drop-shadow(0 9px 12px rgba(20, 47, 67, 0.12));
}
.buecher_box p { margin: 0.55rem 0 0; color: var(--muted); }
.buecher_box .card-arrow { color: var(--teal-dark); font-size: 0.9rem; font-weight: 800; }

.content-card,
.legal-card,
.empty-state {
    padding: clamp(1.4rem, 4vw, 2.5rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}
.content-card { max-width: 52rem; }
.content-card p:first-child { margin-top: 0; }
.content-card p:last-child { margin-bottom: 0; }
.legal-card { max-width: 58rem; }
.legal-card h3 { margin: 2rem 0 0.65rem; font-family: Georgia, serif; font-size: 1.35rem; }
.legal-card h3:first-child { margin-top: 0; }
.legal-card p { margin: 0.75rem 0; }
.empty-state { max-width: 44rem; text-align: center; }
.empty-state-icon { width: 4rem; aspect-ratio: 1; display: grid; place-items: center; margin: 0 auto 1rem; border-radius: 50%; background: var(--gold-soft); font-size: 1.7rem; }
.empty-state h2 { margin: 0; font-family: Georgia, serif; font-size: 2rem; }
.empty-state p { margin: 0.8rem auto 0; color: var(--muted); }

/* Accordion: CSS grid animation avoids fragile calculated max-heights. */
.accordion { display: grid; gap: 0.9rem; }
.accordion-item {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}
.accordion-header,
.nested-header {
    position: relative;
    width: 100%;
    display: block;
    padding: 1.15rem 4rem 1.15rem 1.25rem;
    border: 0;
    color: var(--ink);
    background: transparent;
    text-align: left;
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease;
}
.accordion-header { font-size: clamp(1rem, 2vw, 1.1rem); overflow-wrap: anywhere; }
.accordion-header strong { font-family: Georgia, serif; font-size: 1.08em; }
.accordion-header:hover,
.accordion-header:focus-visible { background: rgba(45, 125, 121, 0.07); }
.js .accordion-header::after,
.js .nested-header::after {
    content: "+";
    position: absolute;
    top: 50%;
    right: 1.25rem;
    width: 2rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--navy);
    background: var(--gold-soft);
    font-size: 1.25rem;
    font-weight: 500;
    transform: translateY(-50%);
    transition: transform 220ms ease, background 220ms ease;
}
.js .accordion-header[aria-expanded="true"]::after,
.js .nested-header[aria-expanded="true"]::after {
    content: "−";
    color: #fff;
    background: var(--teal);
    transform: translateY(-50%) rotate(180deg);
}
.accordion-content,
.nested-content { display: block; }
.js .accordion-content,
.js .nested-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 280ms ease;
}
.js .accordion-content.is-open,
.js .nested-content.is-open { grid-template-rows: 1fr; }
.accordion-inner { min-height: 0; overflow: hidden; }
.accordion-content > .accordion-inner { border-top: 1px solid transparent; transition: border-color 180ms ease; }
.accordion-content.is-open > .accordion-inner { border-top-color: var(--line); }
.accordion-content > .accordion-inner > * { margin-inline: clamp(1rem, 3vw, 1.5rem); }

.book-detail {
    display: grid;
    grid-template-columns: minmax(8.5rem, 10.5rem) minmax(0, 1fr);
    align-items: start;
    gap: clamp(1.2rem, 4vw, 2rem);
    padding-block: clamp(1.25rem, 3vw, 2rem);
}
.book-image {
    width: 100%;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: 0.55rem 1rem 1rem 0.55rem;
    color: var(--muted);
    background: linear-gradient(145deg, #e9e2d4, #c7d3cf);
    box-shadow: 0 14px 30px rgba(20, 47, 67, 0.17);
}
.book-image img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.book-cover-placeholder { padding: 1rem; text-align: center; font-weight: 800; }
.book-info { min-width: 0; }
.book-info p { margin: 0 0 0.65rem; padding: 0; }
.book-info p:has(strong) { margin-bottom: 0.25rem; }
.book-info p:not(:has(strong)) { margin-top: 1rem; color: #35414b; }

.nested-accordion { display: grid; gap: 0.65rem; padding-block: 1.25rem; }
.nested-item { overflow: hidden; border: 1px solid rgba(20, 47, 67, 0.11); border-radius: 0.75rem; background: #f7f8f3; }
.nested-header { padding-block: 0.85rem; font-weight: 700; }
.js .nested-header::after { width: 1.7rem; right: 1rem; font-size: 1rem; }
.nested-content > .accordion-inner { padding: 0 1rem; }
.nested-content.is-open > .accordion-inner { padding-bottom: 1rem; }
audio { width: min(100%, 42rem); display: block; }

.footer {
    margin-top: auto;
    color: rgba(255, 255, 255, 0.78);
    background: #0f2738;
}
.footer-inner {
    min-height: 7rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding-block: 1.5rem;
}
.footer p { margin: 0; }
.footer a { color: #fff; text-decoration: none; }
.footer a:hover { text-decoration: underline; text-underline-offset: 0.25em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; }

/* Discover overlay */
.overlay-trigger {
    position: fixed;
    z-index: 80;
    right: max(1rem, env(safe-area-inset-right));
    bottom: max(1rem, env(safe-area-inset-bottom));
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.78rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    color: #fff;
    background: rgba(20, 47, 67, 0.94);
    box-shadow: 0 15px 35px rgba(10, 32, 47, 0.3);
    backdrop-filter: blur(12px);
    cursor: pointer;
    font-weight: 800;
    transition: transform 180ms ease, background 180ms ease;
}
.overlay-trigger:hover { transform: translateY(-3px); background: var(--teal-dark); }
.overlay-trigger-dot { width: 0.75rem; aspect-ratio: 1; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 0.3rem rgba(215, 168, 75, 0.15); }
.site-overlay {
    width: min(92vw, 52rem);
    max-height: min(88svh, 46rem);
    margin: auto;
    padding: 0;
    overflow: auto;
    border: 0;
    border-radius: var(--radius-lg);
    color: var(--ink);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
}
.site-overlay::backdrop { background: rgba(7, 25, 37, 0.7); backdrop-filter: blur(5px); }
.site-overlay[open] { animation: overlay-in 220ms ease both; }
.overlay-layout { display: grid; grid-template-columns: minmax(13rem, 0.72fr) minmax(0, 1.28fr); }
.overlay-visual {
    position: relative;
    min-height: 26rem;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 2rem;
    color: #fff;
    background: linear-gradient(145deg, var(--navy), var(--teal-dark));
}
.overlay-visual::before,
.overlay-visual::after { content: ""; position: absolute; border-radius: 50%; }
.overlay-visual::before { width: 15rem; aspect-ratio: 1; top: -7rem; right: -7rem; border: 1px solid rgba(255,255,255,.22); box-shadow: 0 0 0 3rem rgba(255,255,255,.035); }
.overlay-visual::after { width: 9rem; aspect-ratio: 1; bottom: -4rem; left: -4rem; background: rgba(215,168,75,.25); }
.overlay-brand-card {
    position: relative;
    z-index: 1;
    width: min(11.5rem, 82%);
    aspect-ratio: 1 / 0.92;
    display: grid;
    place-items: center;
    padding: 1.05rem;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 0.45rem 1.05rem 1.05rem 0.45rem;
    background: linear-gradient(145deg, #f7e8bd, var(--gold));
    box-shadow: 1rem 1.2rem 2.8rem rgba(0, 0, 0, 0.3);
    transform: rotate(-3deg);
}
.overlay-brand-logo {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 0.45rem 0.6rem rgba(20, 47, 67, 0.18));
}
.overlay-content { position: relative; padding: clamp(1.5rem, 5vw, 3rem); }
.overlay-close { position: absolute; top: 1rem; right: 1rem; width: 2.6rem; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 50%; color: var(--ink); background: #fff; cursor: pointer; font-size: 1.3rem; }
.overlay-content h2 { max-width: 100%; overflow-wrap: normal; margin: 0; padding-right: 2.5rem; font-family: Georgia, serif; font-size: clamp(2rem, 5vw, 3rem); }
.overlay-content > p { color: var(--muted); }
.overlay-links { display: grid; gap: 0.65rem; margin-top: 1.4rem; }
.overlay-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1rem; border: 1px solid var(--line); border-radius: 0.85rem; text-decoration: none; font-weight: 750; transition: transform 180ms ease, background 180ms ease; }
.overlay-link:hover { transform: translateX(4px); background: rgba(45, 125, 121, 0.07); }

@keyframes overlay-in { from { opacity: 0; transform: translateY(1rem) scale(0.98); } }

@media (max-width: 860px) {
    .nav { flex-wrap: wrap; }
    .nav-toggle { display: grid; }
    .site-nav { width: 100%; }
    .site-nav ul { align-items: stretch; flex-direction: column; gap: 0.15rem; padding: 0 0 1rem; }
    .site-nav a { border-radius: 0.65rem; }
    .js .site-nav { display: none; }
    .js .site-nav.is-open { display: block; animation: nav-in 160ms ease both; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-copy { text-align: center; margin-inline: auto; }
    .hero h1, .hero p { margin-inline: auto; }
    .hero-actions { justify-content: center; }
    .hero-book { width: min(15.5rem, 62vw); }
    .feature-grid, .buecher_boxen { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .overlay-layout { grid-template-columns: 1fr; }
    .overlay-visual { min-height: 11rem; }
    .overlay-brand-card { width: min(8rem, 68%); padding: 0.72rem; }
}

@keyframes nav-in { from { opacity: 0; transform: translateY(-0.4rem); } }

@media (max-width: 620px) {
    :root { --header-height: 4.3rem; }
    .container { width: min(calc(100% - 1.25rem), var(--container)); }
    .logo-mark { width: 3.1rem; height: 2.32rem; }
    .logo-text { font-size: 1rem; }
    .feature-grid, .buecher_boxen { grid-template-columns: 1fr; }
    .feature, .buecher_box { min-height: 14rem; }
    .book-detail { grid-template-columns: 1fr; }
    .book-image { width: min(10rem, 55vw); justify-self: center; }
    .book-info { text-align: left; }
    .accordion-header { padding-left: 1rem; padding-right: 3.5rem; }
    .footer-inner { align-items: flex-start; flex-direction: column; }
    .overlay-trigger-label { display: none; }
    .overlay-trigger { width: 3.2rem; aspect-ratio: 1; justify-content: center; padding: 0; }
    .site-overlay { width: calc(100vw - 1rem); border-radius: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* Über-uns-Bereich */
.subpage-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 1.35rem;
    color: var(--teal-dark);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 800;
    transition: color 180ms ease, transform 180ms ease;
}
.subpage-back:hover {
    color: var(--navy);
    transform: translateX(-3px);
}
.subpage-back:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.45);
    outline-offset: 0.3rem;
    border-radius: 0.25rem;
}
.subpage-header { margin-bottom: clamp(2rem, 4vw, 3rem); }

.about-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1rem, 2.5vw, 1.5rem);
}
.about-card-grid > a {
    display: block;
    color: inherit;
    text-decoration: none;
}
.about-card {
    position: relative;
    height: 100%;
    min-height: 20rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: clamp(1.35rem, 3vw, 1.9rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.86);
    box-shadow: var(--shadow-sm);
    transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.about-card::before {
    content: "";
    position: absolute;
    width: 10rem;
    aspect-ratio: 1;
    top: -5.5rem;
    right: -4rem;
    border-radius: 50%;
    background: rgba(45, 125, 121, 0.09);
}
.about-card::after {
    content: "";
    position: absolute;
    left: 1.9rem;
    right: 1.9rem;
    bottom: 0;
    height: 0.2rem;
    border-radius: 999px 999px 0 0;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms ease;
}
.about-card-grid > a:hover .about-card,
.about-card-grid > a:focus-visible .about-card {
    transform: translateY(-5px);
    border-color: rgba(45, 125, 121, 0.38);
    box-shadow: 0 20px 42px rgba(20, 47, 67, 0.15);
}
.about-card-grid > a:hover .about-card::after,
.about-card-grid > a:focus-visible .about-card::after {
    transform: scaleX(1);
}
.about-card-grid > a:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.48);
    outline-offset: 0.35rem;
    border-radius: var(--radius);
}
.about-card-icon {
    position: relative;
    z-index: 1;
    width: 3.6rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin-bottom: 2.25rem;
    border-radius: 1.05rem;
    color: var(--navy);
    background: var(--gold-soft);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}
.about-card-kicker {
    margin: 0 0 0.45rem;
    color: var(--teal-dark);
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.about-card h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.5rem, 3vw, 1.9rem);
}
.about-card p:not(.about-card-kicker) {
    margin: 0.65rem 0 0;
    color: var(--muted);
}
.about-card .card-arrow {
    margin-top: 1.8rem;
    color: var(--teal-dark);
    font-size: 0.9rem;
    font-weight: 800;
}

.about-story {
    display: grid;
    grid-template-columns: minmax(0, 1.75fr) minmax(16rem, 0.75fr);
    align-items: start;
    gap: clamp(1.2rem, 4vw, 2rem);
}
.about-story-main,
.about-note,
.owner-intro,
.owner-secondary,
.authors-placeholder {
    border: 1px solid var(--line);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}
.about-story-main {
    padding: clamp(1.5rem, 4vw, 2.7rem);
    border-radius: var(--radius);
}
.about-story-main h2,
.about-note h2,
.about-pillars h2,
.owner-copy h2,
.owner-secondary-copy h2 {
    margin: 2rem 0 0.75rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.55rem, 3vw, 2.15rem);
}
.about-story-main h2:first-of-type { margin-top: 1.7rem; }
.about-story-main p,
.owner-copy p,
.owner-secondary-copy p { color: #35414b; }
.lead-text {
    margin-top: 0;
    color: var(--navy) !important;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.25rem, 2.5vw, 1.65rem);
    line-height: 1.48;
}
.about-note {
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
    padding: clamp(1.35rem, 3vw, 1.8rem);
    border-radius: var(--radius);
    background:
        linear-gradient(145deg, rgba(243, 223, 177, 0.5), rgba(255, 253, 248, 0.95));
}
.about-note h2 { margin-top: 0; font-size: 1.65rem; }
.value-list {
    display: grid;
    gap: 0.85rem;
    margin: 1.4rem 0 0;
    padding: 0;
    list-style: none;
}
.value-list li {
    position: relative;
    padding-left: 1.35rem;
    color: #35414b;
}
.value-list li::before {
    content: "";
    position: absolute;
    top: 0.72em;
    left: 0;
    width: 0.52rem;
    aspect-ratio: 1;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 0 0.24rem rgba(215, 168, 75, 0.16);
}

.about-pillars {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: clamp(1.25rem, 4vw, 2rem);
}
.about-pillars article {
    padding: clamp(1.2rem, 3vw, 1.6rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 253, 248, 0.7);
}
.about-pillars span {
    color: var(--gold);
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: 0.12em;
}
.about-pillars h2 {
    margin: 0.4rem 0 0.45rem;
    font-size: 1.42rem;
}
.about-pillars p {
    margin: 0;
    color: var(--muted);
}

.authors-placeholder {
    min-height: 22rem;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 1rem;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
}
.authors-placeholder-mark {
    width: 4.5rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border-radius: 1.25rem;
    color: var(--navy);
    background: var(--gold-soft);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.65rem;
    font-weight: 800;
}
.authors-placeholder p {
    margin: 0;
    color: var(--muted);
    font-size: 1.05rem;
}

.owner-intro,
.owner-secondary {
    display: grid;
    align-items: stretch;
    overflow: hidden;
    border-radius: var(--radius);
}
.owner-intro {
    grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 1.28fr);
}
.owner-secondary {
    grid-template-columns: minmax(0, 1.35fr) minmax(14rem, 0.65fr);
    margin-top: clamp(1.25rem, 4vw, 2rem);
}
.owner-copy,
.owner-secondary-copy {
    padding: clamp(1.5rem, 4vw, 3rem);
}
.owner-copy h2:first-of-type,
.owner-secondary-copy h2:first-of-type { margin-top: 1.7rem; }
.owner-portrait {
    margin: 0;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: #e8e2d7;
}
.owner-portrait img {
    width: 100%;
    flex: 1;
    min-height: 0;
    object-fit: cover;
}
.owner-portrait-primary img {
    aspect-ratio: 0.83;
    object-position: center 28%;
}
.owner-portrait-secondary img {
    aspect-ratio: 0.86;
    object-position: center;
}
.owner-portrait figcaption {
    padding: 0.8rem 1rem;
    color: rgba(255, 255, 255, 0.82);
    background: var(--navy);
    font-size: 0.82rem;
    line-height: 1.45;
}
.owner-statement {
    margin-top: 2rem;
    padding: 1.2rem 1.3rem;
    border-left: 0.24rem solid var(--gold);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: rgba(243, 223, 177, 0.34);
}
.owner-statement .eyebrow { margin-bottom: 0.35rem; }
.owner-statement p:last-child {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.2rem;
    line-height: 1.5;
}

@media (max-width: 860px) {
    .about-card-grid,
    .about-pillars {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .about-card-grid > a:last-child,
    .about-pillars article:last-child {
        grid-column: 1 / -1;
    }
    .about-story {
        grid-template-columns: 1fr;
    }
    .about-note {
        position: static;
    }
    .owner-intro,
    .owner-secondary {
        grid-template-columns: minmax(13rem, 0.75fr) minmax(0, 1.25fr);
    }
}

@media (max-width: 620px) {
    .about-card-grid,
    .about-pillars,
    .owner-intro,
    .owner-secondary {
        grid-template-columns: 1fr;
    }
    .about-card-grid > a:last-child,
    .about-pillars article:last-child {
        grid-column: auto;
    }
    .about-card { min-height: 16.5rem; }
    .owner-portrait-primary img,
    .owner-portrait-secondary img {
        aspect-ratio: 4 / 3;
        max-height: 25rem;
    }
    .owner-secondary-copy { order: 2; }
    .owner-portrait-secondary { order: 1; }
}

/* Autorenbereich */
.authors-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1rem, 2.5vw, 1.5rem);
}
.author-card {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
    transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.author-card::after {
    content: "";
    position: absolute;
    left: 1.4rem;
    right: 1.4rem;
    bottom: 0;
    height: 0.2rem;
    border-radius: 999px 999px 0 0;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms ease;
}
.authors-grid > a { color: inherit; text-decoration: none; display: block; }
.authors-grid > a:hover .author-card,
.authors-grid > a:focus-visible .author-card {
    transform: translateY(-5px);
    border-color: rgba(45, 125, 121, 0.38);
    box-shadow: 0 20px 42px rgba(20, 47, 67, 0.15);
}
.authors-grid > a:hover .author-card::after,
.authors-grid > a:focus-visible .author-card::after { transform: scaleX(1); }
.authors-grid > a:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.48);
    outline-offset: 0.35rem;
    border-radius: var(--radius);
}
.author-card-media { aspect-ratio: 4 / 3.35; overflow: hidden; background: #d9d4cb; }
.author-card-media img {
    width: 100%; height: 100%; object-fit: cover; object-position: center 22%;
    transition: transform 220ms ease; display: block;
}
.authors-grid > a:hover .author-card-media img,
.authors-grid > a:focus-visible .author-card-media img { transform: scale(1.02); }
.author-card-body { display: flex; flex: 1; flex-direction: column; padding: 1.25rem 1.35rem 1.4rem; }
.author-origin {
    margin: 0 0 0.55rem;
    color: var(--teal-dark);
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.author-card h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.35rem, 3vw, 1.75rem);
}
.author-card-quote {
    margin: 0.8rem 0 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.06rem;
    line-height: 1.55;
}
.author-card-teaser { margin: 0.85rem 0 0; color: var(--muted); }
.author-card-link {
    margin-top: auto;
    padding-top: 1.4rem;
    color: var(--teal-dark);
    font-size: 0.92rem;
    font-weight: 800;
}
.author-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
    gap: clamp(1.25rem, 4vw, 2rem);
    align-items: start;
}
.author-detail-main,
.author-facts,
.author-gallery {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}
.author-detail-main { padding: clamp(1.5rem, 4vw, 2.6rem); }
.author-detail-main h2 {
    margin: 1.85rem 0 0.7rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.45rem, 3vw, 2rem);
}
.author-detail-main h2:first-of-type { margin-top: 1.4rem; }
.author-facts {
    padding: 1.35rem 1.45rem;
    background: linear-gradient(145deg, rgba(243, 223, 177, 0.45), rgba(255, 253, 248, 0.95));
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
}
.author-facts h2 { margin: 0 0 1rem; font-family: Georgia, "Times New Roman", serif; font-size: 1.6rem; }
.author-fact-list { display: grid; gap: 0.9rem; margin: 0; padding: 0; list-style: none; }
.author-fact-list strong { display: block; margin-bottom: 0.18rem; color: var(--navy); font-size: 0.92rem; }
.author-fact-list span { color: #35414b; }
.author-gallery { margin-top: clamp(1.25rem, 4vw, 2rem); padding: clamp(1rem, 3vw, 1.35rem); }
.author-gallery-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.author-gallery figure { margin: 0; overflow: hidden; border-radius: var(--radius-sm); background: #ddd5c8; }
.author-gallery img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; display: block; }
.author-gallery figcaption { padding: 0.75rem 0.9rem 0.9rem; color: var(--muted); font-size: 0.88rem; line-height: 1.45; }

@media (max-width: 860px) {
    .authors-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .authors-grid > a:last-child { grid-column: 1 / -1; }
    .author-detail-layout { grid-template-columns: 1fr; }
    .author-facts { position: static; }
}
@media (max-width: 620px) {
    .authors-grid, .author-gallery-grid { grid-template-columns: 1fr; }
    .authors-grid > a:last-child { grid-column: auto; }
}


/* Organische Einbindung der Autorenporträts */
.author-profile-page {
    overflow: clip;
}

.author-profile-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
    align-items: stretch;
    gap: clamp(1.25rem, 4vw, 2.4rem);
    margin-top: 1.1rem;
    margin-bottom: clamp(1.5rem, 5vw, 3rem);
}

.author-profile-hero::before {
    content: "";
    position: absolute;
    z-index: -1;
    width: 17rem;
    aspect-ratio: 1;
    right: -5rem;
    top: -5rem;
    border-radius: 50%;
    background:
        radial-gradient(circle at center,
            rgba(45, 125, 121, 0.13),
            rgba(45, 125, 121, 0) 70%);
}

.author-profile-intro {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(1.5rem, 4vw, 3rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        linear-gradient(145deg,
            rgba(255, 253, 248, 0.97),
            rgba(243, 223, 177, 0.24));
    box-shadow: var(--shadow-sm);
}

.author-country {
    display: inline-flex;
    align-self: flex-start;
    margin: 0 0 0.7rem;
    padding: 0.38rem 0.7rem;
    border: 1px solid rgba(45, 125, 121, 0.22);
    border-radius: 999px;
    color: var(--teal-dark);
    background: rgba(45, 125, 121, 0.08);
    font-size: 0.76rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.author-profile-intro .page-title {
    margin-bottom: 0.7rem;
}

.author-profile-intro .page-intro {
    max-width: 43rem;
    margin-bottom: 0;
}

.author-profile-quote {
    position: relative;
    margin: clamp(1.35rem, 3vw, 2rem) 0 0;
    padding: 1.1rem 1.2rem 1.1rem 1.45rem;
    border-left: 0.22rem solid var(--gold);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: rgba(255, 255, 255, 0.55);
}

.author-profile-quote p {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.08rem, 2.2vw, 1.3rem);
    line-height: 1.55;
}

.author-profile-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: clamp(1.35rem, 3vw, 2rem) 0 0;
    padding: 0;
    list-style: none;
}

.author-profile-facts li {
    min-width: 0;
    padding: 0.85rem 0.95rem;
    border: 1px solid rgba(20, 47, 67, 0.09);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.54);
}

.author-profile-facts span,
.author-profile-facts strong {
    display: block;
}

.author-profile-facts span {
    margin-bottom: 0.18rem;
    color: var(--teal-dark);
    font-size: 0.68rem;
    font-weight: 850;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.author-profile-facts strong {
    color: #35414b;
    font-size: 0.91rem;
    line-height: 1.4;
}

.author-profile-portrait {
    position: relative;
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    background: #ddd5c8;
    box-shadow: 0 22px 48px rgba(20, 47, 67, 0.17);
}

.author-profile-portrait img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.author-profile-portrait-main {
    min-height: 34rem;
    border-radius: 2.3rem 0.65rem 2.3rem 0.65rem;
    transform: translateY(1.2rem);
}

.author-profile-portrait-main::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 35%;
    pointer-events: none;
    background:
        linear-gradient(to top,
            rgba(11, 31, 44, 0.72),
            rgba(11, 31, 44, 0));
}

.author-profile-portrait-main img {
    object-position: center 23%;
}

.author-profile-portrait-main figcaption {
    position: absolute;
    z-index: 1;
    left: 1.25rem;
    bottom: 1rem;
    color: #fff;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.12rem;
    font-weight: 700;
}

.author-biography {
    display: grid;
    gap: clamp(1.25rem, 4vw, 2rem);
}

.author-biography-opening {
    max-width: 55rem;
    padding: clamp(1.4rem, 4vw, 2.35rem);
    border-left: 0.24rem solid var(--teal);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: rgba(255, 253, 248, 0.72);
}

.author-biography-opening p:last-child {
    margin-bottom: 0;
    color: #35414b;
}

.author-biography-feature {
    display: grid;
    grid-template-columns: minmax(16rem, 0.78fr) minmax(0, 1.22fr);
    align-items: center;
    gap: clamp(1.25rem, 4vw, 2.5rem);
    padding: clamp(1rem, 2vw, 1.35rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        linear-gradient(135deg,
            rgba(20, 47, 67, 0.98),
            rgba(25, 61, 78, 0.96));
    box-shadow: var(--shadow-sm);
}

.author-profile-portrait-secondary {
    align-self: stretch;
    min-height: 28rem;
    border: 0;
    border-radius: 0.55rem 1.8rem 0.55rem 1.8rem;
    box-shadow: none;
}

.author-profile-portrait-secondary img {
    object-position: center 30%;
}

.author-biography-copy {
    padding: clamp(1rem, 3vw, 2rem);
    color: rgba(255, 255, 255, 0.84);
}

.author-biography-copy .eyebrow {
    color: var(--gold);
}

.author-biography-copy h2 {
    margin: 0 0 0.9rem;
    color: #fff;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.7rem, 4vw, 2.55rem);
}

.author-biography-copy p {
    color: rgba(255, 255, 255, 0.81);
}

.author-biography-copy p:last-child {
    margin-bottom: 0;
}

.author-fit-panel {
    display: grid;
    grid-template-columns: minmax(14rem, 0.72fr) minmax(0, 1.28fr);
    gap: clamp(1rem, 4vw, 2.5rem);
    align-items: start;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        linear-gradient(145deg,
            rgba(243, 223, 177, 0.47),
            rgba(255, 253, 248, 0.96));
    box-shadow: var(--shadow-sm);
}

.author-fit-panel h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.55rem, 3vw, 2.2rem);
}

.author-fit-text p {
    margin-top: 0;
    color: #35414b;
}

.author-fit-text p:last-child {
    margin-bottom: 0;
}

@media (max-width: 900px) {
    .author-profile-hero {
        grid-template-columns: minmax(0, 1.1fr) minmax(15rem, 0.9fr);
    }

    .author-profile-facts {
        grid-template-columns: 1fr;
    }

    .author-biography-feature {
        grid-template-columns: minmax(14rem, 0.8fr) minmax(0, 1.2fr);
    }
}

@media (max-width: 720px) {
    .author-profile-hero,
    .author-biography-feature,
    .author-fit-panel {
        grid-template-columns: 1fr;
    }

    .author-profile-portrait-main {
        min-height: auto;
        aspect-ratio: 4 / 5;
        transform: none;
        order: -1;
    }

    .author-profile-intro {
        padding: 1.35rem;
    }

    .author-profile-facts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .author-profile-portrait-secondary {
        min-height: auto;
        aspect-ratio: 4 / 5;
        max-height: 34rem;
    }

    .author-biography-copy {
        padding: 1rem 0.5rem 1.2rem;
    }
}

@media (max-width: 460px) {
    .author-profile-facts {
        grid-template-columns: 1fr;
    }

    .author-profile-portrait-main {
        border-radius: 1.35rem 0.45rem 1.35rem 0.45rem;
    }

    .author-profile-portrait-secondary {
        border-radius: 0.45rem 1.25rem 0.45rem 1.25rem;
    }
}


/* Autorenübersicht mit vier Profilen */
.authors-grid--four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.authors-grid--four > a:last-child {
    grid-column: auto;
}

@media (max-width: 620px) {
    .authors-grid--four {
        grid-template-columns: 1fr;
    }
}


/* Buchübersichten und einzelne Buchseiten */
.book-listing-header {
    margin-bottom: clamp(1.8rem, 4vw, 2.8rem);
}

.book-shelf-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(2rem, 3.4vw, 3.15rem) clamp(1rem, 2.6vw, 2rem);
    align-items: stretch;
}

.book-card-link {
    min-width: 0;
    display: block;
    color: inherit;
    text-decoration: none;
    border-radius: calc(var(--radius) + 0.2rem);
}

.book-card-link:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.52);
    outline-offset: 0.4rem;
}

.book-card {
    position: relative;
    isolation: isolate;
    height: 100%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    transition: transform 220ms ease;
}

.book-card::after {
    content: none;
}

.book-card-link:hover .book-card,
.book-card-link:focus-visible .book-card {
    transform: translateY(-0.42rem);
}

.book-card-cover {
    position: relative;
    z-index: 1;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: stretch center;
    overflow: visible;
    padding: 0;
    border: 0;
    background: transparent;
}

.book-card-cover::before {
    content: "";
    position: absolute;
    z-index: -1;
    left: 14%;
    right: 14%;
    bottom: -0.15rem;
    height: 12%;
    border-radius: 50%;
    background: rgba(20, 47, 67, 0.24);
    filter: blur(0.85rem);
    transform: scaleX(0.84);
    transition: transform 260ms ease, opacity 260ms ease;
}

.book-card-cover img {
    width: calc(100% - clamp(0.35rem, 0.9vw, 0.65rem));
    max-width: none;
    height: 100%;
    justify-self: center;
    object-fit: cover;
    object-position: center;
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    filter: none;
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}

.book-card-link:hover .book-card-cover img,
.book-card-link:focus-visible .book-card-cover img {
    transform: scale(1.032);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}

.book-card-link:hover .book-card-cover::before,
.book-card-link:focus-visible .book-card-cover::before {
    opacity: 0.78;
    transform: scaleX(0.95);
}

.book-card-copy {
    position: relative;
    z-index: 2;
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    margin: -0.82rem 0.16rem 0;
    padding: 1.38rem 1.15rem 1.2rem;
    overflow: hidden;
    border: 1px solid rgba(20, 47, 67, 0.12);
    border-radius: 1.05rem;
    background:
        linear-gradient(145deg,
            rgba(255, 253, 248, 0.82),
            rgba(246, 242, 233, 0.67));
    box-shadow: 0 0.8rem 1.8rem rgba(20, 47, 67, 0.1);
    -webkit-backdrop-filter: blur(0.75rem) saturate(1.05);
    backdrop-filter: blur(0.75rem) saturate(1.05);
    transition:
        border-color 220ms ease,
        background 220ms ease,
        box-shadow 220ms ease;
}

.book-card-copy::before {
    content: "";
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 0;
    height: 0.19rem;
    border-radius: 0 0 999px 999px;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    opacity: 0.75;
    transform: scaleX(0.28);
    transform-origin: center;
    transition: transform 240ms ease, opacity 240ms ease;
}

.book-card-link:hover .book-card-copy,
.book-card-link:focus-visible .book-card-copy {
    border-color: rgba(45, 125, 121, 0.3);
    background:
        linear-gradient(145deg,
            rgba(255, 253, 248, 0.93),
            rgba(244, 241, 232, 0.82));
    box-shadow: 0 1.15rem 2.35rem rgba(20, 47, 67, 0.15);
}

.book-card-link:hover .book-card-copy::before,
.book-card-link:focus-visible .book-card-copy::before {
    opacity: 1;
    transform: scaleX(1);
}

.book-card-title {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.07rem, 1.75vw, 1.28rem);
    line-height: 1.28;
}

.book-card-subtitle {
    margin: 0.58rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.book-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: auto;
    padding-top: 1.05rem;
    color: var(--teal-dark);
    font-size: 0.88rem;
    font-weight: 850;
}

.book-card-cta span {
    transition: transform 180ms ease;
}

.book-card-link:hover .book-card-cta span,
.book-card-link:focus-visible .book-card-cta span {
    transform: translateX(0.24rem);
}

.book-page-hero {
    display: grid;
    grid-template-columns: minmax(14rem, 20rem) minmax(0, 1fr);
    align-items: center;
    gap: clamp(1.5rem, 5vw, 4rem);
    padding: clamp(1.1rem, 3vw, 1.6rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 93% 12%, rgba(45, 125, 121, 0.12), transparent 24rem),
        rgba(255, 253, 248, 0.9);
    box-shadow: var(--shadow-sm);
}

.book-page-cover {
    width: 100%;
    aspect-ratio: 2 / 3;
    margin: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: clamp(0.7rem, 2vw, 1rem);
    border-radius: 0.65rem 1.45rem 1.45rem 0.65rem;
    background: linear-gradient(145deg, #ebe2d1, #cfddd8);
    box-shadow: 0 20px 42px rgba(20, 47, 67, 0.2);
}

.book-page-cover img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 12px 16px rgba(20, 47, 67, 0.17));
}

.book-page-summary {
    min-width: 0;
    padding: clamp(0.4rem, 2vw, 1rem) clamp(0.2rem, 2vw, 1rem);
}

.book-page-summary .page-title {
    font-size: clamp(2rem, 5vw, 4rem);
}

.book-page-subtitle {
    max-width: 46rem;
    margin: 0.9rem 0 0;
    color: var(--muted);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.05rem, 2.1vw, 1.35rem);
    line-height: 1.5;
}

.book-page-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
    margin-top: clamp(1.4rem, 3vw, 2rem);
}

.book-meta-item {
    min-width: 0;
    padding: 0.8rem 0.9rem;
    border: 1px solid rgba(20, 47, 67, 0.11);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.58);
}

.book-meta-item span,
.book-meta-item strong {
    display: block;
}

.book-meta-item span {
    color: var(--teal-dark);
    font-size: 0.69rem;
    font-weight: 850;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.book-meta-item strong {
    margin-top: 0.15rem;
    color: #35414b;
    font-size: 0.92rem;
    line-height: 1.45;
}

.book-page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: clamp(1.4rem, 3vw, 2rem);
}

.btn-light {
    color: var(--navy);
    border-color: rgba(20, 47, 67, 0.18);
    background: var(--gold-soft);
    box-shadow: 0 10px 24px rgba(215, 168, 75, 0.16);
}

.btn-light:hover {
    color: #fff;
    background: var(--teal-dark);
}

.book-page-description {
    max-width: 58rem;
    margin-top: clamp(1.25rem, 4vw, 2rem);
    padding: clamp(1.5rem, 4vw, 2.7rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}

.book-page-description h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.6rem, 3.5vw, 2.35rem);
}

.book-page-description > p:last-child {
    margin: 1rem 0 0;
    color: #35414b;
}

@media (max-width: 1050px) {
    .book-shelf-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .book-shelf-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .book-page-hero {
        grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
        align-items: start;
    }

    .book-page-meta {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 580px) {
    .book-shelf-grid,
    .book-page-hero {
        grid-template-columns: 1fr;
    }

    .book-page-cover {
        width: min(15rem, 76vw);
        justify-self: center;
    }

    .book-page-summary {
        padding: 0.55rem 0.3rem 0.4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .book-card,
    .book-card-cover img,
    .book-card-cover::before,
    .book-card-copy,
    .book-card-copy::before,
    .book-card-cta span {
        transition: none;
    }

    .book-card-link:hover .book-card,
    .book-card-link:focus-visible .book-card,
    .book-card-link:hover .book-card-cover img,
    .book-card-link:focus-visible .book-card-cover img {
        transform: none;
    }
}

/* Passwortgeschützter Bereich: Zusatzmaterialien Polnisch */
.polish-material-header {
    margin-bottom: clamp(1.8rem, 4vw, 2.8rem);
}

.polish-material-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: clamp(1.3rem, 3vw, 2.25rem);
    align-items: stretch;
}

.polish-material-card-link {
    min-width: 0;
    display: block;
    color: inherit;
    text-decoration: none;
    border-radius: var(--radius);
}

.polish-material-card-link:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.55);
    outline-offset: 0.4rem;
}

.polish-material-card {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 220ms ease;
}

.polish-material-card-link:hover .polish-material-card,
.polish-material-card-link:focus-visible .polish-material-card {
    transform: translateY(-0.38rem);
}

.polish-material-cover {
    position: relative;
    isolation: isolate;
    aspect-ratio: 2 / 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    padding: clamp(1rem, 2.7vw, 1.55rem);
    border: 1px solid rgba(20, 47, 67, 0.15);
    border-radius: 0.2rem 0.78rem 0.78rem 0.2rem;
    color: var(--navy);
    text-align: center;
    background:
        linear-gradient(180deg, rgba(255,255,255,.96) 0 48%, rgba(197, 28, 36, .95) 48% 52%, rgba(249, 246, 238, .97) 52% 100%);
    box-shadow:
        0.38rem 0.5rem 0 rgba(20, 47, 67, 0.07),
        0 1.2rem 2.2rem rgba(20, 47, 67, 0.2);
    transform-origin: center bottom;
    transition: transform 260ms ease, box-shadow 260ms ease;
}

.polish-material-cover::before,
.polish-material-cover::after {
    content: "";
    position: absolute;
    z-index: -1;
    border: 1px solid rgba(20, 47, 67, 0.12);
    border-radius: 50%;
}

.polish-material-cover::before {
    width: 10rem;
    aspect-ratio: 1;
    top: -5.2rem;
    right: -4.8rem;
}

.polish-material-cover::after {
    width: 7rem;
    aspect-ratio: 1;
    bottom: -3.8rem;
    left: -3.4rem;
}

.polish-material-card-link:hover .polish-material-cover,
.polish-material-card-link:focus-visible .polish-material-cover {
    transform: scale(1.025);
    box-shadow:
        0.42rem 0.55rem 0 rgba(20, 47, 67, 0.08),
        0 1.55rem 2.65rem rgba(20, 47, 67, 0.27);
}

.polish-material-cover-brand {
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.polish-material-cover-language {
    color: #a91820;
    font-size: clamp(1rem, 2.3vw, 1.28rem);
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.polish-material-cover strong {
    display: block;
    margin-top: 0.45rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.15rem, 5vw, 3.45rem);
    line-height: 1;
}

.polish-material-cover-label {
    margin-top: 0.75rem;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.polish-material-cover-lock {
    position: absolute;
    right: 0.9rem;
    bottom: 0.9rem;
    width: 2.1rem;
    height: 2.1rem;
    display: block;
    overflow: visible;
    border-radius: 50%;
    color: var(--navy);
    background: var(--gold-soft);
    box-shadow: 0 0.45rem 1rem rgba(20, 47, 67, 0.14);
    font-size: 0;
    line-height: 0;
}

.polish-material-cover-lock::before {
    content: "";
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    width: 0.78rem;
    height: 0.64rem;
    box-sizing: border-box;
    border: 0.14rem solid currentColor;
    border-radius: 0.14rem;
    background: var(--gold-soft);
    transform: translate(-50%, -18%);
}

.polish-material-cover-lock::after {
    content: "";
    position: absolute;
    z-index: 1;
    left: 50%;
    top: 0.39rem;
    width: 0.54rem;
    height: 0.58rem;
    box-sizing: border-box;
    border: 0.14rem solid currentColor;
    border-bottom: 0;
    border-radius: 0.55rem 0.55rem 0 0;
    transform: translateX(-50%);
}

.polish-material-card-copy {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    margin: -0.8rem 0.12rem 0;
    padding: 1.35rem 1.15rem 1.2rem;
    border: 1px solid rgba(20, 47, 67, 0.12);
    border-radius: 1rem;
    background: linear-gradient(145deg, rgba(255, 253, 248, 0.93), rgba(246, 242, 233, 0.82));
    box-shadow: 0 0.9rem 1.8rem rgba(20, 47, 67, 0.11);
    backdrop-filter: blur(0.7rem);
}

.polish-material-card-copy::before {
    content: "";
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 0;
    height: 0.19rem;
    border-radius: 0 0 999px 999px;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    transform: scaleX(0.3);
    transition: transform 220ms ease;
}

.polish-material-card-link:hover .polish-material-card-copy::before,
.polish-material-card-link:focus-visible .polish-material-card-copy::before {
    transform: scaleX(1);
}

.polish-material-card-kicker {
    margin: 0 0 0.42rem;
    color: #a91820;
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.polish-material-card-title {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.08rem, 1.8vw, 1.32rem);
    line-height: 1.28;
}

.polish-material-card-subtitle {
    margin: 0.6rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.polish-material-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    margin-top: auto;
    padding-top: 1.05rem;
    color: var(--teal-dark);
    font-size: 0.88rem;
    font-weight: 850;
}

.polish-material-card-cta span {
    transition: transform 180ms ease;
}

.polish-material-card-link:hover .polish-material-card-cta span,
.polish-material-card-link:focus-visible .polish-material-card-cta span {
    transform: translateX(0.25rem);
}

/* Password dialog */
.polish-access-dialog {
    width: min(92vw, 31rem);
    margin: auto;
    padding: 0;
    overflow: visible;
    border: 0;
    border-radius: var(--radius-lg);
    color: var(--ink);
    background: transparent;
}

.polish-access-dialog::backdrop {
    background: rgba(7, 25, 37, 0.74);
    backdrop-filter: blur(0.42rem);
}

.polish-access-dialog[open] {
    animation: overlay-in 200ms ease both;
}

.polish-access-form {
    position: relative;
    padding: clamp(1.5rem, 5vw, 2.4rem);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 100% 0, rgba(45, 125, 121, 0.12), transparent 14rem),
        rgba(255, 253, 248, 0.98);
    box-shadow: var(--shadow-lg);
}

.polish-access-icon {
    width: 4.1rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin-bottom: 1.2rem;
    border-radius: 1.2rem;
    background: linear-gradient(145deg, var(--gold-soft), var(--gold));
    box-shadow: 0 0.85rem 1.8rem rgba(215, 168, 75, 0.2);
}

.polish-access-icon span {
    position: relative;
    width: 1.35rem;
    height: 1.05rem;
    border: 0.18rem solid var(--navy);
    border-radius: 0.18rem;
}

.polish-access-icon span::before {
    content: "";
    position: absolute;
    width: 0.85rem;
    height: 0.8rem;
    left: 50%;
    top: -0.9rem;
    border: 0.18rem solid var(--navy);
    border-bottom: 0;
    border-radius: 0.7rem 0.7rem 0 0;
    transform: translateX(-50%);
}

.polish-access-form h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.7rem, 5vw, 2.35rem);
}

.polish-access-description {
    margin: 0.7rem 0 1.35rem;
    color: var(--muted);
}

.polish-access-label {
    display: block;
    margin-bottom: 0.45rem;
    color: var(--navy);
    font-size: 0.84rem;
    font-weight: 850;
}

.polish-access-input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    overflow: hidden;
    border: 1px solid rgba(20, 47, 67, 0.2);
    border-radius: 0.85rem;
    background: #fff;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.polish-access-input-row:focus-within {
    border-color: var(--teal);
    box-shadow: 0 0 0 0.25rem rgba(45, 125, 121, 0.12);
}

.polish-access-input {
    min-width: 0;
    padding: 0.88rem 0.95rem;
    border: 0;
    outline: 0;
    color: var(--navy);
    background: transparent;
    font: inherit;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.polish-access-reveal {
    padding: 0.7rem 0.9rem;
    border: 0;
    border-left: 1px solid rgba(20, 47, 67, 0.12);
    color: var(--teal-dark);
    background: rgba(45, 125, 121, 0.06);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 850;
}

.polish-access-hint {
    margin: 0.5rem 0 0;
    color: var(--muted);
    font-size: 0.76rem;
}

.polish-access-error {
    min-height: 1.35rem;
    margin: 0.65rem 0 0;
    color: #a91820;
    font-size: 0.82rem;
    font-weight: 750;
}

.polish-access-actions {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 0.6rem;
}

.polish-access-actions .btn {
    min-height: 2.8rem;
}

/* Unlocked Polish detail pages */
.polish-material-detail-page.is-access-locked main {
    visibility: hidden;
}

.polish-material-detail-hero {
    display: grid;
    grid-template-columns: minmax(13rem, 18rem) minmax(0, 1fr);
    align-items: center;
    gap: clamp(1.5rem, 5vw, 4rem);
    padding: clamp(1.15rem, 3vw, 1.65rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 94% 10%, rgba(197, 28, 36, 0.08), transparent 22rem),
        rgba(255, 253, 248, 0.91);
    box-shadow: var(--shadow-sm);
}

.polish-material-cover--large {
    width: 100%;
}

.polish-material-detail-summary {
    min-width: 0;
    padding: clamp(0.3rem, 2vw, 1rem);
}

.polish-material-detail-summary .page-title {
    font-size: clamp(2rem, 5vw, 4rem);
}

.polish-material-access-note {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    max-width: 34rem;
    margin-top: 1.35rem;
    padding: 0.8rem 0.95rem;
    border: 1px solid rgba(45, 125, 121, 0.18);
    border-radius: var(--radius-sm);
    color: var(--teal-dark);
    background: rgba(45, 125, 121, 0.07);
}

.polish-material-access-note span {
    width: 1.55rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 50%;
    color: #fff;
    background: var(--teal);
    font-weight: 900;
}

.polish-material-access-note p {
    margin: 0;
    font-size: 0.85rem;
    font-weight: 700;
}

.polish-material-content {
    max-width: 58rem;
    margin-top: clamp(1.25rem, 4vw, 2rem);
    padding: clamp(1.5rem, 4vw, 2.7rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}

.polish-material-content h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.6rem, 3.5vw, 2.35rem);
}

.polish-material-content > p:last-child {
    margin: 1rem 0 0;
    color: #35414b;
}

.polish-noscript-notice {
    margin-top: 2rem;
    padding: 1rem;
    border: 1px solid #a91820;
    border-radius: var(--radius-sm);
    color: #771017;
    background: #fff0f0;
}

@media (max-width: 1250px) {
    .polish-material-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 1050px) {
    .polish-material-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .polish-material-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .polish-material-detail-hero {
        grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
        align-items: start;
    }
}

@media (max-width: 580px) {
    .polish-material-grid,
    .polish-material-detail-hero {
        grid-template-columns: 1fr;
    }

    .polish-material-cover--large {
        width: min(15rem, 76vw);
        justify-self: center;
    }

    .polish-access-actions {
        flex-direction: column-reverse;
    }

    .polish-access-actions .btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .polish-material-card,
    .polish-material-cover,
    .polish-material-card-copy::before,
    .polish-material-card-cta span {
        transition: none;
    }

    .polish-material-card-link:hover .polish-material-card,
    .polish-material-card-link:focus-visible .polish-material-card,
    .polish-material-card-link:hover .polish-material-cover,
    .polish-material-card-link:focus-visible .polish-material-cover {
        transform: none;
    }
}

/* Platzhalter-Cover für kommende polnische Sprachbücher */
.book-card-cover--placeholder {
    place-items: stretch center;
}

.placeholder-book-cover {
    position: relative;
    width: calc(100% - clamp(0.35rem, 0.9vw, 0.65rem));
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: clamp(1rem, 2.6vw, 1.5rem);
    border: 1px solid rgba(20, 47, 67, 0.14);
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    color: var(--navy);
    text-align: center;
    background:
        linear-gradient(180deg,
            rgba(255,255,255,.98) 0 47%,
            rgba(197, 28, 36, .95) 47% 53%,
            rgba(249, 246, 238, .98) 53% 100%);
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}

.placeholder-book-cover::before,
.placeholder-book-cover::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(20, 47, 67, 0.11);
    border-radius: 50%;
}
.placeholder-book-cover::before {
    width: 9rem;
    aspect-ratio: 1;
    top: -4.7rem;
    right: -4.4rem;
}
.placeholder-book-cover::after {
    width: 6rem;
    aspect-ratio: 1;
    bottom: -3.2rem;
    left: -2.8rem;
}

.placeholder-book-brand {
    position: absolute;
    top: 0.9rem;
    left: 0.9rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.07em;
}
.placeholder-book-language {
    color: #a91820;
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.placeholder-book-cover strong {
    margin-top: 0.42rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    line-height: 1;
}
.placeholder-book-cover small {
    margin-top: 0.75rem;
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 850;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.book-card-link:hover .placeholder-book-cover,
.book-card-link:focus-visible .placeholder-book-cover {
    transform: scale(1.032);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}

.book-page-cover--placeholder {
    padding: 0;
    overflow: visible;
    background: transparent;
    box-shadow: none;
}
.placeholder-book-cover--large {
    width: 100%;
    min-height: 100%;
    box-shadow: 0 20px 42px rgba(20, 47, 67, 0.2);
}

/* MP3-Platzhalter auf den polnischen Zusatzseiten */
.material-audio-intro {
    margin: 0.9rem 0 0;
    color: #35414b;
}
.polish-audio-placeholder-list {
    margin-top: 1rem;
}
.audio-placeholder-note {
    margin: 0.55rem 0 0;
    color: var(--muted);
    font-size: 0.84rem;
}

/* Frei zugängliche Zusatzmaterialien Russisch */
.russian-material-header {
    margin-bottom: clamp(1.8rem, 4vw, 2.8rem);
}
.russian-material-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1.3rem, 3vw, 2.25rem);
    align-items: stretch;
}
.russian-material-card-link {
    min-width: 0;
    display: block;
    color: inherit;
    text-decoration: none;
    border-radius: var(--radius);
}
.russian-material-card-link:focus-visible {
    outline: 3px solid rgba(215, 168, 75, 0.55);
    outline-offset: 0.4rem;
}
.russian-material-card {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 220ms ease;
}
.russian-material-card-link:hover .russian-material-card,
.russian-material-card-link:focus-visible .russian-material-card {
    transform: translateY(-0.38rem);
}
.russian-material-cover {
    position: relative;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: stretch center;
    overflow: visible;
    background: transparent;
}
.russian-material-cover::before {
    content: "";
    position: absolute;
    z-index: -1;
    left: 14%;
    right: 14%;
    bottom: -0.15rem;
    height: 12%;
    border-radius: 50%;
    background: rgba(20, 47, 67, 0.24);
    filter: blur(0.85rem);
}
.russian-material-cover img {
    width: calc(100% - clamp(0.35rem, 0.9vw, 0.65rem));
    height: 100%;
    justify-self: center;
    object-fit: cover;
    object-position: center;
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}
.russian-material-card-link:hover .russian-material-cover img,
.russian-material-card-link:focus-visible .russian-material-cover img {
    transform: scale(1.025);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}
.russian-material-card-copy {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    margin: -0.8rem 0.12rem 0;
    padding: 1.35rem 1.15rem 1.2rem;
    border: 1px solid rgba(20, 47, 67, 0.12);
    border-radius: 1rem;
    background: linear-gradient(145deg, rgba(255, 253, 248, 0.93), rgba(246, 242, 233, 0.82));
    box-shadow: 0 0.9rem 1.8rem rgba(20, 47, 67, 0.11);
    backdrop-filter: blur(0.7rem);
}
.russian-material-card-copy::before {
    content: "";
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 0;
    height: 0.19rem;
    border-radius: 0 0 999px 999px;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    transform: scaleX(0.3);
    transition: transform 220ms ease;
}
.russian-material-card-link:hover .russian-material-card-copy::before,
.russian-material-card-link:focus-visible .russian-material-card-copy::before {
    transform: scaleX(1);
}
.russian-material-card-kicker {
    margin: 0 0 0.42rem;
    color: var(--teal-dark);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}
.russian-material-card-title {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.08rem, 1.8vw, 1.32rem);
    line-height: 1.28;
}
.russian-material-card-subtitle {
    margin: 0.6rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.5;
}
.russian-material-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    margin-top: auto;
    padding-top: 1.05rem;
    color: var(--teal-dark);
    font-size: 0.88rem;
    font-weight: 850;
}
.russian-material-card-cta span {
    transition: transform 180ms ease;
}
.russian-material-card-link:hover .russian-material-card-cta span,
.russian-material-card-link:focus-visible .russian-material-card-cta span {
    transform: translateX(0.25rem);
}

.russian-material-detail-hero {
    display: grid;
    grid-template-columns: minmax(13rem, 18rem) minmax(0, 1fr);
    align-items: center;
    gap: clamp(1.5rem, 5vw, 4rem);
    padding: clamp(1.15rem, 3vw, 1.65rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 94% 10%, rgba(45, 125, 121, 0.11), transparent 22rem),
        rgba(255, 253, 248, 0.91);
    box-shadow: var(--shadow-sm);
}
.russian-material-detail-cover {
    width: 100%;
    aspect-ratio: 2 / 3;
    margin: 0;
    overflow: hidden;
    border-radius: 0.2rem 0.78rem 0.78rem 0.2rem;
    box-shadow: 0 1.2rem 2.2rem rgba(20, 47, 67, 0.2);
}
.russian-material-detail-cover img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}
.russian-material-detail-summary {
    min-width: 0;
    padding: clamp(0.3rem, 2vw, 1rem);
}
.russian-material-detail-summary .page-title {
    font-size: clamp(2rem, 5vw, 4rem);
}
.russian-material-access-note {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    max-width: 34rem;
    margin-top: 1.35rem;
    padding: 0.8rem 0.95rem;
    border: 1px solid rgba(45, 125, 121, 0.18);
    border-radius: var(--radius-sm);
    color: var(--teal-dark);
    background: rgba(45, 125, 121, 0.07);
}
.russian-material-access-note span {
    width: 1.55rem;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 50%;
    color: #fff;
    background: var(--teal);
    font-weight: 900;
}
.russian-material-access-note p {
    margin: 0;
    font-size: 0.85rem;
    font-weight: 700;
}
.russian-material-content {
    max-width: 58rem;
    margin-top: clamp(1.25rem, 4vw, 2rem);
    padding: clamp(1.5rem, 4vw, 2.7rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, 0.88);
    box-shadow: var(--shadow-sm);
}
.russian-material-content h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.6rem, 3.5vw, 2.35rem);
}

@media (max-width: 800px) {
    .russian-material-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .russian-material-detail-hero {
        grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
        align-items: start;
    }
}
@media (max-width: 580px) {
    .russian-material-grid,
    .russian-material-detail-hero {
        grid-template-columns: 1fr;
    }
    .russian-material-detail-cover {
        width: min(15rem, 76vw);
        justify-self: center;
    }
}
@media (prefers-reduced-motion: reduce) {
    .placeholder-book-cover,
    .russian-material-card,
    .russian-material-cover img,
    .russian-material-card-copy::before,
    .russian-material-card-cta span {
        transition: none;
    }
    .book-card-link:hover .placeholder-book-cover,
    .book-card-link:focus-visible .placeholder-book-cover,
    .russian-material-card-link:hover .russian-material-card,
    .russian-material-card-link:focus-visible .russian-material-card,
    .russian-material-card-link:hover .russian-material-cover img,
    .russian-material-card-link:focus-visible .russian-material-cover img {
        transform: none;
    }
}

/* Einheitliches 4er-Kartenraster für Zusatzmaterialien
   – optisch identisch mit den Buchübersichten */
.polish-material-grid,
.russian-material-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(2rem, 3.4vw, 3.15rem) clamp(1rem, 2.6vw, 2rem);
    align-items: stretch;
}

.polish-material-card-link,
.russian-material-card-link {
    border-radius: calc(var(--radius) + 0.2rem);
}

.polish-material-card,
.russian-material-card {
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    transition: transform 220ms ease;
}

.polish-material-card-link:hover .polish-material-card,
.polish-material-card-link:focus-visible .polish-material-card,
.russian-material-card-link:hover .russian-material-card,
.russian-material-card-link:focus-visible .russian-material-card {
    transform: translateY(-0.42rem);
}

/* Russisch verwendet echte Cover und übernimmt das Buchkarten-Verhalten 1:1 */
.russian-material-cover {
    position: relative;
    z-index: 1;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: stretch center;
    overflow: visible;
    padding: 0;
    border: 0;
    background: transparent;
}

.russian-material-cover::before {
    content: "";
    position: absolute;
    z-index: -1;
    left: 14%;
    right: 14%;
    bottom: -0.15rem;
    height: 12%;
    border-radius: 50%;
    background: rgba(20, 47, 67, 0.24);
    filter: blur(0.85rem);
    transform: scaleX(0.84);
    transition: transform 260ms ease, opacity 260ms ease;
}

.russian-material-cover img {
    width: calc(100% - clamp(0.35rem, 0.9vw, 0.65rem));
    max-width: none;
    height: 100%;
    justify-self: center;
    object-fit: cover;
    object-position: center;
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}

.russian-material-card-link:hover .russian-material-cover img,
.russian-material-card-link:focus-visible .russian-material-cover img {
    transform: scale(1.032);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}

.russian-material-card-link:hover .russian-material-cover::before,
.russian-material-card-link:focus-visible .russian-material-cover::before {
    opacity: 0.78;
    transform: scaleX(0.95);
}

/* Polnisch behält das grafische Platzhalter-Cover, sitzt aber im selben
   freien Cover-Rahmen wie eine normale Buchkarte. */
.polish-material-cover-stage {
    position: relative;
    z-index: 1;
}

.polish-material-cover {
    width: calc(100% - clamp(0.35rem, 0.9vw, 0.65rem));
    height: 100%;
    align-self: stretch;
    justify-self: center;
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}

.polish-material-card-link:hover .polish-material-cover,
.polish-material-card-link:focus-visible .polish-material-cover {
    transform: scale(1.032);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}

/* Die Textflächen beider Zusatzbereiche entsprechen den normalen Buchkarten. */
.polish-material-card-copy,
.russian-material-card-copy {
    position: relative;
    z-index: 2;
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    margin: -0.82rem 0.16rem 0;
    padding: 1.38rem 1.15rem 1.2rem;
    overflow: hidden;
    border: 1px solid rgba(20, 47, 67, 0.12);
    border-radius: 1.05rem;
    background:
        linear-gradient(145deg,
            rgba(255, 253, 248, 0.82),
            rgba(246, 242, 233, 0.67));
    box-shadow: 0 0.8rem 1.8rem rgba(20, 47, 67, 0.1);
    -webkit-backdrop-filter: blur(0.75rem) saturate(1.05);
    backdrop-filter: blur(0.75rem) saturate(1.05);
    transition:
        border-color 220ms ease,
        background 220ms ease,
        box-shadow 220ms ease;
}

.polish-material-card-copy::before,
.russian-material-card-copy::before {
    content: "";
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 0;
    height: 0.19rem;
    border-radius: 0 0 999px 999px;
    background: linear-gradient(90deg, var(--gold), var(--teal));
    opacity: 0.75;
    transform: scaleX(0.28);
    transform-origin: center;
    transition: transform 240ms ease, opacity 240ms ease;
}

.polish-material-card-link:hover .polish-material-card-copy,
.polish-material-card-link:focus-visible .polish-material-card-copy,
.russian-material-card-link:hover .russian-material-card-copy,
.russian-material-card-link:focus-visible .russian-material-card-copy {
    border-color: rgba(45, 125, 121, 0.3);
    background:
        linear-gradient(145deg,
            rgba(255, 253, 248, 0.93),
            rgba(244, 241, 232, 0.82));
    box-shadow: 0 1.15rem 2.35rem rgba(20, 47, 67, 0.15);
}

.polish-material-card-link:hover .polish-material-card-copy::before,
.polish-material-card-link:focus-visible .polish-material-card-copy::before,
.russian-material-card-link:hover .russian-material-card-copy::before,
.russian-material-card-link:focus-visible .russian-material-card-copy::before {
    opacity: 1;
    transform: scaleX(1);
}

.polish-material-card-title,
.russian-material-card-title {
    margin: 0;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.07rem, 1.75vw, 1.28rem);
    line-height: 1.28;
}

.polish-material-card-subtitle,
.russian-material-card-subtitle {
    margin: 0.58rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.polish-material-card-cta,
.russian-material-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: auto;
    padding-top: 1.05rem;
    color: var(--teal-dark);
    font-size: 0.88rem;
    font-weight: 850;
}

.polish-material-card-cta span,
.russian-material-card-cta span {
    transition: transform 180ms ease;
}

.polish-material-card-link:hover .polish-material-card-cta span,
.polish-material-card-link:focus-visible .polish-material-card-cta span,
.russian-material-card-link:hover .russian-material-card-cta span,
.russian-material-card-link:focus-visible .russian-material-card-cta span {
    transform: translateX(0.24rem);
}

/* Ukrainisch: Flagge ohne zusätzliche Bilddatei. */
.buecher_box .language-flag {
    width: 6.2rem;
    height: 6.2rem;
    align-self: flex-start;
    overflow: hidden;
    border-radius: 0.55rem;
    box-shadow: 0 9px 18px rgba(20, 47, 67, 0.12);
}

.language-flag--ukraine {
    background: linear-gradient(
        to bottom,
        #0057b7 0 50%,
        #ffd700 50% 100%
    );
}

@media (max-width: 1050px) {
    .polish-material-grid,
    .russian-material-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .polish-material-grid,
    .russian-material-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 580px) {
    .polish-material-grid,
    .russian-material-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .polish-material-cover,
    .russian-material-cover img,
    .polish-material-card-copy,
    .russian-material-card-copy {
        transition: none;
    }
}

/* Mobile Kartenraster: auf Themenseiten, Sprachseiten und
   Zusatzmaterial-Seiten immer zwei Kacheln pro Reihe. */
@media (max-width: 580px) {
    .book-shelf-grid,
    .polish-material-grid,
    .russian-material-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 0.7rem;
        row-gap: 1.55rem;
    }

    /* Kompaktere Textflächen, damit zwei Karten auch auf schmalen
       Smartphones sauber nebeneinander funktionieren. */
    .book-card-copy,
    .polish-material-card-copy,
    .russian-material-card-copy {
        margin-top: -0.58rem;
        padding: 0.95rem 0.72rem 0.82rem;
        border-radius: 0.82rem;
    }

    .book-card-copy::before,
    .polish-material-card-copy::before,
    .russian-material-card-copy::before {
        left: 0.65rem;
        right: 0.65rem;
    }

    .book-card-title,
    .polish-material-card-title,
    .russian-material-card-title {
        font-size: clamp(0.92rem, 4vw, 1.03rem);
        line-height: 1.24;
        overflow-wrap: anywhere;
        hyphens: auto;
    }

    .book-card-subtitle,
    .polish-material-card-subtitle,
    .russian-material-card-subtitle {
        margin-top: 0.45rem;
        font-size: clamp(0.75rem, 3.25vw, 0.84rem);
        line-height: 1.4;
        overflow-wrap: anywhere;
        hyphens: auto;
    }

    .book-card-cta,
    .polish-material-card-cta,
    .russian-material-card-cta {
        gap: 0.28rem;
        padding-top: 0.75rem;
        font-size: clamp(0.75rem, 3.2vw, 0.82rem);
    }

    /* Schatten etwas reduzieren, damit sich benachbarte Cover nicht
       optisch gegenseitig überlagern. */
    .book-card-cover img,
    .russian-material-cover img,
    .polish-material-cover {
        box-shadow:
            0.22rem 0.28rem 0 rgba(20, 47, 67, 0.06),
            0 0.7rem 1.25rem rgba(20, 47, 67, 0.18);
    }

    /* Buchdetailseiten bleiben weiterhin einspaltig – nur Übersichten
       werden zweispaltig. */
    .book-page-hero {
        grid-template-columns: 1fr;
    }
}

/* Sehr schmale Geräte bleiben ebenfalls zweispaltig. Die Abstände
   werden nur noch einmal leicht reduziert. */
@media (max-width: 390px) {
    .book-shelf-grid,
    .polish-material-grid,
    .russian-material-grid {
        column-gap: 0.52rem;
        row-gap: 1.25rem;
    }

    .book-card-copy,
    .polish-material-card-copy,
    .russian-material-card-copy {
        padding: 0.82rem 0.58rem 0.72rem;
    }

    .book-card-title,
    .polish-material-card-title,
    .russian-material-card-title {
        font-size: 0.88rem;
    }

    .book-card-subtitle,
    .polish-material-card-subtitle,
    .russian-material-card-subtitle,
    .book-card-cta,
    .polish-material-card-cta,
    .russian-material-card-cta {
        font-size: 0.72rem;
    }
}

/* Polnische Sprachbücher: reale Cover exakt zentrieren.
   Die vorhandenen Cover liegen nahezu im Verhältnis 7:10. */
.polish-book-listing-page .book-card-cover {
    aspect-ratio: 7 / 10;
    place-items: stretch;
}

.polish-book-listing-page .book-card-cover img {
    width: 100%;
    max-width: 100%;
    height: 100%;
    justify-self: stretch;
    object-fit: cover;
    object-position: center center;
    margin: 0;
}

/* Zusatzmaterial Polnisch: reale Cover mit Schloss-Overlay. */
.polish-material-cover-stage {
    aspect-ratio: 7 / 10;
    display: grid;
    place-items: stretch;
}

.polish-material-cover-image {
    width: 100%;
    max-width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    border-radius: 0.15rem 0.52rem 0.52rem 0.15rem;
    box-shadow:
        0.35rem 0.45rem 0 rgba(20, 47, 67, 0.07),
        0 1.1rem 1.9rem rgba(20, 47, 67, 0.22);
    transform-origin: center bottom;
    transition: transform 280ms ease, box-shadow 280ms ease;
}

.polish-material-card-link:hover .polish-material-cover-image,
.polish-material-card-link:focus-visible .polish-material-cover-image {
    transform: scale(1.032);
    box-shadow:
        0.42rem 0.52rem 0 rgba(20, 47, 67, 0.08),
        0 1.45rem 2.3rem rgba(20, 47, 67, 0.28);
}

.polish-material-cover-stage .polish-material-cover-lock {
    z-index: 4;
    right: 0.72rem;
    bottom: 0.72rem;
}

/* Echte Buchcover auf den freigeschalteten Polnisch-Zusatzseiten. */
.polish-material-detail-book-cover {
    margin: 0;
    align-self: stretch;
    overflow: hidden;
    border-radius: 0.35rem 1rem 1rem 0.35rem;
    background: transparent;
    box-shadow:
        0.42rem 0.55rem 0 rgba(20, 47, 67, 0.07),
        0 1.25rem 2.4rem rgba(20, 47, 67, 0.2);
}

.polish-material-detail-book-cover img {
    width: 100%;
    height: 100%;
    min-height: 0;
    display: block;
    object-fit: cover;
    object-position: center;
}

@media (max-width: 580px) {
    .polish-material-cover-image {
        box-shadow:
            0.22rem 0.28rem 0 rgba(20, 47, 67, 0.06),
            0 0.7rem 1.25rem rgba(20, 47, 67, 0.18);
    }

    .polish-material-detail-book-cover {
        width: min(100%, 16rem);
        justify-self: center;
        aspect-ratio: 7 / 10;
    }
}

@media (prefers-reduced-motion: reduce) {
    .polish-material-cover-image {
        transition: none;
    }
}

/* ================================================================
   Einheitliches Schatten-System für Buch- und Zusatzmaterialkarten
   ================================================================
   Es gibt bewusst nur noch EINEN Schatten auf dem gemeinsamen
   Karten-Wrapper. Cover und Textbereich erzeugen keine eigenen
   Schatten mehr. Dadurch kann kein Cover-Schatten in den Titelbereich
   hineinragen oder seitlich als "zweiter Rand" erscheinen.
*/
.book-card,
.polish-material-card,
.russian-material-card {
    box-shadow: none !important;
    filter: drop-shadow(0 0.72rem 1rem rgba(20, 47, 67, 0.16));
    transition:
        transform 220ms ease,
        filter 220ms ease;
}

.book-card-link:hover .book-card,
.book-card-link:focus-visible .book-card,
.polish-material-card-link:hover .polish-material-card,
.polish-material-card-link:focus-visible .polish-material-card,
.russian-material-card-link:hover .russian-material-card,
.russian-material-card-link:focus-visible .russian-material-card {
    filter: drop-shadow(0 1rem 1.35rem rgba(20, 47, 67, 0.22));
}

/* Alte simulierte Bodenschatten unter Covern vollständig deaktivieren. */
.book-card-cover::before,
.russian-material-cover::before {
    display: none !important;
}

/* Kinder der Karte dürfen selbst keinen zweiten Schatten werfen. */
.book-card-cover img,
.placeholder-book-cover,
.polish-material-cover,
.polish-material-cover-image,
.russian-material-cover img,
.book-card-copy,
.polish-material-card-copy,
.russian-material-card-copy {
    box-shadow: none !important;
}

/* Auch Hover darf keinen separaten Kind-Schatten zurückbringen. */
.book-card-link:hover .book-card-cover img,
.book-card-link:focus-visible .book-card-cover img,
.book-card-link:hover .placeholder-book-cover,
.book-card-link:focus-visible .placeholder-book-cover,
.polish-material-card-link:hover .polish-material-cover,
.polish-material-card-link:focus-visible .polish-material-cover,
.polish-material-card-link:hover .polish-material-cover-image,
.polish-material-card-link:focus-visible .polish-material-cover-image,
.russian-material-card-link:hover .russian-material-cover img,
.russian-material-card-link:focus-visible .russian-material-cover img,
.book-card-link:hover .book-card-copy,
.book-card-link:focus-visible .book-card-copy,
.polish-material-card-link:hover .polish-material-card-copy,
.polish-material-card-link:focus-visible .polish-material-card-copy,
.russian-material-card-link:hover .russian-material-card-copy,
.russian-material-card-link:focus-visible .russian-material-card-copy {
    box-shadow: none !important;
}

/* Polnische Cover explizit geometrisch zentrieren.
   Der vorher sichtbare rechte "Rand" war hauptsächlich der versetzte
   Cover-Schatten; dieser ist oben entfernt. */
.polish-book-listing-page .book-card-cover {
    display: grid;
    place-items: stretch center;
    padding: 0;
}

.polish-book-listing-page .book-card-cover img {
    width: 100%;
    max-width: 100%;
    height: 100%;
    justify-self: center;
    margin-inline: auto;
    object-fit: cover;
    object-position: 50% 50%;
}

/* Das Gleiche gilt für die Polnisch-Zusatzmaterialcover. */
.polish-material-cover-stage {
    place-items: stretch center;
}

.polish-material-cover-image {
    justify-self: center;
    margin-inline: auto;
}

@media (prefers-reduced-motion: reduce) {
    .book-card,
    .polish-material-card,
    .russian-material-card {
        transition: none;
    }
}

/* ================================================================
   Vollständig deckende Textflächen der Buch- und Zusatzmaterialkarten
   ================================================================ */
.book-card-copy,
.polish-material-card-copy,
.russian-material-card-copy {
    background: #ffffff !important;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
}

.book-card-link:hover .book-card-copy,
.book-card-link:focus-visible .book-card-copy,
.polish-material-card-link:hover .polish-material-card-copy,
.polish-material-card-link:focus-visible .polish-material-card-copy,
.russian-material-card-link:hover .russian-material-card-copy,
.russian-material-card-link:focus-visible .russian-material-card-copy {
    background: #ffffff !important;
}

/* Mehrere Absätze in "Über das Buch" sauber lesbar staffeln. */
.book-page-description > p:not(.eyebrow) {
    max-width: 76ch;
    color: #35414b;
    line-height: 1.75;
}

.book-page-description > p:not(.eyebrow) + p {
    margin-top: 1rem;
}