:root {
    --book-bg: #f8f2f4;
    --book-surface: #fff;
    --book-surface-warm: #efe1e7;
    --book-ink: #332332;
    --book-plum: #5b3156;
    --book-green: #4d9c34;
    --book-muted: #725d6d;
    --book-border: #e3cbd5;
    --book-rose: #b65b77;
    --book-teal: #2b8d83;
    --book-shadow: rgba(51, 35, 50, 0.11);
    --book-space-sm: 0.8rem;
    --book-space-md: 1rem;
    --book-space-lg: 1.5rem;
    --book-radius: 8px;
    --book-serif: Georgia, "Times New Roman", serif;
}

.book-series {
    background: var(--book-bg);
    color: var(--book-ink);
}

.book-series *,
.book-series *::before,
.book-series *::after,
.book-related *,
.book-related *::before,
.book-related *::after {
    box-sizing: border-box;
}

.book-series > .container,
.book-related.container {
    width: min(1120px, calc(100% - 32px));
    margin-inline: auto;
    padding-inline: 0;
}

.book-series__hero {
    padding: clamp(2.5rem, 8vw, 5rem) 0 clamp(1.75rem, 5vw, 3rem);
}

.book-series__kicker,
.book-card__series {
    margin: 0 0 var(--book-space-sm);
    color: var(--book-green);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.book-series__hero h1 {
    max-width: 760px;
    margin: 0;
    color: var(--book-plum);
    font-family: var(--book-serif);
    font-size: clamp(2.25rem, 10vw, 4.8rem);
    line-height: 1;
    overflow-wrap: break-word;
}

.book-series__intro {
    max-width: 680px;
    margin: var(--book-space-lg) 0 0;
    color: var(--book-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

.book-series__grid,
.book-related__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--book-space-lg);
    padding-bottom: clamp(2.5rem, 7vw, 4.5rem);
}

.book-related {
    padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.book-related__head {
    margin-bottom: var(--book-space-lg);
}

.book-related__head h2 {
    margin: 0;
    color: var(--book-plum);
    font-family: var(--book-serif);
    font-size: clamp(1.9rem, 5vw, 3rem);
    line-height: 1.08;
}

.book-card {
    --book-accent: var(--book-plum);
    display: flex;
    min-width: 0;
    min-height: 100%;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--book-border);
    border-radius: var(--book-radius);
    background: var(--book-surface);
    box-shadow: 0 12px 28px var(--book-shadow);
}

.book-card--green {
    --book-accent: var(--book-green);
}

.book-card--plum,
.book-card--default {
    --book-accent: var(--book-plum);
}

.book-card--rose {
    --book-accent: var(--book-rose);
}

.book-card--teal {
    --book-accent: var(--book-teal);
}

.book-card__main-link {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    flex-direction: column;
    color: inherit;
    text-decoration: none;
}

.book-card__main-link:focus-visible,
.book-series .book-btn:focus-visible,
.book-related .book-btn:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--book-accent) 75%, #fff);
    outline-offset: 3px;
}

.book-card__media {
    display: grid;
    min-height: 280px;
    padding: var(--book-space-lg) var(--book-space-lg) 0;
    place-items: end center;
    background: linear-gradient(180deg, var(--book-surface-warm), var(--book-bg));
}

.book-card__media img,
.book-card__placeholder {
    display: block;
    width: min(100%, 188px);
    aspect-ratio: 24 / 34;
    border-radius: 5px 7px 7px 5px;
    box-shadow: 0 16px 28px rgba(51, 35, 50, 0.2);
}

.book-card__media img {
    height: auto;
    object-fit: cover;
}

.book-card__placeholder {
    position: relative;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--book-accent) 70%, #fff);
    background: linear-gradient(90deg, rgba(51, 35, 50, 0.26), transparent 13%), linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent 34%), linear-gradient(135deg, color-mix(in srgb, var(--book-accent) 88%, #fff), color-mix(in srgb, var(--book-accent) 48%, var(--book-surface-warm)));
}

.book-card__placeholder::before,
.book-card__placeholder::after {
    position: absolute;
    content: "";
}

.book-card__placeholder::before {
    inset: 12% 14% auto 20%;
    height: 45%;
    border-top: 3px solid rgba(255, 255, 255, 0.88);
    border-bottom: 3px solid rgba(255, 255, 255, 0.74);
    background: linear-gradient(rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.74)) 0 36% / 72% 3px no-repeat, linear-gradient(rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.58)) 0 56% / 88% 3px no-repeat, linear-gradient(rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.48)) 0 76% / 62% 3px no-repeat;
}

.book-card__placeholder::after {
    inset: auto 14% 13% 20%;
    height: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
}

.book-card__body {
    flex: 1 1 auto;
    min-width: 0;
    padding: var(--book-space-lg);
}

.book-card__body h2,
.book-card__body h3 {
    margin: 0;
    color: var(--book-plum);
    font-family: var(--book-serif);
    font-size: clamp(1.32rem, 5vw, 1.58rem);
    line-height: 1.16;
    overflow-wrap: break-word;
}

.book-card__text {
    margin: var(--book-space-md) 0 0;
    color: var(--book-muted);
    line-height: 1.6;
    overflow-wrap: break-word;
}

.book-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--book-space-sm);
    padding: 0 var(--book-space-lg) var(--book-space-lg);
}

.book-series .book-btn,
.book-related .book-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    min-width: 44px;
    padding: 0.8rem 1rem;
    border-radius: 6px;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.book-series .book-btn--primary,
.book-related .book-btn--primary {
    background: var(--book-accent);
    color: #fff;
}

.book-series .book-btn--secondary,
.book-related .book-btn--secondary {
    border: 2px solid color-mix(in srgb, var(--book-accent) 80%, #fff);
    color: var(--book-accent);
}

.book-series .book-btn:hover,
.book-related .book-btn:hover {
    background: var(--book-ink);
    border-color: var(--book-ink);
    color: #fff;
}

.book-card--compact .book-card__media {
    min-height: 220px;
}

.book-card--compact .book-card__media img,
.book-card--compact .book-card__placeholder {
    width: min(100%, 142px);
}

.book-card--compact .book-card__body h3 {
    font-size: clamp(1.25rem, 5vw, 1.55rem);
}

@media (min-width: 640px) {
    .book-series__grid,
    .book-related__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .book-series__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .book-related__grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media print {
    .book-series,
    .book-related {
        background: #fff;
        color: #000;
    }

    .book-card {
        break-inside: avoid;
        box-shadow: none;
    }

    .book-card__actions {
        display: none;
    }
}