.page-books, .page-book { background: #fff; }

/* ─── Listing page ─────────────────────────────────────────────────── */

.books-page {
    max-width: var(--container);
    margin: 0 auto;
    padding: 2rem 2rem 4rem;
}

.books-header { text-align: center; margin-bottom: 3rem; }

.books-heading {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.books-empty {
    padding: 4rem 1rem;
    text-align: center;
    color: #999;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2.5rem 1.5rem;
}

/* ─── Book card (shared by carousel + grid) ────────────────────────── */

.book-card {
    display: flex;
    flex-direction: column;
}

.card-carousel-track .book-card {
    /* same sizing rules as .perf-card in carousels */
    flex: 0 0 calc((100% - 4rem) / 5);
    scroll-snap-align: start;
}

.book-card-link {
    display: flex;
    flex-direction: column;
    color: #000;
    text-decoration: none;
    flex: 1;
}

.book-card-cover {
    width: 100%;
    overflow: hidden;
}

/* Covers vary in aspect ratio — show each one at its natural proportions
   instead of cropping to a fixed box. */
.book-card-cover-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s;
}

.book-card-link:hover .book-card-cover-img {
    transform: scale(1.02);
}

.book-card-cover-empty {
    aspect-ratio: 4 / 3;
    background: repeating-linear-gradient(
        45deg, #f5f5f5, #f5f5f5 10px, #eee 10px, #eee 20px
    );
}

/* In the horizontal carousel keep card heights uniform: fit the whole
   cover inside a fixed band, centred, no cropping. */
.card-carousel-track .book-card-cover {
    height: 220px;
    background: #f0f0f0;
}

.card-carousel-track .book-card-cover-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.book-card-body {
    padding: 1rem 0 0;
}

.book-card-author {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #666;
    margin-bottom: 0.5rem;
}

.book-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.25;
    margin: 0 0 0.5rem;
}

.book-card-year {
    font-size: 0.85rem;
    color: #666;
}

/* ─── Book detail page ─────────────────────────────────────────────── */

.book {
    max-width: var(--container-lg);
    margin: 0 auto;
}

.book-back {
    padding: 1rem 2rem;
    font-size: 0.85rem;
    color: #666;
    border-bottom: 1px solid #f0f0f0;
}

.book-back a { color: inherit; text-decoration: underline; }
.book-back a:hover { text-decoration: none; color: #000; }
.book-back-sep { margin: 0 0.5rem; color: #ccc; }

.book-detail {
    display: grid;
    grid-template-columns: minmax(280px, 1fr) minmax(0, 2fr);
    gap: 3rem;
    padding: 3rem 2rem;
}

.book-detail-cover img {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.book-detail-cover-empty {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: repeating-linear-gradient(
        45deg, #f5f5f5, #f5f5f5 20px, #eee 20px, #eee 40px
    );
}

.book-detail-author {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #666;
    margin-bottom: 0.75rem;
}

.book-detail-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin: 0 0 1.5rem;
}

.book-detail-about {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #222;
    margin-bottom: 2rem;
}

.book-detail-about p { margin: 0 0 1em; }

.book-detail-meta {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0.5rem 1.5rem;
    margin: 2rem 0;
    padding: 1.5rem 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.book-detail-meta dt {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #999;
}

.book-detail-meta dd {
    margin: 0;
    font-size: 0.95rem;
}

.book-detail-more {
    font-size: 1rem;
    line-height: 1.7;
    color: #333;
}

.book-detail-more p { margin: 0 0 1em; }

/* ─── Responsive ───────────────────────────────────────────────────── */

@media (max-width: 1280px) {
    .books-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .card-carousel-track .book-card { flex-basis: calc((100% - 3rem) / 4); }
}

@media (max-width: 1024px) {
    .books-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-carousel-track .book-card { flex-basis: calc((100% - 2rem) / 3); }
}

@media (max-width: 768px) {
    .books-page { padding: 1rem 1rem 3rem; }
    .books-heading { font-size: 1.75rem; }
    .book-detail {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 1rem;
    }
    .book-detail-title { font-size: 1.75rem; }
    .book-detail-meta { grid-template-columns: 1fr; gap: 0.25rem 0; }
    .book-detail-meta dd { margin-bottom: 0.5rem; }
    .card-carousel-track .book-card { flex-basis: calc((100% - 1rem) / 2); }
}

@media (max-width: 480px) {
    .books-grid { grid-template-columns: 1fr; }
    .card-carousel-track .book-card { flex-basis: 60%; }
}