/* Public SEO catalog pages (/books, /audiobooks, /read-along, /genres, /genres/{slug}).
   Plain, crawlable, responsive listing built on the shared BookCard. Class prefix: cat- */

.cat-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 96px 20px 64px;
}

.cat-header {
    margin-bottom: 16px;
}

/* Breadcrumb trail: SEO hierarchy (BreadcrumbList JSON-LD) + wayfinding. */
.cat-crumbs {
    margin-bottom: 14px;
}

.cat-crumbs ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 0;
    margin: 0;
    font-size: 14px;
}

.cat-crumbs li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #6e6e6e;
}

.cat-crumbs li:not(:first-child)::before {
    content: "/";
    color: #b8bcc4;
}

.cat-crumbs a {
    color: #0174b1;
    text-decoration: none;
}

.cat-crumbs a:hover {
    text-decoration: underline;
}

.cat-crumbs [aria-current="page"] {
    color: #6e6e6e;
    font-weight: 600;
}

body.dark-mode .cat-crumbs a {
    color: #5cc4ff;
}

body.dark-mode .cat-crumbs li,
body.dark-mode .cat-crumbs [aria-current="page"] {
    color: #d0d0d0;
}

/* Catalog sub-nav: lateral links between the formats + genres (internal linking). */
.cat-subnav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.cat-subnav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    background: #f1f3f6;
    border: 1px solid #e6e8ec;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.12s ease, color 0.12s ease;
}

.cat-subnav-link:hover {
    background: #e6f4fb;
    color: #0174b1;
}

.cat-subnav-link.active {
    background: #0174b1;
    border-color: #0174b1;
    color: #fff;
}

.cat-subnav-link:focus-visible {
    outline: 2px solid #0174b1;
    outline-offset: 2px;
}

body.dark-mode .cat-subnav-link {
    background: #1e2126;
    border-color: #2c3038;
    color: #d0d0d0;
}

body.dark-mode .cat-subnav-link.active {
    background: #0174b1;
    color: #fff;
}

.cat-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 10px;
    color: var(--bs-body-color, #1a1a1a);
}

.cat-intro {
    font-size: 17px;
    line-height: 1.5;
    max-width: 720px;
    margin: 0;
    color: #4a4a4a;
}

body.dark-mode .cat-intro {
    color: #b8b8b8;
}

.cat-count {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    color: #6e6e6e;
}

/* Responsive book grid. auto-fill so the row reflows from phone to wide desktop. */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 24px 18px;
}

@media (min-width: 768px) {
    .cat-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

.cat-empty {
    padding: 48px 0;
    font-size: 17px;
    color: #6e6e6e;
}

/* Genre index: simple linked cards, one per category. */
.cat-genre-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.cat-genre-card {
    display: block;
    padding: 22px 20px;
    border-radius: 14px;
    background: #f5f6f8;
    border: 1px solid #e6e8ec;
    color: var(--bs-body-color, #1a1a1a);
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.cat-genre-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

body.dark-mode .cat-genre-card {
    background: #1e2126;
    border-color: #2c3038;
    color: #f0f0f0;
}

/* Pagination: plain crawlable prev/next links + current-page label. */
.cat-pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    margin-top: 40px;
}

.cat-pager-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 999px;
    background: #0174b1;
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
}

.cat-pager-link:hover {
    background: #015d8d;
    color: #ffffff;
}

.cat-pager-current {
    font-size: 15px;
    color: #6e6e6e;
    font-variant-numeric: tabular-nums;
}