/* Natural Healing China — minimal, SEO-friendly, no framework.
   Warm ivory / deep ink green palette per brand rules.
   Responsive: mobile-first, breakpoints at 480px / 640px / 900px. */

:root {
    --ivory: #f7f4ec;
    --ink: #1f3a34;
    --ink-soft: #3d5a53;
    --jade: #5f8b7f;
    --gold: #b98a3e;
    --paper: #fffdf7;
    --line: #e6e0d2;
    --max: 960px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--ivory);
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    line-height: 1.6;
}

body { overflow-wrap: break-word; }

img { max-width: 100%; height: auto; }
a { color: var(--ink-soft); }
a:hover { color: var(--gold); }

/* ===================== Public header ===================== */
.brand {
    max-width: var(--max);
    margin: 0 auto;
    padding: 1.25rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    row-gap: .6rem;
    border-bottom: 1px solid var(--line);
}
.logo {
    font-size: clamp(1rem, 3.5vw, 1.15rem);
    letter-spacing: .02em;
    text-decoration: none;
    color: var(--ink);
    font-weight: 700;
}
.nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .35rem 1rem;
    margin-left: auto;
}
.nav a {
    text-decoration: none;
    font-size: .95rem;
    padding: .45rem .1rem; /* taller tap target on touch screens */
}
.nav a.active { font-weight: 700; }
/* Articles dropdown: article sections visible right in the nav. */
.nav-drop { position: relative; display: inline-flex; align-items: center; }
.nav-caret {
    background: none;
    border: 0;
    cursor: pointer;
    font-size: .75rem;
    line-height: 1;
    color: var(--ink-soft);
    padding: .45rem .2rem;
}
.nav-caret:hover { color: var(--ink); }
.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 50;
    min-width: 230px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 10px 28px rgba(0, 0, 0, .09);
    padding: .35rem;
}
.nav-drop.open .nav-menu { display: block; }
@media (hover: hover) {
    .nav-drop:hover .nav-menu { display: block; }
}
.nav-menu a {
    display: block;
    padding: .45rem .7rem;
    border-radius: 5px;
    white-space: nowrap;
}
.nav-menu a:hover { background: #f4efe4; }
.nav-group {
    margin: .45rem .7rem .15rem;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--ink-soft);
}
.nav-group:first-child { margin-top: .2rem; }
.nav-search { display: inline-block; }
.nav-search input[type=search] {
    padding: .3rem .6rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-family: inherit;
    width: 140px;
    max-width: 100%;
}

@media (max-width: 640px) {
    .brand { flex-direction: column; align-items: flex-start; padding: 1rem .85rem; }
    .nav { margin-left: 0; width: 100%; }
    .nav-search { width: 100%; }
    .nav-search input[type=search] { width: 100%; }
}

/* ===================== Hero / home ===================== */
.hero {
    max-width: var(--max);
    margin: 0 auto;
    padding: clamp(2rem, 6vw, 3.5rem) 1rem 2rem;
}
.hero h1 {
    font-size: clamp(1.7rem, 5.5vw, 2.4rem);
    line-height: 1.2;
    margin: 0 0 .5rem;
}
.lede {
    max-width: 60ch;
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    color: var(--ink-soft);
}
.cta { margin-top: 1.5rem; display: flex; gap: .75rem; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: .65rem 1.25rem;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid var(--ink);
    font-family: inherit;
    cursor: pointer;
}
.btn:hover { background: var(--ink-soft); }
.btn.secondary {
    background: transparent;
    color: var(--ink);
}
.btn.secondary:hover { background: rgba(0,0,0,.05); }

.areas, .featured, .featured-articles {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2.25rem 1rem;
}
.areas__list { list-style: none; padding: 0; display: grid; gap: 1rem; }
.areas__list li {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 1rem;
    background: var(--paper);
}
.areas__list li a { display: block; color: inherit; text-decoration: none; }
.areas__list li a:hover strong { text-decoration: underline; }
.areas__list strong { display: block; margin-bottom: .25rem; }
.areas__list span { color: var(--ink-soft); font-size: .95rem; }
@media (min-width: 720px) {
    .areas__list { grid-template-columns: 1fr 1fr; }
}

.book-card {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 1rem;
    background: var(--paper);
}
.book-card__cover {
    width: 150px;
    min-height: 200px;
    background: linear-gradient(160deg, var(--ink), var(--jade));
    border-radius: 4px;
    flex-shrink: 0;
}
img.book-card__cover { object-fit: cover; background: none; align-self: flex-start; height: auto; }
.book-card__body { flex: 1 1 220px; }
.book-card__body h3 { margin-top: 0; }

.related-books { margin-top: 3rem; }
.related-books > h2 { margin-bottom: 1rem; }

footer {
    max-width: var(--max);
    margin: 2rem auto 0;
    padding: 1.5rem 1rem;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: .9rem;
}
.footer-nav, .footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: .25rem 1.25rem;
    margin-bottom: .75rem;
}
.footer-nav a, .footer-legal a {
    color: var(--ink-soft);
    text-decoration: none;
}
.footer-nav a:hover, .footer-legal a:hover {
    color: var(--ink);
    text-decoration: underline;
}

/* ===================== Errors / login ===================== */
.error-404, .admin-login {
    max-width: 640px;
    margin: 4rem auto;
    padding: 2rem 1rem;
    text-align: left;
}
.alert {
    background: #fbe9e9;
    border: 1px solid #e6a3a3;
    color: #8a2f2f;
    padding: .6rem .8rem;
    border-radius: 4px;
}

/* ===================== Forms (shared) ===================== */
label { display: block; margin: .9rem 0 .25rem; font-weight: 600; }
input[type=email], input[type=password] {
    width: 100%;
    padding: .6rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-family: inherit;
}
fieldset { border: 1px solid var(--line); border-radius: 6px; margin: 1rem 0; padding: .75rem 1rem; min-width: 0; }
label.inline { display: inline-flex; align-items: center; gap: .4rem; font-weight: 400; margin: .3rem 0; }

/* ===================== Admin header ===================== */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    row-gap: .6rem;
    max-width: var(--max);
    margin: 0 auto;
    padding: 1rem;
    border-bottom: 1px solid var(--line);
}
.admin-nav { display: flex; gap: .35rem .9rem; flex-wrap: wrap; align-items: center; }
.admin-nav a { text-decoration: none; font-size: .95rem; white-space: nowrap; }
.admin-logout { display: inline-flex; align-items: center; }

@media (max-width: 640px) {
    .admin-header { flex-direction: column; align-items: flex-start; }
    .admin-nav { width: 100%; }
}

/* ===================== Admin dashboard stats ===================== */
.stats {
    max-width: var(--max);
    margin: 0 auto;
    padding: 1.5rem 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}
.stat { border: 1px solid var(--line); border-radius: 6px; padding: 1rem; text-align: center; background: var(--paper); }
.stat span { display: block; font-size: 2rem; color: var(--ink); }
.hint { color: var(--ink-soft); font-size: .9rem; }

/* ===================== Public content pages ===================== */
main > *, .article-full, .book-detail {
    max-width: var(--max);
    margin: 0 auto;
    padding: 1.5rem 1rem;
}
.page-head { padding-bottom: .25rem; }
.page-head h1 { margin: 0 0 .25rem; font-size: clamp(1.55rem, 4.5vw, 2rem); }
.page-head p { color: var(--ink-soft); max-width: 65ch; }

/* Article card grids: single column on phones, 2 columns on tablets,
   3 columns on desktop — keeps card images at a tasteful size instead of
   full-width banners. */
.card-list, .article-list { display: grid; gap: 1.5rem; }
.card-list > h2 { grid-column: 1 / -1; margin-bottom: 0; }
@media (min-width: 700px) {
    .card-list, .article-list { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .card-list, .article-list { grid-template-columns: repeat(3, 1fr); }
}
.card, .article-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
    padding: 1.1rem 1.25rem;
}
.card h2, .card h3, .article-card h2 { margin: 0 0 .35rem; font-size: 1.2rem; line-height: 1.35; }
.card h2 a, .card h3 a, .article-card h2 a { text-decoration: none; color: var(--ink); }
.card h2 a:hover, .card h3 a:hover, .article-card h2 a:hover { color: var(--gold); }
/* Article card thumbnail (hero image). */
.card-thumb {
    display: block;
    margin: -1.1rem -1.25rem 1rem;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
    line-height: 0;
}
.card-thumb img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.meta { color: var(--ink-soft); font-size: .88rem; margin: 0 0 .4rem; }
.meta time { margin-left: .5rem; }
.tag {
    display: inline-block;
    background: rgba(95,139,127,.14);
    border-radius: 999px;
    padding: .05rem .6rem;
    font-size: .82rem;
    text-decoration: none;
}
.summary {
    color: var(--ink-soft);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.readmore { text-decoration: none; font-weight: 600; }

.article-full h1 { font-size: clamp(1.55rem, 5vw, 2.1rem); line-height: 1.25; margin: .25rem 0 .5rem; }
.topics { color: var(--ink-soft); font-size: .9rem; }
.article-body { max-width: 70ch; }
.article-body h2 { margin-top: 2rem; font-size: clamp(1.25rem, 3.5vw, 1.5rem); }
.article-body table {
    width: 100%;
    border-collapse: collapse;
    background: var(--paper);
}
/* Wide tables scroll inside their own box instead of breaking narrow viewports. */
.article-body table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
}
.article-body table td, .article-body table th {
    border: 1px solid var(--line);
    padding: .4rem .6rem;
}
.article-body pre, .article-body code { overflow-x: auto; }
.disclaimer {
    margin-top: 2rem;
    padding: .75rem 1rem;
    border-left: 3px solid var(--gold);
    background: var(--paper);
    color: var(--ink-soft);
    font-size: .9rem;
}

.price { font-size: 1.2rem; font-weight: 700; }
.price.big { font-size: 1.5rem; }
.pages { font-weight: 400; color: var(--ink-soft); font-size: .9rem; }
.subtitle { color: var(--ink-soft); font-style: italic; }
.book-detail { display: flex; gap: 1.5rem; align-items: flex-start; flex-wrap: wrap; }
.book-card__cover.large { width: 180px; min-height: 240px; }
@media (max-width: 640px) {
    .book-detail { flex-direction: column; }
    .book-card__cover.large { width: 140px; min-height: 190px; }
}

.pagination { margin: 1.5rem 0; display: flex; gap: .4rem; flex-wrap: wrap; justify-content: center; }
.pagination a, .pagination .current {
    display: inline-block;
    padding: .3rem .7rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    text-decoration: none;
    background: var(--paper);
}
.pagination .current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.empty { color: var(--ink-soft); font-style: italic; }

/* ===================== Checkout ===================== */
.checkout-form { max-width: 480px; }
.checkout-form input[type=email] {
    width: 100%;
    padding: .65rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-family: inherit;
}
.checkout-form button { margin-top: 1rem; }
.form-error {
    max-width: var(--max);
    margin: 0 auto 1rem;
    padding: .6rem 1rem;
    background: #fbe9e9;
    border: 1px solid #e6a3a3;
    color: #8a2f2f;
    border-radius: 4px;
}

/* ===================== Admin ===================== */
.admin-page { max-width: var(--max); margin: 0 auto; padding: 1.5rem 1rem; }

/* Tables: horizontal-scroll wrapper so wide tables never break the page. */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--line);
    background: var(--paper);
    border-radius: 4px;
}
.admin-table { width: 100%; min-width: 600px; border-collapse: collapse; border: 0; }
.admin-table th, .admin-table td {
    text-align: left;
    padding: .5rem .7rem;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}
.admin-table tr:last-child td { border-bottom: 0; }
.admin-table th { background: rgba(95,139,127,.12); }
.actions { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.actions form { display: inline; }
.btn.small { padding: .25rem .6rem; font-size: .85rem; }
.btn.danger { background: #8a2f2f; border-color: #8a2f2f; color: var(--paper); }
.badge {
    display: inline-block;
    padding: .05rem .55rem;
    border-radius: 999px;
    font-size: .8rem;
    background: rgba(95,139,127,.16);
    white-space: nowrap;
}
.badge.published, .badge.paid { background: rgba(95,139,127,.32); }
.badge.draft, .badge.pending { background: rgba(185,138,62,.22); }
.badge.failed, .badge.refunded, .badge.cancelled { background: rgba(138,47,47,.2); }
.flash {
    max-width: var(--max);
    margin: 0 auto 1rem;
    padding: .6rem 1rem;
    background: rgba(95,139,127,.16);
    border-radius: 4px;
}
.admin-form { max-width: 760px; }
.admin-form input[type=text], .admin-form input[type=email],
.admin-form input[type=number], .admin-form select,
.admin-form textarea {
    width: 100%;
    padding: .5rem .6rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-family: inherit;
    font-size: .95rem;
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 0 1rem; }
.topics-box label { display: inline-flex; margin-right: 1rem; }
.quick-links { max-width: var(--max); margin: 0 auto; padding: .5rem 1rem; }

/* Media library grid */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 160px), 1fr));
    gap: 1rem;
    margin: 1rem 0;
}
.media-item {
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--paper);
    padding: .6rem;
    text-align: center;
}
.media-item img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 4px;
    background: var(--ivory);
}
.media-meta {
    font-size: .78rem;
    color: var(--ink-soft);
    word-break: break-all;
    margin: .4rem 0;
}

/* Very narrow phones: tighten spacing */
@media (max-width: 400px) {
    .brand, .hero, .areas, .featured, .featured-articles,
    main > section, .article-full, .book-detail,
    .admin-page, .stats, .quick-links, footer {
        padding-left: .85rem;
        padding-right: .85rem;
    }
    .btn { padding: .55rem 1rem; }
    .book-card { padding: 1rem; }
    .book-card__cover { width: 90px; min-height: 120px; }
}

/* ---- Breadcrumb + topic pages (SEO additions) ---- */
.breadcrumb {
    max-width: var(--max);
    margin: 0 auto;
    padding: .8rem 1rem 0;
    font-size: .82rem;
    color: var(--ink-soft);
}
.breadcrumb a { color: var(--accent, #7a4a2b); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span[aria-current="page"] { font-weight: 600; }
/* Article hero image lives inside the already-centered .article-full;
   keep its bottom spacing without un-centering the homepage hero section. */
.article-full .hero { margin: 0 0 1rem; }
.hero img {
    width: 100%;
    max-width: 720px;
    height: auto;
    border-radius: 8px;
    display: block;
}
.topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    padding: 1rem 1.25rem 2rem;
}
.topic-card {
    background: var(--paper);
    border: 1px solid var(--line, #e4dccb);
    border-radius: 8px;
    padding: 1rem;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.topic-card:hover { box-shadow: 0 3px 8px rgba(0,0,0,.1); }
.topic-card h2 { font-size: 1.05rem; margin: 0 0 .35rem; }
.topic-card p { margin: 0; font-size: .85rem; color: var(--ink-soft); }

/* Contact email: image + copy button (anti-scrape). */
.email-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}
.email-img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--line, #e4dccb);
    border-radius: 8px;
}

/* PayPal hosted payment button (book detail). */
.paypal-buy { margin: 1rem 0; }
.paypal-buy form { display: inline-grid; justify-items: center; align-content: start; gap: 0.5rem; }
.pp-btn { text-align: center; border: none; border-radius: 0.25rem; min-width: 11.625rem; padding: 0 2rem; height: 2.625rem; font-weight: bold; background-color: #FFD140; color: #000; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 1rem; line-height: 1.25rem; cursor: pointer; }
.pp-btn:hover { background-color: #f0c63a; }
.paypal-buy img { max-width: 180px; height: auto; }

/* Book detail: landscape hero banner + buy box. */
.book-detail { display: block; }
.book-banner { width: 100%; height: auto; aspect-ratio: 2 / 1; object-fit: cover; border-radius: 10px; margin-bottom: 1.5rem; }
.buy-box { display: flex; gap: 1.25rem; align-items: center; background: #faf7f0; border: 1px solid var(--line, #e4dccb); border-radius: 10px; padding: 1.25rem; margin: 1.5rem 0; flex-wrap: wrap; }
.buy-box .book-card__cover { width: 110px; min-height: 150px; }
.buy-box__info { flex: 1 1 240px; }
.buy-box .price.big { margin: 0 0 .75rem; }
.secure-note { color: var(--ink-soft, #6b6257); font-size: .85rem; margin: .5rem 0 0; }
/* Homepage featured book: longer intro. */
.book-card__body .tagline { font-style: italic; color: var(--ink-soft, #6b6257); }
.book-card__body .meta { font-weight: bold; }
/* Books list: price + button on one row, tighter card rhythm. */
.price--row { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; margin-bottom: 0; }
.book-card__body h2 { margin-top: 0; font-size: 1.3rem; }

/* Home hero: text + ink-wash image side by side. */
.hero { display: flex; align-items: center; gap: 2rem; flex-wrap: wrap; }
.hero__text { flex: 1 1 300px; }
.hero .hero__img { flex: 1 1 300px; width: auto; max-width: 560px; height: auto; aspect-ratio: 2 / 1; object-fit: cover; border-radius: 10px; }
@media (max-width: 720px) {
    .hero__img { max-width: none; }
}
/* Four Areas: equal-height cards per row. */
.areas__list { align-items: stretch; }
.areas__list > li { height: 100%; box-sizing: border-box; }
/* Contact email image: keep it modest. */
.email-img { max-width: 300px; }

/* Mobile: book cards stack vertically (cover on top). */
@media (max-width: 640px) {
    .book-card { flex-direction: column; }
    .book-card__cover { width: 132px; }
}
/* Hero flex items must be allowed to shrink (no intrinsic-width overflow). */
.hero__text, .hero .hero__img { min-width: 0; }
/* Articles page: sub-channel (category) nav. */
.channel-nav { display: flex; align-items: center; justify-content: center; gap: .5rem; flex-wrap: wrap; margin: 0 auto 1.5rem; text-align: center; }
.channel-nav__label { color: var(--ink-soft, #6b6257); font-size: .9rem; }
.channel-nav__link { display: inline-block; padding: .3rem .9rem; border: 1px solid var(--line, #e4dccb); border-radius: 999px; background: var(--paper); text-decoration: none; font-size: .9rem; }
.channel-nav__link:hover { border-color: var(--ink); }
/* Search: Google-style one-per-row results, books pinned with a warm tint. */
.results { margin-top: .5rem; }
.result { display: flex; gap: 1rem; align-items: flex-start; padding: 1.1rem 0; border-bottom: 1px solid var(--line, #e4dccb); }
.result__thumb { flex-shrink: 0; width: 120px; }
.result__thumb img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; }
.result__thumb--book { width: 68px; }
.result__thumb--book img { aspect-ratio: auto; }
.result__body { flex: 1; min-width: 0; }
.result__title { font-size: 1.2rem; margin-bottom: .25rem; }
.result__title a { text-decoration: none; }
.result__title a:hover { text-decoration: underline; }
.result__tag { display: inline-block; vertical-align: middle; font-size: .7rem; font-weight: bold; text-transform: uppercase; letter-spacing: .08em; color: #7a5f14; background: #f3e3ac; border-radius: 4px; padding: .1rem .45rem; margin-left: .4rem; }
.result__snippet { color: var(--ink-soft, #6b6257); margin: 0; }
.result--book { background: #fdfaf2; border: 1px solid #ecdfae; border-bottom-width: 1px; border-radius: 8px; padding: 1rem 1.1rem; margin-bottom: 1rem; }
@media (max-width: 640px) {
    .result__thumb { width: 88px; }
    .result__thumb--book { width: 54px; }
}

/* Book PDF preview gallery */
.book-preview { margin: 2rem 0; }
.book-preview h2 { margin-bottom: 0.25rem; }
.preview-hint { color: #777; font-size: 0.9rem; margin: 0 0 1rem; }
.preview-thumbs { display: flex; gap: 0.75rem; overflow-x: auto; padding-bottom: 0.5rem; }
.preview-thumb { flex: 0 0 auto; width: 150px; padding: 0; border: 1px solid #e4e4e4; border-radius: 6px; background: #fff; cursor: zoom-in; overflow: hidden; }
.preview-thumb img { display: block; width: 100%; height: auto; }
.preview-thumb:hover { border-color: #b98a2f; box-shadow: 0 2px 10px rgba(0,0,0,0.08); }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 1000; background: rgba(20, 18, 12, 0.92); display: flex; align-items: center; justify-content: center; }
.lightbox[hidden] { display: none; }
.lightbox .lb-img { max-width: min(92vw, 760px); max-height: 86vh; border-radius: 4px; box-shadow: 0 8px 40px rgba(0,0,0,0.5); background: #fff; }
.lightbox .lb-close, .lightbox .lb-prev, .lightbox .lb-next { position: absolute; border: 0; background: rgba(255,255,255,0.12); color: #fff; font-size: 2rem; line-height: 1; width: 3rem; height: 3rem; border-radius: 50%; cursor: pointer; }
.lightbox .lb-close:hover, .lightbox .lb-prev:hover, .lightbox .lb-next:hover { background: rgba(255,255,255,0.28); }
.lightbox .lb-close { top: 1rem; right: 1rem; }
.lightbox .lb-prev { left: 1rem; top: 50%; transform: translateY(-50%); }
.lightbox .lb-next { right: 1rem; top: 50%; transform: translateY(-50%); }
.lightbox .lb-count { position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); color: #ddd; font-size: 0.9rem; margin: 0; }
@media (max-width: 640px) {
    .preview-thumb { width: 110px; }
    .lightbox .lb-prev { left: 0.25rem; }
    .lightbox .lb-next { right: 0.25rem; }
}

/* Two-column layout with right sidebar (article / book pages) */
.with-sidebar { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 3rem; align-items: start; }
.with-sidebar__main { min-width: 0; }
.sidebar { position: sticky; top: 2rem; }
.sidebar-block { margin-bottom: 2rem; }
.sidebar-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: #8a7a5c; margin: 0 0 0.75rem; padding-bottom: 0.5rem; border-bottom: 1px solid #e8e0cf; }
.toc-list, .sidebar-links { list-style: none; margin: 0; padding: 0; }
.toc-list li, .sidebar-links li { margin-bottom: 0.55rem; }
.toc-list a, .sidebar-links a { color: #4a4a42; text-decoration: none; font-size: 0.92rem; line-height: 1.45; }
.toc-list a:hover, .sidebar-links a:hover { color: #b98a2f; text-decoration: underline; }
@media (max-width: 1023px) {
    .with-sidebar { grid-template-columns: 1fr; gap: 0; }
    .sidebar { position: static; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid #e8e0cf; }
}