:root {
    --nc-navy-950: #03101f;
    --nc-navy-900: #061424;
    --nc-navy-800: #0b2545;
    --nc-navy-700: #123761;
    --nc-gold: #d4af37;
    --nc-gold-2: #f6d56f;
    --nc-cream: #f8f4ea;
    --nc-paper: #fdfbf6;
    --nc-muted: #68707d;
    --nc-line: rgba(15, 23, 42, .12);
    --nc-shadow: 0 24px 70px rgba(3, 16, 31, .16);
    --nc-radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.nc-body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #172033;
    background: #f5f0e6;
    overflow-x: hidden;
}
.site-bg {
    position: fixed;
    inset: 0;
    z-index: -3;
    background:
        radial-gradient(circle at 12% 12%, rgba(212,175,55,.18), transparent 32%),
        radial-gradient(circle at 88% 4%, rgba(11,37,69,.18), transparent 34%),
        linear-gradient(180deg, #f9f4e9 0%, #fffdf9 38%, #f3efe6 100%);
}
.site-bg:after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .28;
    background-image: linear-gradient(rgba(6,20,36,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(6,20,36,.05) 1px, transparent 1px);
    background-size: 42px 42px;
}


.nc-page-container {
    max-width: 1240px;
}
.nc-content-shell {
    max-width: 1240px;
    margin-inline: auto;
}

/* Navigation */
.nc-navbar {
    background: rgba(3, 16, 31, .88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,.08);
    box-shadow: 0 10px 30px rgba(3, 16, 31, .18);
}
.brand-logo { height: 42px; width: auto; }
.brand-word { font-weight: 800; letter-spacing: -.03em; color: var(--nc-gold-2); }
.nc-navbar .nav-link { color: rgba(255,255,255,.76); font-weight: 650; font-size: .93rem; }
.nc-navbar .nav-link:hover { color: #fff; }
.btn-gold {
    --bs-btn-bg: linear-gradient(135deg, var(--nc-gold-2), var(--nc-gold));
    --bs-btn-border-color: rgba(212,175,55,.55);
    --bs-btn-color: #15100a;
    --bs-btn-hover-color: #15100a;
    --bs-btn-hover-border-color: var(--nc-gold);
    background: linear-gradient(135deg, var(--nc-gold-2), var(--nc-gold));
    border: 1px solid rgba(212,175,55,.55);
    color: #15100a;
    font-weight: 800;
}
.btn-gold:hover { filter: brightness(.98); transform: translateY(-1px); }
.btn-nc { background: var(--nc-navy-800); color: #fff; border-color: var(--nc-navy-800); font-weight: 750; }
.btn-nc:hover { background: var(--nc-navy-950); color: #fff; }
.btn-outline-nc { color: var(--nc-navy-800); border-color: rgba(11,37,69,.35); font-weight: 750; }
.btn-outline-nc:hover { background: var(--nc-navy-800); color: #fff; }
.btn-ghost-light { color: #fff; border: 1px solid rgba(255,255,255,.24); background: rgba(255,255,255,.08); }
.btn-ghost-light:hover { color: #fff; background: rgba(255,255,255,.15); }
.btn-ghost-dark { color: var(--nc-navy-800); border: 1px solid rgba(11,37,69,.18); background: rgba(11,37,69,.04); }
.btn-amazon { background: #ffb703; border-color: #ffb703; color: #1d1608; font-weight: 850; }
.btn-amazon:hover { background: #f2a900; color: #1d1608; }
.shadow-gold { box-shadow: 0 14px 35px rgba(212,175,55,.28); }

/* Hero */
.hero-v4 {
    position: relative;
    background:
        linear-gradient(135deg, rgba(3,16,31,.98), rgba(6,20,36,.92) 45%, rgba(11,37,69,.92)),
        radial-gradient(circle at 80% 20%, rgba(212,175,55,.4), transparent 30%);
    color: #fff;
    border-bottom-left-radius: 42px;
    border-bottom-right-radius: 42px;
    min-height: 610px;
    box-shadow: 0 30px 80px rgba(3,16,31,.25);
}
.min-vh-hero { min-height: 610px; }
.hero-grid {
    position: absolute;
    inset: 0;
    opacity: .13;
    background-image: linear-gradient(rgba(255,255,255,.22) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.22) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: radial-gradient(circle at 60% 40%, black, transparent 75%);
}
.hero-shape { position: absolute; border-radius: 999px; filter: blur(2px); opacity: .75; }
.hero-shape-a { width: 460px; height: 460px; right: -130px; top: 40px; background: radial-gradient(circle, rgba(212,175,55,.35), transparent 68%); }
.hero-shape-b { width: 360px; height: 360px; left: -120px; bottom: -120px; background: radial-gradient(circle, rgba(47,121,193,.28), transparent 68%); }
.hero-reader-art { position: absolute; right: max(2vw, 18px); bottom: -54px; width: min(46vw, 600px); height: min(48vw, 520px); background: url("../img/reading-person-bg.svg") center/contain no-repeat; opacity: .35; mix-blend-mode: screen; pointer-events: none; z-index: 0; }
.hero-kicker, .section-kicker, .modal-kicker {
    text-transform: uppercase;
    letter-spacing: .14em;
    font-size: .74rem;
    font-weight: 900;
    color: var(--nc-gold-2);
}
.hero-kicker span { display: inline-block; width: 34px; height: 2px; background: var(--nc-gold); vertical-align: middle; margin-right: .65rem; }
.hero-title {
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(2.35rem, 4.7vw, 5.15rem);
    line-height: .98;
    font-weight: 900;
    letter-spacing: -.06em;
    max-width: 780px;
}
.hero-copy { color: rgba(255,255,255,.74); font-size: clamp(.98rem, 1.05vw, 1.12rem); max-width: 680px; line-height: 1.72; }
.btn-hero-glass { color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.2); backdrop-filter: blur(10px); font-weight: 800; }
.btn-hero-glass:hover { color: #fff; background: rgba(255,255,255,.14); }
.hero-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; max-width: 620px; }
.hero-metrics div { padding: .8rem .9rem; border-radius: 20px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); }
.hero-metrics strong { display: block; font-size: 1.45rem; color: var(--nc-gold-2); line-height: 1; }
.hero-metrics span { color: rgba(255,255,255,.65); font-size: .85rem; font-weight: 700; }
.library-dashboard-card {
    max-width: 520px;
    margin-left: auto;
    background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.88));
    color: #172033;
    border: 1px solid rgba(255,255,255,.45);
    border-radius: 34px;
    padding: clamp(1.25rem, 2.3vw, 2rem);
    box-shadow: 0 26px 76px rgba(0,0,0,.30);
    position: relative;
    overflow: hidden;
}
.library-dashboard-card:before {
    content: "";
    position: absolute;
    width: 280px; height: 280px;
    right: -110px; top: -110px;
    background: radial-gradient(circle, rgba(212,175,55,.32), transparent 68%);
}
.dashboard-topline { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; position: relative; }
.dashboard-eyebrow { font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 900; color: var(--nc-gold); }
.dashboard-topline h2 { font-family: "Playfair Display", Georgia, serif; font-weight: 900; letter-spacing: -.04em; margin: 0; }
.dashboard-status { padding: .45rem .75rem; background: var(--nc-navy-900); color: #fff; border-radius: 999px; font-size: .78rem; font-weight: 800; }
.premium-search { position: relative; margin-top: 1.4rem; }
.search-input-wrap { box-shadow: 0 12px 30px rgba(3,16,31,.08); border-radius: 18px; overflow: hidden; }
.search-input-wrap .input-group-text { background: #fff; border-color: rgba(15,23,42,.08); font-weight: 900; color: var(--nc-navy-800); }
.search-input-wrap .form-control, .premium-search .form-select { border-color: rgba(15,23,42,.08); }
.premium-search .form-label { font-weight: 850; color: var(--nc-navy-800); }
.mini-shelf { display: flex; gap: .75rem; align-items: flex-end; padding: 1rem; background: linear-gradient(180deg, rgba(11,37,69,.04), rgba(11,37,69,.08)); border-radius: 24px; overflow-x: auto; }
.mini-book { display: block; width: 64px; height: 92px; flex: 0 0 64px; border-radius: 8px; overflow: hidden; box-shadow: 0 12px 22px rgba(3,16,31,.22); transform: rotate(-1deg); transition: .2s ease; background: #ddd; }
.mini-book:nth-child(even) { transform: rotate(1.2deg); }
.mini-book:hover { transform: translateY(-5px) scale(1.03); }
.mini-book img { width: 100%; height: 100%; object-fit: cover; }
.dashboard-note { color: var(--nc-muted); font-weight: 650; font-size: .92rem; }

/* Value strip */
.value-strip { margin-top: -28px; position: relative; z-index: 2; }
.value-card { height: 100%; padding: 1.35rem; border-radius: 24px; background: rgba(255,255,255,.92); border: 1px solid rgba(212,175,55,.22); box-shadow: 0 16px 50px rgba(3,16,31,.1); }
.value-card span { color: var(--nc-gold); font-weight: 900; letter-spacing: .12em; }
.value-card strong { display: block; font-size: 1.1rem; color: var(--nc-navy-900); margin: .4rem 0; }
.value-card p { margin: 0; color: var(--nc-muted); }

/* Catalog */
.section-title { font-family: "Playfair Display", Georgia, serif; color: var(--nc-navy-900); font-weight: 900; letter-spacing: -.04em; font-size: clamp(2rem, 3vw, 3rem); }
.section-copy { color: var(--nc-muted); font-size: 1.05rem; }
.quick-filter-panel { width: min(460px, 100%); padding: 1rem; border: 1px solid rgba(15,23,42,.08); background: rgba(255,255,255,.72); border-radius: 22px; box-shadow: 0 12px 35px rgba(3,16,31,.07); }
.shelf-section { position: relative; padding: 1.4rem; border-radius: 32px; background: rgba(255,255,255,.58); border: 1px solid rgba(15,23,42,.07); box-shadow: 0 20px 60px rgba(3,16,31,.07); }
.shelf-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; border-bottom: 1px solid rgba(15,23,42,.08); padding-bottom: 1rem; }
.shelf-label { text-transform: uppercase; color: var(--nc-gold); font-size: .72rem; letter-spacing: .13em; font-weight: 900; }
.shelf-header h3 { font-family: "Playfair Display", Georgia, serif; font-weight: 900; margin: 0; color: var(--nc-navy-900); letter-spacing: -.03em; font-size: clamp(1.5rem, 2.2vw, 2.25rem); }
.shelf-header p { margin: .25rem 0 0; color: var(--nc-muted); }
.premium-book-card { height: 100%; display: grid; grid-template-columns: 112px 1fr; gap: 1rem; padding: 1rem; background: rgba(255,255,255,.92); border: 1px solid rgba(15,23,42,.08); border-radius: 26px; box-shadow: 0 18px 44px rgba(3,16,31,.08); transition: .22s ease; }
.premium-book-card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(3,16,31,.14); }
.book-thumb-link { text-decoration: none; }
.book-thumb { width: 112px; height: 152px; border-radius: 14px; overflow: hidden; box-shadow: 0 14px 28px rgba(3,16,31,.22); background: linear-gradient(135deg, #e8e2d6, #fff); position: relative; }
.book-thumb:after { content:""; position:absolute; inset:0; box-shadow: inset 8px 0 12px rgba(0,0,0,.12); pointer-events:none; }
.book-thumb img { width: 100%; height: 100%; object-fit: cover; }
.book-card-body { min-width: 0; }
.book-card-badges { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .55rem; }
.badge.format { color: #fff; font-weight: 900; letter-spacing: .04em; }
.badge.format.pdf { background: #b42318; }
.badge.format.epub { background: #0b65c2; }
.badge.amazon { background: #ffb703; color: #1d1608; font-weight: 900; }
.soft-badge { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.18); }
.premium-book-card h3 { font-size: 1rem; font-weight: 850; line-height: 1.25; margin: 0 0 .35rem; letter-spacing: -.02em; }
.premium-book-card h3 a { color: var(--nc-navy-900); text-decoration: none; }
.premium-book-card h3 a:hover { color: var(--nc-navy-700); }
.book-author { color: var(--nc-gold); font-weight: 800; font-size: .84rem; margin-bottom: .5rem; }
.premium-book-card p { color: var(--nc-muted); font-size: .88rem; line-height: 1.45; margin-bottom: .85rem; }
.book-actions { display: flex; flex-wrap: wrap; gap: .5rem; }

/* Detail */
.book-detail-page { background: transparent; }
.detail-hero { position: relative; color: #fff; overflow: hidden; background: linear-gradient(135deg, var(--nc-navy-950), var(--nc-navy-800)); }
.detail-bg-cover { position: absolute; inset: 0; background-size: cover; background-position: center; filter: blur(28px); transform: scale(1.12); opacity: .18; }
.detail-hero:after { content:""; position:absolute; inset:0; background: radial-gradient(circle at 75% 20%, rgba(212,175,55,.2), transparent 32%); }
.detail-back { color: rgba(255,255,255,.78); text-decoration: none; font-weight: 800; position: relative; z-index: 2; }
.detail-cover-frame { display: inline-block; padding: .8rem; background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.14); border-radius: 28px; box-shadow: 0 32px 80px rgba(0,0,0,.35); }
.detail-cover-v4 { width: min(260px, 100%); aspect-ratio: 2 / 3; object-fit: cover; border-radius: 18px; box-shadow: 16px 16px 0 rgba(212,175,55,.18); }
.detail-content-card { position: relative; z-index: 2; padding: clamp(1.2rem, 3vw, 2.4rem); border-radius: 32px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(14px); }
.detail-content-card h1 { font-family: "Playfair Display", Georgia, serif; font-size: clamp(2.2rem, 4vw, 4.6rem); line-height: .98; font-weight: 900; letter-spacing: -.05em; margin: 0; }
.detail-author { color: var(--nc-gold-2); font-weight: 800; font-size: 1.15rem; margin-top: .8rem; }
.detail-meta-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .8rem; }
.detail-meta-grid div { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); border-radius: 18px; padding: .8rem; }
.detail-meta-grid span { display: block; color: rgba(255,255,255,.56); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.detail-meta-grid strong { display: block; color: #fff; word-break: break-word; }
.purchase-note { background: rgba(255,255,255,.08); border: 1px solid rgba(212,175,55,.24); color: rgba(255,255,255,.78); border-radius: 18px; padding: 1rem; }
.content-panel { background: rgba(255,255,255,.86); border: 1px solid rgba(15,23,42,.08); box-shadow: 0 20px 60px rgba(3,16,31,.08); border-radius: 28px; }
.feature-list.compact div { padding: .7rem 0; border-bottom: 1px solid rgba(15,23,42,.08); font-weight: 750; color: var(--nc-navy-800); }
.related-card { height: 100%; background: rgba(255,255,255,.88); border: 1px solid rgba(15,23,42,.08); border-radius: 22px; padding: 1rem; box-shadow: 0 16px 40px rgba(3,16,31,.06); }
.related-card img { width: 76px; height: 104px; object-fit: cover; border-radius: 10px; box-shadow: 0 10px 22px rgba(3,16,31,.18); margin-bottom: 1rem; }
.related-card h3 { font-size: .98rem; font-weight: 850; line-height: 1.25; }
.related-card h3 a { color: var(--nc-navy-900); text-decoration: none; }
.related-card p { color: var(--nc-muted); margin: 0; }

/* Reader */
.reader-app-shell { min-height: calc(100vh - 68px); background: #f2efe8; display: flex; flex-direction: column; }
.reader-topbar-v4 { position: sticky; top: 68px; z-index: 30; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .9rem 1.25rem; background: rgba(255,255,255,.9); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(15,23,42,.09); }
.reader-back { color: var(--nc-navy-800); text-decoration: none; font-size: .82rem; font-weight: 800; }
.reader-title { color: var(--nc-navy-900); font-weight: 900; line-height: 1.2; }
.reader-subtitle { color: var(--nc-muted); font-size: .83rem; }
.reader-actions-v4 { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; }
.pdf-reader-layout { flex: 1; display: grid; grid-template-columns: 250px 1fr; gap: 1rem; padding: 1rem; min-height: calc(100vh - 150px); }
.pdf-side-panel, .reader-sidebar-v4 { background: rgba(255,255,255,.88); border: 1px solid rgba(15,23,42,.08); border-radius: 24px; padding: 1rem; box-shadow: 0 16px 45px rgba(3,16,31,.07); overflow: auto; }
.reader-frame-v4 { width: 100%; min-height: calc(100vh - 174px); border: 0; border-radius: 24px; box-shadow: 0 20px 60px rgba(3,16,31,.12); background: #fff; }
.reader-book-mini img { display: block; width: 92px; height: 128px; object-fit: cover; border-radius: 12px; box-shadow: 0 12px 24px rgba(3,16,31,.18); margin-bottom: .8rem; }
.reader-book-mini strong { display: block; color: var(--nc-navy-900); line-height: 1.2; }
.reader-book-mini span { color: var(--nc-muted); font-size: .84rem; }
.reader-note-box { margin-top: 1rem; padding: 1rem; border-radius: 18px; color: var(--nc-muted); background: rgba(212,175,55,.1); border: 1px solid rgba(212,175,55,.24); }
.epub-reader-layout { flex: 1; display: grid; grid-template-columns: 290px 1fr; gap: 1rem; padding: 1rem; min-height: calc(100vh - 150px); }
.toc-title { margin: 1.25rem 0 .7rem; font-weight: 900; color: var(--nc-navy-900); }
.toc-v4 button, #toc button { display: block; width: 100%; border: 0; background: transparent; text-align: left; color: var(--nc-navy-800); font-weight: 700; padding: .55rem .5rem; border-radius: 12px; }
.toc-v4 button:hover, #toc button:hover { background: rgba(11,37,69,.07); }
.epub-main-v4 { min-width: 0; display: flex; flex-direction: column; gap: .8rem; }
.epub-controlbar-v4 { display: flex; align-items: center; justify-content: space-between; gap: .75rem; background: rgba(255,255,255,.88); border: 1px solid rgba(15,23,42,.08); border-radius: 24px; padding: .75rem; box-shadow: 0 12px 35px rgba(3,16,31,.06); }
.epub-tools { display: flex; align-items: center; gap: .45rem; flex-wrap: wrap; justify-content: center; }
.reader-progress-text { color: var(--nc-muted); font-size: .82rem; font-weight: 700; }
.epub-viewer-v4 { flex: 1; min-height: calc(100vh - 244px); background: #fffdf8; border-radius: 28px; overflow: hidden; box-shadow: 0 24px 70px rgba(3,16,31,.13); border: 1px solid rgba(15,23,42,.08); }

/* Footer and modal */
.nc-footer { background: linear-gradient(135deg, var(--nc-navy-950), var(--nc-navy-800)); color: #fff; border-top: 1px solid rgba(255,255,255,.08); }
.footer-logo { height: 54px; }
.footer-badges span { display: inline-flex; margin: .2rem; padding: .45rem .75rem; border-radius: 999px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.82); font-weight: 800; }
.login-preview-modal { background: linear-gradient(135deg, var(--nc-navy-950), var(--nc-navy-800)); color: #fff; border: 1px solid rgba(255,255,255,.12); border-radius: 28px; overflow: hidden; }
.login-preview-box { padding: 1rem; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); border-radius: 20px; }

/* Search hiding */
.book-col.is-hidden, .shelf-section.is-hidden { display: none !important; }

@media (max-width: 1199px) {
    .pdf-reader-layout { grid-template-columns: 1fr; }
}
@media (max-width: 991px) {
    .min-vh-hero { min-height: auto; }
    .hero-v4 { min-height: auto; }
    .hero-reader-art { opacity: .18; width: 82vw; right: -18vw; bottom: 12%; }
    .library-dashboard-card { max-width: none; margin-left: 0; }
    .hero-metrics { grid-template-columns: 1fr; }
    .epub-reader-layout { grid-template-columns: 1fr; }
    .reader-sidebar-v4 { display: none; }
    .reader-topbar-v4 { top: 66px; align-items: flex-start; flex-direction: column; }
    .epub-controlbar-v4 { flex-direction: column; }
    .detail-meta-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 575px) {
    .hero-reader-art { display: none; }
    .hero-title { font-size: 2.35rem; }
    .premium-book-card { grid-template-columns: 86px 1fr; padding: .85rem; }
    .book-thumb { width: 86px; height: 122px; }
    .shelf-section { padding: 1rem; border-radius: 24px; }
    .shelf-header { align-items: flex-start; flex-direction: column; }
    .detail-meta-grid { grid-template-columns: 1fr; }
    .reader-actions-v4 { width: 100%; justify-content: flex-start; }
    .reader-frame-v4, .epub-viewer-v4 { min-height: 72vh; }
}

/* v4.2 login/session refinements */
.nav-user-pill {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: .35rem .8rem;
    border-radius: 999px;
    color: #fff;
    background: rgba(255,255,255,.10);
    border: 1px solid rgba(255,255,255,.14);
    font-size: .82rem;
    font-weight: 700;
    max-width: 220px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.login-page-v4 {
    min-height: 70vh;
    background:
        radial-gradient(circle at 15% 0%, rgba(212,175,55,.22), transparent 30%),
        radial-gradient(circle at 85% 10%, rgba(57,116,178,.22), transparent 34%);
}
.login-card-v4 {
    background: rgba(255,255,255,.88);
    border: 1px solid rgba(15,23,42,.08);
    border-radius: 32px;
    padding: clamp(1.5rem, 4vw, 3rem);
    box-shadow: 0 28px 80px rgba(6,20,36,.14);
    backdrop-filter: blur(18px);
}
.login-card-v4 h1 {
    font-family: var(--nc-serif);
    font-weight: 900;
    color: var(--nc-navy-950);
    letter-spacing: -.03em;
    font-size: clamp(2rem, 4vw, 3.1rem);
}
.login-note-v4 {
    border-radius: 20px;
    background: rgba(6,20,36,.06);
    border: 1px solid rgba(6,20,36,.08);
    padding: 1rem;
    color: var(--nc-muted);
    font-size: .92rem;
}
.value-card.light {
    background: #fff;
    color: var(--nc-navy-950);
    border: 1px solid rgba(15,23,42,.08);
}
.value-card.light p { color: var(--nc-muted); }

/* v4.3 Community Foundation */
.reading-status-badge { color:#061424; background:#fff7d6; border:1px solid rgba(212,175,55,.55); }
.status-want { background:#e0f2fe !important; color:#075985 !important; }
.status-reading { background:#fef3c7 !important; color:#92400e !important; }
.status-read { background:#dcfce7 !important; color:#166534 !important; }
.status-paused { background:#f1f5f9 !important; color:#475569 !important; }
.status-dnf { background:#fee2e2 !important; color:#991b1b !important; }
.curiosity-panel { background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,248,226,.92)); }
.status-form .btn.active { background:var(--nc-navy-900); color:#fff; border-color:var(--nc-navy-900); }
.review-list, .club-post-list, .leaderboard-list { display:grid; gap:1rem; }
.review-card, .club-post-card { border:1px solid rgba(15,23,42,.08); border-radius:22px; padding:1rem; background:rgba(255,255,255,.72); box-shadow:0 12px 28px rgba(3,16,31,.05); }
.review-head { display:flex; justify-content:space-between; gap:1rem; align-items:center; margin-bottom:.5rem; }
.review-head span { color:#d4a017; letter-spacing:.06em; }
.review-card h3 { font-size:1rem; font-weight:850; color:var(--nc-navy-900); margin:.25rem 0 .45rem; }
.review-card p, .club-post-card p { color:#475569; line-height:1.6; margin-bottom:0; }
.application-note { margin-top:.75rem; padding:.75rem; border-radius:16px; background:#fff7d6; color:#4b5563; font-size:.92rem; }
.review-form textarea, .review-form input, .review-form select { border-radius:16px; border-color:rgba(15,23,42,.12); }
.library-page .content-panel { overflow:hidden; }
.library-hero-panel { position:relative; }
.library-hero-panel:after { content:""; position:absolute; right:-80px; top:-80px; width:220px; height:220px; border-radius:50%; background:radial-gradient(circle, rgba(212,175,55,.25), transparent 65%); pointer-events:none; }
.points-card { border-radius:28px; padding:1.4rem; background:linear-gradient(135deg, #061424, #0b2545); color:#fff; box-shadow:0 24px 60px rgba(3,16,31,.16); }
.points-card span { display:block; color:#d4af37; font-weight:800; text-transform:uppercase; letter-spacing:.08em; font-size:.75rem; }
.points-card strong { display:block; font-size:3rem; line-height:1; margin:.35rem 0; font-family:"Playfair Display", Georgia, serif; }
.points-card small { color:rgba(255,255,255,.72); }
.library-stat { display:block; text-decoration:none; border-radius:24px; padding:1.2rem; background:rgba(255,255,255,.88); border:1px solid rgba(15,23,42,.08); box-shadow:0 14px 35px rgba(3,16,31,.06); min-height:116px; }
.library-stat strong { display:block; font-size:2rem; color:var(--nc-navy-900); font-weight:900; }
.library-stat span { color:var(--nc-muted); font-weight:750; }
.link-stat { background:linear-gradient(135deg, #fff7d6, #fff); }
.mini-library-card { display:grid; grid-template-columns:82px 1fr; gap:1rem; padding:.85rem; border-radius:22px; background:#fff; border:1px solid rgba(15,23,42,.08); height:100%; }
.mini-library-card img { width:82px; height:116px; object-fit:cover; border-radius:12px; box-shadow:0 12px 22px rgba(3,16,31,.14); }
.mini-library-card h3 { font-size:.98rem; line-height:1.25; margin:.5rem 0 .25rem; font-weight:850; }
.mini-library-card h3 a { text-decoration:none; color:var(--nc-navy-900); }
.mini-library-card p { color:var(--nc-muted); font-size:.86rem; margin-bottom:.65rem; }
.leaderboard-item { display:grid; grid-template-columns:42px 1fr auto; align-items:center; gap:.6rem; padding:.75rem; border-radius:16px; background:#f8fafc; }
.leaderboard-item span { width:34px; height:34px; display:grid; place-items:center; border-radius:999px; background:#fff7d6; color:#92400e; font-weight:900; }
.leaderboard-item strong { color:var(--nc-navy-900); font-size:.92rem; }
.leaderboard-item em { color:#64748b; font-style:normal; font-weight:800; font-size:.85rem; }
.club-hero { position:relative; overflow:hidden; background:radial-gradient(circle at 85% 20%, rgba(212,175,55,.18), transparent 28%), linear-gradient(135deg, #061424, #0b2545 65%, #0f3561); color:#fff; }
.club-title { font-family:"Playfair Display", Georgia, serif; font-size:clamp(2.2rem, 5vw, 5rem); line-height:.96; font-weight:900; letter-spacing:-.05em; }
.club-copy { color:rgba(255,255,255,.78); font-size:1.12rem; max-width:640px; line-height:1.65; }
.club-card-featured { display:grid; grid-template-columns:130px 1fr; gap:1.2rem; padding:1.2rem; border-radius:32px; background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.16); backdrop-filter:blur(14px); box-shadow:0 24px 80px rgba(0,0,0,.24); }
.club-card-featured img { width:130px; height:190px; object-fit:cover; border-radius:18px; box-shadow:12px 12px 0 rgba(212,175,55,.2); }
.club-card-featured span { color:#d4af37; font-weight:900; text-transform:uppercase; letter-spacing:.08em; font-size:.75rem; }
.club-card-featured h2 { font-size:1.45rem; font-weight:900; margin:.35rem 0; }
.club-card-featured p { color:rgba(255,255,255,.72); }
.prompt-box { padding:1rem; border-radius:22px; background:#fff7d6; border:1px solid rgba(212,175,55,.25); color:#4b5563; line-height:1.65; }
.club-post-card > div { display:flex; justify-content:space-between; gap:1rem; margin-bottom:.6rem; }
.club-post-card span { color:#64748b; font-size:.84rem; }
.club-page .content-panel textarea { border-radius:18px; }
@media (max-width: 768px) {
  .club-card-featured { grid-template-columns:1fr; }
  .club-card-featured img { width:110px; height:160px; }
  .mini-library-card { grid-template-columns:70px 1fr; }
  .mini-library-card img { width:70px; height:100px; }
}

/* v4.5 Certifications + Profile */
.cert-preview-panel {
    border-radius: 34px;
    padding: clamp(1.25rem, 3vw, 2rem);
    background:
        radial-gradient(circle at 12% 10%, rgba(212,175,55,.18), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(248,244,234,.92));
    border: 1px solid rgba(15,23,42,.08);
    box-shadow: 0 24px 70px rgba(3,16,31,.08);
}
.cert-mini-card,
.cert-card {
    position: relative;
    overflow: hidden;
    border-radius: 28px;
    background: rgba(255,255,255,.94);
    border: 1px solid rgba(15,23,42,.08);
    padding: 1.25rem;
    box-shadow: 0 18px 45px rgba(3,16,31,.07);
}
.cert-mini-card:before,
.cert-card:before {
    content: "";
    position: absolute;
    right: -55px;
    top: -55px;
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212,175,55,.22), transparent 65%);
    pointer-events: none;
}
.cert-mini-kicker,
.cert-card-top span {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: #92400e;
    background: #fff7d6;
    border: 1px solid rgba(212,175,55,.35);
    border-radius: 999px;
    padding: .28rem .65rem;
    font-size: .72rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    font-weight: 900;
}
.cert-mini-card h3,
.cert-card h3 {
    margin: .9rem 0 .55rem;
    font-size: 1.18rem;
    line-height: 1.18;
    font-weight: 900;
    color: var(--nc-navy-950);
}
.cert-mini-card p,
.cert-card p {
    color: var(--nc-muted);
    font-size: .94rem;
    line-height: 1.55;
}
.cert-mini-meta,
.cert-meta {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: .75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(15,23,42,.08);
}
.cert-mini-meta span,
.cert-meta span {
    display: block;
    color: #64748b;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    font-weight: 800;
}
.cert-mini-meta strong,
.cert-meta strong {
    color: var(--nc-navy-900);
    font-weight: 900;
}
.cert-hero {
    color: #fff;
    background:
        radial-gradient(circle at 80% 20%, rgba(212,175,55,.18), transparent 28%),
        radial-gradient(circle at 15% 70%, rgba(57,116,178,.26), transparent 28%),
        linear-gradient(135deg, #061424, #0b2545 62%, #0f3561);
}
.cert-mini-panel {
    border-radius: 32px;
    padding: 1.5rem;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.14);
    box-shadow: 0 24px 70px rgba(0,0,0,.22);
    backdrop-filter: blur(14px);
}
.cert-mini-panel strong {
    display: block;
    font-size: 4rem;
    line-height: 1;
    color: #d4af37;
    font-family: var(--nc-serif);
}
.cert-mini-panel span {
    color: rgba(255,255,255,.78);
    font-weight: 700;
}
.cert-card-top {
    display: flex;
    justify-content: space-between;
    gap: .75rem;
    align-items: center;
}
.cert-card-top img {
    max-width: 72px;
    max-height: 44px;
    object-fit: contain;
}
.profile-identity-card {
    display: grid;
    justify-items: center;
    text-align: center;
    gap: .45rem;
    border-radius: 28px;
    padding: 1.2rem;
    background: linear-gradient(135deg, #061424, #0b2545);
    color: #fff;
    box-shadow: 0 24px 60px rgba(3,16,31,.16);
}
.profile-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #d4af37;
    color: #061424;
    font-weight: 900;
    font-size: 1.8rem;
    font-family: var(--nc-serif);
}
.profile-identity-card span { color: rgba(255,255,255,.72); font-size: .9rem; }
.profile-form .form-control,
.profile-form .form-select {
    border-radius: 16px;
    border-color: rgba(15,23,42,.12);
}
.profile-form .form-label {
    font-weight: 800;
    color: var(--nc-navy-900);
}

/* v4.6 community/admin refinements */
.reader-status-panel {
    margin: 1rem 0;
    padding: 1rem;
    border-radius: 1.25rem;
    background: rgba(255,255,255,.78);
    border: 1px solid rgba(6,20,36,.08);
    box-shadow: 0 14px 34px rgba(6,20,36,.08);
}
.reader-status-grid {
    display: grid;
    gap: .45rem;
    margin-top: .75rem;
}
.reader-reflection-link {
    display: inline-flex;
    margin-top: .75rem;
    font-weight: 800;
    color: #0B2545;
    text-decoration: none;
}
.reader-reflection-link:hover { color: #D4AF37; }
.admin-page {
    background: radial-gradient(circle at top left, rgba(212,175,55,.14), transparent 32%), linear-gradient(180deg, rgba(248,244,234,.72), rgba(255,255,255,.92));
    min-height: 70vh;
}
.admin-hero {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 1.75rem;
    border-radius: 1.7rem;
    background: linear-gradient(135deg, #061424, #0B2545);
    color: #fff;
    box-shadow: 0 28px 70px rgba(6,20,36,.22);
}
.admin-hero h1 { font-family: var(--font-display, 'Playfair Display', serif); font-size: clamp(2rem, 4vw, 3.2rem); margin: 0 0 .25rem; }
.admin-hero p { margin: 0; color: rgba(255,255,255,.72); max-width: 760px; }
.admin-featured-book { display: flex; gap: 1rem; align-items: center; }
.admin-featured-book img { width: 86px; height: 118px; object-fit: cover; border-radius: .8rem; box-shadow: 0 14px 30px rgba(0,0,0,.18); }
.admin-featured-book strong, .admin-featured-book span, .admin-featured-book small { display: block; }
.admin-featured-book span, .admin-featured-book small { color: #6b7280; }
.admin-table th { color: #061424; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.admin-table td { vertical-align: middle; }
.admin-club-form textarea, .admin-club-form input, .admin-club-form select { border-radius: 1rem; }
@media (max-width: 768px) { .admin-hero { flex-direction: column; align-items: flex-start; } }

/* v4.7 admin/upload refinements */
.admin-tile { text-decoration: none; color: inherit; transition: transform .18s ease, box-shadow .18s ease; }
.admin-tile:hover { transform: translateY(-3px); color: inherit; box-shadow: 0 20px 60px rgba(6,20,36,.12); }
.reader-status-inline, .reader-status-panel { background: rgba(255,255,255,.9); border: 1px solid rgba(6,20,36,.08); border-radius: 22px; padding: 1rem; box-shadow: 0 16px 40px rgba(6,20,36,.08); }
.reader-status-grid { display: flex; flex-wrap: wrap; gap: .5rem; margin: .5rem 0; }
.reader-reflection-link { color: #7a5a00; font-weight: 700; text-decoration: none; }
.reader-reflection-link:hover { text-decoration: underline; }
.form-text { color: #7b8494; }

/* v4.8 reader/admin refinements */
.reader-topbar-compact {
    align-items: flex-start;
    padding: .72rem 1rem;
}
.reader-actions-learning {
    align-items: center;
    row-gap: .4rem;
}
.reader-status-top-form {
    display: flex;
    align-items: center;
    gap: .35rem;
    flex-wrap: wrap;
    margin: 0;
}
.reader-status-top-form .btn {
    padding: .32rem .66rem;
    font-size: .78rem;
}
.reader-no-sidebar.pdf-reader-layout,
.reader-no-sidebar.epub-reader-layout {
    display: block;
    padding: .85rem clamp(.75rem, 2vw, 1.5rem);
    min-height: calc(100vh - 138px);
}
.reader-no-sidebar .reader-frame-v4 {
    min-height: calc(100vh - 158px);
}
.reader-no-sidebar .epub-main-v4 {
    min-height: calc(100vh - 158px);
}
.reader-no-sidebar .epub-viewer-v4 {
    min-height: calc(100vh - 230px);
}
.admin-help-box {
    border: 1px solid rgba(212,175,55,.25);
    background: rgba(212,175,55,.08);
    border-radius: 18px;
    padding: .9rem 1rem;
    color: #4b5563;
}
.admin-search-card {
    background: rgba(255,255,255,.9);
    border: 1px solid rgba(15,23,42,.08);
    border-radius: 24px;
    padding: 1.25rem;
    box-shadow: 0 16px 45px rgba(6,20,36,.07);
}
.admin-empty-state {
    padding: 2rem;
    text-align: center;
    color: #6b7280;
    border: 1px dashed rgba(15,23,42,.18);
    border-radius: 22px;
    background: rgba(255,255,255,.58);
}
@media (max-width: 991px) {
    .reader-topbar-compact { flex-direction: column; }
    .reader-actions-learning { justify-content: flex-start; }
}


/* v4.10 reader refinements */
.reader-toc-offcanvas {
    --bs-offcanvas-width: min(390px, 92vw);
    background: rgba(253,251,246,.98);
    border-right: 1px solid rgba(15,23,42,.10);
    box-shadow: 20px 0 60px rgba(3,16,31,.18);
}
.reader-toc-offcanvas .offcanvas-title {
    font-family: var(--nc-serif);
    font-weight: 900;
    color: var(--nc-navy-950);
    line-height: 1.12;
}
.toc-offcanvas-list .toc-btn,
.toc-offcanvas-list button {
    margin-bottom: .25rem;
    border-radius: 14px;
    padding: .7rem .75rem;
    font-size: .92rem;
    line-height: 1.25;
}
.reader-loading-note,
.reader-js-error {
    margin: 2rem auto;
    max-width: 620px;
    border-radius: 22px;
    padding: 1.25rem 1.5rem;
    color: #4b5563;
    background: rgba(212,175,55,.09);
    border: 1px solid rgba(212,175,55,.25);
    text-align: center;
}
.reader-js-error strong {
    color: var(--nc-navy-950);
}
.reader-no-sidebar.epub-reader-layout {
    display: block;
    padding: .85rem clamp(.75rem, 2vw, 1.5rem);
}
.reader-no-sidebar .epub-main-v4 {
    min-height: calc(100vh - 158px);
}

/* v4.10 reader stability */
.reader-frame-v4,
.epub-viewer-v4 {
    height: calc(100vh - 230px);
    min-height: 560px;
}
.reader-no-sidebar .epub-viewer-v4 {
    height: calc(100vh - 210px);
    min-height: 620px;
}
.epub-viewer-v4 iframe {
    width: 100% !important;
    height: 100% !important;
}
.epub-viewer-ready {
    background: #fffdf8;
}
.epub-viewer-v4 .epub-container {
    width: 100% !important;
    height: 100% !important;
}
.epub-viewer-v4 iframe,
.epub-viewer-v4 > div {
    min-height: 100%;
}
.pdf-reader-layout:fullscreen,
.epub-reader-layout:fullscreen {
    background: #f2efe8;
    padding: 1rem;
}
.pdf-reader-layout:fullscreen .reader-frame-v4,
.epub-reader-layout:fullscreen .epub-viewer-v4 {
    height: calc(100vh - 84px);
    min-height: calc(100vh - 84px);
}
@media (max-width: 768px) {
    .reader-frame-v4,
    .epub-viewer-v4,
    .reader-no-sidebar .epub-viewer-v4 {
        height: 72vh;
        min-height: 72vh;
    }
}


/* v4.11 reader fixes */
.epub-viewer-v4 {
    position: relative;
}
.epub-viewer-v4 iframe {
    width: 100% !important;
    height: 100% !important;
    border: 0 !important;
}
.reader-frame-v4 {
    background: #ffffff;
}

/* v4.12 ePUB render stability */
.epub-reader-layout.reader-no-sidebar {
    width: 100%;
}
.epub-main-v4 {
    width: 100%;
}
.epub-viewer-v4 {
    display: block;
    width: 100%;
    height: calc(100vh - 230px) !important;
    min-height: 560px !important;
    background: #fffdf8;
}
.epub-viewer-v4 > div,
.epub-viewer-v4 iframe {
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
}
.epub-viewer-v4 .epub-container,
.epub-viewer-v4 .epub-view {
    height: 100% !important;
}
@media (max-width: 768px) {
    .epub-viewer-v4 {
        height: 72vh !important;
        min-height: 72vh !important;
    }
}


/* v4.13 ePUB readability refinements */
.epub-viewer-v4 {
    display: block;
    width: 100%;
}
.reader-no-sidebar .epub-main-v4 {
    width: 100%;
}
.library-remove-form {
    margin-top: .55rem;
}
.library-remove-form .btn {
    font-size: .76rem;
    padding: .24rem .58rem;
}
.library-flash-message {
    border-radius: 18px;
    padding: .85rem 1rem;
    margin-bottom: 1rem;
    background: rgba(212,175,55,.10);
    border: 1px solid rgba(212,175,55,.25);
    color: #3d4756;
    font-weight: 700;
}

/* v4.14 ePUB scrolled reader + dark mode refinements */
.epub-reader-layout.reader-no-sidebar {
    width: 100%;
    min-height: calc(100vh - 150px);
}
.epub-main-v4 {
    width: 100%;
}
.epub-viewer-v4 {
    width: 100%;
    height: calc(100vh - 230px) !important;
    min-height: 560px !important;
    overflow: auto !important;
    background: #fffdf8;
    border-radius: 28px;
}
.epub-viewer-v4 > div,
.epub-viewer-v4 iframe,
.epub-viewer-v4 .epub-container,
.epub-viewer-v4 .epub-view {
    width: 100% !important;
    min-height: 100% !important;
}
.epub-viewer-v4 iframe {
    border: 0 !important;
    background: transparent !important;
}
.reader-dark-mode .reader-app-shell,
.reader-dark-mode .epub-reader-layout,
.reader-dark-mode .pdf-reader-layout {
    background: #0b1120;
}
.reader-dark-mode .reader-topbar-v4,
.reader-dark-mode .epub-controlbar-v4 {
    background: rgba(15, 23, 42, .92);
    border-color: rgba(255,255,255,.10);
    color: #f8fafc;
}
.reader-dark-mode .reader-title,
.reader-dark-mode .reader-back,
.reader-dark-mode .reader-subtitle,
.reader-dark-mode .reader-progress-text {
    color: #f8fafc;
}
.reader-dark-mode .epub-viewer-v4 {
    background: #0f172a;
    border-color: rgba(255,255,255,.12);
    box-shadow: 0 24px 70px rgba(0,0,0,.38);
}
.epub-reader-layout:fullscreen .epub-viewer-v4 {
    height: calc(100vh - 88px) !important;
    min-height: calc(100vh - 88px) !important;
}
.library-remove-form .btn {
    margin-left: .35rem;
}
@media (max-width: 768px) {
    .epub-viewer-v4 {
        height: 72vh !important;
        min-height: 72vh !important;
    }
}

/* v4.15 server-side ePUB reader + library action layout */
.library-card-actions {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
    margin-top: .65rem;
}
.library-card-actions .library-remove-form {
    margin: 0 !important;
    display: inline-flex;
}
.library-card-actions .library-remove-form .btn {
    margin-left: 0 !important;
}
.server-epub-reader.epub-reader-layout.reader-no-sidebar {
    width: 100%;
    min-height: calc(100vh - 150px);
    padding: 1rem;
}
.server-epub-reader .epub-main-v4 {
    width: 100%;
}
.epub-frame-v4 {
    display: block;
    width: 100%;
    height: calc(100vh - 230px);
    min-height: 620px;
    border: 0;
    background: #fffdf8;
    border-radius: 28px;
    box-shadow: 0 24px 70px rgba(3,16,31,.13);
    border: 1px solid rgba(15,23,42,.08);
}
.server-epub-reader:fullscreen .epub-frame-v4,
.epub-reader-layout:fullscreen .epub-frame-v4 {
    height: calc(100vh - 88px);
    min-height: calc(100vh - 88px);
}
.reader-dark-mode .epub-frame-v4 {
    background: #0f172a;
    border-color: rgba(255,255,255,.12);
    box-shadow: 0 24px 70px rgba(0,0,0,.38);
}
.toc-v4 .toc-btn.active,
.toc-offcanvas-list .toc-btn.active {
    background: rgba(212,175,55,.22);
    color: #061424;
    border-color: rgba(212,175,55,.45);
    font-weight: 800;
}
@media (max-width: 768px) {
    .epub-frame-v4 {
        height: 72vh;
        min-height: 72vh;
        border-radius: 20px;
    }
    .library-card-actions {
        gap: .35rem;
    }
}


/* v4.16 ePUB page navigation + dark mode button contrast */
.server-epub-reader .epub-controlbar-v4 {
    position: sticky;
    top: .75rem;
    z-index: 20;
}
.reader-dark-mode .reader-actions-v4 .btn,
.reader-dark-mode .reader-actions-learning .btn,
.reader-dark-mode .reader-topbar-v4 .btn,
.reader-dark-mode .epub-controlbar-v4 .btn,
.reader-dark-mode .btn-outline-nc,
.reader-dark-mode .btn-outline-secondary {
    color: #f8fafc !important;
    border-color: rgba(248, 250, 252, .72) !important;
    background: rgba(15, 23, 42, .72) !important;
}
.reader-dark-mode .reader-actions-v4 .btn:hover,
.reader-dark-mode .reader-actions-learning .btn:hover,
.reader-dark-mode .epub-controlbar-v4 .btn:hover,
.reader-dark-mode .btn-outline-nc:hover,
.reader-dark-mode .btn-outline-secondary:hover {
    color: #061424 !important;
    border-color: #d4af37 !important;
    background: #d4af37 !important;
}
.reader-dark-mode .btn-warning,
.reader-dark-mode .btn-amazon {
    color: #061424 !important;
    background: #f6c945 !important;
    border-color: #f6c945 !important;
}
.epub-frame-v4 {
    overflow: auto;
}
.server-epub-reader:fullscreen .epub-controlbar-v4 {
    top: 0;
    border-radius: 0 0 20px 20px;
}

/* v4.17 Foliate ePUB reader */
.foliate-reader-shell {
    background: #ece9e2;
    min-height: calc(100vh - 142px);
    padding: 1.35rem;
}
.foliate-main-v4 {
    height: calc(100vh - 185px);
    min-height: 680px;
    display: flex;
    flex-direction: column;
    gap: .8rem;
}
.foliate-controlbar-v4 {
    flex: 0 0 auto;
    position: relative;
    z-index: 10;
}
.foliate-reader-v4 {
    flex: 1 1 auto;
    min-height: 0;
    border-radius: 26px;
    overflow: hidden;
    background: #fffdf8;
    box-shadow: 0 24px 70px rgba(6, 20, 36, .12);
    border: 1px solid rgba(6,20,36,.08);
}
.foliate-view-element,
foliate-view.foliate-view-element {
    width: 100%;
    height: 100%;
    display: block;
    background: #fffdf8;
    color: #172033;
}
.reader-loading-card {
    height: 100%;
    display: grid;
    place-items: center;
    font-weight: 800;
    color: #667085;
}
.reader-dark-mode .reader-app-shell {
    background: #0b1220;
}
.reader-dark-mode .foliate-reader-shell {
    background: #0b1220 !important;
}
.reader-dark-mode .foliate-reader-v4,
.reader-dark-mode .foliate-view-element,
.reader-dark-mode foliate-view.foliate-view-element {
    background: #0f172a !important;
    color: #f8fafc !important;
}
.reader-dark-mode .reader-topbar-v4,
.reader-dark-mode .reader-actions-v4,
.reader-dark-mode .reader-status-top-form {
    background: #ffffff !important;
    color: #061424 !important;
}
.reader-dark-mode .reader-topbar-v4 .reader-title,
.reader-dark-mode .reader-topbar-v4 .reader-subtitle,
.reader-dark-mode .reader-topbar-v4 .reader-back {
    color: #061424 !important;
}
.reader-dark-mode .reader-actions-v4 .btn,
.reader-dark-mode .reader-status-top-form .btn {
    color: #061424 !important;
    border-color: rgba(6,20,36,.32) !important;
    background: #ffffff !important;
}
.reader-dark-mode .reader-actions-v4 .btn:hover,
.reader-dark-mode .reader-status-top-form .btn:hover,
.reader-dark-mode .reader-actions-v4 .btn.active,
.reader-dark-mode .reader-status-top-form .btn.active {
    background: #061424 !important;
    border-color: #061424 !important;
    color: #ffffff !important;
}
.reader-dark-mode .reader-actions-v4 .btn-amazon {
    background: #f6c945 !important;
    border-color: #f6c945 !important;
    color: #061424 !important;
}
.reader-dark-mode .foliate-controlbar-v4 .btn {
    color: #f8fafc !important;
    border-color: rgba(248,250,252,.55) !important;
    background: rgba(15,23,42,.75) !important;
}
.reader-dark-mode .foliate-controlbar-v4 .btn:hover {
    background: #f6c945 !important;
    border-color: #f6c945 !important;
    color: #061424 !important;
}
.reader-dark-mode .reader-progress-text {
    color: #e2e8f0 !important;
}
.reader-app-shell:fullscreen .foliate-main-v4,
.epub-reader-layout:fullscreen .foliate-main-v4 {
    height: calc(100vh - 82px);
    min-height: 0;
}
.reader-app-shell:fullscreen .foliate-reader-shell,
.epub-reader-layout:fullscreen {
    min-height: 100vh;
}
@media (max-width: 768px) {
    .foliate-reader-shell { padding: .75rem; }
    .foliate-main-v4 { height: calc(100vh - 230px); min-height: 560px; }
    .foliate-controlbar-v4 { gap: .5rem; }
}


/* v4.18 Bibi ePUB reader integration */
.bibi-reader-layout {
    height: calc(100vh - 118px);
    min-height: 640px;
    width: min(1500px, calc(100% - 32px));
    margin: 16px auto 24px;
    border-radius: 26px;
    overflow: hidden;
    background: #0b1220;
    box-shadow: 0 28px 80px rgba(3, 10, 24, .28);
    border: 1px solid rgba(212, 175, 55, .24);
}
.bibi-reader-frame {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    background: #fffdf8;
}
.reader-topbar-v4 {
    position: relative;
    z-index: 20;
}
.reader-topbar-v4.reader-topbar-compact,
.reader-topbar-v4.reader-topbar-compact * {
    filter: none !important;
}
@media (max-width: 768px) {
    .bibi-reader-layout {
        width: calc(100% - 12px);
        margin: 8px auto 16px;
        border-radius: 14px;
        height: calc(100vh - 156px);
        min-height: 520px;
    }
}


/* v4.18.1 Official Bibi embed patch */
.bibi-official-embed {
    position: relative;
}
.bibi-official-embed iframe,
.bibi-official-embed [data-bibi-frame],
.bibi-official-embed .bibi-frame {
    width: 100% !important;
    height: 100% !important;
    border: 0 !important;
    display: block !important;
}
.bibi-official-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #d4af37;
    font-weight: 800;
    text-decoration: none;
    background: radial-gradient(circle at center, rgba(212,175,55,.15), rgba(6,20,36,.92));
}
.bibi-direct-open-bar {
    width: min(1500px, calc(100% - 32px));
    margin: -12px auto 22px;
    display: flex;
    gap: .75rem;
    align-items: center;
    flex-wrap: wrap;
}
.bibi-noscript-box {
    padding: 2rem;
    color: #172033;
    background: #fffdf8;
}


/* v4.18.2 Bibi legacy-compatible embed sizing */
.bibi-legacy-embed {
    height: 820px;
    min-height: 760px;
    padding: 0;
    background: #fffdf8;
}
.bibi-legacy-embed iframe {
    width: 100% !important;
    height: 100% !important;
    min-height: 760px !important;
    border: 0 !important;
    display: block !important;
    background: #fffdf8 !important;
}
.bibi-legacy-embed .bibi-official-link {
    min-height: 760px;
}
@media (max-width: 768px) {
    .bibi-legacy-embed { height: calc(100vh - 150px); min-height: 560px; }
    .bibi-legacy-embed iframe, .bibi-legacy-embed .bibi-official-link { min-height: 560px !important; }
}