.book-detail-shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.book-detail-main,
.book-detail-sidebar,
.book-detail-nav-grid {
    display: grid;
    gap: 1rem;
}

.book-detail-card {
    border: 1px solid rgba(16, 185, 129, 0.12);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 18px 45px -34px rgba(15, 23, 42, 0.38);
    padding: 1.25rem;
}

.book-detail-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
    gap: 1rem;
    align-items: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(209, 250, 229, 0.88) 100%);
}

.book-detail-eyebrow {
    margin: 0 0 0.5rem;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
}

.book-detail-pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 0.8rem;
}

.book-detail-pill {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.12);
    color: var(--primary-dark);
    font-size: 0.82rem;
    font-weight: 700;
}

.book-detail-hero-copy h1,
.book-detail-sidebar-card h2,
.book-detail-rich-content h2,
.book-detail-rich-content h3,
.book-detail-rich-content h4 {
    color: var(--text-dark);
    margin: 0;
}

.book-detail-hero-copy h1 {
    font-size: clamp(2rem, 4vw, 2.9rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.book-detail-summary,
.book-detail-sidebar-copy,
.book-detail-rich-content p,
.book-detail-rich-content li,
.book-detail-article-meta,
.book-detail-series-link small,
.book-detail-hero-media figcaption {
    color: var(--text-light);
}

.book-detail-summary {
    margin: 0.85rem 0 0;
    font-size: 1rem;
    max-width: 62ch;
}

.book-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.book-detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid transparent;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.book-detail-btn:hover,
.book-detail-btn:focus-visible {
    transform: translateY(-1px);
    outline: none;
}

.book-detail-btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 12px 24px -18px rgba(5, 150, 105, 0.55);
}

.book-detail-btn-primary:hover,
.book-detail-btn-primary:focus-visible {
    background: var(--primary-dark);
}

.book-detail-btn-secondary {
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary-dark);
    border-color: var(--border);
}

.book-detail-btn-secondary:hover,
.book-detail-btn-secondary:focus-visible {
    background: var(--primary-light);
    border-color: #b7e4c7;
}

.book-detail-hero-media {
    margin: 0;
    display: grid;
    gap: 0.7rem;
    justify-items: center;
    justify-self: center;
    width: 100%;
    max-width: 21rem;
}

.book-detail-hero-media img {
    width: 100%;
    max-width: 19rem;
    aspect-ratio: auto;
    max-height: min(52vh, 20rem);
    object-fit: contain;
    border-radius: 18px;
    border: 1px solid rgba(16, 185, 129, 0.12);
    background: rgba(255, 255, 255, 0.96);
    padding: 0.35rem;
}

.book-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 1rem;
    align-items: start;
}

.book-detail-sidebar {
    position: sticky;
    top: 88px;
}

.book-detail-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
    font-size: 0.94rem;
}

.book-detail-rich-content > * + * {
    margin-top: 1rem;
}

.book-detail-rich-content h2,
.book-detail-rich-content h3,
.book-detail-rich-content h4 {
    margin-bottom: 0.6rem;
}

.book-detail-rich-content img {
    display: block;
    width: auto;
    max-width: min(100%, 42rem);
    height: auto !important;
    max-height: min(65vh, 30rem);
    object-fit: contain !important;
    margin: 1.25rem auto;
    border-radius: 18px;
}

.book-detail-rich-content img[class*="w-full"] {
    width: 100% !important;
    max-width: min(100%, 42rem) !important;
}

.book-detail-rich-content img[class*="h-64"],
.book-detail-rich-content img[class*="h-48"] {
    height: auto !important;
}

.book-detail-rich-content figure {
    display: grid;
    justify-items: center;
}

.book-detail-rich-content a {
    color: var(--primary-dark);
}

.book-detail-rich-content a:hover,
.book-detail-rich-content a:focus-visible {
    color: var(--accent);
}

.book-detail-rich-content ul,
.book-detail-rich-content ol {
    padding-left: 1.25rem;
}

.book-detail-rich-content li + li {
    margin-top: 0.35rem;
}

.book-detail-rich-content table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: #fff;
}

.book-detail-rich-content th,
.book-detail-rich-content td {
    padding: 0.85rem 0.9rem;
    text-align: left;
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.book-detail-rich-content th {
    background: rgba(209, 250, 229, 0.55);
    color: var(--text-dark);
}

.book-detail-rich-content .text-blue-600,
.book-detail-rich-content .text-green-700,
.book-detail-rich-content .text-green-600 {
    color: var(--primary-dark) !important;
}

.book-detail-rich-content .bg-blue-50,
.book-detail-rich-content .bg-green-50,
.book-detail-rich-content .bg-gray-50,
.book-detail-rich-content .bg-gray-100,
.book-detail-rich-content .bg-amber-50,
.book-detail-rich-content .bg-red-50 {
    background: rgba(236, 253, 245, 0.9) !important;
    border: 1px solid rgba(16, 185, 129, 0.12);
    border-radius: 18px;
}

.book-detail-rich-content .rounded-lg {
    border-radius: 18px !important;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg {
    position: relative;
    overflow: hidden;
    margin-top: 1.75rem;
    padding: 1.35rem !important;
    background:
        radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 34%),
        linear-gradient(135deg, rgba(236, 253, 245, 0.96) 0%, rgba(255, 255, 255, 0.98) 100%) !important;
    border: 1px solid rgba(16, 185, 129, 0.18) !important;
    box-shadow: 0 20px 42px -34px rgba(15, 23, 42, 0.42);
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg::before,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg::before,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg::before {
    content: "Recommended next reads";
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    background: rgba(5, 150, 105, 0.12);
    color: var(--primary-dark);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > h2,
.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > h3,
.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > h4,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > h2,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > h3,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > h4,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > h2,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > h3,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > h4 {
    margin-top: 0.85rem;
    margin-bottom: 0.45rem;
    color: var(--text-dark) !important;
    font-size: clamp(1.15rem, 2vw, 1.45rem);
    letter-spacing: -0.02em;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > p,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > p,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > p {
    margin: 0;
    max-width: 62ch;
    color: var(--text-light);
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    display: grid;
    gap: 0.8rem;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li {
    position: relative;
    margin: 0;
    padding: 0.95rem 1rem 0.95rem 3rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(148, 163, 184, 0.16);
    color: var(--text-dark);
    box-shadow: 0 16px 34px -32px rgba(15, 23, 42, 0.48);
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li::before,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li::before,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li::before {
    content: "";
    position: absolute;
    left: 1rem;
    top: 1rem;
    width: 1.2rem;
    height: 1.2rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.95), rgba(5, 150, 105, 0.92));
    box-shadow: 0 0 0 0.28rem rgba(16, 185, 129, 0.12);
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li::after,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li::after,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li::after {
    content: "";
    position: absolute;
    left: 1.38rem;
    top: 1.34rem;
    width: 0.42rem;
    height: 0.22rem;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg);
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li + li,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li + li,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li + li {
    margin-top: 0;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li > a,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li > a,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li > a {
    display: inline-block;
    margin-bottom: 0.28rem;
    color: var(--text-dark) !important;
    font-weight: 700;
    text-decoration: none;
}

.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li > a:hover,
.book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li > a:focus-visible,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li > a:hover,
.book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li > a:focus-visible,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li > a:hover,
.book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li > a:focus-visible {
    color: var(--primary-dark) !important;
    text-decoration: underline;
}

.book-detail-series-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    display: grid;
    gap: 0.75rem;
}

.book-detail-series-link,
.book-detail-nav-card {
    display: grid;
    gap: 0.25rem;
    padding: 0.9rem 0.95rem;
    border-radius: 14px;
    border: 1px solid rgba(16, 185, 129, 0.1);
    background: #f8fafc;
    text-decoration: none;
    color: var(--text-dark);
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.book-detail-series-link:hover,
.book-detail-series-link:focus-visible,
.book-detail-nav-card:hover,
.book-detail-nav-card:focus-visible {
    background: var(--primary-light);
    border-color: #b7e4c7;
    transform: translateY(-1px);
    outline: none;
}

.book-detail-series-link-active {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(5, 150, 105, 0.26);
}

.book-detail-series-link-sequence,
.book-detail-nav-card span {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
}

.book-detail-series-link strong,
.book-detail-nav-card strong {
    color: var(--text-dark);
}

.book-detail-series-link small {
    display: block;
    margin-top: 0.15rem;
}

.book-detail-link-list {
    display: grid;
    gap: 0.6rem;
    margin-top: 0.85rem;
}

.book-detail-link-list a {
    color: var(--primary-dark);
    font-weight: 600;
    text-decoration: none;
}

.book-detail-link-list a:hover,
.book-detail-link-list a:focus-visible {
    text-decoration: underline;
    outline: none;
}

@media (max-width: 980px) {
    .book-detail-shell {
        width: min(1180px, calc(100% - 1.25rem));
    }

    .book-detail-hero,
    .book-detail-grid {
        grid-template-columns: 1fr;
    }

    .book-detail-sidebar {
        position: static;
    }

    .book-detail-hero-media {
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    .book-detail-shell {
        padding: 1.2rem 0 2.4rem;
    }

    .book-detail-card {
        padding: 1rem;
    }

    .book-detail-actions {
        display: grid;
    }

    .book-detail-btn {
        width: 100%;
    }

    .book-detail-rich-content > .bg-blue-50.p-6.rounded-lg,
    .book-detail-rich-content > .bg-green-50.p-6.rounded-lg,
    .book-detail-rich-content > .bg-amber-50.p-6.rounded-lg {
        padding: 1rem !important;
    }

    .book-detail-rich-content > .bg-blue-50.p-6.rounded-lg > ul > li,
    .book-detail-rich-content > .bg-green-50.p-6.rounded-lg > ul > li,
    .book-detail-rich-content > .bg-amber-50.p-6.rounded-lg > ul > li {
        padding: 0.9rem 0.9rem 0.9rem 2.8rem;
    }

    .book-detail-hero-media img,
    .book-detail-rich-content img,
    .book-detail-rich-content img[class*="w-full"] {
        max-width: 100% !important;
        max-height: none;
    }
}