/* ========== Book Page Specific Styles ========== */

        /* --- Book Hero --- */
        .book-hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            padding: var(--nav-height) 2rem 4rem;
        }

        .book-hero-gradient {
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse 80% 60% at 50% 40%, rgba(200,16,46,0.15) 0%, transparent 60%),
                radial-gradient(ellipse 60% 80% at 30% 70%, rgba(200,16,46,0.08) 0%, transparent 50%),
                radial-gradient(ellipse 50% 50% at 70% 30%, rgba(200,16,46,0.06) 0%, transparent 50%);
            animation: heroGradientShift 8s ease-in-out infinite alternate;
            z-index: 0;
        }

        @keyframes heroGradientShift {
            0% { opacity: 0.6; transform: scale(1) rotate(0deg); }
            50% { opacity: 1; transform: scale(1.05) rotate(1deg); }
            100% { opacity: 0.8; transform: scale(1.02) rotate(-1deg); }
        }

        .book-hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 800px;
        }

        .book-hero-cover {
            width: 280px;
            height: 400px;
            margin: 0 auto 3rem;
            perspective: 1000px;
        }

        .book-hero-cover-inner {
            width: 100%;
            height: 100%;
            position: relative;
            transform-style: preserve-3d;
            transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
            transform: rotateY(-8deg) rotateX(4deg);
        }

        .book-hero-cover:hover .book-hero-cover-inner {
            transform: rotateY(8deg) rotateX(-4deg);
        }

        .book-hero-cover-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
            box-shadow:
                -20px 20px 60px rgba(0,0,0,0.5),
                0 0 80px rgba(200,16,46,0.15);
        }

        .book-hero-cover-inner::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius);
            background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
            pointer-events: none;
        }

        .book-hero-title {
            font-family: var(--font-serif);
            font-size: clamp(3rem, 7vw, 6rem);
            font-weight: 800;
            line-height: 1.05;
            color: var(--text);
            margin-bottom: 1rem;
        }

        .book-hero-title .text-accent {
            color: var(--red);
        }

        .book-hero-subtitle {
            font-family: var(--font-sans);
            font-size: clamp(1rem, 2vw, 1.3rem);
            color: var(--text-secondary);
            font-weight: 300;
            letter-spacing: 0.15em;
            text-transform: uppercase;
        }

        /* --- Book Overview --- */
        .book-overview {
            padding: 8rem 0;
        }

        .book-overview-grid {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 5rem;
            align-items: center;
        }

        .book-overview-image {
            position: relative;
            perspective: 1200px;
        }

        .book-cover-3d {
            position: relative;
            transform-style: preserve-3d;
            transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .book-cover-3d:hover {
            transform: rotateY(12deg) rotateX(-5deg) scale(1.02);
        }

        .book-cover-3d img {
            width: 100%;
            max-width: 400px;
            border-radius: var(--radius-lg);
            box-shadow:
                -30px 30px 80px rgba(0,0,0,0.4),
                0 0 120px rgba(200,16,46,0.1);
        }

        .book-cover-3d::before {
            content: '';
            position: absolute;
            left: -15px;
            top: 10px;
            bottom: 10px;
            width: 30px;
            background: linear-gradient(90deg, rgba(200,16,46,0.3), rgba(200,16,46,0.05));
            border-radius: 3px 0 0 3px;
            transform: rotateY(-90deg) translateX(-15px);
            transform-origin: right center;
        }

        .book-overview-text h2 {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 3.5vw, 3rem);
            color: var(--text);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .book-overview-text .book-description {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .available-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.5rem;
            background: rgba(200,16,46,0.1);
            border: 1px solid rgba(200,16,46,0.3);
            border-radius: 50px;
            color: var(--red);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 2rem;
            position: relative;
        }

        .available-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--red);
            animation: badgePulse 2s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(200,16,46,0.4); }
            50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(200,16,46,0); }
        }

        .book-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* --- Chapters / What's Inside --- */
        .chapters-section {
            padding: 8rem 0;
            background: var(--bg-elevated);
        }

        .chapters-grid {
            display: grid;
            gap: 2rem;
            margin-top: 4rem;
        }

        .chapter-card {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 2rem;
            align-items: center;
            padding: 2.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
            opacity: 0;
            transform: translateX(-40px);
        }

        .chapter-card.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .chapter-card:hover {
            border-color: var(--red);
            background: var(--bg-card-hover);
            transform: translateX(12px);
            box-shadow: 0 10px 40px rgba(200,16,46,0.1);
        }

        .chapter-number {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--red), var(--red-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            transition: transform 0.4s ease;
        }

        .chapter-card:hover .chapter-number {
            transform: scale(1.15) rotate(-5deg);
        }

        .chapter-info h3 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--text);
            margin-bottom: 0.5rem;
        }

        .chapter-info p {
            color: var(--text-secondary);
            line-height: 1.6;
            font-size: 1rem;
        }

        /* --- Reviews --- */
        .reviews-section {
            padding: 8rem 0;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 4rem;
        }

        .review-card {
            padding: 2.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
            position: relative;
            overflow: hidden;
        }

        .review-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), var(--glow-color) 0%, transparent 60%);
            opacity: 0;
            transition: opacity 0.4s;
            pointer-events: none;
        }

        .review-card:hover::before {
            opacity: 1;
        }

        .review-stars {
            color: var(--red);
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.15em;
        }

        .review-text {
            font-family: var(--font-serif);
            font-size: 1.15rem;
            font-style: italic;
            color: var(--text);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .review-author {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .review-card .quote-icon {
            font-family: var(--font-serif);
            font-size: 4rem;
            color: var(--red);
            opacity: 0.15;
            position: absolute;
            top: 1rem;
            right: 1.5rem;
            line-height: 1;
        }

        /* --- Author Section --- */
        .author-section {
            padding: 8rem 0;
            background: var(--bg-elevated);
        }

        .author-grid {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 4rem;
            align-items: center;
        }

        .author-image {
            width: 300px;
            height: 380px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
        }

        .author-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .author-image:hover img {
            transform: scale(1.05);
        }

        .author-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 2px solid var(--border);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .author-text h2 {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 3vw, 2.8rem);
            color: var(--text);
            margin-bottom: 0.5rem;
        }

        .author-label {
            color: var(--red);
            font-size: 0.9rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            margin-bottom: 1.5rem;
            display: block;
        }

        .author-text p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        /* --- CTA Section --- */
        .book-cta-section {
            padding: 8rem 0;
            position: relative;
            overflow: hidden;
        }

        .book-cta-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .book-cta-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse 100% 80% at 50% 50%, rgba(200,16,46,0.12) 0%, transparent 60%),
                linear-gradient(to bottom, var(--bg) 0%, transparent 30%, transparent 70%, var(--bg) 100%);
            z-index: 1;
        }

        .book-cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .book-cta-content h2 {
            font-family: var(--font-serif);
            font-size: clamp(2.5rem, 5vw, 4rem);
            color: var(--text);
            margin-bottom: 1.5rem;
            line-height: 1.15;
        }

        .book-cta-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }

        .book-cta-buttons {
            display: flex;
            justify-content: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }

        /* --- Responsive --- */
        @media (max-width: 900px) {
            .book-overview-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
                text-align: center;
            }

            .book-overview-image {
                display: flex;
                justify-content: center;
            }

            .book-cover-3d img {
                max-width: 300px;
            }

            .book-buttons {
                justify-content: center;
            }

            .reviews-grid {
                grid-template-columns: 1fr;
            }

            .author-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .author-image {
                margin: 0 auto;
                width: 250px;
                height: 320px;
            }

            .chapter-card {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .chapter-number {
                margin: 0 auto;
            }
        }

        @media (max-width: 600px) {
            .book-hero-cover {
                width: 200px;
                height: 290px;
            }

            .chapter-card {
                padding: 1.5rem;
            }

            .review-card {
                padding: 1.5rem;
            }
        }