.book-details {
    padding: 40px 0 60px;
}

.book-details .card-panel {
    background: #ffffff;
    border-radius: 24px;
    padding: 28px 32px;
    height: 100%;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.book-details-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
}

.book-details-image img {
    width: 100%;
    border-radius: 18px;
    object-fit: cover;
    box-shadow: 0 25px 35px rgba(15, 23, 42, 0.18);
}

.book-details-content {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.book-details-header .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    font-weight: 600;
    color: #2563eb;
    margin-bottom: 8px;
}

.book-details-title {
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
}

.book-details-description h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 8px;
}

.book-details-description .description-body {
    line-height: 1.7;
    color: #1e293b;
}

.book-details-checkout {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
}

.book-details-price .price {
    font-size: 2.2rem;
    font-weight: 700;
    color: #111827;
}

.book-details-price .price-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}

.book-details-price .original-price {
    font-size: 1rem;
    color: #9ca3af;
    text-decoration: line-through;
}

.book-details-price .discount-badge {
    background: #fee2e2;
    color: #dc2626;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.9rem;
}

.book-details-note {
    font-size: 0.95rem;
    color: #475569;
    margin: 0;
}

.book-details-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.book-details-actions .btn {
    padding: 14px;
    font-weight: 600;
    border-radius: 14px;
}

@media (max-width: 991.98px) {
    .book-details .card-panel {
        margin-bottom: 20px;
    }

    .book-details-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .book-details-actions .btn {
        flex: 1 1 200px;
    }
}