.book-card-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

@media (max-width: 920px) {
    .book-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .book-card-grid {
        grid-template-columns: 1fr;
    }
}

.book-card {
    display: grid;
    gap: 0;
    color: var(--text-heading);
    background: var(--surface-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.book-card,
.book-card * {
    box-sizing: border-box;
}

.book-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

.book-card a {
    color: inherit;
    text-decoration: none;
}

.book-card__cover {
    position: relative;
    display: block;
    overflow: hidden;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-hover) 100%);
    aspect-ratio: 4 / 5;
}

.book-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-card__cover--cv-a { background: linear-gradient(135deg, var(--brand) 0%, #4f6b96 100%); }
.book-card__cover--cv-b { background: linear-gradient(135deg, var(--brand-hover) 0%, #4060a5 100%); }
.book-card__cover--cv-c { background: linear-gradient(135deg, var(--accent) 0%, #b8692d 100%); }
.book-card__cover--cv-d { background: linear-gradient(135deg, var(--green-500) 0%, #4c7a54 100%); }

.book-card__fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 18px;
    color: var(--white);
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: var(--weight-bold);
    line-height: 1.25;
    letter-spacing: -0.2px;
    background: linear-gradient(180deg, rgba(26, 26, 46, 0) 0%, rgba(26, 26, 46, 0.65) 100%);
}

.book-card__dogear {
    position: absolute;
    top: 12px;
    right: 12px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 48px;
    padding: 8px 9px;
    border-radius: 16px 16px 16px 4px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--text-heading);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-pop);
}

.book-card__dogear strong {
    display: block;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1;
    font-weight: var(--weight-black);
}

.book-card__dogear span {
    display: block;
    font-family: var(--font-sans);
    font-size: 9px;
    line-height: 1.1;
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 2px;
    text-align: center;
}

.book-card__body {
    display: grid;
    gap: 10px;
    padding: 16px 16px 18px;
}

.book-card__category {
    display: inline-flex;
    align-self: start;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-card);
    background: var(--surface-chip);
    color: var(--brand) !important;
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.book-card__title {
    margin: 0;
    color: var(--text-heading);
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.35;
    font-weight: var(--weight-bold);
}

.book-card__title a:hover,
.book-card__title a:focus {
    color: var(--brand);
}

.book-card__authors {
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 13px;
    line-height: 1.55;
}

.book-card__authors a {
    color: var(--text-link);
    text-decoration: none;
}

.book-card__authors a:hover,
.book-card__authors a:focus {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.book-card__summary {
    margin: 0;
    color: var(--text-body);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.65;
}

.book-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 2px;
}

.book-card__count {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: var(--weight-semibold);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.book-card__count strong {
    font-size: 15px;
    font-weight: var(--weight-bold);
    color: var(--text-heading);
    letter-spacing: 0;
}

.book-card__retailers {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.book-card__retailer {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-card);
    background: var(--surface-chip);
    color: var(--brand) !important;
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.book-card__retailer--martinus { color: var(--accent) !important; }
.book-card__retailer--panta { color: var(--green-500) !important; }

.book-card--compact {
    gap: 0;
}

.book-card--compact .book-card__title {
    font-size: 17px;
}

.book-card--compact .book-card__body {
    gap: 8px;
}

.book-card--compact .book-card__footer {
    justify-content: flex-start;
}

.book-card--compact .book-card__retailers {
    display: none;
}

.book-card--list {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
}

.book-card--list .book-card__cover {
    aspect-ratio: 4 / 5;
}

.book-card--list .book-card__title {
    font-size: 16px;
}

.book-card--list .book-card__body {
    padding: 14px;
}

.book-card--list .book-card__footer {
    margin-top: 2px;
}

.book-card--grid .book-card__cover {
    aspect-ratio: 3 / 4;
}

@media (max-width: 920px) {
    .book-card--list {
        grid-template-columns: 88px minmax(0, 1fr);
    }
}

@media (max-width: 560px) {
    .book-card--list {
        grid-template-columns: 1fr;
    }

    .book-card--list .book-card__cover {
        max-width: 180px;
    }

    .book-card__body {
        padding: 14px;
    }

    .book-card__title {
        font-size: 17px;
    }
}