/* ───────── Toolbar (list) ───────── */
.bk-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 22px 0 20px;
    flex-wrap: wrap;
}

.bk-count {
    font-size: 14px;
    color: var(--tg-ink-2);
    font-weight: 600;
}

.bk-tools-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.bk-filterbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.bk-fchip {
    border: 1px solid var(--tg-line);
    background: #fff;
    cursor: pointer;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--tg-ink-2);
    font-family: inherit;
}

.bk-fchip:hover {
    border-color: var(--tg-accent);
    color: var(--tg-accent);
}

.bk-fchip.active {
    background: var(--tg-accent);
    border-color: var(--tg-accent);
    color: #fff;
}

.bk-select {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    background: #fff;
    border: 1px solid var(--tg-line);
    border-radius: 11px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--tg-ink);
    cursor: pointer;
}

.bk-select:hover {
    border-color: #cdd5e0;
}

.bk-select .chev {
    color: var(--tg-ink-3);
}

.bk-select .menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 40;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--tg-line);
    border-radius: 12px;
    box-shadow: var(--tg-shadow-pop);
    padding: 5px;
}

.bk-select .menu .opt {
    padding: 9px 11px;
    border-radius: 8px;
    font-size: 13.5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bk-select .menu .opt:hover {
    background: #f4f6fa;
}

.bk-select .menu .opt.active {
    background: var(--tg-accent-soft);
    color: var(--tg-accent-dark);
    font-weight: 700;
}

/* ───────── Author grid ───────── */
.bk-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

@media (max-width: 980px) {
    .bk-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 660px) {
    .bk-grid {
        grid-template-columns: 1fr;
    }
}

.bk-card {
    background: #fff;
    border: 1px solid var(--tg-line);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--tg-shadow-card);
    transition: transform .15s, box-shadow .15s;
}

.bk-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 34px rgba(16, 24, 40, .12);
}

.bk-card .photo {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 46px;
    font-weight: 800;
    letter-spacing: .02em;
}

.bk-card .photo .fav {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    background: rgba(255, 255, 255, .9);
    color: var(--tg-ink-2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.bk-card .photo .fav.on {
    color: var(--tg-red);
}

.bk-card .photo .fav:hover {
    background: #fff;
}

.bk-card .photo .online {
    position: absolute;
    left: 12px;
    top: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, .92);
    border-radius: 999px;
    padding: 4px 10px 4px 8px;
    font-size: 12px;
    font-weight: 700;
    color: #1c8a4a;
}

.bk-card .photo .online .d {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #2ca25f;
}

.bk-card .body {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.bk-card .name-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.bk-card .name {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -.01em;
}

.bk-card .rating {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 700;
    color: var(--tg-ink);
    flex-shrink: 0;
}

.bk-card .rating svg {
    color: #f5b544;
}

.bk-card .rating.new {
    color: var(--tg-accent);
}

.bk-card .meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13.5px;
    color: var(--tg-ink-2);
}

.bk-card .meta .m {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.bk-card .meta .price {
    color: var(--tg-ink);
    font-weight: 700;
}

.bk-card .desc {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--tg-ink-2);
}

.bk-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.bk-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 9px;
    border-radius: 8px;
    background: #eef2f8;
    color: #4a5261;
}

.bk-tag.lang {
    background: #eaf3fe;
    color: var(--tg-accent-dark);
}

.bk-tag.subj {
    background: #eaf7ee;
    color: #1c8a4a;
}

.bk-card .actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
    padding-top: 6px;
}

.bk-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 14px;
    border-radius: 11px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    border: 1px solid var(--tg-line);
    background: #fff;
    color: var(--tg-ink);
}

.bk-btn:hover {
    border-color: #cdd5e0;
}

.bk-btn.primary {
    background: var(--tg-accent);
    border-color: var(--tg-accent);
    color: #fff;
}

.bk-btn.primary:hover {
    background: var(--tg-accent-dark);
}

.bk-btn.ghost {
    background: transparent;
}

.bk-btn.lg {
    padding: 14px 20px;
    font-size: 15px;
}

.bk-btn.block {
    width: 100%;
    flex: none;
}

.bk-btn.danger {
    background: var(--tg-red);
    border-color: var(--tg-red);
    color: #fff;
}

.bk-empty-list {
    grid-column: 1 / -1;
    color: var(--tg-ink-2);
}