/* ─── Раскладка ───────────────────────────────────────────── */


h1 {
    font-family:  "CourierCyrPS-Bold", "Courier", monospace;
    color: var(--page-text-color);
}

.library-layout {
    margin-top: 25px;
    width: 100%;
}


.library-lists {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 40px 40px;
    width: 100%;
}


/* ─── Тема ────────────────────────────────────────────────── */

.book-topic h2 {
    font-weight: 700;
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--page-text-color);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--light-border-color);
}


/* ─── Список книг ─────────────────────────────────────────── */

.book-list {
    display: flex;
    flex-direction: column;
}

.book-item {
    display: flex;
    align-items: center;
    width: 100%;
    border-bottom: none;
}


.book-link {
    padding: 9px 2px;
    color: var(--page-text-color);
    font-size: 18px;
    line-height: 1.4;
    text-decoration: underline;
    letter-spacing: 0.5px;
    transition: color var(--transition-fast);
    margin-right: 10px;
}

.book-link:hover {
    color: var(--accent-color);
}

.book-link:focus-visible {
    outline: solid var(--accent-color);
}


/* ─── Кнопка "подробнее" ──────────────────────────────────── */

.book-show-btn {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: none;
    color: var(--text-muted-color);
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    margin-left: auto;
}

.book-show-btn.active,
.book-show-btn.active:hover {
    border: 2px solid;
}

.book-show-btn:hover,
.book-show-btn:focus-visible {
    color: var(--accent-color);
    background-color: var(--highlight-color);
    outline: none;
}


.book-info {
    display: none;
}

.book-info-popup {
    display: none;
    position: absolute;
    color: var(--page-text-color);

    max-width: 420px;
    min-width: 260px;

    padding: 16px;

    background: var(--card-background);
    border: 1px solid var(--border-primary);
    border-radius: 10px;

    box-shadow: 0 12px 35px rgba(0,0,0,.18);

    z-index: 100;

    opacity: 0;
    visibility: hidden;

    transition: opacity .15s;
}

.book-info-popup.visible {
    display: block;
    opacity: 1;
    visibility: visible;
}

.book-info-popup p {
    margin: 0 0 10px;
    word-break: normal;
    overflow-wrap: break-word;
    hyphens: auto;
}

.book-info-popup p:last-child {
    margin-bottom: 0;
}


/* ─── Адаптив ─────────────────────────────────────────────── */

@media (max-width: 800px) {
     .library-lists {
        grid-template-columns: 1fr;
        gap: 32px;
    }


    .book-info-popup {
        left: 50% !important;
        transform: translate(-50%, 0);
        width: calc(100% - 32px);
        max-width: 420px;
    }
}