.bookshelf-page,
.bookshelf-reader {
    width: min(1120px, 100%);
    margin: 0 auto var(--spacing-6);
}

.bookshelf-page {
    display: grid;
    gap: var(--spacing-5);
}

.bookshelf-search {
    display: grid;
    gap: var(--spacing-2);
    margin: 0;
}

.bookshelf-search > label,
.bookshelf-book__format,
.bookshelf-reader__metadata dt,
.bookshelf-aside dt,
.bookshelf-chapter > header > p {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
}

.bookshelf-search__control {
    position: relative;
    min-height: 3rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border-strong);
}

.bookshelf-search__control:focus-within {
    border-bottom-color: var(--color-primary);
    box-shadow: 0 1px 0 var(--color-primary);
}

.bookshelf-search__control input {
    width: 100%;
    min-width: 0;
    min-height: 3rem;
    padding: 0.55rem 3rem 0.55rem 0;
    border: 0;
    background: transparent;
    color: var(--color-text);
}

.bookshelf-search__control input:focus {
    outline: 0;
}

.bookshelf-search__control .icon-button {
    position: absolute;
    right: 0;
    width: 2.75rem;
    min-width: 2.75rem;
    min-height: 2.75rem;
}

.bookshelf-results {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
    color: var(--color-text-muted);
}

.bookshelf-results p {
    margin: 0;
}

.bookshelf-inventory {
    border-top: 1px solid var(--color-border-strong);
}

.bookshelf-book {
    position: relative;
    display: grid;
    grid-template-columns: 6rem minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--spacing-4);
    min-height: 9rem;
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--color-border);
}

.bookshelf-book__cover,
.bookshelf-book__monogram {
    width: 6rem;
    height: 8rem;
    display: grid;
    place-items: center;
    border: 1px solid var(--color-border-strong);
}

.bookshelf-book__cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bookshelf-book__monogram {
    color: var(--color-primary-link);
    font-family: var(--font-family), serif;
    font-size: 2.75rem;
    font-weight: 700;
}

.bookshelf-book__body {
    min-width: 0;
}

.bookshelf-book__format {
    margin: 0 0 var(--spacing-1);
}

.bookshelf-book h2 {
    margin: 0;
    font-size: clamp(1.25rem, 2.2vw, 1.75rem);
}

.bookshelf-book h2 a {
    color: var(--color-text);
    text-decoration: none;
}

.bookshelf-book h2 a:hover,
.bookshelf-book h2 a:focus-visible {
    color: var(--color-primary-link);
}

.bookshelf-book__authors {
    margin: var(--spacing-1) 0 0;
    color: var(--color-text-mid);
    font-style: italic;
}

.bookshelf-book__body > p:not(.bookshelf-book__format, .bookshelf-book__authors) {
    max-width: 70ch;
    margin: var(--spacing-2) 0 0;
    color: var(--color-text-mid);
}

.bookshelf-book__meta,
.bookshelf-book__topics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.bookshelf-book__meta span:not(:last-child)::after {
    content: '·';
    margin-left: var(--spacing-2);
}

.bookshelf-book__topics span {
    padding: 0.2rem 0.45rem;
    border: 1px solid var(--color-border);
}

.bookshelf-book__open,
.bookshelf-reader__back,
.bookshelf-reader__source,
.bookshelf-aside > a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.bookshelf-book__open {
    white-space: nowrap;
}

.bookshelf-book__actions {
    display: grid;
    justify-items: end;
    gap: var(--spacing-2);
}

.bookshelf-directory-action {
    white-space: nowrap;
    justify-self: start;
}

.bookshelf-directory-action.is-active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-text-contrast);
}

.bookshelf-directory-action:disabled {
    opacity: 0.7;
    cursor: wait;
}

.bookshelf-book__open .icon,
.bookshelf-reader__back .icon,
.bookshelf-reader__source .icon,
.bookshelf-aside .icon {
    width: 1rem;
    height: 1rem;
}

.bookshelf-notice,
.bookshelf-empty,
.bookshelf-start,
.bookshelf-unavailable {
    padding: var(--spacing-5);
    border: 1px solid var(--color-border-strong);
}

.bookshelf-notice {
    border-left: 3px solid var(--color-primary);
}

.bookshelf-notice h2,
.bookshelf-notice p,
.bookshelf-empty h2,
.bookshelf-empty p,
.bookshelf-start h2,
.bookshelf-start p,
.bookshelf-unavailable h1,
.bookshelf-unavailable p {
    margin: 0;
}

.bookshelf-notice p,
.bookshelf-empty p,
.bookshelf-start p,
.bookshelf-unavailable p {
    margin-top: var(--spacing-2);
    color: var(--color-text-mid);
}

.bookshelf-empty,
.bookshelf-start,
.bookshelf-unavailable {
    text-align: center;
}

.bookshelf-empty > .icon,
.bookshelf-start > .icon,
.bookshelf-unavailable > .icon {
    width: 2rem;
    height: 2rem;
    margin-bottom: var(--spacing-3);
    color: var(--color-primary);
}

.bookshelf-unavailable .btn {
    margin-top: var(--spacing-4);
}

.bookshelf-reader {
    display: grid;
    gap: var(--spacing-5);
}

.bookshelf-reader__back {
    width: fit-content;
    color: var(--color-text-mid);
    text-decoration: none;
}

.bookshelf-reader__header {
    padding-bottom: var(--spacing-5);
    border-bottom: 1px solid var(--color-border-strong);
}

.bookshelf-reader__header h1 {
    max-width: 20ch;
    margin: var(--spacing-2) 0;
    font-size: clamp(2.25rem, 6vw, 4.75rem);
    line-height: 1;
}

.bookshelf-reader__authors {
    margin: 0;
    color: var(--color-text-mid);
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-style: italic;
}

.bookshelf-reader__summary {
    max-width: 65ch;
    margin: var(--spacing-4) 0 0;
    color: var(--color-text-mid);
    font-size: var(--font-size-lg);
}

.bookshelf-reader__metadata,
.bookshelf-aside dl {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-5);
    margin: var(--spacing-5) 0 0;
}

.bookshelf-reader__metadata div,
.bookshelf-aside dl div {
    display: grid;
    gap: var(--spacing-1);
}

.bookshelf-reader__metadata dd,
.bookshelf-aside dd {
    margin: 0;
    color: var(--color-text);
}

.bookshelf-reader__source {
    margin-top: var(--spacing-4);
}

.bookshelf-toc {
    border-block: 1px solid var(--color-border);
}

.bookshelf-toc summary {
    padding: var(--spacing-3) 0;
    cursor: pointer;
    color: var(--color-text);
    font-weight: 700;
}

.bookshelf-toc ol {
    columns: 2 20rem;
    margin: 0 0 var(--spacing-4);
    padding-left: 1.5rem;
}

.bookshelf-toc li {
    break-inside: avoid;
    padding: 0.25rem var(--spacing-3) 0.25rem 0;
}

.bookshelf-toc li span {
    margin-left: var(--spacing-1);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.bookshelf-chapters {
    display: grid;
    gap: var(--spacing-7);
}

.bookshelf-chapter {
    width: min(76ch, 100%);
    margin: 0 auto;
    scroll-margin-top: calc(var(--header-height, 4rem) + var(--spacing-4));
}

.bookshelf-chapter:not(:first-child) {
    padding-top: var(--spacing-7);
    border-top: 3px double var(--color-border-strong);
}

.bookshelf-chapter > header {
    margin-bottom: var(--spacing-5);
}

.bookshelf-chapter > header > p {
    margin: 0 0 var(--spacing-1);
}

.bookshelf-chapter > header h2 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.bookshelf-chapter > header h2 + p {
    margin-top: var(--spacing-2);
    color: var(--color-text-mid);
    font-size: var(--font-size-lg);
}

.bookshelf-chapter__content {
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    line-height: 1.8;
}

.bookshelf-chapter__content h1,
.bookshelf-chapter__content h2,
.bookshelf-chapter__content h3,
.bookshelf-chapter__content h4 {
    margin-top: 1.8em;
}

.bookshelf-chapter__content img {
    max-width: 100%;
    height: auto;
}

.bookshelf-chapter__content pre {
    overflow-x: auto;
}

.bookshelf-chapter__missing {
    padding: var(--spacing-4);
    border: 1px dashed var(--color-border-strong);
    color: var(--color-text-muted);
}

.bookshelf-aside {
    display: grid;
    gap: var(--spacing-3);
}

.bookshelf-aside h2,
.bookshelf-aside p {
    margin: 0;
}

.bookshelf-aside > p:not(.eyebrow) {
    color: var(--color-text-mid);
}

.bookshelf-aside dl {
    display: grid;
    gap: var(--spacing-3);
    margin: 0;
}

.bookshelf-aside dl div {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--color-border);
}

@media (max-width: 760px) {
    .bookshelf-intro {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }

    .bookshelf-book {
        grid-template-columns: 4.5rem minmax(0, 1fr);
        align-items: start;
    }

    .bookshelf-book__cover,
    .bookshelf-book__monogram {
        width: 4.5rem;
        height: 6rem;
    }

    .bookshelf-book__monogram {
        font-size: 2rem;
    }

    .bookshelf-book__open {
        grid-column: 2;
        padding: 0;
    }

    .bookshelf-book__actions {
        grid-column: 2;
        justify-items: start;
    }

    .bookshelf-reader__metadata {
        gap: var(--spacing-3) var(--spacing-5);
    }
}

@media (max-width: 520px) {
    .bookshelf-results {
        align-items: flex-start;
        flex-direction: column;
    }

    .bookshelf-toc ol {
        columns: 1;
    }
}

@media print {
    .app-shell__sidebar,
    .app-shell__context,
    .bookshelf-reader__back,
    .bookshelf-toc,
    .back-to-top-btn,
    footer {
        display: none !important;
    }

    .app-shell {
        display: block;
    }

    .bookshelf-chapter {
        break-before: page;
    }
}