/* Standalone library parity with the existing Apple tokens, without a runtime dependency. */
:root {
    --library-ink: #1d1d1f;
    --library-muted: #6e6e73;
    --library-line: #d1d1d6;
    --library-background: #fff;
    --library-soft: #f2f2f7;
    --library-link: #0056d3;
    --library-font: -apple-system, BlinkMacSystemFont, "SF Pro Display",
        sans-serif;
    --library-space: 0.75rem;
    --library-radius: 0.5rem;
}
* {
    box-sizing: border-box;
}
body.library {
    margin: 0;
    background: var(--library-background);
    color: var(--library-ink);
    font: 1rem/1.6 var(--library-font);
}
.library a {
    color: var(--library-link);
    text-underline-offset: 0.2em;
}
.library a:hover {
    text-decoration-thickness: 0.13em;
}
.library :focus-visible {
    outline: 3px solid var(--library-link);
    outline-offset: 4px;
}
.library [hidden] {
    display: none !important;
}
.library-shell {
    max-width: 76rem;
    margin: auto;
    padding: 0 2rem;
}
.library-header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--library-line);
}
.library-brand {
    font-size: 1.25rem;
    font-weight: 650;
}
.library-header h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin: 1.25rem 0 0.5rem;
    font-weight: 600;
}
.library-header p {
    margin: 0;
    color: var(--library-muted);
    max-width: 65ch;
}
.library-layout {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 3rem;
    padding: 2rem 0;
}
.library-filters {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.library-filters label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-weight: 550;
}
.library-filters select,
.library-filters input,
.library-filters button {
    font: inherit;
    min-width: 0;
    min-height: 2.75rem;
    border: 1px solid var(--library-line);
    border-radius: var(--library-radius);
    background: var(--library-background);
    padding: 0.55rem 0.65rem;
    color: var(--library-ink);
    width: 100%;
}
.library-filters button {
    color: var(--library-link);
    cursor: pointer;
}
.library-results-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--library-line);
    padding-bottom: 1rem;
}
.library-results-heading h2 {
    font-size: 1.25rem;
    margin: 0;
    font-weight: 600;
}
.library-status {
    color: var(--library-muted);
    white-space: nowrap;
}
.library-guide {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--library-line);
}
.library-guide h3 {
    margin: 0 0 0.5rem;
    font-size: 1.375rem;
    line-height: 1.3;
    font-weight: 600;
}
.library-guide h3 a {
    text-decoration: none;
}
.library-guide h3 a:hover {
    text-decoration: underline;
}
.library-guide p {
    margin: 0 0 0.75rem;
    max-width: 70ch;
}
.library-guide .guide-audience {
    color: var(--library-muted);
    font-size: 0.9rem;
}
.guide-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.library-empty {
    padding: 2rem 0;
    max-width: 55ch;
}
.library-footer {
    padding: 1.5rem 0;
    border-top: 1px solid var(--library-line);
    color: var(--library-muted);
    font-size: 0.9rem;
}
.library-skip {
    position: absolute;
    left: -9999px;
}
.library-skip:focus {
    left: 1rem;
    top: 1rem;
    background: var(--library-background);
    padding: 1rem;
    z-index: 2;
}
@media (max-width: 48rem) {
    .library-shell {
        padding: 0 1.25rem;
    }
    .library-layout {
        display: block;
        padding: 1.5rem 0;
    }
    .library-filters {
        display: grid;
        grid-template-columns: 1fr 1fr;
        margin-bottom: 2rem;
    }
    .library-filters .search-filter {
        grid-column: 1/-1;
    }
    .library-filters button {
        align-self: end;
    }
    .library-header h1 {
        font-size: 1.75rem;
    }
    .library-guide h3 {
        font-size: 1.25rem;
    }
}
@media (max-width: 25rem) {
    .library-filters {
        grid-template-columns: 1fr;
    }
    .library-filters .search-filter {
        grid-column: auto;
    }
}
@media screen {
    body.library-reader {
        margin: 0;
        color: var(--library-ink);
        background: var(--library-background);
        font: 1rem/1.6 var(--library-font);
    }
    .library-reader a {
        color: var(--library-link);
    }
    .library-reader :focus-visible {
        outline: 3px solid var(--library-link);
        outline-offset: 4px;
    }
    .library-reader .library-nav,
    .library-reader .download {
        max-width: 76rem;
        margin: auto;
        padding: 1.5rem 2rem;
    }
    .library-reader .page {
        width: auto;
        height: auto;
        min-height: 0;
        max-width: 76rem;
        margin: 0 auto 2rem;
        padding: 1.5rem 2rem;
        gap: 1.25rem;
        break-after: auto;
    }
    .library-reader .cover {
        background: var(--library-background);
        border-bottom: 1px solid var(--library-line);
    }
    .library-reader h1 {
        font-size: 2.25rem;
        max-width: 28ch;
        line-height: 1.2;
    }
    .library-reader h2 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    .library-reader p,
    .library-reader li {
        line-height: 1.6;
        max-width: 75ch;
    }
    .library-reader .frame {
        flex: none;
        min-height: 0;
        padding: 0.75rem;
        background: var(--library-soft);
        border-color: var(--library-line);
    }
    .library-reader .frame img {
        max-height: none;
        height: auto;
        width: auto;
        max-width: 100%;
    }
    .library-reader .result {
        border-color: var(--library-line);
    }
    .library-reader .footer {
        margin-top: 1rem;
        font-size: 0.9rem;
    }
    .library-reader .download {
        background: var(--library-soft);
    }
    .library-reader .video-link {
        max-width: 76rem;
        margin: auto;
        padding: 1.5rem 2rem;
    }
    .library-reader .brand,
    .library-reader .label {
        color: var(--library-link);
    }
    @media (max-width: 48rem) {
        .library-reader .page,
        .library-reader .library-nav,
        .library-reader .download,
        .library-reader .video-link {
            padding: 1.25rem;
        }
        .library-reader h1 {
            font-size: 1.75rem;
        }
        .library-reader h2 {
            font-size: 1.25rem;
        }
        .library-reader .header {
            gap: 0.75rem;
        }
        .library-reader .number {
            flex-basis: 2rem;
            width: 2rem;
            height: 2rem;
        }
        .library-reader .frame {
            padding: 0.25rem;
        }
    }
}
.library-demo-banner {
    margin-top: 1.5rem;
    padding: clamp(1.25rem, 3vw, 2rem);
    border-radius: var(--library-radius);
    background: var(--library-link);
    color: #fff;
}
.library-demo-banner h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    line-height: 1.2;
}
.library-demo-banner p {
    max-width: 75ch;
    margin: 0 0 0.75rem;
}
.library-demo-features {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.5rem 1.5rem;
    margin: 1.25rem 0 1.5rem;
    padding-left: 1.1rem;
}
.library-demo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.library-demo-actions a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 2.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid #fff;
    border-radius: var(--library-radius);
    font-weight: 600;
    line-height: 1.4;
    text-decoration: none;
    text-align: center;
}
.library-demo-actions .library-demo-primary {
    background: #fff;
    color: var(--library-link);
}
.library-demo-actions .library-demo-secondary {
    background: transparent;
    color: #fff;
}
.library-demo-banner a:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 4px;
}
.library-demo-actions a:hover {
    text-decoration: underline;
}
@media (max-width: 48rem) {
    .library-demo-features {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}
@media (max-width: 25rem) {
    .library-demo-features {
        grid-template-columns: minmax(0, 1fr);
    }
    .library-demo-actions a {
        width: 100%;
    }
}