.library-resource-actions { display: flex; align-items: center; flex-shrink: 0; flex-wrap: wrap; gap: 12px; }
.library-preview, .library-resource-actions .library-download {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 44px; padding: 9px 14px; font-size: .9rem; font-weight: 700;
    text-decoration: none; border-radius: 9px;
}
.library-preview { color: var(--green); background: var(--green-3); border: 1px solid var(--green); }
.library-preview:hover { background: #cfe6d5; }
.library-resource-actions .library-download:hover { text-decoration: underline; }
.library-resource-actions a:focus-visible, .pdf-preview :is(button, a, summary):focus-visible {
    outline: 3px solid var(--green-2); outline-offset: 3px;
}
body.pdf-preview-open { overflow: hidden; }
.pdf-preview {
    width: min(1100px, calc(100% - 32px)); height: min(920px, calc(100dvh - 32px));
    max-width: none; max-height: none; padding: 0; border: 1px solid var(--line);
    border-radius: 18px; background: var(--paper); color: var(--ink);
    box-shadow: 0 24px 80px #15201a40; overflow: hidden;
}
.pdf-preview[open] { display: flex; flex-direction: column; }
.pdf-preview::backdrop { background: #0b201ac9; }
.pdf-preview [hidden] { display: none !important; }
.pdf-preview-header { display: flex; align-items: flex-start; gap: 16px; padding: 20px 24px 16px; border-bottom: 1px solid var(--line); }
.pdf-preview-heading { flex: 1; min-width: 0; }
.pdf-preview-eyebrow { margin: 0 0 6px; color: var(--green); font-size: .75rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.pdf-preview h2 { font-size: 1.15rem; line-height: 1.4; overflow-wrap: anywhere; }
.pdf-preview-filename { margin: 5px 0 0; color: var(--muted); font-size: .82rem; overflow-wrap: anywhere; }
.pdf-preview button, .pdf-preview a { font: inherit; }
.pdf-preview button {
    min-height: 44px; min-width: 44px; padding: 8px 12px; border: 1px solid var(--line);
    border-radius: 8px; background: var(--paper); color: var(--ink); cursor: pointer; font-weight: 700;
}
.pdf-preview button:hover:enabled { background: var(--green-3); }
.pdf-preview button:disabled { opacity: .4; cursor: default; }
.pdf-preview-close { flex-shrink: 0; }
.pdf-preview-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding: 10px 24px; border-bottom: 1px solid var(--line); }
.pdf-preview-controls { display: flex; align-items: center; gap: 8px; }
.pdf-preview-page-label { min-width: 105px; text-align: center; font-size: .85rem; font-variant-numeric: tabular-nums; }
.pdf-preview-zoom-label { min-width: 45px; font-size: .8rem; text-align: center; font-variant-numeric: tabular-nums; }
.pdf-preview-body { flex: 1; min-height: 0; overflow: auto; scrollbar-gutter: stable; overscroll-behavior: contain; background: #e9eee9; padding: 24px; }
.pdf-preview-header, .pdf-preview-toolbar, .pdf-preview-footer { flex-shrink: 0; }
.pdf-preview-page { width: max-content; min-width: 100%; }
.pdf-preview canvas { display: block; margin: auto; background: white; box-shadow: 0 2px 14px #15201a20; }
.pdf-preview-status { max-width: 420px; margin: 48px auto; text-align: center; }
.pdf-preview-status p { margin: 8px 0 16px; color: var(--muted); }
.pdf-preview-status h3 { font-size: 1.1rem; line-height: 1.5; }
.pdf-preview-text { max-width: 720px; margin: 20px auto 0; padding: 12px 16px; background: var(--paper); border-radius: 8px; }
.pdf-preview-text summary { min-height: 44px; display: list-item; align-content: center; cursor: pointer; color: var(--green); font-weight: 700; }
.pdf-preview-text-content { white-space: pre-wrap; overflow-wrap: anywhere; }
.pdf-preview-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 12px 24px; border-top: 1px solid var(--line); }
.pdf-preview-footer a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; font-size: .85rem; font-weight: 700; text-underline-offset: 3px; }
.pdf-preview-native { color: var(--green); }
.pdf-preview-download { background: var(--green); color: white; border-radius: 8px; padding: 9px 18px; text-decoration: none; }
.pdf-preview-download:hover { background: var(--deep); }
@media (max-width: 760px) {
    .library-resource-actions { width: 100%; gap: 8px; }
    .library-resource-actions a { flex: 1; }
    .pdf-preview { width: 100%; height: 100dvh; margin: 0; border: 0; border-radius: 0; }
    .pdf-preview-header { padding: max(14px, env(safe-area-inset-top)) 14px 12px; gap: 10px; }
    .pdf-preview h2 { font-size: 1rem; }
    .pdf-preview-toolbar { padding: 8px 12px; justify-content: center; }
    .pdf-preview-body { padding: 12px; }
    .pdf-preview-footer { padding: 10px 14px max(10px, env(safe-area-inset-bottom)); }
}