.pdf-viewer .container { width: min(1280px, calc(100% - 96px)); }
.archive-link { font-size: 12px; text-decoration: none; text-underline-offset: 4px; }
.archive-link:hover { color: var(--accent); text-decoration: underline; }
.viewer-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding: 36px 0 28px; }
.viewer-heading .eyebrow { margin-bottom: 12px; }
.viewer-heading h1 { font-size: clamp(22px, 2.6vw, 36px); line-height: 1.45; letter-spacing: -.035em; overflow-wrap: anywhere; }
.description { margin: 12px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.download-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; flex-shrink: 0; border-bottom: 1px solid var(--accent); padding: 10px 0; color: var(--accent); font-size: 12px; font-weight: 600; text-decoration: none; }
.download-link:hover { color: var(--ink); border-color: var(--ink); }
.download-link span { font-size: 20px; }
.viewer { border: 1px solid var(--line); border-top-color: var(--ink); background: #eeeee7; }
.viewer-status { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 20px; color: var(--muted); font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.viewer-label { letter-spacing: .12em; }
#page-info { color: var(--accent); }
.viewer-container { position: relative; overflow: auto; padding: 0 20px 20px; min-height: 160px; max-height: 80vh; overscroll-behavior: contain; }
.page-surface { position: relative; margin: 0 auto; background: white; box-shadow: 0 4px 16px #25292412; }
#pdf-canvas { display: block; }
#pdf-links { position: absolute; inset: 0; }
#pdf-links a { position: absolute; transition: background .15s; }
#pdf-links a:hover, #pdf-links a:focus-visible { background: #b53d2726; }
.controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; background: var(--paper); border-top: 1px solid var(--line); }
.page-controls, .zoom-controls, .page-counter { display: flex; align-items: center; gap: 8px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 14px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: var(--ink); font: inherit; font-size: 12px; cursor: pointer; transition: background .15s, border-color .15s; white-space: nowrap; }
.btn:hover:not(:disabled) { background: #e7e6dc; border-color: var(--muted); }
.btn:disabled { opacity: .35; cursor: default; }
.arrow-btn { width: 46px; font-size: 20px; background: var(--ink); border-color: var(--ink); color: var(--paper); }
.arrow-btn:hover:not(:disabled) { color: var(--ink); }
.icon-btn { width: 44px; padding: 0; font-size: 20px; }
.btn:focus-visible, #page-input:focus-visible, .viewer-container:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.page-counter, #zoom-display { font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; font-variant-numeric: tabular-nums; color: var(--muted); }
.page-counter { margin: 0 6px; }
#page-input { width: 54px; height: 44px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: var(--ink); font: inherit; text-align: center; appearance: textfield; }
#page-input::-webkit-inner-spin-button, #page-input::-webkit-outer-spin-button { appearance: none; margin: 0; }
#zoom-display { min-width: 48px; text-align: center; }
.viewer-help { margin: 16px 0 0; color: var(--muted); font-size: 11px; line-height: 1.8; text-align: center; }
.viewer-help span { margin: 0 8px; }
.loading { padding: 48px 16px; text-align: center; font-size: 14px; color: var(--muted); line-height: 1.8; }
.loading.error { color: var(--accent); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (max-width: 800px) {
    .viewer-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
    .controls { flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 600px) {
    .pdf-viewer .container { width: calc(100% - 32px); }
    .masthead { gap: 12px; }
    .brand { font-size: 12px; }
    .archive-link { font-size: 10px; }
    .viewer-heading { padding: 28px 0 22px; }
    .viewer-status { padding: 12px; font-size: 10px; }
    .viewer-container { padding: 0 8px 8px; }
    .controls { padding: 12px 8px; gap: 12px; }
    .zoom-controls { justify-content: center; flex-wrap: wrap; gap: 4px; }
    .zoom-controls .btn { padding: 0 8px; font-size: 11px; }
    .zoom-controls .icon-btn { font-size: 20px; }
    #zoom-display { min-width: 40px; font-size: 11px; }
    .viewer-help { text-wrap: balance; }
}

.viewer-actions { display: flex; align-items: center; gap: 16px; }
#fullscreen-btn[hidden] { display: none; }
.viewer:fullscreen { display: flex; flex-direction: column; width: 100%; height: 100%; border: 0; }
.viewer:fullscreen .viewer-status, .viewer:fullscreen .controls { flex-shrink: 0; }
.viewer:fullscreen .viewer-container { flex: 1; min-height: 0; max-height: none; display: flex; }
.viewer:fullscreen .page-surface { flex-shrink: 0; margin: auto; }