:root {
  --pdf-shadow: 0 18px 48px rgba(28, 26, 23, .08);
}
.pdf-shell { max-width: 1040px; margin: 0 auto; padding: clamp(36px, 6vw, 72px) var(--space-5) 80px; }
.pdf-kicker { margin: 0 0 14px; color: var(--color-text-link); font: 600 12px/1 var(--font-ui); letter-spacing: .12em; text-transform: uppercase; }
.pdf-shell h1 { margin: 0 0 12px; font-size: clamp(2.25rem, 5vw, 3.8rem); letter-spacing: -.045em; }
.pdf-lede { max-width: 700px; margin: 0 0 30px; color: var(--color-text-secondary); font: 400 17px/1.65 var(--font-ui); }
.pdf-tool-card { overflow: hidden; border: 1px solid var(--color-border-default); border-radius: var(--radius-lg); background: var(--color-bg-overlay); box-shadow: var(--pdf-shadow); }
.pdf-tool-body { padding: clamp(18px, 4vw, 34px); }
.pdf-drop { position: relative; display: grid; place-items: center; min-height: 154px; padding: 24px; border: 1.5px dashed var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-bg-base); text-align: center; cursor: pointer; transition: border-color .18s, background .18s; }
.pdf-drop:hover, .pdf-drop:focus-visible, .pdf-drop.is-over { border-color: var(--color-accent); background: var(--color-accent-soft); }
.pdf-drop input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.pdf-drop-title { font: 500 1.08rem/1.35 var(--font-display); }
.pdf-drop-help { margin: 6px 0 0; color: var(--color-text-muted); font-size: 12.5px; }
.pdf-drop-icon { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 10px; border-radius: 50%; color: var(--color-accent); background: var(--color-accent-soft); }
.pdf-drop-icon svg { width: 21px; height: 21px; }
.pdf-file-summary { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; padding: 11px 13px; border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-bg-base); font-size: 13px; }
.pdf-file-summary[hidden], .pdf-pages[hidden], .pdf-meta[hidden], .pdf-result[hidden], .pdf-progress[hidden] { display: none; }
.pdf-file-name { min-width: 0; overflow-wrap: anywhere; font-weight: 600; }
.pdf-file-meta { color: var(--color-text-muted); font: 12px var(--font-mono); white-space: nowrap; }
.pdf-fields { display: grid; gap: 15px; margin-top: 20px; }
.pdf-fields.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pdf-field { display: grid; gap: 6px; color: var(--color-text-secondary); font-size: 13px; }
.pdf-field label { font-weight: 600; color: var(--color-text-primary); }
.pdf-field input, .pdf-field select, .pdf-field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--color-border-default); border-radius: var(--radius-sm); background: var(--color-bg-overlay); }
.pdf-field textarea { min-height: 190px; resize: vertical; line-height: 1.55; }
.pdf-field small { color: var(--color-text-muted); font-size: 12px; line-height: 1.45; }
.pdf-action-row { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 20px; }
.pdf-action-row .btn { min-height: 44px; }
.pdf-progress { height: 5px; margin-top: 19px; overflow: hidden; border-radius: 99px; background: var(--color-border-subtle); }
.pdf-progress-bar { width: 0; height: 100%; border-radius: inherit; background: var(--color-accent); transition: width .2s ease; }
.pdf-status { min-height: 24px; margin-top: 13px; color: var(--color-text-secondary); font-size: 13px; line-height: 1.5; }
.pdf-status[data-tone=error] { color: var(--color-error); }
.pdf-status[data-tone=success] { color: var(--color-success); }
.pdf-status[data-tone=info] { color: var(--color-text-secondary); }
.pdf-disclosure { display: flex; align-items: flex-start; gap: 8px; margin: 22px 0 0; color: var(--color-text-muted); font-size: 12px; line-height: 1.6; }
.pdf-disclosure svg { flex: 0 0 auto; width: 16px; height: 16px; margin-top: 2px; color: var(--color-success); }
.pdf-disclosure a { color: var(--color-text-link); text-decoration: underline; text-underline-offset: 2px; }
.pdf-result { margin-top: 25px; padding: 16px; border-radius: var(--radius-md); background: var(--color-accent-soft); }
.pdf-result h2 { margin: 0 0 5px; font-size: 1.02rem; }
.pdf-result-list { display: grid; gap: 8px; margin-top: 12px; }
.pdf-result-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid color-mix(in srgb, var(--color-border-default) 75%, transparent); }
.pdf-result-row:last-child { border-bottom: 0; }
.pdf-result-row span { min-width: 0; overflow-wrap: anywhere; color: var(--color-text-secondary); font-size: 13px; }
.pdf-result-row .btn { flex: 0 0 auto; min-height: 38px; }
.pdf-preview { max-height: 270px; overflow: auto; margin: 10px 0 0; padding: 10px; border: 1px solid var(--color-border-default); border-radius: var(--radius-sm); background: var(--color-bg-raised); white-space: pre-wrap; color: var(--color-text-secondary); font: 12px/1.5 var(--font-mono); }
.pdf-pages { margin-top: 26px; }
.pdf-pages h2 { margin: 0 0 5px; font-size: 1.2rem; }
.pdf-pages-help { margin: 0 0 12px; color: var(--color-text-secondary); font-size: 13px; line-height: 1.55; }
.pdf-page-list { display: grid; gap: 8px; }
.pdf-page-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 9px; padding: 10px 11px; border: 1px solid var(--color-border-default); border-radius: var(--radius-sm); background: var(--color-bg-base); }
.pdf-page-row[aria-disabled=true] { opacity: .55; }
.pdf-page-label { min-width: 0; color: var(--color-text-primary); font-size: 13px; font-weight: 600; }
.pdf-page-source { display: block; margin-top: 2px; color: var(--color-text-muted); font-size: 11px; font-weight: 400; }
.pdf-page-actions { display: flex; flex-wrap: wrap; gap: 4px; justify-content: flex-end; }
.pdf-icon-btn { min-width: 36px; min-height: 36px; padding: 4px 8px; border: 1px solid var(--color-border-default); border-radius: var(--radius-sm); color: var(--color-text-secondary); cursor: pointer; }
.pdf-icon-btn:hover:not(:disabled) { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-accent-soft); }
.pdf-icon-btn:disabled { cursor: not-allowed; opacity: .4; }
.pdf-meta { margin-top: 25px; }
.pdf-meta-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin: 12px 0 0; }
.pdf-stat { min-width: 0; padding: 11px; border: 1px solid var(--color-border-default); border-radius: var(--radius-sm); background: var(--color-bg-base); }
.pdf-stat dt { color: var(--color-text-muted); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
.pdf-stat dd { margin: 4px 0 0; overflow-wrap: anywhere; color: var(--color-text-primary); font: 12px/1.45 var(--font-mono); }
.pdf-help { margin: 17px 0 0; color: var(--color-text-secondary); font-size: 13px; line-height: 1.6; }
.pdf-article { max-width: 720px; margin: 48px auto 0; }
.pdf-article h2 { margin: 0 0 12px; font-size: 1.35rem; }
.pdf-article p, .pdf-article li { color: var(--color-text-secondary); font-size: 14px; line-height: 1.7; }
.pdf-article ul { padding-left: 20px; }
.pdf-hub-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; margin-top: 26px; }
.pdf-hub-card { display: flex; min-height: 136px; flex-direction: column; justify-content: space-between; gap: 12px; padding: 17px; border: 1px solid var(--color-border-default); border-radius: var(--radius-md); background: var(--color-bg-overlay); transition: transform .18s, border-color .18s, background .18s; }
.pdf-hub-card:hover { transform: translateY(-2px); border-color: var(--color-accent); background: var(--color-bg-raised); }
.pdf-hub-card h2 { font-size: 1.05rem; }
.pdf-hub-card p { color: var(--color-text-secondary); font-size: 13px; line-height: 1.5; }
.pdf-hub-card span { color: var(--color-text-link); font-size: 12px; font-weight: 600; }
@media (max-width: 760px) { .pdf-hub-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .pdf-fields.two, .pdf-meta-grid, .pdf-hub-grid { grid-template-columns: 1fr; } .pdf-file-summary { align-items: flex-start; flex-direction: column; } .pdf-page-row { grid-template-columns: auto minmax(0, 1fr); } .pdf-page-actions { grid-column: 1 / -1; justify-content: flex-start; } }
@media (prefers-reduced-motion: reduce) { .pdf-drop, .pdf-progress-bar, .pdf-hub-card { transition: none; } }