/* Merge PDF tool. Builds on main.css + tool.css tokens. */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:#fff;padding:12px 18px;border-radius:10px;box-shadow:var(--shadow)}
.skip-link:focus{top:10px}
.pdf-wrap{position:relative;z-index:1;max-width:980px}
.pdf-tool{position:relative;padding:clamp(20px,4vw,38px);border:1px solid var(--border);border-radius:20px;background:rgba(255,255,255,.96);box-shadow:var(--shadow)}
.pdf-tool .s-eye{margin-bottom:10px;text-transform:none;letter-spacing:0}
.pdf-tool .s-title{font-size:clamp(32px,4.4vw,46px);line-height:1.05;margin-bottom:10px}
.pdf-tool .s-sub{max-width:680px;margin-bottom:20px;font-size:1rem;line-height:1.6}
.pdf-drop{padding:34px 20px;cursor:default}
.pdf-drop .drop-ttl{font-size:1.15rem}
.pdf-drop .drop-sub{font-size:.85rem}
.pdf-pick{min-height:48px;margin:10px 0 8px;padding:12px 26px;font-size:.95rem}
.pdf-tool.is-file-over{outline:3px dashed var(--teal);outline-offset:4px}
.pdf-tool.is-file-over .pdf-drop{border-color:var(--teal);background:#effbf9}
.pdf-tool.has-files .pdf-drop{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding:14px 16px}
.pdf-tool.has-files .pdf-drop .drop-ico,.pdf-tool.has-files .pdf-drop .drop-sub:last-of-type{display:none}
.pdf-tool.has-files .pdf-drop .drop-ttl{font-size:.95rem}
.pdf-tool.has-files .pdf-pick{margin:0;min-height:44px;padding:10px 18px;font-size:.875rem}
.pdf-notice{margin-top:12px;padding:11px 14px;border:1px solid #edc5bc;border-radius:10px;background:#fff5f2;color:#7d3e31;font-size:.875rem;line-height:1.5}
.pdf-workspace{margin-top:22px}
.pdf-listbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.pdf-list-title{font-size:1rem;font-weight:800}
.pdf-list-title span{color:var(--muted);font-weight:600;font-size:.85rem}
.pdf-listbar-actions{display:flex;gap:8px;flex-wrap:wrap}
.pdf-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.pdf-file{border:1px solid var(--border);border-radius:14px;background:#fff;box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s}
.pdf-file.is-error,.pdf-file.is-locked{border-color:#edc5bc;background:#fffaf9}
.pdf-file.is-expanded{border-color:#a8dcd3}
.pdf-row{display:grid;grid-template-columns:auto auto 64px minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px}
.pdf-row[draggable="true"]{cursor:grab}
.pdf-file .is-dragging,.pdf-file.is-dragging,.pdf-row.is-dragging{opacity:.45}
.pdf-file.drop-before{box-shadow:0 -4px 0 0 var(--teal)}
.pdf-file.drop-after{box-shadow:0 4px 0 0 var(--teal)}
.pdf-handle{display:grid;place-items:center;width:32px;min-height:44px;border:0;border-radius:8px;background:transparent;color:#98a2b3;font-size:15px;letter-spacing:-3px;cursor:grab}
.pdf-handle:hover,.pdf-handle:focus-visible{background:var(--s2);color:var(--text)}
.pdf-pos{display:grid;place-items:center;width:26px;height:26px;border-radius:8px;background:#e9f8f5;color:#08796e;font-size:.8rem;font-weight:900}
.pdf-thumb,.pdf-page-thumb{position:relative;display:grid;place-items:center;overflow:hidden;border:1px solid var(--border);border-radius:6px;background:linear-gradient(145deg,#f8fafc,#eef2f7)}
.pdf-thumb{width:64px;height:64px}
.pdf-thumb img,.pdf-page-thumb img{max-width:100%;max-height:100%;object-fit:contain;transform:rotate(var(--rot,0deg));transition:transform .2s;opacity:0}
.pdf-thumb.has-img img,.pdf-page-thumb.has-img img{opacity:1}
.pdf-thumb img:not([src]),.pdf-page-thumb img:not([src]){display:none}
.pdf-thumb span,.pdf-page-thumb span{position:absolute;color:#98a2b3;font-size:.7rem;font-weight:800;pointer-events:none}
.pdf-thumb.has-img span{display:none}
.pdf-thumb.is-loading span{animation:pdf-pulse 1s ease-in-out infinite;font-size:1.1rem}
.pdf-thumb.is-error span{color:#b42338;font-size:1.1rem}
@keyframes pdf-pulse{50%{opacity:.35}}
.pdf-meta{min-width:0}
.pdf-name{overflow:hidden;font-size:.95rem;font-weight:750;text-overflow:ellipsis;white-space:nowrap}
.pdf-sub{margin-top:2px;color:var(--muted);font-size:.8rem}
.pdf-sub strong{color:#08796e}
.pdf-actions{display:flex;align-items:center;gap:6px}
.pdf-icon,.pdf-pages-btn{min-width:44px;min-height:44px;border:1px solid var(--border);border-radius:9px;background:#fff;color:#344054;font-size:1rem;font-weight:800;cursor:pointer}
.pdf-pages-btn{padding:0 12px;font-size:.82rem;white-space:nowrap}
.pdf-pages-btn[aria-expanded="true"]{border-color:#a8dcd3;background:#effbf9;color:#08796e}
.pdf-icon:hover:not(:disabled),.pdf-pages-btn:hover{border-color:#a8dcd3;background:#f4fbf9}
.pdf-icon:disabled{opacity:.35;cursor:not-allowed}
.pdf-remove:hover:not(:disabled){border-color:#edc5bc;background:#fff5f2;color:#b42338}
.pdf-error{margin:0 12px 10px;padding:9px 12px;border-radius:9px;background:#fff1ee;color:#8a3324;font-size:.85rem;line-height:1.5}
.pdf-warn{margin:0 12px 10px;padding:9px 12px;border-radius:9px;background:#fff8e8;color:#704600;font-size:.85rem;line-height:1.5}
.pdf-unlock{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:0 12px 12px}
.pdf-unlock .pdf-error{flex-basis:100%;margin:0}
.pdf-unlock input{flex:1 1 200px;min-height:44px;padding:10px 12px;border:1px solid var(--border);border-radius:9px;font-size:16px}
.pdf-pages{padding:4px 12px 14px;border-top:1px dashed var(--border)}
.pdf-pages-head{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;padding:8px 2px;color:var(--muted);font-size:.82rem}
.pdf-page-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.pdf-page{display:flex;flex-direction:column;align-items:stretch;gap:6px;padding:8px;border:1px solid var(--border);border-radius:11px;background:#fbfcfe;cursor:grab}
.pdf-page.drop-before{box-shadow:-4px 0 0 0 var(--teal)}
.pdf-page.drop-after{box-shadow:4px 0 0 0 var(--teal)}
.pdf-page-thumb{width:100%;aspect-ratio:1/1;padding:4px;cursor:grab}
.pdf-page-thumb.has-img span{top:4px;left:4px;padding:1px 6px;border-radius:6px;background:rgba(23,32,51,.72);color:#fff;font-size:.68rem}
.pdf-page.is-removed{background:#f6f6f7;border-style:dashed}
.pdf-page.is-removed .pdf-page-thumb{filter:grayscale(1);opacity:.35}
.pdf-page.is-removed .pdf-page-label{color:#b42338;text-decoration:line-through}
.pdf-page-label{color:#475467;font-size:.76rem;font-weight:700;text-align:center}
.pdf-page-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.pdf-page-actions button{min-height:44px;border:1px solid var(--border);border-radius:8px;background:#fff;color:#344054;font-size:.95rem;font-weight:800;cursor:pointer}
.pdf-page-actions button:disabled{opacity:.3;cursor:not-allowed}
.pdf-page-actions button:hover:not(:disabled){border-color:#a8dcd3;background:#f4fbf9}
.pdf-page-actions .is-restore{border-color:#a8dcd3;color:#08796e}
.pdf-size-note{margin-top:10px;padding:10px 13px;border:1px solid #ead49a;border-radius:10px;background:#fffaf0;color:#6f5200;font-size:.84rem;line-height:1.55}
.pdf-mergebar{position:sticky;bottom:10px;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:16px;padding:14px 16px;border:1px solid #bfe2dc;border-radius:14px;background:rgba(244,251,249,.97);box-shadow:0 10px 26px rgba(31,42,68,.1);backdrop-filter:blur(8px)}
.pdf-summary{flex:1 1 260px;min-width:0;font-size:.92rem;font-weight:800;color:#075f56}
.pdf-outname{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:.85rem;font-weight:700;color:#344054}
.pdf-outname input{flex:1;min-width:0;max-width:360px;min-height:40px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:.9rem}
.pdf-merge{min-height:52px;padding:12px 28px;font-size:1rem}
.pdf-status{min-height:1.2em;margin-top:8px;color:#475467;font-size:.86rem}
.pdf-status:empty{display:none}
.pdf-result{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:14px;padding:16px;border:2px solid #8ecfc4;border-radius:14px;background:linear-gradient(180deg,#f5fcfa,#edf9f6)}
.pdf-result-copy{display:flex;align-items:center;gap:12px;min-width:0}
.pdf-result-check{display:grid;place-items:center;flex:0 0 38px;height:38px;border-radius:50%;background:#08796e;color:#fff;font-weight:900}
.pdf-result-title{display:block;font-size:1rem}
.pdf-result p{margin-top:2px;color:#475467;font-size:.84rem;overflow-wrap:anywhere}
.pdf-result-actions{display:flex;gap:8px;flex-wrap:wrap}
.pdf-seo{position:relative;z-index:1;max-width:980px}
.pdf-seo a:not(.seo-links a){color:#08796e;font-weight:700}
.pdf-faq{display:grid;gap:8px;margin-top:12px}
.pdf-faq details{padding:13px 16px;border:1px solid var(--border);border-radius:12px;background:#fff}
.pdf-faq summary{cursor:pointer;font-weight:750;font-size:.95rem}
.pdf-faq details p{margin-top:8px}
@media(max-width:760px){
  .pdf-row{grid-template-columns:auto 52px minmax(0,1fr);grid-template-areas:"handle thumb meta" "actions actions actions";row-gap:8px}
  .pdf-handle{grid-area:handle}
  .pdf-pos{display:none}
  .pdf-thumb{grid-area:thumb;width:52px;height:52px}
  .pdf-meta{grid-area:meta}
  .pdf-actions{grid-area:actions;justify-content:flex-end}
  .pdf-actions .pdf-pages-btn{margin-right:auto}
  .pdf-page-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pdf-mergebar{bottom:0;margin-inline:-6px;padding:10px 12px;gap:10px;flex-wrap:nowrap}
  .pdf-summary{flex:1 1 auto;font-size:.8rem;line-height:1.35}
  .pdf-merge{flex:0 0 auto;min-height:48px;padding:10px 18px}
  .pdf-outname input{max-width:none;font-size:16px}
  .pdf-result-actions,.pdf-result-actions>*{width:100%}
  .seo-grid{grid-template-columns:1fr}
}
@media(max-width:400px){
  .pdf-tool{padding:18px 14px}
  .pdf-actions{gap:4px}
  .pdf-icon{min-width:42px}
}
/* ---------- Split PDF ---------- */
.split-file{margin-bottom:16px}
.split-row{grid-template-columns:64px minmax(0,1fr) auto}
.split-file .pdf-icon{min-width:44px}
.split-modes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 14px;padding:0;border:0}
.split-modes legend{margin-bottom:10px;font-size:1rem;font-weight:800}
.split-mode{position:relative;display:block;cursor:pointer}
.split-mode input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.split-mode span{display:flex;flex-direction:column;gap:3px;height:100%;min-height:64px;padding:12px 14px;border:1.5px solid var(--border);border-radius:12px;background:#fff;transition:border-color .15s,background .15s}
.split-mode strong{font-size:.95rem}
.split-mode small{color:var(--muted);font-size:.8rem;line-height:1.35}
.split-mode input:checked+span{border-color:var(--teal);background:#effbf9;box-shadow:inset 0 0 0 1px var(--teal)}
.split-mode input:focus-visible+span{outline:3px solid #0f9f8f;outline-offset:2px}
.split-mode input:disabled+span{opacity:.6;cursor:not-allowed}
.split-ranges{margin-bottom:14px}
.split-ranges label{display:block;margin-bottom:6px;font-size:.88rem;font-weight:800}
.split-ranges input{width:100%;max-width:420px;min-height:46px;padding:10px 12px;border:1.5px solid var(--border);border-radius:10px;font-size:16px;font-family:inherit}
.split-ranges input:focus{outline:3px solid #9fded4;border-color:var(--teal)}
.split-ranges input[aria-invalid="true"]{border-color:#d0563f}
.split-help{margin-top:6px;color:var(--muted);font-size:.82rem}
.split-ranges .pdf-error{margin:8px 0 0;max-width:560px}
.split-select{display:flex;align-items:center;justify-content:space-between;gap:10px 16px;flex-wrap:wrap;margin-bottom:14px}
.split-select-actions{display:flex;gap:8px;flex-wrap:wrap}
.split-check{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:.88rem;font-weight:650;cursor:pointer}
.split-check input{width:18px;height:18px;accent-color:#0f9f8f}
.split-grid-title{margin:4px 0 10px}
.split-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;max-height:min(70vh,760px);overflow:auto;padding:4px;border-radius:12px}
.split-page-box{position:relative;display:flex;flex-direction:column;align-items:stretch;gap:6px;width:100%;padding:8px;border:1.5px solid var(--border);border-radius:11px;background:#fbfcfe;font:inherit;color:inherit;text-align:center}
button.split-page-box{cursor:pointer}
button.split-page-box:hover{border-color:#a8dcd3}
button.split-page-box:focus-visible{outline:3px solid #0f9f8f;outline-offset:2px}
.split-page-box .pdf-page-thumb{cursor:inherit;border:1px solid var(--border)}
.split-page-label{color:#475467;font-size:.76rem;font-weight:700}
.split-tick{position:absolute;top:6px;right:6px;display:grid;place-items:center;width:26px;height:26px;border:2px solid #cbd5e1;border-radius:50%;background:#fff;color:transparent;font-size:.8rem;font-weight:900}
.split-page.is-selected .split-page-box{border-color:var(--teal);background:#effbf9;box-shadow:inset 0 0 0 1px var(--teal)}
.split-page.is-selected .split-tick{border-color:#08796e;background:#08796e;color:#fff}
.split-page.is-selected .split-page-label{color:#075f56}
.split-page.is-excluded .pdf-page-thumb{filter:grayscale(1);opacity:.4}
.split-page.is-excluded .split-page-label{color:#667085}
.split-output{display:flex;align-items:center;gap:6px 18px;flex-wrap:wrap;margin:14px 0 0;padding:0;border:0}
.split-output legend{float:left;margin-right:6px;font-size:.88rem;font-weight:800}
.split-result{align-items:flex-start}
.split-files{flex-basis:100%;margin-top:4px}
.split-files summary{cursor:pointer;font-size:.88rem;font-weight:750;color:#075f56;min-height:32px}
.split-file-list{display:grid;gap:6px;max-height:280px;overflow:auto;margin:8px 0 0;padding-left:22px;font-size:.86rem}
.split-file-list a{color:#08796e;font-weight:700;overflow-wrap:anywhere}
.split-file-list span{color:var(--muted);font-size:.8rem}
@media(max-width:760px){
  .split-modes{grid-template-columns:1fr;gap:8px}
  .split-mode span{min-height:56px}
  .split-row{grid-template-columns:52px minmax(0,1fr);grid-template-areas:"thumb meta" "actions actions"}
  .split-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-height:none;overflow:visible;padding:2px}
  .split-page-box{padding:5px}
  .split-tick{width:22px;height:22px;top:4px;right:4px}
}
@media(max-width:360px){.split-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Persistent export limitations are separate from dismissible validation notices. */
.pdf-export-note{margin-top:14px;padding:12px 14px;border:1px solid #ead49a;border-radius:10px;background:#fffaf0;color:#6f5200;font-size:.875rem;line-height:1.55}
.pdf-cancel{min-height:44px;margin-top:12px}