/* แปลงพีดีเอฟ — paper desk: warm desk, white sheets, ink text, one red pen for links and focus */
:root{
  --desk:#f6f3ee;--sheet:#fff;--ink:#1d1b18;--ink2:#4a4640;--mute:#6b665e;--rule:#e2ddd4;--rule2:#cfc8bc;
  --pen:#b42318;--pen-ink:#fff;--pen-soft:#fbe9e7;--ok:#1f6b3a;--ok-soft:#e5f3ea;--bad:#a1260f;--bad-soft:#fdecea;
  --shadow:0 1px 0 rgba(29,27,24,.06),0 6px 18px -10px rgba(29,27,24,.25);
  --r:10px;--font:"Leelawadee UI","Noto Sans Thai","Sarabun","Tahoma",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{--desk:#191816;--sheet:#23211e;--ink:#ece8e1;--ink2:#cfc9bf;--mute:#a59f95;--rule:#37342f;--rule2:#4a463f;
    --pen:#ff8a7a;--pen-ink:#1d0f0c;--pen-soft:#3a2420;--ok:#7fd49b;--ok-soft:#1f3326;--bad:#ff9a8a;--bad-soft:#3b2220;
    --shadow:0 1px 0 rgba(0,0,0,.4),0 8px 20px -12px rgba(0,0,0,.7);color-scheme:dark}
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--desk);color:var(--ink);font:400 1rem/1.7 var(--font);overflow-wrap:break-word}
img,svg{max-width:100%;height:auto}
a{color:var(--pen);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--pen);outline-offset:2px;border-radius:4px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:var(--desk);padding:10px 14px;border-radius:6px;z-index:9;text-decoration:none}
.skip:focus{top:12px}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}

/* header */
.top{background:var(--sheet);border-bottom:1px solid var(--rule)}
.top .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:4px 20px;min-height:60px;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;font-size:1.12rem;min-height:44px}
.brand svg{width:30px;height:30px;flex:none}
.nav{display:flex;flex-wrap:wrap;gap:2px;margin-left:auto}
.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border-radius:8px;color:var(--ink2);text-decoration:none;font-size:.97rem}
.nav a:hover{background:var(--desk);color:var(--ink)}
.nav a[aria-current=page]{color:var(--ink);font-weight:700;box-shadow:inset 0 -3px 0 var(--pen)}
@media (max-width:640px){.nav{margin-left:-12px;width:calc(100% + 12px)}.nav a{padding:0 10px;font-size:.93rem}}

/* page head */
.crumbs{font-size:.88rem;color:var(--mute);margin:18px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--rule2)}
.crumbs a{color:var(--mute)}
h1,h2,h3{line-height:1.35;color:var(--ink);font-weight:700}
h1{font-size:clamp(1.6rem,1.2rem + 2vw,2.3rem);margin:18px 0 8px}
h2{font-size:clamp(1.3rem,1.1rem + .9vw,1.6rem);margin:2.2em 0 .5em}
h3{font-size:1.1rem;margin:1.6em 0 .35em}
.lead{font-size:1.07rem;color:var(--ink2);max-width:68ch;margin:0 0 18px}

/* tool: drop sheet + settings sheet */
.tool{display:grid;gap:16px;margin:8px 0 10px}
@media (min-width:860px){.tool{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:start}}
.sheet{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r);box-shadow:var(--shadow);padding:18px}
.drop{position:relative;border:2px dashed var(--rule2);border-radius:var(--r);background:var(--sheet);min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:26px 18px;transition:border-color .15s,background-color .15s}
.drop.over{border-color:var(--pen);background:var(--pen-soft)}
.drop .pg{width:58px;height:70px;color:var(--rule2)}
.drop.over .pg{color:var(--pen)}
.drop p{margin:0;color:var(--mute);font-size:.94rem}
.drop .hint{font-size:.86rem}
.fileline{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;margin-top:12px;padding:10px 12px;background:var(--desk);border-radius:8px}
.fileline b{word-break:break-all}
.fileline .meta{color:var(--mute);font-size:.9rem}
.fileline .btn{margin-left:auto}
.pwd form{display:grid;gap:10px;max-width:420px;margin:0 auto}
.pwd input{width:100%}

fieldset{border:0;margin:0;padding:0;min-width:0}
.opts{display:grid;gap:16px}
.opts[disabled]>*:not(legend){opacity:.55}
.opts>legend{float:left;width:100%;font-weight:700;font-size:1.05rem;padding:0;margin:0 0 4px}
.opts>legend+*{clear:both}
.grp{display:grid;gap:6px}
.grp>legend,.lab{font-weight:600;font-size:.95rem;padding:0;margin:0 0 6px;color:var(--ink)}
.help{font-size:.86rem;color:var(--mute);margin:0}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg label{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--rule2);border-radius:8px;background:var(--sheet);cursor:pointer;font-size:.95rem;line-height:1.3}
.seg label small{color:var(--mute);margin-left:6px}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg label:has(input:checked){border-color:var(--ink);background:var(--ink);color:var(--sheet)}
.seg label:has(input:checked) small{color:inherit;opacity:.8}
.seg label:has(input:focus-visible){outline:3px solid var(--pen);outline-offset:2px}
.seg label:has(input:disabled){cursor:not-allowed}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}
input[type=text],input[type=password],select{font:inherit;color:var(--ink);background:var(--sheet);border:1px solid var(--rule2);border-radius:8px;min-height:44px;padding:6px 12px;max-width:100%}
input[type=text]{width:100%}
input[aria-invalid=true]{border-color:var(--bad);box-shadow:0 0 0 1px var(--bad)}
input[type=range]{width:100%;min-height:44px;accent-color:var(--pen)}
output{font-variant-numeric:tabular-nums;font-weight:700}
.est{font-size:.9rem;color:var(--ink2);background:var(--desk);border-radius:8px;padding:8px 12px;margin:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:8px;border:1px solid var(--rule2);
  background:var(--sheet);color:var(--ink);font:600 1rem/1.2 var(--font);text-decoration:none;cursor:pointer;touch-action:manipulation}
.btn:hover{border-color:var(--ink)}
.btn.main{background:var(--pen);border-color:var(--pen);color:var(--pen-ink)}
.btn.main:hover{filter:brightness(.93)}
.btn.big{min-height:52px;padding:0 26px;font-size:1.05rem}
.btn.sm{min-height:44px;padding:0 12px;font-size:.92rem}
.btn.ghost{background:transparent}
.btn:disabled{opacity:.5;cursor:not-allowed}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}

/* status + progress */
.status{min-height:1.7em;margin:10px 0 0;font-size:.95rem;color:var(--ink2)}
.status[data-kind=ok]{color:var(--ok)}
.status[data-kind=bad]{color:var(--bad)}
.prog{display:flex;align-items:center;gap:10px;margin-top:10px}
progress{flex:1;height:10px;appearance:none;-webkit-appearance:none;border:0;border-radius:99px;background:var(--rule);overflow:hidden;accent-color:var(--pen)}
progress::-webkit-progress-bar{background:var(--rule);border-radius:99px}
progress::-webkit-progress-value{background:var(--pen);border-radius:99px}
progress::-moz-progress-bar{background:var(--pen);border-radius:99px}

/* results */
.out{margin-top:16px}
.outhead{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-bottom:12px}
.outhead p{margin:0;font-weight:600}
.thumbs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.thumbs li{background:var(--desk);border:1px solid var(--rule);border-radius:8px;padding:8px;display:grid;gap:8px;align-content:start}
.thumbs figure{margin:0}
.thumbs img{display:block;width:100%;height:auto;background:#fff;border:1px solid var(--rule);border-radius:3px}
.thumbs figcaption{font-size:.82rem;color:var(--mute);margin-top:6px;line-height:1.45}
.thumbs figcaption b{color:var(--ink)}

/* image list (images to PDF) */
.items{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.items li{display:grid;grid-template-columns:auto 56px minmax(0,1fr) auto;align-items:center;gap:10px;background:var(--desk);border:1px solid var(--rule);border-radius:8px;padding:6px 8px;cursor:grab}
.items li.drag{opacity:.45}
.items li.tgt{border-color:var(--pen);box-shadow:inset 0 0 0 1px var(--pen)}
.items .no{font-variant-numeric:tabular-nums;font-weight:700;color:var(--mute);min-width:1.6em;text-align:right}
.items img{width:56px;height:56px;object-fit:cover;border-radius:4px;background:#fff;border:1px solid var(--rule)}
.items .nm{display:grid;min-width:0;line-height:1.4}
.items .nm b{font-weight:600;font-size:.93rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.items .nm small{color:var(--mute);font-size:.8rem}
.ia{display:flex;gap:2px}
.ic{width:44px;height:44px;display:inline-grid;place-items:center;border:0;border-radius:8px;background:transparent;color:var(--ink2);cursor:pointer;padding:0}
.ic svg{width:20px;height:20px;fill:currentColor}
.ic:hover{background:var(--sheet);color:var(--ink)}
.ic[data-act=del]:hover{color:var(--bad)}
.ic:disabled{opacity:.3;cursor:default;background:transparent}
.count{font-size:.9rem;color:var(--mute);margin:10px 0 0}
@media (max-width:420px){.items li{grid-template-columns:44px minmax(0,1fr);}.items .no{display:none}.items img{width:44px;height:44px}.ia{grid-column:1/-1;justify-content:flex-end}}
.dl{display:grid;gap:10px;justify-items:start;padding:14px;background:var(--ok-soft);border-radius:8px}
.dl p{margin:0}

/* results table (compress) */
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0}
.tbl{width:100%;border-collapse:collapse;font-size:.95rem;background:var(--sheet)}
.tbl th,.tbl td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl thead th{font-size:.86rem;color:var(--mute);font-weight:600;border-bottom:2px solid var(--rule2);white-space:nowrap}
.tbl .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl .ok{color:var(--ok);font-weight:700}
.tbl .nm{min-width:150px}
.tbl .nm b{display:block;font-weight:600;word-break:break-all}
.tbl .nm small{display:block;color:var(--mute);font-size:.8rem}
.tbl .nm small.bad{color:var(--bad)}
.tbl .act{text-align:right}
.res td{vertical-align:middle}
@media (max-width:560px){
  .res thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .res,.res tbody,.res tr,.res td{display:block;width:100%}
  .res tr{display:grid;grid-template-columns:repeat(3,auto) 1fr;gap:2px 12px;padding:10px 0;border-bottom:1px solid var(--rule)}
  .res td{border:0;padding:0;text-align:left!important}
  .res td.nm{grid-column:1/-1}
  .res td.num::before{content:attr(data-h);display:block;font-size:.75rem;color:var(--mute);font-weight:400}
  .res td.act{grid-column:4;justify-self:end;align-self:center}
}

/* article */
.doc{max-width:72ch}
.doc p,.doc li{color:var(--ink2)}
.doc strong{color:var(--ink)}
.doc ul,.doc ol{padding-left:1.3em}
.doc li{margin:.3em 0}
.doc .tbl{font-size:.93rem}
.doc .tbl th{color:var(--ink)}
.note{border-left:3px solid var(--pen);background:var(--sheet);padding:10px 14px;border-radius:0 8px 8px 0;margin:1.2em 0;color:var(--ink2)}
.upd{font-size:.88rem;color:var(--mute);margin-top:2.4em}
.tools{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:10px}
@media (min-width:700px){.tools{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}}
.tools a{display:block;height:100%;padding:14px 16px;border:1px solid var(--rule);border-radius:var(--r);background:var(--sheet);text-decoration:none;color:var(--ink)}
.tools a:hover{border-color:var(--ink)}
.tools b{display:block;font-size:1.02rem}
.tools span{display:block;color:var(--mute);font-size:.9rem;margin-top:2px}
.src{font-size:.88rem;color:var(--mute)}
.src ul{padding-left:1.2em}

/* footer */
.foot{margin-top:56px;border-top:1px solid var(--rule);background:var(--sheet);font-size:.92rem;color:var(--mute)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:22px}
.foot nav{display:flex;flex-wrap:wrap;gap:0 4px}
.foot a{display:inline-flex;align-items:center;min-height:44px;padding:0 8px;color:var(--ink2)}
.foot p{margin:0}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
@media print{.top,.foot,.tool{display:none}}