:root{
  --ink:#20304c;        /* น้ำเงินหมึก */
  --ink-soft:#5a6a8a;
  --paper:#f7f6f2;      /* ขาวกระดาษ */
  --card:#ffffff;
  --line:#dcdad2;
  --stamp:#b3442e;      /* แดงตราประทับ */
  --ok:#2e7d4f;
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'IBM Plex Sans Thai','Noto Sans Thai',sans-serif;
  background:var(--paper); color:var(--ink);
  min-height:100vh; padding:28px 20px 60px;
}
.wrap{max-width:1060px;margin:0 auto}
header{display:flex;align-items:baseline;gap:14px;margin-bottom:6px;flex-wrap:wrap}
h1{font-size:26px;font-weight:700;letter-spacing:-.3px}
h1 .mark{color:var(--stamp)}
.sub{color:var(--ink-soft);font-size:14px}
.privacy{font-size:12.5px;color:var(--ink-soft);margin-bottom:22px;border-left:3px solid var(--stamp);padding-left:10px}

.grid{display:grid;grid-template-columns:1fr 340px;gap:20px}
@media(max-width:860px){.grid{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card h2{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h2 .no{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--stamp);border:1px solid var(--stamp);border-radius:4px;padding:1px 6px}

/* dropzone */
#drop{
  border:2px dashed var(--line); border-radius:var(--radius);
  padding:34px 16px; text-align:center; cursor:pointer;
  transition:border-color .15s, background .15s; color:var(--ink-soft);
}
#drop.over{border-color:var(--stamp);background:#fdf5f3}
#drop:focus-visible{outline:2px solid var(--stamp);outline-offset:2px}
#drop strong{color:var(--ink)}
#drop small{display:block;margin-top:6px;font-size:12px}

/* file list */
#fileList{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.fileRow{
  display:flex;align-items:center;gap:10px;
  border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:13.5px;
  background:#fcfbf9;
}
.fileRow .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fileRow .size{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--ink-soft)}
.fileRow .status{font-size:12px;min-width:70px;text-align:right}
.status.wait{color:var(--ink-soft)}
.status.busy{color:var(--stamp)}
.status.done{color:var(--ok);font-weight:600}
.status.err{color:#c0392b}
.fileRow a.dl{color:var(--ok);font-weight:600;text-decoration:none;font-size:12.5px;border:1px solid var(--ok);border-radius:6px;padding:3px 9px}
.fileRow button.rm{background:none;border:none;color:var(--ink-soft);cursor:pointer;font-size:15px;line-height:1}
.fileRow button.rm:hover{color:var(--stamp)}

/* controls */
label{display:block;font-size:12.5px;font-weight:600;margin:13px 0 5px;color:var(--ink)}
label:first-of-type{margin-top:0}
input[type=text], textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;
  font-family:inherit;font-size:14px;color:var(--ink);background:#fff;
  resize:vertical;line-height:1.5;
}
input[type=text]:focus, textarea:focus{outline:2px solid var(--stamp);outline-offset:1px;border-color:transparent}
.row2{display:flex;gap:12px}
.row2>div{flex:1}
input[type=range]{width:100%;accent-color:var(--stamp)}
.rangeVal{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--ink-soft);float:right;font-weight:400}
input[type=color]{width:100%;height:36px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;padding:3px}
select{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;
  font-family:inherit;font-size:13.5px;color:var(--ink);background:#fff;cursor:pointer;
}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{
  flex:1;padding:8px 0;background:#fff;border:none;font-family:inherit;font-size:13px;
  cursor:pointer;color:var(--ink-soft);
}
.seg button.on{background:var(--ink);color:#fff;font-weight:600}

#imgPick{font-size:12.5px}
.hint{font-size:11.5px;color:var(--ink-soft);margin-top:4px;font-weight:400}

/* preview */
.previewBox{
  margin-top:16px;background:#eceae4;border:1px solid var(--line);border-radius:8px;
  padding:14px;display:flex;justify-content:center;
}
#previewCanvas{
  background:#fff; box-shadow:0 2px 10px rgba(32,48,76,.15);
  width:100%; max-width:240px; aspect-ratio:210/297;
}

/* actions */
.actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
.btn{
  padding:11px 20px;border-radius:8px;font-family:inherit;font-size:14.5px;font-weight:600;
  cursor:pointer;border:1px solid transparent;
}
.btn.primary{background:var(--stamp);color:#fff}
.btn.primary:hover{background:#9c3a27}
.btn.primary:disabled{background:#d9b0a6;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink)}
.btn.ghost:disabled{color:#b8b5ac;cursor:not-allowed}

#progressWrap{margin-top:12px;display:none}
#progressBar{height:6px;background:var(--line);border-radius:3px;overflow:hidden}
#progressFill{height:100%;width:0%;background:var(--stamp);transition:width .2s}
#progressText{font-size:12px;color:var(--ink-soft);margin-top:5px;font-family:'IBM Plex Mono',monospace}