:root{
  --paper:#E9ECF1;
  --surface:#FFFFFF;
  --surface-sunk:#F3F5F8;
  --ink:#1B2430;
  --ink-soft:#5A6675;
  --ink-faint:#8B95A3;
  --rule:#C9D0DA;
  --rule-soft:#DEE3EA;
  --held-ink:#7A5610;
  --held-bg:#F7E8C4;
  --held-edge:#E0C883;
  --live-ink:#12604A;
  --live-bg:#C9E6D9;
  --live-edge:#8FC7B1;
  --uploading-ink:#2947D6;
  --uploading-bg:#E4E9FB;
  --uploading-edge:#A8B6F0;
  --danger:#A32B21;
  --focus:#2947D6;
  --shadow:0 1px 0 rgba(27,36,48,.06), 0 8px 24px -16px rgba(27,36,48,.5);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#141A22;
    --surface:#1C242E;
    --surface-sunk:#171E27;
    --ink:#E6EAF0;
    --ink-soft:#A3AEBC;
    --ink-faint:#6E7A89;
    --rule:#33404F;
    --rule-soft:#28323E;
    --held-ink:#EFCF86;
    --held-bg:#3A2F14;
    --held-edge:#6A5622;
    --live-ink:#8FDCBE;
    --live-bg:#12352A;
    --live-edge:#2C6350;
    --uploading-ink:#7E97FF;
    --uploading-bg:#1A2448;
    --uploading-edge:#3A4A8A;
    --danger:#E98A80;
    --focus:#7E97FF;
    --shadow:0 1px 0 rgba(0,0,0,.3), 0 10px 30px -18px rgba(0,0,0,.9);
  }
}
:root[data-theme="dark"]{
  --paper:#141A22;
  --surface:#1C242E;
  --surface-sunk:#171E27;
  --ink:#E6EAF0;
  --ink-soft:#A3AEBC;
  --ink-faint:#6E7A89;
  --rule:#33404F;
  --rule-soft:#28323E;
  --held-ink:#EFCF86;
  --held-bg:#3A2F14;
  --held-edge:#6A5622;
  --live-ink:#8FDCBE;
  --live-bg:#12352A;
  --live-edge:#2C6350;
  --uploading-ink:#7E97FF;
  --uploading-bg:#1A2448;
  --uploading-edge:#3A4A8A;
  --danger:#E98A80;
  --focus:#7E97FF;
  --shadow:0 1px 0 rgba(0,0,0,.3), 0 10px 30px -18px rgba(0,0,0,.9);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:Archivo,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:2px}

.wrap{max-width:860px;margin:0 auto;padding:28px 20px 72px}

/* ---------- gate ---------- */
.gate{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
}
.gate-card{
  width:100%;max-width:400px;
}
.mark{
  display:flex;align-items:baseline;gap:9px;margin-bottom:26px;
}
.mark-name{font-size:21px;font-weight:700;letter-spacing:-.02em}
.mark-sub{font-size:13px;color:var(--ink-faint)}
.gate-card label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:7px}
input[type=password],input[type=text]{
  width:100%;padding:11px 12px;background:var(--surface-sunk);
  border:1px solid var(--rule);color:var(--ink);
  font:500 15px/1.3 "IBM Plex Mono",ui-monospace,monospace;
  letter-spacing:.02em;
}
input::placeholder{color:var(--ink-faint);letter-spacing:0}
.btn{
  background:var(--ink);color:var(--surface);border:1px solid var(--ink);
  padding:10px 18px;font-weight:600;font-size:14px;
}
.btn:hover{opacity:.88}
.btn-wide{width:100%;margin-top:14px;padding:12px}
.btn-quiet{
  background:transparent;color:var(--ink-soft);border:1px solid var(--rule);
  padding:7px 13px;font-size:13px;font-weight:500;
}
.btn-quiet:hover{color:var(--ink);border-color:var(--ink-soft)}
.btn-quiet[disabled]{opacity:.4;cursor:not-allowed}
.btn-quiet[disabled]:hover{color:var(--ink-soft);border-color:var(--rule)}
.err{
  margin-top:13px;font-size:13px;color:var(--danger);
  min-height:19px;
}
.demo-note{
  margin-top:24px;padding-top:18px;border-top:1px solid var(--rule-soft);
  font-size:13px;color:var(--ink-faint);line-height:1.65;
}
.demo-note code{
  font-family:"IBM Plex Mono",monospace;font-size:12.5px;
  color:var(--ink-soft);
}

/* ---------- app shell ---------- */
.hidden{display:none !important}
header.bar{
  display:flex;align-items:center;justify-content:flex-end;gap:16px;
  flex-wrap:wrap;
  padding-bottom:16px;border-bottom:2px solid var(--ink);margin-bottom:26px;
}
.bar-right{display:flex;align-items:center;gap:10px}
.role-chip{
  font:500 12px/1 "IBM Plex Mono",monospace;
  padding:6px 9px;border:1px solid var(--rule);color:var(--ink-soft);
  background:var(--surface-sunk);
}

/* ---------- dropzone ---------- */
.drop{
  border:2px dashed var(--rule);background:var(--surface-sunk);
  padding:34px 24px;text-align:center;margin-bottom:30px;
  transition:background .12s,border-color .12s;
}
.drop.over{border-color:var(--focus);background:var(--surface);border-style:solid}
.drop h2{margin:0 0 6px;font-size:16px;font-weight:600;letter-spacing:-.01em}
.drop p{margin:0 0 16px;font-size:13.5px;color:var(--ink-soft);max-width:44ch;margin-inline:auto}

/* ---------- manifest ---------- */
.sec-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  flex-wrap:wrap;margin-bottom:12px;
}
.sec-head h2{margin:0;font-size:16px;font-weight:600;letter-spacing:-.01em}
.bulk{display:flex;gap:8px}
.manifest{
  background:var(--surface);border:1px solid var(--rule);
}
.row{
  display:grid;
  grid-template-columns:auto 1fr auto auto auto;
  align-items:center;gap:14px;
  padding:12px 16px;border-bottom:1px solid var(--rule-soft);
}
.row:last-child{border-bottom:0}
.row.is-held .fname{color:var(--ink-soft)}
input[type=checkbox]{
  width:16px;height:16px;accent-color:var(--focus);cursor:pointer;margin:0;
}
.fname{font-weight:500;word-break:break-word;min-width:0}
button.fname{font:inherit;color:inherit;background:none;border:0;padding:0;text-align:left}
.fname.is-openable{cursor:pointer;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--rule)}
.fname.is-openable:hover{text-decoration-color:currentColor}
.fsize{
  font:400 12.5px/1 "IBM Plex Mono",monospace;
  color:var(--ink-faint);white-space:nowrap;
}
.state{
  font:500 11.5px/1 "IBM Plex Mono",monospace;
  padding:5px 8px;border:1px solid;white-space:nowrap;
}
.state.held{color:var(--held-ink);background:var(--held-bg);border-color:var(--held-edge)}
.state.live{color:var(--live-ink);background:var(--live-bg);border-color:var(--live-edge)}
.state.uploading{color:var(--uploading-ink);background:var(--uploading-bg);border-color:var(--uploading-edge)}
.state.failed{color:var(--danger);background:transparent;border-color:var(--danger)}
.row-act{display:flex;gap:6px}
.linkbtn{
  background:none;border:0;padding:4px 2px;font-size:13px;font-weight:500;
  color:var(--ink-soft);text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:var(--rule);
}
.linkbtn:hover{color:var(--ink);text-decoration-color:currentColor}
.linkbtn.warn:hover{color:var(--danger)}
.empty{padding:30px 20px;text-align:center;color:var(--ink-faint);font-size:14px}
.count{font:400 12.5px/1 "IBM Plex Mono",monospace;color:var(--ink-faint)}

/* trainee download row */
.row.dl{grid-template-columns:1fr auto auto}

.footnote{
  margin-top:30px;padding-top:16px;border-top:1px solid var(--rule-soft);
  font-size:12.5px;color:var(--ink-faint);line-height:1.6;max-width:70ch;
}

@media (max-width:620px){
  .row{grid-template-columns:auto 1fr auto;row-gap:8px}
  .fsize{grid-column:2;justify-self:start}
  .state{grid-column:2}
  .row-act{grid-column:3;grid-row:1/3;align-self:start}
  .row.dl{grid-template-columns:1fr auto}
  .row.dl .fsize{grid-column:1}
  .row.dl .row-act{grid-column:2;grid-row:1}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}