:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel-2: #222c38;
  --border: #2d3a49;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #4f9cf9;
  --accent-2: #2f6fd0;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
  --skip: #8b949e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 28px 22px 64px; }
header h1 { font-size: 22px; margin: 0 0 4px; }
header p { color: var(--muted); margin: 0 0 24px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin-bottom: 20px;
}
.panel h2 { font-size: 15px; margin: 0 0 14px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 11px;
  font-size: 14px;
  font-family: inherit;
}
textarea { resize: vertical; min-height: 64px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.field { margin-bottom: 14px; }
.hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.check { display: flex; align-items: flex-start; gap: 9px; margin: 10px 0; }
.check input { margin-top: 3px; }
.check label { margin: 0; color: var(--text); }
button, .btn {
  background: var(--accent-2);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button:hover { background: var(--accent); }
button.secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
button.secondary:hover { background: var(--border); }
button:disabled { opacity: .5; cursor: not-allowed; }
.drop {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.drop.hover { border-color: var(--accent); background: rgba(79,156,249,.06); }
.filelist { margin-top: 12px; font-size: 13px; color: var(--muted); }

/* Advanced settings disclosure */
details.advanced { padding: 0; overflow: hidden; }
details.advanced > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: baseline; gap: 12px; padding: 18px 22px;
}
details.advanced > summary::-webkit-details-marker { display: none; }
details.advanced > summary::before { content: "\25B8"; color: var(--muted); }
details.advanced[open] > summary::before { content: "\25BE"; }
details.advanced > summary:hover { background: var(--panel-2); }
.advanced-title { font-weight: 600; font-size: 15px; color: var(--text); }
.advanced-body { padding: 4px 22px 20px; border-top: 1px solid var(--border); }
.advanced-body h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); margin: 20px 0 12px; }
.advanced-body h3:first-child { margin-top: 14px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.right { margin-left: auto; }
.muted { color: var(--muted); }
.pill {
  display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px;
  border-radius: 999px; text-transform: uppercase; letter-spacing: .03em;
}
.pill.figure { background: rgba(79,156,249,.18); color: var(--accent); }
.pill.formula { background: rgba(210,153,34,.18); color: var(--warn); }
.pill.table { background: rgba(63,185,80,.18); color: var(--ok); }
.status-ok { color: var(--ok); }
.status-warn { color: var(--warn); }
.status-err { color: var(--err); }
.status-skip { color: var(--skip); }

/* progress */
.bar { height: 10px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.bar > div { height: 100%; background: var(--accent); width: 0; transition: width .3s; }

/* review cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.filegroup { margin-bottom: 28px; }
.filehead {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  padding: 10px 14px; margin-bottom: 14px;
  background: var(--panel); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: 10px;
}
.filehead .filename { font-weight: 600; font-size: 15px; word-break: break-all; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; display: flex; flex-direction: column;
}
.card .imgwrap {
  background: #fff; display: flex; align-items: center; justify-content: center;
  min-height: 150px; max-height: 280px; overflow: hidden;
}
.card .imgwrap img { max-width: 100%; max-height: 280px; display: block; }
.card .noimg { color: var(--muted); padding: 40px; font-size: 13px; }
.card .body { padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; }
.card .meta { font-size: 12px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.card textarea { min-height: 70px; }
.card .foot { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.controls { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.ctl { display: flex; align-items: center; gap: 6px; margin: 0; font-size: 12px; color: var(--muted); }
.ctl select, .ctl input { width: auto; padding: 5px 8px; font-size: 13px; }
.rawbox summary { cursor: pointer; font-size: 12px; }
.rawbox pre { white-space: pre-wrap; word-break: break-word; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; font-size: 12px; max-height: 220px; overflow: auto; margin: 6px 0 0; }
.toolbar { position: sticky; top: 0; z-index: 5; background: var(--bg); padding: 12px 0; }
.summary-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.summary-table td, .summary-table th { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); }
.badge-src { font-size: 11px; padding: 1px 6px; border-radius: 5px; background: var(--panel-2); border: 1px solid var(--border); }
.spinner {
  width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; display: inline-block; animation: spin .8s linear infinite; vertical-align: -3px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.notice { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-top: 10px; }
.notice.ok { background: rgba(63,185,80,.12); color: var(--ok); }
.notice.err { background: rgba(248,81,73,.12); color: var(--err); }

/* nav + auth + user management */
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 0 16px; border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.nav .brand { font-weight: 700; color: var(--text); text-decoration: none; }
.nav-right { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.nav-right a { text-decoration: none; }
.inline { display: inline; margin: 0; }
.linkbtn { background: none; border: none; color: var(--accent); padding: 0; font: inherit; cursor: pointer; }
.linkbtn:hover { background: none; text-decoration: underline; }
.wrap.narrow { max-width: 460px; }
.flashes { margin-bottom: 18px; display: flex; flex-direction: column; gap: 8px; }
.role-admin { color: var(--accent); font-weight: 600; }
.role-user { color: var(--muted); }
.users-table td { vertical-align: middle; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.btn-sm { padding: 5px 10px; font-size: 12px; font-weight: 600; }
.danger { background: var(--err); }
.danger:hover { background: #ff6b63; }
.pw-inline { width: 132px; padding: 5px 8px; font-size: 12px; }
.apikey { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 10px; margin: 8px 0 0; user-select: all; word-break: break-all; white-space: pre-wrap; }