:root {
  --bg: #f4f7f7;
  --card: #ffffff;
  --ink: #14232b;
  --muted: #5b6b73;
  --line: #d9e3e5;
  --brand: #12b8ad;
  --brand-ink: #06433f;
  --danger: #c0392b;
  --warn: #fff4d6;
  --ok: #e3f7ee;
  --err: #fde7e4;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1a1f;
    --card: #17262d;
    --ink: #e8f1f2;
    --muted: #9db0b6;
    --line: #2a3d45;
    --brand: #2fd4c8;
    --brand-ink: #04302c;
    --warn: #3a3217;
    --ok: #12332a;
    --err: #3d1d19;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--brand); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.mono { font-family: ui-monospace, Consolas, monospace; word-break: break-all; }
.pre { white-space: pre-wrap; overflow-wrap: anywhere; }

.top { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.5rem; padding: .75rem 1rem; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 800; letter-spacing: -.02em; color: var(--ink); text-decoration: none; }
.brand span { color: var(--brand); font-weight: 600; }
.top nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-right: auto; }
.top nav a { color: var(--ink); text-decoration: none; padding: .25rem 0; border-bottom: 2px solid transparent; }
.top nav a:hover, .top nav a[aria-current="page"] { border-bottom-color: var(--brand); }
.badge { display: inline-block; min-width: 1.25rem; margin-left: .35rem; padding: 0 .4rem; border-radius: 999px; background: var(--brand); color: #fff; font-size: .75rem; line-height: 1.25rem; text-align: center; }
.logout { display: flex; align-items: center; gap: .75rem; margin: 0; }
.who { color: var(--muted); font-size: .875rem; }

main { max-width: 960px; margin: 0 auto; padding: 1.25rem 1rem 3rem; }
main.wide { max-width: 1280px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem; }
.card.narrow { max-width: 28rem; margin: 2rem auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 1rem; }
.grid .card { margin: 0; }
.row { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: end; }

.banner { padding: .75rem 1rem; border-radius: 8px; margin: 0 0 1rem; }
.banner.warn { background: var(--warn); margin: 0; border-radius: 0; text-align: center; }
.banner.ok { background: var(--ok); }
.banner.err { background: var(--err); }
.ok-card { border-color: var(--brand); }

label.f { display: block; margin-bottom: 1rem; }
label.f > span { display: block; font-weight: 600; margin-bottom: .25rem; }
label.f small { display: block; color: var(--muted); margin-top: .25rem; }
input, select, textarea { width: 100%; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: .6rem .75rem; min-height: 44px; }
input[type="checkbox"] { width: auto; min-height: 0; }
textarea { resize: vertical; }
.filters, form.inline { display: flex; flex-wrap: wrap; gap: .75rem 1rem; align-items: end; margin: 0 0 1rem; }
.filters label, form.inline label { display: block; font-size: .875rem; color: var(--muted); }
.filters select, form.inline select { width: auto; min-width: 11rem; display: block; margin-top: .25rem; }
form.inline { display: inline-flex; margin: 0; }

.btn { display: inline-block; font: inherit; font-weight: 700; background: var(--brand); color: var(--brand-ink); border: 0; border-radius: 8px; padding: .65rem 1.1rem; min-height: 44px; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.05); }
.btn.small { padding: .4rem .8rem; min-height: 36px; font-size: .9rem; }
.btn.danger { background: var(--danger); color: #fff; }
button.link { background: none; border: 0; color: var(--brand); cursor: pointer; font: inherit; padding: .25rem; text-decoration: underline; }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: .6rem .75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tr.is-new td:first-child { box-shadow: inset 3px 0 0 var(--brand); }
.late { color: var(--danger); font-weight: 700; }
.empty { padding: 2rem; text-align: center; }
.pager { display: flex; justify-content: center; gap: 1.5rem; margin-top: 1rem; }

.st { display: inline-block; padding: .1rem .55rem; border-radius: 99px; font-size: .8rem; font-weight: 600; background: var(--line); }
.st-new { background: var(--brand); color: var(--brand-ink); }
.st-enrolled { background: var(--ok); }
.st-rejected, .st-spam, .st-archived { opacity: .7; }

dl.data { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; margin: 0; }
dl.data dt { color: var(--muted); }
dl.data dd { margin: 0; overflow-wrap: anywhere; }
.comments { list-style: none; padding: 0; margin: 0 0 1rem; }
.comments li { padding: .6rem 0; border-bottom: 1px solid var(--line); }
details.danger summary { cursor: pointer; font-weight: 600; color: var(--danger); }

@media (max-width: 640px) {
  .top nav { order: 3; width: 100%; }
  dl.data { grid-template-columns: 1fr; }
  dl.data dt { margin-top: .5rem; }
}
.dup{display:inline-block;margin-left:6px;padding:1px 8px;border-radius:999px;background:var(--warn);font-size:.75rem;font-weight:600;white-space:nowrap}
.dupbox ul{margin:8px 0 0;padding-left:20px}
.banner.err{background:var(--err);padding:12px 14px;border-radius:12px;margin:0 0 12px}
.banner.err p{margin:0 0 8px}