:root {
  --bg: #f4f5fb; --card: #fff; --ink: #1d2033; --muted: #6b6f86; --line: #e3e5ef;
  --brand: #4f46e5; --brand-ink: #fff; --brand-soft: #eef0ff;
  --ok: #15803d; --ok-soft: #dcfce7; --warn: #b45309; --warn-soft: #fef3c7; --bad: #b91c1c; --bad-soft: #fee2e2;
  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12131a; --card: #1c1e29; --ink: #e8e9f2; --muted: #9a9db3; --line: #2d3040;
    --brand: #818cf8; --brand-ink: #10112a; --brand-soft: #262a4a;
    --ok: #4ade80; --ok-soft: #14301f; --warn: #fbbf24; --warn-soft: #3a2d0e; --bad: #f87171; --bad-soft: #3b1717;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.4; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--brand); }
h1, h2, h3 { margin: 0 0 12px; line-height: 1.2; }
h2 { font-size: 20px; } h3 { font-size: 16px; }

header.top { position: sticky; top: 0; z-index: 5; background: var(--card); border-bottom: 1px solid var(--line); }
.topbar { display: flex; align-items: center; gap: 10px; padding: 8px 16px; max-width: 1200px; margin: auto; }
.topbar .logo { width: 34px; height: 34px; border-radius: 8px; object-fit: cover; background: var(--brand-soft); display: grid; place-items: center; font-weight: 700; color: var(--brand); }
.topbar .title { font-weight: 700; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar .who { color: var(--muted); font-size: 13px; text-align: right; }
nav.tabs { display: flex; gap: 4px; overflow-x: auto; padding: 0 12px; max-width: 1200px; margin: auto; scrollbar-width: none; }
nav.tabs a { padding: 10px 12px; text-decoration: none; color: var(--muted); border-bottom: 3px solid transparent; white-space: nowrap; font-weight: 600; }
nav.tabs a.on { color: var(--brand); border-color: var(--brand); }
main { max-width: 1200px; margin: auto; padding: 16px; }
.banner { padding: 10px 16px; text-align: center; font-weight: 600; }
.banner.warn { background: var(--warn-soft); color: var(--warn); }
.banner.bad { background: var(--bad-soft); color: var(--bad); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1 1 160px; }
.row > .fit { flex: 0 0 auto; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
label { display: block; font-size: 13px; color: var(--muted); font-weight: 600; }
label > input, label > select, label > textarea { margin-top: 4px; }
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); min-height: 42px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
input[type=checkbox] { width: auto; min-height: 0; }
.check { display: flex; gap: 8px; align-items: center; color: var(--ink); font-weight: 500; font-size: 15px; padding: 6px 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); cursor: pointer; font-weight: 600; min-height: 42px; text-decoration: none; color: var(--ink); }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn.danger { color: var(--bad); }
.btn.small { padding: 6px 10px; min-height: 32px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }
.btns { display: flex; gap: 8px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--brand-soft); }
.tablewrap { overflow-x: auto; }
tfoot td { font-weight: 700; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; font-weight: 700; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.mute { background: var(--line); color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.stat { font-size: 26px; font-weight: 800; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stats .card { margin: 0; }

/* scan */
.scanwrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 800px) { .scanwrap { grid-template-columns: 1fr; } }
#reader { width: 100%; border-radius: var(--radius); overflow: hidden; background: #000; min-height: 60px; }
#reader video { width: 100% !important; }
.result { border-radius: var(--radius); padding: 20px; text-align: center; border: 2px solid var(--line); min-height: 180px; display: grid; place-content: center; }
.result.ok { background: var(--ok-soft); border-color: var(--ok); }
.result.warn { background: var(--warn-soft); border-color: var(--warn); }
.result.bad { background: var(--bad-soft); border-color: var(--bad); }
.result .name { font-size: 28px; font-weight: 800; }
.result .big { font-size: 20px; font-weight: 700; margin-top: 6px; }

/* dialog */
dialog { border: 0; border-radius: 16px; padding: 0; width: min(640px, calc(100vw - 24px)); max-height: calc(100vh - 32px); background: var(--card); color: var(--ink); }
dialog::backdrop { background: rgba(10, 12, 30, .5); }
dialog .dhead { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--card); z-index: 1; }
dialog .dbody { padding: 16px; }
dialog .dfoot { padding: 12px 16px; border-top: 1px solid var(--line); display: flex; gap: 8px; justify-content: flex-end; position: sticky; bottom: 0; background: var(--card); }
.x { background: none; border: 0; font-size: 22px; cursor: pointer; color: var(--muted); }

#toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 100; display: grid; gap: 8px; }
#toast div { background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; box-shadow: 0 4px 16px rgba(0,0,0,.2); }
#toast div.err { background: var(--bad); color: #fff; }

.login { max-width: 400px; margin: 8vh auto; padding: 16px; }
.login .brand { text-align: center; margin-bottom: 20px; }
.login .brand .mark { width: 56px; height: 56px; border-radius: 14px; background: var(--brand); color: var(--brand-ink); display: inline-grid; place-items: center; font-size: 26px; font-weight: 800; }
.months { display: flex; flex-wrap: wrap; gap: 6px; }
.months label { display: flex; gap: 6px; align-items: center; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; color: var(--ink); font-weight: 500; cursor: pointer; }
.months label.unpaid { border-color: var(--bad); }
.months label.paid { opacity: .5; }
.list-search { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.list-search > * { flex: 1 1 160px; }
.empty { padding: 30px; text-align: center; color: var(--muted); }
.hide { display: none !important; }

@media print {
  header.top, nav, .noprint, .btn, #toast, .banner { display: none !important; }
  body { background: #fff; color: #000; }
  .card { border: 0; padding: 0; }
  main { padding: 0; }
}