:root {
  --bg: #f4f6f9; --card: #ffffff; --ink: #1b2430; --muted: #66707d; --line: #e0e5eb;
  --brand: #0f4c81; --brand-ink: #ffffff; --ok: #1f8a4c; --warn: #b7791f; --bad: #c53030;
  --ok-bg: #e6f4ec; --warn-bg: #fdf3dc; --bad-bg: #fbe9e9; --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171d; --card: #1b222b; --ink: #e8edf2; --muted: #9aa5b1; --line: #2c3541;
    --brand: #4a90d9; --brand-ink: #0b1118; --ok: #4cc17f; --warn: #e3b04b; --bad: #f08080;
    --ok-bg: #16301f; --warn-bg: #352a12; --bad-bg: #3a1c1c;
  }
}
* { 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, sans-serif; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: 0 0 .75rem; }
h2 { font-size: 1.1rem; margin: 0 0 .6rem; }
h3 { font-size: 1rem; margin: 0 0 .5rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 16px; }

/* Barra superior */
.top { background: var(--brand); color: var(--brand-ink); position: sticky; top: 0; z-index: 5; }
.top-in { max-width: 1100px; margin: 0 auto; padding: 8px 16px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--brand-ink); white-space: nowrap; }
.nav { display: flex; gap: 4px; overflow-x: auto; flex: 1; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--brand-ink); padding: 6px 12px; border-radius: 8px; opacity: .85; white-space: nowrap; }
.nav a:hover { opacity: 1; text-decoration: none; background: rgba(255,255,255,.14); }
.nav a.on { opacity: 1; background: rgba(255,255,255,.22); font-weight: 600; }
.user { display: flex; align-items: center; gap: 10px; font-size: .9rem; }
.user a { color: var(--brand-ink); }
.user form { margin: 0; }
button.link { background: none; border: 0; color: var(--brand-ink); text-decoration: underline; cursor: pointer; font: inherit; padding: 0; }
@media (max-width: 640px) { .user a { display: none; } .top-in { gap: 8px; } }

/* Tarjetas y filas */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.card.narrow { max-width: 520px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grow { flex: 1 1 200px; min-width: 0; }
.item { padding: 8px 0; border-top: 1px solid var(--line); }
.item:first-of-type { border-top: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .grid2 { grid-template-columns: 1fr; gap: 0; } }

/* Formularios */
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: 12px; }
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); font: inherit; margin-top: 4px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: transparent; }
input[type=checkbox] { width: auto; margin: 0 8px 0 0; }
label.check { color: var(--ink); display: flex; align-items: center; }
.row input, .row select { margin-top: 0; width: auto; }
.row input.grow { width: auto; }
.fgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 16px; align-items: end; }
.filters { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr auto auto; gap: 10px; align-items: center; }
.filters input, .filters select { margin-top: 0; }
@media (max-width: 900px) { .filters { grid-template-columns: 1fr 1fr; } .filters input[type=search] { grid-column: 1 / -1; } }

/* Botones */
.btn { display: inline-block; padding: 9px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); font: inherit; font-weight: 500; cursor: pointer; text-align: center; text-decoration: none; min-height: 42px; }
.btn:hover { text-decoration: none; filter: brightness(.97); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.block { display: block; width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* Avisos */
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; border: 1px solid transparent; }
.f-ok { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }
.f-error { background: var(--bad-bg); color: var(--bad); border-color: var(--bad); }

/* Tablas (se convierten en tarjetas en pantallas pequeñas) */
.tablewrap { overflow-x: auto; }
.t { width: 100%; border-collapse: collapse; }
.t th { text-align: left; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 8px 10px; border-bottom: 2px solid var(--line); }
.t td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.t tr:last-child td { border-bottom: 0; }
@media (max-width: 700px) {
  .t thead { display: none; }
  .t, .t tbody, .t tr, .t td { display: block; width: 100%; }
  .t tr { border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; margin-bottom: 10px; }
  .t td { border: 0; padding: 3px 0; display: flex; gap: 10px; justify-content: space-between; text-align: right; }
  .t td::before { content: attr(data-label); color: var(--muted); font-size: .8rem; text-align: left; flex: 0 0 38%; }
}
.pager { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 14px; }

/* Insignias y códigos */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; background: var(--line); color: var(--ink); }
.b-bueno { background: var(--ok-bg); color: var(--ok); }
.b-regular { background: var(--warn-bg); color: var(--warn); }
.b-malo { background: var(--bad-bg); color: var(--bad); }
.b-baja { background: var(--line); color: var(--muted); }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 700; background: var(--bg); border: 1px solid var(--line); padding: 2px 8px; border-radius: 6px; }
.dl { display: grid; grid-template-columns: 150px 1fr; gap: 6px 12px; margin: 0 0 14px; }
.dl dt { color: var(--muted); }
.dl dd { margin: 0; }
@media (max-width: 520px) { .dl { grid-template-columns: 1fr; gap: 0; } .dl dd { margin-bottom: 8px; } }

/* Resumen */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; }
.stat .n { font-size: 1.9rem; font-weight: 700; line-height: 1.1; }
.stat .l { color: var(--muted); font-size: .85rem; }
.stat.ok .n { color: var(--ok); } .stat.warn .n { color: var(--warn); } .stat.bad .n { color: var(--bad); }
.bar { display: grid; grid-template-columns: minmax(90px, 1.2fr) 2fr 36px; gap: 8px; align-items: center; margin: 6px 0; font-size: .9rem; }
.bl { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bt { background: var(--line); border-radius: 999px; height: 10px; overflow: hidden; }
.bt i { display: block; height: 100%; background: var(--brand); border-radius: 999px; }
.bn { text-align: right; font-weight: 600; }

/* Pestañas */
.tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.tabs a { padding: 8px 16px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
.tabs a.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }

/* Escáner */
.reader { width: 100%; max-width: 520px; margin: 0 auto 12px; border-radius: var(--radius); overflow: hidden; background: #000; min-height: 220px; }
.quick { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 4px; }
.feed { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; max-height: 280px; overflow-y: auto; }
.feed-item { padding: 8px 12px; border-radius: 8px; font-size: .95rem; border-left: 4px solid var(--line); background: var(--bg); }
.f-ok.feed-item { border-color: var(--ok); background: var(--ok-bg); }
.f-warn { border-color: var(--warn); background: var(--warn-bg); }
.f-bad.feed-item { border-color: var(--bad); background: var(--bad-bg); }
.f-dup { opacity: .7; }

/* Login */
.login { min-height: 80vh; display: grid; place-items: center; }
.login .card { width: 100%; max-width: 380px; }
.uform { padding: 12px 0; border-top: 1px solid var(--line); }
.uform:first-of-type { border-top: 0; }
details summary { cursor: pointer; margin-bottom: 6px; }