:root {
  --azul: #12306b;
  --azul-claro: #1f4a9c;
  --gris: #eef1f6;
  --borde: #d7dde8;
  --texto: #1b2330;
  --suave: #5b6b82;
  --ok: #0f7b46;
  --warn: #a86a00;
  --danger: #b3261e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 14px;
  color: var(--texto);
  background: #f6f8fb;
}

a { color: var(--azul-claro); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- estructura ---------- */
.topbar {
  background: var(--azul);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  height: 52px;
}
.topbar .brand { font-weight: 700; letter-spacing: .3px; }
.topbar .brand small { font-weight: 400; opacity: .75; margin-left: 8px; font-size: 12px; }
.topbar nav { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.topbar nav a, .topbar nav button { color: #dfe7f7; background: none; border: 0; cursor: pointer; font-size: 13px; }
.topbar nav a:hover { color: #fff; }

.shell { display: flex; min-height: calc(100vh - 52px); }

.sidebar {
  width: 210px;
  background: #fff;
  border-right: 1px solid var(--borde);
  padding: 14px 0;
  flex-shrink: 0;
}
.sidebar .grupo { padding: 10px 18px 4px; font-size: 11px; text-transform: uppercase; color: var(--suave); letter-spacing: .5px; }
.sidebar a {
  display: block;
  padding: 9px 18px;
  color: var(--texto);
  font-size: 13.5px;
  border-left: 3px solid transparent;
}
.sidebar a:hover { background: var(--gris); text-decoration: none; }
.sidebar a.activo { border-left-color: var(--azul); background: #eef3fc; font-weight: 600; }

.content { flex: 1; padding: 22px 26px 40px; min-width: 0; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 22px 0 10px; }
.sub { color: var(--suave); margin: 0 0 18px; font-size: 13px; }

/* ---------- tarjetas y tablas ---------- */
.card {
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 18px;
}
.card h2 { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--borde); vertical-align: middle; }
th { background: #f2f5fa; font-size: 12px; text-transform: uppercase; letter-spacing: .3px; color: var(--suave); }
tbody tr:hover { background: #fafbfe; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.acciones { white-space: nowrap; }

.vacio { padding: 30px; text-align: center; color: var(--suave); }

/* ---------- formularios ---------- */
.grid { display: grid; gap: 14px; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } }

label { display: block; font-size: 12px; font-weight: 600; color: var(--suave); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .3px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--borde);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
  color: var(--texto);
}
input:focus, select:focus, textarea:focus { outline: 2px solid #c9d8f2; border-color: var(--azul-claro); }
input.is-invalid, select.is-invalid, textarea.is-invalid { border-color: var(--danger); background: #fff8f8; }
.field-error { color: var(--danger); font-size: 12px; margin-top: 4px; }
.help { color: var(--suave); font-size: 12px; margin-top: 4px; }

.botones { display: flex; gap: 10px; align-items: center; margin-top: 18px; }

.btn {
  display: inline-block;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  background: var(--azul);
  color: #fff;
}
.btn:hover { background: var(--azul-claro); text-decoration: none; color: #fff; }
.btn.sec { background: #fff; color: var(--azul); border-color: var(--borde); }
.btn.sec:hover { background: var(--gris); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #8f1d17; }
.btn.sm { padding: 5px 10px; font-size: 12.5px; }

/* ---------- avisos ---------- */
.alert { padding: 11px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 13.5px; border: 1px solid; }
.alert.ok { background: #eaf7f0; border-color: #bfe3d0; color: #0f5c37; }
.alert.error { background: #fdeeed; border-color: #f3c6c2; color: #8f1d17; }
.alert.warn { background: #fdf6e6; border-color: #eed9a8; color: #7a4f00; }
.alert.info { background: #eef3fc; border-color: #cadcf7; color: #1b3f7d; }

/* ---------- etiquetas ---------- */
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 700; letter-spacing: .3px; }
.badge.ok { background: #e3f5ec; color: var(--ok); }
.badge.no { background: #fdeceb; color: var(--danger); }
.badge.neutral { background: var(--gris); color: var(--suave); }

/* ---------- resumen ---------- */
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpi { background: #fff; border: 1px solid var(--borde); border-radius: 8px; padding: 14px 16px; }
.kpi .valor { font-size: 24px; font-weight: 700; margin-top: 4px; }
.kpi .etiqueta { font-size: 12px; color: var(--suave); text-transform: uppercase; letter-spacing: .4px; }
@media (max-width: 900px) { .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.filtros { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 14px; }
.filtros .campo { min-width: 150px; }

.paginacion { display: flex; gap: 6px; margin-top: 14px; flex-wrap: wrap; }
.paginacion a, .paginacion span {
  padding: 6px 11px; border: 1px solid var(--borde); border-radius: 6px; background: #fff; font-size: 13px;
}
.paginacion span.actual { background: var(--azul); color: #fff; border-color: var(--azul); }

/* ---------- constancia (vista) ---------- */
.doc-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 12px 0 4px; }
.doc-meta div span { display: block; font-size: 11.5px; color: var(--suave); text-transform: uppercase; }
.doc-meta div strong { font-size: 15px; }

/* ---------- login ---------- */
.auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #12306b, #1f4a9c 60%, #2c6bd1);
  padding: 20px;
}
.auth .caja { background: #fff; border-radius: 10px; padding: 30px 32px; width: 100%; max-width: 380px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.auth h1 { font-size: 20px; margin-bottom: 4px; }
.auth .sub { margin-bottom: 20px; }
.auth .btn { width: 100%; margin-top: 8px; text-align: center; }

@media print {
  .topbar, .sidebar, .no-print { display: none !important; }
  .content { padding: 0; }
  body { background: #fff; }
}

/* ================= móvil (celular) ================= */
@media (max-width: 820px) {
  html, body { max-width: 100%; overflow-x: hidden; }
  body { font-size: 15px; }

  .topbar { padding: 0 12px; height: auto; min-height: 52px; flex-wrap: wrap; gap: 6px; }
  .topbar .brand { font-size: 13.5px; }
  .topbar .brand small { display: none; }

  .shell { flex-direction: column; }
  .sidebar {
    width: 100%; display: flex; overflow-x: auto; padding: 4px 6px;
    border-right: 0; border-bottom: 1px solid var(--borde);
    -webkit-overflow-scrolling: touch;
  }
  .sidebar .grupo { display: none; }
  .sidebar a {
    white-space: nowrap; border-left: 0; border-bottom: 3px solid transparent;
    padding: 10px 12px; font-size: 13.5px;
  }
  .sidebar a.activo { border-left: 0; border-bottom-color: var(--azul); background: transparent; }

  .content { padding: 14px 12px 90px; }
  h1 { font-size: 19px; }
  .card { padding: 14px; border-radius: 10px; }

  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; gap: 12px; }

  .card table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .card table thead, .card table tbody { display: table; width: 100%; }
  .filtros { gap: 8px; }
  .filtros .campo { min-width: 100%; }

  input[type=text], input[type=email], input[type=password], input[type=number],
  input[type=date], select, textarea { font-size: 16px; padding: 11px 12px; }
  label { font-size: 11.5px; }
  .btn { padding: 12px 18px; font-size: 15px; }
  .btn.sm { padding: 8px 12px; font-size: 13px; }

  .botones.sticky {
    position: sticky; bottom: 0; background: #fff; padding: 10px 0 12px;
    border-top: 1px solid var(--borde); margin-top: 16px;
  }
  .botones.sticky .btn { flex: 1; text-align: center; }

  /* login */
  .auth { padding: 12px; }
  .auth .caja { width: 100%; max-width: 100%; margin: 0; padding: 20px 16px; }
  .auth h1 { font-size: 18px; }
  .auth .sub { font-size: 13px; line-height: 1.35; }
}