:root {
  --azul: #1f3b57;
  --azul-claro: #2d5a85;
  --acento: #0f9d76;
  --fondo: #f4f6f8;
  --borde: #dde3ea;
  --texto: #22303c;
  --suave: #6b7b8c;
  --rojo: #c0392b;
  --amarillo: #fff4d6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 15px;
}

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

/* ------------------------------------------------------------- encabezado */
header {
  background: var(--azul);
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 10px 20px;
}
header .brand { font-weight: 700; font-size: 18px; letter-spacing: .3px; }
header .brand span { color: #8fd3bd; font-weight: 400; }
header nav { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; }
header nav a {
  color: #d7e3ef;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 14px;
}
header nav a:hover { background: rgba(255, 255, 255, .12); text-decoration: none; }
header .user { font-size: 13px; color: #b9cadb; }
header .user a { color: #fff; }

.warn {
  background: var(--amarillo);
  border-bottom: 1px solid #e6d08a;
  padding: 9px 20px;
  font-size: 14px;
}
.aviso {
  background: #e4f5ee;
  border: 1px solid #a9ddc9;
  color: #14614a;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
}

main { padding: 22px; max-width: 1400px; margin: 0 auto; }
h1 { font-size: 21px; margin: 0 0 18px; }
h2 { font-size: 16px; margin: 0 0 12px; }

/* ---------------------------------------------------------------- tarjetas */
.tarjetas { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 22px; }
.tarjeta {
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 16px;
}
.tarjeta .n { font-size: 28px; font-weight: 700; color: var(--azul); line-height: 1.1; }
.tarjeta .t { font-size: 13px; color: var(--suave); margin-top: 4px; }

.panel {
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 20px;
}

/* ----------------------------------------------------------------- tablas */
.tabla-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left;
  background: #eef2f6;
  color: #45586b;
  font-weight: 600;
  padding: 9px 10px;
  border-bottom: 1px solid var(--borde);
  white-space: nowrap;
}
td { padding: 8px 10px; border-bottom: 1px solid #eef1f4; vertical-align: middle; }
tr:hover td { background: #fafcfd; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.vacio { text-align: center; color: var(--suave); padding: 26px; }

/* --------------------------------------------------------------- formulario */
form.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
  margin-bottom: 16px;
}
label { display: block; font-size: 12px; color: var(--suave); margin-bottom: 3px; }
input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  padding: 7px 9px;
  border: 1px solid var(--borde);
  border-radius: 6px;
  background: #fff;
  color: var(--texto);
}
input:focus, select:focus { outline: 2px solid #b7d4ec; border-color: var(--azul-claro); }

.btn {
  display: inline-block;
  background: var(--azul);
  color: #fff;
  border: 1px solid var(--azul);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
.btn:hover { background: var(--azul-claro); text-decoration: none; color: #fff; }
.btn.sec { background: #fff; color: var(--azul); }
.btn.sec:hover { background: #eef2f6; color: var(--azul); }
.btn.verde { background: var(--acento); border-color: var(--acento); }
.btn.verde:hover { background: #0c8664; }
.btn.rojo { background: #fff; color: var(--rojo); border-color: #e6b3ac; }
.btn.chico { padding: 4px 9px; font-size: 13px; }

.etiqueta {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 12px;
  background: #eef2f6;
  color: #4a5c6e;
}
.etiqueta.ok { background: #e4f5ee; color: #14614a; }
.etiqueta.mal { background: #fdecea; color: #a5291b; }

.acciones { display: flex; flex-wrap: wrap; gap: 6px; }
.paginacion { display: flex; gap: 8px; align-items: center; margin-top: 14px; font-size: 14px; }
.nota { color: var(--suave); font-size: 13px; margin-top: 10px; }
code, pre { font-family: Consolas, "Courier New", monospace; font-size: 12.5px; }
pre {
  background: #f7f9fb;
  border: 1px solid var(--borde);
  border-radius: 6px;
  padding: 8px;
  margin: 0;
  max-height: 160px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ------------------------------------------------------------------ login */
.login-caja {
  max-width: 380px;
  margin: 9vh auto;
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 30px rgba(31, 59, 87, .09);
}
.login-caja h1 { text-align: center; }
.login-caja .sub { text-align: center; color: var(--suave); font-size: 13px; margin: -12px 0 22px; }
.login-caja input { width: 100%; margin-bottom: 14px; }
.login-caja .btn { width: 100%; }
.error { background: #fdecea; color: #a5291b; padding: 9px 12px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }

@media (max-width: 720px) {
  header { gap: 8px; }
  header nav a { padding: 6px 9px; }
  main { padding: 14px; }
}

@media print {
  header, form.filtros, .btn, .paginacion, .warn { display: none; }
  body { background: #fff; }
  .panel { border: 0; padding: 0; }
}