:root {
  color-scheme: light;
  --bg: #f4f6fb;
  --panel-bg: #ffffff;
  --border: #e2e6ef;
  --text: #1f2430;
  --muted: #6b7280;
  --heading: #003c5a;
  --navy: #003c5a;
  --navy-dark: #00263a;
  --primary: #e2a000;
  --primary-dark: #b3800a;
  --green: #1aa15a;
  --amber: #d68a00;
  --red: #d63b3b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08);

  /* superficies derivadas (se re-tematizan en modo oscuro) */
  --input-bg: #ffffff;
  --panel-accent: var(--navy);
  --chip-bg: #eef2ff;
  --chip-text: var(--navy);
  --badge-bg: #eef2ff;
  --badge-live-bg: #e6f7ec;
  --badge-warn-bg: #fff4e0;
  --btn-sec-bg: #e5e9f2;
  --btn-sec-bg-hover: #d7dcea;
  --banner-warn-bg: #fff4e0;
  --banner-warn-text: #8a5a00;
  --banner-warn-border: #f2d38b;
  --topbar-title: #ffffff;
  --topbar-sub: #cfe3ee;
}

/* -------------------------------------------------------------------- */
/* Modo oscuro — se activa con data-theme="dark".                        */
/* El JS resuelve la preferencia (Auto/Claro/Oscuro) y, en Auto, sigue   */
/* la configuración del sistema (prefers-color-scheme).                  */
/* -------------------------------------------------------------------- */
:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0e151f;
    --panel-bg: #18212e;
    --border: #2b3746;
    --text: #e6ecf3;
    --muted: #9aa7b8;
    --heading: #e8eef5;
    --navy: #12283a;          /* barra superior un poco más clara que el fondo */
    --navy-dark: #0a1521;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);

    --input-bg: #101923;
    --panel-accent: var(--primary);
    --chip-bg: #22303f;
    --chip-text: #e6ecf3;
    --badge-bg: #22303f;
    --badge-live-bg: rgba(26, 161, 90, 0.18);
    --badge-warn-bg: rgba(214, 138, 0, 0.18);
    --btn-sec-bg: #2b3746;
    --btn-sec-bg-hover: #354456;
    --banner-warn-bg: rgba(214, 138, 0, 0.15);
    --banner-warn-text: #f0c473;
    --banner-warn-border: rgba(214, 138, 0, 0.4);
    --topbar-title: #f2f6fa;
    --topbar-sub: #9fc0d4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Barlow", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--navy);
  border-bottom: 3px solid var(--primary);
  flex-wrap: wrap;
  gap: 12px;
}
.topbar-title { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 40px; width: auto; }
.topbar-title h1 { margin: 0; font-size: 1.4rem; font-weight: 600; color: var(--topbar-title); }
.subtitle { color: var(--topbar-sub); font-size: 0.85rem; }
.topbar-status { display: flex; align-items: center; gap: 12px; }
.topbar-status .muted { color: var(--topbar-sub); }

.badge {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
}
.badge.live { background: var(--badge-live-bg); color: var(--green); }
.badge.sample, .badge.csv, .badge.json { background: var(--badge-warn-bg); color: var(--amber); }

.muted { color: var(--muted); font-size: 0.8rem; }

.btn {
  border: none;
  background: var(--primary);
  color: var(--navy-dark);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--btn-sec-bg); color: var(--text); }
.btn-secondary:hover { background: var(--btn-sec-bg-hover); }

.btn-tema {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.btn-tema:hover { background: rgba(255, 255, 255, 0.22); }
.btn-tema #tema-icono { font-size: 0.95rem; line-height: 1; }

.banner {
  margin: 12px 24px 0;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
}
.banner-warning { background: var(--banner-warn-bg); color: var(--banner-warn-text); border: 1px solid var(--banner-warn-border); }
.hidden { display: none; }

main { padding: 20px 24px 60px; max-width: 1320px; margin: 0 auto; }

.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.filter-field { display: flex; flex-direction: column; gap: 4px; flex: 1 1 160px; min-width: 160px; }
.filter-field label { font-size: 0.75rem; color: var(--muted); font-weight: 600; }
.filter-field select, .filter-field input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  background: var(--input-bg);
  color: var(--text);
}
.filter-field select[multiple] { min-height: 64px; }

.filter-field-checks { flex: 1 1 200px; min-width: 200px; }
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  max-height: 96px;
  overflow-y: auto;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
}
.check-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
.check-item input { width: auto; margin: 0; accent-color: var(--primary); cursor: pointer; }
.filter-actions { flex: 0 0 auto; align-self: center; min-width: 0; margin-top: 16px; }

.filter-field-periodo { flex: 0 0 auto; display: flex; flex-direction: column; gap: 8px; margin-top: 16px; min-width: 160px; }
.periodo-controls { display: flex; flex-wrap: wrap; gap: 6px; max-width: 240px; }
.btn-chip {
  padding: 6px 10px;
  font-size: 0.78rem;
  background: var(--chip-bg);
  color: var(--chip-text);
  border: 1px solid var(--border);
}
.btn-chip:hover { background: var(--primary); color: var(--navy-dark); }
.periodo-mes { display: flex; flex-direction: row; align-items: center; gap: 8px; }
.periodo-mes label { font-size: 0.75rem; color: var(--muted); font-weight: 600; width: 48px; flex-shrink: 0; }
.periodo-mes input, .periodo-mes select { width: 160px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.85rem; background: var(--input-bg); color: var(--text); }

.filter-field-dates { flex: 0 0 auto; display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.filter-field-date { display: flex; flex-direction: row; align-items: center; gap: 8px; }
.filter-field-date label { font-size: 0.75rem; color: var(--muted); font-weight: 600; width: 38px; flex-shrink: 0; }
.filter-field-date input { width: 150px; }

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.kpi-card {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.kpi-label { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.kpi-value { font-size: 1.8rem; font-weight: 700; color: var(--heading); }
.kpi-sub { font-size: 0.78rem; color: var(--muted); }

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-top: 3px solid var(--panel-accent);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.panel h2 { margin-top: 0; font-size: 1.1rem; font-weight: 600; color: var(--heading); }
.panel h3 { font-size: 0.9rem; color: var(--muted); margin: 4px 0 8px; }

.panel-kpis { display: flex; gap: 24px; margin-bottom: 12px; }
.mini-kpi { display: flex; flex-direction: column; }
.mini-kpi span { font-size: 0.75rem; color: var(--muted); }
.mini-kpi strong { font-size: 1.2rem; }

.chart-grid { display: grid; gap: 20px; }
.chart-grid.two-col { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.chart-box { position: relative; min-height: 260px; }
.chart-box.tall { min-height: 340px; }
.chart-box canvas { max-height: 340px; }

.table-box { overflow-x: auto; min-height: unset; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; }
td a { color: var(--primary); }

.pill { padding: 2px 8px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; color: white; }
.pill-verde { background: var(--green); }
.pill-ambar { background: var(--amber); }
.pill-rojo { background: var(--red); }

footer { text-align: center; padding: 20px; color: var(--muted); font-size: 0.8rem; }

@media (max-width: 720px) {
  .topbar { flex-direction: column; align-items: flex-start; }
  main { padding: 16px; }
}