/* Tokens de color: claro por defecto; oscuro por preferencia del sistema o por el botón. */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f2f1ed;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --s1: #2a78d6;          /* serie 1: azul */
  --s2: #eb6834;          /* serie 2: naranja */
  --accent: #1c5cab;      /* enlaces y selección */
  --accent-wash: #e6effb;
  --good: #006300;
  --serious: #ec835a;
  --warning: #fab219;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #9a988f;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --s1: #3987e5;
    --s2: #d95926;
    --accent: #86b6ef;
    --accent-wash: #1c2b40;
    --good: #0ca30c;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232321;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #9a988f;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --s1: #3987e5;
  --s2: #d95926;
  --accent: #86b6ef;
  --accent-wash: #1c2b40;
  --good: #0ca30c;
  --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px;
}
h1, h2, h3 { line-height: 1.25; margin: 0; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 .6em; }
.muted { color: var(--muted); }
.ink2 { color: var(--ink-2); }
.small { font-size: .86rem; }
.num { font-variant-numeric: tabular-nums; }

/* Encabezado y navegación */
header.top {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.top .wrap { display: flex; gap: 16px; align-items: flex-start; justify-content: space-between; padding-top: 20px; padding-bottom: 12px; }
.top h1 { font-size: 1.55rem; }
.top .sub { color: var(--ink-2); margin-top: 4px; }
.theme-btn {
  flex: none; border: 1px solid var(--border); background: var(--surface-2); color: var(--ink);
  border-radius: 999px; padding: 6px 12px; font: inherit; font-size: .85rem; cursor: pointer;
}
nav.tabs {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface); border-bottom: 1px solid var(--border);
}
nav.tabs .wrap { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
nav.tabs .wrap::-webkit-scrollbar { display: none; }
nav.tabs a {
  flex: none; padding: 12px 12px 10px; text-decoration: none; color: var(--ink-2);
  border-bottom: 2px solid transparent; font-weight: 500; white-space: nowrap;
}
nav.tabs a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
main { padding: 20px 0 48px; }
section.panel { display: none; }
section.panel.activo { display: block; }
.panel > .wrap > * + * { margin-top: 20px; }

/* Tarjetas */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; box-shadow: var(--shadow);
}
.grid { display: grid; gap: 12px; }
.grid.tiles { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.grid.recs { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.dos { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.tile .valor { font-size: 1.9rem; font-weight: 650; line-height: 1.1; }
.tile .etq { color: var(--ink-2); font-size: .88rem; margin-top: 4px; }
.lead { font-size: 1.02rem; color: var(--ink-2); max-width: 72ch; }

/* Recomendaciones */
.rec { display: flex; flex-direction: column; gap: 6px; }
.rec .cat { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.rec h3 { font-size: 1rem; }
.rec .prod { font-weight: 600; }
.rec .precio { font-size: 1.35rem; font-weight: 650; }
.rec .meta { display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: .86rem; color: var(--ink-2); }
.rec p { color: var(--ink-2); font-size: .92rem; margin: 0; }
.rec .acciones { margin-top: auto; padding-top: 6px; display: flex; gap: 12px; flex-wrap: wrap; font-size: .9rem; }

/* Alertas: icono + etiqueta, nunca solo color */
.alerta { display: flex; gap: 12px; align-items: flex-start; border-left: 4px solid var(--warning); }
.alerta.serio { border-left-color: var(--serious); }
.alerta .icono { flex: none; width: 22px; height: 22px; }
.alerta .nivel { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-2); }
.alerta h3 { font-size: .98rem; margin: 2px 0 4px; }
.alerta p { margin: 0; color: var(--ink-2); font-size: .92rem; }

/* Filtros: una fila arriba de lo que afectan */
.filtros { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: flex-end; }
.filtros label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--ink-2); font-weight: 500; }
.filtros select, .filtros input[type="number"] {
  font: inherit; font-size: .92rem; color: var(--ink); background: var(--surface);
  border: 1px solid var(--axis); border-radius: 8px; padding: 6px 8px; min-width: 0;
}
.filtros .rango { min-width: 220px; }
.filtros .rango output { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.filtros input[type="range"] { width: 100%; accent-color: var(--accent); }
.filtros .check { flex-direction: row; align-items: center; gap: 6px; font-size: .9rem; color: var(--ink); padding-bottom: 6px; }
.filtros .check input { accent-color: var(--accent); width: 16px; height: 16px; }
.contador { font-size: .9rem; color: var(--ink-2); }
.subtabs { display: flex; gap: 6px; flex-wrap: wrap; }
.subtabs button {
  font: inherit; font-size: .92rem; border: 1px solid var(--border); background: var(--surface);
  color: var(--ink-2); padding: 6px 12px; border-radius: 999px; cursor: pointer;
}
.subtabs button[aria-pressed="true"] { background: var(--accent-wash); color: var(--ink); border-color: var(--accent); font-weight: 600; }

/* Gráficas */
.chart-card h3 { margin-bottom: 2px; }
.chart-card .desc { color: var(--ink-2); font-size: .88rem; margin-bottom: 8px; }
.chart { position: relative; width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { fill: var(--muted); font-size: 11px; font-family: inherit; }
.chart .grid-line { stroke: var(--grid); stroke-width: 1; }
.chart .axis-line { stroke: var(--axis); stroke-width: 1; }
.chart .ref-line { stroke: var(--ink-2); stroke-width: 1.5; }
.chart .ref-label { fill: var(--ink-2); font-weight: 600; }
.chart .dot { stroke: var(--surface); stroke-width: 2; transition: r .1s; }
.chart .dot.s1 { fill: var(--s1); }
.chart .dot.s2 { fill: var(--s2); }
.chart .dot.activo { stroke: var(--ink); }
.chart .anillo { fill: none; stroke: var(--ink); stroke-width: 1.5; }
.leyenda i.anillo { background: none; border: 1.5px solid var(--ink); width: 12px; height: 12px; }
.chart .lbl { fill: var(--ink); font-weight: 600; paint-order: stroke; stroke: var(--surface); stroke-width: 3px; stroke-linejoin: round; }
.chart .bar { fill: var(--s1); }
.chart .bar.activo { opacity: .8; }
.chart .val { fill: var(--ink); font-weight: 600; }
.chart .cat-lbl { fill: var(--ink-2); }
.chart .conn { stroke: var(--axis); stroke-width: 2; }
.leyenda { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .86rem; color: var(--ink-2); margin: 4px 0 8px; }
.leyenda span { display: inline-flex; align-items: center; gap: 6px; }
.leyenda i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.leyenda i.s1 { background: var(--s1); }
.leyenda i.s2 { background: var(--s2); }
.leyenda i.ref { width: 16px; height: 2px; border-radius: 0; background: var(--ink-2); }
.tooltip {
  position: absolute; pointer-events: none; z-index: 5; min-width: 160px; max-width: 260px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
  box-shadow: 0 4px 18px rgba(0,0,0,.14); font-size: .84rem; color: var(--ink-2); display: none;
}
.tooltip strong { display: block; color: var(--ink); font-size: 1rem; }
.tooltip .t-nombre { color: var(--ink); font-weight: 600; margin: 2px 0; }

/* Tablas */
.tabla-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--grid); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--ink-2); font-weight: 600; background: var(--surface-2); white-space: nowrap; position: sticky; top: 0; }
th button { all: unset; cursor: pointer; display: inline-flex; gap: 4px; align-items: center; }
th button:focus-visible { outline: 2px solid var(--accent); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.prod-row { cursor: pointer; }
tr.prod-row:hover td { background: var(--accent-wash); }
tr.prod-row td:first-child { min-width: 220px; }
tr.detalle td { background: var(--surface-2); }
.nombre-prod { font-weight: 600; color: var(--ink); }
.modelo { color: var(--muted); font-size: .82rem; }
.chip { display: inline-block; font-size: .74rem; padding: 1px 7px; border-radius: 999px; border: 1px solid var(--border); color: var(--ink-2); margin: 2px 4px 0 0; white-space: nowrap; }
.chip.rec { border-color: var(--accent); color: var(--accent); font-weight: 600; }
.precios-lista { display: grid; gap: 4px; margin: 4px 0; }
.precios-lista div { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; }
.precios-lista .p { font-weight: 650; font-variant-numeric: tabular-nums; min-width: 84px; }
.nota { color: var(--ink-2); font-size: .88rem; margin-top: 6px; }
.expand-hint { font-size: .8rem; color: var(--muted); }

/* Fotos de producto: fondo blanco para que se vean igual en tema claro y oscuro */
.foto { display: block; flex: none; object-fit: contain; background: #fff; border-radius: 8px; border: 1px solid var(--border); padding: 3px; }
.foto.vacia { background: var(--surface-2); padding: 0; }
.celda-nombre { display: flex; gap: 10px; align-items: flex-start; }
.detalle-prod { display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; position: sticky; left: 10px; max-width: min(1120px, calc(100vw - 60px)); }
.detalle-prod > div { flex: 1 1 260px; min-width: 0; }
.rec .rec-foto { align-self: center; margin-bottom: 4px; }
.rec .rec-foto .foto { width: 150px; height: 150px; }
.tooltip .tip-foto { float: right; margin: 0 0 4px 8px; width: 72px; height: 72px; }
td a.small { white-space: nowrap; }

/* Fallas */
.falla h3 { font-size: 1rem; margin-bottom: 6px; }
.falla dl { margin: 0; display: grid; gap: 6px; font-size: .9rem; }
.falla dt { font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.falla dd { margin: 0; color: var(--ink-2); }
.freq { display: inline-flex; gap: 3px; vertical-align: middle; margin-right: 4px; }
.freq i { width: 8px; height: 8px; border-radius: 50%; background: var(--axis); display: inline-block; }
.freq i.on { background: var(--ink-2); }
.costo-track { position: relative; height: 8px; background: var(--surface-2); border-radius: 4px; margin: 6px 0 2px; }
.costo-track span { position: absolute; top: 0; bottom: 0; background: var(--s1); border-radius: 4px; }
.fuentes-mini { font-size: .8rem; }

/* Lista de verificación */
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checklist li { display: flex; gap: 10px; align-items: flex-start; }
.checklist input { margin-top: 4px; width: 16px; height: 16px; accent-color: var(--accent); flex: none; }

.fuentes-lista { padding-left: 18px; margin: 0; display: grid; gap: 6px; }
footer { color: var(--muted); font-size: .84rem; padding: 24px 0 40px; border-top: 1px solid var(--border); }

@media (max-width: 640px) {
  .top h1 { font-size: 1.3rem; }
  .tile .valor { font-size: 1.55rem; }
  .filtros .rango { min-width: 100%; }
  .filtros label { flex: 1 1 140px; }
}
@media (forced-colors: active) {
  .chart .dot.s1, .leyenda i.s1 { fill: CanvasText; background: CanvasText; }
}
@media print {
  nav.tabs, .theme-btn, .filtros { display: none; }
  section.panel { display: block !important; break-before: page; }
}