/* ============================================================
 * theme.css — TEMA de la guía de NÚMEROS REALES (capa LIBRE).
 * SOLO estilos del tema (prefijo nr-): leyenda de color, visuales del
 * concepto (recta, anillos-mini, celdas) y widgets por toque (anillos,
 * posicional, recta comparar/distancia). NO redefine clases `guia-*`.
 * Regla CSS+KaTeX: ningún selector descendiente sobre span en cajas
 * que puedan contener \(math\); las píldoras son clases directas.
 * Pisos de letra: lectura ≥17px · apoyo ≥15px · etiquetas MAYÚSCULAS ≥13px.
 * Tap targets ≥44px. Sin overflow horizontal a 360px. Light-mode fijo.
 * ============================================================ */

/* ===== Paleta del tema (eco de las variables de marca) ===== */
.nr-wg, .nr-legend, .nr-visual {
  --nr-x: #C75D08;       /* el número que tocas / lo que buscas */
  --nr-navy: #283891;    /* anillos / conjuntos */
  --nr-green: #1C7A3A;   /* correcto / resultado */
  --nr-ink: #181B22;
  --nr-mut: #4b5563;
  --nr-line: #e7e2da;
  --nr-cream: #FFF3E7;
}

/* ===== Leyenda de color ===== */
.nr-legend {
  display: flex; flex-wrap: wrap; gap: 10px 18px;
  margin: 4px 0 18px; padding: 12px 14px;
  border: 2px solid var(--nr-ink); border-radius: 14px; background: #fff;
}
.nr-legend .it { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--nr-mut); }
.nr-legend .it b { color: var(--nr-ink); }
.nr-legend .sw { width: 16px; height: 16px; border-radius: 5px; border: 1.5px solid var(--nr-ink); flex: 0 0 auto; }
.nr-legend .sw.x { background: var(--nr-x); }
.nr-legend .sw.navy { background: var(--nr-navy); }
.nr-legend .sw.green { background: var(--nr-green); }

/* ===== Visuales estáticos ===== */
.nr-visual { margin: 14px 0; }
.nr-recta-v, .nr-an-mini, .nr-celdas {
  border: 2px solid var(--nr-line); border-radius: 14px; background: #fff;
  padding: 12px 10px;
}
.nr-recta-svg, .nr-an-svg { width: 100%; max-width: 420px; height: auto; display: block; margin: 0 auto; }
.nr-an-cap { margin: 8px 4px 0; font-size: 15px; color: var(--nr-mut); text-align: center; line-height: 1.45; }

/* anillos: resaltado opcional (visual hl) y anillo "caliente" (widget) */
.nr-ring { transition: filter .25s; }
.nr-ring.hl { stroke-width: 3.5; }
.nr-ring.hot { stroke-width: 3.5; filter: drop-shadow(0 0 3px rgba(199, 93, 8, .55)); }

/* punto que cae en su anillo */
.nr-an-dot.drop { animation: nr-drop .55s cubic-bezier(.25, 1.2, .4, 1) both; }
@keyframes nr-drop {
  from { transform: translateY(-46px); opacity: 0; }
  60% { opacity: 1; }
  to { transform: translateY(0); opacity: 1; }
}

/* celdas posicionales (estático) */
.nr-celdas-row { display: flex; justify-content: center; align-items: stretch; gap: 6px; flex-wrap: wrap; }
.nr-celda {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  min-width: 64px; padding: 8px 6px;
  border: 2px solid var(--nr-line); border-radius: 12px; background: #fcfbf9;
}
.nr-celda .pos {
  font-size: 13px; font-weight: 800; letter-spacing: .02em; text-transform: uppercase;
  color: var(--nr-mut); text-align: center; line-height: 1.15;
}
.nr-celda b { font-size: 26px; color: var(--nr-ink); line-height: 1.1; }
.nr-celda.dot { justify-content: flex-end; min-width: 18px; border: none; background: none; font-size: 26px; font-weight: 800; color: var(--nr-ink); padding: 8px 0; }

/* ===== Andamiaje común de widgets ===== */
.nr-wg {
  margin: 16px 0; padding: 16px 14px;
  border: 2px solid var(--nr-ink); border-radius: 16px; background: #fff;
  box-shadow: 4px 4px 0 var(--nr-ink);
}
.nr-wg-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; margin-bottom: 10px; }
.nr-flag {
  font-size: 13px; font-weight: 800; letter-spacing: .03em; text-transform: uppercase;
  color: #fff; background: var(--nr-x); border-radius: 999px; padding: 3px 11px; flex: 0 0 auto;
}
.nr-wg-inst { font-size: 15px; color: var(--nr-mut); line-height: 1.4; }

.nr-btn {
  font: inherit; font-weight: 800; font-size: 17px; min-height: 44px; padding: 10px 20px;
  border: 2px solid var(--nr-ink); border-radius: 12px; background: var(--nr-navy); color: #fff;
  cursor: pointer; box-shadow: 3px 3px 0 var(--nr-ink); transition: transform .1s, box-shadow .1s;
}
.nr-btn:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--nr-ink); }
.nr-btn:active { transform: none; box-shadow: 1px 1px 0 var(--nr-ink); }
.nr-btn.small { font-size: 15px; min-height: 40px; padding: 8px 16px; margin-left: 8px; }
.nr-btn.ghost { background: #fff; color: var(--nr-ink); box-shadow: none; }
.nr-btn.ghost:hover { border-color: var(--nr-x); transform: none; box-shadow: none; }

/* chip de número (interactivo: tinte + cursor; ≥44px) */
.nr-chip {
  font: inherit; font-weight: 800; font-size: 17px; min-height: 44px; min-width: 52px;
  padding: 8px 14px; border: 2px solid var(--nr-navy); border-radius: 12px;
  background: #eef2fb; color: var(--nr-navy); cursor: pointer;
  transition: transform .1s, background .15s, border-color .15s;
}
.nr-chip:hover { transform: translateY(-2px); border-color: var(--nr-x); }
.nr-chip.on { background: var(--nr-x); border-color: var(--nr-x); color: #fff; }
/* versión "solo mostrar" (no botón): plana, sin afford de toque */
.nr-chip.big.show-only { cursor: default; background: var(--nr-cream); border-color: var(--nr-x); color: var(--nr-ink); font-size: 22px; }
.nr-chip.big.show-only:hover { transform: none; }

/* ===== Widget: anillos ===== */
.nr-an-prog { margin: 0 0 8px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--nr-mut); }
.nr-an-prog:empty { display: none; }
.nr-an-chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 10px; }
.nr-an-q { font-size: 17px; font-weight: 700; color: var(--nr-ink); }
.nr-an-map { margin: 4px 0 8px; }
.nr-an-zonas { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 4px 0 8px; }
.nr-an-zonas:empty { display: none; }
.nr-zona {
  font: inherit; font-weight: 700; font-size: 17px; min-height: 48px; padding: 8px 12px;
  border: 2px solid var(--nr-line); border-radius: 12px; background: #fff; color: var(--nr-ink);
  cursor: pointer; text-align: left; transition: transform .1s, border-color .1s;
}
.nr-zona:hover { border-color: var(--nr-x); transform: translateY(-1px); }
.nr-zona.right { border-color: var(--nr-green); background: #e6f5ec; color: var(--nr-green); }
.nr-zona.wrong { border-color: #d6336c; background: #fdecf1; color: #a01243; }
.nr-zona:disabled { cursor: default; opacity: 1; }

/* el porqué = callout (borde completo + fondo tenue, lectura ≥17px) */
.nr-an-why { display: none; margin-top: 10px; padding: 12px 14px; border: 2px solid var(--nr-line); border-radius: 12px; background: #fcfbf9; font-size: 17px; line-height: 1.5; color: var(--nr-ink); }
.nr-an-why.show { display: block; }
.nr-an-why.ok { border-color: var(--nr-green); background: #e6f5ec; }
.nr-an-why.miss { border-color: #d6336c; background: #fdecf1; color: #a01243; }
.nr-an-set {
  display: inline-block; font-size: 15px; font-weight: 800; letter-spacing: .02em;
  padding: 2px 12px; border-radius: 999px; border: 2px solid var(--nr-navy);
  background: #eef2fb; color: var(--nr-navy); margin-right: 6px;
}

/* ===== Widget: posicional ===== */
.nr-pos-num { display: flex; justify-content: center; align-items: flex-end; gap: 6px; flex-wrap: wrap; margin: 6px 0 12px; }
.nr-pos-cif {
  font: inherit; font-weight: 800; font-size: 28px; line-height: 1;
  min-width: 52px; min-height: 56px; padding: 10px 8px;
  border: 2px solid var(--nr-navy); border-radius: 12px; background: #eef2fb; color: var(--nr-navy);
  cursor: pointer; transition: transform .1s, background .15s;
}
.nr-pos-cif:hover { transform: translateY(-2px); }
.nr-pos-cif.on { background: var(--nr-x); border-color: var(--nr-x); color: #fff; }
.nr-pos-dot { font-size: 28px; font-weight: 800; color: var(--nr-ink); align-self: flex-end; padding-bottom: 10px; }
.nr-pos-read { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 10px; min-height: 36px; }
.nr-pos-hint { font-size: 15px; color: var(--nr-mut); }
.nr-pos-chip {
  font-size: 15px; font-weight: 700; padding: 6px 12px; border-radius: 999px;
  border: 2px solid var(--nr-ink); background: #fff; color: var(--nr-ink);
}
.nr-pos-chip b { font-weight: 800; }
.nr-pos-chip.pos { border-color: var(--nr-navy); color: var(--nr-navy); background: #eef2fb; text-transform: uppercase; font-size: 13px; letter-spacing: .02em; align-self: center; }
.nr-pos-chip.abs { border-color: var(--nr-ink); }
.nr-pos-chip.rel { border-color: var(--nr-x); color: var(--nr-x); background: var(--nr-cream); }
.nr-pos-desc { margin: 0 0 10px; font-size: 17px; line-height: 1.5; color: var(--nr-ink); text-align: center; }
.nr-pos-desc:empty { display: none; }
.nr-pos-desc .hl { color: var(--nr-x); }
.nr-pos-switch { text-align: center; }

/* ===== Widget: recta (comparar / distancia) ===== */
.nr-rw-prog { margin: 0 0 8px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--nr-mut); }
.nr-rw-prog:empty { display: none; }
.nr-rw-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.nr-rw-chips:empty { display: none; }
.nr-rw-stage { margin: 4px 0 8px; }
.nr-rw-pt { cursor: pointer; }
.nr-rw-pt:focus { outline: 2px solid var(--nr-x); outline-offset: 2px; border-radius: 8px; }
.nr-rw-pt.done { pointer-events: none; }
.nr-rw-arc { animation: nr-arc .5s ease-out both; }
@keyframes nr-arc { from { opacity: 0; } to { opacity: 1; } }
.nr-rw-fb { display: none; margin-top: 8px; padding: 12px 14px; border: 2px solid var(--nr-line); border-radius: 12px; background: #fcfbf9; font-size: 17px; line-height: 1.5; color: var(--nr-ink); }
.nr-rw-fb.show { display: block; }
.nr-rw-fb.ok { border-color: var(--nr-green); background: #e6f5ec; }
.nr-rw-fb.miss { border-color: #d6336c; background: #fdecf1; color: #a01243; }
.nr-rw-abs { display: inline-block; margin-right: 6px; font-weight: 800; }

/* ===== 360px: sin overflow horizontal ===== */
@media (max-width: 380px) {
  .nr-celda { min-width: 56px; }
  .nr-celda .pos { font-size: 13px; }
  .nr-an-zonas { grid-template-columns: 1fr; }
  .nr-pos-cif { min-width: 46px; font-size: 24px; }
  .nr-btn.small { margin-left: 0; margin-top: 8px; display: inline-block; }
}

/* ===== Movimiento reducido ===== */
@media (prefers-reduced-motion: reduce) {
  .nr-an-dot.drop, .nr-rw-arc { animation: none !important; }
  .nr-btn, .nr-chip, .nr-zona, .nr-pos-cif, .nr-ring { transition: none !important; }
}

/* ===== Impresión: oculta lo interactivo (apoyo, no contenido SEO) ===== */
@media print {
  .nr-wg { display: none !important; }
}