/* ============================================================
 * theme.css — TEMA de la guía de PRODUCTOS NOTABLES (capa LIBRE).
 * SOLO estilos del tema (prefijo pn-): leyenda de color, widget del cuadrado
 * de área, expansor, comprobador e identificador. NO redefine clases guia-*.
 * Pisos de letra: lectura ≥17px · apoyo ≥15px · etiquetas (MAYÚSCULAS) ≥13px.
 * Tap ≥44px. Color por término: 🟠 origen · 🔵 lo que se construye · 🟢 resultado.
 * ============================================================ */

/* Espejo local de la paleta de marca (los SVG llevan el hex en theme.js). */
.pn-wg,
.pn-legend {
  --pn-o: #C75D08;     /* origen (a, b) */
  --pn-n: #283891;     /* lo que se construye (2ab, triples) */
  --pn-g: #1C7A3A;     /* el resultado */
  --pn-ink: var(--guia-ink, #181B22);
  --pn-mut: var(--guia-muted, #4b5563);
  --pn-line: var(--guia-line, #e7e2da);
}

/* ===== Leyenda de color ===== */
.pn-legend {
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  margin: 0 0 18px; padding: 14px 16px;
  border: 2px solid var(--pn-line); border-radius: 14px; background: #fff;
}
.pn-legend .it {
  display: flex; align-items: center; gap: 8px;
  font-size: 15px; line-height: 1.4; color: var(--pn-mut);
}
.pn-legend .it b { color: var(--pn-ink); }
.pn-legend .sw {
  width: 16px; height: 16px; border-radius: 5px; flex: 0 0 auto;
  border: 2px solid currentColor;
}
.pn-legend .sw.o { color: var(--pn-o); background: rgba(199, 93, 8, 0.16); }
.pn-legend .sw.n { color: var(--pn-n); background: rgba(40, 56, 145, 0.16); }
.pn-legend .sw.g { color: var(--pn-g); background: rgba(28, 122, 58, 0.16); }

/* ===== Caja base de widget ===== */
.pn-wg {
  margin: 18px 0; padding: 16px;
  border: 2px solid var(--pn-ink); border-radius: 16px; background: #fff;
  box-shadow: 4px 4px 0 var(--pn-ink);
}
.pn-wg-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; margin-bottom: 12px; }
.pn-flag {
  font-size: 13px; font-weight: 800; letter-spacing: .03em; text-transform: uppercase;
  color: #fff; background: var(--pn-o); border-radius: 999px; padding: 4px 11px; flex: 0 0 auto;
}
.pn-wg-inst { font-size: 15px; color: var(--pn-mut); line-height: 1.45; }
.pn-wg-inst strong { color: var(--pn-ink); }

/* ===== Botones del tema ===== */
.pn-btn {
  font: inherit; font-weight: 800; font-size: 17px; min-height: 44px; padding: 10px 20px;
  border: 2px solid var(--pn-ink); border-radius: 12px; background: var(--pn-n); color: #fff;
  cursor: pointer; box-shadow: 3px 3px 0 var(--pn-ink); transition: transform .1s, box-shadow .1s;
}
.pn-btn:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--pn-ink); }
.pn-btn:active { transform: none; box-shadow: 1px 1px 0 var(--pn-ink); }
.pn-btn.small { font-size: 15px; min-height: 40px; padding: 8px 16px; }
.pn-btn.ghost { background: #fff; color: var(--pn-ink); box-shadow: none; }
.pn-btn.ghost:hover { border-color: var(--pn-o); transform: none; box-shadow: none; }

/* ===== Prompt / opciones / feedback (compartido por expansor, comprobador, identificador) ===== */
.pn-prompt { font-size: 17px; font-weight: 700; color: var(--pn-ink); margin: 6px 0 10px; line-height: 1.4; }
.pn-opts { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.pn-opts .guia-opt { text-align: left; }
.pn-fb { font-size: 15px; line-height: 1.45; margin: 6px 0 0; min-height: 1.2em; }
.pn-fb.ok { color: var(--pn-g); font-weight: 700; }
.pn-fb.miss { color: var(--pn-o); font-weight: 700; }

/* ===== Traza de la expansión (expansor / comprobador / identificador) ===== */
.pn-exp-trace, .pn-comp-trace {
  margin-bottom: 12px; padding: 12px 14px;
  border: 2px dashed var(--pn-line); border-radius: 12px; background: #fcfbf8;
  min-height: 48px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
}
.pn-trace-lead { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--pn-mut); }
.pn-trace-eq { font-size: 19px; }
.pn-done {
  font-size: 17px; font-weight: 800; color: var(--pn-g);
  margin: 6px 0 12px; padding: 10px 14px;
  border: 2px solid var(--pn-g); border-radius: 12px; background: rgba(28, 122, 58, 0.07);
}
.pn-exp-foot, .pn-iden-foot { margin-top: 12px; }

/* ===== Cuadrado de área ===== */
.pn-area-stage { display: flex; justify-content: center; margin: 4px 0 12px; }
.pn-area-svg { width: 100%; max-width: 320px; height: auto; }
.pn-area-svg rect { transition: opacity .2s; }
.pn-area-read {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px 8px;
  margin-bottom: 12px;
}
.pn-chip {
  font-size: 15px; font-weight: 800; padding: 5px 11px; border-radius: 999px;
  border: 2px solid currentColor; background: #fff;
}
.pn-chip.n { color: var(--pn-n); }
.pn-chip.o { color: var(--pn-o); }
.pn-chip.o.off { opacity: .35; text-decoration: line-through; }
.pn-chip.g { color: var(--pn-g); }
.pn-chip.total { color: var(--pn-ink); background: #f3eee4; }
.pn-op { font-size: 17px; font-weight: 800; color: var(--pn-mut); }
.pn-area-ctrls { display: flex; flex-wrap: wrap; gap: 14px 28px; justify-content: center; margin-bottom: 10px; }
.pn-area-ctrl { display: flex; align-items: center; gap: 10px; }
.pn-area-cap { font-size: 16px; font-weight: 800; color: var(--pn-ink); }
.pn-area-row { display: flex; align-items: center; gap: 8px; }
.pn-area-btn {
  font: inherit; font-weight: 800; font-size: 22px; line-height: 1;
  width: 44px; height: 44px; min-width: 44px;
  border: 2px solid var(--pn-ink); border-radius: 12px; background: #fff; color: var(--pn-ink);
  cursor: pointer;
}
.pn-area-btn:disabled { opacity: .35; cursor: not-allowed; }
.pn-area-val { font-size: 18px; font-weight: 800; min-width: 24px; text-align: center; color: var(--pn-n); }
.pn-area-toggle { display: flex; justify-content: center; margin-bottom: 10px; }
.pn-area-status {
  font-size: 16px; line-height: 1.5; color: var(--pn-ink); text-align: center;
  margin: 0; padding: 10px 12px; border-radius: 12px; background: #faf8f3;
}
.pn-area-status strong { color: var(--pn-o); }

/* ===== Comprobador (cierre) ===== */
.pn-comp-final {
  font-size: 16px; line-height: 1.6; color: var(--pn-ink);
  margin: 6px 0 12px; padding: 12px 14px;
  border: 2px solid var(--pn-line); border-radius: 12px; background: #fcfbf8;
}
.pn-comp-final strong { color: var(--pn-g); }

/* ===== Identificador (galería + árbol) ===== */
.pn-gal { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.pn-gal-chip {
  font: inherit; font-weight: 800; font-size: 16px; min-height: 44px; padding: 8px 14px;
  border: 2px solid var(--pn-ink); border-radius: 12px; background: #fff; color: var(--pn-ink);
  cursor: pointer; transition: transform .1s, box-shadow .1s, background .1s;
}
.pn-gal-chip:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--pn-ink); }
.pn-gal-chip.active { background: var(--pn-o); color: #fff; box-shadow: 3px 3px 0 var(--pn-ink); }
.pn-iden-hint { font-size: 16px; color: var(--pn-mut); margin: 4px 0; }
.pn-q-expr { font-size: 16px; color: var(--pn-mut); margin: 0 0 8px; }
.pn-q-expr strong { color: var(--pn-ink); }
.pn-iden-detect {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px;
  margin: 4px 0 10px; padding: 10px 14px;
  border: 2px solid var(--pn-g); border-radius: 12px; background: rgba(28, 122, 58, 0.07);
}
.pn-detect-lbl {
  font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em;
  color: #fff; background: var(--pn-g); border-radius: 999px; padding: 4px 11px;
}
.pn-detect-name { font-size: 18px; font-weight: 800; color: var(--pn-g); }
.pn-iden-now { font-size: 16px; color: var(--pn-ink); margin: 0 0 10px; }

/* ===== KaTeX dentro de la traza: que no desborde en móvil ===== */
.pn-trace-eq .katex, .pn-comp-final .katex { font-size: 1.05em; }
.pn-wg .katex-display { margin: 0; }

@media (max-width: 480px) {
  .pn-wg { padding: 14px; }
  .pn-trace-eq { font-size: 17px; }
  .pn-prompt { font-size: 16px; }
}

/* ===== Accesibilidad: respeta el modo sin animación ===== */
@media (prefers-reduced-motion: reduce) {
  .pn-btn, .pn-gal-chip, .pn-area-svg rect { transition: none !important; }
  .pn-btn:hover, .pn-gal-chip:hover { transform: none; }
}

/* ===== Impresión: los widgets interactivos no aportan en papel ===== */
@media print {
  .pn-wg { display: none !important; }
  .pn-legend { box-shadow: none; }
}