/* ============================================================
 * theme.css — TEMA de la guía de NÚMEROS ENTEROS (capa LIBRE).
 * SOLO estilos del tema (prefijo ent-): leyenda de color, visuales del
 * concepto (recta, termómetro, saldo) y widgets por toque (recta que salta,
 * clasificador, tablaSignos, agrupador). NO redefine clases `guia-*`.
 * Pisos de letra: lectura ≥17px · apoyo ≥15px · etiquetas MAYÚSCULAS ≥13px.
 * Tap targets ≥44px. Sin overflow horizontal a 360px. Light-mode fijo.
 * Color: positivo/derecha = naranja · negativo/izquierda = navy · resultado = verde.
 * ============================================================ */

/* ===== Paleta del tema (eco de las variables de marca) ===== */
.ent-visual, .ent-wg, .ent-legend, .ent-tools-grid {
  --ent-pos: #C75D08;    /* positivo / derecha / tengo */
  --ent-neg: #283891;    /* negativo / izquierda / debo */
  --ent-res: #1C7A3A;    /* resultado / dónde caes */
  --ent-ink: #181B22;
  --ent-mut: #4b5563;
  --ent-line: #e7e2da;
  --ent-cream: #FFF3E7;
  --ent-wrong-bd: #d6336c;
  --ent-wrong-bg: #fdecf1;
  --ent-wrong-tx: #a01243;
}

/* ===== Leyenda de color ===== */
.ent-legend {
  display: flex; flex-wrap: wrap; gap: 10px 18px;
  margin: 4px 0 18px; padding: 12px 14px;
  border: 2px solid var(--ent-ink); border-radius: 14px; background: #fff;
}
.ent-legend .it { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--ent-mut); line-height: 1.35; }
.ent-legend .it b { color: var(--ent-ink); }
.ent-legend .sw { width: 16px; height: 16px; border-radius: 5px; border: 1.5px solid var(--ent-ink); flex: 0 0 auto; }
.ent-legend .sw.pos { background: var(--ent-pos); }
.ent-legend .sw.neg { background: var(--ent-neg); }
.ent-legend .sw.res { background: var(--ent-res); }

/* ===== Visuales estáticos ===== */
.ent-visual { margin: 14px 0; }

/* recta estática */
.ent-recta-static {
  border: 2px solid var(--ent-line); border-radius: 14px; background: #fff;
  padding: 10px 8px; overflow-x: auto;
}
.ent-recta-svg { width: 100%; min-width: 280px; max-width: 560px; height: auto; display: block; margin: 0 auto; }

/* termómetro */
.ent-thermo {
  display: flex; flex-direction: column; align-items: center;
  border: 2px solid var(--ent-line); border-radius: 14px; background: #fff; padding: 10px;
}
.ent-thermo-svg { width: 120px; height: auto; }
.ent-thermo-cap { margin: 4px 0 0; font-size: 15px; font-weight: 700; color: var(--ent-mut); }

/* saldo / deuda */
.ent-saldo {
  border: 2px solid var(--ent-line); border-radius: 14px; background: #fff; padding: 12px 14px;
  text-align: center;
}
.ent-saldo-bar {
  display: inline-flex; flex-direction: column; align-items: stretch; gap: 0;
  width: 160px; margin: 0 auto 8px; border-radius: 10px; overflow: hidden;
  border: 2px solid var(--ent-ink);
}
.ent-saldo-top, .ent-saldo-bot, .ent-saldo-zero {
  font-size: 15px; font-weight: 800; padding: 6px 8px; text-align: center;
}
.ent-saldo-top { background: var(--ent-cream); color: var(--ent-pos); }
.ent-saldo-zero { background: #fff; color: var(--ent-ink); border-block: 1.5px solid var(--ent-line); font-size: 13px; }
.ent-saldo-bot { background: #eef0f8; color: var(--ent-neg); }
.ent-saldo-read { margin: 0; font-size: 17px; color: var(--ent-ink); }

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

.ent-btn {
  font: inherit; font-weight: 800; font-size: 17px; min-height: 44px; padding: 10px 20px;
  border: 2px solid var(--ent-ink); border-radius: 12px; background: var(--ent-neg); color: #fff;
  cursor: pointer; box-shadow: 3px 3px 0 var(--ent-ink); transition: transform .1s, box-shadow .1s;
}
.ent-btn:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ent-ink); }
.ent-btn:active { transform: none; box-shadow: 1px 1px 0 var(--ent-ink); }
.ent-btn:disabled { opacity: .55; cursor: default; box-shadow: none; transform: none; }
.ent-btn.small { font-size: 15px; min-height: 44px; padding: 8px 16px; margin-top: 10px; }
.ent-btn.ghost { background: #fff; color: var(--ent-ink); box-shadow: none; }
.ent-btn.ghost:hover { border-color: var(--ent-pos); transform: none; box-shadow: none; }

/* ===== Widget ⭐: recta que salta ===== */
.ent-recta-stage { overflow-x: auto; margin: 4px 0 8px; }
.ent-recta-stage .ent-recta-svg { min-width: 320px; }
.ent-token { transition: cx .2s linear; }
.ent-recta-q { margin: 0 0 10px; font-size: 17px; line-height: 1.45; color: var(--ent-ink); }
.ent-op-chip {
  display: inline-block; font-weight: 800; font-size: 16px; padding: 2px 10px; margin: 0 2px;
  border: 2px solid var(--ent-neg); border-radius: 8px; background: #f4f6fc; color: var(--ent-neg);
}
.ent-dir-opts { display: flex; gap: 10px; flex-wrap: wrap; }
.ent-dir-opt {
  flex: 1 1 150px; min-height: 52px; font: inherit; font-weight: 800; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--ent-ink); border-radius: 12px; background: #fff; color: var(--ent-ink);
  cursor: pointer; transition: transform .1s, box-shadow .1s; box-shadow: 3px 3px 0 var(--ent-ink);
}
.ent-dir-opt:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ent-ink); }
.ent-dir-opt.right { border-color: var(--ent-res); background: #e6f5ec; color: var(--ent-res); }
.ent-dir-opt.wrong { border-color: var(--ent-wrong-bd); background: var(--ent-wrong-bg); color: var(--ent-wrong-tx); }
.ent-dir-opt:disabled { cursor: default; }

.ent-recta-fb { margin-top: 12px; display: none; }
.ent-recta-fb.show { display: block; }
.ent-recta-fb.miss {
  font-size: 17px; line-height: 1.45; color: var(--ent-wrong-tx);
  border: 2px solid var(--ent-wrong-bd); background: var(--ent-wrong-bg); border-radius: 12px; padding: 10px 12px;
}
.ent-recta-fb.ok {
  border: 2px solid var(--ent-res); background: #e6f5ec; border-radius: 12px; padding: 12px 14px;
}
.ent-recta-res { margin: 0 0 6px; font-size: 17px; line-height: 1.45; color: var(--ent-ink); }
.ent-recta-fx { overflow-x: auto; }
.ent-recta-fx .katex-display { margin: .3em 0; }
.ent-recta-hint { margin: 6px 0 0; font-size: 15px; color: var(--ent-mut); line-height: 1.4; }
.ent-recta-done, .ent-clas-done, .ent-agr-done { margin: 4px 0 12px; font-size: 17px; line-height: 1.5; color: var(--ent-ink); }

/* ===== Widget: clasificador ===== */
.ent-clas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(86px, 1fr)); gap: 10px; }
.ent-clas-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  min-height: 76px; padding: 10px 6px; font: inherit; cursor: pointer;
  border: 2px solid var(--ent-line); border-radius: 12px; background: #fcfbf9; color: var(--ent-ink);
  transition: transform .1s, border-color .1s;
}
.ent-clas-card:hover { border-color: var(--ent-pos); transform: translateY(-1px); }
.ent-clas-num { font-size: 22px; font-weight: 800; }
.ent-clas-ask { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--ent-mut); }
.ent-clas-card.is-int { border-color: var(--ent-res); background: #e6f5ec; }
.ent-clas-card.is-int .ent-clas-ask { color: var(--ent-res); }
.ent-clas-card.not-int { border-color: var(--ent-neg); background: #eef0f8; }
.ent-clas-card.not-int .ent-clas-ask { color: var(--ent-neg); }
.ent-clas-fb { margin-top: 12px; display: none; font-size: 17px; line-height: 1.45; border-radius: 12px; padding: 10px 12px; }
.ent-clas-fb.show { display: block; }
.ent-clas-fb.ok { border: 2px solid var(--ent-res); background: #e6f5ec; color: var(--ent-ink); }
.ent-clas-fb.no { border: 2px solid var(--ent-neg); background: #eef0f8; color: var(--ent-ink); }

/* ===== Widget: tablaSignos ===== */
.ent-sig-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.ent-sig-cell {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  min-height: 56px; padding: 10px 16px; font: inherit; cursor: pointer;
  border: 2px solid var(--ent-ink); border-radius: 12px; background: #fff; color: var(--ent-ink);
  box-shadow: 3px 3px 0 var(--ent-ink); transition: transform .1s, box-shadow .1s;
}
.ent-sig-cell:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ent-ink); }
.ent-sig-pair { font-size: 20px; font-weight: 800; letter-spacing: .02em; }
.ent-sig-res { font-size: 24px; font-weight: 800; min-width: 28px; text-align: center; color: var(--ent-mut); }
.ent-sig-cell.pos { border-color: var(--ent-res); background: #e6f5ec; }
.ent-sig-cell.pos .ent-sig-res { color: var(--ent-res); }
.ent-sig-cell.neg { border-color: var(--ent-neg); background: #eef0f8; }
.ent-sig-cell.neg .ent-sig-res { color: var(--ent-neg); }
.ent-sig-fb { margin-top: 12px; display: none; font-size: 17px; line-height: 1.45; border: 2px solid var(--ent-line); border-radius: 12px; padding: 10px 12px; }
.ent-sig-fb.show { display: block; }
.ent-sig-fb.ok { border-color: var(--ent-res); background: #e6f5ec; color: var(--ent-ink); }
.ent-sig-fb.no { border-color: var(--ent-neg); background: #eef0f8; color: var(--ent-ink); }
.ent-sig-fb strong { font-size: 19px; }

/* ===== Widget: agrupador ===== */
.ent-agr-expr {
  font-size: 26px; font-weight: 800; text-align: center; letter-spacing: .02em;
  padding: 12px; border: 2px solid var(--ent-line); border-radius: 12px; background: #fcfbf9;
  margin-bottom: 12px; overflow-x: auto;
}
.ent-agr-expr.resolved { border-color: var(--ent-res); background: #e6f5ec; }
.ent-sg-pos { color: var(--ent-pos); }
.ent-sg-neg { color: var(--ent-neg); }
.ent-agr-out { display: none; margin-top: 12px; text-align: center; }
.ent-agr-out.show { display: block; }
.ent-agr-arrow { display: block; font-size: 22px; font-weight: 800; color: var(--ent-mut); margin-bottom: 6px; }
.ent-agr-note { margin: 8px 0 0; font-size: 17px; line-height: 1.45; color: var(--ent-ink); }

/* ===== Herramientas libres ===== */
.ent-tools-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.ent-tool-card h4 { margin: 0 0 4px; font-size: 19px; font-weight: 800; color: var(--ent-ink); }
.ent-tool-sub { margin: 0 0 4px; font-size: 15px; color: var(--ent-mut); line-height: 1.4; }

/* ===== 360px: sin overflow horizontal ===== */
@media (max-width: 380px) {
  .ent-dir-opt { flex-basis: 100%; }
  .ent-sig-grid { grid-template-columns: 1fr; }
  .ent-clas-grid { grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); }
  .ent-agr-expr { font-size: 22px; }
}

/* ===== Movimiento reducido ===== */
@media (prefers-reduced-motion: reduce) {
  .ent-token, .ent-dir-opt, .ent-btn, .ent-sig-cell, .ent-clas-card { transition: none !important; }
}

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