/* ============================================================
 * theme.css — TEMA de la guía de REGLA DE TRES (capa LIBRE).
 * SOLO estilos del tema (prefijo rt-): leyenda de color, visuales del
 * concepto (tabla-flechas, proporción) y widgets por toque (decididor,
 * cruz, areaConstante). NO redefine clases `guia-*` (capa bloqueada).
 * 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) ===== */
.rt-tf, .rt-prop, .rt-wg, .rt-legend {
  --rt-x: #C75D08;       /* incógnita / objetivo */
  --rt-navy: #283891;    /* lo que mueves / multiplicas */
  --rt-green: #1C7A3A;   /* resultado / sube */
  --rt-ink: #181B22;
  --rt-mut: #4b5563;
  --rt-line: #e7e2da;
  --rt-cream: #FFF3E7;
}

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

/* ===== Visual estático: tabla-flechas ===== */
.rt-visual { margin: 14px 0; }
.rt-tf {
  border: 2px solid var(--rt-line); border-radius: 14px; background: #fff;
  padding: 14px 12px;
}
.rt-tf-title {
  margin: 0 0 10px; font-size: 13px; font-weight: 800; letter-spacing: .03em;
  text-transform: uppercase; color: var(--rt-mut); text-align: center;
}
.rt-tf-row { display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; }
.rt-tf-col {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  min-width: 78px; padding: 8px 6px;
  border: 2px solid var(--rt-line); border-radius: 12px; background: #fcfbf9;
}
.rt-tf-mag { font-size: 15px; font-weight: 800; color: var(--rt-ink); text-align: center; line-height: 1.15; }
.rt-tf-arrbox { width: 26px; height: 32px; }
.rt-arr { width: 100%; height: 100%; display: block; }
.rt-tf-word { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; }
.rt-tf-col.up { border-color: var(--rt-green); }
.rt-tf-col.up .rt-tf-word { color: var(--rt-green); }
.rt-tf-col.down { border-color: var(--rt-x); }
.rt-tf-col.down .rt-tf-word { color: var(--rt-x); }
.rt-tf-col.x { border-color: var(--rt-navy); background: #f4f6fc; }
.rt-tf-col.x .rt-tf-word { color: var(--rt-navy); }
.rt-tf-sep { color: var(--rt-line); font-weight: 800; font-size: 20px; }

/* ===== Visual estático: proporción ===== */
.rt-prop {
  border: 2px solid var(--rt-line); border-radius: 14px; background: #fff;
  padding: 14px; text-align: center;
}
.rt-prop-mags {
  display: flex; justify-content: center; gap: 22px;
  font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em;
  color: var(--rt-mut); margin-bottom: 2px;
}
.rt-prop-fx { margin: 2px 0; overflow-x: auto; }
.rt-prop-fx .katex-display { margin: .3em 0; }
.rt-prop-cap { margin: 6px 0 0; font-size: 15px; color: var(--rt-mut); }
.rt-prop-cap .rt-x, .rt-x { color: var(--rt-x); font-weight: 800; }

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

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

/* opción genérica por toque (paso de la cruz) */
.rt-opt {
  font: inherit; font-weight: 700; font-size: 17px; min-height: 44px; padding: 10px 14px;
  border: 2px solid var(--rt-line); border-radius: 10px; background: #fff; color: var(--rt-ink);
  cursor: pointer; text-align: left; transition: transform .1s, border-color .1s;
}
.rt-opt:hover { border-color: var(--rt-x); transform: translateY(-1px); }
.rt-opt.right { border-color: var(--rt-green); background: #e6f5ec; color: var(--rt-green); }
.rt-opt.wrong { border-color: #d6336c; background: #fdecf1; color: #a01243; }
.rt-opt:disabled { cursor: default; opacity: 1; }

/* ===== Widget: decididor ===== */
.rt-dec-prog { margin: 0 0 8px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--rt-mut); }
.rt-dec-card { border: 2px solid var(--rt-line); border-radius: 12px; padding: 14px; background: #fcfbf9; }
.rt-dec-enun { margin: 0 0 12px; font-size: 17px; line-height: 1.45; color: var(--rt-ink); }
.rt-dec-q { font-weight: 800; color: var(--rt-navy); }
.rt-dec-opts { display: flex; gap: 10px; flex-wrap: wrap; }
.rt-dec-opt {
  flex: 1 1 130px; min-height: 52px; font: inherit; font-weight: 800; font-size: 17px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  border: 2px solid var(--rt-ink); border-radius: 12px; background: #fff; color: var(--rt-ink);
  cursor: pointer; transition: transform .1s, box-shadow .1s; box-shadow: 3px 3px 0 var(--rt-ink);
}
.rt-dec-opt:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--rt-ink); }
.rt-dec-opt .rt-dec-arr { font-size: 22px; line-height: 1; }
.rt-dec-opt.sube .rt-dec-arr { color: var(--rt-green); }
.rt-dec-opt.baja .rt-dec-arr { color: var(--rt-x); }
.rt-dec-opt.right { border-color: var(--rt-green); background: #e6f5ec; color: var(--rt-green); }
.rt-dec-opt.wrong { border-color: #d6336c; background: #fdecf1; color: #a01243; }
.rt-dec-opt:disabled { cursor: default; }

.rt-dec-fb { margin-top: 12px; display: none; }
.rt-dec-fb.show { display: block; }
.rt-dec-fb.miss { font-size: 15px; color: #a01243; line-height: 1.45; }
.rt-dec-fb .rt-class {
  display: inline-block; font-size: 18px; font-weight: 800; letter-spacing: .04em;
  padding: 4px 14px; border-radius: 999px; border: 2px solid var(--rt-ink); margin-right: 8px;
}
.rt-dec-fb.directa .rt-class { background: #e6f5ec; color: var(--rt-green); border-color: var(--rt-green); }
.rt-dec-fb.inversa .rt-class { background: var(--rt-cream); color: var(--rt-x); border-color: var(--rt-x); }
.rt-dec-fb .rt-class-why { display: block; margin: 8px 0 4px; font-size: 15px; color: var(--rt-mut); line-height: 1.45; }
.rt-dec-done { margin: 0 0 12px; font-size: 17px; line-height: 1.5; color: var(--rt-ink); }

/* ===== Widget: cruz ===== */
.rt-cruz-prog { margin: 0 0 10px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--rt-mut); }
.rt-cruz-grid { display: flex; justify-content: center; margin-bottom: 4px; }
.rt-cruz-svg { width: 100%; max-width: 320px; height: auto; }
.rt-diag { transition: opacity .25s; }
.rt-cruz-step { margin-top: 6px; }
.rt-cruz-lbl { margin: 0 0 8px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--rt-x); }
.rt-cruz-opts { display: flex; flex-direction: column; gap: 8px; }
.rt-cruz-mult { margin: 0 0 10px; font-size: 16px; color: var(--rt-ink); line-height: 1.45; }
.rt-cruz-mult .navy { color: var(--rt-navy); font-weight: 800; }
.rt-cruz-fb { margin: 10px 0 0; font-size: 15px; line-height: 1.45; display: none; }
.rt-cruz-fb.show { display: block; }
.rt-cruz-fb.ok { color: var(--rt-green); }
.rt-cruz-fb.miss { color: #a01243; }
.rt-cruz-fx { margin-top: 8px; }
.rt-cruz-reveal { overflow-x: auto; }
.rt-cruz-reveal .katex-display { margin: .3em 0; }
.rt-cruz-result { margin: 6px 0 0; font-size: 17px; color: var(--rt-ink); }
.rt-cruz-result .rt-x { color: var(--rt-green); }
.rt-cruz-done { margin: 0 0 12px; font-size: 17px; line-height: 1.5; color: var(--rt-ink); }

/* ===== Widget: areaConstante ===== */
.rt-area-stage { display: flex; justify-content: center; }
.rt-area-svg { width: 100%; max-width: 280px; height: auto; }
.rt-area-rect { transition: x .25s, y .25s, width .25s, height .25s; }
.rt-area-read { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px; margin: 6px 0 12px; }
.rt-chip {
  font-size: 16px; font-weight: 800; padding: 4px 11px; border-radius: 999px;
  border: 2px solid var(--rt-ink); background: #fff;
}
.rt-chip.navy { color: var(--rt-navy); }
.rt-chip.green { color: var(--rt-green); background: #e6f5ec; border-color: var(--rt-green); }
.rt-op { font-size: 17px; font-weight: 800; color: var(--rt-mut); }
.rt-area-ctrl { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 12px; }
.rt-area-cap { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--rt-mut); }
.rt-area-row { display: flex; align-items: center; gap: 10px; }
.rt-area-btn {
  width: 48px; height: 48px; font-size: 26px; font-weight: 800; line-height: 1;
  border: 2px solid var(--rt-ink); border-radius: 12px; background: var(--rt-navy); color: #fff;
  cursor: pointer; box-shadow: 3px 3px 0 var(--rt-ink); transition: transform .1s, box-shadow .1s;
}
.rt-area-btn:hover:not(:disabled) { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--rt-ink); }
.rt-area-btn:active:not(:disabled) { transform: none; box-shadow: 1px 1px 0 var(--rt-ink); }
.rt-area-btn:disabled { opacity: .4; cursor: default; box-shadow: none; }
.rt-area-val { min-width: 44px; text-align: center; font-size: 22px; font-weight: 800; color: var(--rt-navy); }
.rt-area-range { width: 100%; max-width: 280px; display: block; margin: 0 auto 10px; height: 44px; accent-color: var(--rt-navy); cursor: pointer; }
.rt-area-status { margin: 0; font-size: 15px; line-height: 1.45; color: var(--rt-mut); text-align: center; }
.rt-area-status strong { color: var(--rt-ink); }

/* ===== 360px: sin overflow horizontal ===== */
@media (max-width: 380px) {
  .rt-tf-col { min-width: 64px; }
  .rt-dec-opt { flex-basis: 100%; }
  .rt-btn.small { margin-left: 0; margin-top: 8px; display: inline-block; }
}

/* ===== Movimiento reducido ===== */
@media (prefers-reduced-motion: reduce) {
  .rt-diag, .rt-area-rect, .rt-dec-opt, .rt-btn, .rt-area-btn { transition: none !important; }
}

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