/* ============================================================
 * theme.css — TEMA de la guía de DESIGUALDADES E INECUACIONES (capa LIBRE).
 * SOLO estilos del tema (prefijo dq-): leyenda de color, visuales del concepto
 * (simbolos, recta, region) y widgets por toque (probador, grafica, volteaONo,
 * resolvedor, zonas). 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.
 * Regla CSS+KaTeX: ningún selector descendiente `span` en cajas con math.
 * ============================================================ */

/* ===== Paleta del tema (eco de las variables de marca) ===== */
.dq-visual, .dq-wg, .dq-legend {
  --dq-x: #C75D08;       /* incógnita / objetivo */
  --dq-navy: #283891;    /* el signo y su sentido */
  --dq-green: #1C7A3A;   /* cumple / solución */
  --dq-rose: #d6336c;    /* no cumple */
  --dq-rose-deep: #a01243;
  --dq-ink: #181B22;
  --dq-mut: #4b5563;
  --dq-line: #e7e2da;
  --dq-cream: #FFF3E7;
}

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

/* ===== Visuales estáticos ===== */
.dq-visual { margin: 14px 0; }
.dq-cap { margin: 8px 0 0; font-size: 15px; color: var(--dq-mut); line-height: 1.45; text-align: center; }

/* simbolos: tarjetas de los signos */
.dq-syms { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.dq-sym-card {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  min-width: 130px; padding: 12px 14px;
  border: 2px solid var(--dq-line); border-radius: 14px; background: #fff;
}
.dq-sym { font-size: 34px; font-weight: 800; line-height: 1.1; color: var(--dq-navy); }
.dq-sym-name { font-size: 15px; font-weight: 800; color: var(--dq-ink); text-align: center; }
.dq-sym-ej { font-size: 15px; color: var(--dq-mut); }

/* recta y region: cajas planas (display, sin sombra de botón) */
.dq-rectabox, .dq-regionbox {
  border: 2px solid var(--dq-line); border-radius: 14px; background: #fff;
  padding: 12px 10px;
}
.dq-recta-svg { width: 100%; max-width: 380px; height: auto; display: block; margin: 0 auto; }
.dq-region-svg { width: 100%; max-width: 260px; height: auto; display: block; margin: 0 auto; }

/* ===== Andamiaje común de widgets ===== */
.dq-wg {
  margin: 16px 0; padding: 16px 14px;
  border: 2px solid var(--dq-ink); border-radius: 16px; background: #fff;
  box-shadow: 4px 4px 0 var(--dq-ink);
}
.dq-wg-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; margin-bottom: 12px; }
.dq-flag {
  font-size: 13px; font-weight: 800; letter-spacing: .03em; text-transform: uppercase;
  color: #fff; background: var(--dq-x); border-radius: 999px; padding: 3px 11px; flex: 0 0 auto;
}
.dq-wg-inst { font-size: 15px; color: var(--dq-mut); line-height: 1.4; }
.dq-prog { margin: 0 0 10px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--dq-mut); }
.dq-done { margin: 0 0 12px; font-size: 17px; line-height: 1.5; color: var(--dq-ink); }

.dq-btn {
  font: inherit; font-weight: 800; font-size: 17px; min-height: 44px; padding: 10px 20px;
  border: 2px solid var(--dq-ink); border-radius: 12px; background: var(--dq-navy); color: #fff;
  cursor: pointer; box-shadow: 3px 3px 0 var(--dq-ink); transition: transform .1s, box-shadow .1s;
}
.dq-btn:hover:not(:disabled) { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--dq-ink); }
.dq-btn:active:not(:disabled) { transform: none; box-shadow: 1px 1px 0 var(--dq-ink); }
.dq-btn.small { font-size: 15px; min-height: 44px; padding: 8px 16px; margin-top: 8px; }
.dq-btn.ghost { background: #fff; color: var(--dq-ink); box-shadow: none; }
.dq-btn.ghost:hover { border-color: var(--dq-x); transform: none; box-shadow: none; }
.dq-btn.zona { background: #fff; color: var(--dq-navy); box-shadow: none; font-size: 15px; }
.dq-btn.zona:hover:not(:disabled) { transform: none; box-shadow: none; border-color: var(--dq-navy); }
.dq-btn.zona.ok { color: var(--dq-green); border-color: var(--dq-green); background: #e6f5ec; }
.dq-btn.zona.no { color: var(--dq-rose-deep); border-color: var(--dq-rose); background: #fdecf1; }
.dq-btn.zona:disabled { cursor: default; }

/* opción genérica por toque */
.dq-opt {
  font: inherit; font-weight: 700; font-size: 17px; min-height: 44px; padding: 10px 14px;
  border: 2px solid var(--dq-line); border-radius: 10px; background: #fff; color: var(--dq-ink);
  cursor: pointer; text-align: left; transition: transform .1s, border-color .1s;
}
.dq-opt:hover:not(:disabled) { border-color: var(--dq-x); transform: translateY(-1px); }
.dq-opt.right { border-color: var(--dq-green); background: #e6f5ec; color: var(--dq-green); }
.dq-opt.wrong { border-color: var(--dq-rose); background: #fdecf1; color: var(--dq-rose-deep); }
.dq-opt:disabled { cursor: default; opacity: 1; }
.dq-opts2 { display: flex; flex-wrap: wrap; gap: 8px; }
.dq-opts2.col { flex-direction: column; }
.dq-opts2 .dq-opt { flex: 1 1 150px; }
.dq-opts2.col .dq-opt { flex: 1 1 auto; }

/* feedback común */
.dq-fb { margin: 10px 0 0; font-size: 15px; line-height: 1.45; display: none; }
.dq-fb.show { display: block; }
.dq-fb.ok { color: var(--dq-green); }
.dq-fb.miss { color: var(--dq-rose-deep); }

/* ===== Widget: probador ===== */
.dq-prob-row { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.dq-num {
  min-width: 44px; min-height: 44px; font: inherit; font-size: 17px; font-weight: 800;
  border: 2px solid var(--dq-line); border-radius: 10px; background: #fff; color: var(--dq-ink);
  cursor: pointer; transition: transform .1s, border-color .1s;
}
.dq-num:hover { border-color: var(--dq-navy); transform: translateY(-1px); }
.dq-num.si { border-color: var(--dq-green); background: #e6f5ec; color: var(--dq-green); }
.dq-num.no { border-color: var(--dq-rose); background: #fdecf1; color: var(--dq-rose-deep); text-decoration: line-through; }
.dq-prob-status { margin: 12px 0 0; font-size: 15px; line-height: 1.5; color: var(--dq-mut); }
.dq-prob-status strong { color: var(--dq-ink); }
.dq-prob-resumen { display: block; margin-top: 6px; color: var(--dq-green); font-weight: 700; }

/* ===== Widget: grafica ===== */
.dq-graf-label { margin: 0 0 4px; overflow-x: auto; }
.dq-graf-label .katex-display { margin: .25em 0; }
.dq-graf-line { margin: 4px 0 8px; }
.dq-graf-q { margin: 10px 0 6px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--dq-x); }

/* ===== Widget: regionLab (dos variables y sistemas) ===== */
.dq-rlab-body { margin-top: 4px; }
.dq-rlab-label { margin: 0 0 6px; overflow-x: auto; }
.dq-rlab-label .katex-display { margin: .25em 0; }
.dq-rlab-plane { margin: 4px 0 8px; }

/* ===== Widget: volteaONo ===== */
.dq-vol-card { border: 2px solid var(--dq-line); border-radius: 12px; padding: 14px; background: #fcfbf9; }
.dq-vol-antes { overflow-x: auto; }
.dq-vol-antes .katex-display { margin: .25em 0; }
.dq-vol-op { margin: 6px 0 12px; font-size: 17px; line-height: 1.45; color: var(--dq-ink); }
.dq-vol-optag {
  display: inline-block; font-size: 13px; font-weight: 800; text-transform: uppercase;
  letter-spacing: .03em; color: #fff; background: var(--dq-navy); border-radius: 999px;
  padding: 2px 10px; margin-right: 8px;
}
.dq-vol-opt {
  flex: 1 1 140px; 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(--dq-ink); border-radius: 12px; background: #fff; color: var(--dq-ink);
  cursor: pointer; transition: transform .1s, box-shadow .1s; box-shadow: 3px 3px 0 var(--dq-ink);
}
.dq-vol-opt:hover:not(:disabled) { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--dq-ink); }
.dq-vol-opt.right { border-color: var(--dq-green); background: #e6f5ec; color: var(--dq-green); }
.dq-vol-opt.wrong { border-color: var(--dq-rose); background: #fdecf1; color: var(--dq-rose-deep); }
.dq-vol-opt:disabled { cursor: default; }
.dq-vol-fb { margin-top: 12px; display: none; font-size: 15px; line-height: 1.5; }
.dq-vol-fb.show { display: block; }
.dq-vol-fb.miss { color: var(--dq-rose-deep); }
.dq-vol-fb.ok { color: var(--dq-ink); }
.dq-vol-res { margin: 0; font-size: 15px; font-weight: 800; color: var(--dq-green); }
.dq-vol-why { margin: 4px 0 6px; font-size: 15px; color: var(--dq-mut); }

/* ===== Widget: resolvedor ===== */
.dq-res-now { margin-bottom: 4px; }
.dq-res-fx {
  border: 2px solid var(--dq-line); border-radius: 12px; background: #fcfbf9;
  padding: 6px 10px; overflow-x: auto;
}
.dq-res-fx .katex-display { margin: .3em 0; }
.dq-res-fx.small { border: none; background: transparent; padding: 0; }
.dq-res-lbl { margin: 12px 0 8px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; color: var(--dq-x); }
.dq-res-line { margin: 12px 0 4px; }
.dq-res-result { margin: 8px 0 2px; font-size: 17px; font-weight: 800; color: var(--dq-green); }
.dq-pop { animation: dq-pop .45s ease; }
@keyframes dq-pop {
  0% { transform: scale(0.97); opacity: .4; }
  60% { transform: scale(1.015); opacity: 1; }
  100% { transform: scale(1); }
}

/* ===== Widget: zonas ===== */
.dq-zon-expr { overflow-x: auto; }
.dq-zon-expr .katex-display { margin: .25em 0; }
.dq-zon-line { margin: 6px 0 10px; }
.dq-zon-btns { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.dq-zon-eval { margin-top: 10px; }
.dq-zon-evalfx { overflow-x: auto; }
.dq-zon-evalfx .katex-display { margin: .25em 0; }
.dq-zon-out { margin-top: 8px; }

/* ===== 360px: sin overflow horizontal ===== */
@media (max-width: 380px) {
  .dq-sym-card { min-width: 112px; }
  .dq-opts2 .dq-opt, .dq-vol-opt { flex-basis: 100%; }
  .dq-btn.small { margin-left: 0; }
}

/* ===== Movimiento reducido ===== */
@media (prefers-reduced-motion: reduce) {
  .dq-opt, .dq-btn, .dq-num, .dq-vol-opt { transition: none !important; }
  .dq-pop { animation: none !important; }
}

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