/* ==========================================================================
   Atlas Matemáticas Aplicadas — Hoja de estilos principal
   Autor: Jeshua Romero Guadarrama
   Tokens de diseño, disposición general y componentes.
   ========================================================================== */

/* ----------------------- Tokens de diseño ----------------------- */
:root {
  --fuente: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --fuente-titulo: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  --fuente-mono: "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;

  --fondo: #f5f6fb;
  --superficie: #ffffff;
  --superficie-2: #edeff7;
  --borde: #dce0ee;
  --tinta: #12152b;
  --tinta-suave: #4a506b;
  --tinta-tenue: #8189a3;

  --acento: #2563eb;
  --acento-2: #0ea5e9;
  --acento-tinta: #ffffff;
  --grad-acento: linear-gradient(135deg, #0ea5e9, #6366f1);

  --geo: #0891b2;
  --alg: #7c3aed;
  --dif: #2563eb;
  --int: #0d9488;
  --edo: #db2777;
  --pro: #d97706;
  --est: #059669;
  --num: #ea580c;
  --opt: #dc2626;
  --dis: #a21caf;
  --tec: #2563eb;

  --ok: #16a34a;
  --error: #dc2626;

  --radio: 14px;
  --radio-s: 9px;
  --sombra: 0 1px 2px rgba(15, 23, 42, 0.05), 0 8px 28px rgba(51, 65, 130, 0.1);
  --sombra-alta: 0 4px 14px rgba(15, 23, 42, 0.12), 0 20px 56px rgba(51, 65, 130, 0.2);
  --transicion: 170ms cubic-bezier(0.3, 0.6, 0.3, 1);
}

html[data-tema="oscuro"] {
  --fondo: #0d1020;
  --superficie: #161a2e;
  --superficie-2: #1f2440;
  --borde: #2d3352;
  --tinta: #e8eaf6;
  --tinta-suave: #a7aec9;
  --tinta-tenue: #6d7594;

  --acento: #60a5fa;
  --acento-2: #38bdf8;
  --acento-tinta: #10122b;
  --grad-acento: linear-gradient(135deg, #38bdf8, #818cf8);

  --geo: #22d3ee;
  --alg: #a78bfa;
  --dif: #60a5fa;
  --int: #2dd4bf;
  --edo: #f472b6;
  --pro: #fbbf24;
  --est: #34d399;
  --num: #fb923c;
  --opt: #f87171;
  --dis: #e879f9;
  --tec: #60a5fa;

  --ok: #4ade80;
  --error: #f87171;

  --sombra: 0 1px 2px rgba(0, 0, 0, 0.45), 0 8px 28px rgba(0, 0, 0, 0.38);
  --sombra-alta: 0 4px 14px rgba(0, 0, 0, 0.5), 0 20px 56px rgba(0, 0, 0, 0.55);
}

/* ----------------------- Base ----------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 16px;
  line-height: 1.65;
  color: var(--tinta);
  background:
    radial-gradient(1100px 500px at 85% -10%, color-mix(in srgb, var(--acento) 7%, transparent), transparent 60%),
    radial-gradient(900px 420px at -10% 0%, color-mix(in srgb, var(--geo) 5%, transparent), transparent 55%),
    var(--fondo);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 0.5em; }
h1, h2 { font-family: var(--fuente-titulo); letter-spacing: -0.015em; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--acento); }
button { font-family: inherit; font-size: inherit; cursor: pointer; }
svg { display: block; max-width: 100%; }
code { font-family: var(--fuente-mono); font-size: 0.9em; background: var(--superficie-2); padding: 1px 6px; border-radius: 5px; }
[hidden] { display: none !important; }

::selection { background: var(--acento); color: var(--acento-tinta); }

:focus-visible {
  outline: 2px solid var(--acento);
  outline-offset: 2px;
  border-radius: 4px;
}

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--borde); border-radius: 999px; border: 3px solid var(--fondo); }
::-webkit-scrollbar-thumb:hover { background: var(--tinta-tenue); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ----------------------- Cabecera ----------------------- */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--superficie) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--borde);
}

.cabecera::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--geo), var(--alg), var(--dif), var(--int), var(--edo), var(--pro), var(--est), var(--num), var(--opt), var(--dis));
  opacity: 0.75;
}

.cabecera-contenido {
  max-width: 1180px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--fuente-titulo);
  font-weight: 700;
  font-size: 1.18rem;
  text-decoration: none;
  color: var(--tinta);
  margin-right: auto;
}

.marca-icono {
  font-size: 1.45rem;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--grad-acento);
  box-shadow: var(--sombra);
}

.nav-principal { display: flex; gap: 4px; flex-wrap: wrap; }

.nav-principal a {
  padding: 8px 15px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--tinta-suave);
  font-weight: 600;
  font-size: 0.94rem;
  transition: background var(--transicion), color var(--transicion), transform var(--transicion);
}

.nav-principal a:hover { background: var(--superficie-2); color: var(--tinta); transform: translateY(-1px); }

.nav-principal a.activo {
  background: var(--grad-acento);
  color: var(--acento-tinta);
  box-shadow: var(--sombra);
}

.boton-tema {
  border: 1px solid var(--borde);
  background: var(--superficie);
  color: var(--tinta);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  transition: transform var(--transicion), box-shadow var(--transicion);
}

.boton-tema:hover { transform: rotate(20deg) scale(1.05); box-shadow: var(--sombra); }

/* ----------------------- Disposición general ----------------------- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 90px;
}

.vista { animation: aparecer 260ms cubic-bezier(0.2, 0.7, 0.3, 1); }

@keyframes aparecer {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* ----------------------- Portada ----------------------- */
.heroe {
  text-align: center;
  padding: 54px 16px 42px;
  position: relative;
}

.heroe h1 {
  font-size: clamp(2.1rem, 5.4vw, 3.6rem);
  margin-bottom: 0.4em;
  background: linear-gradient(120deg, var(--tinta) 20%, var(--acento) 55%, var(--edo) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--tinta);
}

.heroe .subtitulo {
  font-size: 1.14rem;
  color: var(--tinta-suave);
  max-width: 740px;
  margin: 0 auto 30px;
}

.heroe-acciones {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.boton {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}

.boton:hover { transform: translateY(-2px); box-shadow: var(--sombra-alta); }
.boton:active { transform: translateY(0); }

.boton-primario { background: var(--grad-acento); color: var(--acento-tinta); box-shadow: var(--sombra); }

.boton-secundario {
  background: var(--superficie);
  color: var(--tinta);
  border-color: var(--borde);
}

.boton-secundario:hover { border-color: var(--acento); }

.cifras {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: 42px 0;
}

.cifra {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 20px 12px 16px;
  text-align: center;
  transition: transform var(--transicion), box-shadow var(--transicion);
}

.cifra:hover { transform: translateY(-3px); box-shadow: var(--sombra); }

.cifra strong {
  display: block;
  font-family: var(--fuente-titulo);
  font-size: 2.3rem;
  line-height: 1.1;
  background: var(--grad-acento);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--acento);
}

.cifra span { color: var(--tinta-tenue); font-size: 0.88rem; }

.seccion-titulo {
  font-family: var(--fuente-titulo);
  font-size: 1.45rem;
  margin: 44px 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.rejilla-categorias {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 14px;
}

.tarjeta-categoria {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 18px;
  text-decoration: none;
  color: var(--tinta);
  overflow: hidden;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}

.tarjeta-categoria::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cat-color, var(--acento)), color-mix(in srgb, var(--cat-color, var(--acento)) 20%, transparent));
}

.tarjeta-categoria::after {
  content: "";
  position: absolute;
  top: -46px;
  right: -46px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--cat-color, var(--acento)) 14%, transparent), transparent 70%);
  pointer-events: none;
}

.tarjeta-categoria:hover {
  transform: translateY(-5px);
  box-shadow: var(--sombra-alta);
  border-color: color-mix(in srgb, var(--cat-color, var(--acento)) 55%, var(--borde));
}

.cat-cabecera { display: flex; align-items: center; gap: 12px; }

.cat-icono {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-size: 1.45rem;
  border-radius: 13px;
  background: color-mix(in srgb, var(--cat-color, var(--acento)) 14%, var(--superficie));
  border: 1px solid color-mix(in srgb, var(--cat-color, var(--acento)) 35%, transparent);
  transition: transform var(--transicion);
}

.tarjeta-categoria:hover .cat-icono { transform: scale(1.12) rotate(-6deg); }

.cat-cabecera h3 { margin: 0; font-size: 1.06rem; line-height: 1.2; }

.cat-desc { margin: 0; color: var(--tinta-suave); font-size: 0.87rem; flex: 1; }

.cat-pie {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

.cat-contador {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 999px;
  color: var(--cat-color, var(--acento));
  background: color-mix(in srgb, var(--cat-color, var(--acento)) 12%, transparent);
}

.cat-flecha {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--tinta-tenue);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--transicion), transform var(--transicion), color var(--transicion);
}

.tarjeta-categoria:hover .cat-flecha {
  opacity: 1;
  transform: none;
  color: var(--cat-color, var(--acento));
}

@media (hover: none) {
  .cat-flecha { opacity: 1; transform: none; }
}

/* Ley del día */
.tarjeta-dia {
  background:
    radial-gradient(420px 130px at 90% -10%, color-mix(in srgb, var(--cat-color, var(--acento)) 16%, transparent), transparent),
    var(--superficie);
  border-width: 1px;
  box-shadow: var(--sombra);
}

/* ----------------------- Catálogo ----------------------- */
.controles-catalogo {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
}

.buscador { flex: 1 1 280px; position: relative; }

.buscador input {
  width: 100%;
  padding: 13px 16px 13px 44px;
  border-radius: 999px;
  border: 1px solid var(--borde);
  background: var(--superficie);
  color: var(--tinta);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transicion), box-shadow var(--transicion);
}

.buscador input:focus {
  border-color: var(--acento);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--acento) 15%, transparent);
}

.buscador::before {
  content: "🔍";
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.95rem;
  opacity: 0.65;
}

.filtros { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--borde);
  background: var(--superficie);
  color: var(--tinta-suave);
  font-weight: 600;
  font-size: 0.85rem;
  transition: all var(--transicion);
}

.chip:hover {
  border-color: var(--chip-color, var(--acento));
  color: var(--tinta);
  transform: translateY(-1px);
  box-shadow: var(--sombra);
}

.chip.activo {
  background: var(--chip-color, var(--acento));
  border-color: var(--chip-color, var(--acento));
  color: #fff;
  box-shadow: 0 3px 12px color-mix(in srgb, var(--chip-color, var(--acento)) 40%, transparent);
}

html[data-tema="oscuro"] .chip.activo { color: #10122b; }

.chip-n {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 1px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, currentColor 14%, transparent);
}

.resumen-resultados { color: var(--tinta-tenue); font-size: 0.9rem; margin: 0 0 14px; }

.rejilla-leyes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
}

.tarjeta-ley {
  position: relative;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}

.tarjeta-ley::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cat-color, var(--acento)), transparent 70%);
  opacity: 0.85;
}

.tarjeta-ley:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra);
  border-color: color-mix(in srgb, var(--cat-color, var(--acento)) 50%, var(--borde));
  background: linear-gradient(170deg, color-mix(in srgb, var(--cat-color, var(--acento)) 5%, var(--superficie)), var(--superficie) 40%);
}

.tarjeta-ley .etiquetas { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.insignia {
  display: inline-block;
  padding: 3.5px 11px;
  border-radius: 999px;
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  background: var(--cat-color, var(--acento));
}

html[data-tema="oscuro"] .insignia { color: #10122b; }

.insignia-interactivo {
  background: color-mix(in srgb, var(--cat-color, var(--acento)) 10%, transparent);
  color: var(--cat-color, var(--acento));
  border: 1px solid color-mix(in srgb, var(--cat-color, var(--acento)) 55%, transparent);
}

html[data-tema="oscuro"] .insignia-interactivo { color: var(--cat-color, var(--acento)); }

.tarjeta-ley h3 { font-size: 1.08rem; margin: 0; font-family: var(--fuente-titulo); }

.tarjeta-ley .enunciado {
  margin: 0;
  color: var(--tinta-suave);
  font-size: 0.92rem;
  font-style: italic;
  flex: 1;
}


.sin-resultados { text-align: center; padding: 60px 20px; color: var(--tinta-tenue); }

/* ----------------------- Interactivos ----------------------- */
.rejilla-interactivos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tarjeta-interactivo {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 20px;
  cursor: pointer;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.tarjeta-interactivo:hover { transform: translateY(-4px); box-shadow: var(--sombra); border-color: color-mix(in srgb, var(--acento) 40%, var(--borde)); }

.tarjeta-interactivo .icono {
  font-size: 1.7rem;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--superficie-2);
}

.tarjeta-interactivo h3 { margin: 0; font-size: 1.05rem; font-family: var(--fuente-titulo); }
.tarjeta-interactivo p { margin: 0; color: var(--tinta-suave); font-size: 0.9rem; flex: 1; }

.panel-interactivo {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px;
  margin-top: 8px;
  box-shadow: var(--sombra);
}

.panel-interactivo .volver {
  border: 1px solid var(--borde);
  background: var(--superficie-2);
  color: var(--tinta);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  margin-bottom: 16px;
  transition: transform var(--transicion), border-color var(--transicion);
}

.panel-interactivo .volver:hover { transform: translateX(-3px); border-color: var(--acento); }

.panel-interactivo h2 { font-size: 1.6rem; }

.panel-interactivo .descripcion { color: var(--tinta-suave); max-width: 760px; }

.zona-sim { margin-top: 18px; display: grid; gap: 16px; }

.fila-controles {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.fila-controles label { font-weight: 600; font-size: 0.92rem; }

.fila-controles input[type="range"] { accent-color: var(--acento); width: 220px; cursor: pointer; }

.fila-controles select,
.fila-controles input[type="text"] {
  padding: 9px 12px;
  border-radius: var(--radio-s);
  border: 1px solid var(--borde);
  background: var(--superficie);
  color: var(--tinta);
  font-size: 0.95rem;
}

.boton-sim {
  padding: 9px 19px;
  border-radius: 999px;
  border: none;
  background: var(--grad-acento);
  color: var(--acento-tinta);
  font-weight: 700;
  box-shadow: var(--sombra);
  transition: transform var(--transicion), box-shadow var(--transicion);
}

.boton-sim:hover { transform: translateY(-2px); box-shadow: var(--sombra-alta); }
.boton-sim:active { transform: translateY(0); }
.boton-sim:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

.boton-sim.secundario {
  background: var(--superficie-2);
  color: var(--tinta);
  border: 1px solid var(--borde);
  box-shadow: none;
}

.boton-sim.secundario:hover { border-color: var(--acento); }

.lienzo-sim {
  background: var(--superficie-2);
  border: 1px solid var(--borde);
  border-radius: var(--radio-s);
  padding: 16px;
  overflow-x: auto;
}

.nota-sim { font-size: 0.88rem; color: var(--tinta-tenue); margin: 0; }

.marcador { font-size: 1.05rem; font-weight: 700; }
.marcador .ok { color: var(--ok); }
.marcador .mal { color: var(--error); }

/* Tabla genérica */
.tabla-sim { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
.tabla-sim th, .tabla-sim td { padding: 7px 10px; border-bottom: 1px solid var(--borde); text-align: left; }
.tabla-sim th { color: var(--tinta-tenue); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.06em; }
.tabla-sim tbody tr { transition: background var(--transicion); }
.tabla-sim tbody tr:hover { background: color-mix(in srgb, var(--acento) 5%, transparent); }


/* ----------------------- Estudio (quiz) ----------------------- */
.panel-estudio {
  max-width: 760px;
  margin: 0 auto;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 30px;
  box-shadow: var(--sombra);
}

.progreso-quiz {
  height: 8px;
  border-radius: 999px;
  background: var(--superficie-2);
  overflow: hidden;
  margin-bottom: 20px;
}

.progreso-quiz > div {
  height: 100%;
  background: var(--grad-acento);
  border-radius: 999px;
  transition: width 260ms ease;
}

.pregunta-quiz { font-size: 1.15rem; font-weight: 600; margin-bottom: 6px; }

.contexto-quiz { color: var(--tinta-tenue); font-size: 0.85rem; margin-bottom: 18px; }

.opciones-quiz { display: grid; gap: 10px; }

.opcion-quiz {
  text-align: left;
  padding: 13px 17px;
  border-radius: var(--radio-s);
  border: 1px solid var(--borde);
  background: var(--superficie);
  color: var(--tinta);
  font-size: 0.98rem;
  transition: border-color var(--transicion), background var(--transicion), transform var(--transicion);
}

.opcion-quiz:hover:not(:disabled) {
  border-color: var(--acento);
  background: color-mix(in srgb, var(--acento) 6%, var(--superficie));
  transform: translateX(3px);
}

.opcion-quiz.correcta {
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 14%, var(--superficie));
  font-weight: 700;
}

.opcion-quiz.incorrecta {
  border-color: var(--error);
  background: color-mix(in srgb, var(--error) 12%, var(--superficie));
}

.opcion-quiz:disabled { cursor: default; }

.retro-quiz {
  margin-top: 16px;
  padding: 14px 17px;
  border-radius: var(--radio-s);
  background: var(--superficie-2);
  border-left: 3px solid var(--acento);
  font-size: 0.95rem;
}

.retro-quiz strong.bien { color: var(--ok); }
.retro-quiz strong.mal { color: var(--error); }

.pie-quiz {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.resultado-final { text-align: center; padding: 20px 0; }

.resultado-final .nota {
  font-family: var(--fuente-titulo);
  font-size: 3.4rem;
  font-weight: 800;
  background: var(--grad-acento);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--acento);
  display: block;
}

/* ----------------------- Pie de página ----------------------- */
.pie {
  border-top: 1px solid var(--borde);
  padding: 30px 20px;
  text-align: center;
  color: var(--tinta-tenue);
  font-size: 0.9rem;
}

.pie a { color: var(--tinta-suave); }

/* ----------------------- Adaptable ----------------------- */
@media (max-width: 640px) {
  .cabecera-contenido { padding: 10px 12px; }
  .nav-principal a { padding: 7px 10px; font-size: 0.85rem; }
  main { padding: 20px 14px 60px; }
  .heroe { padding-top: 34px; }
}

@media print {
  .cabecera, .pie, .boton-tema, .controles-catalogo { display: none; }
  body { background: #fff; color: #000; }
  .tarjeta-ley { break-inside: avoid; box-shadow: none; }
}

/* ==========================================================================
   Componentes propios de Atlas Matemáticas Aplicadas
   ========================================================================== */

/* ----------------------- Controles de simulador ----------------------- */
.control-rango { display: inline-flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 0.9rem; }
.control-rango input[type="range"] { accent-color: var(--acento); width: 200px; cursor: pointer; }
.control-numero { font-weight: 600; font-size: 0.9rem; }
.control-numero input, .fila-controles input[type="number"] {
  width: 84px; padding: 7px 9px; border-radius: var(--radio-s); border: 1px solid var(--borde);
  background: var(--superficie); color: var(--tinta); font-size: 0.95rem; font-family: var(--fuente-mono);
}
.fila-controles label { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.fila-controles input[type="checkbox"] { accent-color: var(--acento); width: 17px; height: 17px; }
.fila-controles textarea { width: 100%; min-height: 70px; padding: 10px; border-radius: var(--radio-s); border: 1px solid var(--borde); background: var(--superficie); color: var(--tinta); font-family: var(--fuente-mono); font-size: 0.9rem; }

.panel-datos { margin: 0; }
.rejilla-datos { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.rejilla-datos > div {
  background: var(--superficie-2); border: 1px solid var(--borde); border-radius: var(--radio-s);
  padding: 10px 13px; display: flex; flex-direction: column; gap: 2px; min-width: 0;
}
.rejilla-datos span { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--tinta-tenue); }
.rejilla-datos strong { font-family: var(--fuente-mono); font-size: 0.95rem; word-break: break-word; }

.matriz { display: inline-flex; flex-direction: column; padding: 4px 10px; border-left: 2px solid var(--tinta-suave); border-right: 2px solid var(--tinta-suave); border-radius: 6px; font-family: var(--fuente-mono); }
.matriz > span { display: flex; gap: 6px; }
.matriz em { font-style: normal; min-width: 52px; text-align: right; padding: 1px 4px; }

.cuadricula-celdas { display: grid; gap: 2px; }
.cuadricula-celdas > div { aspect-ratio: 1; border-radius: 3px; background: var(--superficie); }

/* ----------------------- Página de tema ----------------------- */
.pagina-tema { max-width: 860px; margin: 0 auto; }
.tema-cabecera { position: relative; padding: 28px 30px 24px; border-radius: var(--radio); background: var(--superficie); border: 1px solid var(--borde); border-top: 6px solid var(--cat-color, var(--acento)); box-shadow: var(--sombra); overflow: hidden; margin-bottom: 22px; }
.tema-cabecera::after { content: ""; position: absolute; top: -60px; right: -60px; width: 220px; height: 220px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--cat-color, var(--acento)) 16%, transparent), transparent 70%); pointer-events: none; }
.tema-cabecera h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); margin: 8px 0 6px; }
.tema-cabecera .resumen { color: var(--tinta-suave); font-size: 1.08rem; margin: 0 0 14px; max-width: 680px; }
.tema-acciones { display: flex; gap: 10px; flex-wrap: wrap; position: relative; z-index: 1; }
.miga { color: var(--tinta-tenue); font-size: 0.88rem; margin: 0 0 14px; }
.miga a { color: var(--tinta-suave); text-decoration: none; }
.miga a:hover { color: var(--acento); }

.insignia-nivel { background: var(--superficie-2); color: var(--tinta-suave); border: 1px solid var(--borde); }
html[data-tema="oscuro"] .insignia-nivel { color: var(--tinta-suave); }

.tema-seccion { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); padding: 24px 28px; margin-bottom: 18px; }
.tema-seccion h2 { font-size: 1.28rem; margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
.tema-seccion h2 .num { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; font-size: 0.85rem; font-family: var(--fuente); color: #fff; background: var(--cat-color, var(--acento)); flex: 0 0 auto; }
html[data-tema="oscuro"] .tema-seccion h2 .num { color: #10122b; }
.tema-seccion p { font-size: 1.02rem; }
.tema-seccion p:last-child { margin-bottom: 0; }

.lista-formulas { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.lista-formulas li { display: grid; grid-template-columns: minmax(120px, 0.6fr) 1.4fr; gap: 12px; align-items: center; padding: 10px 14px; border-radius: var(--radio-s); background: color-mix(in srgb, var(--cat-color, var(--acento)) 6%, var(--superficie-2)); border-left: 3px solid var(--cat-color, var(--acento)); }
.lista-formulas .nombre-formula { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--tinta-suave); font-weight: 700; }
.formula { font-family: var(--fuente-titulo); font-size: 1.12rem; font-style: italic; letter-spacing: 0.01em; overflow-x: auto; }
@media (max-width: 560px) { .lista-formulas li { grid-template-columns: 1fr; gap: 4px; } }

.zona-sim { margin-top: 0; display: grid; gap: 16px; }

/* Pestañas de código */
.pestanas { display: flex; gap: 6px; border-bottom: 1px solid var(--borde); margin-bottom: 12px; flex-wrap: wrap; }
.pestana { padding: 8px 16px; border: none; background: transparent; color: var(--tinta-suave); font-weight: 700; border-bottom: 3px solid transparent; margin-bottom: -1px; border-radius: 8px 8px 0 0; transition: color var(--transicion), border-color var(--transicion), background var(--transicion); }
.pestana:hover { background: var(--superficie-2); color: var(--tinta); }
.pestana.activa { color: var(--acento); border-bottom-color: var(--acento); }
.bloque-codigo { position: relative; }
.bloque-codigo pre { margin: 0; padding: 16px 18px; border-radius: var(--radio-s); background: #0f172a; color: #e2e8f0; font-family: var(--fuente-mono); font-size: 0.86rem; line-height: 1.55; overflow-x: auto; tab-size: 4; }
html[data-tema="oscuro"] .bloque-codigo pre { background: #090c1a; border: 1px solid var(--borde); }
.codigo-acciones { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; align-items: center; }
.pista-codigo { font-size: 0.85rem; color: var(--tinta-tenue); margin: 0; }

.tok-c { color: #94a3b8; font-style: italic; }
.tok-k { color: #c084fc; }
.tok-s { color: #86efac; }
.tok-n { color: #fbbf24; }
.tok-f { color: #7dd3fc; }

/* Navegación entre temas */
.tema-vecinos { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.tema-vecinos a { flex: 1 1 240px; display: flex; flex-direction: column; gap: 3px; padding: 14px 18px; border-radius: var(--radio); background: var(--superficie); border: 1px solid var(--borde); text-decoration: none; color: var(--tinta); transition: transform var(--transicion), border-color var(--transicion); }
.tema-vecinos a:hover { transform: translateY(-2px); border-color: var(--acento); }
.tema-vecinos a span { font-size: 0.78rem; color: var(--tinta-tenue); text-transform: uppercase; letter-spacing: 0.05em; }
.tema-vecinos a.siguiente { text-align: right; }

/* Tarjeta de tema en catálogo (reutiliza .tarjeta-ley) */
.tarjeta-ley .pie-tarjeta { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 0; color: var(--tinta-tenue); font-size: 0.82rem; }
.tarjeta-ley .pie-tarjeta .sim-etq { color: var(--cat-color, var(--acento)); font-weight: 700; }
.tarjeta-ley .enunciado { font-style: normal; }


/* Ruta de aprendizaje en portada */
.ruta { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.ruta a { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radio); background: var(--superficie); border: 1px solid var(--borde); text-decoration: none; color: var(--tinta); transition: transform var(--transicion), box-shadow var(--transicion); }
.ruta a:hover { transform: translateY(-3px); box-shadow: var(--sombra); }
.ruta .paso { flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 0.85rem; color: #fff; background: var(--cat-color, var(--acento)); }
html[data-tema="oscuro"] .ruta .paso { color: #10122b; }
.ruta strong { display: block; font-size: 0.95rem; }
.ruta span.desc { font-size: 0.82rem; color: var(--tinta-suave); }

@media (max-width: 640px) {
  .tema-seccion { padding: 18px; }
  .tema-cabecera { padding: 20px; }
  .control-rango input[type="range"] { width: 160px; }
}

/* Temas relacionados */
.relacionadas { display: flex; flex-wrap: wrap; gap: 8px; }
.relacionadas button {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--borde); background: var(--superficie-2);
  color: var(--tinta); font-size: 0.88rem; transition: border-color var(--transicion), transform var(--transicion);
}
.relacionadas button:hover { border-color: var(--cat-color, var(--acento)); transform: translateY(-1px); }

/* ----------------------- Editor de código ----------------------- */
.editor {
  --editor-alto: 320px;
  border-radius: var(--radio-s); overflow: hidden; border: 1px solid #1e293b; background: #0f172a; color: #e2e8f0;
  font-family: var(--fuente-mono); font-size: 0.88rem; line-height: 1.6; box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.editor-barra { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 7px 12px; background: #1e293b; font-family: var(--fuente); font-size: 0.74rem; color: #94a3b8; }
.editor-lenguaje { font-weight: 700; color: #cbd5e1; }
.editor-atajo { color: #64748b; }
.editor-cuerpo { display: flex; height: var(--editor-alto); }
.editor-numeros { margin: 0; padding: 12px 8px 12px 12px; text-align: right; color: #475569; background: #0b1120; user-select: none; overflow: hidden; min-width: 46px; font: inherit; line-height: inherit; }
.editor-capa { position: relative; flex: 1; min-width: 0; overflow: hidden; }
.editor-resaltado, .editor-texto { position: absolute; inset: 0; margin: 0; padding: 12px 14px; font: inherit; line-height: inherit; white-space: pre; tab-size: 2; overflow: auto; box-sizing: border-box; }
.editor-resaltado { pointer-events: none; color: #e2e8f0; scrollbar-width: none; }
.editor-resaltado::-webkit-scrollbar { display: none; }
.editor-texto { background: transparent; color: transparent; caret-color: #f8fafc; border: none; resize: none; outline: none; }
.editor-texto::selection { background: rgba(96, 165, 250, 0.35); }
.editor:focus-within { border-color: var(--acento); box-shadow: 0 0 0 4px color-mix(in srgb, var(--acento) 18%, transparent); }
.editor.solo-lectura .editor-cuerpo { height: auto; max-height: 520px; overflow: auto; }
.editor.solo-lectura .editor-capa { overflow: visible; }
.editor.solo-lectura .editor-resaltado { position: static; overflow: visible; }
.editor.solo-lectura .editor-texto { display: none; }
.editor.solo-lectura .editor-numeros { overflow: visible; }
.editor .tok-c { color: #7c8ba1; font-style: italic; }
.editor .tok-k { color: #c084fc; }
.editor .tok-s { color: #86efac; }
.editor .tok-n { color: #fbbf24; }
.editor .tok-f { color: #7dd3fc; }

/* ----------------------- Laboratorio ----------------------- */
.lab { display: grid; gap: 18px; }

.lab-cabecera {
  position: relative; overflow: hidden; background: var(--grad-acento); color: #fff; border-radius: var(--radio);
  padding: 26px 30px; display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; box-shadow: var(--sombra);
}
.lab-cabecera::before { content: "∑ ∫ π"; position: absolute; right: 26px; top: -18px; font-family: var(--fuente-titulo); font-size: 6rem; opacity: 0.12; letter-spacing: 0.1em; pointer-events: none; }
.lab-cabecera h2 { margin: 0 0 4px; color: #fff; font-size: 1.6rem; }
.lab-cabecera p { margin: 0; opacity: 0.92; max-width: 640px; font-size: 0.98rem; }
.lab-cabecera code { background: rgba(255, 255, 255, 0.18); color: #fff; }
.lab-cifras { display: flex; gap: 10px; flex-wrap: wrap; position: relative; }
.lab-cifra { background: rgba(255, 255, 255, 0.16); backdrop-filter: blur(6px); border-radius: 12px; padding: 8px 16px; text-align: center; min-width: 88px; }
.lab-cifra strong { display: block; font-size: 1.35rem; font-family: var(--fuente-titulo); line-height: 1.1; }
.lab-cifra span { font-size: 0.74rem; opacity: 0.9; }

.lab-galeria { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.lab-tarjeta {
  position: relative; display: flex; flex-direction: column; gap: 8px; padding: 16px 16px 14px; border-radius: var(--radio); background: var(--superficie);
  border: 1px solid var(--borde); cursor: pointer; overflow: hidden; text-align: left; color: var(--tinta); font: inherit;
  transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}
.lab-tarjeta::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--cat-color, var(--acento)); }
.lab-tarjeta:hover { transform: translateY(-4px); box-shadow: var(--sombra); border-color: color-mix(in srgb, var(--cat-color, var(--acento)) 50%, var(--borde)); }
.lab-tarjeta.activa { border-color: var(--cat-color, var(--acento)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--cat-color, var(--acento)) 22%, transparent); }
.lab-tarjeta .icono { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem; background: color-mix(in srgb, var(--cat-color, var(--acento)) 14%, var(--superficie-2)); }
.lab-tarjeta h4 { margin: 0; font-size: 1rem; font-family: var(--fuente-titulo); }
.lab-tarjeta p { margin: 0; color: var(--tinta-suave); font-size: 0.85rem; flex: 1; }
.lab-tarjeta .pie { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 0.74rem; color: var(--cat-color, var(--acento)); font-weight: 700; }
.lab-tarjeta .dificultad { color: var(--tinta-tenue); font-weight: 600; letter-spacing: 0.06em; }
.lab-tarjeta.hecha::after { content: "✅"; position: absolute; top: 12px; right: 12px; font-size: 1rem; }

.lab-mesa { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 16px; align-items: start; }
@media (max-width: 960px) { .lab-mesa { grid-template-columns: 1fr; } }

.lab-panel { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); padding: 16px; box-shadow: var(--sombra); }
.lab-panel-cabecera { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.lab-panel h3 { margin: 0; font-size: 1.02rem; display: flex; gap: 8px; align-items: center; }
.lab-panel h3 small { font-weight: 500; color: var(--tinta-tenue); font-size: 0.8rem; }
.lab-acciones { display: flex; gap: 8px; flex-wrap: wrap; }
.lab-acciones .boton-sim { padding: 8px 15px; font-size: 0.9rem; }

.reto-enunciado { border-left: 4px solid var(--pro); background: color-mix(in srgb, var(--pro) 9%, var(--superficie-2)); padding: 12px 16px; border-radius: 0 var(--radio-s) var(--radio-s) 0; margin-bottom: 12px; font-size: 0.95rem; }
.reto-enunciado strong { display: block; margin-bottom: 3px; }
.reto-enunciado .pista { margin: 6px 0 0; font-size: 0.85rem; color: var(--tinta-suave); }
.reto-resultado { margin-top: 10px; padding: 12px 16px; border-radius: var(--radio-s); font-weight: 600; }
.reto-resultado.ok { background: color-mix(in srgb, var(--ok) 14%, var(--superficie)); border: 1px solid var(--ok); color: var(--ok); }
.reto-resultado.mal { background: color-mix(in srgb, var(--error) 10%, var(--superficie)); border: 1px solid var(--error); color: var(--error); }
html[data-tema="oscuro"] .reto-resultado.ok { color: #86efac; }
html[data-tema="oscuro"] .reto-resultado.mal { color: #fca5a5; }

.consola { background: #0b1120; color: #e2e8f0; border-radius: var(--radio-s); padding: 12px 14px; font-family: var(--fuente-mono); font-size: 0.85rem; line-height: 1.55; min-height: 140px; max-height: 380px; overflow: auto; border: 1px solid #1e293b; }
.consola .linea { white-space: pre-wrap; word-break: break-word; padding-left: 16px; text-indent: -16px; }
.consola .linea::before { content: "› "; color: #38bdf8; }
.consola .linea-error { color: #fca5a5; }
.consola .linea-error::before { content: "✖ "; color: #f87171; }
.consola .linea-vacia { color: #64748b; font-style: italic; }
.consola .linea-vacia::before { content: ""; }
.consola .linea-tiempo { color: #64748b; border-top: 1px dashed #1e293b; margin-top: 8px; padding-top: 6px; font-size: 0.75rem; font-family: var(--fuente); }
.consola .linea-tiempo::before { content: ""; }

.lab-graficas { display: grid; gap: 12px; margin-top: 12px; }
.lab-graficas:empty { display: none; }
.lab-grafica { background: var(--superficie-2); border: 1px solid var(--borde); border-radius: var(--radio-s); padding: 10px 10px 6px; }
.lab-grafica h4 { margin: 0 0 6px; font-size: 0.85rem; color: var(--tinta-suave); text-align: center; font-weight: 600; }
.lab-grafica svg { margin: 0 auto; }
.lab-grafica table { font-size: 0.85rem; }

.chuleta { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 10px; }
.chuleta > div { background: var(--superficie-2); border: 1px solid var(--borde); border-radius: var(--radio-s); padding: 10px 13px; font-size: 0.88rem; }
.chuleta code { display: block; font-size: 0.82rem; margin-bottom: 4px; color: var(--acento); background: transparent; padding: 0; }
.chuleta span { color: var(--tinta-suave); }

.lab-progreso { display: flex; align-items: center; gap: 12px; font-size: 0.88rem; color: var(--tinta-suave); }
.lab-progreso .progreso-quiz { flex: 1; margin: 0; }

.lab-sugerencia { font-size: 0.85rem; color: var(--tinta-tenue); margin: 8px 0 0; }

@media (max-width: 640px) {
  .lab-cabecera { padding: 20px; }
  .lab-cabecera::before { display: none; }
  .editor { font-size: 0.82rem; }
}