/* =========================================================================
   IngeniatecXXI S.L. — Sistema de diseño
   HTML + CSS estáticos. Sin dependencias externas. Tipografía autohospedada.
   Paleta derivada de la familia de marca de Calcúlalo, en clave institucional.
   ========================================================================= */

/* --- Tipografía autohospedada (Inter, subconjunto latin, 2 pesos) -------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/inter-700.woff2") format("woff2");
}

/* --- Variables ----------------------------------------------------------- */
:root {
  /* Marca — navy institucional + azul de la familia Calcúlalo */
  --navy-950: #081633;
  --navy-900: #0b1e45;
  --navy-800: #12203b;
  --navy-700: #1b2e52;
  --azul-600: #2563eb;   /* enlaces / acento principal */
  --azul-700: #1d4ed8;   /* hover */
  --azul-500: #3b5bff;   /* solo brillos del hero */
  --violeta:  #7c3aed;   /* guiño de familia, muy medido */

  /* Texto */
  --tinta:       #0f172a;
  --texto:       #1e293b;
  --texto-suave: #475569;
  --texto-tenue: #64748b;

  /* Superficies y líneas */
  --fondo:       #ffffff;
  --fondo-alt:   #f7f8fd;
  --fondo-azul:  #eef1fe;
  --linea:       #e2e8f0;
  --linea-suave: #edf0f5;

  /* Espaciado (escala consistente) */
  --e1: 0.25rem;
  --e2: 0.5rem;
  --e3: 0.75rem;
  --e4: 1rem;
  --e5: 1.5rem;
  --e6: 2rem;
  --e7: 3rem;
  --e8: 4rem;
  --e9: 6rem;
  --e10: 8rem;

  /* Estructura */
  --ancho: 1100px;
  --medida: 68ch;          /* ancho de línea de lectura */
  --radio: 14px;
  --radio-sm: 10px;

  /* Sombras */
  --sombra-1: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
  --sombra-2: 0 4px 12px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.04);
  --sombra-3: 0 18px 40px -12px rgba(11, 30, 69, 0.22), 0 8px 16px -8px rgba(15, 23, 42, 0.10);

  --transicion: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset ligero -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;              /* 17px */
  line-height: 1.7;
  color: var(--texto);
  background: var(--fondo);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 768px) {
  body { font-size: 1.125rem; }      /* 18px en pantallas grandes */
}

img, svg { display: block; max-width: 100%; }

a { color: var(--azul-600); text-decoration: none; }
a:hover { color: var(--azul-700); }

::selection { background: rgba(37, 99, 235, 0.16); }

/* --- Foco visible por teclado ------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--azul-500);
  outline-offset: 2px;
  border-radius: 4px;
}

.saltar {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy-900);
  color: #fff;
  padding: var(--e3) var(--e4);
  border-radius: 0 0 var(--radio-sm) 0;
  z-index: 100;
}
.saltar:focus { left: 0; color: #fff; }

/* --- Layout -------------------------------------------------------------- */
.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.seccion { padding-block: clamp(3.5rem, 8vw, 6rem); }
.seccion + .seccion { border-top: 1px solid var(--linea-suave); }

/* --- Tipografía y jerarquía --------------------------------------------- */
h1, h2, h3 {
  color: var(--tinta);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

.titular {
  font-size: clamp(2.25rem, 5.2vw, 3.75rem);
  font-weight: 700;
  line-height: 1.06;
}

.seccion-cabecera { margin-bottom: clamp(2rem, 4vw, 3rem); }

.antetitulo {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--azul-600);
  margin-bottom: var(--e3);
}

h2.titulo-seccion {
  font-size: clamp(1.625rem, 3vw, 2.125rem);
  font-weight: 700;
  position: relative;
  padding-top: var(--e4);
}
/* línea de acento sobre los encabezados de sección */
h2.titulo-seccion::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--azul-600), var(--violeta));
}

.lead {
  font-size: clamp(1.125rem, 1.6vw, 1.3125rem);
  line-height: 1.6;
  color: var(--texto-suave);
  max-width: var(--medida);
}

p { margin: 0 0 var(--e4); max-width: var(--medida); }

/* =========================================================================
   Cabecera
   ========================================================================= */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--linea);
}
.cabecera .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--e4);
  min-height: 68px;
}
.marca {
  display: inline-flex;
  align-items: center;
  gap: var(--e3);
  color: var(--tinta);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.marca:hover { color: var(--tinta); }
.marca .logo { width: 34px; height: 34px; flex: none; }
.marca .nombre { font-size: 1.1875rem; }
.marca .sufijo { color: var(--texto-tenue); font-weight: 400; font-size: 0.8125rem; }

.nav-principal {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 2vw, 1.75rem);
}
.nav-principal a {
  color: var(--texto-suave);
  font-size: 0.9375rem;
  font-weight: 700;
  padding: var(--e2) var(--e1);
  transition: color var(--transicion);
}
.nav-principal a:hover { color: var(--azul-700); }

/* En pantallas estrechas, aligerar la cabecera para que quepa la navegación */
@media (max-width: 460px) {
  .cabecera .marca .sufijo { display: none; }
  .cabecera .marca .nombre { font-size: 1.0625rem; }
  .nav-principal { gap: var(--e4); }
  .nav-principal a { font-size: 0.875rem; }
}

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  position: relative;
  overflow: hidden;
  color: #eaf0ff;
  background:
    radial-gradient(120% 130% at 82% 8%, rgba(59, 91, 255, 0.35), transparent 55%),
    radial-gradient(90% 90% at 8% 95%, rgba(124, 58, 237, 0.20), transparent 52%),
    linear-gradient(158deg, #0b1e45 0%, #081633 58%, #0a1a38 100%);
}
.hero .contenedor {
  position: relative;
  z-index: 2;
  padding-block: clamp(4rem, 11vw, 8rem);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--e2);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a9c1ff;
  margin-bottom: var(--e5);
}
.hero-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: #6f8cff;
  border-radius: 2px;
}
.hero .titular { color: #ffffff; max-width: 16ch; }
.hero-sub {
  margin-top: var(--e5);
  font-size: clamp(1.125rem, 1.7vw, 1.375rem);
  line-height: 1.6;
  color: #c3d2f5;
  max-width: 54ch;
}
.hero-acciones {
  margin-top: var(--e7);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--e4) var(--e5);
}

/* Decoración geométrica del hero (SVG inline, aria-hidden) */
.hero-deco {
  position: absolute;
  top: 50%;
  right: -4%;
  transform: translateY(-50%);
  width: min(46vw, 560px);
  height: auto;
  color: #ffffff;
  opacity: 0.10;
  z-index: 1;
  pointer-events: none;
}

/* =========================================================================
   Botones
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--e2);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
  padding: 0.875rem 1.375rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transicion), background var(--transicion),
              border-color var(--transicion), color var(--transicion);
}
.btn .flecha { transition: transform var(--transicion); }
.btn:hover .flecha { transform: translateX(3px); }

.btn-primario {
  background: #ffffff;
  color: var(--navy-900);
}
.btn-primario:hover { color: var(--navy-900); transform: translateY(-1px); }

.btn-fantasma {
  color: #dbe6ff;
  border-color: rgba(255, 255, 255, 0.28);
}
.btn-fantasma:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-1px);
}

/* =========================================================================
   Presentación / sección de enfoque
   ========================================================================= */
.presentacion .lead-grande {
  font-size: clamp(1.3125rem, 2.4vw, 1.75rem);
  line-height: 1.5;
  font-weight: 400;
  color: var(--tinta);
  letter-spacing: -0.01em;
  max-width: 24ch;
}
.presentacion-cuerpo p { color: var(--texto-suave); }
.presentacion-cuerpo strong { color: var(--tinta); font-weight: 700; }

.dos-columnas {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 860px) {
  .dos-columnas { grid-template-columns: 0.85fr 1.15fr; }
}

/* =========================================================================
   Tarjetas de producto
   ========================================================================= */
.proyectos {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.5rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}
.proyecto {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--fondo);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--sombra-1);
  transition: transform var(--transicion), box-shadow var(--transicion),
              border-color var(--transicion);
}
.proyecto:hover,
.proyecto:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--sombra-3);
  border-color: #c9d6f5;
}
.proyecto .logo {
  width: 52px;
  height: 52px;
  border-radius: var(--radio-sm);
  margin-bottom: var(--e5);
}
.proyecto h3 {
  font-size: 1.3125rem;
  font-weight: 700;
  margin-bottom: var(--e2);
}
.proyecto .desc {
  color: var(--texto-suave);
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 var(--e5);
  flex: 1;
}
.proyecto .enlace {
  display: inline-flex;
  align-items: center;
  gap: var(--e2);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--azul-600);
}
.proyecto .enlace .flecha { transition: transform var(--transicion); }
.proyecto:hover .enlace .flecha { transform: translateX(3px); }
.proyecto .enlace .dominio { color: var(--texto-tenue); font-weight: 400; }
/* toda la tarjeta clicable con un único enlace accesible (stretched link) */
.proyecto .enlace::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

/* =========================================================================
   Contacto
   ========================================================================= */
.contacto-tarjeta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--e5);
  background: linear-gradient(160deg, var(--fondo-azul), var(--fondo-alt));
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: clamp(1.75rem, 4vw, 2.75rem);
}
.contacto-tarjeta .texto p { margin: 0; color: var(--texto-suave); }
.contacto-tarjeta .correo {
  font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--navy-900);
}
.contacto-tarjeta .correo:hover { color: var(--azul-700); }

/* =========================================================================
   Pie
   ========================================================================= */
.pie {
  background: var(--navy-900);
  color: #b9c6e6;
  padding-block: clamp(3rem, 6vw, 4.5rem) var(--e6);
  font-size: 0.9375rem;
}
.pie a { color: #cdd9f5; }
.pie a:hover { color: #ffffff; }

.pie-rejilla {
  display: grid;
  gap: clamp(2rem, 5vw, 3rem);
  grid-template-columns: 1fr;
}
@media (min-width: 620px) {
  .pie-rejilla { grid-template-columns: 1.4fr 1fr 1fr; }
}
@media (min-width: 920px) {
  .pie-rejilla { grid-template-columns: 1.8fr 1fr 1fr 1fr; }
}

.pie-marca .marca { color: #ffffff; }
.pie-marca .marca .sufijo { color: #8ea3cf; }
.pie-marca p {
  margin: var(--e4) 0 0;
  color: #8ea3cf;
  max-width: 34ch;
  font-size: 0.9375rem;
}

.pie-col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7e93c2;
  margin: 0 0 var(--e4);
  font-weight: 700;
}
.pie-col ul { list-style: none; margin: 0; padding: 0; }
.pie-col li { margin-bottom: var(--e3); }

.pie-legal {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  padding-top: var(--e5);
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--e2) var(--e4);
  align-items: center;
  justify-content: space-between;
  color: #8093ba;
  font-size: 0.875rem;
}

/* =========================================================================
   Páginas legales
   ========================================================================= */
.legal-hero {
  background: var(--fondo-alt);
  border-bottom: 1px solid var(--linea);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}
.legal-hero .antetitulo { color: var(--azul-600); }
.legal-hero h1 {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 700;
}
.legal-hero .actualizado {
  margin: var(--e4) 0 0;
  color: var(--texto-tenue);
  font-size: 0.9375rem;
}

.legal {
  padding-block: clamp(2.5rem, 6vw, 4rem);
}
.legal-cuerpo { max-width: 74ch; }
.legal-cuerpo h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: clamp(2.25rem, 4vw, 3rem) 0 var(--e4);
  padding-top: var(--e4);
  border-top: 1px solid var(--linea-suave);
}
.legal-cuerpo h2:first-of-type { border-top: 0; padding-top: 0; }
.legal-cuerpo p,
.legal-cuerpo li { color: var(--texto-suave); }
.legal-cuerpo p { max-width: none; }
.legal-cuerpo ul, .legal-cuerpo ol { padding-left: 1.35rem; margin: 0 0 var(--e4); }
.legal-cuerpo li { margin-bottom: var(--e2); }
.legal-cuerpo strong { color: var(--tinta); font-weight: 700; }

.nota-revision {
  display: flex;
  gap: var(--e3);
  background: #fff8ec;
  border: 1px solid #f4dfb8;
  border-left: 4px solid #d99a2b;
  border-radius: var(--radio-sm);
  padding: var(--e4) var(--e5);
  font-size: 0.9375rem;
  color: #7a5312;
  margin-bottom: var(--e7);
  max-width: 74ch;
}
.nota-revision strong { color: #5f3f0a; }

/* Ficha de datos oficial (en páginas legales) */
.ficha {
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra-1);
  margin: var(--e5) 0 var(--e6);
  max-width: 74ch;
}
.ficha dl { margin: 0; }
.ficha .fila {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--e4);
  padding: var(--e4) var(--e5);
  border-bottom: 1px solid var(--linea-suave);
}
.ficha .fila:nth-child(odd) { background: var(--fondo-alt); }
.ficha .fila:last-child { border-bottom: 0; }
.ficha dt { font-weight: 700; color: var(--tinta); margin: 0; }
.ficha dd { margin: 0; color: var(--texto-suave); }
@media (max-width: 560px) {
  .ficha .fila { grid-template-columns: 1fr; gap: var(--e1); }
}

/* --- Utilidades ---------------------------------------------------------- */
.vsr {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

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