/* ==========================================================================
   Frontinos — sistema visual
   Identidad: azul andino + la marca crema del oso frontino ("mancha en la frente")
   Sin dependencias, sin cookies, sin analítica.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Tinta y superficies */
  --ink:        #04121F;
  --navy:       #08263F;
  --navy-2:     #0B3253;
  --paper:      #F7FAFD;
  --white:      #FFFFFF;

  /* Azul Frontinos (elegido, no el índigo por defecto) */
  --blue:       #0F63C4;
  --blue-deep:  #0A4A96;
  --blue-hi:    #4E97E6;
  --blue-tint:  #E8F1FB;

  /* Crema del oso — acento secundario, uso escaso */
  --cream:      #EAD2A2;
  --cream-soft: #F3E4C4;

  /* Texto */
  --text:       #0E2130;
  --muted:      #54687D;
  --muted-dark: #A8BED4;

  /* Líneas */
  --line:       #DCE6F0;
  --line-dark:  rgba(255, 255, 255, 0.14);

  /* Tipografía */
  --display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --body:    "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;

  /* Métrica */
  --wrap: 1180px;
  --r:    14px;
  --shadow-sm: 0 1px 2px rgba(6, 24, 40, 0.06), 0 8px 24px -12px rgba(6, 24, 40, 0.18);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-deep); }

:focus-visible {
  outline: 3px solid var(--blue-hi);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: var(--cream-soft); color: var(--ink); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--cream); color: var(--ink);
  padding: .75rem 1rem; z-index: 100; font-family: var(--mono); font-size: .8rem;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- Layout ---------- */
.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.section { padding: clamp(3.5rem, 9vw, 7rem) 0; }
.section--paper { background: var(--paper); border-top: 1px solid var(--line); }
.section--white { background: var(--white); border-top: 1px solid var(--line); }
.section--dark  { background: var(--ink); color: var(--white); }

/* ---------- Tipografía ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.05; margin: 0; letter-spacing: -0.02em; }

h1 { font-size: clamp(2.3rem, 6.2vw, 4.35rem); }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.85rem); }
h3 { font-size: 1.15rem; line-height: 1.3; letter-spacing: -0.01em; }

.lede { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: var(--muted); max-width: 46ch; }
.section--dark .lede { color: var(--muted-dark); }

.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 1.1rem;
  display: flex; align-items: center; gap: .7rem;
}
.eyebrow::after { content: ""; height: 1px; flex: 1; background: var(--line); }
.section--dark .eyebrow { color: var(--cream); }
.section--dark .eyebrow::after { background: var(--line-dark); }

.num { font-family: var(--mono); font-size: .78rem; color: var(--blue-hi); }

/* ---------- Cabecera ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(4, 18, 31, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-dark);
}
.top__in {
  display: flex; align-items: center; gap: 1.25rem;
  min-height: 68px;
}
.brand {
  display: inline-flex; align-items: center; gap: .65rem;
  color: var(--white); text-decoration: none;
  font-family: var(--display); font-weight: 700;
  font-size: 1.12rem; letter-spacing: -0.01em;
}
.brand:hover { color: var(--white); }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand small {
  display: block; font-family: var(--mono); font-weight: 400;
  font-size: .58rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted-dark); margin-top: 2px;
}

.nav { margin-left: auto; display: flex; align-items: center; gap: 1.4rem; }
.nav a {
  color: var(--muted-dark); text-decoration: none;
  font-size: .88rem; font-weight: 500;
  border-bottom: 1px solid transparent; padding-bottom: 2px;
}
.nav a:hover, .nav a:focus-visible { color: var(--white); border-bottom-color: var(--cream); }

.lang {
  display: inline-flex; margin-left: .4rem;
  border: 1px solid var(--line-dark); border-radius: 999px; overflow: hidden;
}
.lang button {
  appearance: none; border: 0; cursor: pointer;
  background: transparent; color: var(--muted-dark);
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  padding: .4rem .7rem;
  min-height: 30px;
}
.lang button[aria-pressed="true"] { background: var(--cream); color: var(--ink); }
.lang button:hover:not([aria-pressed="true"]) { color: var(--white); }

.nav-toggle { display: none; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  min-height: 46px; padding: .75rem 1.3rem;
  border-radius: 999px; border: 1px solid transparent;
  font-family: var(--body); font-weight: 600; font-size: .93rem;
  text-decoration: none; cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn--primary { background: var(--blue); color: var(--white); }
.btn--primary:hover { background: var(--blue-deep); color: var(--white); transform: translateY(-1px); }
.btn--ghost { border-color: var(--line-dark); color: var(--white); }
.btn--ghost:hover { border-color: var(--cream); color: var(--cream); }
.btn--dark { background: var(--ink); color: var(--white); }
.btn--dark:hover { background: var(--blue-deep); color: var(--white); }

.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--ink); color: var(--white);
  padding: clamp(3.5rem, 10vw, 7rem) 0 clamp(3rem, 8vw, 6rem);
}
.hero__topo {
  position: absolute; inset: -10% -5% auto -5%;
  height: 130%; width: 110%;
  opacity: .16; pointer-events: none;
  color: var(--blue-hi);
}
.hero__grid {
  position: relative;
  display: grid; gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
}
.hero .lede { color: var(--muted-dark); max-width: 42ch; }
.hero__meta {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted-dark);
  display: flex; flex-wrap: wrap; gap: .5rem 1.1rem;
  margin-top: 2.6rem; padding-top: 1.1rem;
  border-top: 1px solid var(--line-dark);
}

/* Marca del oso */
.mark { justify-self: end; text-align: center; }
.mark svg {
  width: clamp(170px, 26vw, 268px); height: auto;
  margin-inline: auto;
  filter: drop-shadow(0 18px 40px rgba(15, 99, 196, 0.28));
}
.mark figcaption {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted-dark);
  margin-top: 1.1rem;
}

/* ---------- Origen ---------- */
.origin {
  display: grid; gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: start;
}
.prose p { margin: 0 0 1.1rem; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); }

.names { margin-top: 2rem; }
.names__label {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 .6rem;
}
.names ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: .45rem;
}
.names li {
  font-family: var(--mono); font-size: .78rem;
  border: 1px solid var(--line); border-radius: 999px;
  padding: .22rem .7rem; color: var(--muted); background: var(--white);
}

/* Ficha (dato real, no relleno) */
.facts {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--shadow-sm);
  padding: 1.6rem 1.7rem; margin: 0;
}
.facts__title {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--blue); margin: 0 0 1.1rem;
}
.facts dl { margin: 0; display: grid; gap: 0; }
.facts .row {
  display: grid; grid-template-columns: 42% 1fr; gap: 1rem;
  padding: .68rem 0; border-top: 1px solid var(--line);
}
.facts .row:first-child { border-top: 0; }
.facts dt {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
}
.facts dd { margin: 0; font-size: .93rem; }
.facts dd em { color: var(--muted); font-style: normal; }
.tag-vuln { color: var(--blue-deep); font-weight: 600; }

/* Variante de la ficha sobre fondo oscuro (sección de la aplicación) */
.facts--dark {
  background: transparent;
  border-color: var(--line-dark);
  box-shadow: none;
}
.facts--dark .facts__title { color: var(--cream); }
.facts--dark .row { border-top-color: var(--line-dark); }
.facts--dark dt { color: var(--muted-dark); }
.facts--dark dd { color: var(--white); }
.facts--dark dd em { color: var(--muted-dark); }

/* Texto claro dentro de secciones oscuras */
.section--dark .prose p { color: var(--muted-dark); }
.section--dark .prose strong { color: var(--white); }

/* ---------- Lista numerada (en lugar de rejilla de tarjetas) ---------- */
.steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.steps li {
  display: grid; grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.5rem; padding: 1.7rem 0; border-bottom: 1px solid var(--line);
}
.steps h3 { margin-bottom: .35rem; }
.steps p { margin: 0; color: var(--muted); max-width: 62ch; }
.section--white .steps { border-top-color: var(--line); }

/* ---------- Marcas ---------- */
.brands-grid {
  display: grid; gap: clamp(2rem, 5vw, 3.5rem);
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
}
.slot {
  border: 1px dashed var(--line); border-radius: var(--r);
  padding: 1.5rem 1.6rem; background: var(--white);
}
.slot + .slot { margin-top: .9rem; }
.slot__num { font-family: var(--mono); font-size: .7rem; color: var(--blue); letter-spacing: .14em; }
.slot__label { font-family: var(--display); font-weight: 700; font-size: 1.02rem; margin: .35rem 0 .25rem; }
.slot__note { margin: 0; color: var(--muted); font-size: .89rem; }
.pending {
  display: inline-block; font-family: var(--mono); font-size: .66rem;
  letter-spacing: .12em; text-transform: uppercase;
  background: var(--cream-soft); color: #6B5320;
  border-radius: 999px; padding: .15rem .55rem; margin-left: .4rem;
}

/* ---------- Contacto ---------- */
.contact { text-align: left; }
.contact__mail {
  display: inline-block; margin-top: 1.5rem;
  font-family: var(--display); font-weight: 700;
  font-size: clamp(1.35rem, 4.4vw, 2.6rem);
  color: var(--cream); text-decoration: none;
  border-bottom: 2px solid transparent;
  word-break: break-word;
}
.contact__mail:hover { color: var(--white); border-bottom-color: var(--cream); }
.contact__note { margin-top: 1.8rem; color: var(--muted-dark); font-size: .92rem; max-width: 48ch; }

/* ---------- Documentos legales ---------- */
.doc { max-width: 74ch; }
.doc__meta {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 2rem;
}
.doc h2 {
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  margin: 2.6rem 0 .85rem; padding-top: 1.4rem; border-top: 1px solid var(--line);
}
.doc h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.doc h3 { font-family: var(--body); font-weight: 600; font-size: 1.02rem; margin: 1.6rem 0 .5rem; }
.doc p, .doc li { color: var(--muted); }
.doc p { margin: 0 0 1rem; }
.doc ul { padding-left: 1.15rem; margin: 0 0 1rem; }
.doc li { margin-bottom: .45rem; }
.doc strong { color: var(--text); }
.callout {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r); padding: 1.3rem 1.5rem; margin: 1.5rem 0;
}
.callout p:last-child { margin-bottom: 0; }
.doc__back { margin-top: 3rem; font-family: var(--mono); font-size: .78rem; }

/* ---------- Pie ---------- */
.foot { background: var(--navy); color: var(--muted-dark); padding: 3rem 0 2.2rem; }
.foot__grid {
  display: grid; gap: 1.5rem 2.5rem;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  align-items: start;
}
.foot .brand { margin-bottom: 1rem; }
.foot p { margin: 0; font-size: .9rem; max-width: 44ch; }
.foot__links { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.foot__links a { color: var(--muted-dark); text-decoration: none; font-size: .88rem; }
.foot__links a:hover { color: var(--cream); }
.foot__legal {
  margin-top: 2.4rem; padding-top: 1.4rem; border-top: 1px solid var(--line-dark);
  font-family: var(--mono); font-size: .7rem; letter-spacing: .06em;
  display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between;
}

/* ---------- Animación de entrada ----------
   Los elementos son VISIBLES por defecto. Solo se ocultan si el JS confirma
   que hay IntersectionObserver y que el usuario no pidió menos movimiento.
   Si el JS falla, el contenido se ve igual. */
.reveal.is-armed { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-armed.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-armed { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__grid, .origin, .brands-grid, .foot__grid { grid-template-columns: 1fr; }
  .mark { justify-self: start; }
  .mark svg { width: clamp(140px, 40vw, 200px); }
  .facts .row { grid-template-columns: 1fr; gap: .15rem; }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex; align-items: center; gap: .5rem;
    margin-left: auto; min-height: 44px;
    background: transparent; border: 1px solid var(--line-dark); border-radius: 999px;
    color: var(--white); font-family: var(--mono); font-size: .72rem;
    letter-spacing: .1em; text-transform: uppercase; padding: .4rem .9rem; cursor: pointer;
  }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--ink); border-bottom: 1px solid var(--line-dark);
    flex-direction: column; align-items: flex-start; gap: 0;
    padding: .5rem 1.25rem 1rem; margin: 0;
  }
  .nav.is-open { display: flex; }
  .nav a { width: 100%; padding: .8rem 0; border-bottom: 1px solid var(--line-dark); min-height: 44px; }
  .lang { margin: .8rem 0 0; }
  .steps li { grid-template-columns: 3rem minmax(0, 1fr); gap: 1rem; }
  .top__in { position: relative; }
}

@media print {
  .top, .foot__links, .cta-row { display: none; }
  body { background: #fff; }
}