/* =========================================================================
   Impulse AI — Hoja de estilos del sitio
   Depende de tokens.css. Nada de sombras, gradientes, blur ni esquinas
   redondeadas: la jerarquia se construye con superficie, borde y peso.
   ========================================================================= */

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

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

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: inherit; text-decoration: none; }

button, input, textarea, select { font: inherit; color: inherit; }

/* Foco: anillo naranja de 2px. Nunca se elimina sin reemplazo. */
:where(a, button, input, textarea, select, summary, [tabindex]):focus-visible {
  outline: var(--border-width-strong) solid var(--focus-ring);
  outline-offset: 2px;
}

::selection { background: var(--brand-500); color: var(--white); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink-900);
  color: var(--white);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.skip-link:focus { left: 0; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ------------------------------------------------------------ Tipografia */
.t-display,
.t-h1,
.t-h2,
.t-h3 {
  font-weight: var(--weight-semibold);
  text-wrap: balance;
}

.t-display {
  font-size: clamp(40px, 6.4vw, var(--text-display));
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
}

.t-h1 {
  font-size: clamp(32px, 4.6vw, var(--text-h1));
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
}

.t-h2 {
  font-size: clamp(26px, 3.4vw, var(--text-h2));
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
}

.t-h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
}

.t-lead {
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  color: var(--text-secondary);
  max-width: 48ch;
  text-wrap: pretty;
}

.t-body { max-width: var(--measure-text); text-wrap: pretty; }

.t-small { font-size: var(--text-small); color: var(--text-secondary); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-secondary);
}
.mono--primary { color: var(--text-primary); }
.mono--accent  { color: var(--text-accent); }
.mono--inverse { color: var(--text-inverse); }

.accent { color: var(--text-accent); }

/* ---------------------------------------------------------------- Layout */
.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter-web);
}

.section {
  padding-block: clamp(56px, 8vw, var(--space-9));
  border-bottom: var(--border-width) solid var(--border-subtle);
}
.section--tight { padding-block: clamp(40px, 5vw, var(--space-8)); }
.section--card { background: var(--surface-card); }
.section--sunken { background: var(--surface-sunken); }

.stack { display: flex; flex-direction: column; }
.stack-2 { gap: var(--space-2); }
.stack-3 { gap: var(--space-3); }
.stack-4 { gap: var(--space-4); }
.stack-5 { gap: var(--space-5); }
.stack-6 { gap: var(--space-6); }
.stack-7 { gap: var(--space-7); }
.stack-8 { gap: var(--space-8); }

.row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
  max-width: 56ch;
}

.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.rule { border: 0; border-top: var(--border-width) solid var(--border-subtle); margin: 0; }

/* ---------------------------------------------------------------- Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface-card);
  border-bottom: var(--border-width) solid var(--border-subtle);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: 76px;
  padding-block: var(--space-3);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
}
.logo__word {
  font-size: 18px;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  line-height: 1;
  color: var(--text-primary);
}
.logo--inverse .logo__word { color: var(--white); }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav__link {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-secondary);
  padding-block: var(--space-2);
  border-bottom: var(--border-width-strong) solid transparent;
  transition: color var(--duration-fast) var(--ease-standard);
}
.nav__link:hover { color: var(--text-primary); }
.nav__link[aria-current="page"] {
  color: var(--text-primary);
  border-bottom-color: var(--brand-500);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  border: var(--border-width) solid var(--border-subtle);
  border-radius: var(--radius-none);
  padding: 10px 14px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.nav-panel { display: contents; }

/* El CTA duplicado solo existe dentro del panel movil */
.nav-panel .nav-cta-mobile { display: none; }

/* ---------------------------------------------------------------- Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: var(--weight-medium);
  line-height: 1.1;
  padding: 14px 26px;
  font-size: var(--text-body);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-none);
  cursor: pointer;
  text-align: center;
  transition:
    background var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}
.btn--sm { padding: 10px 18px; font-size: var(--text-small); }
.btn--lg { padding: 20px 36px; font-size: var(--text-body-lg); }

.btn--primary {
  background: var(--action-primary-bg);
  color: var(--action-primary-text);
}
.btn--primary:hover { background: var(--action-primary-bg-hover); }

.btn--secondary {
  background: transparent;
  color: var(--action-secondary-text);
  border-color: var(--action-secondary-border);
}
.btn--secondary:hover { background: var(--surface-sunken); }

.btn--ghost { background: transparent; color: var(--text-primary); }
.btn--ghost:hover { color: var(--brand-500); }

.btn--inverse { background: var(--white); color: var(--ink-900); }
.btn--inverse:hover { background: var(--neutral-200); }

.btn[disabled] { opacity: 0.4; cursor: not-allowed; }

/* ---------------------------------------------------------------- Marca */
.mark { display: block; overflow: visible; flex: none; }

/* Reproduccion unica: el gesto corre una vez al cargar */
.mark--animated .mark__trail-1 { animation: impulse-trail var(--duration-launch) var(--ease-launch) 100ms 1 both; }
.mark--animated .mark__trail-2 { animation: impulse-trail var(--duration-launch) var(--ease-launch) 200ms 1 both; }
.mark--animated .mark__dot     { animation: impulse-launch 2.6s var(--ease-launch) 0ms 1 both; }

/* Bucle: mismo gesto siempre hacia adelante, con una pausa entre ciclos */
.mark--loop .mark__trail-1 {
  --trail-opacity: 0.24;
  animation: impulse-trail-loop 3s var(--ease-launch) 0ms infinite both;
}
.mark--loop .mark__trail-2 {
  --trail-opacity: 0.5;
  animation: impulse-trail-loop 3s var(--ease-launch) 90ms infinite both;
}
.mark--loop .mark__dot {
  animation: impulse-launch-loop 3s var(--ease-launch) 0ms infinite both;
}

/* ---------------------------------------------------------------- Hero */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  border-bottom: var(--border-width) solid var(--border-subtle);
}

.hero__copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  justify-content: center;
  padding: clamp(56px, 8vw, var(--space-9)) var(--space-6);
  max-width: calc(var(--content-max) * 0.58 + var(--gutter-web));
  margin-left: auto;
  width: 100%;
}

.hero__title { max-width: 15ch; }

.hero__panel {
  display: grid;
  place-items: center;
  min-height: 460px;
  padding: var(--space-6);
}
.hero__panel--brand { background: var(--surface-brand); }
.hero__panel--ink { background: var(--surface-inverse); }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-7);
  margin-top: var(--space-3);
}

/* ---------------------------------------------------------------- Stat */
.stat { display: flex; flex-direction: column; gap: var(--space-2); }
.stat__value {
  font-size: clamp(32px, 4vw, var(--text-h1));
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  line-height: 1;
  color: var(--text-primary);
}
.stat__value--accent { color: var(--text-accent); }
.stat__label {
  font-size: var(--text-small);
  color: var(--text-secondary);
  line-height: var(--leading-body);
  max-width: 22ch;
}

/* ---------------------------------------------------------------- Card */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--surface-card);
  border: var(--border-width) solid var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-none);
}
.card--sunken { background: var(--surface-sunken); border-color: transparent; }
.card--inverse { background: var(--surface-inverse); border-color: transparent; color: var(--text-inverse); }
.card--brand { background: var(--surface-brand); border-color: transparent; color: var(--text-inverse); }
.card--inverse .stat__label,
.card--inverse .card__text { color: #B5B5B5; }
.card--brand .stat__label,
.card--brand .card__text { color: #FFE9E1; }

.card__text { color: var(--text-secondary); font-size: var(--text-body); }

/* Card enlazada: sin sombra, el borde pasa a tinta */
a.card { transition: border-color var(--duration-fast) var(--ease-standard); }
a.card:hover { border-color: var(--border-strong); }
a.card:hover .card__more { color: var(--brand-500); }
.card__more {
  margin-top: auto;
  padding-top: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-primary);
  transition: color var(--duration-fast) var(--ease-standard);
}

/* ---------------------------------------------------------------- Badge */
.badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--radius-none);
  background: var(--brand-100);
  color: var(--brand-600);
}
.badge--neutral { background: var(--surface-sunken); color: var(--text-secondary); }
.badge--solid { background: var(--brand-500); color: var(--white); }
.badge--inverse { background: var(--ink-700); color: var(--white); }

/* ------------------------------------------------------- Listas y pasos */
.ruled-list > li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: var(--space-5);
  padding-block: var(--space-5);
  border-top: var(--border-width) solid var(--border-subtle);
  align-items: start;
}
.ruled-list > li:last-child { border-bottom: var(--border-width) solid var(--border-subtle); }
.ruled-list__key {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-muted);
  padding-top: 6px;
}
.ruled-list__body { display: flex; flex-direction: column; gap: var(--space-2); }

.check-list > li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-3);
  align-items: start;
}
.check-list__tick {
  width: 10px; height: 10px;
  margin-top: 8px;
  background: var(--brand-500);
}

/* ---------------------------------------------------------------- Split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.split__side {
  padding: clamp(48px, 6vw, var(--space-9)) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  justify-content: center;
}
.split__side + .split__side { border-left: var(--border-width) solid var(--border-subtle); }

/* ------------------------------------------------------------ Formulario */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-secondary);
}
.field__control {
  width: 100%;
  font-size: var(--text-body);
  color: var(--text-primary);
  background: var(--surface-card);
  padding: 14px 16px;
  border: var(--border-width) solid var(--border-subtle);
  border-radius: var(--radius-none);
  transition: border-color var(--duration-fast) var(--ease-standard);
}
.field__control:hover { border-color: var(--gray-300); }
.field__control:focus { border-color: var(--border-strong); }
.field__control::placeholder { color: var(--text-muted); }
textarea.field__control { min-height: 132px; resize: vertical; }

select.field__control {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--ink-900) 50%),
    linear-gradient(135deg, var(--ink-900) 50%, transparent 50%);
  background-position: right 20px center, right 15px center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 44px;
}

.field__hint { font-size: var(--text-small); color: var(--text-secondary); }
.field--error .field__control { border-color: var(--brand-500); }
.field__error { font-size: var(--text-small); color: var(--brand-500); }

.form-note {
  border: var(--border-width) solid var(--border-subtle);
  border-left: var(--border-width-strong) solid var(--brand-500);
  padding: var(--space-4) var(--space-5);
  background: var(--surface-card);
}

/* ---------------------------------------------------------------- Footer */
.site-footer {
  background: var(--surface-inverse);
  color: var(--text-inverse);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-7);
  padding-block: var(--space-8);
}
.site-footer__col { display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__title {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: var(--space-1);
}
.site-footer__link {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: #B5B5B5;
  transition: color var(--duration-fast) var(--ease-standard);
}
.site-footer__link:hover { color: var(--brand-500); }
.site-footer__blurb { color: #B5B5B5; font-size: var(--text-small); max-width: 34ch; }
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-top: var(--border-width) solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  color: var(--gray-500);
}

/* --------------------------------------------------------------- Bloques */
.panel-ink {
  background: var(--surface-inverse);
  color: var(--text-inverse);
  padding: clamp(48px, 6vw, var(--space-8));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.panel-ink .t-lead { color: #B5B5B5; }

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* --------------------------------------------------------- Captura de UI
   Panel del hero de producto: la captura real de la interfaz, apoyada
   sobre tinta. Borde de 1px, esquina recta, sin sombra.
   ---------------------------------------------------------------------- */
.hero__panel--stage {
  background: var(--surface-inverse);
  padding: clamp(24px, 4vw, var(--space-7));
  align-content: center;
}

.shot {
  display: block;
  width: 100%;
  /* Tope al ancho nativo de las capturas: escalar hacia arriba las
     desenfoca. Subir a 560px cuando existan versiones a 2x. */
  max-width: 520px;
  height: auto;
  border: var(--border-width) solid var(--ink-700);
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-none);
  background: var(--white);
}

/* ------------------------------------------------------------ Responsive */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero__copy { max-width: var(--content-max); margin-inline: auto; }
  .hero__panel { min-height: 320px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split__side + .split__side {
    border-left: 0;
    border-top: var(--border-width) solid var(--border-subtle);
  }

  .nav-toggle { display: inline-flex; }
  .nav-panel {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--surface-card);
    border-top: var(--border-width) solid var(--border-subtle);
    border-bottom: var(--border-width) solid var(--border-subtle);
    padding: 0 var(--gutter-web) var(--space-6);
  }
  .nav-panel[data-open="true"] { display: block; }
  .nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav__link {
    padding-block: var(--space-4);
    border-bottom: var(--border-width) solid var(--border-subtle);
  }
  .nav-panel .nav-cta-mobile { display: inline-flex; width: 100%; margin-top: var(--space-5); }
  .site-header__inner > .btn { display: none; }
}

@media (max-width: 620px) {
  :root { --gutter-web: var(--space-5); }
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; gap: var(--space-6); }
  .hero__stats { gap: var(--space-5) var(--space-6); }
  .ruled-list > li { grid-template-columns: 1fr; gap: var(--space-2); }
  .cta { flex-direction: column; align-items: flex-start; }
  .cta .btn { width: 100%; }
}

/* --------------------------------------------------- Movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header, .nav-toggle, .btn { display: none !important; }
  body { background: #fff; }
}