/* =========================================================
   Nodo — landing
   Tokens tomados de "Guía de marca Nodo" / "Landing Nodo.dc.html"
   ========================================================= */

:root {
  /* Marca */
  --blue:        #1D5CF0;
  --blue-press:  #0B3ECF;
  --blue-light:  #5A8CF7;

  /* Tinta */
  --ink:         #0B1524;
  --ink-deep:    #050B14;
  --ink-soft:    #243044;
  --muted:       #5B6577;
  --dim:         #8A93A3;

  /* Superficies */
  --bg:          #F6F8FB;
  --surface:     #FFFFFF;

  /* Líneas */
  --line:        #E3E8F0;
  --line-soft:   #EEF1F6;
  --line-strong: #D8DEE8;

  /* Sobre fondo oscuro */
  --on-dark-body:   #B9C9E6;
  --on-dark-lede:   #8FA6C9;
  --on-dark-mono:   #8494AD;
  --on-dark-faint:  #6E7C94;
  --on-dark-line:   #2C3E5C;

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

  /* Medidas */
  --max:     1120px;
  --gutter:  clamp(20px, 4vw, 40px);
  --section: clamp(56px, 8vw, 84px);
  --nav-h:   74px;
}

/* ---------- Base ---------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }

a {
  color: var(--blue);
  text-decoration: none;
}
a:hover { color: var(--blue-press); }

/* Foco visible: el diseño no lo define, pero la página lo necesita */
:where(a, button):focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}
.cta :where(a):focus-visible,
.foot :where(a):focus-visible {
  outline-color: #fff;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 20px;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
  color: #fff;
}

/* ---------- Marca ---------- */

.mark {
  fill: none;
  flex-shrink: 0;
}
.mark--xs { width: 24px; height: 24px; }
.mark--sm { width: 26px; height: 26px; }
.mark--md { width: 28px; height: 28px; margin-top: 2px; }
.mark--xl { width: 56px; height: 56px; --mark-weight: 2.6; }

.on-dark {
  --mark-stroke: var(--blue-light);
  --mark-base: #fff;
}

/* ---------- Layout ---------- */

.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section); }

.band {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.band__inner { padding-block: var(--section); }

/* El nav sticky no debe tapar el encabezado al saltar a un ancla */
[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* ---------- Tipografía compartida ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}
.eyebrow--wide {
  letter-spacing: .16em;
  margin-bottom: 24px;
}

.h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 38px);
  letter-spacing: -.03em;
  line-height: 1.15;
  margin-bottom: 12px;
  text-wrap: balance;
}
.h2--center { text-align: center; margin-bottom: clamp(32px, 4vw, 44px); }
.h2--gap    { margin-bottom: clamp(36px, 5vw, 48px); }
.h2--tight  { line-height: 1.08; margin-bottom: 24px; text-wrap: pretty; }

.section__lede {
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: clamp(32px, 5vw, 48px);
}

/* ---------- Botones ---------- */

.btn {
  display: inline-block;
  font-family: var(--display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1;
  padding: 16px 28px;
  border: 1.5px solid transparent;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
  white-space: nowrap;
}

.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-press); color: #fff; }

.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--ink-soft); color: #fff; }

.btn--ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { color: var(--ink); border-color: var(--ink); }

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: var(--on-dark-line);
}
.btn--outline:hover { color: #fff; border-color: #fff; }

.btn--sm { font-size: 14px; padding: 12px 20px; }
.btn--lg { font-size: 17px; padding: 17px 32px; }

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-row--center { justify-content: center; }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 248, 251, .85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: var(--max);
  margin-inline: auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
}
.nav__brand:hover { color: var(--ink); }
.nav__wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -.02em;
}
.nav__menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
}
.nav__link:hover { color: var(--blue); }

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
  padding-block: clamp(56px, 7vw, 84px) clamp(48px, 6vw, 72px);
}
.hero__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(38px, 6.4vw, 60px);
  line-height: 1.02;
  letter-spacing: -.04em;
  margin-bottom: 24px;
  text-wrap: pretty;
}
.hero__lede {
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.55;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 36px;
}

/* Mockup de ventana */
.mock {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 30px 70px rgba(11, 21, 36, .14);
}
.mock__chrome {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-soft);
}
.mock__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line);
}
.mock__url {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  margin-left: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mock__canvas {
  height: 320px;
  position: relative;
}
.mock__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.mock__placeholder {
  height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  background-color: #FBFCFE;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ---------- Rejillas con filete de 1px ---------- */

.grid { display: grid; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* El truco del diseño: fondo gris + gap de 2px = líneas divisorias */
.hairline {
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
}

/* ---------- Dolor ---------- */

.cell {
  background: var(--surface);
  padding: 32px 26px;
}
.cell__title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.25;
  margin-bottom: 10px;
}
.cell__text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}

.kicker {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(18px, 2.6vw, 22px);
  letter-spacing: -.01em;
  text-align: center;
  margin-top: 40px;
  text-wrap: balance;
}
.kicker__em { color: var(--blue); }

/* ---------- Servicios ---------- */

.svc {
  background: var(--surface);
  padding: 40px;
}
.svc__num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--blue);
  margin-bottom: 16px;
}
.svc__num--dark { color: var(--blue-light); margin-bottom: 12px; }
.svc__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.svc__text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
}

.svc-lead {
  background: var(--ink);
  color: #fff;
  padding: 40px;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.svc-lead__text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-dark-body);
  max-width: 620px;
}

/* ---------- Proceso ---------- */

.steps { gap: 32px; }
.step__num {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(40px, 5vw, 52px);
  letter-spacing: -.04em;
  line-height: 1;
  color: var(--line);
}
.step__rule {
  display: block;
  height: 3px;
  background: var(--blue);
  margin: 16px 0 20px;
}
.step__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 10px;
}
.step__text {
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- Por qué ---------- */

.why {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.why__lede {
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
}
.why__list {
  display: flex;
  flex-direction: column;
}
.feat {
  background: var(--surface);
  padding: 28px 32px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.feat__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 5px;
}
.feat__text {
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- CTA ---------- */

.cta {
  background: var(--ink);
  color: #fff;
}
.cta__inner {
  padding-block: clamp(64px, 9vw, 96px);
  text-align: center;
}
.cta .mark--xl { margin: 0 auto 28px; }
.cta__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(32px, 5.6vw, 52px);
  line-height: 1.02;
  letter-spacing: -.04em;
  margin-bottom: 20px;
  text-wrap: pretty;
}
.cta__lede {
  font-size: clamp(17px, 2.2vw, 19px);
  line-height: 1.55;
  color: var(--on-dark-lede);
  max-width: 520px;
  margin: 0 auto 40px;
}

/* ---------- Footer ---------- */

.foot {
  background: var(--ink-deep);
  color: #fff;
  padding-block: 48px;
}
.foot__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.foot__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.foot__wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.02em;
}
.foot__contact,
.foot__legal {
  font-family: var(--mono);
  font-size: 12px;
}
.foot__contact { color: var(--on-dark-mono); }
.foot__contact a { color: inherit; }
.foot__contact a:hover { color: #fff; }
.foot__legal   { color: var(--on-dark-faint); }

/* =========================================================
   Responsive — el archivo de diseño es sólo desktop
   ========================================================= */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .hero__lede { max-width: none; }
  .why {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .steps { gap: 32px 40px; }
  .nav__menu { gap: 24px; }
}

@media (max-width: 760px) {
  .grid--2 { grid-template-columns: 1fr; }
  .svc { padding: 32px 26px; }
  .svc-lead { padding: 32px 26px; }
  .svc-lead__copy { flex: 1 1 100%; }
  .br-lg { display: none; }
}

@media (max-width: 640px) {
  /* Con dos anclas no vale la pena un menú hamburguesa:
     se ocultan los enlaces y se conserva el CTA. La página es un scroll único. */
  .nav__link { display: none; }
  .grid--4 { grid-template-columns: 1fr; }
  .steps { gap: 36px; }
  .mock__canvas { height: 240px; }
  .btn { width: 100%; text-align: center; white-space: normal; }
  .btn--sm { width: auto; }
  .btn-row { gap: 12px; }
  .foot__inner {
    justify-content: flex-start;
    gap: 16px;
  }
  .foot__contact { word-break: break-word; }
}

@media (max-width: 400px) {
  .btn--lg { font-size: 15px; padding: 16px 20px; }
}