/* ==========================================================================
   NIVRAIT — secciones
   ========================================================================== */

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

.hero {
  position: relative;
  padding: clamp(56px, 7vw, 88px) 0 clamp(48px, 6vw, 72px);
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(17, 17, 17, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 65% at 30% 10%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 30% 10%, #000 30%, transparent 78%);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Carrusel del hero

   Todas las diapositivas se apilan en la misma celda de una grilla, así que la
   sección mide siempre lo mismo y no da saltos al cambiar. El alto se acota
   con clamp para que no crezca de más en pantallas altas.
   -------------------------------------------------------------------------- */

.hero-carousel {
  position: relative;
  z-index: 1;
}

.hslides {
  display: grid;
  align-items: center;
  min-height: clamp(460px, 62vh, 600px);
}

.hslide {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  /* Fundido corto: con un cambio cada 4 s, uno largo deja los dos textos
     superpuestos y se lee borroso. La saliente se va antes de que entre la
     siguiente. */
  transition: opacity 180ms var(--ease),
              transform 180ms var(--ease),
              visibility 0s linear 180ms;
}

.hslide.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 260ms var(--ease) 120ms,
              transform 320ms var(--ease) 120ms,
              visibility 0s;
}

.hslide-copy { min-width: 0; }

.hslide-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  max-width: 14ch;
}

/* El esquema es la imagen de la diapositiva; se acota para que no domine. */
.hslide-viz {
  position: relative;
  padding: var(--s-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hslide-viz .solution-viz {
  width: 100%;
  max-width: 340px;
  margin: 0 auto;
}

/* Los esquemas se dibujaron para fondo oscuro: aquí van sobre crema. */
.hslide-viz .solution-viz .vz-box {
  fill: rgba(17, 17, 17, 0.02);
  stroke: rgba(17, 17, 17, 0.34);
}
.hslide-viz .solution-viz .vz-line { stroke: rgba(17, 17, 17, 0.28); }
.hslide-viz .solution-viz .vz-dim { fill: rgba(17, 17, 17, 0.14); }
.hslide-viz .solution-viz text { fill: rgba(17, 17, 17, 0.66); }

/* Controles laterales */
.hero-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line-field);
  border-radius: 50%;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--t-base) var(--ease), color var(--t-base) var(--ease);
}
.hero-nav svg {
  width: 22px;
  height: 11px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.hero-nav:hover { background: var(--accent); }
.hero-nav:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.hero-nav--prev { left: calc(-1 * var(--s-3)); }
.hero-nav--next { right: calc(-1 * var(--s-3)); }

/* Pie con el indicador de posición. Se reserva la esquina inferior derecha
   porque ahí vive el botón flotante de WhatsApp. */
.hero-foot {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-5);
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  padding-right: 76px;
  border-top: 1px solid var(--line);
}

.hero-dots { display: flex; gap: var(--s-2); }

.hdot {
  width: 30px;
  height: 3px;
  padding: 12px 0;
  background: none;
  border: 0;
  cursor: pointer;
  position: relative;
}
.hdot::after {
  content: "";
  position: absolute;
  inset: 12px 0;
  background: rgba(17, 17, 17, 0.22);
  transition: background var(--t-base) var(--ease);
}
.hdot[aria-selected="true"]::after { background: var(--ink); }
.hdot:hover::after { background: rgba(17, 17, 17, 0.5); }
.hdot:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }


@media (prefers-reduced-motion: reduce) {
  .hslide { transition: opacity 1ms linear; transform: none; }
}

/* En pantallas estrechas el esquema no cabe dentro del alto fijo sin apretar
   el texto, que es lo que de verdad tiene que leerse. */
@media (max-width: 859px) {
  .hslide-viz { display: none; }
  .hslides { min-height: clamp(420px, 60vh, 520px); }

  /* Flotando sobre el texto, las flechas tapaban las líneas del medio; aquí
     dejan de estar superpuestas y pasan a su propia fila. */
  .hero-controls {
    display: flex;
    gap: var(--s-3);
    margin-top: var(--s-5);
  }
  .hero-nav {
    position: static;
    transform: none;
    width: 44px;
    height: 44px;
  }
  .hero-foot {
    margin-top: var(--s-5);
    row-gap: var(--s-4);
  }
  .hero-dots { width: 100%; }
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--s-5);
}
.hero-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--ink);
  flex-shrink: 0;
}

.hero-title { max-width: 15ch; }

.highlight { position: relative; display: inline-block; }
.underline-doodle {
  position: absolute;
  left: 0;
  bottom: -0.1em;
  width: 100%;
  height: 0.28em;
  z-index: -1;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 760ms var(--ease) 420ms;
}
.underline-doodle.is-drawn { transform: scaleX(1); }

.hero-sub {
  margin-top: var(--s-5);
  max-width: 52ch;
  font-size: clamp(1rem, 1.7vw, 1.14rem);
  color: var(--ink-soft);
}

.hero-ctas {
  margin-top: var(--s-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}

.hero-meta {
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  padding: var(--s-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.5);
}

.hero-visual-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  margin-bottom: var(--s-4);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   01 — Problema (filas editoriales numeradas)
   -------------------------------------------------------------------------- */

.symptom-list { display: grid; }

.symptom-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: var(--s-4);
  align-items: baseline;
  padding: var(--s-5) 0;
  border-top: 1px solid var(--line);
  font-size: clamp(1rem, 1.9vw, 1.2rem);
  line-height: 1.45;
}
.symptom-list li:last-child { border-bottom: 1px solid var(--line); }

.symptom-list .idx {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.problema-close {
  margin-top: var(--s-6);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-family: var(--font-serif);
  line-height: 1.35;
  max-width: 40ch;
}

/* --------------------------------------------------------------------------
   02 — Soluciones (sistema editorial, sin tarjetas con icono)
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   Servicios en el inicio — lista compacta.
   El detalle vive en el carrusel del hero y en /servicios/; aquí basta un
   índice escaneable que enlace a cada página.
   -------------------------------------------------------------------------- */

.svc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: var(--s-6);
  border-top: 1px solid var(--line-dark);
}

.svc {
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--line-dark);
}

.svc-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.3;
  margin-bottom: 6px;
  color: var(--ink-dark);
}
.svc-name a {
  color: inherit;
  transition: color var(--t-fast) var(--ease);
}
.svc-name a:hover { color: var(--accent); }

.svc-desc {
  color: #CFCBC4;
  max-width: 52ch;
  font-size: 0.96rem;
}

.svc-all { margin-top: var(--s-6); }

.solution-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-4);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--muted-dark);
}
.solution-items li {
  position: relative;
  padding-left: 14px;
}
.solution-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  background: var(--accent);
}

/* --------------------------------------------------------------------------
   03 — Arquitectura (capas reales)
   -------------------------------------------------------------------------- */

.layers { display: grid; }

.layer {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-2);
  padding: var(--s-5) 0 var(--s-5) var(--s-5);
  border-top: 1px solid var(--line);
  position: relative;
}
.layer:last-child { border-bottom: 1px solid var(--line); }

.layer::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--t-base) var(--ease);
}
.layer:hover::before { transform: scaleY(1); }

.layer-name {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
}

.layer-desc { color: var(--ink-soft); max-width: 56ch; }

.layer-tech {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* --------------------------------------------------------------------------
   04 — Enfoque / diferenciación
   -------------------------------------------------------------------------- */

.enfoque-lead {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  line-height: 1.2;
  max-width: 22ch;
}

.principles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: var(--s-6);
}

.principle {
  padding: var(--s-5) 0;
  border-top: 1px solid var(--line);
}
.principle:last-child { border-bottom: 1px solid var(--line); }

.principle dt {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.02rem;
  margin-bottom: 6px;
}
.principle dd {
  margin: 0;
  color: var(--ink-soft);
  max-width: 54ch;
}

/* --------------------------------------------------------------------------
   05 — Proceso (riel con progreso funcional)
   -------------------------------------------------------------------------- */

.proceso-track { position: relative; }

.proceso-rail {
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
.proceso-rail::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: var(--fill, 0%);
  background: var(--accent);
  transition: height 120ms linear;
}

.proceso-list { display: grid; gap: var(--s-6); }

.proceso-list li {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding-left: 38px;
}

.proceso-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}
.proceso-list li.is-reached::before {
  background: var(--accent);
  border-color: var(--ink);
}

.proceso-list .step-id {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.proceso-list h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
}
.proceso-list p { color: var(--ink-soft); max-width: 52ch; }

.proceso-foot {
  margin-top: var(--s-7);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-4);
}

/* --------------------------------------------------------------------------
   06 — Para quién
   -------------------------------------------------------------------------- */

.sectors {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-bottom: var(--s-6);
}
.sectors li {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.88rem;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.sectors li:hover { border-color: var(--ink); background: var(--surface); }

.fit-note {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.35;
  max-width: 44ch;
}

/* --------------------------------------------------------------------------
   07 — Estado
   -------------------------------------------------------------------------- */

.estado-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 4vw, 56px);
  align-items: center;
}

/* --------------------------------------------------------------------------
   08 — Contacto
   -------------------------------------------------------------------------- */

.contacto-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 5vw, 64px);
  align-items: start;
}

.contacto-info h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: var(--s-4);
}
.contacto-info ul { display: grid; gap: var(--s-5); }
.contacto-info .label {
  display: block;
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 2px;
}
.contacto-info a {
  font-weight: 600;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
  transition: border-color var(--t-fast) var(--ease);
}
.contacto-info a:hover { border-color: var(--accent); border-bottom-width: 2px; }

/* --------------------------------------------------------------------------
   Breakpoints
   -------------------------------------------------------------------------- */

@media (min-width: 560px) {
  .layer { grid-template-columns: 190px 1fr; gap: var(--s-5); align-items: baseline; }
  .layer-name { padding-top: 2px; }
  .layer-body { display: grid; gap: 6px; }
  .proceso-list li { grid-template-columns: 62px 1fr; gap: var(--s-4); align-items: baseline; }
  .proceso-list .step-body { display: grid; gap: 4px; }
}

@media (min-width: 860px) {
  .svc-grid { grid-template-columns: 1fr 1fr; column-gap: var(--s-7); }
  .principles { grid-template-columns: 1fr 1fr; column-gap: var(--s-7); }
  .estado-inner { grid-template-columns: 1fr 1fr; }
  .contacto-inner { grid-template-columns: 1.45fr 1fr; }
}

@media (min-width: 1000px) {
  .hslide { grid-template-columns: 1.08fr 0.92fr; }
  .hero-nav--prev { left: calc(-1 * var(--s-6)); }
  .hero-nav--next { right: calc(-1 * var(--s-6)); }
  .enfoque-inner { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(40px, 5vw, 72px); align-items: start; }
  .enfoque-inner .principles { margin-top: 0; }
  .problema-inner { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px, 5vw, 72px); align-items: start; }
  .problema-inner .section-head { margin-bottom: 0; }
}

/* ===================================================== PREGUNTAS FRECUENTES */
.faq {
  max-width: 820px;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: baseline;
  gap: var(--s-4);
  padding: var(--s-5) 0;
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.4;
  cursor: pointer;
  list-style: none;
  transition: color var(--t-fast) ease;
}

.faq-item summary::-webkit-details-marker { display: none; }

/* Indicador +/− dibujado con texto, para no cargar un icono extra. */
.faq-item summary::before {
  content: "+";
  flex: none;
  width: 1ch;
  font-family: var(--font-mono, monospace);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform var(--t-base) ease;
}

.faq-item[open] summary::before {
  content: "−";
}

.faq-item summary:hover { color: var(--muted); }

.faq-item summary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.faq-item > p {
  margin: 0 0 var(--s-5);
  padding-left: calc(1ch + var(--s-4));
  max-width: 68ch;
  color: var(--muted);
  line-height: 1.7;
}

/* ===================================================== PÁGINAS DE SERVICIO */
.servicio { max-width: 820px; }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-2);
  margin-bottom: var(--s-6);
  font-family: var(--font-mono, monospace);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.crumbs [aria-current] { color: var(--ink); }

.servicio h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  line-height: 1.08;
  margin: var(--s-3) 0 var(--s-5);
}

.servicio > .lead {
  font-size: 1.12rem;
  line-height: 1.65;
  max-width: 60ch;
  margin-bottom: var(--s-7);
}

.servicio h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  line-height: 1.2;
  margin: var(--s-8) 0 var(--s-4);
}

.servicio p {
  margin: 0 0 var(--s-4);
  max-width: 68ch;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* Solo los enlaces dentro de prosa se subrayan: los chips y las migas de pan
   tienen su propio tratamiento. */
.servicio p a:not(.btn),
.servicio dd a:not(.btn) {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

.servicio .symptom-list,
.servicio .principles { margin-bottom: var(--s-6); }

.servicio .faq { margin-top: var(--s-5); }

/* Bloque de cierre con llamada a la acción */
.servicio-cta {
  margin-top: var(--s-9);
  padding: var(--s-7);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
}
.servicio-cta h2 { margin-top: 0; }
.servicio-cta p { margin-bottom: var(--s-5); }

/* Enlaces a los demás servicios */
.servicio-rel { margin-top: var(--s-8); }
.servicio-rel .sectors { margin-top: var(--s-4); }
.servicio-rel .sectors a { text-decoration: none; }
.servicio-rel .sectors li:hover { border-color: var(--line-strong); }

/* Índice de servicios */
.servicios-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: var(--s-6);
  border-top: 1px solid var(--line);
}

.servicio-card {
  padding: var(--s-6) 0;
  border-bottom: 1px solid var(--line);
}
.servicio-card .solution-id {
  display: block;
  margin-bottom: var(--s-2);
}
.servicio-card h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 0 0 var(--s-3);
}
.servicio-card h2 a {
  text-decoration: none;
  color: inherit;
  transition: color var(--t-fast) ease;
}
.servicio-card h2 a:hover { color: var(--muted); }
.servicio-card p {
  margin: 0 0 var(--s-4);
  max-width: 64ch;
  color: var(--muted);
  line-height: 1.7;
}

@media (min-width: 800px) {
  .servicios-index { grid-template-columns: 1fr 1fr; column-gap: var(--s-7); }
}

/* ===================================================== PÁGINAS LEGALES */
.legal { max-width: 760px; }

.legal h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.1;
  margin: 14px 0 20px;
}
.legal h2 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 38px 0 10px;
}
.legal p { margin: 0 0 14px; color: var(--muted); line-height: 1.7; }
.legal .lead { color: var(--ink); }
.legal ul { margin: 0 0 14px 18px; color: var(--muted); line-height: 1.7; }
.legal li { margin-bottom: 6px; }
.legal a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

.legal-meta {
  font-family: var(--font-mono, monospace);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.legal-back { margin-top: 46px; font-weight: 600; }