/* ==========================================================================
   Norma Escobar — estilos de la landing
   Dirección visual: Brandbook aprobado — "Claridad que cuenta"
   Tipografías: Montserrat (títulos) + Lato (lectura/cuerpo/UI)
   Paleta: Petrol / Graphite / Sand / Ivory / White
   ========================================================================== */

:root {
  --color-petrol: #173F46;
  --color-petrol-dark: #0F2B30;
  --color-graphite: #292D2E;
  --color-graphite-dark: #1B1D1E;
  --color-sand: #C7B7A3;
  --color-sand-line: rgba(199, 183, 163, .55);
  --color-ivory: #F5F1E9;
  --color-ivory-soft: #ECE4D4;
  --color-white: #FFFFFF;
  --color-texto-muted: #5B5F5E;
  --color-borde: #E4DCC9;
  --color-error: #B3261E;

  --font-titulo: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-cuerpo: "Lato", -apple-system, BlinkMacSystemFont, sans-serif;

  --container-width: 1160px;
  --container-wide: 1320px;
  --container-narrow: 720px;

  --radius: 4px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 96px;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--sticky-header-offset, 72px); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* El atributo [hidden] debe ganar siempre, incluso sobre reglas de
   componente (ej. .btn) que declaran su propio "display". */
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--color-ivory);
  color: var(--color-graphite);
  font-family: var(--font-cuerpo);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 var(--space-2); }
a { color: inherit; }
button { font-family: inherit; }

h1, h2, h3 {
  font-family: var(--font-titulo);
  font-weight: 600;
  color: var(--color-petrol);
  margin: 0 0 var(--space-2);
  line-height: 1.18;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-petrol);
  color: var(--color-ivory);
  padding: var(--space-1) var(--space-2);
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

:focus-visible {
  outline: 3px solid var(--color-petrol);
  outline-offset: 2px;
}
.section--dark :focus-visible {
  outline-color: var(--color-ivory);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-2);
}
.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: var(--container-wide); }

.section {
  padding: var(--space-5) 0;
}
.section--muted { background: var(--color-ivory-soft); }
.section--dark {
  background: var(--color-petrol);
  color: var(--color-ivory);
}
.section-title {
  font-size: 1.75rem;
}
.section-title--inverted { color: var(--color-ivory); }
.section-lead {
  font-size: 1.05rem;
  color: var(--color-graphite);
  max-width: 620px;
}
.section-lead--inverted { color: var(--color-ivory); opacity: .92; }
.section-closing {
  font-family: var(--font-cuerpo);
  font-style: italic;
  color: var(--color-petrol);
  font-size: 1.1rem;
  margin: var(--space-3) 0;
}
.eyebrow {
  font-family: var(--font-cuerpo);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-texto-muted);
  margin-bottom: var(--space-1);
}
/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 241, 233, .95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-borde);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}
.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}
/* Logo real aprobado (assets/logo.png) — no se recorta ni se altera,
   solo se limita su altura visible; el ancho escala proporcionalmente. */
.logo-img {
  height: 40px;
  width: auto;
}
.logo-img--footer { height: 48px; }

/* Logo horizontal aprobado (assets/logo-horizontal.png) — usado solo en
   el header de index.html, con mayor presencia que el lockup pequeño
   anterior. No se recorta ni se altera, solo se limita su altura. */
.logo-img--header {
  height: 44px;
  width: auto;
}

.site-nav {
  display: none;
  gap: var(--space-3);
  margin-left: auto;
  font-size: .95rem;
}
.site-nav a { text-decoration: none; color: var(--color-graphite); }
.site-nav a:hover { color: var(--color-petrol); }

.nav-toggle {
  flex-shrink: 0;
  margin-left: auto;
  background: none;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-petrol);
  position: relative;
}
.nav-toggle-bar::before { content: ""; position: absolute; top: -6px; width: 22px; height: 2px; background: var(--color-petrol); }
.nav-toggle-bar::after { content: ""; position: absolute; top: 6px; width: 22px; height: 2px; background: var(--color-petrol); }

.btn--header { margin-left: var(--space-2); flex-shrink: 0; white-space: nowrap; }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-cuerpo);
  font-weight: 700;
  font-size: .95rem;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  padding: 12px 22px;
  cursor: pointer;
  min-height: 44px;
  line-height: 1.2;
}
.btn--primary {
  background: var(--color-petrol);
  color: var(--color-ivory);
}
.btn--primary:hover { background: var(--color-petrol-dark); }
.btn--secondary {
  background: var(--color-graphite);
  color: var(--color-ivory);
}
.btn--secondary:hover { background: var(--color-graphite-dark); }
.btn--ghost {
  background: transparent;
  color: var(--color-petrol);
  border: 1px solid var(--color-borde);
}
.btn--large { font-size: 1.05rem; padding: 14px 28px; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---------- Hero (V1.1 — composición editorial, foto a sangre) ---------- */
.hero {
  padding: 0;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
}
.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  justify-content: center;
  padding: var(--space-4) var(--space-2);
}
.hero-eyebrow {
  font-family: var(--font-cuerpo);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-texto-muted);
}
.hero-title {
  font-size: 2.1rem;
  line-height: 1.1;
  max-width: 18ch;
  margin-bottom: 0;
}
.hero-text-line {
  font-size: 1.05rem;
  color: var(--color-graphite);
  max-width: 44ch;
  margin: 0;
}
.hero-cta-row { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-1); }
.hero-cta-row .btn { display: inline-flex; align-items: center; gap: 8px; }

.hero-visual {
  position: relative;
  background: var(--color-ivory-soft);
  aspect-ratio: 3 / 2;
}
.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  display: block;
}

/* ---------- Iconografía de servicios (Brandbook, sin modificar) ---------- */
.services-icons {
  /* 505px = ancho nativo del PNG recortado; no agrandar más allá de eso
     para no perder definición (evitar upscaling). */
  max-width: 505px;
  width: 100%;
  height: auto;
  margin: var(--space-3) 0;
  border-radius: 6px;
}

/* ---------- Tarjetas (uso reservado a bloques con título + descripción) ---------- */
.card-grid {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-3) 0;
}
.card-grid--4 { grid-template-columns: repeat(1, 1fr); }

.card {
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-borde);
}
.card-title { font-size: 1.05rem; margin-bottom: var(--space-1); }

/* ---------- Sección "Problema" — lista editorial, no tarjetas ---------- */
.situation-intro {
  line-height: 1.6;
  font-family: var(--font-titulo);
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-petrol);
  max-width: 20ch;
  margin-bottom: var(--space-3);
}
.situation-list { display: block; }
.situation-item {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-borde);
  margin: 0;
}
.situation-item:first-child { border-top: 1px solid var(--color-borde); }
.situation-item-title {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-titulo);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-petrol);
  margin: 0 0 4px;
}
.situation-index {
  font-family: var(--font-titulo);
  font-weight: 700;
  color: var(--color-sand);
  font-size: 1rem;
  min-width: 26px;
}
.situation-item p {
  margin: 0;
  padding-left: 42px;
  color: var(--color-graphite);
}
/* ---------- Sección "Diferenciadores" — lista tipográfica, no cajas ---------- */
.fact-list { display: grid; gap: var(--space-2); margin: var(--space-3) 0; }
.fact-item {
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-left: 2px solid var(--color-sand-line);
  margin: 0;
}
.fact-title {
  font-family: var(--font-titulo);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--color-petrol);
  margin: 0 0 4px;
}
.fact-item p { margin: 0; font-size: .98rem; color: var(--color-graphite); }

/* ---------- Pasos "Cómo funciona" ---------- */
.steps {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-3) 0;
}
.step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}
.step-number {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-sand);
  min-width: 36px;
}
.step-title { font-weight: 700; margin: 0 0 2px; }

/* ---------- Revisión Fiscal ---------- */
.check-list {
  display: grid;
  gap: var(--space-1);
  margin: var(--space-3) 0;
}
.check-list li {
  padding-left: var(--space-2);
  position: relative;
  font-weight: 700;
  color: var(--color-petrol);
}
.check-list li::before { content: "·"; position: absolute; left: 0; color: var(--color-sand); }

.privacy-note {
  font-size: .85rem;
  color: var(--color-texto-muted);
  margin-bottom: var(--space-3);
}

/* ---------- Sobre Norma ---------- */
.about-inner {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}
.about-photo-frame {
  aspect-ratio: 4 / 5;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-ivory-soft);
}
.about-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.about-text .section-title { margin-bottom: var(--space-2); }

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--color-borde);
  padding: var(--space-2) 0;
}
.faq-item summary {
  font-weight: 700;
  cursor: pointer;
  color: var(--color-petrol);
  font-size: 1rem;
}
.faq-item summary::marker { color: var(--color-sand); }
.faq-item p { margin-top: var(--space-1); color: var(--color-graphite); }

/* ---------- Diagnóstico ---------- */
.diagnostico-form { margin-top: var(--space-4); }
.diagnostico-form .btn--primary { background: var(--color-ivory); color: var(--color-petrol); }
.diagnostico-form .btn--primary:hover { background: var(--color-ivory-soft); }
.diagnostico-form .btn--ghost { color: var(--color-ivory); border-color: var(--color-ivory); }

.form-progress {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}
.progress-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(245,241,233,.3);
}
.progress-dot.is-active { background: var(--color-sand); }
.form-progress-text {
  font-size: .85rem;
  color: var(--color-ivory);
  opacity: .8;
  margin-bottom: var(--space-3);
}

fieldset { border: none; padding: 0; margin: 0 0 var(--space-3); }
legend {
  font-family: var(--font-titulo);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-ivory);
  padding: 0;
  margin-bottom: var(--space-2);
}

.field { margin-bottom: var(--space-2); }
.field label {
  display: block;
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-ivory);
  margin-bottom: 4px;
}
.field-optional { font-weight: 400; opacity: .7; }
.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(245,241,233,.35);
  border-radius: var(--radius);
  background: rgba(245,241,233,.06);
  color: var(--color-ivory);
  font-family: var(--font-cuerpo);
  font-size: 1rem;
  min-height: 44px;
}
.field textarea { min-height: 72px; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder { color: rgba(245,241,233,.5); }
.field-help { font-size: .8rem; color: rgba(245,241,233,.7); margin-top: 4px; }
.field-error {
  font-size: .85rem;
  color: #E7B7A0;
  margin-top: 4px;
  min-height: 1.2em;
}
.field-privacy {
  font-size: .8rem;
  color: rgba(245,241,233,.7);
  margin-top: var(--space-1);
}
.field-privacy a { color: var(--color-ivory); text-decoration: underline; }

.radio-group { display: grid; gap: var(--space-1); margin-bottom: var(--space-1); }
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
  font-size: .95rem;
  color: var(--color-ivory);
  cursor: pointer;
}
.radio-option input { margin-top: 4px; width: 18px; height: 18px; flex-shrink: 0; accent-color: var(--color-sand); }

.form-status {
  min-height: 1.4em;
  color: #E7B7A0;
  font-size: .9rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.form-alt-contact { margin-top: var(--space-3); font-size: .9rem; }
.form-alt-contact a { color: var(--color-sand); font-weight: 700; }
.form-alt-contact--inverted { color: var(--color-ivory); }
.form-alt-contact--inverted a { color: var(--color-sand); }

/* ---------- Página de gracias ---------- */
.section--gracias { padding-top: var(--space-6); text-align: center; }
.gracias-content { display: flex; flex-direction: column; align-items: center; }
.gracias-links { margin-top: var(--space-3); font-size: .9rem; }
.gracias-links a { color: var(--color-petrol); text-decoration: underline; }

/* ---------- Página de privacidad (reutiliza patrones existentes) ---------- */
.legal-list {
  display: grid;
  gap: var(--space-1);
  margin: var(--space-2) 0 var(--space-3);
}
.legal-list li {
  padding-left: var(--space-2);
  position: relative;
  color: var(--color-graphite);
}
.legal-list li::before { content: "·"; position: absolute; left: 0; color: var(--color-sand); font-weight: 700; }

.privacy-warning {
  border-left: 3px solid var(--color-sand);
  background: var(--color-ivory-soft);
  padding: var(--space-2) var(--space-3);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: var(--space-2) 0 var(--space-3);
  font-size: .95rem;
  color: var(--color-graphite);
}
.privacy-warning strong { color: var(--color-petrol); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-graphite);
  color: var(--color-ivory);
  padding: var(--space-4) 0;
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-1); align-items: center; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: var(--space-1); }
.footer-contact a { color: var(--color-ivory); text-decoration: underline; }
.footer-legal { font-size: .8rem; opacity: .6; }
.footer-legal a { color: inherit; text-decoration: underline; }

/* ==========================================================================
   Responsive — mobile-first (base ~375px), 768px, 1024px, 1280px
   ========================================================================== */

@media (min-width: 768px) {
  .site-nav { display: flex; gap: var(--space-2); font-size: .88rem; white-space: nowrap; }
  .nav-toggle { display: none; }

  .logo-img--header { height: 64px; }

  .hero-title { font-size: 2.75rem; }
  .situation-list { columns: 1; }

  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .fact-list { grid-template-columns: repeat(3, 1fr); }

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

  .about-inner { grid-template-columns: 0.8fr 1.2fr; }

  .diagnostico-form { max-width: 620px; margin-left: auto; margin-right: auto; }
}

@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: .95fr 1.15fr; min-height: 620px; }
  .hero-text { padding: var(--space-5) var(--space-4); }
  .hero-title { font-size: 3.2rem; }
  .hero-visual { aspect-ratio: auto; }
  /* División editorial: línea sand sólida en el borde de la fotografía
     (sin degradado — descartado tras comparar ambas opciones en el
     prototipo V1.1). */
  .hero-visual::before {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: 0;
    width: 4px;
    background: var(--color-sand);
    z-index: 1;
  }

  .steps { grid-template-columns: repeat(4, 1fr); }
  .site-nav { font-size: .95rem; gap: var(--space-3); }
}

@media (min-width: 1280px) {
  .card-grid--4 { grid-template-columns: repeat(4, 1fr); }

  .hero-title { font-size: 3.75rem; }
  .hero-text-line { font-size: 1.15rem; }
  .section-title { font-size: 2rem; }
}

@media (max-width: 1023px) {
  .header-inner { gap: var(--space-1); }
  .btn--header { margin-left: 0; padding-left: 14px; padding-right: 14px; }
}

/* El logo del header ganó presencia (44/64px vs. 40px anterior) y ya no
   deja espacio para nav + CTA completos entre 768–1023px. Prioridad
   validada en el prototipo V1.1: 1) logo, 2) CTA, 3) navegación — la
   navegación colapsa antes (desde 768px, no solo <768px) en vez de
   comprimir el CTA. */
@media (max-width: 767px) {
  .btn--header { font-size: .82rem; padding-left: 10px; padding-right: 10px; }
}

/* Menú mobile abierto — colapsado hasta 1023px (antes solo <767px) */
@media (max-width: 1023px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-ivory);
    border-bottom: 1px solid var(--color-borde);
    padding: var(--space-2);
    flex-direction: column;
    gap: var(--space-2);
  }
  .site-nav.is-open { display: flex; }
  .header-inner { position: relative; }
  .nav-toggle { display: inline-block; }
}