/* ════════════════════════════════════════════════════════════
   IHC Tool™ Landing — styles
   Paleta:
     --navy:     #0A1628   (hero, headers, texto principal sobre claro)
     --navy-2:   #0D1F2D   (variantes oscuras)
     --cyan:     #00B4D8   (acento marca, CTAs)
     --cyan-2:   #0096B4   (cyan oscurecido para hovers)
     --text:     #1E293B   (texto principal)
     --muted:    #64748B   (texto secundario, captions)
     --bg:       #FFFFFF
     --bg-2:     #F8FAFC   (secciones alternadas)
     --bg-3:     #F1F5F9   (cards, separadores)
     --border:   #E2E8F0
   ──────────────────────────────────────────────────────────── */

* { box-sizing: border-box; }

:root {
  --navy:   #0A1628;
  --navy-2: #0D1F2D;
  --cyan:   #00B4D8;
  --cyan-2: #0096B4;
  --text:   #1E293B;
  --muted:  #64748B;
  --bg:     #FFFFFF;
  --bg-2:   #F8FAFC;
  --bg-3:   #F1F5F9;
  --border: #E2E8F0;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow:    0 4px 20px rgba(10,22,40,0.08);
  --shadow-lg: 0 20px 60px rgba(10,22,40,0.15);
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--cyan-2); }

h1, h2, h3, h4 {
  color: var(--navy);
  margin: 0 0 16px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 900; }
h2 { font-size: clamp(26px, 3.5vw, 36px); font-weight: 800; }
h3 { font-size: 18px; font-weight: 700; }
h4 { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
p  { margin: 0 0 16px; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 760px; }

/* ════════════════════════════════════════════════════════════
   COMPONENTES: botones
   ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 15px;
  text-align: center;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.15s ease;
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary {
  background: var(--cyan);
  color: var(--navy);
  border-color: var(--cyan);
}
.btn-primary:hover {
  background: var(--cyan-2);
  border-color: var(--cyan-2);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.btn-sm  { padding: 8px 16px; font-size: 14px; }
.btn-block { display: block; width: 100%; }

/* ════════════════════════════════════════════════════════════
   NAV
   ──────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-size: 20px;
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -0.02em;
}
.brand span { color: var(--cyan); }

/* Brand de dos líneas (TyrAdvisor sombrilla + IHC Tool™ producto destacado).
   Se usa solo en nav y footer. */
.brand-block {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  line-height: 1;
}
.brand-block:hover { color: var(--navy); }
.logo-mark { display: inline-flex; }
.logo-mark svg { display: block; }
/* Logo image (TyrAdvisor PNG). Squared crop with object-fit so the
   shape stays sharp at small sizes. */
.logo-img {
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
.logo-img-footer {
  display: block;
  object-fit: contain;
  flex-shrink: 0;
  /* Slight tint adjustment if needed in dark footer — actually the logo
     has its own colors (navy, gold, red), no filter needed. */
}
.brand-stack { display: inline-flex; flex-direction: column; gap: 2px; }
.brand-parent {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.brand-product {
  font-size: 18px;
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -0.02em;
}
.brand-product em { color: var(--cyan); font-style: normal; }

/* Versión light: se usa sobre fondos oscuros (footer) */
.brand-stack-light {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}
.brand-parent-light {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.5);
}
.brand-product-light {
  font-size: 18px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.02em;
}
.brand-product-light em { color: var(--cyan); font-style: normal; }
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
}
.nav-links a:hover { color: var(--cyan); }

/* ════════════════════════════════════════════════════════════
   HERO
   ──────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  padding: 80px 0 100px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-copy h1 { margin-bottom: 24px; }
.lead {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-cta {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.hero-trust {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

/* Hero visual: real dashboard screenshot.
   Marco con sombra y borde sutil para que se sienta "ventana de app". */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-screenshot {
  width: 100%;
  max-width: 640px;
  height: auto;
  display: block;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  transition: transform 0.3s ease;
}
.hero-screenshot:hover {
  transform: translateY(-4px);
}

/* ════════════════════════════════════════════════════════════
   SECCIONES GENÉRICAS
   ──────────────────────────────────────────────────────────── */
section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 16px; }
.section-sub {
  text-align: center;
  font-size: 17px;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 56px;
}

/* ════════════════════════════════════════════════════════════
   PROBLEMA
   ──────────────────────────────────────────────────────────── */
.problema { background: var(--bg-2); }
.problema-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.problema-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.problema-card .icon { font-size: 36px; margin-bottom: 12px; }
.problema-card h3 { margin-bottom: 8px; }
.problema-card p { color: var(--muted); margin: 0; font-size: 14px; }

/* ════════════════════════════════════════════════════════════
   SOLUCIÓN
   ──────────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.15s ease;
}
.feature:hover {
  border-color: var(--cyan);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.feature h3 { margin-bottom: 8px; }
.feature p { color: var(--muted); margin: 0; font-size: 15px; }

/* ════════════════════════════════════════════════════════════
   CÓMO FUNCIONA
   ──────────────────────────────────────────────────────────── */
.como-funciona { background: var(--bg-2); }
.pasos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.paso { text-align: center; }
.paso-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--cyan);
  color: var(--navy);
  border-radius: 50%;
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 16px;
}
.paso h3 { margin-bottom: 8px; }
.paso p { color: var(--muted); margin: 0; font-size: 15px; }

/* ════════════════════════════════════════════════════════════
   PRIVACIDAD (banner destacado)
   ──────────────────────────────────────────────────────────── */
.privacidad {
  background: var(--navy);
  color: #fff;
}
.privacidad-inner {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.lock {
  font-size: 56px;
  margin-bottom: 16px;
}
.privacidad h2 {
  color: #fff;
  margin-bottom: 16px;
}
.privacidad p {
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  margin: 0;
}

/* ════════════════════════════════════════════════════════════
   PLANES
   ──────────────────────────────────────────────────────────── */
.planes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 16px;
}
.plan-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
}
.plan-card.plan-popular {
  border-color: var(--cyan);
  box-shadow: var(--shadow);
  transform: scale(1.03);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan);
  color: var(--navy);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.plan-name {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 16px;
}
.plan-price {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}
.plan-price .amount {
  font-size: 28px;
  font-weight: 900;
  color: var(--navy);
}
.plan-price .period {
  color: var(--muted);
  font-size: 14px;
}
.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  flex-grow: 1;
}
.plan-features li {
  padding: 6px 0;
  font-size: 14px;
}
.plan-features li.off { color: #CBD5E1; }
.plan-cta { width: 100%; }

/* Letra chica de aclaraciones de plan (ej: Enterprise, condiciones de presencialidad).
   Se ubica entre la lista de features y el CTA. */
.plan-fineprint {
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
  margin: 0 0 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.plan-fineprint strong { color: var(--text); }

/* ════════════════════════════════════════════════════════════
   SERVICIOS (add-on de toma de inventario en terreno)
   ──────────────────────────────────────────────────────────── */
.servicios { background: var(--bg-2); }
.servicios-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.servicios-copy h2 { margin-bottom: 20px; }
.servicios-copy p {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 16px;
}
.servicios-copy p.muted {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 28px;
}
.kicker {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(0,180,216,0.1);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.servicios-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  position: relative;
}
.servicios-icon {
  font-size: 42px;
  margin-bottom: 12px;
}
.servicios-card h3 {
  font-size: 20px;
  margin-bottom: 20px;
}
.servicios-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.servicios-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
}
.servicios-price {
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ════════════════════════════════════════════════════════════
   FAQ
   ──────────────────────────────────────────────────────────── */
.faq { background: var(--bg-2); }
.faq-list { margin-top: 32px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  color: var(--cyan);
  font-weight: 300;
  line-height: 1;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { background: var(--bg-3); }
.faq-item p {
  padding: 0 24px 20px;
  margin: 0;
  color: var(--muted);
}
.faq-item code {
  background: var(--bg-3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'SF Mono', Monaco, monospace;
}

/* ════════════════════════════════════════════════════════════
   CONTACTO (form)
   ──────────────────────────────────────────────────────────── */
.contacto-form { margin-top: 32px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.field {
  display: block;
  margin-bottom: 16px;
}
.field span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--cyan);
}
.field textarea { resize: vertical; }
.form-legal {
  font-size: 12px;
  color: var(--muted);
  margin: 16px 0;
}
.hp { position: absolute; left: -9999px; }  /* honeypot oculto */

/* ════════════════════════════════════════════════════════════
   FOOTER
   ──────────────────────────────────────────────────────────── */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding-top: 56px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.brand-light { color: #fff; }
.brand-light span { color: var(--cyan); }
.footer-brand p {
  margin: 8px 0 0;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.footer-col h4 {
  color: #fff;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  padding: 4px 0;
}
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE — mobile (≤768px)
   ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  section { padding: 56px 0; }

  .nav-links { display: none; }  /* simplificamos en mobile; agregar burger en v2 */
  .nav-inner { height: 56px; }

  .hero { padding: 48px 0 64px; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual { order: 2; }
  .hero-copy   { order: 1; }

  .problema-grid,
  .features-grid,
  .pasos-grid,
  .planes-grid,
  .servicios-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .plan-card.plan-popular { transform: none; }  /* sin scale en mobile */

  .form-grid { grid-template-columns: 1fr; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}