/* =========================================================
   FTC Asesorías — FTC GROUP S.A.S.
   Paleta institucional: dorado del logo, negro, grises y blanco.
   ========================================================= */

:root {
  --negro: #0E0E0E;          /* secciones oscuras y encabezado */
  --negro-2: #191919;        /* superficies sobre negro */
  --negro-3: #070707;        /* pie de página */
  --blanco: #FFFFFF;
  --gris-claro: #F3F3F2;     /* secciones alternas */
  --gris-linea: #DCDCDA;     /* líneas sobre claro */
  --gris-linea-osc: rgba(255, 255, 255, .12);
  --texto: #161616;
  --texto-suave: #5C5C5C;
  --texto-claro: #F5F5F4;
  --texto-claro-suave: #B4B4B2;
  --oro: #E2BA4F;            /* dorado del logo, sobre negro */
  --oro-claro: #F0CF6B;
  --oro-texto: #8A6B12;      /* dorado legible sobre blanco */
  --error: #A12A1E;

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --header-h: 78px;
  --focus: var(--texto);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--texto);
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 600; line-height: 1.15; letter-spacing: -.01em; }
p, dl, dd { margin: 0; }

.wrap { width: min(1200px, 100% - 32px); margin-inline: auto; }
.ic { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ic-fill { stroke: none; }

.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--oro); color: var(--negro); padding: 8px 14px; font-weight: 600; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
.dark, .site-header, .footer { --focus: var(--oro); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 26px; border-radius: 2px; border: 1px solid transparent;
  font: 600 15px/1 var(--sans); letter-spacing: .01em; text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn-gold { background: var(--oro); color: var(--negro); }
.btn-gold:hover { background: var(--oro-claro); }
.btn-dark { background: var(--negro); color: var(--blanco); }
.btn-dark:hover { background: #2B2B2B; }
.btn-line { border-color: rgba(226, 186, 79, .6); color: var(--texto-claro); }
.btn-line:hover { border-color: var(--oro); background: var(--oro); color: var(--negro); }
.btn-block { width: 100%; }

/* ---------- Encabezado ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--negro); color: var(--texto-claro); border-bottom: 1px solid var(--gris-linea-osc); }
.header-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; color: var(--texto-claro); }
.brand img { width: 40px; height: 40px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--serif); font-size: 20px; font-weight: 600; }
.brand-text small { font-size: 12px; color: var(--texto-claro-suave); margin-top: 2px; letter-spacing: .02em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a:not(.btn) {
  padding: 8px 12px; text-decoration: none; font-size: 15px; font-weight: 500; color: var(--texto-claro);
}
.nav a:not(.btn):hover { color: var(--oro); }
.nav-cta { margin-left: 16px; min-height: 42px; padding: 0 18px; }

.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--texto-claro); margin: 5px 0; transition: transform .25s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Superficies ---------- */
.dark { background: var(--negro); color: var(--texto-claro); }
.light { background: var(--blanco); }
.grey { background: var(--gris-claro); }

.section { padding: 112px 0; }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section h2 { font-size: clamp(32px, 3.6vw, 46px); }
.section-head p { margin-top: 20px; font-size: 18px; color: var(--texto-suave); max-width: 62ch; }
.dark .section-head p { color: var(--texto-claro-suave); }

/* ---------- Portada ---------- */
.hero { padding: 96px 0 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 64px; align-items: center; padding-bottom: 96px; }
.hero h1 { font-size: clamp(38px, 4.6vw, 60px); line-height: 1.1; color: var(--blanco); max-width: 18ch; }
.lead { margin-top: 28px; font-size: 19px; color: var(--texto-claro-suave); max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }

.seal { justify-self: center; position: relative; width: min(380px, 100%); aspect-ratio: 1; display: grid; place-items: center; }
.seal::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid rgba(226, 186, 79, .35);
}
.seal img { width: 74%; height: auto; }

.credentials {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid rgba(226, 186, 79, .45);
}
.credentials > div { padding: 26px 24px 30px 0; }
.credentials > div + div { padding-left: 24px; border-left: 1px solid var(--gris-linea-osc); }
.credentials dt { font-size: 13px; color: var(--texto-claro-suave); letter-spacing: .02em; }
.credentials dd { margin-top: 6px; font-size: 17px; font-weight: 600; color: var(--blanco); font-variant-numeric: tabular-nums; }

/* ---------- Servicios ---------- */
.split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 80px; align-items: start; }
.split-head { position: sticky; top: calc(var(--header-h) + 40px); }
.split-head p { margin: 22px 0 32px; font-size: 18px; color: var(--texto-suave); max-width: 44ch; }

.services { border-top: 2px solid var(--negro); }
.services > div {
  display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 8px 40px;
  padding: 26px 0; border-bottom: 1px solid var(--gris-linea);
}
.services dt { font-family: var(--serif); font-size: 21px; font-weight: 600; line-height: 1.3; }
.services dd { color: var(--texto-suave); max-width: 54ch; }

/* ---------- Soluciones tecnológicas ---------- */
.products { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.product { display: grid; grid-template-rows: auto 1fr; background: var(--negro-2); border: 1px solid var(--gris-linea-osc); }
.product-logo { height: 200px; display: grid; place-items: center; padding: 24px; }
.product-logo img { max-height: 150px; width: auto; object-fit: contain; }
.product-logo.logo-wide img { max-width: 76%; }
.plate-cream { background: #FDF8EF; }
.plate-white { background: var(--blanco); }
.plate-black { background: #000; }
.product-body { display: flex; flex-direction: column; align-items: flex-start; padding: 30px 30px 34px; border-top: 1px solid var(--gris-linea-osc); }
.product-body h3 { font-size: 27px; color: var(--blanco); }
.product-kind { margin-top: 4px; font-size: 15px; font-weight: 600; color: var(--oro); }
.product-body p:not(.product-kind) { margin: 16px 0 28px; color: var(--texto-claro-suave); max-width: 52ch; }
.product-body .btn { margin-top: auto; }

.custom {
  margin-top: 24px; padding: 34px 30px; border: 1px solid rgba(226, 186, 79, .45);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px;
}
.custom h3 { font-size: 25px; color: var(--blanco); margin-bottom: 8px; }
.custom p { color: var(--texto-claro-suave); max-width: 62ch; }

/* ---------- La firma ---------- */
.about { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 80px; align-items: start; }
.about-copy p { margin-top: 22px; font-size: 18px; color: var(--texto-suave); max-width: 60ch; }
.values { border-top: 2px solid var(--negro); }
.values > div { padding: 22px 0; border-bottom: 1px solid var(--gris-linea); }
.values dt { font-family: var(--serif); font-size: 21px; font-weight: 600; }
.values dd { margin-top: 4px; color: var(--texto-suave); }

/* ---------- Proceso ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); counter-reset: paso; border-top: 2px solid var(--negro); }
.steps li { counter-increment: paso; padding: 30px 28px 8px 0; }
.steps li + li { padding-left: 28px; border-left: 1px solid var(--gris-linea); }
.steps li::before {
  content: counter(paso); display: block; margin-bottom: 16px;
  font-family: var(--serif); font-size: 44px; line-height: 1; font-weight: 500; color: var(--oro-texto);
}
.steps h3 { font-size: 22px; margin-bottom: 8px; }
.steps p { color: var(--texto-suave); font-size: 16px; }

/* ---------- Preguntas ---------- */
.faq-wrap { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 64px; align-items: start; }
.faq-wrap .section-head { margin-bottom: 0; }
.faq { border-top: 2px solid var(--negro); }
.faq details { border-bottom: 1px solid var(--gris-linea); }
.faq summary {
  list-style: none; cursor: pointer; position: relative;
  padding: 22px 48px 22px 0; font-size: 18px; font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before, .faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 14px; height: 1.5px; background: var(--texto);
  transition: transform .2s ease;
}
.faq summary::after { transform: rotate(90deg); }
.faq details[open] summary::after { transform: rotate(0deg); }
.faq summary:hover { color: var(--oro-texto); }
.faq details p { padding: 0 48px 24px 0; color: var(--texto-suave); max-width: 66ch; }

/* ---------- Contacto ---------- */
.contact { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 80px; align-items: start; }
.contact-copy > p { margin-top: 20px; font-size: 18px; color: var(--texto-claro-suave); max-width: 44ch; }
.contact-list { list-style: none; padding: 0; margin: 40px 0 0; border-top: 1px solid rgba(226, 186, 79, .45); }
.contact-list li { display: flex; align-items: center; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--gris-linea-osc); font-size: 17px; }
.contact-list .ic { width: 22px; height: 22px; color: var(--oro); }
.contact-list a { color: var(--texto-claro); text-decoration: none; }
.contact-list a:hover { color: var(--oro); }
.contact-list span { color: var(--texto-claro); overflow-wrap: anywhere; }

.form { background: var(--blanco); color: var(--texto); padding: 38px 36px; display: grid; gap: 20px; border-top: 3px solid var(--oro); }
.field { display: grid; gap: 8px; }
.field label { font-weight: 600; font-size: 15px; }
.field label small { font-weight: 400; color: var(--texto-suave); }
.field input, .field select, .field textarea {
  width: 100%; font: 400 16px/1.4 var(--sans); color: var(--texto);
  padding: 13px 14px; border-radius: 2px; border: 1px solid #C9C9C7; background: var(--blanco);
}
.field textarea { resize: vertical; min-height: 112px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--negro); box-shadow: 0 0 0 3px rgba(226, 186, 79, .35); }
.field .invalid { border-color: var(--error); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--texto-suave); }
.check input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--negro); flex: none; }
.check a { color: var(--texto); font-weight: 600; }
.form-error { color: var(--error); font-size: 15px; font-weight: 600; }

/* ---------- Pie ---------- */
.footer { background: var(--negro-3); color: var(--texto-claro-suave); padding: 80px 0 32px; font-size: 15px; border-top: 1px solid rgba(226, 186, 79, .45); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand p { margin-top: 20px; max-width: 38ch; }
.footer h4 { color: var(--blanco); font-size: 18px; margin-bottom: 14px; }
.footer-grid > div > a:not(.brand), .footer-grid > div > span { display: block; color: var(--texto-claro-suave); text-decoration: none; margin-bottom: 10px; overflow-wrap: anywhere; }
.footer-grid > div > a:not(.brand):hover { color: var(--oro); }
.footer-bottom {
  margin-top: 64px; padding: 24px 72px 0 0; border-top: 1px solid var(--gris-linea-osc);
  display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; font-size: 14px;
}
.footer-bottom a { color: var(--texto-claro-suave); }
.footer-bottom a:hover { color: var(--oro); }
.legal-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-legal { padding: 28px 0; }
.footer-legal .footer-bottom { margin-top: 0; padding-top: 0; border-top: 0; }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 40; width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center; background: var(--negro); color: var(--oro);
  border: 1px solid var(--oro); box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
}
.wa-float:hover { background: var(--oro); color: var(--negro); }
.wa-float .ic { width: 28px; height: 28px; }

/* ---------- Páginas legales ---------- */
.btn-ghost { border-color: rgba(226, 186, 79, .6); color: var(--texto-claro); min-height: 42px; padding: 0 18px; }
.btn-ghost:hover { background: var(--oro); border-color: var(--oro); color: var(--negro); }
.legal { padding: 72px 0 112px; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(32px, 4.2vw, 46px); padding-bottom: 22px; border-bottom: 2px solid var(--negro); }
.legal .meta { color: var(--texto-suave); margin: 14px 0 8px; }
.legal h2 { font-size: 24px; margin: 44px 0 12px; }
.legal p, .legal li { color: #333; margin-bottom: 12px; max-width: 70ch; }
.legal ul { padding-left: 22px; }
.legal a { color: var(--oro-texto); font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav a:not(.btn) { padding: 8px 9px; font-size: 14px; }
  .split, .about, .contact { gap: 56px; }
  .credentials { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .credentials > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .credentials > div:nth-child(n+3) { border-top: 1px solid var(--gris-linea-osc); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li:nth-child(3) { padding-left: 0; border-left: 0; }
  .steps li:nth-child(n+3) { border-top: 1px solid var(--gris-linea); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--negro); padding: 8px 16px 20px; border-bottom: 1px solid rgba(226, 186, 79, .45);
    opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }
  .nav.open { opacity: 1; visibility: visible; transform: none; }
  .nav a:not(.btn) { padding: 16px 4px; font-size: 17px; border-bottom: 1px solid var(--gris-linea-osc); }
  .nav-cta { margin: 16px 0 0; min-height: 50px; }

  .section { padding: 80px 0; }
  .hero { padding-top: 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; padding-bottom: 64px; }
  .seal { width: min(240px, 70%); justify-self: start; }
  .split, .about, .contact, .faq-wrap { grid-template-columns: 1fr; }
  .split-head { position: static; }
  .products { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .lead, .section-head p, .split-head p, .about-copy p, .contact-copy > p { font-size: 17px; }
  .hero-actions .btn { width: 100%; }
  .credentials { grid-template-columns: 1fr; }
  .credentials > div, .credentials > div + div { padding: 18px 0; border-left: 0; }
  .credentials > div + div { border-top: 1px solid var(--gris-linea-osc); }
  .services > div { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li + li { padding: 24px 0 8px; border-left: 0; }
  .steps li + li { border-top: 1px solid var(--gris-linea); }
  .product-logo { height: 170px; }
  .product-logo img { max-height: 125px; }
  .product-body { padding: 24px 22px 28px; }
  .custom { padding: 26px 22px; }
  .form { padding: 28px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .brand-text small { display: none; }
}

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