/* =========================================================
   Linx Capital Investments Group — style.css
   HTML5 + CSS3 puro. Sin frameworks.
   ========================================================= */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:   #000F1D;   /* azul marino oscuro */
  --white:  #FFFFFF;
  --cyan:   #0090BC;   /* azul cian de acento */
  --text:   #000F1D;   /* texto sobre fondo claro */
  --muted:  #5a6675;
  --line:   rgba(255,255,255,.25);

  --serif:  "Playfair Display", Georgia, serif;
  --sans:   "Open Sans", system-ui, -apple-system, Arial, sans-serif;

  --header-h: 92px;
  --maxw: 1200px;
}

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
  background: var(--navy);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--cyan); text-decoration: none; transition: opacity .2s ease, color .2s ease; }
a:hover { opacity: .75; }

/* ---------- Helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

.section { padding: 110px 0; position: relative; overflow: hidden; }
.section--navy  { background: var(--navy);  color: var(--white); }
.section--light { background: var(--white); color: var(--text); }

.eyebrow {
  font-family: var(--serif);
  color: var(--cyan);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1.12;
  margin-bottom: 22px;
}
.section--navy .section-title { color: var(--white); }
.section--light .section-title { color: var(--navy); }

/* línea separadora decorativa */
.rule { width: 70px; height: 2px; background: var(--cyan); border: 0; margin: 0 0 34px; }
.is-center .rule { margin-left: auto; margin-right: auto; }
.is-center { text-align: center; }

.lead p { margin-bottom: 20px; max-width: 760px; }
.lead p:last-child { margin-bottom: 0; }

/* fade-in al hacer scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background .35s ease, box-shadow .35s ease, height .35s ease;
}
.site-header.scrolled {
  background: var(--navy);
  box-shadow: 0 2px 24px rgba(0,0,0,.35);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: inline-flex; align-items: center; }
.brand img { height: 58px; width: auto; }

.main-nav ul { list-style: none; display: flex; gap: 38px; align-items: center; }
.main-nav a {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--cyan);
  font-weight: 500;
  letter-spacing: .02em;
}
.main-nav a:hover { color: var(--white); opacity: 1; }

/* link "volver" en subpáginas */
.back-link {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.back-link:hover { color: var(--white); opacity: 1; }

/* hamburguesa */
.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px; position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 7px; right: 7px; height: 2px;
  background: var(--cyan); transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle span { top: 50%; transform: translateY(-50%); }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after  { top: 8px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(8px) rotate(45deg); }
.nav-open .nav-toggle span::after  { transform: translateY(-8px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--navy) url("../assets/Fondo-Linx-Capital.jpg") center/cover no-repeat;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,15,29,.55) 0%, rgba(0,15,29,.62) 100%);
}
.hero__inner { position: relative; z-index: 2; padding: 0 24px; }
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--white);
  font-size: clamp(44px, 9vw, 110px);
  line-height: 1.05;
  letter-spacing: .005em;
  text-shadow: 0 2px 30px rgba(0,0,0,.35);
}

/* indicador de scroll */
.scroll-down {
  position: absolute;
  left: 50%; bottom: 38px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--white);
}
.scroll-down .mouse {
  width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,.8);
  border-radius: 14px;
  position: relative;
}
.scroll-down .mouse::before {
  content: "";
  position: absolute; left: 50%; top: 8px;
  width: 4px; height: 8px; border-radius: 2px;
  background: var(--white);
  transform: translateX(-50%);
  animation: wheel 1.6s ease-in-out infinite;
}
.scroll-down span { font-size: 12px; letter-spacing: .25em; text-transform: uppercase; opacity: .85; }
@keyframes wheel { 0% { opacity: 0; top: 8px; } 40% { opacity: 1; } 100% { opacity: 0; top: 22px; } }

/* =========================================================
   NOSOTROS
   ========================================================= */
#nosotros { position: relative; }
#nosotros .container { position: relative; z-index: 2; }
.watermark {
  position: absolute;
  right: -40px; bottom: -30px;
  width: min(48vw, 560px);
  opacity: .05;
  z-index: 1;
  pointer-events: none;
  user-select: none;
}

/* =========================================================
   ESTRATEGIA — tarjetas
   ========================================================= */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 56px;
  text-align: left;
}
.card {
  background: var(--white);
  color: var(--navy);
  padding: 40px 34px;
  border-radius: 2px;
  box-shadow: 0 18px 50px rgba(0,0,0,.28);
  display: flex;
  flex-direction: column;
}
.card h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 29px;
  line-height: 1.2;
  margin-bottom: 18px;
}
.card .card-sep { width: 46px; height: 2px; background: var(--cyan); margin-bottom: 18px; }
.card p { color: var(--muted); margin-bottom: 12px; }
.card ul { list-style: none; margin-top: 6px; }
.card .stat {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--navy);
  font-weight: 600;
  line-height: 1.5;
}

/* galería */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 80px;
  text-align: left;
}
.gallery h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  color: var(--white);
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.gallery figure { margin-bottom: 22px; overflow: hidden; border-radius: 2px; }
.gallery img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform .6s ease;
}
.gallery figure:hover img { transform: scale(1.05); }

/* =========================================================
   INNOVACIÓN
   ========================================================= */
#innovacion { position: relative; }
#innovacion::before {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 55%;
  background: url("../assets/tokenizacion.svg") right center/contain no-repeat;
  opacity: .9;
  z-index: 1;
  pointer-events: none;
}
#innovacion .container { position: relative; z-index: 2; }
#innovacion .lead { max-width: 620px; }
#innovacion .lead p { max-width: 620px; }
.partners { margin-top: 6px; font-weight: 600; }
.partners a { font-weight: 700; }

/* =========================================================
   CONTACTO
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 52px;
  text-align: center;
}
.contact-grid .col { padding: 14px 30px; position: relative; }
.contact-grid .col + .col::before {
  content: "";
  position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 1px; background: var(--line);
}
.contact-grid h4 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 20px;
  color: var(--cyan);
  margin-bottom: 12px;
}
.contact-grid p, .contact-grid a { color: var(--white); }
.contact-grid a:hover { color: var(--cyan); opacity: 1; }

.map-wrap {
  margin-top: 60px;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0,0,0,.4);
}
.map-wrap iframe { width: 100%; height: 420px; border: 0; display: block; filter: grayscale(.2); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,.7);
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 13.5px;
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.site-footer .legal-links { display: flex; flex-wrap: wrap; gap: 10px; }
.site-footer .legal-links a { color: rgba(255,255,255,.7); }
.site-footer .legal-links a:hover { color: var(--cyan); opacity: 1; }
.site-footer .legal-links span { opacity: .4; }

/* =========================================================
   SUBPÁGINAS LEGALES
   ========================================================= */
.legal-page { background: var(--white); }
.legal-hero {
  background: var(--navy);
  padding: calc(var(--header-h) + 70px) 0 70px;
}
.legal-hero .eyebrow { margin-bottom: 10px; }
.legal-hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--white);
  font-size: clamp(32px, 5vw, 48px);
}
.legal-hero .rule { margin-bottom: 0; }

.legal-body { padding: 70px 0 90px; color: var(--text); }
.legal-body .container { max-width: 920px; }
.legal-body h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 23px;
  color: var(--navy);
  margin: 38px 0 14px;
}
.legal-body h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--navy);
  margin: 26px 0 10px;
}
.legal-body p { margin-bottom: 16px; color: #283340; }
.legal-body ul { margin: 0 0 18px 22px; }
.legal-body li { margin-bottom: 10px; color: #283340; }
.legal-body .muted-note { color: var(--muted); font-size: 15px; }

/* Tablón de anuncios — tabs */
.tablon-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}
.tabs-nav { list-style: none; position: sticky; top: calc(var(--header-h) + 20px); }
.tabs-nav li { margin-bottom: 4px; }
.tabs-nav label {
  display: block;
  font-family: var(--serif);
  font-size: 17px;
  padding: 14px 18px;
  border-left: 3px solid transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.tabs-nav label:hover { color: var(--navy); }

.tab-input { position: absolute; opacity: 0; pointer-events: none; }
.tab-panel { display: none; }

#tab1:checked ~ .tablon-layout .tabs-nav label[for="tab1"],
#tab2:checked ~ .tablon-layout .tabs-nav label[for="tab2"],
#tab3:checked ~ .tablon-layout .tabs-nav label[for="tab3"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(0,144,188,.06);
  font-weight: 600;
}
#tab1:checked ~ .tablon-layout .tab-content #panel1,
#tab2:checked ~ .tablon-layout .tab-content #panel2,
#tab3:checked ~ .tablon-layout .tab-content #panel3 { display: block; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  #innovacion::before { width: 100%; opacity: .12; }
  .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid .col + .col::before { display: none; }
  .contact-grid .col + .col { border-top: 1px solid var(--line); padding-top: 28px; }
  .tablon-layout { grid-template-columns: 1fr; gap: 24px; }
  .tabs-nav { position: static; display: flex; flex-wrap: wrap; gap: 6px; border-bottom: 1px solid #e3e7ec; }
  .tabs-nav label { border-left: 0; border-bottom: 3px solid transparent; }
  #tab1:checked ~ .tablon-layout .tabs-nav label[for="tab1"],
  #tab2:checked ~ .tablon-layout .tabs-nav label[for="tab2"],
  #tab3:checked ~ .tablon-layout .tabs-nav label[for="tab3"] {
    border-left-color: transparent; border-bottom-color: var(--cyan);
  }
}

@media (max-width: 820px) {
  :root { --header-h: 76px; }
  .section { padding: 78px 0; }
  .brand img { height: 46px; }

  .nav-toggle { display: block; z-index: 110; }
  .main-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    background: var(--navy);
    padding: calc(var(--header-h) + 20px) 32px 40px;
    transform: translateX(100%);
    transition: transform .35s ease;
    box-shadow: -10px 0 40px rgba(0,0,0,.4);
  }
  .nav-open .main-nav { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 26px; }
  .main-nav a { font-size: 22px; }
  /* el header siempre con fondo cuando el menú está abierto */
  .nav-open .site-header { background: var(--navy); }
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .container { padding: 0 20px; }
  .card { padding: 32px 26px; }
  .site-footer .container { flex-direction: column; align-items: flex-start; }
}