/* =========================================================================
   WEAI · Sistema de diseño compartido
   Reconstruido a partir de la landing de referencia (index-reference.html)
   Fuentes: Sora (UI) + Space Mono (mono/labels) vía Google Fonts
   ========================================================================= */

:root {
  /* Marca */
  --teal-900: #08201D;   /* footer */
  --teal-850: #0a2f2b;   /* gradiente oscuro (fin) */
  --teal-800: #0f2e2a;   /* fondos oscuros planos */
  --teal-700: #0f4e48;   /* gradiente oscuro (medio) */
  --teal-600: #15766E;   /* verde marca (sólido) */
  --teal-500: #1e9488;   /* gradiente oscuro (luz) */
  --teal-400: #22A597;   /* verde brillante */
  --mint-400: #5fe6d3;   /* menta acento */
  --mint-300: #8ff5e6;   /* menta clara */
  --mint-200: #c9fff7;   /* menta pálida */

  /* Neutros claros */
  --bg-light: #F7FAF9;   /* fondo secciones claras */
  --bg-cream: #faf9f5;
  --ink: #0f2e2a;        /* texto principal sobre claro */
  --ink-soft: #4a5d59;   /* texto secundario sobre claro */
  --ink-mute: #5a6d69;
  --ink-faint: #7a8b87;
  --line: #e3ece9;       /* bordes sobre claro */
  --line-soft: #eef2f0;

  /* Sobre oscuro */
  --on-dark: #EAF6F4;
  --on-dark-soft: #bfe3dd;
  --on-dark-mute: #8fbfb8;
  --on-dark-faint: #5c736f;

  /* Vidrio */
  --glass-bg: rgba(255,255,255,.08);
  --glass-bg-soft: rgba(255,255,255,.07);
  --glass-border: rgba(255,255,255,.16);
  --glass-border-soft: rgba(255,255,255,.12);

  /* Gradientes */
  --grad-hero: radial-gradient(1200px 700px at 75% -5%, #1e9488 0%, #0f4e48 42%, #0a2f2b 100%);
  --grad-left: radial-gradient(1000px 600px at 15% 0%, #1e9488 0%, #0f4e48 45%, #0a2f2b 100%);
  --grad-bottom: radial-gradient(900px 500px at 80% 100%, #1e9488 0%, #0f4e48 45%, #0a2f2b 100%);
  --grad-mint: linear-gradient(120deg, #8ff5e6, #c9fff7);
  --grad-brand: linear-gradient(135deg, #15766E, #22A597);
  --grad-cta: linear-gradient(120deg, #15766E, #22A597);
  --grad-cta-bright: linear-gradient(120deg, #22A597, #5fe6d3);

  /* Radios / sombras */
  --r-pill: 100px;
  --r-lg: 24px;
  --r-md: 20px;
  --r-sm: 14px;
  --shadow-card: 0 20px 50px -34px rgba(21,118,110,.5);
  --shadow-card-lg: 0 30px 70px -44px rgba(21,118,110,.5);
  --shadow-cta: 0 18px 44px -14px rgba(21,118,110,.6);

  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-light);
  color: var(--ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; letter-spacing: -.02em; }

/* ---- utilidades de anchura ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: 32px; padding-right: 32px; }
.wrap-narrow { max-width: 820px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }
.rel { position: relative; z-index: 2; }
.text-center { text-align: center; }
.mt-36 { margin-top: 36px; }
.split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center; }
.split--even { grid-template-columns: 1fr 1fr; }

/* logo */
.logo-img { height: 28px; width: auto; }
.logo-white { filter: brightness(0) invert(1); }

/* breadcrumb */
.crumb { font-size: 13px; color: var(--on-dark-mute); margin-bottom: 20px; letter-spacing: .02em; }
.crumb a:hover { color: var(--mint-300); }
.crumb span { opacity: .55; margin: 0 6px; }

/* =========================================================================
   Secciones base (claro / oscuro)
   ========================================================================= */
.section { padding: 100px 0; position: relative; overflow: hidden; }
.section--light { background: var(--bg-light); color: var(--ink); }
.section--dark  { background: var(--teal-800); color: var(--on-dark); }
.section--grad      { background: var(--grad-hero);   color: var(--on-dark); }
.section--grad-left { background: var(--grad-left);   color: var(--on-dark); }
.section--grad-bot  { background: var(--grad-bottom); color: var(--on-dark); }

/* etiqueta de sección "01 · La diferencia" */
.eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; margin-bottom: 16px; color: var(--teal-600);
}
.section--dark .eyebrow, .section--grad .eyebrow,
.section--grad-left .eyebrow, .section--grad-bot .eyebrow { color: var(--mint-300); }

.section-head { max-width: 840px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

h1 { font-size: 60px; line-height: 1.05; letter-spacing: -.03em; font-weight: 700; }
h2 { font-size: 46px; font-weight: 700; line-height: 1.08; }
h3 { font-size: 22px; font-weight: 600; }
h4 { font-size: 18px; font-weight: 600; }

.lead { font-size: 18px; line-height: 1.65; color: var(--ink-soft); margin: 0; }
.section--dark .lead, .section--grad .lead,
.section--grad-left .lead, .section--grad-bot .lead { color: var(--on-dark-soft); }

.mint-text {
  background: var(--grad-mint); -webkit-background-clip: text;
  background-clip: text; -webkit-text-fill-color: transparent;
}

/* =========================================================================
   Navegación (glass pill)
   ========================================================================= */
.nav-shell { max-width: var(--maxw); margin: 0 auto; padding: 22px 32px 0; position: relative; z-index: 3; }
.nav {
  background: var(--glass-bg); backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.14); border-radius: var(--r-pill);
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px 14px 28px;
}
.nav__brand { display: flex; align-items: center; gap: 10px; }
.nav__brand img { height: 26px; }
.nav__brand span { font-weight: 700; font-size: 18px; letter-spacing: .02em; }
.nav__brand .accent { color: var(--mint-300); }
.navlinks { display: flex; gap: 32px; font-size: 14.5px; color: #cfe6e2; }
.navlinks a { transition: color .2s; }
.navlinks a:hover { color: #fff; }
.navcta {
  background: #fff; color: var(--teal-700); font-weight: 600; font-size: 14px;
  padding: 12px 22px; border-radius: var(--r-pill); white-space: nowrap; transition: transform .2s, box-shadow .2s;
}
.navcta:hover { transform: translateY(-1px); box-shadow: 0 10px 24px -12px rgba(0,0,0,.4); }
.hamb {
  display: none; width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  align-items: center; justify-content: center; color: #fff; font-size: 18px; cursor: pointer;
}

/* menú móvil desplegable */
.mobile-menu { display: none; }
.mobile-menu.open {
  display: flex; flex-direction: column; gap: 4px; margin-top: 10px;
  background: rgba(10,47,43,.92); backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border); border-radius: var(--r-lg); padding: 14px;
}
.mobile-menu a { padding: 12px 16px; border-radius: 12px; color: var(--on-dark); font-size: 15px; }
.mobile-menu a:hover { background: rgba(255,255,255,.06); }
.mobile-menu .navcta { text-align: center; margin-top: 6px; }

/* fade-in on scroll */
.fadein { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.fadein.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .fadein { opacity: 1; transform: none; transition: none; } }

/* nav sobre fondo claro (páginas internas con hero claro) */
.nav--light { background: #fff; border: 1px solid var(--line); }
.nav--light .navlinks { color: var(--ink-soft); }
.nav--light .navlinks a:hover { color: var(--teal-600); }
.nav--light .nav__brand span { color: var(--ink); }
.nav--light .nav__brand .accent { color: var(--teal-600); }
.nav--light .navcta { background: var(--grad-cta); color: #fff; }
.nav--light .hamb { background: var(--bg-light); border-color: var(--line); color: var(--teal-600); }

/* =========================================================================
   Botones / píldoras
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 9px; justify-content: center;
  font-weight: 700; font-size: 16px; padding: 17px 30px; border-radius: var(--r-pill);
  border: none; cursor: pointer; font-family: inherit; transition: transform .2s, box-shadow .2s, background .2s;
  line-height: 1;
}
.btn:hover { transform: translateY(-2px); }
.btn--white { background: #fff; color: var(--teal-700); }
.btn--ghost { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); color: var(--on-dark); font-weight: 600; }
.btn--ghost-mint { background: rgba(95,230,211,.12); border: 1px solid rgba(95,230,211,.4); color: var(--mint-300); font-weight: 600; }
.btn--brand { background: var(--grad-cta); color: #fff; box-shadow: var(--shadow-cta); }
.btn--bright { background: var(--grad-cta-bright); color: #062018; box-shadow: 0 16px 40px -12px rgba(95,230,211,.5); }
.btn--outline-light { background: #fff; border: 1px solid #cbe6e1; color: var(--teal-600); box-shadow: 0 18px 44px -14px rgba(21,118,110,.25); }
.btn-row { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.btn-row.center { justify-content: center; }

/* píldora chip (badges, garantías) */
.chip {
  display: inline-flex; align-items: center; gap: 9px; font-size: 13px;
  padding: 8px 16px; border-radius: var(--r-pill);
}
.chip--dark { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.13); color: #cfe6e2; }
.chip--light { background: #fff; border: 1px solid var(--line); color: var(--ink-soft); }
.chip__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint-400); }
.badge {
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(255,255,255,.1); border: 1px solid var(--glass-border);
  font-size: 13px; padding: 9px 18px; border-radius: var(--r-pill);
  margin-bottom: 28px; color: #bfe3dd;
}
.badge--light { background: #eafaf7; border: 1px solid #cbe6e1; color: var(--teal-600); }

/* =========================================================================
   Cards
   ========================================================================= */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 36px; box-shadow: var(--shadow-card);
}
.card--glass {
  background: var(--glass-bg); backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border); border-radius: var(--r-lg); padding: 32px;
  box-shadow: none; color: var(--on-dark);
}
.card h3 { margin: 0 0 10px; }
.card p { color: var(--ink-mute); font-size: 15px; line-height: 1.6; margin: 0; }
.card--glass p { color: var(--on-dark-soft); }

.icon-num {
  width: 48px; height: 48px; border-radius: var(--r-sm); background: var(--grad-brand);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 20px; margin-bottom: 20px;
}
.icon-badge {
  width: 48px; height: 48px; border-radius: var(--r-sm); background: var(--grad-brand);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
}

/* =========================================================================
   Claims / estadísticas
   ========================================================================= */
.claims-strip { background: rgba(0,0,0,.14); border-top: 1px solid rgba(255,255,255,.1); position: relative; z-index: 2; }
.claims { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 34px 0; }
.stat-num {
  font-size: 40px; font-weight: 800; letter-spacing: -.02em; line-height: 1;
  background: var(--grad-mint); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label { font-size: 14px; color: var(--on-dark-soft); margin-top: 8px; }
.stat-num--brand { background: none; -webkit-text-fill-color: initial; color: var(--teal-600); }
.stat-label--dark { color: var(--ink-soft); }

/* =========================================================================
   Pasos / sistema
   ========================================================================= */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { padding: 0 26px; border-right: 1px solid var(--glass-border-soft); }
.step:first-child { padding-left: 0; }
.step:last-child { border-right: none; padding-right: 0; }
.step__n { font-family: 'Space Mono', monospace; font-size: 13px; color: var(--mint-400); margin-bottom: 14px; }
.step h4 { margin: 0 0 8px; }
.step p { font-size: 14px; color: var(--on-dark-soft); line-height: 1.55; margin: 0; }

.note {
  background: rgba(95,230,211,.1); border-left: 2px solid var(--mint-400);
  border-radius: 0 12px 12px 0; padding: 18px 22px; font-size: 15px; line-height: 1.55;
  color: #d6ece8;
}
.note--light { background: #eefaf8; color: var(--ink-soft); border-left-color: var(--teal-400); }
.note strong { color: #fff; }
.note--light strong { color: var(--teal-600); }

/* fila con icono ✓/✕ */
.pointrow { display: flex; gap: 14px; align-items: flex-start; }
.pointrow p { margin: 0; font-size: 14.5px; line-height: 1.55; color: #d6ece8; }
.pointrow strong { color: #fff; }
.mark {
  width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-weight: 700; flex-shrink: 0; font-size: 14px;
}
.mark--yes { background: rgba(95,230,211,.18); color: var(--mint-400); }
.mark--no  { background: rgba(255,120,110,.18); color: #ff9a90; }
.divider-h { height: 1px; background: rgba(255,255,255,.1); }

/* =========================================================================
   Tabla comparativa
   ========================================================================= */
.cmp { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--shadow-card-lg); }
.cmp__head, .cmp__row { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; }
.cmp__head { background: var(--teal-800); color: var(--on-dark); font-size: 14.5px; font-weight: 600; }
.cmp__head > div { padding: 20px 24px; text-align: center; color: var(--on-dark-mute); }
.cmp__head > div:first-child { text-align: left; }
.cmp__head .is-weai { background: var(--teal-600); color: #fff; }
.cmp__row { border-bottom: 1px solid var(--line-soft); font-size: 14.5px; }
.cmp__row:last-child { border-bottom: none; }
.cmp__row > div { padding: 20px 24px; text-align: center; color: var(--ink-faint); }
.cmp__row > div:first-child { text-align: left; font-weight: 600; color: var(--ink); }
.cmp__row .is-weai { font-weight: 600; color: var(--teal-600); background: #f0faf8; }

/* =========================================================================
   Formularios
   ========================================================================= */
.fld {
  width: 100%; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px; padding: 13px 14px; font-size: 14px; color: var(--on-dark);
  font-family: 'Sora', sans-serif; outline: none; transition: border-color .2s, background .2s;
}
.fld::placeholder { color: #7fa39d; }
.fld:focus { border-color: var(--mint-400); background: rgba(255,255,255,.09); }
.fld--light { background: #fff; border: 1px solid var(--line); color: var(--ink); }
.fld--light::placeholder { color: var(--ink-faint); }
.fld--light:focus { border-color: var(--teal-400); background: #fff; }
.flabel { display: block; font-size: 13px; color: var(--on-dark-mute); margin-bottom: 7px; }
.flabel--light { color: var(--ink-soft); }
.form-card {
  background: var(--glass-bg-soft); backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border); border-radius: var(--r-lg); padding: 36px;
}
.form2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-hint { font-size: 12.5px; color: #7fa39d; text-align: center; margin-top: 14px; }

/* =========================================================================
   Diagnóstico interactivo (chips)
   ========================================================================= */
.dg-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.dg-chip {
  padding: 11px 16px; border-radius: var(--r-pill); border: 1.5px solid var(--line);
  background: #fff; color: var(--ink); font-size: 14px; font-weight: 500; cursor: pointer;
  line-height: 1.3; font-family: inherit; transition: all .15s;
}
.dg-chip:hover { border-color: var(--teal-400); color: var(--teal-600); }
.dg-chip.on { background: var(--teal-600); border-color: var(--teal-600); color: #fff; }
.dg-chip.disabled { opacity: .4; cursor: not-allowed; }
.dg-result { display: none; margin-top: 20px; padding: 24px; background: var(--bg-light); border: 1px solid var(--line); border-radius: var(--r-md); }
.dg-result.show { display: block; }
.dg-rec-item {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; background: #fff;
  border: 1px solid var(--teal-400); color: var(--teal-600); border-radius: var(--r-pill);
  font-family: 'Space Mono', monospace; font-size: 13px; font-weight: 700;
}
.news-form { position: relative; }
.news-card { display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; align-items: center; padding: 40px; }
@media (max-width: 900px) { .news-card { grid-template-columns: 1fr; gap: 22px; padding: 28px; } }

/* =========================================================================
   Footer
   ========================================================================= */
.footer { background: var(--teal-900); color: #8fa8a3; padding: 64px 0 34px; position: relative; overflow: hidden; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer__brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer__brand img { height: 26px; }
.footer__brand span { font-weight: 700; font-size: 18px; color: #EAF3F1; }
.footer__brand .accent { color: var(--mint-400); }
.footer p { font-size: 14.5px; line-height: 1.6; max-width: 420px; margin: 0; }
.footer__col-title { font-size: 12px; font-weight: 600; color: var(--on-dark-faint); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 16px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; font-size: 14.5px; }
.footer__links a { transition: color .2s; }
.footer__links a:hover { color: var(--mint-300); }
.footer__bottom { padding-top: 24px; font-size: 12.5px; color: var(--on-dark-faint); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer__bottom a:hover { color: var(--mint-300); }

/* =========================================================================
   Watermarks decorativos
   ========================================================================= */
.wm { position: absolute; pointer-events: none; }
@keyframes wm-float { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(0,-22px) rotate(4deg); } }
@keyframes wm-drift { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(-18px,14px) rotate(-6deg); } }
.wmfloat { animation: wm-float 14s ease-in-out infinite; }
.wmdrift { animation: wm-drift 18s ease-in-out infinite; }

/* =========================================================================
   Hero
   ========================================================================= */
.hero { position: relative; overflow: hidden; }
.hero__inner { max-width: var(--maxw); margin: 0 auto; padding: 80px 32px 96px; position: relative; z-index: 2; }
.hero__grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 56px; align-items: center; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }

/* prosa (páginas legales / caso) */
.prose { max-width: 820px; }
.prose h2 { font-size: 28px; margin: 40px 0 14px; }
.prose h3 { font-size: 20px; margin: 28px 0 10px; }
.prose p, .prose li { font-size: 16px; line-height: 1.7; color: var(--ink-soft); }
.prose ul { padding-left: 20px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--teal-600); text-decoration: underline; }
.prose strong { color: var(--ink); }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 980px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .hero__grid,
  .split { grid-template-columns: 1fr !important; }
  .claims { grid-template-columns: 1fr 1fr !important; gap: 28px 16px; }
  .steps { grid-template-columns: 1fr !important; gap: 22px; }
  .step { border-right: none; border-left: 2px solid rgba(95,230,211,.45); padding: 2px 0 2px 16px; }
  .step--light { border-left-color: rgba(34,165,151,.45); }
  .cmp { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .cmp__head, .cmp__row { min-width: 640px; }

  .navlinks { display: none !important; }
  .navcta { display: none !important; }
  .hamb { display: flex !important; }
  .nav { padding: 12px 12px 12px 20px; }

  .section { padding: 56px 0; }
  .hero__inner { padding: 40px 20px 52px; }
  .nav-shell { padding: 16px 16px 0; }
  .wrap { padding-left: 20px; padding-right: 20px; }
  .card { padding: 24px; }
  .card--glass, .form-card { padding: 24px; }

  h1 { font-size: 34px !important; line-height: 1.08; letter-spacing: -.02em; }
  h2 { font-size: 28px !important; line-height: 1.14; }
  h3 { font-size: 19px; }
  .lead { font-size: 16px; }

  .btn { display: flex; width: 100%; text-align: center; padding: 15px 20px; }
  .btn-row .btn { width: 100%; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 560px) {
  .form2 { grid-template-columns: 1fr !important; }
  .claims { grid-template-columns: 1fr 1fr !important; }
  .footer__grid { grid-template-columns: 1fr; }
  h1 { font-size: 30px !important; }
}