/* ==========================================================================
   CONTATECH — Landing (basado en ATLAS Design System)
   ========================================================================== */

:root {
  /* Marca */
  --brand-50:#e8f7fb; --brand-100:#cdeef6; --brand-200:#a6e1ef;
  --brand-400:#46c7e0; --brand-500:#22b8d6; --brand-600:#1aa0bc;
  --brand-700:#147f96; --brand-800:#0f5e70;
  --brand-soft:rgba(34,184,214,.10); --brand-ring:rgba(34,184,214,.18);

  /* Dinero / semántico */
  --money-500:#10b981; --money-600:#059669; --money-700:#047857;
  --money-soft:rgba(5,150,105,.10);

  /* Tinta / neutros */
  --ink-900:#0c1b2a; --ink-800:#13283c; --ink-700:#22384c;
  --ink-600:#475a6e; --ink-500:#6b7e92; --ink-400:#97a6b5;

  /* Superficies */
  --paper:#f4f8fb; --surface:#ffffff; --surface-2:#f7fafc;
  --hairline:#e3ebf1; --hairline-2:#eaf1f6; --line-strong:#d2dde6;

  /* Oscuro / nav */
  --nav-bg:#10243b; --nav-bg-2:#16314f;

  /* WhatsApp */
  --wa:#25d366; --wa-dark:#1da851;

  /* Tipografía */
  --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;

  /* Radios */
  --radius-sm:.375rem; --radius-base:.5rem; --radius-md:.625rem;
  --radius-lg:.75rem; --radius-xl:.875rem; --radius-2xl:1.125rem; --radius-full:9999px;

  /* Sombras */
  --shadow-sm:0 1px 2px rgba(11,18,32,.04),0 1px 3px rgba(11,18,32,.06);
  --shadow-base:0 1px 3px rgba(11,18,32,.05),0 4px 12px rgba(11,18,32,.05);
  --shadow-md:0 2px 6px rgba(11,18,32,.06),0 10px 24px rgba(11,18,32,.07);
  --shadow-lg:0 8px 24px rgba(11,18,32,.08),0 18px 48px rgba(11,18,32,.10);
  --shadow-xl:0 24px 60px rgba(11,18,32,.16);
  --shadow-brand:0 6px 18px rgba(34,184,214,.30);

  --gradient-primary:linear-gradient(135deg,var(--brand-600) 0%,var(--brand-500) 100%);
  --gradient-dark:linear-gradient(160deg,#16314f 0%,#10243b 100%);

  --ease:200ms cubic-bezier(.4,0,.2,1);
  --container:1160px;
}

/* ---------- Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink-800);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3{color:var(--ink-900);line-height:1.15;letter-spacing:-.02em;font-weight:800}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2rem)}
.container--narrow{max-width:780px}
.grad-text{background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:inherit;font-weight:600;font-size:.95rem;line-height:1;
  padding:.72rem 1.25rem;border-radius:var(--radius-lg);border:1.5px solid transparent;
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn--sm{padding:.55rem .95rem;font-size:.875rem}
.btn--lg{padding:.9rem 1.6rem;font-size:1.02rem}
.btn--block{width:100%}

.btn--primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-brand)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(34,184,214,.40)}

.btn--outline{background:var(--surface);color:var(--brand-700);border-color:var(--line-strong)}
.btn--outline:hover{border-color:var(--brand-500);color:var(--brand-600);box-shadow:var(--shadow-sm)}

.btn--light{background:#fff;color:var(--brand-700)}
.btn--light:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

.btn--wa{background:var(--wa);color:#fff}
.btn--wa:hover{background:var(--wa-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,211,102,.35)}

/* ---------- Navbar ---------- */
.nav{
  position:sticky;top:0;z-index:300;
  background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hairline);
}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.6rem}
.brand__icon{width:40px;height:40px;object-fit:contain}
.brand__name{font-weight:800;font-size:1.2rem;letter-spacing:-.01em;color:var(--ink-900)}
.brand__accent{color:var(--brand-600)}
.nav__links{display:flex;align-items:center;gap:1.9rem}
.nav__links a{font-size:.94rem;font-weight:500;color:var(--ink-600);transition:color var(--ease)}
.nav__links a:hover{color:var(--brand-600)}
.nav__links .nav__cta{color:#fff}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav__toggle span{width:24px;height:2px;background:var(--ink-800);border-radius:2px;transition:var(--ease)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(3rem,7vw,5.5rem) 0 clamp(3.5rem,7vw,6rem)}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 55% at 78% 12%,var(--brand-soft) 0%,transparent 60%),
    radial-gradient(50% 45% at 8% 4%,rgba(5,150,105,.06) 0%,transparent 55%);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,4vw,3.5rem);align-items:center}
.hero__title{font-size:clamp(2.4rem,5.2vw,3.9rem);letter-spacing:-.03em;margin:.9rem 0 1.1rem}
.hero__sub{font-size:clamp(1.02rem,1.6vw,1.2rem);color:var(--ink-600);max-width:38ch}
.hero__sub strong{color:var(--ink-800);font-weight:600}
.hero__cta{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.8rem 0 1.4rem}
.hero__trust{display:flex;flex-wrap:wrap;gap:1.1rem;color:var(--ink-600);font-size:.9rem;font-weight:500}
.hero__trust li{display:flex;align-items:center;gap:.4rem}

.badge{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--brand-soft);color:var(--brand-700);
  font-size:.82rem;font-weight:600;padding:.4rem .8rem;border-radius:var(--radius-full);
  border:1px solid var(--brand-ring);
}
.badge__dot{width:8px;height:8px;border-radius:50%;background:var(--brand-500);box-shadow:0 0 0 4px var(--brand-soft);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}

.ic-check{width:18px;height:18px;fill:var(--money-600);flex:none}

/* Hero visual (mock app) */
.hero__visual{position:relative}
.appcard{
  background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-2xl);
  box-shadow:var(--shadow-xl);overflow:hidden;transform:rotate(.4deg);
}
.appcard__head{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1.1rem;background:var(--gradient-dark)}
.appcard__dots{display:flex;gap:6px}
.appcard__dots span{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.28)}
.appcard__sync{display:inline-flex;align-items:center;gap:.45rem;color:#dff7ee;font-size:.78rem;font-weight:600}
.pulse{width:9px;height:9px;border-radius:50%;background:var(--money-500);box-shadow:0 0 0 0 rgba(16,185,129,.6);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(16,185,129,.55)}70%{box-shadow:0 0 0 10px rgba(16,185,129,0)}100%{box-shadow:0 0 0 0 rgba(16,185,129,0)}}
.appcard__body{padding:1.15rem 1.25rem 1.35rem}
.appcard__stat{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}
.appcard__stat-label{color:var(--ink-500);font-size:.8rem;font-weight:500}
.appcard__stat-num{font-size:1.9rem;font-weight:800;color:var(--ink-900);letter-spacing:-.02em}
.appcard__badge-ok{display:inline-flex;align-items:center;gap:.35rem;background:var(--money-soft);color:var(--money-700);font-size:.78rem;font-weight:700;padding:.35rem .65rem;border-radius:var(--radius-full)}
.appcard__list{display:flex;flex-direction:column;gap:.55rem}
.appcard__list li{display:flex;align-items:center;gap:.6rem;font-size:.82rem;color:var(--ink-700);background:var(--surface-2);border:1px solid var(--hairline-2);padding:.55rem .7rem;border-radius:var(--radius-md)}
.appcard__list b{margin-left:auto;color:var(--ink-900);font-weight:700}
.appcard__list .ok{color:var(--money-600);font-style:normal;font-weight:800}
.dot{width:9px;height:9px;border-radius:3px;flex:none}
.dot--in{background:var(--brand-400)}
.dot--out{background:var(--money-500)}
.appcard__foot{display:flex;align-items:center;justify-content:space-between;margin-top:1rem;font-size:.76rem;color:var(--ink-500)}
.appcard__auto{background:var(--brand-soft);color:var(--brand-700);font-weight:700;padding:.25rem .6rem;border-radius:var(--radius-full)}

/* ---------- Franja de confianza ---------- */
.strip{border-block:1px solid var(--hairline);background:var(--surface)}
.strip__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.5rem 1.4rem;padding:1.1rem 0;text-align:center}
.strip__inner>span{color:var(--ink-500);font-size:.85rem;font-weight:500}
.strip__items{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .9rem;font-weight:700;color:var(--ink-700);font-size:.9rem}
.strip__items .sep{color:var(--line-strong)}

/* ---------- Secciones ---------- */
.section{padding:clamp(3.2rem,7vw,5.5rem) 0}
.section--alt{background:var(--surface)}
.section__head{max-width:640px;margin:0 auto clamp(2rem,4vw,3rem);text-align:center}
.eyebrow{display:inline-block;color:var(--brand-600);font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.6rem}
.section__title{font-size:clamp(1.7rem,3.4vw,2.5rem)}
.section__lead{color:var(--ink-600);font-size:1.05rem;margin-top:.7rem}

.grid{display:grid;gap:1.3rem}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}

/* Tarjetas de beneficios */
.card{
  background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-xl);
  padding:1.6rem 1.4rem;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.section--alt .card{background:var(--surface-2)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-200)}
.card h3{font-size:1.12rem;margin:.9rem 0 .5rem}
.card p{color:var(--ink-600);font-size:.94rem}
.card__ic,.who__ic{
  width:52px;height:52px;border-radius:var(--radius-lg);
  display:grid;place-items:center;
}
.card__ic svg,.who__ic svg{width:26px;height:26px}
.ic-brand{background:var(--brand-soft);color:var(--brand-600)}
.ic-money{background:var(--money-soft);color:var(--money-600)}

/* Cómo funciona */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;counter-reset:step}
.step{position:relative;background:var(--paper);border:1px solid var(--hairline);border-radius:var(--radius-xl);padding:1.9rem 1.5rem 1.5rem}
.section--alt .step{background:var(--paper)}
.step__num{
  position:absolute;top:-18px;left:1.5rem;width:44px;height:44px;border-radius:var(--radius-lg);
  background:var(--gradient-primary);color:#fff;font-weight:800;font-size:1.2rem;
  display:grid;place-items:center;box-shadow:var(--shadow-brand);
}
.step h3{font-size:1.12rem;margin:.9rem 0 .45rem}
.step p{color:var(--ink-600);font-size:.94rem}

/* Para quién */
.who{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-xl);padding:1.7rem 1.5rem;transition:transform var(--ease),box-shadow var(--ease)}
.who:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.who h3{font-size:1.15rem;margin:.9rem 0 .5rem}
.who p{color:var(--ink-600);font-size:.95rem}

/* ---------- Precios ---------- */
.pricing{align-items:stretch}
.plan{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-2xl);
  padding:2rem 1.6rem;transition:transform var(--ease),box-shadow var(--ease)
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.plan--featured{border:2px solid var(--brand-500);box-shadow:var(--shadow-lg)}
.plan__tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--gradient-primary);color:#fff;font-size:.75rem;font-weight:700;padding:.35rem .9rem;border-radius:var(--radius-full);box-shadow:var(--shadow-brand)}
.plan__name{font-size:1.3rem}
.plan__desc{color:var(--ink-500);font-size:.9rem;margin:.35rem 0 1.1rem}
.plan__price{font-size:2.9rem;font-weight:800;color:var(--ink-900);letter-spacing:-.03em;line-height:1;margin-bottom:1.3rem}
.plan__price--custom{font-size:1.7rem}
.plan__cur{font-size:1.4rem;vertical-align:super;margin-right:.1rem;color:var(--ink-600)}
.plan__per{font-size:.95rem;font-weight:600;color:var(--ink-500)}
.plan__feats{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1.6rem;flex:1}
.plan__feats li{position:relative;padding-left:1.7rem;color:var(--ink-700);font-size:.93rem}
.plan__feats li::before{content:"";position:absolute;left:0;top:.35em;width:16px;height:16px;border-radius:50%;background:var(--money-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%23059669' d='M7.5 13.5l-3-3 1.4-1.4 1.6 1.6 5.1-5.1L14 7z'/%3E%3C/svg%3E") center/14px no-repeat}
.pricing__note{text-align:center;color:var(--ink-500);font-size:.88rem;margin-top:1.6rem}
.pricing__note a{color:var(--brand-600);font-weight:600;text-decoration:underline}

/* Precio destacado (descargador) */
.price-tag{display:inline-flex;align-items:baseline;gap:.05rem;font-size:3.2rem;font-weight:800;color:var(--ink-900);letter-spacing:-.03em;margin:1.5rem 0 .3rem}
.price-tag__cur{font-size:1.7rem;color:var(--brand-600);align-self:flex-start;margin-top:.35rem}
.price-tag__per{font-size:1.05rem;font-weight:600;color:var(--ink-500)}
.price-trial{color:var(--money-700);font-size:.95rem;font-weight:600;margin:0 0 1.2rem}
.price-trial strong{color:var(--money-600)}

/* ---------- Tienda de plantillas ---------- */
.store-cats{display:flex;flex-wrap:wrap;gap:.55rem;justify-content:center;margin:0 auto 2.4rem;max-width:760px}
.store-cat{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-full);padding:.45rem 1rem;font-size:.85rem;font-weight:600;color:var(--ink-600)}
.store-cat--active{background:var(--brand-soft);border-color:var(--brand-ring);color:var(--brand-700)}
.store-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem}
.product{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-xl);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.product:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-200)}
.product__thumb{height:130px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand-soft),var(--money-soft));color:var(--brand-600)}
.product__thumb svg{width:46px;height:46px}
.product__body{padding:1.3rem;display:flex;flex-direction:column;flex:1}
.product__cat{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--brand-600);margin-bottom:.45rem}
.product__title{font-size:1.06rem;margin-bottom:.4rem}
.product__desc{color:var(--ink-600);font-size:.9rem;flex:1;margin-bottom:1.1rem}
.product__foot{display:flex;align-items:center;justify-content:space-between;gap:.8rem}
.product__price{font-size:1.5rem;font-weight:800;color:var(--ink-900);letter-spacing:-.02em}
.product__price small{font-size:.8rem;color:var(--ink-500);font-weight:600}
.store-help{text-align:center;margin-top:2.4rem;color:var(--ink-600)}
.store-help a{color:var(--brand-600);font-weight:600;text-decoration:underline}

@media (max-width:960px){.store-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.store-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:.75rem}
.faq details{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-lg);overflow:hidden;transition:box-shadow var(--ease)}
.faq details[open]{box-shadow:var(--shadow-sm);border-color:var(--brand-200)}
.faq summary{cursor:pointer;list-style:none;padding:1.05rem 1.3rem;font-weight:600;color:var(--ink-800);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;font-weight:400;color:var(--brand-500);transition:transform var(--ease);flex:none;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 1.3rem 1.15rem;color:var(--ink-600);font-size:.95rem}

/* ---------- CTA final ---------- */
.cta{background:var(--gradient-dark);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 85% 0%,rgba(34,184,214,.22) 0%,transparent 60%)}
.cta__inner{position:relative;text-align:center;padding:clamp(3rem,6vw,4.5rem) 0;max-width:680px;margin:0 auto}
.cta h2{color:#fff;font-size:clamp(1.8rem,3.6vw,2.6rem)}
.cta p{color:#c7d6e6;font-size:1.08rem;margin:.9rem 0 1.8rem}
.cta__btns{display:flex;flex-wrap:wrap;gap:.9rem;justify-content:center}

/* ---------- Pie ---------- */
.footer{background:var(--ink-900);color:#aeb9c7}
.footer__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.6rem;padding:2.6rem 0}
.footer__brand{display:flex;align-items:center;gap:.8rem}
.footer__brand img{background:#fff;border-radius:var(--radius-md);padding:4px}
.footer__name{color:#fff;font-weight:800;font-size:1.1rem;letter-spacing:-.01em}
.footer__tag{font-size:.86rem;color:#8798aa}
.footer__nav{display:flex;flex-wrap:wrap;gap:1.3rem}
.footer__nav a{font-size:.92rem;color:#aeb9c7;transition:color var(--ease)}
.footer__nav a:hover{color:#fff}
.footer__bar{border-top:1px solid rgba(255,255,255,.08)}
.footer__bar-inner{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:space-between;padding:1.1rem 0;font-size:.83rem;color:#7d8da0}
.footer__bar-inner a{color:#9fb0c2}
.footer__bar-inner a:hover{color:#fff;text-decoration:underline}

/* ---------- WhatsApp flotante ---------- */
.wa-float{
  position:fixed;right:20px;bottom:20px;z-index:400;
  width:58px;height:58px;border-radius:50%;
  background:var(--wa);color:#fff;display:grid;place-items:center;
  box-shadow:0 8px 24px rgba(37,211,102,.45);
  transition:transform var(--ease),box-shadow var(--ease);
  animation:waIn .4s ease both;
}
.wa-float:hover{transform:scale(1.08);box-shadow:0 12px 30px rgba(37,211,102,.55)}
@keyframes waIn{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}

/* ---------- Animaciones de aparición ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:960px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .hero__inner{grid-template-columns:1fr;gap:2.5rem}
  .hero__visual{max-width:460px;margin:0 auto;width:100%}
  .hero__sub{max-width:100%}
}

@media (max-width:760px){
  .nav__links{
    position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);border-bottom:1px solid var(--hairline);
    padding:.5rem 1.2rem 1.2rem;box-shadow:var(--shadow-md);
    transform:translateY(-140%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  }
  .nav__links.open{transform:translateY(0)}
  .nav__links a{padding:.85rem .2rem;border-bottom:1px solid var(--hairline-2)}
  .nav__links .nav__cta{margin-top:.7rem;border-bottom:0;justify-content:center}
  .nav__toggle{display:flex}
  .nav__toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav__toggle.open span:nth-child(2){opacity:0}
  .nav__toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .grid--3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:1.8rem}
  .plan--featured{order:-1}
  .footer__inner{flex-direction:column;align-items:flex-start}
}

@media (max-width:440px){
  .grid--4{grid-template-columns:1fr}
  .hero__cta .btn{width:100%}
  .cta__btns .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
}