/* =========================================================
   Merca y Publicidad — estilos del sitio público
   Paleta clara y profesional · Plus Jakarta Sans + Inter
   ========================================================= */
:root{
  --bg:#f6f7fb;
  --surface:#ffffff;
  --surface-2:#eef1f8;
  --ink:#121829;
  --ink-soft:#3a4256;
  --muted:#697288;
  --line:#e6e9f2;
  --line-2:#d6dae8;

  --primary:#4f46e5;
  --primary-700:#4338ca;
  --primary-50:#eef0fe;
  --coral:#ff6a3d;
  --teal:#0ea5a4;
  --pink:#ec4899;
  --wa:#25d366;
  --wa-ink:#0b3d22;

  --brand-rule:linear-gradient(90deg,var(--pink),var(--coral) 35%,var(--primary) 70%,var(--teal));

  --r-sm:10px; --r:14px; --r-lg:20px; --r-xl:28px;
  --shadow-sm:0 2px 10px rgba(18,24,41,.05);
  --shadow:0 12px 34px -16px rgba(18,24,41,.22);
  --shadow-lg:0 28px 60px -28px rgba(18,24,41,.3);
  --maxw:1160px;

  --fd:"Plus Jakarta Sans",system-ui,-apple-system,sans-serif;
  --fb:"Inter",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink-soft);
  font-family:var(--fb);font-size:17px;line-height:1.65;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--fd);color:var(--ink);margin:0;line-height:1.12;font-weight:800;letter-spacing:-.02em}
p{margin:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:86px 0}
.bg-surface{background:var(--surface)}
.bg-soft{background:var(--surface-2)}

/* ---------- shared bits ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--fd);font-weight:700;font-size:13px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--primary);
}
.eyebrow::before{content:"";width:24px;height:3px;border-radius:3px;background:var(--brand-rule)}
.sec-head{max-width:660px;margin:0 auto 52px;text-align:center}
.sec-head .eyebrow{margin-bottom:16px}
.sec-head h2{font-size:clamp(30px,5vw,46px);margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:18px}
.text-grad{background:var(--brand-rule);-webkit-background-clip:text;background-clip:text;color:transparent}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--fd);font-weight:700;font-size:16px;
  padding:13px 22px;border-radius:999px;cursor:pointer;border:1.5px solid transparent;
  transition:transform .16s,box-shadow .22s,background .2s,border-color .2s,color .2s;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px -12px rgba(79,70,229,.6)}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-2px)}
.btn-wa{background:var(--wa);color:var(--wa-ink);box-shadow:0 12px 24px -12px rgba(37,211,102,.55)}
.btn-wa:hover{transform:translateY(-2px);filter:brightness(1.03)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:10px 16px;font-size:15px}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:16px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .logo{width:42px;height:42px;border-radius:11px;object-fit:cover;background:#0b0e1a;box-shadow:var(--shadow-sm)}
.brand .bn{font-family:var(--fd);font-weight:800;font-size:19px;color:var(--ink);letter-spacing:-.02em;line-height:1.05}
.brand .bn small{display:block;font-family:var(--fb);font-weight:500;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{font-family:var(--fd);font-weight:600;font-size:15.5px;color:var(--ink-soft);padding:9px 13px;border-radius:9px;transition:color .18s,background .18s}
.nav a:hover{color:var(--primary);background:var(--primary-50)}
.hdr-cta{margin-left:6px}
.menu-btn{display:none;margin-left:auto;width:46px;height:46px;border-radius:12px;border:1.5px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;align-items:center;justify-content:center}
.menu-btn svg{width:24px;height:24px}

@media(max-width:920px){
  .nav{
    position:fixed;left:0;right:0;top:74px;flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--surface);border-bottom:1px solid var(--line);padding:8px 16px 18px;
    transform:translateY(-130%);transition:transform .3s cubic-bezier(.4,1.3,.5,1);box-shadow:var(--shadow)
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:14px 12px;font-size:18px;border-bottom:1px solid var(--line)}
  .nav .hdr-cta{margin:14px 0 0;justify-content:center}
  .hdr-cta.desk{display:none}
  .menu-btn{display:inline-flex}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:74px 0 80px}
.hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
   radial-gradient(46vw 46vw at 88% -10%,rgba(255,106,61,.12),transparent 60%),
   radial-gradient(40vw 40vw at -6% 4%,rgba(79,70,229,.12),transparent 60%),
   radial-gradient(50vw 40vw at 100% 100%,rgba(14,165,164,.10),transparent 60%)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(38px,6.6vw,68px);margin:18px 0 18px;letter-spacing:-.03em}
.hero .lead{font-size:clamp(17px,2.2vw,20px);color:var(--muted);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:13px}
.hero-stats{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap}
.hero-stats b{display:block;font-family:var(--fd);font-size:32px;color:var(--ink);line-height:1}
.hero-stats span{font-size:13.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.hero-visual{display:flex;justify-content:center;position:relative}
.hero-card{position:relative;width:min(420px,86vw);background:#0b0e1a;border-radius:var(--r-xl);
  padding:30px;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.06)}
.hero-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;
  background:var(--brand-rule);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:.7;pointer-events:none}
.hero-card img{border-radius:var(--r-lg);width:100%}
.hero-badge{position:absolute;background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:11px 15px;box-shadow:var(--shadow);font-family:var(--fd);font-weight:700;font-size:14px;color:var(--ink);display:flex;align-items:center;gap:9px}
.hero-badge i{width:9px;height:9px;border-radius:50%}
.hero-badge.b1{top:18px;left:-14px;animation:floaty 5s ease-in-out infinite}
.hero-badge.b2{bottom:24px;right:-16px;animation:floaty 6s ease-in-out infinite .6s}
@keyframes floaty{0%,100%{transform:translateY(-7px)}50%{transform:translateY(7px)}}

@media(max-width:880px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-cta,.hero-stats{justify-content:center}
  .eyebrow{justify-content:center}
  .hero-visual{order:-1}
}

/* ---------- trust strip ---------- */
.strip{border-block:1px solid var(--line);background:var(--surface)}
.strip .row{display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:center;padding:18px 0}
.strip span{display:flex;align-items:center;gap:9px;font-family:var(--fd);font-weight:600;font-size:14.5px;color:var(--ink-soft)}
.strip span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--primary)}

/* ---------- cards grid ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:920px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.grid-3,.grid-2{grid-template-columns:1fr}.section{padding:62px 0}}

.s-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  display:flex;flex-direction:column;gap:13px;transition:transform .22s,box-shadow .22s,border-color .22s}
.s-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--line-2)}
.s-card .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--primary-50);color:var(--primary)}
.s-card .ic svg{width:27px;height:27px}
.s-card h3{font-size:21px}
.s-card p{color:var(--muted);font-size:15.5px}
.s-card ul{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.s-card li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft)}
.s-card li svg{width:17px;height:17px;color:var(--teal);flex:none;margin-top:3px}
.s-card .foot{margin-top:auto;padding-top:8px}

/* ---------- courses ---------- */
.course{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .22s,box-shadow .22s}
.course:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.course .top{padding:22px 24px 20px;border-bottom:1px solid var(--line);position:relative}
.course .top .bar{position:absolute;inset:0 0 auto 0;height:5px}
.course .tag{display:inline-block;font-family:var(--fd);font-weight:700;font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;color:#fff;padding:5px 12px;border-radius:999px;margin-bottom:12px}
.course h3{font-size:23px}
.course .meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}
.course .meta span{font-size:12.5px;color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:5px 11px}
.course .body{padding:22px 24px;display:flex;flex-direction:column;gap:15px;flex:1}
.course .body>p{color:var(--muted);font-size:15.5px}
.course .price{font-family:var(--fd);font-weight:800;font-size:27px;color:var(--ink)}
.course .price small{font-size:13px;color:var(--muted);font-weight:600;margin-left:4px}
.course .actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}
.course .actions .btn{flex:1;min-width:135px}

.beca{display:inline-flex;align-items:center;gap:9px;margin-top:16px;background:var(--primary-50);
  border:1px solid var(--line-2);border-radius:999px;padding:8px 16px;font-size:14px;color:var(--ink-soft)}
.beca b{color:var(--primary)}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
@media(max-width:880px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;position:relative}
.step .n{font-family:var(--fd);font-weight:800;font-size:15px;width:40px;height:40px;border-radius:11px;
  display:grid;place-items:center;background:var(--ink);color:#fff;margin-bottom:14px}
.step h4{font-size:18px;margin-bottom:7px}
.step p{font-size:14.5px;color:var(--muted)}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media(max-width:880px){.about-grid{grid-template-columns:1fr;gap:32px}}
.about-grid .lead-p{color:var(--muted);font-size:18px;margin:16px 0 22px}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.stat b{font-family:var(--fd);font-weight:800;font-size:34px;color:var(--primary);line-height:1;display:block}
.stat span{font-size:14px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-family:var(--fd);font-weight:700;
  font-size:17px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .chev{width:22px;height:22px;flex:none;color:var(--primary);transition:transform .25s}
.faq[open] summary .chev{transform:rotate(180deg)}
.faq .ans{padding:0 22px 18px;color:var(--muted);font-size:15.5px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px;align-items:start}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr;gap:30px}}
.cinfo{display:flex;flex-direction:column;gap:18px}
.citem{display:flex;gap:14px;align-items:flex-start}
.citem .ci{width:46px;height:46px;border-radius:13px;flex:none;display:grid;place-items:center;background:var(--primary-50);color:var(--primary)}
.citem .ci svg{width:22px;height:22px}
.citem h4{font-size:16px}
.citem p,.citem a{color:var(--muted);font-size:15.5px}
.citem a:hover{color:var(--primary)}
.form{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-sm)}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:520px){.form .row2{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:15px}
.field label{font-family:var(--fd);font-weight:600;font-size:13.5px;color:var(--ink-soft)}
.field input,.field select,.field textarea{
  font-family:var(--fb);font-size:16px;color:var(--ink);background:var(--bg);
  border:1.5px solid var(--line-2);border-radius:11px;padding:12px 14px;transition:border-color .18s,box-shadow .18s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.16)}
.field textarea{resize:vertical;min-height:108px}
.form .mini{font-size:13px;color:var(--muted);text-align:center;margin-top:12px}
.form .mini button{background:none;border:none;color:var(--primary);cursor:pointer;font-size:13px;padding:0;font-family:var(--fb)}

/* ---------- footer ---------- */
footer{background:#0d1020;color:#c7cbdb;padding:56px 0 28px}
footer .fg{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;margin-bottom:36px}
@media(max-width:780px){footer .fg{grid-template-columns:1fr 1fr}.fbrand{grid-column:1/-1}}
@media(max-width:480px){footer .fg{grid-template-columns:1fr}}
.fbrand .flogo{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.fbrand .flogo img{width:44px;height:44px;border-radius:11px}
.fbrand .flogo b{font-family:var(--fd);font-weight:800;font-size:19px;color:#fff}
.fbrand p{color:#9aa0b6;font-size:15px;max-width:330px}
.fsoc{display:flex;gap:10px;margin-top:16px}
.fsoc a{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.06);transition:background .2s,transform .2s}
.fsoc a:hover{background:var(--primary);transform:translateY(-3px)}
.fsoc svg{width:19px;height:19px;color:#fff}
footer h4{font-family:var(--fd);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:#fff;margin-bottom:15px}
footer .fcol a,footer .fcol button{display:block;background:none;border:none;text-align:left;padding:0;cursor:pointer;
  color:#aeb4ca;font-size:15px;font-family:var(--fb);margin-bottom:11px;transition:color .18s}
footer .fcol a:hover,footer .fcol button:hover{color:#fff}
.fbot{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:#7b8199;font-size:13.5px}
.fbot .ll{display:flex;gap:18px;flex-wrap:wrap}
.fbot button{background:none;border:none;color:#7b8199;cursor:pointer;font-size:13.5px;font-family:var(--fb)}
.fbot button:hover{color:#fff}

/* ---------- floating WhatsApp ---------- */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;
  background:var(--wa);display:grid;place-items:center;box-shadow:0 14px 30px -8px rgba(37,211,102,.6);animation:wp 2.6s infinite}
.wa-float svg{width:30px;height:30px;color:#fff}
@keyframes wp{0%{box-shadow:0 0 0 0 rgba(37,211,102,.5)}70%{box-shadow:0 0 0 16px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}

/* ---------- modal ---------- */
.ov{position:fixed;inset:0;z-index:100;background:rgba(18,24,41,.55);backdrop-filter:blur(5px);
  display:none;align-items:flex-start;justify-content:center;padding:24px 16px;overflow-y:auto}
.ov.open{display:flex}
.modal{background:var(--surface);border-radius:var(--r-xl);width:100%;max-width:620px;margin:auto;
  box-shadow:var(--shadow-lg);overflow:hidden;animation:mIn .28s cubic-bezier(.4,1.25,.5,1)}
@keyframes mIn{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}
.modal .mhead{padding:26px 28px;position:relative;border-bottom:1px solid var(--line)}
.modal .mhead .bar{position:absolute;inset:0 0 auto 0;height:5px}
.modal .mhead h3{font-size:26px;padding-right:42px}
.modal .mhead .sub{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.modal .mhead .sub span{font-size:12.5px;color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 11px}
.mclose{position:absolute;top:20px;right:20px;width:38px;height:38px;border-radius:11px;border:1px solid var(--line-2);
  background:var(--surface);color:var(--ink);cursor:pointer;display:grid;place-items:center}
.mclose:hover{background:var(--surface-2)}
.mclose svg{width:20px;height:20px}
.mbody{padding:22px 28px;max-height:58vh;overflow-y:auto}
.mlist{display:flex;flex-direction:column;gap:11px}
.mitem{display:flex;gap:14px;background:var(--surface-2);border:1px solid var(--line);border-left-width:4px;border-radius:13px;padding:14px 15px}
.mnum{font-family:var(--fd);font-weight:800;font-size:17px;width:36px;height:36px;flex:none;border-radius:10px;display:grid;place-items:center;color:#fff}
.mtxt h4{font-size:17px;margin-bottom:4px}
.mtxt h4 em{font-style:normal;font-weight:600;font-size:12.5px;color:var(--muted);margin-left:8px}
.mtxt p{font-size:14.5px;color:var(--muted);line-height:1.5}
.mfoot{padding:20px 28px;border-top:1px solid var(--line);display:flex;gap:11px;flex-wrap:wrap}
.mfoot .btn{flex:1;min-width:150px}
.legal h4{font-size:18px;margin:18px 0 8px}
.legal h4:first-child{margin-top:0}
.legal p{font-size:15px;color:var(--muted);margin-bottom:10px}
.legal ul{font-size:15px;color:var(--muted);padding-left:20px;margin:0 0 12px}
.legal li{margin-bottom:6px}

/* ---------- reveal & a11y ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}