/* ============================================================
   River Mind — sistema de diseño (dark-first)
   Fuente de verdad: DESIGN.md
   ============================================================ */

:root{
  /* Base OSCURO (marca) */
  --bg:#0a1626; --panel:#10233b; --panel-2:#16304e;
  --ink:#eef4fb; --ink-soft:#aec3dc; --muted:#7d96b3;
  --line:#1f3a5c;
  --acento:#35b7ea; --acento-deep:#1c8fce;
  --fuego:#ff6a3c; --fuego-deep:#ec5526;
  --wa:#25d366;
  --grad-1:#4fd6ec; --grad-2:#2a86cb;
  --maxread:66ch;
  --radius:16px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 12px 34px rgba(0,0,0,.28);
  --glow:0 0 0 1px color-mix(in srgb,var(--acento) 40%,transparent), 0 10px 40px color-mix(in srgb,var(--acento) 22%,transparent);
}
:root[data-theme="light"]{
  --bg:#f5f9fd; --panel:#ffffff; --panel-2:#eef4fb;
  --ink:#0b1a2c; --ink-soft:#3f5a78; --muted:#6a83a1;
  --line:#dde8f3;
  --acento:#1682c0; --acento-deep:#0f6ba0;
  --fuego:#e85a2a; --fuego-deep:#cf4a20;
  --shadow:0 1px 2px rgba(16,40,70,.06), 0 12px 30px rgba(16,40,70,.10);
  --glow:0 0 0 1px color-mix(in srgb,var(--acento) 30%,transparent), 0 10px 34px color-mix(in srgb,var(--acento) 16%,transparent);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px; line-height:1.65; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:Sora,Inter,system-ui,sans-serif;font-weight:700;line-height:1.12;margin:0;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem)}
h3{font-size:1.22rem;font-weight:600}
p{margin:0 0 1rem}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;height:auto;display:block}
ul{margin:0;padding:0;list-style:none}
.wrap{width:min(1160px,92vw);margin-inline:auto}
.lead{font-size:1.12rem;color:var(--ink-soft);max-width:var(--maxread)}
.muted{color:var(--muted)}
.center{text-align:center}
.grad-text{background:linear-gradient(100deg,var(--grad-1),var(--acento) 55%,var(--grad-2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;gap:.55ch;font-weight:600;font-size:1rem;
  padding:.82em 1.5em;border-radius:999px;cursor:pointer;border:1.5px solid transparent;
  transition:transform .15s ease, box-shadow .2s ease, background .2s ease;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn--fuego{background:var(--fuego);color:#fff;box-shadow:0 8px 24px color-mix(in srgb,var(--fuego) 34%,transparent)}
.btn--fuego:hover{background:var(--fuego-deep);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--acento);color:var(--acento)}
.btn--wa{background:var(--wa);color:#062e15}
.btn--wa:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn--sm{padding:.6em 1.1em;font-size:.92rem}

/* ---------- Header ---------- */
header.site{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:1rem;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.6rem;margin-right:auto}
.brand img{width:38px;height:38px}
.brand .name{font-family:Sora,sans-serif;font-size:1.18rem;letter-spacing:.01em}
.brand .name b{font-weight:700}
.brand .name span{font-weight:300;color:var(--ink-soft)}
nav.menu{display:flex;align-items:center;gap:1.4rem}
nav.menu a{font-size:.95rem;color:var(--ink-soft);font-weight:500}
nav.menu a:hover{color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:.6rem}
.icon-btn{background:transparent;border:1px solid var(--line);color:var(--ink-soft);width:38px;height:38px;border-radius:10px;cursor:pointer;display:grid;place-items:center;font-size:1rem}
.icon-btn:hover{border-color:var(--acento);color:var(--acento)}
.menu-toggle{display:none}

/* ---------- Secciones ---------- */
section{padding:clamp(3rem,7vw,5.5rem) 0}
.eyebrow{display:inline-flex;align-items:center;gap:.5ch;font-size:.82rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--acento);margin-bottom:.9rem}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--acento);border-radius:2px}
.section-head{max-width:720px;margin-bottom:2.4rem}
.section-head.center{margin-inline:auto}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(3.5rem,9vw,7rem) 0 clamp(3rem,7vw,5.5rem);overflow:hidden}
.hero-bg{position:absolute;inset:-4%;z-index:0;pointer-events:none;background:#0a1626 url('/assets/img/fondo.webp') center right/cover no-repeat;animation:heroZoom 30s ease-in-out infinite alternate}
.hero-bg::before{content:"";position:absolute;inset:0;background:linear-gradient(95deg,#0a1626 4%,rgba(10,22,38,.72) 42%,rgba(10,22,38,.22) 100%)}
@keyframes heroZoom{from{transform:scale(1)}to{transform:scale(1.08)}}
@media(prefers-reduced-motion:reduce){.hero-bg{animation:none}}
/* Hero siempre oscuro (fondo.webp) -> texto claro en cualquier tema */
.hero h1{color:#f3f8fd}
.hero .hero-sub{color:#c8d8ea}
.hero .hero-trust{color:#9db3cb}
.hero .hero-trust b{color:#e6eff8}
.hero .wrap{position:relative;z-index:1;max-width:900px}
.hero h1{font-size:clamp(2.2rem,5.4vw,3.9rem);margin:.4rem 0 1.1rem}
.hero-sub{font-size:clamp(1.05rem,2vw,1.28rem);color:var(--ink-soft);max-width:60ch;margin-bottom:1.8rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-bottom:1.8rem}
.hero-trust{display:flex;flex-wrap:wrap;gap:.5rem 1.3rem;font-size:.92rem;color:var(--muted)}
.hero-trust b{color:var(--ink-soft);font-weight:600}
.hero-trust span{display:inline-flex;align-items:center;gap:.45ch}
.hero-trust span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--acento)}

/* ---------- Pipeline / mecanismo ---------- */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:.8rem;counter-reset:s}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.1rem .95rem;position:relative}
.step .n{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-family:Sora;font-weight:700;font-size:.9rem;background:color-mix(in srgb,var(--acento) 18%,transparent);color:var(--acento);margin-bottom:.7rem}
.step h4{font-size:.98rem;font-family:Sora;margin-bottom:.25rem}
.step p{font-size:.86rem;color:var(--muted);margin:0}

/* ---------- Cards de servicios ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);transition:transform .18s ease,border-color .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--acento) 55%,var(--line));box-shadow:var(--glow)}
.card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.4rem;background:linear-gradient(135deg,color-mix(in srgb,var(--acento) 26%,transparent),color-mix(in srgb,var(--grad-2) 22%,transparent));margin-bottom:1rem}
.card h3{margin-bottom:.45rem}
.card p{font-size:.95rem;color:var(--ink-soft);margin-bottom:1rem}
.card .more{margin-top:auto;font-weight:600;font-size:.92rem;color:var(--acento)}
.card:hover .more{color:var(--acento-deep)}

/* ---------- Oferta / niveles ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;align-items:stretch}
.tier{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem;display:flex;flex-direction:column}
.tier--feat{border-color:color-mix(in srgb,var(--fuego) 60%,var(--line));box-shadow:var(--shadow);position:relative}
.tier--feat::before{content:"Más elegido";position:absolute;top:-12px;left:1.7rem;background:var(--fuego);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.04em;padding:.28em .8em;border-radius:999px}
.tier .t-name{font-family:Sora;font-weight:700;font-size:1.15rem}
.tier .t-price{font-family:Sora;font-weight:700;font-size:1.7rem;margin:.5rem 0 .2rem}
.tier .t-price small{font-size:.9rem;font-weight:500;color:var(--muted)}
.tier .t-desc{font-size:.9rem;color:var(--muted);margin-bottom:1rem}
.tier ul{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.3rem;font-size:.93rem;color:var(--ink-soft)}
.tier li{display:flex;gap:.6ch}
.tier li::before{content:"✓";color:var(--acento);font-weight:700}
.tier .btn{margin-top:auto;justify-content:center}

/* ---------- Industrias ---------- */
.industries{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.industry{background:linear-gradient(160deg,var(--panel),var(--panel-2));border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;display:flex;gap:1rem;align-items:flex-start}
.industry .em{font-size:1.8rem}
.industry h3{font-size:1.05rem;margin-bottom:.3rem}
.industry p{font-size:.9rem;color:var(--muted);margin:0}

/* ---------- Diferenciador / métricas ---------- */
.why{display:grid;grid-template-columns:1.1fr .9fr;gap:2.4rem;align-items:center}
.metrics{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}
.metric{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.1rem}
.metric .k{font-family:Sora;font-weight:700;font-size:1.5rem;color:var(--acento)}
.metric .l{font-size:.86rem;color:var(--muted)}

/* ---------- Autor / E-E-A-T ---------- */
.author{display:flex;gap:1.4rem;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem}
.author .ph{width:84px;height:84px;border-radius:50%;flex:none;background:linear-gradient(135deg,var(--grad-1),var(--grad-2));display:grid;place-items:center;font-family:Sora;font-weight:700;font-size:1.6rem;color:#04223a}
.author h3{margin-bottom:.2rem}
.author .role{color:var(--acento);font-weight:600;font-size:.92rem}
.author p{font-size:.95rem;color:var(--ink-soft);margin:.5rem 0 0}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--grad-2),var(--acento-deep));border-radius:calc(var(--radius) + 6px);padding:clamp(2rem,5vw,3.2rem);text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.85);max-width:56ch;margin-inline:auto}
.cta-band .hero-cta{justify-content:center;margin-top:1.4rem;margin-bottom:0}

/* ---------- Footer ---------- */
footer.site{background:var(--panel);border-top:1px solid var(--line);padding:3rem 0 2rem;color:var(--ink-soft);font-size:.94rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:1.6rem;margin-bottom:2rem}
.foot-grid h4{font-family:Sora;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:.8rem}
.foot-grid a{color:var(--ink-soft);display:block;padding:.2rem 0}
.foot-grid a:hover{color:var(--acento)}
.foot-brand .brand{margin-bottom:.8rem}
.foot-bottom{border-top:1px solid var(--line);padding-top:1.3rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.86rem;color:var(--muted)}

/* ---------- Cookie banner ---------- */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:80;max-width:560px;margin-inline:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;box-shadow:var(--shadow);display:none;gap:.9rem;align-items:center;flex-wrap:wrap}
.cookie.show{display:flex}
.cookie p{margin:0;font-size:.88rem;color:var(--ink-soft);flex:1 1 260px}
.cookie .actions{display:flex;gap:.5rem;margin-left:auto}

/* ---------- Reveal motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .steps{grid-template-columns:repeat(3,1fr)}
  .cards,.tiers,.industries{grid-template-columns:1fr 1fr}
  .why{grid-template-columns:1fr;gap:1.6rem}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  nav.menu{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;background:var(--panel);border-bottom:1px solid var(--line);padding:.5rem 6vw 1.2rem;transform:translateY(-130%);transition:transform .25s ease;box-shadow:var(--shadow)}
  nav.menu.open{transform:none}
  nav.menu a{padding:.75rem 0;width:100%;border-bottom:1px solid var(--line);font-size:1.02rem}
  .menu-toggle{display:grid}
  .header-cta{display:none}
  .steps,.cards,.tiers,.industries,.metrics,.foot-grid{grid-template-columns:1fr}
  .author{flex-direction:column;text-align:center}
  .hero-cta .btn{flex:1 1 100%;justify-content:center}
}

/* ---------- Qué incluye + FAQ (páginas internas) ---------- */
.incluye{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.incluye li{display:flex;gap:.7ch;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:.95rem 1.05rem;font-size:.95rem;color:var(--ink-soft)}
.incluye li::before{content:"✓";color:var(--acento);font-weight:700;flex:none}
.faq{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:.7rem;overflow:hidden}
.faq>summary{cursor:pointer;padding:1rem 1.2rem;font-weight:600;font-family:Sora,sans-serif;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq>summary::-webkit-details-marker{display:none}
.faq>summary::after{content:"+";color:var(--acento);font-size:1.4rem;line-height:1;flex:none}
.faq[open]>summary::after{content:"\2013"}
.faq .a{padding:0 1.2rem 1.1rem;color:var(--ink-soft);font-size:.96rem}
@media(max-width:680px){.incluye{grid-template-columns:1fr}}

/* ---------- Formulario / contacto ---------- */
.contact-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:1.8rem;align-items:start}
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow)}
form label{display:block;font-size:.9rem;font-weight:600;margin:.9rem 0 .35rem;color:var(--ink)}
form input,form select,form textarea{width:100%;font:inherit;font-size:1rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:.72rem .9rem}
form input:focus,form select:focus,form textarea:focus{outline:2px solid color-mix(in srgb,var(--acento) 35%,transparent);border-color:var(--acento)}
form textarea{min-height:120px;resize:vertical}
form .btn{margin-top:1.1rem;width:100%;justify-content:center}
.cf-turnstile{margin-top:1rem}
.contact-side{display:flex;flex-direction:column;gap:.75rem}
.contact-item{display:flex;gap:.9rem;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1rem 1.1rem}
.contact-item .ci-ic{font-size:1.3rem;line-height:1}
.contact-item h4{font-family:Sora,sans-serif;font-size:.98rem;margin:0 0 .2rem}
.contact-item a,.contact-item p{margin:0;font-size:.92rem;color:var(--ink-soft)}
.contact-item a:hover{color:var(--acento)}
.prose{font-size:1rem;line-height:1.75}
.prose h3{margin:1.6rem 0 .5rem;font-size:1.15rem}
.prose p{color:var(--ink-soft);margin:0 0 1rem}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr}}