/* ============================================================
   Riho Solutions — estilos
   Paleta: Azul Profundo #1E3A5F · Azul Riho #2F6BA0 ·
   Cian Luz #6CA8D6 · Tinta #1B2A3A · Marfil #FAF6EF
   Tipografía: Poppins (display) + Inter (cuerpo)
   ============================================================ */

:root{
  --navy:#1E3A5F;
  --navy-deep:#16314F;
  --blue:#2F6BA0;
  --cyan:#6CA8D6;
  --ink:#1B2A3A;
  --gray:#5b6b7b;
  --ivory:#FAF6EF;
  --white:#ffffff;
  --line:#e7eef5;
  --maxw:1140px;
  --r:14px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

h1,h2,h3{font-family:'Poppins',sans-serif;color:var(--navy);letter-spacing:-.01em;line-height:1.12;font-weight:300;}
h3{font-weight:600;}

.eyebrow{
  display:inline-block;font-family:'Poppins';font-size:.74rem;font-weight:600;
  letter-spacing:.28em;text-transform:uppercase;color:var(--blue);margin-bottom:18px;
}
.eyebrow-light{color:var(--cyan);}
.accent{color:var(--cyan);font-weight:600;}
.muted-head{color:var(--blue);}
.light{color:#fff;}

/* buttons */
.btn{
  display:inline-block;font-family:'Poppins';font-weight:500;font-size:.95rem;
  background:var(--blue);color:#fff;padding:14px 26px;border-radius:40px;
  transition:transform .18s ease, background .18s ease, box-shadow .18s ease;
  box-shadow:0 6px 20px rgba(47,107,160,.25);
}
.btn:hover{background:var(--navy);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:.85rem;box-shadow:none;}
.btn-ghost{background:transparent;color:#fff;box-shadow:none;border:1.5px solid rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px);}
.section .btn-ghost,.cta-final .btn-ghost{color:var(--navy);border-color:rgba(30,58,95,.35);}
.section .btn-ghost:hover,.cta-final .btn-ghost:hover{background:rgba(30,58,95,.05);}

/* ---------- HEADER ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px;}
.brand-logo{height:34px;width:auto;}
.nav{display:flex;align-items:center;gap:30px;}
.nav a{font-family:'Poppins';font-weight:500;font-size:.92rem;color:var(--navy);transition:color .15s;}
.nav a:hover{color:var(--blue);}
.nav .btn{color:#fff;}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:30px;height:24px;position:relative;}
.nav-toggle span{position:absolute;left:0;width:100%;height:2.5px;background:var(--navy);border-radius:2px;transition:.25s;}
.nav-toggle span:nth-child(1){top:0;}
.nav-toggle span:nth-child(2){top:10.5px;}
.nav-toggle span:nth-child(3){top:21px;}

/* ---------- HERO ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(115deg,var(--navy-deep) 0%,var(--navy) 45%,var(--blue) 100%);
}
.hero-glow{
  position:absolute;right:-18%;top:-40%;width:780px;height:780px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,168,214,.30),rgba(108,168,214,0) 62%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:40px;
  padding:108px 28px 116px;
}
.hero h1{color:#fff;font-size:3.25rem;font-weight:300;}
.hero-sub{margin-top:26px;font-size:1.12rem;color:#d7e4f1;max-width:33em;font-weight:300;}
.hero-cta{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap;}
.hero-cta.center{justify-content:center;}
.hero-art{display:flex;justify-content:center;}
.hero-dove{width:78%;max-width:340px;opacity:.96;filter:drop-shadow(0 20px 40px rgba(0,0,0,.25));}

/* ---------- SECTIONS ---------- */
.section{padding:104px 0;}
.section-ivory{background:var(--ivory);}
.section-title{font-size:2.3rem;margin-bottom:0;}
.eyebrow + .section-title{margin-top:0;}
.section-lead{margin-top:22px;max-width:46em;color:var(--gray);font-size:1.08rem;}

/* features (cómo trabajamos) */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:54px;}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;transition:transform .2s, box-shadow .2s;}
.feature:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(30,58,95,.08);}
.feature-line{display:block;width:42px;height:3px;border-radius:2px;background:var(--cyan);margin-bottom:22px;}
.feature h3{font-size:1.2rem;margin-bottom:10px;}
.feature p{color:var(--gray);font-size:.98rem;}

/* servicios */
.services{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:54px;}
.service{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:36px 34px;transition:transform .2s, box-shadow .2s;}
.service:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(30,58,95,.08);}
.service h3{font-size:1.26rem;margin-bottom:12px;}
.service p{color:var(--gray);}

/* proyectos */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:54px;}
.project{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:30px 28px;transition:transform .2s, box-shadow .2s, border-color .2s;
}
.project:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(30,58,95,.10);border-color:var(--cyan);}
.project-top{margin-bottom:18px;}
.project-tag{font-family:'Poppins';font-size:.68rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue);background:rgba(108,168,214,.14);padding:5px 12px;border-radius:30px;}
.project h3{font-size:1.12rem;line-height:1.3;margin-bottom:12px;}
.project p{color:var(--gray);font-size:.94rem;flex:1;}
.project-link{margin-top:18px;font-family:'Poppins';font-weight:500;font-size:.86rem;color:var(--blue);}

/* nosotros band */
.section-navy{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--navy-deep),var(--navy) 70%);}
.band-glow{position:absolute;left:-10%;bottom:-60%;width:680px;height:680px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,168,214,.22),rgba(108,168,214,0) 60%);}
.nosotros-grid{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start;}
.nosotros-text p{color:#cfe0ef;font-size:1.06rem;margin-bottom:18px;font-weight:300;}
.nosotros-text p:last-child{margin-bottom:0;}

/* por qué */
.reasons{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:54px;}
.reason{border-top:3px solid var(--cyan);padding-top:20px;}
.reason h3{font-size:1.08rem;margin-bottom:8px;}
.reason p{color:var(--gray);font-size:.94rem;}

/* CTA final */
.cta-final{position:relative;overflow:hidden;background:var(--ivory);padding:96px 0;text-align:center;}
.cta-glow{position:absolute;left:50%;top:-50%;transform:translateX(-50%);width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,168,214,.18),rgba(108,168,214,0) 60%);}
.cta-inner{position:relative;}
.cta-final h2{font-size:2.35rem;}
.cta-final p{margin:18px auto 0;max-width:34em;color:var(--gray);font-size:1.1rem;}

/* footer */
.site-footer{background:var(--navy-deep);color:#cfe0ef;padding:64px 0 30px;}
.footer-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.footer-logo{height:40px;margin-bottom:14px;}
.footer-tag{color:#9fc0df;font-weight:300;}
.footer-contact{text-align:right;}
.footer-contact p{margin-bottom:6px;font-size:.95rem;}
.footer-contact a:hover{color:#fff;}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:44px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  font-size:.82rem;color:#7f99b4;}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- RESPONSIVE ---------- */
@media (max-width:880px){
  .nav{
    position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;gap:0;
    padding:8px 0 18px;border-bottom:1px solid var(--line);transform:translateY(-130%);
    transition:transform .3s ease;box-shadow:0 18px 30px rgba(0,0,0,.06);
  }
  .nav.open{transform:translateY(0);}
  .nav a{width:100%;padding:14px 28px;}
  .nav .btn{margin:10px 28px 0;text-align:center;}
  .nav-toggle{display:block;}
  .hero-grid{grid-template-columns:1fr;padding:72px 28px 80px;}
  .hero h1{font-size:2.4rem;}
  .hero-art{display:none;}
  .cards-3,.services,.projects,.reasons,.nosotros-grid{grid-template-columns:1fr;}
  .section{padding:74px 0;}
  .section-title{font-size:1.85rem;}
  .footer-contact{text-align:left;}
}
@media (max-width:520px){
  .hero h1{font-size:2rem;}
  .container{padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
}