/* Multiservicios Libra - versión HTML5 estática responsiva */
:root{
  --industrial:#142538;
  --industrial-soft:#20364d;
  --accent:#f5c731;
  --accent-strong:#edb900;
  --ink:#172436;
  --muted:#f4f6f8;
  --muted-text:#637184;
  --border:#e3e8ee;
  --white:#fff;
  --shadow:0 12px 32px rgba(17,31,47,.10);
  --radius:9px;
  --max:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:#fff;
  font-family:Arial,"Helvetica Neue",Helvetica,sans-serif;
  line-height:1.55;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
p{margin:0}
h1,h2,h3,h4{color:inherit;line-height:1.16;margin:0;font-weight:700}
button,input,textarea{font:inherit}
.container{width:min(var(--max),calc(100% - 2rem));margin-inline:auto}
.muted-section{background:var(--muted)}
.eyebrow{
  font-size:.74rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted-text);margin-bottom:.65rem
}
.eyebrow.accent{color:var(--accent)}
.section-title{font-size:clamp(1.8rem,3.2vw,2.4rem)}
.section-lead{color:var(--muted-text);margin-top:.75rem;max-width:44rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  border-radius:5px;padding:.8rem 1.35rem;font-size:.94rem;font-weight:700;
  transition:transform .15s ease,background .2s ease,filter .2s ease,border-color .2s ease;
  border:1px solid transparent;min-height:47px
}
.btn:hover{transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--industrial)}
.btn-accent:hover{background:var(--accent-strong)}
.btn-outline{color:var(--white);border-color:rgba(255,255,255,.35);background:transparent}
.btn-outline:hover{background:rgba(255,255,255,.10)}
.btn-dark{background:var(--industrial);color:var(--white)}
.btn-dark:hover{background:var(--industrial-soft)}
.icon{
  width:1.25rem;height:1.25rem;display:inline-block;vertical-align:middle;
  stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round
}

/* Header */
.site-header{
  background:var(--industrial);color:#fff;position:sticky;top:0;z-index:100;
  border-bottom:1px solid rgba(255,255,255,.12)
}
.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.72rem}
.brand img{
  width:42px;height:42px;background:#fff;object-fit:contain;padding:2px;border-radius:4px
}
.brand-top{font-size:.86rem;font-weight:700;letter-spacing:.08em;line-height:1.18}
.brand-bottom{font-size:.72rem;color:var(--accent);font-weight:700;letter-spacing:.23em;line-height:1.2}
.desktop-nav{display:flex;align-items:center;gap:2.15rem}
.desktop-nav .nav-link{font-size:.92rem;font-weight:600;transition:color .2s}
.desktop-nav .nav-link:hover,.desktop-nav .nav-link.active{color:var(--accent)}
.desktop-nav .quote{padding:.5rem 1.05rem;min-height:auto}
.nav-toggle{
  display:none;color:#fff;background:none;border:0;padding:.4rem;cursor:pointer
}
.nav-toggle .icon{height:1.7rem;width:1.7rem}
.mobile-menu{display:none;background:var(--industrial);border-top:1px solid rgba(255,255,255,.12)}
.mobile-menu.open{display:block}
.mobile-menu-inner{display:flex;flex-direction:column;padding:.45rem 0 .7rem}
.mobile-menu a{padding:.55rem 0;font-size:.95rem;font-weight:600}
.mobile-menu .active{color:var(--accent)}

/* Hero */
.hero{
  --hero:none;
  color:#fff;background-color:var(--industrial);position:relative;isolation:isolate;overflow:hidden
}
.hero::before{
  content:"";position:absolute;inset:0;background-image:var(--hero);
  background-size:cover;background-position:center;opacity:.28;z-index:-2
}
/* Imágenes definidas desde el propio CSS: funcionan tanto al abrir index.html localmente
   como al publicar el sitio en el hosting. */
.hero-home::before{background-image:url("../img/hero-industrial.jpeg");opacity:.30}
.hero-cursos::before{background-image:url("../img/riesgos-industriales.jpeg");opacity:.25}
.hero-nosotros::before{background-image:url("../img/scaffolding-team.jpeg");opacity:.25}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,37,56,.98),rgba(20,37,56,.89) 48%,rgba(20,37,56,.35));
  z-index:-1
}
/* El contenedor ocupa el ancho original; el título conserva su ancho y queda alineado a la izquierda. */
.hero-home .hero-content{padding:5.4rem 0 6.2rem;max-width:var(--max)}
.hero-page .hero-content{padding:4.65rem 0;max-width:850px}
.hero-badge{
  display:inline-flex;align-items:center;gap:.48rem;margin-bottom:1.45rem;
  border:1px solid rgba(245,199,49,.30);background:rgba(245,199,49,.14);
  color:var(--accent);font-size:.73rem;font-weight:700;letter-spacing:.09em;
  border-radius:999px;padding:.36rem .78rem
}
.hero h1{font-size:clamp(2.35rem,5.2vw,3.72rem);max-width:720px}
.hero-page h1{font-size:clamp(2.25rem,4.5vw,3rem)}
.hero h1 span{color:var(--accent)}
.hero-text{font-size:1.08rem;color:rgba(255,255,255,.79);margin-top:1.45rem;max-width:610px}
.hero-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2.05rem}

/* Home content */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1.35rem;padding:4rem 0}
.feature-card{
  border:1px solid var(--border);border-radius:var(--radius);padding:1.55rem;
  transition:border-color .2s,box-shadow .2s;background:#fff
}
.feature-card:hover{border-color:var(--accent);box-shadow:0 8px 24px rgba(17,31,47,.06)}
.icon-box{
  width:48px;height:48px;background:rgba(245,199,49,.23);border-radius:9px;
  color:var(--industrial);display:grid;place-items:center;margin-bottom:1.05rem
}
.icon-box .icon{width:25px;height:25px}
.feature-card h3{font-size:1.08rem;margin-bottom:.5rem}
.feature-card p,.course-category p{font-size:.9rem;color:var(--muted-text)}
.catalog-preview{padding:4.7rem 0}
.section-heading{
  display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:2.3rem
}
.text-link{display:inline-flex;align-items:center;gap:.35rem;color:var(--industrial);font-weight:700;font-size:.91rem}
.text-link:hover{gap:.55rem}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.course-category{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;
  transition:border-color .2s,box-shadow .2s
}
.course-category:hover{border-color:var(--industrial);box-shadow:var(--shadow)}
.count-tag{
  display:inline-flex;background:var(--accent);color:var(--industrial);border-radius:4px;
  padding:.1rem .48rem;font-size:.73rem;font-weight:700;margin-bottom:.8rem
}
.course-category h3{font-size:1.08rem;margin-bottom:.43rem}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;padding:4.8rem 0}
.gallery-card{aspect-ratio:4/3;overflow:hidden;border-radius:var(--radius);position:relative}
.gallery-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.gallery-card:hover img{transform:scale(1.05)}
.gallery-card::after{
  content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(20,37,56,.85),transparent 60%)
}
.gallery-label{position:absolute;bottom:1rem;left:1rem;color:#fff;font-size:1.08rem;font-weight:700;z-index:1}
.clients{border-block:1px solid var(--border);padding:3.2rem 0}
.clients-title{text-align:center;margin-bottom:1.9rem}
.client-grid{display:grid;grid-template-columns:repeat(4,1fr);align-items:center;gap:2rem}
.client-grid img{margin:auto;max-height:62px;width:auto;object-fit:contain;filter:grayscale(1);transition:filter .25s}
.client-grid img:hover{filter:none}
.big-cta{background:var(--industrial);color:#fff;text-align:center;padding:4.7rem 0}
.big-cta h2{font-size:clamp(1.85rem,3.4vw,2.35rem);margin-bottom:1rem}
.big-cta p{max-width:660px;color:rgba(255,255,255,.78);margin:0 auto 1.8rem}

/* Cursos */
.category-nav{
  position:sticky;top:64px;z-index:50;border-bottom:1px solid var(--border);
  background:#fff
}
.category-scroll{display:flex;overflow:auto;gap:.5rem;padding:.78rem 0;scrollbar-width:thin}
.pill{
  flex:0 0 auto;background:var(--muted);padding:.46rem .8rem;border-radius:999px;
  font-size:.75rem;font-weight:700
}
.pill:hover{background:var(--industrial);color:#fff}
.course-listing{padding:3.8rem 0;display:flex;flex-direction:column;gap:4rem}
.course-block{scroll-margin-top:132px}
.course-block-heading{
  border-bottom:2px solid var(--accent);padding-bottom:1rem;margin-bottom:1.45rem;
  display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap
}
.course-block-heading h2{font-size:clamp(1.5rem,2.7vw,1.9rem);color:var(--industrial)}
.course-block-heading p{margin-top:.35rem;color:var(--muted-text)}
.course-total{font-size:.88rem;font-weight:700;color:var(--muted-text)}
.course-items{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem}
.course-item{
  display:flex;gap:.72rem;align-items:flex-start;border:1px solid var(--border);
  border-radius:var(--radius);padding:.85rem .95rem;font-size:.9rem;font-weight:600;
  background:#fff;transition:border-color .2s,box-shadow .2s
}
.course-item:hover{border-color:var(--industrial);box-shadow:0 5px 14px rgba(17,31,47,.06)}
.course-item .check{color:var(--accent-strong);font-size:1.2rem;line-height:1}
.secondary-cta{text-align:center;padding:3.8rem 0}
.secondary-cta h2{font-size:clamp(1.45rem,2.8vw,1.9rem);margin-bottom:.7rem}
.secondary-cta p{color:var(--muted-text);margin-bottom:1.55rem}

/* Nosotros */
.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:2.75rem;padding:4.7rem 0}
.split img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius)}
.split h2{font-size:clamp(1.8rem,3vw,2.15rem);color:var(--industrial);margin-bottom:1rem}
.split p{color:var(--muted-text)}
.mission-section{padding:4.7rem 0}
.mission-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.mission-card{background:#fff;border-radius:var(--radius);padding:2rem;border-top:4px solid var(--accent)}
.mission-card:last-child{border-top-color:var(--industrial)}
.mission-card .icon{height:40px;width:40px;color:var(--industrial);margin-bottom:1rem}
.mission-card h3{font-size:1.55rem;color:var(--industrial);margin-bottom:.75rem}
.mission-card p{color:var(--muted-text)}
.check-list{list-style:none;padding:0;margin:1.1rem 0 0;font-size:.9rem}
.check-list li{margin:.38rem 0}

/* Contacto */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;padding:3.9rem 0}
.contact-cards{display:flex;flex-direction:column;gap:1.35rem}
.contact-card{
  border:1px solid var(--border);border-radius:var(--radius);padding:1.45rem
}
.contact-title{display:flex;align-items:center;gap:.8rem;margin-bottom:.75rem}
.contact-title .icon-box{width:40px;height:40px;margin:0}
.contact-title .icon{height:20px;width:20px}
.contact-card li{list-style:none;margin:.35rem 0;color:var(--muted-text);font-size:.92rem}
.contact-card ul{padding:0;margin:0}
.contact-card a:hover{color:var(--industrial)}
.whatsapp{
  display:flex;align-items:center;gap:.68rem;padding:1.1rem 1.35rem;background:var(--accent);
  color:var(--industrial);font-weight:700;border-radius:var(--radius)
}
.quote-form{background:var(--muted);padding:1.85rem;border-radius:var(--radius)}
.quote-form h2{font-size:1.3rem;color:var(--industrial);margin-bottom:1.25rem}
.field{margin-bottom:.92rem}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:.3rem}
.req{color:#c63535}
.field input,.field textarea{
  width:100%;border:1px solid var(--border);background:#fff;padding:.65rem .72rem;
  border-radius:5px;outline:none
}
.field input:focus,.field textarea:focus{border-color:var(--industrial);box-shadow:0 0 0 2px rgba(20,37,56,.14)}
.quote-form .btn{width:100%;margin-top:.25rem}

/* Footer */
.site-footer{background:var(--industrial);color:#fff;margin-top:5.4rem}
.no-top-margin + .site-footer,.home-main + .site-footer{margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1.25fr;gap:2.3rem;padding:3rem 0
}
.footer-brand{display:flex;align-items:center;gap:.72rem;margin-bottom:.9rem}
.footer-brand img{height:48px;width:48px;background:#fff;border-radius:5px;padding:2px;object-fit:contain}
.footer-brand-title{font-weight:700}
.footer-brand-sub{color:var(--accent);font-size:.7rem;letter-spacing:.16em;font-weight:700}
.footer-copy{font-size:.9rem;color:rgba(255,255,255,.69);max-width:410px}
.site-footer h4{color:var(--accent);font-size:.95rem;margin-bottom:.75rem}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.45rem}
.site-footer li,.site-footer li a{font-size:.89rem;color:rgba(255,255,255,.77)}
.site-footer li a:hover{color:var(--accent)}
.contact-line{display:flex;align-items:flex-start;gap:.48rem}
.contact-line .icon{width:16px;height:16px;margin-top:.2rem;flex-shrink:0}
.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:1.1rem;font-size:.75rem;color:rgba(255,255,255,.5)}
.whatsapp-float{
  position:fixed;right:1.05rem;bottom:1.05rem;z-index:90;width:54px;height:54px;border-radius:50%;
  display:none;place-items:center;background:#25d366;color:#fff;box-shadow:0 9px 20px rgba(0,0,0,.2)
}
.whatsapp-float .icon{width:27px;height:27px}

/* Responsive */
@media (max-width:920px){
  .desktop-nav{display:none}
  .nav-toggle{display:block}
  .hero-home .hero-content{padding:4.2rem 0 4.7rem}
  .features,.category-grid,.gallery,.course-items{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.5fr 1fr}
  .footer-contact{grid-column:1/-1}
  .whatsapp-float{display:grid}
}
@media (max-width:700px){
  .container{width:min(var(--max),calc(100% - 1.5rem))}
  .hero::after{background:linear-gradient(90deg,rgba(20,37,56,.98),rgba(20,37,56,.84))}
  .hero-home .hero-content,.hero-page .hero-content{padding:3.25rem 0}
  .hero h1{font-size:2.1rem}
  .hero-text{font-size:1rem}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .features,.category-grid,.gallery,.course-items,.split,.mission-grid,.contact-grid{grid-template-columns:1fr}
  .features{padding:3rem 0}
  .catalog-preview,.gallery,.mission-section{padding:3.35rem 0}
  .split{gap:1.55rem;padding:3.35rem 0}
  .split.reverse-mobile .split-copy{order:2}
  .split.reverse-mobile img{order:1}
  .client-grid{grid-template-columns:repeat(2,1fr);gap:1.7rem}
  .big-cta{padding:3.4rem 0}
  .course-listing{padding:3rem 0;gap:3rem}
  .contact-grid{padding:3rem 0}
  .footer-grid{grid-template-columns:1fr;gap:1.9rem;padding:2.55rem 0}
  .footer-contact{grid-column:auto}
  .site-footer{margin-top:3.7rem}
}