:root{
  --blue:#0575E6;
  --blue-dark:#04539E;
  --navy:#0A2A43;
  --navy-2:#0E3A5C;
  --graphite:#2B333B;
  --steel:#64748B;
  --bg:#F4F6F8;
  --white:#FFFFFF;
  --amber:#E8892C;
  --line:#D7DEE4;
  --radius:4px;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'IBM Plex Sans', sans-serif;
  color:var(--graphite);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'IBM Plex Serif', serif;
  line-height:1.2;
  color:var(--navy);
}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
ul{list-style:none;}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--blue-dark);
  font-weight:600;
  display:flex;
  align-items:center;
  gap:0.6rem;
}
.eyebrow::before{
  content:"";
  width:22px; height:2px;
  background:var(--amber);
  display:inline-block;
}
.wrap{max-width:1180px; margin:0 auto; padding:0 1.5rem;}
section{padding:5rem 0;}
.bg-alt{background:var(--bg);}

/* ---------- BUTTONS ---------- */
.btn{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.8rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  font-weight:600;
  padding:0.9rem 1.6rem;
  border-radius:var(--radius);
  display:inline-block;
  transition:all .2s ease;
  border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{background:var(--amber); color:var(--navy);}
.btn-primary:hover{background:#F4A056;}
.btn-outline{border-color:rgba(255,255,255,0.4); color:var(--white);}
.btn-outline:hover{border-color:var(--white); background:rgba(255,255,255,0.06);}
.btn-outline-dark{border-color:var(--line); color:var(--navy);}
.btn-outline-dark:hover{border-color:var(--blue); background:var(--bg);}

/* ---------- HEADER / NAV ---------- */
header{
  position:sticky; top:0; z-index:200;
  background:var(--navy);
  border-bottom:3px solid var(--blue);
}
.navbar{
  max-width:1180px; margin:0 auto; padding:1.6rem 1.5rem;
  display:flex; align-items:center; justify-content:space-between;
  position:relative;
}
.navbar .brand{display:flex; align-items:center; gap:0.7rem;}
.navbar .brand img{height:84px; width:auto; background:var(--white); padding:10px 20px; border-radius:3px;}
.navbar .brand span{
  font-family:'IBM Plex Serif', serif;
  color:var(--white);
  font-size:1rem;
  display:none;
}
nav.main-nav > ul{
  display:flex; gap:1.8rem;
}
nav.main-nav > ul > li{position:relative;}
nav.main-nav a.nav-link{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.75rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:#CFE1F4;
  font-weight:500;
  transition:color .2s;
  padding:1.1rem 0;
  display:block;
  border-bottom:2px solid transparent;
}
nav.main-nav a.nav-link:hover,
nav.main-nav li.active a.nav-link{color:var(--white); border-color:var(--amber);}
.nav-toggle{display:none; background:none; border:none; color:var(--white); font-size:1.6rem; cursor:pointer;}

/* ---------- MEGA MENU / FLYOUT ---------- */
.has-mega{position:static;}
.mega-panel{
  display:none;
  position:absolute; left:0; right:0; top:100%;
  background:var(--white);
  border-bottom:3px solid var(--blue);
  box-shadow:0 12px 24px rgba(10,42,67,0.18);
  z-index:150;
}
.has-mega:hover .mega-panel,
.has-mega.open .mega-panel{display:block;}
.mega-inner{
  max-width:1180px; margin:0 auto; padding:1.6rem 1.5rem;
  display:grid; grid-template-columns:repeat(4, 1fr); gap:1.6rem;
}
.mega-col h4{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--blue-dark);
  border-bottom:1px solid var(--line);
  padding-bottom:0.5rem;
  margin-bottom:0.6rem;
}
.mega-col > a{
  font-size:0.88rem;
  color:var(--navy);
  font-weight:600;
  display:block;
  margin-bottom:0.3rem;
}
.mega-col > a:hover{color:var(--blue);}
.mega-col ul{margin-left:0; margin-bottom:0.6rem;}
.mega-col ul li a{
  font-size:0.82rem;
  color:var(--steel);
  display:block;
  padding:0.18rem 0;
}
.mega-col ul li a:hover{color:var(--blue-dark);}

/* simple flyout for Servicios (fewer items, single column of items with sub-flyout) */
.simple-mega{
  max-width:1180px; margin:0 auto; padding:1.2rem 1.5rem;
  display:flex; flex-wrap:wrap; gap:0.5rem 2.5rem;
}
.simple-mega > li{position:relative;}
.simple-mega > li > a{
  font-size:0.92rem; font-weight:600; color:var(--navy);
  padding:0.4rem 0; display:block;
}
.simple-mega > li > a:hover{color:var(--blue);}
.simple-mega .sub-flyout{
  display:none;
  position:absolute; left:100%; top:0;
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:0 8px 18px rgba(10,42,67,0.14);
  min-width:260px;
  padding:0.6rem 0;
  z-index:160;
}
.simple-mega > li:hover .sub-flyout{display:block;}
.simple-mega .sub-flyout a{
  display:block; padding:0.5rem 1rem; font-size:0.85rem; color:var(--graphite);
}
.simple-mega .sub-flyout a:hover{background:var(--bg); color:var(--blue-dark);}

/* ---------- BREADCRUMB / CATEGORY HEADER ---------- */
.cat-breadcrumb{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.75rem;
  color:var(--steel);
  margin-bottom:0.6rem;
}
.cat-breadcrumb a{color:var(--blue-dark);}
.cat-breadcrumb a:hover{text-decoration:underline;}

/* ---------- CATALOG LAYOUT (Productos / Servicios pages) ---------- */
.catalog-hero{
  background:var(--navy); color:var(--white); padding:3rem 0 2.5rem;
}
.catalog-hero h1{color:var(--white); font-size:clamp(1.6rem,3vw,2.2rem);}
.catalog-hero p{color:#C7D6E4; max-width:60ch; margin-top:0.6rem;}

.catalog-body{padding:3rem 0 5rem;}
.catalog-layout{display:grid; grid-template-columns:270px 1fr; gap:2.2rem; align-items:start;}

.tree-nav{
  border:1px solid var(--line); border-radius:var(--radius);
  background:var(--white);
  position:sticky; top:9.8rem;
  max-height:78vh; overflow-y:auto;
}
.tree-nav .tree-title{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.7rem; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--blue-dark); font-weight:700;
  padding:0.9rem 1rem 0.6rem; border-bottom:1px solid var(--line);
}
.tree-nav ul{padding:0.4rem 0;}
.tree-nav .tlvl1 > a{
  font-weight:600; font-size:0.9rem; color:var(--navy);
  padding:0.55rem 1rem; display:block;
}
.tree-nav .tlvl2 > a{
  font-size:0.85rem; color:var(--graphite);
  padding:0.4rem 1rem 0.4rem 1.6rem; display:block;
}
.tree-nav .tlvl3 > a{
  font-size:0.8rem; color:var(--steel);
  padding:0.35rem 1rem 0.35rem 2.3rem; display:block;
}
.tree-nav li > a:hover, .tree-nav li.active > a{color:var(--blue); background:var(--bg);}
.tree-nav .tlvl1{border-top:1px solid var(--line);}
.tree-nav .tlvl1:first-child{border-top:none;}

.catalog-content h2.section-title{
  font-size:1.5rem; margin-bottom:0.3rem;
}
.catalog-content .section-desc{color:var(--steel); margin-bottom:1.8rem;}

.product-grid{
  display:grid; grid-template-columns:repeat(auto-fill, minmax(230px,1fr)); gap:1.3rem;
  margin-bottom:2.6rem;
}
.product-card{
  border:1px solid var(--line); border-radius:var(--radius); background:var(--white);
  overflow:hidden; display:flex; flex-direction:column;
}
.product-card .img-wrap{
  height:170px; background:var(--bg); display:flex; align-items:center; justify-content:center; overflow:hidden;
  border-bottom:1px solid var(--line);
}
.product-card .img-wrap img{width:100%; height:100%; object-fit:contain; padding:0.6rem;}
.product-card .img-wrap.noimg{color:var(--steel); font-family:'IBM Plex Mono', monospace; font-size:0.7rem; text-transform:uppercase;}
.product-card .card-body{padding:1rem 1.1rem 1.2rem; flex:1; display:flex; flex-direction:column;}
.product-card .card-title{font-family:'IBM Plex Serif', serif; font-size:1rem; color:var(--navy); margin-bottom:0.6rem;}
.spec-list{margin-top:auto;}
.spec-list .spec-row{
  display:flex; justify-content:space-between; gap:0.6rem;
  font-size:0.8rem; padding:0.3rem 0; border-top:1px dashed var(--line);
}
.spec-row .k{
  font-family:'IBM Plex Mono', monospace; color:var(--steel); text-transform:uppercase; font-size:0.68rem; letter-spacing:0.04em;
  flex:none; padding-top:0.1rem;
}
.spec-row .v{color:var(--graphite); text-align:right;}

.subcat-block{margin-bottom:3rem;}
.subcat-block h3.subcat-title{
  font-size:1.15rem; margin-bottom:0.2rem; padding-bottom:0.6rem; border-bottom:2px solid var(--line);
}
.subcat-block .subcat-path{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; color:var(--blue-dark);
  text-transform:uppercase; margin-bottom:1rem; display:block;
}

/* ---------- SERVICES CONTENT ---------- */
.tree-back{border-top:none !important; border-bottom:1px solid var(--line); margin-bottom:0.3rem;}
.tree-back > a{
  font-family:'IBM Plex Mono', monospace; font-size:0.72rem; letter-spacing:0.04em;
  color:var(--blue-dark) !important; padding:0.7rem 1rem !important; font-weight:600;
}
.service-block{margin-bottom:3.5rem; padding-bottom:3rem; border-bottom:1px solid var(--line);}
.service-block:last-child{border-bottom:none;}
.service-block h2.service-title{font-size:1.4rem; margin-bottom:1rem;}
h3.subservice-title{font-size:1.1rem; margin:2.2rem 0 0.8rem; padding-top:1.6rem; border-top:1px dashed var(--line);}
.service-text p{color:var(--graphite); margin-bottom:0.9rem; font-size:0.96rem;}
.service-text ul.plain-list{margin:0.6rem 0 1rem 0;}
.service-text ul.plain-list li{
  padding:0.3rem 0 0.3rem 1.2rem; position:relative; font-size:0.94rem; color:var(--graphite);
}
.service-text ul.plain-list li::before{content:"–"; position:absolute; left:0; color:var(--blue-dark);}
.service-text ul.bullet-list li{
  padding:0.25rem 0 0.25rem 1.2rem; position:relative; font-size:0.9rem; color:var(--steel);
}
.service-text ul.bullet-list li::before{content:"◆"; position:absolute; left:0; top:0.35rem; color:var(--amber); font-size:0.6rem;}

/* Creative masonry-style gallery (change #7) — organic sizes, not a uniform square grid */
.image-gallery{
  column-count:3; column-gap:1.1rem; margin-top:1.6rem;
}
.image-gallery .g-item{
  break-inside:avoid; margin-bottom:1.1rem; border-radius:10px; overflow:hidden;
  box-shadow:0 6px 18px rgba(10,42,67,0.10); border:1px solid var(--line);
  transition:transform .2s ease, box-shadow .2s ease;
}
.image-gallery .g-item:hover{transform:translateY(-3px); box-shadow:0 10px 26px rgba(10,42,67,0.16);}
.image-gallery .g-item img{width:100%; height:auto; display:block;}
.image-gallery .g-item:nth-child(3n+2){margin-top:1.8rem;}

/* Featured layout for Tratamiento de Hidrocarburos — CTSTABLA.png large (change #6) */
.featured-gallery{margin-top:1.8rem;}
.featured-img{
  border-radius:12px; overflow:hidden; border:1px solid var(--line);
  box-shadow:0 14px 34px rgba(10,42,67,0.16); margin-bottom:1.3rem;
}
.featured-img img{width:100%; height:auto; display:block;}
.secondary-row{display:grid; grid-template-columns:repeat(2, 1fr); gap:1rem;}
.secondary-img{
  border-radius:8px; overflow:hidden; border:1px solid var(--line);
  box-shadow:0 4px 12px rgba(10,42,67,0.08); opacity:0.92;
}
.secondary-img img{width:100%; height:auto; display:block;}

/* Rango toggle (change #3, Termómetros de mercurio) */
details.rango-toggle{
  margin-top:1.2rem; border:1px solid var(--line); border-radius:var(--radius); background:var(--bg);
  padding:0.9rem 1.2rem;
}
details.rango-toggle summary{
  cursor:pointer; font-family:'IBM Plex Mono', monospace; font-size:0.82rem; font-weight:600;
  color:var(--blue-dark); letter-spacing:0.02em; list-style:none;
}
details.rango-toggle summary::-webkit-details-marker{display:none;}
details.rango-toggle summary::before{content:"▸ "; color:var(--amber);}
details.rango-toggle[open] summary::before{content:"▾ "; }
details.rango-toggle .rango-images{margin-top:1.2rem; display:flex; flex-direction:column; gap:1rem;}
details.rango-toggle .rango-images img{
  width:100%; max-width:640px; border:1px solid var(--line); border-radius:6px;
  box-shadow:0 6px 18px rgba(10,42,67,0.10);
}

/* Services landing menu (change #5) */
.service-menu-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(260px,1fr)); gap:1.4rem;
}
.service-menu-card{
  display:block; border:1px solid var(--line); border-radius:var(--radius); background:var(--white);
  padding:1.8rem 1.7rem; transition:all .2s ease;
}
.service-menu-card:hover{border-color:var(--blue); box-shadow:0 10px 24px rgba(10,42,67,0.1); transform:translateY(-2px);}
.service-menu-card .smc-num{
  font-family:'IBM Plex Mono', monospace; font-size:0.75rem; color:var(--blue-dark); font-weight:700;
}
.service-menu-card h3{font-size:1.15rem; margin:0.6rem 0 0.7rem;}
.service-menu-card p{color:var(--steel); font-size:0.9rem; margin-bottom:1rem;}
.service-menu-card .smc-cta{
  font-family:'IBM Plex Mono', monospace; font-size:0.72rem; text-transform:uppercase;
  letter-spacing:0.06em; color:var(--amber); font-weight:600;
}

@media (max-width: 720px){
  .image-gallery{column-count:2;}
  .secondary-row{grid-template-columns:1fr;}
}
@media (max-width: 480px){
  .image-gallery{column-count:1;}
}

.coming-soon{
  margin-top:1.4rem;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  background:var(--bg);
  padding:1.1rem 1.3rem;
  display:flex; align-items:center; gap:0.9rem;
  color:var(--steel);
  font-size:0.9rem;
}
.coming-soon .dot{width:9px; height:9px; border-radius:50%; background:var(--amber); flex:none;}

/* ---------- HOME (gateway) — full-bleed photo background ---------- */
.home-hero{
  min-height:calc(100vh - 159px);
  display:flex; align-items:center; justify-content:center;
  position:relative;
  text-align:center;
  background:url('../assets/fondoprincipal.jpg') center center / cover no-repeat;
}
.home-hero::before{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(10,42,67,0.72), rgba(10,42,67,0.58) 40%, rgba(10,42,67,0.8));
}
.home-hero-inner{position:relative; z-index:2; max-width:640px; padding:2rem 1.5rem;}
.home-hero h1{
  color:var(--white); font-weight:400; font-size:clamp(1.3rem,2.6vw,1.7rem);
  margin-bottom:3rem; text-shadow:0 2px 12px rgba(0,0,0,0.25);
}
.gateway-buttons{
  display:flex; gap:2rem; justify-content:center; flex-wrap:wrap;
}
.gateway-btn{
  border:1px solid rgba(255,255,255,0.45);
  padding:2.6rem 3.6rem;
  min-width:230px;
  font-family:'IBM Plex Serif', serif;
  font-size:1.4rem;
  font-weight:600;
  color:var(--white);
  border-radius:var(--radius);
  transition:all .2s ease;
  background:rgba(255,255,255,0.08);
  backdrop-filter:blur(6px);
  letter-spacing:0.02em;
}
.gateway-btn:hover{
  border-color:var(--amber);
  background:rgba(232,137,44,0.16);
  transform:translateY(-2px);
}
.gateway-btn .g-label{display:block;}
.gateway-btn .g-sub{
  display:block; font-family:'IBM Plex Mono', monospace; font-size:0.65rem;
  letter-spacing:0.08em; text-transform:uppercase; color:#DCE8F3; font-weight:500; margin-top:0.6rem;
}

/* ---------- PAGE HERO (Nosotros, Marcas, Contacto internal pages) ---------- */
.page-hero{
  background:var(--navy); color:var(--white); padding:3.4rem 0 2.6rem;
}
.page-hero h1{color:var(--white); font-size:clamp(1.7rem,3.4vw,2.3rem);}
.page-hero p{color:#C7D6E4; max-width:62ch; margin-top:0.7rem;}

/* ---------- NAMEPLATE (signature element, from Nosotros) ---------- */
.plate-grid{display:grid; grid-template-columns:repeat(2, 1fr); gap:1.5rem;}
.plate{
  position:relative;
  background:linear-gradient(180deg, #FFFFFF, #F2F5F7);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1.9rem 1.9rem 1.7rem;
  box-shadow:0 1px 2px rgba(10,42,67,0.04);
}
.plate::before, .plate::after, .plate .rivet-bl, .plate .rivet-br{
  content:""; position:absolute; width:7px; height:7px; border-radius:50%;
  background:radial-gradient(circle at 35% 35%, #C6CFD6, #8895A1);
  box-shadow:inset 0 0 0 1px rgba(0,0,0,0.08);
}
.plate::before{top:10px; left:10px;}
.plate::after{top:10px; right:10px;}
.plate .rivet-bl{bottom:10px; left:10px;}
.plate .rivet-br{bottom:10px; right:10px;}
.plate-label{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; letter-spacing:0.12em;
  color:var(--blue-dark); text-transform:uppercase; font-weight:600;
  margin-bottom:0.7rem; padding-bottom:0.6rem; border-bottom:1px dashed var(--line);
}
.plate h3{font-size:1.15rem; margin-bottom:0.6rem;}
.plate p{color:var(--steel); font-size:0.96rem;}
.value-plate ul{list-style:none; margin-top:0.4rem;}
.value-plate li{position:relative; padding-left:1.3rem; margin-bottom:0.7rem; color:var(--graphite); font-size:0.96rem;}
.value-plate li::before{content:"◆"; position:absolute; left:0; top:0.05rem; color:var(--amber); font-size:0.7rem;}
.coverage-row{display:flex; flex-wrap:wrap; gap:0.8rem; margin-top:1.2rem;}
.coverage-tag{
  font-family:'IBM Plex Mono', monospace; font-size:0.78rem; border:1px solid var(--line);
  background:var(--white); padding:0.5rem 0.9rem; border-radius:2px; color:var(--navy);
}

/* ---------- BRAND GRID (Marcas) ---------- */
.brand-grid{display:grid; grid-template-columns:repeat(4, 1fr); gap:1rem; margin-top:1rem;}
.brand-slot{
  height:110px; border:1px dashed var(--line); border-radius:var(--radius);
  display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace; font-size:0.68rem; color:var(--steel);
  text-transform:uppercase; letter-spacing:0.05em; text-align:center; background:var(--white);
}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid; grid-template-columns:1.1fr 1fr; gap:2.5rem; align-items:start;}
.contact-info h3{font-size:1rem; margin:1.4rem 0 0.4rem;}
.contact-info p{color:var(--steel); font-size:0.95rem;}
.contact-info .label{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; letter-spacing:0.1em;
  color:var(--blue-dark); text-transform:uppercase; font-weight:600;
}
form{
  background:var(--bg); border:1px solid var(--line); border-radius:var(--radius);
  padding:1.8rem; display:flex; flex-direction:column; gap:1rem;
}
label{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--steel); font-weight:600;
}
input, textarea{
  font-family:'IBM Plex Sans', sans-serif; font-size:0.95rem; padding:0.7rem 0.8rem;
  border:1px solid var(--line); border-radius:3px; background:var(--white); color:var(--graphite); resize:vertical;
}
input:focus, textarea:focus{outline:2px solid var(--blue); outline-offset:1px;}
.field{display:flex; flex-direction:column; gap:0.4rem;}

/* ---------- FOOTER ---------- */
footer{background:var(--navy); color:#B9CCDD; padding:2.6rem 0; font-size:0.85rem;}
.footer-inner{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1rem;}
.footer-inner .brand{display:flex; align-items:center; gap:0.6rem; color:var(--white); font-family:'IBM Plex Serif', serif;}
.footer-inner img{height:24px; background:var(--white); padding:3px 6px; border-radius:2px;}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 980px){
  .catalog-layout{grid-template-columns:1fr;}
  .tree-nav{position:static; max-height:none;}
  .mega-inner{grid-template-columns:repeat(2, 1fr);}
}
@media (max-width: 860px){
  .plate-grid, .contact-grid{grid-template-columns:1fr;}
  .brand-grid{grid-template-columns:repeat(2,1fr);}
  .gateway-buttons{flex-direction:column; align-items:center;}
}
@media (max-width: 720px){
  nav.main-nav{
    position:absolute; top:100%; left:0; right:0; background:var(--navy);
    flex-direction:column; padding:0; max-height:0; overflow:hidden;
    transition:max-height .25s ease; border-bottom:3px solid var(--blue);
  }
  nav.main-nav.open{max-height:600px; overflow-y:auto;}
  nav.main-nav > ul{flex-direction:column; gap:0; padding:0.5rem 1.5rem 1rem;}
  nav.main-nav > ul > li{border-top:1px solid rgba(255,255,255,0.08);}
  nav.main-nav a.nav-link{padding:0.9rem 0;}
  .nav-toggle{display:block;}
  .mega-panel{position:static; box-shadow:none; border-bottom:none;}
  .mega-inner, .simple-mega{grid-template-columns:1fr; padding:0.4rem 1rem 0.8rem;}
  .simple-mega{flex-direction:column;}
  .simple-mega .sub-flyout{position:static; box-shadow:none; border:none; padding-left:1rem; min-width:0;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}