/* ============================================================
   Herrería MSM — Hoja de estilos
   Paleta e identidad "taller industrial": carbón, concreto y
   óxido. Editá las variables de :root para ajustar los colores
   en todo el sitio desde un solo lugar.
   ============================================================ */

:root{
    --charcoal:#1E1B17;
    --charcoal-2:#2A2620;
    --concrete:#E8E4DA;
    --concrete-2:#DBD5C6;
    --paper:#F5F2EA;
    --oxide:#B6431E;
    --oxide-dark:#8E3216;
    --steel:#5C6670;
    --ink:#211E1A;
    --line: rgba(33,30,26,0.12);
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:'Work Sans', sans-serif;
    color:var(--ink);
    background:var(--paper);
    line-height:1.55;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{
    font-family:'Oswald', sans-serif;
    text-transform:uppercase;
    letter-spacing:0.01em;
    font-weight:600;
    line-height:1.05;
    color:var(--ink);
  }
  a{color:inherit; text-decoration:none;}
  img{display:block; max-width:100%; height:auto;}
  .wrap{max-width:1240px; margin:0 auto; padding:0 28px;}
  .btn{
    display:inline-flex; align-items:center; gap:10px;
    font-family:'Oswald', sans-serif; text-transform:uppercase; letter-spacing:0.04em;
    font-size:14.5px; font-weight:600;
    padding:15px 28px;
    border:2px solid transparent;
    cursor:pointer;
    transition:transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  }
  .btn-solid{background:var(--oxide); color:#fff;}
  .btn-solid:hover{background:var(--oxide-dark); transform:translateY(-2px);}
  .btn-outline{border-color:rgba(255,255,255,0.55); color:#fff;}
  .btn-outline:hover{background:rgba(255,255,255,0.1); transform:translateY(-2px);}
  .btn-dark{border-color:var(--ink); color:var(--ink);}
  .btn-dark:hover{background:var(--ink); color:#fff;}

  /* ===== HEADER ===== */
  header{
    position:fixed; top:0; left:0; right:0; z-index:100;
    background:rgba(30,27,23,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .nav{display:flex; align-items:center; justify-content:space-between; height:78px;}
  .logo{
    font-family:'Oswald',sans-serif; font-weight:700; font-size:21px; color:#fff;
    letter-spacing:0.02em; display:flex; align-items:baseline; gap:8px;
  }
  .logo span{color:var(--oxide); font-size:21px;}
  .navlinks{display:flex; gap:34px; align-items:center;}
  .navlinks a{
    color:rgba(255,255,255,0.82); font-size:14px; font-family:'Oswald',sans-serif;
    text-transform:uppercase; letter-spacing:0.04em; font-weight:500;
    padding:6px 0; border-bottom:2px solid transparent; transition:.2s;
  }
  .navlinks a:hover{color:#fff; border-color:var(--oxide);}
  .nav-cta{display:flex; align-items:center; gap:20px;}
  .burger{display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; padding:8px;}
  .burger span{width:24px; height:2px; background:#fff; display:block;}

  /* ===== HERO ===== */
  .hero{
    position:relative; min-height:100vh; display:flex; flex-direction:column; justify-content:flex-end;
    background:#000;
    overflow:hidden;
  }
  .hero img{
    position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
    z-index:0;
  }
  .hero::before{
    content:'';
    position:absolute; inset:0; z-index:1;
    background:linear-gradient(90deg, rgba(15,13,10,0.94) 0%, rgba(15,13,10,0.72) 40%, rgba(15,13,10,0.35) 68%, rgba(15,13,10,0.55) 100%),
               linear-gradient(0deg, rgba(10,9,7,0.5) 0%, rgba(10,9,7,0) 30%);
  }
  .hero-content{position:relative; z-index:2; padding:180px 0 0; width:100%;}
  .hero-tag{
    color:var(--oxide); font-family:'Oswald',sans-serif; font-size:14px; font-weight:600;
    text-transform:uppercase; letter-spacing:0.12em; margin-bottom:18px; display:flex; align-items:center; gap:10px;
  }
  .hero-tag::before{content:''; width:28px; height:2px; background:var(--oxide); display:inline-block;}
  .hero h1{
    color:#fff; font-size:clamp(38px, 6vw, 74px); max-width:820px; margin-bottom:22px;
  }
  .hero h1 em{font-style:normal; color:var(--oxide);}
  .hero p.lead{
    color:rgba(255,255,255,0.82); font-size:18px; max-width:520px; margin-bottom:36px; font-weight:400;
  }
  .hero-actions{display:flex; gap:16px; flex-wrap:wrap; margin-bottom:64px;}

  .stats-strip{
    position:relative; z-index:2;
    border-top:1px solid rgba(255,255,255,0.15);
    background:rgba(10,9,7,0.55);
  }
  .stats-grid{
    display:grid; grid-template-columns:repeat(4,1fr);
  }
  .stat{
    padding:26px 28px; border-right:1px solid rgba(255,255,255,0.12);
  }
  .stat:last-child{border-right:none;}
  .stat b{display:block; font-family:'Oswald',sans-serif; font-size:30px; color:#fff; font-weight:600;}
  .stat span{color:rgba(255,255,255,0.68); font-size:13.5px;}

  /* ===== SECTION GENERIC ===== */
  section{padding:110px 0;}
  .section-head{max-width:640px; margin-bottom:56px;}
  .kicker{
    display:inline-flex; align-items:center; gap:9px;
    font-family:'Oswald',sans-serif; font-size:13px; font-weight:600; color:var(--oxide);
    text-transform:uppercase; letter-spacing:0.1em; margin-bottom:14px;
  }
  .kicker::before{content:''; width:22px; height:2px; background:var(--oxide);}
  .section-head h2{font-size:clamp(28px,3.6vw,42px); margin-bottom:16px;}
  .section-head p{color:#4b463f; font-size:16.5px; max-width:560px;}

  /* ===== SERVICES ===== */
  .services{background:var(--concrete);}
  .svc-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--ink);}
  .svc-card{
    background:var(--paper); padding:0; position:relative; overflow:hidden;
  }
  .svc-card{cursor:pointer;}
  .svc-card:focus-visible{outline:2px solid var(--oxide); outline-offset:-2px;}
  .svc-media{position:relative; height:230px; overflow:hidden;}
  .svc-media img{width:100%; height:100%; object-fit:cover; transition:transform .5s ease;}
  .svc-card:hover .svc-media img{transform:scale(1.06);}
  .svc-num{
    position:absolute; top:14px; left:14px; background:var(--oxide); color:#fff;
    font-family:'Oswald',sans-serif; font-size:13px; font-weight:600; padding:5px 10px;
  }
  .svc-hint{
    position:absolute; inset:auto 0 0 0; padding:9px 14px; font-size:12px; color:#fff;
    background:linear-gradient(0deg, rgba(0,0,0,0.78), transparent);
    font-family:'Oswald',sans-serif; text-transform:uppercase; letter-spacing:0.05em;
    opacity:0; transition:opacity .3s ease;
  }
  .svc-card:hover .svc-hint, .svc-card:focus-visible .svc-hint{opacity:1;}
  .svc-body{padding:26px 26px 30px;}
  .svc-body h3{font-size:20px; margin-bottom:10px;}
  .svc-body p{color:#4b463f; font-size:14.8px;}

  /* ===== ABOUT ===== */
  .about{background:var(--paper);}
  .about-grid{display:grid; grid-template-columns:0.85fr 1.15fr; gap:64px; align-items:center;}
  .about-media{position:relative;}
  .about-media img{width:100%; height:560px; object-fit:cover;}
  .about-badge{
    position:absolute; bottom:-24px; left:-24px; background:var(--oxide); color:#fff;
    padding:22px 26px; max-width:230px;
  }
  .about-badge b{display:block; font-family:'Oswald',sans-serif; font-size:34px;}
  .about-badge span{font-size:13px; opacity:.92;}
  .about-text p{color:#3d3931; font-size:16px; margin-bottom:18px;}
  .about-list{list-style:none; margin-top:28px; display:grid; grid-template-columns:1fr 1fr; gap:14px 24px;}
  .about-list li{
    font-size:14.5px; padding-left:22px; position:relative; color:#211e1a; font-weight:500;
  }
  .about-list li::before{
    content:''; position:absolute; left:0; top:7px; width:10px; height:10px; background:var(--oxide);
  }

  /* ===== PROCESS ===== */
  .process{background:var(--ink); color:#fff;}
  .process .section-head p{color:rgba(255,255,255,0.65);}
  .process .section-head h2{color:#fff;}
  .proc-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:0;}
  .proc-item{padding:0 30px 0 0; position:relative;}
  .proc-item + .proc-item{padding-left:30px; border-left:1px solid rgba(255,255,255,0.14);}
  .proc-num{font-family:'Oswald',sans-serif; font-size:46px; color:var(--oxide); font-weight:700; margin-bottom:14px;}
  .proc-item h3{color:#fff; font-size:18px; margin-bottom:10px;}
  .proc-item p{color:rgba(255,255,255,0.62); font-size:14.5px;}

  /* ===== GALLERY ===== */
  .gallery{background:var(--concrete);}
  .gal-grid{
    display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:190px; gap:6px;
  }
  .gal-grid a{display:block; overflow:hidden; position:relative; height:100%;}
  .gal-grid img{width:100%; height:100%; object-fit:cover; transition:transform .5s ease, filter .4s ease;}
  .gal-grid a:hover img{transform:scale(1.08);}
  .gal-grid .big{grid-column:span 2; grid-row:span 2;}
  .gal-cap{
    position:absolute; inset:auto 0 0 0; padding:10px 14px; font-size:12.5px; color:#fff;
    background:linear-gradient(0deg, rgba(0,0,0,0.75), transparent);
    font-family:'Oswald',sans-serif; text-transform:uppercase; letter-spacing:0.04em;
    opacity:0; transition:opacity .3s ease;
  }
  .gal-grid a:hover .gal-cap{opacity:1;}

  /* ===== WHY ===== */
  .why{background:var(--paper);}
  .why-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:30px;}
  .why-card{border-top:3px solid var(--oxide); padding-top:20px;}
  .why-card h3{font-size:17px; margin-bottom:10px;}
  .why-card p{font-size:14.3px; color:#4b463f;}

  /* ===== CONTACT ===== */
  .contact{background:var(--ink); color:#fff;}
  .contact .section-head h2{color:#fff;}
  .contact .section-head p{color:rgba(255,255,255,0.6);}
  .contact-grid{display:flex; justify-content:center; flex-wrap:wrap; gap:32px;}
  .contact-grid .wa-card{flex:1 1 360px; max-width:400px;}
  .cinfo-item{display:flex; gap:16px; margin-bottom:26px; align-items:flex-start;}
  .cinfo-ic{
    width:42px; height:42px; border:1px solid rgba(255,255,255,0.25); display:flex; align-items:center; justify-content:center; flex-shrink:0;
  }
  .cinfo-item h4{font-size:13px; text-transform:uppercase; letter-spacing:0.06em; color:rgba(255,255,255,0.5); margin-bottom:4px; font-family:'Oswald',sans-serif;}
  .cinfo-item p, .cinfo-item a{font-size:16px; color:#fff;}
  .wa-card{
    background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.16);
    padding:40px 32px; text-align:center;
    display:flex; flex-direction:column; align-items:center; justify-content:center;
  }
  .wa-icon-circle{
    width:64px; height:64px; border-radius:50%; background:#25D366;
    display:flex; align-items:center; justify-content:center; margin:0 auto 22px;
  }
  .wa-card h3{color:#fff; font-size:22px; margin-bottom:12px;}
  .wa-card p{color:rgba(255,255,255,0.6); font-size:14.5px; margin:0 auto 26px; max-width:340px;}
  .ig-icon-circle{
    background:radial-gradient(circle at 30% 110%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
  }

  /* ===== FOOTER ===== */
  footer{background:#151210; color:rgba(255,255,255,0.55); padding:44px 0; font-size:13.5px;}
  .foot-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;}
  .foot-row .logo{font-size:17px;}
  .credit-link{color:var(--oxide); font-weight:600; transition:color .2s;}
  .credit-link:hover{color:#fff; text-decoration:underline;}

  .wa-float{
    position:fixed; right:26px; bottom:26px; z-index:200;
    background:#25D366; width:58px; height:58px; border-radius:50%;
    display:flex; align-items:center; justify-content:center; box-shadow:0 8px 20px rgba(0,0,0,0.35);
  }

  /* ===== LIGHTBOX ===== */
  .lightbox{position:fixed; inset:0; z-index:400; display:none; align-items:center; justify-content:center; padding:40px 20px;}
  .lightbox.open{display:flex;}
  .lb-backdrop{position:absolute; inset:0; background:rgba(9,8,6,0.94);}
  .lb-content{position:relative; z-index:2; max-width:1020px; width:100%; max-height:100%; display:flex; flex-direction:column;}
  .lb-top{display:flex; justify-content:space-between; align-items:center; margin-bottom:14px;}
  .lb-title-wrap{color:#fff;}
  .lb-title-wrap h4{font-size:19px; color:#fff; margin-bottom:2px;}
  .lb-title-wrap span{font-family:'Work Sans',sans-serif; font-size:13px; color:rgba(255,255,255,0.55); text-transform:none;}
  .lb-close{background:none; border:1px solid rgba(255,255,255,0.3); color:#fff; font-size:20px; width:38px; height:38px; cursor:pointer; line-height:1; flex-shrink:0; transition:.2s;}
  .lb-close:hover{background:var(--oxide); border-color:var(--oxide);}
  .lb-main{position:relative; display:flex; align-items:center; justify-content:center; background:#000; min-height:0;}
  .lb-main img{max-width:100%; max-height:56vh; width:auto; height:auto; object-fit:contain; display:block; margin:0 auto;}
  .lb-arrow{
    position:absolute; top:50%; transform:translateY(-50%); background:rgba(10,9,7,0.6);
    border:1px solid rgba(255,255,255,0.3); color:#fff; width:44px; height:44px; border-radius:50%;
    cursor:pointer; font-size:16px; display:flex; align-items:center; justify-content:center; transition:.2s;
  }
  .lb-arrow:hover{background:var(--oxide); border-color:var(--oxide);}
  .lb-prev{left:14px;}
  .lb-next{right:14px;}
  .lb-caption-row{display:flex; justify-content:space-between; align-items:flex-start; gap:20px; padding:16px 2px 14px; color:#fff;}
  .lb-caption-row p{font-family:'Work Sans',sans-serif; font-size:14px; color:rgba(255,255,255,0.7); text-transform:none; max-width:600px;}
  .lb-counter{font-family:'Oswald',sans-serif; font-size:13px; color:rgba(255,255,255,0.5); white-space:nowrap; padding-top:2px;}
  .lb-thumbs{display:flex; gap:8px; overflow-x:auto; padding-bottom:4px;}
  .lb-thumb{width:68px; height:50px; object-fit:cover; opacity:.45; cursor:pointer; border:2px solid transparent; flex-shrink:0; transition:.2s;}
  .lb-thumb.active, .lb-thumb:hover{opacity:1; border-color:var(--oxide);}
  @media (max-width:640px){
    .lb-main img{max-height:42vh;}
    .lb-title-wrap h4{font-size:16px;}
    .lb-arrow{width:38px; height:38px;}
  }

  @media (max-width: 980px){
    .navlinks{display:none;}
    .burger{display:flex;}
    .nav-cta > a.btn{display:none;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat{border-bottom:1px solid rgba(255,255,255,0.12);}
    .svc-grid{grid-template-columns:1fr 1fr;}
    .about-grid{grid-template-columns:1fr; gap:70px;}
    .about-media img{height:400px;}
    .proc-grid{grid-template-columns:1fr 1fr; row-gap:40px;}
    .proc-item + .proc-item{border-left:none; padding-left:0;}
    .proc-item:nth-child(2n){padding-left:30px; border-left:1px solid rgba(255,255,255,0.14);}
    .gal-grid{grid-template-columns:repeat(2,1fr);}
    .why-grid{grid-template-columns:1fr 1fr; gap:34px;}
    .contact-grid{gap:24px;}
  }
  @media (max-width: 600px){
    section{padding:70px 0;}
    .svc-grid{grid-template-columns:1fr;}
    .stats-grid{grid-template-columns:1fr 1fr;}
    .proc-grid{grid-template-columns:1fr;}
    .proc-item:nth-child(2n){padding-left:0; border-left:none;}
    .gal-grid{grid-template-columns:repeat(2,1fr); grid-auto-rows:140px;}
    .gal-grid .big{grid-column:span 2; grid-row:span 1;}
    .why-grid{grid-template-columns:1fr;}
    .hero-content{padding-top:140px;}
    .about-badge{position:static; margin-top:16px; max-width:100%;}
  }