:root{
    --black:#050505;
    --black2:#0d0d0d;
    --ink:#151515;
    --white:#ffffff;
    --paper:#f5f5f2;
    --gray:#a7a7a7;
    --gray2:#686868;
    --line:rgba(255,255,255,.16);
    --line-dark:rgba(0,0,0,.14);
    --shadow:0 24px 70px rgba(0,0,0,.18);
    --radius:16px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Poppins,Arial,sans-serif;background:var(--white);color:var(--black);line-height:1.65}
body.menu-open{overflow:hidden}
img{display:block;width:100%}
a{text-decoration:none;color:inherit}
button,input,select,textarea{font:inherit}

.site-header{
    position:fixed;inset:0 0 auto;z-index:1000;
    min-height:82px;padding:12px 5%;
    display:flex;align-items:center;gap:28px;
    background:rgba(5,5,5,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(15px)
}
.brand{display:flex;align-items:center;gap:13px;margin-right:auto;color:#fff}
.brand img{width:54px;height:54px;object-fit:cover;border-radius:50%}
.brand span{display:flex;flex-direction:column;line-height:1.15}
.brand strong{font-size:21px;letter-spacing:2px}
.brand small{margin-top:5px;color:#bbb;font-size:9px;letter-spacing:1.6px;text-transform:uppercase}

.main-nav{display:flex;align-items:center;gap:23px}
.main-nav>a,.dropdown-toggle{
    border:0;background:transparent;color:#d6d6d6;cursor:pointer;
    font-size:12px;font-weight:700;letter-spacing:.7px;text-transform:uppercase
}
.main-nav>a:hover,.main-nav>a.active,.dropdown-toggle:hover{color:#fff}
.nav-dropdown{position:relative}
.dropdown-toggle{display:flex;align-items:center;gap:7px}
.dropdown-menu{
    position:absolute;top:calc(100% + 18px);left:50%;
    min-width:285px;padding:9px;
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translate(-50%,10px);
    background:#090909;border:1px solid var(--line);
    border-radius:12px;box-shadow:0 22px 55px rgba(0,0,0,.35);
    transition:.25s
}
.dropdown-menu a{display:block;padding:11px 12px;color:#ccc;border-radius:8px;font-size:12px}
.dropdown-menu a:hover{background:#fff;color:#000}
.dropdown-separator{height:1px;margin:7px 8px;background:#262626}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu,
.nav-dropdown.open .dropdown-menu{
    opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)
}
.header-cta{
    padding:11px 17px;color:#fff;border:1px solid #fff;border-radius:7px;
    font-size:11px;font-weight:800;text-transform:uppercase
}
.header-cta:hover{background:#fff;color:#000}
.menu-toggle{display:none;background:transparent;border:0;color:#fff;font-size:24px}

.hero,.service-hero,.internal-hero{position:relative;overflow:hidden}
.home-hero{
    min-height:100vh;padding:145px 7% 75px;
    display:flex;align-items:center
}
.hero-bg{
    position:absolute;inset:0;
    background:url('../img/hero.jpg') center/cover no-repeat
}
.hero-overlay{
    position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(0,0,0,.98),rgba(0,0,0,.82) 48%,rgba(0,0,0,.28))
}
.hero-content{position:relative;z-index:2;width:min(820px,100%);color:#fff}
.eyebrow{
    margin-bottom:16px;font-size:12px;font-weight:800;
    letter-spacing:2.5px;text-transform:uppercase
}
.hero-content .eyebrow,.service-hero .eyebrow,.internal-hero .eyebrow,.section-ink .eyebrow{color:#cfcfcf}
.hero h1,.service-hero h1,.internal-hero h1{
    font-size:clamp(46px,6vw,88px);
    line-height:.98;letter-spacing:-3px;text-transform:uppercase
}
.hero h1 span,.service-hero h1 span,.internal-hero h1 span{
    display:block;color:#fff
}
.hero-copy{max-width:700px;margin-top:26px;color:#d8d8d8;font-size:18px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
    min-height:50px;padding:0 23px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:7px;font-size:12px;font-weight:800;
    letter-spacing:.5px;text-transform:uppercase;
    transition:.25s;cursor:pointer
}
.btn:hover{transform:translateY(-2px)}
.btn-solid{background:#000;color:#fff;border:1px solid #000}
.section-ink .btn-solid,.service-hero .btn-solid,.hero .btn-solid{background:#fff;color:#000;border-color:#fff}
.btn-outline{color:#fff;border:1px solid rgba(255,255,255,.6)}

.hero-capabilities{
    display:grid;grid-template-columns:repeat(4,1fr);gap:10px;
    margin-top:48px;padding-top:23px;border-top:1px solid rgba(255,255,255,.2)
}
.hero-capabilities article{
    padding:12px;display:flex;align-items:center;gap:10px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.11);border-radius:10px
}
.hero-capabilities i{font-size:18px}
.hero-capabilities div{display:flex;flex-direction:column}
.hero-capabilities strong{font-size:11px}
.hero-capabilities span{color:#aaa;font-size:9px}

.section{padding:100px 7%}
.section-ink{background:#090909;color:#fff}
.section-heading{max-width:760px;margin-bottom:44px}
.section-heading.centered{margin-left:auto;margin-right:auto;text-align:center}
.section-heading h2,.form-layout h2,.contact-info h2,.service-split h2{
    margin-bottom:15px;font-size:clamp(34px,4.2vw,56px);
    line-height:1.07;letter-spacing:-1.7px
}
.section-heading>p:last-child,.large-copy,.form-layout>div>p:not(.eyebrow){
    color:#686868;font-size:16px
}
.section-ink .section-heading>p:last-child,
.section-ink .form-layout>div>p:not(.eyebrow){color:#b5b5b5}

.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.service-card{
    position:relative;min-height:310px;padding:28px;
    display:flex;flex-direction:column;
    background:#f5f5f3;border:1px solid var(--line-dark);
    border-radius:var(--radius);transition:.3s
}
.service-card:hover{transform:translateY(-7px);background:#000;color:#fff;box-shadow:var(--shadow)}
.service-card>span{position:absolute;top:24px;right:26px;color:#aaa;font-size:30px;font-weight:800}
.service-icon{
    width:52px;height:52px;display:grid;place-items:center;margin-bottom:44px;
    border:1px solid #aaa;border-radius:12px
}
.service-card h3{margin-bottom:11px;font-size:21px}
.service-card p{color:#666;font-size:13px}
.service-card:hover p{color:#c8c8c8}
.service-card b{margin-top:auto;padding-top:20px;font-size:12px}

.process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.process-card{min-height:270px;padding:24px;border:1px solid var(--line);border-radius:var(--radius)}
.process-card span{display:block;margin-bottom:45px;color:#777;font-size:35px;font-weight:800}
.process-card h3{margin-bottom:10px}
.process-card p{color:#aaa;font-size:12px}

.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.project-card{overflow:hidden;background:#f5f5f3;border:1px solid var(--line-dark);border-radius:var(--radius)}
.project-card img{height:350px;object-fit:cover}
.project-card div{padding:22px}
.project-card small{color:#777;text-transform:uppercase;letter-spacing:1.3px}
.project-card h3{margin:8px 0}
.project-card p{color:#666}

.cta-section{text-align:center;background:#ececea}
.cta-content{max-width:850px;margin:auto}
.cta-content h2{font-size:clamp(36px,5vw,66px);line-height:1.04;margin-bottom:16px}
.cta-content p{color:#666;margin-bottom:28px}

.internal-hero,.service-hero{
    min-height:590px;padding:145px 7% 80px;
    display:flex;align-items:center;color:#fff;
    background-position:center;background-size:cover
}
.internal-hero>div,.service-hero>div{width:min(850px,100%)}
.internal-hero p:not(.eyebrow),.service-hero p:not(.eyebrow){
    max-width:720px;margin:24px 0 32px;color:#d1d1d1;font-size:17px
}
.hero-service-icon{margin-bottom:20px;font-size:34px}

/* Images remain in color. The black/white treatment is only the interface. */
.hero-image-general,.hero-engineering{
    background:
        linear-gradient(90deg,rgba(0,0,0,.97),rgba(0,0,0,.66)),
        url('../img/nylamid.jpg') center/cover
}
.hero-manufacturing{
    background:
        linear-gradient(90deg,rgba(0,0,0,.97),rgba(0,0,0,.58)),
        url('../img/rodaja.jpg') center/cover
}
.hero-printing{
    background:
        linear-gradient(90deg,rgba(0,0,0,.97),rgba(0,0,0,.58)),
        url('../img/impresion3d.jpg') center/cover
}
.hero-training,.hero-contact,.hero-materials,.hero-projects,.hero-about{
    background:
        linear-gradient(90deg,rgba(0,0,0,.97),rgba(0,0,0,.62)),
        url('../img/hero.jpg') center/cover
}

.service-split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.service-visual img{height:530px;object-fit:cover;border-radius:var(--radius)}
.check-list{display:grid;gap:13px;margin-top:28px;list-style:none}
.check-list li{padding-bottom:12px;border-bottom:1px solid #ddd}
.check-list i{margin-right:10px}
.service-note{margin-top:22px;color:#777;font-size:12px}

.form-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
.quote-form{padding:32px;background:#fff;color:#000;border-radius:var(--radius)}
.field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.quote-form label{
    display:grid;gap:7px;margin-bottom:16px;
    color:#333;font-size:12px;font-weight:700
}
.quote-form input,.quote-form select,.quote-form textarea{
    width:100%;padding:13px 14px;color:#000;background:#f4f4f2;
    border:1px solid #ccc;border-radius:7px;outline:none
}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{border-color:#000}
.quote-form small{display:block;margin-top:12px;color:#777;font-size:11px}
.conditional-stps{padding:18px;margin-bottom:16px;background:#ececea;border-radius:10px}

.material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.material-card{min-height:230px;padding:24px;background:#f5f5f3;border:1px solid #ddd;border-radius:var(--radius)}
.material-card b{display:block;margin-bottom:55px;font-size:26px}
.material-card p{color:#666;font-size:12px}

.contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
.contact-item{display:flex;align-items:center;gap:15px;padding:17px 0;border-bottom:1px solid #ddd}
.contact-item i{width:44px;height:44px;display:grid;place-items:center;background:#000;color:#fff;border-radius:50%}
.contact-item div{display:flex;flex-direction:column}
.contact-item a,.contact-item span{color:#666}

.course-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.course-chip{
    padding:16px;text-align:left;background:#f4f4f2;
    border:1px solid #ddd;border-radius:10px;cursor:pointer;font-weight:600
}
.course-chip:hover{background:#000;color:#fff}

.site-footer{
    padding:30px 7%;display:grid;grid-template-columns:1fr auto auto;
    gap:30px;align-items:center;background:#050505;color:#fff;border-top:1px solid #222
}
.site-footer>div:first-child{display:flex;flex-direction:column}
.site-footer span,.site-footer p,.footer-links a{color:#aaa;font-size:11px}
.footer-links{display:flex;gap:18px}

.whatsapp-float{
    position:fixed;right:22px;bottom:22px;z-index:900;
    width:52px;height:52px;display:grid;place-items:center;
    background:#fff;color:#000;border:1px solid #000;border-radius:50%;
    box-shadow:var(--shadow);font-size:23px
}

.reveal{opacity:0;transform:translateY(28px);transition:.7s}
.reveal.visible{opacity:1;transform:none}

@media(max-width:1100px){
    .hero-capabilities{grid-template-columns:repeat(2,1fr)}
    .process-grid{grid-template-columns:repeat(2,1fr)}
    .material-grid{grid-template-columns:repeat(2,1fr)}
    .header-cta{display:none}
}
@media(max-width:900px){
    .menu-toggle{display:block}
    .main-nav{
        position:absolute;top:100%;left:0;width:100%;max-height:0;
        display:block;overflow:hidden;background:#050505;
        transition:max-height .3s
    }
    .main-nav.open{max-height:calc(100vh - 70px);overflow-y:auto}
    .main-nav>a,.dropdown-toggle{
        width:100%;padding:16px 6%;display:flex;justify-content:space-between;border-top:1px solid #222
    }
    .dropdown-menu{
        position:static;width:100%;min-width:0;max-height:0;padding:0;
        overflow:hidden;opacity:1;visibility:visible;pointer-events:auto;
        transform:none;border:0;border-radius:0
    }
    .nav-dropdown.open .dropdown-menu{max-height:550px;transform:none}
    .dropdown-menu a{padding-left:12%;border-top:1px solid #181818}
    .service-grid,.project-grid{grid-template-columns:repeat(2,1fr)}
    .service-split,.form-layout,.contact-layout{grid-template-columns:1fr}
}
@media(max-width:650px){
    .site-header{min-height:70px;padding:9px 5%}
    .brand img{width:46px;height:46px}
    .brand strong{font-size:16px}
    .brand small{display:none}
    .home-hero{min-height:100svh;padding:115px 7% 65px}
    .hero h1,.service-hero h1,.internal-hero h1{font-size:clamp(39px,12vw,58px);letter-spacing:-2px}
    .hero-actions{flex-direction:column}
    .btn{width:100%}
    .hero-capabilities,.service-grid,.process-grid,.project-grid,.material-grid,.field-grid,.course-list{grid-template-columns:1fr}
    .section{padding:75px 7%}
    .project-card img,.service-visual img{height:360px}
    .site-footer{grid-template-columns:1fr}
    .footer-links{flex-direction:column;gap:6px}
}
@media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
    *{transition-duration:.01ms!important}
}