:root{
  --green:#087334;
  --green2:#14964a;
  --green3:#73ee9a;
  --black:#071017;
  --dark:#101b22;
  --dark2:#162934;
  --text:#111827;
  --muted:#55636d;
  --bg:#f5f7f7;
  --white:#ffffff;
  --line:#e3e9e6;
  --shadow:0 20px 60px rgba(0,0,0,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{text-decoration:none;color:inherit}
.container{width:min(1180px,92%);margin:auto}
section[id],#inicio,#empresa,#materiales,#galeria,#contacto{scroll-margin-top:125px}

.top-green{background:#075c2a;color:white;font-size:14px;font-weight:700}
.top-green-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:9px 0;white-space:nowrap}
.top-green a{font-weight:900;color:white}

.main-header{background:white;position:sticky;top:0;z-index:80;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo-wrap{display:flex;align-items:center;gap:14px}
.logo-wrap img{width:86px;height:58px;object-fit:contain}
.logo-wrap strong{display:block;font-size:27px;line-height:.9;color:#111}
.logo-wrap small{font-weight:900;color:var(--green);letter-spacing:.08em}
.menu{display:flex;align-items:center;gap:16px;font-weight:900}
.menu a{padding:12px 14px;border-radius:16px}
.menu a:hover,.menu a.active{background:#e8f8ee;color:var(--green)}
.menu-cta{background:linear-gradient(135deg,var(--green),var(--green2))!important;color:white!important;border-radius:999px!important;padding:15px 24px!important;box-shadow:0 18px 35px rgba(8,115,52,.22)}
.menu-btn{display:none;border:0;background:var(--green);color:white;border-radius:12px;font-size:21px;padding:10px 13px}

.hero-main{position:relative;min-height:710px;background:url('img/fierro.png') center/cover no-repeat;color:white;display:flex;align-items:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,25,13,.93) 0%,rgba(3,25,13,.78) 42%,rgba(3,25,13,.38) 100%)}
.hero-main-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center;padding:70px 0}
.pill{display:inline-flex;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:8px 14px;font-weight:900;letter-spacing:.08em}
.hero-copy h1{font-size:clamp(46px,6.6vw,86px);line-height:.98;margin:26px 0 24px;color:white;letter-spacing:-.055em}
.hero-copy h1 em{font-style:normal;color:var(--green3)}
.hero-copy p{font-size:22px;max-width:820px;color:#e7f2ea}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:15px 24px;font-weight:900;transition:.2s}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:linear-gradient(135deg,var(--green),var(--green2));color:white;box-shadow:0 18px 40px rgba(0,0,0,.22)}
.btn.white{background:white;color:#111}

.quote-card{background:rgba(255,255,255,.94);color:#111;border-radius:26px;padding:34px;box-shadow:var(--shadow)}
.quote-card img{display:block;width:230px;height:120px;object-fit:contain;margin:0 auto 22px}
.quote-card h2{font-size:28px;margin:0 0 10px}
.quote-card p{color:#56636b}
.quote-card ul{padding:0;margin:22px 0;list-style:none}
.quote-card li{font-weight:900;padding:10px 0;border-bottom:1px solid #dfe6e3}
.quote-card li:before{content:"✓";color:var(--green);margin-right:10px}
.quote-card a{display:inline-flex;background:linear-gradient(135deg,var(--green),var(--green2));color:white;border-radius:999px;padding:13px 20px;font-weight:900}

.green-services{background:#075c2a;padding:30px 0}
.green-services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.green-services article{background:white;border-radius:22px;padding:16px;display:grid;grid-template-columns:82px 1fr;gap:14px;align-items:center;box-shadow:0 16px 38px rgba(0,0,0,.15)}
.green-services img{width:82px;height:72px;object-fit:cover;border-radius:14px}
.green-services h3{margin:0;color:var(--green);font-size:21px}
.green-services p{margin:2px 0 0;color:#52616b;font-size:14px}

.section-label{display:inline-block;color:var(--green);font-weight:900;letter-spacing:.11em;font-size:14px;margin-bottom:12px}
.section-label.light{color:#bff7ca}
h2{font-size:clamp(34px,4.4vw,54px);line-height:1.08;letter-spacing:-.035em;margin:0 0 20px}
h3{font-size:24px;margin:0 0 12px}
.intro{color:var(--muted);font-size:18px;max-width:760px}

.empresa,.how-section,.faq-section{padding:90px 0;background:#f6f8f8}
.empresa-grid,.contact-grid,.cta-grid{display:grid;grid-template-columns:1fr .85fr;gap:44px;align-items:center}
.empresa p,.contact-section p{font-size:18px;color:#4f5d67}
.data-card{background:white;border-radius:24px;padding:32px;box-shadow:var(--shadow);border:1px solid var(--line)}
.data-card a{color:var(--green);font-weight:900;text-decoration:underline}

.materials-section{background:#0b151c;color:white;padding:92px 0}
.materials-section h2,.materials-section h3{color:white}
.materials-section .intro{color:#c8d6dd}
.materials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.materials-grid article{background:#142732;border:1px solid rgba(255,255,255,.09);border-radius:24px;padding:28px;min-height:250px}
.icon{width:58px;height:58px;border-radius:18px;background:rgba(22,150,74,.22);display:grid;place-items:center;font-size:28px;margin-bottom:18px}
.materials-grid p{color:#d2dde4}
.materials-grid a{color:#b8f9c5;font-weight:900;text-decoration:underline}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.steps article{background:white;border-radius:22px;padding:26px;border:1px solid var(--line);box-shadow:0 12px 34px rgba(0,0,0,.06)}
.steps strong{display:grid;place-items:center;width:50px;height:50px;border-radius:50%;background:var(--green);color:white;font-size:22px;margin-bottom:18px}
.steps p{color:#52616b}

.gallery-section{padding:92px 0;background:white}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
.photo{height:230px;border-radius:22px;background-size:cover!important;background-position:center!important;position:relative;overflow:hidden;box-shadow:var(--shadow);display:flex;align-items:flex-end;padding:24px;color:white;font-size:27px;font-weight:900;text-shadow:0 4px 18px rgba(0,0,0,.9)}
.photo:before{content:"";position:absolute;inset:0;background:linear-gradient(transparent 25%,rgba(0,0,0,.78))}
.photo span{position:relative;z-index:2}
.fierro{background-image:url('img/fierro.png')}
.chatarra{background-image:url('img/chatarra.jpg')}
.baterias{background-image:url('img/baterias.png')}
.cobre{background-image:url('img/cobre.png')}
.bronce{background-image:url('img/bronce.png')}
.inox{background-image:url('img/inoxidable.png')}

.cta-band{background:linear-gradient(135deg,#08622d,#19a64d);color:white;padding:76px 0}
.cta-band h2{color:white}
.cta-band p{font-size:19px}
.cta-band a{justify-self:end;background:white;color:var(--green);border-radius:999px;padding:17px 28px;font-weight:900;box-shadow:0 18px 44px rgba(0,0,0,.18)}

.faq-section details{background:white;border:1px solid var(--line);border-radius:18px;margin:14px 0;padding:20px 24px}
.faq-section summary{cursor:pointer;font-weight:900;font-size:19px}
.faq-section p{color:#53616b}

.contact-section{padding:92px 0;background:linear-gradient(135deg,#eaf8ee,#fff)}

.footer{background:#071017;color:#dae8ee}
.footer-grid{display:grid;grid-template-columns:1.2fr .7fr 1fr;gap:32px;padding:46px 0}
.footer a{display:block;color:#dae8ee;margin:7px 0}
.footer p{color:#aebdc7}
.footer-bottom{text-align:center;padding:18px;border-top:1px solid rgba(255,255,255,.08);color:#9fb0bb}

.float-whatsapp,.float-map{position:fixed;z-index:100;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;font-size:26px;box-shadow:0 14px 34px rgba(0,0,0,.24)}
.float-whatsapp{left:18px;bottom:18px;background:#25d366;color:white}
.float-map{right:18px;bottom:18px;background:white}

@media(max-width:1120px){
  .top-green-inner{font-size:12px}
  .green-services-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .materials-grid,.gallery-grid{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:860px){
  .top-green{display:none}
  .menu-btn{display:block}
  .menu{display:none;position:absolute;left:4%;right:4%;top:88px;background:white;box-shadow:var(--shadow);border-radius:20px;padding:18px;flex-direction:column;align-items:flex-start}
  .menu.open{display:flex}
  .main-header{top:0}
  .header-inner{padding:12px 0}
  .logo-wrap img{width:70px;height:48px}
  .logo-wrap strong{font-size:22px}
  .hero-main{min-height:auto}
  .hero-main-grid,.empresa-grid,.contact-grid,.cta-grid{grid-template-columns:1fr}
  .hero-copy h1{font-size:44px}
  .hero-copy p{font-size:18px}
  .hero-buttons .btn{width:100%}
  .quote-card{padding:26px}
  .quote-card img{width:190px;height:90px}
  .green-services-grid,.materials-grid,.gallery-grid,.steps,.footer-grid{grid-template-columns:1fr}
  .green-services article{grid-template-columns:76px 1fr}
  .cta-band a{justify-self:start}
  .float-whatsapp,.float-map{width:50px;height:50px}
}