/* MGM Eletrometalúrgica — grafite + laranja da logo. Estética de catálogo técnico: linhas finas, tabelas, código em mono. */
:root{
  --gray:#4a4a4b;--gray-d:#2d2e30;--gray-dd:#222325;
  --orange:#DE6E30;--orange-d:#B9531A;
  --soft:#F2F3F4;--line:#D8DADD;--text:#44464a;--heading:#222325;
  --container:1160px;--r:3px;
  --f-head:'Archivo','Inter',system-ui,sans-serif;--f-mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:'Inter',system-ui,sans-serif;color:var(--text);line-height:1.6;background:#fff;-webkit-font-smoothing:antialiased;font-size:16px}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}
h1,h2,h3{font-family:var(--f-head);color:var(--heading);line-height:1.1;font-weight:700;letter-spacing:-.01em}
.container{width:min(var(--container),100% - 40px);margin-inline:auto}
section{padding:88px 0}
.bg-soft{background:var(--soft)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
h2{font-size:clamp(1.8rem,3.4vw,2.6rem);margin-bottom:18px}
p+p{margin-top:14px}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:var(--r);font-weight:600;font-size:.95rem;border:1.5px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s;font-family:inherit}
.btn-orange{background:var(--orange);color:#fff}.btn-orange:hover{background:var(--orange-d)}
.btn-line{border-color:rgba(255,255,255,.7);color:#fff}.btn-line:hover{background:#fff;color:var(--gray-d)}
.btn-dark{background:var(--gray-d);color:#fff}.btn-dark:hover{background:#000}
.btn-block{width:100%}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}

/* Cabeçalho */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo img{height:44px;width:auto}
.nav{display:flex;align-items:center;gap:28px;font-size:.93rem;font-weight:500}
.nav a{color:var(--gray-d);transition:color .2s}
.nav a:hover{color:var(--orange)}
.nav .nav-cta{background:var(--gray-d);color:#fff;padding:10px 18px;border-radius:var(--r)}
.nav .nav-cta:hover{background:var(--orange);color:#fff}
.menu-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;align-items:center}
.menu-toggle span{width:24px;height:2px;background:var(--gray-d)}

/* Hero */
.hero{padding:0;color:#fff;background:linear-gradient(90deg,rgba(34,35,37,.93),rgba(34,35,37,.78) 60%,rgba(34,35,37,.6)),url(../assets/img/fabrica.jpg) center 55%/cover no-repeat}
.hero-in{padding:112px 0 84px;max-width:var(--container)}
.chip-logo{display:inline-block;background:#fff;padding:5px 12px;border-radius:var(--r)}.chip-logo img{height:34px;width:auto}
.grp-link{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:3px}.grp-link:hover{color:var(--orange)}
.group-logo{display:inline-block;margin-bottom:18px}.group-logo img{height:60px;width:auto}
.site-footer .chip-logo{margin-top:16px;display:block;width:max-content}.site-footer .grp-link{color:#fff}
.hero h1{color:#fff;font-size:clamp(2.4rem,5.6vw,4.4rem);max-width:760px;font-weight:800;margin-bottom:22px}
.hero-lead{font-size:1.12rem;max-width:560px;color:#dddfe2;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-facts{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.22)}
.hero-facts div{padding:20px 20px 24px 0}
.hero-facts div+div{padding-left:20px;border-left:1px solid rgba(255,255,255,.22)}
.hero-facts dt{font-size:.78rem;color:#b9bcc1;margin-bottom:4px}
.hero-facts dd{font-family:var(--f-head);font-weight:600;font-size:1.08rem;color:#fff}

/* Sobre */
.about{display:grid;grid-template-columns:1.15fr 1fr;gap:72px;align-items:start}
.about-text p{max-width:60ch}
.pillars{border-top:2px solid var(--gray-d)}
.pillars div{padding:18px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:150px 1fr;gap:16px}
.pillars dt{font-family:var(--f-head);font-weight:700;color:var(--heading)}
.pillars dd{font-size:.95rem}

/* Catálogo */
.catalog{background:var(--soft)}
.catalog-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.catalog-head h2{margin-bottom:8px}
.tools{display:flex;gap:16px;justify-content:space-between;align-items:center;flex-wrap:wrap;padding-bottom:20px;border-bottom:2px solid var(--gray-d)}
.filters{display:flex;flex-wrap:wrap;gap:6px}
.filters button{font:inherit;font-size:.88rem;font-weight:500;padding:8px 14px;border:1px solid var(--line);background:#fff;color:var(--gray-d);border-radius:var(--r);cursor:pointer;transition:.15s}
.filters button:hover{border-color:var(--gray-d)}
.filters button[aria-selected="true"]{background:var(--gray-d);border-color:var(--gray-d);color:#fff}
.search input{font:inherit;font-size:.92rem;padding:9px 14px;border:1px solid var(--line);border-radius:var(--r);width:260px;background:#fff}
.search input:focus{outline:0;border-color:var(--orange)}

.prod{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;padding:36px 0;border-bottom:1px solid var(--line)}
.prod[hidden]{display:none}
.prod-fig{background:#fff;border:1px solid var(--line);position:relative;aspect-ratio:4/3;align-self:start;overflow:hidden;display:block}
.prod-fig img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:14px}
.fig-empty{position:absolute;inset:0;display:grid;place-content:center}
.fig-empty{text-align:center;color:var(--gray)}
.fig-empty b{display:block;font-family:var(--f-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.9rem;border:1.5px solid var(--gray);padding:10px 16px;margin-bottom:8px}
.fig-empty span{font-size:.82rem}
.prod-cat{font-family:var(--f-mono);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--orange-d);margin-bottom:6px}
.prod h3{font-size:1.9rem;margin-bottom:4px}
.prod-sub{font-size:.9rem;font-weight:600;color:var(--gray);margin-bottom:12px}
.prod-body>p{max-width:62ch}
.prod-body p+p{margin-top:8px}
.apl b{color:var(--heading)}
.badge{display:inline-block;font-family:var(--f-mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.04em;border:1px solid var(--gray-d);padding:4px 10px;margin:6px 0 10px;color:var(--gray-d)}
.is-prep .prod-fig{background:var(--soft)}

.spec{width:100%;border-collapse:collapse;margin-top:18px;font-size:.92rem}
.spec thead th{background:var(--gray-d);color:#fff;text-align:left;font-weight:600;font-size:.76rem;text-transform:uppercase;letter-spacing:.05em;padding:9px 12px;border-bottom:2px solid var(--orange)}
.spec td,.spec tbody th{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;background:#fff}
.spec tbody th{font-family:var(--f-mono);font-weight:600;color:var(--orange-d)}
.spec tbody tr:nth-child(even) td,.spec tbody tr:nth-child(even) th{background:#f9fafa}
.spec tr.hit td,.spec tr.hit th{background:#fde9dc}
.spec tr.extra{display:none}
.prod.expanded .spec tr.extra{display:table-row}
.more-rows{font:inherit;font-size:.88rem;font-weight:600;margin-top:10px;background:none;border:0;border-bottom:1.5px solid var(--gray-d);color:var(--gray-d);padding:2px 0;cursor:pointer}
.more-rows:hover{color:var(--orange);border-color:var(--orange)}
.meta{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:12px;font-size:.85rem;color:#6b6e73}
.meta b{color:var(--heading);font-weight:600}
.note{font-size:.85rem;color:#6b6e73}
.note.warn{border-left:3px solid var(--orange);background:#fff;padding:10px 14px;color:var(--text);margin-top:12px}
.quote{font:inherit;font-weight:600;font-size:.9rem;margin-top:18px;padding:9px 16px;background:#fff;border:1.5px solid var(--gray-d);color:var(--gray-d);border-radius:var(--r);cursor:pointer;transition:.15s}
.quote:hover{background:var(--orange);border-color:var(--orange);color:#fff}
.empty{padding:40px 0;color:var(--gray)}.empty a{color:var(--orange-d);text-decoration:underline}

/* Aplicações */
.apps{display:grid;grid-template-columns:1fr 1.4fr;gap:72px}
.apps-head p{max-width:40ch}
.apps-list{counter-reset:a;border-top:2px solid var(--gray-d)}
.apps-list li{counter-increment:a;display:grid;grid-template-columns:44px 1fr;column-gap:8px;padding:16px 0;border-bottom:1px solid var(--line)}
.apps-list li::before{content:counter(a,decimal-leading-zero);font-family:var(--f-mono);font-size:.82rem;color:var(--orange-d);grid-row:1/3;padding-top:3px}
.apps-list b{font-family:var(--f-head);color:var(--heading);font-size:1.08rem}
.apps-list span{font-size:.95rem}

/* Grupo */
.group{display:grid;grid-template-columns:1fr 1.5fr;gap:72px}
.group-head p{max-width:38ch}
.group-list{border-top:2px solid var(--gray-d)}
.group-list a{display:grid;grid-template-columns:1fr auto;gap:2px 20px;padding:20px 0;border-bottom:1px solid var(--line);transition:padding .2s}
.group-list a:hover{padding-left:10px}
.group-list b{font-family:var(--f-head);font-size:1.15rem;color:var(--heading)}
.group-list span{grid-column:1;font-size:.93rem}
.group-list i{grid-column:2;grid-row:1/3;align-self:center;font-style:normal;font-weight:600;font-size:.88rem;color:var(--orange-d)}

/* Contato */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:72px;align-items:start}
.contact-grid p{max-width:46ch}
.contact-list{margin-top:28px;border-top:2px solid var(--gray-d)}
.contact-list div{padding:14px 0;border-bottom:1px solid var(--line)}
.contact-list dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:#6b6e73;margin-bottom:2px}
.contact-list dd{color:var(--heading);font-weight:500}
.contact-list a:hover{color:var(--orange-d)}
.form{background:var(--soft);padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:16px;border-top:3px solid var(--orange)}
.form .full{grid-column:1/-1}
.form label{display:block;font-size:.85rem;font-weight:600;color:var(--heading);margin-bottom:5px}
.form input,.form select,.form textarea{width:100%;padding:11px 12px;border:1px solid #bfc2c6;border-radius:var(--r);font:inherit;color:#111;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--orange);box-shadow:0 0 0 3px rgba(222,110,48,.18)}
.form textarea{min-height:130px;resize:vertical}
.form-note{font-size:.82rem;color:#6b6e73;margin-top:8px}

/* Rodapé */
.site-footer{background:var(--gray-dd);color:#a9acb1;padding:64px 0 0;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:44px;padding-bottom:44px}
.site-footer h2{color:#fff;font-size:1rem;font-family:var(--f-mono);font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.f-logo{display:inline-block;background:#fff;padding:10px 14px;margin-bottom:16px;border-radius:var(--r)}.f-logo img{height:42px;width:auto}
.site-footer li{margin-bottom:8px}.site-footer a:hover{color:var(--orange)}
.footer-bottom{border-top:1px solid #38393c;padding:18px 0;font-size:.85rem}

.whats-float{position:fixed;right:18px;bottom:18px;z-index:60;width:58px;height:58px;border-radius:50%;background:#25D366;color:#fff;display:grid;place-items:center;box-shadow:0 4px 14px rgba(0,0,0,.28);transition:transform .2s}
.whats-float:hover{transform:scale(1.07)}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s,transform .6s}.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

@media (max-width:1024px){
  .about,.apps,.group,.contact-grid{gap:44px}
  .hero-facts{grid-template-columns:1fr 1fr}
  .hero-facts div:nth-child(3){padding-left:0;border-left:0}
  .hero-facts div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.22)}
}
@media (max-width:860px){
  section{padding:60px 0}
  .menu-toggle{display:flex}
  .nav{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:0 12px 20px rgba(0,0,0,.1)}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .nav-cta{margin-top:14px;text-align:center;border:0}
  .about,.apps,.group,.contact-grid,.footer-grid,.prod{grid-template-columns:1fr}
  .prod{gap:20px}
  .prod-fig{aspect-ratio:4/3}
  .hero-in{padding:72px 0 56px}
  .search,.search input{width:100%}
  .form{grid-template-columns:1fr;padding:22px}
  .pillars div{grid-template-columns:1fr;gap:2px}
}
@media (max-width:520px){
  .hero-facts{grid-template-columns:1fr}
  .hero-facts div,.hero-facts div+div{padding-left:0;border-left:0}
  .hero-facts div+div{border-top:1px solid rgba(255,255,255,.22)}
  .spec{font-size:.85rem}.spec thead th,.spec td,.spec tbody th{padding:8px}
  .group-list a{grid-template-columns:1fr}.group-list i{grid-column:1;grid-row:auto;margin-top:6px}
}