/* ==========================================================================
   MEP Engenharia — Barramento Blindado
   Sistema de design institucional. Sem dependências externas de CSS.
   Fontes: Playfair Display (títulos) + Montserrat (texto/UI).
   ========================================================================== */

:root{
  /* Paleta oficial */
  --red:#E32B2B;
  --red-dark:#B71C1C;
  --black:#111111;
  --graphite:#333333;
  --gray:#6B6B6B;
  --gray-light:#F2F2F2;
  --white:#FFFFFF;
  --wa-green:#25D366;
  --wa-green-dark:#1EBE5A;

  --border:#E5E5E5;
  --border-strong:#D1D1D1;

  --maxw:1200px;
  --radius:4px;
  --radius-lg:8px;

  --shadow-sm:0 2px 8px rgba(17,17,17,.06);
  --shadow-md:0 8px 24px rgba(17,17,17,.10);
  --shadow-red:0 4px 12px rgba(227,43,43,.25);

  --font-head:"Playfair Display", Georgia, "Times New Roman", serif;
  --font-body:"Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --header-h:76px;
}

/* Reset ------------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  color:var(--graphite);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
svg{width:1.1em;height:1.1em;flex:0 0 auto;display:inline-block;vertical-align:-.15em}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--black);line-height:1.15;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.25rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.35rem)}
h3{font-size:clamp(1.2rem,2.2vw,1.55rem)}
h4{font-size:1.1rem}
p{margin:0 0 1rem}
strong{color:var(--black);font-weight:600}
:focus-visible{outline:3px solid var(--red);outline-offset:2px;border-radius:2px}

/* Utilitários ------------------------------------------------------------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--tight{padding:48px 0}
.bg-light{background:var(--gray-light)}
.bg-dark{background:var(--black);color:#e8e8e8}
.bg-dark h1,.bg-dark h2,.bg-dark h3,.bg-dark h4{color:#fff}
.text-center{text-align:center}
.eyebrow{
  display:inline-block;font-family:var(--font-body);font-weight:700;
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--red);margin-bottom:12px;
}
.bg-dark .eyebrow{color:#ff9a94}
.lead{font-size:1.12rem;color:var(--gray);max-width:65ch}
.bg-dark .lead{color:#bdbdbd}
.measure{max-width:70ch}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}

/* Skip link --------------------------------------------------------------- */
.skip-link{position:absolute;left:-999px;top:0;background:var(--red);color:#fff;
  padding:10px 16px;z-index:1000;border-radius:0 0 var(--radius) 0}
.skip-link:focus{left:0}

/* Botões ------------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:13px 26px;border-radius:var(--radius);border:2px solid transparent;
  cursor:pointer;transition:background .18s,color .18s,box-shadow .18s,transform .18s;
  line-height:1.2;text-align:center;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-dark);box-shadow:var(--shadow-red)}
.btn-outline{background:transparent;border-color:var(--black);color:var(--black)}
.btn-outline:hover{background:var(--black);color:#fff}
.bg-dark .btn-outline{border-color:#fff;color:#fff}
.bg-dark .btn-outline:hover{background:#fff;color:var(--black)}
.btn-wa{background:var(--wa-green);color:#fff}
.btn-wa:hover{background:var(--wa-green-dark)}
.btn-lg{padding:15px 32px;font-size:1rem}
.btn-block{width:100%}
.btn svg{width:20px;height:20px;flex:0 0 auto}

/* Header ------------------------------------------------------------------ */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--border);
}
.topbar{background:var(--black);color:#cfcfcf;font-size:.8rem}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap}
.topbar a{color:#e6e6e6;display:inline-flex;align-items:center;gap:6px}
.topbar a:hover{color:#fff}
.topbar__group{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.topbar__loc{color:#9a9a9a;display:inline-flex;align-items:center;gap:6px}
.header-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;flex:0 0 auto}
.brand img{height:42px;width:auto}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{
  font-weight:600;font-size:.88rem;color:var(--graphite);padding:9px 10px;border-radius:var(--radius);
  transition:color .15s,background .15s;white-space:nowrap;position:relative;
}
.main-nav a:hover{color:var(--red)}
.main-nav a[aria-current="page"]{color:var(--red)}
.main-nav a[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--red);border-radius:2px;
}
.has-sub{position:relative}
.has-sub>button{
  display:inline-flex;align-items:center;gap:3px;background:none;border:0;cursor:pointer;
  font-family:var(--font-body);font-weight:600;font-size:.88rem;color:var(--graphite);
  padding:9px 10px;border-radius:var(--radius);
}
.has-sub>button:hover,.has-sub:focus-within>button{color:var(--red)}
.has-sub>button svg{width:16px;height:16px;transition:transform .2s}
.submenu{
  position:absolute;left:0;top:calc(100% + 6px);min-width:220px;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);
  padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;list-style:none;margin:0;z-index:50;
}
.has-sub:hover .submenu,.has-sub:focus-within .submenu{opacity:1;visibility:visible;transform:none}
.submenu a{display:block;padding:10px 12px;border-radius:var(--radius);font-size:.9rem}
.submenu a:hover{background:var(--gray-light)}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;background:none;border:1px solid var(--border-strong);border-radius:var(--radius);
  width:46px;height:44px;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle svg{width:26px;height:26px}

/* Mobile nav */
.mobile-nav{display:none}
@media (max-width:1200px){
  .main-nav,.header-cta .btn{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-nav{
    display:block;position:fixed;inset:0 0 0 auto;width:min(360px,86vw);background:#fff;z-index:200;
    transform:translateX(100%);transition:transform .25s ease;box-shadow:var(--shadow-md);
    padding:20px;overflow-y:auto;
  }
  .mobile-nav.open{transform:none}
  body.nav-open{overflow:hidden}
  .mobile-backdrop{position:fixed;inset:0;background:rgba(17,17,17,.45);z-index:150;opacity:0;visibility:hidden;transition:.25s}
  .mobile-backdrop.open{opacity:1;visibility:visible}
  .mobile-nav__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
  .mobile-nav__head img{height:36px}
  .mobile-nav a{display:block;padding:13px 8px;border-bottom:1px solid var(--border);font-weight:600;color:var(--graphite)}
  .mobile-nav a[aria-current="page"]{color:var(--red)}
  .mobile-nav .sub a{padding-left:24px;font-weight:500;font-size:.92rem;color:var(--gray)}
  .mobile-nav .mn-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px}
  .mobile-nav .mn-cta .btn{display:inline-flex}
  .nav-close{background:none;border:0;cursor:pointer;width:42px;height:42px}
  .nav-close svg{width:26px;height:26px}
}

/* Breadcrumb -------------------------------------------------------------- */
.breadcrumb{background:var(--gray-light);border-bottom:1px solid var(--border)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:14px 0;font-size:.82rem;color:var(--gray)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--gray)}
.breadcrumb a:hover{color:var(--red)}
.breadcrumb [aria-current]{color:var(--black);font-weight:600}

/* Hero -------------------------------------------------------------------- */
.hero{position:relative;color:#fff;background:var(--black);overflow:hidden}
.hero__media{position:absolute;inset:0}
.hero__media img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(17,17,17,.92) 0%,rgba(17,17,17,.7) 45%,rgba(17,17,17,.35) 100%)}
.hero .container{position:relative;z-index:2;padding-top:90px;padding-bottom:90px}
.hero h1{color:#fff;max-width:16ch}
.hero p{color:#dcdcdc;max-width:56ch;font-size:1.14rem}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero__accent{position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--red);z-index:3}
.page-hero{background:var(--black);color:#fff;position:relative;overflow:hidden}
.page-hero .container{position:relative;z-index:2;padding:64px 24px}
.page-hero h1{color:#fff}
.page-hero p{color:#cfcfcf;max-width:62ch}
.page-hero__media{position:absolute;inset:0}
.page-hero__media img{width:100%;height:100%;object-fit:cover;opacity:.28}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(17,17,17,.9),rgba(17,17,17,.55))}

/* Grid & cards ------------------------------------------------------------ */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-sm);transition:border-color .18s,box-shadow .18s,transform .18s;height:100%}
.card:hover{border-color:var(--red);box-shadow:var(--shadow-md)}
.card__icon{width:48px;height:48px;border-radius:var(--radius);background:rgba(227,43,43,.1);
  color:var(--red);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card__icon svg{width:26px;height:26px}
.card h3{font-size:1.2rem;margin-bottom:8px}
.card p{color:var(--gray);font-size:.94rem;margin-bottom:0}
.card--link{display:flex;flex-direction:column}
.card--link .card__more{margin-top:16px;color:var(--red);font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:6px}
.card--media{padding:0;overflow:hidden;display:flex;flex-direction:column}
.card--media img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card--media .card__body{padding:22px}
.card--media h3{font-size:1.15rem}

/* Media split ------------------------------------------------------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split--reverse .split__media{order:2}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:28px}.split--reverse .split__media{order:0}}
.split__media img{border-radius:var(--radius-lg);border:1px solid var(--border);width:100%}
.split ul{margin:16px 0 0;padding:0;list-style:none}
.split li{position:relative;padding:8px 0 8px 30px;color:var(--graphite)}
.split li::before{content:"";position:absolute;left:0;top:14px;width:16px;height:16px;border-radius:50%;
  background:var(--red);mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='white' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/></svg>") center/14px no-repeat;
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='white' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/></svg>") center/14px no-repeat;}

/* Numbered steps ---------------------------------------------------------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;position:relative}
.step__num{font-family:var(--font-head);font-weight:700;font-size:1.5rem;color:var(--red);
  width:44px;height:44px;border-radius:var(--radius);background:var(--gray-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h4{margin-bottom:6px}
.step p{color:var(--gray);font-size:.9rem;margin:0}

/* Stat / feature strip ---------------------------------------------------- */
.pill-list{display:flex;flex-wrap:wrap;gap:12px}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:8px 16px;font-size:.85rem;font-weight:600;color:var(--graphite);box-shadow:var(--shadow-sm)}
.pill svg{width:18px;height:18px;color:var(--red)}
.bg-dark .pill{background:#1c1c1c;border-color:#2a2a2a;color:#e8e8e8}

/* CTA band ---------------------------------------------------------------- */
.cta-band{background:var(--black);color:#fff;border-radius:var(--radius-lg);padding:44px;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(227,43,43,.35),transparent 70%)}
.cta-band .inner{position:relative;z-index:2;max-width:640px}
.cta-band h2{color:#fff}
.cta-band p{color:#c9c9c9}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px}

/* Notice / disclaimer ----------------------------------------------------- */
.notice{border-left:4px solid var(--red);background:var(--gray-light);border-radius:0 var(--radius-lg) var(--radius-lg) 0;
  padding:22px 26px;font-size:.9rem;color:var(--graphite)}
.notice strong{color:var(--black)}

/* Forms ------------------------------------------------------------------- */
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(24px,4vw,40px);box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:600px){.form-row{grid-template-columns:1fr}}
.field{margin-bottom:20px}
.field label{display:block;font-weight:600;font-size:.86rem;color:var(--black);margin-bottom:6px}
.field .req{color:var(--red)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:.95rem;color:var(--graphite);background:#fff;
  border:1px solid var(--border-strong);border-radius:var(--radius);padding:12px 14px;min-height:48px;transition:border-color .15s,box-shadow .15s;
}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--red);outline:none;box-shadow:0 0 0 3px rgba(227,43,43,.15)}
.field input[aria-invalid="true"],.field select[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--red)}
.field .error-msg{display:none;color:var(--red-dark);font-size:.8rem;margin-top:5px;font-weight:600}
.field.invalid .error-msg{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--gray);font-weight:400}
.check input{width:18px;height:18px;min-height:18px;margin-top:3px;accent-color:var(--red);flex:0 0 auto}
.check a{color:var(--red);font-weight:600}
.form-status{display:none;padding:14px 16px;border-radius:var(--radius);font-size:.9rem;font-weight:600;margin-bottom:18px}
.form-status.show{display:block}
.form-status.ok{background:rgba(37,211,102,.12);color:#0f7a3d;border:1px solid rgba(37,211,102,.4)}
.form-status.err{background:rgba(227,43,43,.1);color:var(--red-dark);border:1px solid rgba(227,43,43,.35)}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* Contact info list ------------------------------------------------------- */
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:20px}
.info-list li{display:flex;gap:14px;align-items:flex-start}
.info-list .ic{width:44px;height:44px;flex:0 0 auto;border-radius:var(--radius);background:rgba(227,43,43,.1);color:var(--red);display:flex;align-items:center;justify-content:center}
.info-list .ic svg{width:22px;height:22px}
.info-list .lbl{display:block;margin-bottom:3px;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--gray);font-weight:600}
.info-list a[href*="maps"]{display:block;margin-top:8px}
.info-list .val{font-weight:600;color:var(--black);font-size:1rem}
.info-list a.val:hover{color:var(--red)}

/* Footer ------------------------------------------------------------------ */
.site-footer{background:var(--black);color:#b9b9b9;padding:60px 0 0}
.site-footer .container{padding-bottom:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr}}
.site-footer img.f-logo{height:40px;margin-bottom:18px}
.site-footer h4{color:#fff;font-family:var(--font-body);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:10px}
.site-footer a:hover{color:#fff}
.site-footer .muted{font-size:.88rem;line-height:1.7;color:#9a9a9a}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:.9rem}
.footer-contact svg{width:18px;height:18px;color:var(--red);flex:0 0 auto;margin-top:3px}
.footer-bottom{border-top:1px solid #262626;padding:20px 0}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-bottom:0;font-size:.8rem;color:#8a8a8a}
.footer-bottom a:hover{color:#fff}

/* Floating WhatsApp ------------------------------------------------------- */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:120;background:var(--wa-green);color:#fff;
  width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(0,0,0,.28);transition:transform .2s,background .2s}
.wa-float:hover{background:var(--wa-green-dark);transform:scale(1.06)}
.wa-float svg{width:32px;height:32px}
@media (max-width:600px){.wa-float{width:52px;height:52px;right:16px;bottom:16px}.wa-float svg{width:28px;height:28px}}

/* 404 --------------------------------------------------------------------- */
.err-wrap{text-align:center;padding:90px 24px}
.err-wrap .code{font-family:var(--font-head);font-size:clamp(4rem,16vw,9rem);color:var(--red);line-height:1;margin:0}
.err-wrap .links{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px}

/* Article ----------------------------------------------------------------- */
.article{max-width:760px;margin:0 auto}
.article h2{margin-top:2em}
.article h3{margin-top:1.6em}
.article ul,.article ol{margin:0 0 1.2rem;padding-left:1.3rem}
.article li{margin-bottom:.5rem}
.article img{border-radius:var(--radius-lg);border:1px solid var(--border);margin:1.5rem 0}
.article figure{margin:1.6rem 0}
.article figcaption{font-size:.82rem;color:var(--gray);text-align:center;margin-top:8px}
.article .meta{color:var(--gray);font-size:.85rem;margin-bottom:8px}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}