/* Trafosul, site institucional. Identidade: industrial escuro, navy + amarelo. */

:root{
  --bg:#0c1320; --bg2:#101a2b; --panel:#16202f; --line:#233246;
  --yellow:#f5b400; --yellow-dark:#d99e00;
  --text:#e9edf4; --muted:#8fa0b5; --muted2:#6b7d94;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Barlow',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;font-size:17px}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:'Barlow Condensed',sans-serif;font-weight:700;letter-spacing:.5px;text-transform:uppercase;line-height:1.08}

::selection{background:var(--yellow);color:#131313}

.rv{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s cubic-bezier(.22,.61,.36,1)}
.rv.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.hero .tag,.hero h1,.hero p,.hero .actions{animation:none}}

/* Header */
header{position:sticky;top:0;background:rgba(12,19,32,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:50;transition:box-shadow .3s}
header.rolou{box-shadow:0 8px 28px rgba(0,0,0,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--text)}
.brand img{height:46px;width:46px;border-radius:50%;object-fit:contain;border:1px solid var(--line);background:#fff;padding:5px}
.brand b{font-family:'Barlow Condensed',sans-serif;font-size:1.5rem;font-weight:700;letter-spacing:2.5px}
nav ul{display:flex;gap:30px;list-style:none}
nav a{position:relative;color:var(--muted);text-decoration:none;font-size:.83rem;font-weight:600;text-transform:uppercase;letter-spacing:1.8px;padding:6px 0}
nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--yellow);transition:width .25s}
nav a:hover{color:var(--text)}
nav a:hover::after{width:100%}
.btn{display:inline-block;background:var(--yellow);color:#131313;padding:15px 32px;font-weight:700;text-decoration:none;text-transform:uppercase;letter-spacing:1.5px;font-size:.82rem;border:none;cursor:pointer;clip-path:polygon(9px 0,100% 0,calc(100% - 9px) 100%,0 100%);transition:background .2s}
.btn{position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);transition:left .45s ease}
.btn:hover{background:var(--yellow-dark)}
.btn:hover::after{left:130%}
.btn-ghost{background:transparent;border:1px solid rgba(233,237,244,.35);color:var(--text);clip-path:none;transition:border-color .2s,color .2s}
.btn-ghost:hover{background:transparent;border-color:var(--yellow);color:var(--yellow)}
.menu-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:8px}
.menu-toggle svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:2}

/* Hero */
.hero{min-height:92vh;display:flex;align-items:flex-end;position:relative;background:
  linear-gradient(180deg,rgba(12,19,32,.62) 0%,rgba(12,19,32,.55) 45%,rgba(12,19,32,.96) 100%),
  url('../img/obras/hero-aerea.webp') center center/cover no-repeat;
  padding:170px 0 110px}
@keyframes sobe{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.hero .tag,.hero h1,.hero p,.hero .actions{animation:sobe .7s cubic-bezier(.22,.61,.36,1) backwards}
.hero h1{animation-delay:.12s}
.hero p{animation-delay:.24s}
.hero .actions{animation-delay:.36s}
.hero .tag{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(245,180,0,.55);background:rgba(12,19,32,.55);color:var(--yellow);padding:8px 16px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:2.5px;margin-bottom:26px}
.hero .tag svg{width:13px;height:13px;fill:var(--yellow)}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);max-width:800px;font-weight:800}
.hero h1 em{color:var(--yellow);font-style:normal}
.hero p{max-width:580px;color:#c3cddb;font-size:1.12rem;margin:26px 0 38px}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap}
.hazard{position:absolute;left:0;right:0;bottom:0;height:10px;background:repeating-linear-gradient(-45deg,var(--yellow),var(--yellow) 16px,#131313 16px,#131313 32px)}

/* Faixa de destaques */
.stats{background:var(--bg2);border-bottom:1px solid var(--line);padding:56px 0}
.stats .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:34px}
.stats .item{border-left:2px solid var(--yellow);padding-left:20px}
.stats strong{display:block;font-family:'Barlow Condensed',sans-serif;font-size:2.5rem;font-weight:700;color:#fff;line-height:1.1;letter-spacing:1px}
.stats span{display:block;margin-top:4px;color:var(--muted2);font-size:.78rem;text-transform:uppercase;letter-spacing:2px}

/* Secoes */
section{padding:100px 0}
.kicker{display:inline-flex;align-items:center;gap:12px;color:var(--yellow);font-weight:700;text-transform:uppercase;letter-spacing:3.5px;font-size:.72rem}
.kicker::before{content:"";width:34px;height:2px;background:var(--yellow)}
h2{font-size:clamp(2rem,4vw,3rem);margin:14px 0 18px}
.lead{color:var(--muted);max-width:640px;margin-bottom:54px;font-size:1.05rem}

/* Servicos */
.service{display:grid;grid-template-columns:110px 1.1fr 1.3fr;gap:30px;padding:38px 10px;border-top:1px solid var(--line);align-items:start;transition:background .25s}
.service:last-of-type{border-bottom:1px solid var(--line)}
.service:hover{background:rgba(245,180,0,.04)}
.service .num{font-family:'Barlow Condensed',sans-serif;font-size:1.6rem;font-weight:600;color:var(--muted2);transition:color .25s}
.service:hover .num{color:var(--yellow);transform:translateX(6px)}
.service .num{transition:color .25s,transform .3s cubic-bezier(.22,.61,.36,1)}
.service h3{transition:color .25s}
.service:hover h3{color:var(--yellow)}
.service h3{font-size:1.35rem;font-weight:700;padding-top:2px}
.service p{color:var(--muted);font-size:.98rem}

/* Diferenciais */
.difs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px}
.dif{background:var(--panel);border:1px solid var(--line);border-top:2px solid var(--yellow);padding:28px 24px;transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s,border-color .3s}
.dif:hover{transform:translateY(-6px);box-shadow:0 16px 34px rgba(0,0,0,.35);border-color:var(--yellow)}
.dif svg{transition:transform .35s cubic-bezier(.22,.61,.36,1)}
.dif:hover svg{transform:scale(1.12) rotate(-4deg)}
.dif svg{width:34px;height:34px;fill:none;stroke:var(--yellow);stroke-width:1.6;stroke-linejoin:round;stroke-linecap:round;margin-bottom:16px}
.dif h3{font-size:1.05rem;margin-bottom:8px}
.dif p{color:var(--muted);font-size:.9rem}

/* Sobre / Historia */
.about{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about .split{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:start}
.about .texto p{color:var(--muted);margin-bottom:20px;font-size:1rem}
.about .texto p strong{color:var(--text);font-weight:600}
.about .foto{position:sticky;top:110px}
.about .foto .frame{position:relative}
.about .foto .frame::after{content:"";position:absolute;inset:18px -18px -18px 18px;border:2px solid var(--yellow);z-index:0}
.about .foto img{position:relative;z-index:1;width:100%;display:block}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tags span{border:1px solid var(--line);color:var(--muted);padding:9px 18px;font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:1.8px}
.quote{position:relative;margin-top:38px;padding:26px 30px 26px 34px;background:var(--panel);border-left:3px solid var(--yellow)}
.quote p{font-family:'Barlow Condensed',sans-serif;font-size:1.5rem;font-weight:600;color:#fff;line-height:1.3}

/* Parceiros (faixa animada) */
.parceiros .lead{margin-bottom:44px}
.marquee{overflow:hidden;position:relative;padding:4px 0}
.marquee .track{display:flex;gap:18px;width:max-content;animation:marquee 38s linear infinite;will-change:transform}
.marquee:hover .track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(calc(-50% - 9px))}}
.logo-card{background:#fff;flex:0 0 auto;width:240px;padding:20px;display:flex;align-items:center;justify-content:center;height:120px;border-radius:4px;transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s}
.logo-card:hover{transform:translateY(-5px);box-shadow:0 12px 28px rgba(0,0,0,.35)}
.logo-card img{max-height:78px;max-width:196px;object-fit:contain}
@media(prefers-reduced-motion:reduce){.marquee .track{animation:none;flex-wrap:wrap;justify-content:center;width:auto}}

/* Portfolio mosaico */
.portfolio .grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:190px;grid-auto-flow:dense;gap:14px}
.portfolio figure{overflow:hidden;position:relative;border:1px solid var(--line)}
.portfolio figure:nth-child(1){grid-column:span 2;grid-row:span 2}
.portfolio figure:nth-child(4){grid-row:span 2}
.portfolio img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.portfolio figure:hover img{transform:scale(1.05)}
.portfolio figure{transition:border-color .3s}
.portfolio figure:hover{border-color:var(--yellow)}

/* Listas de obras */
.obras{margin-top:74px;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:start}
.obras h3{font-size:1.35rem;padding-bottom:14px;border-bottom:2px solid var(--yellow);margin-bottom:24px}
.obra-grupo{margin-bottom:26px}
.obra-grupo strong{display:block;color:var(--yellow);font-size:.8rem;text-transform:uppercase;letter-spacing:2px;margin-bottom:10px}
.obra-grupo ul{list-style:none}
.obra-grupo li{color:var(--muted);padding:7px 0 7px 18px;position:relative;font-size:.97rem;border-bottom:1px solid rgba(35,50,70,.55)}
.obra-grupo li::before{content:"";position:absolute;left:0;top:16px;width:8px;height:2px;background:var(--yellow);transition:width .25s}
.obra-grupo li{transition:color .25s,padding-left .25s}
.obra-grupo li:hover{color:var(--text);padding-left:24px}
.obra-grupo li:hover::before{width:14px}
.obra-item{border-bottom:1px solid rgba(35,50,70,.55);padding:14px 0 14px 0;border-left:2px solid transparent;transition:border-color .25s,padding-left .25s,background .25s}
.obra-item:hover{border-left-color:var(--yellow);padding-left:16px;background:rgba(245,180,0,.03)}
.obra-item b{display:block;color:var(--text);font-size:1rem;margin-bottom:3px}
.obra-item p{color:var(--muted);font-size:.9rem}

/* Faixa "fazer bem feito" */
.banda{position:relative;padding:130px 0;background:
  linear-gradient(rgba(12,19,32,.68),rgba(12,19,32,.68)),
  url('../img/obras/silhueta-linha-viva.webp') center 35%/cover no-repeat;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.banda .frase{font-family:'Barlow Condensed',sans-serif;font-size:clamp(1.9rem,4.5vw,3.2rem);font-weight:700;text-transform:uppercase;color:#fff;line-height:1.15;margin-bottom:30px}
.banda .frase::after{content:"";display:block;width:64px;height:3px;background:var(--yellow);margin:22px auto 0}

/* Mapa e estados */
.estados{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}
.estado{border:1px solid var(--line);background:var(--panel);padding:18px 20px;transition:transform .3s cubic-bezier(.22,.61,.36,1),border-color .3s}
.estado:hover{transform:translateY(-4px);border-color:var(--yellow)}
.estado strong{display:block;font-family:'Barlow Condensed',sans-serif;font-size:1.7rem;font-weight:700;color:var(--yellow);letter-spacing:1px}
.estado span{color:var(--muted);font-size:.85rem}
.map-wrap{border:1px solid var(--line);background:var(--panel);padding:10px}
.map-wrap iframe{display:block;width:100%;height:430px;border:0;filter:grayscale(.35) contrast(1.02)}

/* Instagram */
.insta{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;padding:100px 0}
.insta .kicker{justify-content:center}
.insta .kicker::before{display:none}
.insta h2{margin-bottom:10px}
.insta p{color:var(--muted);max-width:520px;margin:0 auto 34px}
.insta-embed{max-width:1000px;margin:0 auto 34px;border:1px solid var(--line);background:#fff;padding:8px}
.insta-embed iframe{display:block;width:100%;height:720px;border:0}
.insta .btn-insta{display:inline-flex;align-items:center;gap:11px;border:1px solid var(--line);color:var(--text);text-decoration:none;padding:15px 30px;font-weight:600;text-transform:uppercase;letter-spacing:1.8px;font-size:.82rem;transition:border-color .25s,color .25s}
.insta .btn-insta:hover{border-color:var(--yellow);color:var(--yellow)}
.insta .btn-insta svg{width:19px;height:19px;fill:currentColor}

/* Contato */
.contact .split{display:grid;grid-template-columns:1.1fr .9fr;gap:64px}
.contact form{display:grid;gap:14px}
.contact input,.contact select,.contact textarea{padding:15px 16px;background:var(--panel);border:1px solid var(--line);color:var(--text);font:inherit;font-size:.95rem;width:100%;transition:border-color .2s}
.contact input:focus,.contact select:focus,.contact textarea:focus{outline:none;border-color:var(--yellow)}
.contact input::placeholder,.contact textarea::placeholder{color:var(--muted2)}
.contact select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238fa0b5' stroke-width='2' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.contact form .btn{justify-self:start;margin-top:6px}
.form-nota{color:var(--muted2);font-size:.82rem}
.contact .info p{margin-bottom:22px;color:var(--muted)}
.contact .info strong{display:block;color:#fff;text-transform:uppercase;font-size:.74rem;letter-spacing:2px;margin-bottom:4px}
.contact a{color:var(--yellow);text-decoration:none}

/* Footer */
footer{border-top:1px solid var(--line);background:var(--bg2);font-size:.92rem;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr .8fr;gap:44px;padding-top:64px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .slogan{font-family:'Barlow Condensed',sans-serif;font-size:1.15rem;letter-spacing:.5px;color:var(--muted);max-width:280px}
footer strong{display:block;color:#fff;text-transform:uppercase;font-size:.74rem;letter-spacing:2.5px;margin-bottom:14px;font-weight:700}
footer p{line-height:2}
footer a{color:var(--muted);text-decoration:none;transition:color .2s}
footer a:hover{color:var(--yellow)}
.footer-legal{border-top:1px solid var(--line);padding-top:22px;padding-bottom:26px;font-size:.8rem;color:var(--muted2)}

/* WhatsApp flutuante */
.whats{position:fixed;right:24px;bottom:24px;width:56px;height:56px;border-radius:50%;background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:0 8px 22px rgba(0,0,0,.5);z-index:60;transition:transform .2s}
.whats:hover{transform:scale(1.08)}
.whats::before{content:"";position:absolute;inset:0;border-radius:50%;background:#25d366;opacity:.45;z-index:-1;animation:pulso 2.6s ease-out infinite}
@keyframes pulso{0%{transform:scale(1);opacity:.45}70%{transform:scale(1.65);opacity:0}100%{transform:scale(1.65);opacity:0}}
@media(prefers-reduced-motion:reduce){.whats::before{animation:none}}
.whats svg{width:29px;height:29px;fill:#fff}

/* Responsivo */
@media(max-width:900px){
  nav ul{display:none;position:absolute;top:78px;left:0;right:0;background:var(--bg);flex-direction:column;padding:24px;border-bottom:1px solid var(--line);gap:18px}
  nav ul.open{display:flex}
  .menu-toggle{display:block}
  .nav .btn{display:none}
  .hero{padding:140px 0 90px;min-height:78vh}
  .stats .grid{grid-template-columns:1fr 1fr;gap:26px}
  .about .split,.contact .split{grid-template-columns:1fr}
  .about .foto{position:static}
  .about .foto .frame::after{inset:12px -12px -12px 12px}
  .service{grid-template-columns:52px 1fr;gap:16px;padding:30px 4px}
  .service p{grid-column:2}
  .logo-card{width:200px;height:104px}
  .estados{grid-template-columns:1fr 1fr}
  .difs{grid-template-columns:1fr 1fr;margin-top:44px}
  .portfolio .grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .map-wrap iframe{height:340px}
  .banda{padding:84px 0}
  .insta-embed{padding:5px}
  .insta-embed iframe{height:520px}
  .obras{grid-template-columns:1fr;gap:44px;margin-top:54px}
  .insta{padding:70px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-top:48px;padding-bottom:36px}
  section{padding:70px 0}
}