/* FRV Engenharia: estilo do site.
   Direcao visual: instrumento (topo) + desenho tecnico (secoes internas). */
:root{
  --void:#060a10; --deep:#0a1119; --plate:#0d2138; --plate2:#102b47;
  --line:rgba(126,169,214,.14); --line2:rgba(140,190,235,.22);
  --sky:#9fd0f5; --amber:#f7941e; --ember:#ff7a3d;
  --text:#e9edf3; --dim:#93a3b7; --dim2:#6f8299;
  --f-disp:'Archivo','Segoe UI',sans-serif;
  --f-mono:'IBM Plex Mono','Consolas',monospace;
  --f-body:'Manrope','Segoe UI',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--void);color:var(--text);font-family:var(--f-body);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.c{max-width:1200px;margin:0 auto;padding:0 28px}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}


/* rotulos mono */
.eyebrow{font-family:var(--f-mono);font-size:11px;letter-spacing:3.2px;text-transform:uppercase;color:var(--ember);display:flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor}
.h2{font-family:var(--f-disp);font-weight:800;font-size:clamp(28px,4vw,46px);line-height:1.02;letter-spacing:-.03em;text-transform:uppercase;text-wrap:balance;margin-top:14px;max-width:22ch}
.h2 span{color:transparent;-webkit-text-stroke:1.2px rgba(233,237,243,.6)}
.lead{margin-top:16px;color:var(--dim);font-size:16.5px;max-width:62ch}

/* ===== HEADER ===== */
.hd{position:sticky;top:0;z-index:60;background:rgba(6,10,16,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:background .3s}
.hd.scrolled{background:rgba(6,10,16,.96)}
.hd .c{display:flex;align-items:center;gap:28px;height:64px}
.hd .logo{display:flex;align-items:center;gap:10px}
.hd .logo img{height:30px;width:auto}
.hd .logo small{font-family:var(--f-mono);font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--dim)}
.hd nav{margin-left:auto;display:flex;gap:26px}
.hd nav a{font-family:var(--f-mono);font-size:11.5px;letter-spacing:1.5px;text-transform:uppercase;color:#a9b8c9;transition:color .2s}
.hd nav a:hover{color:var(--amber)}
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:1.8px;text-transform:uppercase;font-weight:600;padding:13px 22px;border-radius:2px;background:var(--amber);color:var(--void);transition:transform .2s,background .2s}
.btn:hover{transform:translateY(-2px);background:#ffa53d}
.btn.ghost{background:transparent;color:#c5d2e0;border:1px solid var(--line2)}
.btn.ghost:hover{border-color:var(--amber);color:var(--text)}
.hd .btn{padding:10px 16px}
@media(max-width:900px){.hd nav{display:none}.hd .btn{margin-left:auto}}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;background:radial-gradient(ellipse 60% 80% at 80% 0%,rgba(255,90,31,.16),transparent 62%),linear-gradient(180deg,var(--void),var(--deep))}
.hero-photo{position:absolute;inset:0;background:url('../img/hero-refinaria.jpg') center 38%/cover;opacity:.14;filter:grayscale(.5) contrast(1.15)}
.grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(126,169,214,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(126,169,214,.07) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 80% 75% at 40% 45%,#000 10%,transparent 78%);mask-image:radial-gradient(ellipse 80% 75% at 40% 45%,#000 10%,transparent 78%)}
.hero .c{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center;padding-top:84px;padding-bottom:72px}
@media(max-width:900px){.hero .c{grid-template-columns:1fr;padding-top:52px;gap:36px}}
.hero h1{font-family:var(--f-disp);font-weight:800;font-size:clamp(40px,6vw,72px);line-height:.96;letter-spacing:-.035em;text-transform:uppercase;margin-top:18px;text-wrap:balance}
.hero h1 span{display:block;color:transparent;-webkit-text-stroke:1.5px rgba(233,237,243,.55)}
.hero .sub{margin-top:22px;font-size:17px;color:#b3c1d1;max-width:46ch}
.hero .desc{margin-top:12px;font-size:14.5px;color:var(--dim);max-width:52ch}
.hero .ctas{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}

/* instrumento */
.inst{position:relative;border:1px solid rgba(126,169,214,.22);border-radius:4px;background:linear-gradient(180deg,rgba(11,18,27,.88),rgba(8,13,20,.94));overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.45)}
.inst-top{display:flex;align-items:center;gap:9px;padding:10px 14px;border-bottom:1px solid var(--line);font-family:var(--f-mono);font-size:10.5px;letter-spacing:1.6px;text-transform:uppercase;color:#8fa2b8}
.led{width:6px;height:6px;border-radius:50%;background:#3a4656}
.inst.on .led{background:#4ade80;box-shadow:0 0 8px #4ade80;animation:pulse 2.2s ease-in-out infinite}
.run{font-family:var(--f-mono);font-size:10px;letter-spacing:1.6px;font-weight:600;cursor:pointer;border:1px solid rgba(74,222,128,.55);color:#4ade80;background:rgba(74,222,128,.08);padding:4px 10px;border-radius:2px;min-width:54px}
.inst.on .run{border-color:rgba(255,122,61,.6);color:var(--ember);background:rgba(255,122,61,.08)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.demo{margin-left:auto;background:var(--amber);color:var(--void);padding:3px 7px;border-radius:2px;font-size:9px;font-weight:600;letter-spacing:1.4px}
.inst canvas{display:block;width:100%;height:190px}
.reads{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.reads div{padding:12px 14px;border-right:1px solid var(--line)}
.reads div:last-child{border-right:none}
.reads .k{font-family:var(--f-mono);font-size:9.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--dim2)}
.reads .v{font-family:var(--f-mono);font-size:21px;font-weight:500;margin-top:3px;font-variant-numeric:tabular-nums}
.reads .v u{text-decoration:none;font-size:11px;color:#8fa2b8;margin-left:3px}

/* faixa de setores */
.setores{position:relative;z-index:2;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(6,10,16,.6)}
.setores .c{display:grid;grid-template-columns:auto repeat(4,1fr);align-items:stretch}
.setores .lbl{font-family:var(--f-mono);font-size:10px;letter-spacing:2.4px;text-transform:uppercase;color:var(--dim2);padding:20px 26px 20px 0;display:flex;align-items:center;border-right:1px solid var(--line)}
.setor{padding:20px 22px;border-right:1px solid var(--line);display:flex;align-items:baseline;gap:12px;transition:background .25s}
.setor:last-child{border-right:none}
.setor:hover{background:rgba(247,148,30,.06)}
.setor b{font-family:var(--f-mono);font-size:10.5px;color:var(--ember);font-weight:500}
.setor span{font-family:var(--f-disp);font-weight:700;font-size:15px;letter-spacing:-.005em}
@media(max-width:900px){.setores .c{grid-template-columns:1fr 1fr}.setores .lbl{grid-column:1/-1;border-right:none;border-bottom:1px solid var(--line);padding:14px 0}.setor:nth-child(3){border-right:none}.setor:nth-child(2),.setor:nth-child(3){border-bottom:1px solid var(--line)}}
/* ===== SECOES ===== */
.sec{position:relative;padding:100px 0}
.plate{background:linear-gradient(165deg,var(--plate) 0%,var(--plate2) 50%,#0b1c2f 100%)}
.plate-grid{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(140,190,235,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,235,.08) 1px,transparent 1px),linear-gradient(rgba(140,190,235,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,235,.035) 1px,transparent 1px);background-size:100px 100px,100px 100px,20px 20px,20px 20px}
.sec > .c{position:relative;z-index:1}
@media(max-width:900px){.sec{padding:68px 0}}

/* sobre */
.about{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:60px;margin-top:46px}
@media(max-width:900px){.about{grid-template-columns:1fr;gap:34px}}
.about-txt p{color:#c3d0de;font-size:16.5px;max-width:58ch}
.about-txt p + p{margin-top:18px}
.about-txt strong{color:var(--text);font-weight:600}
.kv{border-top:1px solid var(--line2)}
.kv > div{display:grid;grid-template-columns:128px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line2)}
.kv h3{font-family:var(--f-mono);font-size:10.5px;letter-spacing:2px;text-transform:uppercase;color:var(--amber);font-weight:500;padding-top:3px}
.kv p{color:#c3d0de;font-size:15px}
@media(max-width:560px){.kv > div{grid-template-columns:1fr;gap:6px}}

/* pilares como unifilar */
.uf{margin-top:50px}
.uf svg{width:100%;height:auto;display:block;overflow:visible}
.uf .ln{stroke:var(--sky);stroke-width:1.5;fill:none;opacity:.85}
.uf .hot{stroke:var(--amber);stroke-width:2.2;fill:none}
.uf .bg{fill:var(--plate)}
.uf text{font-family:var(--f-mono);font-size:11px;fill:#a8c4dd;letter-spacing:1px}
.uf text.t-hot{fill:var(--amber)}
.uf text.t-big{font-size:13px;fill:var(--text);letter-spacing:2.5px;font-weight:600}
.uf.armed .d{stroke-dasharray:var(--l);stroke-dashoffset:var(--l)}
.uf.armed.go .d{stroke-dashoffset:0;transition:stroke-dashoffset 1.1s cubic-bezier(.6,0,.3,1) var(--dl,0s)}
.pil{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.pil a{display:block;padding:22px 20px 24px;border:1px solid var(--line2);border-top:2px solid var(--amber);margin:0 10px;background:rgba(6,10,16,.35);transition:background .25s,transform .25s}
.pil a:hover{background:rgba(247,148,30,.08);transform:translateY(-3px)}
.pil b{font-family:var(--f-mono);font-size:10.5px;color:var(--amber);letter-spacing:1.5px;font-weight:500}
.pil h3{font-family:var(--f-disp);font-size:17px;font-weight:700;line-height:1.2;margin-top:8px;letter-spacing:-.01em}
.pil p{font-size:13px;color:var(--dim);margin-top:8px;line-height:1.5}
@media(max-width:760px){.uf svg{display:none}.pil{grid-template-columns:1fr 1fr;gap:14px}.pil a{margin:0}}
@media(max-width:460px){.pil{grid-template-columns:1fr}}

/* cabecalho de grupo (pilar) */
.grp{position:relative;padding:74px 0 10px;overflow:hidden}
.grp .c{display:flex;align-items:flex-end;gap:30px}
.grp-n{font-family:var(--f-disp);font-weight:800;font-size:clamp(84px,12vw,150px);line-height:.78;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.5px rgba(247,148,30,.55)}
.grp .h2{max-width:none}

/* folha de especificacao (servico) */
.spec{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:60px;padding:62px 0;border-top:1px solid var(--line);align-items:start}
.spec.rev .figs{order:-1}
@media(max-width:900px){.spec{grid-template-columns:1fr;gap:30px;padding:48px 0}.spec.rev .figs{order:0}}
.code{font-family:var(--f-mono);font-size:11px;letter-spacing:2.2px;text-transform:uppercase;color:var(--ember)}
.spec h3{font-family:var(--f-disp);font-weight:800;font-size:clamp(24px,2.8vw,32px);line-height:1.08;letter-spacing:-.025em;margin-top:10px;text-wrap:balance}
.spec .sub{font-family:var(--f-mono);font-size:12px;letter-spacing:1px;color:var(--sky);margin-top:10px}
.spec .note{color:var(--dim);font-size:15px;margin-top:12px;max-width:52ch}
.ul{list-style:none;margin-top:22px;border-top:1px solid var(--line)}
.ul li{position:relative;padding:10px 0 10px 24px;border-bottom:1px solid var(--line);font-size:15px;color:#cfd9e4;line-height:1.45}
.ul li::before{content:"";position:absolute;left:0;top:1.3em;width:12px;height:1px;background:var(--amber)}
.ul.cols{columns:2;column-gap:28px}
.ul.cols li{break-inside:avoid}
@media(max-width:560px){.ul.cols{columns:1}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:10px}
.two h4{font-family:var(--f-mono);font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--amber);font-weight:500;margin-top:18px}
.two .ul{margin-top:10px}
.two .ul li{font-size:14px;padding:8px 0 8px 22px}
@media(max-width:560px){.two{grid-template-columns:1fr;gap:0}}

/* figuras com moldura tecnica */
.figs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.figs.one{grid-template-columns:1fr}
figure{position:relative;border:1px solid var(--line2);padding:8px;background:rgba(6,10,16,.5)}
figure::before,figure::after{content:"";position:absolute;width:14px;height:14px;border-color:var(--amber);border-style:solid}
figure::before{top:-1px;left:-1px;border-width:2px 0 0 2px}
figure::after{bottom:-1px;right:-1px;border-width:0 2px 2px 0}
figure img{width:100%;height:300px;object-fit:cover;filter:grayscale(.4) contrast(1.08) brightness(.92);transition:filter .45s}
figure:hover img{filter:none}
.figs.one img{height:480px}
figcaption{font-family:var(--f-mono);font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--dim2);padding:9px 2px 1px;line-height:1.45}
figcaption b{color:var(--sky);font-weight:500}
@media(max-width:560px){figure img{height:220px}.figs.one img{height:300px}}

/* inovacao: modulos */
.mods{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:46px}
@media(max-width:1000px){.mods{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.mods{grid-template-columns:1fr}}
.mod{border:1px solid var(--line2);background:rgba(6,10,16,.55);display:flex;flex-direction:column;transition:border-color .25s,transform .25s}
.mod:hover{border-color:rgba(247,148,30,.6);transform:translateY(-3px)}
.mod-top{display:flex;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--line2);font-family:var(--f-mono);font-size:9.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--dim2)}
.mod-top b{color:var(--amber);font-weight:500}
.mod svg{display:block;width:100%;height:92px;border-bottom:1px solid var(--line2)}
.mod svg .g{stroke:var(--sky);stroke-width:1.4;fill:none;opacity:.85}
.mod svg .h{stroke:var(--amber);stroke-width:1.8;fill:none}
.mod-b{padding:16px 16px 20px}
.mod h3{font-family:var(--f-disp);font-weight:700;font-size:17px;line-height:1.2;letter-spacing:-.01em}
.mod p{font-size:13.5px;color:var(--dim);margin-top:8px;line-height:1.55}

/* contato */
.ct{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:46px;border-top:1px solid var(--line2)}
@media(max-width:900px){.ct{grid-template-columns:1fr}}
.ct > div{padding:28px 28px 30px 0;border-right:1px solid var(--line2);margin-right:28px}
.ct > div:last-child{border-right:none;margin-right:0}
@media(max-width:900px){.ct > div{border-right:none;margin-right:0;border-bottom:1px solid var(--line2)}}
.ct h3{font-family:var(--f-mono);font-size:10.5px;letter-spacing:2px;text-transform:uppercase;color:var(--amber);font-weight:500}
.ct .val{display:block;font-family:var(--f-disp);font-weight:700;font-size:22px;letter-spacing:-.01em;margin:10px 0 18px;overflow-wrap:anywhere}
.ct .val:hover{color:var(--amber)}

/* rodape */
.ft{border-top:1px solid var(--line);padding:46px 0 40px;background:var(--void)}
.ft .c{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.ft img{height:54px;width:auto}
.ft p{font-size:13.5px;color:var(--dim)}
.ft .mono{font-family:var(--f-mono);font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--dim2);margin-left:auto}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .inst.on .led{animation:none}
  .uf.armed .d{stroke-dashoffset:0;transition:none}
  .btn,.pil a,.mod,figure img{transition:none}
}
.mod svg text{font-family:var(--f-mono);font-size:8px;fill:#a8c4dd;letter-spacing:1px}.mod svg text.th{fill:var(--amber)}
[hidden]{display:none!important}

/* banner de cookies */
.ck{position:fixed;left:0;right:0;bottom:0;z-index:80;background:rgba(6,10,16,.96);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line2);padding:16px 0}
.ck .c{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.ck p{flex:1 1 420px;font-size:14px;color:#c3d0de}
.ck-act{display:flex;gap:10px}
.ck .btn{padding:10px 18px;cursor:pointer;border:0}
.ck .btn.ghost{border:1px solid var(--line2)}