/* ==========================================================================
   FORSETI — Design tokens
   Paleta: grafite azulado + aço + âmbar (luz de letreiro luminoso à noite)
   Display: Big Shoulders Display (evoca letra-caixa de fachada)
   Corpo: IBM Plex Sans · Rótulos técnicos: IBM Plex Mono
   ========================================================================== */

:root{
  --bg:        #14171B;
  --bg-2:      #1B1F24;
  --panel:     #20252B;
  --line:      #333B43;
  --steel:     #8B96A1;
  --steel-lt:  #B7BFC7;
  --white:     #F4F5F2;

  --paper:     #ECEEEA;
  --paper-2:   #E2E5DF;
  --ink:       #14171B;
  --ink-soft:  #4B5359;

  --accent:      #FF7A29;
  --accent-dim:  #C75A19;
  --accent-glow: rgba(255,122,41,.55);

  --font-display: "Big Shoulders Display", sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --wrap: 1220px;
  --radius: 2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-family:var(--font-display); font-weight:800; letter-spacing:.01em; }
p{ margin:0 0 1em; }

.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 28px; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:8px; padding:12px 22px; border-radius:var(--radius);
  font-family:var(--font-mono); font-size:13px; letter-spacing:.04em; text-transform:uppercase;
  border:1px solid transparent; cursor:pointer; white-space:nowrap;
  transition:transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn-lg{ padding:16px 30px; font-size:14px; }
.btn-block{ width:100%; }
.btn-accent{ background:var(--accent); color:#181008; box-shadow:0 0 0 0 var(--accent-glow); }
.btn-accent:hover{ background:#FF8B47; box-shadow:0 6px 24px -6px var(--accent-glow); }
.btn-outline{ border-color:rgba(244,245,242,.35); color:var(--white); }
.btn-outline:hover{ border-color:var(--white); }
.btn-ghost{ color:var(--steel-lt); font-family:var(--font-mono); font-size:13px; letter-spacing:.03em; padding:10px 6px; }
.btn-ghost:hover{ color:var(--white); }

/* ---------- eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--accent); margin:0 0 14px; display:flex; align-items:center; gap:8px;
}
.eyebrow-tick{ color:var(--accent); }
.eyebrow-dark{ color:var(--accent-dim); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(20,23,27,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; }
.brand-logo{
  height:42px; width:auto; display:block;
}
.footer-logo{ height:52px; }
.brand-mark{ font-family:var(--font-display); font-size:26px; font-weight:900; letter-spacing:.03em; }
.brand-sub{ font-family:var(--font-mono); font-size:9.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--steel); }

.nav-desktop{ display:flex; gap:34px; }
.nav-desktop a{
  font-family:var(--font-mono); font-size:13px; letter-spacing:.03em; text-transform:uppercase;
  color:var(--steel-lt); position:relative; padding:6px 0;
}
.nav-desktop a:hover{ color:var(--white); }
.nav-desktop a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:2px; background:var(--accent);
  transition:right .25s ease;
}
.nav-desktop a:hover::after{ right:0; }

.header-actions{ display:flex; align-items:center; gap:18px; }
.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:6px; }
.nav-toggle span{ width:22px; height:2px; background:var(--white); display:block; }

.nav-mobile{
  display:none; flex-direction:column; gap:2px; background:var(--bg-2);
  border-bottom:1px solid var(--line); padding:8px 28px 20px;
}
.nav-mobile a{
  padding:14px 0; border-bottom:1px solid var(--line); font-family:var(--font-mono);
  font-size:14px; letter-spacing:.03em; text-transform:uppercase; color:var(--steel-lt);
}
.nav-mobile a.btn{ border:none; margin-top:14px; text-align:center; }
.nav-mobile.open{ display:flex; }

@media (max-width:900px){
  .nav-desktop, .header-actions .btn-ghost, .header-actions .btn-accent{ display:none; }
  .nav-toggle{ display:flex; }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{ position:relative; overflow:hidden; padding-top:96px; }
.hero-grid{
  position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(139,150,161,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,150,161,.08) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 90%);
}
.hero-inner{ position:relative; padding:64px 28px 90px; }

.dim-frame{ position:relative; padding:34px 0 0 26px; border-left:1px dashed rgba(139,150,161,.5); max-width:820px; }
.dim-frame::before{
  content:""; position:absolute; left:-5px; top:0; width:9px; height:9px; border-radius:50%;
  background:var(--accent); box-shadow:0 0 12px var(--accent-glow);
}

.hero-title{
  font-size:clamp(42px, 8vw, 92px); line-height:.98; margin:0 0 22px; text-transform:uppercase;
}
.glow-text{
  color:var(--white);
  text-shadow:0 0 10px var(--accent-glow), 0 0 34px rgba(255,122,41,.25);
  animation:flicker 2.6s ease-in-out .3s 1;
}
@keyframes flicker{
  0%{ opacity:0; text-shadow:none; }
  8%{ opacity:1; text-shadow:0 0 10px var(--accent-glow),0 0 34px rgba(255,122,41,.25); }
  20%{ opacity:.4; text-shadow:none; }
  24%{ opacity:1; text-shadow:0 0 10px var(--accent-glow),0 0 34px rgba(255,122,41,.25); }
  100%{ opacity:1; text-shadow:0 0 10px var(--accent-glow),0 0 34px rgba(255,122,41,.25); }
}
.hero-lede{ font-size:18px; color:var(--steel-lt); max-width:520px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-top:28px; }

.stat-strip{ border-top:1px solid var(--line); background:var(--bg-2); }
.stat-strip-inner{ display:flex; flex-wrap:wrap; align-items:center; padding:26px 28px; gap:22px; }
.stat{ display:flex; flex-direction:column; gap:4px; }
.stat-num{ font-family:var(--font-display); font-size:26px; font-weight:800; color:var(--accent); }
.stat-label{ font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--steel); }
.stat-div{ width:1px; height:30px; background:var(--line); }
@media (max-width:700px){ .stat-div{ display:none; } }

/* ==========================================================================
   SECTIONS — shared
   ========================================================================== */
.section{ padding:100px 0; }
.section-dark{ background:var(--bg); }
.section-paper{ background:var(--paper); color:var(--ink); }
.section-paper .eyebrow{ color:var(--accent-dim); }

.section-head{ max-width:720px; margin-bottom:52px; }
.section-title{ font-size:clamp(32px,4.6vw,52px); text-transform:uppercase; line-height:1.02; }
.section-title-light{ color:var(--white); }
.section-intro{ margin-top:18px; font-size:17px; color:var(--steel-lt); }
.section-intro-dark{ color:var(--ink-soft); }

/* ---------- intro / A Forseti ---------- */
.intro{ padding:80px 0; border-bottom:1px solid var(--line); }
.intro-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:64px; align-items:start; }
.intro-text{ font-size:21px; font-weight:500; color:var(--white); max-width:520px; }
.link-arrow{ font-family:var(--font-mono); font-size:13px; text-transform:uppercase; letter-spacing:.04em; color:var(--accent); display:inline-flex; gap:6px; }
.link-arrow span{ transition:transform .2s ease; }
.link-arrow:hover span{ transform:translateX(4px); }

.mini-services{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:8px; }
.mini-service{
  display:flex; flex-direction:column; align-items:center; gap:10px; text-align:center;
  background:var(--panel); border:1px solid var(--line); padding:20px 8px; border-radius:var(--radius);
  transition:border-color .2s ease, transform .2s ease;
}
.mini-service img{ width:36px; height:36px; object-fit:contain; filter:brightness(0) invert(1) opacity(.85); }
.mini-service span{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.03em; color:var(--steel-lt); }
.mini-service:hover{ border-color:var(--accent); transform:translateY(-3px); }

@media (max-width:820px){
  .intro-grid{ grid-template-columns:1fr; gap:40px; }
  .mini-services{ grid-template-columns:repeat(4,1fr); }
}
@media (max-width:520px){ .mini-services{ grid-template-columns:repeat(2,1fr); } }

/* ---------- Quem somos ---------- */
.empresa-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; margin-bottom:80px; }
.empresa-text p{ color:var(--ink-soft); font-size:16px; }
.lead-paragraph{ font-size:19px; font-weight:600; color:var(--ink); }
.empresa-collage{ position:relative; }
.collage-a{ border-radius:var(--radius); box-shadow:0 20px 50px -20px rgba(20,23,27,.35); }
.collage-b{
  position:absolute; width:44%; right:-6%; bottom:-14%; border:6px solid var(--paper);
  box-shadow:0 20px 40px -14px rgba(20,23,27,.4); border-radius:var(--radius);
}
@media (max-width:820px){
  .empresa-grid{ grid-template-columns:1fr; gap:56px; }
  .empresa-collage{ margin-top:20px; }
  .collage-b{ right:0; bottom:-8%; width:48%; }
}

.mvv-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--line); border:1px solid var(--line); }
.mvv-card{ background:var(--paper); padding:38px 30px; }
.mvv-card img{ width:38px; height:38px; object-fit:contain; margin-bottom:16px; }
.mvv-card h3{ font-size:22px; text-transform:uppercase; margin-bottom:10px; }
.mvv-card p{ color:var(--ink-soft); font-size:15px; margin:0; }
@media (max-width:820px){ .mvv-grid{ grid-template-columns:1fr; } }

/* ---------- Serviços ---------- */
.tag-list{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom:56px; }
.tag-list li{
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.03em; text-transform:uppercase;
  color:var(--steel-lt); border:1px solid var(--line); padding:9px 16px; border-radius:100px;
}
.service-banner{ margin-bottom:56px; border-radius:var(--radius); overflow:hidden; border:1px solid var(--line); }
.service-banner img{ width:100%; height:380px; object-fit:cover; filter:grayscale(.15) contrast(1.05); }

.service-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-bottom:64px; }
.service-card{ background:var(--bg-2); padding:34px 26px; position:relative; }
.service-index{ font-family:var(--font-mono); font-size:12px; color:var(--accent); display:block; margin-bottom:22px; }
.service-card img{ width:40px; height:40px; object-fit:contain; margin-bottom:18px; filter:brightness(0) invert(1) opacity(.9); }
.service-card h3{ font-size:22px; text-transform:uppercase; margin-bottom:10px; color:var(--white); }
.service-card p{ color:var(--steel); font-size:14.5px; margin:0; }
@media (max-width:900px){ .service-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .service-grid{ grid-template-columns:1fr; } }

.case-cta{
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
  background:var(--panel); border:1px solid var(--line); padding:36px 40px; border-radius:var(--radius);
}
.case-cta-text{ font-family:var(--font-display); font-size:26px; text-transform:uppercase; margin:0; color:var(--white); }

/* ---------- Portfólio ---------- */
.gallery{ display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }
.gallery-item{
  border:0; padding:0; background:none; cursor:zoom-in; overflow:hidden; border-radius:var(--radius);
  aspect-ratio:1/1;
}
.gallery-item img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease, filter .5s ease; }
.gallery-item:hover img{ transform:scale(1.06); }
.gallery-item:nth-child(5),
.gallery-item:nth-child(9){ grid-column:span 2; grid-row:span 2; }
@media (max-width:900px){
  .gallery{ grid-template-columns:repeat(3,1fr); }
  .gallery-item:nth-child(5),.gallery-item:nth-child(9){ grid-column:span 1; grid-row:span 1; }
}
@media (max-width:560px){ .gallery{ grid-template-columns:repeat(2,1fr); } }

.lightbox{
  position:fixed; inset:0; background:rgba(10,11,13,.94); display:none; align-items:center; justify-content:center;
  z-index:200; padding:40px;
}
.lightbox.open{ display:flex; }
.lightbox img{ max-width:100%; max-height:88vh; border-radius:var(--radius); }
.lightbox-close{
  position:absolute; top:22px; right:28px; background:none; border:1px solid var(--line); color:var(--white);
  width:42px; height:42px; border-radius:50%; cursor:pointer; font-size:16px;
}

/* ---------- Contato ---------- */
.contato{ position:relative; }
.dim-frame-2{
  position:absolute; top:0; left:0; right:0; height:1px;
  background:repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
}
.contato-grid{ display:grid; grid-template-columns:1fr 1fr; gap:70px; padding-top:20px; }
.contato-big{ font-family:var(--font-display); font-size:clamp(26px,3vw,34px); margin:6px 0; }
.contato-big a{ color:var(--white); }
.contato-big a:hover{ color:var(--accent); }
.contato-email{ font-size:clamp(18px,2vw,22px); word-break:break-all; }
address{ font-style:normal; color:var(--steel-lt); margin:26px 0 28px; line-height:1.7; }
.social-row{ display:flex; gap:12px; }
.social-row a{
  width:42px; height:42px; border:1px solid var(--line); border-radius:50%; display:flex;
  align-items:center; justify-content:center; color:var(--steel-lt); transition:all .2s ease;
}
.social-row svg{ width:18px; height:18px; }
.social-row a:hover{ border-color:var(--accent); color:var(--accent); transform:translateY(-2px); }

.contato-form{ background:var(--panel); border:1px solid var(--line); padding:38px; border-radius:var(--radius); display:flex; flex-direction:column; gap:18px; }
.contato-form label{ font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--steel); display:flex; flex-direction:column; gap:8px; }
.contato-form input, .contato-form textarea{
  font-family:var(--font-body); font-size:15px; background:var(--bg-2); border:1px solid var(--line);
  color:var(--white); padding:13px 14px; border-radius:var(--radius); resize:vertical;
}
.contato-form input:focus, .contato-form textarea:focus{ outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent); }
.form-note{ font-size:12.5px; color:var(--steel); margin:0; text-align:center; }

.map-wrap{ margin-top:70px; border-top:1px solid var(--line); height:360px; }
.map-wrap iframe{ width:100%; height:100%; border:0; filter:grayscale(.4) invert(.92) contrast(.9); }

@media (max-width:900px){ .contato-grid{ grid-template-columns:1fr; gap:48px; } }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ background:#0F1216; border-top:1px solid var(--line); padding-top:64px; }
.footer-inner{ display:grid; grid-template-columns:1.2fr 2fr; gap:50px; padding-bottom:50px; border-bottom:1px solid var(--line); }
.footer-brand{ display:flex; flex-direction:column; align-items:flex-start; gap:4px; }
.footer-brand .brand-mark{ font-size:24px; }
.footer-cols{ display:grid; grid-template-columns:repeat(3,1fr); gap:30px; }
.footer-cols h4{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel); margin-bottom:16px; }
.footer-cols a, .footer-cols span{ display:block; color:var(--steel-lt); font-size:14px; margin-bottom:10px; }
.footer-cols a:hover{ color:var(--accent); }
.footer-bottom{ padding:24px 28px; font-family:var(--font-mono); font-size:12px; color:var(--steel); }
@media (max-width:820px){ .footer-inner{ grid-template-columns:1fr; } .footer-cols{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-cols{ grid-template-columns:1fr; } }

/* ==========================================================================
   FAB + reveal animations
   ========================================================================== */
.fab-whatsapp{
  position:fixed; bottom:24px; right:24px; width:56px; height:56px; border-radius:50%;
  background:var(--accent); color:#181008; display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 30px -8px rgba(255,122,41,.6); z-index:60; transition:transform .2s ease;
}
.fab-whatsapp svg{ width:26px; height:26px; }
.fab-whatsapp:hover{ transform:scale(1.08); }

[data-reveal]{ opacity:0; transform:translateY(22px); transition:opacity .7s ease, transform .7s ease; }
[data-reveal].in-view{ opacity:1; transform:translateY(0); }