/* =========================================================
   Landing Page — Engenharia, Automação & IoT
   Tema: híbrido moderno (hero escuro + seções claras)
   ========================================================= */

:root{
  --dark:#0b1220;
  --dark-2:#12203d;
  --brand:#22d3ee;
  --brand-2:#34d399;
  --brand-ink:#0e7490;
  --ink:#0f172a;
  --muted:#5b6b82;
  --bg:#ffffff;
  --soft:#f4f7fb;
  --line:#e2e8f0;
  --card:#ffffff;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.16);
  --radius:16px;
  --radius-sm:10px;
  --max:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0 0 .5em;line-height:1.18;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:800}
h3{font-size:1.12rem;font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--brand);color:#04212a;padding:10px 16px;border-radius:0 0 8px 0;z-index:100}
.skip-link:focus{left:0}

/* Botões */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.85em 1.5em;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04212a;box-shadow:0 10px 24px rgba(34,211,238,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(34,211,238,.45)}
.btn-ghost{background:transparent;color:#e2e8f0;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}
.btn-block{width:100%}

/* Cabeçalhos de seção */
.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand-ink);margin-bottom:.7em;
}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.section-head h2{margin-bottom:.35em}
.section-sub{color:var(--muted);margin:0}
.section-dark .eyebrow{color:var(--brand)}
.section-dark .section-sub{color:rgba(226,232,240,.78)}

/* Cabeçalho / Navegação */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(11,18,32,0);backdrop-filter:blur(0);
  transition:background .3s,box-shadow .3s,backdrop-filter .3s;
}
.site-header.is-scrolled{background:rgba(11,18,32,.92);backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(0,0,0,.28)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.6em;color:#fff;font-weight:800}
.brand-tag{font-size:.713rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:rgba(226,232,240,.8);line-height:1.35}
.brand-logo{height:46px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:1.6rem}
.nav a{color:rgba(226,232,240,.85);font-weight:600;font-size:.95rem;transition:color .2s}
.nav a:hover{color:var(--brand)}
.nav-cta{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04212a!important;padding:.55em 1.1em;border-radius:999px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#fff;display:block;transition:transform .3s,opacity .3s}
/* Hero */
.hero{
  position:relative;overflow:hidden;color:#fff;
  padding:150px 0 90px;
  background:
    radial-gradient(1100px 600px at 78% -10%,rgba(34,211,238,.22),transparent 60%),
    radial-gradient(900px 520px at 10% 8%,rgba(52,211,153,.16),transparent 60%),
    linear-gradient(160deg,#0b1220 0%,#12203d 55%,#0b1220 100%);
}
.hero-glow{position:absolute;inset:auto -10% -40% -10%;height:60%;background:radial-gradient(closest-side,rgba(34,211,238,.18),transparent);filter:blur(20px);pointer-events:none}
.hero-inner{position:relative;max-width:900px}
.hero .eyebrow{color:var(--brand)}
.hero h1{color:#fff}
.grad{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(1.02rem,2vw,1.22rem);color:rgba(226,232,240,.9);max-width:760px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 12px}
.hero-badges li{
  font-size:.82rem;font-weight:600;color:rgba(226,232,240,.85);
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:.4em .9em;
  background:rgba(255,255,255,.05);
}

/* Seções base */
.section{padding:96px 0}
.section-soft{background:var(--soft)}
.section-dark{background:linear-gradient(160deg,#0b1220,#12203d);color:#fff}
.section-dark h2{color:#fff}

/* Sobre */
.about-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:44px;align-items:start}
.about-text p{color:#334155}
.about-side{display:grid;gap:14px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 18px;box-shadow:var(--shadow)}
.stat-num{display:block;font-weight:800;font-size:1.15rem;color:var(--brand-ink);letter-spacing:-.01em}
.stat-label{display:block;color:var(--muted);font-size:.9rem;margin-top:2px}
/* Cards de competências */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,270px),1fr));gap:22px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cbe6ef}
.card h3{margin-bottom:.7em}
.card ul li{position:relative;padding-left:20px;color:#334155;font-size:.95rem;margin-bottom:.45em}
.card ul li::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.card-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  color:var(--brand-ink);background:linear-gradient(135deg,rgba(34,211,238,.16),rgba(52,211,153,.16));
}
.card-stack{display:flex;flex-direction:column;justify-content:center}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:.8rem;font-weight:600;color:#0e7490;background:rgba(34,211,238,.12);
  border:1px solid rgba(34,211,238,.3);border-radius:999px;padding:.35em .8em;
}

/* Fluxo (estudo de caso) */
.flow{
  display:flex;align-items:stretch;gap:10px;flex-wrap:wrap;justify-content:center;
  margin-bottom:46px;
}
.flow-step{
  flex:1 1 170px;min-width:150px;background:var(--soft);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:16px;text-align:center;
}
.flow-ico{display:inline-block;font-size:.72rem;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand-ink),var(--brand-2));border-radius:999px;padding:.25em .7em;margin-bottom:8px}
.flow-step strong{display:block;font-size:1rem}
.flow-step small{color:var(--muted);font-size:.82rem;display:block;margin-top:4px;line-height:1.45}
.flow-arrow{display:grid;place-items:center;color:var(--brand);font-weight:800;font-size:1.3rem}

.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:22px}
.case-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border-left:3px solid var(--brand)}
.case-item p{color:#334155;margin:0;font-size:.95rem}

/* Soluções */
.solutions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:24px}
.solution-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.solution-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.solution-tag{
  align-self:flex-start;font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  color:#065f56;background:rgba(52,211,153,.18);border-radius:999px;padding:.32em .8em;margin-bottom:14px;
}
.solution-card h3{margin-bottom:16px}
.pain,.gain{border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:12px;font-size:.93rem}
.pain{background:#fef2f2;border:1px solid #fee2e2}
.gain{background:#f0fdf4;border:1px solid #dcfce7}
.pain p,.gain p{margin:6px 0 0;color:#334155}
.label{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.label-pain{color:#b91c1c}
.label-gain{color:#15803d}
.solution-for{margin:auto 0 0;font-size:.82rem;color:var(--muted);border-top:1px dashed var(--line);padding-top:14px}
/* Diferenciais */
.diff-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:20px}
.diff-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:24px;transition:transform .25s var(--ease),background .25s;
}
.diff-item:hover{transform:translateY(-4px);background:rgba(255,255,255,.09)}
.diff-item h3{color:#fff}
.diff-item p{color:rgba(226,232,240,.78);margin:0;font-size:.95rem}

/* Passos */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:22px;counter-reset:step}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.step-num{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;margin-bottom:14px;
  font-weight:800;color:#04212a;background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.step p{color:#334155;margin:0;font-size:.95rem}

/* Kits */
.kits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:18px}
.kit{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 22px;box-shadow:var(--shadow);border-top:3px solid var(--brand-2)}
.kit h3{margin-bottom:.3em;font-size:1rem}
.kit p{margin:0;color:var(--muted);font-size:.9rem}
.kits-note{max-width:720px;margin:34px auto 0;text-align:center;color:var(--muted);font-size:.92rem}

/* Contato */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:start}
.contact-info{display:grid;gap:14px}
.contact-card{
  display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);padding:16px 18px;
  color:#fff;transition:background .2s,transform .2s;
}
a.contact-card:hover{background:rgba(255,255,255,.1);transform:translateX(3px)}
.contact-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.3rem;color:#04212a;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.contact-card strong{display:block}
.contact-card small{color:rgba(226,232,240,.7)}
.contact-form{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-lg);display:grid;gap:8px}
.contact-form label{font-weight:600;font-size:.88rem;color:#334155}
.contact-form input,.contact-form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font:inherit;font-size:.95rem;color:var(--ink);background:#fff;margin-bottom:6px;
}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid rgba(34,211,238,.5);border-color:var(--brand)}
.contact-form textarea{resize:vertical}
.form-hint{color:var(--muted);font-size:.78rem;text-align:center;margin-top:4px}

/* Rodapé */
.site-footer{background:#080d18;color:rgba(226,232,240,.72);padding:34px 0}
.foot-wrap{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.foot-brand{display:flex;align-items:center;gap:.6em;color:#fff;font-weight:700}
.foot-logo{height:32px;width:auto;display:block}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}
.foot-links a{font-size:.9rem;transition:color .2s}
.foot-links a:hover{color:var(--brand)}
.foot-copy{margin:0;font-size:.82rem;width:100%}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* Responsivo */
@media (max-width:900px){
  .about-grid{grid-template-columns:1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:780px){
  .nav-toggle{display:flex}
  .nav{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(11,18,32,.98);backdrop-filter:blur(10px);padding:10px 20px 20px;
    border-bottom:1px solid rgba(255,255,255,.1);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.25s var(--ease);
  }
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:12px 4px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-cta{text-align:center;margin-top:10px;border-bottom:0!important}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .section{padding:72px 0}
  .hero{padding:120px 0 70px}
  .flow-step{flex:1 1 100%;min-width:0}
  .flow-arrow{transform:rotate(90deg)}
}
@media (min-width:781px) and (max-width:899px){
  .brand-tag{display:none}
}
@media (max-width:520px){
  .section-head{margin-bottom:34px}
  .hero-actions .btn{width:100%}
  .foot-wrap{flex-direction:column;align-items:flex-start}
  .brand-tag{display:none}
}