/* ============================================
   POLIEDRO ENGENHARIA — Esboço modernizado
   Stack: HTML + CSS + JS puro (estático)
   Paleta: azul institucional modernizado
   ============================================ */

:root{
  /* Cores OFICIAIS extraídas da logo do cliente (.cdr) */
  --c-logo-dark:      #134878;   /* face frontal escura do P (cor 1 da marca) */
  --c-logo-mid:       #75A1CA;   /* face lateral média (cor 2 da marca) */
  --c-logo-light:     #A7C4DE;   /* topo claro (cor 3 da marca) */

  /* Paleta institucional baseada nas cores da logo */
  --c-primary:        #134878;   /* identidade principal — vem da logo */
  --c-primary-2:      #1F5F9E;   /* navy médio (interpolação) */
  --c-accent:         #2D7DD2;   /* azul vibrante moderno (CTAs) */
  --c-accent-2:       #75A1CA;   /* azul lateral da logo */
  --c-warm:           #F5A623;   /* amarelo capacete (toque industrial) */

  --c-bg:             #FFFFFF;
  --c-bg-alt:         #F4F7FB;
  --c-bg-dark:        #0A2540;
  --c-text:           #0F172A;
  --c-text-2:         #475569;
  --c-text-muted:     #94A3B8;
  --c-border:         #E2E8F0;
  --c-border-strong:  #CBD5E1;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 24px;

  --shadow-sm:  0 2px 6px rgba(10,37,64,.06);
  --shadow:     0 8px 30px rgba(10,37,64,.08);
  --shadow-lg:  0 24px 60px rgba(10,37,64,.12);

  --container: 1200px;
  --gutter: 24px;

  --font-display: 'Space Grotesk','Inter',system-ui,-apple-system,sans-serif;
  --font-body:    'Inter',system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{ box-sizing:border-box }
html{ scroll-behavior:smooth }
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; height:auto }
a{ color:inherit; text-decoration:none }
button{ font:inherit; cursor:pointer; border:none; background:none }

/* ---------- Tipografia ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.15;
  letter-spacing:-0.02em;
  color:var(--c-primary);
  margin:0 0 .5em;
}
h1{ font-size:clamp(2.4rem, 5vw, 4rem); font-weight:700 }
h2{ font-size:clamp(1.8rem, 3vw, 2.6rem) }
h3{ font-size:1.25rem }
p{ margin:0 0 1em; color:var(--c-text-2) }
.eyebrow{
  display:inline-block;
  font-family:var(--font-display);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--c-accent);
  font-weight:600;
  margin-bottom:1rem;
  position:relative;
  padding-left:42px;
}
.eyebrow::before{
  content:""; position:absolute; left:0; top:50%;
  width:30px; height:1px; background:var(--c-accent);
}

/* ---------- Layout ---------- */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{ padding:96px 0 }
.section--alt{ background:var(--c-bg-alt) }
.section--dark{ background:var(--c-bg-dark); color:#fff }
.section--dark h2,
.section--dark h3{ color:#fff }
.section--dark p{ color:#cdd9e8 }
.grid{ display:grid; gap:32px }
@media(min-width:760px){ .grid--2{ grid-template-columns:repeat(2,1fr) } }
@media(min-width:760px){ .grid--3{ grid-template-columns:repeat(3,1fr) } }
@media(min-width:760px){ .grid--4{ grid-template-columns:repeat(4,1fr) } }

/* ---------- Header ---------- */
.header{
  position:fixed; top:0; left:0; right:0;
  z-index:50;
  padding:18px 0;
  transition:background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-sm);
  padding:12px 0;
}
.header__inner{ display:flex; align-items:center; justify-content:space-between; gap:32px }
.logo{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.25rem;
  letter-spacing:-.01em;
  color:#fff;
  display:flex; align-items:center; gap:12px;
  line-height:1;
}
.header.is-scrolled .logo{ color:var(--c-primary) }
.logo__mark{
  width:38px; height:38px;
  background-image:url('../img/logo-icon-white.png');
  background-size:contain;
  background-repeat:no-repeat;
  background-position:center;
  flex-shrink:0;
  transition:background-image .25s ease;
}
.header.is-scrolled .logo__mark{
  background-image:url('../img/logo-icon-96.png');
}
.logo__text{ display:flex; flex-direction:column; gap:2px }
.logo small{
  font-weight:400; font-size:.62rem;
  letter-spacing:.18em; opacity:.7;
  text-transform:uppercase;
  color:inherit;
}

.nav{ display:flex; align-items:center; gap:28px }
.nav__list{
  display:flex; list-style:none; padding:0; margin:0; gap:24px;
  font-size:.92rem; font-weight:500;
  color:#fff;
}
.header.is-scrolled .nav__list{ color:var(--c-primary) }
.nav__list a{ position:relative; padding:6px 0 }
.nav__list a::after{
  content:""; position:absolute; left:0; bottom:0;
  width:0; height:2px; background:var(--c-accent);
  transition:width .25s ease;
}
.nav__list a:hover::after{ width:100% }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 26px;
  border-radius:999px;
  font-family:var(--font-display);
  font-weight:600; font-size:.92rem;
  transition:all .25s ease;
  white-space:nowrap;
}
.btn--primary{
  background:var(--c-accent);
  color:#fff;
}
.btn--primary:hover{
  background:var(--c-primary);
  transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(45,125,210,.35);
}
.btn--ghost{
  background:transparent;
  color:#fff;
  border:1.5px solid rgba(255,255,255,.4);
}
.btn--ghost:hover{ background:rgba(255,255,255,.1); border-color:#fff }
.btn--dark{
  background:var(--c-primary);
  color:#fff;
}
.btn--dark:hover{ background:var(--c-accent); transform:translateY(-2px) }
.btn svg{ width:16px; height:16px }

.menu-toggle{ display:none }
@media(max-width:880px){
  .nav__list{ display:none }
  .menu-toggle{ display:grid; place-items:center; width:40px; height:40px; color:inherit }
}

/* ---------- Hero (versão mista — padrão) ---------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center;
  background:
    radial-gradient(1200px 600px at 80% 20%, rgba(45,125,210,.18), transparent 60%),
    radial-gradient(900px 500px at 10% 80%, rgba(79,182,229,.12), transparent 60%),
    linear-gradient(135deg, #061a2e 0%, var(--c-primary) 50%, var(--c-primary-2) 100%);
  color:#fff;
  overflow:hidden;
  padding:140px 0 80px;
}
.hero canvas#hero-bg{
  position:absolute; inset:0; width:100%; height:100%;
  z-index:0; opacity:.7;
}
.hero__grid{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero__container{ position:relative; z-index:2; width:100% }
.hero__content{ max-width:760px }
.hero h1{ color:#fff }
.hero h1 .accent{
  background:linear-gradient(120deg,var(--c-accent-2),#a8d4ff);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  display:inline-block;
}
.hero__lead{
  font-size:1.18rem;
  color:#cdd9e8;
  max-width:540px;
  margin-bottom:2rem;
}
.hero__cta{ display:flex; gap:12px; flex-wrap:wrap }

.hero__stats{
  position:relative;
  z-index:2;
  margin-top:64px;
  display:grid; grid-template-columns:repeat(4,1fr); gap:32px;
  border-top:1px solid rgba(255,255,255,.15);
  padding-top:32px;
  max-width:780px;
}
@media(max-width:680px){
  .hero__stats{ grid-template-columns:repeat(2,1fr); gap:20px }
}
.stat__num{
  font-family:var(--font-display);
  font-size:2.4rem; font-weight:700;
  color:#fff; line-height:1;
}
.stat__num small{ font-size:1.4rem; color:var(--c-accent-2) }
.stat__lbl{
  font-size:.8rem; color:#9bb1c9;
  letter-spacing:.05em; margin-top:8px;
}

.hero__scroll{
  position:absolute; bottom:32px; left:50%;
  transform:translateX(-50%);
  z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-size:.72rem; letter-spacing:.2em; text-transform:uppercase;
  color:#9bb1c9;
}
.hero__scroll::after{
  content:""; width:1px; height:40px;
  background:linear-gradient(transparent, var(--c-accent-2));
  animation:scrollHint 2s ease-in-out infinite;
}
@keyframes scrollHint{
  0%,100%{ transform:scaleY(0); transform-origin:top }
  50%{ transform:scaleY(1); transform-origin:top }
  51%{ transform-origin:bottom }
}

/* ---------- Sobre ---------- */
.about__visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  aspect-ratio:4/5;
  box-shadow:var(--shadow-lg);
}
.about__visual::after{
  content:""; position:absolute; inset:0;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><defs><pattern id='b' width='20' height='20' patternUnits='userSpaceOnUse'><path d='M0 10 H20 M10 0 V20' stroke='white' stroke-opacity='0.07' stroke-width='1'/></pattern></defs><rect width='200' height='200' fill='url(%23b)'/></svg>");
}
.about__visual-card{
  position:absolute; bottom:24px; left:24px; right:24px;
  background:#fff; padding:20px 24px;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  display:flex; gap:16px; align-items:center;
  z-index:2;
}
.about__visual-card svg{ width:32px; height:32px; color:var(--c-accent); flex-shrink:0 }
.about__visual-card strong{ color:var(--c-primary); display:block; font-family:var(--font-display) }
.about__visual-card span{ font-size:.85rem; color:var(--c-text-2) }

/* ---------- Cards de serviço ---------- */
.service-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .3s ease;
  position:relative;
  overflow:hidden;
}
.service-card::before{
  content:""; position:absolute; left:0; top:0;
  width:100%; height:3px;
  background:linear-gradient(90deg, var(--c-accent), var(--c-accent-2));
  transform:scaleX(0); transform-origin:left;
  transition:transform .35s ease;
}
.service-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.service-card:hover::before{ transform:scaleX(1) }
.service-card__icon{
  width:54px; height:54px;
  border-radius:12px;
  background:linear-gradient(135deg, rgba(45,125,210,.12), rgba(79,182,229,.08));
  display:grid; place-items:center;
  color:var(--c-accent);
  margin-bottom:24px;
}
.service-card__icon svg{ width:26px; height:26px }
.service-card h3{ margin-bottom:12px; color:var(--c-primary) }
.service-card p{ font-size:.95rem; margin-bottom:16px }
.service-card a{
  color:var(--c-accent); font-weight:600; font-size:.9rem;
  display:inline-flex; align-items:center; gap:6px;
}
.service-card a:hover{ gap:10px }

/* ---------- Processo (steps) ---------- */
.process__list{
  display:grid; gap:0;
  position:relative;
}
@media(min-width:760px){
  .process__list{ grid-template-columns:repeat(4,1fr) }
}
.process__item{
  position:relative;
  padding:32px 24px;
  border-left:1px solid var(--c-border);
}
@media(min-width:760px){
  .process__item{ border-left:none; border-top:1px solid var(--c-border); padding:32px 24px 0 }
}
.process__num{
  font-family:var(--font-display);
  font-size:.9rem; font-weight:600;
  color:var(--c-accent);
  letter-spacing:.1em;
}
.process__item h3{ margin-top:8px; color:var(--c-primary) }

/* ---------- Stats grandes ---------- */
.stats-band{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:48px;
  padding:64px 0;
  text-align:center;
}
@media(max-width:680px){ .stats-band{ grid-template-columns:repeat(2,1fr); gap:32px } }
.stats-band__num{
  font-family:var(--font-display);
  font-size:clamp(2.4rem, 4vw, 3.5rem);
  font-weight:700; color:var(--c-accent-2); line-height:1;
}
.stats-band__lbl{ color:#cdd9e8; font-size:.9rem; margin-top:12px; letter-spacing:.05em }

/* ---------- CTA ---------- */
.cta-band{
  background:
    radial-gradient(800px 400px at 20% 50%, rgba(45,125,210,.3), transparent 60%),
    linear-gradient(135deg, var(--c-primary) 0%, #051628 100%);
  color:#fff;
  padding:80px 0;
  text-align:center;
  border-radius:var(--radius-lg);
  margin:0 var(--gutter);
  position:relative; overflow:hidden;
}
.cta-band h2{ color:#fff; max-width:720px; margin-inline:auto }
.cta-band p{ color:#cdd9e8; max-width:560px; margin-inline:auto 24px auto }

/* ---------- Contato ---------- */
.contact__grid{ display:grid; gap:48px }
@media(min-width:880px){ .contact__grid{ grid-template-columns:1fr 1fr } }
.contact-info{ display:flex; flex-direction:column; gap:24px; margin:32px 0 }
.contact-info__item{
  display:flex; align-items:flex-start; gap:16px;
  padding:18px 20px;
  border-radius:var(--radius);
  background:var(--c-bg-alt);
  transition:all .25s ease;
}
.contact-info__item:hover{ transform:translateX(4px); box-shadow:var(--shadow-sm) }
.contact-info__icon{
  width:44px; height:44px;
  border-radius:10px;
  background:#fff;
  display:grid; place-items:center;
  color:var(--c-accent);
  flex-shrink:0;
  box-shadow:var(--shadow-sm);
}
.contact-info__icon svg{ width:22px; height:22px }
.contact-info strong{ display:block; color:var(--c-primary); font-family:var(--font-display); margin-bottom:2px }
.contact-info span{ color:var(--c-text-2); font-size:.95rem }

.form{
  background:#fff;
  padding:36px;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  border:1px solid var(--c-border);
}
.form__row{ display:grid; gap:18px; margin-bottom:18px }
@media(min-width:600px){ .form__row--2{ grid-template-columns:1fr 1fr } }
.form label{
  display:block; font-size:.78rem; font-weight:600;
  color:var(--c-primary); letter-spacing:.05em;
  text-transform:uppercase; margin-bottom:6px;
}
.form input, .form textarea, .form select{
  width:100%; padding:14px 16px;
  background:var(--c-bg-alt);
  border:1px solid transparent;
  border-radius:10px;
  font:inherit; color:var(--c-text);
  transition:all .2s ease;
}
.form input:focus, .form textarea:focus, .form select:focus{
  outline:none; border-color:var(--c-accent);
  background:#fff; box-shadow:0 0 0 3px rgba(45,125,210,.12);
}
.form textarea{ resize:vertical; min-height:140px }

/* ---------- WhatsApp Floating ---------- */
.whatsapp-fab{
  position:fixed; bottom:24px; right:24px; z-index:90;
  width:60px; height:60px;
  background:#25D366; color:#fff;
  border-radius:50%;
  display:grid; place-items:center;
  box-shadow:0 12px 30px rgba(37,211,102,.4);
  transition:all .3s ease;
}
.whatsapp-fab:hover{ transform:scale(1.08) }
.whatsapp-fab::before{
  content:""; position:absolute; inset:0;
  border-radius:50%;
  background:#25D366;
  animation:pulse 2s ease-out infinite;
  z-index:-1; opacity:.4;
}
@keyframes pulse{
  0%{ transform:scale(1); opacity:.4 }
  100%{ transform:scale(1.6); opacity:0 }
}

/* ---------- Footer ---------- */
.footer{
  background:#051628; color:#9bb1c9;
  padding:64px 0 24px;
  font-size:.92rem;
}
.footer__grid{
  display:grid; gap:40px;
  margin-bottom:48px;
}
@media(min-width:760px){
  .footer__grid{ grid-template-columns:2fr 1fr 1fr 1fr }
}
.footer h4{
  color:#fff; font-size:.85rem;
  letter-spacing:.15em; text-transform:uppercase;
  margin-bottom:18px;
}
.footer ul{ list-style:none; padding:0; margin:0 }
.footer ul li{ margin-bottom:10px }
.footer ul a:hover{ color:var(--c-accent-2) }
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:24px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px;
  font-size:.82rem;
}

/* ---------- Reveal on scroll ---------- */
.reveal{
  opacity:0; transform:translateY(30px);
  transition:opacity .8s ease, transform .8s ease;
}
.reveal.is-visible{ opacity:1; transform:none }
.reveal-delay-1{ transition-delay:.1s }
.reveal-delay-2{ transition-delay:.2s }
.reveal-delay-3{ transition-delay:.3s }

/* ---------- Mockup variants banner ---------- */
.variants-banner{
  position:fixed; left:50%; bottom:24px;
  transform:translateX(-50%);
  z-index:80;
  background:rgba(10,37,64,.92);
  backdrop-filter:blur(10px);
  color:#fff;
  padding:10px 16px;
  border-radius:999px;
  display:flex; gap:6px; align-items:center;
  box-shadow:var(--shadow-lg);
  font-family:var(--font-display);
  font-size:.82rem;
  border:1px solid rgba(255,255,255,.1);
}
.variants-banner small{
  padding:0 12px 0 6px; opacity:.7; letter-spacing:.05em;
}
.variants-banner a{
  padding:6px 14px; border-radius:999px;
  transition:all .2s ease;
}
.variants-banner a:hover{ background:var(--c-accent); color:#fff }
.variants-banner a.active{ background:#fff; color:var(--c-primary) }
@media(max-width:640px){
  .variants-banner small{ display:none }
  .variants-banner{ font-size:.72rem; padding:8px 6px }
}