/* =====================================================
   Grupo BrAIXn — Estilos globais
   (CSS crítico de navbar/hero vive inline no index.html)
   ===================================================== */

/* ---------- Layout base ---------- */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 clamp(1rem,5vw,2rem);
  width:100%;
}
.section{padding:clamp(4rem,9vw,7rem) 0;position:relative}
.section-dark{background:var(--color-surface);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}
.section-head{max-width:760px;margin:0 auto 3.5rem;text-align:center}
.section-head .badge{margin-bottom:1.25rem}
.section h2{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.05;letter-spacing:-.02em;
  margin-bottom:1rem;
}
.section-sub{color:var(--color-muted);font-weight:300;font-size:clamp(1rem,1.6vw,1.15rem);max-width:640px;margin:0 auto}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal:nth-child(2){transition-delay:.08s}
.reveal:nth-child(3){transition-delay:.16s}
.reveal:nth-child(4){transition-delay:.24s}

/* ---------- Hero particles ---------- */
.particle{
  position:absolute;width:3px;height:3px;border-radius:50%;
  background:var(--color-accent);opacity:.45;
  box-shadow:0 0 8px var(--color-accent);
  animation:particle-float linear infinite;
  will-change:transform,opacity;
}
@keyframes particle-float{
  0%{transform:translateY(0) translateX(0);opacity:0}
  10%{opacity:.6}
  90%{opacity:.4}
  100%{transform:translateY(-120vh) translateX(40px);opacity:0}
}

/* ===================== PILARES ===================== */
.pilares-grid{
  display:grid;gap:1.5rem;
  grid-template-columns:1fr;
}
.pilar-card{
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:12px;
  padding:clamp(1.75rem,3vw,2.5rem);
  display:flex;flex-direction:column;gap:1.25rem;
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.pilar-card:hover{transform:translateY(-4px);border-color:rgba(212,255,0,.3)}
.pilar-highlight{
  box-shadow:0 0 0 1px rgba(212,255,0,.25),0 0 48px rgba(212,255,0,.08);
  border-color:rgba(212,255,0,.25);
}
.pilar-highlight:hover{box-shadow:0 0 0 1px rgba(212,255,0,.4),0 0 64px rgba(212,255,0,.18)}
.pilar-icon{
  width:56px;height:56px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(212,255,0,.08);color:var(--color-accent);
  border:1px solid rgba(212,255,0,.2);
}
.pilar-tag{
  display:inline-block;font-size:.75rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--color-muted);
}
.pilar-tag-accent{color:var(--color-accent)}
.pilar-card h3{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.1;letter-spacing:-.02em;
}
.pilar-card p{color:var(--color-muted);font-weight:300}
.pilar-list{list-style:none;display:flex;flex-direction:column;gap:.6rem}
.pilar-list li{position:relative;padding-left:1.75rem;font-size:.95rem}
.pilar-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  color:var(--color-accent);font-weight:700;
}
.pilar-card .btn{align-self:flex-start;margin-top:auto}

/* ===================== TIMELINE ===================== */
.timeline{
  list-style:none;display:grid;gap:1.25rem;
  grid-template-columns:1fr;position:relative;
}
.step{
  background:var(--color-bg);
  border:1px solid var(--color-border);
  border-radius:12px;
  padding:1.75rem;
  display:flex;flex-direction:column;gap:.6rem;
  transition:border-color .3s ease,transform .3s ease;
}
.step:hover{border-color:rgba(212,255,0,.3);transform:translateY(-3px)}
.step-num{
  font-family:var(--font-display);font-weight:800;
  font-size:2.25rem;color:var(--color-accent);line-height:1;letter-spacing:-.02em;
  text-shadow:0 0 24px rgba(212,255,0,.25);
}
.step h4{
  font-family:var(--font-display);font-weight:700;
  font-size:1.15rem;letter-spacing:-.01em;
}
.step p{color:var(--color-muted);font-size:.95rem;font-weight:300}

/* ===================== DIFERENCIAIS ===================== */
.dif-grid{
  display:grid;gap:1.25rem;
  grid-template-columns:1fr;
}
.dif-card{
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:12px;
  padding:1.75rem;
  display:flex;flex-direction:column;gap:.75rem;
  transition:all .3s ease;
}
.dif-card:hover{border-color:rgba(212,255,0,.3);transform:translateY(-3px);box-shadow:0 0 24px rgba(212,255,0,.08)}
.dif-icon{
  width:44px;height:44px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(212,255,0,.08);color:var(--color-accent);
  border:1px solid rgba(212,255,0,.2);
}
.dif-card h4{font-family:var(--font-display);font-weight:700;font-size:1.1rem}
.dif-card p{color:var(--color-muted);font-weight:300;font-size:.95rem}

/* ===================== CTA BANNER ===================== */
.cta-banner{
  background:var(--color-accent);color:#000;
  padding:clamp(3.5rem,8vw,6rem) 0;
  position:relative;overflow:hidden;
}
.cta-banner::before,.cta-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(0,0,0,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(0,0,0,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1.25rem}
.cta-inner h2{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2rem,5vw,3.2rem);line-height:1.05;letter-spacing:-.025em;
  color:#000;
}
.cta-inner p{color:rgba(0,0,0,.7);font-size:clamp(1rem,1.6vw,1.15rem);max-width:560px}
.btn-cta-dark{
  background:#000;color:var(--color-accent);border:2px solid #000;
  padding:1.1rem 2rem;font-size:1.05rem;font-weight:500;
}
.btn-cta-dark:hover{background:#111;transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.25)}

/* ===================== SOBRE ===================== */
.sobre-grid{display:grid;gap:2.5rem;grid-template-columns:1fr}
.sobre-grid h2{font-size:clamp(1.9rem,3.8vw,2.75rem);line-height:1.1}
.sobre-text{color:var(--color-muted);font-weight:300;margin-bottom:1.25rem;font-size:1.05rem}
.sobre-stats{display:flex;flex-wrap:wrap;gap:2.5rem;margin-top:2rem;padding-top:2rem;border-top:1px solid var(--color-border)}
.sobre-stat{display:flex;flex-direction:column;gap:.25rem}
.sobre-stat b{
  font-family:var(--font-display);font-weight:800;font-size:2.75rem;
  color:var(--color-accent);letter-spacing:-.03em;line-height:1;
  text-shadow:0 0 24px rgba(212,255,0,.2);
}
.sobre-stat span{color:var(--color-muted);font-size:.9rem}

/* ===================== CONTATO ===================== */
.contato-grid{display:grid;gap:3rem;grid-template-columns:1fr}
.contato-grid h2{font-size:clamp(1.9rem,3.8vw,2.75rem)}
.contato-list{list-style:none;display:flex;flex-direction:column;gap:1.25rem;margin-top:2rem}
.contato-list li{display:flex;flex-direction:column;gap:.2rem}
.contato-label{font-size:.75rem;letter-spacing:.15em;text-transform:uppercase;color:var(--color-muted)}
.contato-list a,.contato-list span:not(.contato-label){color:var(--color-text);font-size:1.05rem;font-weight:500;transition:color .2s ease}
.contato-list a:hover{color:var(--color-accent)}

.contato-form{
  background:var(--color-bg);
  border:1px solid var(--color-border);
  border-radius:14px;
  padding:clamp(1.5rem,3vw,2.25rem);
  display:grid;gap:1rem;grid-template-columns:1fr;
}
.contato-form label{display:flex;flex-direction:column;gap:.4rem}
.contato-form label.full{grid-column:1/-1}
.contato-form span{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--color-muted)}
.contato-form input,.contato-form select,.contato-form textarea{
  width:100%;background:var(--color-surface);
  border:1px solid var(--color-border);border-radius:8px;
  padding:.85rem 1rem;color:var(--color-text);font-family:inherit;font-size:.95rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.contato-form input:focus,.contato-form select:focus,.contato-form textarea:focus{
  outline:none;border-color:var(--color-accent);
  box-shadow:0 0 0 3px rgba(212,255,0,.15);
}
.contato-form textarea{resize:vertical;min-height:110px;font-family:inherit}
.contato-form select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--color-accent) 50%),linear-gradient(135deg,var(--color-accent) 50%,transparent 50%);background-position:calc(100% - 18px) 18px,calc(100% - 13px) 18px;background-size:5px 5px;background-repeat:no-repeat;padding-right:2.5rem}
.btn-full{width:100%;padding:1.05rem;font-size:1rem}
.form-note{grid-column:1/-1;text-align:center;font-size:.8rem;color:var(--color-muted)}

/* ===================== FOOTER ===================== */
.footer{
  background:var(--color-surface);
  border-top:1px solid var(--color-border);
  padding:4rem 0 2rem;
}
.footer-grid{display:grid;gap:2.5rem;grid-template-columns:1fr;margin-bottom:2.5rem}
.footer .logo{display:inline-block;margin-bottom:1rem}
.footer-tag{color:var(--color-muted);font-size:.9rem;font-weight:300;line-height:1.7}
.footer h5{font-family:var(--font-display);font-weight:700;font-size:.95rem;margin-bottom:1rem;letter-spacing:.02em}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.footer ul a{color:var(--color-muted);font-size:.92rem;transition:color .2s ease}
.footer ul a:hover{color:var(--color-accent)}
.footer-bottom{
  display:flex;flex-direction:column;gap:.5rem;
  padding-top:2rem;border-top:1px solid var(--color-border);
  font-size:.82rem;color:var(--color-muted);
}

/* ===================== WHATSAPP FLOAT ===================== */
.whatsapp-float{
  position:fixed;bottom:20px;right:16px;
  width:56px;height:56px;background:#25D366;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 20px rgba(37,211,102,.4);
  z-index:9999;
  transition:transform .2s ease,box-shadow .2s ease;
  animation:pulse-whatsapp 2.5s infinite;
}
.whatsapp-float:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(37,211,102,.6)}
@keyframes pulse-whatsapp{
  0%,100%{box-shadow:0 4px 20px rgba(37,211,102,.4)}
  50%{box-shadow:0 4px 32px rgba(37,211,102,.7)}
}

/* ===================== BREAKPOINTS ===================== */
@media(min-width:768px){
  .whatsapp-float{bottom:28px;right:28px}
  .pilares-grid{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .dif-grid{grid-template-columns:1fr 1fr}
  .sobre-grid{grid-template-columns:1fr 1.2fr;align-items:start;gap:4rem}
  .contato-grid{grid-template-columns:1fr 1.1fr;gap:4rem;align-items:start}
  .contato-form{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
  .footer-bottom{flex-direction:row;justify-content:space-between}
}
@media(min-width:1024px){
  .timeline{grid-template-columns:repeat(4,1fr);gap:1.5rem;position:relative}
  .timeline::before{
    content:"";position:absolute;left:0;right:0;top:42px;height:1px;
    background:linear-gradient(to right,transparent,var(--color-border) 10%,var(--color-border) 90%,transparent);
    z-index:0;
  }
  .step{position:relative;z-index:1}
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}