/* Paleta: tons de cinza, branco e preto */
:root{
  --bg:#0f1113;
  --bg-2:#111316;
  --card:#1c1f23;
  --muted:#9aa0a6;
  --accent:#e6e6e6;
  --glass: rgba(255,255,255,0.03);
  --max-width:1200px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: var(--bg);
  color:var(--accent);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
.container{max-width:var(--max-width);margin:0 auto;padding:2rem}

#particles-js{position:fixed;inset:0;z-index:0;pointer-events:none}

.site-header{position:sticky;top:0;z-index:10;background: rgba(15,17,19,0.95);}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0.75rem 0}
.logo{font-weight:700;font-size:1.25rem}
.main-nav ul{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.main-nav a{color:var(--muted);text-decoration:none}
.main-nav a:hover{color:var(--accent)}
.nav-toggle{display:none;background:transparent;border:0;color:var(--accent)}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--accent);margin:4px 0;transition:background .18s ease, transform .18s cubic-bezier(.2,.9,.3,1), opacity .12s ease;border-radius:2px;transform-origin:center}

/* Hamburger button (mobile) - estilo tradicional (três barras) */
.nav-toggle{width:44px;height:40px;align-items:center;justify-content:center;padding:6px;border-radius:8px}
.nav-toggle{display:none}
/* quando aberto, apenas escurece levemente as barras para indicar ativo */
.nav-toggle[aria-expanded="true"] span{background:rgba(230,230,230,0.95);}
/* transformar as barras em X quando aberto */
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform: translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;transform:translateX(-8px)}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform: translateY(-6px) rotate(-45deg)}

/* Larger responsive form */
.contact form{max-width:640px;width:100%;padding:1.25rem;background:rgba(255,255,255,0.02);border-radius:12px}
.contact input, .contact textarea{font-size:1rem}
.contact .btn{padding:0.9rem 1.25rem}

.hero{min-height:70vh;display:flex;align-items:center;position:relative;z-index:1}
.hero-inner{max-width:720px}
.site-title{font-size:3rem;margin:0 0 .5rem}
.tagline{color:var(--muted);margin-bottom:1.25rem}
.btn{display:inline-block;padding:.75rem 1.25rem;border-radius:8px;background:transparent;border:1px solid rgba(255,255,255,0.08);color:var(--accent);text-decoration:none}
.btn-primary{background:var(--accent);color:#0b0b0b;border:0;box-shadow:0 6px 18px rgba(0,0,0,0.4);}

.about, .projects, .testimonials, .services, .contact{padding:4rem 0}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.project-card{background:var(--card);padding:1rem;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,0.4);transition:transform .28s cubic-bezier(.2,.9,.3,1), box-shadow .28s}
.project-card:focus, .project-card:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(0,0,0,0.6)}
.project-thumb{height:140px;background:linear-gradient(90deg,rgba(255,255,255,0.03),rgba(255,255,255,0.01));border-radius:8px;margin-bottom:0.75rem}

.project-link{color:var(--accent);text-decoration:none}
.project-thumb img{width:100%;height:140px;object-fit:cover;border-radius:8px;display:block}

.testimonials .carousel{position:relative;overflow:hidden}
.carousel-track{display:flex;transition:transform .5s cubic-bezier(.2,.9,.3,1)}
.testimonial{min-width:100%;padding:2rem;background:var(--glass);border-radius:10px;margin:0}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,0.4);border:0;color:var(--accent);padding:.5rem 0.75rem;border-radius:6px}
.carousel-btn.prev{left:12px}
.carousel-btn.next{right:12px}

/* Depoimentos */
.testimonials-note{color:var(--muted);margin-bottom:1rem;font-style:italic}
.rating{display:flex;gap:.25rem;margin-bottom:.5rem}
.star{width:18px;height:18px;fill:#f5c547;flex:0 0 18px}
.testimonial p{margin:0;color:var(--accent)}

.services-list{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}
.contact form{max-width:480px;margin-bottom:1.5rem}
.form-row{margin-bottom:1rem}
label{display:block;color:var(--muted);font-size:.9rem;margin-bottom:.35rem}
input,textarea{width:100%;padding:.6rem;border-radius:8px;border:1px solid rgba(255,255,255,0.06);background:transparent;color:var(--accent)}

.site-footer{padding:2rem 0;color:var(--muted);border-top:1px solid rgba(255,255,255,0.03)}
.footer-nav a{color:var(--muted);margin-left:1rem}

/* Ícones de contato */
.contact-details{display:flex;flex-direction:column;gap:.5rem;color:var(--muted)}
.contact-details .icon{width:20px;height:20px;vertical-align:middle;margin-right:.5rem}
.contact-details a{color:var(--accent);text-decoration:none}
.contact-details .social{display:flex;gap:.5rem;align-items:center}
.contact-details .icon-social{width:28px;height:28px;filter:grayscale(100%) opacity(.9);transition:filter .15s ease, transform .15s ease}
.contact-details a:hover .icon-social{filter:none;transform:translateY(-3px)}

/* Quando houver apenas ícones sociais */
.social-only{display:flex;gap:1rem;align-items:center;flex-direction:row}
.social-only a{display:inline-flex;align-items:center;justify-content:center;padding:.25rem;border-radius:8px;background:transparent}
.social-only a:focus, .social-only a:hover{background:rgba(255,255,255,0.03)}

/* Hide carousel buttons when using autoplay */
.carousel-btn{display:none}

/* Centralizar contato */
.contact .container{display:flex;flex-direction:column;align-items:center;gap:1rem}
.contact form{margin:0 auto}
.social-only{justify-content:center}
.contact-details a{display:inline-flex;align-items:center;justify-content:center}
.contact-details .icon-social{width:36px;height:36px}

/* Scroll reveal */
[data-reveal]{transform:translateY(12px);opacity:0;transition:transform .6s cubic-bezier(.2,.9,.3,1),opacity .6s ease}
[data-reveal].revealed{transform:none;opacity:1}

.form-msg{color:var(--accent);margin-top:.75rem}

@media (prefers-reduced-motion: reduce){
  [data-reveal]{transition:none;transform:none;opacity:1}
  .project-card, .icon-social{transition:none}
}

/* Responsividade */
@media (max-width:900px){
  .projects-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:700px){
  .header-inner{gap:.5rem}
  .main-nav{display:none}
  .main-nav.open{display:block;position:absolute;top:64px;left:0;right:0;background:rgba(15,17,19,0.98);padding:1rem}
  .main-nav.open ul{display:flex;flex-direction:column;gap:0.5rem}
  /* mobile: colocar o botão hamburger à esquerda e logo à direita */
  .nav-toggle{order:1}
  .logo{order:2;margin-left:auto;margin-right:.5rem}
  .nav-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center}

  /* Desabilitar animação para usuários que preferem menos movimento */
  @media (prefers-reduced-motion: reduce){
    .nav-toggle span{transition:none}
    .nav-toggle[aria-expanded="true"] span{transform:none;opacity:1}
  }
  .projects-grid{grid-template-columns:1fr}
  .site-title{font-size:2.25rem}
  .services-list{grid-template-columns:1fr}
}

/* Small utilities */
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Cursor customizado: ponto e anel */
@media (pointer: fine) and (prefers-reduced-motion: no-preference){
  .custom-cursor-dot, .custom-cursor-ring{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;transform:translate3d(-50%,-50%,0)}
  .custom-cursor-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 2px 8px rgba(0,0,0,0.4)}
  .custom-cursor-ring{width:36px;height:36px;border-radius:50%;border:2px solid rgba(230,230,230,0.12);transition:transform .12s ease,opacity .18s ease}
  a:hover ~ .custom-cursor-ring, button:hover ~ .custom-cursor-ring, .project-link:hover ~ .custom-cursor-ring{transform:scale(1.4);opacity:0.95}
}