/* Veltero — veltero.com.br · direção em DESIGN.md */
:root{
  --bg:#0b1210; --bg-raised:#101a16; --line:#1f2e28;
  --ink:#eef4f1; --muted:#94a8a0;
  --brand:#2fbf8f; --brand-strong:#25a379; --brand-ink:#06130e;
  --radius:14px;
  --font-display:"Sora",system-ui,sans-serif;
  --font-text:"Inter",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  font-family:var(--font-text);background:var(--bg);color:var(--ink);
  line-height:1.7;font-size:1.02rem;-webkit-font-smoothing:antialiased;
}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
@media(max-width:480px){.container{padding:0 16px}}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-strong)}
::selection{background:var(--brand);color:var(--brand-ink)}

h1,h2,h3{font-family:var(--font-display);letter-spacing:-.02em;line-height:1.15}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:600;margin-bottom:16px}
h3{font-size:1.15rem;font-weight:600}
.kicker{
  font-family:var(--font-display);font-size:.8rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.14em;color:var(--brand);margin-bottom:14px;
}
.lead{color:var(--muted);font-size:1.1rem;max-width:640px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,18,16,.82);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.site-header .container{display:flex;align-items:center;gap:28px;height:68px}
.logo{
  font-family:var(--font-display);font-weight:700;font-size:1.95rem;
  color:var(--ink);letter-spacing:-.02em;white-space:nowrap;line-height:1;
}
.site-footer .logo{font-size:1.35rem;display:inline-block;margin-bottom:6px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo .dot{color:var(--brand)}
.site-nav{display:flex;gap:20px;margin-left:auto}
.site-nav a{color:var(--muted);font-size:.92rem;font-weight:500;white-space:nowrap}
.site-nav a:hover{color:var(--ink)}
@media(max-width:1080px){.site-nav{display:none}}
.header-cta{margin-left:auto;flex-shrink:0}
.site-nav+.header-cta{margin-left:0}
@media(max-width:1080px){.site-nav+.header-cta{margin-left:auto}}

/* Botões */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:10px;font-weight:600;font-size:.98rem;
  white-space:nowrap;
  transition:background .2s,border-color .2s,transform .2s;
}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{background:var(--brand-strong);color:var(--brand-ink);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--ink)}
.btn-sm{padding:9px 18px;font-size:.9rem}

/* Hero */
.hero{padding:96px 0 80px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:auto -20% -60% -20%;height:120%;
  background:radial-gradient(ellipse at 30% 100%,rgba(47,191,143,.10),transparent 60%);
  pointer-events:none;
}
/* Textura do lado direito: malha de pontos + glow do acento */
.hero::after{
  content:"";position:absolute;top:0;right:0;width:58%;height:100%;
  background-image:
    radial-gradient(ellipse at 72% 38%,rgba(47,191,143,.16),transparent 55%),
    radial-gradient(rgba(47,191,143,.22) 1px,transparent 1.6px);
  background-size:100% 100%,26px 26px;
  -webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000 25%,transparent 72%);
  mask-image:radial-gradient(ellipse at 70% 40%,#000 25%,transparent 72%);
  pointer-events:none;
}
@media(max-width:899px){.hero::after{width:100%;opacity:.5}}
.hero .container>div:first-child{position:relative;z-index:1}
.chat-mock{position:relative;z-index:1}
.hero .container{display:grid;gap:56px;align-items:center;position:relative}
@media(min-width:900px){.hero .container{grid-template-columns:1.15fr .85fr}}
.hero h1{max-width:600px}
.hero .lead{margin:22px 0 34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:.86rem;color:var(--muted)}

/* Mockup de conversa (CSS puro, original) */
.chat-mock{
  background:var(--bg-raised);border:1px solid var(--line);border-radius:20px;
  padding:20px;max-width:400px;margin:0 auto;width:100%;
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.chat-mock-header{
  display:flex;align-items:center;gap:12px;padding-bottom:14px;
  border-bottom:1px solid var(--line);margin-bottom:16px;
}
.chat-avatar{
  width:38px;height:38px;border-radius:50%;background:var(--brand);
  color:var(--brand-ink);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-weight:700;
}
.chat-title{font-weight:600;font-size:.95rem}
.chat-sub{font-size:.78rem;color:var(--brand)}
.chat-msgs{display:flex;flex-direction:column;gap:10px}
.msg{
  max-width:85%;padding:10px 14px;border-radius:14px;font-size:.9rem;line-height:1.5;
}
.msg-in{background:#16241e;border-bottom-left-radius:4px;align-self:flex-start}
.msg-out{background:#1d3a2f;border-bottom-right-radius:4px;align-self:flex-end}
.msg time{display:block;font-size:.68rem;color:var(--muted);margin-top:4px;text-align:right}

/* Seções */
section{padding:96px 0}
@media(max-width:720px){section{padding:64px 0}}
.section-head{max-width:680px;margin-bottom:48px}
.alt{background:var(--bg-raised);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* Separador sutil: faixa de malha de pontos no topo das seções alternadas */
section.alt{position:relative}
section.alt:not(.contato)::before{
  content:"";position:absolute;top:0;left:0;right:0;height:130px;
  background-image:radial-gradient(rgba(47,191,143,.13) 1px,transparent 1.6px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 100%);
  pointer-events:none;
}
section.alt>.container{position:relative}

/* Glow lateral leve na seção de IA aplicada */
#ia-aplicada{position:relative;overflow:hidden}
#ia-aplicada::before{
  content:"";position:absolute;top:0;right:-12%;width:48%;height:100%;
  background:radial-gradient(ellipse at 80% 45%,rgba(47,191,143,.09),transparent 62%);
  pointer-events:none;
}
#ia-aplicada .container{position:relative}

/* Cards de serviço */
.cards{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{
  background:var(--bg-raised);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;gap:12px;
  transition:border-color .2s,transform .2s;
}
.alt .card{background:var(--bg)}
.card:hover{border-color:var(--brand);transform:translateY(-3px)}
.card .tag{
  font-family:var(--font-display);font-size:.76rem;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;color:var(--brand);
}
.card p{color:var(--muted);font-size:.96rem}
.card .card-link{margin-top:auto;font-weight:600;font-size:.92rem}

/* Detalhe de serviço */
.service{display:grid;gap:40px;align-items:start}
@media(min-width:860px){.service{grid-template-columns:1fr 1fr;gap:64px}}
.service ul{list-style:none;display:grid;gap:12px;margin-top:20px}
.service li{padding-left:30px;position:relative;color:var(--muted)}
.service li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;
  border-radius:50%;background:rgba(47,191,143,.15);
  box-shadow:inset 0 0 0 1.5px var(--brand);
}
.service li strong{color:var(--ink)}
.service .aside{
  background:var(--bg-raised);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;
}
.alt .service .aside{background:var(--bg)}
.service .aside h3{margin-bottom:10px}
.service .aside p{color:var(--muted);font-size:.95rem}
.service .aside p+p{margin-top:12px}

/* Passos */
.passos{list-style:none;counter-reset:p;display:grid;gap:22px;max-width:760px}
.passos li{counter-increment:p;display:flex;gap:20px;align-items:flex-start}
.passos li::before{
  content:counter(p,decimal-leading-zero);
  font-family:var(--font-display);font-weight:700;font-size:.9rem;
  flex:0 0 44px;height:44px;border-radius:50%;
  background:rgba(47,191,143,.12);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 1px rgba(47,191,143,.4);
}
.passos strong{display:block;font-family:var(--font-display);font-weight:600}
.passos span{color:var(--muted);font-size:.96rem}

/* Ícones (chips no estilo dos números dos passos) */
.icon-chip{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  background:rgba(47,191,143,.12);box-shadow:inset 0 0 0 1px rgba(47,191,143,.4);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.icon-chip svg{width:22px;height:22px}
.card .icon-chip{margin-bottom:4px}
.btn svg{width:18px;height:18px;flex-shrink:0}

/* Diferenciais */
.checks{list-style:none;display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.checks li{display:flex;gap:16px;align-items:flex-start;color:var(--muted);font-size:.97rem}
.checks li strong{color:var(--ink);display:block;margin-bottom:2px}

/* Projetos */
.proj{border-left:2px solid var(--line);padding:4px 0 4px 24px;transition:border-color .2s}
.proj:hover{border-color:var(--brand)}
.proj h3{margin-bottom:6px}
.proj p{color:var(--muted);font-size:.95rem}
.proj .tag{font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);font-weight:600}
.projs{display:grid;gap:32px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}

/* FAQ */
.faq{max-width:760px}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{
  cursor:pointer;font-family:var(--font-display);font-weight:600;
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq .q{display:flex;gap:14px;align-items:center}
.faq .q svg{width:20px;height:20px;color:var(--brand);flex-shrink:0}
.faq details p{padding-left:34px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:1.3rem;flex-shrink:0;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);margin-top:12px;font-size:.97rem}

/* Contato */
.contato{text-align:center;position:relative;overflow:hidden}
.contato::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 50% 120%,rgba(47,191,143,.10),transparent 60%),
    radial-gradient(rgba(47,191,143,.14) 1px,transparent 1.6px);
  background-size:100% 100%,26px 26px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 100%,#000 20%,transparent 70%);
  mask-image:radial-gradient(ellipse at 50% 100%,#000 20%,transparent 70%);
  pointer-events:none;
}
.contato .container{position:relative}
.contato .section-head{margin:0 auto 36px}
.contato-links{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.contato .email{display:block;margin-top:26px;font-size:1.05rem}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:48px 0;font-size:.9rem;color:var(--muted)}
.site-footer .container{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--ink)}

/* Página de texto (privacidade) */
.page{padding:72px 0;max-width:760px;margin:0 auto}
.page h1{font-size:clamp(1.9rem,4vw,2.6rem);margin-bottom:8px}
.page .atualizacao{color:var(--muted);font-size:.92rem;margin-bottom:36px}
.page h2{font-size:1.3rem;margin:40px 0 12px}
.page p,.page li{color:var(--muted);margin-bottom:12px}
.page li strong,.page p strong{color:var(--ink)}
.page ul{padding-left:22px}

/* Reveal on scroll (progressive enhancement) */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.on{opacity:1;transform:none}