/* KoraxIA — estilos compartilhados (ver brand-spec.md) */
:root{
  --bg:      oklch(1 0 0);
  --surface: oklch(0.96 0.004 80);
  --fg:      oklch(0.17 0.01 270);
  --muted:   oklch(0.45 0.01 270);
  --border:  oklch(0.87 0.006 80);
  --accent:  oklch(0.72 0.13 70);
  --accent-hover: oklch(0.64 0.13 70);
  --accent-text:  oklch(0.5 0.12 70);
  --ink:     oklch(0.17 0.01 270);
  --ink-fg:  oklch(0.96 0.004 80);
  --display: "Petrona", "Iowan Old Style", Charter, Georgia, serif;
  --body: system-ui, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
*{ box-sizing:border-box; margin:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg); color:var(--fg);
  font-family:var(--body); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
.wrap{ max-width:1440px; margin:0 auto; padding:0 clamp(24px,5vw,88px); }

.eyebrow{
  font-family:var(--mono); font-size:13px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--accent-text);
}
.sec-num{
  font-family:var(--mono); font-size:13px; color:var(--muted);
  letter-spacing:.1em;
}
h1,h2,h3{
  font-family:var(--display); font-weight:500; line-height:1.16;
  letter-spacing:.005em; word-spacing:.06em;
}
h1{ font-size:clamp(40px,5.2vw,68px); }
h2{ font-size:clamp(29px,3.5vw,42px); }
h3{ font-size:22px; font-weight:550; }
::selection{ background:var(--accent); color:var(--fg); }
.lead{ font-size:19px; color:var(--muted); max-width:56ch; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  min-height:48px; padding:0 28px; border-radius:6px;
  font-family:var(--body); font-size:16px; font-weight:600;
  text-decoration:none; cursor:pointer; border:1.5px solid transparent;
  transition:background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.btn-primary{ background:var(--accent); color:var(--fg); }
.btn-primary:hover{
  background:var(--accent-hover); color:var(--fg);
  transform:translateY(-2px); box-shadow:0 10px 24px oklch(0.64 0.13 70 / .35);
}
.btn-ghost{ border-color:var(--fg); color:var(--fg); background:transparent; }
.btn-ghost:hover{ background:var(--fg); color:var(--bg); }
a:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible, button:focus-visible{
  outline:3px solid var(--accent-text); outline-offset:3px; border-radius:4px;
}

/* ─ Topnav ─ */
header[data-od-id="topnav"]{
  border-bottom:1px solid var(--border); position:sticky; top:0;
  background:var(--bg); z-index:10;
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  min-height:68px; gap:24px; flex-wrap:wrap; padding:8px 0;
}
.nav-brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.nav-brand img{ width:42px; height:42px; object-fit:cover; }
.nav-brand strong{ font-size:19px; letter-spacing:-.01em; }
.nav-links{ display:flex; gap:28px; align-items:center; flex-wrap:wrap; }
.nav-links a{ text-decoration:none; font-size:15px; color:var(--fg); padding:10px 0; }
.nav-links a:hover{ text-decoration:underline; text-underline-offset:5px; }
.nav-links a.ativo{ font-weight:650; text-decoration:underline; text-underline-offset:6px; }

/* ─ Hero da home ─ */
section[data-od-id="hero"]{ padding:88px 0 96px; }
.hero-grid{ display:grid; grid-template-columns:1.25fr 1fr; gap:clamp(48px,7vw,120px); align-items:center; }
.hero-copy > * + *{ margin-top:22px; }
.hero-ctas{ display:flex; gap:14px; flex-wrap:wrap; margin-top:34px; }
.hero-meta{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.09em;
  color:var(--muted); margin-top:38px; padding-top:18px;
  border-top:1px solid var(--border); max-width:52ch;
}
.hero-logo{ justify-self:center; width:min(440px,100%); }
.hero-logo img{
  border:1px solid var(--border); border-radius:18px;
  padding:28px; background:#fff;
  box-shadow:0 24px 64px oklch(0.17 0.01 270 / .08);
}
.hero-logo figcaption{
  font-family:var(--mono); font-size:12px; color:var(--muted);
  text-align:center; margin-top:14px; letter-spacing:.08em;
}

/* ─ Hero das páginas internas ─ */
.page-hero{ padding:76px 0 64px; border-bottom:1px solid var(--border); }
.page-hero .crumb{
  font-family:var(--mono); font-size:13px; letter-spacing:.1em;
  color:var(--muted); display:block; margin-bottom:20px;
}
.page-hero .crumb a{ text-decoration:none; }
.page-hero .crumb a:hover{ text-decoration:underline; text-underline-offset:4px; }
.page-hero h1{ max-width:22ch; margin:14px 0 18px; }
.page-hero .hero-ctas{ margin-top:30px; }

/* ─ Manifesto (seção escura — floreio único) ─ */
section[data-od-id="manifesto"]{
  background:var(--ink); color:var(--ink-fg); padding:104px 0;
}
.mani-grid{ display:grid; grid-template-columns:auto 1fr; gap:56px; }
.mani-mark{
  font-family:var(--display);
  font-size:clamp(72px,9vw,128px); line-height:1; opacity:.35;
}
.mani-body h2{ margin-bottom:26px; }
.mani-body p{ max-width:62ch; font-size:18px; color:oklch(0.82 0.006 80); }
.mani-body p + p{ margin-top:18px; }
.mani-body strong{ color:var(--ink-fg); }

/* ─ Seções claras ─ */
.section{ padding:96px 0; }
.section + .section{ border-top:1px solid var(--border); }
.sec-head{ margin-bottom:52px; max-width:64ch; }
.sec-head h2{ margin:12px 0 14px; }
.sec-head p{ color:var(--muted); }
.sec-head .sec-num{ display:inline-flex; align-items:center; gap:14px; }
.sec-head .sec-num::after{ content:""; width:64px; height:1px; background:var(--fg); opacity:.35; }

/* Texto corrido */
.prose{ max-width:68ch; }
.prose p + p{ margin-top:16px; }
.prose strong{ font-weight:650; }

/* Cards de serviço */
.cards{ display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.card{
  background:var(--surface); border:1px solid var(--border);
  border-radius:10px; padding:34px 32px;
  display:block; color:inherit; text-decoration:none;
  transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.card:hover{
  border-color:var(--fg); transform:translateY(-3px);
  box-shadow:0 16px 40px oklch(0.17 0.01 270 / .07);
}
.card h3{ margin:16px 0 10px; }
.card p{ color:var(--muted); font-size:16px; }
.card-mais{
  font-family:var(--mono); font-size:13px; letter-spacing:.06em;
  display:inline-block; margin-top:18px;
}

/* Passos / método */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.steps.tres{ grid-template-columns:repeat(3,1fr); }
.step{ border-top:2px solid var(--fg); padding-top:18px; }
.step h3{ font-size:19px; margin:10px 0 8px; }
.step p{ font-size:15px; color:var(--muted); }

/* Listas editorial (aplicações / entregas) */
.uses{ display:grid; grid-template-columns:1fr 1fr; border-top:1px solid var(--border); }
.uses.uma-coluna{ grid-template-columns:1fr; max-width:860px; }
.use{
  display:grid; grid-template-columns:64px 1fr; gap:20px;
  padding:26px 8px; border-bottom:1px solid var(--border); align-items:baseline;
}
.use h3{ font-size:19px; }
.use p{ color:var(--muted); font-size:15px; margin-top:4px; }
.uses:not(.uma-coluna) .use:nth-child(odd){ padding-right:40px; }
.uses:not(.uma-coluna) .use:nth-child(even){ padding-left:40px; border-left:1px solid var(--border); }

/* Duas colunas genéricas */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(48px,7vw,120px); align-items:start; }

/* Formulário */
.form-grid{ display:grid; gap:22px; max-width:560px; }
.form-grid label{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--muted); display:block; margin-bottom:8px;
}
.form-grid input, .form-grid textarea{
  width:100%; border:1px solid var(--border); border-radius:8px;
  padding:13px 14px; font:inherit; color:var(--fg); background:#fff;
}
.form-grid textarea{ min-height:140px; resize:vertical; }
.contato-canais{ display:grid; gap:14px; }
.contato-canais a{ text-underline-offset:4px; }
.contato-canais .sec-num{ display:block; margin-bottom:2px; }

/* CTA final */
section[data-od-id="cta-final"]{
  background:var(--surface); border-top:1px solid var(--border);
  padding:104px 0; text-align:center;
}
section[data-od-id="cta-final"] h2{ max-width:22ch; margin:14px auto 18px; }
section[data-od-id="cta-final"] p{ color:var(--muted); max-width:52ch; margin:0 auto 36px; }

/* Rodapé */
footer[data-od-id="rodape"]{ border-top:1px solid var(--border); padding:44px 0; }
.foot{
  display:flex; justify-content:space-between; align-items:center;
  gap:24px; flex-wrap:wrap;
}
.foot-brand{ display:flex; align-items:center; gap:10px; }
.foot-brand img{ width:34px; height:34px; }
.foot small{ font-family:var(--mono); font-size:12px; color:var(--muted); }
.foot-links{ display:flex; gap:22px; flex-wrap:wrap; }
.foot-links a{ font-size:14px; text-decoration:none; }
.foot-links a:hover{ text-decoration:underline; text-underline-offset:5px; }

@media (max-width:920px){
  .wrap{ padding:0 20px; }
  .chat{ justify-self:center; }
  .nav{ min-height:0; padding:12px 0; }
  .nav-links{ gap:18px; }
  section[data-od-id="hero"]{ padding:56px 0 64px; }
  .hero-grid{ grid-template-columns:1fr; gap:40px; }
  .hero-logo{ width:min(260px,80%); order:-1; }
  .page-hero{ padding:52px 0 48px; }
  .mani-grid{ grid-template-columns:1fr; gap:24px; }
  .cards{ grid-template-columns:1fr; }
  .steps, .steps.tres{ grid-template-columns:1fr 1fr; }
  .uses{ grid-template-columns:1fr; }
  .uses:not(.uma-coluna) .use:nth-child(even){ padding-left:8px; border-left:none; }
  .uses:not(.uma-coluna) .use:nth-child(odd){ padding-right:8px; }
  .split{ grid-template-columns:1fr; gap:36px; }
  .section{ padding:64px 0; }
  section[data-od-id="manifesto"]{ padding:72px 0; }
}
@media (max-width:520px){
  .steps, .steps.tres{ grid-template-columns:1fr; }
  .use{ grid-template-columns:48px 1fr; }
}

/* Faixa de números reais */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:40px; }
.stat .num{ font-family:var(--display); font-size:clamp(30px,3.3vw,46px); line-height:1.05; display:block; white-space:nowrap; }
.stat{ min-width:0; }
.stat .rot{ font-family:var(--mono); font-size:12.5px; letter-spacing:.08em; color:var(--muted); display:block; margin-top:10px; max-width:26ch; }
.stats-link{ font-family:var(--mono); font-size:13px; letter-spacing:.06em; display:inline-block; margin-top:40px; }

/* Nota sob o CTA */
.cta-nota{ font-family:var(--mono); font-size:12.5px; letter-spacing:.06em; color:var(--muted); margin-top:16px; }

/* Caixa de preço */
.preco-box{ background:var(--surface); border:1px solid var(--border); border-radius:10px; padding:34px 32px; max-width:600px; }
.preco-box .num{ font-family:var(--display); font-size:clamp(28px,3.4vw,42px); display:block; }
.preco-box p{ color:var(--muted); font-size:15px; margin-top:12px; }

/* FAQ */
.faq{ max-width:760px; border-top:1px solid var(--border); }
.faq details{ border-bottom:1px solid var(--border); padding:20px 4px; }
.faq summary{ cursor:pointer; font-weight:600; font-size:17px; list-style:none; display:flex; justify-content:space-between; gap:16px; }
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:"+"; font-family:var(--mono); color:var(--muted); flex-shrink:0; }
.faq details[open] summary::after{ content:"–"; }
.faq details p{ color:var(--muted); font-size:15.5px; margin-top:12px; max-width:60ch; }

@media (max-width:920px){
  .stats{ grid-template-columns:1fr 1fr; gap:26px; }
}
@media (max-width:520px){
  .stats{ grid-template-columns:1fr; }
}

/* Mock de conversa (demonstração do AgentX) */
.chat{
  max-width:420px; justify-self:end; background:#fff; border:1px solid var(--border);
  border-radius:22px; padding:20px 18px;
  box-shadow:0 24px 64px oklch(0.17 0.01 270 / .08);
}
.chat-head{
  font-family:var(--mono); font-size:12px; letter-spacing:.08em;
  color:var(--muted); border-bottom:1px solid var(--border);
  padding-bottom:12px; margin-bottom:6px; display:flex; justify-content:space-between;
}
.bolha{
  max-width:86%; padding:10px 14px; border-radius:14px;
  font-size:14.5px; line-height:1.45; margin-top:10px;
}
.bolha-agente{ background:var(--surface); border:1px solid var(--border); border-bottom-left-radius:4px; }
.bolha-cliente{ background:var(--ink); color:var(--ink-fg); margin-left:auto; border-bottom-right-radius:4px; }
.chat-status{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.06em;
  color:var(--muted); text-align:center; margin-top:14px;
  border-top:1px dashed var(--border); padding-top:12px;
}
@media (max-width:920px){
  .chat{ margin:0 auto; }
}

/* Entrada suave ao rolar */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .btn, .card{ transition:none; }
}