/* =========================================================
   Formatos de trabalho — estilo compartilhado
   herda os tokens visuais do index.html
   ========================================================= */
:root{
  --ink:    #0a0b0e;
  --on:      #e7e9ee;
  --on-soft: #aeb4c0;
  --on-mute: #757c89;

  --signal:   oklch(0.80 0.15 158);
  --cyan:     oklch(0.80 0.13 210);
  --iris:     oklch(0.78 0.14 270);
  --amber:    oklch(0.82 0.14 78);

  --accent: var(--signal);
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 46%, transparent);
  --ink-on-accent:#07120d;

  --line: rgba(255,255,255,0.09);
  --line-strong: rgba(255,255,255,0.17);

  --panel:   rgba(255,255,255,0.028);
  --panel-2: rgba(255,255,255,0.06);

  --display:'Space Grotesk', system-ui, sans-serif;
  --body:'Space Grotesk', system-ui, sans-serif;
  --mono:'JetBrains Mono', ui-monospace, monospace;

  --gutter: clamp(24px, 6vw, 92px);
  --maxw: 1080px;
}
body[data-accent="signal"] { --accent: var(--signal); --ink-on-accent:#07120d; }
body[data-accent="cyan"]   { --accent: var(--cyan);   --ink-on-accent:#04141a; }
body[data-accent="iris"]   { --accent: var(--iris);   --ink-on-accent:#0c0a1a; }
body[data-accent="amber"]  { --accent: var(--amber);  --ink-on-accent:#1a1304; }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
html,body{ min-height:100%; }
body{
  margin:0; color:var(--on);
  font-family:var(--body); font-weight:350; font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; letter-spacing:-.005em;
  background:var(--ink);
}
body.lang-pt .en{ display:none !important; }
body.lang-en .pt{ display:none !important; }

.bg{ position:fixed; inset:0; z-index:-3;
  background:
    radial-gradient(110% 70% at 50% -15%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 58%),
    var(--ink);
}
.fx{ position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(58% 50% at 10% 6%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(60% 52% at 98% 96%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 58%);
}

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter); }

/* ---------- top bar ---------- */
.topbar{ position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between; gap:18px;
  padding:18px var(--gutter); background:linear-gradient(var(--ink), transparent); }
.brand{ font-family:var(--mono); font-weight:600; font-size:15px; letter-spacing:.02em; color:var(--on);
  text-decoration:none; display:inline-flex; align-items:center; gap:9px; }
.brand .mk{ color:var(--accent); }
.topbar-right{ display:inline-flex; align-items:center; gap:14px; }
.back{ font-family:var(--mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--on-mute);
  text-decoration:none; display:inline-flex; align-items:center; gap:7px; transition:color .2s; }
.back:hover{ color:var(--on); }
.lang-toggle{ display:inline-flex; border:1px solid var(--line-strong); border-radius:8px; overflow:hidden;
  font-family:var(--mono); font-size:11px; letter-spacing:.06em; background:rgba(255,255,255,.04); backdrop-filter:blur(8px); }
.lang-toggle button{ background:transparent; border:0; color:var(--on-mute); padding:7px 12px; cursor:pointer;
  font:inherit; letter-spacing:inherit; transition:color .2s, background .2s; }
.lang-toggle button.active{ color:var(--ink-on-accent); background:var(--accent); }

/* ---------- hero ---------- */
.fmt-hero{ padding:clamp(120px,18vh,180px) 0 clamp(40px,7vh,72px); }
.fmt-eyebrow{ font-family:var(--mono); font-size:12px; letter-spacing:.16em; text-transform:uppercase; color:var(--on-soft);
  display:inline-flex; align-items:center; gap:12px; }
.fmt-eyebrow .no{ color:var(--accent); }
.fmt-eyebrow::after{ content:""; width:34px; height:1px; background:var(--accent-line); }
.fmt-title{ font-family:var(--display); font-weight:440; font-size:clamp(34px,5.4vw,68px); line-height:1.05;
  letter-spacing:-.03em; color:var(--on); margin:22px 0 0; max-width:16ch; text-wrap:balance; }
.fmt-title em{ font-style:normal; color:var(--accent); }
.fmt-lead{ color:var(--on-soft); font-size:clamp(17px,2vw,22px); line-height:1.55; margin:24px 0 0; max-width:60ch; text-wrap:pretty; }

/* ---------- section scaffold ---------- */
.sec{ position:relative; padding:clamp(56px,10vh,104px) 0; border-top:1px solid var(--line); }
.sec::before{ content:""; position:absolute; left:var(--gutter); right:var(--gutter); top:-1px; height:1px;
  background:linear-gradient(90deg, var(--accent-line), transparent 55%); }
.sec-eyebrow{ font-family:var(--mono); font-size:12px; letter-spacing:.18em; text-transform:uppercase; color:var(--on-soft);
  display:inline-flex; align-items:center; gap:12px; }
.sec-eyebrow::after{ content:""; width:30px; height:1px; background:var(--accent-line); }
.sec-h{ font-family:var(--display); font-weight:450; font-size:clamp(27px,3.6vw,42px); line-height:1.1;
  letter-spacing:-.03em; margin:18px 0 0; color:var(--on); text-wrap:balance; }
.sec-h em{ font-style:normal; color:var(--accent); }
.sec-lead{ color:var(--on-soft); font-size:clamp(16px,1.8vw,19px); line-height:1.55; margin:18px 0 0; max-width:62ch; text-wrap:pretty; }

/* two-column: copy + illustration */
.split{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(32px,5vw,64px); align-items:center; margin-top:clamp(34px,5vh,52px); }
.figure{ border:1px solid var(--line); border-radius:16px; background:var(--panel); padding:clamp(20px,3vw,30px); }
.figure svg{ display:block; width:100%; height:auto; }
.figure figcaption{ font-family:var(--mono); font-size:11px; letter-spacing:.04em; color:var(--on-mute); margin-top:16px; text-align:center; }

/* ---------- "como funciona" steps ---------- */
.flow{ display:flex; flex-direction:column; gap:12px; margin-top:clamp(30px,4vh,44px); counter-reset:flow; }
.flow-item{ position:relative; border:1px solid var(--line); border-radius:13px; background:var(--panel);
  padding:22px 24px 22px 70px; transition:border-color .25s, background .25s; }
.flow-item:hover{ border-color:var(--accent-line); background:var(--panel-2); }
.flow-item::before{ counter-increment:flow; content:counter(flow,decimal-leading-zero);
  position:absolute; left:24px; top:22px; font-family:var(--mono); font-size:13px; font-weight:500; color:var(--accent); }
.flow-item h3{ font-family:var(--display); font-weight:500; font-size:clamp(17px,1.9vw,21px); letter-spacing:-.02em;
  color:var(--on); margin:0 0 6px; }
.flow-item p{ margin:0; color:var(--on-soft); font-size:15.5px; line-height:1.5; text-wrap:pretty; }

/* ---------- highlight cards (conceitos / quando usar) ---------- */
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:clamp(30px,4vh,44px); }
.card{ border:1px solid var(--line); border-radius:13px; background:var(--panel); padding:24px 22px;
  display:flex; flex-direction:column; gap:10px; transition:border-color .25s, background .25s, transform .25s; }
.card:hover{ border-color:var(--accent); background:var(--panel-2); transform:translateY(-3px); }
.card .ico{ width:26px; height:26px; color:var(--accent); }
.card h3{ font-family:var(--display); font-weight:500; font-size:17px; letter-spacing:-.015em; color:var(--on); margin:0; }
.card p{ margin:0; color:var(--on-soft); font-size:14.5px; line-height:1.5; text-wrap:pretty; }

/* ---------- exemplo ---------- */
.example{ border:1px solid var(--accent-line); border-radius:18px; overflow:hidden;
  background:linear-gradient(180deg, var(--accent-soft), transparent 70%), var(--panel); margin-top:clamp(34px,5vh,52px); }
.example-head{ display:flex; align-items:center; gap:12px; padding:22px clamp(24px,4vw,38px); border-bottom:1px solid var(--line); }
.example-tag{ font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-on-accent);
  background:var(--accent); padding:5px 11px; border-radius:7px; font-weight:600; }
.example-title{ font-family:var(--display); font-weight:500; font-size:clamp(18px,2.1vw,24px); letter-spacing:-.02em; color:var(--on); }
.example-body{ padding:clamp(24px,4vw,38px); }
.example-body p{ margin:0 0 16px; color:var(--on-soft); font-size:16.5px; line-height:1.6; text-wrap:pretty; }
.example-body p:last-child{ margin-bottom:0; }
.example-body strong{ color:var(--on); font-weight:600; }
.example-body .accent{ color:var(--accent); }
.example-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border-top:1px solid var(--line); }
.example-grid .cell{ background:var(--ink); padding:22px clamp(20px,3vw,28px); }
.example-grid .k{ font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--on-mute); }
.example-grid .v{ font-family:var(--display); font-weight:500; font-size:clamp(18px,2vw,22px); letter-spacing:-.02em; color:var(--on); margin-top:8px; line-height:1.2; }

/* ---------- cross-links ---------- */
.others{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin-top:clamp(30px,4vh,44px); }
.other{ display:flex; align-items:center; justify-content:space-between; gap:14px;
  border:1px solid var(--line); border-radius:12px; background:var(--panel); padding:18px 22px;
  text-decoration:none; color:var(--on); transition:border-color .25s, background .25s, transform .25s; }
.other:hover{ border-color:var(--accent); background:var(--panel-2); transform:translateY(-2px); }
.other .ol{ display:flex; flex-direction:column; gap:3px; }
.other .ok{ font-family:var(--mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--on-mute); }
.other .ov{ font-family:var(--display); font-weight:500; font-size:17px; letter-spacing:-.015em; }
.other .arr{ color:var(--accent); transition:transform .2s; }
.other:hover .arr{ transform:translateX(4px); }

/* ---------- CTA ---------- */
.cta{ text-align:center; }
.cta .links{ display:flex; flex-wrap:wrap; justify-content:center; gap:10px; margin-top:clamp(28px,4vh,40px); }
.btn{ font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--on); text-decoration:none; padding:14px 22px; border-radius:9px;
  border:1px solid var(--line-strong); background:var(--panel);
  display:inline-flex; align-items:center; gap:9px; cursor:pointer;
  transition:border-color .2s, background .2s, transform .2s, color .2s; }
.btn:hover{ border-color:var(--accent); color:#fff; background:var(--panel-2); transform:translateY(-2px); }
.btn.primary{ background:var(--accent); color:var(--ink-on-accent); border-color:transparent; font-weight:500; }
.btn.primary:hover{ transform:translateY(-2px); background:var(--accent); color:var(--ink-on-accent); }
.btn .ic{ width:16px; height:16px; }

/* ---------- footer ---------- */
.foot{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
  padding:26px 0 32px; margin-top:clamp(44px,7vh,80px); border-top:1px solid var(--line);
  font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--on-mute); }
.foot a{ color:var(--on-soft); text-decoration:none; }
.foot a:hover{ color:var(--on); }
.foot .dot{ color:var(--accent); }

/* ---------- floating WhatsApp ---------- */
.wa-fab{ position:fixed; right:22px; bottom:22px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  background:#25D366; color:#fff; text-decoration:none;
  box-shadow:0 8px 24px rgba(0,0,0,.35);
  transition:transform .2s, box-shadow .2s; animation:waPulse 2.8s ease-out infinite; }
.wa-fab:hover{ transform:translateY(-3px) scale(1.06); }
.wa-fab svg{ width:30px; height:30px; }
@keyframes waPulse{
  0%{ box-shadow:0 8px 24px rgba(0,0,0,.35), 0 0 0 0 rgba(37,211,102,.45); }
  70%{ box-shadow:0 8px 24px rgba(0,0,0,.35), 0 0 0 16px rgba(37,211,102,0); }
  100%{ box-shadow:0 8px 24px rgba(0,0,0,.35), 0 0 0 0 rgba(37,211,102,0); } }
@media (prefers-reduced-motion: reduce){ .wa-fab{ animation:none; } }

/* ---------- scroll reveal ---------- */
html.js .reveal{ opacity:0; transform:translateY(20px); transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
html.js .reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ html.js .reveal{ opacity:1; transform:none; transition:none; } }

/* ---------- diagram primitives (shared by inline SVGs) ---------- */
.dg-track{ fill:none; stroke:var(--line-strong); stroke-width:2; }
.dg-fill{ fill:none; stroke:var(--accent); stroke-width:2.5; stroke-linecap:round; }
.dg-box{ fill:var(--panel-2); stroke:var(--line-strong); }
.dg-box-accent{ fill:var(--accent-soft); stroke:var(--accent-line); }
.dg-dot{ fill:var(--accent); }
.dg-dot-mute{ fill:var(--on-mute); }
.dg-label{ font-family:var(--mono); font-size:13px; fill:var(--on-soft); }
.dg-label-strong{ font-family:var(--mono); font-size:13px; fill:var(--on); font-weight:500; }
.dg-label-accent{ font-family:var(--mono); font-size:13px; fill:var(--accent); }
.dg-axis{ font-family:var(--mono); font-size:11px; fill:var(--on-mute); }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .split{ grid-template-columns:1fr; gap:30px; }
  .cards{ grid-template-columns:repeat(3,1fr); }
  .example-grid{ grid-template-columns:repeat(3,1fr); }
}
@media (max-width:640px){
  .topbar{ padding:14px var(--gutter); }
  .cards{ grid-template-columns:1fr; }
  .example-grid{ grid-template-columns:1fr; }
  .others{ grid-template-columns:1fr; }
  .flow-item{ padding:20px 20px 20px 58px; }
  .flow-item::before{ left:20px; }
  .foot{ flex-direction:column; align-items:flex-start; gap:6px; }
  .wa-fab{ right:16px; bottom:16px; width:52px; height:52px; }
  .back .lbl{ display:none; }
}