/* ====================================================================
   NexVirtus · estilos compartilhados do site institucional
   Núcleo comum à Home (index.html) e aos guias de instalação
   (windows.html, mac.html): tokens, tipografia base, nav, botões, modal,
   campos de formulário e rodapé. Cada página carrega este arquivo ANTES
   do seu <style> inline, então regras específicas de página continuam
   sobrescrevendo daqui quando precisarem. Tokens de layout que variam por
   página (ex.: --maxw) ficam no <style> de cada uma.
   ==================================================================== */
:root{
  --paper:#fbfcfd;        /* branco levíssimo frio */
  --paper-2:#f1f4f8;      /* superfície sutil cinza-azulada */
  --line:#dde3eb;         /* divisórias */
  --line-soft:#e7ebf1;
  --ink:#11161f;          /* texto forte */
  --ink-2:#414956;        /* texto médio */
  --ink-3:#6a7280;        /* texto fraco (escurecido p/ contraste AA em texto pequeno) */
  --accent:#0e6fb8;       /* cobalto/ciano único acento, contraste AA */
  --accent-deep:#0a5790;
  --accent-soft:#e7f1f9;
  --warn:#f5c842;
  --danger:#b91c1c;
  --radius:3px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Roboto',system-ui,-apple-system,sans-serif;
  font-size:14.5px;
  line-height:1.45;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
h1,h2,h3{font-family:'Roboto Condensed','Roboto',sans-serif;font-weight:600;line-height:1.08;letter-spacing:-0.005em;margin:0}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-deep)}
.accent{color:var(--accent)}

/* ---------- focus ---------- */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

/* ---------- nav ---------- */
nav{
  position:sticky;top:0;z-index:40;
  background:rgba(251,252,253,.9);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:58px}
.brand{display:flex;align-items:center;gap:10px}
.brand-logo{height:30px;width:auto;display:block}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:22px}
.nav-links a.link{color:var(--ink-2);font-size:14px;font-weight:500}
.nav-links a.link:hover{color:var(--ink)}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Roboto',sans-serif;font-size:14px;font-weight:500;cursor:pointer;
  border-radius:var(--radius);padding:10px 18px;border:1px solid transparent;
  text-decoration:none;white-space:nowrap;
  transition:background .15s,border-color .15s,color .15s,transform .05s,opacity .15s;
}
.btn:active{transform:translateY(1px)}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff}
.btn-outline{background:none;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--ink);background:var(--paper-2)}

/* ---------- modal ---------- */
.modal-backdrop{
  position:fixed;inset:0;z-index:60;background:rgba(17,22,31,.5);
  display:none;align-items:flex-start;justify-content:center;padding:44px 18px;overflow-y:auto;
}
.modal-backdrop.open{display:flex}
.modal{
  background:var(--paper);border:1px solid var(--line);border-radius:8px;
  width:100%;max-width:600px;box-shadow:0 24px 64px -20px rgba(17,22,31,.5);
  animation:rise .2s ease;
}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.modal-head{display:flex;align-items:flex-start;gap:14px;padding:20px 22px 14px;border-bottom:1px solid var(--line-soft)}
.modal-head h2{font-size:22px;flex:1;margin:0;font-family:'Roboto Condensed','Roboto',sans-serif;font-weight:600;color:var(--ink)}
.modal-head p{margin:4px 0 0;font-size:13px;color:var(--ink-3)}
.modal-close{
  background:none;border:1px solid var(--line);border-radius:var(--radius);
  width:32px;height:32px;flex:none;cursor:pointer;color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{background:var(--paper-2);color:var(--ink)}
.modal-close svg{width:16px;height:16px}
.modal-body{padding:18px 22px 22px}

/* ---------- form fields ---------- */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:6px}
.field .req-star{color:var(--accent)}
.field input,.field textarea,.field select{
  width:100%;font:inherit;font-size:14px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:9px 12px;transition:border-color .15s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}
.field textarea{resize:vertical;min-height:110px}
.char-count{text-align:right;font-size:11.5px;color:var(--ink-3);margin-top:5px}
.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:6px}
.form-status{font-size:13px;padding:9px 11px;border-radius:5px;margin-bottom:12px;display:none}
.form-status[data-kind="error"]{display:block;background:#fdecec;border:1px solid #f3c2c2;color:var(--danger)}
.form-status code{background:#fff;border:1px solid #f3c2c2;padding:1px 6px;border-radius:4px;font-family:ui-monospace,"SF Mono",Menlo,monospace}
.form-honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.form-success{text-align:center;padding:34px 18px}
.form-success svg{width:48px;height:48px;color:var(--accent);margin-bottom:14px}
.form-success h3{font-size:23px;margin:0 0 8px;font-family:'Roboto Condensed','Roboto',sans-serif;font-weight:600;color:var(--ink)}
.form-success p{color:var(--ink-2);font-size:14.5px;margin:0}
.ticket{font-family:'Roboto Condensed',sans-serif;font-weight:700;color:var(--accent-deep)}

/* ---------- footer (base) ---------- */
footer{border-top:1px solid var(--line-soft);padding:28px 0;margin-top:14px}
.foot-brand{display:flex;align-items:center;gap:9px}
.brand-logo-foot{height:22px;width:auto;display:block}
.foot-text{font-size:13px;color:var(--ink-3)}

/* ---------- menos movimento ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}