/* Bultech v3 — paleta Marinho Grafite (branco, azul, marinho). Ordem: tokens, base, botões, cabeçalho, hero, seções, formulário, rodapé, vidro, responsivo, preferências. */

:root{
  --paper:#ffffff;
  --ink:#0b1220;
  --dark:#0f172a;
  --dark-2:#1e293b;
  --accent:#1d4ed8;
  --accent-hover:#1e40af;
  --accent-soft:#93c5fd;
  --muted:#5b6678;
  --line:#e2e8f0;
  --field-border:#8692a6;
  --tint:#f1f5f9;
  --on-dark:#f8fafc;
  --on-dark-muted:rgba(255,255,255,.72);
  --radius:18px;
  --radius-sm:12px;
  --pill:999px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Helvetica,Arial,sans-serif;
  --header-h:56px;
  --section:120px;
  --glass-blur:20px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}

h1,h2,h3,p,ul,ol{margin-top:0}
h1{font-size:clamp(42px,5.6vw,72px);font-weight:600;line-height:1.05;letter-spacing:-.02em;margin-bottom:20px;max-width:16em}
h2{font-size:clamp(30px,4vw,48px);font-weight:600;line-height:1.08;letter-spacing:-.015em;margin-bottom:16px}
h3{font-size:24px;font-weight:600;line-height:1.2;letter-spacing:-.01em;margin-bottom:12px}
.eyebrow{font-size:14px;font-weight:600;color:var(--accent);margin-bottom:14px}
.lead{max-width:34em;color:var(--muted);font-size:21px;line-height:1.4}
.muted{color:var(--muted)}
.fine{font-size:14px;color:var(--muted);max-width:48em}
.wrap{max-width:1120px;margin:auto;padding-left:40px;padding-right:40px}
.center{text-align:center}
.center h1,.center h2,.center .lead,.center p{margin-left:auto;margin-right:auto}

/* Botões: pílula, sem sombra, hover só escurece */
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 24px;border:0;border-radius:var(--pill);background:var(--accent);color:#fff;font-weight:500;font-size:17px;cursor:pointer;transition:background-color .15s ease}
.button:hover{background:var(--accent-hover)}
.button.light{background:var(--accent);color:#fff;border:1px solid transparent}
.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 20px;border:1px solid var(--accent);border-radius:var(--pill);background:transparent;color:var(--accent);cursor:pointer;font-weight:500;transition:background-color .15s ease,color .15s ease}
.secondary:hover{background:var(--accent);color:#fff}
.text-link{display:inline-flex;align-items:center;justify-content:center;min-height:48px;font-size:17px;font-weight:500;color:var(--accent)}
.text-link:hover{text-decoration:underline}

/* Cabeçalho */
.header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:var(--header-h);padding:6px max(40px,calc((100vw - 1040px)/2));background:var(--paper);border-bottom:1px solid rgba(11,18,32,.08)}
.wordmark{display:inline-flex;align-items:center;gap:1px;font-weight:700;font-size:21px;letter-spacing:-.02em}
.logo-crop{position:relative;display:block;width:58px;height:44px;overflow:hidden;background:#fff;border-radius:8px;flex-shrink:0}
.logo-crop img{position:absolute;width:152px;max-width:none;left:-47px;top:-19px}
.brand-suffix{color:var(--ink)}
.header nav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:400}
.header nav a{min-height:44px;display:inline-flex;align-items:center;color:rgba(11,18,32,.82)}
.header nav a:hover{color:var(--accent)}
.nav-cta{color:var(--ink)!important;border:1px solid rgba(11,18,32,.12);border-radius:var(--pill);padding:0 16px;background:#fff;font-weight:500}
.menu{display:none;min-height:44px;padding:8px 16px;border:1px solid var(--line);border-radius:var(--pill);background:transparent;cursor:pointer;font-weight:500}

/* Abertura: texto centrado, cartão abaixo */
.hero{padding-top:96px;padding-bottom:var(--section);text-align:center}
.hero .eyebrow{margin-bottom:18px}
.hero h1{margin-left:auto;margin-right:auto}
.hero .lead{margin-left:auto;margin-right:auto}
.actions{display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap;margin:32px 0 20px}
.hero-note{font-size:15px;color:var(--muted);margin-bottom:56px}
.visual{max-width:880px;margin:0 auto;padding:32px;border-radius:var(--radius);color:var(--on-dark);background:var(--dark);text-align:left}
.visual-top{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;color:var(--on-dark-muted)}
.dot{width:8px;height:8px;background:var(--accent-soft);border-radius:50%;flex-shrink:0}
.brand-showcase{background:#fff;border-radius:var(--radius-sm);margin:24px 0;overflow:hidden;max-width:520px}
.brand-showcase img{width:100%}
.visual-rows{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.visual-row{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--radius-sm);background:var(--dark-2);font-size:15px}
.visual-row span{color:var(--on-dark-muted);font-size:13px}
.visual-row b{font-weight:600}

/* Seções: sem linhas; a separação é a alternância de fundo */
.section{padding-top:var(--section);padding-bottom:var(--section)}
.section.tint{background:var(--tint)}
.section-head{max-width:40em;margin:0 auto 56px;text-align:center}
.section-head h2{margin-bottom:12px}
.section-head>p{color:var(--muted);font-size:19px;margin:0}

/* Soluções: três cards */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.services article{padding:32px;border-radius:var(--radius);background:var(--paper)}
.services p,.services ul{color:var(--muted);font-size:16px}
.services ul{padding-left:20px;margin-bottom:24px}
.services li{margin-bottom:6px}
.services a{display:inline-flex;align-items:center;min-height:44px;font-size:16px;font-weight:500;color:var(--accent)}
.services a:hover{text-decoration:underline}

/* Serviços e níveis */
.package-intro{max-width:40em;color:var(--muted);font-size:19px;margin:0 auto 48px;text-align:center}
.package-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:0 0 40px;align-items:start}
.package-card{margin:0;padding:24px 24px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);min-width:0}
.package-card legend{padding:0;font-size:19px;font-weight:600;line-height:1.25;letter-spacing:-.01em}
.levels{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0 12px}
.levels label{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 6px;border:1px solid var(--line);border-radius:var(--pill);background:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,color .15s ease}
.levels input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.levels label:has(input:checked){background:var(--accent);color:#fff;border-color:var(--accent)}
.levels label:has(input:focus-visible){outline:3px solid var(--accent);outline-offset:2px}
.level-desc{min-height:2.6em;margin:0;font-size:14px;color:var(--muted)}
.package-actions{text-align:center}
.package-actions .fine{margin:0 auto 20px}

/* IA de atendimento: faixa marinho */
.atendimento{background:var(--dark);color:var(--on-dark);padding:var(--section) 0}
.atendimento-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.atendimento-grid>*{min-width:0}
.atendimento .eyebrow{color:var(--accent-soft)}
.atendimento-grid>div>p:not(.eyebrow){max-width:30em;color:var(--on-dark-muted);font-size:19px}
.product{padding:40px;border-radius:var(--radius);background:var(--dark-2)}
.product-label{display:block;font-size:14px;font-weight:600;color:var(--accent-soft);margin-bottom:24px}
.product h3{font-size:30px}
.product p{font-size:16px;color:var(--on-dark-muted)}
.benefit{margin:24px 0;font-size:21px;font-weight:600;line-height:1.3;color:var(--on-dark)}
.product .fine{color:rgba(255,255,255,.56)}

/* Na prática */
.tabs{display:inline-flex;gap:4px;padding:4px;margin:0 auto 32px;border-radius:var(--pill);background:#e6ebf2}
.tabs-wrap{text-align:center}
.tabs button{min-height:40px;padding:8px 18px;border:0;border-radius:var(--pill);background:transparent;cursor:pointer;font-size:15px;font-weight:500;color:var(--ink);transition:background-color .15s ease}
.tabs button[aria-pressed=true]{background:#fff;box-shadow:0 1px 3px rgba(11,18,32,.12)}
.example{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:48px;border-radius:var(--radius);background:var(--paper);min-height:250px}
.example>*{min-width:0}
.tag{display:block;font-size:14px;font-weight:600;color:var(--accent);margin-bottom:16px}
.example h3{max-width:14em;font-size:30px}
.example p{font-size:17px}

/* Processo (sequência real: mantém numeração) */
.process{padding-top:var(--section);padding-bottom:var(--section)}
.process ol{list-style:none;counter-reset:steps;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:0;margin:0}
.process li{padding:28px;border-radius:var(--radius);background:var(--tint);counter-increment:steps}
.process li::before{content:'0' counter(steps);display:block;font-size:14px;font-weight:600;color:var(--accent);margin-bottom:18px}
.process b{font-size:21px;font-weight:600}
.process li p{font-size:16px;color:var(--muted);margin:8px 0 0}

/* Formulário */
.project{display:grid;grid-template-columns:1fr 1fr;gap:72px}
.project>*{min-width:0}
.project>div>p{max-width:30em}
form{display:flex;flex-direction:column;gap:6px;padding:40px;border-radius:var(--radius);background:var(--paper)}
label{font-size:14px;font-weight:500;color:var(--muted)}
input,select,textarea{width:100%;min-height:52px;margin-bottom:14px;padding:14px 16px;border:1px solid var(--field-border);border-radius:var(--radius-sm);background:#fff;color:var(--ink);font-size:17px;transition:border-color .15s ease,box-shadow .15s ease}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(29,78,216,.25)}
textarea{resize:vertical}
form .button{align-self:start}
#summary-panel{margin-top:20px}
#summary-panel label{display:block;margin-bottom:8px}
#form-status{font-size:14px;min-height:24px;color:var(--muted)}

/* Rodapé */
footer{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding-top:32px;padding-bottom:32px;border-top:1px solid var(--line);background:var(--tint)}
footer p{font-size:14px;margin:0}
footer small{font-size:13px;margin-left:auto;color:var(--muted)}
.footer-band{background:var(--tint)}
.skip{position:fixed;top:-100px;left:20px;padding:12px;background:#fff;z-index:100;border-radius:8px}
.skip:focus{top:10px}

/* Vidro: cabeçalho, botão da navegação e botão da faixa marinho. Sólido é o padrão. */
@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .header{background:rgba(255,255,255,.78);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%)}
  .nav-cta{background:rgba(255,255,255,.6);border-color:rgba(11,18,32,.14);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
  .button.light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.32);-webkit-backdrop-filter:blur(12px) saturate(140%);backdrop-filter:blur(12px) saturate(140%)}
  .button.light:hover{background:rgba(255,255,255,.22)}
}
@media(hover:hover){
  .levels label:hover{border-color:var(--accent)}
  .nav-cta:hover{border-color:var(--accent)}
}
.atendimento :focus-visible{outline-color:var(--accent-soft)}
.visual :focus-visible{outline-color:var(--accent-soft)}

/* Responsivo */
@media(max-width:1100px){
  .package-grid{gap:20px}
}
@media(max-width:900px){
  :root{--header-h:52px;--section:80px}
  .wrap{padding-left:24px;padding-right:24px}
  .header{flex-wrap:wrap;padding:4px 24px}
  .menu{display:block}
  .header nav{display:none;width:100%;flex-direction:column;align-items:stretch;gap:2px;padding:8px 0 12px}
  .header nav.open{display:flex}
  .header nav a{padding:10px 12px;border-radius:12px;font-size:16px}
  .header .nav-cta{justify-content:center;margin-top:8px;padding:10px 18px}
  .hero{padding-top:64px}
  .atendimento-grid,.project{gap:40px}
  .visual{padding:24px}
  .services{grid-template-columns:1fr}
  .services article{padding:28px}
}
@media(max-width:680px){
  :root{--section:64px}
  .hero{padding-top:48px}
  .lead{font-size:19px}
  .section-head{margin-bottom:36px}
  .section-head>p,.package-intro,.atendimento-grid>div>p:not(.eyebrow){font-size:17px}
  .visual-rows{grid-template-columns:1fr}
  .package-grid{grid-template-columns:1fr}
  .atendimento-grid,.project,.example{grid-template-columns:1fr;gap:28px}
  .product{padding:28px}
  .example{padding:28px}
  .process ol{grid-template-columns:1fr 1fr}
  form{padding:24px}
  footer{gap:14px}
  footer small{margin:0;width:100%}
}
@media(max-width:380px){
  .wrap{padding-left:18px;padding-right:18px}
  .header{padding-left:18px;padding-right:18px}
  h1{font-size:38px}
  .actions{align-items:stretch;flex-direction:column}
  .process ol{grid-template-columns:1fr}
  .levels{grid-template-columns:1fr 1fr}
  .tabs{display:flex;flex-wrap:wrap;border-radius:20px}
}
.wide-break{display:none}
@media(min-width:681px){.wide-break{display:inline}}

/* Preferências do sistema */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important}
}
@media(prefers-reduced-transparency:reduce){
  .header{background:var(--paper)}
  .nav-cta{background:#fff}
  .button.light{background:var(--accent);border-color:transparent}
  .header,.nav-cta,.button.light{-webkit-backdrop-filter:none;backdrop-filter:none}
}
@media(forced-colors:active){
  .header,.nav-cta,.button,.secondary,.levels label,.tabs button{background:Canvas;color:CanvasText;border:1px solid ButtonText;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
  .levels label:has(input:checked),.tabs button[aria-pressed=true]{background:Highlight;color:HighlightText}
}