/* CoreAxis Tech Toolbox — site oficial (GitHub Pages) */
:root {
  --noite: #060b16;
  --nucleo: #0b2545;
  --profundo: #123a63;
  --grafite: #1a2433;
  --superficie: #0d1527;
  --borda: #1b2943;
  --turquesa: #0baec2;
  --turquesa-claro: #5fd4e0;
  --acao: #1e7bff;
  --texto: #e3e8ee;
  --muted: #8ea3bf;
  --ok: #22c55e;
  --erro: #ef4444;
  --alerta: #f5a524;
  --raio: 14px;
  --fonte: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --mono: "Cascadia Mono", Consolas, "SFMono-Regular", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--noite); color: var(--texto); font: 16px/1.6 var(--fonte); }
a { color: var(--turquesa-claro); }
a:hover { color: #fff; }
img { max-width: 100%; }
code, pre, .mono { font-family: var(--mono); }
code { background: #0a1426; border: 1px solid var(--borda); padding: 1px 6px; border-radius: 6px; font-size: .9em; }
:focus-visible { outline: 3px solid var(--turquesa); outline-offset: 2px; }
.wrap { width: min(1120px, 100% - 40px); margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--acao); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

/* cabeçalho */
header.top { position: sticky; top: 0; z-index: 5; background: rgba(6, 11, 22, .88); backdrop-filter: blur(10px); border-bottom: 1px solid var(--borda); }
header.top .wrap { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--texto); text-decoration: none; font-weight: 600; white-space: nowrap; }
.brand img { width: 32px; height: 32px; }
.brand span b { color: var(--turquesa); font-weight: 600; }
nav.menu { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
nav.menu a { color: var(--muted); text-decoration: none; padding: 8px 12px; border-radius: 8px; font-size: 15px; }
nav.menu a:hover, nav.menu a[aria-current="page"] { color: var(--texto); background: var(--grafite); }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--borda); color: var(--texto); border-radius: 8px; padding: 6px 10px; font-size: 18px; }

/* botões */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid var(--borda); color: var(--texto); background: var(--grafite); cursor: pointer; font: inherit; }
.btn:hover { border-color: var(--turquesa); color: #fff; }
.btn.primario { background: var(--acao); border-color: transparent; color: #fff; box-shadow: 0 8px 24px rgba(30, 123, 255, .3); }
.btn.primario:hover { filter: brightness(1.1); }
.btn.grande { padding: 15px 26px; font-size: 17px; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 84px 0 70px; background:
  radial-gradient(800px 400px at 80% 0%, rgba(11, 174, 194, .18), transparent 60%),
  radial-gradient(700px 400px at 0% 100%, rgba(30, 123, 255, .12), transparent 60%),
  linear-gradient(180deg, var(--nucleo), var(--noite)); }
.hero .wrap { display: grid; grid-template-columns: 1.3fr .9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: var(--turquesa); }
.hero p.lead { font-size: 19px; color: #c7d3e3; margin: 0 0 28px; max-width: 620px; }
.hero .acoes { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .meta { margin-top: 18px; font-size: 14px; color: var(--muted); }
.hero .icone { justify-self: center; width: min(320px, 70vw); filter: drop-shadow(0 20px 50px rgba(11, 174, 194, .35)); }

/* seções */
section { padding: 70px 0; }
section.alt { background: linear-gradient(180deg, #08101f, var(--noite)); border-top: 1px solid var(--borda); border-bottom: 1px solid var(--borda); }
h2 { font-size: clamp(26px, 3.4vw, 36px); margin: 0 0 10px; letter-spacing: -.3px; }
.sub { color: var(--muted); margin: 0 0 36px; max-width: 720px; }
.grade { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.cartao { background: var(--superficie); border: 1px solid var(--borda); border-radius: var(--raio); padding: 22px; }
.cartao h3 { margin: 8px 0 6px; font-size: 18px; }
.cartao p, .cartao li { color: #b9c6d8; font-size: 15px; margin: 0; }
.cartao ul { padding-left: 18px; margin: 8px 0 0; }
.cartao .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; font-size: 22px; background: rgba(11, 174, 194, .14); }
.selos { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.selo { display: inline-flex; gap: 8px; align-items: center; padding: 7px 12px; border-radius: 999px; background: var(--grafite); border: 1px solid var(--borda); font-size: 14px; color: #c7d3e3; }
.selo b { color: var(--turquesa); }

/* blocos */
pre { background: #050a14; border: 1px solid var(--borda); border-radius: 10px; padding: 14px 16px; overflow-x: auto; color: #d6e4ff; font-size: 14px; }
.hash { font-family: var(--mono); font-size: 14px; word-break: break-all; background: #050a14; border: 1px dashed var(--turquesa); color: var(--turquesa-claro); padding: 12px 14px; border-radius: 10px; }
.aviso { border-left: 4px solid var(--alerta); background: rgba(245, 165, 36, .1); padding: 12px 16px; border-radius: 8px; margin: 16px 0; }
.info { border-left: 4px solid var(--turquesa); background: rgba(11, 174, 194, .1); padding: 12px 16px; border-radius: 8px; margin: 16px 0; }
.passos { counter-reset: p; list-style: none; padding: 0; }
.passos li { counter-increment: p; position: relative; padding: 0 0 18px 50px; }
.passos li::before { content: counter(p); position: absolute; left: 0; top: 0; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; background: var(--acao); color: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--borda); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .5px; }

/* verificador */
.drop { border: 2px dashed var(--borda); border-radius: var(--raio); padding: 40px 20px; text-align: center; background: var(--superficie); cursor: pointer; transition: .15s; }
.drop.ativo, .drop:hover { border-color: var(--turquesa); background: rgba(11, 174, 194, .06); }
.drop input { display: none; }
.resultado { margin-top: 18px; padding: 18px; border-radius: var(--raio); display: none; }
.resultado.ok { display: block; background: rgba(34, 197, 94, .12); border: 1px solid rgba(34, 197, 94, .5); }
.resultado.erro { display: block; background: rgba(239, 68, 68, .12); border: 1px solid rgba(239, 68, 68, .5); }
.resultado.neutro { display: block; background: var(--superficie); border: 1px solid var(--borda); }
.barra { height: 8px; background: #0a1224; border-radius: 6px; overflow: hidden; margin-top: 14px; display: none; }
.barra > div { height: 100%; width: 0; background: linear-gradient(90deg, var(--acao), var(--turquesa)); transition: width .2s; }

/* changelog */
.versao { border-left: 3px solid var(--turquesa); padding-left: 18px; margin-bottom: 34px; }
.versao h3 { margin: 0; font-size: 22px; }
.versao .data { color: var(--muted); font-size: 14px; }
.versao h4 { margin: 14px 0 6px; color: var(--turquesa-claro); font-size: 15px; text-transform: uppercase; letter-spacing: .6px; }
.versao ul { margin: 0; padding-left: 20px; color: #c7d3e3; }

/* rodapé */
footer { border-top: 1px solid var(--borda); padding: 34px 0; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; gap: 20px; justify-content: space-between; flex-wrap: wrap; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero .icone { order: -1; width: 160px; }
  .menu-btn { display: block; }
  nav.menu { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--noite); border-bottom: 1px solid var(--borda); padding: 10px 20px; }
  nav.menu.aberto { display: flex; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }