/* ============================================================
   AXI Portal de Tecnologia — Identidade visual
   Tema escuro sofisticado · gradiente ciano→azul→violeta
   ============================================================ */

:root {
  --bg:        #070a12;
  --bg-2:      #0b0f1c;
  --surface:   #10152400;
  --card:      #0e1424;
  --card-2:    #131b30;
  --line:      #1e2740;
  --line-soft: #161d33;
  --text:      #e8ecf6;
  --text-dim:  #9aa6c0;
  --text-mut:  #6b7794;

  --cyan:   #22d3ee;
  --blue:   #3b82f6;
  --violet: #8b5cf6;
  --grad:   linear-gradient(120deg, #22d3ee 0%, #3b82f6 48%, #8b5cf6 100%);
  --grad-soft: linear-gradient(120deg, rgba(34,211,238,.16), rgba(139,92,246,.16));

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px -18px rgba(0,0,0,.75);
  --maxw: 1180px;

  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(139,92,246,.14), transparent 60%),
    radial-gradient(1000px 500px at -5% 0%, rgba(34,211,238,.10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--card); color: var(--text); padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7,10,18,.72);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--font-head); }
.brand-mark { display: grid; place-items: center; filter: drop-shadow(0 4px 12px rgba(59,130,246,.4)); }
.brand-text { font-size: 21px; font-weight: 700; letter-spacing: .5px; }
.brand-dim { color: var(--text-dim); font-weight: 500; }

.site-nav { margin-left: 6px; }
.nav-list { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-list a {
  display: block; padding: 8px 14px; border-radius: 999px;
  font-size: 15px; font-weight: 500; color: var(--text-dim);
  transition: color .18s, background .18s;
}
.nav-list a:hover { color: var(--text); background: var(--card-2); }
.nav-list a::before {
  content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px;
  border-radius: 50%; background: var(--cat, var(--cyan)); vertical-align: middle;
  box-shadow: 0 0 8px var(--cat, var(--cyan));
}

.site-search { margin-left: auto; position: relative; display: flex; align-items: center; }
.site-search input {
  width: 210px; height: 40px; padding: 0 40px 0 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  color: var(--text); font-family: inherit; font-size: 14px; transition: border .18s, width .2s;
}
.site-search input:focus { outline: none; border-color: var(--blue); width: 240px; }
.site-search button {
  position: absolute; right: 6px; width: 30px; height: 30px; display: grid; place-items: center;
  background: transparent; border: 0; color: var(--text-dim); cursor: pointer;
}
.site-search button:hover { color: var(--cyan); }

.nav-toggle { display: none; }

/* ---------------- Hero ---------------- */
.hero-wrap { padding: 40px 22px 8px; }
.hero {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 0;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  position: relative;
}
.hero::before {
  content: ""; position: absolute; inset: 0; padding: 1px; border-radius: var(--radius);
  background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: .5; pointer-events: none;
}
.hero-media { overflow: hidden; }
.hero-media img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; transition: transform .5s; }
.hero-media:hover img { transform: scale(1.04); }
.hero-body { padding: 38px 40px; display: flex; flex-direction: column; justify-content: center; }
.hero-title { font-family: var(--font-head); font-size: clamp(26px, 3.4vw, 40px); line-height: 1.12; margin: 16px 0 12px; font-weight: 700; }
.hero-title a { background-image: var(--grad); background-clip: text; -webkit-background-clip: text; transition: color .2s; }
.hero-title a:hover { -webkit-text-fill-color: transparent; color: transparent; }
.hero-resumo { color: var(--text-dim); font-size: 18px; margin: 0 0 18px; }

/* ---------------- Categoria tag / chips ---------------- */
.card-cat {
  display: inline-block; align-self: flex-start;
  font-family: var(--font-head); font-size: 12px; font-weight: 600; letter-spacing: .8px; text-transform: uppercase;
  color: var(--cat, var(--cyan)); padding: 5px 11px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--cat, var(--cyan)) 40%, transparent);
  background: color-mix(in srgb, var(--cat, var(--cyan)) 12%, transparent);
}

/* ---------------- Seções ---------------- */
.secao { padding: 46px 22px; }
.secao-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 26px; }
.secao-head h1, .secao-head h2 {
  font-family: var(--font-head); font-size: 24px; font-weight: 700; margin: 0; position: relative; padding-left: 16px;
}
.secao-head h1::before, .secao-head h2::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; border-radius: 4px; background: var(--grad);
}
.link-mais { color: var(--text-dim); font-size: 14px; font-weight: 500; }
.link-mais:hover { color: var(--cyan); }

/* ---------------- Grid de cards ---------------- */
.grid-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--blue) 50%, var(--line)); box-shadow: var(--shadow); }
.card-media { display: block; aspect-ratio: 16/9; overflow: hidden; background: var(--card-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-title { font-family: var(--font-head); font-size: 19px; line-height: 1.28; margin: 0; font-weight: 600; }
.card-title a { transition: color .18s; }
.card-title a:hover { color: var(--cyan); }
.card-resumo { color: var(--text-dim); font-size: 15px; margin: 0; flex: 1; }
.card-meta { color: var(--text-mut); font-size: 13px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: auto; }

.card--lista { flex-direction: row; }
.card--lista .card-media { width: 150px; aspect-ratio: 1; flex-shrink: 0; }

/* ---------------- Artigo ---------------- */
.artigo { max-width: 800px; padding: 40px 22px; }
.breadcrumb { font-size: 13px; color: var(--text-mut); display: flex; gap: 8px; margin-bottom: 22px; }
.breadcrumb a:hover { color: var(--cyan); }
.artigo-head { margin-bottom: 26px; }
.artigo-titulo { font-family: var(--font-head); font-size: clamp(28px, 4.4vw, 46px); line-height: 1.12; margin: 16px 0 14px; font-weight: 700; }
.artigo-resumo { font-size: 20px; color: var(--text-dim); line-height: 1.5; margin: 0 0 20px; }
.artigo-meta { font-size: 14px; color: var(--text-mut); display: flex; gap: 9px; align-items: center; flex-wrap: wrap; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.artigo-meta strong { color: var(--text); font-weight: 600; }
.artigo-figura { margin: 0 0 30px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.artigo-corpo { font-size: 18px; line-height: 1.8; color: #d5dcec; }
.artigo-corpo h2 { font-family: var(--font-head); font-size: 27px; margin: 40px 0 14px; }
.artigo-corpo h3 { font-family: var(--font-head); font-size: 22px; margin: 32px 0 12px; }
.artigo-corpo p { margin: 0 0 20px; }
.artigo-corpo a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.artigo-corpo img { border-radius: var(--radius-sm); margin: 24px 0; border: 1px solid var(--line); }
.artigo-corpo blockquote {
  margin: 26px 0; padding: 6px 24px; border-left: 3px solid transparent;
  border-image: var(--grad) 1; color: var(--text); font-size: 20px; font-style: italic;
}
.artigo-corpo ul, .artigo-corpo ol { margin: 0 0 20px; padding-left: 24px; }
.artigo-corpo li { margin-bottom: 8px; }
.artigo-corpo pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px; overflow-x: auto; font-size: 14px; }
.artigo-corpo code { background: var(--card-2); padding: 2px 6px; border-radius: 5px; font-size: .9em; }
.artigo-fonte { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--text-mut); font-size: 14px; }
.artigo-fonte a { color: var(--cyan); }

/* ---------------- Editoria header ---------------- */
.editoria-head { margin-bottom: 30px; padding: 30px 34px; border-radius: var(--radius); background: var(--grad-soft); border: 1px solid var(--line); }
.editoria-tag { font-family: var(--font-head); font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--cat); }
.editoria-head h1 { font-family: var(--font-head); font-size: 34px; margin: 8px 0 6px; }
.editoria-head p { color: var(--text-dim); margin: 0; max-width: 640px; }

/* ---------------- Busca ---------------- */
.busca-form { display: flex; gap: 12px; margin-bottom: 24px; }
.busca-form input { flex: 1; height: 52px; padding: 0 20px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; color: var(--text); font-family: inherit; font-size: 16px; }
.busca-form input:focus { outline: none; border-color: var(--blue); }
.busca-form button, .paginacao a.ativo { background: var(--grad); color: #06121f; font-weight: 600; }
.busca-form button { height: 52px; padding: 0 28px; border: 0; border-radius: 12px; font-family: var(--font-head); font-size: 16px; cursor: pointer; }
.busca-info { color: var(--text-dim); margin-bottom: 22px; }

/* ---------------- Paginação ---------------- */
.paginacao { display: flex; gap: 8px; justify-content: center; margin-top: 38px; }
.paginacao a { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 10px; border: 1px solid var(--line); color: var(--text-dim); font-size: 15px; }
.paginacao a:hover { border-color: var(--blue); color: var(--text); }

/* ---------------- Vazio ---------------- */
.vazio { color: var(--text-dim); text-align: center; padding: 40px 0; }
.vazio a { color: var(--cyan); }

/* ---------------- Footer ---------------- */
.site-footer { margin-top: 40px; border-top: 1px solid var(--line-soft); background: var(--bg-2); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding: 50px 22px 36px; }
.footer-brand .brand-text { font-family: var(--font-head); font-size: 22px; font-weight: 700; }
.footer-brand p { color: var(--text-dim); margin: 14px 0 0; max-width: 380px; font-size: 15px; }
.footer-col h3 { font-family: var(--font-head); font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-mut); margin: 0 0 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer-col a { color: var(--text-dim); font-size: 15px; }
.footer-col a:hover { color: var(--cyan); }
.footer-base { display: flex; justify-content: space-between; align-items: center; padding: 20px 22px 30px; border-top: 1px solid var(--line-soft); color: var(--text-mut); font-size: 13px; }
.footer-base a { color: var(--text-dim); }
.footer-tag { font-family: var(--font-head); background-image: var(--grad); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* ---------------- Responsivo ---------------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-media img { min-height: 220px; }
  .grid-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .site-nav { position: fixed; inset: 68px 0 auto; background: var(--bg-2); border-bottom: 1px solid var(--line); transform: translateY(-120%); transition: transform .25s; }
  .site-nav.aberto { transform: translateY(0); }
  .nav-list { flex-direction: column; padding: 12px 22px; gap: 2px; }
  .nav-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; background: transparent; border: 0; cursor: pointer; order: 3; }
  .nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }
  .header-inner { gap: 12px; }
  .site-search { margin-left: auto; }
  .site-search input { width: 130px; }
  .site-search input:focus { width: 150px; }
  .grid-cards { grid-template-columns: 1fr; }
  .hero-body { padding: 26px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}