/* =========================================================
   OXICORE Technology — estilos globais
   Paleta extraída da identidade visual (PROJETO-OXICORE-TECH.pdf)
   ========================================================= */
:root {
  --graphite: #232426;      /* preto/grafite do símbolo e painel escuro */
  --graphite-2: #2d2f31;
  --sage: #8fa6a0;          /* verde-sálvia principal */
  --sage-light: #c9d5d1;
  --sage-soft: #eef2f0;
  --teal: #294b4c;          /* petróleo (variação de papelaria) */
  --white: #ffffff;
  --text: #232426;
  --text-muted: #5b6563;
  --border: #dde4e1;

  --font-head: "Montserrat", system-ui, sans-serif;
  --font-body: "Open Sans", system-ui, sans-serif;

  --radius: 14px;
  --pill: 999px;
  --max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: var(--teal); }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0 0 .6em; color: var(--graphite); }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); font-weight: 700; letter-spacing: -.01em; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1.1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.section { padding: 96px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-size: .78rem; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase; color: var(--sage);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 28px; height: 6px; border-radius: var(--pill); background: currentColor; }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-head); font-weight: 600; font-size: .95rem;
  padding: 14px 28px; border-radius: var(--pill); border: 2px solid transparent;
  text-decoration: none; cursor: pointer; transition: transform .15s, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--sage); color: var(--graphite); }
.btn-primary:hover { background: var(--sage-light); }
.btn-outline { border-color: rgba(255,255,255,.35); color: var(--white); }
.btn-outline:hover { border-color: var(--sage); color: var(--sage); }
.btn-dark { background: var(--graphite); color: var(--white); }
.btn-dark:hover { background: var(--teal); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(35,36,38,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.nav-logo img { height: 40px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 34px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-family: var(--font-head); font-weight: 500; font-size: .93rem;
  color: rgba(255,255,255,.82); text-decoration: none; transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--sage); }
.nav-links .btn { padding: 10px 22px; color: var(--graphite); }
.nav-links .btn:hover { color: var(--graphite); }
.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: 8px;
  width: 44px; height: 44px; position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 10px; width: 24px; height: 3px; border-radius: 3px; background: var(--white); transition: .25s;
}
.nav-toggle span { top: 20px; }
.nav-toggle span::before { top: -8px; left: 0; }
.nav-toggle span::after { top: 8px; left: 0; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); background: var(--sage); }
.nav-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); background: var(--sage); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 600px at 85% 20%, #34393a 0%, var(--graphite) 60%);
  color: var(--white);
  padding: 120px 0 130px;
}
.hero h1 { color: var(--white); max-width: 14ch; }
.hero h1 em { font-style: normal; color: var(--sage); }
.hero-lead { font-size: 1.15rem; color: rgba(255,255,255,.75); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-symbol {
  position: absolute; right: -60px; top: 50%; transform: translateY(-50%) rotate(0deg);
  width: min(560px, 48vw); opacity: .9; pointer-events: none;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,.35));
}
.hero-symbol.on-dark { filter: brightness(1.0); }
.hero .container { position: relative; z-index: 2; }
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 54px; }
.tag {
  font-family: var(--font-head); font-size: .8rem; font-weight: 500; letter-spacing: .04em;
  padding: 7px 16px; border-radius: var(--pill);
  border: 1px solid rgba(143,166,160,.45); color: var(--sage-light);
}

/* Padrão de "pílulas" inspirado no símbolo */
.pill-band {
  height: 56px; background-color: var(--sage-soft);
  background-image: url("../img/pattern.svg"); background-size: 220px 56px; background-repeat: repeat-x;
}

/* ---------- Quem somos ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 72px; align-items: center; }
.about-text p { color: var(--text-muted); font-size: 1.06rem; }
.about-text p strong { color: var(--graphite); }
.about-card {
  background: var(--graphite); color: var(--white); border-radius: 22px; padding: 44px;
  position: relative; overflow: hidden;
}
.about-card blockquote {
  margin: 0; font-family: var(--font-head); font-size: 1.25rem; line-height: 1.45; font-weight: 500;
}
.about-card blockquote span { color: var(--sage); }
.about-card .sym { width: 74px; margin-bottom: 26px; }

/* ---------- Serviços ---------- */
.services { background: var(--sage-soft); }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head p { color: var(--text-muted); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.service:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(35,36,38,.08); border-color: var(--sage); }
.service-icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: var(--graphite); color: var(--sage); margin-bottom: 20px;
}
.service-icon svg { width: 24px; height: 24px; }
.service p { color: var(--text-muted); font-size: .97rem; margin: 0; }

/* ---------- Blog (cards) ---------- */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.post-card {
  display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); background: var(--white); text-decoration: none; color: inherit;
  transition: transform .2s, box-shadow .2s;
}
.post-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(35,36,38,.08); }
.post-cover {
  aspect-ratio: 16/9; display: grid; place-items: center; position: relative; overflow: hidden;
}
.post-cover img { width: 34%; opacity: .95; }
.cover-dark { background: var(--graphite); }
.cover-sage { background: var(--sage); }
.cover-teal { background: var(--teal); }
.post-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.post-meta { font-size: .8rem; color: var(--text-muted); margin-bottom: 10px; font-family: var(--font-head); letter-spacing: .03em; }
.post-meta .cat { color: var(--teal); font-weight: 600; text-transform: uppercase; letter-spacing: .1em; margin-right: 8px; }
.post-card h3 { margin-bottom: .5em; }
.post-card p { color: var(--text-muted); font-size: .95rem; margin: 0 0 18px; }
.read-more { margin-top: auto; font-family: var(--font-head); font-weight: 600; font-size: .9rem; color: var(--graphite); }
.read-more::after { content: " →"; color: var(--sage); }
.center { text-align: center; margin-top: 44px; }

/* ---------- Contato ---------- */
.contact { background: var(--graphite); color: var(--white); position: relative; overflow: hidden; }
.contact h2 { color: var(--white); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: start; }
.contact-info p { color: rgba(255,255,255,.72); }
.contact-list { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: center; }
.contact-list .ic {
  width: 42px; height: 42px; flex: none; border-radius: 50%; display: grid; place-items: center;
  background: rgba(143,166,160,.15); color: var(--sage);
}
.contact-list .ic svg { width: 20px; height: 20px; }
.contact-list a { color: var(--white); text-decoration: none; }
.contact-list a:hover { color: var(--sage); }
.contact-list small { display: block; color: rgba(255,255,255,.5); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; }

.form {
  background: var(--graphite-2); border: 1px solid rgba(255,255,255,.07);
  border-radius: 20px; padding: 36px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-family: var(--font-head); font-size: .8rem; font-weight: 500; letter-spacing: .04em; margin-bottom: 7px; color: rgba(255,255,255,.75); }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: .97rem; color: var(--white);
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; padding: 12px 14px; transition: border-color .2s, background .2s;
}
.field select option { color: var(--graphite); }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--sage); background: rgba(143,166,160,.06); }
.radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-group input { position: absolute; opacity: 0; pointer-events: none; }
.radio-group label {
  margin: 0; cursor: pointer; padding: 9px 18px; border-radius: var(--pill);
  border: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.8); font-size: .88rem; transition: .2s;
}
.radio-group input:checked + label { background: var(--sage); border-color: var(--sage); color: var(--graphite); font-weight: 600; }
.radio-group input:focus-visible + label { outline: 2px solid var(--sage); outline-offset: 2px; }
.form .btn { width: 100%; margin-top: 6px; }
.form-note { font-size: .8rem; color: rgba(255,255,255,.45); margin: 14px 0 0; text-align: center; }
.form-status { margin-top: 14px; font-size: .9rem; color: var(--sage); text-align: center; min-height: 1.2em; }

/* ---------- Footer ---------- */
.site-footer { background: #1b1c1d; color: rgba(255,255,255,.55); padding: 44px 0; font-size: .88rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
.footer-inner img { height: 34px; width: auto; }
.footer-inner nav { display: flex; gap: 24px; }
.footer-inner a { color: rgba(255,255,255,.7); text-decoration: none; }
.footer-inner a:hover { color: var(--sage); }

/* ---------- Página do blog ---------- */
.page-hero { background: var(--graphite); color: var(--white); padding: 84px 0 72px; position: relative; overflow: hidden; }
.page-hero h1 { color: var(--white); }
.page-hero p { color: rgba(255,255,255,.72); max-width: 600px; font-size: 1.08rem; margin: 0; }
.page-hero .hero-symbol { width: min(380px, 40vw); right: -40px; opacity: .55; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter {
  font-family: var(--font-head); font-size: .85rem; font-weight: 500; cursor: pointer;
  padding: 9px 18px; border-radius: var(--pill); border: 1px solid var(--border); background: var(--white); color: var(--text);
  transition: .2s;
}
.filter:hover { border-color: var(--sage); }
.filter.active { background: var(--graphite); border-color: var(--graphite); color: var(--white); }

/* ---------- Artigo ---------- */
.article-hero { background: var(--graphite); color: var(--white); padding: 80px 0 64px; }
.article-hero h1 { color: var(--white); max-width: 22ch; font-size: clamp(1.9rem, 4.4vw, 3rem); }
.article-hero .post-meta { color: rgba(255,255,255,.6); }
.article-hero .post-meta .cat { color: var(--sage); }
.back { display: inline-block; margin-bottom: 28px; font-family: var(--font-head); font-size: .88rem; color: var(--sage); text-decoration: none; }
.back:hover { color: var(--sage-light); }
.article { max-width: 760px; margin: 0 auto; padding: 64px 20px 96px; }
.article h2 { font-size: 1.55rem; margin-top: 1.8em; }
.article p, .article li { color: #3a3f3e; }
.article ul, .article ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.article li { margin-bottom: .4em; }
.article code { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .88em; background: var(--sage-soft); padding: 2px 6px; border-radius: 5px; }
.article pre {
  background: var(--graphite); color: #e6ebe9; padding: 22px 24px; border-radius: 12px; overflow-x: auto;
  font-size: .88rem; line-height: 1.6; margin: 0 0 1.5em; border-left: 4px solid var(--sage);
}
.article pre code { background: none; padding: 0; color: inherit; }
.callout { background: var(--sage-soft); border-left: 4px solid var(--sage); padding: 18px 22px; border-radius: 0 10px 10px 0; margin: 0 0 1.5em; }
.callout p:last-child { margin: 0; }
.article-cta { margin-top: 56px; background: var(--graphite); color: var(--white); border-radius: 18px; padding: 34px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.article-cta h3 { color: var(--white); margin: 0 0 4px; }
.article-cta p { color: rgba(255,255,255,.7); margin: 0; }

/* ---------- Responsivo ---------- */
@media (max-width: 960px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .services-grid, .posts-grid { grid-template-columns: 1fr 1fr; }
  .hero-symbol { opacity: .18; right: -120px; width: 480px; }
}
@media (max-width: 760px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--graphite); padding: 8px 20px 20px; border-bottom: 1px solid rgba(255,255,255,.08);
    display: none;
  }
  .nav-open .nav-links { display: flex; }
  .nav-links li a { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.06); }
  .nav-links li:last-child a { border: 0; margin-top: 14px; text-align: center; }
  .services-grid, .posts-grid, .form-row { grid-template-columns: 1fr; }
  .hero { padding: 84px 0 96px; }
  .about-card, .form { padding: 28px 22px; }
  .nav-logo img { height: 34px; }
}