/* ── Variáveis ── */
:root{
  --bg:#05070a; --bg-raised:#0b0f12;
  --surface:rgba(255,255,255,.035);
  --border:rgba(57,255,138,.16); --border-soft:rgba(255,255,255,.08);
  --green:#2fe871; --red:#ff4a5e; --amber:#ffb238;
  --text:#e8f1ec; --muted:#8a968f;
  --font-display:'Space Grotesk',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
  --font-body:'Inter',sans-serif;
}

/* ── Reset & base ── */
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.5;overflow-x:hidden;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green);}
.eyebrow.amber{color:var(--amber);}
.eyebrow.red{color:var(--red);}
h1,h2,h3{font-family:var(--font-display);letter-spacing:-.01em;}

/* ── Grade de fundo ── */
.grid-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(47,232,113,.05) 1px, transparent 1px),linear-gradient(90deg, rgba(47,232,113,.05) 1px, transparent 1px);
  background-size:42px 42px;mask-image:radial-gradient(ellipse 90% 60% at 50% 0%, #000 40%, transparent 100%);}

/* ── Navegação ── */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(10px);background:rgba(5,7,10,.75);border-bottom:1px solid var(--border-soft);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  background:linear-gradient(135deg,#0b1a10,#03110a);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-weight:700;color:var(--green);font-size:.95rem;overflow:hidden;}
.brand-mark img{width:100%;height:100%;object-fit:cover;border-radius:50%;}
.brand-name{font-family:var(--font-display);font-weight:600;font-size:1.05rem;}
.brand-tag{font-family:var(--font-mono);font-size:.65rem;color:var(--muted);letter-spacing:.05em;}
nav.links{display:flex;gap:28px;align-items:center;}
nav.links a{font-size:.88rem;color:var(--muted);transition:color .2s;}
nav.links a:hover{color:var(--green);}
nav.links a.active{color:var(--green);}
nav.links a.btn{display:none;}

/* ── Hamburger mobile ── */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
  background:none;border:1px solid var(--border-soft);border-radius:6px;
  width:40px;height:36px;padding:0;cursor:pointer;flex-shrink:0;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:0 auto;
  transition:transform .25s ease, opacity .25s ease;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-overlay{display:none;position:fixed;inset:0;background:rgba(3,5,8,.6);z-index:45;}
.nav-overlay.open{display:block;}

@media(max-width:860px){
  .nav-inner{gap:12px;}
  .nav-inner > a.btn{display:none;}
  .nav-toggle{display:flex;}
  nav.links{
    position:absolute;top:100%;left:0;right:0;width:100%;
    max-height:0;overflow:hidden;
    background:var(--bg-raised);border-bottom:1px solid var(--border-soft);
    flex-direction:column;align-items:stretch;
    padding:0 24px;gap:0;
    transition:max-height .3s ease;z-index:60;
  }
  nav.links.open{max-height:calc(100dvh - 64px);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding:8px 24px 24px;
    box-shadow:0 24px 50px -20px rgba(0,0,0,.6);}
  nav.links a{width:100%;padding:14px 0;font-size:1rem;border-bottom:1px solid var(--border-soft);}
  nav.links a.btn{display:inline-flex;margin:14px 0 6px;justify-content:center;border-bottom:none;}
}

/* ── Botões ── */
.btn{font-family:var(--font-mono);font-size:.8rem;letter-spacing:.03em;padding:11px 20px;border-radius:6px;
  border:1px solid var(--green);color:var(--green);background:transparent;cursor:pointer;transition:all .2s ease;
  display:inline-flex;align-items:center;gap:8px;}
.btn:hover{background:var(--green);color:#03130a;box-shadow:0 0 24px rgba(47,232,113,.35);}
.btn-solid{background:var(--green);color:#03130a;}
.btn-solid:hover{box-shadow:0 0 28px rgba(47,232,113,.45);}
.btn-block{width:100%;justify-content:center;padding:13px 20px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}

/* ── Dropdown Artigos ── */
.nav-dropdown{position:relative;}
.nav-dropdown-toggle{font-size:.88rem;color:var(--muted);cursor:pointer;display:flex;align-items:center;gap:5px;transition:color .2s;background:none;border:none;font-family:var(--font-body);padding:0;line-height:1;}
.nav-dropdown-toggle:hover,.nav-dropdown.open .nav-dropdown-toggle{color:var(--green);}
.nav-dropdown-toggle .arr{font-size:.6rem;transition:transform .2s;display:inline-block;}
.nav-dropdown.open .nav-dropdown-toggle .arr{transform:rotate(180deg);}
.nav-dropdown-menu{display:none;position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%);
  background:#0b0f12;border:1px solid var(--border);border-radius:12px;padding:6px;min-width:210px;
  box-shadow:0 16px 40px rgba(0,0,0,.6);z-index:200;}
.nav-dropdown.open .nav-dropdown-menu{display:block;}
.nav-dropdown-menu a{display:block;padding:9px 14px;font-size:.85rem;color:var(--muted);border-radius:8px;transition:all .2s;white-space:nowrap;width:100%;}
.nav-dropdown-menu a:hover{background:rgba(47,232,113,.07);color:var(--green);}
.nav-dropdown-menu a.active{color:var(--green);}
@media(max-width:860px){
  .nav-dropdown{width:100%;}
  .nav-dropdown-toggle{width:100%;padding:14px 0;font-size:1rem;border-bottom:1px solid var(--border-soft);justify-content:space-between;}
  .nav-dropdown-menu{position:static;transform:none;box-shadow:none;border:none;border-radius:0;
    background:transparent;padding:0 0 0 16px;min-width:0;}
  .nav-dropdown-menu a{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.04);border-radius:0;font-size:.95rem;}
}

/* ── Rodapé ── */
footer{position:relative;z-index:1;border-top:1px solid var(--border-soft);padding:36px 0;}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;}
.footer-links{display:flex;gap:20px;}
.footer-links a{color:var(--muted);font-size:.85rem;}
.footer-links a:hover{color:var(--green);}
footer p{color:#5a655f;font-size:.8rem;}

/* ── Tempo de leitura ── */
.reading-time{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);
  margin-top:14px;display:inline-flex;align-items:center;gap:6px;letter-spacing:.03em;
  border:1px solid var(--border-soft);border-radius:20px;padding:4px 12px;}