/* ==========================================================================
   layout.css — Cabeçalho, navegação e rodapé (compartilhados)
   © @JottaCyber
   ========================================================================== */

/* ---- Header / Navbar ---- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: var(--maxw); margin-inline: auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 18px;
}
.brand-mark { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); }
.brand-mark:hover { text-decoration: none; }
.brand-mark .logo { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; border: 1.5px solid var(--accent); }
.brand-mark .handle { font-family: var(--font-mono); font-size: 15px; }
.brand-mark .handle b { color: var(--accent); }

.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav-links a {
  color: var(--muted); font-size: 14px; font-weight: 500; padding: 8px 14px; border-radius: 9px;
}
.nav-links a:hover { color: var(--ink); background: var(--surface-2); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }

.theme-btn {
  background: var(--surface); border: 1px solid var(--line); color: var(--ink);
  border-radius: 999px; width: 38px; height: 38px; cursor: pointer; font-size: 15px;
  display: grid; place-items: center; flex: none;
}
.theme-btn:hover { border-color: var(--accent); }

.nav-toggle {
  display: none; background: var(--surface); border: 1px solid var(--line); color: var(--ink);
  border-radius: 9px; width: 38px; height: 38px; cursor: pointer; font-size: 18px; place-items: center;
}

/* seletor de idioma PT / EN */
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--surface); flex: none; }
.lang-switch button {
  border: none; background: transparent; color: var(--muted);
  font-family: var(--font-mono); font-weight: 600; font-size: 12px; padding: 8px 12px; cursor: pointer;
}
.lang-switch button:hover { color: var(--ink); }
.lang-switch button[aria-pressed="true"] { background: var(--accent); color: var(--accent-contrast); }

@media (max-width: 640px) {
  .lang-switch { order: 2; margin-left: auto; }
  .theme-btn { order: 3; margin-left: 0; }
  .nav-toggle { display: grid; order: 4; }
  .nav-links {
    order: 5; flex-basis: 100%; margin-left: 0; flex-direction: column; align-items: stretch;
    gap: 2px; padding-top: 10px;
  }
  .nav-links:not(.open) { display: none; }
  .nav-links a { padding: 12px 14px; }
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line); background: var(--surface-2);
  padding-block: 34px calc(34px + env(safe-area-inset-bottom, 0px));
  margin-top: auto;
}
.footer-inner {
  max-width: var(--maxw); margin-inline: auto; padding-inline: 20px;
  display: flex; flex-wrap: wrap; gap: 18px 32px; align-items: center; justify-content: space-between;
}
.footer-brand { font-family: var(--font-mono); font-size: 13px; color: var(--muted); }
.footer-brand b { color: var(--accent); }
/* botões de rede social com ícone */
.social-icons { display: flex; gap: 10px; align-items: center; }
.social-icons a {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; flex: none;
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  transition: color .12s, background .12s, border-color .12s, transform .12s;
}
.social-icons a:hover {
  color: var(--accent-contrast); background: var(--accent); border-color: var(--accent);
  transform: translateY(-2px); text-decoration: none;
}
.social-icons svg { width: 18px; height: 18px; fill: currentColor; display: block; }
.footer-copy { flex-basis: 100%; font-size: 11.5px; color: var(--muted); font-family: var(--font-mono); border-top: 1px dashed var(--line); padding-top: 14px; }