/* ============================================
   RAFFA ARAÚJO — Header, navegação e menu mobile
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17, 17, 17, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.logo span { color: var(--green); }

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 600;
}
.nav-links a { color: var(--muted); transition: color 0.15s ease; }
.nav-links a:hover { color: var(--white); }

.header-cta { display: none; }

.nav-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after { display: none; }
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--white); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: var(--graphite);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px 20px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--white);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu .btn { margin-top: 12px; }