nav.brio-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(16px, 5vw, 48px);
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--brio-border);
}
.nav-logo {
  font-family: var(--brio-font-display);
  font-size: 1.6rem; font-weight: 800; letter-spacing: 0.01em;
  color: var(--brio-text);
}
.nav-logo .dot { color: var(--brio-red); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.btn-nav-ghost {
  display: flex; align-items: center; gap: 7px;
  background: transparent; border: 1px solid var(--brio-border);
  color: var(--brio-text-muted); font-size: 0.82rem; font-weight: 600;
  padding: 8px 14px; border-radius: 7px; cursor: pointer;
  transition: border-color .2s, color .2s; text-decoration: none;
}
.btn-nav-ghost:hover { border-color: rgba(255,255,255,.2); color: var(--brio-text); }
.btn-nav {
  display: flex; align-items: center; gap: 7px;
  background: var(--brio-red); color: var(--brio-text);
  font-size: 0.85rem; font-weight: 700;
  padding: 9px 18px; border-radius: 7px;
  border: none; cursor: pointer; text-decoration: none;
  transition: background .2s, transform .15s;
}
.btn-nav:hover { background: var(--brio-red-dark); transform: translateY(-1px); }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--brio-text); border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none; position: fixed; top: 60px; left: 0; right: 0; z-index: 99;
  background: #111; border-bottom: 1px solid var(--brio-border);
  padding: 16px clamp(16px,5vw,48px); flex-direction: column; gap: 10px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: 8px;
  background: var(--brio-card); font-weight: 600; font-size: .95rem;
  color: var(--brio-text); text-decoration: none;
}
.mobile-menu a.red-btn { background: var(--brio-red); }

@media (max-width: 640px) {
  .hamburger { display: flex; }
  .btn-nav-ghost { display: none; }
  .nav-logo img { height: 35px !important; }
}