.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 900px;
  margin: 0 auto;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e5e7eb;
}
.brand {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #1a1a1a;
  text-decoration: none;
}
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  padding: 6px 14px;
  border-radius: 20px;
  color: #555;
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { background: #eef0f2; color: #1a1a1a; }
.nav-links a.active { background: #3b82f6; color: #fff; }