/* ============================================================
   NAV
   Application-wide fixed navigation bar.
   ============================================================ */

.app-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 2rem;
  background: rgba(13, 27, 110, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.app-nav a.nav-brand {
  color: var(--color-white);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.app-nav a.nav-brand::before {
  content: "🎈 ";
}

.app-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-nav .nav-right a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  transition: color 0.15s, background 0.15s;
}

.app-nav .nav-right a:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

.app-nav .nav-logout form {
  margin: 0;
}

.app-nav .nav-logout button {
  cursor: pointer;
  border: none;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--color-dark);
  letter-spacing: -0.01em;
  box-shadow: 0 2px 10px rgba(255,107,53,0.4);
  transition: transform 0.15s, box-shadow 0.15s;
}

.app-nav .nav-logout button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,107,53,0.55);
}