.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1002;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active .hamburger-line:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger.active .hamburger-line:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1001;
}

.mobile-nav-overlay.active { display: block; }

@media (max-width: 768px) {
  .hamburger { display: block; }

  nav {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: var(--mobile-nav-bg, var(--bg-secondary, #0d0d0d));
    flex-direction: column;
    padding: 4rem 1.5rem 1.5rem;
    gap: 1.5rem;
    transition: right 0.3s ease;
    z-index: 1002;
    overflow-y: auto;
  }

  nav.active { right: 0; }
  nav a { font-size: 1.1rem; color: #fff; }
  .cta-btn { text-align: center; }
}