/* Mobile hamburger menu */
@media (max-width: 900px) {
  body.nav-open {
    overflow: hidden;
  }
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    z-index: 100;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  body.nav-open .nav-links {
    pointer-events: auto;
    opacity: 1;
    visibility: visible;
  }
  .nav-links a {
    font-size: 1.25rem;
  }
  .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border-hover);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    z-index: 101;
    transition: border-color 0.2s;
  }
  .hamburger:hover {
    border-color: var(--accent);
  }
  .hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: currentColor;
    transition: transform 0.3s, opacity 0.3s;
  }
  .hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  .hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  .nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
}
@media (min-width: 901px) {
  .hamburger {
    display: none;
  }
}
.page-home .hamburger,
.page-uiux .hamburger {
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.3);
}
.page-home .hamburger:hover,
.page-uiux .hamburger:hover {
  border-color: var(--accent);
}
[data-theme="light"] .page-home .hamburger {
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.2);
}
[data-theme="light"] .page-home .hamburger:hover {
  border-color: var(--accent);
}