/* Phone menu (hamburger). Loaded after the main stylesheet. */
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.nav-burger { display: none; }

@media (max-width: 820px) {
  .site-header { gap: 12px; }
  .nav-burger {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 44px; height: 44px; padding: 0 11px; cursor: pointer; flex: none;
  }
  .nav-burger span {
    display: block; height: 2px; background: var(--navy, #122039);
    transition: transform .2s, opacity .2s;
  }
  .nav-toggle:focus-visible ~ .nav-burger { outline: 2px solid var(--blue, #0a64c8); outline-offset: 2px; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .site-header nav { display: none !important; }
  .nav-toggle:checked ~ nav {
    display: flex !important; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0; z-index: 20;
    background: #fff; border-top: 1px solid #dfe3e5; box-shadow: 0 16px 30px #071b3a1f;
  }
  .nav-toggle:checked ~ nav a {
    display: block !important; padding: 16px 5vw !important; font-size: 16px !important;
    border-bottom: 1px solid #eef1f3;
  }
}