/* Mobile navigation motion — isolated from the desktop header and hero effects. */
@media (max-width: 1100px) {
  .site-header .menu-button {
    position: relative;
    z-index: 2;
    display: grid;
    place-items: center;
    overflow: hidden;
    transition:
      background-color .28s ease,
      border-color .28s ease,
      box-shadow .28s ease;
  }

  .site-header .menu-button::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(89, 160, 255, .22), transparent 68%);
    opacity: 0;
    transform: scale(.7);
    transition:
      opacity .32s ease,
      transform .42s cubic-bezier(.22, 1, .36, 1);
  }

  .site-header .menu-button:hover,
  .site-header .menu-button:focus-visible,
  .site-header.open .menu-button {
    border-color: rgba(126, 184, 255, .58);
    background-color: #1a2b49;
    box-shadow: 0 0 0 4px rgba(72, 133, 226, .08);
  }

  .site-header.open .menu-button::before {
    opacity: 1;
    transform: scale(1);
  }

  .site-header .menu-button span {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    display: block;
    width: 1.625rem;
    height: 2px;
    margin: 0;
    border-radius: 999px;
    background: #f4f8ff;
    transform-origin: center;
    transition:
      transform .46s cubic-bezier(.22, 1, .36, 1),
      background-color .25s ease;
  }

  .site-header .menu-button span:first-child {
    transform: translate(-50%, -6px);
  }

  .site-header .menu-button span:last-child {
    transform: translate(-50%, 6px);
  }

  .site-header.open .menu-button span:first-child {
    transform: translate(-50%, -1px) rotate(45deg);
  }

  .site-header.open .menu-button span:last-child {
    transform: translate(-50%, -1px) rotate(-45deg);
  }

  .site-header nav,
  .site-header.open nav {
    position: absolute;
    top: calc(100% + .75rem);
    right: 0;
    left: 0;
    z-index: 1;
    display: flex;
    align-items: stretch;
    flex-direction: column;
    gap: .5rem;
    max-height: calc(100dvh - 10rem);
    padding: 1rem;
    overflow-x: hidden;
    overflow-y: auto;
    border: 1px solid rgba(131, 180, 255, .22);
    border-radius: 1rem;
    background: rgba(8, 15, 32, .97);
    box-shadow: 0 24px 65px rgba(0, 0, 0, .58), inset 0 1px 0 rgba(255, 255, 255, .035);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    clip-path: inset(0 0 100% 0 round 1rem);
    transform: translateY(-12px) scale(.985);
    transform-origin: top center;
    transition:
      clip-path .5s cubic-bezier(.22, 1, .36, 1),
      transform .42s cubic-bezier(.22, 1, .36, 1),
      opacity .28s ease,
      visibility 0s linear .5s;
  }

  .site-header.open nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    clip-path: inset(0 0 0 0 round 1rem);
    transform: translateY(0) scale(1);
    transition-delay: 0s;
  }

  .site-header nav a,
  .site-header.open nav a {
    font-size: 1.25rem;
    padding: 1rem 1.25rem;
    white-space: normal;
    opacity: 0;
    transform: translateY(-9px);
    transition:
      color .2s ease,
      background-color .2s ease,
      opacity .3s ease,
      transform .42s cubic-bezier(.22, 1, .36, 1);
  }

  .site-header.open nav a {
    opacity: 1;
    transform: translateY(0);
  }

  .site-header.open nav a:nth-child(1) { transition-delay: .07s; }
  .site-header.open nav a:nth-child(2) { transition-delay: .11s; }
  .site-header.open nav a:nth-child(3) { transition-delay: .15s; }
  .site-header.open nav a:nth-child(4) { transition-delay: .19s; }

  .site-header nav .mobile-contact,
  .site-header.open nav .mobile-contact {
    display: block;
    background: #235ac2;
    color: #fff;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .menu-button,
  .site-header .menu-button::before,
  .site-header .menu-button span,
  .site-header nav,
  .site-header nav a {
    transition: none !important;
  }
}