/* Mobile Kopfzeile von Kontakt und Impressum: identisch zur Startseite. */
@media (max-width: 600px) {
  .contact-header.contact-header {
    height: calc(64px + env(safe-area-inset-top));
    padding: env(safe-area-inset-top) 12px 0;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 8px;
    background: #050506f0;
    border-bottom-color: #ffffff1a;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }

  .contact-header .brand { width: clamp(100px, 31vw, 118px); }

  .contact-header .contact-menu {
    /* Nicht vom Grid beeinflussen lassen: genau in der Header-Mitte. */
    position: fixed;
    top: calc(env(safe-area-inset-top) + 32px);
    /* Exakte horizontale Mitte wie in der Startseiten-Kopfzeile. */
    left: 50vw;
    margin: 0;
    transform: translate(-50%, -50%);
  }

  .contact-header .contact-menu summary {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    min-width: 44px;
    min-height: 44px;
  }

  .contact-header .contact-menu summary b { gap: 5px; width: 22px; }
  .contact-header .contact-menu summary i { width: 22px; height: 1.5px; }
  .contact-header .contact-menu[open] summary i:first-child { transform: translateY(6.5px) rotate(45deg); }
  .contact-header .contact-menu[open] summary i:nth-child(2) { opacity: 0; }
  .contact-header .contact-menu[open] summary i:last-child { transform: translateY(-6.5px) rotate(-45deg); }

  .contact-header .header-cta.header-cta-mobile {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 2px;
    color: #f6f6ef;
    font-size: clamp(10px, 2.8vw, 12px);
    font-weight: 900;
    letter-spacing: .08em;
    text-shadow: 0 0 8px #c9d52d99, 0 0 20px #c9d52d55;
    white-space: nowrap;
  }

  .contact-header .header-cta.header-cta-mobile span {
    margin-left: 5px;
    color: var(--acid);
    font-size: 18px;
    text-shadow: 0 0 9px #c9d52d;
  }

  .contact-header .header-cta.header-cta-mobile::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 7px;
    left: 0;
    height: 1px;
    opacity: .9;
    background: linear-gradient(90deg, transparent, #c9d52d 28%, #e4ef49 72%, transparent);
    box-shadow: 0 0 9px #c9d52d, 0 0 20px #c9d52d88;
  }

  .contact-header .contact-menu nav {
    position: fixed;
    top: calc(72px + env(safe-area-inset-top));
    right: 12px;
    left: auto;
    width: min(340px, calc(100vw - 24px));
    transform: none;
  }
}