/* ========== MOBILE NAVBAR (Handyansicht) – nur <768px, Desktop unberührt ========== */
@media (max-width: 767px) {
  /* Scroll-Lock: Hintergrund scrollt nicht wenn Menü offen */
  body.menu-open {
    overflow: hidden !important;
    position: fixed !important;
    width: 100%;
    height: 100%;
  }

  /* Wenn Menü offen: Header (inkl. Overlay) über gesamten Content */
  body.menu-open .header {
    z-index: 99999 !important;
    position: relative;
  }

  .header {
    padding-top: env(safe-area-inset-top, 0);
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    overflow: visible;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    min-height: 56px;
    padding: 0 16px;
    gap: 12px;
  }

  .header-inner .logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: #111;
    text-decoration: none;
    min-width: 0;
  }

  .header-inner .logo .logo-icon {
    font-size: 1.1rem;
  }

  .header-inner .nav-desktop {
    display: none !important;
  }

  /* Menü-Container: echtes Fullscreen-Overlay, sehr hoher z-index */
  .header-inner .nav {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100vh !important;
    min-height: 100vh;
    z-index: 9999 !important;
    pointer-events: none;
    visibility: hidden;
    isolation: isolate;
  }

  .header-inner .nav.is-open {
    pointer-events: auto;
    visibility: visible;
  }

  .header-inner .nav-backdrop,
  .header-inner .nav-panel {
    display: block;
  }

  /* Backdrop: abdunkeln + Blur, über allem */
  .nav-backdrop {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100vh !important;
    z-index: 9999 !important;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    pointer-events: none;
  }

  .nav.is-open .nav-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  /* Panel: Slide-in von rechts, über dem Backdrop */
  .nav-panel {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    left: auto !important;
    height: 100vh !important;
    z-index: 10000 !important;
    width: 280px;
    max-width: 85vw;
    background: #fff;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    transition: transform 0.25s ease-out;
    padding-top: env(safe-area-inset-top, 0);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .nav.is-open .nav-panel {
    transform: translateX(0);
  }

  .nav-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    padding: 16px 20px;
    border-bottom: 1px solid #f3f4f6;
  }

  .nav-panel-logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
  }

  .nav-panel-logo .logo-icon {
    font-size: 1rem;
  }

  .nav-close {
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    transition: background 0.15s, color 0.15s;
    -webkit-tap-highlight-color: transparent;
    position: relative;
  }

  .nav-close:hover,
  .nav-close:active {
    background: #f3f4f6;
    color: #111;
  }

  .nav-close span {
    position: absolute;
    width: 16px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
  }

  .nav-close span:first-child {
    transform: rotate(45deg);
  }

  .nav-close span:last-child {
    transform: rotate(-45deg);
  }

  .nav-panel-links {
    flex: 1;
    padding: 12px 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-height: 0;
  }

  .nav-panel-links a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #374151 !important;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.15s, color 0.15s;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-panel-links a:hover,
  .nav-panel-links a:active {
    background: #f9fafb;
    color: #111 !important;
  }

  .nav-panel-links a.active {
    color: #2563eb !important;
    font-weight: 600;
    background: #eff6ff;
  }

  .nav-panel-cta {
    flex-shrink: 0;
    padding: 16px 20px;
  }

  .nav-panel-cta .btn {
    display: block;
    width: 100%;
    padding: 12px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    border-radius: 8px;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-panel-footer {
    flex-shrink: 0;
    padding: 16px 20px;
    border-top: 1px solid #f3f4f6;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
  }

  .nav-panel-footer a {
    font-size: 0.8125rem;
    color: #6b7280;
    text-decoration: none;
  }

  .nav-panel-footer a:hover {
    color: #374151;
  }

  .nav-toggle {
    display: flex;
    flex-shrink: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-toggle:hover,
  .nav-toggle:active {
    background: #f3f4f6;
  }

  .nav-toggle:focus {
    outline: none;
  }

  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: #374151;
    border-radius: 1px;
    transition: transform 0.2s ease, opacity 0.2s ease;
    transform-origin: center;
  }

  .nav.is-open + .nav-toggle span:first-child {
    transform: translateY(7px) rotate(45deg);
  }

  .nav.is-open + .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav.is-open + .nav-toggle span:last-child {
    transform: translateY(-7px) rotate(-45deg);
  }
}