/* alpatecs – Mobile-Navigation: Vollbild-Menü unter 981px.
   Greift nur, wenn nav.js geladen ist (Klasse .has-mobile-nav); ohne JavaScript bleibt die Leiste aus style.css. */

.nav-toggle { display: none; }

@media (max-width: 980px) {
  .site-header.has-mobile-nav {
    position: sticky;
    top: 0;
    padding-top: env(safe-area-inset-top, 0px);
    z-index: 30;
    transition: transform .25s ease;
  }
  .site-header.has-mobile-nav.is-hidden { transform: translateY(-100%); }
  .has-mobile-nav .site-header__inner { flex-wrap: nowrap; gap: 10px; }
  .has-mobile-nav .brand { margin-right: auto; min-width: 0; }
  .has-mobile-nav .nav { display: none; }
  .has-mobile-nav .header-actions { flex-wrap: nowrap; }
  .has-mobile-nav .header-actions .btn:not(.btn--solid) { display: none; }

  .nav-toggle {
    display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 6px;
    width: 44px; height: 44px; flex: 0 0 44px; padding: 0;
    background: transparent; border: 1.5px solid var(--fg); color: var(--fg); cursor: pointer;
  }
  .nav-toggle__bar { display: block; width: 18px; height: 2px; background: currentColor; transition: transform .2s ease; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav-toggle:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

  .mnav {
    position: fixed; left: 0; right: 0; bottom: 0; top: var(--mnav-top, 72px);
    z-index: 29; background: var(--bg); overflow-y: auto; overscroll-behavior: contain;
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .mnav[hidden] { display: none !important; }
  .mnav__inner { display: flex; flex-direction: column; gap: 28px; padding-block: 12px 32px; min-height: 100%; }

  .mnav__links { display: flex; flex-direction: column; }
  .mnav__link {
    display: flex; align-items: baseline; gap: 14px; padding-block: 14px;
    border-bottom: 1px solid var(--line); color: var(--fg); text-decoration: none;
    font-family: var(--font-display); font-weight: 600; font-size: clamp(26px, 7.5vw, 34px); line-height: 1.1; letter-spacing: -0.015em;
    opacity: 0; transform: translateY(8px);
    animation: mnav-in .35s ease forwards; animation-delay: calc(var(--i, 0) * 45ms);
  }
  .mnav__link[aria-current="page"], .mnav__link:hover { color: var(--accent); }
  .mnav__num { font-family: var(--font-mono); font-size: 12px; font-weight: 400; letter-spacing: .08em; color: var(--muted); min-width: 22px; }

  .mnav__actions { display: flex; flex-direction: column; gap: 10px; }
  .mnav__actions .btn { width: 100%; }
  .mnav__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }

  .mnav__contact { display: flex; flex-direction: column; gap: 6px; margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); }
  .mnav__label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; color: var(--muted); }
  .mnav__contact a { color: var(--fg); text-decoration: none; font-size: 18px; font-weight: 500; }

  html.mnav-open, html.mnav-open body { overflow: hidden; }
}

@keyframes mnav-in { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .mnav__link { animation: none; opacity: 1; transform: none; }
  .site-header.has-mobile-nav { transition: none; }
}