/* Seitenrahmen: schwebender Header, Mobil-Menü (Dialog), Footer. Auf allen Seiten geladen (PROJ-2).
   Umschaltung Desktop/Mobil bei 1024 px (min-width). Nur Tokens aus tokens.css. */

/* ───────── Seitenanfang unter dem fixierten Header ─────────
   Jede Seite beginnt unterhalb des schwebenden Headers. Seiten mit Vollbild-Hero (PROJ-4) setzen <main class="main--flush">,
   Seiten mit eigenem Versatz (404) überschreiben padding-top in ihrer Seiten-CSS.
   Hinweis: <main> nicht zusätzlich mit .section versehen – .section würde diesen Versatz überschreiben. */
main { padding-top: calc(var(--header-top) + var(--header-h)); }
main.main--flush { padding-top: 0; }

/* ───────── Header ───────── */
.site-header {
  position: fixed; top: var(--header-top); left: 0; right: 0; z-index: 50;
  padding-inline: var(--container-pad); pointer-events: none;
}
.site-header__bar {
  pointer-events: auto; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6);
  max-width: var(--container-max); height: var(--header-h); margin-inline: auto; padding: 0 var(--space-2) 0 var(--space-5);
  border: 1px solid var(--border-glass); border-radius: var(--radius-pill);
  background: var(--surface-header); box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(140%); backdrop-filter: blur(var(--blur-glass)) saturate(140%);
  transition: background var(--dur-slow) var(--ease-out), box-shadow var(--dur-slow) var(--ease-out);
}
.site-header.is-scrolled .site-header__bar { background: var(--surface-header-solid); box-shadow: var(--shadow-md); }
.site-header__logo { display: inline-flex; flex: none; border-radius: var(--radius-sm); }
.site-header__logo img { height: 40px; width: auto; }

/* Hauptmenü (Desktop) */
.site-nav { display: none; }
.site-nav__list { display: flex; align-items: center; gap: var(--space-8); }
.site-nav__link {
  position: relative; display: inline-block; padding-block: var(--space-2);
  color: var(--text-strong); font-size: 14.5px; font-weight: var(--fw-medium); white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out);
}
.site-nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.site-nav__link:hover { color: var(--accent-text-hover); }
.site-nav__link[aria-current="page"] { color: var(--accent-text); }
.site-nav__link[aria-current="page"]::after, .site-nav__link:hover::after { transform: scaleX(1); }
.site-header__cta { display: none; flex: none; }
.site-header__toggle { --icon-btn-size: 46px; }

@media (min-width: 1024px) {
  .site-nav { display: block; margin-inline: auto; }
  .site-header__cta { display: inline-flex; }
  .site-header__toggle { display: none; }
  .mobile-menu { display: none !important; }
}

/* ───────── Mobil-Menü (natives <dialog>, Vollbild) ───────── */
html.is-menu-open { overflow: hidden; }
.mobile-menu {
  position: fixed; inset: 0; width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 0;
  border: 0; background: var(--bg-page); color: var(--text-body); overflow-y: auto; overscroll-behavior: contain;
}
.mobile-menu[open] { animation: menu-in var(--dur-slow) var(--ease-out); }
.mobile-menu::backdrop { background: transparent; }
.mobile-menu::before {
  content: ""; position: absolute; top: -12%; right: -30%; width: 90vw; aspect-ratio: 1; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, var(--ember-300), transparent 62%); opacity: .5;
}
.mobile-menu__inner {
  position: relative; display: flex; flex-direction: column; gap: var(--space-8); min-height: 100%;
  padding: var(--header-top) var(--container-pad) var(--space-8);
}
.mobile-menu__top { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); padding-left: var(--space-2); }
.mobile-menu__nav { flex: 1; }
.mobile-menu__link {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-default);
  color: var(--text-strong); font-size: clamp(1.75rem, 1.2rem + 3vw, 2.25rem); font-weight: var(--fw-medium); letter-spacing: var(--ls-heading); line-height: 1.15;
}
.mobile-menu__link .icon { font-size: 22px; color: var(--accent-text); }
.mobile-menu__link:hover { color: var(--accent-text-hover); }
.mobile-menu__link[aria-current="page"] { color: var(--accent-text); }
.mobile-menu__bottom { display: grid; gap: var(--space-6); }
.mobile-menu__contact { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); }
.mobile-menu__contact a { display: inline-flex; align-items: center; gap: var(--space-2); padding-block: var(--space-2); color: var(--text-strong); font-weight: var(--fw-medium); }
.mobile-menu__contact a:hover { color: var(--accent-text-hover); }
.mobile-menu__contact .icon { font-size: 18px; color: var(--accent-text); }
@keyframes menu-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ───────── Footer ───────── */
.site-footer {
  margin-top: var(--space-5); padding-block: var(--space-16) var(--space-8);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  background: var(--navy-900); color: var(--text-on-inverse-muted); font-size: var(--fs-small);
}
.site-footer__grid { display: grid; gap: var(--space-10); }
.site-footer__logo { display: inline-flex; padding: var(--space-2) var(--space-4); border-radius: var(--radius-md); background: var(--cream-0); }
.site-footer__logo img { height: 38px; width: auto; }
.site-footer__brand p { max-width: 280px; margin-top: var(--space-4); }
.site-footer__title { margin-bottom: var(--space-4); color: var(--cream-0); font-size: var(--fs-small); font-weight: var(--fw-semibold); letter-spacing: 0; }
.site-footer__col ul { display: grid; gap: var(--space-1); }
.site-footer a { color: var(--text-on-inverse-muted); }
.site-footer a:hover, .site-footer a[aria-current="page"] { color: var(--ember-300); }
.site-footer__col a { display: inline-flex; align-items: center; gap: var(--space-2); padding-block: var(--space-1); }
.site-footer__col .icon { font-size: 16px; color: var(--ember-300); }
.site-footer :focus-visible { outline-color: var(--ember-300); }
.site-footer__bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3) var(--space-6);
  margin-top: var(--space-12); padding-top: var(--space-5); border-top: 1px solid var(--border-on-inverse-strong); font-size: 13px;
}
.site-footer__bottom ul { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); }
.site-footer__bottom a { display: inline-block; padding-block: var(--space-1); }

@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr) minmax(0, 1fr); gap: var(--space-10); }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__bar, .site-nav__link, .site-nav__link::after { transition: none; }
  .mobile-menu[open] { animation: none; }
}