/**
 * @file menu.css
 * Header-Bar, Hamburger-Toggle, Off-Canvas-Drawer und Navigation.
 *
 * Mobile-first: Navigation steckt standardmäßig im Off-Canvas-Drawer und wird
 * per Hamburger geöffnet. Ab dem Breakpoint (>= 1024px) wird der Drawer zur
 * horizontalen Desktop-Navigation und der Hamburger ausgeblendet.
 */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: var(--header-height);
}

.site-branding {
  display: flex;
  align-items: center;
}

.site-branding img {
  max-height: calc(var(--header-height) - var(--space-sm));
  width: auto;
}

/* --- Hamburger-Toggle (nur mobil sichtbar) --- */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

.menu-toggle__icon,
.menu-toggle__icon::before,
.menu-toggle__icon::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.menu-toggle__icon {
  position: relative;
}

.menu-toggle__icon::before,
.menu-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle__icon::before { top: -7px; }
.menu-toggle__icon::after { top: 7px; }

/* Aktiver Zustand: Hamburger wird zum X. */
.site-header.is-menu-open .menu-toggle__icon {
  background: transparent;
}

.site-header.is-menu-open .menu-toggle__icon::before {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-menu-open .menu-toggle__icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Off-Canvas-Drawer --- */
.menu-drawer {
  position: fixed;
  inset: var(--header-height) 0 0 auto;
  width: min(85vw, 360px);
  z-index: var(--z-drawer);
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  padding: var(--space-md);
}

.site-header.is-menu-open .menu-drawer {
  transform: translateX(0);
}

/* Abdunkelnder Overlay-Hintergrund. */
.menu-drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.site-header.is-menu-open .menu-drawer-overlay {
  opacity: 1;
  visibility: visible;
}

/* --- Drawer-Inhalt: Region/Block-Wrapper neutralisieren --- */
/* Das in primary_menu/secondary_menu platzierte Menü ist verschachtelt:
   .menu-drawer > .region > .block > ul.menu. Diese Wrapper sollen im Drawer
   keine eigenen Abstände erzeugen. */
.menu-drawer .region,
.menu-drawer .block {
  margin: 0;
  padding: 0;
}

/* --- Navigationsliste --- */
.menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu__item {
  border-bottom: 1px solid var(--color-border);
}

.menu__link {
  display: block;
  padding: var(--space-xs) 0;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
}

.menu__link:hover,
.menu__link:focus,
.menu__link.is-active {
  color: var(--color-primary);
}

/* Untermenü mobil: eingerückt, einfache Liste. */
.menu .menu {
  padding-inline-start: var(--space-sm);
}

.menu .menu .menu__link {
  font-weight: 400;
}

/* ========================================================================
   Desktop ab 1024px: Drawer wird zur horizontalen Navigationsleiste.
   ======================================================================== */

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }

  .menu-drawer {
    position: static;
    width: auto;
    transform: none;
    box-shadow: none;
    border: 0;
    overflow: visible;
    padding: 0;
    background: transparent;
  }

  .menu-drawer-overlay {
    display: none;
  }

  /* Top-Level horizontal. Wrapper-robust: trifft die oberste Menü-Liste
     unabhängig von Region/Block-Wrappern – :not(.menu .menu) schließt
     verschachtelte Untermenüs aus. */
  .menu-drawer .menu:not(.menu .menu) {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
  }

  .menu-drawer .menu:not(.menu .menu) > .menu__item {
    border-bottom: 0;
    position: relative;
  }

  .menu-drawer .menu:not(.menu .menu) > .menu__item > .menu__link {
    padding: var(--space-2xs) 0;
  }

  /* Untermenü als Dropdown. */
  .menu-drawer .menu .menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 12rem;
    padding: var(--space-2xs) var(--space-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-sm);
    display: none;
  }

  .menu-drawer .menu__item:hover > .menu,
  .menu-drawer .menu__item:focus-within > .menu {
    display: block;
  }
}