/* ============================================================
   HEADER.CSS (MODERN & EINHEITLICH)
   ------------------------------------------------------------
   Einheitliche, hochwertige Steuerung für Desktop- und Mobile-Header.
   Mobile First, klare Typografie, ruhige Farben, saubere States.
============================================================ */

/* Basis: Typografie & Feinabstimmung
   ------------------------------------------------------------ */
:root {
  --header-height-mobile: 60px;
  --header-height-desktop: 64px;
  --header-container-max: 1200px;

  --header-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  --header-font-size: 14px;
  --header-font-size-desktop: 14px;

  --header-link-color: var(--text-secondary);
  --header-link-hover: var(--foreground);
  --header-link-active: var(--foreground);

  --header-border: var(--border-color);
  --header-blur: 20px;
}

/* Reduziert Flackern bei Sticky + Blur */
.site-header,
.mobile-header {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 1. Grund-Layout & Mobile-Header (Mobile First)
   ------------------------------------------------------------ */
.site-header {
  /* Diese Klasse wird jetzt nur noch für den Desktop-Header verwendet */
  display: none; /* Standardmäßig auf Desktop ausgeblendet */
}

.mobile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1rem;
  height: var(--header-height-mobile);
  background-color: var(--header-bg);
  background-color: color-mix(in srgb, var(--header-bg) 85%, transparent);
  backdrop-filter: blur(var(--header-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--header-blur)) saturate(180%);
  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 1px 0 rgba(0,0,0,0.02);
  position: sticky;
  top: 0;
  z-index: 999;
  font-family: var(--header-font);
  font-size: var(--header-font-size);
}

.header-left .site-logo {
  height: 36px;
  width: auto;
  display: block;
  image-rendering: auto;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.locale-switcher select {
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--background);
  color: var(--foreground);
  cursor: pointer;
  line-height: 1.2;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.locale-switcher select:focus-visible {
  border-color: #0071e3;
  box-shadow: 0 0 0 3px rgba(0,113,227,0.25);
}

/* 2. Desktop-Header & Navigation (ab 1025px)
   ------------------------------------------------------------ */
@media (min-width: 1025px) {
  /* Mobilen Header auf Desktop ausblenden */
  .mobile-header {
    display: none;
  }

  /* Desktop-Header einblenden und gestalten */
  .site-header {
    display: block;
    width: 100%;
    background: var(--header-bg);
    background-color: color-mix(in srgb, var(--header-bg) 85%, transparent);
    backdrop-filter: blur(var(--header-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--header-blur)) saturate(180%);
    border-bottom: 1px solid var(--header-border);
    position: sticky;
    top: 0;
    z-index: 100;
    font-family: var(--header-font);
    font-size: var(--header-font-size-desktop);
  }

  .header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--header-container-max);
    margin: 0 auto;
    padding: 0 2rem;
    height: 64px;
    gap: 1.75rem;
  }

  /* Flexbox-Layout für perfekte Zentrierung */
  .header-left {
    flex: 1;
    display: flex;
    justify-content: flex-start;
  }

  .desktop-nav {
    flex: 0 1 auto; /* Nimmt nur den Platz, den es braucht */
    display: flex;
    justify-content: center;
  }
  
  .header-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
  }

  /* Desktop-Navigationsliste */
  .desktop-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2.25rem;
  }

  .desktop-menu-item a {
    position: relative;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--header-link-color);
    text-decoration: none;
    padding: 0.5rem 0;
    transition: color 0.15s ease;
  }

  .desktop-menu-item a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0.2rem;
    width: 100%;
    height: 1px;
    background: currentColor;
    opacity: 0;
    transform: scaleX(0.92);
    transform-origin: center;
    transition: opacity 0.15s ease, transform 0.15s ease;
  }

  .desktop-menu-item a:hover {
    color: var(--header-link-hover);
  }

  .desktop-menu-item a:hover::after {
    opacity: 0.55;
    transform: scaleX(1);
  }

  .desktop-menu-item a:focus-visible {
    outline: 2px solid #0071e3;
    outline-offset: 3px;
    border-radius: 8px;
  }

  /* Aktiver Link */
  .desktop-menu-item a[aria-current="page"] {
    color: var(--header-link-active);
    font-weight: 600;
  }

  .desktop-menu-item a[aria-current="page"]::after {
    opacity: 0.85;
    transform: scaleX(1);
  }
}


/* 3. Mobile Navigations-Panel (Das eigentliche Menü, das ausfährt)
   ------------------------------------------------------------ */
#mobile-menu-state {
  display: none; /* Checkbox bleibt versteckt */
}

.mobile-nav-trigger {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001; /* Über dem Header */
  border-radius: 10px;
}

.mobile-nav-trigger:focus-visible {
  outline: 2px solid #0071e3;
  outline-offset: 3px;
  border-radius: 10px;
}

.mobile-nav-trigger span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--foreground);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger-Icon zu "X" umwandeln */
#mobile-menu-state:checked + .mobile-menu + .mobile-header .mobile-nav-trigger span:nth-of-type(1) {
  transform: translateY(7px) rotate(45deg);
}
#mobile-menu-state:checked + .mobile-menu + .mobile-header .mobile-nav-trigger span:nth-of-type(2) {
  opacity: 0;
}
#mobile-menu-state:checked + .mobile-menu + .mobile-header .mobile-nav-trigger span:nth-of-type(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Das Menü selbst */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: color-mix(in srgb, var(--background) 92%, transparent);
  backdrop-filter: blur(var(--header-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--header-blur)) saturate(180%);
  z-index: 998;
  transform: translateX(-100%);
  transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1);
  padding: calc(var(--header-height-mobile) + 20px) 2rem 2rem;
  overflow-y: auto;
}

#mobile-menu-state:checked ~ .mobile-menu {
  transform: translateX(0);
}

.mobile-menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.mobile-menu-item a {
  display: block;
  padding: 0.9rem 0;
  font-size: 1.375rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--foreground);
  text-decoration: none;
  transition: color 0.15s ease;
}

.mobile-menu-item a:hover {
  color: var(--accent);
}

.mobile-menu-item a:focus-visible {
  outline: 2px solid #0071e3;
  outline-offset: 4px;
  border-radius: 10px;
}

/* Das Overlay wird nicht mehr benötigt, das Menü liegt jetzt über allem */
.mobile-overlay {
    display: none;
}