/* =========================
   Header Grundwerte
========================= */
:root {
  --header-height: 60px;   /* Standardhöhe Header */
  --headwidth: 1200px;     /* Standard-Breakpoint für Burger-Menü */

  --menu-width: 170px;     /* Hauptmenü-Breite im Burger */
  --menu-clear: 0.9;      /* Transparenz */

  --submenu-left: 120px;   /* Submenu-Abstand vom linken Rand */
  --submenu-width: 180px;  /* Submenü-Breite */
  --submenu-clear: 0.9;   /* Transparenz */

  /* Overlay-Gradient-Variablen für Burger-Menü */
  --color-header-burgerleft-rgb: 68, 68, 68;     /* Beispiel: Grau links */
  --color-header-burgerright-rgb: 187, 187, 187; /* Beispiel: Grau rechts */
  --burger-alpha: 0.8;                           /* 80% Deckkraft */
}

/* Sprachabhängige Überschreibungen für Breakpoints */
  html[lang="de"] { --headwidth: 1050px; }
  html[lang="fr"] { --headwidth: 1100px; }
  html[lang="it"] { --headwidth: 1050px; }
  html[lang="en"] { --headwidth: 1050px; }
  html[lang="nl"] { --headwidth: 1050px; }
  html[lang="se"] { --headwidth: 1050px; }
  html[lang="dk"] { --headwidth: 1050px; }

@media (max-width: var(--headwidth)) {
  :root {
    --header-height: 80px; /* höhere Headerhöhe im Handy-Modus */
  }
}

/* =========================
   Header Container
========================= */
.site-header {
  position: fixed;          
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: linear-gradient(
    to right,
    var(--color-header-left),
    var(--color-header-right)
  );
  color: var(--color-headertext);
  display: flex;
  justify-content: space-between; 
  align-items: center;
  padding: 0.1rem 0.1rem;   
  box-sizing: border-box;
  z-index: 10000;           
  isolation: isolate;       
}

/* =========================
   Logo
========================= */
.site-header .logo img {
  height: 35px;
  position: relative;
  top: 5px;                 
  margin: 4px 20px 0 20px;  /* oben/rechts/unten/links */
}

/* =========================
   Navigation Desktop
========================= */
.main-nav {
  position: static;
  height: auto;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;            
  gap: 0.2rem;                
}

.site-header .main-nav a {
  color: var(--color-headertext);
  text-decoration: none;
  padding: 0.2rem 0.4rem;     
  font-weight: bold;
  white-space: nowrap;
}

.site-header .main-nav a:hover {
  text-decoration: underline;
}

/* =========================
   Dropdown-Untermenüs Desktop
========================= */
.main-nav ul li {
  position: relative; /* wichtig für absolute Untermenüs */
}

.main-nav ul li ul {
  display: none; /* standardmäßig ausgeblendet */
  position: absolute;
  top: 100%; /* direkt unter dem Hauptpunkt */
  left: 0;
  background: rgba(var(--color-header-burgerright-rgb), 0.9);
  padding: 0.5rem 0;
  list-style: none;
  min-width: 150px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  z-index: 9999;
}

.main-nav ul li ul li {
  display: block;
}

.main-nav ul li ul a {
  display: block;
  padding: 0.4rem 0.8rem;
  font-weight: normal;
  color: var(--color-headertext);
}

.main-nav ul li ul a:hover {
  background: rgba(var(--color-header-burgerright-rgb), 0.9);
  text-decoration: none;
}

/* Hover-Logik für Desktop */
.main-nav ul li:hover > ul {
  display: block;
}

/* =========================
   Sprach- und Farb-Selector
========================= */
.selectors {
  display: flex;
  gap: 10px;        
  margin-left: auto; 
  margin-right: 10px;
}

.lang-selector select,
.theme-selector select {
  font-size: 1rem;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
}

.lang-selector select:focus,
.theme-selector select:focus {
  outline: 2px solid #000;
  outline-offset: 2px;
}

/* =========================
   Abstand für Seiteninhalt
========================= */
body {
  padding-top: var(--header-height);
}

/* =========================
   Burger-Button
========================= */
.burger {
  display: none;             
  font-size: 1.5rem;
  background: none;
  border: none;
  color: var(--color-headertext);
  cursor: pointer;
  margin-right: 1rem;
}

/* =========================
   Dynamische Umbruch-Ansicht
========================= */
.site-header.nav-collapsed .burger { display: block; }
.site-header.nav-collapsed .main-nav { display: none; }

.site-header.nav-collapsed .main-nav.open {
  display: block;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--menu-width);
  height: calc(100% - var(--header-height));
  background: linear-gradient(
    to right,
    rgba(var(--color-header-burgerleft-rgb), var(--menu-clear)),
    rgba(var(--color-header-burgerright-rgb), var(--menu-clear))
  );
  padding: 1rem;
  box-sizing: border-box;
  overflow-y: auto;
  z-index: 9999;
}

.site-header.nav-collapsed .main-nav.open ul {
  flex-direction: column;
  gap: 0.8rem;
}

.site-header.nav-collapsed .main-nav.open a {
  display: block;
  padding: 0.5rem;
}

/* =========================
   Statisches Burger-Menü (keine Overlays, keine Klick-Logik)
   - Hauptliste vertikal
   - Submenüs bei Maus-over (Desktop)
   - Submenüs standardmäßig sichtbar (Touch)
========================= */
@media (max-width: 1100px) {
  .site-header.nav-collapsed .main-nav.open {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--menu-width);
    height: calc(100% - var(--header-height));
    background: linear-gradient(
      to right,
      rgba(var(--color-header-burgerleft-rgb), var(--menu-clear)),
      rgba(var(--color-header-burgerright-rgb), var(--menu-clear))
    );
    padding: 1rem;
    box-sizing: border-box;
    overflow: visible;     /* statt overflow-y: auto */
    z-index: 9999;
  }

  .site-header.nav-collapsed .main-nav.open > ul {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin: 0;
    padding: 0;
    list-style: none;
    position: relative;
    width: 100%;
  }

  /* Submenüs im Burger */
  .site-header.nav-collapsed .main-nav.open ul li {
    position: relative;
  }

  .site-header.nav-collapsed .main-nav.open ul li > ul {
    display: none; /* Standard: aus, wird gleich gesteuert */
    position: absolute;
    top: 0;
    left: var(--submenu-left);
    width: var(--submenu-width);
    background: rgba(var(--color-header-burgerright-rgb), var(--submenu-clear));
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    padding: 0.5rem 0;
    z-index: 20000;
  }

  /* Desktop: sichtbar bei Hover/Fokus */
  @media (hover: hover) {
    .site-header.nav-collapsed .main-nav.open ul li:hover > ul,
    .site-header.nav-collapsed .main-nav.open ul li:focus-within > ul {
      display: block;
    }
  }

  /* Touch-Geräte: Submenüs standardmäßig sichtbar */
  @media (hover: none) {
    .site-header.nav-collapsed .main-nav.open ul li > ul {
      display: block;
    }
  }

  .site-header.nav-collapsed .main-nav.open ul li ul li a {
    display: block;
    padding: 0.3rem 0.5rem;
    font-weight: normal;
    white-space: nowrap;
  }
}