/* nav.css — Navigation: fixed, transparent/solid, Hamburger Mobile */

/* ============================================================
   NAV GRUNDSTRUKTUR
   ============================================================ */

#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.15rem var(--space-m) 0.3rem calc(var(--space-m) + 0.5rem);
  background-color: transparent;
  transition: background-color 0.5s var(--ease-smooth),
              padding 0.4s var(--ease-smooth);
}

/* Solid — ab hellen Sektionen (Klasse per JS gesetzt) */
#main-nav.nav-solid {
  background-color: var(--cream);
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
}

#main-nav.nav-solid #nav-logo {
  visibility: visible;
  height: 52px;
}

/* ============================================================
   LOGO
   ============================================================ */

#nav-logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

#nav-logo {
  height: 100px;
  width: auto;
  display: block;
  visibility: hidden;
}

/* ============================================================
   NAV LINKS — hell auf dunklem Hintergrund
   ============================================================ */

#nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}

#nav-links a {
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-light);
  opacity: 0.55;
  transition: opacity 0.25s var(--ease-smooth);
}

#nav-links a:hover {
  opacity: 1;
}

/* Wenn Nav solid ist (heller BG) → dunkle Textfarbe */
#main-nav.nav-solid #nav-links a {
  color: var(--dark);
}

/* ============================================================
   SPRACH-TOGGLE
   ============================================================ */

#lang-toggle {
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-light);
  opacity: 0.55;
  padding: 0.3em 0.6em;
  border: 1px solid currentColor;
  transition: opacity 0.25s var(--ease-smooth),
              color 0.5s var(--ease-smooth);
}

#lang-toggle:hover {
  opacity: 1;
}

#main-nav.nav-solid #lang-toggle {
  color: var(--dark);
}

/* ============================================================
   HAMBURGER — Mobile
   ============================================================ */

#nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  position: relative;
  z-index: 110; /* über dem geöffneten Menü-Panel (z-index 99), damit das X klickbar bleibt */
}

#nav-hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--text-light);
  transition: transform 0.35s var(--ease-smooth),
              opacity 0.25s var(--ease-smooth),
              background-color 0.5s var(--ease-smooth);
}

#main-nav.nav-solid #nav-hamburger span {
  background-color: var(--dark);
}

/* Hamburger offen */
#nav-hamburger.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
#nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
}
#nav-hamburger.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ============================================================
   MOBILE MENÜ
   ============================================================ */

@media (max-width: 768px) {
  #nav-hamburger {
    display: flex;
  }

  #nav-links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(320px, 85vw);
    background-color: var(--dark-bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-m);
    padding: var(--space-xl) var(--space-l);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease-smooth);
    z-index: 99;
  }

  #nav-links.is-open {
    transform: translateX(0);
  }

  #nav-links a {
    font-size: 0.85rem;
    color: var(--text-light);
    opacity: 0.7;
  }

  #nav-links a:hover {
    opacity: 1;
  }
}