/* ===========================
   Header & Tagline (3D-Effekt)
   =========================== */
header {
  background: linear-gradient(135deg, rgba(20, 77, 59, 0.48) 60%, rgba(160, 59, 68, 0.48) 100%);
  box-shadow: 0 4px 16px rgba(160, 59, 68, 0.15);
  border-radius: 0 0 18px 18px;
  padding: 18px 24px 8px 24px;
  color: var(--foreground);
  font-family: var(--font-family);
}

.tagline p {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
  margin: 0 0 18px 0;
  text-align: center;
  letter-spacing: 0.03em;
  user-select: none;
  perspective: 600px;
  text-shadow:
    0 1px 0 #9ea9b3,
    0 2px 0 #8a95a3,
    0 3px 0 #76818f,
    0 4px 0 #636d7b,
    0 5px 0 #505967,
    0 6px 0 #3d4553,
    0 7px 0 #2a3240,
    0 8px 7px rgba(0,0,0,0.6);
  transition: transform 0.4s cubic-bezier(.4,0,.2,1);
}
.tagline p:hover {
  transform: rotateX(15deg) rotateY(10deg) translateZ(10px);
  text-shadow:
    0 2px 1px #dbe6f2,
    0 4px 2px #c9d9f0,
    0 6px 3px #b7cced,
    0 8px 4px #a5bff0,
    0 10px 5px #93b2f0,
    0 12px 6px #81a5f0,
    0 14px 7px #6f98f0,
    0 16px 14px rgba(0,0,0,0.8);
}

/* ===========================
   Hauptnavigation
   =========================== */
.main-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem 0;
}

.main-nav ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.main-nav li {
  position: relative;
}

.main-nav a,
.main-nav .dropdown-toggle {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: 
    background 0.2s cubic-bezier(.4,0,.2,1),
    color 0.2s cubic-bezier(.4,0,.2,1),
    box-shadow 0.2s cubic-bezier(.4,0,.2,1);
  outline: none;
}

.main-nav a[aria-current="page"],
.main-nav a.active,
.main-nav .dropdown-toggle[aria-expanded="true"] {
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--foreground);
  box-shadow: 0 2px 8px rgba(200, 214, 229, 0.15);
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav .dropdown-toggle:hover,
.main-nav .dropdown-toggle:focus-visible {
  background: color-mix(in srgb, var(--accent) 60%, transparent);
  color: var(--background);
  box-shadow: 0 4px 16px rgba(200, 214, 229, 0.18);
}

.main-nav .dropdown-toggle::after {
  content: " ▼";
  font-size: 0.8em;
  color: var(--accent);
  transition: transform 0.2s;
}
.main-nav .dropdown-toggle[aria-expanded="true"]::after {
  transform: rotate(-180deg);
}

/* Dropdown-Menüs */
.main-nav ul.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(20, 77, 59, 0.97);
  border-radius: 0 0 12px 12px;
  box-shadow: 0 2px 10px rgba(160, 59, 68, 0.18);
  padding: 10px 0;
  min-width: 220px;
  display: none;
  flex-direction: column;
  z-index: 1000;
  animation: fadeIn 0.2s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px);}
  to { opacity: 1; transform: translateY(0);}
}

.main-nav li:focus-within > ul.dropdown,
.main-nav li:hover > ul.dropdown,
.main-nav .dropdown-toggle[aria-expanded="true"] + ul.dropdown {
  display: flex;
}

.main-nav ul.dropdown li {
  margin: 0;
}

.main-nav ul.dropdown a {
  padding: 10px 18px;
  display: block;
  font-size: 1rem;
  color: var(--primary-light);
  border-radius: 6px;
  background: none;
  transition: background 0.2s, color 0.2s;
}

.main-nav ul.dropdown a:hover,
.main-nav ul.dropdown a:focus-visible {
  background: var(--accent);
  color: var(--background);
  outline: none;
}

/* Responsive Navigation */
@media (max-width: 900px) {
  .main-nav ul {
    flex-direction: column;
    gap: 0.7rem;
    align-items: stretch;
  }
  .main-nav ul.dropdown {
    position: static;
    min-width: 100%;
    box-shadow: none;
    border-radius: 0 0 12px 12px;
  }
  .main-nav a,
  .main-nav .dropdown-toggle {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 600px) {
  header {
    padding: 10px 6px 4px 6px;
  }
  .tagline p {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  .main-nav ul {
    gap: 0.3rem;
  }
  .main-nav a,
  .main-nav .dropdown-toggle {
    padding: 12px 8px;
    font-size: 1rem;
  }
  .main-nav ul.dropdown a {
    padding: 10px 8px;
    font-size: 0.95rem;
  }
}