/**
 * HEADER.CSS
 * Navigation und Header-Styles
 */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header.scrolled {
  background: rgba(240, 248, 255, 0.90);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.nav-logo .logo {
  height: 2rem;
  width: auto;
}

.nav-menu {
  display: none;
  gap: 2rem;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-navy);
  transition: color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-actions {
  display: none;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 768px) {
  .nav-actions {
    display: flex;
  }
}



/* Hamburger Menu */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--color-navy);
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.nav-menu.mobile {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem;
  gap: 1rem;
  box-shadow: var(--shadow-md);
  animation: slideDown 0.3s ease-out;
}

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