*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #0066CC;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}
.card-hover {
  transition: all 0.3s ease;
}
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion-content.open {
  max-height: 480;
}
.fade-in {
  animation: fadeIn 0.6s ease forwards;
}
.bg-hero {
  background-image: url('../assets/img/mueller-sanitaer-remscheid-1.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.bg-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(248,249,250,0.99),
    rgba(255,255,255,0.55)
  );
}
.bg-privatkunden {
  background-image: url('../assets/img/mueller-sanitaer-remscheid-1.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.bg-gewerbekunden {
  background-image: url('../assets/img/mueller-sanitaer-remscheid-2.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.btn-primary {
  transition: all 0.2s ease;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,102,204,0.3);
}
@view-transition { navigation: auto; }