* {
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  margin: 0;
  background: #f5f6f8;
}


header {
  height: 48px; 
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  backdrop-filter: blur(6px);
  background: rgba(0,0,0,0.35);

  /* NEU – hochwertiger Shadow */
  box-shadow: 0 4px 12px rgba(0,0,0,0.35);
}

.logo {
  font-weight: bold;
}

nav button {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  padding: 8px 12px;
}

nav button:hover {
  background: rgba(255,255,255,0.15);
  border-radius: 6px;
}

main { 
  background: transparent; /* NEU */
}



iframe {
  border: none;
  display: block;
  width: 100%;
  height: calc(100vh - 48px); /* exakt der Bereich unter dem Header */
}


nav button.active {
  background: rgba(255,255,255,0.35);
  border-radius: 6px;
}

#service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.service-card {
  background: white;
  padding: 20px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}