header{
  padding: 100px 25px;

  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 50px;
}
.header_text{
  width: 850px;
}
nav{
  margin-bottom: 120px;
}
nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}
nav a{
  color: var(--text-color);
  text-decoration: none;
  position: relative;
  padding: 3px;
}
nav a:hover{
  color: var(--text-color);
}
nav a::after{
  content: '';
  height: 3px;
  width: 0%;
  background: var(--text-color);
  position: absolute;
  bottom: 0;
  left: 0;
  transition: 150ms ease-in-out;
} 
nav a:hover::after{
  width: 100%;
}
.subheading{
  margin-top: 25px;
  color: var(--text-color);
  text-align: justify;
}
.circle{
  height: 500px;
  width: 500px;

  max-height: 80vw;
  max-width: 80vw;

  overflow: hidden;
  border-radius: 50%;
  border: 5px solid var(--text-color);

  display: flex;
  justify-content: center;
  align-items: center;
}
.circle img{
  width: 100%;
}
#toggle_button{
  display: none;
}
label[for="toggle_button"]{
  display: none;
}
label[for="toggle_button"] span{
  font-size: 50px;
}
@media(max-width: 800px){
  nav{
      position: fixed;
      top: 0;
      right: 0;
      background: var(--secondary-color);
      padding: 40px;
      border-radius: 0 0 0 25px;
  }
  nav ul{
      display: none;
      flex-direction: column;
      margin-top: 50px;
      font-size: 25px
  }
  label[for="toggle_button"]{
      display: block;
      position: fixed; /* Fixiert den Toggle-Button */
      top: 15px; /* Beibehaltung der Position */
      right: 15px; /* Rechts fixiert */
      z-index: 1000;
  }
  #toggle_button:checked ~ ul{
      display: flex;
  }
}