header {
  width: 100%;
  
  display: flex;
  flex-wrap: wrap;
  margin: 0 auto;
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header_wrap {
  max-width: var(--page-max-width);
  min-width: var(--page-min-width);
  display: flex;
  flex-wrap: wrap;
  padding: 15px 5%;
  margin: auto;
  align-items: center;
}

ul.header_top {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: flex-end;
  margin-bottom: 15px;
}

ul.header_top li a {
  display: block;
  text-align: center;
  color: #FFF;
  font-size: var(--font-s);
  font-weight: 700;
  line-height: 1;
  padding: 8px 25px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

ul.header_top li:nth-child(1) a {
  background-color: #2196F3;
}

ul.header_top li:nth-child(2) a {
  background-color: #FF5252;
}

ul.header_top li a:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

header img.logo {
  width: 180px;
  transition: all 0.3s ease;
}

ul.header_menu {
  width: calc(100% - 180px);
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: flex-end;
  align-items: center;
}

ul.header_menu li a {
  color: #333;
  font-size: var(--font-m);
  font-weight: 600;
  text-decoration: none;
  position: relative;
  padding: 5px 0;
}

ul.header_menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #2196F3;
  transition: width 0.3s ease;
}

ul.header_menu li a:hover::after {
  width: 100%;
}

@media screen and (max-width: 750px) {
  header {
    height: 60px;
  }

  .header_wrap {
    padding: 10px 5%;
  }

  header input[type=checkbox] {
    display: none; 
    
  }
  
  input[type=checkbox]:checked ~ #overlay {
    visibility: visible; 
  }
  
  input[type=checkbox]:checked ~ #overlay-button:hover span, input[type=checkbox]:checked ~ #overlay-button span {
    background: transparent;
    
    
  }
  input[type=checkbox]:checked ~ #overlay-button span:before {
    transform: rotate(45deg) translate(7px, 7px);
  
  }
  input[type=checkbox]:checked ~ #overlay-button span:after {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  #overlay-button {
    position: fixed;
          right: 0;
          top: 0;
          z-index: 20;
          cursor: pointer;
          user-select: none;
          padding: 26px 0;
          background: var(--primary-color);
          padding: 30px 10px;
  
    
  }
  header.scrolled #overlay-button {
  
    
  }
  #overlay-button span {
    height: 2px;
    width: 40px;
    border-radius: 2px;
    background-color: #FFF;
    position: relative;
    display: block;
    transition: all .2s ease-in-out;
  }
  header.scrolled #overlay-button span{
    background-color: #FFF;
  }
  #overlay-button span:before {
    top: -10px;
    visibility: visible;
  }
  #overlay-button span:after {
    top: 10px;
  }
  #overlay-button span:before, #overlay-button span:after {
    height: 2px;
    width: 40px;
    border-radius: 2px;
    background-color: #FFF;
    position: absolute;
    content: "";
    transition: all .2s ease-in-out;
  }
  #overlay-button:hover span, #overlay-button:hover span:before, #overlay-button:hover span:after {
    background-color: #FFF;
  }
  header.scrolled #overlay-button:hover span, header.scrolled #overlay-button:hover span:before, header.scrolled #overlay-button:hover span:after {
    background-color: #FFF;
  }
  header.scrolled #overlay-button span:before, header.scrolled #overlay-button span:after {
    background-color: #FFF;
  }
  
  
  #overlay {
    height: 100vh;
    width: 100vw;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10;
    visibility: hidden;
    position: fixed;
    top: 0;
    overflow-y: auto;
    padding:80px 0 200px;
    left: 0;
  }
  #overlay.active {
  
  }
  
  header #overlay ul {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    padding-top: 60px;
  }
  
  header #overlay ul li {
    text-align: left;
    width: 100%;
    padding: 0 4%;
    position: relative;
  }
  
  header #overlay ul li a {
    font-size: var(--font-l);
    line-height: 120%;
    font-weight: 700;
    color: #FFF;
    cursor: pointer;
  }
  
  #overlay label {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem;
    cursor: pointer;
    border-top: 0.5px solid #c7c5c5;
    color: #FFF;
  }
  #overlay label p{
    color: #FFF;
    margin: 0;
    padding:0;
    font-size: 1.6rem;
  }
  #overlay label a{
    color: #FFF;
  }
  #overlay input {
    display: none;
  }
  #overlay .accshow {
    height: 0;
    overflow: hidden;
  }
  #overlay .accshow p {
    padding: 1.5rem;
    margin: 0;
    color: #FFF;
  }
  #overlay .accshow p a{
    color: #FFF;
    font-size: 1.4rem;
  }
  #overlay .cssacc:checked + .accshow {
    height: auto;
  }
}