header {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  margin: 0 auto;
  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 {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  padding-top: 15px;
  padding-bottom: 15px;
  align-items: center;
  justify-content: right;
}

.header_wrap img.logo {
  display: none;
  width: 240px;
}
header.scrolled {
  background-color: var(--white-color);
}

header.scrolled .header_wrap img.logo {
  display: block;
}
ul.header_menu {
  width: calc(100% - 240px);
  font-family: var(--font-en);
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: flex-end;
  align-items: center;
}

ul.header_menu li a {
  color: var(--white-color);
  font-size: var(--font-size-default);
  font-weight: 600;
  text-decoration: none;
  position: relative;
}
header.scrolled ul.header_menu li a {
  color: var(--primary-color);
}

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

  .header_wrap {
    padding: 10px 5%;
    justify-content: flex-start;
  }

  header input[type="checkbox"] {
    display: none;
  }

  input[type="checkbox"]:checked ~ #overlay {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out, visibility 0s;
  }

  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: 27px 10px;
  }
  #overlay-button span {
    height: 2px;
    width: 40px;
    border-radius: 2px;
    background-color: var(--white-color);
    position: relative;
    display: block;
    transition: all 0.2s ease-in-out;
  }
  header.scrolled #overlay-button span {
    background-color: var(--white-color);
  }
  #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: var(--white-color);
    position: absolute;
    content: "";
    transition: all 0.2s ease-in-out;
  }
  #overlay-button:hover span,
  #overlay-button:hover span:before,
  #overlay-button:hover span:after {
    background-color: var(--white-color);
  }
  header.scrolled #overlay-button:hover span,
  header.scrolled #overlay-button:hover span:before,
  header.scrolled #overlay-button:hover span:after {
    background-color: var(--white-color);
  }
  header.scrolled #overlay-button span:before,
  header.scrolled #overlay-button span:after {
    background-color: var(--white-color);
  }

  #overlay {
    height: 100vh;
    width: 100vw;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 10;
    visibility: hidden;
    position: fixed;
    top: 0;
    overflow-y: auto;
    padding: 80px 0 200px;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out, visibility 0s 0.4s;
  }

  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;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
  }

  input[type="checkbox"]:checked ~ #overlay ul li {
    opacity: 1;
    transform: translateY(0);
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(1) {
    transition-delay: 0.1s;
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(2) {
    transition-delay: 0.15s;
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(3) {
    transition-delay: 0.2s;
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(4) {
    transition-delay: 0.25s;
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(5) {
    transition-delay: 0.3s;
  }

  input[type="checkbox"]:checked ~ #overlay ul li:nth-child(6) {
    transition-delay: 0.35s;
  }

  header #overlay ul li a {
    font-size: 2.4rem;
    line-height: 120%;
    font-weight: 700;
    color: var(--white-color);
    cursor: pointer;
  }

  #overlay label {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem;
    cursor: pointer;
    border-top: 0.5px solid #c7c5c5;
    color: var(--white-color);
  }
  #overlay label p {
    color: var(--white-color);
    margin: 0;
    padding: 0;
    font-size: 1.6rem;
  }
  #overlay label a {
    color: var(--white-color);
  }
  #overlay input {
    display: none;
  }
  #overlay .accshow {
    height: 0;
    overflow: hidden;
  }
  #overlay .accshow p {
    padding: 1.5rem;
    margin: 0;
    color: var(--white-color);
  }
  #overlay .accshow p a {
    color: var(--white-color);
    font-size: 1.4rem;
  }
  #overlay .cssacc:checked + .accshow {
    height: auto;
  }
  ul.header_menu li.contact {
    background-color: var(--color-red);
    padding: 10px 20px !important;
    border-radius: 5px;
  }
}