header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.sidebar-preview {
  position: fixed;
  height: 100%;
  z-index: 100;
  padding: 30px 17px;
  max-width: 93px;
  background-color: #090909;
}
.sidebar-preview__logo {
  display: block;
}
.sidebar-preview__burger {
  cursor: pointer;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  bottom: 20px;
}
.sidebar-preview__burger button {
  border: none;
  background-image: url("./images/burger.svg");
  background-repeat: no-repeat;
  background-position: center;
  width: 31px;
  height: 22px;
  background-color: unset;
}
.sidebar-navigation-contacts {
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: bold;
  gap: 15px;
  margin-left: auto;
  padding-left: 20px;
}
.sidebar-navigation__container {
  background-color: rgba(22, 22, 22, 0.97);
  border-radius: 0px 15px 15px 0px;
  height: 100%;
  display: flex;
  align-items: center;
}
.sidebar-navigation__wrapper {
  display: flex;
  padding: 0 35px;
  gap: 15px;
  align-items: center;
  justify-content: space-between;
}
.sidebar-navigation__close {
  cursor: pointer;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  right: -21px;
  border: 1px solid #808080;
  background-color: rgba(166, 12, 12, 0.74);
  position: absolute;
  background-image: url("images/close.svg");
  background-repeat: no-repeat;
  background-position: center;
}
.sidebar-navigation-btn {
  padding-left: 29px;
  display: flex;
  flex-direction: column;
  color: #ffffff;
  justify-content: center;
}
.sidebar-navigation-btn button {
  font-size: 14px;
  padding: 15px 25px;
}
.sidebar-navigation__link {
  display: none;
  color: #808080;
  font-size: 14px;
  text-align: center;
  line-height: 1.4;
  transition: color 0.3s ease;
}
.sidebar-navigation__link:hover {
  color: #fff;
  text-decoration: underline;
}
.sidebar-navigation.close {
  opacity: 0;
  transition: all 0.4s ease;
  transform: translateX(-150%);
}
.sidebar-navigation.open {
  position: fixed;
  z-index: 100;
  height: 100%;
  width: 308px;
  top: 75px;
  display: block;
  opacity: 1;
  transition: transform 0.4s ease;
  transform: translateX(0);
  height: 400px;
  background: rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 20px 0;
  left: 0;
}
.sidebar-navigation.open .sidebar-navigation__link {
  display: block;
}
.sidebar-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  width: 100%;
  justify-content: space-between;
  padding: 12px 15px;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 100;
}
.sidebar-mobile__burger {
  display: flex;
  cursor: pointer;
  border: 1px solid #808080;
  border-radius: 10px;
  padding: 10px 15px;
  margin-right: 28px;
  background-color: #090909;
}
.sidebar-mobile__burger button {
  border: none;
  background-image: url("./images/burger.svg");
  background-repeat: no-repeat;
  background-position: center;
  width: 31px;
  height: 22px;
  background-color: unset;
}
.sidebar-mobile__burger button.cross {
  background-image: url(images/close.svg);
  transform: scale(1.5);
}
.sidebar-mobile__button {
  width: 100%;
}
.sidebar .menu-btn {
  display: none;
  color: #fff;
}
@media (max-width: 1440px) {
  .sidebar-navigation-contacts {
    display: none;
  }
}
@media (max-width: 1200px) {
  .sidebar-navigation-contacts {
    display: none;
  }
  .sidebar-navigation {
    display: none;
  }
  .sidebar .menu-btn {
    cursor: pointer;
    display: block;
    margin-left: auto;
  }
}
@media (max-width: 480px) {
  .sidebar-preview {
    display: none;
  }
  .sidebar-navigation {
    width: 100%;
  }
  .sidebar-navigation__close {
    display: none;
  }
  .sidebar-navigation__container {
    justify-content: center;
  }
  .sidebar-navigation-btn {
    display: none;
  }
  .sidebar-navigation .menu {
    padding-left: 0;
    background: rgba(0, 0, 0, 0.55);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
  }
  .sidebar-mobile {
    display: flex;
  }
}

.menu {
  display: flex;
  height: 100%;
  align-items: anchor-center;
  gap: 25px;
  padding-left: 29px;
}
.menu-item.active .menu-item__link {
  font-weight: 500;
  color: #fff;
}
.menu-item__link {
  color: #d9d9d9;
  display: flex;
  align-items: center;
  font-size: 14px;
  transition: all 0.5s;
}
.menu-item__link:hover {
  color: #808080;
}

@media (max-width: 1200px) {
  .menu {
    flex-direction: column;
    padding-left: 0;
    margin-bottom: 30px;
  }
}