/* Переменные и базовые настройки */
:root {
  --scalar-custom-header-height: 50px;
  --brand-color: #01B5C8;
}

html {
  scroll-padding-top: calc(var(--scalar-custom-header-height) + 10px);
}

#upBtn {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background-color: var(--brand-color);
  color: white;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, background-color 0.3s;
}

#upBtn:hover {
  background-color: #0a8fa1;
  transform: scale(1.1);
}


.custom-header {
  height: var(--scalar-custom-header-height);
  background-color: var(--scalar-background-1);
  box-shadow: inset 0 -1px 0 var(--scalar-border-color);
  color: var(--scalar-color-1);
  font-size: var(--scalar-font-size-2);
  padding: 0 18px;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.custom-header nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.custom-header nav a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

.custom-header nav a:hover {
  color: var(--brand-color);
}

.header-logo {
  height: 40px;
  width: auto;
  display: block;
}


.lang-dropdown {
  position: relative;
  margin-left: 10px;
}

.lang-btn {
  background: none;
  border: 1px solid var(--scalar-border-color);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--scalar-font-size-2);
  display: flex;
  align-items: center;
  gap: 5px;
  color: inherit;
  transition: all 0.2s ease;
}

.lang-dropdown:hover .lang-btn {
  border-color: var(--brand-color);
  color: var(--brand-color);
}

.lang-content {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  padding-top: 8px;
  min-width: 130px;
  z-index: 1000;
}

.lang-content::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
}

.lang-content-inner {
  background-color: var(--scalar-background-1);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border: 1px solid var(--scalar-border-color);
  overflow: hidden;
}

.lang-content-inner a {
  color: var(--scalar-color-1) !important;
  padding: 10px 15px;
  display: block;
  font-size: 14px;
  transition: all 0.2s;
}

.lang-content-inner a:hover {
  background-color: var(--scalar-background-2) !important;
  color: var(--brand-color) !important;
}

.lang-content-inner a.active {
  font-weight: 700;
  color: var(--brand-color) !important;
}

/* Показ выпадашки */
.lang-dropdown:hover .lang-content,
.lang-dropdown.is-open .lang-content {
  display: block;
}

.arrow {
  font-size: 8px;
  color: #999;
  transition: transform 0.2s;
}

.lang-dropdown:hover .arrow {
  transform: rotate(180deg);
}


@media (max-width: 850px) {
  .custom-header nav > a {
    display: none !important;
  }

  .custom-header nav {
    gap: 0 !important;
  }

  .header-logo {
    height: 40px;
  }

  .lang-dropdown {
    margin-left: 0;
  }

  .lang-content {
    position: absolute;
    right: 0;
    top: 100%;
    min-width: 120px;
  }

  .lang-dropdown.is-open .lang-content {
    display: block !important;
  }
}