.site-header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition:
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

.topbar {
  background: var(--grey-100);
  border-bottom: 2px solid var(--grey-200);
  font-size: 14px;
}
.topbar-inner {
  margin: 0 auto;
  padding: var(--spacing-3) var(--spacing-7);
  display: flex;
  justify-content: space-between;
  color: var(--teal-200);
}
.topbar-regs span {
  margin-right: var(--spacing-6);
}
.topbar-social a {
  margin-left: var(--spacing-3);
  color: var(--color-primary);
}

.site-header {
  padding: var(--spacing-5) var(--spacing-7);
  border-bottom: 1px solid var(--grey-200);
}
.site-header-inner {
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-7);
}
.logo {
  position: relative;
  display: flex;
  align-items: center;
}
.logo-img {
  transition: opacity 0.3s ease;
}
.logo-white {
  display: none;
}

.logo-color {
  display: block;
}

.main-nav > ul {
  display: flex;
  gap: var(--spacing-6);
  list-style: none;
  flex-wrap: wrap;
  margin-top: var(--spacing-5);
}
.main-nav li a {
  font-size: 14px;
  font-weight: 500;
  display: inline-block;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
}
.main-nav .btn-support {
  font-size: 16px;
  font-weight: 500;
  height: 48px;
}
.main-nav a.active {
  border-color: var(--teal-100);
}

.main-nav > ul > li.has-children {
  position: relative;
}

.main-nav > ul > li.has-children > a::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  margin-bottom: 2px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  vertical-align: middle;
  opacity: 0.6;
}
.main-nav > ul > li.has-children:hover > a::after,
.main-nav > ul > li.has-children:focus-within > a::after {
  transform: rotate(225deg);
  margin-bottom: -2px;
}

.main-nav > ul > li.has-children > ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2, 0.35rem);
  position: absolute;
  top: calc(100% + var(--spacing-3, 0.75rem));
  left: 0;
  min-width: 240px;
  margin: 0;
  padding: var(--spacing-3, 0.6rem);
  background: var(--grey-100);
  border: 1px solid var(--grey-200);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  z-index: 200;

  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    visibility 0s linear 0.18s;
}

.main-nav > ul > li.has-children:hover > ul,
.main-nav > ul > li.has-children:focus-within > ul {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    visibility 0s linear 0s;
}

.main-nav > ul > li.has-children::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: var(--spacing-3, 0.75rem);
}

.main-nav > ul > li.has-children > ul li {
  width: 100%;
}
.main-nav > ul > li.has-children > ul li a {
  display: block;
  width: 100%;
  white-space: nowrap;
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  transition: background-color 0.15s ease;
}

.site-header-wrapper.has-hero .main-nav > ul > li.has-children > ul li a {
  color: var(--color-text);
}

.main-nav > ul > li.has-children > ul li a:hover {
  background: var(--grey-200);
}

.site-header-wrapper:not(.has-hero) {
  background: var(--grey-100);
}

.site-header-wrapper.has-hero {
  background: transparent;
}
.site-header-wrapper.has-hero .topbar {
  background: transparent;
  border-bottom: 2px solid var(--grey-100);
}
.site-header-wrapper.has-hero .site-header {
  border-bottom: none;
}

.site-header-wrapper.has-hero .topbar-regs,
.site-header-wrapper.has-hero .topbar-social a,
.site-header-wrapper.has-hero .logo-text,
.site-header-wrapper.has-hero .logo-text small,
.site-header-wrapper.has-hero .main-nav a {
  color: var(--grey-100);
  transition: color 0.3s ease;
}
.site-header-wrapper.has-hero .main-nav a.active {
  border-color: rgba(255, 255, 255, 0.5);
}

.site-header-wrapper.has-hero .logo-white {
  display: block;
}

.site-header-wrapper.has-hero .logo-color {
  display: none;
}

.site-header-wrapper.has-hero.scrolled .logo-white {
  display: none;
}

.site-header-wrapper.has-hero.scrolled .logo-color {
  display: block;
}

.site-header-wrapper.scrolled {
  background: var(--grey-100);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}
.site-header-wrapper.scrolled .topbar {
  background: var(--grey-100);
  border-bottom: 2px solid var(--grey-200);
}
.site-header-wrapper.scrolled .site-header {
  border-bottom: 1px solid var(--grey-200);
}

.site-header-wrapper.scrolled .topbar-regs,
.site-header-wrapper.scrolled .logo-text,
.site-header-wrapper.scrolled .logo-text small,
.site-header-wrapper.scrolled .main-nav a {
  color: var(--color-text);
}
.site-header-wrapper.scrolled .topbar-regs {
  color: var(--teal-200);
}
.site-header-wrapper.scrolled .topbar-social a,
.site-header-wrapper.scrolled .main-nav a.active {
  color: var(--color-primary);
  border-color: var(--teal-100);
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }
}