/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 0 0.25rem 1rem rgba(61, 53, 50, 0.06);
}

.site-header__content {
  display: flex;
  gap: 0 1rem;
  align-items: center;
  justify-content: space-between;
  min-height: 5.5rem;
  padding-block: 0.5rem;
  flex-wrap: wrap;
}

.site-header__brand-link {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  min-width: 0;
  text-decoration: none;
}

.site-header__brand-link:focus-visible {
  border-radius: 0.25rem;
  outline: 3px solid var(--color-gold);
  outline-offset: 4px;
}

.site-header__symbol {
  width: 2.5rem;
  height: auto;
  flex: 0 0 auto;
}

.site-header__brand {
  width: 11.75rem;
  height: auto;
}

.site-header__menu-button {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  background: rgba(252, 248, 246, 0.72);
  color: var(--color-brown);
  cursor: pointer;
  box-shadow: var(--shadow-control);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.site-header__menu-button:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

.site-header__menu-icon {
  position: relative;
  display: grid;
  gap: 0.25rem;
  width: 1.35rem;
}

.site-header__menu-icon span {
  display: block;
  width: 100%;
  height: 0.125rem;
  border-radius: 999px;
  background: currentColor;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.site-header__menu-button[aria-expanded="true"]
  .site-header__menu-icon span:first-child {
  transform: translateY(0.375rem) rotate(45deg);
}

.site-header__menu-button[aria-expanded="true"]
  .site-header__menu-icon span:nth-child(2) {
  opacity: 0;
}

.site-header__menu-button[aria-expanded="true"]
  .site-header__menu-icon span:last-child {
  transform: translateY(-0.375rem) rotate(-45deg);
}

/* Mobile navigation */
.site-header__navigation {
  display: block;
  width: 100%;
  max-height: 0;
  margin-top: 0;
  padding-top: 0;
  overflow: hidden;
  border-top: 1px solid transparent;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.3rem);
  transition:
    max-height 230ms cubic-bezier(0.4, 0, 0.2, 1),
    margin-top 230ms cubic-bezier(0.4, 0, 0.2, 1),
    padding-top 230ms cubic-bezier(0.4, 0, 0.2, 1),
    border-color 180ms ease,
    opacity 160ms ease,
    transform 180ms ease,
    visibility 0s linear 230ms;
}

.site-header__navigation[data-open="true"] {
  max-height: 28rem;
  margin-top: 0.65rem;
  padding-top: 0.75rem;
  border-top-color: var(--color-border);
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition:
    max-height 340ms cubic-bezier(0.2, 0.7, 0.2, 1),
    margin-top 340ms cubic-bezier(0.2, 0.7, 0.2, 1),
    padding-top 340ms cubic-bezier(0.2, 0.7, 0.2, 1),
    border-color 220ms ease,
    opacity 260ms ease,
    transform 300ms ease,
    visibility 0s linear 0s;
}

.site-header__navigation-list {
  display: grid;
  gap: 0.125rem;
  min-height: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__navigation a {
  display: block;
  padding: 0.65rem 0.25rem;
  color: var(--color-brown);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.3;
  text-decoration: none;
  transition: color 180ms ease;
}

.site-header__navigation a:hover {
  color: var(--color-text);
}

.site-header__navigation a:focus-visible {
  border-radius: 0.25rem;
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 8;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  padding: 0.5rem;
  place-items: center;
  border: 1px solid var(--color-brown);
  border-radius: 50%;
  background: var(--color-beige);
  cursor: pointer;
  box-shadow:
    0 0.22rem 0 var(--color-brown),
    0 0.7rem 1.3rem rgba(61, 53, 50, 0.23);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(0.75rem);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    opacity 180ms ease,
    transform 180ms ease,
    visibility 180ms ease;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

.back-to-top img {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}