.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-bg-primary);
  border-bottom: 0.0625rem solid rgba(247, 200, 121, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.875rem;
}

.header__logo img {
  height: 2.25rem;
  width: auto;
}

/* Desktop nav hidden on mobile */
.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: inline-block;
  padding: 0.5rem 0;
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  transition: color var(--transition-base);
}
.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-heading-gold);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__flag {
  display: none;
  font-size: 1.25rem;
  line-height: 1;
}

.header__login,
.header__register {
  display: none;
  padding: 0.6rem 1.1rem;
  font-size: var(--font-size-small);
}

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3125rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-card);
}
.header__burger:hover {
  background: rgba(255, 255, 255, 0.05);
}
.header__burger-line {
  width: 1.5rem;
  height: 0.125rem;
  background: var(--color-white);
  border-radius: 0.125rem;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(1) {
  transform: translateY(0.4375rem) rotate(45deg);
}
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(2) {
  opacity: 0;
}
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(3) {
  transform: translateY(-0.4375rem) rotate(-45deg);
}

/* Mobile flat menu panel */
.header__mobile-menu {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
  max-height: 0;
  overflow: hidden;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  background: var(--color-bg-primary);
  transition: max-height var(--transition-base);
}
.header__mobile-menu.is-open {
  display: flex;
  max-height: 42rem;
  padding-block: 1.25rem 1.75rem;
  overflow-y: auto;
}

.header__mobile-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.header__mobile-list a {
  display: block;
  padding: 0.75rem 0.25rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  border-bottom: 0.0625rem solid rgba(255, 255, 255, 0.06);
}
.header__mobile-list a:hover,
.header__mobile-list a.header__nav-link--active {
  color: var(--color-heading-gold);
}

.header__mobile-actions {
  display: flex;
  gap: 0.75rem;
}
.header__mobile-actions .btn {
  flex: 1;
}

/* >= 768px: full desktop nav, hide burger's flat panel */
@media (min-width: 48em) {
  .header__nav { display: block; }
  .header__flag { display: block; }
  .header__login,
  .header__register { display: inline-flex; }
  .header__burger { display: none; }
  .header__mobile-menu,
  .header__mobile-menu.is-open { display: none; }
}