/* =========================================================
   Header block
   ========================================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--color-bg-primary);
  border-bottom: 1px solid rgba(164, 164, 164, 0.1);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-height);
}

.header__logo img { height: 34px; width: auto; }

.header__nav { display: none; }

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

.header__nav-link {
  color: var(--color-white);
  font-weight: var(--fw-medium);
  font-size: 0.95rem;
  padding-block: 0.5rem;
  position: relative;
  transition: color var(--transition-base);
}
.header__nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-heading-accent);
  transition: width var(--transition-base);
}
.header__nav-link:hover,
.header__nav-item--active .header__nav-link {
  color: var(--color-heading-accent);
}
.header__nav-link:hover::after,
.header__nav-item--active .header__nav-link::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.header__login,
.header__register {
  display: none;
  padding: 0.6rem 1.1rem;
  font-size: 0.85rem;
}

.header__flag {
  display: none;
  border-radius: 2px;
}

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}
.header__burger-line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.header__mobile {
  display: none;
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(164, 164, 164, 0.1);
}
.header__mobile.is-open { display: block; }

.header__mobile-list {
  display: grid;
  padding: 1rem;
  gap: 0.25rem;
}
.header__mobile-link {
  display: block;
  padding: 0.85rem 0.5rem;
  color: var(--color-white);
  font-weight: var(--fw-medium);
  border-bottom: 1px solid rgba(164, 164, 164, 0.08);
}
.header__mobile-link:hover { color: var(--color-heading-accent); }

.header__mobile-actions {
  display: grid;
  gap: 0.75rem;
  padding: 0 1rem 1.25rem;
}

@media (min-width: 1024px) {
  .header__nav { display: block; }
  .header__login,
  .header__register { display: inline-flex; }
  .header__flag { display: block; }
  .header__burger { display: none; }
  .header__mobile,
  .header__mobile.is-open { display: none; }
}