/**
 * header.css — BEM: header, header__*, header--modifier
 */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-header);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.header__logo {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}

.header__logo img {
  height: 36px;
  width: auto;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.75rem);
}

.header__nav-link {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: 0.5rem 0.25rem;
  position: relative;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-heading);
}

.header__nav-link--active::after {
  content: "";
  position: absolute;
  left: 0.25rem;
  right: 0.25rem;
  bottom: 0;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
}

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

.header__login,
.header__register {
  display: none;
  padding: 0.65rem 1.25rem;
  font-size: var(--font-size-small);
}

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

.header__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-card);
  order: 3;
}

.header__burger-line {
  width: 22px;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.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);
}

/* ---- Mobile flat menu --------------------------------------------- */

.header__mobile-menu {
  display: none;
  position: fixed;
  inset: 72px 0 0 0;
  z-index: var(--z-burger-panel);
  background: var(--color-bg-primary);
  overflow-y: auto;
  padding: 1.5rem 0 2.5rem;
}

.header__mobile-menu.is-open {
  display: block;
}

.header__mobile-list {
  display: flex;
  flex-direction: column;
}

.header__mobile-link {
  display: block;
  padding: 0.9rem var(--container-padding-inline);
  font-size: 1.05rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-bottom: 1px solid rgba(212, 197, 177, 0.1);
}

.header__mobile-link:hover,
.header__mobile-link.header__nav-link--active {
  color: var(--color-heading);
}

.header__mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem var(--container-padding-inline) 0;
}

/* ---- Breakpoints ---------------------------------------------------- */

@media (min-width: 768px) {
  .header__nav {
    display: block;
  }

  .header__login,
  .header__register {
    display: inline-flex;
  }

  .header__flag {
    display: inline-flex;
  }

  .header__burger {
    display: none;
  }
}