/* Header block — mobile-first, sticky */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}
.header__logo img { height: 36px; width: auto; }

.header__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  order: 3;
}
.header__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.header__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.header__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav panel (flat list, no dropdowns) */
.header__nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  background: var(--bg-dark);
  flex-direction: column;
  padding: 1rem clamp(1rem, 4vw, 2.5rem) 1.5rem;
  transform: translateY(-120%);
  transition: transform var(--transition);
  box-shadow: var(--shadow-card);
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  display: flex;
  gap: 1rem;
}
.header__nav.is-open { transform: translateY(0); }

.header__nav-list { display: flex; flex-direction: column; gap: 0.25rem; }
.header__nav-link {
  display: block;
  padding: 0.75rem 0.25rem;
  color: var(--text);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: color var(--transition);
}
.header__nav-link:hover,
.header__nav-link--active { color: var(--heading); }

.header__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.header__cta-btn { flex: 1 1 auto; }
.header__flag { font-size: 1.5rem; line-height: 1; }

/* Desktop */
@media (min-width: 768px) {
  .header__burger { display: none; }
  .header__nav {
    position: static;
    transform: none;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 1.5rem;
    padding: 0;
    background: transparent;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    flex: 1;
  }
  .header__nav-list { flex-direction: row; gap: 0.25rem; }
  .header__nav-link { border-bottom: none; padding: 0.5rem 0.75rem; }
  .header__cta-btn { flex: 0 0 auto; padding: 0.55rem 1rem; }
}