/* Header — mobile-first, sticky */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-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-height);
}
.header__logo img { height: 38px; width: auto; }

.header__actions { display: flex; align-items: center; gap: 0.6rem; }
.header__flag svg { border-radius: 2px; box-shadow: 0 0 0 1px rgba(255,255,255,0.15); }

/* CTA sizing tweak in header */
.header .btn { padding: 0.6rem 1.1rem; font-size: 0.9rem; }

/* Desktop CTA hidden on mobile (shown inside burger instead) */
.header__login-desktop,
.header__register-desktop { display: none; }

/* Burger */
.header__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
}
.header__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.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 — off-canvas flat list */
.header__nav {
  position: fixed;
  inset: var(--header-height) 0 auto 0;
  background: var(--color-bg-primary);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.header__nav.is-open { max-height: calc(100dvh - var(--header-height)); overflow-y: auto; }
.header__nav-list { display: flex; flex-direction: column; padding: 0.5rem 0 1.25rem; }
.header__nav-item { border-bottom: 1px solid rgba(255,255,255,0.05); }
.header__nav-link {
  display: block;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  color: var(--color-text);
  font-weight: var(--fw-medium);
  transition: color var(--transition-base), background var(--transition-base);
}
.header__nav-link:hover,
.header__nav-link--active { color: var(--color-heading); background: rgba(255,255,255,0.03); }
.header__nav-item--cta { border-bottom: none; padding: 0.75rem clamp(1rem, 4vw, 2.5rem) 0; }
.header__nav-item--cta .btn { display: flex; }

/* Desktop */
@media (min-width: 992px) {
  .header__burger { display: none; }
  .header__login-desktop,
  .header__register-desktop { display: inline-flex; }
  .header__nav {
    position: static;
    max-height: none;
    overflow: visible;
    background: transparent;
    border: none;
    flex: 1;
  }
  .header__nav-list {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0;
  }
  .header__nav-item { border: none; }
  .header__nav-item--cta { display: none; } /* CTA shown in actions on desktop */
  .header__nav-link {
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-card);
  }
}