/* Header extras: brand mark, mobile navigation toggle, no-JS note. */

.brand-symbol {
  background: transparent;
  box-shadow: 0 8px 22px rgba(53, 89, 230, 0.3);
  overflow: hidden;
}

.brand-symbol svg {
  width: 100%;
  height: 100%;
  display: block;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  position: relative;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-bar {
  top: 50%;
  margin-top: -1px;
}

.nav-toggle-bar::before {
  top: -6px;
}

.nav-toggle-bar::after {
  top: 6px;
}

.nav-open .nav-toggle-bar {
  background: transparent;
}

.nav-open .nav-toggle-bar::before {
  transform: translateX(-50%) translateY(6px) rotate(45deg);
}

.nav-open .nav-toggle-bar::after {
  transform: translateX(-50%) translateY(-6px) rotate(-45deg);
}

.noscript-note {
  width: min(100% - 2rem, var(--container));
  margin: var(--space-lg) auto;
  padding: var(--space-md);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: 0.95rem;
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    order: 3;
  }

  .lang-switch {
    order: 2;
  }

  .nav {
    order: 4;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-xs) 0;
  }

  .header-inner {
    flex-wrap: wrap;
    row-gap: var(--space-sm);
  }

  .nav-open .nav {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle-bar,
  .nav-toggle-bar::before,
  .nav-toggle-bar::after {
    transition: none;
  }
}