/* Shared top bar — used by the tool page and all content pages */
#appViewport .site-banner {
  position: relative;
}

.site-banner {
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  z-index: 20;
  position: sticky;
  top: 0;
  box-sizing: border-box;
}

.site-banner-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
  color: inherit;
}

.site-banner-logo {
  width: 28px;
  height: 28px;
  background: #4f46e5;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.site-banner-name {
  font-weight: 600;
  color: #1e293b;
  font-size: 15px;
  margin: 0;
  line-height: 1;
}

.site-banner-tag {
  font-size: 12px;
  color: #94a3b8;
  white-space: nowrap;
}

.site-banner-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 1;
  min-width: 0;
  overflow-x: auto;
}

.site-banner-nav a {
  font-size: 13px;
  color: #64748b;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.1s, color 0.1s;
  white-space: nowrap;
}

.site-banner-nav a:hover {
  background: #f1f5f9;
  color: #4f46e5;
}

.site-banner-nav a.is-current {
  color: #4f46e5;
  background: #eef2ff;
  font-weight: 500;
}

.site-banner-spacer {
  flex: 1;
  min-width: 8px;
}

.site-banner-lang {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.site-banner-lang a {
  font-size: 12px;
  color: #64748b;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
}

.site-banner-lang a:hover {
  background: #f1f5f9;
  color: #4f46e5;
}

.site-banner-lang a.is-current {
  color: #4f46e5;
  background: #eef2ff;
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid #e2e8f0;
  background: #fff;
  padding: 24px 20px;
}

.site-footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.8125rem;
  color: #94a3b8;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer a {
  color: #64748b;
  text-decoration: none;
}

.site-footer a:hover {
  color: #4f46e5;
}

@media (max-width: 720px) {
  .site-banner-tag {
    display: none;
  }
}