body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #f8fafc;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header__brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #2563eb;
  text-decoration: none;
  white-space: nowrap;
}

.app-header__brand:hover {
  text-decoration: underline;
}

.app-header__divider {
  color: #cbd5e1;
  font-weight: 400;
}

.app-header__title {
  font-weight: 600;
  font-size: 1.1rem;
  color: #0f172a;
  white-space: nowrap;
}

main {
  min-height: calc(100vh - 3.25rem);
}

.ip-card {
  width: 100%;
  max-width: 480px;
  border-radius: 1rem;
}

.ip-value {
  font-family: 'Courier New', Consolas, monospace;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 700;
  color: #2563eb;
  word-break: break-all;
}

.geo-info dt {
  font-weight: 600;
  color: #475569;
  width: 40%;
}

.geo-info dd {
  width: 60%;
  margin-bottom: 0;
  color: #0f172a;
}

.geo-info > div {
  display: flex;
  border-top: 1px solid #e2e8f0;
  padding-top: 0.5rem;
}

.geo-info > div:first-child {
  border-top: none;
  padding-top: 0;
}

#copy-btn.copied {
  color: #fff;
  background-color: #16a34a;
  border-color: #16a34a;
}