.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9rem;
  margin: 1.25rem 0;
}

.controls label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: var(--muted);
}

.controls select,
.controls input[type="text"] {
  font: inherit;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--card-bg);
}

.controls .checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 0.4rem;
}

button.primary-btn {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: bold;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

button.primary-btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.id-group {
  margin: 1.25rem 0;
}

.id-group h3 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.id-field {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.92rem;
}

.id-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--muted);
}

.info-btn {
  appearance: none;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  display: inline-flex;
  cursor: pointer;
  opacity: 0.8;
}

.info-btn:hover {
  opacity: 1;
}

.info-btn-checksum {
  color: #3f8f5f;
}

.info-btn-pattern {
  color: #6b7fb0;
}

.info-btn-random {
  color: #a39c8e;
}

.info-popover {
  position: absolute;
  margin: 0;
  /* Purely informational, no interactive content - let clicks pass through
     to whatever's underneath (e.g. a different info button) rather than
     blocking them, so you don't have to dismiss before clicking elsewhere. */
  pointer-events: none;
  max-width: 280px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #2b2a26;
  color: #f3f1ec;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.82rem;
  line-height: 1.45;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.id-value.mono,
.id-field .id-value {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  word-break: break-all;
}

.copy-btn {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card-bg);
  cursor: pointer;
  color: var(--muted);
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#checksum-input {
  width: 100%;
  min-height: 100px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9rem;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  resize: vertical;
}

.safety-note {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  margin: 1.25rem 0;
}