.merge-advance-notice {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border-inline-start: var(--space-xs) solid var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 12%, transparent);
  box-shadow: var(--shadow-sm);
}

.merge-advance-notice__content {
  color: var(--text);
  line-height: 1.4;
}

.merge-advance-notice__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.merge-advance-notice__dismiss {
  border: 0;
  background: none;
  color: var(--text-muted);
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  line-height: 0;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.merge-advance-notice__dismiss:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--color-warning) 18%, transparent);
}

.merge-advance-notice__dismiss:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring-strong);
}

.merge-advance-notice__error {
  color: var(--color-error);
}

.merge-advance-notice__hint {
  color: var(--text-muted);
}

.merge-advance-notice__push {
  display: grid;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: var(--border-width-thin) solid color-mix(in srgb, var(--color-warning) 25%, transparent);
}

.merge-advance-notice__push-heading {
  margin: 0;
  color: var(--text);
}

.merge-advance-notice__push-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.merge-advance-notice__push-advanced summary {
  cursor: pointer;
  color: var(--text-muted);
}

.merge-advance-notice__push-advanced label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  margin-top: var(--space-2xs);
}

.merge-advance-notice__push-error {
  color: var(--color-error);
}

.merge-advance-notice__push-error pre {
  margin: var(--space-2xs) 0;
  padding: var(--space-2xs);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-error) 12%, transparent);
  color: var(--color-error);
  font-family: var(--font-mono);
  white-space: pre-wrap;
}

@media (max-width: 768px) {
  .merge-advance-notice {
    flex-direction: column;
    align-items: stretch;
  }

  .merge-advance-notice__actions {
    justify-content: flex-start;
  }

  .merge-advance-notice__push-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}