/*
 * FM-17 Milestone list builder — app/components/ui/milestone_list_builder_component.rb
 *
 * Row inputs reuse the shared `.fm-control` shell from forms.css (border,
 * background, radius, padding, focus ring) — this file only adds layout,
 * the drag/keyboard-reorder state, and the reward affix positioning.
 * Token vars only — enforced by test/lint/css_token_lint_test.rb.
 */

.ui-milestone-builder {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.ui-milestone-builder__warning {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-warning-subtle);
  color: var(--color-warning-ink);
  font-size: var(--text-sm);
  line-height: var(--text-sm--line-height);
}

.ui-milestone-builder__empty {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.ui-milestone-builder.is-empty .ui-milestone-builder__list {
  display: none;
}

.ui-milestone-builder.is-empty .ui-milestone-builder__empty {
  display: block;
}

.ui-milestone-builder__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.ui-milestone-builder__row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: box-shadow var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.ui-milestone-builder__row.is-dragging {
  box-shadow: var(--shadow-md);
}

.ui-milestone-builder__handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: var(--tap-min);
  height: var(--tap-min);
  border: none;
  background: transparent;
  color: var(--color-ink-soft);
  cursor: grab;
  padding: 0;
}

.ui-milestone-builder__handle:active,
.ui-milestone-builder__row.is-dragging .ui-milestone-builder__handle {
  cursor: grabbing;
}

.ui-milestone-builder__handle:focus-visible {
  box-shadow: var(--focus-halo);
  border-radius: var(--radius-xs);
}

.ui-milestone-builder__handle svg {
  display: block;
  width: 24px;
  height: 24px;
}

.ui-milestone-builder__position {
  flex-shrink: 0;
  min-width: var(--space-4);
  font-size: var(--text-xs);
  line-height: var(--text-xs--line-height);
  color: var(--color-ink-muted);
  font-variant-numeric: var(--numeric-tabular);
  text-align: center;
}

.ui-milestone-builder__field {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.ui-milestone-builder__name-input.is-error {
  border: 1.5px solid var(--color-danger-strong);
}

.ui-milestone-builder__field-error {
  font-size: var(--text-xs);
  line-height: var(--text-xs--line-height);
  color: var(--color-danger-ink);
}

/* Reward — polymorphic affix (leading $ for flat, trailing % for percentage) */
.ui-milestone-row__reward {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  width: 120px;
}

.ui-milestone-row__reward-input {
  width: 100%;
  padding-inline-start: var(--space-6);
  font-variant-numeric: var(--numeric-tabular);
}

.ui-milestone-row__reward--percentage .ui-milestone-row__reward-input {
  padding-inline-start: var(--space-4);
  padding-inline-end: var(--space-6);
}

.ui-milestone-row__reward-affix {
  position: absolute;
  inset-inline-start: var(--space-4);
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
  pointer-events: none;
}

.ui-milestone-row__reward--percentage .ui-milestone-row__reward-affix {
  inset-inline-start: auto;
  inset-inline-end: var(--space-4);
}

.ui-milestone-builder__footer {
  display: flex;
}

.ui-milestone-builder__announcement {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

template {
  display: none;
}