/*
 * Context Composer — token budget meter + saved bundles inside the
 * Prompt Builder panel. Design tokens only; dark mode inherits via tokens.
 */

.builder-budget {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.builder-budget-controls {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.builder-budget-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1 1 160px;
  min-width: 0;
}

.builder-budget-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.builder-budget-input {
  min-height: 34px;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
}

/* ── Stacked budget bar ────────────────────────────────────────────────── */

.builder-budget-bar {
  display: flex;
  width: 100%;
  height: 14px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--surface-secondary);
  border: 1px solid var(--border-primary);
}

.builder-budget-segment {
  display: block;
  height: 100%;
  min-width: 2px;
  transition: width 200ms ease;
  border-right: 1px solid color-mix(in srgb, var(--bg-primary) 55%, transparent);
}

.builder-budget-segment:last-child {
  border-right: none;
}

.builder-budget-segment-0 { background: var(--brand-500); }
.builder-budget-segment-1 { background: color-mix(in srgb, var(--brand-500) 65%, var(--success-500)); }
.builder-budget-segment-2 { background: var(--success-500); }
.builder-budget-segment-3 { background: color-mix(in srgb, var(--brand-500) 55%, var(--warning-500)); }
.builder-budget-segment-4 { background: var(--warning-500); }
.builder-budget-segment-5 { background: color-mix(in srgb, var(--brand-500) 40%, var(--text-tertiary)); }

.builder-budget-free {
  background: transparent;
}

.builder-budget-reserve {
  background: repeating-linear-gradient(
    -45deg,
    color-mix(in srgb, var(--text-tertiary) 28%, transparent),
    color-mix(in srgb, var(--text-tertiary) 28%, transparent) 4px,
    transparent 4px,
    transparent 8px
  );
}

.builder-budget-bar.is-over-budget {
  border-color: var(--danger-500);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--danger-500) 45%, transparent);
}

/* ── Total + legend + warnings ─────────────────────────────────────────── */

.builder-budget-total {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.builder-budget-total.is-over-budget {
  color: var(--danger-600, var(--danger-500));
  font-weight: 600;
}

.builder-budget-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.builder-budget-legend:empty {
  display: none;
}

.builder-budget-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  min-width: 0;
}

.builder-budget-swatch {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-base);
}

.builder-budget-legend-label {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.builder-budget-legend-tokens {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  color: var(--text-tertiary);
}

.builder-budget-warnings {
  margin: 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--warning-500) 45%, transparent);
  background: color-mix(in srgb, var(--warning-500) 12%, transparent);
  color: var(--text-primary);
  font-size: var(--text-sm);
}

.builder-budget-bar.is-over-budget ~ .builder-budget-warnings {
  border-color: color-mix(in srgb, var(--danger-500) 50%, transparent);
  background: color-mix(in srgb, var(--danger-500) 10%, transparent);
}

/* ── Saved bundle controls ─────────────────────────────────────────────── */

.builder-bundle-controls {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
  padding-top: var(--space-2);
  border-top: 1px solid var(--border-primary);
}

.builder-bundle-controls .builder-budget-input {
  flex: 1 1 150px;
  min-width: 0;
}

@media (prefers-reduced-motion: reduce) {
  .builder-budget-segment {
    transition: none;
  }
}