/* Mix-your-own bundle builder: intro, size tiles + mix steppers + info card / sticky summary panel. */
.box-builder {
  display: block;
  background: rgba(var(--color-background));
  color: rgba(var(--color-text));
}
.box-builder--pad-top { padding-top: 56px; }
.box-builder--pad-both { padding-block: 56px; }
@media (max-width: 560px) {
  .box-builder--pad-top { padding-top: 40px; }
  .box-builder--pad-both { padding-block: 40px; }
}

.box-builder__heading { margin-top: 14px; }
.box-builder__lede { max-width: 50ch; margin-top: 16px; }
/* The split keeps its 44px gap when it stacks (panel below the options). */
.box-builder__split.theme-split { margin-top: 40px; gap: 44px; }

.box-builder__step { font: 500 11px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--theme-text-mono); }
.box-builder__step--sizes { margin-bottom: 12px; }

/* ---------- Size tiles ---------- */
.box-builder__sizes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.box-builder__size {
  cursor: pointer; font: inherit; background: var(--theme-white); color: var(--theme-ink);
  border: 2px solid var(--theme-line-2); border-radius: var(--radius); padding: 20px 12px; text-align: center;
  transition: all 0.16s ease;
}
.box-builder__size:hover { border-color: var(--theme-line-3); }
.box-builder__size.is-active { background: var(--theme-ink); color: var(--theme-cream); border-color: var(--theme-ink); }
.box-builder__size-n { display: block; font-family: var(--font-display); font-size: 30px; line-height: 1; }
.box-builder__size-u { display: block; font: 600 11px/1.3 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; margin-top: 6px; }
.box-builder__size-each { display: block; font: 500 12px/1 var(--font-mono); margin-top: 10px; opacity: 0.8; }
.box-builder__size-tag { margin-top: 10px; }

/* ---------- Mix rows ---------- */
.box-builder__fill-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; justify-content: space-between; margin: 32px 0 12px; }
.box-builder__flavors { display: grid; gap: 12px; }
.box-builder__flavor {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  border-radius: var(--radius); padding: 18px 20px; background: var(--flavor-bg); color: var(--flavor-fg);
}
.box-builder__flavor-copy { flex: 1; min-width: 140px; }
.box-builder__flavor-name { font: 700 19px/1.15 var(--font-body); letter-spacing: -0.01em; }
.box-builder__flavor-note { font: 500 12px/1.4 var(--font-mono); opacity: 0.72; margin-top: 6px; }
.box-builder__stepper { display: flex; align-items: center; gap: 4px; padding: 5px; border-radius: var(--pill); background: var(--flavor-step); }
.box-builder__stepper button {
  width: 38px; height: 38px; border: 0; border-radius: var(--pill); cursor: pointer; padding: 0;
  background: var(--flavor-btn); color: var(--flavor-fg); font: 700 20px/1 var(--font-body);
}
.box-builder__stepper button:hover { filter: brightness(1.25); }
.box-builder__stepper span { min-width: 34px; text-align: center; font: 400 19px/1 var(--font-display); }
/* Comfortable hit targets on touch devices regardless of viewport width (matches the source rule). */
@media (pointer: coarse) {
  .box-builder__stepper button { width: 36px; height: 36px; }
  .box-builder__stepper span { min-width: 28px; }
}
.box-builder__notice { margin: 12px 0 0; font: 600 13px/1.4 var(--font-body); color: rgba(var(--color-text)); }

/* ---------- Info card ---------- */
.box-builder__info { margin-top: 28px; padding: 28px; background: rgba(var(--color-card-background)); border: 1px solid var(--theme-line); border-radius: var(--radius-lg); }
.box-builder__info-text { margin-top: 10px; font-size: 15px; }
.box-builder__trust { display: flex; flex-wrap: wrap; gap: 18px 28px; margin-top: 18px; font: 600 13px/1.3 var(--font-body); color: var(--theme-text-soft); }

/* ---------- Summary panel ---------- */
.box-builder__panel {
  position: sticky; top: calc(var(--header-h) + 22px);
  background: rgba(var(--color-card-background)); border: 1px solid var(--theme-line); border-radius: var(--radius-xl); padding: 28px;
}
.box-builder__progress { height: 10px; margin-top: 18px; background: var(--theme-cream); border-radius: var(--pill); overflow: hidden; }
.box-builder__bar { height: 100%; background: var(--theme-accent); transition: width 0.35s ease; }
.box-builder__status { margin-top: 10px; }
.box-builder__lines { display: grid; gap: 10px; margin-top: 22px; font-size: 15px; }
.box-builder__line { display: flex; justify-content: space-between; gap: 12px; }
.box-builder__line span:first-child { color: var(--theme-text-muted); }
.box-builder__line span:last-child { font-weight: 600; }
.box-builder__modes { display: grid; gap: 10px; margin-top: 24px; }
.box-builder__mode {
  display: flex; align-items: center; gap: 16px; width: 100%; text-align: left; cursor: pointer;
  font: inherit; color: inherit; background: transparent; border: 2px solid var(--theme-line-2); border-radius: var(--radius);
  padding: 15px 17px; transition: border-color 0.16s ease, background 0.16s ease;
}
.box-builder__mode:hover { border-color: var(--theme-line-3); }
.box-builder__mode.is-active { background: var(--theme-white); border-color: var(--theme-ink); }
.box-builder__radio { width: 18px; height: 18px; flex: 0 0 auto; border-radius: var(--pill); border: 2px solid var(--theme-ink); background: transparent; transition: background 0.15s ease; }
.box-builder__mode.is-active .box-builder__radio { background: var(--theme-ink); }
.box-builder__mode-label { flex: 1; font: 700 14px/1.2 var(--font-body); }
.box-builder__mode-note { display: block; font: 500 12px/1.4 var(--font-mono); color: var(--theme-text-muted); margin-top: 5px; }
.box-builder__mode-price { font: 700 15px/1 var(--font-body); }
.box-builder__grand { display: flex; justify-content: space-between; align-items: baseline; margin-top: 22px; padding-top: 12px; border-top: 1px solid #0B0B0B18; }
.box-builder__total-label { color: var(--theme-text-mono); }
.box-builder__total { font-family: var(--font-display); font-size: 30px; line-height: 1; }
.box-builder__per-unit { margin-top: 6px; }
.box-builder__cta { margin-top: 18px; }
.box-builder__cta-note { margin: 12px 0 0; font: 600 13px/1.4 var(--font-body); text-align: center; }
.box-builder__fineprint { text-align: center; margin-top: 12px; font: 500 11px/1.5 var(--font-mono); color: var(--theme-text-mono); text-transform: uppercase; letter-spacing: 0.08em; }

@media (max-width: 900px) {
  .box-builder__info, .box-builder__panel { padding: 22px; }
  .box-builder__panel { position: static; top: auto; }
}
@media (max-width: 620px) {
  .box-builder__size { padding: 16px 8px; }
  .box-builder__size-n { font-size: 26px; }
  .box-builder__size-tag { white-space: normal; line-height: 1.3; padding: 6px 8px; letter-spacing: 0.08em; }
  .box-builder__flavor { padding: 16px; }
  .box-builder__flavor-name { font-size: 17px; }
}
@media (max-width: 560px) {
  .box-builder__fill-row { align-items: flex-start; }
}