/* Build Three (doc section 8.4). Totals reuse .cart-totals from components.css. */
.bt-hero { display: flex; flex-direction: column; gap: 1.25rem; padding-top: 4rem; padding-bottom: 3rem; }
.bt-title { font-size: 3rem; line-height: 1; font-weight: 600; letter-spacing: -0.045em; color: #20322d; text-wrap: balance; }
.bt-lead { max-width: 40rem; font-size: 1.125rem; line-height: 1.6; color: var(--muted-foreground); }
.bt-steps { display: grid; gap: .75rem; margin-top: .5rem; }
.bt-steps li { display: flex; align-items: center; gap: .75rem; padding: .875rem 1rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--card); font-weight: 500; }
.bt-steps b { display: inline-flex; width: 2rem; height: 2rem; align-items: center; justify-content: center; border-radius: 9999px; background: var(--primary); color: var(--primary-foreground); font-family: var(--font-mono); font-size: .875rem; }

.bt-layout { display: grid; gap: 2rem; padding-bottom: 6rem; }
.bt-picker { display: flex; flex-direction: column; gap: 1.25rem; min-width: 0; }
.bt-picker-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.bt-picker-head h2 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em; }
.bt-picker-head input { flex: 1; max-width: 20rem; min-width: 12rem; height: 2.75rem; padding: 0 1rem; border: 1px solid var(--border); border-radius: 9999px; background: var(--card); font: inherit; font-size: .875rem; }
.bt-picker-head input:focus { outline: none; border-color: var(--primary); }
.bt-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }
.bt-card { display: flex; gap: .875rem; padding: .875rem; border: 1px solid var(--border); border-radius: 1.125rem; background: var(--card); }
.bt-card[hidden] { display: none; }
.bt-card > img { width: 5rem; height: 5rem; flex-shrink: 0; border-radius: .875rem; object-fit: cover; background: var(--secondary); }
.bt-card-body { display: flex; flex-direction: column; gap: .375rem; min-width: 0; }
.bt-card h3 { font-size: 1rem; font-weight: 600; }
.bt-card .muted { font-size: .8125rem; line-height: 1.4; }
.bt-variants { display: flex; flex-wrap: wrap; gap: .375rem; margin-top: .25rem; }
.bt-add { display: inline-flex; flex-wrap: wrap; align-items: center; gap: .25rem .375rem; min-height: 2rem; max-width: 100%; padding: .3125rem .625rem; text-align: left; line-height: 1.35; border: 1px solid var(--border); border-radius: .625rem; font-size: .75rem; transition: border-color .15s, background-color .15s, color .15s; }
.bt-add:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.bt-add:disabled { opacity: .4; cursor: not-allowed; text-decoration: line-through; }
.bt-add.box-full { opacity: .5; pointer-events: none; }
/* No min-width: 0 here: the label must keep its own width, or "60 capsules" overflows into the price. */
.bt-add span:not(.mono), .bt-add svg { flex-shrink: 0; white-space: nowrap; }
.bt-add svg { color: var(--primary); }

.bt-box form { display: flex; flex-direction: column; gap: 1rem; padding: 1.5rem; border: 1px solid var(--border); border-radius: 1.35rem; background: var(--card); }
.bt-box-head { display: flex; align-items: center; justify-content: space-between; }
.bt-box-head h2 { font-size: 1.25rem; font-weight: 600; }
.bt-counter { font-family: var(--font-mono); font-size: .875rem; color: var(--muted-foreground); }
.bt-counter b { color: var(--primary); }
.bt-slots { display: flex; flex-direction: column; gap: .5rem; }
.bt-slot { display: grid; grid-template-columns: 3rem 1fr auto auto; gap: .625rem; align-items: center; min-height: 3.5rem; padding: .5rem .625rem; border: 1px solid var(--border); border-radius: .875rem; font-size: .875rem; }
.bt-slot img { width: 3rem; height: 3rem; border-radius: .625rem; object-fit: cover; }
.bt-slot.empty { display: flex; justify-content: center; border-style: dashed; color: var(--muted-foreground); font-size: .8125rem; }
.bt-fallback { display: flex; flex-direction: column; gap: .5rem; }
.bt-fallback[hidden] { display: none; }
.bt-fallback select { height: 2.75rem; padding: 0 .75rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--background); font: inherit; font-size: .875rem; }
.bt-totals[hidden] { display: none; }
.bt-box .btn-primary:disabled { opacity: .55; cursor: not-allowed; }

@media (min-width: 768px) {
  .bt-title { font-size: 4.5rem; }
  .bt-steps { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
  .bt-layout { grid-template-columns: 1fr 24rem; gap: 2.5rem; align-items: start; }
  .bt-box { position: sticky; top: 8rem; }
}